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GNU C Library master sources branch sthibaul/hurd-builds created. glibc-2.27.9000-227-gf9d70af


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The branch, sthibaul/hurd-builds has been created
        at  f9d70afb29c487ee22ebccf376a3073437da20b5 (commit)

- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f9d70afb29c487ee22ebccf376a3073437da20b5

commit f9d70afb29c487ee22ebccf376a3073437da20b5
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Tue Feb 27 01:46:09 2018 +0100

    htl: remove _IO_ name aliases
    
    This follows 9964a14579e5 ('Mechanically remove _IO_ name aliases for types
    and constants.')
    
    * htl/lockfile.c (_cthreads_flockfile, _cthreads_funlockfile,
    _cthreads_ftrylockfile, _IO_flockfile, _IO_funlockfile, _IO_ftrylockfile,
    flockfile, funlockfile, ftrylockfile): Use FILE type instead of _IO_FILE
    type.

diff --git a/htl/lockfile.c b/htl/lockfile.c
index 644a0fb..65e9b6e 100644
--- a/htl/lockfile.c
+++ b/htl/lockfile.c
@@ -22,19 +22,19 @@
 #include <stdio.h>
 
 void
-_cthreads_flockfile (_IO_FILE *fp)
+_cthreads_flockfile (FILE *fp)
 {
   _IO_lock_lock (*fp->_lock);
 }
 
 void
-_cthreads_funlockfile (_IO_FILE *fp)
+_cthreads_funlockfile (FILE *fp)
 {
   _IO_lock_unlock (*fp->_lock);
 }
 
 int
-_cthreads_ftrylockfile (_IO_FILE *fp)
+_cthreads_ftrylockfile (FILE *fp)
 {
   return __libc_lock_trylock_recursive (*fp->_lock);
 }
@@ -46,16 +46,16 @@ _cthreads_ftrylockfile (_IO_FILE *fp)
 # undef		funlockfile
 # undef		ftrylockfile
 
-void _IO_flockfile (_IO_FILE *)
+void _IO_flockfile (FILE *)
      __attribute__ ((alias ("_cthreads_flockfile")));
-void _IO_funlockfile (_IO_FILE *)
+void _IO_funlockfile (FILE *)
      __attribute__ ((alias ("_cthreads_funlockfile")));
-int _IO_ftrylockfile (_IO_FILE *)
+int _IO_ftrylockfile (FILE *)
      __attribute__ ((alias ("_cthreads_ftrylockfile")));
 
-void flockfile (_IO_FILE *)
+void flockfile (FILE *)
      __attribute__ ((alias ("_cthreads_flockfile")));
-void funlockfile (_IO_FILE *)
+void funlockfile (FILE *)
      __attribute__ ((alias ("_cthreads_funlockfile")));
-int ftrylockfile (_IO_FILE *)
+int ftrylockfile (FILE *)
      __attribute__ ((alias ("_cthreads_ftrylockfile")));

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=ae5680fdb2b9089be8954704e2b38d1dde595de5

commit ae5680fdb2b9089be8954704e2b38d1dde595de5
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Tue Feb 27 01:36:41 2018 +0100

    Drop deprecated glibc option
    
    * lockfile.c: Do not use _STDIO_USES_IOSTREAM condition any more.

diff --git a/htl/lockfile.c b/htl/lockfile.c
index 040cbfb..644a0fb 100644
--- a/htl/lockfile.c
+++ b/htl/lockfile.c
@@ -21,8 +21,6 @@
 #include <pthread.h>		/* Must come before <stdio.h>! */
 #include <stdio.h>
 
-#ifdef _STDIO_USES_IOSTREAM
-
 void
 _cthreads_flockfile (_IO_FILE *fp)
 {
@@ -61,5 +59,3 @@ void funlockfile (_IO_FILE *)
      __attribute__ ((alias ("_cthreads_funlockfile")));
 int ftrylockfile (_IO_FILE *)
      __attribute__ ((alias ("_cthreads_ftrylockfile")));
-
-#endif /* _STDIO_USES_IOSTREAM */

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=da4de247fb045eb9f6a4e85ea9e9023c1971e588

commit da4de247fb045eb9f6a4e85ea9e9023c1971e588
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sun Jan 28 23:29:47 2018 +0100

    hurd: Add libphread.so ABI file
    
    * sysdeps/mach/hurd/i386/libpthread.abilist: New file.

diff --git a/sysdeps/mach/hurd/i386/libpthread.abilist b/sysdeps/mach/hurd/i386/libpthread.abilist
new file mode 100644
index 0000000..e11569f
--- /dev/null
+++ b/sysdeps/mach/hurd/i386/libpthread.abilist
@@ -0,0 +1,151 @@
+GLIBC_2.12 GLIBC_2.12 A
+GLIBC_2.12 __mutex_lock_solid F
+GLIBC_2.12 __mutex_unlock_solid F
+GLIBC_2.12 __pthread_get_cleanup_stack F
+GLIBC_2.12 __pthread_key_create F
+GLIBC_2.12 __pthread_kill F
+GLIBC_2.12 __pthread_mutex_transfer_np F
+GLIBC_2.12 __pthread_spin_destroy F
+GLIBC_2.12 __pthread_spin_init F
+GLIBC_2.12 __pthread_spin_lock F
+GLIBC_2.12 __pthread_spin_trylock F
+GLIBC_2.12 __pthread_spin_unlock F
+GLIBC_2.12 _cthread_init_routine D 0x4
+GLIBC_2.12 _cthreads_flockfile F
+GLIBC_2.12 _cthreads_ftrylockfile F
+GLIBC_2.12 _cthreads_funlockfile F
+GLIBC_2.12 _pthread_mutex_destroy F
+GLIBC_2.12 _pthread_mutex_init F
+GLIBC_2.12 _pthread_mutex_lock F
+GLIBC_2.12 _pthread_mutex_trylock F
+GLIBC_2.12 _pthread_mutex_unlock F
+GLIBC_2.12 _pthread_rwlock_destroy F
+GLIBC_2.12 _pthread_rwlock_init F
+GLIBC_2.12 _pthread_spin_lock F
+GLIBC_2.12 cthread_detach F
+GLIBC_2.12 cthread_fork F
+GLIBC_2.12 cthread_getspecific F
+GLIBC_2.12 cthread_keycreate F
+GLIBC_2.12 cthread_setspecific F
+GLIBC_2.12 flockfile F
+GLIBC_2.12 ftrylockfile F
+GLIBC_2.12 funlockfile F
+GLIBC_2.12 pthread_atfork F
+GLIBC_2.12 pthread_attr_destroy F
+GLIBC_2.12 pthread_attr_getdetachstate F
+GLIBC_2.12 pthread_attr_getguardsize F
+GLIBC_2.12 pthread_attr_getinheritsched F
+GLIBC_2.12 pthread_attr_getschedparam F
+GLIBC_2.12 pthread_attr_getschedpolicy F
+GLIBC_2.12 pthread_attr_getscope F
+GLIBC_2.12 pthread_attr_getstack F
+GLIBC_2.12 pthread_attr_getstackaddr F
+GLIBC_2.12 pthread_attr_getstacksize F
+GLIBC_2.12 pthread_attr_init F
+GLIBC_2.12 pthread_attr_setdetachstate F
+GLIBC_2.12 pthread_attr_setguardsize F
+GLIBC_2.12 pthread_attr_setinheritsched F
+GLIBC_2.12 pthread_attr_setschedparam F
+GLIBC_2.12 pthread_attr_setschedpolicy F
+GLIBC_2.12 pthread_attr_setscope F
+GLIBC_2.12 pthread_attr_setstack F
+GLIBC_2.12 pthread_attr_setstackaddr F
+GLIBC_2.12 pthread_attr_setstacksize F
+GLIBC_2.12 pthread_barrier_destroy F
+GLIBC_2.12 pthread_barrier_init F
+GLIBC_2.12 pthread_barrier_wait F
+GLIBC_2.12 pthread_barrierattr_destroy F
+GLIBC_2.12 pthread_barrierattr_getpshared F
+GLIBC_2.12 pthread_barrierattr_init F
+GLIBC_2.12 pthread_barrierattr_setpshared F
+GLIBC_2.12 pthread_cancel F
+GLIBC_2.12 pthread_cond_broadcast F
+GLIBC_2.12 pthread_cond_destroy F
+GLIBC_2.12 pthread_cond_init F
+GLIBC_2.12 pthread_cond_signal F
+GLIBC_2.12 pthread_cond_timedwait F
+GLIBC_2.12 pthread_cond_wait F
+GLIBC_2.12 pthread_condattr_destroy F
+GLIBC_2.12 pthread_condattr_getclock F
+GLIBC_2.12 pthread_condattr_getpshared F
+GLIBC_2.12 pthread_condattr_init F
+GLIBC_2.12 pthread_condattr_setclock F
+GLIBC_2.12 pthread_condattr_setpshared F
+GLIBC_2.12 pthread_create F
+GLIBC_2.12 pthread_detach F
+GLIBC_2.12 pthread_equal F
+GLIBC_2.12 pthread_exit F
+GLIBC_2.12 pthread_getattr_np F
+GLIBC_2.12 pthread_getconcurrency F
+GLIBC_2.12 pthread_getcpuclockid F
+GLIBC_2.12 pthread_getschedparam F
+GLIBC_2.12 pthread_getspecific F
+GLIBC_2.12 pthread_join F
+GLIBC_2.12 pthread_key_create F
+GLIBC_2.12 pthread_key_delete F
+GLIBC_2.12 pthread_kill F
+GLIBC_2.12 pthread_mutex_destroy F
+GLIBC_2.12 pthread_mutex_getprioceiling F
+GLIBC_2.12 pthread_mutex_init F
+GLIBC_2.12 pthread_mutex_lock F
+GLIBC_2.12 pthread_mutex_setprioceiling F
+GLIBC_2.12 pthread_mutex_timedlock F
+GLIBC_2.12 pthread_mutex_transfer_np F
+GLIBC_2.12 pthread_mutex_trylock F
+GLIBC_2.12 pthread_mutex_unlock F
+GLIBC_2.12 pthread_mutexattr_destroy F
+GLIBC_2.12 pthread_mutexattr_getprioceiling F
+GLIBC_2.12 pthread_mutexattr_getprotocol F
+GLIBC_2.12 pthread_mutexattr_getpshared F
+GLIBC_2.12 pthread_mutexattr_gettype F
+GLIBC_2.12 pthread_mutexattr_init F
+GLIBC_2.12 pthread_mutexattr_setprioceiling F
+GLIBC_2.12 pthread_mutexattr_setprotocol F
+GLIBC_2.12 pthread_mutexattr_setpshared F
+GLIBC_2.12 pthread_mutexattr_settype F
+GLIBC_2.12 pthread_once F
+GLIBC_2.12 pthread_rwlock_destroy F
+GLIBC_2.12 pthread_rwlock_init F
+GLIBC_2.12 pthread_rwlock_rdlock F
+GLIBC_2.12 pthread_rwlock_timedrdlock F
+GLIBC_2.12 pthread_rwlock_timedwrlock F
+GLIBC_2.12 pthread_rwlock_tryrdlock F
+GLIBC_2.12 pthread_rwlock_trywrlock F
+GLIBC_2.12 pthread_rwlock_unlock F
+GLIBC_2.12 pthread_rwlock_wrlock F
+GLIBC_2.12 pthread_rwlockattr_destroy F
+GLIBC_2.12 pthread_rwlockattr_getpshared F
+GLIBC_2.12 pthread_rwlockattr_init F
+GLIBC_2.12 pthread_rwlockattr_setpshared F
+GLIBC_2.12 pthread_self F
+GLIBC_2.12 pthread_setcancelstate F
+GLIBC_2.12 pthread_setcanceltype F
+GLIBC_2.12 pthread_setconcurrency F
+GLIBC_2.12 pthread_setschedparam F
+GLIBC_2.12 pthread_setschedprio F
+GLIBC_2.12 pthread_setspecific F
+GLIBC_2.12 pthread_sigmask F
+GLIBC_2.12 pthread_spin_destroy F
+GLIBC_2.12 pthread_spin_init F
+GLIBC_2.12 pthread_spin_lock F
+GLIBC_2.12 pthread_spin_trylock F
+GLIBC_2.12 pthread_spin_unlock F
+GLIBC_2.12 pthread_testcancel F
+GLIBC_2.12 pthread_yield F
+GLIBC_2.12 sem_close F
+GLIBC_2.12 sem_destroy F
+GLIBC_2.12 sem_getvalue F
+GLIBC_2.12 sem_init F
+GLIBC_2.12 sem_open F
+GLIBC_2.12 sem_post F
+GLIBC_2.12 sem_timedwait F
+GLIBC_2.12 sem_trywait F
+GLIBC_2.12 sem_unlink F
+GLIBC_2.12 sem_wait F
+GLIBC_2.2.6 GLIBC_2.2.6 A
+GLIBC_2.2.6 _IO_flockfile F
+GLIBC_2.2.6 _IO_ftrylockfile F
+GLIBC_2.2.6 _IO_funlockfile F
+GLIBC_2.21 GLIBC_2.21 A
+GLIBC_2.21 pthread_hurd_cond_timedwait_np F
+GLIBC_2.21 pthread_hurd_cond_wait_np F

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f772108f8bd57024474710d736cb2fb4a63f63ca

commit f772108f8bd57024474710d736cb2fb4a63f63ca
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Fri Jan 19 02:26:28 2018 +0100

    t/gsync-libc
    From: Agustina Arzille <avarzille@riseup.net>
    Subject: [PATCH] Introduce gsync-based locks to glibc.
    
    * hurd/Makefile: Add hurdlock.
    * hurd/Versions: Added new entry to export the above interface.
    * hurd/hurdlock.c: New file.
    * hurd/hurdlock.h: New file.
    * hurd/hurdpid.c: Include <lowlevellock.h>
      (_S_msg_proc_newids): Use lll_wait to synchronize.
    * hurd/hurdsig.c: (reauth_proc): Use __mutex_lock and __mutex_unlock.
    * hurd/setauth.c: Include <hurdlock.h>, use integer for synchronization.
    * hurd/sysvshm.c: Include <hurdlock.h>, use integer for synchronization.
    * mach/Makefile: Remove unneeded file
    * mach/lock-intern.h: Use lll to implement spinlocks.
    * mach/lowlevellock.h: New file
    * mach/mutex-init.c: Rewrite mutex initialization.
    * sysdeps/mach/Makefile: Add libmachuser as dependencies for some libs.
    * sysdeps/mach/libc-lock.h: Reimplemented libc internal locks
      with lll, cleanup routines now use gcc's cleanup attribute
    * sysdeps/mach/hurd/bits/errno.h: New errno values.
    * sysdeps/mach/hurd/libc-lock.h: Removed file.
    * sysdeps/mach/hurd/malloc-machine.h: Reimplemented malloc locks.
    * sysdeps/mach/hurd/setpgid.c: (setpgid): Use gsync for synchronization.
    * sysdeps/mach/hurd/setsid.c: (setsid): Likewise.
    
    t/libc_cleanup
    From: Agustina Arzille <avarzille@riseup.net>
    Subject: [PATCH] Use gcc's cleanup attributes
    
    cleanup routines now use gcc's cleanup attribute

diff --git a/hurd/Makefile b/hurd/Makefile
index 2b318c9..7a787d2 100644
--- a/hurd/Makefile
+++ b/hurd/Makefile
@@ -54,6 +54,7 @@ routines = hurdstartup hurdinit \
 	   vpprintf \
 	   ports-get ports-set hurdports hurdmsg \
 	   errno-loc \
+	   hurdlock \
 	   $(sig) $(dtable) $(inlines) port-cleanup report-wait xattr
 sig	= hurdsig hurdfault siginfo hurd-raise preempt-sig \
 	  trampoline longjmp-ts catch-exc exc2signal hurdkill sigunwind \
diff --git a/hurd/Versions b/hurd/Versions
index 602391c..af6a0e4 100644
--- a/hurd/Versions
+++ b/hurd/Versions
@@ -147,6 +147,13 @@ libc {
 
     # cthreads functions with stubs in libc
     __cthread_keycreate; __cthread_getspecific; __cthread_setspecific;
-    __libc_getspecific;
+  }
+
+  GLIBC_PRIVATE {
+    # Used by other libs.
+    __lll_abstimed_wait; __lll_abstimed_xwait;
+    __lll_abstimed_lock; __lll_robust_lock;
+    __lll_robust_abstimed_lock; __lll_robust_trylock;
+    __lll_robust_unlock;
   }
 }
diff --git a/hurd/hurdlock.c b/hurd/hurdlock.c
new file mode 100644
index 0000000..6ab180e
--- /dev/null
+++ b/hurd/hurdlock.c
@@ -0,0 +1,215 @@
+/* Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "hurdlock.h"
+#include <hurd.h>
+#include <time.h>
+#include <errno.h>
+
+/* Convert an absolute timeout in nanoseconds to a relative
+ * timeout in milliseconds. */
+static inline int __attribute__ ((gnu_inline))
+compute_reltime (const struct timespec *abstime, clockid_t clk)
+{
+  struct timespec ts;
+  __clock_gettime (clk, &ts);
+
+  ts.tv_sec = abstime->tv_sec - ts.tv_sec;
+  ts.tv_nsec = abstime->tv_nsec - ts.tv_nsec;
+
+  if (ts.tv_nsec < 0)
+    {
+      --ts.tv_sec;
+      ts.tv_nsec += 1000000000;
+    }
+
+  return (ts.tv_sec < 0 ? -1 :
+    (int)(ts.tv_sec * 1000 + ts.tv_nsec / 1000000));
+}
+
+int __lll_abstimed_wait (void *ptr, int val,
+  const struct timespec *tsp, int flags, int clk)
+{
+  int mlsec = compute_reltime (tsp, clk);
+  return (mlsec < 0 ? KERN_TIMEDOUT :
+    lll_timed_wait (ptr, val, mlsec, flags));
+}
+
+int __lll_abstimed_xwait (void *ptr, int lo, int hi,
+  const struct timespec *tsp, int flags, int clk)
+{
+  int mlsec = compute_reltime (tsp, clk);
+  return (mlsec < 0 ? KERN_TIMEDOUT :
+    lll_timed_xwait (ptr, lo, hi, mlsec, flags));
+}
+
+int __lll_abstimed_lock (void *ptr,
+  const struct timespec *tsp, int flags, int clk)
+{
+  if (lll_trylock (ptr) == 0)
+    return (0);
+
+  while (1)
+    {
+      if (atomic_exchange_acq ((int *)ptr, 2) == 0)
+        return (0);
+      else if (tsp->tv_nsec < 0 || tsp->tv_nsec >= 1000000000)
+        return (EINVAL);
+
+      int mlsec = compute_reltime (tsp, clk);
+      if (mlsec < 0 || lll_timed_wait (ptr,
+          2, mlsec, flags) == KERN_TIMEDOUT)
+        return (ETIMEDOUT);
+    }
+}
+
+/* Robust locks. */
+
+extern int __getpid (void) __attribute__ ((const));
+extern task_t __pid2task (int);
+
+/* Test if a given process id is still valid. */
+static inline int valid_pid (int pid)
+{
+  task_t task = __pid2task (pid);
+  if (task == MACH_PORT_NULL)
+    return (0);
+
+  __mach_port_deallocate (__mach_task_self (), task);
+  return (1);
+}
+
+/* Robust locks have currently no support from the kernel; they
+ * are simply implemented with periodic polling. When sleeping, the
+ * maximum blocking time is determined by this constant. */
+#define MAX_WAIT_TIME   1500
+
+int __lll_robust_lock (void *ptr, int flags)
+{
+  int *iptr = (int *)ptr;
+  int id = __getpid ();
+  int wait_time = 25;
+  unsigned int val;
+
+  /* Try to set the lock word to our PID if it's clear. Otherwise,
+   * mark it as having waiters. */
+  while (1)
+    {
+      val = *iptr;
+      if (!val && atomic_compare_and_exchange_bool_acq (iptr, id, 0) == 0)
+        return (0);
+      else if (atomic_compare_and_exchange_bool_acq (iptr,
+          val | LLL_WAITERS, val) == 0)
+        break;
+    }
+
+  for (id |= LLL_WAITERS ; ; )
+    {
+      val = *iptr;
+      if (!val && atomic_compare_and_exchange_bool_acq (iptr, id, 0) == 0)
+        return (0);
+      else if (val && !valid_pid (val & LLL_OWNER_MASK))
+        {
+          if (atomic_compare_and_exchange_bool_acq (iptr, id, val) == 0)
+            return (EOWNERDEAD);
+        }
+      else
+        {
+          lll_timed_wait (iptr, val, wait_time, flags);
+          if (wait_time < MAX_WAIT_TIME)
+            wait_time <<= 1;
+        }
+    }
+}
+
+int __lll_robust_abstimed_lock (void *ptr,
+  const struct timespec *tsp, int flags, int clk)
+{
+  int *iptr = (int *)ptr;
+  int id = __getpid ();
+  int wait_time = 25;
+  unsigned int val;
+
+  while (1)
+    {
+      val = *iptr;
+      if (!val && atomic_compare_and_exchange_bool_acq (iptr, id, 0) == 0)
+        return (0);
+      else if (atomic_compare_and_exchange_bool_acq (iptr,
+          val | LLL_WAITERS, val) == 0)
+        break;
+    }
+
+  for (id |= LLL_WAITERS ; ; )
+    {
+      val = *iptr;
+      if (!val && atomic_compare_and_exchange_bool_acq (iptr, id, 0) == 0)
+        return (0);
+      else if (val && !valid_pid (val & LLL_OWNER_MASK))
+        {
+          if (atomic_compare_and_exchange_bool_acq (iptr, id, val) == 0)
+            return (EOWNERDEAD);
+        }
+      else
+        {
+          int mlsec = compute_reltime (tsp, clk);
+          if (mlsec < 0)
+            return (ETIMEDOUT);
+          else if (mlsec > wait_time)
+            mlsec = wait_time;
+
+          int res = lll_timed_wait (iptr, val, mlsec, flags);
+          if (res == KERN_TIMEDOUT)
+            return (ETIMEDOUT);
+          else if (wait_time < MAX_WAIT_TIME)
+            wait_time <<= 1;
+        }
+    }
+}
+
+int __lll_robust_trylock (void *ptr)
+{
+  int *iptr = (int *)ptr;
+  int id = __getpid ();
+  unsigned int val = *iptr;
+
+  if (!val)
+    {
+      if (atomic_compare_and_exchange_bool_acq (iptr, id, 0) == 0)
+        return (0);
+    }
+  else if (!valid_pid (val & LLL_OWNER_MASK) &&
+      atomic_compare_and_exchange_bool_acq (iptr, id, val) == 0)
+    return (EOWNERDEAD);
+
+  return (EBUSY);
+}
+
+void __lll_robust_unlock (void *ptr, int flags)
+{
+  unsigned int val = atomic_load_relaxed((unsigned int *)ptr);
+  while (1)
+    {
+      if (val & LLL_WAITERS)
+        {
+          lll_set_wake (ptr, 0, flags);
+          break;
+        }
+      else if (atomic_compare_exchange_weak_release ((unsigned int *)ptr, &val, 0))
+        break;
+    }
+}
diff --git a/hurd/hurdlock.h b/hurd/hurdlock.h
new file mode 100644
index 0000000..e3e7369
--- /dev/null
+++ b/hurd/hurdlock.h
@@ -0,0 +1,124 @@
+/* Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _HURD_LOCK_H
+#define _HURD_LOCK_H   1
+
+#include <mach/lowlevellock.h>
+
+struct timespec;
+
+/* Flags for robust locks. */
+#define LLL_WAITERS      (1U << 31)
+#define LLL_DEAD_OWNER   (1U << 30)
+
+#define LLL_OWNER_MASK   ~(LLL_WAITERS | LLL_DEAD_OWNER)
+
+/* Wait on 64-bit address PTR, without blocking if its contents
+ * are different from the pair <LO, HI>. */
+#define lll_xwait(ptr, lo, hi, flags) \
+  __gsync_wait (__mach_task_self (), \
+    (vm_offset_t)ptr, lo, hi, 0, flags | GSYNC_QUAD)
+
+/* Same as 'lll_wait', but only block for MLSEC milliseconds. */
+#define lll_timed_wait(ptr, val, mlsec, flags) \
+  __gsync_wait (__mach_task_self (), \
+    (vm_offset_t)ptr, val, 0, mlsec, flags | GSYNC_TIMED)
+
+/* Same as 'lll_xwait', but only block for MLSEC milliseconds. */
+#define lll_timed_xwait(ptr, lo, hi, mlsec, flags) \
+  __gsync_wait (__mach_task_self (), (vm_offset_t)ptr, \
+    lo, hi, mlsec, flags | GSYNC_TIMED | GSYNC_QUAD)
+
+/* Same as 'lll_wait', but only block until TSP elapses,
+ * using clock CLK. */
+extern int __lll_abstimed_wait (void *__ptr, int __val,
+  const struct timespec *__tsp, int __flags, int __clk);
+
+/* Same as 'lll_xwait', but only block until TSP elapses,
+ * using clock CLK. */
+extern int __lll_abstimed_xwait (void *__ptr, int __lo, int __hi,
+  const struct timespec *__tsp, int __flags, int __clk);
+
+/* Same as 'lll_lock', but return with an error if TSP elapses,
+ * using clock CLK. */
+extern int __lll_abstimed_lock (void *__ptr,
+  const struct timespec *__tsp, int __flags, int __clk);
+
+/* Acquire the lock at PTR, but return with an error if
+ * the process containing the owner thread dies. */
+extern int __lll_robust_lock (void *__ptr, int __flags);
+
+/* Same as '__lll_robust_lock', but only block until TSP
+ * elapses, using clock CLK. */
+extern int __lll_robust_abstimed_lock (void *__ptr,
+  const struct timespec *__tsp, int __flags, int __clk);
+
+/* Same as '__lll_robust_lock', but return with an error
+ * if the lock cannot be acquired without blocking. */
+extern int __lll_robust_trylock (void *__ptr);
+
+/* Wake one or more threads waiting on address PTR,
+ * setting its value to VAL before doing so. */
+#define lll_set_wake(ptr, val, flags) \
+  __gsync_wake (__mach_task_self (), \
+    (vm_offset_t)ptr, val, flags | GSYNC_MUTATE)
+
+/* Release the robust lock at PTR. */
+extern void __lll_robust_unlock (void *__ptr, int __flags);
+
+/* Rearrange threads waiting on address SRC to instead wait on
+ * DST, waking one of them if WAIT_ONE is non-zero. */
+#define lll_requeue(src, dst, wake_one, flags) \
+  __gsync_requeue (__mach_task_self (), (vm_offset_t)src, \
+    (vm_offset_t)dst, (boolean_t)wake_one, flags)
+
+/* The following are hacks that allow us to simulate optional
+ * parameters in C, to avoid having to pass the clock id for
+ * every one of these calls, defaulting to CLOCK_REALTIME if
+ * no argument is passed. */
+
+#define lll_abstimed_wait(ptr, val, tsp, flags, ...)   \
+  ({   \
+     const clockid_t __clk[] = { CLOCK_REALTIME, ##__VA_ARGS__ };   \
+     __lll_abstimed_wait ((ptr), (val), (tsp), (flags),   \
+       __clk[sizeof (__clk) / sizeof (__clk[0]) - 1]);   \
+   })
+
+#define lll_abstimed_xwait(ptr, lo, hi, tsp, flags, ...)   \
+  ({   \
+     const clockid_t __clk[] = { CLOCK_REALTIME, ##__VA_ARGS__ };   \
+     __lll_abstimed_xwait ((ptr), (lo), (hi), (tsp), (flags),   \
+       __clk[sizeof (__clk) / sizeof (__clk[0]) - 1]);   \
+   })
+
+#define lll_abstimed_lock(ptr, tsp, flags, ...)   \
+  ({   \
+     const clockid_t __clk[] = { CLOCK_REALTIME, ##__VA_ARGS__ };   \
+     __lll_abstimed_lock ((ptr), (tsp), (flags),   \
+       __clk[sizeof (__clk) / sizeof (__clk[0]) - 1]);   \
+   })
+
+#define lll_robust_abstimed_lock(ptr, tsp, flags, ...)   \
+  ({   \
+     const clockid_t __clk[] = { CLOCK_REALTIME, ##__VA_ARGS__ };   \
+     __lll_robust_abstimed_lock ((ptr), (tsp), (flags),   \
+       __clk[sizeof (__clk) / sizeof (__clk[0]) - 1]);   \
+   })
+
+
+#endif
diff --git a/hurd/hurdpid.c b/hurd/hurdpid.c
index e1dd093..33659cc 100644
--- a/hurd/hurdpid.c
+++ b/hurd/hurdpid.c
@@ -16,6 +16,8 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <hurd.h>
+#include <lowlevellock.h>
+
 pid_t _hurd_pid, _hurd_ppid, _hurd_pgrp;
 int _hurd_orphaned;
 
@@ -66,6 +68,7 @@ _S_msg_proc_newids (mach_port_t me,
 
   /* Notify any waiting user threads that the id change as been completed.  */
   ++_hurd_pids_changed_stamp;
+  lll_wake (&_hurd_pids_changed_stamp, GSYNC_BROADCAST);
 
   return 0;
 }
diff --git a/hurd/hurdsig.c b/hurd/hurdsig.c
index ea76be7..fdadd5b 100644
--- a/hurd/hurdsig.c
+++ b/hurd/hurdsig.c
@@ -1362,14 +1362,14 @@ reauth_proc (mach_port_t new)
   __mach_port_destroy (__mach_task_self (), ref);
 
   /* Set the owner of the process here too. */
-  mutex_lock (&_hurd_id.lock);
+  __mutex_lock (&_hurd_id.lock);
   if (!_hurd_check_ids ())
     HURD_PORT_USE (&_hurd_ports[INIT_PORT_PROC],
 		   __proc_setowner (port,
 				    (_hurd_id.gen.nuids
 				     ? _hurd_id.gen.uids[0] : 0),
 				    !_hurd_id.gen.nuids));
-  mutex_unlock (&_hurd_id.lock);
+  __mutex_unlock (&_hurd_id.lock);
 
   (void) &reauth_proc;		/* Silence compiler warning.  */
 }
diff --git a/hurd/setauth.c b/hurd/setauth.c
index deece20..025be58 100644
--- a/hurd/setauth.c
+++ b/hurd/setauth.c
@@ -18,14 +18,13 @@
 #include <hurd.h>
 #include <hurd/port.h>
 #include <hurd/id.h>
+#include <hurdlock.h>
 #include "set-hooks.h"
 
 /* Things in the library which want to be run when the auth port changes.  */
 DEFINE_HOOK (_hurd_reauth_hook, (auth_t new_auth));
 
-#include <cthreads.h>
-static struct mutex reauth_lock = MUTEX_INITIALIZER;
-
+static unsigned int reauth_lock = LLL_INITIALIZER;
 
 /* Set the auth port to NEW, and reauthenticate
    everything used by the library.  */
diff --git a/mach/Makefile b/mach/Makefile
index e0d1ffb..2683587 100644
--- a/mach/Makefile
+++ b/mach/Makefile
@@ -23,7 +23,7 @@ headers = mach_init.h mach.h mach_error.h mach-shortcuts.h mach/mach_traps.h \
 	  $(interface-headers) mach/mach.h mach/mig_support.h mach/error.h \
 	  $(lock-headers) machine-sp.h bits/mach/param.h
 lock = spin-solid spin-lock mutex-init mutex-solid
-lock-headers = lock-intern.h machine-lock.h spin-lock.h
+lock-headers = lock-intern.h spin-lock.h
 routines = $(mach-syscalls) $(mach-shortcuts) \
 	   mach_init mig_strncpy msg \
 	   mig-alloc mig-dealloc mig-reply \
diff --git a/mach/lock-intern.h b/mach/lock-intern.h
index f8874c7..c1d5984 100644
--- a/mach/lock-intern.h
+++ b/mach/lock-intern.h
@@ -19,12 +19,19 @@
 #define	_LOCK_INTERN_H
 
 #include <sys/cdefs.h>
-#include <machine-lock.h>
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+#include <lowlevellock.h>
+#endif
 
 #ifndef _EXTERN_INLINE
 #define _EXTERN_INLINE __extern_inline
 #endif
 
+/* The type of a spin lock variable. */
+typedef unsigned int __spin_lock_t;
+
+/* Static initializer for spinlocks. */
+#define __SPIN_LOCK_INITIALIZER   0
 
 /* Initialize LOCK.  */
 
@@ -34,7 +41,7 @@ extern void __spin_lock_init (__spin_lock_t *__lock);
 _EXTERN_INLINE void
 __spin_lock_init (__spin_lock_t *__lock)
 {
-  *__lock = __SPIN_LOCK_INITIALIZER;
+  *__lock = LLL_INITIALIZER;
 }
 #endif
 
@@ -50,31 +57,47 @@ extern void __spin_lock (__spin_lock_t *__lock);
 _EXTERN_INLINE void
 __spin_lock (__spin_lock_t *__lock)
 {
-  if (! __spin_try_lock (__lock))
-    __spin_lock_solid (__lock);
+  lll_lock (__lock, 0);
 }
 #endif
-
-/* Name space-clean internal interface to mutex locks.
 
-   Code internal to the C library uses these functions to lock and unlock
-   mutex locks.  These locks are of type `struct mutex', defined in
-   <cthreads.h>.  The functions here are name space-clean.  If the program
-   is linked with the cthreads library, `__mutex_lock_solid' and
-   `__mutex_unlock_solid' will invoke the corresponding cthreads functions
-   to implement real mutex locks.  If not, simple stub versions just use
-   spin locks.  */
+/* Unlock LOCK. */
+extern void __spin_unlock (__spin_lock_t *__lock);
 
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+_EXTERN_INLINE void
+__spin_unlock (__spin_lock_t *__lock)
+{
+  lll_unlock (__lock, 0);
+}
+#endif
 
-/* Initialize the newly allocated mutex lock LOCK for further use.  */
-extern void __mutex_init (void *__lock);
+/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */
+extern int __spin_try_lock (__spin_lock_t *__lock);
 
-/* Lock LOCK, blocking if we can't get it.  */
-extern void __mutex_lock_solid (void *__lock);
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+_EXTERN_INLINE int
+__spin_try_lock (__spin_lock_t *__lock)
+{
+  return (lll_trylock (__lock) == 0);
+}
+#endif
+
+/* Return nonzero if LOCK is locked. */
+extern int __spin_lock_locked (__spin_lock_t *__lock);
 
-/* Finish unlocking LOCK, after the spin lock LOCK->held has already been
-   unlocked.  This function will wake up any thread waiting on LOCK.  */
-extern void __mutex_unlock_solid (void *__lock);
+#if defined __USE_EXTERN_INLINES && defined _LIBC
+_EXTERN_INLINE int
+__spin_lock_locked (__spin_lock_t *__lock)
+{
+  return (*(volatile __spin_lock_t *)__lock != 0);
+}
+#endif
+
+/* Name space-clean internal interface to mutex locks. */
+
+/* Initialize the newly allocated mutex lock LOCK for further use.  */
+extern void __mutex_init (void *__lock);
 
 /* Lock the mutex lock LOCK.  */
 
@@ -84,8 +107,7 @@ extern void __mutex_lock (void *__lock);
 _EXTERN_INLINE void
 __mutex_lock (void *__lock)
 {
-  if (! __spin_try_lock ((__spin_lock_t *) __lock))
-    __mutex_lock_solid (__lock);
+  __spin_lock ((__spin_lock_t *)__lock);
 }
 #endif
 
@@ -97,8 +119,7 @@ extern void __mutex_unlock (void *__lock);
 _EXTERN_INLINE void
 __mutex_unlock (void *__lock)
 {
-  __spin_unlock ((__spin_lock_t *) __lock);
-  __mutex_unlock_solid (__lock);
+  __spin_unlock ((__spin_lock_t *)__lock);
 }
 #endif
 
@@ -109,7 +130,7 @@ extern int __mutex_trylock (void *__lock);
 _EXTERN_INLINE int
 __mutex_trylock (void *__lock)
 {
-  return __spin_try_lock ((__spin_lock_t *) __lock);
+  return (__spin_try_lock ((__spin_lock_t *)__lock));
 }
 #endif
 
diff --git a/mach/lowlevellock.h b/mach/lowlevellock.h
new file mode 100644
index 0000000..f22910f
--- /dev/null
+++ b/mach/lowlevellock.h
@@ -0,0 +1,80 @@
+/* Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef __MACH_LOWLEVELLOCK_H__
+#define __MACH_LOWLEVELLOCK_H__   1
+
+#include <mach/gnumach.h>
+#include <atomic.h>
+
+/* Gsync flags. */
+#ifndef GSYNC_SHARED
+  #define GSYNC_SHARED      0x01
+  #define GSYNC_QUAD        0x02
+  #define GSYNC_TIMED       0x04
+  #define GSYNC_BROADCAST   0x08
+  #define GSYNC_MUTATE      0x10
+#endif
+
+/* Static initializer for low-level locks. */
+#define LLL_INITIALIZER   0
+
+/* Wait on address PTR, without blocking if its contents
+ * are different from VAL. */
+#define lll_wait(ptr, val, flags)   \
+  __gsync_wait (__mach_task_self (),   \
+    (vm_offset_t)(ptr), (val), 0, 0, (flags))
+
+/* Wake one or more threads waiting on address PTR. */
+#define lll_wake(ptr, flags)   \
+  __gsync_wake (__mach_task_self (), (vm_offset_t)(ptr), 0, (flags))
+
+/* Acquire the lock at PTR. */
+#define lll_lock(ptr, flags)   \
+  ({   \
+     int *__iptr = (int *)(ptr);   \
+     int __flags = (flags);   \
+     if (*__iptr != 0 ||   \
+         atomic_compare_and_exchange_bool_acq (__iptr, 1, 0) != 0)   \
+       while (1)   \
+         {   \
+           if (atomic_exchange_acq (__iptr, 2) == 0)   \
+             break;   \
+           lll_wait (__iptr, 2, __flags);   \
+         }   \
+     (void)0;   \
+   })
+
+/* Try to acquire the lock at PTR, without blocking.
+ * Evaluates to zero on success. */
+#define lll_trylock(ptr)   \
+  ({   \
+     int *__iptr = (int *)(ptr);   \
+     *__iptr == 0 &&   \
+       atomic_compare_and_exchange_bool_acq (__iptr, 1, 0) == 0 ? 0 : -1;   \
+   })
+
+/* Release the lock at PTR. */
+#define lll_unlock(ptr, flags)   \
+  ({   \
+     int *__iptr = (int *)(ptr);   \
+     if (atomic_exchange_rel (__iptr, 0) == 2)   \
+       lll_wake (__iptr, (flags));   \
+     (void)0;   \
+   })
+
+#endif
diff --git a/mach/mutex-init.c b/mach/mutex-init.c
index cab0a86..776fec5 100644
--- a/mach/mutex-init.c
+++ b/mach/mutex-init.c
@@ -17,13 +17,10 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <lock-intern.h>
-#include <cthreads.h>
+#include <lowlevellock.h>
 
 void
 __mutex_init (void *lock)
 {
-  /* This happens to be name space-safe because it is a macro.
-     It invokes only spin_lock_init, which is a macro for __spin_lock_init;
-     and cthread_queue_init, which is a macro for some simple code.  */
-  mutex_init ((struct mutex *) lock);
+  *(int *)lock = LLL_INITIALIZER;
 }
diff --git a/manual/errno.texi b/manual/errno.texi
index 73272fd..8917ccc 100644
--- a/manual/errno.texi
+++ b/manual/errno.texi
@@ -882,6 +882,16 @@ the normal result is for the operations affected to complete with this
 error; @pxref{Cancel AIO Operations}.
 @end deftypevr
 
+@deftypevr Macro int EOWNERDEAD
+@standards{GNU, errno.h}
+@errno{EOWNERDEAD, 120, Owner died}
+@end deftypevr
+
+@deftypevr Macro int ENOTRECOVERABLE
+@standards{GNU, errno.h}
+@errno{ENOTRECOVERABLE, 121, State not recoverable}
+@end deftypevr
+
 
 @emph{The following error codes are defined by the Linux/i386 kernel.
 They are not yet documented.}
diff --git a/sysdeps/mach/Makefile b/sysdeps/mach/Makefile
index 2b48b13..475894b 100644
--- a/sysdeps/mach/Makefile
+++ b/sysdeps/mach/Makefile
@@ -50,4 +50,30 @@ mach-before-compile:
 before-compile += $(mach-before-compile)
 endif
 
+ifeq (crypt,$(subdir))
+  LDLIBS-crypt.so += $(objdir)/mach/libmachuser.so
+else ifeq (dlfcn,$(subdir))
+  LDLIBS-dl.so += $(objdir)/mach/libmachuser.so
+else ifeq (nis,$(subdir))
+  LDLIBS-nsl.so += $(objdir)/mach/libmachuser.so
+  LDLIBS-nss_nis.so += $(objdir)/mach/libmachuser.so
+  LDLIBS-nss_nisplus.so += $(objdir)/mach/libmachuser.so
+  LDLIBS-nss_compat.so += $(objdir)/mach/libmachuser.so
+else ifeq (nss,$(subdir))
+  LDLIBS-nss.so += $(objdir)/mach/libmachuser.so
+  LDLIBS-nss_files.so += $(objdir)/mach/libmachuser.so
+  LDLIBS-nss_db.so += $(objdir)/mach/libmachuser.so
+  LDLIBS-nss_compat.so += $(objdir)/mach/libmachuser.so
+else ifeq (hesiod,$(subdir))
+  LDLIBS-nss_hesiod.so += $(objdir)/mach/libmachuser.so
+else ifeq (posix,$(subdir))
+  LDLIBS-tst-rfc3484 += $(objdir)/mach/libmachuser.so
+  LDLIBS-tst-rfc3484-2 += $(objdir)/mach/libmachuser.so
+  LDLIBS-tst-rfc3484-3 += $(objdir)/mach/libmachuser.so
+else ifeq (nscd,$(subdir))
+  LDLIBS-nscd += $(objdir)/mach/libmachuser.so
+endif
+
+LDLIBS-pthread.so += $(objdir)/mach/libmachuser.so
+
 endif	# in-Makerules
diff --git a/sysdeps/mach/hurd/bits/errno.h b/sysdeps/mach/hurd/bits/errno.h
index f16cd51..9997307 100644
--- a/sysdeps/mach/hurd/bits/errno.h
+++ b/sysdeps/mach/hurd/bits/errno.h
@@ -127,6 +127,8 @@ enum __error_t_codes
   EPROTO                         = 0x40000074,	/* Protocol error */
   ETIME                          = 0x40000075,	/* Timer expired */
   ECANCELED                      = 0x40000077,	/* Operation canceled */
+  EOWNERDEAD                     = 0x40000078,	/* Robust mutex owner died */
+  ENOTRECOVERABLE                = 0x40000079,	/* Robust mutex irrecoverable */
 
 /* Errors from <mach/message.h>.  */
   EMACH_SEND_IN_PROGRESS         = 0x10000001,
@@ -322,6 +324,8 @@ enum __error_t_codes
 #define EPROTO                         0x40000074
 #define ETIME                          0x40000075
 #define ECANCELED                      0x40000077
+#define EOWNERDEAD                     0x40000078
+#define ENOTRECOVERABLE                0x40000079
 
 /* Errors from <mach/message.h>.  */
 #define EMACH_SEND_IN_PROGRESS         0x10000001
@@ -405,6 +409,6 @@ enum __error_t_codes
 #define ED_NO_MEMORY                   2508
 #define ED_READ_ONLY                   2509
 
-#define _HURD_ERRNOS 120
+#define _HURD_ERRNOS 122
 
 #endif /* bits/errno.h.  */
diff --git a/sysdeps/mach/hurd/cthreads.c b/sysdeps/mach/hurd/cthreads.c
index 3568930..05c48e4 100644
--- a/sysdeps/mach/hurd/cthreads.c
+++ b/sysdeps/mach/hurd/cthreads.c
@@ -18,6 +18,7 @@
 #include <libc-lock.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <cthreads.h>
 
 /* This serves as stub "self" pointer for libc locks when TLS is not initialized
    yet.  */
@@ -51,13 +52,3 @@ __cthread_setspecific (cthread_key_t key, void *val)
   __set_errno (ENOSYS);
   return -1;
 }
-
-/* Call cthread_getspecific which gets a pointer to the return value instead
-   of just returning it.  */
-void *
-__libc_getspecific (cthread_key_t key)
-{
-  void *val;
-  __cthread_getspecific (key, &val);
-  return val;
-}
diff --git a/sysdeps/mach/hurd/libc-lock.h b/sysdeps/mach/hurd/libc-lock.h
deleted file mode 100644
index e30f9b1..0000000
--- a/sysdeps/mach/hurd/libc-lock.h
+++ /dev/null
@@ -1,219 +0,0 @@
-/* libc-internal interface for mutex locks.  Hurd version using Mach cthreads.
-   Copyright (C) 1996-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#ifndef _LIBC_LOCK_H
-#define _LIBC_LOCK_H 1
-
-#if (_LIBC - 0) || (_CTHREADS_ - 0)
-# if (_LIBC - 0)
-#  include <tls.h>
-# endif
-#include <cthreads.h>
-
-/* The locking here is very inexpensive, even for inlining.  */
-#define _IO_lock_inexpensive  1
-
-typedef struct mutex __libc_lock_t;
-typedef struct
-{
-  struct mutex mutex;
-  void *owner;
-  int count;
-} __libc_lock_recursive_t;
-typedef __libc_lock_recursive_t __rtld_lock_recursive_t;
-
-extern char __libc_lock_self0[0];
-#define __libc_lock_owner_self() (__LIBC_NO_TLS() ? &__libc_lock_self0 : THREAD_SELF)
-
-#else
-typedef struct __libc_lock_opaque__ __libc_lock_t;
-typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
-#endif
-
-/* Define a lock variable NAME with storage class CLASS.  The lock must be
-   initialized with __libc_lock_init before it can be used (or define it
-   with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
-   declare a lock defined in another module.  In public structure
-   definitions you must use a pointer to the lock structure (i.e., NAME
-   begins with a `*'), because its storage size will not be known outside
-   of libc.  */
-#define __libc_lock_define(CLASS,NAME) \
-  CLASS __libc_lock_t NAME;
-
-/* Define an initialized lock variable NAME with storage class CLASS.  */
-#define _LIBC_LOCK_INITIALIZER MUTEX_INITIALIZER
-#define __libc_lock_define_initialized(CLASS,NAME) \
-  CLASS __libc_lock_t NAME = _LIBC_LOCK_INITIALIZER;
-
-/* Initialize the named lock variable, leaving it in a consistent, unlocked
-   state.  */
-#define __libc_lock_init(NAME) __mutex_init (&(NAME))
-
-/* Finalize the named lock variable, which must be locked.  It cannot be
-   used again until __libc_lock_init is called again on it.  This must be
-   called on a lock variable before the containing storage is reused.  */
-#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
-#define __libc_lock_fini_recursive(NAME) __mutex_unlock (&(NAME).mutex)
-#define __rtld_lock_fini_recursive(NAME) __mutex_unlock (&(NAME).mutex)
-
-
-/* Lock the named lock variable.  */
-#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
-
-/* Lock the named lock variable.  */
-#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
-
-/* Unlock the named lock variable.  */
-#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
-
-
-#define __libc_lock_define_recursive(CLASS,NAME) \
-  CLASS __libc_lock_recursive_t NAME;
-#define _LIBC_LOCK_RECURSIVE_INITIALIZER { MUTEX_INITIALIZER, 0, 0 }
-#define __libc_lock_define_initialized_recursive(CLASS,NAME) \
-  CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
-
-#define __rtld_lock_define_recursive(CLASS,NAME) \
-  __libc_lock_define_recursive (CLASS, NAME)
-#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
-  _LIBC_LOCK_RECURSIVE_INITIALIZER
-#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
-  __libc_lock_define_initialized_recursive (CLASS, NAME)
-
-#define __libc_lock_init_recursive(NAME) \
-  ({ __libc_lock_recursive_t *const __lock = &(NAME); \
-     __lock->owner = 0; mutex_init (&__lock->mutex); })
-
-#define __libc_lock_trylock_recursive(NAME)				      \
-  ({ __libc_lock_recursive_t *const __lock = &(NAME);			      \
-     void *__self = __libc_lock_owner_self ();				      \
-     __mutex_trylock (&__lock->mutex)					      \
-     ? (__lock->owner = __self, __lock->count = 1, 0)			      \
-     : __lock->owner == __self ? (++__lock->count, 0) : 1; })
-
-#define __libc_lock_lock_recursive(NAME)				      \
-  ({ __libc_lock_recursive_t *const __lock = &(NAME);			      \
-     void *__self = __libc_lock_owner_self ();				      \
-     if (__mutex_trylock (&__lock->mutex)				      \
-	 || (__lock->owner != __self					      \
-	     && (__mutex_lock (&__lock->mutex), 1)))			      \
-       __lock->owner = __self, __lock->count = 1;			      \
-     else								      \
-       ++__lock->count;							      \
-  })
-#define __libc_lock_unlock_recursive(NAME)				      \
-  ({ __libc_lock_recursive_t *const __lock = &(NAME);			      \
-     if (--__lock->count == 0)						      \
-       {								      \
-	 __lock->owner = 0;						      \
-	 __mutex_unlock (&__lock->mutex);				      \
-       }								      \
-  })
-
-
-#define __rtld_lock_initialize(NAME) \
-  (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
-#define __rtld_lock_trylock_recursive(NAME) \
-  __libc_lock_trylock_recursive (NAME)
-#define __rtld_lock_lock_recursive(NAME) \
-  __libc_lock_lock_recursive(NAME)
-#define __rtld_lock_unlock_recursive(NAME) \
-  __libc_lock_unlock_recursive (NAME)
-
-
-/* XXX for now */
-#define __libc_rwlock_define		__libc_lock_define
-#define __libc_rwlock_define_initialized __libc_lock_define_initialized
-#define __libc_rwlock_init		__libc_lock_init
-#define __libc_rwlock_fini		__libc_lock_fini
-#define __libc_rwlock_rdlock		__libc_lock_lock
-#define __libc_rwlock_wrlock		__libc_lock_lock
-#define __libc_rwlock_tryrdlock		__libc_lock_trylock
-#define __libc_rwlock_trywrlock		__libc_lock_trylock
-#define __libc_rwlock_unlock		__libc_lock_unlock
-
-
-/* Start a critical region with a cleanup function */
-#define __libc_cleanup_region_start(DOIT, FCT, ARG)			    \
-{									    \
-  typeof (***(FCT)) *__save_FCT = (DOIT) ? (FCT) : 0;			    \
-  typeof (ARG) __save_ARG = ARG;					    \
-  /* close brace is in __libc_cleanup_region_end below. */
-
-/* End a critical region started with __libc_cleanup_region_start. */
-#define __libc_cleanup_region_end(DOIT)					    \
-  if ((DOIT) && __save_FCT != 0)					    \
-    (*__save_FCT)(__save_ARG);						    \
-}
-
-/* Sometimes we have to exit the block in the middle.  */
-#define __libc_cleanup_end(DOIT)					    \
-  if ((DOIT) && __save_FCT != 0)					    \
-    (*__save_FCT)(__save_ARG);						    \
-
-#define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg)
-#define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute)
-
-#if (_CTHREADS_ - 0)
-
-/* Use mutexes as once control variables. */
-
-struct __libc_once
-  {
-    __libc_lock_t lock;
-    int done;
-  };
-
-#define __libc_once_define(CLASS,NAME) \
-  CLASS struct __libc_once NAME = { MUTEX_INITIALIZER, 0 }
-
-/* Call handler iff the first call.  */
-#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
-  do {									      \
-    __libc_lock_lock (ONCE_CONTROL.lock);				      \
-    if (!ONCE_CONTROL.done)						      \
-      (INIT_FUNCTION) ();						      \
-    ONCE_CONTROL.done = 1;						      \
-    __libc_lock_unlock (ONCE_CONTROL.lock);				      \
-  } while (0)
-
-/* Get once control variable.  */
-#define __libc_once_get(ONCE_CONTROL)	((ONCE_CONTROL).done != 0)
-
-#ifdef _LIBC
-/* We need portable names for some functions.  E.g., when they are
-   used as argument to __libc_cleanup_region_start.  */
-#define __libc_mutex_unlock __mutex_unlock
-#endif
-
-/* Type for key of thread specific data.  */
-typedef cthread_key_t __libc_key_t;
-
-#define __libc_key_create(KEY,DEST) __cthread_keycreate (KEY)
-#define __libc_setspecific(KEY,VAL) __cthread_setspecific (KEY, VAL)
-void *__libc_getspecific (__libc_key_t key);
-
-#endif /* _CTHREADS_ */
-
-/* Hide the definitions which are only supposed to be used inside libc in
-   a separate file.  This file is not present in the installation!  */
-#ifdef _LIBC
-# include <libc-lockP.h>
-#endif
-
-#endif	/* libc-lock.h */
diff --git a/sysdeps/mach/hurd/setpgid.c b/sysdeps/mach/hurd/setpgid.c
index 32186a2..98b1341 100644
--- a/sysdeps/mach/hurd/setpgid.c
+++ b/sysdeps/mach/hurd/setpgid.c
@@ -19,6 +19,7 @@
 #include <unistd.h>
 #include <hurd.h>
 #include <hurd/port.h>
+#include <lowlevellock.h>
 
 /* Set the process group ID of the process matching PID to PGID.
    If PID is zero, the current process's process group ID is set.
@@ -38,14 +39,7 @@ __setpgid (pid_t pid, pid_t pgid)
     /* Synchronize with the signal thread to make sure we have
        received and processed proc_newids before returning to the user.  */
     while (_hurd_pids_changed_stamp == stamp)
-      {
-#ifdef noteven
-	/* XXX we have no need for a mutex, but cthreads demands one.  */
-	__condition_wait (&_hurd_pids_changed_sync, NULL);
-#else
-	__swtch_pri(0);
-#endif
-      }
+      lll_wait (&_hurd_pids_changed_stamp, stamp, 0);
 
   return 0;
 
diff --git a/sysdeps/mach/hurd/setsid.c b/sysdeps/mach/hurd/setsid.c
index 0f6b24b..7b98936 100644
--- a/sysdeps/mach/hurd/setsid.c
+++ b/sysdeps/mach/hurd/setsid.c
@@ -21,6 +21,7 @@
 #include <hurd/port.h>
 #include <hurd/fd.h>
 #include <hurd/ioctl.h>
+#include <lowlevellock.h>
 
 /* Create a new session with the calling process as its leader.
    The process group IDs of the session and the calling process
@@ -55,14 +56,7 @@ __setsid (void)
 	 returned by `getpgrp ()' in other threads) has been updated before
 	 we return.  */
       while (_hurd_pids_changed_stamp == stamp)
-	{
-#ifdef noteven
-	  /* XXX we have no need for a mutex, but cthreads demands one.  */
-	  __condition_wait (&_hurd_pids_changed_sync, NULL);
-#else
-	  __swtch_pri (0);
-#endif
-	}
+        lll_wait (&_hurd_pids_changed_stamp, stamp, 0);
     }
 
   HURD_CRITICAL_END;
diff --git a/sysdeps/mach/libc-lock.h b/sysdeps/mach/libc-lock.h
index 89e5715..548d067 100644
--- a/sysdeps/mach/libc-lock.h
+++ b/sysdeps/mach/libc-lock.h
@@ -20,15 +20,32 @@
 #define _LIBC_LOCK_H 1
 
 #ifdef _LIBC
-#include <cthreads.h>
-#define __libc_lock_t struct mutex
+
+#include <tls.h>
+#include <lowlevellock.h>
+
+/* The locking here is very inexpensive, even for inlining. */
+#define _IO_lock_inexpensive   1
+
+typedef unsigned int __libc_lock_t;
+typedef struct
+{
+  __libc_lock_t lock;
+  int cnt;
+  void *owner;
+} __libc_lock_recursive_t;
+
+typedef __libc_lock_recursive_t __rtld_lock_recursive_t;
+
+extern char __libc_lock_self0[0];
+#define __libc_lock_owner_self()   \
+  (__LIBC_NO_TLS() ? (void *)&__libc_lock_self0 : THREAD_SELF)
+
 #else
 typedef struct __libc_lock_opaque__ __libc_lock_t;
+typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
-/* Type for key of thread specific data.  */
-typedef cthread_key_t __libc_key_t;
-
 /* Define a lock variable NAME with storage class CLASS.  The lock must be
    initialized with __libc_lock_init before it can be used (or define it
    with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
@@ -40,27 +57,97 @@ typedef cthread_key_t __libc_key_t;
   CLASS __libc_lock_t NAME;
 
 /* Define an initialized lock variable NAME with storage class CLASS.  */
+#define _LIBC_LOCK_INITIALIZER LLL_INITIALIZER
 #define __libc_lock_define_initialized(CLASS,NAME) \
-  CLASS __libc_lock_t NAME = MUTEX_INITIALIZER;
+  CLASS __libc_lock_t NAME = LLL_INITIALIZER;
 
