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
run(int n,...)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__) || defined(__sparc64__)
56 for (i = 0; i < 5; i++) {
57 #elif defined(__aarch64__) || defined(__riscv)
58 for (i = 0; i < 7; i++) {
59 #else
60 for (i = 0; i < 9; i++) {
61 #endif
62 #else
63 for (i = 0; i < 9; i++) {
64 #endif
65 ia = va_arg(va, int);
66 ATF_REQUIRE_EQ(i, ia);
67 }
68 va_end(va);
69
70 calls++;
71 }
72
73 ATF_TC(getcontext_err);
74 ATF_TC_HEAD(getcontext_err, tc)
75 {
76 atf_tc_set_md_var(tc, "descr", "Test errors from getcontext(2)");
77 }
78
79 ATF_TC_BODY(getcontext_err, tc)
80 {
81
82 errno = 0;
83 ATF_REQUIRE_ERRNO(EFAULT, getcontext((void *)-1) == -1);
84 }
85
86 ATF_TC(setcontext_err);
87 ATF_TC_HEAD(setcontext_err, tc)
88 {
89 atf_tc_set_md_var(tc, "descr", "Test errors from setcontext(2)");
90 }
91
92 ATF_TC_BODY(setcontext_err, tc)
93 {
94
95 errno = 0;
96 ATF_REQUIRE_ERRNO(EFAULT, setcontext((void *)-1) == -1);
97 }
98
99 ATF_TC(setcontext_link);
100 ATF_TC_HEAD(setcontext_link, tc)
101 {
102
103 atf_tc_set_md_var(tc, "descr",
104 "Checks get/make/setcontext(), context linking via uc_link(), "
105 "and argument passing to the new context");
106 }
107
108 ATF_TC_BODY(setcontext_link, tc)
109 {
110 ucontext_t uc[DEPTH];
111 ucontext_t save;
112 volatile int i = 0; /* avoid longjmp clobbering */
113
114 for (i = 0; i < DEPTH; ++i) {
115 ATF_REQUIRE_EQ(getcontext(&uc[i]), 0);
116
117 uc[i].uc_stack.ss_sp = malloc(STACKSZ);
118 uc[i].uc_stack.ss_size = STACKSZ;
119 uc[i].uc_link = (i > 0) ? &uc[i - 1] : &save;
120
121 #ifdef __FreeBSD__
122 #if defined(__amd64__) || defined(__sparc64__)
123 /*
124 * FreeBSD/amd64 and FreeBSD/sparc64 only permit up to
125 * 6 arguments.
126 */
127 makecontext(&uc[i], (void *)run, 6, i,
128 0, 1, 2, 3, 4);
129 #elif defined(__aarch64__) || defined(__riscv)
130 /*
131 * FreeBSD/arm64 and FreeBSD/riscv64 only permit up to
132 * 8 arguments.
133 */
134 makecontext(&uc[i], (void *)run, 8, i,
135 0, 1, 2, 3, 4, 5, 6);
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