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84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/* Check ISA level on shared object in glibc-hwcaps subdirectories.
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Copyright (C) 2021-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <elf.h>
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#include <get-isa-level.h>
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#include <support/check.h>
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#include <support/test-driver.h>
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extern int dso_isa_level (void);
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static int
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do_test (void)
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{
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const struct cpu_features *cpu_features = __get_cpu_features ();
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unsigned int isa_level = get_isa_level (cpu_features);
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bool has_isa_baseline = ((isa_level & GNU_PROPERTY_X86_ISA_1_BASELINE)
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== GNU_PROPERTY_X86_ISA_1_BASELINE);
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bool has_isa_v2 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V2)
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== GNU_PROPERTY_X86_ISA_1_V2);
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bool has_isa_v3 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V3)
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== GNU_PROPERTY_X86_ISA_1_V3);
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bool has_isa_v4 = ((isa_level & GNU_PROPERTY_X86_ISA_1_V4)
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== GNU_PROPERTY_X86_ISA_1_V4);
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if (!has_isa_baseline)
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return EXIT_FAILURE;
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int level = dso_isa_level ();
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int ret;
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switch (level)
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{
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case 1:
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case 2:
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/* The default libx86-64-isa-level.so is used. */
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printf ("The default shared library is used.\n");
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if (has_isa_v3 || has_isa_v4 || (!has_isa_v2 && level == 2))
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ret = EXIT_FAILURE;
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else
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ret = EXIT_SUCCESS;
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break;
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case 3:
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/* libx86-64-isa-level.so marked as x86-64 ISA level 3 needed in
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x86-64-v2 should be ignored on lesser CPU. */
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printf ("x86-64 ISA level 3 shared library is used.\n");
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if (has_isa_v4 || !has_isa_v3)
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ret = EXIT_FAILURE;
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else
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ret = EXIT_SUCCESS;
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break;
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case 4:
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/* libx86-64-isa-level.so marked as x86-64 ISA level 4 needed in
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x86-64-v3 should be ignored on lesser CPU. */
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printf ("x86-64 ISA level 4 shared library is used.\n");
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if (has_isa_v4)
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ret = EXIT_SUCCESS;
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else
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ret = EXIT_FAILURE;
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break;
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default:
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abort ();
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}
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return ret;
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}
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#include <support/test-driver.c>
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