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1/* Test case for preserved AVX registers in dynamic linker.
2 Copyright (C) 2017-2019 Free Software Foundation, Inc.
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
21int tst_avx_aux (void);
22
23static int
24avx_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
38static int
39do_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"
50

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