1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/* Test case for preserved AVX512 registers in dynamic linker.
Copyright (C) 2017-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <cpuid.h>
int tst_avx512_aux (void);
static int
avx512_enabled (void)
{
#ifdef bit_AVX512F
unsigned int eax, ebx, ecx, edx;
if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0
|| (ecx & (bit_AVX | bit_OSXSAVE)) != (bit_AVX | bit_OSXSAVE))
return 0;
__cpuid_count (7, 0, eax, ebx, ecx, edx);
if (!(ebx & bit_AVX512F))
return 0;
asm ("xgetbv" : "=a" (eax), "=d" (edx) : "c" (0));
/* Verify that ZMM, YMM and XMM states are enabled. */
return (eax & 0xe6) == 0xe6;
#else
return 0;
#endif
}
static int
do_test (void)
{
/* Run AVX512 test only if AVX512 is supported. */
if (avx512_enabled ())
return tst_avx512_aux ();
else
return 77;
}
#define TEST_FUNCTION do_test ()
#include "../../test-skeleton.c"
|
