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t_bswap.c
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Editing: t_bswap.c
/* $NetBSD: t_bswap.c,v 1.1 2011/05/05 05:39:11 jruoho Exp $ */ /*- * Copyright (c) 2011 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jukka Ruohonen. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __RCSID("$NetBSD: t_bswap.c,v 1.1 2011/05/05 05:39:11 jruoho Exp $"); #include <sys/types.h> #include <machine/bswap.h> #include <atf-c.h> static uint16_t x16; static uint32_t x32; static uint64_t x64; static uint16_t unconst16(uint16_t); static uint32_t unconst32(uint32_t); static uint64_t unconst64(uint64_t); /* * Given the use of __builtin_constant_p(3), * these functions try to avoid gcc(1) from * treating the arguments as constants. */ static uint16_t unconst16(uint16_t val) { return val + x16; } static uint32_t unconst32(uint32_t val) { return val + x32; } static uint64_t unconst64(uint64_t val) { return val + x64; } ATF_TC(bswap16_basic); ATF_TC_HEAD(bswap16_basic, tc) { atf_tc_set_md_var(tc, "descr", "A naive test of bswap16(3), #1"); } ATF_TC_BODY(bswap16_basic, tc) { ATF_REQUIRE_EQ(bswap16(0x0000), 0x0000); ATF_REQUIRE_EQ(bswap16(0xff00), 0x00ff); ATF_REQUIRE_EQ(bswap16(0xffff), 0xffff); ATF_REQUIRE_EQ(bswap16(0x1234), 0x3412); } ATF_TC(bswap16_unconst); ATF_TC_HEAD(bswap16_unconst, tc) { atf_tc_set_md_var(tc, "descr", "A naive test of bswap16(3), #2"); } ATF_TC_BODY(bswap16_unconst, tc) { x16 = 0; ATF_REQUIRE_EQ(bswap16(unconst16(0x0000)), 0x0000); ATF_REQUIRE_EQ(bswap16(unconst16(0xff00)), 0x00ff); ATF_REQUIRE_EQ(bswap16(unconst16(0xffff)), 0xffff); ATF_REQUIRE_EQ(bswap16(unconst16(0x1234)), 0x3412); } ATF_TC(bswap32_basic); ATF_TC_HEAD(bswap32_basic, tc) { atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #1"); } ATF_TC_BODY(bswap32_basic, tc) { ATF_REQUIRE_EQ(bswap32(0x00000000), 0x00000000); ATF_REQUIRE_EQ(bswap32(0xffff0000), 0x0000ffff); ATF_REQUIRE_EQ(bswap32(0xffffffff), 0xffffffff); ATF_REQUIRE_EQ(bswap32(0x12345678), 0x78563412); } ATF_TC(bswap32_unconst); ATF_TC_HEAD(bswap32_unconst, tc) { atf_tc_set_md_var(tc, "descr", "A naive test of bswap32(3), #2"); } ATF_TC_BODY(bswap32_unconst, tc) { x32 = 0; ATF_REQUIRE_EQ(bswap32(unconst32(0x00000000)), 0x00000000); ATF_REQUIRE_EQ(bswap32(unconst32(0xffff0000)), 0x0000ffff); ATF_REQUIRE_EQ(bswap32(unconst32(0xffffffff)), 0xffffffff); ATF_REQUIRE_EQ(bswap32(unconst32(0x12345678)), 0x78563412); } ATF_TC(bswap64_basic); ATF_TC_HEAD(bswap64_basic, tc) { atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #1"); } ATF_TC_BODY(bswap64_basic, tc) { ATF_REQUIRE_EQ(bswap64(0x0000000000000000), 0x0000000000000000); ATF_REQUIRE_EQ(bswap64(0xffffffff00000000), 0x00000000ffffffff); ATF_REQUIRE_EQ(bswap64(0xffffffffffffffff), 0xffffffffffffffff); ATF_REQUIRE_EQ(bswap64(0x123456789abcdeff), 0xffdebc9a78563412); } ATF_TC(bswap64_unconst); ATF_TC_HEAD(bswap64_unconst, tc) { atf_tc_set_md_var(tc, "descr", "A naive test of bswap64(3), #2"); } ATF_TC_BODY(bswap64_unconst, tc) { x64 = 0; ATF_REQUIRE_EQ(bswap64(unconst64(0x0000000000000000)), 0x0000000000000000); ATF_REQUIRE_EQ(bswap64(unconst64(0xffffffff00000000)), 0x00000000ffffffff); ATF_REQUIRE_EQ(bswap64(unconst64(0xffffffffffffffff)), 0xffffffffffffffff); ATF_REQUIRE_EQ(bswap64(unconst64(0x123456789abcdeff)), 0xffdebc9a78563412); } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, bswap16_basic); ATF_TP_ADD_TC(tp, bswap16_unconst); ATF_TP_ADD_TC(tp, bswap32_basic); ATF_TP_ADD_TC(tp, bswap32_unconst); ATF_TP_ADD_TC(tp, bswap64_basic); ATF_TP_ADD_TC(tp, bswap64_unconst); return atf_no_error(); }
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