mirror of git://sourceware.org/git/glibc.git
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* glibc-hwcaps subdirectory test. x86_64 version.
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Copyright (C) 2020-2021 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 <stdio.h>
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#include <support/check.h>
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#include <sys/param.h>
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#include <elf.h>
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#include <get-isa-level.h>
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extern int marker2 (void);
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extern int marker3 (void);
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extern int marker4 (void);
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/* Return the x86-64-vN level, 1 for the baseline. */
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static int
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compute_level (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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if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V2))
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return 1;
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if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V3))
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return 2;
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if (!(isa_level & GNU_PROPERTY_X86_ISA_1_V4))
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return 3;
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return 4;
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}
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static int
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do_test (void)
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{
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int level = compute_level ();
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printf ("info: detected x86-64 micro-architecture level: %d\n", level);
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TEST_COMPARE (marker2 (), MIN (level, 2));
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TEST_COMPARE (marker3 (), MIN (level, 3));
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TEST_COMPARE (marker4 (), MIN (level, 4));
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return 0;
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}
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#include <support/test-driver.c>
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