1 /* $NetBSD: t_bswap.c,v 1.1 2011/05/05 05:39:11 jruoho Exp $ */
2
3 /*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_bswap.c,v 1.1 2011/05/05 05:39:11 jruoho Exp $");
33
34 #include <sys/types.h>
35 #include <machine/bswap.h>
36
37 #include <atf-c.h>
38
39 static uint16_t x16;
40 static uint32_t x32;
41 static uint64_t x64;
42
43 static uint16_t unconst16(uint16_t);
44 static uint32_t unconst32(uint32_t);
45 static uint64_t unconst64(uint64_t);
46
47 /*
48 * Given the use of __builtin_constant_p(3),
49 * these functions try to avoid gcc(1) from
50 * treating the arguments as constants.
51 */
52 static uint16_t
unconst16(uint16_t val)53 unconst16(uint16_t val)
54 {
55 return val + x16;
56 }
57
58 static uint32_t
unconst32(uint32_t val)59 unconst32(uint32_t val)
60 {
61 return val + x32;
62 }
63
64 static uint64_t
unconst64(uint64_t val)65 unconst64(uint64_t val)
66 {
67 return val + x64;
68 }
69
70 ATF_TC(bswap16_basic);
ATF_TC_HEAD(bswap16_basic,tc)71 ATF_TC_HEAD(bswap16_basic, tc)
72 {
73 atf_tc_set_md_var(tc, "descr", "A naive test of bswap16(3), #1");
74 }
75
ATF_TC_BODY(bswap16_basic,tc)76 ATF_TC_BODY(bswap16_basic, tc)
77 {
78 ATF_REQUIRE_EQ(bswap16(0x0000), 0x0000);
79 ATF_REQUIRE_EQ(bswap16(0xff00), 0x00ff);
80 ATF_REQUIRE_EQ(bswap16(0xffff), 0xffff);
81 ATF_REQUIRE_EQ(bswap16(0x1234), 0x3412);
82 }
83
84 ATF_TC(bswap16_unconst);
ATF_TC_HEAD(bswap16_unconst,tc)85 ATF_TC_HEAD(bswap16_unconst, tc)
86 {
87 atf_tc_set_md_var(tc, "descr", "A naive test of bswap16(3), #2");
88 }
89
ATF_TC_BODY(bswap16_unconst,tc)90 ATF_TC_BODY(bswap16_unconst, tc)
91 {
92 x16 = 0;
93
94 ATF_REQUIRE_EQ(bswap16(unconst16(0x0000)), 0x0000);
95 ATF_REQUIRE_EQ(bswap16(unconst16(0xff00)), 0x00ff);
96 ATF_REQUIRE_EQ(bswap16(unconst16(0xffff)), 0xffff);
97 ATF_REQUIRE_EQ(bswap16(unconst16(0x1234)), 0x3412);
98 }
99
100 ATF_TC(bswap32_basic);
ATF_TC_HEAD(bswap32_basic,tc)101 ATF_TC_HEAD(bswap32_basic, tc)
102 {
103 atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #1");
104 }
105
ATF_TC_BODY(bswap32_basic,tc)106 ATF_TC_BODY(bswap32_basic, tc)
107 {
108 ATF_REQUIRE_EQ(bswap32(0x00000000), 0x00000000);
109 ATF_REQUIRE_EQ(bswap32(0xffff0000), 0x0000ffff);
110 ATF_REQUIRE_EQ(bswap32(0xffffffff), 0xffffffff);
111 ATF_REQUIRE_EQ(bswap32(0x12345678), 0x78563412);
112 }
113
114 ATF_TC(bswap32_unconst);
ATF_TC_HEAD(bswap32_unconst,tc)115 ATF_TC_HEAD(bswap32_unconst, tc)
116 {
117 atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #2");
118 }
119
ATF_TC_BODY(bswap32_unconst,tc)120 ATF_TC_BODY(bswap32_unconst, tc)
121 {
122 x32 = 0;
123
124 ATF_REQUIRE_EQ(bswap32(unconst32(0x00000000)), 0x00000000);
125 ATF_REQUIRE_EQ(bswap32(unconst32(0xffff0000)), 0x0000ffff);
126 ATF_REQUIRE_EQ(bswap32(unconst32(0xffffffff)), 0xffffffff);
127 ATF_REQUIRE_EQ(bswap32(unconst32(0x12345678)), 0x78563412);
128 }
129
130 ATF_TC(bswap64_basic);
ATF_TC_HEAD(bswap64_basic,tc)131 ATF_TC_HEAD(bswap64_basic, tc)
132 {
133 atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #1");
134 }
135
ATF_TC_BODY(bswap64_basic,tc)136 ATF_TC_BODY(bswap64_basic, tc)
137 {
138 ATF_REQUIRE_EQ(bswap64(0x0000000000000000), 0x0000000000000000);
139 ATF_REQUIRE_EQ(bswap64(0xffffffff00000000), 0x00000000ffffffff);
140 ATF_REQUIRE_EQ(bswap64(0xffffffffffffffff), 0xffffffffffffffff);
141 ATF_REQUIRE_EQ(bswap64(0x123456789abcdeff), 0xffdebc9a78563412);
142 }
143
144 ATF_TC(bswap64_unconst);
ATF_TC_HEAD(bswap64_unconst,tc)145 ATF_TC_HEAD(bswap64_unconst, tc)
146 {
147 atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #2");
148 }
149
ATF_TC_BODY(bswap64_unconst,tc)150 ATF_TC_BODY(bswap64_unconst, tc)
151 {
152 x64 = 0;
153
154 ATF_REQUIRE_EQ(bswap64(unconst64(0x0000000000000000)),
155 0x0000000000000000);
156
157 ATF_REQUIRE_EQ(bswap64(unconst64(0xffffffff00000000)),
158 0x00000000ffffffff);
159
160 ATF_REQUIRE_EQ(bswap64(unconst64(0xffffffffffffffff)),
161 0xffffffffffffffff);
162
163 ATF_REQUIRE_EQ(bswap64(unconst64(0x123456789abcdeff)),
164 0xffdebc9a78563412);
165 }
166
ATF_TP_ADD_TCS(tp)167 ATF_TP_ADD_TCS(tp)
168 {
169
170 ATF_TP_ADD_TC(tp, bswap16_basic);
171 ATF_TP_ADD_TC(tp, bswap16_unconst);
172 ATF_TP_ADD_TC(tp, bswap32_basic);
173 ATF_TP_ADD_TC(tp, bswap32_unconst);
174 ATF_TP_ADD_TC(tp, bswap64_basic);
175 ATF_TP_ADD_TC(tp, bswap64_unconst);
176
177 return atf_no_error();
178 }
179