| // 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_BYTECODES_H_ |
| #define V8_INTERPRETER_BYTECODES_H_ |
| |
| #include <iosfwd> |
| |
| // Clients of this interface shouldn't depend on lots of interpreter internals. |
| // Do not include anything from src/interpreter here! |
| #include "src/utils.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| #define INVALID_OPERAND_TYPE_LIST(V) \ |
| V(None, OperandSize::kNone) |
| |
| #define REGISTER_INPUT_OPERAND_TYPE_LIST(V) \ |
| /* Byte operands. */ \ |
| V(MaybeReg8, OperandSize::kByte) \ |
| V(Reg8, OperandSize::kByte) \ |
| V(RegPair8, OperandSize::kByte) \ |
| /* Short operands. */ \ |
| V(MaybeReg16, OperandSize::kShort) \ |
| V(Reg16, OperandSize::kShort) \ |
| V(RegPair16, OperandSize::kShort) |
| |
| #define REGISTER_OUTPUT_OPERAND_TYPE_LIST(V) \ |
| /* Byte operands. */ \ |
| V(RegOut8, OperandSize::kByte) \ |
| V(RegOutPair8, OperandSize::kByte) \ |
| V(RegOutTriple8, OperandSize::kByte) \ |
| /* Short operands. */ \ |
| V(RegOut16, OperandSize::kShort) \ |
| V(RegOutPair16, OperandSize::kShort) \ |
| V(RegOutTriple16, OperandSize::kShort) |
| |
| #define SCALAR_OPERAND_TYPE_LIST(V) \ |
| /* Byte operands. */ \ |
| V(Idx8, OperandSize::kByte) \ |
| V(Imm8, OperandSize::kByte) \ |
| V(RegCount8, OperandSize::kByte) \ |
| /* Short operands. */ \ |
| V(Idx16, OperandSize::kShort) \ |
| V(RegCount16, OperandSize::kShort) |
| |
| #define REGISTER_OPERAND_TYPE_LIST(V) \ |
| REGISTER_INPUT_OPERAND_TYPE_LIST(V) \ |
| REGISTER_OUTPUT_OPERAND_TYPE_LIST(V) |
| |
| #define NON_REGISTER_OPERAND_TYPE_LIST(V) \ |
| INVALID_OPERAND_TYPE_LIST(V) \ |
| SCALAR_OPERAND_TYPE_LIST(V) |
| |
| // The list of operand types used by bytecodes. |
| #define OPERAND_TYPE_LIST(V) \ |
| NON_REGISTER_OPERAND_TYPE_LIST(V) \ |
| REGISTER_OPERAND_TYPE_LIST(V) |
| |
| // Define one debug break bytecode for each operands size. |
| #define DEBUG_BREAK_BYTECODE_LIST(V) \ |
| V(DebugBreak0, OperandType::kNone) \ |
| V(DebugBreak1, OperandType::kReg8) \ |
| V(DebugBreak2, OperandType::kReg16) \ |
| V(DebugBreak3, OperandType::kReg16, OperandType::kReg8) \ |
| V(DebugBreak4, OperandType::kReg16, OperandType::kReg16) \ |
| V(DebugBreak5, OperandType::kReg16, OperandType::kReg16, OperandType::kReg8) \ |
| V(DebugBreak6, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kReg16) \ |
| V(DebugBreak7, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kReg16, OperandType::kReg8) \ |
| V(DebugBreak8, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kReg16, OperandType::kReg16) |
| |
| // The list of bytecodes which are interpreted by the interpreter. |
| #define BYTECODE_LIST(V) \ |
| \ |
| /* Loading the accumulator */ \ |
| V(LdaZero, OperandType::kNone) \ |
| V(LdaSmi8, OperandType::kImm8) \ |
| V(LdaUndefined, OperandType::kNone) \ |
| V(LdaNull, OperandType::kNone) \ |
| V(LdaTheHole, OperandType::kNone) \ |
| V(LdaTrue, OperandType::kNone) \ |
| V(LdaFalse, OperandType::kNone) \ |
| V(LdaConstant, OperandType::kIdx8) \ |
| V(LdaConstantWide, OperandType::kIdx16) \ |
| \ |
| /* Globals */ \ |
| V(LdaGlobal, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(LdaGlobalInsideTypeof, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(LdaGlobalWide, OperandType::kIdx16, OperandType::kIdx16) \ |
| V(LdaGlobalInsideTypeofWide, OperandType::kIdx16, OperandType::kIdx16) \ |
