1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 2016, Cyril Bur, IBM Corp.
4 *
5 * Syscalls can be performed provided the transactions are suspended.
6 * The exec() class of syscall is unique as a new process is loaded.
7 *
8 * It makes little sense for after an exec() call for the previously
9 * suspended transaction to still exist.
10 */
11
12#define _GNU_SOURCE
13#include <errno.h>
14#include <inttypes.h>
15#include <libgen.h>
16#include <pthread.h>
17#include <stdio.h>
18#include <stdlib.h>
19#include <string.h>
20#include <unistd.h>
21
22#include "utils.h"
23#include "tm.h"
24
25static char *path;
26
27static int test_exec(void)
28{
29 SKIP_IF(!have_htm());
30 SKIP_IF(htm_is_synthetic());
31
32 asm __volatile__(
33 "tbegin.;"
34 "blt 1f; "
35 "tsuspend.;"
36 "1: ;"
37 : : : "memory");
38
39 execl(path, "tm-exec", "--child", NULL);
40
41 /* Shouldn't get here */
42 perror("execl() failed");
43 return 1;
44}
45
46static int after_exec(void)
47{
48 asm __volatile__(
49 "tbegin.;"
50 "blt 1f;"
51 "tsuspend.;"
52 "1: ;"
53 : : : "memory");
54
55 FAIL_IF(failure_is_nesting());
56 return 0;
57}
58
59int main(int argc, char *argv[])
60{
61 path = argv[0];
62
63 if (argc > 1 && strcmp(argv[1], "--child") == 0)
64 return after_exec();
65
66 return test_harness(test_exec, "tm_exec");
67}
68

source code of linux/tools/testing/selftests/powerpc/tm/tm-exec.c