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
39static uint16_t x16;
40static uint32_t x32;
41static uint64_t x64;
42
43static uint16_t	unconst16(uint16_t);
44static uint32_t	unconst32(uint32_t);
45static 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 */
52static uint16_t
53unconst16(uint16_t val)
54{
55	return val + x16;
56}
57
58static uint32_t
59unconst32(uint32_t val)
60{
61	return val + x32;
62}
63
64static uint64_t
65unconst64(uint64_t val)
66{
67	return val + x64;
68}
69
70ATF_TC(bswap16_basic);
71ATF_TC_HEAD(bswap16_basic, tc)
72{
73	atf_tc_set_md_var(tc, "descr", "A naive test of bswap16(3), #1");
74}
75
76ATF_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
84ATF_TC(bswap16_unconst);
85ATF_TC_HEAD(bswap16_unconst, tc)
86{
87	atf_tc_set_md_var(tc, "descr", "A naive test of bswap16(3), #2");
88}
89
90ATF_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
100ATF_TC(bswap32_basic);
101ATF_TC_HEAD(bswap32_basic, tc)
102{
103	atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #1");
104}
105
106ATF_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
114ATF_TC(bswap32_unconst);
115ATF_TC_HEAD(bswap32_unconst, tc)
116{
117	atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #2");
118}
119
120ATF_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
130ATF_TC(bswap64_basic);
131ATF_TC_HEAD(bswap64_basic, tc)
132{
133	atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #1");
134}
135
136ATF_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
144ATF_TC(bswap64_unconst);
145ATF_TC_HEAD(bswap64_unconst, tc)
146{
147	atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #2");
148}
149
150ATF_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
167ATF_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