| V(StaGlobalSloppy, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(StaGlobalStrict, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(StaGlobalSloppyWide, OperandType::kIdx16, OperandType::kIdx16) \ |
| V(StaGlobalStrictWide, OperandType::kIdx16, OperandType::kIdx16) \ |
| \ |
| /* Context operations */ \ |
| V(PushContext, OperandType::kReg8) \ |
| V(PopContext, OperandType::kReg8) \ |
| V(LdaContextSlot, OperandType::kReg8, OperandType::kIdx8) \ |
| V(StaContextSlot, OperandType::kReg8, OperandType::kIdx8) \ |
| V(LdaContextSlotWide, OperandType::kReg8, OperandType::kIdx16) \ |
| V(StaContextSlotWide, OperandType::kReg8, OperandType::kIdx16) \ |
| \ |
| /* Load-Store lookup slots */ \ |
| V(LdaLookupSlot, OperandType::kIdx8) \ |
| V(LdaLookupSlotInsideTypeof, OperandType::kIdx8) \ |
| V(LdaLookupSlotWide, OperandType::kIdx16) \ |
| V(LdaLookupSlotInsideTypeofWide, OperandType::kIdx16) \ |
| V(StaLookupSlotSloppy, OperandType::kIdx8) \ |
| V(StaLookupSlotStrict, OperandType::kIdx8) \ |
| V(StaLookupSlotSloppyWide, OperandType::kIdx16) \ |
| V(StaLookupSlotStrictWide, OperandType::kIdx16) \ |
| \ |
| /* Register-accumulator transfers */ \ |
| V(Ldar, OperandType::kReg8) \ |
| V(Star, OperandType::kRegOut8) \ |
| \ |
| /* Register-register transfers */ \ |
| V(Mov, OperandType::kReg8, OperandType::kRegOut8) \ |
| V(MovWide, OperandType::kReg16, OperandType::kRegOut16) \ |
| \ |
| /* LoadIC operations */ \ |
| V(LoadIC, OperandType::kReg8, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(KeyedLoadIC, OperandType::kReg8, OperandType::kIdx8) \ |
| V(LoadICWide, OperandType::kReg8, OperandType::kIdx16, OperandType::kIdx16) \ |
| V(KeyedLoadICWide, OperandType::kReg8, OperandType::kIdx16) \ |
| \ |
| /* StoreIC operations */ \ |
| V(StoreICSloppy, OperandType::kReg8, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(StoreICStrict, OperandType::kReg8, OperandType::kIdx8, OperandType::kIdx8) \ |
| V(KeyedStoreICSloppy, OperandType::kReg8, OperandType::kReg8, \ |
| OperandType::kIdx8) \ |
| V(KeyedStoreICStrict, OperandType::kReg8, OperandType::kReg8, \ |
| OperandType::kIdx8) \ |
| V(StoreICSloppyWide, OperandType::kReg8, OperandType::kIdx16, \ |
| OperandType::kIdx16) \ |
| V(StoreICStrictWide, OperandType::kReg8, OperandType::kIdx16, \ |
| OperandType::kIdx16) \ |
| V(KeyedStoreICSloppyWide, OperandType::kReg8, OperandType::kReg8, \ |
| OperandType::kIdx16) \ |
| V(KeyedStoreICStrictWide, OperandType::kReg8, OperandType::kReg8, \ |
| OperandType::kIdx16) \ |
| \ |
| /* Binary Operators */ \ |
| V(Add, OperandType::kReg8) \ |
| V(Sub, OperandType::kReg8) \ |
| V(Mul, OperandType::kReg8) \ |
| V(Div, OperandType::kReg8) \ |
| V(Mod, OperandType::kReg8) \ |
| V(BitwiseOr, OperandType::kReg8) \ |
| V(BitwiseXor, OperandType::kReg8) \ |
| V(BitwiseAnd, OperandType::kReg8) \ |
| V(ShiftLeft, OperandType::kReg8) \ |
| V(ShiftRight, OperandType::kReg8) \ |
| V(ShiftRightLogical, OperandType::kReg8) \ |
| \ |
| /* Unary Operators */ \ |
| V(Inc, OperandType::kNone) \ |
| V(Dec, OperandType::kNone) \ |
| V(LogicalNot, OperandType::kNone) \ |
| V(TypeOf, OperandType::kNone) \ |
| V(DeletePropertyStrict, OperandType::kReg8) \ |
| V(DeletePropertySloppy, OperandType::kReg8) \ |
| \ |
| /* Call operations */ \ |
| V(CallIC, OperandType::kReg8, OperandType::kReg8, OperandType::kRegCount8, \ |
| OperandType::kIdx8) \ |
