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1 // Copyright 2016 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef WASM_RUN_UTILS_H | 5 #ifndef WASM_RUN_UTILS_H |
6 #define WASM_RUN_UTILS_H | 6 #define WASM_RUN_UTILS_H |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 #include <stdlib.h> | 9 #include <stdlib.h> |
10 #include <string.h> | 10 #include <string.h> |
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140 | 140 |
141 template <typename T> | 141 template <typename T> |
142 T* raw_mem_end() { | 142 T* raw_mem_end() { |
143 DCHECK(instance->mem_start); | 143 DCHECK(instance->mem_start); |
144 return reinterpret_cast<T*>(instance->mem_start + instance->mem_size); | 144 return reinterpret_cast<T*>(instance->mem_start + instance->mem_size); |
145 } | 145 } |
146 | 146 |
147 template <typename T> | 147 template <typename T> |
148 T raw_mem_at(int i) { | 148 T raw_mem_at(int i) { |
149 DCHECK(instance->mem_start); | 149 DCHECK(instance->mem_start); |
150 return reinterpret_cast<T*>(instance->mem_start)[i]; | 150 return ReadMemory(&(reinterpret_cast<T*>(instance->mem_start)[i])); |
151 } | 151 } |
152 | 152 |
153 template <typename T> | 153 template <typename T> |
154 T raw_val_at(int i) { | 154 T raw_val_at(int i) { |
155 T val; | 155 return ReadMemory(reinterpret_cast<T*>(instance->mem_start + i)); |
156 memcpy(&val, reinterpret_cast<void*>(instance->mem_start + i), sizeof(T)); | 156 } |
157 return val; | 157 |
158 template <typename T> | |
159 void WriteMemory(T* p, T val) { | |
titzer
2016/06/06 07:44:00
Can we unify these routines with the others?
ivica.bogosavljevic
2016/06/13 14:59:02
We could use ReadLittleEndianValue and WriteLittle
| |
160 #if defined(V8_TARGET_LITTLE_ENDIAN) | |
161 memcpy(p, &val, sizeof(T)); | |
162 #elif defined(V8_TARGET_BIG_ENDIAN) | |
163 byte* src = reinterpret_cast<byte*>(&val); | |
164 byte* dst = reinterpret_cast<byte*>(p); | |
165 for (int i = 0; i < sizeof(T); i++) { | |
166 dst[i] = src[sizeof(T) - i - 1]; | |
167 } | |
168 #else | |
169 #error Unsupported endianness | |
170 #endif | |
ivica.bogosavljevic
2016/06/13 14:59:02
For myself: Commented code, needs to be removed
| |
171 // byte * tmp = reinterpret_cast<byte*>(p); | |
172 // T v = val; | |
173 // for (int i = 0; i < sizeof(T); i++) { | |
174 // tmp[i] = v & 0xff; | |
175 // v = v >> 8; | |
176 // } | |
177 } | |
178 | |
179 template <typename T> | |
180 T ReadMemory(T* p) { | |
181 T ret; | |
182 #if defined(V8_TARGET_LITTLE_ENDIAN) | |
183 memcpy(&ret, p, sizeof(T)); | |
184 #elif defined(V8_TARGET_BIG_ENDIAN) | |
185 byte* src = reinterpret_cast<byte*>(p); | |
186 byte* dst = reinterpret_cast<byte*>(&ret); | |
187 for (int i = 0; i < sizeof(T); i++) { | |
188 dst[i] = src[sizeof(T) - i - 1]; | |
189 } | |
190 #else | |
191 #error Unsupported endianness | |
192 #endif | |
193 return ret; | |
194 // T val = 0; | |
195 // byte * tmp = reinterpret_cast<byte*>(p); | |
196 // for (int i = sizeof(T) - 1; i >= 0; i--) { | |
197 // val = val << 8; | |
198 // val = val | tmp[i]; | |
199 // } | |
200 // return val; | |
158 } | 201 } |
159 | 202 |
160 // Zero-initialize the memory. | 203 // Zero-initialize the memory. |
161 void BlankMemory() { | 204 void BlankMemory() { |
162 byte* raw = raw_mem_start<byte>(); | 205 byte* raw = raw_mem_start<byte>(); |
163 memset(raw, 0, instance->mem_size); | 206 memset(raw, 0, instance->mem_size); |
164 } | 207 } |
165 | 208 |
166 // Pseudo-randomly intialize the memory. | 209 // Pseudo-randomly intialize the memory. |
167 void RandomizeMemory(unsigned int seed = 88) { | 210 void RandomizeMemory(unsigned int seed = 88) { |
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762 // interpreter. | 805 // interpreter. |
763 #define WASM_EXEC_TEST(name) \ | 806 #define WASM_EXEC_TEST(name) \ |
764 void RunWasm_##name(WasmExecutionMode execution_mode); \ | 807 void RunWasm_##name(WasmExecutionMode execution_mode); \ |
765 TEST(RunWasmCompiled_##name) { RunWasm_##name(kExecuteCompiled); } \ | 808 TEST(RunWasmCompiled_##name) { RunWasm_##name(kExecuteCompiled); } \ |
766 TEST(RunWasmInterpreted_##name) { RunWasm_##name(kExecuteInterpreted); } \ | 809 TEST(RunWasmInterpreted_##name) { RunWasm_##name(kExecuteInterpreted); } \ |
767 void RunWasm_##name(WasmExecutionMode execution_mode) | 810 void RunWasm_##name(WasmExecutionMode execution_mode) |
768 | 811 |
769 } // namespace | 812 } // namespace |
770 | 813 |
771 #endif | 814 #endif |
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