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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/* Template for SME tests.
Copyright (C) 2025 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 <stdio.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <sys/auxv.h>
#include <support/check.h>
#include <support/support.h>
#include <support/xstdlib.h>
#include <support/xunistd.h>
#include <support/test-driver.h>
#include "tst-sme-helper.h"
/* Streaming SVE vector register size. */
static unsigned long svl;
static uint8_t *state;
static void
enable_sme_za_state (struct blk *blk)
{
start_za ();
set_tpidr2 (blk);
load_za (blk, svl);
}
/* Check if SME state is disabled (when CLEAR is true) or
enabled (when CLEAR is false). */
static void
check_sme_za_state (const char msg[], bool clear)
{
unsigned long svcr = get_svcr ();
void *tpidr2 = get_tpidr2 ();
printf ("[%s]\n", msg);
printf ("svcr = %016lx\n", svcr);
printf ("tpidr2 = %016lx\n", (unsigned long)tpidr2);
if (clear)
{
TEST_VERIFY (svcr == 0);
TEST_VERIFY (tpidr2 == NULL);
}
else
{
TEST_VERIFY (svcr != 0);
TEST_VERIFY (tpidr2 != NULL);
}
}
/* Should be defined in actual test that includes this
skeleton file. */
static void
run (struct blk *ptr);
static int
do_test (void)
{
unsigned long hwcap2 = getauxval (AT_HWCAP2);
if ((hwcap2 & HWCAP2_SME) == 0)
return EXIT_UNSUPPORTED;
/* Get current streaming SVE vector length in bytes. */
svl = get_svl ();
printf ("svl: %lu\n", svl);
TEST_VERIFY_EXIT (!(svl < 16 || svl % 16 != 0 || svl >= (1 << 16)));
/* Initialise buffer for ZA state of SME. */
state = xmalloc (svl * svl);
memset (state, 1, svl * svl);
struct blk blk = {
.za_save_buffer = state,
.num_za_save_slices = svl,
.__reserved = {0},
};
run (&blk);
free (state);
return 0;
}
#include <support/test-driver.c>
|