 /* Initialize the named lock variable, leaving it in a consistent, unlocked
    state.  */
-#define __libc_lock_init(NAME) __mutex_init (&(NAME))
+#define __libc_lock_init(NAME) (NAME) = LLL_INITIALIZER
 
 /* Finalize the named lock variable, which must be locked.  It cannot be
    used again until __libc_lock_init is called again on it.  This must be
    called on a lock variable before the containing storage is reused.  */
-#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
+#define __libc_lock_fini             __libc_lock_unlock
+#define __libc_lock_fini_recursive   __libc_lock_unlock_recursive
+#define __rtld_lock_fini_recursive   __rtld_lock_unlock_recursive
 
 /* Lock the named lock variable.  */
-#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
+#define __libc_lock_lock(NAME)   \
+  ({ lll_lock (&(NAME), 0); 0; })
 
 /* Lock the named lock variable.  */
-#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
+#define __libc_lock_trylock(NAME) lll_trylock (&(NAME))
 
 /* Unlock the named lock variable.  */
-#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
-
+#define __libc_lock_unlock(NAME)   \
+  ({ lll_unlock (&(NAME), 0); 0; })
+
+#define __libc_lock_define_recursive(CLASS,NAME) \
+  CLASS __libc_lock_recursive_t NAME;
+
+#define _LIBC_LOCK_RECURSIVE_INITIALIZER { LLL_INITIALIZER, 0, 0 }
+
+#define __libc_lock_define_initialized_recursive(CLASS,NAME) \
+  CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
+
+#define __rtld_lock_define_recursive(CLASS,NAME) \
+  __libc_lock_define_recursive (CLASS, NAME)
+#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
+  _LIBC_LOCK_RECURSIVE_INITIALIZER
+#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
+  __libc_lock_define_initialized_recursive (CLASS, NAME)
+
+#define __libc_lock_init_recursive(NAME)   \
+  ({   \
+     (NAME) = (__libc_lock_recursive_t)_LIBC_LOCK_RECURSIVE_INITIALIZER;   \
+     0;   \
+  })
+
+#define __libc_lock_trylock_recursive(NAME)   \
+  ({   \
+     __libc_lock_recursive_t *const __lock = &(NAME);   \
+     void *__self = __libc_lock_owner_self ();   \
+     int __r = 0;   \
+     if (__self == __lock->owner)   \
+       ++__lock->cnt;   \
+     else if ((__r = lll_trylock (&__lock->lock)) == 0)   \
+       __lock->owner = __self, __lock->cnt = 1;   \
+     __r;   \
+   })
+
+#define __libc_lock_lock_recursive(NAME)   \
+  ({   \
+     __libc_lock_recursive_t *const __lock = &(NAME);   \
+     void *__self = __libc_lock_owner_self ();   \
+     if (__self != __lock->owner)   \
+       {   \
+         lll_lock (&__lock->lock, 0);   \
+         __lock->owner = __self;   \
+       }   \
+     ++__lock->cnt;   \
+     (void)0;   \
+   })
+
+#define __libc_lock_unlock_recursive(NAME)   \
+  ({   \
+     __libc_lock_recursive_t *const __lock = &(NAME);   \
+     if (--__lock->cnt == 0)   \
+       {   \
+         __lock->owner = 0;   \
+         lll_unlock (&__lock->lock, 0);   \
+       }   \
+   })
+
+
+#define __rtld_lock_initialize(NAME) \
+  (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
+#define __rtld_lock_trylock_recursive(NAME) \
+  __libc_lock_trylock_recursive (NAME)
+#define __rtld_lock_lock_recursive(NAME) \
+  __libc_lock_lock_recursive(NAME)
+#define __rtld_lock_unlock_recursive(NAME) \
+  __libc_lock_unlock_recursive (NAME)
 
 /* XXX for now */
 #define __libc_rwlock_define		__libc_lock_define
@@ -73,25 +160,38 @@ typedef cthread_key_t __libc_key_t;
 #define __libc_rwlock_trywrlock		__libc_lock_trylock
 #define __libc_rwlock_unlock		__libc_lock_unlock
 
+struct __libc_cleanup_frame
+{
+  void (*__fct) (void *);
+  void *__argp;
+  int __doit;
+};
+
+__extern_inline void
+__libc_cleanup_fct (struct __libc_cleanup_frame *framep)
+{
+  if (framep->__doit)
+    framep->__fct (framep->__argp);
+}
 
 /* Start a critical region with a cleanup function */
-#define __libc_cleanup_region_start(DOIT, FCT, ARG)			    \
-{									    \
-  typeof (***(FCT)) *__save_FCT = (DOIT) ? (FCT) : 0;			    \
-  typeof (ARG) __save_ARG = ARG;					    \
-  /* close brace is in __libc_cleanup_region_end below. */
-
-/* End a critical region started with __libc_cleanup_region_start. */
-#define __libc_cleanup_region_end(DOIT)					    \
-  if ((DOIT) && __save_FCT != 0)					    \
-    (*__save_FCT)(__save_ARG);						    \
-}
+#define __libc_cleanup_region_start(DOIT, FCT, ARG)   \
+  do   \
+    {   \
+      struct __libc_cleanup_frame __cleanup   \
+        __attribute__ ((__cleanup__ (__libc_cleanup_fct))) =   \
+        { .__fct = (FCT), .__argp = (ARG), .__doit = (DOIT) };
+
+/* This one closes the brace above. */
+#define __libc_cleanup_region_end(DOIT)   \
+      __cleanup.__doit = (DOIT);   \
+    }   \
+  while (0)
 
-/* Sometimes we have to exit the block in the middle.  */
-#define __libc_cleanup_end(DOIT)					    \
-  if ((DOIT) && __save_FCT != 0)					    \
-    (*__save_FCT)(__save_ARG);						    \
+#define __libc_cleanup_end(DOIT)   __cleanup.__doit = (DOIT);
 
+#define __libc_cleanup_push(fct, arg) __libc_cleanup_region_start (1, fct, arg)
+#define __libc_cleanup_pop(execute) __libc_cleanup_region_end (execute)
 
 /* Use mutexes as once control variables. */
 
@@ -102,8 +202,7 @@ struct __libc_once
   };
 
 #define __libc_once_define(CLASS,NAME) \
-  CLASS struct __libc_once NAME = { MUTEX_INITIALIZER, 0 }
-
+  CLASS struct __libc_once NAME = { _LIBC_LOCK_INITIALIZER, 0 }
 
 /* Call handler iff the first call.  */
 #define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
@@ -121,25 +220,11 @@ struct __libc_once
 #ifdef _LIBC
 /* We need portable names for some functions.  E.g., when they are
    used as argument to __libc_cleanup_region_start.  */
-#define __libc_mutex_unlock __mutex_unlock
-#endif
+#define __libc_mutex_unlock __libc_lock_unlock
 
-#define __libc_key_create(KEY,DEST) __cthread_keycreate (KEY)
-#define __libc_setspecific(KEY,VAL) __cthread_setspecific (KEY, VAL)
-void *__libc_getspecific (__libc_key_t key);
-
-/* XXX until cthreads supports recursive locks */
-#define __libc_lock_define_initialized_recursive __libc_lock_define_initialized
-#define __libc_lock_init_recursive __libc_lock_init
-#define __libc_lock_fini_recursive __libc_lock_fini
-#define __libc_lock_trylock_recursive __libc_lock_trylock
-#define __libc_lock_unlock_recursive __libc_lock_unlock
-#define __libc_lock_lock_recursive __libc_lock_lock
-
-#define __rtld_lock_define_initialized_recursive __libc_lock_define_initialized
-#define __rtld_lock_fini_recursive __libc_lock_fini
-#define __rtld_lock_trylock_recursive __libc_lock_trylock
-#define __rtld_lock_unlock_recursive __libc_lock_unlock
-#define __rtld_lock_lock_recursive __libc_lock_lock
+/* Hide the definitions which are only supposed to be used inside libc in
+   a separate file.  This file is not present in the installation!  */
+# include <libc-lockP.h>
+#endif
 
 #endif	/* libc-lock.h */

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=fcd7086300f4b919eec54ee939058a58183b4381

commit fcd7086300f4b919eec54ee939058a58183b4381
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 25 01:49:49 2018 +0100

    Revert signal disposition, not in glibc's cvs yet

diff --git a/htl/sysdeps/mach/hurd/pt-sigstate.c b/htl/sysdeps/mach/hurd/pt-sigstate.c
index 74fd72a..bae6ae7 100644
--- a/htl/sysdeps/mach/hurd/pt-sigstate.c
+++ b/htl/sysdeps/mach/hurd/pt-sigstate.c
@@ -21,7 +21,6 @@
 #include <assert.h>
 #include <signal.h>
 #include <hurd/signal.h>
-#include <hurd/msg.h>
 
 #include <pt-internal.h>
 
@@ -32,12 +31,11 @@ __pthread_sigstate (struct __pthread *thread, int how,
 {
   error_t err = 0;
   struct hurd_sigstate *ss;
-  sigset_t pending;
 
   ss = _hurd_thread_sigstate (thread->kernel_thread);
   assert (ss);
 
-  _hurd_sigstate_lock (ss);
+  __spin_lock (&ss->lock);
 
   if (oset)
     *oset = ss->blocked;
@@ -68,13 +66,7 @@ __pthread_sigstate (struct __pthread *thread, int how,
   if (! err && clear_pending)
     __sigemptyset (&ss->pending);
 
-  pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
-  _hurd_sigstate_unlock (ss);
-
-  if (! err && pending)
-    /* Send a message to the signal thread so it
-       will wake up and check for pending signals.  */
-    __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
+  __spin_unlock (&ss->lock);
 
   return err;
 }

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=d19e12d12646fa3377eab82ff74cbc4bd23a5b7b

commit d19e12d12646fa3377eab82ff74cbc4bd23a5b7b
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 25 01:48:24 2018 +0100

    plug htl subdir to the build, hackish for now

diff --git a/sysdeps/htl/Makeconfig b/sysdeps/htl/Makeconfig
new file mode 100644
index 0000000..c4c5ba2
--- /dev/null
+++ b/sysdeps/htl/Makeconfig
@@ -0,0 +1 @@
+include $(..)htl/Makeconfig
diff --git a/sysdeps/mach/hurd/Implies b/sysdeps/mach/hurd/Implies
index d2d5234..666c3e0 100644
--- a/sysdeps/mach/hurd/Implies
+++ b/sysdeps/mach/hurd/Implies
@@ -3,3 +3,9 @@
 gnu
 # The Hurd provides a rough superset of the functionality of 4.4 BSD.
 unix/bsd
+htl
+../htl/sysdeps/mach/hurd
+../htl/sysdeps/hurd
+../htl/sysdeps/mach
+../htl/sysdeps/posix
+../htl/sysdeps/generic
diff --git a/sysdeps/mach/hurd/Subdirs b/sysdeps/mach/hurd/Subdirs
index 7a77575..d0fa0e8 100644
--- a/sysdeps/mach/hurd/Subdirs
+++ b/sysdeps/mach/hurd/Subdirs
@@ -7,3 +7,5 @@
 # way with more somewhat expensive `make' invocations.
 
 first hurd
+
+htl
diff --git a/sysdeps/mach/hurd/i386/Implies b/sysdeps/mach/hurd/i386/Implies
index 94db5e9..50ecde8 100644
--- a/sysdeps/mach/hurd/i386/Implies
+++ b/sysdeps/mach/hurd/i386/Implies
@@ -1 +1,3 @@
 mach/hurd/x86
+../htl/sysdeps/mach/hurd/i386
+../htl/sysdeps/i386

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=4c2d0099b85535eacb257d54a5265eb62f680cf8

commit 4c2d0099b85535eacb257d54a5265eb62f680cf8
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 25 01:47:51 2018 +0100

    Until posix thread signal distribution is commited

diff --git a/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c b/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c
index d5e28d2..fce56c5 100644
--- a/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c
+++ b/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c
@@ -24,5 +24,5 @@
 void
 __pthread_sigstate_destroy (struct __pthread *thread)
 {
-  _hurd_sigstate_delete (thread->kernel_thread);
+  //_hurd_sigstate_delete (thread->kernel_thread);
 }
diff --git a/htl/sysdeps/mach/hurd/pt-sigstate-init.c b/htl/sysdeps/mach/hurd/pt-sigstate-init.c
index 4848f2e..660d5a0 100644
--- a/htl/sysdeps/mach/hurd/pt-sigstate-init.c
+++ b/htl/sysdeps/mach/hurd/pt-sigstate-init.c
@@ -36,7 +36,8 @@ __pthread_sigstate_init (struct __pthread *thread)
   if (do_init_global)
     {
       struct hurd_sigstate *ss = _hurd_thread_sigstate (thread->kernel_thread);
-      _hurd_sigstate_set_global_rcv (ss);
+      (void) ss;
+      //_hurd_sigstate_set_global_rcv (ss);
     }
   else if (__pthread_num_threads >= 2)
     do_init_global = 1;

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=4ac5b663b70ce2042726ce40681d0c64976019f2

commit 4ac5b663b70ce2042726ce40681d0c64976019f2
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 25 01:47:29 2018 +0100

    Hack htl build failures

diff --git a/htl/pthread/pt-initialize.c b/htl/pthread/pt-initialize.c
index bb3e1fc..73d0c40 100644
--- a/htl/pthread/pt-initialize.c
+++ b/htl/pthread/pt-initialize.c
@@ -77,6 +77,11 @@ static const struct pthread_functions pthread_functions =
   };
 #endif /* IS_IN (libpthread) */
 
+static void none(void)
+{
+}
+text_set_element (__pthread_init, none);
+
 /* Initialize the pthreads library.  */
 void
 ___pthread_init (void)
diff --git a/resolv/gai_notify.c b/resolv/gai_notify.c
index dad2546..93924d2 100644
--- a/resolv/gai_notify.c
+++ b/resolv/gai_notify.c
@@ -31,7 +31,9 @@ struct notify_func
 static void *
 notify_func_wrapper (void *arg)
 {
+#ifdef gai_start_notify_thread
   gai_start_notify_thread ();
+#endif
   struct notify_func *const n = arg;
   void (*func) (sigval_t) = n->func;
   sigval_t value = n->value;

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=8cfb30ea590cfdb123350f2634b9820a967b7308

commit 8cfb30ea590cfdb123350f2634b9820a967b7308
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 25 01:44:57 2018 +0100

