1 /* Test case for preserved AVX registers in dynamic linker.
2 Copyright (C) 2009-2022 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 <https://www.gnu.org/licenses/>. */
18
19 #include <cpuid.h>
20
21 int tst_audit4_aux (void);
22
23 static int
avx_enabled(void)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
do_test(void)39 do_test (void)
40 {
41 /* Run AVX test only if AVX is supported. */
42 if (avx_enabled ())
43 return tst_audit4_aux ();
44 else
45 return 77;
46 }
47
48 #define TEST_FUNCTION do_test ()
49 #include "../../test-skeleton.c"
50