mirror of
https://sourceware.org/git/glibc.git
synced 2025-01-07 10:00:07 +00:00
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/* Tests for powerpc 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 <support/check.h>
|
|
#include <support/support.h>
|
|
#include <support/xunistd.h>
|
|
#include <sys/auxv.h>
|
|
#include <sys/wait.h>
|
|
|
|
/* Nonzero if the program gets called via `exec'. */
|
|
#define CMDLINE_OPTIONS \
|
|
{ "restart", no_argument, &restart, 1 },
|
|
static int restart;
|
|
|
|
/* Hold the four initial argument used to respawn the process, plus the extra
|
|
'--direct', '--restart', and the function to check */
|
|
static char *spargs[8];
|
|
static int fc;
|
|
|
|
/* Called on process re-execution. */
|
|
_Noreturn static void
|
|
handle_restart (int argc, char *argv[])
|
|
{
|
|
TEST_VERIFY_EXIT (argc == 1);
|
|
const char *funcname = argv[0];
|
|
|
|
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++) {
|
|
if (strcmp (impls[i].name, funcname) == 0)
|
|
{
|
|
TEST_COMPARE (impls[i].usable, false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
_exit (EXIT_SUCCESS);
|
|
}
|
|
|
|
static void
|
|
run_test (const char *filter, const char *funcname)
|
|
{
|
|
printf ("info: checking filter %s (expect %s ifunc selection to be removed)\n",
|
|
filter, funcname);
|
|
char *tunable = xasprintf ("GLIBC_TUNABLES=glibc.cpu.hwcaps=%s", filter);
|
|
char *const newenvs[] = { (char*) tunable, NULL };
|
|
spargs[fc] = (char *) funcname;
|
|
|
|
pid_t pid;
|
|
TEST_COMPARE (posix_spawn (&pid, spargs[0], NULL, NULL, spargs, newenvs), 0);
|
|
int status;
|
|
TEST_COMPARE (xwaitpid (pid, &status, 0), pid);
|
|
TEST_VERIFY (WIFEXITED (status));
|
|
TEST_VERIFY (!WIFSIGNALED (status));
|
|
TEST_COMPARE (WEXITSTATUS (status), 0);
|
|
|
|
free (tunable);
|
|
}
|
|
|
|
static int
|
|
do_test (int argc, char *argv[])
|
|
{
|
|
if (restart)
|
|
handle_restart (argc - 1, &argv[1]);
|
|
|
|
TEST_VERIFY_EXIT (argc == 2 || argc == 5);
|
|
|
|
int i;
|
|
for (i = 0; i < argc - 1; i++)
|
|
spargs[i] = argv[i + 1];
|
|
spargs[i++] = (char *) "--direct";
|
|
spargs[i++] = (char *) "--restart";
|
|
fc = i++;
|
|
spargs[i] = NULL;
|
|
|
|
unsigned long int hwcap = getauxval (AT_HWCAP);
|
|
unsigned long int hwcap2 = getauxval (AT_HWCAP2);
|
|
if (__WORDSIZE == 64)
|
|
{
|
|
if (hwcap2 & PPC_FEATURE2_ARCH_3_1)
|
|
run_test ("-arch_3_1", "__memcpy_power10");
|
|
if (hwcap2 & PPC_FEATURE2_ARCH_2_07)
|
|
run_test ("-arch_2_07", "__memcpy_power8_cached");
|
|
if (hwcap & PPC_FEATURE_ARCH_2_06)
|
|
run_test ("-arch_2_06", "__memcpy_power7");
|
|
if (hwcap & PPC_FEATURE_ARCH_2_05)
|
|
run_test ("-arch_2_06,-arch_2_05","__memcpy_power6");
|
|
run_test ("-arch_2_06,-arch_2_05,-power5+,-power5,-power4",
|
|
"__memcpy_power4");
|
|
/* Also run with valid, but empty settings. */
|
|
run_test (",-,-arch_2_06,-arch_2_05,-power5+,-power5,,-power4,-",
|
|
"__memcpy_power4");
|
|
}
|
|
else
|
|
{
|
|
if (hwcap & PPC_FEATURE_HAS_VSX)
|
|
run_test ("-vsx", "__memcpy_power7");
|
|
if (hwcap & PPC_FEATURE_ARCH_2_06)
|
|
run_test ("-arch_2_06", "__memcpy_a2");
|
|
if (hwcap & PPC_FEATURE_ARCH_2_05)
|
|
run_test ("-arch_2_05", "__memcpy_power6");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define TEST_FUNCTION_ARGV do_test
|
|
#include <support/test-driver.c>
|