    Import Hurd libpthread git snapshot 55c35d62a3a6

diff --git a/htl/ChangeLog b/htl/ChangeLog
new file mode 100644
index 0000000..e991eac
--- /dev/null
+++ b/htl/ChangeLog
@@ -0,0 +1,6 @@
+51839d398b0f9885a17ab5c0768b8dec4dd9eb79 is the last commit imported from CVS.
+All commits after that one have valid author and committer information.
+
+Use this to examine the change log for earlier changes:
+
+    $ git show 51839d398b0f9885a17ab5c0768b8dec4dd9eb79:ChangeLog
diff --git a/htl/Makeconfig b/htl/Makeconfig
new file mode 100644
index 0000000..044c4e6
--- /dev/null
+++ b/htl/Makeconfig
@@ -0,0 +1,13 @@
+# Makeconfig fragment for Hurd libpthread add-on.
+# This gets included at the end of the main glibc Makeconfig.
+
+have-thread-library = yes
+
+shared-thread-library = $(common-objpfx)htl/libpthread_nonshared.a \
+			$(common-objpfx)htl/libpthread.so
+static-thread-library = $(common-objpfx)htl/libpthread.a
+bounded-thread-library = $(static-thread-library)
+
+rpath-dirs += htl
+
++includes += -I$(..)htl/include
diff --git a/htl/Makefile b/htl/Makefile
new file mode 100644
index 0000000..758edd3
--- /dev/null
+++ b/htl/Makefile
@@ -0,0 +1,358 @@
+#
+#   Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2004, 2005, 2006, 2007,
+#     2008, 2011 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or
+#   modify it under the terms of the GNU General Public License as
+#   published by the Free Software Foundation; either version 2, or (at
+#   your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; if not, write to the Free Software
+#   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ifeq ($(..),)
+# non-glibc build
+IN_GLIBC = no
+else
+# glibc build
+IN_GLIBC = yes
+# set elf=yes, to retain compatibility with glibc < 2.16
+ifeq ($(elf),)
+elf = yes
+endif
+endif
+
+ifeq ($(IN_GLIBC),no)
+dir := libpthread
+makemode := library
+else
+subdir := htl
+
+srcdir = .
+endif
+
+MICROKERNEL := mach
+SYSDEPS := lockfile
+
+LCLHDRS :=
+
+libpthread-routines := pt-attr pt-attr-destroy pt-attr-getdetachstate	    \
+	pt-attr-getguardsize pt-attr-getinheritsched			    \
+	pt-attr-getschedparam pt-attr-getschedpolicy pt-attr-getscope	    \
+	pt-attr-getstack pt-attr-getstackaddr pt-attr-getstacksize	    \
+	pt-attr-init pt-attr-setdetachstate pt-attr-setguardsize	    \
+	pt-attr-setinheritsched pt-attr-setschedparam			    \
+	pt-attr-setschedpolicy pt-attr-setscope pt-attr-setstack	    \
+	pt-attr-setstackaddr pt-attr-setstacksize			    \
+									    \
+	pt-barrier-destroy pt-barrier-init pt-barrier-wait		    \
+	pt-barrier pt-barrierattr-destroy pt-barrierattr-init		    \
+	pt-barrierattr-getpshared pt-barrierattr-setpshared		    \
+									    \
+	pt-destroy-specific pt-init-specific				    \
+	pt-key-create pt-key-delete					    \
+	pt-getspecific pt-setspecific					    \
+									    \
+	pt-once								    \
+									    \
+	pt-alloc							    \
+	pt-create							    \
+	pt-getattr							    \
+	pt-equal							    \
+	pt-dealloc							    \
+	pt-detach							    \
+	pt-exit								    \
+	pt-initialize							    \
+	pt-join								    \
+	pt-self								    \
+	pt-sigmask							    \
+	pt-spin-inlines							    \
+	pt-cleanup							    \
+	pt-setcancelstate						    \
+	pt-setcanceltype						    \
+	pt-testcancel							    \
+	pt-cancel							    \
+									    \
+	pt-mutexattr							    \
+	pt-mutexattr-destroy pt-mutexattr-init				    \
+	pt-mutexattr-getprioceiling pt-mutexattr-getprotocol		    \
+	pt-mutexattr-getpshared pt-mutexattr-gettype			    \
+	pt-mutexattr-setprioceiling pt-mutexattr-setprotocol		    \
+	pt-mutexattr-setpshared pt-mutexattr-settype			    \
+	pt-mutexattr-getrobust pt-mutexattr-setrobust			    \
+									    \
+	pt-mutex-init pt-mutex-destroy					    \
+	pt-mutex-lock pt-mutex-trylock pt-mutex-timedlock		    \
+	pt-mutex-unlock							    \
+	pt-mutex-transfer-np						    \
+	pt-mutex-getprioceiling pt-mutex-setprioceiling			    \
+	pt-mutex-consistent 						    \
+									    \
+	pt-rwlock-attr							    \
+	pt-rwlockattr-init pt-rwlockattr-destroy			    \
+	pt-rwlockattr-getpshared pt-rwlockattr-setpshared		    \
+									    \
+	pt-rwlock-init pt-rwlock-destroy				    \
+	pt-rwlock-rdlock pt-rwlock-tryrdlock				    \
+	pt-rwlock-trywrlock pt-rwlock-wrlock				    \
+	pt-rwlock-timedrdlock pt-rwlock-timedwrlock			    \
+	pt-rwlock-unlock						    \
+									    \
+	pt-cond								    \
+	pt-condattr-init pt-condattr-destroy				    \
+	pt-condattr-getclock pt-condattr-getpshared			    \
+	pt-condattr-setclock pt-condattr-setpshared			    \
+									    \
+	pt-cond-destroy pt-cond-init					    \
+	pt-cond-brdcast							    \
+	pt-cond-signal							    \
+	pt-cond-wait							    \
+	pt-cond-timedwait						    \
+	pt-hurd-cond-wait						    \
+	pt-hurd-cond-timedwait						    \
+									    \
+	pt-stack-alloc							    \
+	pt-thread-alloc							    \
+	pt-thread-start							    \
+	pt-thread-terminate						    \
+	pt-startup							    \
+									    \
+	pt-getconcurrency pt-setconcurrency				    \
+									    \
+	pt-block							    \
+	pt-timedblock							    \
+	pt-wakeup							    \
+	pt-docancel							    \
+	pt-sysdep							    \
+	pt-setup							    \
+	pt-machdep							    \
+	pt-spin								    \
+									    \
+	pt-sigstate-init						    \
+	pt-sigstate-destroy						    \
+	pt-sigstate							    \
+									    \
+	pt-atfork							    \
+	old_pt-atfork							    \
+	pt-kill								    \
+	pt-getcpuclockid						    \
+									    \
+	pt-getschedparam pt-setschedparam pt-setschedprio		    \
+	pt-yield							    \
+									    \
+	sem-close sem-destroy sem-getvalue sem-init sem-open		    \
+	sem-post sem-timedwait sem-trywait sem-unlink			    \
+	sem-wait							    \
+									    \
+	shm-directory							    \
+									    \
+	cthreads-compat							    \
+	$(SYSDEPS)
+
+libpthread-static-only-routines = pt-atfork
+
+ifeq ($(IN_GLIBC),no)
+SRCS := $(addsuffix .c,$(libpthread-routines))
+OBJS = $(addsuffix .o,$(basename $(notdir $(SRCS))))
+
+OTHERTAGS =
+
+libname = libpthread
+endif
+
+headers :=				\
+              pthread.h				\
+              pthread/pthread.h			\
+              pthread/pthreadtypes.h		\
+	      semaphore.h			\
+						\
+              bits/pthread.h			\
+              bits/pthread-np.h			\
+              bits/pthreadtypes.h		\
+              bits/pthreadtypes-arch.h		\
+              bits/thread-shared-types.h	\
+              bits/mutex.h			\
+              bits/condition.h			\
+              bits/condition-attr.h		\
+              bits/spin-lock.h			\
+              bits/spin-lock-inline.h		\
+              bits/cancelation.h		\
+              bits/thread-attr.h		\
+              bits/barrier-attr.h		\
+              bits/barrier.h			\
+              bits/thread-specific.h		\
+              bits/once.h			\
+              bits/mutex-attr.h			\
+              bits/rwlock.h			\
+              bits/rwlock-attr.h		\
+	      bits/semaphore.h
+
+ifeq ($(IN_GLIBC),yes)
+distribute :=
+
+routines := forward libc_pthread_init alloca_cutoff
+shared-only-routines = forward
+
+vpath %.c
+
+extra-libs := libpthread
+extra-libs-others := $(extra-libs)
+install-lib := libpthread.so
+
+include ../Makeconfig
+endif
+
+SYSDEP_PATH = $(srcdir)/sysdeps/$(MICROKERNEL)/hurd/i386	\
+	 $(srcdir)/sysdeps/$(MICROKERNEL)/i386			\
+	 $(srcdir)/sysdeps/i386					\
+	 $(srcdir)/sysdeps/$(MICROKERNEL)/hurd			\
+	 $(srcdir)/sysdeps/$(MICROKERNEL)			\
+	 $(srcdir)/sysdeps/hurd					\
+	 $(srcdir)/sysdeps/generic				\
+	 $(srcdir)/sysdeps/posix				\
+	 $(srcdir)/pthread					\
+	 $(srcdir)/include
+
+VPATH += $(SYSDEP_PATH)
+
+ifeq ($(IN_GLIBC),no)
+installhdrs :=
+installhdrsubdir := .
+
+include ../Makeconf
+endif
+
+CPPFLAGS += \
+	  -DENABLE_TLS					\
+	  $(addprefix -I, $(SYSDEP_PATH))
+
+ifeq ($(IN_GLIBC),no)
+CPPFLAGS += \
+	  -imacros $(srcdir)/include/libc-symbols.h	\
+	  -imacros $(srcdir)/not-in-libc.h
+endif
+
+ifeq ($(IN_GLIBC),yes)
+CFLAGS-lockfile.c = -D_IO_MTSAFE_IO
+
+all: # Make this the default target; it will be defined in Rules.
+endif
+
+ifeq ($(IN_GLIBC),no)
+inst_libdir = $(libdir)
+endif
+
+ifeq ($(IN_GLIBC),no)
+install: install-headers
+install-headers: $(addprefix $(includedir)/, $(headers))
+
+install: $(inst_libdir)/libpthread2.a $(inst_libdir)/libpthread2_pic.a
+else
+subdir_install: $(inst_libdir)/libpthread2.a
+endif
+
+# XXX: If $(inst_libdir)/libpthread2.a is installed and
+# $(inst_libdir)/libpthread is not, we can have some issues.
+.PHONY: $(inst_libdir)/libpthread.a $(inst_libdir)/libpthread_pic.a
+
+# XXX: These rules are a hack.  But it is better than messing with
+# ../Makeconf at the moment.  Note that the linker scripts
+# $(srcdir)/libpthread.a and $(srcdir)/libpthread_pic.a get overwritten
+# when building in $(srcdir) and not a seperate build directory.
+$(inst_libdir)/libpthread2.a: $(inst_libdir)/libpthread.a
+	mv $< $@
+	$(INSTALL_DATA) $(srcdir)/libpthread.a $<
+
+$(inst_libdir)/libpthread2_pic.a: $(inst_libdir)/libpthread_pic.a
+	mv $< $@
+	$(INSTALL_DATA) $(srcdir)/libpthread_pic.a $<
+
+ifeq ($(IN_GLIBC),yes)
+libc-link.so = $(common-objpfx)libc.so
+
+extra-B-pthread.so = -B$(common-objpfx)htl/
+
+include ../Rules
+
+ifeq (yes,$(build-shared))
+# What we install as libpthread.so for programs to link against is in fact a
+# link script.  It contains references for the various libraries we need.
+# The libpthread.so object is not complete since some functions are only
+# defined in libpthread_nonshared.a.
+# We need to use absolute paths since otherwise local copies (if they exist)
+# of the files are taken by the linker.
+install: $(inst_libdir)/libpthread.so
+
+$(inst_libdir)/libpthread.so: $(common-objpfx)format.lds \
+			      $(objpfx)libpthread.so$(libpthread.so-version) \
+			      $(inst_libdir)/$(patsubst %,$(libtype.oS),\
+							$(libprefix)pthread) \
+			      $(+force)
+	(echo '/* GNU ld script';\
+	 echo '   Use the shared library, but some functions are only in';\
+	 echo '   the static library, so try that secondarily.  */';\
+	 cat $<; \
+	 echo 'GROUP ( $(slibdir)/libpthread.so$(libpthread.so-version)' \
+	      '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)pthread)'\
+	      ')' \
+	) > $@.new
+	mv -f $@.new $@
+
+$(addprefix $(objpfx), \
+  $(filter-out $(tests-static) $(xtests-static) $(tests-reverse) \
+    $(tests-nolibpthread), \
+    $(tests) $(xtests) $(test-srcs))): $(objpfx)libpthread.so \
+				       $(objpfx)libpthread_nonshared.a
+endif
+
+generated += libpthread_nonshared.a
+endif
+
+ifeq ($(IN_GLIBC),no)
+.PHONY: $(addprefix $(includedir)/, $(headers))
+
+$(addprefix $(includedir)/, $(headers)):
+	@set -e;							\
+	t="$@";								\
+	t=$${t#$(includedir)/};						\
+	header_ok=0;							\
+	for dir in $(SYSDEP_PATH);					\
+	do								\
+	  if test -e "$$dir/$$t";					\
+	  then								\
+	    tdir=`dirname "$@"`;					\
+	    if test ! -e $$tdir;					\
+	    then							\
+	      mkdir $$tdir;						\
+	    fi;								\
+	    echo $(INSTALL_DATA) "$$dir/$$t" "$@";			\
+	    $(INSTALL_DATA) "$$dir/$$t" "$@";				\
+	    header_ok=1;						\
+	    break;							\
+	  fi;								\
+	done;								\
+	if test "$${header_ok}" -ne 1;					\
+	then								\
+	  echo;								\
+	  echo '*** 'The header file \`$@\' is required, but not	\
+provided, by;								\
+	  echo '*** 'this configuration.  Please report this to the	\
+maintainer.;								\
+	  echo;								\
+	  false;							\
+	fi
+
+#  ifeq ($(VERSIONING),yes)
+#
+#  # Adding this dependency gets it included in the command line,
+#  # where ld will read it as a linker script.
+#  $(libname).so.$(hurd-version): $(srcdir)/$(libname).map
+#
+#  endif
+endif
diff --git a/htl/TODO b/htl/TODO
new file mode 100644
index 0000000..979c38c
--- /dev/null
+++ b/htl/TODO
@@ -0,0 +1,131 @@
+-*- Mode: outline -*-
+
+* Interfaces
+** All interfaces specified by IEEE Std 1003.1-2001 are present, however,
+   pthread_kill and pthread_sigmask are defined in <pthread.h> and not
+   <signal.h> as they should be.  Once we are compiled with glibc,
+   this should be eaiser.
+
+* Test cases.  Can never have enough.
+
+* Ports
+  Port to other kernels (e.g. Linux and FreeBSD) and test on other
+  platforms.
+
+* Implementation details
+** pthread_atfork
+   This cannot be implemented without either changing glibc to export
+   some hooks (c.f. libc/sysdeps/mach/hurd/fork.c) or by providing a
+   custom fork implementation that wraps the origial using dlopen et
+   al.
+
+** Scheduling and priorities
+
+   We do not support scheduling right now in any way what so ever.
+
+   This affects:
+     pthread_attr_getinheritsched
+     pthread_attr_setinheritsched
+     pthread_attr_getschedparam
+     pthread_attr_setschedparam
+     pthread_attr_getschedpolicy
+     pthread_attr_setschedpolicy
+     pthread_attr_getscope
+     pthread_attr_setscope
+
+     pthread_mutexattr_getprioceiling
+     pthread_mutexattr_setprioceiling
+     pthread_mutexattr_getprotocol
+     pthread_mutexattr_setprotocol
+     pthread_mutex_getprioceiling
+     pthread_mutex_setprioceiling
+
+     pthread_setschedprio
+     pthread_getschedparam
+     pthread_setschedparam
+
+** Cancelation
+*** Cancelation points
+    The only cancelation points are pthread_join, pthread_cond_wait,
+    pthead_cond_timedwait and pthread_testcancel.  Need to explore if
+    the hurd_sigstate->cancel_hook (c.f. <hurd/signal.h>) provides the
+    desired semantics.  If not, must either wrap the some functions
+    using dlsym or wait until integration with glibc.
+*** Async cancelation
+    We inject a new IP into the cancelled (running) thread and then
+    run the cancelation handlers
+    (c.f. sysdeps/mach/hurd/pt-docancel.c).  The handlers need to have
+    access to the stack as they may use local variables.  I think that
+    this method may leave the frame pointer in a corrupted state if
+    the thread was in, for instance, the middle of a function call.
+    The robustness needs to be confirmed.
+
+** Process Shared Attribute
+
+   Currently, there is no real support for the process shared
+   attribute.  spinlocks work because we just use a test and set loop,
+   however, barriers, conditions mutexes and rwlocks, however, signal
+   wakeups via ports of which the names are process local.
+
+   We could have some process local data that is hashed to via the
+   address of the data structure.  Then the first thread that blocks
+   per process would spin on the shared memory area and all others
+   would then block as normal.  When the resource became available,
+   the first thread would signal the other local threads as necessary.
+   Alternatively, there could be some server, however, this opens a
+   new question: what can we use as an authentication agent.
+
+** Locking algorithm
+
+   When a thread blocks, it puts itself on a queue and then waits for
+   a message on a thread local port.  The thread which eventually does
+   the wakeup sends a message to the waiter thereby waking it up.  If
+   the wakeup is a broadcast wakeup (e.g. pthread_cond_broadcast,
+   pthread_barrier_wait and pthread_rdlock_unlock), the thread must
+   send O(N) messages where N is the number of waiting threads.  If
+   all the threads instead received on a lock local (rather than
+   thread local) port then the thread which eventually does the wake
+   need just do one operation, mach_port_destroy and all of the
+   waiting threads would wakeup and get MACH_RCV_PORT_DIED back from
+   mach_msg.  Note that the trade off is that the port must be
+   recreated.  This needs to be benchmarked.
+
+   A possible problem with this is scheduling priorities.  There may
+   be a preference for certain threads to wakeup before others
+   (especially if we are not doing a broadcast, for instance,
+   pthread_mutex_unlock and pthread_cond_signal).  If we take this
+   approach, the kernel chooses which threads are awakened.  If we
+   find that the kernel makes the wrong choices, we can still overcome
+   this by merging the two algorithms: have a list of ports sorted in
+   priority order and the waker does a mach_port_destroy on each as
+   appropriate.
+
+** Barriers
+
+   Barriers can be very slow and the contention can be very high.  The
+   above algorithm is very appealing, however, this may be augmented
+   with an initial number of spins and yields.  It is expected that
+   all of the threads reach the barrier within close succession, thus
+   queuing a message may be more expensive.  This needs to be
+   benchmarked.
+
+** Clocks
+*** pthread_condattr_setclock allows a process to specify a clock for
+    use with pthread_cond_timedwaits.  What is the correct default for
+    this, right now, we use CLOCK_REALTIME, however, we are really
+    using the system clock which, if I understand correctly, is
+    completely different.
+*** Could we even use other clocks? mach_msg uses a relative time against
+    the system clock.
+*** pthread_getcpuclockid just returns CLOCK_THREAD_CPUTIME_ID if defined.
+    Is this the correct behavior?
+
+** Timed Blocking
+*** pthread_cond_timedwait, pthead_mutex_timedlock, pthread_rwlock_timedrdlock
+    and pthread_rwlock_timedwrlock all take absolute times.  We need
+    to convert them to relative times for mach_msg.  Is there a way
+    around this?  How will clock skew affect us?
+
+** weak aliases
+   Use them consistently and correctly and start by reading
+   http://sources.redhat.com/ml/libc-alpha/2002-08/msg00278.html.
diff --git a/htl/Versions b/htl/Versions
new file mode 100644
index 0000000..79bb564
--- /dev/null
+++ b/htl/Versions
@@ -0,0 +1,155 @@
+libc {
+  GLIBC_2.21 {
+    pthread_attr_destroy; pthread_attr_getdetachstate;
+    pthread_attr_getinheritsched; pthread_attr_getschedparam;
+    pthread_attr_getschedpolicy; pthread_attr_getscope; pthread_attr_init;
+    pthread_attr_setdetachstate; pthread_attr_setinheritsched;
+    pthread_attr_setschedparam; pthread_attr_setschedpolicy;
+    pthread_attr_setscope;
+    pthread_condattr_destroy; pthread_condattr_init;
+    pthread_cond_broadcast; pthread_cond_destroy;
+    pthread_cond_init; pthread_cond_signal; pthread_cond_wait;
+    pthread_cond_timedwait;
+    pthread_equal;
+    pthread_exit; pthread_getschedparam; pthread_setschedparam;
+    pthread_mutex_destroy; pthread_mutex_init;
+    pthread_mutex_lock; pthread_mutex_trylock; pthread_mutex_unlock;
+    pthread_self; pthread_setcancelstate; pthread_setcanceltype;
+    __pthread_get_cleanup_stack;
+  }
+  GLIBC_2.22 {
+    __register_atfork;
+  }
+  GLIBC_PRIVATE {
+    __libc_alloca_cutoff;
+    __libc_pthread_init;
+  }
+}
+
+libpthread {
+  GLIBC_2.2.6 {
+    _IO_flockfile; _IO_ftrylockfile; _IO_funlockfile;
+  }
+  GLIBC_2.12 {
+    __pthread_errorcheck_mutexattr; __pthread_recursive_mutexattr;
+
+    __pthread_get_cleanup_stack;
+
+    __pthread_mutex_transfer_np;
+
+    _pthread_mutex_destroy; _pthread_mutex_init;
+    _pthread_mutex_lock; _pthread_mutex_trylock; _pthread_mutex_unlock;
+    _pthread_rwlock_destroy; _pthread_rwlock_init;
+
+    _cthread_init_routine;
+
+    cthread_detach;
+    cthread_fork;
+    cthread_keycreate;
+    cthread_getspecific;
+    cthread_setspecific;
+    __mutex_lock_solid;
+    __mutex_unlock_solid;
+    _cthreads_flockfile;
+    _cthreads_ftrylockfile;
+    _cthreads_funlockfile;
+
+    flockfile; ftrylockfile; funlockfile;
+
+    pthread_atfork;
+
+    pthread_attr_destroy; pthread_attr_getdetachstate;
+    pthread_attr_getguardsize; pthread_attr_getinheritsched;
+    pthread_attr_getschedparam; pthread_attr_getschedpolicy;
+    pthread_attr_getscope; pthread_attr_getstack; pthread_attr_getstackaddr;
+    pthread_attr_getstacksize; pthread_attr_init; pthread_attr_setdetachstate;
+    pthread_attr_setguardsize; pthread_attr_setinheritsched;
+    pthread_attr_setschedparam; pthread_attr_setschedpolicy;
+    pthread_attr_setscope; pthread_attr_setstack; pthread_attr_setstackaddr;
+    pthread_attr_setstacksize;
+
+    pthread_barrier_destroy; pthread_barrier_init; pthread_barrier_wait;
+    pthread_barrierattr_destroy; pthread_barrierattr_getpshared;
+    pthread_barrierattr_init; pthread_barrierattr_setpshared;
+
+    pthread_cancel;
+
+    pthread_cond_broadcast; pthread_cond_destroy; pthread_cond_init;
+    pthread_cond_signal; pthread_cond_timedwait; pthread_cond_wait;
+
+    pthread_condattr_destroy; pthread_condattr_getclock;
+    pthread_condattr_getpshared; pthread_condattr_init;
+    pthread_condattr_setclock; pthread_condattr_setpshared;
+
+    pthread_create; pthread_detach; pthread_equal; pthread_exit;
+
+    pthread_getattr_np;
+
+    pthread_getconcurrency; pthread_getcpuclockid;
+    pthread_getschedparam; pthread_getspecific;
+
+    pthread_join;
+
+    pthread_key_create; pthread_key_delete;
+    __pthread_key_create;
+
+    pthread_kill;
+    __pthread_kill;
+
+    pthread_mutex_destroy; pthread_mutex_getprioceiling;
+    pthread_mutex_init; pthread_mutex_lock; pthread_mutex_setprioceiling;
+    pthread_mutex_timedlock; pthread_mutex_transfer_np;
+    pthread_mutex_trylock; pthread_mutex_unlock;
+
+    pthread_mutexattr_destroy; pthread_mutexattr_getprioceiling;
+    pthread_mutexattr_getprotocol; pthread_mutexattr_getpshared;
+    pthread_mutexattr_gettype; pthread_mutexattr_init;
+    pthread_mutexattr_setprioceiling; pthread_mutexattr_setprotocol;
+    pthread_mutexattr_setpshared; pthread_mutexattr_settype;
+
+    pthread_once;
+
+    pthread_rwlock_destroy; pthread_rwlock_init; pthread_rwlock_rdlock;
+    pthread_rwlock_timedrdlock; pthread_rwlock_timedwrlock;
+    pthread_rwlock_tryrdlock; pthread_rwlock_trywrlock;
+    pthread_rwlock_unlock; pthread_rwlock_wrlock;
+
+    pthread_rwlockattr_destroy; pthread_rwlockattr_getpshared;
+    pthread_rwlockattr_init; pthread_rwlockattr_setpshared;
+
+    pthread_self;
+
+    pthread_setcancelstate; pthread_setcanceltype;
+    pthread_setconcurrency; pthread_setschedparam;
+    pthread_setschedprio; pthread_setspecific;
+
+    pthread_sigmask;
+    pthread_testcancel;
+    pthread_yield;
+
+    sem_close; sem_destroy; sem_getvalue; sem_init; sem_open; sem_post;
+    sem_timedwait; sem_trywait; sem_unlink; sem_wait;
+
+    pthread_spin_destroy; pthread_spin_init; pthread_spin_lock;
+    pthread_spin_trylock; pthread_spin_unlock;
+    __pthread_spin_destroy; __pthread_spin_init;
+    __pthread_spin_lock; __pthread_spin_trylock; __pthread_spin_unlock;
+    _pthread_spin_lock;
+  }
+  GLIBC_2.21 {
+    pthread_hurd_cond_wait_np;
+    pthread_hurd_cond_timedwait_np;
+  }
+  GLIBC_PRIVATE {
+    __shm_directory;
+    __pthread_threads;
+
+    __cthread_detach;
+    __cthread_fork;
+    __cthread_keycreate;
+    __cthread_getspecific;
+    __cthread_setspecific;
+    __pthread_getattr_np;
+    __pthread_attr_getstack;
+  }
+}
diff --git a/htl/configure b/htl/configure
new file mode 100644
index 0000000..5983490
--- /dev/null
+++ b/htl/configure
@@ -0,0 +1,2 @@
+libc_add_on_canonical=libpthread
+libc_add_on_subdirs=.
diff --git a/htl/configure.in b/htl/configure.in
new file mode 100644
index 0000000..4e140b1
--- /dev/null
+++ b/htl/configure.in
@@ -0,0 +1,4 @@
+GLIBC_PROVIDES
+
+libc_add_on_canonical=libpthread
+libc_add_on_subdirs=.
diff --git a/htl/forward.c b/htl/forward.c
new file mode 100644
index 0000000..ea25935
--- /dev/null
+++ b/htl/forward.c
@@ -0,0 +1,282 @@
+/* Copyright (C) 2002, 2003, 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <shlib-compat.h>
+#include <pthread-functions.h>
+#include <libc-lock.h>
+#include <fork.h>
+
+/* Pointers to the libc functions.  */
+struct pthread_functions __libc_pthread_functions attribute_hidden;
+int __libc_pthread_functions_init attribute_hidden;
+
+
+# define FORWARD2(name, rettype, decl, params, defaction) \
+rettype									      \
+name decl								      \
+{									      \
+  if (!__libc_pthread_functions_init)			      \
+    defaction;								      \
+									      \
+  return PTHFCT_CALL (ptr_##name, params);			      \
+}
+
+/* Same as FORWARD2, only without return.  */
+# define FORWARD_NORETURN(name, rettype, decl, params, defaction) \
+rettype									      \
+name decl								      \
+{									      \
+  if (!__libc_pthread_functions_init)			      \
+    defaction;								      \
+									      \
+  PTHFCT_CALL (ptr_##name, params);			      \
+}
+
+# define FORWARD(name, decl, params, defretval) \
+  FORWARD2 (name, int, decl, params, return defretval)
+
+FORWARD (pthread_attr_destroy, (pthread_attr_t *attr), (attr), 0)
+
+FORWARD (pthread_attr_init, (pthread_attr_t *attr), (attr), 0)
+
+FORWARD (pthread_attr_getdetachstate,
+	 (const pthread_attr_t *attr, int *detachstate), (attr, detachstate),
+	 0)
+FORWARD (pthread_attr_setdetachstate, (pthread_attr_t *attr, int detachstate),
+	 (attr, detachstate), 0)
+
+FORWARD (pthread_attr_getinheritsched,
+	 (const pthread_attr_t *attr, int *inherit), (attr, inherit), 0)
+FORWARD (pthread_attr_setinheritsched, (pthread_attr_t *attr, int inherit),
+	 (attr, inherit), 0)
+
+FORWARD (pthread_attr_getschedparam,
+	 (const pthread_attr_t *attr, struct sched_param *param),
+	 (attr, param), 0)
+FORWARD (pthread_attr_setschedparam,
+	 (pthread_attr_t *attr, const struct sched_param *param),
+	 (attr, param), 0)
+
+FORWARD (pthread_attr_getschedpolicy,
+	 (const pthread_attr_t *attr, int *policy), (attr, policy), 0)
+FORWARD (pthread_attr_setschedpolicy, (pthread_attr_t *attr, int policy),
+	 (attr, policy), 0)
+
+FORWARD (pthread_attr_getscope,
+	 (const pthread_attr_t *attr, int *scope), (attr, scope), 0)
+FORWARD (pthread_attr_setscope, (pthread_attr_t *attr, int scope),
+	 (attr, scope), 0)
+
+
+FORWARD (pthread_condattr_destroy, (pthread_condattr_t *attr), (attr), 0)
+FORWARD (pthread_condattr_init, (pthread_condattr_t *attr), (attr), 0)
+
+
+FORWARD (pthread_cond_broadcast, (pthread_cond_t *cond), (cond), 0)
+FORWARD (pthread_cond_destroy, (pthread_cond_t *cond), (cond), 0)
+FORWARD (pthread_cond_init,
+	 (pthread_cond_t *cond, const pthread_condattr_t *cond_attr),
+	 (cond, cond_attr), 0)
+FORWARD (pthread_cond_signal, (pthread_cond_t *cond), (cond), 0)
+FORWARD (pthread_cond_wait, (pthread_cond_t *cond, pthread_mutex_t *mutex),
+	 (cond, mutex), 0)
+FORWARD (pthread_cond_timedwait,
+	 (pthread_cond_t *cond, pthread_mutex_t *mutex,
+	  const struct timespec *abstime), (cond, mutex, abstime), 0)
+
+FORWARD (pthread_equal, (pthread_t thread1, pthread_t thread2),
+	 (thread1, thread2), 1)
+
+
+/* Use an alias to avoid warning, as pthread_exit is declared noreturn.  */
+FORWARD_NORETURN (__pthread_exit, void, (void *retval), (retval), exit (EXIT_SUCCESS))
+strong_alias (__pthread_exit, pthread_exit);
+
+
+FORWARD (pthread_getschedparam,
+	 (pthread_t target_thread, int *policy, struct sched_param *param),
+	 (target_thread, policy, param), 0)
+FORWARD (pthread_setschedparam,
+	 (pthread_t target_thread, int policy,
+	  const struct sched_param *param), (target_thread, policy, param), 0)
+
+
+FORWARD (pthread_mutex_destroy, (pthread_mutex_t *mutex), (mutex), 0)
+
+FORWARD (pthread_mutex_init,
+	 (pthread_mutex_t *mutex, const pthread_mutexattr_t *mutexattr),
+	 (mutex, mutexattr), 0)
+
+FORWARD (pthread_mutex_lock, (pthread_mutex_t *mutex), (mutex), 0)
+
+FORWARD (pthread_mutex_unlock, (pthread_mutex_t *mutex), (mutex), 0)
+
+
+FORWARD2 (pthread_self, pthread_t, (void), (), return 0)
+
+
+FORWARD (__pthread_setcancelstate, (int state, int *oldstate), (state, oldstate),
+	 0)
+strong_alias (__pthread_setcancelstate, pthread_setcancelstate);
+
+FORWARD (pthread_setcanceltype, (int type, int *oldtype), (type, oldtype), 0)
+
+struct __pthread_cancelation_handler *dummy_list;
+FORWARD2 (__pthread_get_cleanup_stack, struct __pthread_cancelation_handler **, (void), (), return &dummy_list);
+
+
+/* Fork interaction */
+
+struct atfork {
+  void (*prepare) (void);
+  void (*parent) (void);
+  void (*child) (void);
+  void *dso_handle;
+  struct atfork *prev;
+  struct atfork *next;
+};
+
+/* TODO: better locking */
+__libc_lock_define_initialized(static, atfork_lock);
+static struct atfork *fork_handlers, *fork_last_handler;
+
+static void
+atfork_pthread_prepare (void)
+{
+  struct atfork *handlers, *last_handler;
+
+  __libc_lock_lock (atfork_lock);
+  handlers = fork_handlers;
+  last_handler = fork_last_handler;
+  __libc_lock_unlock (atfork_lock);
+
+  if (!last_handler)
+    return;
+
+  while(1)
+    {
+      if (last_handler->prepare != NULL)
+	last_handler->prepare ();
+      if (last_handler == handlers)
+	break;
+      last_handler = last_handler->prev;
+    }
+}
+text_set_element (_hurd_atfork_prepare_hook, atfork_pthread_prepare);
+
+static void
+atfork_pthread_parent (void)
+{
+  struct atfork *handlers;
+
+  __libc_lock_lock (atfork_lock);
+  handlers = fork_handlers;
+  __libc_lock_unlock (atfork_lock);
+
+  while (handlers)
+    {
+      if (handlers->parent != NULL)
+	handlers->parent ();
+      handlers = handlers->next;
+    }
+}
+text_set_element (_hurd_atfork_parent_hook, atfork_pthread_parent);
+
+static void
+atfork_pthread_child (void)
+{
+  struct atfork *handlers;
+
+  __libc_lock_lock (atfork_lock);
+  handlers = fork_handlers;
+  __libc_lock_unlock (atfork_lock);
+
+  while (handlers)
+    {
+      if (handlers->child != NULL)
+	handlers->child ();
+      handlers = handlers->next;
+    }
+}
+text_set_element (_hurd_atfork_child_hook, atfork_pthread_child);
+
+int
+__register_atfork (
+    void (*prepare) (void),
+    void (*parent) (void),
+    void (*child) (void),
+    void *dso_handle)
+{
+  struct atfork *new = malloc (sizeof (*new));
+  if (!new)
+    return errno;
+
+  new->prepare = prepare;
+  new->parent = parent;
+  new->child = child;
+  new->dso_handle = dso_handle;
+  new->prev = NULL;
+
+  __libc_lock_lock (atfork_lock);
+  new->next = fork_handlers;
+  if (fork_handlers)
+    fork_handlers->prev = new;
+  fork_handlers = new;
+  if (!fork_last_handler)
+    fork_last_handler = new;
+  __libc_lock_unlock (atfork_lock);
+
+  return 0;
+}
+libc_hidden_def (__register_atfork)
+
+void
+__unregister_atfork (void *dso_handle)
+{
+  struct atfork **handlers, *prev = NULL, *next;
+  __libc_lock_lock (atfork_lock);
+  handlers = &fork_handlers;
+  while (*handlers)
+    {
+      if ((*handlers)->dso_handle == dso_handle)
+	{
+	  /* Drop this handler from the list.  */
+	  if (*handlers == fork_last_handler)
+	    {
+	      /* Was last, new last is prev, if any.  */
+	      fork_last_handler = prev;
+	    }
+
+	  next = (*handlers)->next;
+	  if (next)
+	    next->prev = prev;
+	  *handlers = next;
+	}
+      else
+	{
+	  /* Just proceed to next handler.  */
+	  prev = *handlers;
+	  handlers = &prev->next;
+	}
+    }
+  __libc_lock_unlock (atfork_lock);
+}
diff --git a/htl/libc_pthread_init.c b/htl/libc_pthread_init.c
new file mode 100644
index 0000000..eb6f41b
--- /dev/null
+++ b/htl/libc_pthread_init.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <string.h>
+#include <pthread-functions.h>
+
+void
+__libc_pthread_init (const struct pthread_functions *functions)
+{
+#ifdef SHARED
+  /* We copy the content of the variable pointed to by the FUNCTIONS
+     parameter to one in libc.so since this means access to the array
+     can be done with one memory access instead of two.  */
+  memcpy (&__libc_pthread_functions, functions,
+	  sizeof (__libc_pthread_functions));
+  __libc_pthread_functions_init = 1;
+#endif
+}
diff --git a/htl/libpthread.a b/htl/libpthread.a
new file mode 100644
index 0000000..e5bd2cc
--- /dev/null
+++ b/htl/libpthread.a
@@ -0,0 +1,22 @@
+/* pthread initializer is weak in glibc.  It must be included if glibc
+   is to start threading. */
+EXTERN(_cthread_init_routine)
+
+/* Weak references in glibc that must be filled if glibc is to be
+   thread safe.  */
+EXTERN(cthread_detach)
+EXTERN(cthread_fork)
+EXTERN(cthread_keycreate)
+EXTERN(cthread_getspecific)
+EXTERN(cthread_setspecific)
+EXTERN(__mutex_lock_solid)
+EXTERN(__mutex_unlock_solid)
+/* For libio stream locking.  */
+EXTERN(_cthreads_flockfile)
+EXTERN(_cthreads_funlockfile)
+EXTERN(_cthreads_ftrylockfile)
+/* To get the sigthread stack layout on fork */
+EXTERN(pthread_getattr_np)
+EXTERN(pthread_attr_getstack)
+
+GROUP(-lpthread2 -lrt)
diff --git a/htl/libpthread_pic.a b/htl/libpthread_pic.a
new file mode 100644
index 0000000..33346b4
--- /dev/null
+++ b/htl/libpthread_pic.a
@@ -0,0 +1,22 @@
+/* pthread initializer is weak in glibc.  It must be included if glibc
+   is to start threading. */
+EXTERN(_cthread_init_routine)
+
+/* Weak references in glibc that must be filled if glibc is to be
+   thread safe.  */
+EXTERN(cthread_detach)
+EXTERN(cthread_fork)
+EXTERN(cthread_keycreate)
+EXTERN(cthread_getspecific)
+EXTERN(cthread_setspecific)
+EXTERN(__mutex_lock_solid)
+EXTERN(__mutex_unlock_solid)
+/* For libio stream locking.  */
+EXTERN(_cthreads_flockfile)
+EXTERN(_cthreads_funlockfile)
+EXTERN(_cthreads_ftrylockfile)
+/* To get the sigthread stack layout on fork */
+EXTERN(pthread_getattr_np)
+EXTERN(pthread_attr_getstack)
+
+GROUP(-lpthread2_pic)
diff --git a/htl/lockfile.c b/htl/lockfile.c
new file mode 100644
index 0000000..040cbfb
--- /dev/null
+++ b/htl/lockfile.c
@@ -0,0 +1,65 @@
+/* lockfile - Handle locking and unlocking of streams.  Hurd cthreads version.
+   Copyright (C) 2000,01,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <cthreads.h>
+#include <pthread.h>		/* Must come before <stdio.h>! */
+#include <stdio.h>
+
+#ifdef _STDIO_USES_IOSTREAM
+
+void
+_cthreads_flockfile (_IO_FILE *fp)
+{
+  _IO_lock_lock (*fp->_lock);
+}
+
+void
+_cthreads_funlockfile (_IO_FILE *fp)
+{
+  _IO_lock_unlock (*fp->_lock);
+}
+
+int
+_cthreads_ftrylockfile (_IO_FILE *fp)
+{
+  return __libc_lock_trylock_recursive (*fp->_lock);
+}
+
+# undef 	_IO_flockfile
+# undef 	_IO_funlockfile
+# undef 	_IO_ftrylockfile
+# undef		flockfile
+# undef		funlockfile
+# undef		ftrylockfile
+
+void _IO_flockfile (_IO_FILE *)
+     __attribute__ ((alias ("_cthreads_flockfile")));
+void _IO_funlockfile (_IO_FILE *)
+     __attribute__ ((alias ("_cthreads_funlockfile")));
+int _IO_ftrylockfile (_IO_FILE *)
+     __attribute__ ((alias ("_cthreads_ftrylockfile")));
+
+void flockfile (_IO_FILE *)
+     __attribute__ ((alias ("_cthreads_flockfile")));
+void funlockfile (_IO_FILE *)
+     __attribute__ ((alias ("_cthreads_funlockfile")));
+int ftrylockfile (_IO_FILE *)
+     __attribute__ ((alias ("_cthreads_ftrylockfile")));
+
+#endif /* _STDIO_USES_IOSTREAM */
diff --git a/htl/not-in-libc.h b/htl/not-in-libc.h
new file mode 100644
index 0000000..7c5f0bc
--- /dev/null
+++ b/htl/not-in-libc.h
@@ -0,0 +1,12 @@
+#define __mach_port_insert_right mach_port_insert_right
+#define __mach_port_allocate	mach_port_allocate
+#define __mig_init		mig_init
+#define __thread_create		thread_create
+#define __thread_get_state	thread_get_state
+#define __thread_resume		thread_resume
+#define __thread_set_state	thread_set_state
+#define __thread_terminate	thread_terminate
+#define __thread_terminate_release	thread_terminate_release
+#define __vm_allocate		vm_allocate
+#define __vm_deallocate		vm_deallocate
+#define __sched_yield           sched_yield
diff --git a/htl/pthread/alloca_cutoff.c b/htl/pthread/alloca_cutoff.c
new file mode 100644
index 0000000..ec54d8f
--- /dev/null
+++ b/htl/pthread/alloca_cutoff.c
@@ -0,0 +1,27 @@
+/* Allocate a new thread structure.
+   Copyright (C) 2015-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <alloca.h>
+
+int
+__libc_alloca_cutoff (size_t size)
+{
+	return size <= 65536;
+}
+libc_hidden_def (__libc_alloca_cutoff)
diff --git a/htl/pthread/cthreads-compat.c b/htl/pthread/cthreads-compat.c
new file mode 100644
index 0000000..cd845ed
--- /dev/null
+++ b/htl/pthread/cthreads-compat.c
@@ -0,0 +1,102 @@
+/* Compatibility routines for cthreads.
+   Copyright (C) 2000, 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <pthread.h>
+
+#define	CTHREAD_KEY_INVALID (__cthread_key_t) -1
+
+void
+__cthread_detach (__cthread_t thread)
+{
+  int err;
+
+  err = pthread_detach ((pthread_t) thread);
+  assert_perror (err);
+}
+weak_alias (__cthread_detach, cthread_detach)
+
+__cthread_t
+__cthread_fork (__cthread_fn_t func, void *arg)
+{
+  pthread_t thread;
+  int err;
+
+  err = pthread_create (&thread, NULL, func, arg);
+  assert_perror (err);
+
+  return (__cthread_t) thread;
+}
+weak_alias (__cthread_fork, cthread_fork)
+
+int
+__cthread_keycreate (__cthread_key_t *key)
+{
+  error_t err;
+
+  err = pthread_key_create (key, 0);
+  if (err)
+    {
+      errno = err;
+      *key = CTHREAD_KEY_INVALID;
+      err = -1;
+    }
+
+  return err;
+}
+weak_alias (__cthread_keycreate, cthread_keycreate)
+
+int
+__cthread_getspecific (__cthread_key_t key, void **val)
+{
+  *val = pthread_getspecific (key);
+  return 0;
+}
+weak_alias (__cthread_getspecific, cthread_getspecific)
+
+int
+__cthread_setspecific (__cthread_key_t key, void *val)
+{
+  error_t err;
+
+  err = pthread_setspecific (key, (const void *) val);
+  if (err)
+    {
+      errno = err;
+      err = -1;
+    }
+
+  return err;
+}
+weak_alias (__cthread_setspecific, cthread_setspecific)
+
+void
+__mutex_lock_solid (void *lock)
+{
+  __pthread_mutex_lock (lock);
+}
+
+void
+__mutex_unlock_solid (void *lock)
+{
+  if (__pthread_spin_trylock (lock) != 0)
+    /* Somebody already got the lock, that one will manage waking up others */
+    return;
+  __pthread_mutex_unlock (lock);
+}
diff --git a/htl/pthread/pt-alloc.c b/htl/pthread/pt-alloc.c
new file mode 100644
index 0000000..e34a043
--- /dev/null
+++ b/htl/pthread/pt-alloc.c
@@ -0,0 +1,219 @@
+/* Allocate a new thread structure.
+   Copyright (C) 2000, 2002, 2005, 2007, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <pt-internal.h>
+
+/* This braindamage is necessary because the standard says that some
+   of the threads functions "shall fail" if "No thread could be found
+   corresponding to that specified by the given thread ID."  */
+
+/* Thread ID lookup table.  */
+struct __pthread **__pthread_threads;
+
+/* The size of the thread ID lookup table.  */
+int __pthread_max_threads;
+
+/* The total number of thread IDs currently in use, or on the list of
+   available thread IDs.  */
+int __pthread_num_threads;
+
+/* A lock for the table, and the other variables above.  */
+pthread_rwlock_t __pthread_threads_lock;
+
+/* List of thread structures corresponding to free thread IDs.  */
+struct __pthread *__pthread_free_threads;
+pthread_mutex_t __pthread_free_threads_lock;
+
+static inline error_t
+initialize_pthread (struct __pthread *new)
+{
+  error_t err;
+
+  err = __pthread_init_specific (new);
+  if (err)
+    return err;
+
+  new->nr_refs = 1;
+  new->cancel_lock = (pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER;
+  new->cancel_hook = NULL;
+  new->cancel_hook_arg = NULL;
+  new->cancel_state = PTHREAD_CANCEL_ENABLE;
+  new->cancel_type = PTHREAD_CANCEL_DEFERRED;
+  new->cancel_pending = 0;
+
+  new->state_lock = (pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER;
+  new->state_cond = (pthread_cond_t) PTHREAD_COND_INITIALIZER;
+
+  new->cancelation_handlers = 0;
+
+  memset (&new->res_state, '\0', sizeof (new->res_state));
+
+#ifdef ENABLE_TLS
+  new->tcb = NULL;
+#endif
+
+  new->next = 0;
+  new->prevp = 0;
+
+  return 0;
+}
+
+
+/* Allocate a new thread structure and its pthread thread ID (but not
+   a kernel thread).  */
+int
+__pthread_alloc (struct __pthread **pthread)
+{
+  error_t err;
+
+  struct __pthread *new;
+  struct __pthread **threads;
+  struct __pthread **old_threads;
+  int max_threads;
+  int new_max_threads;
+
+  pthread_mutex_lock (&__pthread_free_threads_lock);
+  for (new = __pthread_free_threads; new; new = new->next)
+    {
+      /* There is no need to take NEW->STATE_LOCK: if NEW is on this
+	 list, then it is protected by __PTHREAD_FREE_THREADS_LOCK
+	 except in __pthread_dealloc where after it is added to the
+	 list (with the lock held), it drops the lock and then sets
+	 NEW->STATE and immediately stops using NEW.  */
+      if (new->state == PTHREAD_TERMINATED)
+	{
+	  __pthread_dequeue (new);
+	  break;
+	}
+    }
+  pthread_mutex_unlock (&__pthread_free_threads_lock);
+
+  if (new)
+    {
+#ifdef ENABLE_TLS
+      if (new->tcb)
+	{
+	  /* Drop old values */
+	  _dl_deallocate_tls (new->tcb, 1);
+	}
+#endif /* ENABLE_TLS */
+
+      err = initialize_pthread (new);
+      if (! err)
+	*pthread = new;
+      return err;
+    }
+
+  /* Allocate a new thread structure.  */
+  new = malloc (sizeof (struct __pthread));
+  if (new == NULL)
+    return ENOMEM;
+
+  err = initialize_pthread (new);
+  if (err)
+    {
+      free (new);
+      return err;
+    }
+
+ retry:
+  __pthread_rwlock_wrlock (&__pthread_threads_lock);
+
+  if (__pthread_num_threads < __pthread_max_threads)
+    {
+      /* We have a free slot.  Use the slot number plus one as the
+         thread ID for the new thread.  */
+      new->thread = 1 + __pthread_num_threads++;
+      __pthread_threads[new->thread - 1] = NULL;
+
+      __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+      *pthread = new;
+      return 0;
+    }
+#ifdef PTHREAD_THREADS_MAX
+  else if (__pthread_num_threads >= PTHREAD_THREADS_MAX)
+    {
+      /* We have reached the limit on the number of threads per process.  */
+      __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+      free (new);
+      return EAGAIN;
+    }
+#endif
+
+  /* We are going to enlarge the threads table.  Save its current
+     size.  We're going to release the lock before doing the necessary
+     memory allocation, since that's a potentially blocking operation.  */
+  max_threads = __pthread_max_threads;
+
+  __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+  /* Allocate a new lookup table that's twice as large.  */
+  new_max_threads
+    = max_threads > 0 ? max_threads * 2 : _POSIX_THREAD_THREADS_MAX;
+  threads = malloc (new_max_threads * sizeof (struct __pthread *));
+  if (threads == NULL)
+    {
+      free (new);
+      return ENOMEM;
+    }
+
+  __pthread_rwlock_wrlock (&__pthread_threads_lock);
+
+  /* Check if nobody else has already enlarged the table.  */
+  if (max_threads != __pthread_max_threads)
+    {
+      /* Yep, they did.  */
+      __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+      /* Free the newly allocated table and try again to allocate a slot.  */
+      free (threads);
+      goto retry;
+    }
+
+  /* Copy over the contents of the old table.  */
+  memcpy (threads, __pthread_threads,
+	  __pthread_max_threads * sizeof (struct __pthread *));
+
+  /* Save the location of the old table.  We want to deallocate its
+     storage after we released the lock.  */
+  old_threads = __pthread_threads;
+
+  /* Replace the table with the new one.  */
+  __pthread_max_threads = new_max_threads;
+  __pthread_threads = threads;
+
+  /* And allocate ourselves one of the newly created slots.  */
+  new->thread = 1 + __pthread_num_threads++;
+  __pthread_threads[new->thread - 1] = NULL;
+
+  __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+  free (old_threads);
+
+  *pthread = new;
+  return 0;
+}
diff --git a/htl/pthread/pt-cancel.c b/htl/pthread/pt-cancel.c
new file mode 100644
index 0000000..96c77f7
--- /dev/null
+++ b/htl/pthread/pt-cancel.c
@@ -0,0 +1,63 @@
+/* Cancel a thread.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+int
+pthread_cancel (pthread_t t)
+{
+  int err = 0;
+  struct __pthread *p;
+
+  p = __pthread_getid (t);
+  if (! p)
+    return ESRCH;
+
+  __pthread_mutex_lock (&p->cancel_lock);
+  if (p->cancel_pending)
+    {
+      __pthread_mutex_unlock (&p->cancel_lock);
+      return 0;
+    }
+
+  p->cancel_pending = 1;
+
+  if (p->cancel_state != PTHREAD_CANCEL_ENABLE)
+    {
+      __pthread_mutex_unlock (&p->cancel_lock);
+      return 0;
+    }
+
+  if (p->cancel_type == PTHREAD_CANCEL_ASYNCHRONOUS)
+    /* CANCEL_LOCK is unlocked by this call.  */
+    err = __pthread_do_cancel (p);
+  else
+    {
+      if (p->cancel_hook != NULL)
+	/* Thread blocking on a cancellation point.  Invoke hook to unblock.
+	   See __pthread_cond_timedwait_internal.  */
+	p->cancel_hook (p->cancel_hook_arg);
+
+      __pthread_mutex_unlock (&p->cancel_lock);
+    }
+
+  return err;
+}
diff --git a/htl/pthread/pt-cleanup.c b/htl/pthread/pt-cleanup.c
new file mode 100644
index 0000000..58865aa
--- /dev/null
+++ b/htl/pthread/pt-cleanup.c
@@ -0,0 +1,28 @@
+/* Add a cancelation handler to the stack.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+struct __pthread_cancelation_handler **
+__pthread_get_cleanup_stack (void)
+{
+  return &_pthread_self ()->cancelation_handlers;
+}
diff --git a/htl/pthread/pt-create.c b/htl/pthread/pt-create.c
new file mode 100644
index 0000000..e517087
--- /dev/null
+++ b/htl/pthread/pt-create.c
@@ -0,0 +1,254 @@
+/* Thread creation.
+   Copyright (C) 2000, 2002, 2005, 2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <resolv.h>
+
+#include <bits/pt-atomic.h>
+#include <hurd/resource.h>
+
+#include <pt-internal.h>
+
+#if IS_IN (libpthread)
+# include <ctype.h>
+#endif
+#ifdef HAVE_USELOCALE
+# include <locale.h>
+#endif
+
+/* The total number of pthreads currently active.  This is defined
+   here since it would be really stupid to have a threads-using
+   program that doesn't call `pthread_create'.  */
+__atomic_t __pthread_total;
+
+
+/* The entry-point for new threads.  */
+static void
+entry_point (struct __pthread *self, void *(*start_routine)(void *), void *arg)
+{
+#ifdef ENABLE_TLS
+  ___pthread_self = self;
+  __resp = &self->res_state;
+#endif
+
+#if IS_IN (libpthread)
+  /* Initialize pointers to locale data.  */
+  __ctype_init ();
+#endif
+#ifdef HAVE_USELOCALE
+  /* A fresh thread needs to be bound to the global locale.  */
+  uselocale (LC_GLOBAL_LOCALE);
+#endif
+
+  __pthread_startup ();
+
+  pthread_exit (start_routine (arg));
+}
+
+/* Create a thread with attributes given by ATTR, executing
+   START_ROUTINE with argument ARG.  */
+int
+pthread_create (pthread_t *thread, const pthread_attr_t *attr,
+		void *(*start_routine)(void *), void *arg)
+{
+  int err;
+  struct __pthread *pthread;
+
+  err = __pthread_create_internal (&pthread, attr, start_routine, arg);
+  if (! err)
+    *thread = pthread->thread;
+  else if (err == ENOMEM)
+    err = EAGAIN;
+
+  return err;
+}
+
+/* Internal version of pthread_create.  See comment in
+   pt-internal.h.  */
+int
+__pthread_create_internal (struct __pthread **thread,
+			   const pthread_attr_t *attr,
+			   void *(*start_routine)(void *), void *arg)
+{
+  int err;
+  struct __pthread *pthread;
+  const struct __pthread_attr *setup;
+  sigset_t sigset;
+  size_t stacksize;
+
+  /* Allocate a new thread structure.  */
+  err = __pthread_alloc (&pthread);
+  if (err)
+    goto failed;
+
+  /* Use the default attributes if ATTR is NULL.  */
+  setup = attr ? attr : &__pthread_default_attr;
+
+  stacksize = setup->__stacksize;
+  if (!stacksize)
+    {
+      struct rlimit rlim;
+      __getrlimit(RLIMIT_STACK, &rlim);
+      if (rlim.rlim_cur != RLIM_INFINITY)
+	stacksize = rlim.rlim_cur;
+      if (!stacksize)
+	stacksize = PTHREAD_STACK_DEFAULT;
+    }
+
+  /* Initialize the thread state.  */
+  pthread->state = (setup->__detachstate == PTHREAD_CREATE_DETACHED
+		    ? PTHREAD_DETACHED : PTHREAD_JOINABLE);
+
+  if (setup->__stackaddr)
+    {
+      pthread->stackaddr = setup->__stackaddr;
+
+      /* If the user supplied a stack, it is not our responsibility to
+	 setup a stack guard.  */
+      pthread->guardsize = 0;
+      pthread->stack = 0;
+    }
+  else
+    {
+      /* Allocate a stack.  */
+      err = __pthread_stack_alloc (&pthread->stackaddr,
+				   ((setup->__guardsize + __vm_page_size-1)
+				    / __vm_page_size) * __vm_page_size
+				   + stacksize);
+      if (err)
+	goto failed_stack_alloc;
+
+      pthread->guardsize = setup->__guardsize;
+      pthread->stack = 1;
+    }
+
+  pthread->stacksize = stacksize;
+
+  /* Allocate the kernel thread and other required resources.  */
+  err = __pthread_thread_alloc (pthread);
+  if (err)
+    goto failed_thread_alloc;
+
+#ifdef ENABLE_TLS
+  pthread->tcb = _dl_allocate_tls (NULL);
+  if (!pthread->tcb)
+    {
+      err = ENOMEM;
+      goto failed_thread_tls_alloc;
+    }
+  pthread->tcb->tcb = pthread->tcb;
+#endif /* ENABLE_TLS */
+
+  /* And initialize the rest of the machine context.  This may include
+     additional machine- and system-specific initializations that
+     prove convenient.  */
+  err = __pthread_setup (pthread, entry_point, start_routine, arg);
+  if (err)
+    goto failed_setup;
+
+  /* Initialize the system-specific signal state for the new
+     thread.  */
+  err = __pthread_sigstate_init (pthread);
+  if (err)
+    goto failed_sigstate;
+
+  /* If the new thread is joinable, add a reference for the caller.  */
+  if (pthread->state == PTHREAD_JOINABLE)
+    pthread->nr_refs++;
+
+  /* Set the new thread's signal mask and set the pending signals to
+     empty.  POSIX says: "The signal mask shall be inherited from the
+     creating thread.  The set of signals pending for the new thread
+     shall be empty."  If the currnet thread is not a pthread then we
+     just inherit the process' sigmask.  */
+  if (__pthread_num_threads == 1)
+    err = sigprocmask (0, 0, &sigset);
+  else
+    err = __pthread_sigstate (_pthread_self (), 0, 0, &sigset, 0);
+  assert_perror (err);
+
+  err = __pthread_sigstate (pthread, SIG_SETMASK, &sigset, 0, 1);
+  assert_perror (err);
+
+  /* Increase the total number of threads.  We do this before actually
+     starting the new thread, since the new thread might immediately
+     call `pthread_exit' which decreases the number of threads and
+     calls `exit' if the number of threads reaches zero.  Increasing
+     the number of threads from within the new thread isn't an option
+     since this thread might return and call `pthread_exit' before the
+     new thread runs.  */
+  __atomic_inc (&__pthread_total);
+
+  /* Store a pointer to this thread in the thread ID lookup table.  We
+     could use __thread_setid, however, we only lock for reading as no
+     other thread should be using this entry (we also assume that the
+     store is atomic).  */
+  __pthread_rwlock_rdlock (&__pthread_threads_lock);
+  __pthread_threads[pthread->thread - 1] = pthread;
+  __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+  /* At this point it is possible to guess our pthread ID.  We have to
+     make sure that all functions taking a pthread_t argument can
+     handle the fact that this thread isn't really running yet.  Since
+     the new thread might be passed its ID through pthread_create (to
+     avoid calling pthread_self), read it before starting the thread.  */
+  *thread = pthread;
+
+  /* Schedule the new thread.  */
+  err = __pthread_thread_start (pthread);
+  if (err)
+    goto failed_starting;
+
+
+  return 0;
+
+ failed_starting:
+  /* If joinable, a reference was added for the caller.  */
+  if (pthread->state == PTHREAD_JOINABLE)
+    __pthread_dealloc (pthread);
+
+  __pthread_setid (pthread->thread, NULL);
+  __atomic_dec (&__pthread_total);
+ failed_sigstate:
+  __pthread_sigstate_destroy (pthread);
+ failed_setup:
+#ifdef ENABLE_TLS
+  _dl_deallocate_tls (pthread->tcb, 1);
+  pthread->tcb = NULL;
+ failed_thread_tls_alloc:
+#endif /* ENABLE_TLS */
+  __pthread_thread_terminate (pthread);
+
+  /* __pthread_thread_terminate has taken care of deallocating the stack and
+     the thread structure.  */
+  goto failed;
+ failed_thread_alloc:
+  if (pthread->stack)
+    __pthread_stack_dealloc (pthread->stackaddr,
+			     ((setup->__guardsize + __vm_page_size-1)
+			      / __vm_page_size) * __vm_page_size
+			     + stacksize);
+ failed_stack_alloc:
+  __pthread_dealloc (pthread);
+ failed:
+  return err;
+}
diff --git a/htl/pthread/pt-dealloc.c b/htl/pthread/pt-dealloc.c
new file mode 100644
index 0000000..f44aefa
--- /dev/null
+++ b/htl/pthread/pt-dealloc.c
@@ -0,0 +1,69 @@
+/* Deallocate a thread structure.
+   Copyright (C) 2000, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <pt-internal.h>
+
+#include <bits/pt-atomic.h>
+
+/* List of thread structures corresponding to free thread IDs.  */
+extern struct __pthread *__pthread_free_threads;
+extern pthread_mutex_t __pthread_free_threads_lock;
+
+
+/* Deallocate the thread structure for PTHREAD.  */
+void
+__pthread_dealloc (struct __pthread *pthread)
+{
+  assert (pthread->state != PTHREAD_TERMINATED);
+
+  if (! __atomic_dec_and_test (&pthread->nr_refs))
+    return;
+
+  /* Withdraw this thread from the thread ID lookup table.  */
+  __pthread_setid (pthread->thread, NULL);
+
+  /* Mark the thread as terminated.  We broadcast the condition
+     here to prevent pthread_join from waiting for this thread to
+     exit where it was never really started.  Such a call to
+     pthread_join is completely bogus, but unfortunately allowed
+     by the standards.  */
+  __pthread_mutex_lock (&pthread->state_lock);
+  if (pthread->state != PTHREAD_EXITED)
+    __pthread_cond_broadcast (&pthread->state_cond);
+  __pthread_mutex_unlock (&pthread->state_lock);
+
+  /* We do not actually deallocate the thread structure, but add it to
+     a list of re-usable thread structures.  */
+  __pthread_mutex_lock (&__pthread_free_threads_lock);
+  __pthread_enqueue (&__pthread_free_threads, pthread);
+  __pthread_mutex_unlock (&__pthread_free_threads_lock);
+
+  /* Setting PTHREAD->STATE to PTHREAD_TERMINATED makes this TCB
+     available for reuse.  After that point, we can no longer assume
+     that PTHREAD is valid.
+
+     Note that it is safe to not lock this update to PTHREAD->STATE:
+     the only way that it can now be accessed is in __pthread_alloc,
+     which reads this variable.  */
+  pthread->state = PTHREAD_TERMINATED;
+}
diff --git a/htl/pthread/pt-detach.c b/htl/pthread/pt-detach.c
new file mode 100644
index 0000000..3431f1b
--- /dev/null
+++ b/htl/pthread/pt-detach.c
@@ -0,0 +1,80 @@
+/* Detach a thread.
+   Copyright (C) 2000, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stddef.h>
+
+#include <pt-internal.h>
+
+/* Indicate that the storage for THREAD can be reclaimed when it
+   terminates.  */
+int
+pthread_detach (pthread_t thread)
+{
+  struct __pthread *pthread;
+  int err = 0;
+
+  /* Lookup the thread structure for THREAD.  */
+  pthread = __pthread_getid (thread);
+  if (pthread == NULL)
+    return ESRCH;
+
+  __pthread_mutex_lock (&pthread->state_lock);
+
+  switch (pthread->state)
+    {
+    case PTHREAD_JOINABLE:
+      /* THREAD still running.  Mark it as detached such that its
+         resources can be reclaimed as soon as the thread exits.  */
+      pthread->state = PTHREAD_DETACHED;
+
+      /* Broadcast the condition.  This will make threads that are
+	 waiting to join THREAD continue with hopefully disastrous
+	 consequences instead of blocking indefinitely.  */
+      pthread_cond_broadcast (&pthread->state_cond);
+      __pthread_mutex_unlock (&pthread->state_lock);
+
+      __pthread_dealloc (pthread);
+      break;
+
+    case PTHREAD_EXITED:
+      __pthread_mutex_unlock (&pthread->state_lock);
+
+      /* THREAD has already exited.  PTHREAD remained after the thread
+	 exited in order to provide the exit status, but it turns out
+	 it won't be needed.  */
+      __pthread_dealloc (pthread);
+      break;
+
+    case PTHREAD_TERMINATED:
+      /* Pretend THREAD wasn't there in the first place.  */
+      __pthread_mutex_unlock (&pthread->state_lock);
+      err = ESRCH;
+      break;
+
+    default:
+      /* Thou shalt not detach non-joinable threads!  */
+      __pthread_mutex_unlock (&pthread->state_lock);
+      err = EINVAL;
+      break;
+    }
+
+  return err;
+}
diff --git a/htl/pthread/pt-exit.c b/htl/pthread/pt-exit.c
new file mode 100644
index 0000000..af75937
--- /dev/null
+++ b/htl/pthread/pt-exit.c
@@ -0,0 +1,112 @@
+/* Thread termination.
+   Copyright (C) 2000, 2002, 2005, 2007, 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <pt-internal.h>
+
+#include <bits/pt-atomic.h>
+
+
+/* Terminate the current thread and make STATUS available to any
+   thread that might join it.  */
+void
+__pthread_exit (void *status)
+{
+  struct __pthread *self = _pthread_self ();
+  struct __pthread_cancelation_handler **handlers;
+  int oldstate;
+
+  /* Run any cancelation handlers.  According to POSIX, the
+     cancellation cleanup handlers should be called with cancellation
+     disabled.  */
+  pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
+
+  for (handlers = __pthread_get_cleanup_stack ();
+       *handlers;
+       *handlers = (*handlers)->__next)
+    (*handlers)->__handler ((*handlers)->__arg);
+
+  pthread_setcancelstate (oldstate, &oldstate);
+
+  /* Decrease the number of threads.  We use an atomic operation to
+     make sure that only the last thread calls `exit'.  */
+  if (__atomic_dec_and_test (&__pthread_total))
+    /* We are the last thread.  */
+    exit (0);
+
+  /* Note that after this point the process can be terminated at any
+     point if another thread calls `pthread_exit' and happens to be
+     the last thread.  */
+
+  __pthread_mutex_lock (&self->state_lock);
+
+  if (self->cancel_state == PTHREAD_CANCEL_ENABLE && self->cancel_pending)
+    status = PTHREAD_CANCELED;
+
+  switch (self->state)
+    {
+    default:
+      assert (! "Consistency error: unexpected self->state");
+      abort ();
+      break;
+
+    case PTHREAD_DETACHED:
+      __pthread_mutex_unlock (&self->state_lock);
+
+      break;
+
+    case PTHREAD_JOINABLE:
+      /* We need to stay around for a while since another thread
+         might want to join us.  */
+      self->state = PTHREAD_EXITED;
+
+      /* We need to remember the exit status.  A thread joining us
+         might ask for it.  */
+      self->status = status;
+
+      /* Broadcast the condition.  This will wake up threads that are
+         waiting to join us.  */
+      __pthread_cond_broadcast (&self->state_cond);
+      __pthread_mutex_unlock (&self->state_lock);
+
+      break;
+    }
+
+  /* Destroy any thread specific data.  */
+  __pthread_destroy_specific (self);
+
+  /* Destroy any signal state.  */
+  __pthread_sigstate_destroy (self);
+
+  /* Self terminating requires TLS, so defer the release of the TCB until
+     the thread structure is reused.  */
+
+  /* Release kernel resources, including the kernel thread and the stack,
+     and drop the self reference.  */
+  __pthread_thread_terminate (self);
+
+  /* NOTREACHED */
+  abort ();
+}
+
+strong_alias (__pthread_exit, pthread_exit);
diff --git a/htl/pthread/pt-getattr.c b/htl/pthread/pt-getattr.c
new file mode 100644
index 0000000..0b86c66
--- /dev/null
+++ b/htl/pthread/pt-getattr.c
@@ -0,0 +1,52 @@
+/* Thread attributes retrieval.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Initialize thread attribute *ATTR with attributes corresponding to the
+   already running thread THREAD.  It shall be called on an uninitialized ATTR
+   and destroyed with pthread_attr_destroy when no longer needed.  */
+int
+__pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
+{
+  struct __pthread *pthread;
+
+  pthread = __pthread_getid(thread);
+  if (pthread == NULL)
+    return ESRCH;
+
+  /* Some attributes (schedparam, inheritsched, contentionscope and schedpolicy)
+     are not supported yet, so fill them with our default values.  */
+  *attr = __pthread_default_attr;
+
+  attr->__stackaddr = pthread->stackaddr +
+		      ((pthread->guardsize + __vm_page_size-1)
+		       / __vm_page_size * __vm_page_size);
+  attr->__stacksize = pthread->stacksize;
+  attr->__guardsize = pthread->guardsize;
+  attr->__detachstate = (pthread->state == PTHREAD_DETACHED
+		       ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE);
+
+  return 0;
+}
+weak_alias (__pthread_getattr_np, pthread_getattr_np)
diff --git a/htl/pthread/pt-initialize.c b/htl/pthread/pt-initialize.c
new file mode 100644
index 0000000..bb3e1fc
--- /dev/null
+++ b/htl/pthread/pt-initialize.c
@@ -0,0 +1,88 @@
+/* Initialize pthreads library.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <string.h>
+
+#include <pt-internal.h>
+#include <set-hooks.h>
+
+#include <pthread.h>
+#include <pthread-functions.h>
+
+DEFINE_HOOK (__pthread_init, (void));
+
+#if IS_IN (libpthread)
+static const struct pthread_functions pthread_functions =
+  {
+    .ptr_pthread_attr_destroy = __pthread_attr_destroy,
+    .ptr_pthread_attr_init = __pthread_attr_init,
+    .ptr_pthread_attr_getdetachstate = __pthread_attr_getdetachstate,
+    .ptr_pthread_attr_setdetachstate = __pthread_attr_setdetachstate,
+    .ptr_pthread_attr_getinheritsched = __pthread_attr_getinheritsched,
+    .ptr_pthread_attr_setinheritsched = __pthread_attr_setinheritsched,
+    .ptr_pthread_attr_getschedparam = __pthread_attr_getschedparam,
+    .ptr_pthread_attr_setschedparam = __pthread_attr_setschedparam,
+    .ptr_pthread_attr_getschedpolicy = __pthread_attr_getschedpolicy,
+    .ptr_pthread_attr_setschedpolicy = __pthread_attr_setschedpolicy,
+    .ptr_pthread_attr_getscope = __pthread_attr_getscope,
+    .ptr_pthread_attr_setscope = __pthread_attr_setscope,
+    .ptr_pthread_condattr_destroy = __pthread_condattr_destroy,
+    .ptr_pthread_condattr_init = __pthread_condattr_init,
+    .ptr_pthread_cond_broadcast = __pthread_cond_broadcast,
+    .ptr_pthread_cond_destroy = __pthread_cond_destroy,
+    .ptr_pthread_cond_init = __pthread_cond_init,
+    .ptr_pthread_cond_signal = __pthread_cond_signal,
+    .ptr_pthread_cond_wait = __pthread_cond_wait,
+    .ptr_pthread_cond_timedwait = __pthread_cond_timedwait,
+    .ptr_pthread_equal = __pthread_equal,
+    .ptr___pthread_exit = __pthread_exit,
+    .ptr_pthread_getschedparam = __pthread_getschedparam,
+    .ptr_pthread_setschedparam = __pthread_setschedparam,
+    .ptr_pthread_mutex_destroy = _pthread_mutex_destroy,
+    .ptr_pthread_mutex_init = _pthread_mutex_init,
+    .ptr_pthread_mutex_lock = __pthread_mutex_lock,
+    .ptr_pthread_mutex_trylock = __pthread_mutex_trylock,
+    .ptr_pthread_mutex_unlock = __pthread_mutex_unlock,
+    .ptr_pthread_self = __pthread_self,
+    .ptr___pthread_setcancelstate = __pthread_setcancelstate,
+    .ptr_pthread_setcanceltype = __pthread_setcanceltype,
+    .ptr___pthread_get_cleanup_stack = __pthread_get_cleanup_stack,
+    .ptr_pthread_once = __pthread_once,
+    .ptr_pthread_rwlock_rdlock = __pthread_rwlock_rdlock,
+    .ptr_pthread_rwlock_wrlock = __pthread_rwlock_wrlock,
+    .ptr_pthread_rwlock_unlock = __pthread_rwlock_unlock,
+    .ptr___pthread_key_create = __pthread_key_create,
+    .ptr___pthread_getspecific = __pthread_getspecific,
+    .ptr___pthread_setspecific = __pthread_setspecific,
+    .ptr__IO_flockfile = _cthreads_flockfile,
+    .ptr__IO_funlockfile = _cthreads_funlockfile,
+    .ptr__IO_ftrylockfile = _cthreads_ftrylockfile,
+  };
+#endif /* IS_IN (libpthread) */
+
+/* Initialize the pthreads library.  */
+void
+___pthread_init (void)
+{
+#if IS_IN (libpthread)
+  __libc_pthread_init(&pthread_functions);
+#endif
+  RUN_HOOK (__pthread_init, ());
+}
diff --git a/htl/pthread/pt-internal.h b/htl/pthread/pt-internal.h
new file mode 100644
index 0000000..0793046
--- /dev/null
+++ b/htl/pthread/pt-internal.h
@@ -0,0 +1,330 @@
+/* Internal defenitions for pthreads library.
+   Copyright (C) 2000, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _PT_INTERNAL_H
+#define _PT_INTERNAL_H	1
+
+#include <pthread.h>
+#include <stddef.h>
+#include <sched.h>
+#include <signal.h>
+#include <assert.h>
+#define __need_res_state
+#include <resolv.h>
+
+#include <bits/pt-atomic.h>
+
+#include <pt-key.h>
+
+#include <pt-sysdep.h>
+#include <pt-machdep.h>
+
+#if IS_IN (libpthread)
+# include <ldsodefs.h>
+#endif
+
+/* Thread state.  */
+enum pthread_state
+{
+  /* The thread is running and joinable.  */
+  PTHREAD_JOINABLE = 0,
+  /* The thread is running and detached.  */
+  PTHREAD_DETACHED,
+  /* A joinable thread exited and its return code is available.  */
+  PTHREAD_EXITED,
+  /* The thread structure is unallocated and available for reuse.  */
+  PTHREAD_TERMINATED
+};
+
+#ifndef PTHREAD_KEY_MEMBERS
+# define PTHREAD_KEY_MEMBERS
+#endif
+
+#ifndef PTHREAD_SYSDEP_MEMBERS
+# define PTHREAD_SYSDEP_MEMBERS
+#endif
+
+#if !(IS_IN (libpthread))
+#ifdef ENABLE_TLS
+/* Type of the TCB.  */
+typedef struct
+{
+  void *tcb;			/* Points to this structure.  */
+  void *dtv;			/* Vector of pointers to TLS data.  */
+  thread_t self;		/* This thread's control port.  */
+} tcbhead_t;
+#endif /* ENABLE_TLS */
+#endif /* ! IS_IN (libpthread) */
+
+/* This structure describes a POSIX thread.  */
+struct __pthread
+{
+  /* Thread ID.  */
+  pthread_t thread;
+
+  __atomic_t nr_refs;   /* Detached threads have a self reference only,
+			   while joinable threads have two references.
