| /* Copyright (C) 2002-2014 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 <sys/time.h> |
| |
| #ifdef SHARED |
| |
| # include <dl-vdso.h> |
| |
| # define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000ul |
| |
| void *gettimeofday_ifunc (void) __asm__ ("__gettimeofday"); |
| |
| void * |
| gettimeofday_ifunc (void) |
| { |
| PREPARE_VERSION (linux26, "LINUX_2.6", 61765110); |
| |
| /* If the vDSO is not available we fall back on the old vsyscall. */ |
| return (_dl_vdso_vsym ("__vdso_gettimeofday", &linux26) |
| ?: (void *) VSYSCALL_ADDR_vgettimeofday); |
| } |
| asm (".type __gettimeofday, %gnu_indirect_function"); |
| |
| /* This is doing "libc_hidden_def (__gettimeofday)" but the compiler won't |
| let us do it in C because it doesn't know we're defining __gettimeofday |
| here in this file. */ |
| asm (".globl __GI___gettimeofday\n" |
| "__GI___gettimeofday = __gettimeofday"); |
| |
| #else |
| |
| # include <sysdep.h> |
| # include <errno.h> |
| |
| int |
| __gettimeofday (struct timeval *tv, struct timezone *tz) |
| { |
| return INLINE_SYSCALL (gettimeofday, 2, tv, tz); |
| } |
| libc_hidden_def (__gettimeofday) |
| |
| #endif |
| weak_alias (__gettimeofday, gettimeofday) |
| libc_hidden_weak (gettimeofday) |
