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/* Check ISA level on shared object in glibc-hwcaps subdirectories.
Copyright (C) 2021-2024 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 <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <elf.h>
#include <get-isa-level.h>
#include <support/check.h>
#include <support/test-driver.h>
extern int dso_isa_level (void);
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)
return EXIT_FAILURE;
int level = dso_isa_level ();
int ret;
switch (level)
{
case 1:
case 2:
/* The default libx86-64-isa-level.so is used. */
printf ("The default shared library is used.\n");
if (has_isa_v3 || has_isa_v4 || (!has_isa_v2 && level == 2))
ret = EXIT_FAILURE;
else
ret = EXIT_SUCCESS;
break;
case 3:
/* libx86-64-isa-level.so marked as x86-64 ISA level 3 needed in
x86-64-v2 should be ignored on lesser CPU. */
printf ("x86-64 ISA level 3 shared library is used.\n");
if (has_isa_v4 || !has_isa_v3)
ret = EXIT_FAILURE;
else
ret = EXIT_SUCCESS;
break;
case 4:
/* libx86-64-isa-level.so marked as x86-64 ISA level 4 needed in
x86-64-v3 should be ignored on lesser CPU. */
printf ("x86-64 ISA level 4 shared library is used.\n");
if (has_isa_v4)
ret = EXIT_SUCCESS;
else
ret = EXIT_FAILURE;
break;
default:
abort ();
}
return ret;
}
#include <support/test-driver.c>
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