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
27 #include <sys/param.h>
28 #include <sys/gsb_crc32.h>
34 #if defined(__amd64__) || defined(__i386__)
35 #include <machine/cpufunc.h>
36 #include <machine/specialreg.h>
41 u_int cpu_registers[4];
43 do_cpuid(1, cpu_registers);
45 return ((cpu_registers[2] & CPUID2_SSE42) != 0);
50 check_crc32c(uint32_t expected, uint32_t crc32c, const void *buffer,
55 #if defined(__amd64__) || defined(__i386__)
57 act = sse42_crc32c(crc32c, buffer, length);
58 ATF_CHECK_EQ_MSG(expected, act,
59 "sse42_crc32c expected 0x%08x, got 0x%08x", expected, act);
61 #elif defined(__aarch64__)
62 act = armv8_crc32c(crc32c, buffer, length);
63 ATF_CHECK_EQ_MSG(expected, act,
64 "armv8_crc32c expected 0x%08x, got 0x%08x", expected, act);
66 act = singletable_crc32c(crc32c, buffer, length);
67 ATF_CHECK_EQ_MSG(expected, act,
68 "singletable_crc32c expected 0x%08x, got 0x%08x", expected, act);
69 act = multitable_crc32c(crc32c, buffer, length);
70 ATF_CHECK_EQ_MSG(expected, act,
71 "multitable_crc32c expected 0x%08x, got 0x%08x", expected, act);
74 ATF_TC_WITHOUT_HEAD(crc32c_basic_correctness);
75 ATF_TC_BODY(crc32c_basic_correctness, tc)
77 const uint64_t inputs[] = {
95 const uint32_t results[] = {
115 ATF_REQUIRE(nitems(inputs) == nitems(results));
117 for (i = 0; i < nitems(inputs); i++) {
118 check_crc32c(results[i], ~0u, &inputs[i], sizeof(inputs[0]));
122 ATF_TC_WITHOUT_HEAD(crc32c_alignment);
123 ATF_TC_BODY(crc32c_alignment, tc)
125 const uint64_t input = 0xf408c634b3a9142;
126 const uint32_t result = 0x2ce33ede;
127 unsigned char buf[15];
130 for (i = 1; i < 8; i++) {
131 memcpy(&buf[i], &input, sizeof(input));
132 check_crc32c(result, ~0u, &buf[i], sizeof(input));
136 ATF_TC_WITHOUT_HEAD(crc32c_trailing_bytes);
137 ATF_TC_BODY(crc32c_trailing_bytes, tc)
139 const unsigned char input[] = {
140 0x87, 0x54, 0x74, 0xd2, 0xb, 0x9b, 0xdd, 0xf6, 0x68, 0x37,
141 0xd4, 0x4, 0x5e, 0xa9, 0xb3
143 const uint32_t result = 0xec638d62;
145 check_crc32c(result, ~0u, input, sizeof(input));
151 ATF_TP_ADD_TC(tp, crc32c_basic_correctness);
152 ATF_TP_ADD_TC(tp, crc32c_alignment);
153 ATF_TP_ADD_TC(tp, crc32c_trailing_bytes);
154 return (atf_no_error());