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* sysdeps/unix/sysv/linux/x86_64/libc-start.c

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(_libc_vdso_platform_setup): If vDSO is not available point
	__vdso_gettimeofday to the vsyscall.
	* sysdeps/unix/sysv/linux/x86_64/gettimeofday.S [SHARED]: Use
	__vdso_gettimeofday instead of vsyscall.
This commit is contained in:
Ulrich Drepper 2007-08-13 18:47:42 +00:00
parent f8de5057b9
commit 9c6f6953fd
4 changed files with 40 additions and 1 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2007-08-13 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/x86_64/libc-start.c
(_libc_vdso_platform_setup): If vDSO is not available point
__vdso_gettimeofday to the vsyscall.
* sysdeps/unix/sysv/linux/x86_64/gettimeofday.S [SHARED]: Use
__vdso_gettimeofday instead of vsyscall.
2007-08-13 Jakub Jelinek <jakub@redhat.com> 2007-08-13 Jakub Jelinek <jakub@redhat.com>
* nscd/servicescache.c: Include kernel-features.h. * nscd/servicescache.c: Include kernel-features.h.

22
nptl/ChangeLog
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@ -1,3 +1,25 @@
2007-08-13 Jakub Jelinek <jakub@redhat.com>
* allocatestack.c: Include kernel-features.h.
* pthread_create.c: Likewise.
* pthread_mutex_init.c: Likewise.
* init.c: Likewise.
* pthread_cond_timedwait.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_wrlock.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_rdlock.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_unlock.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedwrlock.S:
Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_rwlock_timedrdlock.S:
Likewise.
* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
* sysdeps/unix/sysv/linux/sh/pthread_cond_timedwait.S: Likewise.
2007-08-12 Jakub Jelinek <jakub@redhat.com> 2007-08-12 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h * sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h

7
sysdeps/unix/sysv/linux/x86_64/gettimeofday.S
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@ -1,4 +1,4 @@
/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. /* Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or The GNU C Library is free software; you can redistribute it and/or
@ -28,7 +28,12 @@ ENTRY (__gettimeofday)
/* Align stack. */ /* Align stack. */
sub $0x8, %rsp sub $0x8, %rsp
cfi_adjust_cfa_offset(8) cfi_adjust_cfa_offset(8)
#ifdef SHARED
movq __vdso_gettimeofday(%rip), %rax
PTR_DEMANGLE (%rax)
#else
movq $VSYSCALL_ADDR_vgettimeofday, %rax movq $VSYSCALL_ADDR_vgettimeofday, %rax
#endif
callq *%rax callq *%rax
/* Check error return. */ /* Check error return. */
cmpl $-4095, %eax cmpl $-4095, %eax

4
sysdeps/unix/sysv/linux/x86_64/libc-start.c
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@ -31,6 +31,10 @@ _libc_vdso_platform_setup (void)
PREPARE_VERSION (linux26, "LINUX_2.6", 61765110); PREPARE_VERSION (linux26, "LINUX_2.6", 61765110);
void *p = _dl_vdso_vsym ("gettimeofday", &linux26); void *p = _dl_vdso_vsym ("gettimeofday", &linux26);
/* If the vDSO is not available we fall back on the old vsyscall. */
#define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000ul
if (p == NULL)
p = (void *) VSYSCALL_ADDR_vgettimeofday;
PTR_MANGLE (p); PTR_MANGLE (p);
__vdso_gettimeofday = p; __vdso_gettimeofday = p;