Index: src/wasm/encoder.h |
diff --git a/src/wasm/encoder.h b/src/wasm/encoder.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..064eb859640d49103484d517ef1fd2f4193f4952 |
--- /dev/null |
+++ b/src/wasm/encoder.h |
@@ -0,0 +1,156 @@ |
+// Copyright 2015 the V8 project authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef V8_WASM_ENCODER_H_ |
+#define V8_WASM_ENCODER_H_ |
+ |
+#include "src/signature.h" |
+#include "src/zone-containers.h" |
+ |
+#include "src/base/smart-pointers.h" |
+ |
+#include "src/wasm/wasm-module.h" |
+#include "src/wasm/wasm-opcodes.h" |
+#include "src/wasm/wasm-result.h" |
+ |
+namespace v8 { |
+namespace internal { |
+namespace wasm { |
+ |
+class WasmModuleBuilder; |
+ |
+class WasmFunctionEncoder : public ZoneObject { |
+ public: |
+ uint32_t HeaderSize() const; |
+ uint32_t BodySize() const; |
+ uint32_t NameSize() const; |
+ void Serialize(byte* buffer, byte** header, byte** body) const; |
+ |
+ private: |
+ WasmFunctionEncoder(Zone* zone, LocalType return_type, bool exported, |
+ bool external); |
+ friend class WasmFunctionBuilder; |
+ uint16_t signature_index_; |
+ ZoneVector<LocalType> params_; |
+ uint16_t local_int32_count_; |
+ uint16_t local_int64_count_; |
+ uint16_t local_float32_count_; |
+ uint16_t local_float64_count_; |
+ bool exported_; |
+ bool external_; |
+ ZoneVector<uint8_t> body_; |
+ ZoneVector<char> name_; |
+ |
+ bool HasLocals() const { |
+ return (local_int32_count_ + local_int64_count_ + local_float32_count_ + |
+ local_float64_count_) > 0; |
+ } |
+ |
+ bool HasName() const { return exported_ && name_.size() > 0; } |
+}; |
+ |
+class WasmFunctionBuilder : public ZoneObject { |
+ public: |
+ uint16_t AddParam(LocalType type); |
+ uint16_t AddLocal(LocalType type); |
+ void ReturnType(LocalType type); |
+ void EmitCode(const byte* code, uint32_t code_size); |
+ void EmitCode(const byte* code, uint32_t code_size, |
+ const uint32_t* local_indices, uint32_t indices_size); |
+ void Emit(WasmOpcode opcode); |
+ void EmitWithU8(WasmOpcode opcode, const byte immediate); |
+ void EmitWithLocal(WasmOpcode opcode); |
+ uint32_t EmitEditableImmediate(const byte immediate); |
+ void EditImmediate(uint32_t offset, const byte immediate); |
+ void Exported(uint8_t flag); |
+ void External(uint8_t flag); |
+ WasmFunctionEncoder* Build(Zone* zone, WasmModuleBuilder* mb) const; |
+ |
+ private: |
+ WasmFunctionBuilder(Zone* zone, const unsigned char* name, int name_length); |
+ friend class WasmModuleBuilder; |
+ LocalType return_type_; |
+ struct Type; |
+ ZoneVector<Type> locals_; |
+ uint8_t exported_; |
+ uint8_t external_; |
+ ZoneVector<uint8_t> body_; |
+ ZoneVector<uint32_t> local_indices_; |
+ ZoneVector<char> name_; |
+ uint16_t AddVar(LocalType type, bool param); |
+ void IndexVars(WasmFunctionEncoder* e, uint16_t* var_index) const; |
+}; |
+ |
+class WasmDataSegmentEncoder : public ZoneObject { |
+ public: |
+ WasmDataSegmentEncoder(Zone* zone, const byte* data, uint32_t size, |
+ uint32_t dest); |
+ uint32_t HeaderSize() const; |
+ uint32_t BodySize() const; |
+ void Serialize(byte* buffer, byte** header, byte** body) const; |
+ |
+ private: |
+ ZoneVector<byte> data_; |
+ uint32_t dest_; |
+}; |
+ |
+class WasmModuleIndex : public ZoneObject { |
+ public: |
+ const byte* Begin() const { return begin_; } |
+ const byte* End() const { return end_; } |
+ |
+ private: |
+ friend class WasmModuleWriter; |
+ WasmModuleIndex(const byte* begin, const byte* end) |
+ : begin_(begin), end_(end) {} |
+ const byte* begin_; |
+ const byte* end_; |
+}; |
+ |
+class WasmModuleWriter : public ZoneObject { |
+ public: |
+ WasmModuleIndex* WriteTo(Zone* zone) const; |
+ |
+ private: |
+ friend class WasmModuleBuilder; |
+ explicit WasmModuleWriter(Zone* zone); |
+ ZoneVector<WasmFunctionEncoder*> functions_; |
+ ZoneVector<WasmDataSegmentEncoder*> data_segments_; |
+ ZoneVector<FunctionSig*> signatures_; |
+ ZoneVector<uint16_t> indirect_functions_; |
+ ZoneVector<std::pair<MachineType, bool>> globals_; |
+}; |
+ |
+class WasmModuleBuilder : public ZoneObject { |
+ public: |
+ explicit WasmModuleBuilder(Zone* zone); |
+ uint16_t AddFunction(const unsigned char* name = NULL, int name_length = 0); |
+ uint32_t AddGlobal(MachineType type, bool exported); |
+ WasmFunctionBuilder* FunctionAt(size_t index); |
+ void AddDataSegment(WasmDataSegmentEncoder* data); |
+ uint16_t AddSignature(FunctionSig* sig); |
+ void AddIndirectFunction(uint16_t index); |
+ WasmModuleWriter* Build(Zone* zone); |
+ |
+ private: |
+ struct CompareFunctionSigs { |
+ int operator()(FunctionSig* a, FunctionSig* b); |
+ }; |
+ typedef ZoneMap<FunctionSig*, uint16_t, CompareFunctionSigs> SignatureMap; |
+ |
+ Zone* zone_; |
+ ZoneVector<FunctionSig*> signatures_; |
+ ZoneVector<WasmFunctionBuilder*> functions_; |
+ ZoneVector<WasmDataSegmentEncoder*> data_segments_; |
+ ZoneVector<uint16_t> indirect_functions_; |
+ ZoneVector<std::pair<MachineType, bool>> globals_; |
+ SignatureMap signature_map_; |
+}; |
+ |
+std::vector<uint8_t> UnsignedLEB128From(uint32_t result); |
+} // namespace wasm |
+} // namespace internal |
+} // namespace v8 |
+ |
+#endif // V8_WASM_ENCODER_H_ |