Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "test/unittests/test-utils.h" |
| 6 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 7 | #include "src/objects-inl.h" |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 8 | #include "src/wasm/decoder.h" |
| 9 | #include "src/wasm/leb-helper.h" |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | namespace wasm { |
| 14 | |
| 15 | class LEBHelperTest : public TestWithZone {}; |
| 16 | |
| 17 | TEST_F(LEBHelperTest, sizeof_u32v) { |
| 18 | EXPECT_EQ(1, LEBHelper::sizeof_u32v(0)); |
| 19 | EXPECT_EQ(1, LEBHelper::sizeof_u32v(1)); |
| 20 | EXPECT_EQ(1, LEBHelper::sizeof_u32v(3)); |
| 21 | |
| 22 | for (uint32_t i = 4; i < 128; i++) { |
| 23 | EXPECT_EQ(1, LEBHelper::sizeof_u32v(i)); |
| 24 | } |
| 25 | |
| 26 | for (uint32_t i = (1 << 7); i < (1 << 9); i++) { |
| 27 | EXPECT_EQ(2, LEBHelper::sizeof_u32v(i)); |
| 28 | } |
| 29 | |
| 30 | for (uint32_t i = (1 << 14); i < (1 << 16); i += 33) { |
| 31 | EXPECT_EQ(3, LEBHelper::sizeof_u32v(i)); |
| 32 | } |
| 33 | |
| 34 | for (uint32_t i = (1 << 21); i < (1 << 24); i += 33999) { |
| 35 | EXPECT_EQ(4, LEBHelper::sizeof_u32v(i)); |
| 36 | } |
| 37 | |
| 38 | for (uint32_t i = (1 << 28); i < (1 << 31); i += 33997779) { |
| 39 | EXPECT_EQ(5, LEBHelper::sizeof_u32v(i)); |
| 40 | } |
| 41 | |
| 42 | EXPECT_EQ(5, LEBHelper::sizeof_u32v(0xFFFFFFFF)); |
| 43 | } |
| 44 | |
| 45 | TEST_F(LEBHelperTest, sizeof_i32v) { |
| 46 | EXPECT_EQ(1, LEBHelper::sizeof_i32v(0)); |
| 47 | EXPECT_EQ(1, LEBHelper::sizeof_i32v(1)); |
| 48 | EXPECT_EQ(1, LEBHelper::sizeof_i32v(3)); |
| 49 | |
| 50 | for (int32_t i = 0; i < (1 << 6); i++) { |
| 51 | EXPECT_EQ(1, LEBHelper::sizeof_i32v(i)); |
| 52 | } |
| 53 | |
| 54 | for (int32_t i = (1 << 6); i < (1 << 8); i++) { |
| 55 | EXPECT_EQ(2, LEBHelper::sizeof_i32v(i)); |
| 56 | } |
| 57 | |
| 58 | for (int32_t i = (1 << 13); i < (1 << 15); i += 31) { |
| 59 | EXPECT_EQ(3, LEBHelper::sizeof_i32v(i)); |
| 60 | } |
| 61 | |
| 62 | for (int32_t i = (1 << 20); i < (1 << 22); i += 31991) { |
| 63 | EXPECT_EQ(4, LEBHelper::sizeof_i32v(i)); |
| 64 | } |
| 65 | |
| 66 | for (int32_t i = (1 << 27); i < (1 << 29); i += 3199893) { |
| 67 | EXPECT_EQ(5, LEBHelper::sizeof_i32v(i)); |
| 68 | } |
| 69 | |
| 70 | for (int32_t i = -(1 << 6); i <= 0; i++) { |
| 71 | EXPECT_EQ(1, LEBHelper::sizeof_i32v(i)); |
| 72 | } |
| 73 | |
| 74 | for (int32_t i = -(1 << 13); i < -(1 << 6); i++) { |
| 75 | EXPECT_EQ(2, LEBHelper::sizeof_i32v(i)); |
| 76 | } |
| 77 | |
| 78 | for (int32_t i = -(1 << 20); i < -(1 << 18); i += 11) { |
| 79 | EXPECT_EQ(3, LEBHelper::sizeof_i32v(i)); |
| 80 | } |
| 81 | |
| 82 | for (int32_t i = -(1 << 27); i < -(1 << 25); i += 11999) { |
| 83 | EXPECT_EQ(4, LEBHelper::sizeof_i32v(i)); |
| 84 | } |
| 85 | |
| 86 | for (int32_t i = -(1 << 30); i < -(1 << 28); i += 1199999) { |
| 87 | EXPECT_EQ(5, LEBHelper::sizeof_i32v(i)); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | #define DECLARE_ENCODE_DECODE_CHECKER(ctype, name) \ |
| 92 | static void CheckEncodeDecode_##name(ctype val) { \ |
| 93 | static const int kSize = 16; \ |
| 94 | static byte buffer[kSize]; \ |
| 95 | byte *ptr = buffer; \ |
| 96 | LEBHelper::write_##name(&ptr, val); \ |
| 97 | EXPECT_EQ(LEBHelper::sizeof_##name(val), \ |
| 98 | static_cast<size_t>(ptr - buffer)); \ |
