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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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 V8_WASM_MODULE_DECODER_H_ | 5 #ifndef V8_WASM_MODULE_DECODER_H_ |
6 #define V8_WASM_MODULE_DECODER_H_ | 6 #define V8_WASM_MODULE_DECODER_H_ |
7 | 7 |
8 #include "src/wasm/ast-decoder.h" | 8 #include "src/wasm/ast-decoder.h" |
9 #include "src/wasm/wasm-module.h" | 9 #include "src/wasm/wasm-module.h" |
10 #include "src/wasm/wasm-result.h" | 10 #include "src/wasm/wasm-result.h" |
11 | 11 |
12 namespace v8 { | 12 namespace v8 { |
13 namespace internal { | 13 namespace internal { |
14 namespace wasm { | 14 namespace wasm { |
15 | 15 |
16 typedef Result<const WasmModule*> ModuleResult; | 16 typedef Result<const WasmModule*> ModuleResult; |
17 typedef Result<WasmFunction*> FunctionResult; | 17 typedef Result<WasmFunction*> FunctionResult; |
18 typedef std::vector<std::pair<int, int>> FunctionOffsets; | 18 typedef std::vector<std::pair<int, int>> FunctionOffsets; |
19 typedef Result<FunctionOffsets> FunctionOffsetsResult; | 19 typedef Result<FunctionOffsets> FunctionOffsetsResult; |
| 20 typedef std::vector<std::vector<std::pair<int, int>>> AsmJsOffsets; |
| 21 typedef Result<AsmJsOffsets> AsmJsOffsetsResult; |
20 | 22 |
21 // Decodes the bytes of a WASM module between {module_start} and {module_end}. | 23 // Decodes the bytes of a WASM module between {module_start} and {module_end}. |
22 V8_EXPORT_PRIVATE ModuleResult DecodeWasmModule(Isolate* isolate, Zone* zone, | 24 V8_EXPORT_PRIVATE ModuleResult DecodeWasmModule(Isolate* isolate, Zone* zone, |
23 const byte* module_start, | 25 const byte* module_start, |
24 const byte* module_end, | 26 const byte* module_end, |
25 bool verify_functions, | 27 bool verify_functions, |
26 ModuleOrigin origin); | 28 ModuleOrigin origin); |
27 | 29 |
28 // Exposed for testing. Decodes a single function signature, allocating it | 30 // Exposed for testing. Decodes a single function signature, allocating it |
29 // in the given zone. Returns {nullptr} upon failure. | 31 // in the given zone. Returns {nullptr} upon failure. |
30 FunctionSig* DecodeWasmSignatureForTesting(Zone* zone, const byte* start, | 32 FunctionSig* DecodeWasmSignatureForTesting(Zone* zone, const byte* start, |
31 const byte* end); | 33 const byte* end); |
32 | 34 |
33 // Decodes the bytes of a WASM function between | 35 // Decodes the bytes of a WASM function between |
34 // {function_start} and {function_end}. | 36 // {function_start} and {function_end}. |
35 FunctionResult DecodeWasmFunction(Isolate* isolate, Zone* zone, ModuleEnv* env, | 37 FunctionResult DecodeWasmFunction(Isolate* isolate, Zone* zone, ModuleEnv* env, |
36 const byte* function_start, | 38 const byte* function_start, |
37 const byte* function_end); | 39 const byte* function_end); |
38 | 40 |
39 // Extracts the function offset table from the wasm module bytes. | 41 // Extracts the function offset table from the wasm module bytes. |
40 // Returns a vector with <offset, length> entries, or failure if the wasm bytes | 42 // Returns a vector with <offset, length> entries, or failure if the wasm bytes |
41 // are detected as invalid. Note that this validation is not complete. | 43 // are detected as invalid. Note that this validation is not complete. |
42 FunctionOffsetsResult DecodeWasmFunctionOffsets( | 44 FunctionOffsetsResult DecodeWasmFunctionOffsets( |
43 const byte* module_start, const byte* module_end, | 45 const byte* module_start, const byte* module_end, |
44 uint32_t num_imported_functions); | 46 uint32_t num_imported_functions); |
45 | 47 |
46 WasmInitExpr DecodeWasmInitExprForTesting(const byte* start, const byte* end); | 48 WasmInitExpr DecodeWasmInitExprForTesting(const byte* start, const byte* end); |
47 | 49 |
| 50 // Extracts the mapping from wasm byte offset to asm.js source position per |
| 51 // function. |
| 52 // Returns a vector of vectors with <byte_offset, source_position> entries, or |
| 53 // failure if the wasm bytes are detected as invalid. Note that this validation |
| 54 // is not complete. |
| 55 AsmJsOffsetsResult DecodeAsmJsOffsets(const byte* module_start, |
| 56 const byte* module_end, |
| 57 uint32_t num_imported_functions); |
| 58 |
48 } // namespace wasm | 59 } // namespace wasm |
49 } // namespace internal | 60 } // namespace internal |
50 } // namespace v8 | 61 } // namespace v8 |
51 | 62 |
52 #endif // V8_WASM_MODULE_DECODER_H_ | 63 #endif // V8_WASM_MODULE_DECODER_H_ |
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