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/* Check ISA level on dlopened shared object.
Copyright (C) 2020-2024 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 <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <elf.h>
#include <get-isa-level.h>
#include <support/xdlfcn.h>
#include <support/check.h>
#include <support/test-driver.h>
static void
do_test_1 (const char *modname, bool fail)
{
int (*fp) (void);
void *h;
h = dlopen (modname, RTLD_LAZY);
if (h == NULL)
{
const char *err = dlerror ();
if (fail)
{
if (strstr (err, "CPU ISA level is lower than required") == NULL)
FAIL_EXIT1 ("incorrect dlopen '%s' error: %s\n", modname, err);
return;
}
FAIL_EXIT1 ("cannot open '%s': %s\n", modname, err);
}
if (fail)
FAIL_EXIT1 ("dlopen '%s' should have failed\n", modname);
fp = xdlsym (h, "test");
if (fp () != 0)
FAIL_EXIT1 ("test () != 0\n");
dlclose (h);
}
static int
do_test (void)
{
const struct cpu_features *cpu_features = __get_cpu_features ();
unsigned int isa_level = get_isa_level (cpu_features);
bool has_isa_baseline = ((isa_level & GNU_PROPERTY_X86_ISA_1_BASELINE)
== GNU_PROPERTY_X86_ISA_1_BASELINE);
bool has_isa_v2 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V2)
== GNU_PROPERTY_X86_ISA_1_V2);
bool has_isa_v3 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V3)
== GNU_PROPERTY_X86_ISA_1_V3);
bool has_isa_v4 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V4)
== GNU_PROPERTY_X86_ISA_1_V4);
if (!has_isa_baseline)
{
do_test_1 ("tst-isa-level-mod-1-baseline.so", true);
return EXIT_SUCCESS;
}
do_test_1 ("tst-isa-level-mod-1-baseline.so", false);
/* Skip on x86-64-v4 platforms since dlopen v4 module always works. */
if (has_isa_v4)
return EXIT_SUCCESS;
do_test_1 ("tst-isa-level-mod-1-v4.so", true);
/* Skip on x86-64-v3 platforms since dlopen v3 module always works. */
if (has_isa_v3)
return EXIT_SUCCESS;
do_test_1 ("tst-isa-level-mod-1-v3.so", true);
/* Skip on x86-64-v2 platforms since dlopen v2 module always works. */
if (has_isa_v2)
return EXIT_SUCCESS;
do_test_1 ("tst-isa-level-mod-1-v2.so", true);
return EXIT_SUCCESS;
}
#include <support/test-driver.c>
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