| /* gettimeofday - get the time. Linux/x86 version. |
| Copyright (C) 2015-2018 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> |
| # include <errno.h> |
| |
| static int |
| __gettimeofday_syscall (struct timeval *tv, struct timezone *tz) |
| { |
| return INLINE_SYSCALL (gettimeofday, 2, tv, tz); |
| } |
| |
| # ifndef __gettimeofday_type |
| /* The i386 gettimeofday.c includes this file with a defined |
| __gettimeofday_type macro. For x86_64 we have to define it to __gettimeofday |
| as the internal symbol is the ifunc'ed one. */ |
| # define __gettimeofday_type __gettimeofday |
| # endif |
| |
| # undef INIT_ARCH |
| # define INIT_ARCH() PREPARE_VERSION_KNOWN (linux26, LINUX_2_6) |
| /* If the vDSO is not available we fall back to syscall. */ |
| libc_ifunc_hidden (__gettimeofday_type, __gettimeofday, |
| (_dl_vdso_vsym ("__vdso_gettimeofday", &linux26) |
| ?: &__gettimeofday_syscall)) |
| libc_hidden_def (__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) |