| V(CallICWide, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kRegCount16, OperandType::kIdx16) \ |
| V(TailCallIC, OperandType::kReg8, OperandType::kReg8, \ |
| OperandType::kRegCount8, OperandType::kIdx8) \ |
| V(TailCallICWide, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kRegCount16, OperandType::kIdx16) \ |
| V(Call, OperandType::kReg8, OperandType::kReg8, OperandType::kRegCount8) \ |
| V(CallWide, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kRegCount16) \ |
| V(TailCall, OperandType::kReg8, OperandType::kReg8, OperandType::kRegCount8) \ |
| V(TailCallWide, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kRegCount16) \ |
| V(CallRuntime, OperandType::kIdx16, OperandType::kMaybeReg8, \ |
| OperandType::kRegCount8) \ |
| V(CallRuntimeWide, OperandType::kIdx16, OperandType::kMaybeReg16, \ |
| OperandType::kRegCount8) \ |
| V(CallRuntimeForPair, OperandType::kIdx16, OperandType::kMaybeReg8, \ |
| OperandType::kRegCount8, OperandType::kRegOutPair8) \ |
| V(CallRuntimeForPairWide, OperandType::kIdx16, OperandType::kMaybeReg16, \ |
| OperandType::kRegCount8, OperandType::kRegOutPair16) \ |
| V(CallJSRuntime, OperandType::kIdx16, OperandType::kReg8, \ |
| OperandType::kRegCount8) \ |
| V(CallJSRuntimeWide, OperandType::kIdx16, OperandType::kReg16, \ |
| OperandType::kRegCount16) \ |
| \ |
| /* New operator */ \ |
| V(New, OperandType::kReg8, OperandType::kMaybeReg8, OperandType::kRegCount8) \ |
| V(NewWide, OperandType::kReg16, OperandType::kMaybeReg16, \ |
| OperandType::kRegCount16) \ |
| \ |
| /* Test Operators */ \ |
| V(TestEqual, OperandType::kReg8) \ |
| V(TestNotEqual, OperandType::kReg8) \ |
| V(TestEqualStrict, OperandType::kReg8) \ |
| V(TestNotEqualStrict, OperandType::kReg8) \ |
| V(TestLessThan, OperandType::kReg8) \ |
| V(TestGreaterThan, OperandType::kReg8) \ |
| V(TestLessThanOrEqual, OperandType::kReg8) \ |
| V(TestGreaterThanOrEqual, OperandType::kReg8) \ |
| V(TestInstanceOf, OperandType::kReg8) \ |
| V(TestIn, OperandType::kReg8) \ |
| \ |
| /* Cast operators */ \ |
| V(ToName, OperandType::kNone) \ |
| V(ToNumber, OperandType::kNone) \ |
| V(ToObject, OperandType::kNone) \ |
| \ |
| /* Literals */ \ |
| V(CreateRegExpLiteral, OperandType::kIdx8, OperandType::kIdx8, \ |
| OperandType::kImm8) \ |
| V(CreateArrayLiteral, OperandType::kIdx8, OperandType::kIdx8, \ |
| OperandType::kImm8) \ |
| V(CreateObjectLiteral, OperandType::kIdx8, OperandType::kIdx8, \ |
| OperandType::kImm8) \ |
| V(CreateRegExpLiteralWide, OperandType::kIdx16, OperandType::kIdx16, \ |
| OperandType::kImm8) \ |
| V(CreateArrayLiteralWide, OperandType::kIdx16, OperandType::kIdx16, \ |
| OperandType::kImm8) \ |
| V(CreateObjectLiteralWide, OperandType::kIdx16, OperandType::kIdx16, \ |
| OperandType::kImm8) \ |
| \ |
| /* Closure allocation */ \ |
| V(CreateClosure, OperandType::kIdx8, OperandType::kImm8) \ |
| V(CreateClosureWide, OperandType::kIdx16, OperandType::kImm8) \ |
| \ |
| /* Arguments allocation */ \ |
| V(CreateMappedArguments, OperandType::kNone) \ |
| V(CreateUnmappedArguments, OperandType::kNone) \ |
| V(CreateRestParameter, OperandType::kNone) \ |
| \ |
| /* Control Flow */ \ |
| V(Jump, OperandType::kImm8) \ |
| V(JumpConstant, OperandType::kIdx8) \ |
| V(JumpConstantWide, OperandType::kIdx16) \ |
| V(JumpIfTrue, OperandType::kImm8) \ |
| V(JumpIfTrueConstant, OperandType::kIdx8) \ |
| V(JumpIfTrueConstantWide, OperandType::kIdx16) \ |
