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
|
/*
* Copyright(c) 2021-2023 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Test the VLIW semantics of two stores in a packet
*
* When a packet has 2 stores, either both commit or neither commit.
* We test this with a packet that does stores to both NULL and a global
* variable, "should_not_change". After the SIGSEGV is caught, we check
* that the "should_not_change" value is the same.
*/
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.h>
int err;
#include "hex_test.h"
bool segv_caught;
#define SHOULD_NOT_CHANGE_VAL 5
int32_t should_not_change = SHOULD_NOT_CHANGE_VAL;
#define BUF_SIZE 300
uint8_t buf[BUF_SIZE];
jmp_buf jmp_env;
static void sig_segv(int sig, siginfo_t *info, void *puc)
{
check32(sig, SIGSEGV);
segv_caught = true;
longjmp(jmp_env, 1);
}
int main()
{
struct sigaction act;
/* SIGSEGV test */
act.sa_sigaction = sig_segv;
sigemptyset(&act.sa_mask);
act.sa_flags = SA_SIGINFO;
chk_error(sigaction(SIGSEGV, &act, NULL));
if (setjmp(jmp_env) == 0) {
asm volatile("r18 = ##should_not_change\n\t"
"r19 = #0\n\t"
"{\n\t"
" memw(r18) = #7\n\t"
" memw(r19) = #0\n\t"
"}\n\t"
: : : "r18", "r19", "memory");
}
act.sa_handler = SIG_DFL;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
chk_error(sigaction(SIGSEGV, &act, NULL));
check32(segv_caught, true);
check32(should_not_change, SHOULD_NOT_CHANGE_VAL);
puts(err ? "FAIL" : "PASS");
return err ? EXIT_FAILURE : EXIT_SUCCESS;
}
|