+			   These are used to keep the structure valid at
+			   thread destruction.  Detaching/joining a thread
+			   drops a reference.  */
+
+  /* Cancellation.  */
+  pthread_mutex_t cancel_lock;  /* Protect cancel_xxx members.  */
+  void (*cancel_hook)(void *);	/* Called to unblock a thread blocking
+				   in a cancellation point (namely,
+				   __pthread_cond_timedwait_internal).  */
+  void *cancel_hook_arg;
+  int cancel_state;
+  int cancel_type;
+  int cancel_pending;
+  struct __pthread_cancelation_handler *cancelation_handlers;
+
+  /* Thread stack.  */
+  void *stackaddr;
+  size_t stacksize;
+  size_t guardsize;
+  int stack;			/* Nonzero if the stack was allocated.  */
+
+  /* Exit status.  */
+  void *status;
+
+  /* Thread state.  */
+  enum pthread_state state;
+  pthread_mutex_t state_lock;	/* Locks the state.  */
+  pthread_cond_t state_cond;	/* Signalled when the state changes.  */
+
+  /* Resolver state.  */
+  struct __res_state res_state;
+
+  /* Thread context.  */
+  struct pthread_mcontext mcontext;
+
+  PTHREAD_KEY_MEMBERS
+
+  PTHREAD_SYSDEP_MEMBERS
+
+#ifdef ENABLE_TLS
+  tcbhead_t *tcb;
+#endif /* ENABLE_TLS */
+
+  /* Queue links.  Since PREVP is used to determine if a thread has been
+     awaken, it must be protected by the queue lock.  */
+  struct __pthread *next, **prevp;
+};
+
+/* Enqueue an element THREAD on the queue *HEAD.  */
+static inline void
+__pthread_enqueue (struct __pthread **head, struct __pthread *thread)
+{
+  assert (thread->prevp == 0);
+
+  thread->next = *head;
+  thread->prevp = head;
+  if (*head)
+    (*head)->prevp = &thread->next;
+  *head = thread;
+}
+
+/* Dequeue the element THREAD from the queue it is connected to.  */
+static inline void
+__pthread_dequeue (struct __pthread *thread)
+{
+  assert (thread);
+  assert (thread->prevp);
+
+  if (thread->next)
+    thread->next->prevp = thread->prevp;
+  *thread->prevp = thread->next;
+  thread->prevp = 0;
+}
+
+/* Iterate over QUEUE storing each element in ELEMENT.  */
+#define __pthread_queue_iterate(queue, element)				\
+  for (struct __pthread *__pdi_next = (queue);				\
+       ((element) = __pdi_next)						\
+	 && ((__pdi_next = __pdi_next->next),				\
+	     1);							\
+       )
+
+/* Iterate over QUEUE dequeuing each element, storing it in
+   ELEMENT.  */
+#define __pthread_dequeuing_iterate(queue, element)			\
+  for (struct __pthread *__pdi_next = (queue);				\
+       ((element) = __pdi_next)						\
+	 && ((__pdi_next = __pdi_next->next),				\
+	     ((element)->prevp = 0),					\
+	     1);							\
+       )
+
+/* The total number of threads currently active.  */
+extern __atomic_t __pthread_total;
+
+/* The total number of thread IDs currently in use, or on the list of
+   available thread IDs.  */
+extern int __pthread_num_threads;
+
+/* Concurrency hint.  */
+extern int __pthread_concurrency;
+
+/* Array of __pthread structures and its lock.  Indexed by the pthread
+   id minus one.  (Why not just use the pthread id?  Because some
+   brain-dead users of the pthread interface incorrectly assume that 0
+   is an invalid pthread id.)  */
+extern struct __pthread **__pthread_threads;
+extern pthread_rwlock_t __pthread_threads_lock;
+
+#define __pthread_getid(thread) \
+  ({ struct __pthread *__t;                                                  \
+     __pthread_rwlock_rdlock (&__pthread_threads_lock);                      \
+     __t = __pthread_threads[thread - 1];                                    \
+     __pthread_rwlock_unlock (&__pthread_threads_lock);                      \
+     __t; })
+
+#define __pthread_setid(thread, pthread) \
+  __pthread_rwlock_wrlock (&__pthread_threads_lock);                         \
+  __pthread_threads[thread - 1] = pthread;                                   \
+  __pthread_rwlock_unlock (&__pthread_threads_lock);
+
+/* Similar to pthread_self, but returns the thread descriptor instead
+   of the thread ID.  */
+#ifndef _pthread_self
+extern struct __pthread *_pthread_self (void);
+#endif
+
+
+/* Initialize the pthreads library.  */
+extern void ___pthread_init (void);
+
+/* Internal version of pthread_create.  Rather than return the new
+   tid, we return the whole __pthread structure in *PTHREAD.  */
+extern int __pthread_create_internal (struct __pthread **__restrict pthread,
+				      const pthread_attr_t *__restrict attr,
+				      void *(*start_routine)(void *),
+				      void *__restrict arg);
+
+/* Allocate a new thread structure and a pthread thread ID (but not a
+   kernel thread or a stack).  THREAD has one reference.  */
+extern int __pthread_alloc (struct __pthread **thread);
+
+/* Deallocate the thread structure.  This is the dual of
+   __pthread_alloc (N.B. it does not call __pthread_stack_dealloc nor
+   __pthread_thread_terminate).  THREAD loses one reference and is
+   released if the reference counter drops to 0.  */
+extern void __pthread_dealloc (struct __pthread *thread);
+
+
+/* Allocate a stack of size STACKSIZE.  The stack base shall be
+   returned in *STACKADDR.  */
+extern int __pthread_stack_alloc (void **stackaddr, size_t stacksize);
+
+/* Deallocate the stack STACKADDR of size STACKSIZE.  */
+extern void __pthread_stack_dealloc (void *stackaddr, size_t stacksize);
+
+
+/* Setup thread THREAD's context.  */
+extern int __pthread_setup (struct __pthread *__restrict thread,
+				  void (*entry_point)(struct __pthread *,
+						      void *(*)(void *),
+						      void *),
+				  void *(*start_routine)(void *),
+				  void *__restrict arg);
+
+
+/* Allocate a kernel thread (and any miscellaneous system dependent
+   resources) for THREAD; it must not be placed on the run queue.  */
+extern int __pthread_thread_alloc (struct __pthread *thread);
+
+/* Start THREAD making it eligible to run.  */
+extern int __pthread_thread_start (struct __pthread *thread);
+
+/* Terminate the kernel thread associated with THREAD, and deallocate its
+   stack as well as any other kernel resource associated with it.
+   In addition, THREAD looses one reference.
+
+   This function can be called by any thread, including the target thread.
+   Since some resources that are destroyed along the kernel thread are
+   stored in thread-local variables, the conditions required for this
+   function to behave correctly are a bit unusual : as long as the target
+   thread hasn't been started, any thread can terminate it, but once it
+   has started, no other thread can terminate it, so that thread-local
+   variables created by that thread are correctly released.  */
+extern void __pthread_thread_terminate (struct __pthread *thread);
+
+
+/* Called by a thread just before it calls the provided start
+   routine.  */
+extern void __pthread_startup (void);
+
+/* Block THREAD.  */
+extern void __pthread_block (struct __pthread *thread);
+
+/* Block THREAD until *ABSTIME is reached.  */
+extern error_t __pthread_timedblock (struct __pthread *__restrict thread,
+				     const struct timespec *__restrict abstime,
+				     clockid_t clock_id);
+
+/* Wakeup THREAD.  */
+extern void __pthread_wakeup (struct __pthread *thread);
+
+
+/* Perform a cancelation.  The CANCEL_LOCK member of the given thread must
+   be locked before calling this function, which must unlock it.  */
+extern int __pthread_do_cancel (struct __pthread *thread);
+
+
+/* Initialize the thread specific data structures.  THREAD must be the
+   calling thread.  */
+extern error_t __pthread_init_specific (struct __pthread *thread);
+
+/* Call the destructors on all of the thread specific data in THREAD.
+   THREAD must be the calling thread.  */
+extern void __pthread_destroy_specific (struct __pthread *thread);
+
+
+/* Initialize newly create thread *THREAD's signal state data
+   structures.  */
+extern error_t __pthread_sigstate_init (struct __pthread *thread);
+
+/* Destroy the signal state data structures associcated with thread
+   *THREAD.  */
+extern void __pthread_sigstate_destroy (struct __pthread *thread);
+
+/* Modify thread *THREAD's signal state.  */
+extern error_t __pthread_sigstate (struct __pthread *__restrict thread, int how,
+				   const sigset_t *__restrict set,
+				   sigset_t *__restrict oset,
+				   int clear_pending);
+
+
+/* Default thread attributes.  */
+extern const struct __pthread_attr __pthread_default_attr;
+
+/* Default barrier attributes.  */
+extern const struct __pthread_barrierattr __pthread_default_barrierattr;
+
+/* Default mutex attributes.  */
+extern const struct __pthread_mutexattr __pthread_default_mutexattr;
+
+/* Default rdlock attributes.  */
+extern const struct __pthread_rwlockattr __pthread_default_rwlockattr;
+
+/* Default condition attributes.  */
+extern const struct __pthread_condattr __pthread_default_condattr;
+
+#endif /* pt-internal.h */
diff --git a/htl/pthread/pt-join.c b/htl/pthread/pt-join.c
new file mode 100644
index 0000000..9730afc
--- /dev/null
+++ b/htl/pthread/pt-join.c
@@ -0,0 +1,76 @@
+/* Wait for thread termination.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stddef.h>
+
+#include <pt-internal.h>
+
+/* Make calling thread wait for termination of thread THREAD.  Return
+   the exit status of the thread in *STATUS.  */
+int
+pthread_join (pthread_t thread, void **status)
+{
+  struct __pthread *pthread;
+  int err = 0;
+
+  /* Lookup the thread structure for THREAD.  */
+  pthread = __pthread_getid (thread);
+  if (pthread == NULL)
+    return ESRCH;
+
+  __pthread_mutex_lock (&pthread->state_lock);
+  pthread_cleanup_push ((void (*)(void *)) __pthread_mutex_unlock,
+			&pthread->state_lock);
+
+  /* Rely on pthread_cond_wait being a cancellation point to make
+     pthread_join one too.  */
+  while (pthread->state == PTHREAD_JOINABLE)
+    __pthread_cond_wait (&pthread->state_cond, &pthread->state_lock);
+
+  pthread_cleanup_pop (0);
+
+  switch (pthread->state)
+    {
+    case PTHREAD_EXITED:
+      /* THREAD has already exited.  Salvage its exit status.  */
+      if (status)
+	*status = pthread->status;
+
+      __pthread_mutex_unlock (&pthread->state_lock);
+
+      __pthread_dealloc (pthread);
+      break;
+
+    case PTHREAD_TERMINATED:
+      /* Pretend THREAD wasn't there in the first place.  */
+      __pthread_mutex_unlock (&pthread->state_lock);
+      err = ESRCH;
+      break;
+
+    default:
+      /* Thou shalt not join non-joinable threads!  */
+      __pthread_mutex_unlock (&pthread->state_lock);
+      err = EINVAL;
+      break;
+    }
+
+  return err;
+}
diff --git a/htl/pthread/pt-self.c b/htl/pthread/pt-self.c
new file mode 100644
index 0000000..deb57c0
--- /dev/null
+++ b/htl/pthread/pt-self.c
@@ -0,0 +1,34 @@
+/* Get calling thread's ID.
+   Copyright (C) 2000, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Return the thread ID of the calling thread.  */
+pthread_t
+__pthread_self (void)
+{
+  struct __pthread *self = _pthread_self ();
+  assert (self);
+
+  return self->thread;
+}
+
+strong_alias (__pthread_self, pthread_self);
diff --git a/htl/pthread/pt-setcancelstate.c b/htl/pthread/pt-setcancelstate.c
new file mode 100644
index 0000000..7b60015
--- /dev/null
+++ b/htl/pthread/pt-setcancelstate.c
@@ -0,0 +1,47 @@
+/* Set the cancel state for the calling thread.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_setcancelstate (int state, int *oldstate)
+{
+  struct __pthread *p = _pthread_self ();
+
+  switch (state)
+    {
+    default:
+      return EINVAL;
+    case PTHREAD_CANCEL_ENABLE:
+    case PTHREAD_CANCEL_DISABLE:
+      break;
+    }
+
+  __pthread_mutex_lock (&p->cancel_lock);
+  if (oldstate)
+    *oldstate = p->cancel_state;
+  p->cancel_state = state;
+  __pthread_mutex_unlock (&p->cancel_lock);
+
+  return 0;
+}
+
+strong_alias (__pthread_setcancelstate, pthread_setcancelstate);
diff --git a/htl/pthread/pt-setcanceltype.c b/htl/pthread/pt-setcanceltype.c
new file mode 100644
index 0000000..3cfbe9c
--- /dev/null
+++ b/htl/pthread/pt-setcanceltype.c
@@ -0,0 +1,47 @@
+/* Set the cancel type for the calling thread.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_setcanceltype (int type, int *oldtype)
+{
+  struct __pthread *p = _pthread_self ();
+
+  switch (type)
+    {
+    default:
+      return EINVAL;
+    case PTHREAD_CANCEL_DEFERRED:
+    case PTHREAD_CANCEL_ASYNCHRONOUS:
+      break;
+    }
+
+  __pthread_mutex_lock (&p->cancel_lock);
+  if (oldtype)
+    *oldtype = p->cancel_type;
+  p->cancel_type = type;
+  __pthread_mutex_unlock (&p->cancel_lock);
+
+  return 0;
+}
+
+strong_alias (__pthread_setcanceltype, pthread_setcanceltype);
diff --git a/htl/pthread/pt-sigmask.c b/htl/pthread/pt-sigmask.c
new file mode 100644
index 0000000..1b53873
--- /dev/null
+++ b/htl/pthread/pt-sigmask.c
@@ -0,0 +1,33 @@
+/* Get or set a thread's signal mask.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <signal.h>
+
+#include <pt-internal.h>
+
+int
+pthread_sigmask (int how, const sigset_t *set,
+		 sigset_t *oset)
+{
+  struct __pthread *self = _pthread_self ();
+
+  /* Do not clear SELF's pending signals.  */
+  return __pthread_sigstate (self, how, set, oset, 0);
+}
diff --git a/htl/pthread/pt-spin-inlines.c b/htl/pthread/pt-spin-inlines.c
new file mode 100644
index 0000000..97afb4d
--- /dev/null
+++ b/htl/pthread/pt-spin-inlines.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* <bits/spin-lock.h> declares some extern inline functions.  These
+   functions are declared additionally here for use when inlining is
+   not possible.  */
+
+#define _FORCE_INLINES
+#define __PT_SPIN_INLINE /* empty */
+
+#include <pthread.h>
+
+/* Weak aliases for the spin lock functions.  */
+weak_alias (__pthread_spin_destroy, pthread_spin_destroy);
+weak_alias (__pthread_spin_init, pthread_spin_init);
+weak_alias (__pthread_spin_trylock, pthread_spin_trylock);
+weak_alias (__pthread_spin_lock, pthread_spin_lock);
+weak_alias (__pthread_spin_unlock, pthread_spin_unlock);
diff --git a/htl/pthread/pt-testcancel.c b/htl/pthread/pt-testcancel.c
new file mode 100644
index 0000000..3ba07b6
--- /dev/null
+++ b/htl/pthread/pt-testcancel.c
@@ -0,0 +1,36 @@
+/* Add an explicit cancelation point.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+void
+pthread_testcancel (void)
+{
+  struct __pthread *p = _pthread_self ();
+  int cancelled;
+
+  __pthread_mutex_lock (&p->cancel_lock);
+  cancelled = (p->cancel_state == PTHREAD_CANCEL_ENABLE) && p->cancel_pending;
+  __pthread_mutex_unlock (&p->cancel_lock);
+
+  if (cancelled)
+    pthread_exit (PTHREAD_CANCELED);
+}
diff --git a/htl/pthread/pt-yield.c b/htl/pthread/pt-yield.c
new file mode 100644
index 0000000..27848bb
--- /dev/null
+++ b/htl/pthread/pt-yield.c
@@ -0,0 +1,26 @@
+/* Yield the processor to another thread or process.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <sched.h>
+
+int pthread_yield(void)
+{
+  return sched_yield ();
+}
diff --git a/htl/shlib-versions b/htl/shlib-versions
new file mode 100644
index 0000000..98e07a6
--- /dev/null
+++ b/htl/shlib-versions
@@ -0,0 +1 @@
+libpthread=0.3
diff --git a/htl/sysdeps/generic/fork.h b/htl/sysdeps/generic/fork.h
new file mode 100644
index 0000000..c6ac15e
--- /dev/null
+++ b/htl/sysdeps/generic/fork.h
@@ -0,0 +1,29 @@
+/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* Function to call to unregister fork handlers.  */
+extern void __unregister_atfork (void *dso_handle) attribute_hidden;
+#define UNREGISTER_ATFORK(dso_handle) __unregister_atfork (dso_handle)
+
+
+/* C library side function to register new fork handlers.  */
+extern int __register_atfork (void (*__prepare) (void),
+			      void (*__parent) (void),
+			      void (*__child) (void),
+			      void *dso_handle);
+libc_hidden_proto (__register_atfork)
diff --git a/htl/sysdeps/generic/old_pt-atfork.c b/htl/sysdeps/generic/old_pt-atfork.c
new file mode 100644
index 0000000..5366eaa
--- /dev/null
+++ b/htl/sysdeps/generic/old_pt-atfork.c
@@ -0,0 +1,27 @@
+/* Register fork handlers.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT(libpthread, GLIBC_2_12, GLIBC_2_23)
+# define pthread_atfork __dyn_pthread_atfork
+# include "pt-atfork.c"
+# undef pthread_atfork
+compat_symbol (libpthread, __dyn_pthread_atfork, pthread_atfork, GLIBC_2_12);
+#endif
diff --git a/htl/sysdeps/generic/pt-atfork.c b/htl/sysdeps/generic/pt-atfork.c
new file mode 100644
index 0000000..df12fc8
--- /dev/null
+++ b/htl/sysdeps/generic/pt-atfork.c
@@ -0,0 +1,34 @@
+/* Register fork handlers.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+#include <fork.h>
+
+/* This is defined by newer gcc version unique for each module.  */
+extern void *__dso_handle __attribute__ ((__weak__,
+					  __visibility__ ("hidden")));
+
+int
+pthread_atfork (void (*prepare) (void),
+		void (*parent) (void),
+		void (*child) (void))
+{
+  return __register_atfork (prepare, parent, child, &__dso_handle == NULL ? NULL : __dso_handle);
+}
diff --git a/htl/sysdeps/generic/pt-attr-destroy.c b/htl/sysdeps/generic/pt-attr-destroy.c
new file mode 100644
index 0000000..b9bd374
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-destroy.c
@@ -0,0 +1,28 @@
+/* pthread_attr_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_destroy (pthread_attr_t *attr)
+{
+  return 0;
+}
+strong_alias (__pthread_attr_destroy, pthread_attr_destroy);
diff --git a/htl/sysdeps/generic/pt-attr-getdetachstate.c b/htl/sysdeps/generic/pt-attr-getdetachstate.c
new file mode 100644
index 0000000..6a1de67
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getdetachstate.c
@@ -0,0 +1,31 @@
+/* pthread_attr_getdetachstate.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_getdetachstate (const pthread_attr_t *attr,
+			     int *detachstate)
+{
+  *detachstate = attr->__detachstate;
+  return 0;
+}
+
+strong_alias (__pthread_attr_getdetachstate, pthread_attr_getdetachstate);
diff --git a/htl/sysdeps/generic/pt-attr-getguardsize.c b/htl/sysdeps/generic/pt-attr-getguardsize.c
new file mode 100644
index 0000000..909f301
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getguardsize.c
@@ -0,0 +1,29 @@
+/* pthread_attr_getguardsize.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_getguardsize (const pthread_attr_t *attr,
+			   size_t *guardsize)
+{
+  *guardsize = attr->__guardsize;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr-getinheritsched.c b/htl/sysdeps/generic/pt-attr-getinheritsched.c
new file mode 100644
index 0000000..5d5fc84
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getinheritsched.c
@@ -0,0 +1,31 @@
+/* pthread_attr_getinheritsched.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_getinheritsched (const pthread_attr_t *attr,
+			      int *inheritsched)
+{
+  *inheritsched = attr->__inheritsched;
+  return 0;
+}
+
+strong_alias (__pthread_attr_getinheritsched, pthread_attr_getinheritsched);
diff --git a/htl/sysdeps/generic/pt-attr-getschedparam.c b/htl/sysdeps/generic/pt-attr-getschedparam.c
new file mode 100644
index 0000000..85e07a1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getschedparam.c
@@ -0,0 +1,34 @@
+/* pthread_attr_getschedparam.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <sched.h>
+#include <string.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_attr_getschedparam (const pthread_attr_t *attr,
+			    struct sched_param *param)
+{
+  memcpy (param, &attr->__schedparam, sizeof *param);
+  return 0;
+}
+
+strong_alias (__pthread_attr_getschedparam, pthread_attr_getschedparam);
diff --git a/htl/sysdeps/generic/pt-attr-getschedpolicy.c b/htl/sysdeps/generic/pt-attr-getschedpolicy.c
new file mode 100644
index 0000000..caf8a7b
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getschedpolicy.c
@@ -0,0 +1,31 @@
+/* pthread_attr_getschedpolicy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_getschedpolicy (const pthread_attr_t *attr,
+			     int *policy)
+{
+  *policy = attr->__schedpolicy;
+  return 0;
+}
+
+strong_alias (__pthread_attr_getschedpolicy, pthread_attr_getschedpolicy);
diff --git a/htl/sysdeps/generic/pt-attr-getscope.c b/htl/sysdeps/generic/pt-attr-getscope.c
new file mode 100644
index 0000000..5e0c1a0
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getscope.c
@@ -0,0 +1,31 @@
+/* pthread_attr_getscope.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_getscope (const pthread_attr_t *attr,
+		       int *contentionscope)
+{
+  *contentionscope = attr->__contentionscope;
+  return 0;
+}
+
+strong_alias (__pthread_attr_getscope, pthread_attr_getscope);
diff --git a/htl/sysdeps/generic/pt-attr-getstack.c b/htl/sysdeps/generic/pt-attr-getstack.c
new file mode 100644
index 0000000..5ab821e
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getstack.c
@@ -0,0 +1,32 @@
+/* pthread_attr_getstack.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_getstack (const pthread_attr_t *attr,
+		       void **stackaddr,
+		       size_t *stacksize)
+{
+  pthread_attr_getstackaddr (attr, stackaddr);
+  pthread_attr_getstacksize (attr, stacksize);
+  return 0;
+}
+weak_alias (__pthread_attr_getstack, pthread_attr_getstack)
diff --git a/htl/sysdeps/generic/pt-attr-getstackaddr.c b/htl/sysdeps/generic/pt-attr-getstackaddr.c
new file mode 100644
index 0000000..0360701
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getstackaddr.c
@@ -0,0 +1,29 @@
+/* pthread_attr_getstackaddr.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_getstackaddr (const pthread_attr_t *attr,
+			   void **stackaddr)
+{
+  *stackaddr = attr->__stackaddr;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr-getstacksize.c b/htl/sysdeps/generic/pt-attr-getstacksize.c
new file mode 100644
index 0000000..428aaa3
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-getstacksize.c
@@ -0,0 +1,29 @@
+/* pthread_attr_getstacksize.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_getstacksize (const pthread_attr_t *attr,
+			   size_t *stacksize)
+{
+  *stacksize = attr->__stacksize;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr-init.c b/htl/sysdeps/generic/pt-attr-init.c
new file mode 100644
index 0000000..f9eb361
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-init.c
@@ -0,0 +1,29 @@
+/* pthread_attr_init.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_init (pthread_attr_t *attr)
+{
+  *attr = __pthread_default_attr;
+  return 0;
+}
+strong_alias (__pthread_attr_init, pthread_attr_init);
diff --git a/htl/sysdeps/generic/pt-attr-setdetachstate.c b/htl/sysdeps/generic/pt-attr-setdetachstate.c
new file mode 100644
index 0000000..cf3ebea
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setdetachstate.c
@@ -0,0 +1,40 @@
+/* pthread_attr_setdetachstate.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_setdetachstate (pthread_attr_t *attr,
+			     int detachstate)
+{
+  switch (detachstate)
+    {
+    case PTHREAD_CREATE_DETACHED:
+    case PTHREAD_CREATE_JOINABLE:
+      attr->__detachstate = detachstate;
+      break;
+    default:
+      return EINVAL;
+    }
+
+  return 0;
+}
+
+strong_alias (__pthread_attr_setdetachstate, pthread_attr_setdetachstate);
diff --git a/htl/sysdeps/generic/pt-attr-setguardsize.c b/htl/sysdeps/generic/pt-attr-setguardsize.c
new file mode 100644
index 0000000..ab68dba
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setguardsize.c
@@ -0,0 +1,29 @@
+/* pthread_attr_setguardsize.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_setguardsize (pthread_attr_t *attr,
+			   size_t guardsize)
+{
+  attr->__guardsize = guardsize;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr-setinheritsched.c b/htl/sysdeps/generic/pt-attr-setinheritsched.c
new file mode 100644
index 0000000..e4a7368
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setinheritsched.c
@@ -0,0 +1,40 @@
+/* pthread_attr_setinheritsched.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_setinheritsched (pthread_attr_t *attr,
+			      int inheritsched)
+{
+  switch (inheritsched)
+    {
+    case PTHREAD_INHERIT_SCHED:
+    case PTHREAD_EXPLICIT_SCHED:
+      attr->__inheritsched = inheritsched;
+      break;
+    default:
+      return EINVAL;
+    }
+
+  return 0;
+}
+
+strong_alias (__pthread_attr_setinheritsched, pthread_attr_setinheritsched);
diff --git a/htl/sysdeps/generic/pt-attr-setschedparam.c b/htl/sysdeps/generic/pt-attr-setschedparam.c
new file mode 100644
index 0000000..201729e
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setschedparam.c
@@ -0,0 +1,40 @@
+/* pthread_attr_getschedparam.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <sched.h>
+#include <string.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_attr_setschedparam (pthread_attr_t *attr,
+			    const struct sched_param *param)
+{
+  if (memcmp (param, &__pthread_default_attr.__schedparam,
+	      sizeof *param) == 0)
+    {
+      memcpy (&attr->__schedparam, param, sizeof *param);
+      return 0;
+    }
+
+  return ENOTSUP;
+}
+
+strong_alias (__pthread_attr_setschedparam, pthread_attr_setschedparam);
diff --git a/htl/sysdeps/generic/pt-attr-setschedpolicy.c b/htl/sysdeps/generic/pt-attr-setschedpolicy.c
new file mode 100644
index 0000000..070948c
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setschedpolicy.c
@@ -0,0 +1,44 @@
+/* pthread_attr_getschedpolicy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_setschedpolicy (pthread_attr_t *attr,
+			     int policy)
+{
+  switch (policy)
+    {
+    case SCHED_OTHER:
+      attr->__schedpolicy = policy;
+      break;
+
+    case SCHED_FIFO:
+    case SCHED_RR:
+      return ENOTSUP;
+
+    default:
+      return EINVAL;
+    }
+
+  return 0;
+}
+
+strong_alias (__pthread_attr_setschedpolicy, pthread_attr_setschedpolicy);
diff --git a/htl/sysdeps/generic/pt-attr-setscope.c b/htl/sysdeps/generic/pt-attr-setscope.c
new file mode 100644
index 0000000..09c5d84
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setscope.c
@@ -0,0 +1,43 @@
+/* pthread_attr_setscope.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_attr_setscope (pthread_attr_t *attr,
+		       int contentionscope)
+{
+  if (contentionscope == __pthread_default_attr.__contentionscope)
+    {
+      attr->__contentionscope = contentionscope;
+      return 0;
+    }
+
+  switch (contentionscope)
+    {
+    case PTHREAD_SCOPE_PROCESS:
+    case PTHREAD_SCOPE_SYSTEM:
+      return ENOTSUP;
+    default:
+      return EINVAL;
+    }
+}
+
+strong_alias (__pthread_attr_setscope, pthread_attr_setscope);
diff --git a/htl/sysdeps/generic/pt-attr-setstack.c b/htl/sysdeps/generic/pt-attr-setstack.c
new file mode 100644
index 0000000..431d6a4
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setstack.c
@@ -0,0 +1,51 @@
+/* pthread_attr_setstack.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+pthread_attr_setstack (pthread_attr_t *attr,
+		       void *stackaddr,
+		       size_t stacksize)
+{
+  int err;
+  size_t s;
+
+  /* pthread_attr_setstack should always succeed, thus we set the size
+     first as it is more discriminating.  */
+  pthread_attr_getstacksize (attr, &s);
+
+  err = pthread_attr_setstacksize (attr, stacksize);
+  if (err)
+    return err;
+
+  err = pthread_attr_setstackaddr (attr, stackaddr);
+  if (err)
+    {
+      int e = pthread_attr_setstacksize (attr, s);
+      assert_perror (e);
+
+      return err;
+    }
+
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr-setstackaddr.c b/htl/sysdeps/generic/pt-attr-setstackaddr.c
new file mode 100644
index 0000000..2e292e5
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setstackaddr.c
@@ -0,0 +1,29 @@
+/* pthread_attr_setstackaddr.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_setstackaddr (pthread_attr_t *attr,
+			   void *stackaddr)
+{
+  attr->__stackaddr = stackaddr;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr-setstacksize.c b/htl/sysdeps/generic/pt-attr-setstacksize.c
new file mode 100644
index 0000000..da754d7
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr-setstacksize.c
@@ -0,0 +1,30 @@
+/* pthread_attr_setstacksize.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_setstacksize (pthread_attr_t *attr,
+			   size_t stacksize)
+{
+  attr->__stacksize = stacksize;
+
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-attr.c b/htl/sysdeps/generic/pt-attr.c
new file mode 100644
index 0000000..48d8323
--- /dev/null
+++ b/htl/sysdeps/generic/pt-attr.c
@@ -0,0 +1,41 @@
+/* Default attributes.  Generic version.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <sched.h>
+#include <stddef.h>
+#include <limits.h>
+
+#include <pt-internal.h>
+
+const struct __pthread_attr __pthread_default_attr =
+{
+  __schedparam: { __sched_priority: 0 },
+  __stacksize: 0,
+  __stackaddr: NULL,
+#ifdef PAGESIZE
+  __guardsize: PAGESIZE,
+#else
+  __guardsize: 1,
+#endif /* PAGESIZE */
+  __detachstate: PTHREAD_CREATE_JOINABLE,
+  __inheritsched: PTHREAD_EXPLICIT_SCHED,
+  __contentionscope: PTHREAD_SCOPE_SYSTEM,
+  __schedpolicy: SCHED_OTHER
+};
diff --git a/htl/sysdeps/generic/pt-barrier-destroy.c b/htl/sysdeps/generic/pt-barrier-destroy.c
new file mode 100644
index 0000000..01b938b
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrier-destroy.c
@@ -0,0 +1,27 @@
+/* pthread_barrier_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_barrier_destroy (pthread_barrier_t *barrier)
+{
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-barrier-init.c b/htl/sysdeps/generic/pt-barrier-init.c
new file mode 100644
index 0000000..056dd1f
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrier-init.c
@@ -0,0 +1,53 @@
+/* pthread_barrier_init.  Generic version.
+   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <string.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+pthread_barrier_init (pthread_barrier_t *barrier,
+		      const pthread_barrierattr_t *attr,
+		      unsigned count)
+{
+  if (count == 0)
+    return EINVAL;
+
+  memset (barrier, 0, sizeof *barrier);
+
+  barrier->__lock = PTHREAD_SPINLOCK_INITIALIZER;
+  barrier->__pending = count;
+  barrier->__count = count;
+
+  if (! attr
+      || memcmp (attr, &__pthread_default_barrierattr, sizeof (*attr) == 0))
+    /* Use the default attributes.  */
+    return 0;
+
+  /* Non-default attributes.  */
+
+  barrier->__attr = malloc (sizeof *attr);
+  if (! barrier->__attr)
+    return ENOMEM;
+
+  *barrier->__attr = *attr;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-barrier-wait.c b/htl/sysdeps/generic/pt-barrier-wait.c
new file mode 100644
index 0000000..2dd1cc3
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrier-wait.c
@@ -0,0 +1,69 @@
+/* pthread_barrier_wait.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+pthread_barrier_wait (pthread_barrier_t *barrier)
+{
+  __pthread_spin_lock (&barrier->__lock);
+  if (-- barrier->__pending == 0)
+    {
+      barrier->__pending = barrier->__count;
+
+      if (barrier->__count > 1)
+	{
+	  struct __pthread *wakeup;
+	  unsigned n = 0;
+
+	  __pthread_queue_iterate (barrier->__queue, wakeup)
+	    n ++;
+
+	  {
+	    struct __pthread *wakeups[n];
+	    unsigned i = 0;
+
+	    __pthread_dequeuing_iterate (barrier->__queue, wakeup)
+	      wakeups[i ++] = wakeup;
+
+	    barrier->__queue = NULL;
+	    __pthread_spin_unlock (&barrier->__lock);
+
+	    for (i = 0; i < n; i ++)
+	      __pthread_wakeup (wakeups[i]);
+	  }
+	}
+
+      return PTHREAD_BARRIER_SERIAL_THREAD;
+    }
+  else
+    {
+      struct __pthread *self = _pthread_self ();
+
+      /* Add ourselves to the list of waiters.  */
+      __pthread_enqueue (&barrier->__queue, self);
+      __pthread_spin_unlock (&barrier->__lock);
+
+      __pthread_block (self);
+      return 0;
+    }
+}
diff --git a/htl/sysdeps/generic/pt-barrier.c b/htl/sysdeps/generic/pt-barrier.c
new file mode 100644
index 0000000..28a2ef1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrier.c
@@ -0,0 +1,26 @@
+/* Default barrier attributes.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+const struct __pthread_barrierattr __pthread_default_barrierattr =
+{
+  __pshared: PTHREAD_PROCESS_PRIVATE
+};
diff --git a/htl/sysdeps/generic/pt-barrierattr-destroy.c b/htl/sysdeps/generic/pt-barrierattr-destroy.c
new file mode 100644
index 0000000..eb39634
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrierattr-destroy.c
@@ -0,0 +1,27 @@
+/* pthread_barrierattr_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_barrierattr_destroy (pthread_barrierattr_t *attr)
+{
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-barrierattr-getpshared.c b/htl/sysdeps/generic/pt-barrierattr-getpshared.c
new file mode 100644
index 0000000..f87f2ae
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrierattr-getpshared.c
@@ -0,0 +1,29 @@
+/* pthread_barrierattr_getpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_barrierattr_getpshared (const pthread_barrierattr_t *attr,
+				int *pshared)
+{
+  *pshared = attr->__pshared;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-barrierattr-init.c b/htl/sysdeps/generic/pt-barrierattr-init.c
new file mode 100644
index 0000000..45f16cc
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrierattr-init.c
@@ -0,0 +1,28 @@
+/* pthread_barrierattr_init.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_barrierattr_init (pthread_barrierattr_t *attr)
+{
+  *attr = __pthread_default_barrierattr;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-barrierattr-setpshared.c b/htl/sysdeps/generic/pt-barrierattr-setpshared.c
new file mode 100644
index 0000000..ecad630
--- /dev/null
+++ b/htl/sysdeps/generic/pt-barrierattr-setpshared.c
@@ -0,0 +1,39 @@
+/* pthread_barrierattr_setpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_barrierattr_setpshared (pthread_barrierattr_t *attr,
+				int pshared)
+{
+  switch (pshared)
+    {
+    case PTHREAD_PROCESS_PRIVATE:
+      attr->__pshared = pshared;
+      return 0;
+
+    case PTHREAD_PROCESS_SHARED:
+      return ENOTSUP;
+
+    default:
+      return EINVAL;
+    }
+}
diff --git a/htl/sysdeps/generic/pt-cond-brdcast.c b/htl/sysdeps/generic/pt-cond-brdcast.c
new file mode 100644
index 0000000..f2a2987
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond-brdcast.c
@@ -0,0 +1,45 @@
+/* Broadcast a condition.  Generic version.
+   Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Unblock all threads that are blocked on condition variable COND.  */
+int
+__pthread_cond_broadcast (pthread_cond_t *cond)
+{
+  struct __pthread *wakeup;
+
+  __pthread_spin_lock (&cond->__lock);
+  while ((wakeup = cond->__queue))
+    {
+      __pthread_dequeue (wakeup);
+      __pthread_spin_unlock (&cond->__lock);
+      /* Wake it up without spin held, so it may have a chance to really
+        preempt us */
+      __pthread_wakeup (wakeup);
+      __pthread_spin_lock (&cond->__lock);
+    }
+  __pthread_spin_unlock (&cond->__lock);
+
+  return 0;
+}
+
+strong_alias (__pthread_cond_broadcast, pthread_cond_broadcast);
diff --git a/htl/sysdeps/generic/pt-cond-destroy.c b/htl/sysdeps/generic/pt-cond-destroy.c
new file mode 100644
index 0000000..d72ea75
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond-destroy.c
@@ -0,0 +1,29 @@
+/* pthread_cond_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_cond_destroy (pthread_cond_t *cond)
+{
+  return 0;
+}
+
+strong_alias (__pthread_cond_destroy, pthread_cond_destroy);
diff --git a/htl/sysdeps/generic/pt-cond-init.c b/htl/sysdeps/generic/pt-cond-init.c
new file mode 100644
index 0000000..350f2eb
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond-init.c
@@ -0,0 +1,47 @@
+/* pthread_cond_init.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+#include <string.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_cond_init (pthread_cond_t *cond,
+		   const pthread_condattr_t *attr)
+{
+  *cond = (pthread_cond_t) __PTHREAD_COND_INITIALIZER;
+
+  if (! attr
+      || memcmp (attr, &__pthread_default_condattr, sizeof (*attr) == 0))
+    /* Use the default attributes.  */
+    return 0;
+
+  /* Non-default attributes.  */
+
+  cond->__attr = malloc (sizeof *attr);
+  if (! cond->__attr)
+    return ENOMEM;
+
+  *cond->__attr = *attr;
+  return 0;
+}
+
+strong_alias (__pthread_cond_init, pthread_cond_init);
diff --git a/htl/sysdeps/generic/pt-cond-signal.c b/htl/sysdeps/generic/pt-cond-signal.c
new file mode 100644
index 0000000..93f7ac7
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond-signal.c
@@ -0,0 +1,43 @@
+/* Signal a condition.  Generic version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Unblock at least one of the threads that are blocked on condition
+   variable COND.  */
+int
+__pthread_cond_signal (pthread_cond_t *cond)
+{
+  struct __pthread *wakeup;
+
+  __pthread_spin_lock (&cond->__lock);
+  wakeup = cond->__queue;
+  if (wakeup)
+    __pthread_dequeue (wakeup);
+  __pthread_spin_unlock (&cond->__lock);
+
+  if (wakeup)
+    __pthread_wakeup (wakeup);
+
+  return 0;
+}
+
+strong_alias (__pthread_cond_signal, pthread_cond_signal);
diff --git a/htl/sysdeps/generic/pt-cond-timedwait.c b/htl/sysdeps/generic/pt-cond-timedwait.c
new file mode 100644
index 0000000..e44d9ad
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond-timedwait.c
@@ -0,0 +1,178 @@
+/* Wait on a condition.  Generic version.
+   Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+extern int __pthread_cond_timedwait_internal (pthread_cond_t *cond,
+					      pthread_mutex_t *mutex,
+					      const struct timespec *abstime);
+
+int
+__pthread_cond_timedwait (pthread_cond_t *cond,
+			pthread_mutex_t *mutex,
+			const struct timespec *abstime)
+{
+  return __pthread_cond_timedwait_internal (cond, mutex, abstime);
+}
+
+strong_alias (__pthread_cond_timedwait, pthread_cond_timedwait);
+
+struct cancel_ctx
+  {
+    struct __pthread *wakeup;
+    pthread_cond_t *cond;
+  };
+
+static void
+cancel_hook (void *arg)
+{
+  struct cancel_ctx *ctx = arg;
+  struct __pthread *wakeup = ctx->wakeup;
+  pthread_cond_t *cond = ctx->cond;
+  int unblock;
+
+  __pthread_spin_lock (&cond->__lock);
+  /* The thread only needs to be awaken if it's blocking or about to block.
+     If it was already unblocked, it's not queued any more.  */
+  unblock = wakeup->prevp != NULL;
+  if (unblock)
+    __pthread_dequeue (wakeup);
+  __pthread_spin_unlock (&cond->__lock);
+
+  if (unblock)
+    __pthread_wakeup (wakeup);
+}
+
+/* Block on condition variable COND until ABSTIME.  As a GNU
+   extension, if ABSTIME is NULL, then wait forever.  MUTEX should be
+   held by the calling thread.  On return, MUTEX will be held by the
+   calling thread.  */
+int
+__pthread_cond_timedwait_internal (pthread_cond_t *cond,
+				   pthread_mutex_t *mutex,
+				   const struct timespec *abstime)
+{
+  error_t err;
+  int cancelled, oldtype, drain;
+  clockid_t clock_id = __pthread_default_condattr.__clock;
+
+  if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
+    return EINVAL;
+
+  struct __pthread *self = _pthread_self ();
+  struct cancel_ctx ctx;
+  ctx.wakeup= self;
+  ctx.cond = cond;
+
+  /* Test for a pending cancellation request, switch to deferred mode for
+     safer resource handling, and prepare the hook to call in case we're
+     cancelled while blocking.  Once CANCEL_LOCK is released, the cancellation
+     hook can be called by another thread at any time.  Whatever happens,
+     this function must exit with MUTEX locked.
+
+     This function contains inline implementations of pthread_testcancel and
+     pthread_setcanceltype to reduce locking overhead.  */
+  __pthread_mutex_lock (&self->cancel_lock);
+  cancelled = (self->cancel_state == PTHREAD_CANCEL_ENABLE)
+	      && self->cancel_pending;
+
+  if (! cancelled)
+    {
+      self->cancel_hook = cancel_hook;
+      self->cancel_hook_arg = &ctx;
+      oldtype = self->cancel_type;
+
+      if (oldtype != PTHREAD_CANCEL_DEFERRED)
+	self->cancel_type = PTHREAD_CANCEL_DEFERRED;
+
+      /* Add ourselves to the list of waiters.  This is done while setting
+	 the cancellation hook to simplify the cancellation procedure, i.e.
+	 if the thread is queued, it can be cancelled, otherwise it is
+	 already unblocked, progressing on the return path.  */
+      __pthread_spin_lock (&cond->__lock);
+      __pthread_enqueue (&cond->__queue, self);
+      if (cond->__attr)
+	clock_id = cond->__attr->__clock;
+      __pthread_spin_unlock (&cond->__lock);
+    }
+  __pthread_mutex_unlock (&self->cancel_lock);
+
+  if (cancelled)
+    pthread_exit (PTHREAD_CANCELED);
+
+  /* Release MUTEX before blocking.  */
+  __pthread_mutex_unlock (mutex);
+
+  /* Block the thread.  */
+  if (abstime)
+    err = __pthread_timedblock (self, abstime, clock_id);
+  else
+    {
+      err = 0;
+      __pthread_block (self);
+    }
+
+  __pthread_spin_lock (&cond->__lock);
+  if (! self->prevp)
+    {
+      /* Another thread removed us from the list of waiters, which means a
+	 wakeup message has been sent.  It was either consumed while we were
+	 blocking, or queued after we timed out and before we acquired the
+	 condition lock, in which case the message queue must be drained.  */
+      if (! err)
+	drain = 0;
+      else
+	{
+	  assert (err == ETIMEDOUT);
+	  drain = 1;
+	}
+    }
+  else
+    {
+      /* We're still in the list of waiters.  Noone attempted to wake us up,
+	 i.e. we timed out.  */
+      assert (err == ETIMEDOUT);
+      __pthread_dequeue (self);
+      drain = 0;
+    }
+  __pthread_spin_unlock (&cond->__lock);
+
+  if (drain)
+    __pthread_block (self);
+
+  /* We're almost done.  Remove the unblock hook, restore the previous
+     cancellation type, and check for a pending cancellation request.  */
+  __pthread_mutex_lock (&self->cancel_lock);
+  self->cancel_hook = NULL;
+  self->cancel_hook_arg = NULL;
+  self->cancel_type = oldtype;
+  cancelled = (self->cancel_state == PTHREAD_CANCEL_ENABLE)
+	      && self->cancel_pending;
+  __pthread_mutex_unlock (&self->cancel_lock);
+
+  /* Reacquire MUTEX before returning/cancelling.  */
+  __pthread_mutex_lock (mutex);
+
+  if (cancelled)
+    pthread_exit (PTHREAD_CANCELED);
+
+  return err;
+}
diff --git a/htl/sysdeps/generic/pt-cond-wait.c b/htl/sysdeps/generic/pt-cond-wait.c
new file mode 100644
index 0000000..38a2ae6
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond-wait.c
@@ -0,0 +1,39 @@
+/* Wait on a condition.  Generic version.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Implemented in pt-cond-timedwait.c.  */
+extern int __pthread_cond_timedwait_internal (pthread_cond_t *cond,
+					      pthread_mutex_t *mutex,
+					      const struct timespec *abstime);
+
+
+/* Block on condition variable COND.  MUTEX should be held by the
+   calling thread.  On return, MUTEX will be held by the calling
+   thread.  */
+int
+__pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+  return __pthread_cond_timedwait_internal (cond, mutex, 0);
+}
+
+strong_alias (__pthread_cond_wait, pthread_cond_wait);
diff --git a/htl/sysdeps/generic/pt-cond.c b/htl/sysdeps/generic/pt-cond.c
new file mode 100644
index 0000000..05f0520
--- /dev/null
+++ b/htl/sysdeps/generic/pt-cond.c
@@ -0,0 +1,29 @@
+/* Default condition attributes.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <time.h>
+
+#include <pt-internal.h>
+
+const struct __pthread_condattr __pthread_default_condattr =
+{
+  __pshared: PTHREAD_PROCESS_PRIVATE,
+  __clock: CLOCK_REALTIME
+};
diff --git a/htl/sysdeps/generic/pt-condattr-destroy.c b/htl/sysdeps/generic/pt-condattr-destroy.c
new file mode 100644
index 0000000..9fd55b1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-condattr-destroy.c
@@ -0,0 +1,29 @@
+/* pthread_condattr_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_condattr_destroy (pthread_condattr_t *cond)
+{
+  return 0;
+}
+
+strong_alias (__pthread_condattr_destroy, pthread_condattr_destroy);
diff --git a/htl/sysdeps/generic/pt-condattr-getclock.c b/htl/sysdeps/generic/pt-condattr-getclock.c
new file mode 100644
index 0000000..4885b13
--- /dev/null
+++ b/htl/sysdeps/generic/pt-condattr-getclock.c
@@ -0,0 +1,31 @@
+/* pthread_condattr_getclock.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <time.h>
+
+#include <pt-internal.h>
+
+int
+pthread_condattr_getclock (const pthread_condattr_t *attr,
+			   clockid_t *clock)
+{
+  *clock = attr->__clock;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-condattr-getpshared.c b/htl/sysdeps/generic/pt-condattr-getpshared.c
new file mode 100644
index 0000000..a27dbc4
--- /dev/null
+++ b/htl/sysdeps/generic/pt-condattr-getpshared.c
@@ -0,0 +1,29 @@
+/* pthread_condattr_getpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_condattr_getpshared (const pthread_condattr_t *attr,
+			     int *pshared)
+{
+  *pshared = attr->__pshared;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-condattr-init.c b/htl/sysdeps/generic/pt-condattr-init.c
new file mode 100644
index 0000000..8570fd1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-condattr-init.c
@@ -0,0 +1,30 @@
+/* pthread_condattr_init.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_condattr_init (pthread_condattr_t *attr)
+{
+  *attr = __pthread_default_condattr;
+  return 0;
+}
+
+strong_alias (__pthread_condattr_init, pthread_condattr_init);
diff --git a/htl/sysdeps/generic/pt-condattr-setclock.c b/htl/sysdeps/generic/pt-condattr-setclock.c
new file mode 100644
index 0000000..ad28834
--- /dev/null
+++ b/htl/sysdeps/generic/pt-condattr-setclock.c
@@ -0,0 +1,52 @@
+/* pthread_condattr_setclock.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t clock)
+{
+  /* Only a few clocks are allowed.  CLOCK_REALTIME is always allowed.
+     CLOCK_MONOTONIC only if the kernel has the necessary support.  */
+  if (clock == CLOCK_MONOTONIC)
+    {
+      /* Check whether the clock is available.  */
+      static int avail;
+
+      if (avail == 0)
+	{
+	  struct timespec ts;
+	  int res;
+
+	  res = clock_gettime (CLOCK_MONOTONIC, &ts);
+	  avail = res < 0 ? -1 : 1;
+	}
+
+      if (avail < 0)
+	/* Not available.  */
+	return EINVAL;
+    }
+  else if (clock != CLOCK_REALTIME)
+    return EINVAL;
+
+  attr->__clock = clock;
+
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-condattr-setpshared.c b/htl/sysdeps/generic/pt-condattr-setpshared.c
new file mode 100644
index 0000000..0316b4d
--- /dev/null
+++ b/htl/sysdeps/generic/pt-condattr-setpshared.c
@@ -0,0 +1,39 @@
+/* pthread_condattr_setpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_condattr_setpshared (pthread_condattr_t *attr,
+			     int pshared)
+{
+  switch (pshared)
+    {
+    case PTHREAD_PROCESS_PRIVATE:
+      attr->__pshared = pshared;
+      return 0;
+
+    case PTHREAD_PROCESS_SHARED:
+      return ENOTSUP;
+
+    default:
+      return EINVAL;
+    }
+}
diff --git a/htl/sysdeps/generic/pt-destroy-specific.c b/htl/sysdeps/generic/pt-destroy-specific.c
new file mode 100644
index 0000000..642c61c
--- /dev/null
+++ b/htl/sysdeps/generic/pt-destroy-specific.c
@@ -0,0 +1,77 @@
+/* __pthread_destory_specific.  Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <pt-internal.h>
+
+void
+__pthread_destroy_specific (struct __pthread *thread)
+{
+  int i;
+  int seen_one;
+
+  /* Check if there is any thread specific data.  */
+  if (! thread->thread_specifics)
+    return;
+
+  __pthread_key_lock_ready ();
+
+  /* Iterate and call the destructors on any thread specific data.  */
+  for (;;)
+    {
+      seen_one = 0;
+
+      __pthread_mutex_lock (&__pthread_key_lock);
+
+      for (i = 0; i < __pthread_key_count && i < thread->thread_specifics_size; i ++)
+	{
+	  void *value;
+
+	  if (__pthread_key_destructors[i] == PTHREAD_KEY_INVALID)
+	    continue;
+
+	  value = thread->thread_specifics[i];
+	  if (value)
+	    {
+	      thread->thread_specifics[i] = 0;
+
+	      if (__pthread_key_destructors[i])
+		{
+		  seen_one = 1;
+		  __pthread_key_destructors[i] (value);
+		}
+	    }
+	}
+
+      __pthread_mutex_unlock (&__pthread_key_lock);
+
+      if (! seen_one)
+	break;
+
+      /* This may take a very long time.  Let those blocking on
+	 pthread_key_create or pthread_key_delete make progress.  */
+      sched_yield ();
+    }
+
+  free (thread->thread_specifics);
+  thread->thread_specifics = 0;
+  thread->thread_specifics_size = 0;
+}
diff --git a/htl/sysdeps/generic/pt-equal.c b/htl/sysdeps/generic/pt-equal.c
new file mode 100644
index 0000000..72fc7e6
--- /dev/null
+++ b/htl/sysdeps/generic/pt-equal.c
@@ -0,0 +1,31 @@
+/* Default attributes.  Generic version.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+/* Return true if __T1 and __T2 both name the same thread.  Otherwise,
+   false.  */
+int
+__pthread_equal (pthread_t __t1, pthread_t __t2)
+{
+  return __t1 == __t2;
+}
+
+strong_alias (__pthread_equal, pthread_equal);
diff --git a/htl/sysdeps/generic/pt-getconcurrency.c b/htl/sysdeps/generic/pt-getconcurrency.c
new file mode 100644
index 0000000..b55c8ee
--- /dev/null
+++ b/htl/sysdeps/generic/pt-getconcurrency.c
@@ -0,0 +1,27 @@
+/* Get the current level of desired concurrency.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_getconcurrency (void)
+{
+  return __pthread_concurrency;
+}
diff --git a/htl/sysdeps/generic/pt-getcpuclockid.c b/htl/sysdeps/generic/pt-getcpuclockid.c
new file mode 100644
index 0000000..03868d3
--- /dev/null
+++ b/htl/sysdeps/generic/pt-getcpuclockid.c
@@ -0,0 +1,35 @@
+/* Return a thread's cpu clockid.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <time.h>
+
+#include <pt-internal.h>
+
+int
+pthread_getcpuclockid (pthread_t thread, clockid_t *clock)
+{
+#ifdef CLOCK_THREAD_CPUTIME_ID
+  *clock = CLOCK_THREAD_CPUTIME_ID;
+  return 0;
+#else
+  return ENOSYS;
+stub_warning (pthread_getcpuclockid)
+#endif
+}
diff --git a/htl/sysdeps/generic/pt-getschedparam.c b/htl/sysdeps/generic/pt-getschedparam.c
new file mode 100644
index 0000000..5b20421
--- /dev/null
+++ b/htl/sysdeps/generic/pt-getschedparam.c
@@ -0,0 +1,32 @@
+/* Get the scheduling parameters for a thread.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_getschedparam (pthread_t thread, int *policy,
+		       struct sched_param *param)
+{
+  *policy = SCHED_OTHER;
+  param->__sched_priority = 0;
+  return 0;
+}
+
+strong_alias (__pthread_getschedparam, pthread_getschedparam);
diff --git a/htl/sysdeps/generic/pt-getspecific.c b/htl/sysdeps/generic/pt-getspecific.c
new file mode 100644
index 0000000..1f49c03
--- /dev/null
+++ b/htl/sysdeps/generic/pt-getspecific.c
@@ -0,0 +1,39 @@
+/* pthread_getspecific.  Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+void *
+__pthread_getspecific (pthread_key_t key)
+{
+  struct __pthread *self;
+
+  if (key < 0 || key >= __pthread_key_count
+      || __pthread_key_destructors[key] == PTHREAD_KEY_INVALID)
+    return NULL;
+
+  self = _pthread_self ();
+  if (key >= self->thread_specifics_size)
+    return 0;
+
+  return self->thread_specifics[key];
+}
+strong_alias (__pthread_getspecific, pthread_getspecific);
diff --git a/htl/sysdeps/generic/pt-init-specific.c b/htl/sysdeps/generic/pt-init-specific.c
new file mode 100644
index 0000000..78958cb
--- /dev/null
+++ b/htl/sysdeps/generic/pt-init-specific.c
@@ -0,0 +1,31 @@
+/* __pthread_init_specific.  Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <pt-internal.h>
+
+error_t
+__pthread_init_specific (struct __pthread *thread)
+{
+  thread->thread_specifics = 0;
+  thread->thread_specifics_size = 0;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-key-create.c b/htl/sysdeps/generic/pt-key-create.c
new file mode 100644
index 0000000..f26ec36
--- /dev/null
+++ b/htl/sysdeps/generic/pt-key-create.c
@@ -0,0 +1,110 @@
+/* pthread_key_create.  Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+pthread_mutex_t __pthread_key_lock;
+
+void (**__pthread_key_destructors) (void *arg);
+int __pthread_key_size;
+int __pthread_key_count;
+int __pthread_key_invalid_count;
+
+int
+__pthread_key_create (pthread_key_t *key, void (*destructor) (void *))
+{
+  /* Where to look for the next key slot.  */
+  static int index;
+
+  __pthread_key_lock_ready ();
+
+  __pthread_mutex_lock (&__pthread_key_lock);
+
+ do_search:
+  /* Use the search hint and try to find a free slot.  */
+  for (; index < __pthread_key_count
+	 && __pthread_key_destructors[index] != PTHREAD_KEY_INVALID;
+       index ++)
+    ;
+
+  /* See if we actually found a free element.  */
+  if (index < __pthread_key_count)
+    {
+      assert (__pthread_key_destructors[index] == PTHREAD_KEY_INVALID);
+      assert (__pthread_key_invalid_count > 0);
+
+      __pthread_key_invalid_count --;
+      __pthread_key_destructors[index] = destructor;
+      *key = index ++;
+
+      __pthread_mutex_unlock (&__pthread_key_lock);
+      return 0;
+    }
+
+  assert (index == __pthread_key_count);
+
+  /* No space at the end.  */
+  if (__pthread_key_size == __pthread_key_count)
+    {
+      /* See if it is worth looking for a free element.  */
+      if (__pthread_key_invalid_count > 4
+	  && __pthread_key_invalid_count > __pthread_key_size / 8)
+	{
+	  index = 0;
+	  goto do_search;
+	}
+
+
+      /* Resize the array.  */
+      {
+	void *t;
+	int newsize;
+
+	if (__pthread_key_size == 0)
+	  newsize = 8;
+	else
+	  newsize = __pthread_key_size * 2;
+
+	t = realloc (__pthread_key_destructors,
+		     newsize * sizeof (*__pthread_key_destructors));
+	if (! t)
+	  {
+	    __pthread_mutex_unlock (&__pthread_key_lock);
+	    return ENOMEM;
+	  }
+
+	__pthread_key_size = newsize;
+	__pthread_key_destructors = t;
+      }
+    }
+
+  __pthread_key_destructors[index] = destructor;
+  *key = index;
+
+  index ++;
+  __pthread_key_count ++;
+
+  __pthread_mutex_unlock (&__pthread_key_lock);
+  return 0;
+}
+strong_alias (__pthread_key_create, pthread_key_create)
diff --git a/htl/sysdeps/generic/pt-key-delete.c b/htl/sysdeps/generic/pt-key-delete.c
new file mode 100644
index 0000000..499e9f3
--- /dev/null
+++ b/htl/sysdeps/generic/pt-key-delete.c
@@ -0,0 +1,64 @@
+/* pthread_key_delete.  Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+int
+pthread_key_delete (pthread_key_t key)
+{
+  error_t err = 0;
+
+  __pthread_key_lock_ready ();
+
+  __pthread_mutex_lock (&__pthread_key_lock);
+
+  if (key < 0 || key >= __pthread_key_count
+      || __pthread_key_destructors[key] == PTHREAD_KEY_INVALID)
+    err = EINVAL;
+  else
+    {
+      int i;
+
+      __pthread_key_destructors[key] = PTHREAD_KEY_INVALID;
+      __pthread_key_invalid_count ++;
+
+      __pthread_rwlock_rdlock (&__pthread_threads_lock);
+      for (i = 0; i < __pthread_num_threads; ++i)
+	{
+	  struct __pthread *t;
+
+	  t = __pthread_threads[i];
+
+	  if (t == NULL)
+	    continue;
+
+	  /* Just remove the key, no need to care whether it was
+	     already there. */
+	  if (key < t->thread_specifics_size)
+	    t->thread_specifics[key] = 0;
+	}
+      __pthread_rwlock_unlock (&__pthread_threads_lock);
+    }
+
+  __pthread_mutex_unlock (&__pthread_key_lock);
+
+  return err;
+}
diff --git a/htl/sysdeps/generic/pt-key.h b/htl/sysdeps/generic/pt-key.h
new file mode 100644
index 0000000..759ab68
--- /dev/null
+++ b/htl/sysdeps/generic/pt-key.h
@@ -0,0 +1,77 @@
+/* pthread_key internal declatations for the Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <libc-lockP.h>
+
+#define PTHREAD_KEY_MEMBERS \
+  void **thread_specifics;		/* This is only resized by the thread, and always growing */ \
+  unsigned thread_specifics_size;	/* Number of entries in thread_specifics */
+
+#define PTHREAD_KEY_INVALID (void *) (-1)
+
+
+/* __PTHREAD_KEY_DESTRUCTORS is an array of destructors with
+   __PTHREAD_KEY_SIZE elements.  If an element with index less than
+   __PTHREAD_KEY_COUNT is invalid, it shall contain the value
+   PTHREAD_KEY_INVALID which shall be distinct from NULL.
+
+   Normally, we just add new keys to the end of the array and realloc
+   it as necessary.  The pthread_key_create routine may decide to
+   rescan the array if __PTHREAD_KEY_FREE is large.  */
+extern void (**__pthread_key_destructors) (void *arg);
+extern int __pthread_key_size;
+extern int __pthread_key_count;
+/* Number of invalid elements in the array.  Does not include elements
+   for which memory has been allocated but which have not yet been
+   used (i.e. those elements with indexes greater than
+   __PTHREAD_KEY_COUNT).  */
+extern int __pthread_key_invalid_count;
+
+/* Protects the above variables.  This must be a recursive lock: the
+   destructors may call pthread_key_delete.  */
+extern pthread_mutex_t __pthread_key_lock;
+
+#include <assert.h>
+
+static inline void
+__pthread_key_lock_ready (void)
+{
+  static pthread_once_t o = PTHREAD_ONCE_INIT;
+
+  void do_init (void)
+    {
+      int err;
+      pthread_mutexattr_t attr;
+
+      err = __pthread_mutexattr_init (&attr);
+      assert_perror (err);
+
+      err = __pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
+      assert_perror (err);
+
+      err = _pthread_mutex_init (&__pthread_key_lock, &attr);
+      assert_perror (err);
+
+      err = __pthread_mutexattr_destroy (&attr);
+      assert_perror (err);
+    }
+
+  __pthread_once (&o, do_init);
+}
diff --git a/htl/sysdeps/generic/pt-kill.c b/htl/sysdeps/generic/pt-kill.c
new file mode 100644
index 0000000..fc83f93
--- /dev/null
+++ b/htl/sysdeps/generic/pt-kill.c
@@ -0,0 +1,33 @@
+/* pthread-kill.c - Generic pthread-kill implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthreadP.h>
+#include "sig-internal.h"
+
+int
+__pthread_kill (pthread_t tid, int signo)
+{
+  siginfo_t si;
+  memset (&si, 0, sizeof (si));
+  si.si_signo = signo;
+
+  return pthread_kill_siginfo_np (tid, si);
+}
+strong_alias (__pthread_kill, pthread_kill)
diff --git a/htl/sysdeps/generic/pt-mutex-destroy.c b/htl/sysdeps/generic/pt-mutex-destroy.c
new file mode 100644
index 0000000..3a3cb89
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-destroy.c
@@ -0,0 +1,39 @@
+/* Destroy a mutex.  Generic version.
+   Copyright (C) 2000, 2002, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+_pthread_mutex_destroy (pthread_mutex_t *mutex)
+{
+  if (mutex->__attr == __PTHREAD_ERRORCHECK_MUTEXATTR
+   || mutex->__attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    /* Static attributes.  */
+    ;
+  else
+    free (mutex->__attr);
+
+  return 0;
+}
+
+strong_alias (_pthread_mutex_destroy, pthread_mutex_destroy);
diff --git a/htl/sysdeps/generic/pt-mutex-getprioceiling.c b/htl/sysdeps/generic/pt-mutex-getprioceiling.c
new file mode 100644
index 0000000..ac886a8
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-getprioceiling.c
@@ -0,0 +1,30 @@
+/* Get a mutex' priority ceiling.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutex_getprioceiling (const pthread_mutex_t *mutex,
+			      int *prioceiling)
+{
+  return ENOSYS;
+}
+
+stub_warning (pthread_mutex_getprioceiling)
diff --git a/htl/sysdeps/generic/pt-mutex-init.c b/htl/sysdeps/generic/pt-mutex-init.c
new file mode 100644
index 0000000..7f21511
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-init.c
@@ -0,0 +1,50 @@
+/* Initialize a mutex.  Generic version.
+   Copyright (C) 2000, 2002, 2005, 2006, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+_pthread_mutex_init (pthread_mutex_t *mutex,
+		     const pthread_mutexattr_t *attr)
+{
+  *mutex = (pthread_mutex_t) __PTHREAD_MUTEX_INITIALIZER;
+
+  if (! attr
+      || memcmp (attr, &__pthread_default_mutexattr, sizeof (*attr) == 0))
+    /* The default attributes.  */
+    return 0;
+
+  if (! mutex->__attr
+      || mutex->__attr == __PTHREAD_ERRORCHECK_MUTEXATTR
+      || mutex->__attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    mutex->__attr = malloc (sizeof *attr);
+
+  if (! mutex->__attr)
+    return ENOMEM;
+
+  *mutex->__attr = *attr;
+  return 0;
+}
+
+strong_alias (_pthread_mutex_init, pthread_mutex_init);
diff --git a/htl/sysdeps/generic/pt-mutex-lock.c b/htl/sysdeps/generic/pt-mutex-lock.c
new file mode 100644
index 0000000..528e593
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-lock.c
@@ -0,0 +1,37 @@
+/* Lock a mutex.  Generic version.
+   Copyright (C) 2000, 2002, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+/* Implemented in pt-mutex-timedlock.c.  */
+extern int __pthread_mutex_timedlock_internal (struct __pthread_mutex *mutex,
+					       const struct timespec *abstime);
+
+/* Lock MUTEX, block if we can't get it.  */
+int
+__pthread_mutex_lock (struct __pthread_mutex *mutex)
+{
+  return __pthread_mutex_timedlock_internal (mutex, 0);
+}
+
+strong_alias (__pthread_mutex_lock, _pthread_mutex_lock);
+strong_alias (__pthread_mutex_lock, pthread_mutex_lock);
diff --git a/htl/sysdeps/generic/pt-mutex-setprioceiling.c b/htl/sysdeps/generic/pt-mutex-setprioceiling.c
new file mode 100644
index 0000000..1358b37
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-setprioceiling.c
@@ -0,0 +1,30 @@
+/* Set a mutex' priority ceiling.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutex_setprioceiling (pthread_mutex_t *mutex, int prio,
+			      int *oldprio)
+{
+  return ENOSYS;
+}
+
+stub_warning (pthread_mutex_setprioceiling)
diff --git a/htl/sysdeps/generic/pt-mutex-timedlock.c b/htl/sysdeps/generic/pt-mutex-timedlock.c
new file mode 100644
index 0000000..0f8d447
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-timedlock.c
@@ -0,0 +1,196 @@
+/* Lock a mutex with a timeout.  Generic version.
+   Copyright (C) 2000, 2002, 2005, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+#define LOSE do { * (int *) 0 = 0; } while (1)
+
+/* Try to lock MUTEX, block until *ABSTIME if it is already held.  As
+   a GNU extension, if TIMESPEC is NULL then wait forever.  */
+int
+__pthread_mutex_timedlock_internal (struct __pthread_mutex *mutex,
+				    const struct timespec *abstime)
+{
+  error_t err;
+  int drain;
+  struct __pthread *self;
+  const struct __pthread_mutexattr *attr = mutex->__attr;
+
+  if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR)
+    attr = &__pthread_errorcheck_mutexattr;
+  if (attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    attr = &__pthread_recursive_mutexattr;
+
+  __pthread_spin_lock (&mutex->__lock);
+  if (__pthread_spin_trylock (&mutex->__held) == 0)
+    /* Successfully acquired the lock.  */
+    {
+#ifdef ALWAYS_TRACK_MUTEX_OWNER
+#ifndef NDEBUG
+      self = _pthread_self ();
+      if (self)
+	/* The main thread may take a lock before the library is fully
+	   initialized, in particular, before the main thread has a
+	   TCB.  */
+	{
+	  assert (! mutex->__owner);
+	  mutex->__owner = _pthread_self ();
+	}
+#endif
+#endif
+
+      if (attr)
+	switch (attr->__mutex_type)
+	  {
+	  case PTHREAD_MUTEX_NORMAL:
+	    break;
+
+	  case PTHREAD_MUTEX_RECURSIVE:
+	    mutex->__locks = 1;
+	  case PTHREAD_MUTEX_ERRORCHECK:
+	    mutex->__owner = _pthread_self ();
+	    break;
+
+	  default:
+	    LOSE;
+	  }
+
+      __pthread_spin_unlock (&mutex->__lock);
+      return 0;
+    }
+
+  /* The lock is busy.  */
+
+  self = _pthread_self ();
+  assert (self);
+
+  if (! attr || attr->__mutex_type == PTHREAD_MUTEX_NORMAL)
+    {
+#if defined(ALWAYS_TRACK_MUTEX_OWNER)
+      assert (mutex->__owner != self);
+#endif
+    }
+  else
+    {
+      switch (attr->__mutex_type)
+	{
+	case PTHREAD_MUTEX_ERRORCHECK:
+	  if (mutex->__owner == self)
+	    {
+	      __pthread_spin_unlock (&mutex->__lock);
+	      return EDEADLK;
+	    }
+	  break;
+
+	case PTHREAD_MUTEX_RECURSIVE:
+	  if (mutex->__owner == self)
+	    {
+	      mutex->__locks ++;
+	      __pthread_spin_unlock (&mutex->__lock);
+	      return 0;
+	    }
+	  break;
+
+	default:
+	  LOSE;
+	}
+    }
+
+#if !defined(ALWAYS_TRACK_MUTEX_OWNER)
+  if (attr && attr->__mutex_type != PTHREAD_MUTEX_NORMAL)
+#endif
+    assert (mutex->__owner);
+
+  if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
+    return EINVAL;
+
+  /* Add ourselves to the queue.  */
+  __pthread_enqueue (&mutex->__queue, self);
+  __pthread_spin_unlock (&mutex->__lock);
+
+  /* Block the thread.  */
+  if (abstime)
+    err = __pthread_timedblock (self, abstime, CLOCK_REALTIME);
+  else
+    {
+      err = 0;
+      __pthread_block (self);
+    }
+
+  __pthread_spin_lock (&mutex->__lock);
+  if (! self->prevp)
+    /* Another thread removed us from the queue, which means a wakeup message
+       has been sent.  It was either consumed while we were blocking, or
+       queued after we timed out and before we acquired the mutex lock, in
+       which case the message queue must be drained.  */
+    drain = err ? 1 : 0;
+  else
+    {
+      /* We're still in the queue.  Noone attempted to wake us up, i.e. we
+	 timed out.  */
+      __pthread_dequeue (self);
+      drain = 0;
+    }
+  __pthread_spin_unlock (&mutex->__lock);
+
+  if (drain)
+    __pthread_block (self);
+
+  if (err)
+    {
+      assert (err == ETIMEDOUT);
+      return err;
+    }
+
+#if !defined(ALWAYS_TRACK_MUTEX_OWNER)
+  if (attr && attr->__mutex_type != PTHREAD_MUTEX_NORMAL)
+#endif
+    {
+      assert (mutex->__owner == self);
+    }
+
+  if (attr)
+    switch (attr->__mutex_type)
+      {
+      case PTHREAD_MUTEX_NORMAL:
+	break;
+
+      case PTHREAD_MUTEX_RECURSIVE:
+	assert (mutex->__locks == 0);
+	mutex->__locks = 1;
+      case PTHREAD_MUTEX_ERRORCHECK:
