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3403a17f | 1 | /* Test case for preserved AVX registers in dynamic linker. |
2b778ceb | 2 | Copyright (C) 2017-2021 Free Software Foundation, Inc. |
3403a17f L |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
3403a17f L |
18 | |
19 | #include <cpuid.h> | |
20 | ||
21 | int tst_avx_aux (void); | |
22 | ||
23 | static int | |
24 | avx_enabled (void) | |
25 | { | |
26 | unsigned int eax, ebx, ecx, edx; | |
27 | ||
28 | if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0 | |
29 | || (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE)) | |
30 | return 0; | |
31 | ||
32 | /* Check the OS has AVX and SSE saving enabled. */ | |
33 | asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0)); | |
34 | ||
35 | return (eax & 6) == 6; | |
36 | } | |
37 | ||
38 | static int | |
39 | do_test (void) | |
40 | { | |
41 | /* Run AVX test only if AVX is supported. */ | |
42 | if (avx_enabled ()) | |
43 | return tst_avx_aux (); | |
44 | else | |
45 | return 77; | |
46 | } | |
47 | ||
48 | #define TEST_FUNCTION do_test () | |
49 | #include "../../test-skeleton.c" |