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[ARM,MIPS] Remove pre-2.2 kernel support


In line with a libc patch I've now committed, I've applied these ARM and 
MIPS ports changes to remove support for pre-2.2 kernels (which was 
already dead since those ports don't allow configuring for kernels before 
2.6.16 and 2.6.12 respectively).

Alpha and M68K maintainers should note what I said in 
<http://sourceware.org/ml/libc-alpha/2012-05/msg00380.html>:

M68K should change its arch_minimum_kernel to 2.2.0 or later; alpha's 
kernel-features.h defines an alpha-specific __ASSUME_TIMEVAL64 for 2.2.0 
and later and all the alpha-specific code conditioned on that can have 
conditions removed (actually, those conditions are already dead; alpha 
requires 2.6.0 as arch_minimum_kernel and has 2.6.9 the documented minimum 
kernel for NPTL in README).

diff --git a/ChangeLog.arm b/ChangeLog.arm
index cf88eda..53359c6 100644
--- a/ChangeLog.arm
+++ b/ChangeLog.arm
@@ -1,3 +1,9 @@
+2012-05-14  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/arm/sigaction.c
+	[!__ASSUME_REALTIME_SIGNALS]: Remove conditional code.
+	[__ASSUME_REALTIME_SIGNALS]: Make code unconditional.
+
 2012-05-07  Carlos O'Donell  <carlos_odonell@mentor.com>
 
 	* sysdeps/arm/configure.in: Set libc_cv_arm_pcs_vfp.
diff --git a/ChangeLog.mips b/ChangeLog.mips
index eb61f04..db20a78 100644
--- a/ChangeLog.mips
+++ b/ChangeLog.mips
@@ -1,3 +1,21 @@
+2012-05-14  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/mips/pread.c [!__ASSUME_PREAD_SYSCALL]:
+	Remove conditional code.
+	[__ASSUME_PREAD_SYSCALL]: Make code unconditional.
+	* sysdeps/unix/sysv/linux/mips/pread64.c
+	[!__ASSUME_PREAD_SYSCALL]: Remove conditional code.
+	[__ASSUME_PREAD_SYSCALL]: Make code unconditional.
+	* sysdeps/unix/sysv/linux/mips/pwrite.c
+	[!__ASSUME_PWRITE_SYSCALL]: Remove conditional code.
+	[__ASSUME_PWRITE_SYSCALL]: Make code unconditional.
+	* sysdeps/unix/sysv/linux/mips/pwrite64.c
+	[!__ASSUME_PWRITE_SYSCALL]: Remove conditional code.
+	[__ASSUME_PWRITE_SYSCALL]: Make code unconditional.
+	* sysdeps/unix/sysv/linux/mips/sigaction.c
+	[!__ASSUME_REALTIME_SIGNALS]: Remove conditional code.
+	[__ASSUME_REALTIME_SIGNALS]: Make code unconditional.
+
 2012-05-11  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/mips/dl-lookup.c: Update from generic version.
diff --git a/sysdeps/unix/sysv/linux/arm/sigaction.c b/sysdeps/unix/sysv/linux/arm/sigaction.c
index e7b51c6..76037cb 100644
--- a/sysdeps/unix/sysv/linux/arm/sigaction.c
+++ b/sysdeps/unix/sysv/linux/arm/sigaction.c
@@ -28,10 +28,6 @@
    translate it here.  */
 #include <kernel_sigaction.h>
 
-/* The variable is shared between all wrappers around signal handling
-   functions which have RT equivalents.  */
-int __libc_missing_rt_sigs;
-
 #define SA_RESTORER	0x04000000
 
 extern void __default_sa_restorer_v1(void);
@@ -69,97 +65,42 @@ __libc_sigaction (sig, act, oact)
      const struct sigaction *act;
      struct sigaction *oact;
 {
-#ifndef __ASSUME_REALTIME_SIGNALS
-  struct old_kernel_sigaction k_sigact, k_osigact;
-#endif
   int result;
 
