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50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
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/* Test case for preserved AVX registers in dynamic linker.
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Copyright (C) 2017 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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<http://www.gnu.org/licenses/>. */
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#include <cpuid.h>
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int tst_avx_aux (void);
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static int
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avx_enabled (void)
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{
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unsigned int eax, ebx, ecx, edx;
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if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0
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|| (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE))
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return 0;
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/* Check the OS has AVX and SSE saving enabled. */
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asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0));
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return (eax & 6) == 6;
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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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/* Run AVX test only if AVX is supported. */
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if (avx_enabled ())
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return tst_avx_aux ();
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else
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return 77;
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}
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#define TEST_FUNCTION do_test ()
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#include "../../test-skeleton.c"
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