| 1 | /* Test case for preserved AVX registers in dynamic linker. |
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| 2 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <cpuid.h> |
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| 20 | |
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| 21 | int tst_avx_aux (void); |
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| 22 | |
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| 23 | static int |
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| 24 | avx_enabled (void) |
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| 25 | { |
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| 26 | unsigned int eax, ebx, ecx, edx; |
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| 27 | |
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| 28 | if (__get_cpuid (leaf: 1, eax: &eax, ebx: &ebx, ecx: &ecx, edx: &edx) == 0 |
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| 29 | || (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE)) |
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| 30 | return 0; |
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| 31 | |
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| 32 | /* Check the OS has AVX and SSE saving enabled. */ |
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| 33 | asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0)); |
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| 34 | |
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| 35 | return (eax & 6) == 6; |
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| 36 | } |
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| 37 | |
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| 38 | static int |
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| 39 | do_test (void) |
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| 40 | { |
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| 41 | /* Run AVX test only if AVX is supported. */ |
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| 42 | if (avx_enabled ()) |
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| 43 | return tst_avx_aux (); |
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| 44 | else |
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| 45 | return 77; |
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| 46 | } |
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| 47 | |
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| 48 | #define TEST_FUNCTION do_test () |
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| 49 | #include "../../test-skeleton.c" |
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| 50 | |
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