1 /* 2 * Copyright (c) 2017 Conrad Meyer <cem@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 31 #include <stdint.h> 32 33 #include <atf-c.h> 34 35 extern uint32_t sse42_crc32c(uint32_t, const unsigned char *, unsigned); 36 37 ATF_TC_WITHOUT_HEAD(crc32c_basic_correctness); 38 ATF_TC_BODY(crc32c_basic_correctness, tc) 39 { 40 const uint64_t inputs[] = { 41 0xf408c634b3a9142, 42 0x80539e8c7c352e2b, 43 0x62e9121db6e4d649, 44 0x899345850ed0a286, 45 0x2302df11b4a43b15, 46 0xe943de7b3d35d70, 47 0xdf1ff2bf41abf56b, 48 0x9bc138abae315de2, 49 0x31cc82e56234f0ff, 50 0xce63c0cd6988e847, 51 0x3e42f6b78ee352fa, 52 0xfa4085436078cfa6, 53 0x53349558bf670a4b, 54 0x2714e10e7d722c61, 55 0xc0d3261addfc6908, 56 0xd1567c3181d3a1bf, 57 }; 58 const uint32_t results[] = { 59 0x2ce33ede, 60 0xc49cc573, 61 0xb8683c96, 62 0x6918660d, 63 0xa904e522, 64 0x52dbc42c, 65 0x98863c22, 66 0x894d5d2c, 67 0xb003745d, 68 0xfc496dbd, 69 0x97d2fbb5, 70 0x3c062ef1, 71 0xcc2eff18, 72 0x6a9b09f6, 73 0x420242c1, 74 0xfd562dc3, 75 }; 76 size_t i; 77 uint32_t act; 78 79 ATF_REQUIRE(nitems(inputs) == nitems(results)); 80 81 for (i = 0; i < nitems(inputs); i++) { 82 act = sse42_crc32c(~0, (const void *)&inputs[i], 83 sizeof(inputs[0])); 84 ATF_REQUIRE_MSG(act == results[i], 85 "crc32c(0x%jx) = 0x%08x, got 0x%08x", (uintmax_t)inputs[i], 86 results[i], act); 87 } 88 } 89 90 ATF_TC_WITHOUT_HEAD(crc32c_alignment); 91 ATF_TC_BODY(crc32c_alignment, tc) 92 { 93 const uint64_t input = 0xf408c634b3a9142; 94 const uint32_t result = 0x2ce33ede; 95 unsigned char buf[15]; 96 size_t i; 97 uint32_t act; 98 99 100 for (i = 1; i < 8; i++) { 101 memcpy(&buf[i], &input, sizeof(input)); 102 103 act = sse42_crc32c(~0, (const void *)&buf[i], sizeof(input)); 104 ATF_REQUIRE_MSG(act == result, 105 "crc32c(0x%jx) = 0x%08x, got 0x%08x", (uintmax_t)input, 106 result, act); 107 } 108 } 109 110 ATF_TC_WITHOUT_HEAD(crc32c_trailing_bytes); 111 ATF_TC_BODY(crc32c_trailing_bytes, tc) 112 { 113 const unsigned char input[] = { 114 0x87, 0x54, 0x74, 0xd2, 0xb, 0x9b, 0xdd, 0xf6, 0x68, 0x37, 115 0xd4, 0x4, 0x5e, 0xa9, 0xb3 116 }; 117 const uint32_t result = 0xec638d62; 118 uint32_t act; 119 120 act = sse42_crc32c(~0, input, sizeof(input)); 121 ATF_REQUIRE_MSG(act == result, "expected 0x%08x, got 0x%08x", result, 122 act); 123 } 124 125 ATF_TP_ADD_TCS(tp) 126 { 127 128 ATF_TP_ADD_TC(tp, crc32c_basic_correctness); 129 ATF_TP_ADD_TC(tp, crc32c_alignment); 130 ATF_TP_ADD_TC(tp, crc32c_trailing_bytes); 131 return (atf_no_error()); 132 } 133