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 53 unconst16(uint16_t val) 54 { 55 return val + x16; 56 } 57 58 static uint32_t 59 unconst32(uint32_t val) 60 { 61 return val + x32; 62 } 63 64 static uint64_t 65 unconst64(uint64_t val) 66 { 67 return val + x64; 68 } 69 70 ATF_TC(bswap16_basic); 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 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); 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 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); 101 ATF_TC_HEAD(bswap32_basic, tc) 102 { 103 atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #1"); 104 } 105 106 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); 115 ATF_TC_HEAD(bswap32_unconst, tc) 116 { 117 atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #2"); 118 } 119 120 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); 131 ATF_TC_HEAD(bswap64_basic, tc) 132 { 133 atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #1"); 134 } 135 136 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); 145 ATF_TC_HEAD(bswap64_unconst, tc) 146 { 147 atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #2"); 148 } 149 150 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 } 166 167 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
Indexes created Sat Sep 20 22:09:52 GMT 2025