1 /* 2 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv (at) 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 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
