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: stable/11/tests/sys/kern/libkern_crc32.c 319404 2017-06-01 09:00:38Z tuexen $
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__)
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
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,
50		0x899345850ed0a286,
51		0x2302df11b4a43b15,
52		0xe943de7b3d35d70,
53		0xdf1ff2bf41abf56b,
54		0x9bc138abae315de2,
55		0x31cc82e56234f0ff,
56		0xce63c0cd6988e847,
57		0x3e42f6b78ee352fa,
58		0xfa4085436078cfa6,
59		0x53349558bf670a4b,
60		0x2714e10e7d722c61,
61		0xc0d3261addfc6908,
62		0xd1567c3181d3a1bf,
63	};
64	const uint32_t results[] = {
65		0x2ce33ede,
66		0xc49cc573,
67		0xb8683c96,
68		0x6918660d,
69		0xa904e522,
70		0x52dbc42c,
71		0x98863c22,
72		0x894d5d2c,
73		0xb003745d,
74		0xfc496dbd,
75		0x97d2fbb5,
76		0x3c062ef1,
77		0xcc2eff18,
78		0x6a9b09f6,
79		0x420242c1,
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__)
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
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__)
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
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__)
136	act = sse42_crc32c(~0, input, sizeof(input));
137#else
138	act = armv8_crc32c(~0, input, sizeof(input));
139#endif
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}
152