-#ifdef __NR_rt_sigaction
-  /* First try the RT signals.  */
-# ifndef __ASSUME_REALTIME_SIGNALS
-  if (!__libc_missing_rt_sigs)
-# endif
-    {
-      struct kernel_sigaction kact, koact;
-# ifndef __ASSUME_REALTIME_SIGNALS
-      int saved_errno = errno;
-# endif
-
-      if (act)
-	{
-	  kact.k_sa_handler = act->sa_handler;
-	  memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
-	  kact.sa_flags = act->sa_flags;
-# ifdef HAVE_SA_RESTORER
-	  if (kact.sa_flags & SA_RESTORER)
-	    kact.sa_restorer = act->sa_restorer;
-	  else
-	    {
-	      kact.sa_restorer = choose_restorer (kact.sa_flags);
-	      kact.sa_flags |= SA_RESTORER;
-	    }
-# endif
-	}
-
-      /* XXX The size argument hopefully will have to be changed to the
-	 real size of the user-level sigset_t.  */
-      result = INLINE_SYSCALL (rt_sigaction, 4, sig,
-			       act ? __ptrvalue (&kact) : NULL,
-			       oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
-
-# ifndef __ASSUME_REALTIME_SIGNALS
-      if (result >= 0 || errno != ENOSYS)
-# endif
-	{
-	  if (oact && result >= 0)
-	    {
-	      oact->sa_handler = koact.k_sa_handler;
-	      memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
-	      oact->sa_flags = koact.sa_flags;
-# ifdef HAVE_SA_RESTORER
-	      oact->sa_restorer = koact.sa_restorer;
-# endif
-	    }
-	  return result;
-	}
-
-# ifndef __ASSUME_REALTIME_SIGNALS
-      __set_errno (saved_errno);
-      __libc_missing_rt_sigs = 1;
-# endif
-    }
-#endif
+  struct kernel_sigaction kact, koact;
 
-#ifndef __ASSUME_REALTIME_SIGNALS
   if (act)
     {
-      k_sigact.k_sa_handler = act->sa_handler;
-      k_sigact.sa_mask = act->sa_mask.__val[0];
-      k_sigact.sa_flags = act->sa_flags;
-# ifdef HAVE_SA_RESTORER
-      if (k_sigact.sa_flags & SA_RESTORER)
-	k_sigact.sa_restorer = act->sa_restorer;
+      kact.k_sa_handler = act->sa_handler;
+      memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
+      kact.sa_flags = act->sa_flags;
+#ifdef HAVE_SA_RESTORER
+      if (kact.sa_flags & SA_RESTORER)
+	kact.sa_restorer = act->sa_restorer;
       else
 	{
-	  k_sigact.sa_restorer = choose_restorer (k_sigact.sa_flags);
-	  k_sigact.sa_flags |= SA_RESTORER;
+	  kact.sa_restorer = choose_restorer (kact.sa_flags);
+	  kact.sa_flags |= SA_RESTORER;
 	}
-# endif
+#endif
     }
-  result = INLINE_SYSCALL (sigaction, 3, sig,
-			   act ? __ptrvalue (&k_sigact) : NULL,
-			   oact ? __ptrvalue (&k_osigact) : NULL);
+
+  /* XXX The size argument hopefully will have to be changed to the
+     real size of the user-level sigset_t.  */
+  result = INLINE_SYSCALL (rt_sigaction, 4, sig,
+			   act ? __ptrvalue (&kact) : NULL,
+			   oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
+
   if (oact && result >= 0)
     {
-      oact->sa_handler = k_osigact.k_sa_handler;
-      oact->sa_mask.__val[0] = k_osigact.sa_mask;
-      oact->sa_flags = k_osigact.sa_flags;
-# ifdef HAVE_SA_RESTORER
-      oact->sa_restorer = k_osigact.sa_restorer;
-# endif
+      oact->sa_handler = koact.k_sa_handler;
+      memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
+      oact->sa_flags = koact.sa_flags;
+#ifdef HAVE_SA_RESTORER
+      oact->sa_restorer = koact.sa_restorer;
+#endif
     }
   return result;
-#endif
 }
 libc_hidden_def (__libc_sigaction)
 
diff --git a/sysdeps/unix/sysv/linux/mips/pread.c b/sysdeps/unix/sysv/linux/mips/pread.c
index ff83498..a868130 100644
--- a/sysdeps/unix/sysv/linux/mips/pread.c
+++ b/sysdeps/unix/sysv/linux/mips/pread.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003, 2004
-   Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -38,12 +37,6 @@
 # define __NR_pread __NR_pread64
 #endif
 
