| // 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 <cstdint> |
| #include <iosfwd> |
| #include <string> |
| |
| #include "src/globals.h" |
| #include "src/interpreter/bytecode-operands.h" |
| |
| // This interface and it's implementation are independent of the |
| // libv8_base library as they are used by the interpreter and the |
| // standalone mkpeephole table generator program. |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| // The list of bytecodes which are interpreted by the interpreter. |
| // Format is V(<bytecode>, <accumulator_use>, <operands>). |
| #define BYTECODE_LIST(V) \ |
| /* Extended width operands */ \ |
| V(Wide, AccumulatorUse::kNone) \ |
| V(ExtraWide, AccumulatorUse::kNone) \ |
| \ |
| /* Loading the accumulator */ \ |
| V(LdaZero, AccumulatorUse::kWrite) \ |
| V(LdaSmi, AccumulatorUse::kWrite, OperandType::kImm) \ |
| V(LdaUndefined, AccumulatorUse::kWrite) \ |
| V(LdaNull, AccumulatorUse::kWrite) \ |
| V(LdaTheHole, AccumulatorUse::kWrite) \ |
| V(LdaTrue, AccumulatorUse::kWrite) \ |
| V(LdaFalse, AccumulatorUse::kWrite) \ |
| V(LdaConstant, AccumulatorUse::kWrite, OperandType::kIdx) \ |
| \ |
| /* Globals */ \ |
| V(LdaGlobal, AccumulatorUse::kWrite, OperandType::kIdx, OperandType::kIdx) \ |
| V(LdaGlobalInsideTypeof, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kIdx) \ |
| V(StaGlobalSloppy, AccumulatorUse::kRead, OperandType::kIdx, \ |
| OperandType::kIdx) \ |
| V(StaGlobalStrict, AccumulatorUse::kRead, OperandType::kIdx, \ |
| OperandType::kIdx) \ |
| \ |
| /* Context operations */ \ |
| V(PushContext, AccumulatorUse::kRead, OperandType::kRegOut) \ |
| V(PopContext, AccumulatorUse::kNone, OperandType::kReg) \ |
| V(LdaContextSlot, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaImmutableContextSlot, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaCurrentContextSlot, AccumulatorUse::kWrite, OperandType::kIdx) \ |
| V(LdaImmutableCurrentContextSlot, AccumulatorUse::kWrite, OperandType::kIdx) \ |
| V(StaContextSlot, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(StaCurrentContextSlot, AccumulatorUse::kRead, OperandType::kIdx) \ |
| \ |
| /* Load-Store lookup slots */ \ |
| V(LdaLookupSlot, AccumulatorUse::kWrite, OperandType::kIdx) \ |
| V(LdaLookupContextSlot, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupGlobalSlot, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupSlotInsideTypeof, AccumulatorUse::kWrite, OperandType::kIdx) \ |
| V(LdaLookupContextSlotInsideTypeof, AccumulatorUse::kWrite, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(LdaLookupGlobalSlotInsideTypeof, AccumulatorUse::kWrite, \ |
| OperandType::kIdx, OperandType::kIdx, OperandType::kUImm) \ |
| V(StaLookupSlotSloppy, AccumulatorUse::kReadWrite, OperandType::kIdx) \ |
| V(StaLookupSlotStrict, AccumulatorUse::kReadWrite, OperandType::kIdx) \ |
| \ |
| /* Register-accumulator transfers */ \ |
| V(Ldar, AccumulatorUse::kWrite, OperandType::kReg) \ |
| V(Star, AccumulatorUse::kRead, OperandType::kRegOut) \ |
| \ |
| /* Register-register transfers */ \ |
| V(Mov, AccumulatorUse::kNone, OperandType::kReg, OperandType::kRegOut) \ |
| \ |
| /* Property loads (LoadIC) operations */ \ |
| V(LdaNamedProperty, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| V(LdaKeyedProperty, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| \ |
| /* Operations on module variables */ \ |
| V(LdaModuleVariable, AccumulatorUse::kWrite, OperandType::kImm, \ |
| OperandType::kUImm) \ |
| V(StaModuleVariable, AccumulatorUse::kRead, OperandType::kImm, \ |
| OperandType::kUImm) \ |
| \ |
| /* Propery stores (StoreIC) operations */ \ |
| V(StaNamedPropertySloppy, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| V(StaNamedPropertyStrict, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| V(StaNamedOwnProperty, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| V(StaKeyedPropertySloppy, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(StaKeyedPropertyStrict, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(StaDataPropertyInLiteral, AccumulatorUse::kRead, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kFlag8, OperandType::kIdx) \ |
| V(CollectTypeProfile, AccumulatorUse::kRead, OperandType::kImm, \ |
| OperandType::kIdx) \ |
| \ |
| /* Binary Operators */ \ |
| V(Add, AccumulatorUse::kReadWrite, OperandType::kReg, OperandType::kIdx) \ |
| V(Sub, AccumulatorUse::kReadWrite, OperandType::kReg, OperandType::kIdx) \ |