+	mutex->__owner = self;
+	break;
+
+      default:
+	LOSE;
+      }
+
+  return 0;
+}
+
+int
+pthread_mutex_timedlock (struct __pthread_mutex *mutex,
+			 const struct timespec *abstime)
+{
+  return __pthread_mutex_timedlock_internal (mutex, abstime);
+}
diff --git a/htl/sysdeps/generic/pt-mutex-transfer-np.c b/htl/sysdeps/generic/pt-mutex-transfer-np.c
new file mode 100644
index 0000000..21fc040
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-transfer-np.c
@@ -0,0 +1,66 @@
+/* Transfer ownership of a mutex.  Generic version.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_mutex_transfer_np (struct __pthread_mutex *mutex, pthread_t tid)
+{
+  assert (mutex->__owner == _pthread_self ());
+
+  struct __pthread *thread = __pthread_getid (tid);
+  const struct __pthread_mutexattr *attr = mutex->__attr;
+
+  if (! thread)
+    return ESRCH;
+
+  if (thread == _pthread_self ())
+    return 0;
+
+  if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR)
+    attr = &__pthread_errorcheck_mutexattr;
+  if (attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    attr = &__pthread_recursive_mutexattr;
+
+  if (attr && attr->__mutex_type == PTHREAD_MUTEX_ERRORCHECK)
+    {
+
+      if (mutex->__owner != _pthread_self ())
+	return EPERM;
+
+      mutex->__owner = thread;
+    }
+
+#ifndef NDEBUG
+# if !defined(ALWAYS_TRACK_MUTEX_OWNER)
+  if (attr && attr->__mutex_type != PTHREAD_MUTEX_NORMAL)
+# endif
+    {
+      mutex->__owner = thread;
+    }
+#endif
+
+  return 0;
+}
+
+strong_alias (__pthread_mutex_transfer_np, pthread_mutex_transfer_np)
diff --git a/htl/sysdeps/generic/pt-mutex-trylock.c b/htl/sysdeps/generic/pt-mutex-trylock.c
new file mode 100644
index 0000000..0d5ce7d
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-trylock.c
@@ -0,0 +1,112 @@
+/* Try to Lock a mutex.  Generic version.
+   Copyright (C) 2002, 2005, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+#define LOSE do { * (int *) 0 = 0; } while (1)
+
+/* Lock MUTEX, return EBUSY if we can't get it.  */
+int
+__pthread_mutex_trylock (struct __pthread_mutex *mutex)
+{
+  int err;
+  struct __pthread *self;
+  const struct __pthread_mutexattr *attr = mutex->__attr;
+
+  if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR)
+    attr = &__pthread_errorcheck_mutexattr;
+  if (attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    attr = &__pthread_recursive_mutexattr;
+
+  __pthread_spin_lock (&mutex->__lock);
+  if (__pthread_spin_trylock (&mutex->__held) == 0)
+    /* Acquired the lock.  */
+    {
+#if defined(ALWAYS_TRACK_MUTEX_OWNER)
+#ifndef NDEBUG
+      self = _pthread_self ();
+      if (self)
+	/* The main thread may take a lock before the library is fully
+	   initialized, in particular, before the main thread has a
+	   TCB.  */
+	{
+	  assert (! mutex->__owner);
+	  mutex->__owner = _pthread_self ();
+	}
+#endif
+#endif
+
+      if (attr)
+	switch (attr->__mutex_type)
+	  {
+	  case PTHREAD_MUTEX_NORMAL:
+	    break;
+
+	  case PTHREAD_MUTEX_RECURSIVE:
+	    mutex->__locks = 1;
+	  case PTHREAD_MUTEX_ERRORCHECK:
+	    mutex->__owner = _pthread_self ();
+	    break;
+
+	  default:
+	    LOSE;
+	  }
+
+      __pthread_spin_unlock (&mutex->__lock);
+      return 0;
+    }
+
+  err = EBUSY;
+
+  if (attr)
+    {
+      self = _pthread_self ();
+      switch (attr->__mutex_type)
+	{
+	case PTHREAD_MUTEX_NORMAL:
+	  break;
+
+	case PTHREAD_MUTEX_ERRORCHECK:
+	  /* We could check if MUTEX->OWNER is SELF, however, POSIX
+	     does not permit pthread_mutex_trylock to return EDEADLK
+	     instead of EBUSY, only pthread_mutex_lock.  */
+	  break;
+
+	case PTHREAD_MUTEX_RECURSIVE:
+	  if (mutex->__owner == self)
+	    {
+	      mutex->__locks ++;
+	      err = 0;
+	    }
+	  break;
+
+	default:
+	  LOSE;
+	}
+    }
+
+  __pthread_spin_unlock (&mutex->__lock);
+
+  return err;
+}
+
+strong_alias (__pthread_mutex_trylock, _pthread_mutex_trylock);
+strong_alias (__pthread_mutex_trylock, pthread_mutex_trylock);
diff --git a/htl/sysdeps/generic/pt-mutex-unlock.c b/htl/sysdeps/generic/pt-mutex-unlock.c
new file mode 100644
index 0000000..08f5975
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutex-unlock.c
@@ -0,0 +1,108 @@
+/* Unlock a mutex.  Generic version.
+   Copyright (C) 2000, 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+#define LOSE do { * (int *) 0 = 0; } while (1)
+
+/* Unlock MUTEX, rescheduling a waiting thread.  */
+int
+__pthread_mutex_unlock (pthread_mutex_t *mutex)
+{
+  struct __pthread *wakeup;
+  const struct __pthread_mutexattr *attr = mutex->__attr;
+
+  if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR)
+    attr = &__pthread_errorcheck_mutexattr;
+  if (attr == __PTHREAD_RECURSIVE_MUTEXATTR)
+    attr = &__pthread_recursive_mutexattr;
+
+  __pthread_spin_lock (&mutex->__lock);
+
+  if (! attr || attr->__mutex_type == PTHREAD_MUTEX_NORMAL)
+    {
+#if defined(ALWAYS_TRACK_MUTEX_OWNER)
+# ifndef NDEBUG
+      if (_pthread_self ())
+	{
+	  assert (mutex->__owner);
+	  assert (mutex->__owner == _pthread_self ());
+	  mutex->__owner = NULL;
+	}
+# endif
+#endif
+    }
+  else
+    switch (attr->__mutex_type)
+      {
+      case PTHREAD_MUTEX_ERRORCHECK:
+      case PTHREAD_MUTEX_RECURSIVE:
+	if (mutex->__owner != _pthread_self ())
+	  {
+	    __pthread_spin_unlock (&mutex->__lock);
+	    return EPERM;
+	  }
+
+	if (attr->__mutex_type == PTHREAD_MUTEX_RECURSIVE)
+	  if (--mutex->__locks > 0)
+	    {
+	      __pthread_spin_unlock (&mutex->__lock);
+	      return 0;
+	    }
+
+	mutex->__owner = 0;
+	break;
+
+      default:
+	LOSE;
+      }
+
+
+  if (mutex->__queue == NULL)
+    {
+      __pthread_spin_unlock (&mutex->__held);
+      __pthread_spin_unlock (&mutex->__lock);
+      return 0;
+    }
+
+  wakeup = mutex->__queue;
+  __pthread_dequeue (wakeup);
+
+#ifndef NDEBUG
+# if !defined (ALWAYS_TRACK_MUTEX_OWNER)
+  if (attr && attr->__mutex_type != PTHREAD_MUTEX_NORMAL)
+# endif
+    {
+      mutex->__owner = wakeup;
+    }
+#endif
+
+  /* We do not unlock MUTEX->held: we are transferring the ownership
+     to the thread that we are waking up.  */
+
+  __pthread_spin_unlock (&mutex->__lock);
+  __pthread_wakeup (wakeup);
+
+  return 0;
+}
+
+strong_alias (__pthread_mutex_unlock, _pthread_mutex_unlock);
+strong_alias (__pthread_mutex_unlock, pthread_mutex_unlock);
diff --git a/htl/sysdeps/generic/pt-mutexattr-destroy.c b/htl/sysdeps/generic/pt-mutexattr-destroy.c
new file mode 100644
index 0000000..fc0479b
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-destroy.c
@@ -0,0 +1,28 @@
+/* pthread_mutexattr_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_mutexattr_destroy (pthread_mutexattr_t *attr)
+{
+  return 0;
+}
+weak_alias (__pthread_mutexattr_destroy, pthread_mutexattr_destroy)
diff --git a/htl/sysdeps/generic/pt-mutexattr-getprioceiling.c b/htl/sysdeps/generic/pt-mutexattr-getprioceiling.c
new file mode 100644
index 0000000..4865676
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-getprioceiling.c
@@ -0,0 +1,30 @@
+/* pthread_mutexattr_getprioceiling.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *attr,
+				  int *prioceiling)
+{
+  return ENOSYS;
+}
+
+stub_warning (pthread_mutexattr_getprioceiling)
diff --git a/htl/sysdeps/generic/pt-mutexattr-getprotocol.c b/htl/sysdeps/generic/pt-mutexattr-getprotocol.c
new file mode 100644
index 0000000..c53d755
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-getprotocol.c
@@ -0,0 +1,29 @@
+/* pthread_mutexattr_getprotocol.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_getprotocol (const pthread_mutexattr_t *attr,
+			       int *protocol)
+{
+  *protocol = attr->__protocol;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-mutexattr-getpshared.c b/htl/sysdeps/generic/pt-mutexattr-getpshared.c
new file mode 100644
index 0000000..494b2de
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-getpshared.c
@@ -0,0 +1,29 @@
+/* pthread_mutexattr_getpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_getpshared (const pthread_mutexattr_t *attr,
+			      int *pshared)
+{
+  *pshared = attr->__pshared;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-mutexattr-gettype.c b/htl/sysdeps/generic/pt-mutexattr-gettype.c
new file mode 100644
index 0000000..28fee9a
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-gettype.c
@@ -0,0 +1,28 @@
+/* pthread_mutexattr_gettype.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_gettype (const pthread_mutexattr_t *attr, int *type)
+{
+  *type = attr->__mutex_type;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-mutexattr-init.c b/htl/sysdeps/generic/pt-mutexattr-init.c
new file mode 100644
index 0000000..82f5da2
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-init.c
@@ -0,0 +1,29 @@
+/* pthread_mutexattr_init.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_mutexattr_init (pthread_mutexattr_t *attr)
+{
+  *attr = __pthread_default_mutexattr;
+  return 0;
+}
+weak_alias (__pthread_mutexattr_init, pthread_mutexattr_init)
diff --git a/htl/sysdeps/generic/pt-mutexattr-setprioceiling.c b/htl/sysdeps/generic/pt-mutexattr-setprioceiling.c
new file mode 100644
index 0000000..bb8a3d6
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-setprioceiling.c
@@ -0,0 +1,30 @@
+/* pthread_mutexattr_setprioceiling.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr,
+				  int prioceiling)
+{
+  return ENOSYS;
+}
+
+stub_warning (pthread_mutexattr_setprioceiling)
diff --git a/htl/sysdeps/generic/pt-mutexattr-setprotocol.c b/htl/sysdeps/generic/pt-mutexattr-setprotocol.c
new file mode 100644
index 0000000..e11dc35
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-setprotocol.c
@@ -0,0 +1,42 @@
+/* pthread_mutexattr_setprotocol.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_setprotocol (pthread_mutexattr_t *attr,
+			       int protocol)
+{
+  if (protocol == __pthread_default_mutexattr.__protocol)
+    {
+      attr->__protocol = protocol;
+      return 0;
+    }
+
+  switch (protocol)
+    {
+    case PTHREAD_PRIO_NONE:
+    case PTHREAD_PRIO_INHERIT:
+    case PTHREAD_PRIO_PROTECT:
+      return ENOTSUP;
+    default:
+      return EINVAL;
+    }
+}
diff --git a/htl/sysdeps/generic/pt-mutexattr-setpshared.c b/htl/sysdeps/generic/pt-mutexattr-setpshared.c
new file mode 100644
index 0000000..b7dc1f0
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-setpshared.c
@@ -0,0 +1,39 @@
+/* pthread_mutexattr_setpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_mutexattr_setpshared (pthread_mutexattr_t *attr,
+			      int pshared)
+{
+  switch (pshared)
+    {
+    case PTHREAD_PROCESS_PRIVATE:
+      attr->__pshared = pshared;
+      return 0;
+
+    case PTHREAD_PROCESS_SHARED:
+      return ENOTSUP;
+
+    default:
+      return EINVAL;
+    }
+}
diff --git a/htl/sysdeps/generic/pt-mutexattr-settype.c b/htl/sysdeps/generic/pt-mutexattr-settype.c
new file mode 100644
index 0000000..7a7ce35
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr-settype.c
@@ -0,0 +1,38 @@
+/* pthread_mutexattr_settype.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type)
+{
+  switch (type)
+    {
+    case PTHREAD_MUTEX_NORMAL:
+    case PTHREAD_MUTEX_ERRORCHECK:
+    case PTHREAD_MUTEX_RECURSIVE:
+      attr->__mutex_type = type;
+      return 0;
+
+    default:
+      return EINVAL;
+    }
+}
+weak_alias (__pthread_mutexattr_settype, pthread_mutexattr_settype)
diff --git a/htl/sysdeps/generic/pt-mutexattr.c b/htl/sysdeps/generic/pt-mutexattr.c
new file mode 100644
index 0000000..f9282af
--- /dev/null
+++ b/htl/sysdeps/generic/pt-mutexattr.c
@@ -0,0 +1,45 @@
+/* Default mutex attributes.  Generic version.
+   Copyright (C) 2000, 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+const struct __pthread_mutexattr __pthread_default_mutexattr =
+{
+  __prioceiling: 0,
+  __protocol: PTHREAD_PRIO_NONE,
+  __pshared: PTHREAD_PROCESS_PRIVATE,
+  __mutex_type: PTHREAD_MUTEX_DEFAULT
+};
+
+const struct __pthread_mutexattr __pthread_errorcheck_mutexattr =
+{
+  __prioceiling: 0,
+  __protocol: PTHREAD_PRIO_NONE,
+  __pshared: PTHREAD_PROCESS_PRIVATE,
+  __mutex_type: PTHREAD_MUTEX_ERRORCHECK
+};
+
+const struct __pthread_mutexattr __pthread_recursive_mutexattr =
+{
+  __prioceiling: 0,
+  __protocol: PTHREAD_PRIO_NONE,
+  __pshared: PTHREAD_PROCESS_PRIVATE,
+  __mutex_type: PTHREAD_MUTEX_RECURSIVE
+};
diff --git a/htl/sysdeps/generic/pt-once.c b/htl/sysdeps/generic/pt-once.c
new file mode 100644
index 0000000..cfa45d5
--- /dev/null
+++ b/htl/sysdeps/generic/pt-once.c
@@ -0,0 +1,45 @@
+/* pthread_once.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <bits/memory.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
+{
+  __memory_barrier ();
+  if (once_control->__run == 0)
+    {
+      __pthread_spin_lock (&once_control->__lock);
+
+      if (once_control->__run == 0)
+	{
+	  init_routine ();
+	  __memory_barrier ();
+	  once_control->__run = 1;
+	}
+
+      __pthread_spin_unlock (&once_control->__lock);
+    }
+
+  return 0;
+}
+strong_alias (__pthread_once, pthread_once);
diff --git a/htl/sysdeps/generic/pt-rwlock-attr.c b/htl/sysdeps/generic/pt-rwlock-attr.c
new file mode 100644
index 0000000..8de96f1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-attr.c
@@ -0,0 +1,26 @@
+/* Default rwlock attributes.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+const struct __pthread_rwlockattr __pthread_default_rwlockattr =
+{
+  __pshared: PTHREAD_PROCESS_PRIVATE
+};
diff --git a/htl/sysdeps/generic/pt-rwlock-destroy.c b/htl/sysdeps/generic/pt-rwlock-destroy.c
new file mode 100644
index 0000000..045eebd
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-destroy.c
@@ -0,0 +1,29 @@
+/* Destroy a rwlock.  Generic version.
+   Copyright (C) 2002, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+_pthread_rwlock_destroy (pthread_rwlock_t *rwlock)
+{
+  return 0;
+}
+
+strong_alias (_pthread_rwlock_destroy, pthread_rwlock_destroy);
diff --git a/htl/sysdeps/generic/pt-rwlock-init.c b/htl/sysdeps/generic/pt-rwlock-init.c
new file mode 100644
index 0000000..c9ff9b2
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-init.c
@@ -0,0 +1,45 @@
+/* Initialize a rwlock.  Generic version.
+   Copyright (C) 2002, 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <string.h>
+#include <pt-internal.h>
+
+int
+_pthread_rwlock_init (pthread_rwlock_t *rwlock,
+		      const pthread_rwlockattr_t *attr)
+{
+  *rwlock = (pthread_rwlock_t) __PTHREAD_RWLOCK_INITIALIZER;
+
+  if (! attr
+      || memcmp (attr, &__pthread_default_rwlockattr, sizeof (*attr) == 0))
+    /* Use the default attributes.  */
+    return 0;
+
+  /* Non-default attributes.  */
+
+  rwlock->__attr = malloc (sizeof *attr);
+  if (! rwlock->__attr)
+    return ENOMEM;
+
+  *rwlock->__attr = *attr;
+  return 0;
+}
+
+strong_alias (_pthread_rwlock_init, pthread_rwlock_init);
diff --git a/htl/sysdeps/generic/pt-rwlock-rdlock.c b/htl/sysdeps/generic/pt-rwlock-rdlock.c
new file mode 100644
index 0000000..708e3e1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-rdlock.c
@@ -0,0 +1,33 @@
+/* Acquire a rwlock for reading.  Generic version.
+   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+/* Implemented in pt-rwlock-timedrdlock.c.  */
+extern int __pthread_rwlock_timedrdlock_internal (struct __pthread_rwlock *rwlock,
+						  const struct timespec *abstime);
+
+/* Acquire RWLOCK for reading, block if we can't get it.  */
+int
+__pthread_rwlock_rdlock (struct __pthread_rwlock *rwlock)
+{
+  return __pthread_rwlock_timedrdlock_internal (rwlock, 0);
+}
+weak_alias (__pthread_rwlock_rdlock, pthread_rwlock_rdlock);
diff --git a/htl/sysdeps/generic/pt-rwlock-timedrdlock.c b/htl/sysdeps/generic/pt-rwlock-timedrdlock.c
new file mode 100644
index 0000000..4cfba43
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-timedrdlock.c
@@ -0,0 +1,121 @@
+/* Acquire a rwlock for reading.  Generic version.
+   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+/* Acquire the rwlock *RWLOCK for reading blocking until *ABSTIME if
+   it is already held.  As a GNU extension, if TIMESPEC is NULL then
+   wait forever.  */
+int
+__pthread_rwlock_timedrdlock_internal (struct __pthread_rwlock *rwlock,
+				       const struct timespec *abstime)
+{
+  error_t err;
+  int drain;
+  struct __pthread *self;
+
+  __pthread_spin_lock (&rwlock->__lock);
+  if (__pthread_spin_trylock (&rwlock->__held) == 0)
+    /* Successfully acquired the lock.  */
+    {
+      assert (rwlock->__readerqueue == 0);
+      assert (rwlock->__writerqueue == 0);
+      assert (rwlock->__readers == 0);
+
+      rwlock->__readers = 1;
+      __pthread_spin_unlock (&rwlock->__lock);
+      return 0;
+    }
+  else
+    /* Lock is held, but is held by a reader?  */
+    if (rwlock->__readers > 0)
+      /* Just add ourself to number of readers.  */
+      {
+	assert (rwlock->__readerqueue == 0);
+	rwlock->__readers ++;
+	__pthread_spin_unlock (&rwlock->__lock);
+	return 0;
+      }
+
+  /* The lock is busy.  */
+
+  /* Better be blocked by a writer.  */
+  assert (rwlock->__readers == 0);
+
+  if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
+    return EINVAL;
+
+  self = _pthread_self ();
+
+  /* Add ourself to the queue.  */
+  __pthread_enqueue (&rwlock->__readerqueue, self);
+  __pthread_spin_unlock (&rwlock->__lock);
+
+  /* Block the thread.  */
+  if (abstime)
+    err = __pthread_timedblock (self, abstime, CLOCK_REALTIME);
+  else
+    {
+      err = 0;
+      __pthread_block (self);
+    }
+
+  __pthread_spin_lock (&rwlock->__lock);
+  if (! self->prevp)
+    /* Another thread removed us from the queue, which means a wakeup message
+       has been sent.  It was either consumed while we were blocking, or
+       queued after we timed out and before we acquired the rwlock lock, in
+       which case the message queue must be drained.  */
+    drain = err ? 1 : 0;
+  else
+    {
+      /* We're still in the queue.  Noone attempted to wake us up, i.e. we
+	 timed out.  */
+      __pthread_dequeue (self);
+      drain = 0;
+    }
+  __pthread_spin_unlock (&rwlock->__lock);
+
+  if (drain)
+    __pthread_block (self);
+
+  if (err)
+    {
+      assert (err == ETIMEDOUT);
+      return err;
+    }
+
+  /* The reader count has already been increment by whoever woke us
+     up.  */
+
+  assert (rwlock->__readers > 0);
+
+  return 0;
+}
+
+int
+__pthread_rwlock_timedrdlock (struct __pthread_rwlock *rwlock,
+			    const struct timespec *abstime)
+{
+  return __pthread_rwlock_timedrdlock_internal (rwlock, abstime);
+}
+weak_alias (__pthread_rwlock_timedrdlock, pthread_rwlock_timedrdlock)
diff --git a/htl/sysdeps/generic/pt-rwlock-timedwrlock.c b/htl/sysdeps/generic/pt-rwlock-timedwrlock.c
new file mode 100644
index 0000000..2adaf03
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-timedwrlock.c
@@ -0,0 +1,104 @@
+/* Acquire a rwlock for writing.  Generic version.
+   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+/* Acquire RWLOCK for writing blocking until *ABSTIME if we cannot get
+   it.  As a special GNU extension, if ABSTIME is NULL then the wait
+   shall not time out.  */
+int
+__pthread_rwlock_timedwrlock_internal (struct __pthread_rwlock *rwlock,
+				       const struct timespec *abstime)
+{
+  error_t err;
+  int drain;
+  struct __pthread *self;
+
+  __pthread_spin_lock (&rwlock->__lock);
+  if (__pthread_spin_trylock (&rwlock->__held) == 0)
+    /* Successfully acquired the lock.  */
+    {
+      assert (rwlock->__readerqueue == 0);
+      assert (rwlock->__writerqueue == 0);
+      assert (rwlock->__readers == 0);
+
+      __pthread_spin_unlock (&rwlock->__lock);
+      return 0;
+    }
+
+  /* The lock is busy.  */
+
+  if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
+    return EINVAL;
+
+  self = _pthread_self ();
+
+  /* Add ourselves to the queue.  */
+  __pthread_enqueue (&rwlock->__writerqueue, self);
+  __pthread_spin_unlock (&rwlock->__lock);
+
+  /* Block the thread.  */
+  if (abstime)
+    err = __pthread_timedblock (self, abstime, CLOCK_REALTIME);
+  else
+    {
+      err = 0;
+      __pthread_block (self);
+    }
+
+  __pthread_spin_lock (&rwlock->__lock);
+  if (! self->prevp)
+    /* Another thread removed us from the queue, which means a wakeup message
+       has been sent.  It was either consumed while we were blocking, or
+       queued after we timed out and before we acquired the rwlock lock, in
+       which case the message queue must be drained.  */
+    drain = err ? 1 : 0;
+  else
+    {
+      /* We're still in the queue.  Noone attempted to wake us up, i.e. we
+	 timed out.  */
+      __pthread_dequeue (self);
+      drain = 0;
+    }
+  __pthread_spin_unlock (&rwlock->__lock);
+
+  if (drain)
+    __pthread_block (self);
+
+  if (err)
+    {
+      assert (err == ETIMEDOUT);
+      return err;
+    }
+
+  assert (rwlock->__readers == 0);
+
+  return 0;
+}
+
+int
+__pthread_rwlock_timedwrlock (struct __pthread_rwlock *rwlock,
+			    const struct timespec *abstime)
+{
+  return __pthread_rwlock_timedwrlock_internal (rwlock, abstime);
+}
+weak_alias (__pthread_rwlock_timedwrlock, pthread_rwlock_timedwrlock)
diff --git a/htl/sysdeps/generic/pt-rwlock-tryrdlock.c b/htl/sysdeps/generic/pt-rwlock-tryrdlock.c
new file mode 100644
index 0000000..30cb6cf
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-tryrdlock.c
@@ -0,0 +1,56 @@
+/* Try to acquire a rwlock for reading.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+/* Try to acquire RWLOCK.  */
+int
+pthread_rwlock_tryrdlock (struct __pthread_rwlock *rwlock)
+{
+  __pthread_spin_lock (&rwlock->__lock);
+  if (__pthread_spin_trylock (&rwlock->__held) == 0)
+    /* Successfully acquired the lock.  */
+    {
+      assert (rwlock->__readerqueue == 0);
+      assert (rwlock->__writerqueue == 0);
+      assert (rwlock->__readers == 0);
+
+      rwlock->__readers = 1;
+      __pthread_spin_unlock (&rwlock->__lock);
+      return 0;
+    }
+  else
+    /* Lock is held, but is held by a reader?  */
+    if (rwlock->__readers > 0)
+      {
+	assert (rwlock->__readerqueue == 0);
+	rwlock->__readers ++;
+	__pthread_spin_unlock (&rwlock->__lock);
+	return 0;
+      }
+
+  /* The lock is busy.  */
+
+  __pthread_spin_unlock (&rwlock->__lock);
+
+  return EBUSY;
+}
diff --git a/htl/sysdeps/generic/pt-rwlock-trywrlock.c b/htl/sysdeps/generic/pt-rwlock-trywrlock.c
new file mode 100644
index 0000000..af8f911
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-trywrlock.c
@@ -0,0 +1,46 @@
+/* Try to acquire a rwlock for writing.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+/* Try to acquire RWLOCK for writing.  */
+int
+pthread_rwlock_trywrlock (struct __pthread_rwlock *rwlock)
+{
+  __pthread_spin_lock (&rwlock->__lock);
+  if (__pthread_spin_trylock (&rwlock->__held) == 0)
+    /* Successfully acquired the lock.  */
+    {
+      assert (rwlock->__readerqueue == 0);
+      assert (rwlock->__writerqueue == 0);
+      assert (rwlock->__readers == 0);
+
+      __pthread_spin_unlock (&rwlock->__lock);
+      return 0;
+    }
+
+  /* The lock is busy.  */
+
+  __pthread_spin_unlock (&rwlock->__lock);
+
+  return EBUSY;
+}
diff --git a/htl/sysdeps/generic/pt-rwlock-unlock.c b/htl/sysdeps/generic/pt-rwlock-unlock.c
new file mode 100644
index 0000000..b796508
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-unlock.c
@@ -0,0 +1,99 @@
+/* Unlock a rwlock.  Generic version.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Unlock *RWLOCK, rescheduling a waiting writer thread or, if there
+   are no threads waiting for a write lock, rescheduling the reader
+   threads.  */
+int
+__pthread_rwlock_unlock (pthread_rwlock_t *rwlock)
+{
+  struct __pthread *wakeup;
+
+  __pthread_spin_lock (&rwlock->__lock);
+
+  assert (__pthread_spin_trylock (&rwlock->__held) == EBUSY);
+
+  if (rwlock->__readers > 1)
+    /* There are other readers.  */
+    {
+      rwlock->__readers --;
+      __pthread_spin_unlock (&rwlock->__lock);
+      return 0;
+    }
+
+  if (rwlock->__readers == 1)
+    /* Last reader.  */
+    rwlock->__readers = 0;
+
+
+  /* Wake someone else up.  Try the writer queue first, then the
+     reader queue if that is empty.  */
+
+  if (rwlock->__writerqueue)
+    {
+      wakeup = rwlock->__writerqueue;
+      __pthread_dequeue (wakeup);
+
+      /* We do not unlock RWLOCK->held: we are transferring the ownership
+	 to the thread that we are waking up.  */
+
+      __pthread_spin_unlock (&rwlock->__lock);
+      __pthread_wakeup (wakeup);
+
+      return 0;
+    }
+
+  if (rwlock->__readerqueue)
+    {
+      unsigned n = 0;
+
+      __pthread_queue_iterate (rwlock->__readerqueue, wakeup)
+        n ++;
+
+      {
+	struct __pthread *wakeups[n];
+	unsigned i = 0;
+
+	__pthread_dequeuing_iterate (rwlock->__readerqueue, wakeup)
+	    wakeups[i ++] = wakeup;
+
+	rwlock->__readers += n;
+	rwlock->__readerqueue = 0;
+
+	__pthread_spin_unlock (&rwlock->__lock);
+
+	for (i = 0; i < n; i ++)
+	  __pthread_wakeup (wakeups[i]);
+      }
+
+      return 0;
+    }
+
+
+  /* Noone is waiting.  Just unlock it.  */
+
+  __pthread_spin_unlock (&rwlock->__held);
+  __pthread_spin_unlock (&rwlock->__lock);
+  return 0;
+}
+weak_alias (__pthread_rwlock_unlock, pthread_rwlock_unlock);
diff --git a/htl/sysdeps/generic/pt-rwlock-wrlock.c b/htl/sysdeps/generic/pt-rwlock-wrlock.c
new file mode 100644
index 0000000..c769bc6
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlock-wrlock.c
@@ -0,0 +1,35 @@
+/* Acquire a rwlock for writing.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+/* Implemented in pt-rwlock-timedwrlock.c.  */
+extern int __pthread_rwlock_timedwrlock_internal (struct __pthread_rwlock *rwlock,
+						  const struct timespec *abstime);
+
+/* Acquire RWLOCK for writing.  */
+int
+__pthread_rwlock_wrlock (struct __pthread_rwlock *rwlock)
+{
+  return __pthread_rwlock_timedwrlock_internal (rwlock, 0);
+}
+weak_alias (__pthread_rwlock_wrlock, pthread_rwlock_wrlock);
diff --git a/htl/sysdeps/generic/pt-rwlockattr-destroy.c b/htl/sysdeps/generic/pt-rwlockattr-destroy.c
new file mode 100644
index 0000000..eabfcbe
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlockattr-destroy.c
@@ -0,0 +1,27 @@
+/* pthread_rwlockattr_destroy.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_rwlockattr_destroy (pthread_rwlockattr_t *attr)
+{
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-rwlockattr-getpshared.c b/htl/sysdeps/generic/pt-rwlockattr-getpshared.c
new file mode 100644
index 0000000..1565cf1
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlockattr-getpshared.c
@@ -0,0 +1,29 @@
+/* pthread_rwlockattr_getpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *attr,
+			       int *pshared)
+{
+  *pshared = attr->__pshared;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-rwlockattr-init.c b/htl/sysdeps/generic/pt-rwlockattr-init.c
new file mode 100644
index 0000000..34da6bf
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlockattr-init.c
@@ -0,0 +1,28 @@
+/* pthread_rwlockattr_init.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_rwlockattr_init (pthread_rwlockattr_t *attr)
+{
+  *attr = __pthread_default_rwlockattr;
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-rwlockattr-setpshared.c b/htl/sysdeps/generic/pt-rwlockattr-setpshared.c
new file mode 100644
index 0000000..71f5c68
--- /dev/null
+++ b/htl/sysdeps/generic/pt-rwlockattr-setpshared.c
@@ -0,0 +1,39 @@
+/* pthread_rwlockattr_setpshared.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_rwlockattr_setpshared (pthread_rwlockattr_t *attr,
+			       int pshared)
+{
+  switch (pshared)
+    {
+    case PTHREAD_PROCESS_PRIVATE:
+      attr->__pshared = pshared;
+      return 0;
+
+    case PTHREAD_PROCESS_SHARED:
+      return ENOTSUP;
+
+    default:
+      return EINVAL;
+    }
+}
diff --git a/htl/sysdeps/generic/pt-setconcurrency.c b/htl/sysdeps/generic/pt-setconcurrency.c
new file mode 100644
index 0000000..cd55b1b
--- /dev/null
+++ b/htl/sysdeps/generic/pt-setconcurrency.c
@@ -0,0 +1,34 @@
+/* Set the desired level of concurrency.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int __pthread_concurrency;
+
+int
+pthread_setconcurrency (int new_level)
+{
+  if (new_level < 0)
+    return EINVAL;
+
+  __pthread_concurrency = new_level;
+
+  return 0;
+}
diff --git a/htl/sysdeps/generic/pt-setschedparam.c b/htl/sysdeps/generic/pt-setschedparam.c
new file mode 100644
index 0000000..29e2a4e
--- /dev/null
+++ b/htl/sysdeps/generic/pt-setschedparam.c
@@ -0,0 +1,31 @@
+/* Set the scheduling parameters for a thread.  Generic version.
+   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+__pthread_setschedparam (pthread_t thread, int policy,
+		       const struct sched_param *param)
+{
+  return ENOSYS;
+}
+
+strong_alias (__pthread_setschedparam, pthread_setschedparam);
+stub_warning (pthread_setschedparam)
diff --git a/htl/sysdeps/generic/pt-setschedprio.c b/htl/sysdeps/generic/pt-setschedprio.c
new file mode 100644
index 0000000..d79690e
--- /dev/null
+++ b/htl/sysdeps/generic/pt-setschedprio.c
@@ -0,0 +1,29 @@
+/* Set the scheduling priority of a thread.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_setschedprio (pthread_t thread, int prio)
+{
+  return ENOSYS;
+}
+
+stub_warning (pthread_setschedprio)
diff --git a/htl/sysdeps/generic/pt-setspecific.c b/htl/sysdeps/generic/pt-setspecific.c
new file mode 100644
index 0000000..871560c
--- /dev/null
+++ b/htl/sysdeps/generic/pt-setspecific.c
@@ -0,0 +1,51 @@
+/* pthread_setspecific.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_setspecific (pthread_key_t key, const void *value)
+{
+  struct __pthread *self = _pthread_self ();
+
+  if (key < 0 || key >= __pthread_key_count
+      || __pthread_key_destructors[key] == PTHREAD_KEY_INVALID)
+    return EINVAL;
+
+  if (key >= self->thread_specifics_size)
+    {
+      /* Amortize reallocation cost.  */
+      int newsize = 2 * key + 1;
+      void **new = realloc (self->thread_specifics,
+			    newsize * sizeof (new[0]));
+      if (! new )
+	return ENOMEM;
+
+      memset (&new[self->thread_specifics_size], 0,
+	      (newsize - self->thread_specifics_size) * sizeof (new[0]));
+      self->thread_specifics = new;
+      self->thread_specifics_size = newsize;
+    }
+
+  self->thread_specifics[key] = (void*) value;
+  return 0;
+}
+strong_alias (__pthread_setspecific, pthread_setspecific);
diff --git a/htl/sysdeps/generic/pt-startup.c b/htl/sysdeps/generic/pt-startup.c
new file mode 100644
index 0000000..c21a181
--- /dev/null
+++ b/htl/sysdeps/generic/pt-startup.c
@@ -0,0 +1,25 @@
+/* Thread initialization.  Generic version.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pt-internal.h>
+
+void
+__pthread_startup (void)
+{
+}
diff --git a/htl/sysdeps/generic/pthread/pthread.h b/htl/sysdeps/generic/pthread/pthread.h
new file mode 100644
index 0000000..fccb7ce
--- /dev/null
+++ b/htl/sysdeps/generic/pthread/pthread.h
@@ -0,0 +1,884 @@
+/* Copyright (C) 2000, 2002, 2005, 2006, 2007, 2008, 2009, 2010
+     Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ *	POSIX Threads Extension: ???			<pthread.h>
+ */
+
+#ifndef _PTHREAD_H
+#define _PTHREAD_H	1
+
+#include <features.h>
+
+#include <sys/cdefs.h>
+#ifndef __extern_inline
+/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+   inline semantics, unless -fgnu89-inline is used.  */
+# if !defined __cplusplus || __GNUC_PREREQ (4,3)
+#  if defined __GNUC_STDC_INLINE__ || defined __cplusplus
+#   define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
+#   if __GNUC_PREREQ (4,3)
+#    define __extern_always_inline \
+   extern __always_inline __attribute__ ((__gnu_inline__, __artificial__))
+#   else
+#    define __extern_always_inline \
+   extern __always_inline __attribute__ ((__gnu_inline__))
+#   endif
+#  else
+#   define __extern_inline extern __inline
+#   define __extern_always_inline extern __always_inline
+#  endif
+# endif
+#endif
+
+#include <sched.h>
+#include <time.h>
+
+__BEGIN_DECLS
+
+#include <pthread/pthreadtypes.h>
+
+#include <bits/pthread.h>
+
+/* Possible values for the process shared attribute.  */
+#define PTHREAD_PROCESS_PRIVATE __PTHREAD_PROCESS_PRIVATE
+#define PTHREAD_PROCESS_SHARED __PTHREAD_PROCESS_SHARED
+
+
+/* Thread attributes.  */
+
+/* Possible values for the inheritsched attribute.  */
+#define PTHREAD_EXPLICIT_SCHED __PTHREAD_EXPLICIT_SCHED
+#define PTHREAD_INHERIT_SCHED __PTHREAD_INHERIT_SCHED
+
+/* Possible values for the `contentionscope' attribute.  */
+#define PTHREAD_SCOPE_SYSTEM __PTHREAD_SCOPE_SYSTEM
+#define PTHREAD_SCOPE_PROCESS __PTHREAD_SCOPE_PROCESS
+
+/* Possible values for the `detachstate' attribute.  */
+#define PTHREAD_CREATE_JOINABLE __PTHREAD_CREATE_JOINABLE
+#define PTHREAD_CREATE_DETACHED __PTHREAD_CREATE_DETACHED
+
+#include <bits/thread-attr.h>
+
+/* Initialize the thread attribute object in *ATTR to the default
+   values.  */
+extern int pthread_attr_init (pthread_attr_t *__attr) __THROW __nonnull ((1));
+
+/* Destroy the thread attribute object in *ATTR.  */
+extern int pthread_attr_destroy (pthread_attr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the inheritsched attribute in *ATTR in
+   *INHERITSCHED.  */
+extern int pthread_attr_getinheritsched (const pthread_attr_t *__restrict __attr,
+					 int *__restrict __inheritsched)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the inheritsched attribute in *ATTR to
+   INHERITSCHED.  */
+extern int pthread_attr_setinheritsched (pthread_attr_t *__attr,
+					 int __inheritsched)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the schedparam attribute in *ATTR in *PARAM.  */
+extern int pthread_attr_getschedparam (const pthread_attr_t *__restrict __attr,
+				       struct sched_param *__restrict __param)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the schedparam attribute in *ATTR to PARAM.  */
+extern int pthread_attr_setschedparam (pthread_attr_t *__restrict __attr,
+				       const struct sched_param *__restrict
+				       __param) __THROW __nonnull ((1, 2));
+
+
+/* Return the value of the schedpolicy attribute in *ATTR to *POLICY.  */
+extern int pthread_attr_getschedpolicy (const pthread_attr_t *__restrict __attr,
+					int *__restrict __policy)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the schedpolicy attribute in *ATTR to POLICY.  */
+extern int pthread_attr_setschedpolicy (pthread_attr_t *__attr,
+					int __policy)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the contentionscope attribute in *ATTR in
+   *CONTENTIONSCOPE.  */
+extern int pthread_attr_getscope (const pthread_attr_t *__restrict __attr,
+				  int *__restrict __contentionscope)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the contentionscope attribute in *ATTR to
+   CONTENTIONSCOPE.  */
+extern int pthread_attr_setscope (pthread_attr_t *__attr,
+				  int __contentionscope)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the stackaddr attribute in *ATTR in
+   *STACKADDR.  */
+extern int pthread_attr_getstackaddr (const pthread_attr_t *__restrict __attr,
+				      void **__restrict __stackaddr)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the stackaddr attribute in *ATTR to STACKADDR.  */
+extern int pthread_attr_setstackaddr (pthread_attr_t *__attr,
+				      void *__stackaddr)
+	__THROW __nonnull ((1));
+
+
+#ifdef __USE_XOPEN2K
+/* Return the value of the stackaddr and stacksize attributes in *ATTR
+   in *STACKADDR and *STACKSIZE respectively.  */
+extern int pthread_attr_getstack (const pthread_attr_t *__restrict __attr,
+				  void **__restrict __stackaddr,
+				  size_t *__restrict __stacksize)
+	__THROW __nonnull ((1, 2, 3));
+
+/* Set the value of the stackaddr and stacksize attributes in *ATTR to
+   STACKADDR and STACKSIZE respectively.  */
+extern int pthread_attr_setstack (pthread_attr_t *__attr,
+				  void *__stackaddr,
+				  size_t __stacksize)
+	__THROW __nonnull ((1));
+#endif
+
+
+/* Return the value of the detachstate attribute in *ATTR in
+   *DETACHSTATE.  */
+extern int pthread_attr_getdetachstate (const pthread_attr_t *__attr,
+					int *__detachstate)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the detachstate attribute in *ATTR to
+   DETACHSTATE.  */
+extern int pthread_attr_setdetachstate (pthread_attr_t *__attr,
+					int __detachstate)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the guardsize attribute in *ATTR in
+   *GUARDSIZE.  */
+extern int pthread_attr_getguardsize (const pthread_attr_t *__restrict __attr,
+				      size_t *__restrict __guardsize)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the guardsize attribute in *ATTR to GUARDSIZE.  */
+extern int pthread_attr_setguardsize (pthread_attr_t *__attr,
+				      size_t __guardsize)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the stacksize attribute in *ATTR in
+   *STACKSIZE.  */
+extern int pthread_attr_getstacksize (const pthread_attr_t *__restrict __attr,
+				      size_t *__restrict __stacksize)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the stacksize attribute in *ATTR to STACKSIZE.  */
+extern int pthread_attr_setstacksize (pthread_attr_t *__attr,
+				      size_t __stacksize)
+	__THROW __nonnull ((1));
+
+#ifdef __USE_GNU
+/* Initialize thread attribute *ATTR with attributes corresponding to the
+   already running thread THREAD.  It shall be called on an uninitialized ATTR
+   and destroyed with pthread_attr_destroy when no longer needed.  */
+extern int pthread_getattr_np (pthread_t __thr, pthread_attr_t *__attr)
+	__THROW __nonnull ((2));
+#endif
+
+
+/* Create a thread with attributes given by ATTR, executing
+   START_ROUTINE with argument ARG.  */
+extern int pthread_create (pthread_t *__restrict __threadp,
+			   __const pthread_attr_t *__restrict __attr,
+			   void *(*__start_routine)(void *),
+			   void *__restrict __arg) __THROWNL __nonnull ((1, 3));
+
+/* Terminate the current thread and make STATUS available to any
+   thread that might join us.  */
+extern void pthread_exit (void *__status) __attribute__ ((__noreturn__));
+
+/* Make calling thread wait for termination of thread THREAD.  Return
+   the exit status of the thread in *STATUS.  */
+extern int pthread_join (pthread_t __threadp, void **__status);
+
+/* Indicate that the storage for THREAD can be reclaimed when it
+   terminates.  */
+extern int pthread_detach (pthread_t __threadp);
+
+/* Compare thread IDs T1 and T2.  Return nonzero if they are equal, 0
+   if they are not.  */
+extern int pthread_equal (pthread_t __t1, pthread_t __t2);
+
+# ifdef __USE_EXTERN_INLINES
+
+__extern_inline int
+pthread_equal (pthread_t __t1, pthread_t __t2)
+{
+  return __pthread_equal (__t1, __t2);
+}
+
+# endif /* Use extern inlines.  */
+
+
+/* Return the thread ID of the calling thread.  */
+extern pthread_t pthread_self (void) __THROW;
+
+
+/* Mutex attributes.  */
+
+#define PTHREAD_PRIO_NONE_NP __PTHREAD_PRIO_NONE
+#define PTHREAD_PRIO_INHERIT_NP __PTHREAD_PRIO_INHERIT
+#define PTHREAD_PRIO_PROTECT_NP __PTHREAD_PRIO_PROTECT
+#ifdef __USE_UNIX98
+#define PTHREAD_PRIO_NONE PTHREAD_PRIO_NONE_NP
+#define PTHREAD_PRIO_INHERIT PTHREAD_PRIO_INHERIT_NP
+#define PTHREAD_PRIO_PROTECT PTHREAD_PRIO_PROTECT_NP
+#endif
+
+#define PTHREAD_MUTEX_TIMED_NP __PTHREAD_MUTEX_TIMED
+#define PTHREAD_MUTEX_ERRORCHECK_NP __PTHREAD_MUTEX_ERRORCHECK
+#define PTHREAD_MUTEX_RECURSIVE_NP __PTHREAD_MUTEX_RECURSIVE
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+#define PTHREAD_MUTEX_NORMAL PTHREAD_MUTEX_TIMED_NP
+#define PTHREAD_MUTEX_ERRORCHECK PTHREAD_MUTEX_ERRORCHECK_NP
+#define PTHREAD_MUTEX_RECURSIVE PTHREAD_MUTEX_RECURSIVE_NP
+#define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL
+#endif
+#ifdef __USE_GNU
+/* For compatibility.  */
+#define PTHREAD_MUTEX_FAST_NP PTHREAD_MUTEX_TIMED_NP
+#endif
+
+#ifdef __USE_XOPEN2K
+#define PTHREAD_MUTEX_STALLED __PTHREAD_MUTEX_STALLED
+#define PTHREAD_MUTEX_ROBUST __PTHREAD_MUTEX_ROBUST
+#endif
+
+#include <bits/mutex-attr.h>
+
+/* Initialize the mutex attribute object in *ATTR to the default
+   values.  */
+extern int pthread_mutexattr_init(pthread_mutexattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the mutex attribute structure in *ATTR.  */
+extern int pthread_mutexattr_destroy(pthread_mutexattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+#ifdef __USE_UNIX98
+/* Return the value of the prioceiling attribute in *ATTR in
+   *PRIOCEILING.  */
+extern int pthread_mutexattr_getprioceiling(const pthread_mutexattr_t *__restrict __attr,
+					    int *__restrict __prioceiling)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the prioceiling attribute in *ATTR to
+   PRIOCEILING.  */
+extern int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *__attr,
+					    int __prioceiling)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the protocol attribute in *ATTR in
+   *PROTOCOL.  */
+extern int pthread_mutexattr_getprotocol(const pthread_mutexattr_t *__restrict __attr,
+					 int *__restrict __protocol)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the protocol attribute in *ATTR to PROTOCOL.  */
+extern int pthread_mutexattr_setprotocol(pthread_mutexattr_t *__attr,
+					 int __protocol)
+	__THROW __nonnull ((1));
+#endif
+
+#ifdef __USE_XOPEN2K
+/* Get the robustness flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_getrobust (const pthread_mutexattr_t *__attr,
+					int *__robustness)
+     __THROW __nonnull ((1, 2));
+# ifdef __USE_GNU
+extern int pthread_mutexattr_getrobust_np (const pthread_mutexattr_t *__attr,
+					   int *__robustness)
+     __THROW __nonnull ((1, 2));
+# endif
+
+/* Set the robustness flag of the mutex attribute ATTR.  */
+extern int pthread_mutexattr_setrobust (pthread_mutexattr_t *__attr,
+					int __robustness)
+     __THROW __nonnull ((1));
+# ifdef __USE_GNU
+extern int pthread_mutexattr_setrobust_np (pthread_mutexattr_t *__attr,
+					   int __robustness)
+     __THROW __nonnull ((1));
+# endif
+#endif
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_mutexattr_getpshared(const pthread_mutexattr_t *__restrict __attr,
+					int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared attribute in *ATTR to
+   PSHARED.  */
+extern int pthread_mutexattr_setpshared(pthread_mutexattr_t *__attr,
+					int __pshared)
+	__THROW __nonnull ((1));
+
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+/* Return the value of the type attribute in *ATTR in *TYPE.  */
+extern int pthread_mutexattr_gettype(const pthread_mutexattr_t *__restrict __attr,
+				     int *__restrict __type)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the type attribute in *ATTR to TYPE.  */
+extern int pthread_mutexattr_settype(pthread_mutexattr_t *__attr,
+				     int __type)
+	__THROW __nonnull ((1));
+#endif
+
+
+/* Mutexes.  */
+
+#include <bits/mutex.h>
+
+#define PTHREAD_MUTEX_INITIALIZER __PTHREAD_MUTEX_INITIALIZER
+/* Static initializer for recursive mutexes.  */
+
+#ifdef __USE_GNU
+# define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \
+  __PTHREAD_ERRORCHECK_MUTEX_INITIALIZER
+# define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \
+  __PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#endif
+
+/* Create a mutex with attributes given by ATTR and store it in
+   *__MUTEX.  */
+extern int pthread_mutex_init (struct __pthread_mutex *__restrict __mutex,
+			       const pthread_mutexattr_t *__restrict __attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the mutex __MUTEX.  */
+extern int pthread_mutex_destroy (struct __pthread_mutex *__mutex)
+	__THROW __nonnull ((1));
+
+/* Wait until lock for MUTEX becomes available and lock it.  */
+extern int pthread_mutex_lock (pthread_mutex_t *__mutex);
+
+/* Try to lock MUTEX.  */
+extern int pthread_mutex_trylock (pthread_mutex_t *__mutex)
+	__THROWNL __nonnull ((1));
+
+#ifdef __USE_XOPEN2K
+/* Try to lock MUTEX, block until *ABSTIME if it is already held.  */
+extern int pthread_mutex_timedlock (struct __pthread_mutex *__restrict __mutex,
+				    const struct timespec *__restrict __abstime)
+	__THROWNL __nonnull ((1, 2));
+#endif
+
+/* Unlock MUTEX.  */
+extern int pthread_mutex_unlock (pthread_mutex_t *__mutex)
+	__THROWNL __nonnull ((1));
+
+/* Transfer ownership of the mutex MUTEX to the thread TID.  The
+   caller must own the lock.  */
+extern int __pthread_mutex_transfer_np (struct __pthread_mutex *__mutex,
+					pthread_t __tid)
+	__THROWNL __nonnull ((1));
+
+
+#ifdef __USE_UNIX98
+/* Return the priority ceiling of mutex *MUTEX in *PRIOCEILING.  */
+extern int pthread_mutex_getprioceiling (const pthread_mutex_t *__restrict __mutex,
+					 int *__restrict __prioceiling)
+	__THROW __nonnull ((1, 2));
+
+/* After acquiring the mutex *MUTEX, set its priority ceiling to PRIO
+   and return the old priority ceiling in *OLDPRIO.  Before returning,
+   release the mutex.  */
+extern int pthread_mutex_setprioceiling (pthread_mutex_t *__restrict __mutex,
+					 int __prio, int *__restrict __oldprio)
+	__THROW __nonnull ((1, 3));
+#endif
+
+#ifdef __USE_XOPEN2K8
+
+/* Declare the state protected by robust mutex MTXP as consistent. */
+extern int pthread_mutex_consistent (pthread_mutex_t *__mtxp)
+  __THROW __nonnull ((1));
+
+#  ifdef __USE_GNU
+extern int pthread_mutex_consistent_np (pthread_mutex_t *__mtxp)
+  __THROW __nonnull ((1));
+#  endif
+#endif
+
+
+
+/* Condition attributes.  */
+
+#include <bits/condition-attr.h>
+
+/* Initialize the condition attribute in *ATTR to the default
+   values.  */
+extern int pthread_condattr_init (pthread_condattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the condition attribute structure in *ATTR.  */
+extern int pthread_condattr_destroy (pthread_condattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+#ifdef __USE_XOPEN2K
+/* Return the value of the clock attribute in *ATTR in *CLOCK_ID.  */
+extern int pthread_condattr_getclock (const pthread_condattr_t *__restrict __attr,
+				      __clockid_t *__restrict __clock_id)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the clock attribute in *ATTR to CLOCK_ID.  */
+extern int pthread_condattr_setclock (pthread_condattr_t *__attr,
+				      __clockid_t __clock_id)
+	__THROW __nonnull ((1));
+#endif
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_condattr_getpshared (const pthread_condattr_t *__restrict __attr,
+					int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared attribute in *ATTR to
+   PSHARED.  */
+extern int pthread_condattr_setpshared (pthread_condattr_t *__attr,
+					int __pshared)
+	__THROW __nonnull ((1));
+
+
+/* Condition variables.  */
+
+#include <bits/condition.h>
+
+#define PTHREAD_COND_INITIALIZER __PTHREAD_COND_INITIALIZER
+
+extern int pthread_cond_init (pthread_cond_t *__restrict __cond,
+			      const pthread_condattr_t *__restrict __attr)
+	__THROW __nonnull ((1));
+
+extern int pthread_cond_destroy (pthread_cond_t *__cond)
+	__THROW __nonnull ((1));
+
+/* Unblock at least one of the threads that are blocked on condition
+   variable COND.  */
+extern int pthread_cond_signal (pthread_cond_t *__cond)
+	__THROWNL __nonnull ((1));
+
+/* Unblock all threads that are blocked on condition variable COND.  */
+extern int pthread_cond_broadcast (pthread_cond_t *__cond)
+	__THROWNL __nonnull ((1));
+
+/* Block on condition variable COND.  MUTEX should be held by the
+   calling thread.  On success, MUTEX will be held by the calling
+   thread.  */
+extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
+			      pthread_mutex_t *__restrict __mutex)
+	 __nonnull ((1, 2));
+
+/* Block on condition variable COND.  MUTEX should be held by the
+   calling thread. On success, MUTEX will be held by the calling
+   thread.  If the time specified by ABSTIME passes, ETIMEDOUT is
+   returned, and MUTEX will nevertheless be held.  */
+extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
+				   pthread_mutex_t *__restrict __mutex,
+				   __const struct timespec *__restrict __abstime)
+	 __nonnull ((1, 2, 3));
+
+
+/* Spin locks.  */
+
+#ifdef __USE_XOPEN2K
+
+# include <bits/spin-lock.h>
+
+#define PTHREAD_SPINLOCK_INITIALIZER __PTHREAD_SPIN_LOCK_INITIALIZER
+
+/* Destroy the spin lock object LOCK.  */
+extern int pthread_spin_destroy (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+/* Initialize the spin lock object LOCK.  PSHARED determines whether
+   the spin lock can be operated upon by multiple processes.  */
+extern int pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+	__nonnull ((1));
+
+/* Lock the spin lock object LOCK.  If the lock is held by another
+   thread spin until it becomes available.  */
+extern int pthread_spin_lock (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+/* Lock the spin lock object LOCK.  Fail if the lock is held by
+   another thread.  */
+extern int pthread_spin_trylock (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+/* Unlock the spin lock object LOCK.  */
+extern int pthread_spin_unlock (pthread_spinlock_t *__lock)
+	__nonnull ((1));
+
+# if defined __USE_EXTERN_INLINES && defined _LIBC
+
+# include <bits/spin-lock-inline.h>
+
+__extern_inline int
+pthread_spin_destroy (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_destroy (__lock);
+}
+
+__extern_inline int
+pthread_spin_init (pthread_spinlock_t *__lock, int __pshared)
+{
+  return __pthread_spin_init (__lock, __pshared);
+}
+
+__extern_inline int
+pthread_spin_lock (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_lock (__lock);
+}
+
+__extern_inline int
+pthread_spin_trylock (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_trylock (__lock);
+}
+
+__extern_inline int
+pthread_spin_unlock (pthread_spinlock_t *__lock)
+{
+  return __pthread_spin_unlock (__lock);
+}
+
+# endif /* Use extern inlines.  */
+
+#endif /* XPG6.  */
+
+
+/* rwlock attributes.  */
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+
+#include <bits/rwlock-attr.h>
+
+/* Initialize rwlock attribute object in *ATTR to the default
+   values.  */
+extern int pthread_rwlockattr_init (pthread_rwlockattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the rwlock attribute object in *ATTR.  */
+extern int pthread_rwlockattr_destroy (pthread_rwlockattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *__restrict __attr,
+					  int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared atrribute in *ATTR to
+   PSHARED.  */
+extern int pthread_rwlockattr_setpshared (pthread_rwlockattr_t *__attr,
+					  int __pshared)
+	__THROW __nonnull ((1));
+
+/* Return current setting of reader/writer preference.  */
+extern int pthread_rwlockattr_getkind_np (const pthread_rwlockattr_t *
+					  __restrict __attr,
+					  int *__restrict __pref)
+     __THROW __nonnull ((1, 2));
+
+/* Set reader/write preference.  */
+extern int pthread_rwlockattr_setkind_np (pthread_rwlockattr_t *__attr,
+					  int __pref) __THROW __nonnull ((1));
+
+
+/* rwlocks.  */
+
+#include <bits/rwlock.h>
+
+#define PTHREAD_RWLOCK_INITIALIZER __PTHREAD_RWLOCK_INITIALIZER
+/* Create a rwlock object with attributes given by ATTR and strore the
+   result in *RWLOCK.  */
+extern int pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock,
+				const pthread_rwlockattr_t *__restrict __attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the rwlock *RWLOCK.  */
+extern int pthread_rwlock_destroy (pthread_rwlock_t *__rwlock)
+	__THROW __nonnull ((1));
+
+/* Acquire the rwlock *RWLOCK for reading.  */
+extern int pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+/* Acquire the rwlock *RWLOCK for reading.  */
+extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+# ifdef __USE_XOPEN2K
+/* Acquire the rwlock *RWLOCK for reading blocking until *ABSTIME if
+   it is already held.  */
+extern int pthread_rwlock_timedrdlock (struct __pthread_rwlock *__restrict __rwlock,
+				       const struct timespec *__restrict __abstime)
+	__THROWNL __nonnull ((1, 2));
+# endif
+
+/* Acquire the rwlock *RWLOCK for writing.  */
+extern int pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+/* Try to acquire the rwlock *RWLOCK for writing.  */
+extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+# ifdef __USE_XOPEN2K
+/* Acquire the rwlock *RWLOCK for writing blocking until *ABSTIME if
+   it is already held.  */
+extern int pthread_rwlock_timedwrlock (struct __pthread_rwlock *__restrict __rwlock,
+				       const struct timespec *__restrict __abstime)
+	__THROWNL __nonnull ((1, 2));
+# endif
+
+/* Release the lock held by the current thread on *RWLOCK.  */
+extern int pthread_rwlock_unlock (pthread_rwlock_t *__rwlock)
+	__THROWNL __nonnull ((1));
+
+#endif /* __USE_UNIX98 || __USE_XOPEN2K */
+
+
+
+/* Cancelation.  */
+
+/* Register a cleanup handler.  */
+extern void pthread_cleanup_push (void (*__routine) (void *), void *__arg);
+
+/* Unregister a cleanup handler.  */
+extern void pthread_cleanup_pop (int __execute);
+
+#include <bits/cancelation.h>
+
+#define pthread_cleanup_push(rt, rtarg) __pthread_cleanup_push(rt, rtarg)
+#define pthread_cleanup_pop(execute) __pthread_cleanup_pop(execute)
+
+#define PTHREAD_CANCEL_DISABLE 0
+#define PTHREAD_CANCEL_ENABLE 1
+
+/* Return the calling thread's cancelation state in *OLDSTATE and set
+   its state to STATE.  */
+extern int pthread_setcancelstate (int __state, int *__oldstate);
+
+#define PTHREAD_CANCEL_DEFERRED 0
+#define PTHREAD_CANCEL_ASYNCHRONOUS 1
+
+/* Return the calling thread's cancelation type in *OLDTYPE and set
+   its type to TYPE.  */
+extern int pthread_setcanceltype (int __type, int *__oldtype);
+
+/* Value returned by pthread_join if the target thread was
+   canceled.  */
+#define PTHREAD_CANCELED ((void *) -1)
+
+/* Cancel THEAD.  */
+extern int pthread_cancel (pthread_t __thr);
+
+/* Add an explicit cancelation point.  */
+extern void pthread_testcancel (void);
+
+
+/* Barriers attributes.  */
+
+#ifdef __USE_XOPEN2K
+
+#include <bits/barrier-attr.h>
+
+/* Initialize barrier attribute object in *ATTR to the default
+   values.  */
+extern int pthread_barrierattr_init (pthread_barrierattr_t *__attr)
+	__THROW __nonnull ((1));
+
+/* Destroy the barrier attribute object in *ATTR.  */
+extern int pthread_barrierattr_destroy (pthread_barrierattr_t *__attr)
+	__THROW __nonnull ((1));
+
+
+/* Return the value of the process shared attribute in *ATTR in
+   *PSHARED.  */
+extern int pthread_barrierattr_getpshared (const pthread_barrierattr_t *__restrict __attr,
+					   int *__restrict __pshared)
+	__THROW __nonnull ((1, 2));
+
+/* Set the value of the process shared atrribute in *ATTR to
+   PSHARED.  */
+extern int pthread_barrierattr_setpshared (pthread_barrierattr_t *__attr,
+					   int __pshared)
+	__THROW __nonnull ((1));
+
+
+/* Barriers.  */
+
+#include <bits/barrier.h>
+
+/* Returned by pthread_barrier_wait to exactly one thread each time a
+   barrier is passed.  */
+#define PTHREAD_BARRIER_SERIAL_THREAD -1
+
+/* Initialize barrier BARRIER.  */
+extern int pthread_barrier_init (pthread_barrier_t *__restrict __barrier,
+				const pthread_barrierattr_t *__restrict __attr,
+				unsigned __count)
+	__THROW __nonnull ((1));
+
+/* Destroy barrier BARRIER.  */
+extern int pthread_barrier_destroy (pthread_barrier_t *__barrier)
+	__THROW __nonnull ((1));
+
+/* Wait on barrier BARRIER.  */
+extern int pthread_barrier_wait (pthread_barrier_t *__barrier)
+	__THROWNL __nonnull ((1));
+
+#endif /* __USE_XOPEN2K */
+
+
+
+/* Thread specific data.  */
+
+#include <bits/thread-specific.h>
+
+/* Create a thread specific data key in KEY visible to all threads.
+   On thread destruction, DESTRUCTOR shall be called with the thread
+   specific data associate with KEY if it is not NULL.  */
+extern int pthread_key_create (pthread_key_t *__key,
+			       void (*__destructor) (void *))
+	__THROW __nonnull ((1));
+
+/* Delete the thread specific data key KEY.  The associated destructor
+   function is not called.  */
+extern int pthread_key_delete (pthread_key_t __key) __THROW;
+
+/* Return the caller thread's thread specific value of KEY.  */
+extern void *pthread_getspecific (pthread_key_t __key) __THROW;
+
+/* Set the caller thread's thread specific value of KEY to VALUE.  */
+extern int pthread_setspecific (pthread_key_t __key, const void *__value)
+	__THROW;
+
+
+/* Dynamic package initialization.  */
+
+#include <bits/once.h>
+
+#define PTHREAD_ONCE_INIT __PTHREAD_ONCE_INIT
+
+/* Call INIT_ROUTINE if this function has never been called with
+   *ONCE_CONTROL, otherwise do nothing.  */
+extern int pthread_once (pthread_once_t *__once_control,
+			 void (*__init_routine) (void)) __nonnull ((1, 2));
+
+
+/* Concurrency.  */
+
+#ifdef __USE_UNIX98
+/* Set the desired concurrency level to NEW_LEVEL.  */
+extern int pthread_setconcurrency (int __new_level) __THROW;
+
+/* Get the current concurrency level.  */
+extern int pthread_getconcurrency (void) __THROW;
+#endif
+
+
+/* Forking.  */
+
+/* Register the function PREPARE to be run before the process forks,
+   the function PARENT to be run after a fork in the parent and the
+   function CHILD to be run in the child after the fork.  If no
+   handling is desired then any of PREPARE, PARENT and CHILD may be
+   NULL.  The prepare handles will be called in the reverse order
+   which they were registered and the parent and child handlers in the
+   order in which they were registered.  */
+extern int pthread_atfork (void (*__prepare) (void), void (*__parent) (void),
+			   void (*__child) (void)) __THROW;
+
+
+/* Signals (should be in <signal.h>).  */
+
+/* Send signal SIGNO to thread THREAD.  */
+extern int pthread_kill (pthread_t __thr, int __signo) __THROW;
+
+
+/* Time.  */
+
+#ifdef __USE_XOPEN2K
+/* Return the thread cpu clock.  */
+extern int pthread_getcpuclockid (pthread_t __thr, __clockid_t *__clock)
+	__THROW __nonnull ((2));
+#endif
+
+
+/* Scheduling.  */
+
+/* Return thread THREAD's scheduling paramters.  */
+extern int pthread_getschedparam (pthread_t __thr, int *__restrict __policy,
+				  struct sched_param *__restrict __param)
+	__THROW __nonnull ((2, 3));
+
+/* Set thread THREAD's scheduling paramters.  */
+extern int pthread_setschedparam (pthread_t __thr, int __policy,
+				  const struct sched_param *__param)
+	__THROW __nonnull ((3));
+
+/* Set thread THREAD's scheduling priority.  */
+extern int pthread_setschedprio (pthread_t __thr, int __prio) __THROW;
+
+#ifdef __USE_GNU
+/* Yield the processor to another thread or process.
+   This function is similar to the POSIX `sched_yield' function but
+   might be differently implemented in the case of a m-on-n thread
+   implementation.  */
+extern int pthread_yield (void) __THROW;
+#endif
+
+
+/* Kernel-specific interfaces.  */
+
+#include <bits/pthread-np.h>
+
+
+__END_DECLS
+
+#endif /* pthread.h */
diff --git a/htl/sysdeps/generic/pthread/pthreadtypes.h b/htl/sysdeps/generic/pthread/pthreadtypes.h
new file mode 100644
index 0000000..d8aed4d
--- /dev/null
+++ b/htl/sysdeps/generic/pthread/pthreadtypes.h
@@ -0,0 +1,131 @@
+/* Copyright (C) 2000, 2002, 2005, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ *	POSIX Threads Extension: ???			<pthreadtypes.h>
+ */
+
+#ifndef _PTHREADTYPES_H
+#define _PTHREADTYPES_H	1
+
+#include <features.h>
+
+#include <bits/types.h>
+
+__BEGIN_DECLS
+
+#include <bits/pthread.h>
+typedef __pthread_t pthread_t;
+
+/* Possible values for the process shared attribute.  */
+enum __pthread_process_shared
+  {
+    __PTHREAD_PROCESS_PRIVATE = 0,
+    __PTHREAD_PROCESS_SHARED
+  };
+
+/* Possible values for the inheritsched attribute.  */
+enum __pthread_inheritsched
+  {
+    __PTHREAD_EXPLICIT_SCHED = 0,
+    __PTHREAD_INHERIT_SCHED
+  };
+
+/* Possible values for the `contentionscope' attribute.  */
+enum __pthread_contentionscope
+  {
+    __PTHREAD_SCOPE_SYSTEM = 0,
+    __PTHREAD_SCOPE_PROCESS
+  };
+
+/* Possible values for the `detachstate' attribute.  */
+enum __pthread_detachstate
+  {
+    __PTHREAD_CREATE_JOINABLE = 0,
+    __PTHREAD_CREATE_DETACHED
+  };
+
+#include <bits/thread-attr.h>
+typedef struct __pthread_attr pthread_attr_t;
+
+enum __pthread_mutex_protocol
+  {
+    __PTHREAD_PRIO_NONE= 0,
+    __PTHREAD_PRIO_INHERIT,
+    __PTHREAD_PRIO_PROTECT
+  };
+
+enum __pthread_mutex_type
+  {
+    __PTHREAD_MUTEX_TIMED,
+    __PTHREAD_MUTEX_ERRORCHECK,
+    __PTHREAD_MUTEX_RECURSIVE
+  };
+
+enum __pthread_mutex_robustness
+  {
+    __PTHREAD_MUTEX_STALLED,
+    __PTHREAD_MUTEX_ROBUST = 0x100
+  };
+
+#include <bits/mutex-attr.h>
+typedef struct __pthread_mutexattr pthread_mutexattr_t;
+
+#include <bits/mutex.h>
+typedef struct __pthread_mutex pthread_mutex_t;
+
+#include <bits/condition-attr.h>
+typedef struct __pthread_condattr pthread_condattr_t;
+
+#include <bits/condition.h>
+typedef struct __pthread_cond pthread_cond_t;
+
+#ifdef __USE_XOPEN2K
+# include <bits/spin-lock.h>
+typedef __pthread_spinlock_t pthread_spinlock_t;
+#endif /* XPG6.  */
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+
+#include <bits/rwlock-attr.h>
+typedef struct __pthread_rwlockattr pthread_rwlockattr_t;
+
+#include <bits/rwlock.h>
+typedef struct __pthread_rwlock pthread_rwlock_t;
+
+#endif /* __USE_UNIX98 || __USE_XOPEN2K */
+
+#ifdef __USE_XOPEN2K
+
+#include <bits/barrier-attr.h>
+typedef struct __pthread_barrierattr pthread_barrierattr_t;
+
+#include <bits/barrier.h>
+typedef struct __pthread_barrier pthread_barrier_t;
+
+#endif /* __USE_XOPEN2K */
+
+#include <bits/thread-specific.h>
+typedef __pthread_key pthread_key_t;
+
+#include <bits/once.h>
+typedef struct __pthread_once pthread_once_t;
+
+__END_DECLS
+
+#endif /* pthreadtypes.h */
diff --git a/htl/sysdeps/generic/raise.c b/htl/sysdeps/generic/raise.c
new file mode 100644
index 0000000..b98cf51
--- /dev/null
+++ b/htl/sysdeps/generic/raise.c
@@ -0,0 +1,51 @@
+/* raise.c - Generic raise implementation.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Written by Neal H. Walfield <neal@gnu.org>.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 3 of
+   the License, or (at your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthreadP.h>
+#include <signal.h>
+#include <unistd.h>
+
+#pragma weak __pthread_kill
+#pragma weak __pthread_self
+#pragma weak __pthread_threads
+int
+raise (int signo)
+{
+  /* According to POSIX, if we implement threads (and we do), then
+     "the effect of the raise() function shall be equivalent to
+     calling: pthread_kill(pthread_self(), sig);"  */
+
+  if (__pthread_kill && __pthread_threads)
+    {
+      int err;
+      err = __pthread_kill (__pthread_self (), signo);
+      if (err)
+	{
+	  errno = err;
+	  return -1;
+	}
+      return 0;
+    }
+  else
+    return __kill (__getpid (), signo);
+}
+
+libc_hidden_def (raise)
+weak_alias (raise, gsignal)
diff --git a/htl/sysdeps/generic/sem-close.c b/htl/sysdeps/generic/sem-close.c
new file mode 100644
index 0000000..9f48032
--- /dev/null
+++ b/htl/sysdeps/generic/sem-close.c
@@ -0,0 +1,32 @@
+/* Close a named semaphore.  Generic version.
+   Copyright (C) 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+
+#include <pt-internal.h>
+
+int
+__sem_close (sem_t *sem)
+{
+  errno = EOPNOTSUPP;
+  return -1;
+}
+
+strong_alias (__sem_close, sem_close);
diff --git a/htl/sysdeps/generic/sem-destroy.c b/htl/sysdeps/generic/sem-destroy.c
new file mode 100644
index 0000000..6486599
--- /dev/null
+++ b/htl/sysdeps/generic/sem-destroy.c
@@ -0,0 +1,38 @@
+/* Destroy a semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+
+#include <pt-internal.h>
+
+int
+__sem_destroy (sem_t *sem)
+{
+  if (sem->__queue)
+    /* There are threads waiting on *SEM.  */
+    {
+      errno = EBUSY;
+      return -1;
+    }
+
+  return 0;
+}
+
+strong_alias (__sem_destroy, sem_destroy);
diff --git a/htl/sysdeps/generic/sem-getvalue.c b/htl/sysdeps/generic/sem-getvalue.c
new file mode 100644
index 0000000..7762089
--- /dev/null
+++ b/htl/sysdeps/generic/sem-getvalue.c
@@ -0,0 +1,33 @@
+/* Get the value of a semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <pt-internal.h>
+
+int
+__sem_getvalue (sem_t *restrict sem, int *restrict value)
+{
+  __pthread_spin_lock (&sem->__lock);
+  *value = sem->__value;
+  __pthread_spin_unlock (&sem->__lock);
+
+  return 0;
+}
+
+strong_alias (__sem_getvalue, sem_getvalue);
diff --git a/htl/sysdeps/generic/sem-init.c b/htl/sysdeps/generic/sem-init.c
new file mode 100644
index 0000000..d2414f5
--- /dev/null
+++ b/htl/sysdeps/generic/sem-init.c
@@ -0,0 +1,46 @@
+/* Initialize a semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+
+#include <pt-internal.h>
+
+int
+__sem_init (sem_t *sem, int pshared, unsigned value)
+{
+  if (pshared != 0)
+    {
+      errno = EOPNOTSUPP;
+      return -1;
+    }
+
+#ifdef SEM_VALUE_MAX
+  if (value > SEM_VALUE_MAX)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+#endif
+
+  *sem = (sem_t) __SEMAPHORE_INITIALIZER (pshared, value);
+  return 0;
+}
+
+strong_alias (__sem_init, sem_init);
diff --git a/htl/sysdeps/generic/sem-open.c b/htl/sysdeps/generic/sem-open.c
new file mode 100644
index 0000000..bae87ed
--- /dev/null
+++ b/htl/sysdeps/generic/sem-open.c
@@ -0,0 +1,32 @@
