summaryrefslogtreecommitdiffstats
path: root/tools/perf/tests/genelf.c
blob: 3c5ced5d958819d4c27dc2fd30b420ef827e17a5 (plain)
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
// SPDX-License-Identifier: GPL-2.0-only
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/compiler.h>

#include "debug.h"
#include "tests.h"

#ifdef HAVE_JITDUMP
#include <libelf.h>
#include "../util/genelf.h"
#endif

#define TEMPL "/tmp/perf-test-XXXXXX"

static int test__jit_write_elf(struct test *test __maybe_unused,
			       int subtest __maybe_unused)
{
#ifdef HAVE_JITDUMP
	static unsigned char x86_code[] = {
		0xBB, 0x2A, 0x00, 0x00, 0x00, /* movl $42, %ebx */
		0xB8, 0x01, 0x00, 0x00, 0x00, /* movl $1, %eax */
		0xCD, 0x80            /* int $0x80 */
	};
	char path[PATH_MAX];
	int fd, ret;

	strcpy(path, TEMPL);

	fd = mkstemp(path);
	if (fd < 0) {
		perror("mkstemp failed");
		return TEST_FAIL;
	}

	pr_info("Writing jit code to: %s\n", path);

	ret = jit_write_elf(fd, 0, "main", x86_code, sizeof(x86_code),
			NULL, 0, NULL, 0, 0);
	close(fd);

	unlink(path);

	return ret ? TEST_FAIL : 0;
#else
	return TEST_SKIP;
#endif
}

DEFINE_SUITE("Test jit_write_elf", jit_write_elf);