1 /* $NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __COPYRIGHT("@(#) Copyright (c) 2008\ 31 The NetBSD Foundation, inc. All rights reserved."); 32 __RCSID("$NetBSD: t_getcontext.c,v 1.3 2011/07/14 04:59:14 jruoho Exp $"); 33 34 #include <atf-c.h> 35 #include <errno.h> 36 #include <stdarg.h> 37 #include <stdlib.h> 38 #include <ucontext.h> 39 40 #define STACKSZ (10*1024) 41 #define DEPTH 3 42 43 static int calls; 44 45 static void 46 run(int n, ...) 47 { 48 va_list va; 49 int i, ia; 50 51 ATF_REQUIRE_EQ(n, DEPTH - calls - 1); 52 53 va_start(va, n); 54 #ifdef __FreeBSD__ 55 #if defined(__amd64__) 56 for (i = 0; i < 5; i++) { 57 #elif defined(__aarch64__) 58 for (i = 0; i < 7; i++) { 59 #elif defined(__mips__) 60 for (i = 0; i < 5; i++) { 61 #else 62 for (i = 0; i < 9; i++) { 63 #endif 64 #else 65 for (i = 0; i < 9; i++) { 66 #endif 67 ia = va_arg(va, int); 68 ATF_REQUIRE_EQ(i, ia); 69 } 70 va_end(va); 71 72 calls++; 73 } 74 75 ATF_TC(getcontext_err); 76 ATF_TC_HEAD(getcontext_err, tc) 77 { 78 atf_tc_set_md_var(tc, "descr", "Test errors from getcontext(2)"); 79 } 80 81 ATF_TC_BODY(getcontext_err, tc) 82 { 83 84 errno = 0; 85 ATF_REQUIRE_ERRNO(EFAULT, getcontext((void *)-1) == -1); 86 } 87 88 ATF_TC(setcontext_err); 89 ATF_TC_HEAD(setcontext_err, tc) 90 { 91 atf_tc_set_md_var(tc, "descr", "Test errors from setcontext(2)"); 92 } 93 94 ATF_TC_BODY(setcontext_err, tc) 95 { 96 97 errno = 0; 98 ATF_REQUIRE_ERRNO(EFAULT, setcontext((void *)-1) == -1); 99 } 100 101 ATF_TC(setcontext_link); 102 ATF_TC_HEAD(setcontext_link, tc) 103 { 104 105 atf_tc_set_md_var(tc, "descr", 106 "Checks get/make/setcontext(), context linking via uc_link(), " 107 "and argument passing to the new context"); 108 } 109 110 ATF_TC_BODY(setcontext_link, tc) 111 { 112 ucontext_t uc[DEPTH]; 113 ucontext_t save; 114 volatile int i = 0; /* avoid longjmp clobbering */ 115 116 for (i = 0; i < DEPTH; ++i) { 117 ATF_REQUIRE_EQ(getcontext(&uc[i]), 0); 118 119 uc[i].uc_stack.ss_sp = malloc(STACKSZ); 120 uc[i].uc_stack.ss_size = STACKSZ; 121 uc[i].uc_link = (i > 0) ? &uc[i - 1] : &save; 122 123 #ifdef __FreeBSD__ 124 #if defined(__amd64__) 125 /* FreeBSD/amd64 only permits up to 6 arguments. */ 126 makecontext(&uc[i], (void *)run, 6, i, 127 0, 1, 2, 3, 4); 128 #elif defined(__aarch64__) 129 /* FreeBSD/arm64 only permits up to 8 arguments. */ 130 makecontext(&uc[i], (void *)run, 8, i, 131 0, 1, 2, 3, 4, 5, 6); 132 #elif defined(__mips__) 133 /* FreeBSD/mips only permits up to 6 arguments. */ 134 makecontext(&uc[i], (void *)run, 6, i, 135 0, 1, 2, 3, 4); 136 #else 137 makecontext(&uc[i], (void *)run, 10, i, 138 0, 1, 2, 3, 4, 5, 6, 7, 8); 139 #endif 140 #else 141 makecontext(&uc[i], (void *)run, 10, i, 142 0, 1, 2, 3, 4, 5, 6, 7, 8); 143 #endif 144 } 145 146 ATF_REQUIRE_EQ(getcontext(&save), 0); 147 148 if (calls == 0) 149 ATF_REQUIRE_EQ(setcontext(&uc[DEPTH-1]), 0); 150 } 151 152 ATF_TP_ADD_TCS(tp) 153 { 154 155 ATF_TP_ADD_TC(tp, getcontext_err); 156 ATF_TP_ADD_TC(tp, setcontext_err); 157 ATF_TP_ADD_TC(tp, setcontext_link); 158 159 return atf_no_error(); 160 } 161