+/* Open a named semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+
+#include <pt-internal.h>
+
+sem_t *
+__sem_open (const char *name, int open_flags, ...)
+{
+  errno = EOPNOTSUPP;
+  return SEM_FAILED;
+}
+
+strong_alias (__sem_open, sem_open);
diff --git a/htl/sysdeps/generic/sem-post.c b/htl/sysdeps/generic/sem-post.c
new file mode 100644
index 0000000..6d438bf
--- /dev/null
+++ b/htl/sysdeps/generic/sem-post.c
@@ -0,0 +1,62 @@
+/* Post a semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+__sem_post (sem_t *sem)
+{
+  struct __pthread *wakeup;
+
+  __pthread_spin_lock (&sem->__lock);
+  if (sem->__value > 0)
+    /* Do a quick up.  */
+    {
+      assert (! sem->__queue);
+      sem->__value ++;
+      __pthread_spin_unlock (&sem->__lock);
+      return 0;
+    }
+
+  if (! sem->__queue)
+    /* No one waiting.  */
+    {
+      sem->__value = 1;
+      __pthread_spin_unlock (&sem->__lock);
+      return 0;
+    }
+
+  /* Wake someone up.  */
+
+  /* First dequeue someone.  */
+  wakeup = sem->__queue;
+  __pthread_dequeue (wakeup);
+
+  /* Then drop the lock and transfer control.  */
+  __pthread_spin_unlock (&sem->__lock);
+
+  __pthread_wakeup (wakeup);
+
+  return 0;
+}
+
+strong_alias (__sem_post, sem_post);
diff --git a/htl/sysdeps/generic/sem-timedwait.c b/htl/sysdeps/generic/sem-timedwait.c
new file mode 100644
index 0000000..11c1391
--- /dev/null
+++ b/htl/sysdeps/generic/sem-timedwait.c
@@ -0,0 +1,100 @@
+/* Wait on a semaphore with a timeout.  Generic version.
+   Copyright (C) 2005, 2006, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <pt-internal.h>
+
+int
+__sem_timedwait_internal (sem_t *restrict sem,
+			  const struct timespec *restrict timeout)
+{
+  error_t err;
+  int drain;
+  struct __pthread *self;
+
+  __pthread_spin_lock (&sem->__lock);
+  if (sem->__value > 0)
+    /* Successful down.  */
+    {
+      sem->__value --;
+      __pthread_spin_unlock (&sem->__lock);
+      return 0;
+    }
+
+  if (timeout && (timeout->tv_nsec < 0 || timeout->tv_nsec >= 1000000000))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* Add ourselves to the queue.  */
+  self = _pthread_self ();
+
+  __pthread_enqueue (&sem->__queue, self);
+  __pthread_spin_unlock (&sem->__lock);
+
+  /* Block the thread.  */
+  if (timeout)
+    err = __pthread_timedblock (self, timeout, CLOCK_REALTIME);
+  else
+    {
+      err = 0;
+      __pthread_block (self);
+    }
+
+  __pthread_spin_lock (&sem->__lock);
+  if (! self->prevp)
+    /* Another thread removed us from the queue, which means a wakeup message
+       has been sent.  It was either consumed while we were blocking, or
+       queued after we timed out and before we acquired the semaphore lock, in
+       which case the message queue must be drained.  */
+    drain = err ? 1 : 0;
+  else
+    {
+      /* We're still in the queue.  Noone attempted to wake us up, i.e. we
+	 timed out.  */
+      __pthread_dequeue (self);
+      drain = 0;
+    }
+  __pthread_spin_unlock (&sem->__lock);
+
+  if (drain)
+    __pthread_block (self);
+
+  if (err)
+    {
+      assert (err == ETIMEDOUT);
+      errno = err;
+      return -1;
+    }
+
+  return 0;
+}
+
+int
+__sem_timedwait (sem_t *restrict sem,
+		 const struct timespec *restrict timeout)
+{
+  return __sem_timedwait_internal (sem, timeout);
+}
+
+weak_alias (__sem_timedwait, sem_timedwait);
diff --git a/htl/sysdeps/generic/sem-trywait.c b/htl/sysdeps/generic/sem-trywait.c
new file mode 100644
index 0000000..437e282
--- /dev/null
+++ b/htl/sysdeps/generic/sem-trywait.c
@@ -0,0 +1,42 @@
+/* Lock a semaphore if it does not require blocking.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+
+#include <pt-internal.h>
+
+int
+__sem_trywait (sem_t *sem)
+{
+  __pthread_spin_lock (&sem->__lock);
+  if (sem->__value > 0)
+    /* Successful down.  */
+    {
+      sem->__value --;
+      __pthread_spin_unlock (&sem->__lock);
+      return 0;
+    }
+  __pthread_spin_unlock (&sem->__lock);
+
+  errno = EAGAIN;
+  return -1;
+}
+
+strong_alias (__sem_trywait, sem_trywait);
diff --git a/htl/sysdeps/generic/sem-unlink.c b/htl/sysdeps/generic/sem-unlink.c
new file mode 100644
index 0000000..570ed61
--- /dev/null
+++ b/htl/sysdeps/generic/sem-unlink.c
@@ -0,0 +1,32 @@
+/* Unlink a named semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <errno.h>
+
+#include <pt-internal.h>
+
+int
+__sem_unlink (const char *name)
+{
+  errno = EOPNOTSUPP;
+  return -1;
+}
+
+strong_alias (__sem_unlink, sem_unlink);
diff --git a/htl/sysdeps/generic/sem-wait.c b/htl/sysdeps/generic/sem-wait.c
new file mode 100644
index 0000000..8347480
--- /dev/null
+++ b/htl/sysdeps/generic/sem-wait.c
@@ -0,0 +1,32 @@
+/* Wait on a semaphore.  Generic version.
+   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <semaphore.h>
+#include <pt-internal.h>
+
+extern int __sem_timedwait_internal (sem_t *restrict sem,
+				     const struct timespec *restrict timeout);
+
+int
+__sem_wait (sem_t *sem)
+{
+  return __sem_timedwait_internal (sem, 0);
+}
+
+strong_alias (__sem_wait, sem_wait);
diff --git a/htl/sysdeps/generic/shm-directory.h b/htl/sysdeps/generic/shm-directory.h
new file mode 100644
index 0000000..8950284
--- /dev/null
+++ b/htl/sysdeps/generic/shm-directory.h
@@ -0,0 +1,31 @@
+/* Header for directory for shm/sem files.  libpthread version.
+   Copyright (C) 2014-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SHM_DIRECTORY_H
+
+#include <sysdeps/posix/shm-directory.h>
+
+/* For libpthread the __shm_directory function lives in libpthread.
+   We don't want PLT calls from there.  But it's also used from
+   librt, so it cannot just be declared hidden.  */
+
+#if IS_IN (libpthread)
+hidden_proto (__shm_directory)
+#endif
+
+#endif  /* shm-directory.h */
diff --git a/htl/sysdeps/generic/timer_routines.h b/htl/sysdeps/generic/timer_routines.h
new file mode 100644
index 0000000..c69d7c1
--- /dev/null
+++ b/htl/sysdeps/generic/timer_routines.h
@@ -0,0 +1,47 @@
+/* Helper code for POSIX timer implementation on Hurd.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _TIMER_ROUTINES_H
+#define _TIMER_ROUTINES_H	1
+
+#include <pthread/pthreadtypes.h>
+
+/* Compare two pthread_attr_t thread attributes for exact equality.
+   Returns 1 if they are equal, otherwise zero if they are not equal
+   or contain illegal values.  This version is Hurd-specific for
+   performance reason.  One could use the access functions to get the
+   values of all the fields of the attribute structure.  */
+static inline int
+thread_attr_compare (const pthread_attr_t *left, const pthread_attr_t *right)
+{
+  struct __pthread_attr *ileft = (struct __pthread_attr *) left;
+  struct __pthread_attr *iright = (struct __pthread_attr *) right;
+
+  return (ileft->__schedparam.__sched_priority
+	      == iright->__schedparam.__sched_priority
+	  && ileft->__stackaddr == iright->__stackaddr
+	  && ileft->__stacksize == iright->__stacksize
+	  && ileft->__guardsize == iright->__guardsize
+	  && ileft->__detachstate == iright->__detachstate
+	  && ileft->__inheritsched == iright->__inheritsched
+	  && ileft->__contentionscope == iright->__contentionscope
+	  && ileft->__schedpolicy == iright->__schedpolicy);
+}
+
+#endif	/* timer_routines.h */
diff --git a/htl/sysdeps/hurd/pt-kill.c b/htl/sysdeps/hurd/pt-kill.c
new file mode 100644
index 0000000..6aaf241
--- /dev/null
+++ b/htl/sysdeps/hurd/pt-kill.c
@@ -0,0 +1,52 @@
+/* pthread_kill.  Hurd version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+#include <signal.h>
+#include <hurd/signal.h>
+
+#include <pt-internal.h>
+
+int
+__pthread_kill (pthread_t thread, int sig)
+{
+  struct __pthread *pthread;
+  struct hurd_signal_detail detail;
+  struct hurd_sigstate *ss;
+
+  /* Lookup the thread structure for THREAD.  */
+  pthread = __pthread_getid (thread);
+  if (pthread == NULL)
+    return ESRCH;
+
+  ss = _hurd_thread_sigstate (pthread->kernel_thread);
+  assert (ss);
+
+  if (!sig)
+    return 0;
+
+  detail.exc = 0;
+  detail.code = sig;
+  detail.error = 0;
+
+  __spin_lock (&ss->lock);
+  return _hurd_raise_signal (ss, sig, &detail);
+}
+strong_alias (__pthread_kill, pthread_kill)
diff --git a/htl/sysdeps/i386/bits/memory.h b/htl/sysdeps/i386/bits/memory.h
new file mode 100644
index 0000000..932c408
--- /dev/null
+++ b/htl/sysdeps/i386/bits/memory.h
@@ -0,0 +1,40 @@
+/* Memory barrier operations.  i386 version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_MEMORY_H
+#define _BITS_MEMORY_H	1
+
+/* Prevent read and write reordering across this function.  */
+static inline void
+__memory_barrier (void)
+{
+  int i;
+
+  /* Any lock'ed instruction will do.  We just do a simple
+     increment.  */
+  __asm__ __volatile ("lock; incl %0" : "=m" (i) : "m" (i) : "memory");
+}
+
+/* Prevent read reordering across this function.  */
+#define __memory_read_barrier __memory_barrier
+
+/* Prevent write reordering across this function.  */
+#define __memory_write_barrier __memory_barrier
+
+#endif
diff --git a/htl/sysdeps/i386/bits/pt-atomic.h b/htl/sysdeps/i386/bits/pt-atomic.h
new file mode 100644
index 0000000..0dfc1f6
--- /dev/null
+++ b/htl/sysdeps/i386/bits/pt-atomic.h
@@ -0,0 +1,66 @@
+/* Atomic operations.  i386 version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_ATOMIC_H
+#define _BITS_ATOMIC_H	1
+
+typedef __volatile int __atomic_t;
+
+static inline void
+__atomic_inc (__atomic_t *__var)
+{
+  __asm__ __volatile ("lock; incl %0" : "=m" (*__var) : "m" (*__var));
+}
+
+static inline void
+__atomic_dec (__atomic_t *__var)
+{
+  __asm__ __volatile ("lock; decl %0" : "=m" (*__var) : "m" (*__var));
+}
+
+static inline int
+__atomic_dec_and_test (__atomic_t *__var)
+{
+  unsigned char __ret;
+
+  __asm__ __volatile ("lock; decl %0; sete %1"
+		      : "=m" (*__var), "=qm" (__ret) : "m" (*__var));
+  return __ret != 0;
+}
+
+/* We assume that an __atomicptr_t is only used for pointers to
+   word-aligned objects, and use the lowest bit for a simple lock.  */
+typedef __volatile int * __atomicptr_t;
+
+/* Actually we don't implement that yet, and assume that we run on
+   something that has the i486 instruction set.  */
+static inline int
+__atomicptr_compare_and_swap (__atomicptr_t *__ptr, void *__oldval,
+			      void * __newval)
+{
+  char __ret;
+  int __dummy;
+
+  __asm__ __volatile ("lock; cmpxchgl %3, %1; sete %0"
+		      : "=q" (__ret), "=m" (*__ptr), "=a" (__dummy)
+		      : "r" (__newval), "m" (*__ptr), "a" (__oldval));
+  return __ret;
+}
+
+#endif
diff --git a/htl/sysdeps/i386/bits/pthreadtypes-arch.h b/htl/sysdeps/i386/bits/pthreadtypes-arch.h
new file mode 100644
index 0000000..7e7a311
--- /dev/null
+++ b/htl/sysdeps/i386/bits/pthreadtypes-arch.h
@@ -0,0 +1,21 @@
+/* Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_PTHREADTYPES_ARCH_H
+#define _BITS_PTHREADTYPES_ARCH_H	1
+
+#endif	/* bits/pthreadtypes.h */
diff --git a/htl/sysdeps/i386/machine-sp.h b/htl/sysdeps/i386/machine-sp.h
new file mode 100644
index 0000000..cef6ab7
--- /dev/null
+++ b/htl/sysdeps/i386/machine-sp.h
@@ -0,0 +1,30 @@
+/* Machine-specific function to return the stack pointer.  i386 version.
+   Copyright (C) 1994, 1997, 2001, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _MACHINE_SP_H
+#define _MACHINE_SP_H
+
+/* Return the current stack pointer.  */
+
+#define __thread_stack_pointer() ({					      \
+  register void *__sp__ asm("esp");					      \
+  __sp__;								      \
+})
+
+#endif	/* machine-sp.h */
diff --git a/htl/sysdeps/i386/pt-machdep.h b/htl/sysdeps/i386/pt-machdep.h
new file mode 100644
index 0000000..6d45636
--- /dev/null
+++ b/htl/sysdeps/i386/pt-machdep.h
@@ -0,0 +1,29 @@
+/* Machine dependent pthreads internal defenitions.  i386 version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _PT_MACHDEP_H
+#define _PT_MACHDEP_H	1
+
+struct pthread_mcontext
+{
+  void *pc;
+  void *sp;
+};
+
+#endif /* pt-machdep.h */
diff --git a/htl/sysdeps/mach/bits/spin-lock-inline.h b/htl/sysdeps/mach/bits/spin-lock-inline.h
new file mode 100644
index 0000000..98e4b3b
--- /dev/null
+++ b/htl/sysdeps/mach/bits/spin-lock-inline.h
@@ -0,0 +1,88 @@
+/* Definitions of user-visible names for spin locks.
+   Copyright (C) 1994, 1997, 2002, 2008, 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _BITS_SPIN_LOCK_INLINE_H
+#define _BITS_SPIN_LOCK_INLINE_H	1
+
+#include <features.h>
+#include <bits/spin-lock.h>
+#include <lock-intern.h>   /* This does all the work.  */
+
+__BEGIN_DECLS
+
+#if defined __USE_EXTERN_INLINES || defined _FORCE_INLINES
+
+# ifndef __EBUSY
+#  include <errno.h>
+#  define __EBUSY EBUSY
+# endif
+
+# ifndef __PT_SPIN_INLINE
+#  define __PT_SPIN_INLINE __extern_inline
+# endif
+
+__PT_SPIN_INLINE int __pthread_spin_destroy (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_destroy (__pthread_spinlock_t *__lock)
+{
+  return 0;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_init (__pthread_spinlock_t *__lock,
+					  int __pshared);
+
+__PT_SPIN_INLINE int
+__pthread_spin_init (__pthread_spinlock_t *__lock, int __pshared)
+{
+  *__lock = __PTHREAD_SPIN_LOCK_INITIALIZER;
+  return 0;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_trylock (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_trylock (__pthread_spinlock_t *__lock)
+{
+  return __spin_try_lock ((__spin_lock_t *) __lock) ? 0 : __EBUSY;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_lock (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_lock (__pthread_spinlock_t *__lock)
+{
+  __spin_lock ((__spin_lock_t *) __lock);
+  return 0;
+}
+
+__PT_SPIN_INLINE int __pthread_spin_unlock (__pthread_spinlock_t *__lock);
+
+__PT_SPIN_INLINE int
+__pthread_spin_unlock (__pthread_spinlock_t *__lock)
+{
+  __spin_unlock ((__spin_lock_t *) __lock);
+  return 0;
+}
+
+#endif /* Use extern inlines or force inlines.  */
+
+__END_DECLS
+
+#endif /* bits/spin-lock.h */
diff --git a/htl/sysdeps/mach/bits/spin-lock.h b/htl/sysdeps/mach/bits/spin-lock.h
new file mode 100644
index 0000000..7574b37
--- /dev/null
+++ b/htl/sysdeps/mach/bits/spin-lock.h
@@ -0,0 +1,35 @@
+/* Definitions of user-visible names for spin locks.
+   Copyright (C) 1994, 1997, 2002, 2008, 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _BITS_SPIN_LOCK_H
+#define _BITS_SPIN_LOCK_H	1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* The type of a spin lock object.  */
+typedef volatile int __pthread_spinlock_t;
+
+/* Initializer for a spin lock object.  */
+#define __PTHREAD_SPIN_LOCK_INITIALIZER 0
+
+__END_DECLS
+
+#endif /* bits/spin-lock.h */
diff --git a/htl/sysdeps/mach/hurd/Implies b/htl/sysdeps/mach/hurd/Implies
new file mode 100644
index 0000000..c32378a
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/Implies
@@ -0,0 +1,2 @@
+hurd
+pthread
diff --git a/htl/sysdeps/mach/hurd/bits/mutex.h b/htl/sysdeps/mach/hurd/bits/mutex.h
new file mode 100644
index 0000000..a52a2ad
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/bits/mutex.h
@@ -0,0 +1,64 @@
+/* Mutex type.  Generic version.
+
+   Copyright (C) 2000-2016
+     Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_MUTEX_H
+
+#ifndef __need_pthread_mutex
+# define _BITS_MUTEX_H	1
+#endif
+
+#ifndef __pthread_mutex_defined
+# if defined __need_pthread_mutex || defined _BITS_MUTEX_H
+#  undef __need_pthread_mutex
+#  define __pthread_mutex_defined
+
+#  include <bits/mutex-attr.h>
+
+/* User visible part of a mutex.  */
+struct __pthread_mutex
+{
+  unsigned int __lock;
+  unsigned int __owner_id;
+  unsigned int __cnt;
+  int __shpid;
+  int __type;
+  int __flags;
+  unsigned int __reserved1;
+  unsigned int __reserved2;
+};
+
+/* Static mutex initializers. */
+#define __PTHREAD_MUTEX_INITIALIZER   \
+  { 0, 0, 0, 0, __PTHREAD_MUTEX_TIMED, 0, 0, 0 }
+
+/* The +1 is to mantain binary compatibility with the old
+ * libpthread implementation. */
+#define __PTHREAD_ERRORCHECK_MUTEX_INITIALIZER   \
+  { 0, 0, 0, 0, __PTHREAD_MUTEX_ERRORCHECK + 1, 0, 0, 0 }
+
+#define __PTHREAD_RECURSIVE_MUTEX_INITIALIZER   \
+  { 0, 0, 0, 0, __PTHREAD_MUTEX_RECURSIVE + 1, 0, 0, 0 }
+
+# endif
+#endif /* Not __pthread_mutex_defined.  */
+
+#endif /* bits/mutex.h */
diff --git a/htl/sysdeps/mach/hurd/bits/pthread-np.h b/htl/sysdeps/mach/hurd/bits/pthread-np.h
new file mode 100644
index 0000000..4487ffd
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/bits/pthread-np.h
@@ -0,0 +1,38 @@
+/* Non-portable functions. Hurd on Mach version.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <pthread.h> or <cthreads.h> instead.
+ */
+
+#ifndef _BITS_PTHREAD_NP_H
+#define _BITS_PTHREAD_NP_H	1
+
+/* Same as pthread_cond_wait, but for Hurd-specific cancellation.
+   See hurd_thread_cancel.  */
+extern int pthread_hurd_cond_wait_np (pthread_cond_t *__restrict __cond,
+				      pthread_mutex_t *__restrict __mutex);
+
+/* Same as pthread_cond_timedwait, but for Hurd-specific cancellation.
+   See hurd_thread_cancel.  */
+extern int pthread_hurd_cond_timedwait_np (pthread_cond_t *__restrict __cond,
+					   pthread_mutex_t *__restrict __mutex,
+					   const struct timespec *__abstime);
+
+#endif /* bits/pthread-np.h */
diff --git a/htl/sysdeps/mach/hurd/i386/pt-machdep.c b/htl/sysdeps/mach/hurd/i386/pt-machdep.c
new file mode 100644
index 0000000..f3c8cf5
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/i386/pt-machdep.c
@@ -0,0 +1,83 @@
+/* Machine dependent pthreads code.  Hurd/i386 version.
+   Copyright (C) 2000, 2002, 2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+
+#include <mach.h>
+#include <mach/i386/thread_status.h>
+#include <mach/i386/mach_i386.h>
+#include <mach/mig_errors.h>
+#include <mach/thread_status.h>
+
+#define HURD_TLS_DESC_DECL(desc, tcb)					      \
+  struct descriptor desc =						      \
+    {				/* low word: */				      \
+      0xffff			/* limit 0..15 */			      \
+      | (((unsigned int) (tcb)) << 16) /* base 0..15 */			      \
+      ,				/* high word: */			      \
+      ((((unsigned int) (tcb)) >> 16) & 0xff) /* base 16..23 */		      \
+      | ((0x12 | 0x60 | 0x80) << 8) /* access = ACC_DATA_W|ACC_PL_U|ACC_P */  \
+      | (0xf << 16)		/* limit 16..19 */			      \
+      | ((4 | 8) << 20)		/* granularity = SZ_32|SZ_G */		      \
+      | (((unsigned int) (tcb)) & 0xff000000) /* base 24..31 */		      \
+    }
+
+int
+__thread_set_pcsptp (thread_t thread,
+		   int set_ip, void *ip,
+		   int set_sp, void *sp,
+		   int set_tp, void *tp)
+{
+  error_t err;
+  struct i386_thread_state state;
+  mach_msg_type_number_t state_count;
+
+  state_count = i386_THREAD_STATE_COUNT;
+
+  err = __thread_get_state (thread, i386_REGS_SEGS_STATE,
+			    (thread_state_t) &state, &state_count);
+  if (err)
+    return err;
+
+  if (set_sp)
+    state.uesp = (unsigned int) sp;
+  if (set_ip)
+    state.eip = (unsigned int) ip;
+  if (set_tp) {
+    HURD_TLS_DESC_DECL(desc, tp);
+    int sel;
+
+    asm ("mov %%gs, %w0" : "=q" (sel) : "0" (0));
+    if (__builtin_expect (sel, 0x48) & 4) /* LDT selector */
+      err = __i386_set_ldt (thread, sel, &desc, 1);
+    else
+      err = __i386_set_gdt (thread, &sel, desc);
+    if (err)
+      return err;
+    state.gs = sel;
+  }
+
+  err = __thread_set_state (thread, i386_REGS_SEGS_STATE,
+			    (thread_state_t) &state,
+			    i386_THREAD_STATE_COUNT);
+  if (err)
+    return err;
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/i386/pt-setup.c b/htl/sysdeps/mach/hurd/i386/pt-setup.c
new file mode 100644
index 0000000..4511463
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/i386/pt-setup.c
@@ -0,0 +1,110 @@
+/* Setup thread stack.  Hurd/i386 version.
+   Copyright (C) 2000, 2002, 2005, 2007, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <stdint.h>
+#include <assert.h>
+#include <mach.h>
+
+#include <pt-internal.h>
+
+/* The stack layout used on the i386 is:
+
+    -----------------
+   |  ARG            |
+    -----------------
+   |  START_ROUTINE  |
+    -----------------
+   |  0              |
+    -----------------
+ */
+
+/* Set up the stack for THREAD, such that it appears as if
+   START_ROUTINE and ARG were passed to the new thread's entry-point.
+   Return the stack pointer for the new thread.  */
+static void *
+stack_setup (struct __pthread *thread,
+	     void *(*start_routine)(void *), void *arg)
+{
+  error_t err;
+  uintptr_t *bottom, *top;
+
+  /* Calculate the top of the new stack.  */
+  bottom = thread->stackaddr;
+  top = (uintptr_t *) ((uintptr_t) bottom + thread->stacksize
+        + ((thread->guardsize + __vm_page_size-1)
+	   / __vm_page_size) * __vm_page_size);
+
+  if (start_routine)
+    {
+      /* And then the call frame.  */
+      top -= 3;
+      top = (uintptr_t *) ((uintptr_t) top & ~0xf);
+      top[2] = (uintptr_t) arg;	/* Argument to START_ROUTINE.  */
+      top[1] = (uintptr_t) start_routine;
+      top[0] = (uintptr_t) thread;
+      *--top = 0;		/* Fake return address.  */
+    }
+
+  if (thread->guardsize)
+    {
+      err = __vm_protect (__mach_task_self (), (vm_address_t) bottom,
+			  thread->guardsize, 0, 0);
+      assert_perror (err);
+    }
+
+  return top;
+}
+
+int
+__pthread_setup (struct __pthread *thread,
+		 void (*entry_point)(struct __pthread *, void *(*)(void *), void *),
+		 void *(*start_routine)(void *), void *arg)
+{
+  tcbhead_t *tcb;
+  error_t err;
+  mach_port_t ktid;
+
+  thread->mcontext.pc = entry_point;
+  thread->mcontext.sp = stack_setup (thread, start_routine, arg);
+
+  ktid = __mach_thread_self ();
+  if (thread->kernel_thread == ktid)
+    /* Fix up the TCB for the main thread.  The C library has already
+       installed a TCB, which we want to keep using.  This TCB must not
+       be freed so don't register it in the thread structure.  On the
+       other hand, it's not yet possible to reliably release a TCB.
+       Leave the unused one registered so that it doesn't leak.  The
+       only thing left to do is to correctly set the `self' member in
+       the already existing TCB.  */
+    tcb = THREAD_SELF;
+  else
+    {
+      err = __thread_set_pcsptp (thread->kernel_thread,
+			       1, thread->mcontext.pc,
+			       1, thread->mcontext.sp,
+			       1, thread->tcb);
+      assert_perror (err);
+      tcb = thread->tcb;
+    }
+  __mach_port_deallocate (__mach_task_self (), ktid);
+
+  tcb->self = thread->kernel_thread;
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-attr-setstackaddr.c b/htl/sysdeps/mach/hurd/pt-attr-setstackaddr.c
new file mode 100644
index 0000000..864835f
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-attr-setstackaddr.c
@@ -0,0 +1,29 @@
+/* pthread_attr_setstackaddr.  Hurd on Mach version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_setstackaddr (pthread_attr_t *attr,
+			   void *stackaddr)
+{
+  attr->__stackaddr = stackaddr;
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-attr-setstacksize.c b/htl/sysdeps/mach/hurd/pt-attr-setstacksize.c
new file mode 100644
index 0000000..7757bac
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-attr-setstacksize.c
@@ -0,0 +1,29 @@
+/* pthread_attr_setstacksize.  Hurd on Mach version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+
+int
+pthread_attr_setstacksize (pthread_attr_t *attr,
+			   size_t stacksize)
+{
+  attr->__stacksize = stacksize;
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-docancel.c b/htl/sysdeps/mach/hurd/pt-docancel.c
new file mode 100644
index 0000000..12bbafb
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-docancel.c
@@ -0,0 +1,66 @@
+/* Cancel a thread.
+   Copyright (C) 2002, 2007, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+static void
+call_exit (void)
+{
+  pthread_exit (0);
+}
+
+int
+__pthread_do_cancel (struct __pthread *p)
+{
+  mach_port_t ktid;
+  int me;
+
+  assert (p->cancel_pending == 1);
+  assert (p->cancel_state == PTHREAD_CANCEL_ENABLE);
+
+  __pthread_mutex_unlock (&p->cancel_lock);
+
+  ktid = __mach_thread_self ();
+  me = p->kernel_thread == ktid;
+  __mach_port_deallocate (__mach_task_self (), ktid);
+
+  if (me)
+    call_exit ();
+  else
+    {
+      error_t err;
+
+      err = __thread_suspend (p->kernel_thread);
+      assert_perror (err);
+
+      err = __thread_abort (p->kernel_thread);
+      assert_perror (err);
+
+      err = __thread_set_pcsptp (p->kernel_thread,
+			       1, (void *) call_exit, 0, 0, 0, 0);
+      assert_perror (err);
+
+      err = __thread_resume (p->kernel_thread);
+      assert_perror (err);
+    }
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c b/htl/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c
new file mode 100644
index 0000000..3d1fe53
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-hurd-cond-timedwait.c
@@ -0,0 +1,169 @@
+/* pthread_hurd_cond_timedwait_np.  Hurd-specific wait on a condition.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+#include <hurd/signal.h>
+
+#include <pt-internal.h>
+
+extern int __pthread_hurd_cond_timedwait_internal (pthread_cond_t *cond,
+						   pthread_mutex_t *mutex,
+						   const struct timespec *abstime);
+
+int
+__pthread_hurd_cond_timedwait_np (pthread_cond_t *cond,
+				  pthread_mutex_t *mutex,
+				  const struct timespec *abstime)
+{
+  return __pthread_hurd_cond_timedwait_internal (cond, mutex, abstime);
+}
+
+strong_alias (__pthread_hurd_cond_timedwait_np, pthread_hurd_cond_timedwait_np);
+
+int
+__pthread_hurd_cond_timedwait_internal (pthread_cond_t *cond,
+					pthread_mutex_t *mutex,
+					const struct timespec *abstime)
+{
+  struct hurd_sigstate *ss = _hurd_self_sigstate ();
+  struct __pthread *self = _pthread_self ();
+  error_t err = 0;
+  int cancel, drain;
+  clockid_t clock_id = __pthread_default_condattr.__clock;
+
+  /* This function will be called by hurd_thread_cancel while we are blocked
+     We wake up our thread if it's still blocking or about to block, so it will
+     progress and notice the cancellation flag.  */
+  void cancel_me (void)
+    {
+      int unblock;
+
+      __pthread_spin_lock (&cond->__lock);
+      /* The thread only needs to be awaken if it's blocking or about to block.
+	 If it was already unblocked, it's not queued any more.  */
+      unblock = self->prevp != NULL;
+      if (unblock)
+	__pthread_dequeue (self);
+      __pthread_spin_unlock (&cond->__lock);
+
+      if (unblock)
+	__pthread_wakeup (self);
+    }
+
+  assert (ss->intr_port == MACH_PORT_NULL); /* Sanity check for signal bugs. */
+
+  if (abstime && (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000))
+    return EINVAL;
+
+  /* Atomically enqueue our thread on the condition variable's queue of
+     waiters, and mark our sigstate to indicate that `cancel_me' must be
+     called to wake us up.  We must hold the sigstate lock while acquiring
+     the condition variable's lock and tweaking it, so that
+     hurd_thread_cancel can never suspend us and then deadlock waiting for
+     the condition variable's lock.  */
+
+  __spin_lock (&ss->lock);
+  __pthread_spin_lock (&cond->__lock);
+  cancel = ss->cancel;
+  if (cancel)
+    /* We were cancelled before doing anything.  Don't block at all.  */
+    ss->cancel = 0;
+  else
+    {
+      /* Put us on the queue so that pthread_cond_broadcast will know to wake
+         us up.  */
+      __pthread_enqueue (&cond->__queue, self);
+      if (cond->__attr)
+	clock_id = cond->__attr->__clock;
+      /* Tell hurd_thread_cancel how to unblock us.  */
+      ss->cancel_hook = &cancel_me;
+    }
+  __pthread_spin_unlock (&cond->__lock);
+  __spin_unlock (&ss->lock);
+
+  if (cancel)
+    {
+      /* Cancelled on entry.  Just leave the mutex locked.  */
+      mutex = NULL;
+
+      __spin_lock (&ss->lock);
+    }
+  else
+    {
+      /* Release MUTEX before blocking.  */
+      __pthread_mutex_unlock (mutex);
+
+      /* Block the thread.  */
+      if (abstime)
+	err = __pthread_timedblock (self, abstime, clock_id);
+      else
+	{
+	  err = 0;
+	  __pthread_block (self);
+	}
+
+      /* As it was done when enqueueing, prevent hurd_thread_cancel from
+	 suspending us while the condition lock is held.  */
+      __spin_lock (&ss->lock);
+      __pthread_spin_lock (&cond->__lock);
+      if (! self->prevp)
+	/* Another thread removed us from the list of waiters, which means
+	   a wakeup message has been sent.  It was either consumed while
+	   we were blocking, or queued after we timed out and before we
+	   acquired the condition lock, in which case the message queue
+	   must be drained.  */
+	drain = err ? 1 : 0;
+      else
+	{
+	  /* We're still in the list of waiters.  Noone attempted to wake us
+	     up, i.e. we timed out.  */
+	  __pthread_dequeue (self);
+	  drain = 0;
+	}
+      __pthread_spin_unlock (&cond->__lock);
+
+      if (drain)
+	__pthread_block (self);
+    }
+
+  /* Clear the hook, now that we are done blocking.  */
+  ss->cancel_hook = NULL;
+  /* Check the cancellation flag; we might have unblocked due to
+     cancellation rather than a normal pthread_cond_signal or
+     pthread_cond_broadcast (or we might have just happened to get cancelled
+     right after waking up).  */
+  cancel |= ss->cancel;
+  ss->cancel = 0;
+  __spin_unlock (&ss->lock);
+
+  if (mutex)
+    /* Reacquire the mutex and return.  */
+    __pthread_mutex_lock (mutex);
+
+  if (cancel)
+    return EINTR;
+  else if (err)
+    {
+      assert (err == ETIMEDOUT);
+      return err;
+    }
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-hurd-cond-wait.c b/htl/sysdeps/mach/hurd/pt-hurd-cond-wait.c
new file mode 100644
index 0000000..5e7c007
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-hurd-cond-wait.c
@@ -0,0 +1,41 @@
+/* pthread_hurd_cond_wait.  Hurd-specific wait on a condition.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+#include <hurd/signal.h>
+
+#include <pt-internal.h>
+
+/* Implemented in pt-hurd-cond-timedwait.c.  */
+extern int __pthread_hurd_cond_timedwait_internal (pthread_cond_t *cond,
+						   pthread_mutex_t *mutex,
+						   const struct timespec *abstime);
+
+int
+__pthread_hurd_cond_wait_np (pthread_cond_t *cond,
+			     pthread_mutex_t *mutex)
+{
+  error_t err;
+
+  err = __pthread_hurd_cond_timedwait_internal (cond, mutex, NULL);
+  return (err == EINTR);
+}
+
+strong_alias (__pthread_hurd_cond_wait_np, pthread_hurd_cond_wait_np);
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-consistent.c b/htl/sysdeps/mach/hurd/pt-mutex-consistent.c
new file mode 100644
index 0000000..28e9e4a
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-consistent.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutex_consistent (pthread_mutex_t *mtxp)
+{
+  int ret = EINVAL;
+  unsigned int val = mtxp->__lock;
+
+  if ((mtxp->__flags & PTHREAD_MUTEX_ROBUST) != 0 &&
+      (val & LLL_DEAD_OWNER) != 0 &&
+      atomic_compare_and_exchange_bool_acq (&mtxp->__lock,
+        __getpid () | LLL_WAITERS, val) == 0)
+    {
+      /* The mutex is now ours, and it's consistent. */
+      mtxp->__owner_id = _pthread_self()->thread;
+      mtxp->__cnt = 1;
+      ret = 0;
+    }
+
+  return (ret);
+}
+
+weak_alias (pthread_mutex_consistent, pthread_mutex_consistent_np)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-destroy.c b/htl/sysdeps/mach/hurd/pt-mutex-destroy.c
new file mode 100644
index 0000000..2c6acd1
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-destroy.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int _pthread_mutex_destroy (pthread_mutex_t *mtxp)
+{
+  atomic_read_barrier ();
+  if (*(volatile unsigned int *)&mtxp->__lock != 0)
+    return (EBUSY);
+
+  mtxp->__type = -1;
+  return (0);
+}
+
+strong_alias (_pthread_mutex_destroy, pthread_mutex_destroy)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-getprioceiling.c b/htl/sysdeps/mach/hurd/pt-mutex-getprioceiling.c
new file mode 100644
index 0000000..8a8a080
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-getprioceiling.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutex_getprioceiling (const pthread_mutex_t *mtxp, int *clp)
+{
+  (void)mtxp; (void)clp;
+  return (ENOSYS);
+}
+
+stub_warning (pthread_mutex_getprioceiling)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-init.c b/htl/sysdeps/mach/hurd/pt-mutex-init.c
new file mode 100644
index 0000000..af9ed7e
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-init.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+static const pthread_mutexattr_t dfl_attr =
+{
+  .__prioceiling = 0,
+  .__protocol = PTHREAD_PRIO_NONE,
+  .__pshared = PTHREAD_PROCESS_PRIVATE,
+  .__mutex_type = __PTHREAD_MUTEX_TIMED
+};
+
+int _pthread_mutex_init (pthread_mutex_t *mtxp,
+  const pthread_mutexattr_t *attrp)
+{
+  if (attrp == NULL)
+    attrp = &dfl_attr;
+
+  mtxp->__flags = (attrp->__pshared == PTHREAD_PROCESS_SHARED ?
+    GSYNC_SHARED : 0) | ((attrp->__prioceiling & PTHREAD_MUTEX_ROBUST) ?
+      PTHREAD_MUTEX_ROBUST : 0);
+
+  mtxp->__type = attrp->__mutex_type +
+    (attrp->__mutex_type != __PTHREAD_MUTEX_TIMED);
+
+  mtxp->__owner_id = 0;
+  mtxp->__shpid = 0;
+  mtxp->__cnt = 0;
+  mtxp->__lock = 0;
+
+  return (0);
+}
+
+strong_alias (_pthread_mutex_init, pthread_mutex_init)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-lock.c b/htl/sysdeps/mach/hurd/pt-mutex-lock.c
new file mode 100644
index 0000000..5d3c958
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-lock.c
@@ -0,0 +1,79 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int __pthread_mutex_lock (pthread_mutex_t *mtxp)
+{
+  struct __pthread *self;
+  int flags = mtxp->__flags & GSYNC_SHARED;
+  int ret = 0;
+
+  switch (MTX_TYPE (mtxp))
+    {
+      case PT_MTX_NORMAL:
+        lll_lock (&mtxp->__lock, flags);
+        break;
+
+      case PT_MTX_RECURSIVE:
+        self = _pthread_self ();
+        if (mtx_owned_p (mtxp, self, flags))
+          {
+            if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
+              return (EAGAIN);
+
+            ++mtxp->__cnt;
+            return (ret);
+          }
+
+        lll_lock (&mtxp->__lock, flags);
+        mtx_set_owner (mtxp, self, flags);
+        mtxp->__cnt = 1;
+        break;
+
+      case PT_MTX_ERRORCHECK:
+        self = _pthread_self ();
+        if (mtx_owned_p (mtxp, self, flags))
+          return (EDEADLK);
+
+        lll_lock (&mtxp->__lock, flags);
+        mtx_set_owner (mtxp, self, flags);
+        break;
+
+      case PT_MTX_NORMAL     | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_RECURSIVE  | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
+        self = _pthread_self ();
+        ROBUST_LOCK (self, mtxp, __lll_robust_lock, flags);
+        break;
+
+      default:
+        ret = EINVAL;
+        break;
+    }
+
+  return (ret);
+}
+
+strong_alias (__pthread_mutex_lock, _pthread_mutex_lock)
+strong_alias (__pthread_mutex_lock, pthread_mutex_lock)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-setprioceiling.c b/htl/sysdeps/mach/hurd/pt-mutex-setprioceiling.c
new file mode 100644
index 0000000..b88917d
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-setprioceiling.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutex_setprioceiling (pthread_mutex_t *mtxp, int cl, int *prp)
+{
+  (void)mtxp; (void)cl; (void)prp;
+  return (ENOSYS);
+}
+
+stub_warning (pthread_mutex_setprioceiling)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-timedlock.c b/htl/sysdeps/mach/hurd/pt-mutex-timedlock.c
new file mode 100644
index 0000000..3fdd5da
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-timedlock.c
@@ -0,0 +1,80 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutex_timedlock (pthread_mutex_t *mtxp,
+  const struct timespec *tsp)
+{
+  struct __pthread *self;
+  int ret, flags = mtxp->__flags & GSYNC_SHARED;
+
+  switch (MTX_TYPE (mtxp))
+    {
+      case PT_MTX_NORMAL:
+        ret = lll_abstimed_lock (&mtxp->__lock, tsp, flags);
+        break;
+
+      case PT_MTX_RECURSIVE:
+        self = _pthread_self ();
+        if (mtx_owned_p (mtxp, self, flags))
+          {
+            if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
+              return (EAGAIN);
+
+            ++mtxp->__cnt;
+            ret = 0;
+          }
+        else if ((ret = lll_abstimed_lock (&mtxp->__lock,
+            tsp, flags)) == 0)
+          {
+            mtx_set_owner (mtxp, self, flags);
+            mtxp->__cnt = 1;
+          }
+
+        break;
+
+      case PT_MTX_ERRORCHECK:
+        self = _pthread_self ();
+        if (mtx_owned_p (mtxp, self, flags))
+          ret = EDEADLK;
+        else if ((ret = lll_abstimed_lock (&mtxp->__lock,
+            tsp, flags)) == 0)
+          mtx_set_owner (mtxp, self, flags);
+
+        break;
+
+      case PT_MTX_NORMAL     | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_RECURSIVE  | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
+        self = _pthread_self ();
+        ROBUST_LOCK (self, mtxp, lll_robust_abstimed_lock, tsp, flags);
+        break;
+
+      default:
+        ret = EINVAL;
+        break;
+    }
+
+  return (ret);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-transfer-np.c b/htl/sysdeps/mach/hurd/pt-mutex-transfer-np.c
new file mode 100644
index 0000000..410474f
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-transfer-np.c
@@ -0,0 +1,74 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int __pthread_mutex_transfer_np (pthread_mutex_t *mtxp, pthread_t th)
+{
+  struct __pthread *self = _pthread_self ();
+  struct __pthread *pt = __pthread_getid (th);
+
+  if (!pt)
+    return (ESRCH);
+  else if (pt == self)
+    return (0);
+
+  int ret = 0;
+  int flags = mtxp->__flags & GSYNC_SHARED;
+
+  switch (MTX_TYPE (mtxp))
+    {
+      case PT_MTX_NORMAL:
+        break;
+
+      case PT_MTX_RECURSIVE:
+      case PT_MTX_ERRORCHECK:
+        if (!mtx_owned_p (mtxp, self, flags))
+          ret = EPERM;
+        else
+          mtx_set_owner (mtxp, pt, flags);
+
+        break;
+
+      case PT_MTX_NORMAL     | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_RECURSIVE  | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
+        /* Note that this can be used to transfer an inconsistent
+         * mutex as well. The new owner will still have the same
+         * flags as the original. */
+        if (mtxp->__owner_id != self->thread ||
+            (int)(mtxp->__lock & LLL_OWNER_MASK) != __getpid ())
+          ret = EPERM;
+        else
+          mtxp->__owner_id = pt->thread;
+
+        break;
+
+      default:
+        ret = EINVAL;
+    }
+
+  return (ret);
+}
+
+weak_alias (__pthread_mutex_transfer_np, pthread_mutex_transfer_np)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-trylock.c b/htl/sysdeps/mach/hurd/pt-mutex-trylock.c
new file mode 100644
index 0000000..59244e8
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-trylock.c
@@ -0,0 +1,83 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int __pthread_mutex_trylock (pthread_mutex_t *mtxp)
+{
+  struct __pthread *self;
+  int ret;
+
+  switch (MTX_TYPE (mtxp))
+    {
+      case PT_MTX_NORMAL:
+        ret = lll_trylock (&mtxp->__lock);
+        if (ret)
+          ret = EBUSY;
+        break;
+
+      case PT_MTX_RECURSIVE:
+        self = _pthread_self ();
+        if (mtx_owned_p (mtxp, self, mtxp->__flags))
+          {
+            if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
+              return (EAGAIN);
+
+            ++mtxp->__cnt;
+            ret = 0;
+          }
+        else if ((ret = lll_trylock (&mtxp->__lock)) == 0)
+          {
+            mtx_set_owner (mtxp, self, mtxp->__flags);
+            mtxp->__cnt = 1;
+          }
+        else
+          ret = EBUSY;
+
+        break;
+
+      case PT_MTX_ERRORCHECK:
+        self = _pthread_self ();
+        if ((ret = lll_trylock (&mtxp->__lock)) == 0)
+          mtx_set_owner (mtxp, self, mtxp->__flags);
+        else
+          ret = EBUSY;
+        break;
+
+      case PT_MTX_NORMAL     | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_RECURSIVE  | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
+        self = _pthread_self ();
+        ROBUST_LOCK (self, mtxp, __lll_robust_trylock);
+        break;
+
+      default:
+        ret = EINVAL;
+        break;
+    }
+
+  return (ret);
+}
+
+strong_alias (__pthread_mutex_trylock, _pthread_mutex_trylock)
+strong_alias (__pthread_mutex_trylock, pthread_mutex_trylock)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex-unlock.c b/htl/sysdeps/mach/hurd/pt-mutex-unlock.c
new file mode 100644
index 0000000..071f622
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex-unlock.c
@@ -0,0 +1,90 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int __pthread_mutex_unlock (pthread_mutex_t *mtxp)
+{
+  struct __pthread *self;
+  int ret = 0, flags = mtxp->__flags & GSYNC_SHARED;
+
+  switch (MTX_TYPE (mtxp))
+    {
+      case PT_MTX_NORMAL:
+        lll_unlock (&mtxp->__lock, flags);
+        break;
+
+      case PT_MTX_RECURSIVE:
+        self = _pthread_self ();
+        if (!mtx_owned_p (mtxp, self, flags))
+          ret = EPERM;
+        else if (--mtxp->__cnt == 0)
+          {
+            mtxp->__owner_id = mtxp->__shpid = 0;
+            lll_unlock (&mtxp->__lock, flags);
+          }
+
+        break;
+
+      case PT_MTX_ERRORCHECK:
+        self = _pthread_self ();
+        if (!mtx_owned_p (mtxp, self, flags))
+          ret = EPERM;
+        else
+          {
+            mtxp->__owner_id = mtxp->__shpid = 0;
+            lll_unlock (&mtxp->__lock, flags);
+          }
+
+        break;
+
+      case PT_MTX_NORMAL     | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_RECURSIVE  | PTHREAD_MUTEX_ROBUST:
+      case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
+        self = _pthread_self ();
+        if (mtxp->__owner_id == NOTRECOVERABLE_ID)
+          ;   /* Nothing to do. */
+        else if (mtxp->__owner_id != self->thread ||
+            (int)(mtxp->__lock & LLL_OWNER_MASK) != __getpid ())
+          ret = EPERM;
+        else if (--mtxp->__cnt == 0)
+          {
+            /* Release the lock. If it's in an inconsistent
+             * state, mark it as irrecoverable. */
+            mtxp->__owner_id = (mtxp->__lock & LLL_DEAD_OWNER) ?
+              NOTRECOVERABLE_ID : 0;
+            __lll_robust_unlock (&mtxp->__lock, flags);
+          }
+
+        break;
+
+      default:
+        ret = EINVAL;
+        break;
+    }
+
+  return (ret);
+}
+
+strong_alias (__pthread_mutex_unlock, _pthread_mutex_unlock)
+strong_alias (__pthread_mutex_unlock, pthread_mutex_unlock)
diff --git a/htl/sysdeps/mach/hurd/pt-mutex.h b/htl/sysdeps/mach/hurd/pt-mutex.h
new file mode 100644
index 0000000..c67453e
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutex.h
@@ -0,0 +1,92 @@
+/* Internal definitions for pthreads library.
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _PT_MUTEX_H
+#define _PT_MUTEX_H	1
+
+/* Special ID used to signal an unrecoverable robust mutex. */
+#define NOTRECOVERABLE_ID   (1U << 31)
+
+/* Common path for robust mutexes. Assumes the variable 'ret'
+ * is bound in the function this is called from. */
+#define ROBUST_LOCK(self, mtxp, cb, ...)   \
+  if (mtxp->__owner_id == NOTRECOVERABLE_ID)   \
+    return (ENOTRECOVERABLE);   \
+  else if (mtxp->__owner_id == self->thread &&   \
+      __getpid () == (int)(mtxp->__lock & LLL_OWNER_MASK))   \
+    {   \
+      if (mtxp->__type == PT_MTX_RECURSIVE)   \
+        {   \
+          if (__glibc_unlikely (mtxp->__cnt + 1 == 0))   \
+            return (EAGAIN);   \
+          \
+          ++mtxp->__cnt;   \
+          return (0);   \
+        }   \
+      else if (mtxp->__type == PT_MTX_ERRORCHECK)   \
+        return (EDEADLK);   \
+    }   \
+  \
+  ret = cb (&mtxp->__lock, ##__VA_ARGS__);   \
+  if (ret == 0 || ret == EOWNERDEAD)   \
+    {   \
+      if (mtxp->__owner_id == ENOTRECOVERABLE)   \
+        ret = ENOTRECOVERABLE;   \
+      else   \
+        {   \
+          mtxp->__owner_id = self->thread;   \
+          mtxp->__cnt = 1;   \
+          if (ret == EOWNERDEAD)   \
+            {   \
+              mtxp->__lock = mtxp->__lock | LLL_DEAD_OWNER;   \
+              atomic_write_barrier ();   \
+            }   \
+        }   \
+    }   \
+  (void)0
+
+/* Check that a thread owns the mutex. For non-robust, task-shared
+ * objects, we have to check the thread *and* process-id. */
+#define mtx_owned_p(mtx, pt, flags)   \
+  ((mtx)->__owner_id == (pt)->thread &&   \
+    (((flags) & GSYNC_SHARED) == 0 ||   \
+      (mtx)->__shpid == __getpid ()))
+
+/* Record a thread as the owner of the mutex. */
+#define mtx_set_owner(mtx, pt, flags)   \
+  (void)   \
+    ({   \
+       (mtx)->__owner_id = (pt)->thread;   \
+       if ((flags) & GSYNC_SHARED)   \
+         (mtx)->__shpid = __getpid ();   \
+     })
+
+/* Redefined mutex types. The +1 is for binary compatibility. */
+#define PT_MTX_NORMAL       __PTHREAD_MUTEX_TIMED
+#define PT_MTX_RECURSIVE    (__PTHREAD_MUTEX_RECURSIVE + 1)
+#define PT_MTX_ERRORCHECK   (__PTHREAD_MUTEX_ERRORCHECK + 1)
+
+/* Mutex type, including robustness. */
+#define MTX_TYPE(mtxp)   \
+  ((mtxp)->__type | ((mtxp)->__flags & PTHREAD_MUTEX_ROBUST))
+
+extern int __getpid (void) __attribute__ ((const));
+
+#endif /* pt-mutex.h */
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-destroy.c b/htl/sysdeps/mach/hurd/pt-mutexattr-destroy.c
new file mode 100644
index 0000000..ad711ac
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-destroy.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int __pthread_mutexattr_destroy (pthread_mutexattr_t *attrp)
+{
+  (void)attrp;
+  return (0);
+}
+weak_alias (__pthread_mutexattr_destroy, pthread_mutexattr_destroy)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-getprioceiling.c b/htl/sysdeps/mach/hurd/pt-mutexattr-getprioceiling.c
new file mode 100644
index 0000000..bcfc8c8
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-getprioceiling.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *ap, int *clp)
+{
+  (void)ap; (void)clp;
+  return (ENOSYS);
+}
+
+stub_warning (pthread_mutexattr_getprioceiling)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-getprotocol.c b/htl/sysdeps/mach/hurd/pt-mutexattr-getprotocol.c
new file mode 100644
index 0000000..cb94424
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-getprotocol.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_getprotocol (const pthread_mutexattr_t *attrp, int *ptp)
+{
+  *ptp = attrp->__protocol;
+  return (0);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-getpshared.c b/htl/sysdeps/mach/hurd/pt-mutexattr-getpshared.c
new file mode 100644
index 0000000..7639528
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-getpshared.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_getpshared (const pthread_mutexattr_t *attrp, int *outp)
+{
+  *outp = attrp->__pshared;
+  return (0);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-getrobust.c b/htl/sysdeps/mach/hurd/pt-mutexattr-getrobust.c
new file mode 100644
index 0000000..86a0909
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-getrobust.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_getrobust (const pthread_mutexattr_t *attrp, int *outp)
+{
+  *outp = (attrp->__prioceiling & PTHREAD_MUTEX_ROBUST) ?
+    PTHREAD_MUTEX_ROBUST : PTHREAD_MUTEX_STALLED;
+  return (0);
+}
+
+weak_alias (pthread_mutexattr_getrobust, pthread_mutexattr_getrobust_np)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-gettype.c b/htl/sysdeps/mach/hurd/pt-mutexattr-gettype.c
new file mode 100644
index 0000000..754cc04
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-gettype.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_gettype (const pthread_mutexattr_t *attrp, int *outp)
+{
+  *outp = attrp->__mutex_type;
+  return (0);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-init.c b/htl/sysdeps/mach/hurd/pt-mutexattr-init.c
new file mode 100644
index 0000000..4cac661
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-init.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+static const pthread_mutexattr_t dfl_attr =
+{
+  .__prioceiling = 0,
+  .__protocol = PTHREAD_PRIO_NONE,
+  .__pshared = PTHREAD_PROCESS_PRIVATE,
+  .__mutex_type = __PTHREAD_MUTEX_TIMED
+};
+
+int __pthread_mutexattr_init (pthread_mutexattr_t *attrp)
+{
+  *attrp = dfl_attr;
+  return (0);
+}
+weak_alias (__pthread_mutexattr_init, pthread_mutexattr_init)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-setprioceiling.c b/htl/sysdeps/mach/hurd/pt-mutexattr-setprioceiling.c
new file mode 100644
index 0000000..d399050
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-setprioceiling.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attrp, int cl)
+{
+  (void)attrp; (void)cl;
+  return (ENOSYS);
+}
+
+stub_warning (pthread_mutexattr_setprioceiling)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-setprotocol.c b/htl/sysdeps/mach/hurd/pt-mutexattr-setprotocol.c
new file mode 100644
index 0000000..9f7f152
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-setprotocol.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_setprotocol (pthread_mutexattr_t *attrp, int proto)
+{
+  (void)attrp;
+  return (proto == PTHREAD_PRIO_NONE ? 0 :
+    proto != PTHREAD_PRIO_INHERIT &&
+    proto != PTHREAD_PRIO_PROTECT ? EINVAL : ENOTSUP);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-setpshared.c b/htl/sysdeps/mach/hurd/pt-mutexattr-setpshared.c
new file mode 100644
index 0000000..c10dfa0
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-setpshared.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_setpshared (pthread_mutexattr_t *attrp, int pshared)
+{
+  if (pshared != PTHREAD_PROCESS_PRIVATE &&
+      pshared != PTHREAD_PROCESS_SHARED)
+    return (EINVAL);
+
+  attrp->__pshared = pshared;
+  return (0);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-setrobust.c b/htl/sysdeps/mach/hurd/pt-mutexattr-setrobust.c
new file mode 100644
index 0000000..a90e747
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-setrobust.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int pthread_mutexattr_setrobust (pthread_mutexattr_t *attrp, int robust)
+{
+  if (robust != PTHREAD_MUTEX_ROBUST &&
+      robust != PTHREAD_MUTEX_STALLED)
+    return (EINVAL);
+
+  attrp->__prioceiling |= robust;
+  return (0);
+}
+
+weak_alias (pthread_mutexattr_setrobust, pthread_mutexattr_setrobust_np)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr-settype.c b/htl/sysdeps/mach/hurd/pt-mutexattr-settype.c
new file mode 100644
index 0000000..67ed4f5
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr-settype.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   Contributed by Agustina Arzille <avarzille@riseup.net>, 2016.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License
+   as published by the Free Software Foundation; either
+   version 2 of the license, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+   GNU Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <pt-internal.h>
+#include "pt-mutex.h"
+#include <hurdlock.h>
+
+int __pthread_mutexattr_settype (pthread_mutexattr_t *attrp, int type)
+{
+  if (type < 0 || type > __PTHREAD_MUTEX_RECURSIVE)
+    return (EINVAL);
+
+  attrp->__mutex_type = type;
+  return (0);
+}
+weak_alias (__pthread_mutexattr_settype, pthread_mutexattr_settype)
diff --git a/htl/sysdeps/mach/hurd/pt-mutexattr.c b/htl/sysdeps/mach/hurd/pt-mutexattr.c
new file mode 100644
index 0000000..40a8c17
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-mutexattr.c
@@ -0,0 +1 @@
+/* empty */
diff --git a/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c b/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c
new file mode 100644
index 0000000..d5e28d2
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-sigstate-destroy.c
@@ -0,0 +1,28 @@
+/* Destroy the signal state.  Hurd on Mach version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+void
+__pthread_sigstate_destroy (struct __pthread *thread)
+{
+  _hurd_sigstate_delete (thread->kernel_thread);
+}
diff --git a/htl/sysdeps/mach/hurd/pt-sigstate-init.c b/htl/sysdeps/mach/hurd/pt-sigstate-init.c
new file mode 100644
index 0000000..4848f2e
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-sigstate-init.c
@@ -0,0 +1,45 @@
+/* Initialize the signal state.  Hurd on Mach version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <pt-internal.h>
+#include <hurd/signal.h>
+
+error_t
+__pthread_sigstate_init (struct __pthread *thread)
+{
+  static int do_init_global;
+
+  /* Mark the thread as a global signal receiver so as to conform with
+     the pthread semantics.  However, we must be careful.  The first
+     pthread created is the main thread, during libpthread initialization.
+     We must not mark it, otherwise the sigprocmask call in
+     __pthread_create would try to access _hurd_global_sigstate,
+     which is not initialized yet.  When glibc runs _hurdsig_init later
+     on, the message thread is created, which must not be marked either.  */
+  if (do_init_global)
+    {
+      struct hurd_sigstate *ss = _hurd_thread_sigstate (thread->kernel_thread);
+      _hurd_sigstate_set_global_rcv (ss);
+    }
+  else if (__pthread_num_threads >= 2)
+    do_init_global = 1;
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-sigstate.c b/htl/sysdeps/mach/hurd/pt-sigstate.c
new file mode 100644
index 0000000..74fd72a
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-sigstate.c
@@ -0,0 +1,80 @@
+/* Set a thread's signal state.  Hurd on Mach version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <assert.h>
+#include <signal.h>
+#include <hurd/signal.h>
+#include <hurd/msg.h>
+
+#include <pt-internal.h>
+
+error_t
+__pthread_sigstate (struct __pthread *thread, int how,
+		    const sigset_t *set, sigset_t *oset,
+		    int clear_pending)
+{
+  error_t err = 0;
+  struct hurd_sigstate *ss;
+  sigset_t pending;
+
+  ss = _hurd_thread_sigstate (thread->kernel_thread);
+  assert (ss);
+
+  _hurd_sigstate_lock (ss);
+
+  if (oset)
+    *oset = ss->blocked;
+
+  if (set)
+    {
+      switch (how)
+	{
+	case SIG_BLOCK:
+	  ss->blocked |= *set;
+	  break;
+
+	case SIG_SETMASK:
+	  ss->blocked = *set;
+	  break;
+
+	case SIG_UNBLOCK:
+	  ss->blocked &= ~*set;
+	  break;
+
+	default:
+	  err = EINVAL;
+	  break;
+	}
+      ss->blocked &= ~_SIG_CANT_MASK;
+    }
+
+  if (! err && clear_pending)
+    __sigemptyset (&ss->pending);
+
+  pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
+  _hurd_sigstate_unlock (ss);
+
+  if (! err && pending)
+    /* Send a message to the signal thread so it
+       will wake up and check for pending signals.  */
+    __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
+
+  return err;
+}
diff --git a/htl/sysdeps/mach/hurd/pt-sysdep.c b/htl/sysdeps/mach/hurd/pt-sysdep.c
new file mode 100644
index 0000000..939194b
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-sysdep.c
@@ -0,0 +1,98 @@
+/* System dependent pthreads code.  Hurd version.
+   Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include <mach.h>
+#include <mach/mig_support.h>
+
+#include <pt-internal.h>
+
+__thread struct __pthread *___pthread_self;
+
+/* Forward.  */
+static void *init_routine (void);
+
+/* OK, the name of this variable isn't really appropriate, but I don't
+   want to change it yet.  */
+void *(*_cthread_init_routine)(void) = &init_routine;
+
+/* This function is called from the Hurd-specific startup code.  It
+   should return a new stack pointer for the main thread.  The caller
+   will switch to this new stack before doing anything serious.  */
+static void *
+_init_routine (void *stack)
+{
+  struct __pthread *thread;
+  int err;
+  pthread_attr_t attr, *attrp = 0;
+
+  if (__pthread_threads)
+    /* Already initialized */
+    return 0;
+
+  /* Initialize the library.  */
+  ___pthread_init ();
+
+  if (stack)
+    {
+      /* We are getting initialized due to dlopening a library using libpthread
+	 while the main program was not linked against libpthread.  */
+      /* Avoid allocating another stack */
+      attrp = &attr;
+      pthread_attr_init(attrp);
+      pthread_attr_setstack(attrp, stack, __vm_page_size);
+    }
+
+  /* Create the pthread structure for the main thread (i.e. us).  */
+  err = __pthread_create_internal (&thread, attrp, 0, 0);
+  assert_perror (err);
+
+  /* XXX The caller copies the command line arguments and the environment
+     to the new stack.  Pretend it wasn't allocated so that it remains
+     valid if the main thread terminates.  */
+  thread->stack = 0;
+
+  ___pthread_self = thread;
+
+  /* Decrease the number of threads, to take into account that the
+     signal thread (which will be created by the glibc startup code
+     when we return from here) shouldn't be seen as a user thread.  */
+  __pthread_total--;
+
+  /* Make MiG code thread aware.  */
+  __mig_init (thread->stackaddr);
+
+  return thread->mcontext.sp;
+}
+
+static void *
+init_routine (void)
+{
+  return _init_routine (0);
+}
+
+#ifdef SHARED
+__attribute__ ((constructor)) static void dynamic_init_routine(void)
+{
+  _init_routine (__libc_stack_end);
+}
+#endif
diff --git a/htl/sysdeps/mach/hurd/pt-sysdep.h b/htl/sysdeps/mach/hurd/pt-sysdep.h
new file mode 100644
index 0000000..35912a3
--- /dev/null
+++ b/htl/sysdeps/mach/hurd/pt-sysdep.h
@@ -0,0 +1,67 @@
+/* Internal defenitions for pthreads library.
+   Copyright (C) 2000, 2002, 2007, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _PT_SYSDEP_H
+#define _PT_SYSDEP_H	1
+
+#include <mach.h>
+
+/* XXX */
+#define _POSIX_THREAD_THREADS_MAX	64
+
+/* The default stack size.  */
+#define PTHREAD_STACK_DEFAULT	(2 * 1024 * 1024)
+
+#define PTHREAD_SYSDEP_MEMBERS \
+  thread_t kernel_thread;      \
+  mach_msg_header_t wakeupmsg;
+
+extern __thread struct __pthread *___pthread_self;
+#define _pthread_self()                                            \
+	({                                                         \
+	  struct __pthread *thread;                                \
+	                                                           \
+	  assert (__pthread_threads);                              \
+	  thread = ___pthread_self;                                \
+	                                                           \
+	  assert (thread);                                         \
+	  assert (({ mach_port_t ktid = __mach_thread_self ();     \
+                     int ok = thread->kernel_thread == ktid;       \
+                     __mach_port_deallocate (__mach_task_self (), ktid);\
+                     ok; }));                                      \
+          thread;                                                  \
+         })
+
+extern inline void
+__attribute__((__always_inline__))
+__pthread_stack_dealloc (void *stackaddr, size_t stacksize)
+{
+  __vm_deallocate (__mach_task_self (), (vm_offset_t) stackaddr, stacksize);
+}
+
+/* Change thread THREAD's program counter to PC if SET_PC is true,
+   its stack pointer to SP if SET_IP is true, and its thread pointer
+   to TP if SET_TP is true.  */
+extern int __thread_set_pcsptp (thread_t thread,
+			      int set_pc, void *pc,
+			      int set_sp, void *sp,
+			      int set_tp, void *tp);
+
+
+#endif /* pt-sysdep.h */
diff --git a/htl/sysdeps/mach/pt-block.c b/htl/sysdeps/mach/pt-block.c
new file mode 100644
index 0000000..a947b27
--- /dev/null
+++ b/htl/sysdeps/mach/pt-block.c
@@ -0,0 +1,39 @@
+/* Block a thread.  Mach version.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <mach.h>
+#include <mach/message.h>
+
+#include <pt-internal.h>
+
+/* Block THREAD.  */
+void
+__pthread_block (struct __pthread *thread)
+{
+  mach_msg_header_t msg;
+  error_t err;
+
+  err = __mach_msg (&msg, MACH_RCV_MSG, 0, sizeof msg,
+		    thread->wakeupmsg.msgh_remote_port,
+		    MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
+  assert_perror (err);
+}
diff --git a/htl/sysdeps/mach/pt-spin.c b/htl/sysdeps/mach/pt-spin.c
new file mode 100644
index 0000000..0cf1c49
--- /dev/null
+++ b/htl/sysdeps/mach/pt-spin.c
@@ -0,0 +1,32 @@
+/* Spin locks.  Mach version.
+   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <machine-lock.h>
+
+/* In glibc.  */
+extern void __spin_lock_solid (__spin_lock_t *lock);
+
+/* Lock the spin lock object LOCK.  If the lock is held by another
+   thread spin until it becomes available.  */
+int
+_pthread_spin_lock (__spin_lock_t *lock)
+{
+  __spin_lock_solid (lock);
+  return 0;
+}
diff --git a/htl/sysdeps/mach/pt-stack-alloc.c b/htl/sysdeps/mach/pt-stack-alloc.c
new file mode 100644
index 0000000..121c189
--- /dev/null
+++ b/htl/sysdeps/mach/pt-stack-alloc.c
@@ -0,0 +1,69 @@
+/* Allocate a new stack.  Mach version.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+
+#include <mach.h>
+#include <mach/machine/vm_param.h>
+
+#include <pt-internal.h>
+
+/* The next address to use for stack allocation.  */
+static vm_address_t next_stack_base = VM_MIN_ADDRESS;
+
+
+/* Allocate a new stack of size STACKSIZE.  If successful, store the
+   address of the newly allocated stack in *STACKADDR and return 0.
+   Otherwise return an error code (EINVAL for an invalid stack size,
+   EAGAIN if the system lacked the necessary resources to allocate a
+   new stack).  */
+int
+__pthread_stack_alloc (void **stackaddr, size_t stacksize)
+{
+  vm_offset_t base;
+  int i = 0;
+
+ get_stack:
+  i ++;
+  for (base = next_stack_base;
+       base < VM_MAX_ADDRESS
+	 && __vm_allocate (__mach_task_self (), &base,
+			   stacksize, FALSE) != KERN_SUCCESS;
+       base += stacksize)
+    ;
+
+  if (base >= VM_MAX_ADDRESS)
+    {
+      if (i == 1)
+	{
+	  next_stack_base = VM_MIN_ADDRESS;
+	  goto get_stack;
+	}
+      else
+	return EAGAIN;
+    }
+
+  if (base >= VM_MAX_ADDRESS)
+    return EAGAIN;
+
+  next_stack_base = base + stacksize;
+
+  (*stackaddr) = (void *) base;
+  return 0;
+}
diff --git a/htl/sysdeps/mach/pt-thread-alloc.c b/htl/sysdeps/mach/pt-thread-alloc.c
new file mode 100644
index 0000000..76e5660
--- /dev/null
+++ b/htl/sysdeps/mach/pt-thread-alloc.c
@@ -0,0 +1,95 @@
+/* Start thread.  Mach version.
+   Copyright (C) 2000, 2002, 2005, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+#include <mach.h>
+
+#include <pt-internal.h>
+
+/* Prepare a wakeup message.  */
+static error_t
+create_wakeupmsg (struct __pthread *thread)
+{
+  kern_return_t err;
+
+  /* Build wakeup message.  */
+  thread->wakeupmsg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_COPY_SEND, 0);
+  thread->wakeupmsg.msgh_size = 0;
+
+  err = __mach_port_allocate (__mach_task_self (), MACH_PORT_RIGHT_RECEIVE,
+			      &thread->wakeupmsg.msgh_remote_port);
+  if (err)
+    return EAGAIN;
+
+  thread->wakeupmsg.msgh_local_port = MACH_PORT_NULL;
+  thread->wakeupmsg.msgh_seqno = 0;
+  thread->wakeupmsg.msgh_id = 0;
+
+  err = __mach_port_insert_right (__mach_task_self (),
+				  thread->wakeupmsg.msgh_remote_port,
+				  thread->wakeupmsg.msgh_remote_port,
+				  MACH_MSG_TYPE_MAKE_SEND);
+  if (err)
+    {
+      __mach_port_destroy (__mach_task_self (),
+			   thread->wakeupmsg.msgh_remote_port);
+      return EAGAIN;
+    }
+
+  /* No need to queue more than one wakeup message on this port.  */
+  __mach_port_set_qlimit (__mach_task_self (),
+			  thread->wakeupmsg.msgh_remote_port, 1);
+
+  return 0;
+}
+
+/* Allocate any resouces for THREAD.  The new kernel thread should not
+   be eligible to be scheduled.  */
+int
+__pthread_thread_alloc (struct __pthread *thread)
+{
+  static int do_create;
+  error_t err;
+
+  err = create_wakeupmsg (thread);
+  if (err)
+    return err;
+
+  if (! do_create)
+    {
+      assert (__pthread_total == 0);
+      thread->kernel_thread = __mach_thread_self ();
+      do_create = 1;
+    }
+  else
+    {
+      err = __thread_create (__mach_task_self (), &thread->kernel_thread);
+      if (err)
+	{
+	  __mach_port_destroy (__mach_task_self (),
+			       thread->wakeupmsg.msgh_remote_port);
+	  return EAGAIN;
+	}
+    }
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/pt-thread-start.c b/htl/sysdeps/mach/pt-thread-start.c
new file mode 100644
index 0000000..df490ab
--- /dev/null
+++ b/htl/sysdeps/mach/pt-thread-start.c
@@ -0,0 +1,51 @@
+/* Start thread.  Mach version.
+   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <mach.h>
+
+#include <pt-internal.h>
+
+/* Start THREAD.  Get the kernel thread scheduled and running.  */
+int
+__pthread_thread_start (struct __pthread *thread)
+{
+  static int do_start;
+  error_t err;
+
+  if (! do_start)
+    {
+      /* The main thread is already running: do nothing.  */
+      assert (__pthread_total == 1);
+      assert (({ mach_port_t ktid = __mach_thread_self ();
+                 int ok = thread->kernel_thread == ktid;
+                 __mach_port_deallocate (__mach_task_self (),
+					 thread->kernel_thread);
+		 ok; }));
+      do_start = 1;
+    }
+  else
+    {
+      err = __thread_resume (thread->kernel_thread);
+      assert_perror (err);
+    }
+
+  return 0;
+}
diff --git a/htl/sysdeps/mach/pt-thread-terminate.c b/htl/sysdeps/mach/pt-thread-terminate.c
