Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 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"); |
Jason Evans | eca367b | 2013-12-17 09:14:39 -0800 | [diff] [blame] | 57 | case hash_variant_x64_128: return ("hash_x64_128"); |
Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 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]; |
Mike Hommey | f41f143 | 2014-05-21 17:24:08 +0900 | [diff] [blame^] | 67 | VARIABLE_ARRAY(uint8_t, hashes, hashbytes * 256); |
| 68 | VARIABLE_ARRAY(uint8_t, final, hashbytes); |
Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 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; |
Jason Evans | 5aeeda6 | 2014-01-02 13:38:23 -0800 | [diff] [blame] | 93 | } case hash_variant_x64_128: { |
Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 94 | uint64_t out[2]; |
| 95 | hash_x64_128(key, i, 256-i, out); |
| 96 | memcpy(&hashes[i*hashbytes], out, hashbytes); |
| 97 | break; |
Jason Evans | 5aeeda6 | 2014-01-02 13:38:23 -0800 | [diff] [blame] | 98 | } default: not_reached(); |
Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 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) { |
Jason Evans | df3f270 | 2014-03-30 16:27:08 -0700 | [diff] [blame] | 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 |
Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 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; |
Jason Evans | df3f270 | 2014-03-30 16:27:08 -0700 | [diff] [blame] | 133 | #endif |
Jason Evans | e6b7aa4 | 2013-12-16 22:55:41 -0800 | [diff] [blame] | 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 | } |