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
|
/*
* Check decoding of prctl PR_RISCV_V_SET_CONTROL and PR_RISCV_V_GET_CONTROL
* operations.
*
* Copyright (c) 2024 Eugene Syromyatnikov <evgsyr@gmail.com>
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/prctl.h>
int
main(void)
{
static const struct strval_klong ctx_args[] = {
{ 0, "PR_RISCV_CTX_SW_FENCEI_ON" },
{ 1, "PR_RISCV_CTX_SW_FENCEI_OFF" },
{ 2, NULL },
{ 3, NULL },
{ 23, NULL },
{ 0xdeadbeef, NULL },
{ (kernel_ulong_t) -1ULL, NULL },
};
static const struct strval_klong scope_args[] = {
{ 0, "PR_RISCV_SCOPE_PER_PROCESS" },
{ 1, "PR_RISCV_SCOPE_PER_THREAD" },
{ 2, NULL },
{ 3, NULL },
{ 42, NULL },
{ 0xcafefeed, NULL },
{ (kernel_ulong_t) -2ULL, NULL },
};
prctl_marker();
for (size_t i = 0; i < ARRAY_SIZE(ctx_args); i++) {
for (size_t j = 0; j < ARRAY_SIZE(scope_args); j++) {
long rc = syscall(__NR_prctl,
PR_RISCV_SET_ICACHE_FLUSH_CTX,
ctx_args[i].val, scope_args[j].val,
0xbadc0de, 0xbadc0ded);
const char *errstr = sprintrc(rc);
printf("prctl("
XLAT_KNOWN(0x47, "PR_RISCV_SET_ICACHE_FLUSH_CTX"));
printf(", %s, ", sprintxlat(ctx_args[i].str,
ctx_args[i].val,
"PR_RISCV_CTX_???"));
printf("%s) = ", sprintxlat(scope_args[j].str,
scope_args[j].val,
"PR_RISCV_SCOPE_???"));
puts(errstr);
}
}
puts("+++ exited with 0 +++");
return 0;
}
|