-#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0
-
-# if __ASSUME_PREAD_SYSCALL == 0
-static ssize_t __emulate_pread (int fd, void *buf, size_t count,
-				off_t offset) internal_function;
-# endif
 
 ssize_t
 __libc_pread (fd, buf, count, offset)
@@ -60,7 +53,6 @@ __libc_pread (fd, buf, count, offset)
 
   if (SINGLE_THREAD_P)
     {
-      /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
       result = INLINE_SYSCALL (pread, 4, fd, CHECK_N (buf, count), count,
 			       offset);
@@ -68,28 +60,17 @@ __libc_pread (fd, buf, count, offset)
       result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0,
 			       __LONG_LONG_PAIR (offset >> 31, offset));
 #endif
-# if __ASSUME_PREAD_SYSCALL == 0
-      if (result == -1 && errno == ENOSYS)
-        /* No system call available.  Use the emulation.  */
-        result = __emulate_pread (fd, buf, count, offset);
-# endif
       return result;
     }
 
   int oldtype = LIBC_CANCEL_ASYNC ();
 
-  /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
   result = INLINE_SYSCALL (pread, 4, fd, CHECK_N (buf, count), count, offset);
 #else
   result = INLINE_SYSCALL (pread, 6, fd, CHECK_N (buf, count), count, 0,
 			   __LONG_LONG_PAIR (offset >> 31, offset));
 #endif
-# if __ASSUME_PREAD_SYSCALL == 0
-  if (result == -1 && errno == ENOSYS)
-    /* No system call available.  Use the emulation.  */
-    result = __emulate_pread (fd, buf, count, offset);
-# endif
 
   LIBC_CANCEL_RESET (oldtype);
 
@@ -98,11 +79,3 @@ __libc_pread (fd, buf, count, offset)
 
 strong_alias (__libc_pread, __pread)
 weak_alias (__libc_pread, pread)
-
-# define __libc_pread(fd, buf, count, offset) \
-     static internal_function __emulate_pread (fd, buf, count, offset)
-#endif
-
-#if __ASSUME_PREAD_SYSCALL == 0
-# include <sysdeps/posix/pread.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/mips/pread64.c b/sysdeps/unix/sysv/linux/mips/pread64.c
index 05c7c14..6f9b005 100644
--- a/sysdeps/unix/sysv/linux/mips/pread64.c
+++ b/sysdeps/unix/sysv/linux/mips/pread64.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003, 2004
-   Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -37,12 +36,6 @@
 # define __NR_pread __NR_pread64
 #endif
 
-#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0
-
-# if __ASSUME_PREAD_SYSCALL == 0
-static ssize_t __emulate_pread64 (int fd, void *buf, size_t count,
-				  off64_t offset) internal_function;
-# endif
 
 ssize_t
 __libc_pread64 (fd, buf, count, offset)
@@ -56,7 +49,6 @@ __libc_pread64 (fd, buf, count, offset)
 
   if (SINGLE_THREAD_P)
     {
-     /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
       result = INLINE_SYSCALL (pread, 4, fd, CHECK_N (buf, count), count,
 			       offset);
@@ -65,17 +57,11 @@ __libc_pread64 (fd, buf, count, offset)
 			      __LONG_LONG_PAIR ((off_t) (offset >> 32),
 			      (off_t) (offset & 0xffffffff)));
 #endif
-# if __ASSUME_PREAD_SYSCALL == 0
-     if (result == -1 && errno == ENOSYS)
-     /* No system call available.  Use the emulation.  */
-     result = __emulate_pread64 (fd, buf, count, offset);
-# endif
      return result;
     }
 
   int oldtype = LIBC_CANCEL_ASYNC ();
 
