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 38 static size_t 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 62 static void 63 hash_variant_verify(hash_variant_t variant) 64 { 65 const size_t hashbytes = hash_variant_bits(variant) / 8; 66 uint8_t key[256]; 67 VARIABLE_ARRAY(uint8_t, hashes, hashbytes * 256); 68 VARIABLE_ARRAY(uint8_t, final, hashbytes); 69 unsigned i; 70 uint32_t computed, expected; 71 72 memset(key, 0, sizeof(key)); 73 memset(hashes, 0, sizeof(hashes)); 74 memset(final, 0, sizeof(final)); 75 76 /* 77 * Hash keys of the form {0}, {0,1}, {0,1,2}, ..., {0,1,...,255} as the 78 * seed. 79 */ 80 for (i = 0; i < 256; i++) { 81 key[i] = (uint8_t)i; 82 switch (variant) { 83 case hash_variant_x86_32: { 84 uint32_t out; 85 out = hash_x86_32(key, i, 256-i); 86 memcpy(&hashes[i*hashbytes], &out, hashbytes); 87 break; 88 } case hash_variant_x86_128: { 89 uint64_t out[2]; 90 hash_x86_128(key, i, 256-i, out); 91 memcpy(&hashes[i*hashbytes], out, hashbytes); 92 break; 93 } case hash_variant_x64_128: { 94 uint64_t out[2]; 95 hash_x64_128(key, i, 256-i, out); 96 memcpy(&hashes[i*hashbytes], out, hashbytes); 97 break; 98 } default: not_reached(); 99 } 100 } 101 102 /* Hash the result array. */ 103 switch (variant) { 104 case hash_variant_x86_32: { 105 uint32_t out = hash_x86_32(hashes, hashbytes*256, 0); 106 memcpy(final, &out, sizeof(out)); 107 break; 108 } case hash_variant_x86_128: { 109 uint64_t out[2]; 110 hash_x86_128(hashes, hashbytes*256, 0, out); 111 memcpy(final, out, sizeof(out)); 112 break; 113 } case hash_variant_x64_128: { 114 uint64_t out[2]; 115 hash_x64_128(hashes, hashbytes*256, 0, out); 116 memcpy(final, out, sizeof(out)); 117 break; 118 } default: not_reached(); 119 } 120 121 computed = (final[0] << 0) | (final[1] << 8) | (final[2] << 16) | 122 (final[3] << 24); 123 124 switch (variant) { 125 #ifdef JEMALLOC_BIG_ENDIAN 126 case hash_variant_x86_32: expected = 0x6213303eU; break; 127 case hash_variant_x86_128: expected = 0x266820caU; break; 128 case hash_variant_x64_128: expected = 0xcc622b6fU; break; 129 #else 130 case hash_variant_x86_32: expected = 0xb0f57ee3U; break; 131 case hash_variant_x86_128: expected = 0xb3ece62aU; break; 132 case hash_variant_x64_128: expected = 0x6384ba69U; break; 133 #endif 134 default: not_reached(); 135 } 136 137 assert_u32_eq(computed, expected, 138 "Hash mismatch for %s(): expected %#x but got %#x", 139 hash_variant_string(variant), expected, computed); 140 } 141 142 TEST_BEGIN(test_hash_x86_32) 143 { 144 145 hash_variant_verify(hash_variant_x86_32); 146 } 147 TEST_END 148 149 TEST_BEGIN(test_hash_x86_128) 150 { 151 152 hash_variant_verify(hash_variant_x86_128); 153 } 154 TEST_END 155 156 TEST_BEGIN(test_hash_x64_128) 157 { 158 159 hash_variant_verify(hash_variant_x64_128); 160 } 161 TEST_END 162 163 int 164 main(void) 165 { 166 167 return (test( 168 test_hash_x86_32, 169 test_hash_x86_128, 170 test_hash_x64_128)); 171 } 172
