1 /* Initialization code run first thing by the ELF startup code. Linux/x86-64.
2 Copyright (C) 2007-2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
23 # include <bits/libc-vdso.h>
25 long int (*__vdso_clock_gettime) (clockid_t, struct timespec *)
26 __attribute__ ((nocommon));
27 strong_alias (__vdso_clock_gettime, __GI___vdso_clock_gettime attribute_hidden)
29 long int (*__vdso_getcpu) (unsigned *, unsigned *, void *) attribute_hidden;
32 extern long int __syscall_clock_gettime (clockid_t, struct timespec *);
36 _libc_vdso_platform_setup (void)
38 PREPARE_VERSION (linux26, "LINUX_2.6", 61765110);
40 void *p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux26);
42 p = __syscall_clock_gettime;
44 __GI___vdso_clock_gettime = p;
46 p = _dl_vdso_vsym ("__vdso_getcpu", &linux26);
47 /* If the vDSO is not available we fall back on the old vsyscall. */
48 #define VSYSCALL_ADDR_vgetcpu 0xffffffffff600800
50 p = (void *) VSYSCALL_ADDR_vgetcpu;
55 # define VDSO_SETUP _libc_vdso_platform_setup
58 #include <csu/init-first.c>