1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* Initialization code run first thing by the ELF startup code. Linux/PowerPC.
Copyright (C) 2007-2019 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 <dl-vdso.h>
#include <libc-vdso.h>
int (*VDSO_SYMBOL(gettimeofday)) (struct timeval *, void *)
attribute_hidden;
int (*VDSO_SYMBOL(clock_gettime)) (clockid_t, struct timespec *);
int (*VDSO_SYMBOL(clock_getres)) (clockid_t, struct timespec *);
unsigned long long (*VDSO_SYMBOL(get_tbfreq)) (void);
int (*VDSO_SYMBOL(getcpu)) (unsigned *, unsigned *);
time_t (*VDSO_SYMBOL(time)) (time_t *);
#if defined(__PPC64__) || defined(__powerpc64__)
void *VDSO_SYMBOL(sigtramp_rt64);
#else
void *VDSO_SYMBOL(sigtramp32);
void *VDSO_SYMBOL(sigtramp_rt32);
#endif
static inline void
_libc_vdso_platform_setup (void)
{
PREPARE_VERSION_KNOWN (linux2615, LINUX_2_6_15);
void *p = _dl_vdso_vsym ("__kernel_gettimeofday", &linux2615);
PTR_MANGLE (p);
VDSO_SYMBOL (gettimeofday) = p;
p = _dl_vdso_vsym ("__kernel_clock_gettime", &linux2615);
PTR_MANGLE (p);
VDSO_SYMBOL (clock_gettime) = p;
p = _dl_vdso_vsym ("__kernel_clock_getres", &linux2615);
PTR_MANGLE (p);
VDSO_SYMBOL (clock_getres) = p;
p = _dl_vdso_vsym ("__kernel_get_tbfreq", &linux2615);
PTR_MANGLE (p);
VDSO_SYMBOL (get_tbfreq) = p;
p = _dl_vdso_vsym ("__kernel_getcpu", &linux2615);
PTR_MANGLE (p);
VDSO_SYMBOL (getcpu) = p;
p = _dl_vdso_vsym ("__kernel_time", &linux2615);
PTR_MANGLE (p);
VDSO_SYMBOL (time) = p;
/* PPC64 uses only one signal trampoline symbol, while PPC32 will use
two depending if SA_SIGINFO is used (__kernel_sigtramp_rt32) or not
(__kernel_sigtramp32).
There is no need to pointer mangle these symbol because they will
used only for pointer comparison. */
#if defined(__PPC64__) || defined(__powerpc64__)
VDSO_SYMBOL(sigtramp_rt64) = _dl_vdso_vsym ("__kernel_sigtramp_rt64",
&linux2615);
#else
VDSO_SYMBOL(sigtramp32) = _dl_vdso_vsym ("__kernel_sigtramp32", &linux2615);
VDSO_SYMBOL(sigtramp_rt32) = _dl_vdso_vsym ("__kernel_sigtramp_rt32",
&linux2615);
#endif
}
#define VDSO_SETUP _libc_vdso_platform_setup
#include <csu/init-first.c>
|
