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3403a17f | 1 | /* Test case for preserved AVX512 registers in dynamic linker. |
04277e02 | 2 | Copyright (C) 2017-2019 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 | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <cpuid.h> | |
20 | ||
21 | int tst_avx512_aux (void); | |
22 | ||
23 | static int | |
24 | avx512_enabled (void) | |
25 | { | |
26 | #ifdef bit_AVX512F | |
27 | unsigned int eax, ebx, ecx, edx; | |
28 | ||
29 | if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0 | |
30 | || (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE)) | |
31 | return 0; | |
32 | ||
33 | __cpuid_count (7, 0, eax, ebx, ecx, edx); | |
34 | if (!(ebx & bit_AVX512F)) | |
35 | return 0; | |
36 | ||
37 | asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0)); | |
38 | ||
39 | /* Verify that ZMM, YMM and XMM states are enabled. */ | |
40 | return (eax & 0xe6) == 0xe6; | |
41 | #else | |
42 | return 0; | |
43 | #endif | |
44 | } | |
45 | ||
46 | static int | |
47 | do_test (void) | |
48 | { | |
49 | /* Run AVX512 test only if AVX512 is supported. */ | |
50 | if (avx512_enabled ()) | |
51 | return tst_avx512_aux (); | |
52 | else | |
53 | return 77; | |
54 | } | |
55 | ||
56 | #define TEST_FUNCTION do_test () | |
57 | #include "../../test-skeleton.c" |