libkern_crc32.c (9b3ece1c2eb92a881cb2553271e123382bfe31c1) libkern_crc32.c (d7f27102b590ec681c189d71d42d6679dce0ee65)
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

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27 */
28
29#include <sys/param.h>
30
31#include <stdint.h>
32
33#include <atf-c.h>
34
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

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27 */
28
29#include <sys/param.h>
30
31#include <stdint.h>
32
33#include <atf-c.h>
34
35#if defined(__amd64__) || defined(__i386__)
35extern uint32_t sse42_crc32c(uint32_t, const unsigned char *, unsigned);
36extern uint32_t sse42_crc32c(uint32_t, const unsigned char *, unsigned);
37#elif defined(__aarch64__)
38extern uint32_t armv8_crc32c(uint32_t, const unsigned char *, unsigned);
39#else
40#error These tests are not supported on this platform
41#endif
36
37ATF_TC_WITHOUT_HEAD(crc32c_basic_correctness);
38ATF_TC_BODY(crc32c_basic_correctness, tc)
39{
40 const uint64_t inputs[] = {
41 0xf408c634b3a9142,
42 0x80539e8c7c352e2b,
43 0x62e9121db6e4d649,

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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++) {
42
43ATF_TC_WITHOUT_HEAD(crc32c_basic_correctness);
44ATF_TC_BODY(crc32c_basic_correctness, tc)
45{
46 const uint64_t inputs[] = {
47 0xf408c634b3a9142,
48 0x80539e8c7c352e2b,
49 0x62e9121db6e4d649,

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80 0xfd562dc3,
81 };
82 size_t i;
83 uint32_t act;
84
85 ATF_REQUIRE(nitems(inputs) == nitems(results));
86
87 for (i = 0; i < nitems(inputs); i++) {
88#if defined(__amd64__) || defined(__i386__)
82 act = sse42_crc32c(~0, (const void *)&inputs[i],
83 sizeof(inputs[0]));
89 act = sse42_crc32c(~0, (const void *)&inputs[i],
90 sizeof(inputs[0]));
91#else
92 act = armv8_crc32c(~0, (const void *)&inputs[i],
93 sizeof(inputs[0]));
94#endif
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
90ATF_TC_WITHOUT_HEAD(crc32c_alignment);
91ATF_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
95 ATF_REQUIRE_MSG(act == results[i],
96 "crc32c(0x%jx) = 0x%08x, got 0x%08x", (uintmax_t)inputs[i],
97 results[i], act);
98 }
99}
100
101ATF_TC_WITHOUT_HEAD(crc32c_alignment);
102ATF_TC_BODY(crc32c_alignment, tc)
103{
104 const uint64_t input = 0xf408c634b3a9142;
105 const uint32_t result = 0x2ce33ede;
106 unsigned char buf[15];
107 size_t i;
108 uint32_t act;
109
110
111 for (i = 1; i < 8; i++) {
112 memcpy(&buf[i], &input, sizeof(input));
113
114#if defined(__amd64__) || defined(__i386__)
103 act = sse42_crc32c(~0, (const void *)&buf[i], sizeof(input));
115 act = sse42_crc32c(~0, (const void *)&buf[i], sizeof(input));
116#else
117 act = armv8_crc32c(~0, (const void *)&buf[i], sizeof(input));
118#endif
104 ATF_REQUIRE_MSG(act == result,
105 "crc32c(0x%jx) = 0x%08x, got 0x%08x", (uintmax_t)input,
106 result, act);
107 }
108}
109
110ATF_TC_WITHOUT_HEAD(crc32c_trailing_bytes);
111ATF_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
119 ATF_REQUIRE_MSG(act == result,
120 "crc32c(0x%jx) = 0x%08x, got 0x%08x", (uintmax_t)input,
121 result, act);
122 }
123}
124
125ATF_TC_WITHOUT_HEAD(crc32c_trailing_bytes);
126ATF_TC_BODY(crc32c_trailing_bytes, tc)
127{
128 const unsigned char input[] = {
129 0x87, 0x54, 0x74, 0xd2, 0xb, 0x9b, 0xdd, 0xf6, 0x68, 0x37,
130 0xd4, 0x4, 0x5e, 0xa9, 0xb3
131 };
132 const uint32_t result = 0xec638d62;
133 uint32_t act;
134
135#if defined(__amd64__) || defined(__i386__)
120 act = sse42_crc32c(~0, input, sizeof(input));
136 act = sse42_crc32c(~0, input, sizeof(input));
137#else
138 act = armv8_crc32c(~0, input, sizeof(input));
139#endif
121 ATF_REQUIRE_MSG(act == result, "expected 0x%08x, got 0x%08x", result,
122 act);
123}
124
125ATF_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}
140 ATF_REQUIRE_MSG(act == result, "expected 0x%08x, got 0x%08x", result,
141 act);
142}
143
144ATF_TP_ADD_TCS(tp)
145{
146
147 ATF_TP_ADD_TC(tp, crc32c_basic_correctness);
148 ATF_TP_ADD_TC(tp, crc32c_alignment);
149 ATF_TP_ADD_TC(tp, crc32c_trailing_bytes);
150 return (atf_no_error());
151}