projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 2018-2019 Free Software Foundation, Inc. |
| 3c7b9f1f SE |
2 | |
| 3 | This file is part of the GNU C Library. | |
| 4 | ||
| 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 License as | |
| 7 | published by the Free Software Foundation; either version 2.1 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 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. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 3c7b9f1f SE |
18 | |
| 19 | /* Get the current time of day and timezone information, | |
| 20 | putting it into *tv and *tz. If tz is null, *tz is not filled. | |
| 21 | Returns 0 on success, -1 on errors. */ | |
| 22 | ||
| 23 | #ifdef SHARED | |
| 24 | ||
| 25 | # define __gettimeofday __redirect___gettimeofday | |
| 26 | # include <sys/time.h> | |
| 27 | # undef __gettimeofday | |
| 28 | # define HAVE_VSYSCALL | |
| 29 | # include <dl-vdso.h> | |
| 30 | # include <sysdep-vdso.h> | |
| 31 | ||
| 32 | /* Used as a fallback in the ifunc resolver if VDSO is not available | |
| 33 | and for libc.so internal __gettimeofday calls. */ | |
| 34 | ||
| 35 | static int | |
| 36 | __gettimeofday_vsyscall (struct timeval *tv, struct timezone *tz) | |
| 37 | { | |
| 38 | return INLINE_VSYSCALL (gettimeofday, 2, tv, tz); | |
| 39 | } | |
| 40 | ||
| 85c748f9 | 41 | /* PREPARE_VERSION_KNOWN will need an __LP64__ ifdef when ILP32 support |
| 3c7b9f1f SE |
42 | goes in. See _libc_vdso_platform_setup in |
| 43 | sysdeps/unix/sysv/linux/aarch64/init-first.c. */ | |
| 44 | ||
| 45 | # undef INIT_ARCH | |
| 46 | # define INIT_ARCH() \ | |
| 85c748f9 | 47 | PREPARE_VERSION_KNOWN (linux_version, LINUX_2_6_39); \ |
| 3c7b9f1f SE |
48 | void *vdso_gettimeofday = \ |
| 49 | _dl_vdso_vsym ("__kernel_gettimeofday", &linux_version); | |
| 50 | ||
| 51 | libc_ifunc_hidden (__redirect___gettimeofday, __gettimeofday, | |
| 52 | vdso_gettimeofday ?: (void *) __gettimeofday_vsyscall) | |
| 53 | ||
| 54 | __hidden_ver1 (__gettimeofday_vsyscall, __GI___gettimeofday, | |
| 55 | __gettimeofday_vsyscall); | |
| 56 | ||
| 57 | #else | |
| 58 | ||
| 59 | # include <sys/time.h> | |
| 60 | # include <sysdep.h> | |
| 61 | int | |
| 62 | __gettimeofday (struct timeval *tv, struct timezone *tz) | |
| 63 | { | |
| 64 | return INLINE_SYSCALL (gettimeofday, 2, tv, tz); | |
| 65 | } | |
| 66 | libc_hidden_def (__gettimeofday) | |
| 67 | ||
| 68 | #endif | |
| 69 | ||
| 70 | weak_alias (__gettimeofday, gettimeofday) | |
| 71 | libc_hidden_weak (gettimeofday) |