mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 23:00:22 +00:00
149 lines
4.0 KiB
C
149 lines
4.0 KiB
C
/* Tests for x86 GLIBC_TUNABLES=glibc.cpu.hwcaps filter.
|
|
Copyright (C) 2023-2024 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
|
|
<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,-AVX512F,-AVX512VL,"
|
|
"-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,-AVX512F,-AVX512VL,"
|
|
"-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>
|