-  /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
   result = INLINE_SYSCALL (pread, 4, fd, CHECK_N (buf, count), count, offset);
 #else
@@ -83,11 +69,6 @@ __libc_pread64 (fd, buf, count, offset)
 			   __LONG_LONG_PAIR ((off_t) (offset >> 32),
 					     (off_t) (offset & 0xffffffff)));
 #endif
-# if __ASSUME_PREAD_SYSCALL == 0
-  if (result == -1 && errno == ENOSYS)
-    /* No system call available.  Use the emulation.  */
-    result = __emulate_pread64 (fd, buf, count, offset);
-# endif
 
   LIBC_CANCEL_RESET (oldtype);
 
@@ -96,11 +77,3 @@ __libc_pread64 (fd, buf, count, offset)
 
 weak_alias (__libc_pread64, __pread64)
 weak_alias (__libc_pread64, pread64)
-
-# define __libc_pread64(fd, buf, count, offset) \
-     static internal_function __emulate_pread64 (fd, buf, count, offset)
-#endif
-
-#if __ASSUME_PREAD_SYSCALL == 0
-# include <sysdeps/posix/pread64.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/mips/pwrite.c b/sysdeps/unix/sysv/linux/mips/pwrite.c
index 07331f0..cc0c3b7 100644
--- a/sysdeps/unix/sysv/linux/mips/pwrite.c
+++ b/sysdeps/unix/sysv/linux/mips/pwrite.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003, 2004
-   Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -38,12 +37,6 @@
 # define __NR_pwrite __NR_pwrite64
 #endif
 
-#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0
-
-# if __ASSUME_PWRITE_SYSCALL == 0
-static ssize_t __emulate_pwrite (int fd, const void *buf, size_t count,
-				 off_t offset) internal_function;
-# endif
 
 ssize_t
 __libc_pwrite (fd, buf, count, offset)
@@ -60,7 +53,6 @@ __libc_pwrite (fd, buf, count, offset)
 
   if (SINGLE_THREAD_P)
     {
-      /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
       result = INLINE_SYSCALL (pwrite, 4, fd, CHECK_N (buf, count), count,
 			       offset);
@@ -68,28 +60,17 @@ __libc_pwrite (fd, buf, count, offset)
       result = INLINE_SYSCALL (pwrite, 6, fd, CHECK_N (buf, count), count, 0,
 			       __LONG_LONG_PAIR (offset >> 31, offset));
 #endif
-# if __ASSUME_PWRITE_SYSCALL == 0
-      if (result == -1 && errno == ENOSYS)
-        /* No system call available.  Use the emulation.  */
-        result = __emulate_pwrite (fd, buf, count, offset);
-# endif
       return result;
     }
 
   int oldtype = LIBC_CANCEL_ASYNC ();
 
-  /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
   result = INLINE_SYSCALL (pwrite, 4, fd, CHECK_N (buf, count), count, offset);
 #else
   result = INLINE_SYSCALL (pwrite, 6, fd, CHECK_N (buf, count), count, 0,
 			   __LONG_LONG_PAIR (offset >> 31, offset));
 #endif
-# if __ASSUME_PWRITE_SYSCALL == 0
-  if (result == -1 && errno == ENOSYS)
-    /* No system call available.  Use the emulation.  */
-    result = __emulate_pwrite (fd, buf, count, offset);
-# endif
 
   LIBC_CANCEL_RESET (oldtype);
 
@@ -98,11 +79,3 @@ __libc_pwrite (fd, buf, count, offset)
 
 strong_alias (__libc_pwrite, __pwrite)
 weak_alias (__libc_pwrite, pwrite)
-
-# define __libc_pwrite(fd, buf, count, offset) \
-     static internal_function __emulate_pwrite (fd, buf, count, offset)
-#endif
-
-#if __ASSUME_PWRITE_SYSCALL == 0
-# include <sysdeps/posix/pwrite.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/mips/pwrite64.c b/sysdeps/unix/sysv/linux/mips/pwrite64.c
index 39bbda8..d60accd 100644
--- a/sysdeps/unix/sysv/linux/mips/pwrite64.c
+++ b/sysdeps/unix/sysv/linux/mips/pwrite64.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2002, 2003, 2004
-   Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ralf Baechle <ralf@gnu.org>, 1998.
 
