[PATCH 3/3] x86: clock_gettime and timespec_get vDSO cleanup

[Adhemerval Zanella <adhemerval dot zanella at linaro dot org>]

This patch removes the x86 specific timespec_get and clock_gettime
implementation to use generic HAVE_CLOCK_GETTIME_VSYSCALL way.]

--

	* sysdeps/unix/sysv/linux/i386/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL):
	Define.
	(HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h
	(HAVE_CLOCK_GETTIME_VSYSCALL): Likewise.
	(HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/timespec_get.c: Include errno.h.
	* sysdeps/unix/sysv/linux/x86/clock_gettime.c: Remove file.
	* sysdeps/unix/sysv/linux/x86/timespec_get.c: Likewise.

---

diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 7f6fcf3..d76aca5 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -328,6 +328,10 @@ struct libc_do_syscall_args
       }									      \
     (int) resultvar; })
 
+/* List of system calls which are supported as vsyscalls.  */
+# define HAVE_CLOCK_GETTIME_VSYSCALL    1
+# define HAVE_GETTIMEOFDAY_VSYSCALL     1
+
 /* Define a macro which expands inline into the wrapper code for a system
    call.  This use is for internal calls that do not need to handle errors
    normally.  It will never touch errno.  This returns just what the kernel
diff --git a/sysdeps/unix/sysv/linux/timespec_get.c b/sysdeps/unix/sysv/linux/timespec_get.c
index 0e5f513..b42a44f 100644
--- a/sysdeps/unix/sysv/linux/timespec_get.c
+++ b/sysdeps/unix/sysv/linux/timespec_get.c
@@ -17,6 +17,7 @@
 
 #include <time.h>
 #include <sysdep.h>
+#include <errno.h>
 
 #ifdef HAVE_CLOCK_GETTIME_VSYSCALL
 # define HAVE_VSYSCALL
diff --git a/sysdeps/unix/sysv/linux/x86/clock_gettime.c b/sysdeps/unix/sysv/linux/x86/clock_gettime.c
deleted file mode 100644
index 98ffb01..0000000
--- a/sysdeps/unix/sysv/linux/x86/clock_gettime.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Get the current value of a clock.  Linux/x86 version.
-   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; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <libc-vdso.h>
-
-#ifdef SHARED
-# define SYSCALL_GETTIME(id, tp) \
-  ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
-  long int v_ret;							  \
-  PTR_DEMANGLE (f);							  \
-  v_ret = (*f) (id, tp);						  \
-  if (INTERNAL_SYSCALL_ERROR_P (v_ret, )) {				  \
-    __set_errno (INTERNAL_SYSCALL_ERRNO (v_ret, ));			  \
-    v_ret = -1;								  \
-  }									  \
-  v_ret; })
-#endif
-
-#include <sysdeps/unix/sysv/linux/clock_gettime.c>
diff --git a/sysdeps/unix/sysv/linux/x86/timespec_get.c b/sysdeps/unix/sysv/linux/x86/timespec_get.c
deleted file mode 100644
index b21efce..0000000
--- a/sysdeps/unix/sysv/linux/x86/timespec_get.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/* timespec_get -- returns the calendar time based on a given time base.
-   Linux/x86 version.
-   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; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <libc-vdso.h>
-
-#ifdef SHARED
-# define INTERNAL_GETTIME(id, tp) \
-  ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
-  PTR_DEMANGLE (f);							  \
-  (*f) (id, tp); })
-#endif
-
-#include <sysdeps/unix/sysv/linux/timespec_get.c>
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index cc66093..bea3192 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -252,6 +252,10 @@
 # undef INTERNAL_SYSCALL_ERRNO
 # define INTERNAL_SYSCALL_ERRNO(val, err)	(-(val))
 
+/* List of system calls which are supported as vsyscalls.  */
+# define HAVE_CLOCK_GETTIME_VSYSCALL    1
+# define HAVE_GETTIMEOFDAY_VSYSCALL     1
+
 # define LOAD_ARGS_0()
 # define LOAD_REGS_0
 # define ASM_ARGS_0