| V(JumpIfFalse, OperandType::kImm8) \ |
| V(JumpIfFalseConstant, OperandType::kIdx8) \ |
| V(JumpIfFalseConstantWide, OperandType::kIdx16) \ |
| V(JumpIfToBooleanTrue, OperandType::kImm8) \ |
| V(JumpIfToBooleanTrueConstant, OperandType::kIdx8) \ |
| V(JumpIfToBooleanTrueConstantWide, OperandType::kIdx16) \ |
| V(JumpIfToBooleanFalse, OperandType::kImm8) \ |
| V(JumpIfToBooleanFalseConstant, OperandType::kIdx8) \ |
| V(JumpIfToBooleanFalseConstantWide, OperandType::kIdx16) \ |
| V(JumpIfNull, OperandType::kImm8) \ |
| V(JumpIfNullConstant, OperandType::kIdx8) \ |
| V(JumpIfNullConstantWide, OperandType::kIdx16) \ |
| V(JumpIfUndefined, OperandType::kImm8) \ |
| V(JumpIfUndefinedConstant, OperandType::kIdx8) \ |
| V(JumpIfUndefinedConstantWide, OperandType::kIdx16) \ |
| V(JumpIfNotHole, OperandType::kImm8) \ |
| V(JumpIfNotHoleConstant, OperandType::kIdx8) \ |
| V(JumpIfNotHoleConstantWide, OperandType::kIdx16) \ |
| \ |
| /* Complex flow control For..in */ \ |
| V(ForInPrepare, OperandType::kRegOutTriple8) \ |
| V(ForInPrepareWide, OperandType::kRegOutTriple16) \ |
| V(ForInDone, OperandType::kReg8, OperandType::kReg8) \ |
| V(ForInNext, OperandType::kReg8, OperandType::kReg8, OperandType::kRegPair8) \ |
| V(ForInNextWide, OperandType::kReg16, OperandType::kReg16, \ |
| OperandType::kRegPair16) \ |
| V(ForInStep, OperandType::kReg8) \ |
| \ |
| /* Perform a stack guard check */ \ |
| V(StackCheck, OperandType::kNone) \ |
| \ |
| /* Non-local flow control */ \ |
| V(Throw, OperandType::kNone) \ |
| V(ReThrow, OperandType::kNone) \ |
| V(Return, OperandType::kNone) \ |
| \ |
| /* Debugger */ \ |
| V(Debugger, OperandType::kNone) \ |
| DEBUG_BREAK_BYTECODE_LIST(V) |
| |
| // Enumeration of the size classes of operand types used by bytecodes. |
| enum class OperandSize : uint8_t { |
| kNone = 0, |
| kByte = 1, |
| kShort = 2, |
| }; |
| |
| |
| // Enumeration of operand types used by bytecodes. |
| enum class OperandType : uint8_t { |
| #define DECLARE_OPERAND_TYPE(Name, _) k##Name, |
| OPERAND_TYPE_LIST(DECLARE_OPERAND_TYPE) |
| #undef DECLARE_OPERAND_TYPE |
| #define COUNT_OPERAND_TYPES(x, _) +1 |
| // The COUNT_OPERAND macro will turn this into kLast = -1 +1 +1... which will |
| // evaluate to the same value as the last operand. |
| kLast = -1 OPERAND_TYPE_LIST(COUNT_OPERAND_TYPES) |
| #undef COUNT_OPERAND_TYPES |
| }; |
| |
| |
| // Enumeration of interpreter bytecodes. |
| enum class Bytecode : uint8_t { |
| #define DECLARE_BYTECODE(Name, ...) k##Name, |
| BYTECODE_LIST(DECLARE_BYTECODE) |
| #undef DECLARE_BYTECODE |
| #define COUNT_BYTECODE(x, ...) +1 |
| // The COUNT_BYTECODE macro will turn this into kLast = -1 +1 +1... which will |
| // evaluate to the same value as the last real bytecode. |
| kLast = -1 BYTECODE_LIST(COUNT_BYTECODE) |
| #undef COUNT_BYTECODE |
| }; |
| |
| |
| // An interpreter Register which is located in the function's Register file |
| // in its stack-frame. Register hold parameters, this, and expression values. |
| class Register { |
| public: |
| explicit Register(int index = kInvalidIndex) : index_(index) {} |
| |
| int index() const { return index_; } |
| bool is_parameter() const { return index() < 0; } |
| bool is_valid() const { return index_ != kInvalidIndex; } |
| bool is_byte_operand() const; |
| bool is_short_operand() const; |
| |
| static Register FromParameterIndex(int index, int parameter_count); |