@@ -37,12 +36,6 @@
 # define __NR_pwrite __NR_pwrite64
 #endif
 
-#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0
-
-# if __ASSUME_PWRITE_SYSCALL == 0
-static ssize_t __emulate_pwrite64 (int fd, const void *buf, size_t count,
-				   off64_t offset) internal_function;
-# endif
 
 ssize_t
 __libc_pwrite64 (fd, buf, count, offset)
@@ -55,7 +48,6 @@ __libc_pwrite64 (fd, buf, count, offset)
 
   if (SINGLE_THREAD_P)
     {
-     /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
       result = INLINE_SYSCALL (pwrite, 4, fd, CHECK_N (buf, count), count,
 			       offset);
@@ -64,18 +56,12 @@ __libc_pwrite64 (fd, buf, count, offset)
 			      __LONG_LONG_PAIR ((off_t) (offset >> 32),
 			     (off_t) (offset & 0xffffffff)));
 #endif
-# if __ASSUME_PWRITE_SYSCALL == 0
-     if (result == -1 && errno == ENOSYS)
-     /* No system call available.  Use the emulation.  */
-     result = __emulate_pwrite64 (fd, buf, count, offset);
-# endif
 
      return result;
     }
 
   int oldtype = LIBC_CANCEL_ASYNC ();
 
-  /* First try the syscall.  */
 #if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
   result = INLINE_SYSCALL (pwrite, 4, fd, CHECK_N (buf, count), count, offset);
 #else
@@ -83,11 +69,6 @@ __libc_pwrite64 (fd, buf, count, offset)
 			   __LONG_LONG_PAIR ((off_t) (offset >> 32),
 					     (off_t) (offset & 0xffffffff)));
 #endif
-# if __ASSUME_PWRITE_SYSCALL == 0
-  if (result == -1 && errno == ENOSYS)
-    /* No system call available.  Use the emulation.  */
-    result = __emulate_pwrite64 (fd, buf, count, offset);
-# endif
 
   LIBC_CANCEL_RESET (oldtype);
 
@@ -97,11 +78,3 @@ __libc_pwrite64 (fd, buf, count, offset)
 weak_alias (__libc_pwrite64, __pwrite64)
 libc_hidden_weak (__pwrite64)
 weak_alias (__libc_pwrite64, pwrite64)
-
-# define __libc_pwrite64(fd, buf, count, offset) \
-     static internal_function __emulate_pwrite64 (fd, buf, count, offset)
-#endif
-
-#if __ASSUME_PWRITE_SYSCALL == 0
-# include <sysdeps/posix/pwrite64.c>
-#endif
diff --git a/sysdeps/unix/sysv/linux/mips/sigaction.c b/sysdeps/unix/sysv/linux/mips/sigaction.c
index c3a4670..d646af3 100644
--- a/sysdeps/unix/sysv/linux/mips/sigaction.c
+++ b/sysdeps/unix/sysv/linux/mips/sigaction.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997,1998,1999,2000,2002,2003,2004,2006
-	Free Software Foundation, Inc.
+/* Copyright (C) 1997-2012 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
@@ -33,13 +32,6 @@
    translate it here.  */
 #include <kernel_sigaction.h>
 
-#if __ASSUME_REALTIME_SIGNALS == 0
-/* The variable is shared between all wrappers around signal handling
-   functions which have RT equivalents.	 This is the definition.  */
-int __libc_missing_rt_sigs;
-
-#endif
-
 #if _MIPS_SIM != _ABIO32
 
 # ifdef __NR_rt_sigreturn
@@ -58,97 +50,42 @@ __libc_sigaction (sig, act, oact)
      const struct sigaction *act;
      struct sigaction *oact;
 {
-#if __ASSUME_REALTIME_SIGNALS == 0
-  struct old_kernel_sigaction k_sigact, k_osigact;
-#endif
   int result;
 
