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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* Test TLS with varied alignment and multiple modules and threads.
Copyright (C) 2024 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
<https://www.gnu.org/licenses/>. */
#include <support/check.h>
#include <support/xthread.h>
#include <tst-tls22.h>
static void
check_addrs_align (const struct obj_addrs *addrs)
{
TEST_COMPARE (addrs->addr_tdata1 & (__alignof__ (int) - 1), 0);
TEST_COMPARE (addrs->addr_tdata2 & 0xf, 0);
TEST_COMPARE (addrs->addr_tdata3 & 0xfff, 0);
TEST_COMPARE (addrs->addr_tbss1 & (__alignof__ (int) - 1), 0);
TEST_COMPARE (addrs->addr_tbss2 & 0xf, 0);
TEST_COMPARE (addrs->addr_tbss3 & 0xfff, 0);
}
static void
check_addrs_same (const struct obj_addrs *addrs1,
const struct obj_addrs *addrs2)
{
TEST_COMPARE (addrs1->addr_tdata1, addrs2->addr_tdata1);
TEST_COMPARE (addrs1->addr_tdata2, addrs2->addr_tdata2);
TEST_COMPARE (addrs1->addr_tdata3, addrs2->addr_tdata3);
TEST_COMPARE (addrs1->addr_tbss1, addrs2->addr_tbss1);
TEST_COMPARE (addrs1->addr_tbss2, addrs2->addr_tbss2);
TEST_COMPARE (addrs1->addr_tbss3, addrs2->addr_tbss3);
}
static void
check_vals_before (const struct obj_values *vals)
{
TEST_COMPARE (vals->val_tdata1, 1);
TEST_COMPARE (vals->val_tdata2, 2);
TEST_COMPARE (vals->val_tdata3, 4);
TEST_COMPARE (vals->val_tbss1, 0);
TEST_COMPARE (vals->val_tbss2, 0);
TEST_COMPARE (vals->val_tbss3, 0);
}
static void
check_vals_after (const struct obj_values *vals, int base_val)
{
TEST_COMPARE (vals->val_tdata1, base_val);
TEST_COMPARE (vals->val_tdata2, base_val + 1);
TEST_COMPARE (vals->val_tdata3, base_val + 2);
TEST_COMPARE (vals->val_tbss1, base_val + 3);
TEST_COMPARE (vals->val_tbss2, base_val + 4);
TEST_COMPARE (vals->val_tbss3, base_val + 5);
}
static void
check_one_thread (const struct one_thread_data *data, int base_val)
{
check_vals_before (&data->exe_before);
check_vals_before (&data->mod1_before);
check_vals_before (&data->mod2_before);
check_vals_after (&data->exe_after, base_val);
check_vals_after (&data->mod1_after, base_val);
check_vals_after (&data->mod2_after, base_val);
check_addrs_align (&data->exe_self);
check_addrs_same (&data->exe_self, &data->exe_from_mod1);
check_addrs_same (&data->exe_self, &data->exe_from_mod2);
check_addrs_align (&data->mod1_self);
check_addrs_same (&data->mod1_self, &data->mod1_from_exe);
check_addrs_align (&data->mod2_self);
check_addrs_same (&data->mod2_self, &data->mod2_from_exe);
check_addrs_same (&data->mod2_self, &data->mod2_from_mod1);
}
static void *
thread_func (void *arg)
{
int base_val = (int) (intptr_t) arg + 10;
struct one_thread_data data;
/* Record the addresses of variables as seen from the main
executable (which should be the same as seen from the other
modules), and their initial values. */
STORE_ADDRS (&data.exe_self, exe);
STORE_ADDRS (&data.mod1_from_exe, mod1);
STORE_ADDRS (&data.mod2_from_exe, mod2);
STORE_VALUES (&data.exe_before, exe);
STORE_VALUES (&data.mod1_before, mod1);
STORE_VALUES (&data.mod2_before, mod2);
/* Overwrite the value of variables. */
OVERWRITE_VALUES (exe, base_val);
OVERWRITE_VALUES (mod1, base_val);
OVERWRITE_VALUES (mod2, base_val);
/* Record the addresses of variables as seen from other modules. */
test_mod1 (&data, base_val);
test_mod2 (&data, base_val);
/* Record the overwritten values (thus making sure that no other
thread running in parallel has changed this thread's values). */
STORE_VALUES (&data.exe_after, exe);
STORE_VALUES (&data.mod1_after, mod1);
STORE_VALUES (&data.mod2_after, mod2);
/* Check all the addresses and values recorded. */
check_one_thread (&data, base_val);
return NULL;
}
#define NUM_ITERS 50
#define NUM_THREADS 16
/* For NUM_ITERS iterations, repeatedly create NUM_THREADS threads.
In each thread, we determine the addresses of TLS objects (both
from the module defining those objects and from other modules), and
their initial values, and store in values that are then read back;
we check that each object's address is the same regardless of the
module in which it is determined, that alignment of objects is as
required, and that the values of objects are as expected. */
static int
do_test (void)
{
for (size_t i = 0; i < NUM_ITERS; i++)
{
pthread_t threads[NUM_THREADS];
for (size_t j = 0; j < NUM_THREADS; j++)
threads[j] = xpthread_create (NULL, thread_func, (void *) j);
/* Also run checks in the main thread, but only once because
those values don't get reinitialized. */
if (i == 0)
thread_func ((void *) NUM_THREADS);
for (size_t j = 0; j < NUM_THREADS; j++)
xpthread_join (threads[j]);
}
return 0;
}
#include <support/test-driver.c>
|
