1 /*
2  * Copyright 2016, Cyril Bur, IBM Corp.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version
7  * 2 of the License, or (at your option) any later version.
8  *
9  * Syscalls can be performed provided the transactions are suspended.
10  * The exec() class of syscall is unique as a new process is loaded.
11  *
12  * It makes little sense for after an exec() call for the previously
13  * suspended transaction to still exist.
14  */
15 
16 #define _GNU_SOURCE
17 #include <errno.h>
18 #include <inttypes.h>
19 #include <libgen.h>
20 #include <pthread.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <unistd.h>
25 
26 #include "utils.h"
27 #include "tm.h"
28 
29 static char *path;
30 
31 static int test_exec(void)
32 {
33 	SKIP_IF(!have_htm());
34 
35 	asm __volatile__(
36 		"tbegin.;"
37 		"blt    1f; "
38 		"tsuspend.;"
39 		"1: ;"
40 		: : : "memory");
41 
42 	execl(path, "tm-exec", "--child", NULL);
43 
44 	/* Shouldn't get here */
45 	perror("execl() failed");
46 	return 1;
47 }
48 
49 static int after_exec(void)
50 {
51 	asm __volatile__(
52 		"tbegin.;"
53 		"blt    1f;"
54 		"tsuspend.;"
55 		"1: ;"
56 		: : : "memory");
57 
58 	FAIL_IF(failure_is_nesting());
59 	return 0;
60 }
61 
62 int main(int argc, char *argv[])
63 {
64 	path = argv[0];
65 
66 	if (argc > 1 && strcmp(argv[1], "--child") == 0)
67 		return after_exec();
68 
69 	return test_harness(test_exec, "tm_exec");
70 }
71