mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 13:30:06 +00:00
f543259500
Return EXIT_FAILURE only if the level 2 libx86-64-isa-level.so is used on x86-64 baseline machine.
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/* Check ISA level on shared object in glibc-hwcaps subdirectories.
|
|
Copyright (C) 2021 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>
|