-#if defined __NR_rt_sigaction || __ASSUME_REALTIME_SIGNALS > 0
-  /* First try the RT signals.	*/
-# if __ASSUME_REALTIME_SIGNALS == 0
-  if (!__libc_missing_rt_sigs)
-# endif
-    {
-      struct kernel_sigaction kact, koact;
-      /* Save the current error value for later.  We need not do this
-	 if we are guaranteed to have realtime signals.	 */
-# if __ASSUME_REALTIME_SIGNALS == 0
-      int saved_errno = errno;
-# endif
-
-      if (act)
-	{
-	  kact.k_sa_handler = act->sa_handler;
-	  memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kernel_sigset_t));
-	  kact.sa_flags = act->sa_flags;
-# ifdef HAVE_SA_RESTORER
-#  if _MIPS_SIM == _ABIO32
-	  kact.sa_restorer = act->sa_restorer;
-#  else
-	  kact.sa_restorer = &restore_rt;
-#  endif
-# endif
-	}
-
-      /* XXX The size argument hopefully will have to be changed to the
-	 real size of the user-level sigset_t.	*/
-      result = INLINE_SYSCALL (rt_sigaction, 4, sig,
-			       act ? __ptrvalue (&kact) : NULL,
-			       oact ? __ptrvalue (&koact) : NULL,
-			       sizeof (kernel_sigset_t));
+  struct kernel_sigaction kact, koact;
 
-# if __ASSUME_REALTIME_SIGNALS == 0
-      if (result >= 0 || errno != ENOSYS)
-# endif
-	{
-	  if (oact && result >= 0)
-	    {
-	      oact->sa_handler = koact.k_sa_handler;
-	      memcpy (&oact->sa_mask, &koact.sa_mask,
-				sizeof (kernel_sigset_t));
-	      oact->sa_flags = koact.sa_flags;
-# ifdef HAVE_SA_RESTORER
-	      oact->sa_restorer = koact.sa_restorer;
-# endif
-	    }
-	  return result;
-	}
-
-# if __ASSUME_REALTIME_SIGNALS == 0
-      __set_errno (saved_errno);
-      __libc_missing_rt_sigs = 1;
-# endif
-    }
-#endif
-
-#if __ASSUME_REALTIME_SIGNALS == 0
   if (act)
     {
-      k_sigact.k_sa_handler = act->sa_handler;
-      k_sigact.sa_mask = act->sa_mask.__val[0];
-      k_sigact.sa_flags = act->sa_flags;
-# ifdef HAVE_SA_RESTORER
-      k_sigact.sa_restorer = act->sa_restorer;
+      kact.k_sa_handler = act->sa_handler;
+      memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kernel_sigset_t));
+      kact.sa_flags = act->sa_flags;
+#ifdef HAVE_SA_RESTORER
+# if _MIPS_SIM == _ABIO32
+      kact.sa_restorer = act->sa_restorer;
+# else
+      kact.sa_restorer = &restore_rt;
 # endif
+#endif
     }
-  result = INLINE_SYSCALL (sigaction, 3, sig,
-			   act ? __ptrvalue (&k_sigact) : NULL,
-			   oact ? __ptrvalue (&k_osigact) : NULL);
+
+  /* XXX The size argument hopefully will have to be changed to the
+     real size of the user-level sigset_t.	*/
+  result = INLINE_SYSCALL (rt_sigaction, 4, sig,
+			   act ? __ptrvalue (&kact) : NULL,
+			   oact ? __ptrvalue (&koact) : NULL,
+			   sizeof (kernel_sigset_t));
+
   if (oact && result >= 0)
     {
-      oact->sa_handler = k_osigact.k_sa_handler;
-      oact->sa_mask.__val[0] = k_osigact.sa_mask;
-      oact->sa_flags = k_osigact.sa_flags;
-# ifdef HAVE_SA_RESTORER
-#  if _MIPS_SIM == _ABIO32
-      oact->sa_restorer = k_osigact.sa_restorer;
-#  else
-      oact->sa_restorer = &restore;
-#  endif
-# endif
+      oact->sa_handler = koact.k_sa_handler;
+      memcpy (&oact->sa_mask, &koact.sa_mask,
+	      sizeof (kernel_sigset_t));
+      oact->sa_flags = koact.sa_flags;
+#ifdef HAVE_SA_RESTORER
+      oact->sa_restorer = koact.sa_restorer;
+#endif
     }
   return result;
-#endif
 }
 libc_hidden_def (__libc_sigaction)
 

-- 
Joseph S. Myers
joseph@codesourcery.com


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