| // 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_INTERPRETER_INTERPRETER_H_ |
| #define V8_INTERPRETER_INTERPRETER_H_ |
| |
| #include <memory> |
| |
| // Clients of this interface shouldn't depend on lots of interpreter internals. |
| // Do not include anything from src/interpreter other than |
| // src/interpreter/bytecodes.h here! |
| #include "src/base/macros.h" |
| #include "src/builtins/builtins.h" |
| #include "src/interpreter/bytecodes.h" |
| #include "src/parsing/token.h" |
| #include "src/runtime/runtime.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class Isolate; |
| class Callable; |
| class CompilationInfo; |
| class CompilationJob; |
| |
| namespace compiler { |
| class Node; |
| } // namespace compiler |
| |
| namespace interpreter { |
| |
| class InterpreterAssembler; |
| |
| class Interpreter { |
| public: |
| explicit Interpreter(Isolate* isolate); |
| virtual ~Interpreter() {} |
| |
| // Initializes the interpreter dispatch table. |
| void Initialize(); |
| |
| // Returns the interrupt budget which should be used for the profiler counter. |
| static int InterruptBudget(); |
| |
| // Creates a compilation job which will generate bytecode for |info|. |
| static CompilationJob* NewCompilationJob(CompilationInfo* info); |
| |
| // Return bytecode handler for |bytecode|. |
| Code* GetBytecodeHandler(Bytecode bytecode, OperandScale operand_scale); |
| |
| // GC support. |
| void IterateDispatchTable(ObjectVisitor* v); |
| |
| // Disassembler support (only useful with ENABLE_DISASSEMBLER defined). |
| void TraceCodegen(Handle<Code> code); |
| const char* LookupNameOfBytecodeHandler(Code* code); |
| |
| V8_EXPORT_PRIVATE Local<v8::Object> GetDispatchCountersObject(); |
| |
| Address dispatch_table_address() { |
| return reinterpret_cast<Address>(&dispatch_table_[0]); |
| } |
| |
| Address bytecode_dispatch_counters_table() { |
| return reinterpret_cast<Address>(bytecode_dispatch_counters_table_.get()); |
| } |
| |
| // TODO(ignition): Tune code size multiplier. |
| static const int kCodeSizeMultiplier = 32; |
| |
| private: |
| // Bytecode handler generator functions. |
| #define DECLARE_BYTECODE_HANDLER_GENERATOR(Name, ...) \ |
| void Do##Name(InterpreterAssembler* assembler); |
| BYTECODE_LIST(DECLARE_BYTECODE_HANDLER_GENERATOR) |
| #undef DECLARE_BYTECODE_HANDLER_GENERATOR |
| |
| // Generates code to perform the binary operation via |Generator|. |
| template <class Generator> |
| void DoBinaryOpWithFeedback(InterpreterAssembler* assembler); |
| |
| // Generates code to perform the comparison via |Generator| while gathering |
| // type feedback. |
| void DoCompareOpWithFeedback(Token::Value compare_op, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform the bitwise binary operation corresponding to |
| // |bitwise_op| while gathering type feedback. |
| void DoBitwiseBinaryOp(Token::Value bitwise_op, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform the binary operation via |Generator| using |
| // an immediate value rather the accumulator as the rhs operand. |
| template <class Generator> |
| void DoBinaryOpWithImmediate(InterpreterAssembler* assembler); |
| |
| // Generates code to perform the unary operation via |Generator| while |
| // gatering type feedback. |
| template <class Generator> |
| void DoUnaryOpWithFeedback(InterpreterAssembler* assembler); |
| |
| // Generates code to perform the comparison operation associated with |
| // |compare_op|. |
| void DoCompareOp(Token::Value compare_op, InterpreterAssembler* assembler); |
| |
| // Generates code to perform a global store via |ic|. |
| void DoStaGlobal(Callable ic, InterpreterAssembler* assembler); |
| |
| // Generates code to perform a named property store via |ic|. |
| void DoStoreIC(Callable ic, InterpreterAssembler* assembler); |
| |
| // Generates code to perform a keyed property store via |ic|. |
| void DoKeyedStoreIC(Callable ic, InterpreterAssembler* assembler); |
| |
| // Generates code to perform a JS call that collects type feedback. |
| void DoJSCall(InterpreterAssembler* assembler, TailCallMode tail_call_mode); |
| |
| // Generates code to perform delete via function_id. |
| void DoDelete(Runtime::FunctionId function_id, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform a lookup slot load via |function_id|. |
| void DoLdaLookupSlot(Runtime::FunctionId function_id, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform a lookup slot load via |function_id| that can |
| // fast path to a context slot load. |
| void DoLdaLookupContextSlot(Runtime::FunctionId function_id, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform a lookup slot load via |function_id| that can |
| // fast path to a global load. |
| void DoLdaLookupGlobalSlot(Runtime::FunctionId function_id, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform a lookup slot store depending on |
| // |language_mode|. |
| void DoStaLookupSlot(LanguageMode language_mode, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to load a context slot. |
| compiler::Node* BuildLoadContextSlot(InterpreterAssembler* assembler); |
| |
| // Generates code to load a global. |
| compiler::Node* BuildLoadGlobal(Callable ic, compiler::Node* context, |
| compiler::Node* feedback_slot, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to load a named property. |
| compiler::Node* BuildLoadNamedProperty(Callable ic, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to load a keyed property. |
| compiler::Node* BuildLoadKeyedProperty(Callable ic, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to prepare the result for ForInPrepare. Cache data |
| // are placed into the consecutive series of registers starting at |
| // |output_register|. |
| void BuildForInPrepareResult(compiler::Node* output_register, |
| compiler::Node* cache_type, |
| compiler::Node* cache_array, |
| compiler::Node* cache_length, |
| InterpreterAssembler* assembler); |
| |
| // Generates code to perform the unary operation via |callable|. |
| compiler::Node* BuildUnaryOp(Callable callable, |
| InterpreterAssembler* assembler); |
| |
| uintptr_t GetDispatchCounter(Bytecode from, Bytecode to) const; |
| |
| // Get dispatch table index of bytecode. |
| static size_t GetDispatchTableIndex(Bytecode bytecode, |
| OperandScale operand_scale); |
| |
| bool IsDispatchTableInitialized(); |
| bool ShouldInitializeDispatchTable(); |
| |
| static const int kNumberOfWideVariants = 3; |
| static const int kDispatchTableSize = kNumberOfWideVariants * (kMaxUInt8 + 1); |
| static const int kNumberOfBytecodes = static_cast<int>(Bytecode::kLast) + 1; |
| |
| Isolate* isolate_; |
| Address dispatch_table_[kDispatchTableSize]; |
| std::unique_ptr<uintptr_t[]> bytecode_dispatch_counters_table_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Interpreter); |
| }; |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_INTERPRETER_H_ |