glibc/sysdeps/unix/sysv/linux/i386/init-first.c

51 lines
1.5 KiB
C

/* Initialization code run first thing by the ELF startup code. Linux/i386.
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 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/>. */
#ifdef SHARED
# include <time.h>
# include <sysdep.h>
# include <dl-vdso.h>
# include <sysdep-vdso.h>
long int (*VDSO_SYMBOL (clock_gettime)) (clockid_t, struct timespec *)
attribute_hidden;
static long int
clock_gettime_syscall (clockid_t id, struct timespec *tp)
{
INTERNAL_SYSCALL_DECL (err);
return INTERNAL_SYSCALL (clock_gettime, err, 2, id, tp);
}
static inline void
__vdso_platform_setup (void)
{
PREPARE_VERSION_KNOWN (linux26, LINUX_2_6);
void *p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux26);
if (p == NULL)
p = clock_gettime_syscall;
PTR_MANGLE (p);
VDSO_SYMBOL (clock_gettime) = p;
}
# define VDSO_SETUP __vdso_platform_setup
#endif
#include <csu/init-first.c>