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1a4d82fc JJ |
1 | /* |
2 | * This file is based on code that is part of SMHasher | |
3 | * (https://code.google.com/p/smhasher/), and is subject to the MIT license | |
4 | * (http://www.opensource.org/licenses/mit-license.php). Both email addresses | |
5 | * associated with the source code's revision history belong to Austin Appleby, | |
6 | * and the revision history ranges from 2010 to 2012. Therefore the copyright | |
7 | * and license are here taken to be: | |
8 | * | |
9 | * Copyright (c) 2010-2012 Austin Appleby | |
10 | * | |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
17 | * | |
18 | * The above copyright notice and this permission notice shall be included in | |
19 | * all copies or substantial portions of the Software. | |
20 | * | |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
27 | * THE SOFTWARE. | |
28 | */ | |
29 | ||
30 | #include "test/jemalloc_test.h" | |
31 | ||
32 | typedef enum { | |
33 | hash_variant_x86_32, | |
34 | hash_variant_x86_128, | |
35 | hash_variant_x64_128 | |
36 | } hash_variant_t; | |
37 | ||
54a0048b | 38 | static int |
1a4d82fc JJ |
39 | hash_variant_bits(hash_variant_t variant) |
40 | { | |
41 | ||
42 | switch (variant) { | |
43 | case hash_variant_x86_32: return (32); | |
44 | case hash_variant_x86_128: return (128); | |
45 | case hash_variant_x64_128: return (128); | |
46 | default: not_reached(); | |
47 | } | |
48 | } | |
49 | ||
50 | static const char * | |
51 | hash_variant_string(hash_variant_t variant) | |
52 | { | |
53 | ||
54 | switch (variant) { | |
55 | case hash_variant_x86_32: return ("hash_x86_32"); | |
56 | case hash_variant_x86_128: return ("hash_x86_128"); | |
57 | case hash_variant_x64_128: return ("hash_x64_128"); | |
58 | default: not_reached(); | |
59 | } | |
60 | } | |
61 | ||
54a0048b | 62 | #define KEY_SIZE 256 |
1a4d82fc | 63 | static void |
54a0048b | 64 | hash_variant_verify_key(hash_variant_t variant, uint8_t *key) |
1a4d82fc | 65 | { |
54a0048b SL |
66 | const int hashbytes = hash_variant_bits(variant) / 8; |
67 | const int hashes_size = hashbytes * 256; | |
68 | VARIABLE_ARRAY(uint8_t, hashes, hashes_size); | |
1a4d82fc JJ |
69 | VARIABLE_ARRAY(uint8_t, final, hashbytes); |
70 | unsigned i; | |
71 | uint32_t computed, expected; | |
72 | ||
54a0048b SL |
73 | memset(key, 0, KEY_SIZE); |
74 | memset(hashes, 0, hashes_size); | |
75 | memset(final, 0, hashbytes); | |
1a4d82fc JJ |
76 | |
77 | /* | |
78 | * Hash keys of the form {0}, {0,1}, {0,1,2}, ..., {0,1,...,255} as the | |
79 | * seed. | |
80 | */ | |
81 | for (i = 0; i < 256; i++) { | |
82 | key[i] = (uint8_t)i; | |
83 | switch (variant) { | |
84 | case hash_variant_x86_32: { | |
85 | uint32_t out; | |
86 | out = hash_x86_32(key, i, 256-i); | |
87 | memcpy(&hashes[i*hashbytes], &out, hashbytes); | |
88 | break; | |
89 | } case hash_variant_x86_128: { | |
90 | uint64_t out[2]; | |
91 | hash_x86_128(key, i, 256-i, out); | |
92 | memcpy(&hashes[i*hashbytes], out, hashbytes); | |
93 | break; | |
94 | } case hash_variant_x64_128: { | |
95 | uint64_t out[2]; | |
96 | hash_x64_128(key, i, 256-i, out); | |
97 | memcpy(&hashes[i*hashbytes], out, hashbytes); | |
98 | break; | |
99 | } default: not_reached(); | |
100 | } | |
101 | } | |
102 | ||
103 | /* Hash the result array. */ | |
104 | switch (variant) { | |
105 | case hash_variant_x86_32: { | |
54a0048b | 106 | uint32_t out = hash_x86_32(hashes, hashes_size, 0); |
1a4d82fc JJ |
107 | memcpy(final, &out, sizeof(out)); |
108 | break; | |
109 | } case hash_variant_x86_128: { | |
110 | uint64_t out[2]; | |
54a0048b | 111 | hash_x86_128(hashes, hashes_size, 0, out); |
1a4d82fc JJ |
112 | memcpy(final, out, sizeof(out)); |
113 | break; | |
114 | } case hash_variant_x64_128: { | |
115 | uint64_t out[2]; | |
54a0048b | 116 | hash_x64_128(hashes, hashes_size, 0, out); |
1a4d82fc JJ |
117 | memcpy(final, out, sizeof(out)); |
118 | break; | |
119 | } default: not_reached(); | |
120 | } | |
121 | ||
122 | computed = (final[0] << 0) | (final[1] << 8) | (final[2] << 16) | | |
123 | (final[3] << 24); | |
124 | ||
125 | switch (variant) { | |
126 | #ifdef JEMALLOC_BIG_ENDIAN | |
127 | case hash_variant_x86_32: expected = 0x6213303eU; break; | |
128 | case hash_variant_x86_128: expected = 0x266820caU; break; | |
129 | case hash_variant_x64_128: expected = 0xcc622b6fU; break; | |
130 | #else | |
131 | case hash_variant_x86_32: expected = 0xb0f57ee3U; break; | |
132 | case hash_variant_x86_128: expected = 0xb3ece62aU; break; | |
133 | case hash_variant_x64_128: expected = 0x6384ba69U; break; | |
134 | #endif | |
135 | default: not_reached(); | |
136 | } | |
137 | ||
138 | assert_u32_eq(computed, expected, | |
139 | "Hash mismatch for %s(): expected %#x but got %#x", | |
140 | hash_variant_string(variant), expected, computed); | |
141 | } | |
142 | ||
54a0048b SL |
143 | static void |
144 | hash_variant_verify(hash_variant_t variant) | |
145 | { | |
146 | #define MAX_ALIGN 16 | |
147 | uint8_t key[KEY_SIZE + (MAX_ALIGN - 1)]; | |
148 | unsigned i; | |
149 | ||
150 | for (i = 0; i < MAX_ALIGN; i++) | |
151 | hash_variant_verify_key(variant, &key[i]); | |
152 | #undef MAX_ALIGN | |
153 | } | |
154 | #undef KEY_SIZE | |
155 | ||
1a4d82fc JJ |
156 | TEST_BEGIN(test_hash_x86_32) |
157 | { | |
158 | ||
159 | hash_variant_verify(hash_variant_x86_32); | |
160 | } | |
161 | TEST_END | |
162 | ||
163 | TEST_BEGIN(test_hash_x86_128) | |
164 | { | |
165 | ||
166 | hash_variant_verify(hash_variant_x86_128); | |
167 | } | |
168 | TEST_END | |
169 | ||
170 | TEST_BEGIN(test_hash_x64_128) | |
171 | { | |
172 | ||
173 | hash_variant_verify(hash_variant_x64_128); | |
174 | } | |
175 | TEST_END | |
176 | ||
177 | int | |
178 | main(void) | |
179 | { | |
180 | ||
181 | return (test( | |
182 | test_hash_x86_32, | |
183 | test_hash_x86_128, | |
184 | test_hash_x64_128)); | |
185 | } |