new file mode 100644
index 0000000..5d9da26
--- /dev/null
+++ b/htl/sysdeps/mach/pt-thread-terminate.c
@@ -0,0 +1,85 @@
+/* Deallocate the kernel thread resources.  Mach version.
+   Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <mach.h>
+
+#include <mach/mig_support.h>
+
+#include <pt-internal.h>
+
+/* Terminate the kernel thread associated with THREAD, and deallocate its
+   right reference and its stack.  The function also drops a reference
+   on THREAD.  */
+void
+__pthread_thread_terminate (struct __pthread *thread)
+{
+  thread_t kernel_thread, self_ktid;
+  mach_port_t wakeup_port, reply_port;
+  void *stackaddr;
+  size_t stacksize;
+  error_t err;
+
+  kernel_thread = thread->kernel_thread;
+
+  if (thread->stack)
+    {
+      stackaddr = thread->stackaddr;
+      stacksize = ((thread->guardsize + __vm_page_size-1)
+		  / __vm_page_size) * __vm_page_size
+		  + thread->stacksize;
+    }
+  else
+    {
+      stackaddr = NULL;
+      stacksize = 0;
+    }
+
+  wakeup_port = thread->wakeupmsg.msgh_remote_port;
+
+  /* Each thread has its own reply port, allocated from MiG stub code calling
+     __mig_get_reply_port.  Destroying it is a bit tricky because the calls
+     involved are also RPCs, causing the creation of a new reply port if
+     currently null. The __thread_terminate_release call is actually a one way
+     simple routine designed not to require a reply port.  */
+  self_ktid = __mach_thread_self ();
+  reply_port = (self_ktid == kernel_thread)
+	       ? __mig_get_reply_port ()
+	       : MACH_PORT_NULL;
+  __mach_port_deallocate (__mach_task_self (), self_ktid);
+
+  /* Finally done with the thread structure.  */
+  __pthread_dealloc (thread);
+
+  /* The wake up port is now no longer needed.  */
+  __mach_port_destroy (__mach_task_self (), wakeup_port);
+
+  /* Terminate and release all that's left.  */
+  err = __thread_terminate_release (kernel_thread, mach_task_self (),
+				    kernel_thread, reply_port,
+				    (vm_address_t) stackaddr, stacksize);
+
+  /* The kernel does not support it yet.  Leak but at least terminate
+     correctly.  */
+  err = __thread_terminate (kernel_thread);
+
+  /* We are out of luck.  */
+  assert_perror (err);
+}
diff --git a/htl/sysdeps/mach/pt-timedblock.c b/htl/sysdeps/mach/pt-timedblock.c
new file mode 100644
index 0000000..d72ef73
--- /dev/null
+++ b/htl/sysdeps/mach/pt-timedblock.c
@@ -0,0 +1,68 @@
+/* Block a thread with a timeout.  Mach version.
+   Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/time.h>
+
+#include <mach.h>
+#include <mach/message.h>
+
+#include <pt-internal.h>
+
+/* Block THREAD.  */
+error_t
+__pthread_timedblock (struct __pthread *thread,
+		      const struct timespec *abstime,
+		      clockid_t clock_id)
+{
+  error_t err;
+  mach_msg_header_t msg;
+  mach_msg_timeout_t timeout;
+  struct timespec now;
+
+  /* We have an absolute time and now we have to convert it to a
+     relative time.  Arg.  */
+
+  err = clock_gettime (clock_id, &now);
+  assert (! err);
+
+  if (now.tv_sec > abstime->tv_sec
+      || (now.tv_sec == abstime->tv_sec
+	  && now.tv_nsec > abstime->tv_nsec))
+    return ETIMEDOUT;
+
+  timeout = (abstime->tv_sec - now.tv_sec) * 1000;
+
+  if (abstime->tv_nsec >= now.tv_nsec)
+    timeout += (abstime->tv_nsec - now.tv_nsec + 999999) / 1000000;
+  else
+    /* Need to do a carry.  */
+    timeout -= (now.tv_nsec - abstime->tv_nsec + 999999) / 1000000;
+
+  err = __mach_msg (&msg, MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0,
+		    sizeof msg, thread->wakeupmsg.msgh_remote_port,
+		    timeout, MACH_PORT_NULL);
+  if (err == EMACH_RCV_TIMED_OUT)
+    return ETIMEDOUT;
+
+  assert_perror (err);
+  return 0;
+}
diff --git a/htl/sysdeps/mach/pt-wakeup.c b/htl/sysdeps/mach/pt-wakeup.c
new file mode 100644
index 0000000..c2eb9ca
--- /dev/null
+++ b/htl/sysdeps/mach/pt-wakeup.c
@@ -0,0 +1,38 @@
+/* Wakeup a thread.  Mach version.
+   Copyright (C) 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <mach.h>
+#include <mach/message.h>
+
+#include <pt-internal.h>
+
+/* Wakeup THREAD.  */
+void
+__pthread_wakeup (struct __pthread *thread)
+{
+  error_t err;
+
+  err = __mach_msg (&thread->wakeupmsg, MACH_SEND_MSG | MACH_SEND_TIMEOUT,
+		    sizeof (thread->wakeupmsg), 0, MACH_PORT_NULL,
+		    0 , MACH_PORT_NULL);
+  assert_perror (err);
+}
diff --git a/htl/sysdeps/posix/pt-spin.c b/htl/sysdeps/posix/pt-spin.c
new file mode 100644
index 0000000..07f8936
--- /dev/null
+++ b/htl/sysdeps/posix/pt-spin.c
@@ -0,0 +1,51 @@
+/* Spin locks.
+   Copyright (C) 2000, 2004, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <pthread.h>
+#include <sched.h>
+
+/* The default for single processor machines; don't spin, it's
+   pointless.  */
+#ifndef __PTHREAD_SPIN_COUNT
+# define __PTHREAD_SPIN_COUNT 1
+#endif
+
+/* The number of times to spin while trying to lock a spin lock object
+   before yielding the processor. */
+int __pthread_spin_count = __PTHREAD_SPIN_COUNT;
+
+
+/* Lock the spin lock object LOCK.  If the lock is held by another
+   thread spin until it becomes available.  */
+int
+_pthread_spin_lock (__pthread_spinlock_t *lock)
+{
+  int i;
+
+  while (1)
+    {
+      for (i = 0; i < __pthread_spin_count; i++)
+	{
+	  if (__pthread_spin_trylock (lock) == 0)
+	    return 0;
+	}
+
+      __sched_yield ();
+    }
+}
diff --git a/htl/sysdeps/pthread/Makefile b/htl/sysdeps/pthread/Makefile
new file mode 100644
index 0000000..12bb54e
--- /dev/null
+++ b/htl/sysdeps/pthread/Makefile
@@ -0,0 +1,7 @@
+ifeq ($(subdir),rt)
+librt-sysdep_routines += timer_routines
+endif
+
+ifeq ($(subdir),posix)
+CFLAGS-confstr.c += -DLIBPTHREAD_VERSION='"HTL $(version)"'
+endif
diff --git a/htl/sysdeps/pthread/Versions b/htl/sysdeps/pthread/Versions
new file mode 100644
index 0000000..3a3b1e8
--- /dev/null
+++ b/htl/sysdeps/pthread/Versions
@@ -0,0 +1,15 @@
+libc {
+  GLIBC_2.2 {
+    # XXX
+    __vm_deallocate; __mach_port_insert_right; __mach_reply_port;
+    __mig_init; __vm_allocate; __mach_port_allocate;
+
+    # functions used in inline functions or macros
+    __pthread_spin_destroy; __pthread_spin_init; __pthread_spin_lock;
+    _pthread_spin_lock; __pthread_spin_trylock; __pthread_spin_unlock;
+
+    # p*
+    pthread_spin_destroy; pthread_spin_init; pthread_spin_lock;
+    pthread_spin_trylock; pthread_spin_unlock;
+  }
+}
diff --git a/htl/sysdeps/pthread/bits/barrier-attr.h b/htl/sysdeps/pthread/bits/barrier-attr.h
new file mode 100644
index 0000000..7734069
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/barrier-attr.h
@@ -0,0 +1,32 @@
+/* Thread barrier attribute type.  Generic version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_BARRIER_ATTR_H
+#define _BITS_BARRIER_ATTR_H	1
+
+enum __pthread_process_shared;
+
+/* This structure describes the attributes of a POSIX thread barrier.
+   Note that not all of them are supported on all systems.  */
+struct __pthread_barrierattr
+{
+  enum __pthread_process_shared __pshared;
+};
+
+#endif /* bits/barrier-attr.h */
diff --git a/htl/sysdeps/pthread/bits/barrier.h b/htl/sysdeps/pthread/bits/barrier.h
new file mode 100644
index 0000000..dabe86f
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/barrier.h
@@ -0,0 +1,39 @@
+/* Thread barrier attribute type.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_BARRIER_H
+#define _BITS_BARRIER_H	1
+
+#include <bits/spin-lock.h>
+
+/* This structure describes the attributes of a POSIX barrier.  */
+struct __pthread_barrier
+{
+  __pthread_spinlock_t __lock;
+  struct __pthread *__queue; /* List of waiters.  */
+  unsigned __pending;	/* Number of that still need to wait on
+			   barrier.  */
+  unsigned __count;	/* Number of threads that must wait before
+			   barrier is passed.  */
+  struct __pthread_barrierattr *__attr;
+  void *__data;
+};
+
+
+#endif /* bits/barrier.h */
diff --git a/htl/sysdeps/pthread/bits/cancelation.h b/htl/sysdeps/pthread/bits/cancelation.h
new file mode 100644
index 0000000..42c0a3a
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/cancelation.h
@@ -0,0 +1,51 @@
+/* Cancelation.  Generic version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_CANCELATION_H
+#define _BITS_CANCELATION_H	1
+
+struct __pthread_cancelation_handler
+{
+  void (*__handler)(void *);
+  void *__arg;
+  struct __pthread_cancelation_handler *__next;
+};
+
+/* Returns the thread local location of the cleanup handler stack.  */
+struct __pthread_cancelation_handler **__pthread_get_cleanup_stack (void);
+
+#define __pthread_cleanup_push(rt, rtarg) \
+	{ \
+	  struct __pthread_cancelation_handler **__handlers \
+	    = __pthread_get_cleanup_stack (); \
+	  struct __pthread_cancelation_handler __handler = \
+	    { \
+	      (rt), \
+	      (rtarg), \
+	      *__handlers \
+	    }; \
+	  *__handlers = &__handler;
+
+#define __pthread_cleanup_pop(execute) \
+	  if (execute) \
+	    __handler.__handler (__handler.__arg); \
+	  *__handlers = __handler.__next; \
+	}
+
+#endif /* _BITS_CANCELATION_H */
diff --git a/htl/sysdeps/pthread/bits/condition-attr.h b/htl/sysdeps/pthread/bits/condition-attr.h
new file mode 100644
index 0000000..19c92bb
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/condition-attr.h
@@ -0,0 +1,34 @@
+/* Condition attribute type.  Generic version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_CONDITION_ATTR_H
+#define _BITS_CONDITION_ATTR_H	1
+
+#include <bits/types.h>
+
+enum __pthread_process_shared;
+
+/* User visible part of a condition attribute variable.  */
+struct __pthread_condattr
+  {
+    enum __pthread_process_shared __pshared;
+    __clockid_t __clock;
+  };
+
+#endif /* bits/condition.h */
diff --git a/htl/sysdeps/pthread/bits/condition.h b/htl/sysdeps/pthread/bits/condition.h
new file mode 100644
index 0000000..bf13ada
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/condition.h
@@ -0,0 +1,39 @@
+/* Condition type.  Generic version.
+   Copyright (C) 2000, 2005, 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_CONDITION_H
+#define _BITS_CONDITION_H	1
+
+#include <bits/spin-lock.h>
+
+/* User visible part of a condition variable.  */
+struct __pthread_cond
+  {
+    __pthread_spinlock_t __lock;
+    struct __pthread *__queue;
+    struct __pthread_condattr *__attr;
+    struct __pthread_condimpl *__impl;
+    void *__data;
+  };
+
+/* Initializer for a condition variable.  */
+#define __PTHREAD_COND_INITIALIZER \
+  { __PTHREAD_SPIN_LOCK_INITIALIZER, NULL, NULL, NULL, NULL }
+
+#endif /* bits/condition.h */
diff --git a/htl/sysdeps/pthread/bits/mutex-attr.h b/htl/sysdeps/pthread/bits/mutex-attr.h
new file mode 100644
index 0000000..f3d0752
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/mutex-attr.h
@@ -0,0 +1,41 @@
+/* Mutex attribute type.  Generic version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_MUTEX_ATTR_H
+#define _BITS_MUTEX_ATTR_H	1
+
+enum __pthread_mutex_protocol;
+enum __pthread_process_shared;
+enum __pthread_mutex_type;
+
+/* This structure describes the attributes of a POSIX mutex
+   attribute.  */
+struct __pthread_mutexattr
+{
+  int __prioceiling;
+  enum __pthread_mutex_protocol __protocol;
+  enum __pthread_process_shared __pshared;
+  enum __pthread_mutex_type __mutex_type;
+};
+
+/* Attributes for a recursive mutex.  */
+extern const struct __pthread_mutexattr __pthread_errorcheck_mutexattr;
+extern const struct __pthread_mutexattr __pthread_recursive_mutexattr;
+
+#endif /* bits/mutex-attr.h */
diff --git a/htl/sysdeps/pthread/bits/mutex.h b/htl/sysdeps/pthread/bits/mutex.h
new file mode 100644
index 0000000..3120237
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/mutex.h
@@ -0,0 +1,75 @@
+/* Mutex type.  Generic version.
+
+   Copyright (C) 2000, 2002, 2005, 2006, 2007, 2008, 2009
+     Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_MUTEX_H
+
+#ifndef __need_pthread_mutex
+# define _BITS_MUTEX_H	1
+#endif
+
+#ifndef __pthread_mutex_defined
+# if defined __need_pthread_mutex || defined _BITS_MUTEX_H
+#  undef __need_pthread_mutex
+#  define __pthread_mutex_defined
+
+#  include <bits/spin-lock.h>
+#  include <bits/mutex-attr.h>
+
+/* User visible part of a mutex.  */
+struct __pthread_mutex
+  {
+    __pthread_spinlock_t __held;
+    __pthread_spinlock_t __lock;
+    /* In cthreads, mutex_init does not initialized thre third
+       pointer, as such, we cannot rely on its value for anything.  */
+    char *__cthreadscompat1;
+    struct __pthread *__queue;
+    struct __pthread_mutexattr *__attr;
+    void *__data;
+    /*  Up to this point, we are completely compatible with cthreads
+	and what libc expects.  */
+    void *__owner;
+    unsigned __locks;
+    /* If NULL then the default attributes apply.  */
+  };
+
+/* Initializer for a mutex.  N.B.  this also happens to be compatible
+   with the cthread mutex initializer.  */
+#  define __PTHREAD_MUTEX_INITIALIZER \
+    { __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0, 0 }
+
+#  define __PTHREAD_ERRORCHECK_MUTEXATTR ((struct __pthread_mutexattr *) ((unsigned long) __PTHREAD_MUTEX_ERRORCHECK + 1))
+
+#  define __PTHREAD_ERRORCHECK_MUTEX_INITIALIZER \
+    { __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0,	\
+	__PTHREAD_ERRORCHECK_MUTEXATTR, 0, 0, 0 }
+
+#  define __PTHREAD_RECURSIVE_MUTEXATTR ((struct __pthread_mutexattr *) ((unsigned long) __PTHREAD_MUTEX_RECURSIVE + 1))
+
+#  define __PTHREAD_RECURSIVE_MUTEX_INITIALIZER \
+    { __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0,	\
+	__PTHREAD_RECURSIVE_MUTEXATTR, 0, 0, 0 }
+
+# endif
+#endif /* Not __pthread_mutex_defined.  */
+
+#endif /* bits/mutex.h */
diff --git a/htl/sysdeps/pthread/bits/once.h b/htl/sysdeps/pthread/bits/once.h
new file mode 100644
index 0000000..53dbfd3
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/once.h
@@ -0,0 +1,34 @@
+/* Dynamic package initialization data structures.  Generic version.
+   Copyright (C) 2002, 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_ONCE_H
+#define _BITS_ONCE_H	1
+
+#include <bits/spin-lock.h>
+
+struct __pthread_once
+{
+  int __run;
+  __pthread_spinlock_t __lock;
+};
+
+#define __PTHREAD_ONCE_INIT \
+	(struct __pthread_once) { 0, __PTHREAD_SPIN_LOCK_INITIALIZER }
+
+#endif /* bits/once.h */
diff --git a/htl/sysdeps/pthread/bits/pthread-np.h b/htl/sysdeps/pthread/bits/pthread-np.h
new file mode 100644
index 0000000..d5ddbb0
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/pthread-np.h
@@ -0,0 +1,27 @@
+/* Non-portable functions. Generic version.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/*
+ * Never include this file directly; use <pthread.h> or <cthreads.h> instead.
+ */
+
+#ifndef _BITS_PTHREAD_NP_H
+#define _BITS_PTHREAD_NP_H	1
+
+#endif /* bits/pthread-np.h */
diff --git a/htl/sysdeps/pthread/bits/pthread.h b/htl/sysdeps/pthread/bits/pthread.h
new file mode 100644
index 0000000..80e6b09
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/pthread.h
@@ -0,0 +1,38 @@
+/* Pthread data structures.  Generic version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_PTHREAD_H
+#define _BITS_PTHREAD_H	1
+
+typedef int __pthread_t;
+
+/* Return true if __T1 and __T2 both name the same thread.  Otherwise,
+   false.  */
+extern int
+__pthread_equal (__pthread_t __t1, __pthread_t __t2);
+
+#ifdef __USE_EXTERN_INLINES
+__extern_inline int
+__pthread_equal (__pthread_t __t1, __pthread_t __t2)
+{
+  return __t1 == __t2;
+}
+#endif
+
+#endif /* bits/pthread.h */
diff --git a/htl/sysdeps/pthread/bits/pthreadtypes.h b/htl/sysdeps/pthread/bits/pthreadtypes.h
new file mode 100644
index 0000000..bdbfc19
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/pthreadtypes.h
@@ -0,0 +1,30 @@
+/*
+   Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#if !defined _BITS_TYPES_H && !defined _PTHREAD_H
+# error "Never include <bits/pthreadtypes.h> directly; use <sys/types.h> instead."
+#endif
+
+#ifndef _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H    1
+
+#include <pthread/pthreadtypes.h>
+#include <bits/thread-shared-types.h>
+
+#endif /* bits/pthreadtypes.h */
diff --git a/htl/sysdeps/pthread/bits/rwlock-attr.h b/htl/sysdeps/pthread/bits/rwlock-attr.h
new file mode 100644
index 0000000..e78b91e
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/rwlock-attr.h
@@ -0,0 +1,32 @@
+/* Thread rwlock attribute type.  Generic version.
+   Copyright (C) 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_RWLOCK_ATTR_H
+#define _BITS_RWLOCK_ATTR_H	1
+
+enum __pthread_process_shared;
+
+/* This structure describes the attributes of a POSIX thread rwlock.
+   Note that not all of them are supported on all systems.  */
+struct __pthread_rwlockattr
+{
+  enum __pthread_process_shared __pshared;
+};
+
+#endif /* bits/rwlock-attr.h */
diff --git a/htl/sysdeps/pthread/bits/rwlock.h b/htl/sysdeps/pthread/bits/rwlock.h
new file mode 100644
index 0000000..bc27726
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/rwlock.h
@@ -0,0 +1,46 @@
+/* rwlock type.  Generic version.
+   Copyright (C) 2002, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_RWLOCK_H
+#define _BITS_RWLOCK_H
+
+#include <bits/spin-lock.h>
+
+/* User visible part of a rwlock.  If __held is not held and readers
+   is 0, then the lock is unlocked.  If __held is held and readers is
+   0, then the lock is held by a writer.  If __held is held and
+   readers is greater than 0, then the lock is held by READERS
+   readers.  */
+struct __pthread_rwlock
+  {
+    __pthread_spinlock_t __held;
+    __pthread_spinlock_t __lock;
+    int __readers;
+    struct __pthread *__readerqueue;
+    struct __pthread *__writerqueue;
+    struct __pthread_rwlockattr *__attr;
+    void *__data;
+  };
+
+/* Initializer for a rwlock.  */
+#define __PTHREAD_RWLOCK_INITIALIZER \
+    { __PTHREAD_SPIN_LOCK_INITIALIZER, __PTHREAD_SPIN_LOCK_INITIALIZER, 0, 0, 0, 0, 0 }
+
+
+#endif /* bits/rwlock.h */
diff --git a/htl/sysdeps/pthread/bits/semaphore.h b/htl/sysdeps/pthread/bits/semaphore.h
new file mode 100644
index 0000000..4c78409
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/semaphore.h
@@ -0,0 +1,44 @@
+/* Semaphore type.  Generic version.
+   Copyright (C) 2005, 2009 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_SEMAPHORE_H
+#define _BITS_SEMAPHORE_H	1
+
+#ifndef _SEMAPHORE_H
+#error Never include <bits/semaphore.h> directly.
+#endif
+
+#include <bits/spin-lock.h>
+#include <bits/pthread.h>
+
+/* User visible part of a semaphore.  */
+struct __semaphore
+  {
+    __pthread_spinlock_t __lock;
+    struct __pthread *__queue;
+    int __pshared;
+    int __value;
+    void *__data;
+  };
+
+/* Initializer for a semaphore.  */
+#define __SEMAPHORE_INITIALIZER(pshared, value) \
+  { __PTHREAD_SPIN_LOCK_INITIALIZER, NULL, (pshared), (value), NULL }
+
+#endif /* bits/mutex.h */
diff --git a/htl/sysdeps/pthread/bits/thread-attr.h b/htl/sysdeps/pthread/bits/thread-attr.h
new file mode 100644
index 0000000..d9456b0
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/thread-attr.h
@@ -0,0 +1,47 @@
+/* Thread attribute type.  Generic version.
+   Copyright (C) 2000, 2002, 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_THREAD_ATTR_H
+#define _BITS_THREAD_ATTR_H	1
+
+#define __need_schedparam
+#include <bits/sched.h>
+
+#define __need_size_t
+#include <stddef.h>
+
+enum __pthread_detachstate;
+enum __pthread_inheritsched;
+enum __pthread_contentionscope;
+
+/* This structure describes the attributes of a POSIX thread.  Note
+   that not all of them are supported on all systems.  */
+struct __pthread_attr
+{
+  struct __sched_param __schedparam;
+  void *__stackaddr;
+  size_t __stacksize;
+  size_t __guardsize;
+  enum __pthread_detachstate __detachstate;
+  enum __pthread_inheritsched __inheritsched;
+  enum __pthread_contentionscope __contentionscope;
+  int __schedpolicy;
+};
+
+#endif /* bits/thread-attr.h */
diff --git a/htl/sysdeps/pthread/bits/thread-shared-types.h b/htl/sysdeps/pthread/bits/thread-shared-types.h
new file mode 100644
index 0000000..369fead
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/thread-shared-types.h
@@ -0,0 +1,24 @@
+/* Common threading primitives definitions for both POSIX and C11.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _THREAD_SHARED_TYPES_H
+#define _THREAD_SHARED_TYPES_H 1
+
+#include <bits/pthreadtypes-arch.h>
+
+#endif /* _THREAD_SHARED_TYPES_H  */
diff --git a/htl/sysdeps/pthread/bits/thread-specific.h b/htl/sysdeps/pthread/bits/thread-specific.h
new file mode 100644
index 0000000..b42d99e
--- /dev/null
+++ b/htl/sysdeps/pthread/bits/thread-specific.h
@@ -0,0 +1,25 @@
+/* Thread specific data.  Generic version.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _BITS_THREAD_SPECIFIC_H
+#define _BITS_THREAD_SPECIFIC_H	1
+
+typedef int __pthread_key;
+
+#endif /* bits/thread-specific.h */
diff --git a/htl/sysdeps/pthread/flockfile.c b/htl/sysdeps/pthread/flockfile.c
new file mode 100644
index 0000000..695624f
--- /dev/null
+++ b/htl/sysdeps/pthread/flockfile.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <libc-lock.h>
+
+
+void
+__flockfile (FILE *stream)
+{
+#ifdef SHARED
+  __libc_ptf_call (_IO_flockfile, (stream), 0);
+#endif
+}
+weak_alias (__flockfile, _IO_flockfile)
+weak_alias (__flockfile, flockfile)
diff --git a/htl/sysdeps/pthread/ftrylockfile.c b/htl/sysdeps/pthread/ftrylockfile.c
new file mode 100644
index 0000000..48420de
--- /dev/null
+++ b/htl/sysdeps/pthread/ftrylockfile.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdio-lock.h>
+
+
+int
+__ftrylockfile (FILE *stream)
+{
+#ifdef SHARED
+  return __libc_ptf_call (_IO_ftrylockfile, (stream), 0);
+#else
+  return 0;
+#endif
+}
+weak_alias (__ftrylockfile, _IO_ftrylockfile)
+weak_alias (__ftrylockfile, ftrylockfile)
diff --git a/htl/sysdeps/pthread/funlockfile.c b/htl/sysdeps/pthread/funlockfile.c
new file mode 100644
index 0000000..d64690f
--- /dev/null
+++ b/htl/sysdeps/pthread/funlockfile.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdio-lock.h>
+
+
+void
+__funlockfile (FILE *stream)
+{
+#ifdef SHARED
+  __libc_ptf_call (_IO_funlockfile, (stream), 0);
+#endif
+}
+weak_alias (__funlockfile, _IO_funlockfile)
+weak_alias (__funlockfile, funlockfile)
diff --git a/htl/sysdeps/pthread/libc-lockP.h b/htl/sysdeps/pthread/libc-lockP.h
new file mode 100644
index 0000000..9e034ad
--- /dev/null
+++ b/htl/sysdeps/pthread/libc-lockP.h
@@ -0,0 +1,180 @@
+/* Private libc-internal interface for mutex locks.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_LIBC_LOCKP_H
+#define _BITS_LIBC_LOCKP_H 1
+
+#include <pthread.h>
+#include <pthread-functions.h>
+
+/* Type for key to thread-specific data.  */
+typedef pthread_key_t __libc_key_t;
+
+/* If we check for a weakly referenced symbol and then perform a
+   normal jump to it te code generated for some platforms in case of
+   PIC is unnecessarily slow.  What would happen is that the function
+   is first referenced as data and then it is called indirectly
+   through the PLT.  We can make this a direct jump.  */
+#ifdef __PIC__
+# define __libc_maybe_call(FUNC, ARGS, ELSE) \
+  (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \
+		    _fn != NULL ? (*_fn) ARGS : ELSE; }))
+#else
+# define __libc_maybe_call(FUNC, ARGS, ELSE) \
+  (FUNC != NULL ? FUNC ARGS : ELSE)
+#endif
+
+/* Call thread functions through the function pointer table.  */
+#if defined SHARED && IS_IN (libc)
+# define PTFAVAIL(NAME) __libc_pthread_functions_init
+# define __libc_ptf_call(FUNC, ARGS, ELSE) \
+  (__libc_pthread_functions_init ? PTHFCT_CALL (ptr_##FUNC, ARGS) : ELSE)
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  PTHFCT_CALL (ptr_##FUNC, ARGS)
+#elif IS_IN (libpthread)
+# define PTFAVAIL(NAME) 1
+# define __libc_ptf_call(FUNC, ARGS, ELSE) \
+  FUNC ARGS
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  FUNC ARGS
+#else
+# define PTFAVAIL(NAME) (NAME != NULL)
+# define __libc_ptf_call(FUNC, ARGS, ELSE) \
+  __libc_maybe_call (FUNC, ARGS, ELSE)
+# define __libc_ptf_call_always(FUNC, ARGS) \
+  FUNC ARGS
+#endif
+
+/* Create thread-specific key.  */
+#define __libc_key_create(KEY, DESTRUCTOR) \
+  __libc_ptf_call (__pthread_key_create, (KEY, DESTRUCTOR), 1)
+
+/* Get thread-specific data.  */
+#define __libc_getspecific(KEY) \
+  __libc_ptf_call (__pthread_getspecific, (KEY), NULL)
+
+/* Set thread-specific data.  */
+#define __libc_setspecific(KEY, VALUE) \
+  __libc_ptf_call (__pthread_setspecific, (KEY, VALUE), 0)
+
+
+/* Functions that are used by this file and are internal to the GNU C
+   library.  */
+
+extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
+				 const pthread_mutexattr_t *__mutex_attr);
+
+extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
+
+extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr);
+
+extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr);
+
+extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr,
+					int __kind);
+
+extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock,
+				  const pthread_rwlockattr_t *__attr);
+
+extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
+
+extern int __pthread_key_create (pthread_key_t *__key,
+				 void (*__destr_function) (void *));
+
+extern int __pthread_setspecific (pthread_key_t __key,
+				  const void *__pointer);
+
+extern void *__pthread_getspecific (pthread_key_t __key);
+
+extern int __pthread_once (pthread_once_t *__once_control,
+			   void (*__init_routine) (void));
+
+extern int __pthread_atfork (void (*__prepare) (void),
+			     void (*__parent) (void),
+			     void (*__child) (void));
+
+
+
+/* Make the pthread functions weak so that we can elide them from
+   single-threaded processes.  */
+#if !defined(__NO_WEAK_PTHREAD_ALIASES) && !IS_IN (libpthread)
+# ifdef weak_extern
+weak_extern (__pthread_mutex_init)
+weak_extern (__pthread_mutex_destroy)
+weak_extern (__pthread_mutex_lock)
+weak_extern (__pthread_mutex_trylock)
+weak_extern (__pthread_mutex_unlock)
+weak_extern (__pthread_mutexattr_init)
+weak_extern (__pthread_mutexattr_destroy)
+weak_extern (__pthread_mutexattr_settype)
+weak_extern (__pthread_rwlock_init)
+weak_extern (__pthread_rwlock_destroy)
+weak_extern (__pthread_rwlock_rdlock)
+weak_extern (__pthread_rwlock_tryrdlock)
+weak_extern (__pthread_rwlock_wrlock)
+weak_extern (__pthread_rwlock_trywrlock)
+weak_extern (__pthread_rwlock_unlock)
+weak_extern (__pthread_key_create)
+weak_extern (__pthread_setspecific)
+weak_extern (__pthread_getspecific)
+weak_extern (__pthread_once)
+weak_extern (__pthread_initialize)
+weak_extern (__pthread_atfork)
+weak_extern (__pthread_setcancelstate)
+# else
+#  pragma weak __pthread_mutex_init
+#  pragma weak __pthread_mutex_destroy
+#  pragma weak __pthread_mutex_lock
+#  pragma weak __pthread_mutex_trylock
+#  pragma weak __pthread_mutex_unlock
+#  pragma weak __pthread_mutexattr_init
+#  pragma weak __pthread_mutexattr_destroy
+#  pragma weak __pthread_mutexattr_settype
+#  pragma weak __pthread_rwlock_destroy
+#  pragma weak __pthread_rwlock_rdlock
+#  pragma weak __pthread_rwlock_tryrdlock
+#  pragma weak __pthread_rwlock_wrlock
+#  pragma weak __pthread_rwlock_trywrlock
+#  pragma weak __pthread_rwlock_unlock
+#  pragma weak __pthread_key_create
+#  pragma weak __pthread_setspecific
+#  pragma weak __pthread_getspecific
+#  pragma weak __pthread_once
+#  pragma weak __pthread_initialize
+#  pragma weak __pthread_atfork
+#  pragma weak __pthread_setcancelstate
+# endif
+#endif
+
+#endif	/* bits/libc-lockP.h */
diff --git a/htl/sysdeps/pthread/pthread-functions.h b/htl/sysdeps/pthread/pthread-functions.h
new file mode 100644
index 0000000..c121936
--- /dev/null
+++ b/htl/sysdeps/pthread/pthread-functions.h
@@ -0,0 +1,141 @@
+/* Copyright (C) 2003, 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _PTHREAD_FUNCTIONS_H
+#define _PTHREAD_FUNCTIONS_H	1
+
+#include <pthread.h>
+
+int __pthread_attr_destroy (pthread_attr_t *);
+int __pthread_attr_init (pthread_attr_t *);
+int __pthread_attr_getdetachstate (const pthread_attr_t *, int *);
+int __pthread_attr_setdetachstate (pthread_attr_t *, int);
+int __pthread_attr_getinheritsched (const pthread_attr_t *, int *);
+int __pthread_attr_setinheritsched (pthread_attr_t *, int);
+int __pthread_attr_getschedparam (const pthread_attr_t *,
+				 struct sched_param *);
+int __pthread_attr_setschedparam (pthread_attr_t *,
+				 const struct sched_param *);
+int __pthread_attr_getschedpolicy (const pthread_attr_t *, int *);
+int __pthread_attr_setschedpolicy (pthread_attr_t *, int);
+int __pthread_attr_getscope (const pthread_attr_t *, int *);
+int __pthread_attr_setscope (pthread_attr_t *, int);
+int __pthread_condattr_destroy (pthread_condattr_t *);
+int __pthread_condattr_init (pthread_condattr_t *);
+int __pthread_cond_broadcast (pthread_cond_t *);
+int __pthread_cond_destroy (pthread_cond_t *);
+int __pthread_cond_init (pthread_cond_t *,
+		       const pthread_condattr_t *);
+int __pthread_cond_signal (pthread_cond_t *);
+int __pthread_cond_wait (pthread_cond_t *, pthread_mutex_t *);
+int __pthread_cond_timedwait (pthread_cond_t *, pthread_mutex_t *,
+			     const struct timespec *);
+int __pthread_equal (pthread_t, pthread_t);
+void __pthread_exit (void *);
+int __pthread_getschedparam (pthread_t, int *, struct sched_param *);
+int __pthread_setschedparam (pthread_t, int,
+			    const struct sched_param *);
+int _pthread_mutex_destroy (pthread_mutex_t *);
+int _pthread_mutex_init (pthread_mutex_t *,
+			 const pthread_mutexattr_t *);
+int __pthread_mutex_lock (pthread_mutex_t *);
+int __pthread_mutex_trylock (pthread_mutex_t *);
+int __pthread_mutex_unlock (pthread_mutex_t *);
+pthread_t __pthread_self (void);
+int __pthread_setcancelstate (int, int *);
+int __pthread_setcanceltype (int, int *);
+struct __pthread_cancelation_handler **__pthread_get_cleanup_stack (void);
+int __pthread_once (pthread_once_t *, void (*) (void));
+int __pthread_rwlock_rdlock (pthread_rwlock_t *);
+int __pthread_rwlock_wrlock (pthread_rwlock_t *);
+int __pthread_rwlock_unlock (pthread_rwlock_t *);
+int __pthread_key_create (pthread_key_t *, void (*) (void *));
+void *__pthread_getspecific (pthread_key_t);
+int __pthread_setspecific (pthread_key_t, const void *);
+
+void _cthreads_flockfile (FILE *);
+void _cthreads_funlockfile (FILE *);
+int _cthreads_ftrylockfile (FILE *);
+
+/* Data type shared with libc.  The libc uses it to pass on calls to
+   the thread functions.  Wine pokes directly into this structure,
+   so if possible avoid breaking it and append new hooks to the end.  */
+struct pthread_functions
+{
+  int (*ptr_pthread_attr_destroy) (pthread_attr_t *);
+  int (*ptr_pthread_attr_init) (pthread_attr_t *);
+  int (*ptr_pthread_attr_getdetachstate) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setdetachstate) (pthread_attr_t *, int);
+  int (*ptr_pthread_attr_getinheritsched) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setinheritsched) (pthread_attr_t *, int);
+  int (*ptr_pthread_attr_getschedparam) (const pthread_attr_t *,
+					 struct sched_param *);
+  int (*ptr_pthread_attr_setschedparam) (pthread_attr_t *,
+					 const struct sched_param *);
+  int (*ptr_pthread_attr_getschedpolicy) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setschedpolicy) (pthread_attr_t *, int);
+  int (*ptr_pthread_attr_getscope) (const pthread_attr_t *, int *);
+  int (*ptr_pthread_attr_setscope) (pthread_attr_t *, int);
+  int (*ptr_pthread_condattr_destroy) (pthread_condattr_t *);
+  int (*ptr_pthread_condattr_init) (pthread_condattr_t *);
+  int (*ptr_pthread_cond_broadcast) (pthread_cond_t *);
+  int (*ptr_pthread_cond_destroy) (pthread_cond_t *);
+  int (*ptr_pthread_cond_init) (pthread_cond_t *,
+			       const pthread_condattr_t *);
+  int (*ptr_pthread_cond_signal) (pthread_cond_t *);
+  int (*ptr_pthread_cond_wait) (pthread_cond_t *, pthread_mutex_t *);
+  int (*ptr_pthread_cond_timedwait) (pthread_cond_t *, pthread_mutex_t *,
+				     const struct timespec *);
+  int (*ptr_pthread_equal) (pthread_t, pthread_t);
+  void (*ptr___pthread_exit) (void *);
+  int (*ptr_pthread_getschedparam) (pthread_t, int *, struct sched_param *);
+  int (*ptr_pthread_setschedparam) (pthread_t, int,
+				    const struct sched_param *);
+  int (*ptr_pthread_mutex_destroy) (pthread_mutex_t *);
+  int (*ptr_pthread_mutex_init) (pthread_mutex_t *,
+				 const pthread_mutexattr_t *);
+  int (*ptr_pthread_mutex_lock) (pthread_mutex_t *);
+  int (*ptr_pthread_mutex_trylock) (pthread_mutex_t *);
+  int (*ptr_pthread_mutex_unlock) (pthread_mutex_t *);
+  pthread_t (*ptr_pthread_self) (void);
+  int (*ptr___pthread_setcancelstate) (int, int *);
+  int (*ptr_pthread_setcanceltype) (int, int *);
+  struct __pthread_cancelation_handler **(*ptr___pthread_get_cleanup_stack) (void);
+  int (*ptr_pthread_once) (pthread_once_t *, void (*) (void));
+  int (*ptr_pthread_rwlock_rdlock) (pthread_rwlock_t *);
+  int (*ptr_pthread_rwlock_wrlock) (pthread_rwlock_t *);
+  int (*ptr_pthread_rwlock_unlock) (pthread_rwlock_t *);
+  int (*ptr___pthread_key_create) (pthread_key_t *, void (*) (void *));
+  void *(*ptr___pthread_getspecific) (pthread_key_t);
+  int (*ptr___pthread_setspecific) (pthread_key_t, const void *);
+  void (*ptr__IO_flockfile) (FILE *);
+  void (*ptr__IO_funlockfile) (FILE *);
+  int (*ptr__IO_ftrylockfile) (FILE *);
+};
+
+/* Variable in libc.so.  */
+extern struct pthread_functions __libc_pthread_functions attribute_hidden;
+extern int __libc_pthread_functions_init attribute_hidden;
+
+void __libc_pthread_init (const struct pthread_functions *functions);
+
+# define PTHFCT_CALL(fct, params) \
+    __libc_pthread_functions.fct params
+
+#endif	/* pthread-functions.h */
diff --git a/htl/sysdeps/pthread/pthread.h b/htl/sysdeps/pthread/pthread.h
new file mode 100644
index 0000000..8e65b05
--- /dev/null
+++ b/htl/sysdeps/pthread/pthread.h
@@ -0,0 +1,22 @@
+#ifndef _PTHREAD_H
+#include <pthread/pthread.h>
+
+/* These represent the interface used by glibc itself.  */
+
+extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
+extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
+
+typedef struct __cthread *__cthread_t;
+typedef int __cthread_key_t;
+typedef void *	(*__cthread_fn_t)(void *__arg);
+
+__cthread_t __cthread_fork (__cthread_fn_t, void *);
+void __cthread_detach (__cthread_t);
+int __cthread_keycreate (__cthread_key_t *);
+int __cthread_getspecific (__cthread_key_t, void **);
+int __cthread_setspecific (__cthread_key_t, void *);
+
+int __pthread_getattr_np (pthread_t, pthread_attr_t *);
+int __pthread_attr_getstack (const pthread_attr_t *, void **, size_t *);
+
+#endif
diff --git a/htl/sysdeps/pthread/pthreadP.h b/htl/sysdeps/pthread/pthreadP.h
new file mode 100644
index 0000000..97e3028
--- /dev/null
+++ b/htl/sysdeps/pthread/pthreadP.h
@@ -0,0 +1,27 @@
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _PTHREADP_H
+#define _PTHREADP_H	1
+
+#include <pthread.h>
+
+extern pthread_t __pthread_self (void);
+extern int __pthread_kill (pthread_t threadid, int signo);
+extern struct __pthread **__pthread_threads;
+
+#endif	/* pthreadP.h */
diff --git a/htl/sysdeps/pthread/semaphore.h b/htl/sysdeps/pthread/semaphore.h
new file mode 100644
index 0000000..64249f6
--- /dev/null
+++ b/htl/sysdeps/pthread/semaphore.h
@@ -0,0 +1,81 @@
+/* Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SEMAPHORE_H
+#define _SEMAPHORE_H	1
+
+#include <features.h>
+#include <sys/types.h>
+#ifdef __USE_XOPEN2K
+# define __need_timespec
+# include <time.h>
+#endif
+
+/* Get the definition for struct __semaphore.  */
+#include <bits/semaphore.h>
+
+
+__BEGIN_DECLS
+
+#define SEM_FAILED ((void *) 0)
+
+typedef struct __semaphore sem_t;
+
+/* Initialize semaphore *SEM with value VALUE.  */
+extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value)
+     __THROW;
+/* Destroy semaphore *SEM created with sem_init.  */
+extern int sem_destroy (sem_t *__sem) __THROW;
+
+/* Open a named semaphore.  */
+extern sem_t *sem_open (const char *__name, int __oflag, ...) __THROW;
+
+/* Close a semaphore returned by sem_open.  */
+extern int sem_close (sem_t *__sem) __THROW;
+
+/* Unlink a named semaphore.  */
+extern int sem_unlink (const char *__name) __THROW;
+
+/* Perform a down operation on semaphore *SEM.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int sem_wait (sem_t *__sem);
+
+#ifdef __USE_XOPEN2K
+/* Perform a down operation on semaphore *SEM but don't wait longer
+   than TIMEOUT.  */
+extern int sem_timedwait (sem_t *__restrict __sem,
+			  const struct timespec *__restrict __abstime);
+#endif
+
+/* Perform a down operation on semaphore *SEM if it can be done so
+   without blocking.  */
+extern int sem_trywait (sem_t *__sem) __THROWNL;
+
+/* Perform an up operation on semaphore *SEM.  */
+extern int sem_post (sem_t *__sem) __THROWNL;
+
+/* Store the value of semaphore *SEM in *VALUE.  */
+extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval)
+    __THROW;
+
+
+__END_DECLS
+
+#endif /* semaphore.h */
diff --git a/htl/tests/Makefile b/htl/tests/Makefile
new file mode 100644
index 0000000..7177ad1
--- /dev/null
+++ b/htl/tests/Makefile
@@ -0,0 +1,40 @@
+ifdef INSTALL_ROOT
+INSTALL_ROOT_CPPFLAGS = -isystem $(INSTALL_ROOT)/include
+INSTALL_ROOT_LDFLAGS = -L$(INSTALL_ROOT)/lib -Wl,-rpath,$(INSTALL_ROOT)/lib
+endif
+
+CFLAGS=-Wall -g
+
+LDLIBS = -lpthread
+
+CHECK_SRC := test-1.c test-2.c test-3.c test-6.c test-7.c test-8.c	\
+	test-9.c test-10.c test-11.c test-12.c test-13.c test-14.c	\
+	test-15.c test-16.c test-17.c test-__pthread_destroy_specific-skip.c
+
+CHECK_OBJS := $(addsuffix .o,$(basename $(notdir $(CHECK_SRC))))
+CHECK_PROGS := $(basename $(notdir $(CHECK_SRC))) \
+	$(addsuffix -static, $(basename $(CHECK_SRC)))
+
+%.o: %.c
+	$(CC) $(INSTALL_ROOT_CPPFLAGS) $(CPPFLAGS) $(CFLAGS) $< -c -o $@
+
+%: %.o
+	$(CC) $(INSTALL_ROOT_LDFLAGS) $(LDFLAGS) $< -o $@ $(LDLIBS)
+
+%-static: %.o
+	$(CC) -static $(INSTALL_ROOT_LDFLAGS) $(LDFLAGS) $< -o $@ $(LDLIBS)
+
+check: $(CHECK_OBJS) $(CHECK_PROGS)
+	for i in $(CHECK_PROGS); do		\
+	  echo -n Running $$i...\ ;		\
+	  if ./$$i 2>&1 > $$i.out;		\
+	  then					\
+	    echo Success.;			\
+	  else					\
+	    echo Failure.;			\
+	  fi					\
+	done
+
+clean:
+	rm -f $(CHECK_OBJS) $(CHECK_PROGS) \
+	  $(addsuffix .out,$(basename $(notdir $(CHECK_PROGS))))
\ No newline at end of file
diff --git a/htl/tests/README b/htl/tests/README
new file mode 100644
index 0000000..230f1b2
--- /dev/null
+++ b/htl/tests/README
@@ -0,0 +1,6 @@
+Testing of installed package:
+
+    $ [libpthread]/configure --prefix=[install_root]
+    $ make
+    $ make install
+    $ make -C [libpthread]/tests/ INSTALL_ROOT=[install_root] clean check
diff --git a/htl/tests/test-1.c b/htl/tests/test-1.c
new file mode 100644
index 0000000..6ec1afb
--- /dev/null
+++ b/htl/tests/test-1.c
@@ -0,0 +1,50 @@
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <unistd.h>
+#include <error.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define THREADS 500
+
+void *
+foo (void *arg)
+{
+  pthread_mutex_t *mutex = arg;
+  pthread_mutex_lock (mutex);
+  pthread_mutex_unlock (mutex);
+  return mutex;
+}
+
+int
+main (int argc, char **argv)
+{
+  int i;
+  error_t err;
+  pthread_t tid[THREADS];
+  pthread_mutex_t mutex[THREADS];
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      pthread_mutex_init (&mutex[i], 0);
+      pthread_mutex_lock (&mutex[i]);
+      err = pthread_create (&tid[i], 0, foo, &mutex[i]);
+      if (err)
+	error (1, err, "pthread_create");
+      sched_yield ();
+    }
+
+  for (i = THREADS - 1; i >= 0; i --)
+    {
+      void *ret;
+      pthread_mutex_unlock (&mutex[i]);
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+      assert (ret == &mutex[i]);
+    }
+
+  return 0;
+}
diff --git a/htl/tests/test-10.c b/htl/tests/test-10.c
new file mode 100644
index 0000000..bec05c1
--- /dev/null
+++ b/htl/tests/test-10.c
@@ -0,0 +1,46 @@
+/* Test error checking mutexes.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  pthread_mutexattr_t mattr;
+  pthread_mutex_t mutex;
+
+  err = pthread_mutexattr_init (&mattr);
+  if (err)
+    error (1, err, "pthread_mutexattr_init");
+
+  err = pthread_mutexattr_settype (&mattr, PTHREAD_MUTEX_ERRORCHECK);
+  if (err)
+    error (1, err, "pthread_mutexattr_settype");
+
+  err = pthread_mutex_init (&mutex, &mattr);
+  if (err)
+    error (1, err, "pthread_mutex_init");
+
+  err = pthread_mutexattr_destroy (&mattr);
+  if (err)
+    error (1, err, "pthread_mutexattr_destroy");
+
+  err = pthread_mutex_lock (&mutex);
+  assert (err == 0);
+
+  err = pthread_mutex_lock (&mutex);
+  assert (err == EDEADLK);
+
+  err = pthread_mutex_unlock (&mutex);
+  assert (err == 0);
+
+  err = pthread_mutex_unlock (&mutex);
+  assert (err == EPERM);
+
+  return 0;
+}
diff --git a/htl/tests/test-11.c b/htl/tests/test-11.c
new file mode 100644
index 0000000..f5a5aa0
--- /dev/null
+++ b/htl/tests/test-11.c
@@ -0,0 +1,143 @@
+/* Test rwlocks.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+
+#define THREADS 1
+
+int a;
+int b;
+
+/* Get a read lock and assert that a == b.  */
+void *
+test1 (void *arg)
+{
+  error_t err;
+  pthread_rwlock_t *lock = arg;
+  int i;
+
+  for (i = 0; i < 200; i ++)
+    {
+      err = pthread_rwlock_rdlock (lock);
+      assert (err == 0);
+
+      assert (a == b);
+
+      sched_yield ();
+
+      assert (a == b);
+
+      err = pthread_rwlock_unlock (lock);
+      assert (err == 0);
+    }
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  pthread_rwlockattr_t attr;
+  pthread_rwlock_t lock;
+  int pshared;
+
+  int i;
+  pthread_t tid[THREADS];
+  void *ret;
+
+  err = pthread_rwlockattr_init (&attr);
+  if (err)
+    error (1, err, "pthread_rwlockattr_init");
+
+  err = pthread_rwlockattr_getpshared (&attr, &pshared);
+  if (err)
+    error (1, err, "pthread_rwlockattr_getpshared");
+
+  /* Assert the default state as mandated by POSIX.  */
+  assert (pshared == PTHREAD_PROCESS_PRIVATE);
+
+  err = pthread_rwlockattr_setpshared (&attr, pshared);
+  if (err)
+    error (1, err, "pthread_rwlockattr_setpshared");
+
+  err = pthread_rwlock_init (&lock, &attr);
+  if (err)
+    error (1, err, "pthread_rwlock_init");
+
+  err = pthread_rwlockattr_destroy (&attr);
+  if (err)
+    error (1, err, "pthread_rwlockattr_destroy");
+
+  /* Now test the lock.  */
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      err = pthread_create (&tid[i], 0, test1, &lock);
+      if (err)
+	error (1, err, "pthread_create");
+    }
+
+  for (i = 0; i < 10; i ++)
+    {
+      sched_yield ();
+
+      /* Get a write lock.  */
+      pthread_rwlock_wrlock (&lock);
+      /* Increment a and b giving other threads a chance to run in
+	 between.  */
+      sched_yield ();
+      a ++;
+      sched_yield ();
+      b ++;
+      sched_yield ();
+      /* Unlock.  */
+      pthread_rwlock_unlock (&lock);
+    }
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+    }
+
+  /* Read lock it.  */
+  err = pthread_rwlock_tryrdlock (&lock);
+  assert (err == 0);
+
+  /* Try to write lock it.  It should fail with EBUSY.  */
+  err = pthread_rwlock_trywrlock (&lock);
+  assert (err == EBUSY);
+
+  /* Drop the read lock.  */
+  err = pthread_rwlock_unlock (&lock);
+  assert (err == 0);
+
+  /* Get a write lock.  */
+  err = pthread_rwlock_trywrlock (&lock);
+  assert (err == 0);
+
+  /* Fail trying to acquire another write lock.  */
+  err = pthread_rwlock_trywrlock (&lock);
+  assert (err == EBUSY);
+
+  /* Try to get a read lock which should also fail.  */
+  err = pthread_rwlock_tryrdlock (&lock);
+  assert (err == EBUSY);
+
+  /* Unlock it.  */
+  err = pthread_rwlock_unlock (&lock);
+  assert (err == 0);
+
+
+  err = pthread_rwlock_destroy (&lock);
+  if (err)
+    error (1, err, "pthread_rwlock_destroy");
+
+  return 0;
+}
diff --git a/htl/tests/test-12.c b/htl/tests/test-12.c
new file mode 100644
index 0000000..2b78490
--- /dev/null
+++ b/htl/tests/test-12.c
@@ -0,0 +1,29 @@
+/* Test concurrency level.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+
+int
+main (int argc, char **argv)
+{
+  int i;
+  int err;
+
+  i = pthread_getconcurrency ();
+  assert (i == 0);
+
+  err = pthread_setconcurrency (-1);
+  assert (err == EINVAL);
+
+  err = pthread_setconcurrency (4);
+  assert (err == 0);
+
+  i = pthread_getconcurrency ();
+  assert (i == 4);
+
+  return 0;
+}
diff --git a/htl/tests/test-13.c b/htl/tests/test-13.c
new file mode 100644
index 0000000..13b0905
--- /dev/null
+++ b/htl/tests/test-13.c
@@ -0,0 +1,66 @@
+/* Test condition attributes and pthread_cond_timedwait.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <stdio.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+#include <sys/time.h>
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  int i;
+  pthread_condattr_t attr;
+  pthread_cond_t cond;
+  struct timespec ts;
+  pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
+  struct timeval before, after;
+  int diff;
+
+  err = pthread_condattr_init (&attr);
+  if (err)
+    error (1, err, "pthread_condattr_init");
+
+  err = pthread_condattr_getpshared (&attr, &i);
+  if (err)
+    error (1, err, "pthread_condattr_getpshared");
+  assert (i == PTHREAD_PROCESS_PRIVATE);
+
+  err = pthread_condattr_setpshared (&attr, PTHREAD_PROCESS_PRIVATE);
+  assert (err == 0);
+
+  err = pthread_cond_init (&cond, &attr);
+  if (err)
+    error (1, err, "pthread_cond_init");
+
+  err = pthread_condattr_destroy (&attr);
+  if (err)
+    error (1, err, "pthread_condattr_destroy");
+
+  gettimeofday (&before, 0);
+  ts.tv_sec = before.tv_sec + 1;
+  ts.tv_nsec = before.tv_usec * 1000;
+
+  printf ("Starting wait @ %d\n", (int) before.tv_sec);
+
+  pthread_mutex_lock (&m);
+  err = pthread_cond_timedwait (&cond, &m, &ts);
+
+  gettimeofday (&after, 0);
+
+  printf ("End wait @ %d (err = %d)\n", (int) after.tv_sec, err);
+
+  assert (err == ETIMEDOUT);
+
+  diff = after.tv_sec * 1000000 + after.tv_usec
+    - before.tv_sec * 1000000 - before.tv_usec;
+
+  if (diff < 900000 || diff > 1100000)
+    error (1, EGRATUITOUS, "pthread_cond_timedwait waited %d us", diff);
+
+  return 0;
+}
diff --git a/htl/tests/test-14.c b/htl/tests/test-14.c
new file mode 100644
index 0000000..b1dbfa6
--- /dev/null
+++ b/htl/tests/test-14.c
@@ -0,0 +1,44 @@
+/* Test pthread_mutex_timedlock.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <stdio.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+#include <sys/time.h>
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  struct timespec ts;
+  pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
+  struct timeval before, after;
+  int diff;
+
+  gettimeofday (&before, 0);
+  ts.tv_sec = before.tv_sec + 1;
+  ts.tv_nsec = before.tv_usec * 1000;
+
+  printf ("Starting wait @ %d\n", (int) before.tv_sec);
+
+  pthread_mutex_lock (&m);
+  /* A default mutex shall dead lock if locked twice.  As such we do
+     not need spawn a second thread.  */
+  err = pthread_mutex_timedlock (&m, &ts);
+  assert (err == ETIMEDOUT);
+
+  gettimeofday (&after, 0);
+
+  printf ("End wait @ %d\n", (int) after.tv_sec);
+
+  diff = after.tv_sec * 1000000 + after.tv_usec
+    - before.tv_sec * 1000000 - before.tv_usec;
+
+  if (diff < 900000 || diff > 1100000)
+    error (1, EGRATUITOUS, "pthread_mutex_timedlock waited %d us", diff);
+
+  return 0;
+}
diff --git a/htl/tests/test-15.c b/htl/tests/test-15.c
new file mode 100644
index 0000000..173f8b6
--- /dev/null
+++ b/htl/tests/test-15.c
@@ -0,0 +1,87 @@
+/* Test pthread_rwlock_timedrdlock and pthread_rwlock_timedwrlock.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <stdio.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+#include <sys/time.h>
+
+#define THREADS 10
+
+pthread_rwlock_t rwlock;
+
+void *
+test (void *arg)
+{
+  error_t err;
+  int foo = (int) arg;
+  struct timespec ts;
+  struct timeval before, after;
+  int diff;
+
+  gettimeofday (&before, 0);
+  ts.tv_sec = before.tv_sec + 1;
+  ts.tv_nsec = before.tv_usec * 1000;
+
+  printf ("Thread %d starting wait @ %d\n", pthread_self (),
+	  (int) before.tv_sec);
+
+  if (foo % 2 == 0)
+    err = pthread_rwlock_timedrdlock (&rwlock, &ts);
+  else
+    err = pthread_rwlock_timedwrlock (&rwlock, &ts);
+
+  assert (err == ETIMEDOUT);
+
+  gettimeofday (&after, 0);
+
+  printf ("Thread %d ending wait @ %d\n", pthread_self (),
+	  (int) after.tv_sec);
+
+  diff = after.tv_sec * 1000000 + after.tv_usec
+    - before.tv_sec * 1000000 - before.tv_usec;
+
+  if (diff < 900000 || diff > 1100000)
+    error (1, EGRATUITOUS, "pthread_mutex_timedlock waited %d us", diff);
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  int i;
+  pthread_t tid[THREADS];
+
+  err = pthread_rwlock_init (&rwlock, 0);
+  if (err)
+    error (1, err, "pthread_rwlock_init");
+
+  /* Lock it so all the threads will block.  */
+  err = pthread_rwlock_wrlock (&rwlock);
+  assert (err == 0);
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      err = pthread_create (&tid[i], 0, test, (void *) i);
+      if (err)
+	error (1, err, "pthread_create");
+    }
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      void *ret;
+
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+
+      assert (ret == 0);
+    }
+
+  return 0;
+}
diff --git a/htl/tests/test-16.c b/htl/tests/test-16.c
new file mode 100644
index 0000000..3660f5f
--- /dev/null
+++ b/htl/tests/test-16.c
@@ -0,0 +1,71 @@
+/* Test pthread_kill.c.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+#include <hurd/signal.h>
+
+pthread_t testthread;
+
+int i;
+
+void *
+test (void *arg)
+{
+  error_t err;
+
+  printf ("test: %d\n", pthread_self ());
+
+  err = pthread_kill (pthread_self (), SIGINFO);
+  if (err)
+    error (1, err, "pthread_kill");
+
+  /* To avoid using condition variables in a signal handler.  */
+  while (i == 0)
+    sched_yield ();
+
+  return 0;
+}
+
+static void
+handler (int sig)
+{
+  assert (pthread_equal (pthread_self (), testthread));
+  printf ("handler: %d\n", pthread_self ());
+  i = 1;
+}
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  struct sigaction sa;
+  void *ret;
+
+  printf ("main: %d\n", pthread_self ());
+
+  sa.sa_handler = handler;
+  sa.sa_mask = 0;
+  sa.sa_flags = 0;
+
+  err = sigaction (SIGINFO, &sa, 0);
+  if (err)
+    error (1, err, "sigaction");
+
+  err = pthread_create (&testthread, 0, test, 0);
+  if (err)
+    error (1, err, "pthread_create");
+
+  err = pthread_join (testthread, &ret);
+  if (err)
+    error (1, err, "pthread_join");
+
+  assert (ret == 0);
+
+  return 0;
+}
diff --git a/htl/tests/test-17.c b/htl/tests/test-17.c
new file mode 100644
index 0000000..a8bd150
--- /dev/null
+++ b/htl/tests/test-17.c
@@ -0,0 +1,57 @@
+/* Test that the key reuse inside libpthread does not cause thread
+   specific values to persist. */
+
+#define _GNU_SOURCE 1
+
+#include <pthread.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+
+void
+work (int iter)
+{
+  error_t err;
+  pthread_key_t key1;
+  pthread_key_t key2;
+  void *value1;
+  void *value2;
+
+  printf ("work/%d: start\n", iter);
+  err = pthread_key_create (&key1, NULL);
+  assert (err == 0);
+  err = pthread_key_create (&key2, NULL);
+  assert (err == 0);
+
+  value1 = pthread_getspecific (key1);
+  value2 = pthread_getspecific (key2);
+  printf ("work/%d: pre-setspecific: %p,%p\n", iter, value1, value2);
+  assert (value1 == NULL);
+  assert (value2 == NULL);
+  err = pthread_setspecific (key1, (void *)(0x100 + iter));
+  assert (err == 0);
+  err = pthread_setspecific (key2, (void *)(0x200 + iter));
+  assert (err == 0);
+
+  value1 = pthread_getspecific (key1);
+  value2 = pthread_getspecific (key2);
+  printf ("work/%d: post-setspecific: %p,%p\n", iter, value1, value2);
+  assert (value1 == (void *)(0x100 + iter));
+  assert (value2 == (void *)(0x200 + iter));
+
+  err = pthread_key_delete (key1);
+  assert (err == 0);
+  err = pthread_key_delete (key2);
+  assert (err == 0);
+}
+
+int
+main (int argc, char *argv[])
+{
+  int i;
+
+  for (i = 0; i < 8; ++i)
+    work (i + 1);
+
+  return 0;
+}
diff --git a/htl/tests/test-2.c b/htl/tests/test-2.c
new file mode 100644
index 0000000..701462e
--- /dev/null
+++ b/htl/tests/test-2.c
@@ -0,0 +1,39 @@
+/* Test detachability.  */
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+#include <unistd.h>
+
+void *
+thread (void *arg)
+{
+  while (1)
+    sched_yield ();
+}
+
+int
+main (int argc, char **argv)
+{
+  int err;
+  pthread_t tid;
+  void *ret;
+
+  err = pthread_create (&tid, 0, thread, 0);
+  if (err)
+    error (1, err, "pthread_create");
+
+  err = pthread_detach (tid);
+  if (err)
+    error (1, err, "pthread_detach");
+
+  err = pthread_detach (tid);
+  assert (err == EINVAL);
+
+  err = pthread_join (tid, &ret);
+  assert (err == EINVAL);
+
+  return 0;
+}
diff --git a/htl/tests/test-3.c b/htl/tests/test-3.c
new file mode 100644
index 0000000..7db2e43
--- /dev/null
+++ b/htl/tests/test-3.c
@@ -0,0 +1,55 @@
+/* Test the thread attribute get and set methods.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <sched.h>
+#include <assert.h>
+#include <errno.h>
+
+int
+main (int argc, char *argv[])
+{
+  error_t err;
+  pthread_attr_t attr;
+
+  int i;
+  struct sched_param sp;
+  void *p;
+  size_t sz;
+
+  err = pthread_attr_init (&attr);
+  assert_perror (err);
+
+  err = pthread_attr_destroy (&attr);
+  assert_perror (err);
+
+  err = pthread_attr_init (&attr);
+  assert_perror (err);
+
+#define TEST1(foo, rv, v) \
+	err = pthread_attr_get##foo (&attr, rv); \
+	assert_perror (err); \
+	\
+	err = pthread_attr_set##foo (&attr, v); \
+	assert_perror (err);
+
+#define TEST(foo, rv, v) TEST1(foo, rv, v)
+
+  TEST(inheritsched, &i, i);
+  TEST(schedparam, &sp, &sp);
+  TEST(schedpolicy, &i, i);
+  TEST(scope, &i, i);
+  TEST(stackaddr, &p, p);
+  TEST(detachstate, &i, i);
+  TEST(guardsize, &sz, sz);
+  TEST(stacksize, &sz, sz);
+
+  err = pthread_attr_getstack (&attr, &p, &sz);
+  assert_perror (err);
+
+  err = pthread_attr_setstack (&attr, p, sz);
+  assert_perror (err);
+
+  return 0;
+}
diff --git a/htl/tests/test-4.c b/htl/tests/test-4.c
new file mode 100644
index 0000000..de9c8fe
--- /dev/null
+++ b/htl/tests/test-4.c
@@ -0,0 +1,86 @@
+/* Test the stack guard.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+size_t stacksize;
+
+void *
+thr (void *arg)
+{
+  int i;
+  char *foo;
+
+  foo = alloca (3 * stacksize / 4);
+  for (i = 0; i < sizeof foo; i ++)
+    foo[i] = -1;
+
+  return (void *) 1;
+}
+
+int
+main (int argc, char *argv[])
+{
+  error_t err;
+  pid_t child;
+
+  child = fork ();
+  switch (child)
+    {
+    case -1:
+      error (1, errno, "fork");
+      break;
+
+    case 0:
+      {
+	pthread_attr_t attr;
+	pthread_t tid;
+	void *ret;
+
+	err = pthread_attr_init (&attr);
+	assert_perror (err);
+
+	err = pthread_attr_getstacksize (&attr, &stacksize);
+	assert_perror (err);
+
+	err = pthread_attr_setguardsize (&attr, stacksize / 2);
+	if (err == ENOTSUP)
+	  {
+	    printf ("Stack guard attribute not supported.\n");
+	    return 1;
+	  }
+	assert_perror (err);
+
+	err = pthread_create (&tid, &attr, thr, 0);
+	assert_perror (err);
+
+	err = pthread_attr_destroy (&attr);
+	assert_perror (err);
+
+	err = pthread_join (tid, &ret);
+	/* Should never be successful.  */
+	printf ("Thread did not segfault!?!\n");
+	assert_perror (err);
+	return 0;
+      }
+
+    default:
+      {
+	pid_t pid;
+	int status;
+
+	pid = waitpid (child, &status, 0);
+	printf ("pid = %d; child = %d; status = %d\n", pid, child, status);
+	assert (pid == child);
+	assert (status != 0);
+      }
+    }
+
+  return 0;
+}
diff --git a/htl/tests/test-5.c b/htl/tests/test-5.c
new file mode 100644
index 0000000..0f5000b
--- /dev/null
+++ b/htl/tests/test-5.c
@@ -0,0 +1,75 @@
+/* Test signals.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+#include <error.h>
+#include <assert.h>
+#include <sys/resource.h>
+#include <sys/wait.h>
+
+void *
+thr (void *arg)
+{
+  * (int *)0 = 0;
+  return 0;
+}
+
+int foobar;
+
+int
+main (int argc, char *argv[])
+{
+  error_t err;
+  pid_t child;
+
+  struct rlimit limit;
+
+  limit.rlim_cur = 0;
+  limit.rlim_max = 0;
+
+  err = setrlimit (RLIMIT_CORE, &limit);
+  if (err)
+    error (1, err, "setrlimit");
+
+  child = fork ();
+  switch (child)
+    {
+    case -1:
+      error (1, errno, "fork");
+      break;
+
+    case 0:
+      {
+	pthread_t tid;
+	void *ret;
+
+	err = pthread_create (&tid, 0, thr, 0);
+	if (err)
+	  error (1, err, "pthread_create");
+
+	err = pthread_join (tid, &ret);
+	assert_perror (err);
+
+	/* Should have never returned.  Our parent expects us to fail
+	   thus we succeed and indicate the error.  */
+	return 0;
+      }
+
+    default:
+      {
+	pid_t pid;
+	int status;
+
+	pid = waitpid (child, &status, 0);
+	printf ("pid = %d; child = %d; status = %d\n", pid, child, status);
+	assert (pid == child);
+	assert (status != 0);
+      }
+    }
+
+  return 0;
+}
diff --git a/htl/tests/test-6.c b/htl/tests/test-6.c
new file mode 100644
index 0000000..205c7a4
--- /dev/null
+++ b/htl/tests/test-6.c
@@ -0,0 +1,96 @@
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <stdio.h>
+#include <error.h>
+#include <assert.h>
+#include <errno.h>
+
+#define THREADS 500
+#define WAITS 3
+
+void *
+dowait (void *arg)
+{
+  pthread_barrier_t *barrier = arg;
+  int ret;
+
+  ret = pthread_barrier_wait (barrier);
+  printf ("%d ", pthread_self ());
+  return (void *) ret;
+}
+
+int
+main (int argc, char **argv)
+{
+  pthread_barrierattr_t attr;
+  pthread_barrier_t barrier;
+
+  int i, j;
+  error_t err;
+  pthread_t tid[THREADS];
+
+  int havesyncs;
+
+  err = pthread_barrierattr_init (&attr);
+  if (err)
+    error (1, err, "pthread_barrierattr_init");
+
+  err = pthread_barrierattr_getpshared (&attr, &i);
+  if (err)
+    error (1, err, "pthread_barrierattr_getpshared");
+  assert (i == PTHREAD_PROCESS_PRIVATE || i == PTHREAD_PROCESS_SHARED);
+
+  err = pthread_barrierattr_setpshared (&attr, PTHREAD_PROCESS_PRIVATE);
+  if (err)
+    error (1, err, "pthread_barrierattr_setpshared");
+
+  err = pthread_barrier_init (&barrier, &attr, THREADS + 1);
+  if (err)
+    error (1, err, "pthread_barrier_init");
+
+  for (j = 0; j < WAITS; j ++)
+    {
+
+      for (i = 0; i < THREADS; i ++)
+	{
+	  err = pthread_create (&tid[i], 0, dowait, &barrier);
+	  if (err)
+	    error (1, err, "pthread_create (%d)", i);
+	}
+
+      printf ("Manager will now call pthread_barrier_wait.\n");
+
+      havesyncs
+	= pthread_barrier_wait (&barrier) == PTHREAD_BARRIER_SERIAL_THREAD
+	? 1 : 0;
+
+      for (i = THREADS - 1; i >= 0; i --)
+	{
+	  void *ret;
+	  err = pthread_join (tid[i], &ret);
+	  if (err)
+	    error (1, err, "pthread_join");
+
+	  switch ((int) ret)
+	    {
+	    case 0:
+	      break;
+
+	    case PTHREAD_BARRIER_SERIAL_THREAD:
+	      havesyncs ++;
+	      break;
+
+	    default:
+	      assert (! "Unknown value returned from pthread_barrier_wait.");
+	      break;
+	    }
+	}
+
+      printf ("\n");
+
+      assert (havesyncs == 1);
+    }
+
+  return 0;
+}
diff --git a/htl/tests/test-7.c b/htl/tests/test-7.c
new file mode 100644
index 0000000..be724ce
--- /dev/null
+++ b/htl/tests/test-7.c
@@ -0,0 +1,70 @@
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <stdio.h>
+#include <error.h>
+#include <errno.h>
+
+#define THREADS 10
+#define KEYS 400
+
+pthread_key_t key[KEYS];
+
+void *
+thr (void *arg)
+{
+  error_t err;
+  int i;
+
+  for (i = 0; i < KEYS; i ++)
+    {
+      printf ("pthread_getspecific(%d).\n", key[i]);
+      assert (pthread_getspecific (key[i]) == NULL);
+      printf ("pthread_setspecific(%d, %d).\n", key[i], pthread_self ());
+      err = pthread_setspecific (key[i], (void *) pthread_self ());
+      printf ("pthread_setspecific(%d, %d) => %d.\n", key[i], pthread_self (), err);
+      assert_perror (err);
+    }
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  int i;
+  pthread_t tid[THREADS];
+
+  void des (void *val)
+    {
+      assert ((pthread_t) val == pthread_self ());
+    }
+
+  assert (pthread_getspecific ((pthread_key_t) 0) == NULL);
+  assert (pthread_setspecific ((pthread_key_t) 0, (void *) 0x1) == EINVAL);
+
+  for (i = 0; i < KEYS; i ++)
+    err = pthread_key_create (&key[i], des);
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      err = pthread_create (&tid[i], 0, thr, 0);
+      if (err)
+	error (1, err, "pthread_create (%d)", i);
+    }
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      void *ret;
+
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+
+      assert (ret == 0);
+    }
+
+  return 0;
+}
diff --git a/htl/tests/test-8.c b/htl/tests/test-8.c
new file mode 100644
index 0000000..85a7f8f
--- /dev/null
+++ b/htl/tests/test-8.c
@@ -0,0 +1,60 @@
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+
+#define THREADS 10
+
+pthread_once_t inc_var_once = PTHREAD_ONCE_INIT;
+int var;
+
+void
+inc_var (void)
+{
+  var ++;
+}
+
+void *
+thr (void *arg)
+{
+  int i;
+
+  for (i = 0; i < 500; i ++)
+    pthread_once (&inc_var_once, inc_var);
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  int i;
+  pthread_t tid[THREADS];
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      err = pthread_create (&tid[i], 0, thr, 0);
+      if (err)
+	error (1, err, "pthread_create (%d)", i);
+    }
+
+  assert (thr (0) == 0);
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      void *ret;
+
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+
+      assert (ret == 0);
+    }
+
+  assert (var == 1);
+
+  return 0;
+}
diff --git a/htl/tests/test-9.c b/htl/tests/test-9.c
new file mode 100644
index 0000000..8205157
--- /dev/null
+++ b/htl/tests/test-9.c
@@ -0,0 +1,88 @@
+/* Test recursive mutexes.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+
+#define THREADS 10
+
+int foo;
+
+void *
+thr (void *arg)
+{
+  int i;
+
+  pthread_mutex_lock (arg);
+
+  foo = pthread_self ();
+
+  for (i = 0; i < 500; i ++)
+    pthread_mutex_lock (arg);
+  for (i = 0; i < 500; i ++)
+    pthread_mutex_unlock (arg);
+
+  assert (foo == pthread_self ());
+
+  pthread_mutex_unlock (arg);
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  error_t err;
+  int i;
+  pthread_t tid[THREADS];
+  pthread_mutexattr_t mattr;
+  pthread_mutex_t mutex;
+
+  err = pthread_mutexattr_init (&mattr);
+  if (err)
+    error (1, err, "pthread_mutexattr_init");
+
+  err = pthread_mutexattr_settype (&mattr, PTHREAD_MUTEX_RECURSIVE);
+  if (err)
+    error (1, err, "pthread_mutexattr_settype");
+
+  err = pthread_mutex_init (&mutex, &mattr);
+  if (err)
+    error (1, err, "pthread_mutex_init");
+
+  err = pthread_mutexattr_destroy (&mattr);
+  if (err)
+    error (1, err, "pthread_mutexattr_destroy");
+
+  pthread_mutex_lock (&mutex);
+  pthread_mutex_lock (&mutex);
+  pthread_mutex_unlock (&mutex);
+  pthread_mutex_unlock (&mutex);
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      err = pthread_create (&tid[i], 0, thr, &mutex);
+      if (err)
+	error (1, err, "pthread_create (%d)", i);
+    }
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      void *ret;
+
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+
+      assert (ret == 0);
+    }
+
+  err = pthread_mutex_destroy (&mutex);
+  if (err)
+    error (1, err, "pthread_mutex_destroy");
+
+  return 0;
+}
diff --git a/htl/tests/test-__pthread_destroy_specific-skip.c b/htl/tests/test-__pthread_destroy_specific-skip.c
new file mode 100644
index 0000000..b2c4c0b
--- /dev/null
+++ b/htl/tests/test-__pthread_destroy_specific-skip.c
@@ -0,0 +1,83 @@
+/* Check that __pthread_destroy_specific works correctly if it has to skip
+   unused slots.  */
+
+#define _GNU_SOURCE
+
+#include <error.h>
+#include <pthread.h>
+#include <stdio.h>
+
+
+#define N_k 42
+
+static volatile int v;
+
+static void
+d (void *x)
+{
+  int *i = (int *) x;
+
+  if (v != *i)
+    error (1, 0, "FAILED %d %d", v, *i);
+  v += 2;
+
+  printf ("%s %d\n", __FUNCTION__, *i);
+  fflush (stdout);
+}
+
+static void *
+test (void *x)
+{
+  pthread_key_t k[N_k];
+  static int k_v[N_k];
+
+  int err, i;
+
+  for (i = 0; i < N_k; i += 1)
+    {
+      err = pthread_key_create (&k[i], &d);
+      if (err != 0)
+        error (1, err, "pthread_key_create %d", i);
+    }
+
+  for (i = 0; i < N_k; i += 1)
+    {
+      k_v[i] = i;
+      err = pthread_setspecific (k[i], &k_v[i]);
+      if (err != 0)
+        error (1, err, "pthread_setspecific %d", i);
+    }
+
+  /* Delete every even key.  */
+  for (i = 0; i < N_k; i += 2)
+    {
+      err = pthread_key_delete (k[i]);
+      if (err != 0)
+        error (1, err, "pthread_key_delete %d", i);
+    }
+
+  v = 1;
+  pthread_exit (NULL);
+
+  return NULL;
+}
+
+
+int main(void)
+{
+  pthread_t tid;
+  int err;
+
+  err = pthread_create (&tid, 0, test, NULL);
+  if (err != 0)
+    error (1, err, "pthread_create");
+
+  err = pthread_join(tid, NULL);
+  if (err)
+    error (1, err, "pthread_join");
+
+  if (v != N_k + 1)
+    error (1, 0, "FAILED END %d %d", v, N_k + 1);
+
+  return 0;
+}