| int ToParameterIndex(int parameter_count) const; |
| static int MaxParameterIndex(); |
| static int MaxRegisterIndex(); |
| static int MaxRegisterIndexForByteOperand(); |
| |
| // Returns an invalid register. |
| static Register invalid_value() { return Register(); } |
| |
| // Returns the register for the function's closure object. |
| static Register function_closure(); |
| bool is_function_closure() const; |
| |
| // Returns the register which holds the current context object. |
| static Register current_context(); |
| bool is_current_context() const; |
| |
| // Returns the register for the incoming new target value. |
| static Register new_target(); |
| bool is_new_target() const; |
| |
| static Register FromOperand(uint8_t operand); |
| uint8_t ToOperand() const; |
| |
| static Register FromWideOperand(uint16_t operand); |
| uint16_t ToWideOperand() const; |
| |
| static Register FromRawOperand(uint32_t raw_operand); |
| uint32_t ToRawOperand() const; |
| |
| static bool AreContiguous(Register reg1, Register reg2, |
| Register reg3 = Register(), |
| Register reg4 = Register(), |
| Register reg5 = Register()); |
| |
| std::string ToString(int parameter_count); |
| |
| bool operator==(const Register& other) const { |
| return index() == other.index(); |
| } |
| bool operator!=(const Register& other) const { |
| return index() != other.index(); |
| } |
| bool operator<(const Register& other) const { |
| return index() < other.index(); |
| } |
| bool operator<=(const Register& other) const { |
| return index() <= other.index(); |
| } |
| bool operator>(const Register& other) const { |
| return index() > other.index(); |
| } |
| bool operator>=(const Register& other) const { |
| return index() >= other.index(); |
| } |
| |
| private: |
| static const int kInvalidIndex = kMaxInt; |
| |
| void* operator new(size_t size); |
| void operator delete(void* p); |
| |
| int index_; |
| }; |
| |
| |
| class Bytecodes { |
| public: |
| // Returns string representation of |bytecode|. |
| static const char* ToString(Bytecode bytecode); |
| |
| // Returns string representation of |operand_type|. |
| static const char* OperandTypeToString(OperandType operand_type); |
| |
| // Returns string representation of |operand_size|. |
| static const char* OperandSizeToString(OperandSize operand_size); |
| |
| // Returns byte value of bytecode. |
| static uint8_t ToByte(Bytecode bytecode); |
| |
| // Returns bytecode for |value|. |
| static Bytecode FromByte(uint8_t value); |
| |
| // Returns the number of operands expected by |bytecode|. |
| static int NumberOfOperands(Bytecode bytecode); |
| |
| // Returns the number of register operands expected by |bytecode|. |
| static int NumberOfRegisterOperands(Bytecode bytecode); |
| |
| // Returns the i-th operand of |bytecode|. |
| static OperandType GetOperandType(Bytecode bytecode, int i); |
| |
| // Returns the size of the i-th operand of |bytecode|. |
| static OperandSize GetOperandSize(Bytecode bytecode, int i); |
| |
| // Returns the offset of the i-th operand of |bytecode| relative to the start |
| // of the bytecode. |
| static int GetOperandOffset(Bytecode bytecode, int i); |
| |
| // Returns a zero-based bitmap of the register operand positions of |
| // |bytecode|. |
| static int GetRegisterOperandBitmap(Bytecode bytecode); |
| |
| // Returns a debug break bytecode with a matching operand size. |
