]>
Commit | Line | Data |
---|---|---|
93c65d43 | 1 | /* Initialization code run first thing by the ELF startup code. Linux/x86-64. |
d4697bc9 | 2 | Copyright (C) 2007-2014 Free Software Foundation, Inc. |
8c2e201b UD |
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 | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the 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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
8c2e201b | 18 | |
75fb247e | 19 | #ifdef SHARED |
e38ba7ab UD |
20 | # include <time.h> |
21 | # include <sysdep.h> | |
75fb247e UD |
22 | # include <dl-vdso.h> |
23 | # include <bits/libc-vdso.h> | |
8c2e201b | 24 | |
52386be7 | 25 | long int (*__vdso_clock_gettime) (clockid_t, struct timespec *) |
d250df8c UD |
26 | __attribute__ ((nocommon)); |
27 | strong_alias (__vdso_clock_gettime, __GI___vdso_clock_gettime attribute_hidden) | |
75fb247e | 28 | |
91b392a4 | 29 | long int (*__vdso_getcpu) (unsigned *, unsigned *, void *) attribute_hidden; |
c738465a | 30 | |
75fb247e | 31 | |
e38ba7ab UD |
32 | extern long int __syscall_clock_gettime (clockid_t, struct timespec *); |
33 | ||
34 | ||
75fb247e UD |
35 | static inline void |
36 | _libc_vdso_platform_setup (void) | |
37 | { | |
fb86328a | 38 | PREPARE_VERSION (linux26, "LINUX_2.6", 61765110); |
75fb247e | 39 | |
8542dee3 | 40 | void *p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux26); |
e38ba7ab UD |
41 | if (p == NULL) |
42 | p = __syscall_clock_gettime; | |
3c87d79d | 43 | PTR_MANGLE (p); |
d250df8c | 44 | __GI___vdso_clock_gettime = p; |
a8509ca5 | 45 | |
8542dee3 | 46 | p = _dl_vdso_vsym ("__vdso_getcpu", &linux26); |
a8509ca5 UD |
47 | /* If the vDSO is not available we fall back on the old vsyscall. */ |
48 | #define VSYSCALL_ADDR_vgetcpu 0xffffffffff600800 | |
49 | if (p == NULL) | |
50 | p = (void *) VSYSCALL_ADDR_vgetcpu; | |
51 | PTR_MANGLE (p); | |
52 | __vdso_getcpu = p; | |
75fb247e UD |
53 | } |
54 | ||
55 | # define VDSO_SETUP _libc_vdso_platform_setup | |
56 | #endif | |
57 | ||
93c65d43 | 58 | #include <csu/init-first.c> |