xref: /freebsd/lib/libc/tests/gen/makecontext_test.c (revision 4c9a0adad18263ec8725d9bfc5f560c6ad1da8bd)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2018 John H. Baldwin <jhb@FreeBSD.org>
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  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 #include <atf-c.h>
29 #include <ucontext.h>
30 
31 static char uc_stack[16 * 1024];
32 
33 static void
34 check_1(int arg1)
35 {
36 
37 	ATF_REQUIRE_EQ(arg1, 1);
38 }
39 
40 ATF_TC_WITHOUT_HEAD(makecontext_arg1);
41 ATF_TC_BODY(makecontext_arg1, tc)
42 {
43 	ucontext_t ctx[2];
44 
45 	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
46 	ctx[1].uc_stack.ss_sp = uc_stack;
47 	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
48 	ctx[1].uc_link = &ctx[0];
49 	makecontext(&ctx[1], (void (*)(void))check_1, 1, 1);
50 
51 	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
52 }
53 
54 static void
55 check_2(int arg1, int arg2)
56 {
57 
58 	ATF_REQUIRE_EQ(arg1, 1);
59 	ATF_REQUIRE_EQ(arg2, 2);
60 }
61 
62 ATF_TC_WITHOUT_HEAD(makecontext_arg2);
63 ATF_TC_BODY(makecontext_arg2, tc)
64 {
65 	ucontext_t ctx[2];
66 
67 	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
68 	ctx[1].uc_stack.ss_sp = uc_stack;
69 	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
70 	ctx[1].uc_link = &ctx[0];
71 	makecontext(&ctx[1], (void (*)(void))check_2, 2, 1, 2);
72 
73 	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
74 }
75 
76 static void
77 check_3(int arg1, int arg2, int arg3)
78 {
79 
80 	ATF_REQUIRE_EQ(arg1, 1);
81 	ATF_REQUIRE_EQ(arg2, 2);
82 	ATF_REQUIRE_EQ(arg3, 3);
83 }
84 
85 ATF_TC_WITHOUT_HEAD(makecontext_arg3);
86 ATF_TC_BODY(makecontext_arg3, tc)
87 {
88 	ucontext_t ctx[2];
89 
90 	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
91 	ctx[1].uc_stack.ss_sp = uc_stack;
92 	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
93 	ctx[1].uc_link = &ctx[0];
94 	makecontext(&ctx[1], (void (*)(void))check_3, 3, 1, 2, 3);
95 
96 	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
97 }
98 
99 static void
100 check_4(int arg1, int arg2, int arg3, int arg4)
101 {
102 
103 	ATF_REQUIRE_EQ(arg1, 1);
104 	ATF_REQUIRE_EQ(arg2, 2);
105 	ATF_REQUIRE_EQ(arg3, 3);
106 	ATF_REQUIRE_EQ(arg4, 4);
107 }
108 
109 ATF_TC_WITHOUT_HEAD(makecontext_arg4);
110 ATF_TC_BODY(makecontext_arg4, tc)
111 {
112 	ucontext_t ctx[2];
113 
114 	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
115 	ctx[1].uc_stack.ss_sp = uc_stack;
116 	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
117 	ctx[1].uc_link = &ctx[0];
118 	makecontext(&ctx[1], (void (*)(void))check_4, 4, 1, 2, 3, 4);
119 
120 	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
121 }
122 
123 static void
124 check_5(int arg1, int arg2, int arg3, int arg4, int arg5)
125 {
126 
127 	ATF_REQUIRE_EQ(arg1, 1);
128 	ATF_REQUIRE_EQ(arg2, 2);
129 	ATF_REQUIRE_EQ(arg3, 3);
130 	ATF_REQUIRE_EQ(arg4, 4);
131 	ATF_REQUIRE_EQ(arg5, 5);
132 }
133 
134 ATF_TC_WITHOUT_HEAD(makecontext_arg5);
135 ATF_TC_BODY(makecontext_arg5, tc)
136 {
137 	ucontext_t ctx[2];
138 
139 	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
140 	ctx[1].uc_stack.ss_sp = uc_stack;
141 	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
142 	ctx[1].uc_link = &ctx[0];
143 	makecontext(&ctx[1], (void (*)(void))check_5, 5, 1, 2, 3, 4, 5);
144 
145 	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
146 }
147 
148 static void
149 check_6(int arg1, int arg2, int arg3, int arg4, int arg5, int arg6)
150 {
151 
152 	ATF_REQUIRE_EQ(arg1, 1);
153 	ATF_REQUIRE_EQ(arg2, 2);
154 	ATF_REQUIRE_EQ(arg3, 3);
155 	ATF_REQUIRE_EQ(arg4, 4);
156 	ATF_REQUIRE_EQ(arg5, 5);
157 	ATF_REQUIRE_EQ(arg6, 6);
158 }
159 
160 ATF_TC_WITHOUT_HEAD(makecontext_arg6);
161 ATF_TC_BODY(makecontext_arg6, tc)
162 {
163 	ucontext_t ctx[2];
164 
165 	ATF_REQUIRE_EQ(getcontext(&ctx[1]), 0);
166 	ctx[1].uc_stack.ss_sp = uc_stack;
167 	ctx[1].uc_stack.ss_size = sizeof(uc_stack);
168 	ctx[1].uc_link = &ctx[0];
169 	makecontext(&ctx[1], (void (*)(void))check_6, 6, 1, 2, 3, 4, 5, 6);
170 
171 	ATF_REQUIRE_EQ(swapcontext(&ctx[0], &ctx[1]), 0);
172 }
173 
174 ATF_TP_ADD_TCS(tp)
175 {
176 
177 	ATF_TP_ADD_TC(tp, makecontext_arg1);
178 	ATF_TP_ADD_TC(tp, makecontext_arg2);
179 	ATF_TP_ADD_TC(tp, makecontext_arg3);
180 	ATF_TP_ADD_TC(tp, makecontext_arg4);
181 	ATF_TP_ADD_TC(tp, makecontext_arg5);
182 	ATF_TP_ADD_TC(tp, makecontext_arg6);
183 
184 	return (atf_no_error());
185 }
186