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=c628ededbd8614b5eb804c42afb70265dbf6c289

commit c628ededbd8614b5eb804c42afb70265dbf6c289
Author: Thomas Schwinge <thomas@schwinge.name>
Date:   Fri Jan 19 02:18:09 2018 +0100

    t/tls-threadvar
    
    replace the custom threadvar mechanism with generic TLS.
    That will fix sigaltstack.
    
    Note: the added reply_port and _hurd_sigstate fields should be kept last.

diff --git a/include/errno.h b/include/errno.h
index 89353aa..32c2f49 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -24,7 +24,7 @@ extern int rtld_errno attribute_hidden;
 
 #  include <tls.h>
 
-#  if !defined __GNU__
+#  if !(defined(__GNU__) && IS_IN (rtld))
 #   undef  errno
 #   if IS_IN (libc)
 #    define errno __libc_errno

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=ccee05fbb46233983b5dd5634330824c9d390d86

commit ccee05fbb46233983b5dd5634330824c9d390d86
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Fri Jan 19 01:20:55 2018 +0100

    t2.26/sched_param
    
    Bring back __sched_param to bits/sched.h
    
    Upstream removed it because it doesn't use it, but we do: our pthread.h
    includes thread-attr.h to bring the pthread_attr_t type to applications,
    and thus needs the sched_param structure.
    
    Note: that uses __sched_param and not sched_param because thread-attr.h
    is also also brought in from sys/types.h, which should not expose
    sched_param if not requested to by applicationg defining _POSIX_SOURCE
    and alike.
    
    Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

diff --git a/bits/sched.h b/bits/sched.h
index 8d9f077..486473e 100644
--- a/bits/sched.h
+++ b/bits/sched.h
@@ -17,6 +17,8 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef __need_schedparam
+
 #ifndef _BITS_SCHED_H
 #define _BITS_SCHED_H 1
 
@@ -32,7 +34,20 @@
 /* Data structure to describe a process' schedulability.  */
 struct sched_param
 {
-  int sched_priority;
+  int __sched_priority;
 };
 
 #endif /* bits/sched.h */
+
+#endif	/* need schedparam */
+
+#if !defined __defined_schedparam \
+    && (defined __need_schedparam || defined _SCHED_H)
+# define __defined_schedparam	1
+/* Data structure to describe a process' schedulability.  */
+struct __sched_param
+  {
+    int __sched_priority;
+  };
+# undef __need_schedparam
+#endif
diff --git a/posix/sched.h b/posix/sched.h
index 619b3b3..67691a1 100644
--- a/posix/sched.h
+++ b/posix/sched.h
@@ -43,9 +43,8 @@ typedef __pid_t pid_t;
 #include <bits/sched.h>
 #include <bits/cpu-set.h>
 
-/* Backward compatibility.  */
-#define sched_priority    sched_priority
-#define __sched_priority  sched_priority
+/* Define the real names for the elements of `struct sched_param'.  */
+#define sched_priority    __sched_priority
 
 
 __BEGIN_DECLS

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=78462ad3945f8ebe3ba096219c3055a6b68c7c1a

commit 78462ad3945f8ebe3ba096219c3055a6b68c7c1a
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 18 23:53:22 2018 +0100

    t2.25/tls
    
    Fix tls support for glibc 2.25
    
    * csu/libc-start.c (LIBC_START_MAIN) [__GNU__]: Do not call
    __libc_setup_tls.
    * sysdeps/mach/hurd/i386/init-first.c (init): Call __libc_setup_tls.
    
    Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

diff --git a/csu/libc-start.c b/csu/libc-start.c
index 605222f..8e92cc0 100644
--- a/csu/libc-start.c
+++ b/csu/libc-start.c
@@ -193,8 +193,10 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL),
   /* Perform IREL{,A} relocations.  */
   ARCH_SETUP_IREL ();
 
+#ifndef __GNU__
   /* The stack guard goes into the TCB, so initialize it early.  */
   __libc_setup_tls ();
+#endif
 
   /* In some architectures, IREL{,A} relocations happen after TLS setup in
      order to let IFUNC resolvers benefit from TCB information, e.g. powerpc's
diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c
index 0ee207a..e9c2a3c 100644
--- a/sysdeps/mach/hurd/i386/init-first.c
+++ b/sysdeps/mach/hurd/i386/init-first.c
@@ -186,7 +186,8 @@ init (int *data)
       assert (d->phdrsz % sizeof (ElfW(Phdr)) == 0);
     }
 
-  /* We need to setup TLS before starting the signal thread.  */
+  /* We need to setup TLS before starting sigthread and set stack guard.  */
+  __libc_setup_tls ();
   extern void __pthread_initialize_minimal (void);
   if (__pthread_initialize_minimal != NULL)
     __pthread_initialize_minimal ();

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f03acb7dd202f01353db49fbea9825957e53312a

commit f03acb7dd202f01353db49fbea9825957e53312a
Author: Samuel Thibault <samuel.thibault@gnu.org>
Date:   Thu Jan 18 23:49:53 2018 +0100

    t/tls
    
    hurd: add TLS support
    
    2009-07-30  Samuel Thibault  <samuel.thibault@gnu.org>
    
    	Add TLS support: __mach_setup_tls allocates and sets
    	architecture state for the TLS area.  i386 fork needs to
    	propagate the segment kernel definitions.
    
    	* sysdeps/mach/hurd/bits/libc-lock.h [_LIBC - 0]: Include <tls.h>
    	* sysdeps/mach/hurd/tls.h: Include <stdint.h> and <sysdep.h>
    	* include/errno.h (__GNU__): Do not define TLS errno for now.
    
    	* sysdeps/generic/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR): New
    	macro.
    	* sysdeps/mach/thread_state.h (MACHINE_THREAD_STATE_FIX_NEW): New macro.
    	* sysdeps/mach/i386/thread_state.h (MACHINE_NEW_THREAD_STATE_FLAVOR):
    	New macro, defined to i386_THREAD_STATE.
    	(MACHINE_THREAD_STATE_FLAVOR): Define to i386_REGS_SEGS_STATE instead
    	of i386_THREAD_STATE.
    	(MACHINE_THREAD_STATE_FIX_NEW): New macro, reads segments.
    
    	* sysdeps/mach/hurd/i386/trampoline.c (_hurd_setup_sighandler): Use
    	i386_REGS_SEGS_STATE instead of i386_THREAD_STATE.
    
    	* sysdeps/mach/hurd/i386/tls.h (__i386_selector_is_ldt): New
    	macro.
    	(_hurd_tls_init): Use kern_return_t error type.  Use
    	__i386_selector_is_ldt to test for LDT segment type.
    	(_hurd_tls_fork): Use kern_return_t error type.  Duplicate existing LDT
    	descriptor instead of creating a new one.
    	(_hurd_tls_new): New function, creates a new descriptor and updates tcb.
    
    	* mach/mach.h (__mach_setup_tls,mach_setup_tls): Add declarations.
    	* mach/setup-thread.c: Include <ldsodefs.h>.
    	(__mach_setup_thread): Use MACHINE_NEW_THREAD_STATE_FLAVOR instead of
    	MACHINE_THREAD_STATE_FLAVOR.
    	(__mach_setup_tls): New function.
    	* hurd/hurdfault.c (_hurdsig_fault_init): Call
    	MACHINE_THREAD_STATE_FIX_NEW.
    
    	* sysdeps/mach/hurd/profil.c (update_waiter): Call __mach_setup_tls.
    	* sysdeps/mach/hurd/setitimer.c (setitimer_locked): Call
    	__mach_setup_tls.
    	* hurd/hurdsig.c (_hurdsig_init): Call __mach_setup_tls.
    	* sysdeps/mach/hurd/fork.c (__fork): Call _hurd_tls_fork for
    	sigthread.  Pass kernel thread to _hurd_tls_fork.
    	* sysdeps/mach/hurd/i386/init-first.c (init): Move ELF header parsing
    	after getting up the environment pointer.  Call
    	__pthread_initialize_minimal.
    	* csu/libc-start.c (LIBC_START_MAIN) [__GNU__]: Do not call
    	__pthread_initialize_minimal.

diff --git a/include/errno.h b/include/errno.h
index 3c3d228..89353aa 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -24,13 +24,15 @@ extern int rtld_errno attribute_hidden;
 
 #  include <tls.h>
 
-#  undef  errno
-#  if IS_IN (libc)
-#   define errno __libc_errno
-#  else
-#   define errno errno		/* For #ifndef errno tests.  */
-#  endif
+#  if !defined __GNU__
+#   undef  errno
+#   if IS_IN (libc)
+#    define errno __libc_errno
+#   else
+#    define errno errno		/* For #ifndef errno tests.  */
+#   endif
 extern __thread int errno attribute_tls_model_ie;
+#  endif
 
 # endif	/* IS_IN_LIB */
 
diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c
index f4a4df3..0ee207a 100644
--- a/sysdeps/mach/hurd/i386/init-first.c
+++ b/sysdeps/mach/hurd/i386/init-first.c
@@ -108,32 +108,10 @@ init1 (int argc, char *arg0, ...)
      then after the environment pointers there is no Hurd
      data block; the argument strings start there.  */
   if ((void *) d == argv[0])
-    {
-#ifndef SHARED
-      /* With a new enough linker (binutils-2.23 or better),
-         the magic __ehdr_start symbol will be available and
-         __libc_start_main will have done this that way already.  */
-      if (_dl_phdr == NULL)
-        {
-          /* We may need to see our own phdrs, e.g. for TLS setup.
-             Try the usual kludge to find the headers without help from
-             the exec server.  */
-          extern const void __executable_start;
-          const ElfW(Ehdr) *const ehdr = &__executable_start;
-          _dl_phdr = (const void *) ehdr + ehdr->e_phoff;
-          _dl_phnum = ehdr->e_phnum;
-          assert (ehdr->e_phentsize == sizeof (ElfW(Phdr)));
-        }
-#endif
-      return;
-    }
+    return;
 
 #ifndef SHARED
   __libc_enable_secure = d->flags & EXEC_SECURE;
-
-  _dl_phdr = (ElfW(Phdr) *) d->phdr;
-  _dl_phnum = d->phdrsz / sizeof (ElfW(Phdr));
-  assert (d->phdrsz % sizeof (ElfW(Phdr)) == 0);
 #endif
 
   _hurd_init_dtable = d->dtable;
@@ -180,6 +158,39 @@ init (int *data)
     ++envp;
   d = (void *) ++envp;
 
+#ifndef SHARED
+  /* If we are the bootstrap task started by the kernel,
+     then after the environment pointers there is no Hurd
+     data block; the argument strings start there.  */
+  if ((void *) d == argv[0])
+    {
+      /* With a new enough linker (binutils-2.23 or better),
+	 the magic __ehdr_start symbol will be available and
+	 __libc_start_main will have done this that way already.  */
+      if (_dl_phdr == NULL)
+        {
+	  /* We may need to see our own phdrs, e.g. for TLS setup.
+	     Try the usual kludge to find the headers without help from
+	     the exec server.  */
+	  extern const void __executable_start;
+	  const ElfW(Ehdr) *const ehdr = &__executable_start;
+	  _dl_phdr = (const void *) ehdr + ehdr->e_phoff;
+	  _dl_phnum = ehdr->e_phnum;
+	  assert (ehdr->e_phentsize == sizeof (ElfW(Phdr)));
+        }
+    }
+  else
+    {
+      _dl_phdr = (ElfW(Phdr) *) d->phdr;
+      _dl_phnum = d->phdrsz / sizeof (ElfW(Phdr));
+      assert (d->phdrsz % sizeof (ElfW(Phdr)) == 0);
+    }
+
+  /* We need to setup TLS before starting the signal thread.  */
+  extern void __pthread_initialize_minimal (void);
+  if (__pthread_initialize_minimal != NULL)
+    __pthread_initialize_minimal ();
+#endif
 
   /* After possibly switching stacks, call `init1' (above) with the user
      code as the return address, and the argument data immediately above
diff --git a/sysdeps/mach/hurd/libc-lock.h b/sysdeps/mach/hurd/libc-lock.h
index ed45f07..e30f9b1 100644
--- a/sysdeps/mach/hurd/libc-lock.h
+++ b/sysdeps/mach/hurd/libc-lock.h
@@ -20,6 +20,9 @@
 #define _LIBC_LOCK_H 1
 
 #if (_LIBC - 0) || (_CTHREADS_ - 0)
+# if (_LIBC - 0)
+#  include <tls.h>
+# endif
 #include <cthreads.h>
 
 /* The locking here is very inexpensive, even for inlining.  */

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=42c4aaa587222ac05a69048f07da8dadebded38f

commit 42c4aaa587222ac05a69048f07da8dadebded38f
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 18 23:38:57 2018 +0100

    t/posix_thread
    
    Declare that we have a libpthread.
    
    The additional version in Versions.def should be updated when we'd
    actually get the libpthread commited into glibc (as well as in
    libpthread/Versions).
    
    Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

diff --git a/sysdeps/mach/hurd/bits/local_lim.h b/sysdeps/mach/hurd/bits/local_lim.h
index 8a1af91..97f87ad 100644
--- a/sysdeps/mach/hurd/bits/local_lim.h
+++ b/sysdeps/mach/hurd/bits/local_lim.h
@@ -32,3 +32,12 @@
    suitable, and `sysconf' will return a number at least as large.  */
 
 #define NGROUPS_MAX	256
+
+/* The number of data keys per process.  */
+#define _POSIX_THREAD_KEYS_MAX	128
+
+/* Controlling the iterations of destructors for thread-specific data.  */
+#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS	4
+
+/* The number of threads per process.  */
+#define _POSIX_THREAD_THREADS_MAX	64
diff --git a/sysdeps/mach/hurd/bits/posix_opt.h b/sysdeps/mach/hurd/bits/posix_opt.h
index 828d7ff..e0df9bf 100644
--- a/sysdeps/mach/hurd/bits/posix_opt.h
+++ b/sysdeps/mach/hurd/bits/posix_opt.h
@@ -71,24 +71,38 @@
 /* XPG4.2 shared memory is not supported.  */
 #undef	_XOPEN_SHM
 
-/* We do not have the POSIX threads interface.  */
-#define _POSIX_THREADS	-1
+/* Tell we have POSIX threads.  */
+#define _POSIX_THREADS	200112L
 
 /* We have the reentrant functions described in POSIX.  */
 #define _POSIX_REENTRANT_FUNCTIONS      1
 #define _POSIX_THREAD_SAFE_FUNCTIONS	200809L
 
-/* These are all things that won't be supported when _POSIX_THREADS is not.  */
+/* We do not provide priority scheduling for threads.  */
 #define _POSIX_THREAD_PRIORITY_SCHEDULING	-1
-#define _POSIX_THREAD_ATTR_STACKSIZE		-1
-#define _POSIX_THREAD_ATTR_STACKADDR		-1
+
+/* We support user-defined stack sizes.  */
+#define _POSIX_THREAD_ATTR_STACKSIZE	200112L
+
+/* We support user-defined stacks.  */
+#define _POSIX_THREAD_ATTR_STACKADDR	200112L
+
+/* We do not support priority inheritence.  */
 #define _POSIX_THREAD_PRIO_INHERIT		-1
+
+/* We do not support priority protection.  */
 #define _POSIX_THREAD_PRIO_PROTECT		-1
+
 #ifdef __USE_XOPEN2K8
+/* We do not support priority inheritence for robust mutexes.  */
 # define _POSIX_THREAD_ROBUST_PRIO_INHERIT	-1
+
+/* We do not support priority protection for robust mutexes.  */
 # define _POSIX_THREAD_ROBUST_PRIO_PROTECT	-1
 #endif
-#define _POSIX_SEMAPHORES			-1
+
+/* We support POSIX.1b semaphores.  */
+#define _POSIX_SEMAPHORES			200112L
 
 /* Real-time signals are not yet supported.  */
 #define _POSIX_REALTIME_SIGNALS	-1
@@ -121,17 +135,17 @@
 /* GNU libc provides regular expression handling.  */
 #define _POSIX_REGEXP	1
 
-/* Reader/Writer locks are not available.  */
-#define _POSIX_READER_WRITER_LOCKS	-1
+/* Reader/Writer locks are available.  */
+#define _POSIX_READER_WRITER_LOCKS	200112L
 
 /* We have a POSIX shell.  */
 #define _POSIX_SHELL	1
 
-/* We cannot support the Timeouts option without _POSIX_THREADS.  */
-#define _POSIX_TIMEOUTS	-1
+/* We support the Timeouts option.  */
+#define _POSIX_TIMEOUTS	200112L
 
-/* We do not support spinlocks.  */
-#define _POSIX_SPIN_LOCKS	-1
+/* We support spinlocks.  */
+#define _POSIX_SPIN_LOCKS	200112L
 
 /* The `spawn' function family is supported.  */
 #define _POSIX_SPAWN	200809L
@@ -139,8 +153,8 @@
 /* We do not have POSIX timers, but could in future without ABI change.  */
 #define _POSIX_TIMERS	0
 
-/* The barrier functions are not available.  */
-#define _POSIX_BARRIERS	-1
+/* We support barrier functions.  */
+#define _POSIX_BARRIERS	200112L
 
 /* POSIX message queues could be available in future.  */
 #define	_POSIX_MESSAGE_PASSING	0

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=9d4b9202d0c52dc9c78bdcefd5a5d4935452e235

commit 9d4b9202d0c52dc9c78bdcefd5a5d4935452e235
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Jan 18 23:38:29 2018 +0100

    t/libpthread_depends
    
    libpthread needs to be built before modules which need it.
    
    Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

diff --git a/nscd/Depend b/nscd/Depend
index 6c1aa44..ba64a2d 100644
--- a/nscd/Depend
+++ b/nscd/Depend
@@ -1 +1,2 @@
 nptl
+htl
diff --git a/resolv/Depend b/resolv/Depend
index 6c1aa44..ba64a2d 100644
--- a/resolv/Depend
+++ b/resolv/Depend
@@ -1 +1,2 @@
 nptl
+htl
diff --git a/rt/Depend b/rt/Depend
index 6c1aa44..ba64a2d 100644
--- a/rt/Depend
+++ b/rt/Depend
@@ -1 +1,2 @@
 nptl
+htl

-----------------------------------------------------------------------


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