1 /* Copyright (C) 2002-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
24 # define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000ul
26 void *gettimeofday_ifunc (void) __asm__ ("__gettimeofday");
29 gettimeofday_ifunc (void)
31 PREPARE_VERSION (linux26
, "LINUX_2.6", 61765110);
33 /* If the vDSO is not available we fall back on the old vsyscall. */
34 return (_dl_vdso_vsym ("__vdso_gettimeofday", &linux26
)
35 ?: (void *) VSYSCALL_ADDR_vgettimeofday
);
37 asm (".type __gettimeofday, %gnu_indirect_function");
39 /* This is doing "libc_hidden_def (__gettimeofday)" but the compiler won't
40 let us do it in C because it doesn't know we're defining __gettimeofday
42 asm (".globl __GI___gettimeofday\n"
43 "__GI___gettimeofday = __gettimeofday");
51 __gettimeofday (struct timeval
*tv
, struct timezone
*tz
)
53 return INLINE_SYSCALL (gettimeofday
, 2, tv
, tz
);
55 libc_hidden_def (__gettimeofday
)
58 weak_alias (__gettimeofday
, gettimeofday
)
59 libc_hidden_weak (gettimeofday
)