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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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/>. */
/* Check alignment, overlapping and layout of TLS variables. */
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <pthreadP.h>
#include <sys/param.h>
#include "tst-tls5.h"
#ifdef TLS_REGISTER
struct tls_obj tls_registry[64];
static int
tls_addr_cmp (const void *a, const void *b)
{
if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr)
return -1;
if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr)
return 1;
return 0;
}
static int
do_test (void)
{
size_t cnt, i;
int res = 0;
uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0;
for (cnt = 0; tls_registry[cnt].name; ++cnt);
tls_registry[cnt].name = NULL;
tls_registry[cnt].addr = (uintptr_t) pthread_self ();
tls_registry[cnt].size = sizeof (struct pthread);
tls_registry[cnt++].align = __alignof__ (struct pthread);
qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp);
for (i = 0; i < cnt; ++i)
{
printf ("%s%s = %p, size %zd, align %zd",
tls_registry[i].name ? "&" : "",
tls_registry[i].name ?: "pthread_self ()",
(void *) tls_registry[i].addr,
tls_registry[i].size, tls_registry[i].align);
if (tls_registry[i].addr & (tls_registry[i].align - 1))
{
fputs (", WRONG ALIGNMENT", stdout);
res = 1;
}
if (i > 0
&& (tls_registry[i - 1].addr + tls_registry[i - 1].size
> tls_registry[i].addr))
{
fputs (", ADDRESS OVERLAP", stdout);
res = 1;
}
puts ("");
if (tls_registry[i].name)
{
min_addr = MIN (tls_registry[i].addr, min_addr);
max_addr = MAX (tls_registry[i].addr + tls_registry[i].size,
max_addr);
}
}
if (cnt > 1)
{
#if TLS_TCB_AT_TP
if (tls_registry[cnt - 1].name)
{
puts ("pthread_self () not larger than all TLS addresses");
res = 1;
}
else
max_addr = MAX (tls_registry[cnt - 1].addr, max_addr);
#elif TLS_DTV_AT_TP
if (tls_registry[0].name)
{
puts ("pthread_self () not smaller than all TLS addresses");
res = 1;
}
#else
abort ();
#endif
printf ("Initial TLS used block size %zd\n",
(size_t) (max_addr - min_addr));
}
return res;
}
#define TEST_FUNCTION do_test ()
#else
#define TEST_FUNCTION 0
#endif
#include "../test-skeleton.c"
|
GitWeb