| 99 | Decoder decoder(buffer, buffer + kSize); \ |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 100 | unsigned length = 0; \ |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 101 | ctype result = decoder.checked_read_##name(buffer, 0, &length); \ |
| 102 | EXPECT_EQ(val, result); \ |
| 103 | EXPECT_EQ(LEBHelper::sizeof_##name(val), static_cast<size_t>(length)); \ |
| 104 | } |
| 105 | |
| 106 | DECLARE_ENCODE_DECODE_CHECKER(int32_t, i32v) |
| 107 | DECLARE_ENCODE_DECODE_CHECKER(uint32_t, u32v) |
| 108 | DECLARE_ENCODE_DECODE_CHECKER(int64_t, i64v) |
| 109 | DECLARE_ENCODE_DECODE_CHECKER(uint64_t, u64v) |
| 110 | |
| 111 | TEST_F(LEBHelperTest, WriteAndDecode_u32v) { |
| 112 | CheckEncodeDecode_u32v(0); |
| 113 | CheckEncodeDecode_u32v(1); |
| 114 | CheckEncodeDecode_u32v(5); |
| 115 | CheckEncodeDecode_u32v(99); |
| 116 | CheckEncodeDecode_u32v(298); |
| 117 | CheckEncodeDecode_u32v(87348723); |
| 118 | CheckEncodeDecode_u32v(77777); |
| 119 | |
| 120 | for (uint32_t val = 0x3a; val != 0; val = val << 1) { |
| 121 | CheckEncodeDecode_u32v(val); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | TEST_F(LEBHelperTest, WriteAndDecode_i32v) { |
| 126 | CheckEncodeDecode_i32v(0); |
| 127 | CheckEncodeDecode_i32v(1); |
| 128 | CheckEncodeDecode_i32v(5); |
| 129 | CheckEncodeDecode_i32v(99); |
| 130 | CheckEncodeDecode_i32v(298); |
| 131 | CheckEncodeDecode_i32v(87348723); |
| 132 | CheckEncodeDecode_i32v(77777); |
| 133 | |
| 134 | CheckEncodeDecode_i32v(-2); |
| 135 | CheckEncodeDecode_i32v(-4); |
| 136 | CheckEncodeDecode_i32v(-59); |
| 137 | CheckEncodeDecode_i32v(-288); |
| 138 | CheckEncodeDecode_i32v(-12608); |
| 139 | CheckEncodeDecode_i32v(-87328723); |
| 140 | CheckEncodeDecode_i32v(-77377); |
| 141 | |
| 142 | for (uint32_t val = 0x3a; val != 0; val = val << 1) { |
| 143 | CheckEncodeDecode_i32v(bit_cast<int32_t>(val)); |
| 144 | } |
| 145 | |
| 146 | for (uint32_t val = 0xFFFFFF3B; val != 0; val = val << 1) { |
| 147 | CheckEncodeDecode_i32v(bit_cast<int32_t>(val)); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | TEST_F(LEBHelperTest, WriteAndDecode_u64v) { |
| 152 | CheckEncodeDecode_u64v(0); |
| 153 | CheckEncodeDecode_u64v(1); |
| 154 | CheckEncodeDecode_u64v(5); |
| 155 | CheckEncodeDecode_u64v(99); |
| 156 | CheckEncodeDecode_u64v(298); |
| 157 | CheckEncodeDecode_u64v(87348723); |
| 158 | CheckEncodeDecode_u64v(77777); |
| 159 | |
| 160 | for (uint64_t val = 0x3a; val != 0; val = val << 1) { |
| 161 | CheckEncodeDecode_u64v(val); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | TEST_F(LEBHelperTest, WriteAndDecode_i64v) { |
| 166 | CheckEncodeDecode_i64v(0); |
| 167 | CheckEncodeDecode_i64v(1); |
| 168 | CheckEncodeDecode_i64v(5); |
| 169 | CheckEncodeDecode_i64v(99); |
| 170 | CheckEncodeDecode_i64v(298); |
| 171 | CheckEncodeDecode_i64v(87348723); |
| 172 | CheckEncodeDecode_i64v(77777); |
| 173 | |
| 174 | CheckEncodeDecode_i64v(-2); |
| 175 | CheckEncodeDecode_i64v(-4); |
| 176 | CheckEncodeDecode_i64v(-59); |
| 177 | CheckEncodeDecode_i64v(-288); |
| 178 | CheckEncodeDecode_i64v(-87648723); |
| 179 | CheckEncodeDecode_i64v(-77377); |
| 180 | |
| 181 | for (uint64_t val = 0x3a; val != 0; val = val << 1) { |
| 182 | CheckEncodeDecode_i64v(bit_cast<int64_t>(val)); |
| 183 | } |
| 184 | |
| 185 | for (uint64_t val = 0xFFFFFFFFFFFFFF3B; val != 0; val = val << 1) { |
| 186 | CheckEncodeDecode_i64v(bit_cast<int64_t>(val)); |
| 187 | } |
| 188 | } |
| 189 | } // namespace wasm |
| 190 | } // namespace internal |
| 191 | } // namespace v8 |