1 /*
2 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2015-2018 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "tests.h"
30 #include <asm/unistd.h>
31 #include "scno.h"
32
33 #ifdef __NR_membarrier
34
35 # include <assert.h>
36 # include <errno.h>
37 # include <stdio.h>
38 # include <unistd.h>
39
40 int
main(void)41 main(void)
42 {
43 assert(syscall(__NR_membarrier, 3, 255) == -1);
44 int saved_errno = errno;
45 printf("membarrier(0x3 /* MEMBARRIER_CMD_??? */, 255) = %s\n",
46 sprintrc(-1));
47 if (saved_errno != ENOSYS) {
48 const char *text_global;
49 const char *text;
50 int rc = syscall(__NR_membarrier, 0, 0);
51
52 assert(rc >= 0);
53
54 text_global = rc & 1 ? "MEMBARRIER_CMD_GLOBAL" : "";
55
56 switch (rc & ~1) {
57 case 0:
58 text = "";
59 break;
60 case 8:
61 text = "MEMBARRIER_CMD_PRIVATE_EXPEDITED";
62 break;
63 case 8|16:
64 text = "MEMBARRIER_CMD_PRIVATE_EXPEDITED|"
65 "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED";
66 break;
67
68 case 2|4|8|16:
69 text = "MEMBARRIER_CMD_GLOBAL_EXPEDITED|"
70 "MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED|"
71 "MEMBARRIER_CMD_PRIVATE_EXPEDITED|"
72 "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED";
73 break;
74
75 case 2|4|8|16|32|64:
76 text = "MEMBARRIER_CMD_GLOBAL_EXPEDITED|"
77 "MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED|"
78 "MEMBARRIER_CMD_PRIVATE_EXPEDITED|"
79 "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED|"
80 "MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE|"
81 "MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE";
82 break;
83
84 default:
85 error_msg_and_fail("membarrier returned %#x, does"
86 " the test have to be updated?", rc);
87 }
88 printf("membarrier(MEMBARRIER_CMD_QUERY, 0) = %#x (%s%s%s)\n",
89 rc, text_global, text[0] && text_global[0] ? "|" : "",
90 text);
91 }
92 puts("+++ exited with 0 +++");
93 return 0;
94 }
95
96 #else
97
98 SKIP_MAIN_UNDEFINED("__NR_membarrier")
99
100 #endif
101