| /* Copyright (C) 2001-2014 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/>. */ |
| |
| #ifdef SHARED |
| /* Redefine time so that the compiler won't complain about the type |
| mismatch with the IFUNC selector in strong_alias, below. */ |
| #undef time |
| #define time __redirect_time |
| #include <time.h> |
| |
| #include <dl-vdso.h> |
| |
| #define VSYSCALL_ADDR_vtime 0xffffffffff600400 |
| |
| /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle |
| ifunc symbol properly. */ |
| extern __typeof (__redirect_time) __libc_time; |
| void *time_ifunc (void) __asm__ ("__libc_time"); |
| |
| void * |
| time_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_time", &linux26) ?: (void *) VSYSCALL_ADDR_vtime; |
| } |
| __asm (".type __libc_time, %gnu_indirect_function"); |
| |
| #undef time |
| strong_alias (__libc_time, time) |
| libc_hidden_ver (__libc_time, time) |
| |
| #else |
| |
| # include <time.h> |
| # include <sysdep.h> |
| |
| time_t |
| time (time_t *t) |
| { |
| INTERNAL_SYSCALL_DECL (err); |
| return INTERNAL_SYSCALL (time, err, 1, t); |
| } |
| |
| #endif |
