| // 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_COMPILER_INTERPRETER_ASSEMBLER_H_ |
| #define V8_COMPILER_INTERPRETER_ASSEMBLER_H_ |
| |
| // Clients of this interface shouldn't depend on lots of compiler internals. |
| // Do not include anything from src/compiler here! |
| #include "src/allocation.h" |
| #include "src/base/smart-pointers.h" |
| #include "src/builtins.h" |
| #include "src/frames.h" |
| #include "src/interpreter/bytecodes.h" |
| #include "src/unique.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| class Isolate; |
| class Zone; |
| |
| namespace compiler { |
| |
| class CallDescriptor; |
| class Graph; |
| class Node; |
| class Operator; |
| class RawMachineAssembler; |
| class Schedule; |
| |
| class InterpreterAssembler { |
| public: |
| InterpreterAssembler(Isolate* isolate, Zone* zone, |
| interpreter::Bytecode bytecode); |
| virtual ~InterpreterAssembler(); |
| |
| Handle<Code> GenerateCode(); |
| |
| // Returns the Idx immediate for bytecode operand |operand_index| in the |
| // current bytecode. |
| Node* BytecodeOperandIdx(int operand_index); |
| // Returns the Imm8 immediate for bytecode operand |operand_index| in the |
| // current bytecode. |
| Node* BytecodeOperandImm8(int operand_index); |
| // Returns the register index for bytecode operand |operand_index| in the |
| // current bytecode. |
| Node* BytecodeOperandReg(int operand_index); |
| |
| // Accumulator. |
| Node* GetAccumulator(); |
| void SetAccumulator(Node* value); |
| |
| // Loads from and stores to the interpreter register file. |
| Node* LoadRegister(Node* reg_index); |
| Node* StoreRegister(Node* value, Node* reg_index); |
| |
| // Constants. |
| Node* Int32Constant(int value); |
| Node* IntPtrConstant(intptr_t value); |
| Node* NumberConstant(double value); |
| Node* HeapConstant(Unique<HeapObject> object); |
| |
| // Tag and untag Smi values. |
| Node* SmiTag(Node* value); |
| Node* SmiUntag(Node* value); |
| |
| // Load constant at |index| in the constant pool. |
| Node* LoadConstantPoolEntry(Node* index); |
| |
| // Load a field from an object on the heap. |
| Node* LoadObjectField(Node* object, int offset); |
| |
| // Load |slot_index| from a context. |
| Node* LoadContextSlot(Node* context, int slot_index); |
| |
| // Load |slot_index| from the current context. |
| Node* LoadContextSlot(int slot_index); |
| |
| // Call JS builtin. |
| Node* CallJSBuiltin(int context_index, Node* receiver); |
| Node* CallJSBuiltin(int context_index, Node* receiver, Node* arg1); |
| |
| // Returns from the function. |
| void Return(); |
| |
| // Dispatch to the bytecode. |
| void Dispatch(); |
| |
| protected: |
| // Close the graph. |
| void End(); |
| |
| // Protected helpers (for testing) which delegate to RawMachineAssembler. |
| CallDescriptor* call_descriptor() const; |
| Graph* graph(); |
| |
| private: |
| // Returns a raw pointer to start of the register file on the stack. |
| Node* RegisterFileRawPointer(); |
| // Returns a tagged pointer to the current function's BytecodeArray object. |
| Node* BytecodeArrayTaggedPointer(); |
| // Returns the offset from the BytecodeArrayPointer of the current bytecode. |
| Node* BytecodeOffset(); |
| // Returns a raw pointer to first entry in the interpreter dispatch table. |
| Node* DispatchTableRawPointer(); |
| // Returns a tagged pointer to the current context. |
| Node* ContextTaggedPointer(); |
| |
| // Returns the offset of register |index| relative to RegisterFilePointer(). |
| Node* RegisterFrameOffset(Node* index); |
| |
| Node* SmiShiftBitsConstant(); |
| Node* BytecodeOperand(int operand_index); |
| Node* BytecodeOperandSignExtended(int operand_index); |
| |
| Node* CallJSBuiltin(int context_index, Node* receiver, Node** js_args, |
| int js_arg_count); |
| |
| // Returns BytecodeOffset() advanced by delta bytecodes. Note: this does not |
| // update BytecodeOffset() itself. |
| Node* Advance(int delta); |
| |
| // Sets the end node of the graph. |
| void SetEndInput(Node* input); |
| |
| // Private helpers which delegate to RawMachineAssembler. |
| Isolate* isolate(); |
| Schedule* schedule(); |
| Zone* zone(); |
| |
| interpreter::Bytecode bytecode_; |
| base::SmartPointer<RawMachineAssembler> raw_assembler_; |
| Node* end_node_; |
| Node* accumulator_; |
| bool code_generated_; |
| |
| DISALLOW_COPY_AND_ASSIGN(InterpreterAssembler); |
| }; |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_COMPILER_INTERPRETER_ASSEMBLER_H_ |