2 * Copyright (c) 2017 Conrad Meyer <cem@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/param.h>
30 #include <sys/gsb_crc32.h>
36 #if defined(__amd64__) || defined(__i386__)
37 #include <machine/cpufunc.h>
38 #include <machine/specialreg.h>
43 u_int cpu_registers[4];
45 do_cpuid(1, cpu_registers);
47 return ((cpu_registers[2] & CPUID2_SSE42) != 0);
52 check_crc32c(uint32_t expected, uint32_t crc32c, const void *buffer,
57 #if defined(__amd64__) || defined(__i386__)
59 act = sse42_crc32c(crc32c, buffer, length);
60 ATF_CHECK_EQ_MSG(expected, act,
61 "sse42_crc32c expected 0x%08x, got 0x%08x", expected, act);
63 #elif defined(__aarch64__)
64 act = armv8_crc32c(crc32c, buffer, length);
65 ATF_CHECK_EQ_MSG(expected, act,
66 "armv8_crc32c expected 0x%08x, got 0x%08x", expected, act);
68 act = singletable_crc32c(crc32c, buffer, length);
69 ATF_CHECK_EQ_MSG(expected, act,
70 "singletable_crc32c expected 0x%08x, got 0x%08x", expected, act);
71 act = multitable_crc32c(crc32c, buffer, length);
72 ATF_CHECK_EQ_MSG(expected, act,
73 "multitable_crc32c expected 0x%08x, got 0x%08x", expected, act);
76 ATF_TC_WITHOUT_HEAD(crc32c_basic_correctness);
77 ATF_TC_BODY(crc32c_basic_correctness, tc)
79 const uint64_t inputs[] = {
97 const uint32_t results[] = {
117 ATF_REQUIRE(nitems(inputs) == nitems(results));
119 for (i = 0; i < nitems(inputs); i++) {
120 check_crc32c(results[i], ~0u, &inputs[i], sizeof(inputs[0]));
124 ATF_TC_WITHOUT_HEAD(crc32c_alignment);
125 ATF_TC_BODY(crc32c_alignment, tc)
127 const uint64_t input = 0xf408c634b3a9142;
128 const uint32_t result = 0x2ce33ede;
129 unsigned char buf[15];
132 for (i = 1; i < 8; i++) {
133 memcpy(&buf[i], &input, sizeof(input));
134 check_crc32c(result, ~0u, &buf[i], sizeof(input));
138 ATF_TC_WITHOUT_HEAD(crc32c_trailing_bytes);
139 ATF_TC_BODY(crc32c_trailing_bytes, tc)
141 const unsigned char input[] = {
142 0x87, 0x54, 0x74, 0xd2, 0xb, 0x9b, 0xdd, 0xf6, 0x68, 0x37,
143 0xd4, 0x4, 0x5e, 0xa9, 0xb3
145 const uint32_t result = 0xec638d62;
147 check_crc32c(result, ~0u, input, sizeof(input));
153 ATF_TP_ADD_TC(tp, crc32c_basic_correctness);
154 ATF_TP_ADD_TC(tp, crc32c_alignment);
155 ATF_TP_ADD_TC(tp, crc32c_trailing_bytes);
156 return (atf_no_error());