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/* glibc-hwcaps subdirectory test. x86_64 version.
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 <stdio.h>
#include <support/check.h>
#include <sys/param.h>
#include <elf.h>
#include <get-isa-level.h>
extern int marker2 (void);
extern int marker3 (void);
extern int marker4 (void);
/* Return the x86-64-vN level, 1 for the baseline. */
static int
compute_level (void)
{
const struct cpu_features *cpu_features = __get_cpu_features ();
unsigned int isa_level = get_isa_level (cpu_features);
if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V2))
return 1;
if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V3))
return 2;
if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V4))
return 3;
return 4;
}
static int
do_test (void)
{
int level = compute_level ();
printf ("info: detected x86-64 micro-architecture level: %d\n", level);
TEST_COMPARE (marker2 (), MIN (level, 2));
TEST_COMPARE (marker3 (), MIN (level, 3));
TEST_COMPARE (marker4 (), MIN (level, 4));
return 0;
}
#include <support/test-driver.c>
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