| static Bytecode GetDebugBreak(Bytecode bytecode); |
| |
| // Returns the size of the bytecode including its operands. |
| static int Size(Bytecode bytecode); |
| |
| // Returns the size of |operand|. |
| static OperandSize SizeOfOperand(OperandType operand); |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // an immediate byte operand (OperandType::kImm8). |
| static bool IsConditionalJumpImmediate(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // a constant pool entry (OperandType::kIdx8). |
| static bool IsConditionalJumpConstant(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // a constant pool entry (OperandType::kIdx16). |
| static bool IsConditionalJumpConstantWide(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // any kind of operand. |
| static bool IsConditionalJump(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a jump or a conditional jump taking |
| // an immediate byte operand (OperandType::kImm8). |
| static bool IsJumpImmediate(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a jump or conditional jump taking a |
| // constant pool entry (OperandType::kIdx8). |
| static bool IsJumpConstant(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a jump or conditional jump taking a |
| // constant pool entry (OperandType::kIdx16). |
| static bool IsJumpConstantWide(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a jump or conditional jump taking |
| // any kind of operand. |
| static bool IsJump(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a conditional jump, a jump, or a return. |
| static bool IsJumpOrReturn(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a call or a constructor call. |
| static bool IsCallOrNew(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a call to the runtime. |
| static bool IsCallRuntime(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a debug break. |
| static bool IsDebugBreak(Bytecode bytecode); |
| |
| // Returns true if |operand_type| is a register index operand (kIdx8/kIdx16). |
| static bool IsIndexOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| represents an immediate. |
| static bool IsImmediateOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| is a register count operand |
| // (kRegCount8/kRegCount16). |
| static bool IsRegisterCountOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| is any type of register operand. |
| static bool IsRegisterOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| represents a register used as an input. |
| static bool IsRegisterInputOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| represents a register used as an output. |
| static bool IsRegisterOutputOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| is a maybe register operand |
| // (kMaybeReg8/kMaybeReg16). |
| static bool IsMaybeRegisterOperandType(OperandType operand_type); |
| |
| // Decode a single bytecode and operands to |os|. |
| static std::ostream& Decode(std::ostream& os, const uint8_t* bytecode_start, |
| int number_of_parameters); |
| |
| private: |
| DISALLOW_IMPLICIT_CONSTRUCTORS(Bytecodes); |
| }; |
| |
| std::ostream& operator<<(std::ostream& os, const Bytecode& bytecode); |
| std::ostream& operator<<(std::ostream& os, const OperandType& operand_type); |
| std::ostream& operator<<(std::ostream& os, const OperandSize& operand_type); |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_BYTECODES_H_ |
