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
148
|
/* Tests for x86 GLIBC_TUNABLES=glibc.cpu.hwcaps filter.
Copyright (C) 2023 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 <array_length.h>
#include <getopt.h>
#include <ifunc-impl-list.h>
#include <spawn.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <intprops.h>
#include <support/check.h>
#include <support/support.h>
#include <support/xunistd.h>
#include <support/capture_subprocess.h>
/* Nonzero if the program gets called via `exec'. */
#define CMDLINE_OPTIONS \
{ "restart", no_argument, &restart, 1 },
static int restart;
/* Disable everything. */
static const char *test_1[] =
{
"__memcpy_avx512_no_vzeroupper",
"__memcpy_avx512_unaligned",
"__memcpy_avx512_unaligned_erms",
"__memcpy_evex_unaligned",
"__memcpy_evex_unaligned_erms",
"__memcpy_avx_unaligned",
"__memcpy_avx_unaligned_erms",
"__memcpy_avx_unaligned_rtm",
"__memcpy_avx_unaligned_erms_rtm",
"__memcpy_ssse3",
};
static const struct test_t
{
const char *env;
const char *const *funcs;
size_t nfuncs;
} tests[] =
{
{
/* Disable everything. */
"-Prefer_ERMS,-Prefer_FSRM,-AVX,-AVX2,-AVX_Usable,-AVX2_Usable,"
"-AVX512F_Usable,-SSE4_1,-SSE4_2,-SSSE3,-Fast_Unaligned_Load,-ERMS,"
"-AVX_Fast_Unaligned_Load",
test_1,
array_length (test_1)
},
{
/* Same as before, but with some empty suboptions. */
",-,-Prefer_ERMS,-Prefer_FSRM,-AVX,-AVX2,-AVX_Usable,-AVX2_Usable,"
"-AVX512F_Usable,-SSE4_1,-SSE4_2,,-SSSE3,-Fast_Unaligned_Load,,-,-ERMS,"
"-AVX_Fast_Unaligned_Load,-,",
test_1,
array_length (test_1)
}
};
/* Called on process re-execution. */
_Noreturn static void
handle_restart (int ntest)
{
struct libc_ifunc_impl impls[32];
int cnt = __libc_ifunc_impl_list ("memcpy", impls, array_length (impls));
if (cnt == 0)
_exit (EXIT_SUCCESS);
TEST_VERIFY_EXIT (cnt >= 1);
for (int i = 0; i < cnt; i++)
{
for (int f = 0; f < tests[ntest].nfuncs; f++)
{
if (strcmp (impls[i].name, tests[ntest].funcs[f]) == 0)
TEST_COMPARE (impls[i].usable, false);
}
}
_exit (EXIT_SUCCESS);
}
static int
do_test (int argc, char *argv[])
{
/* We must have either:
- One our fource parameters left if called initially:
+ path to ld.so optional
+ "--library-path" optional
+ the library path optional
+ the application name
+ the test to check */
TEST_VERIFY_EXIT (argc == 2 || argc == 5);
if (restart)
handle_restart (atoi (argv[1]));
char nteststr[INT_BUFSIZE_BOUND (int)];
char *spargv[10];
{
int i = 0;
for (; i < argc - 1; i++)
spargv[i] = argv[i + 1];
spargv[i++] = (char *) "--direct";
spargv[i++] = (char *) "--restart";
spargv[i++] = nteststr;
spargv[i] = NULL;
}
for (int i = 0; i < array_length (tests); i++)
{
snprintf (nteststr, sizeof nteststr, "%d", i);
printf ("[%d] Spawned test for %s\n", i, tests[i].env);
char *tunable = xasprintf ("glibc.cpu.hwcaps=%s", tests[i].env);
setenv ("GLIBC_TUNABLES", tunable, 1);
struct support_capture_subprocess result
= support_capture_subprogram (spargv[0], spargv);
support_capture_subprocess_check (&result, "tst-tunables", 0,
sc_allow_stderr);
support_capture_subprocess_free (&result);
free (tunable);
}
return 0;
}
#define TEST_FUNCTION_ARGV do_test
#include <support/test-driver.c>
|