| V(Mul, AccumulatorUse::kReadWrite, OperandType::kReg, OperandType::kIdx) \ |
| V(Div, AccumulatorUse::kReadWrite, OperandType::kReg, OperandType::kIdx) \ |
| V(Mod, AccumulatorUse::kReadWrite, OperandType::kReg, OperandType::kIdx) \ |
| V(BitwiseOr, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(BitwiseXor, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(BitwiseAnd, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(ShiftLeft, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(ShiftRight, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(ShiftRightLogical, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| \ |
| /* Binary operators with immediate operands */ \ |
| V(AddSmi, AccumulatorUse::kWrite, OperandType::kImm, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(SubSmi, AccumulatorUse::kWrite, OperandType::kImm, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(BitwiseOrSmi, AccumulatorUse::kWrite, OperandType::kImm, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(BitwiseAndSmi, AccumulatorUse::kWrite, OperandType::kImm, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(ShiftLeftSmi, AccumulatorUse::kWrite, OperandType::kImm, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(ShiftRightSmi, AccumulatorUse::kWrite, OperandType::kImm, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| \ |
| /* Unary Operators */ \ |
| V(Inc, AccumulatorUse::kReadWrite, OperandType::kIdx) \ |
| V(Dec, AccumulatorUse::kReadWrite, OperandType::kIdx) \ |
| V(ToBooleanLogicalNot, AccumulatorUse::kReadWrite) \ |
| V(LogicalNot, AccumulatorUse::kReadWrite) \ |
| V(TypeOf, AccumulatorUse::kReadWrite) \ |
| V(DeletePropertyStrict, AccumulatorUse::kReadWrite, OperandType::kReg) \ |
| V(DeletePropertySloppy, AccumulatorUse::kReadWrite, OperandType::kReg) \ |
| \ |
| /* GetSuperConstructor operator */ \ |
| V(GetSuperConstructor, AccumulatorUse::kRead, OperandType::kRegOut) \ |
| \ |
| /* Call operations */ \ |
| V(Call, AccumulatorUse::kWrite, OperandType::kReg, OperandType::kRegList, \ |
| OperandType::kRegCount, OperandType::kIdx) \ |
| V(Call0, AccumulatorUse::kWrite, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(Call1, AccumulatorUse::kWrite, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(Call2, AccumulatorUse::kWrite, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kIdx) \ |
| V(CallProperty, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \ |
| V(CallProperty0, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kIdx) \ |
| V(CallProperty1, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kIdx) \ |
| V(CallProperty2, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(CallWithSpread, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount) \ |
| V(TailCall, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \ |
| V(CallRuntime, AccumulatorUse::kWrite, OperandType::kRuntimeId, \ |
| OperandType::kRegList, OperandType::kRegCount) \ |
| V(CallRuntimeForPair, AccumulatorUse::kNone, OperandType::kRuntimeId, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kRegOutPair) \ |
| V(CallJSRuntime, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kRegList, OperandType::kRegCount) \ |
| \ |
| /* Intrinsics */ \ |
| V(InvokeIntrinsic, AccumulatorUse::kWrite, OperandType::kIntrinsicId, \ |
| OperandType::kRegList, OperandType::kRegCount) \ |
| \ |
| /* Construct operators */ \ |
| V(Construct, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount, OperandType::kIdx) \ |
| V(ConstructWithSpread, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kRegList, OperandType::kRegCount) \ |
| \ |
| /* Test Operators */ \ |
| V(TestEqual, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestEqualStrict, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestLessThan, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestGreaterThan, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestLessThanOrEqual, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestGreaterThanOrEqual, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| V(TestEqualStrictNoFeedback, AccumulatorUse::kReadWrite, OperandType::kReg) \ |
| V(TestInstanceOf, AccumulatorUse::kReadWrite, OperandType::kReg) \ |
| V(TestIn, AccumulatorUse::kReadWrite, OperandType::kReg) \ |
| V(TestUndetectable, AccumulatorUse::kWrite, OperandType::kReg) \ |
| V(TestNull, AccumulatorUse::kWrite, OperandType::kReg) \ |
| V(TestUndefined, AccumulatorUse::kWrite, OperandType::kReg) \ |
| V(TestTypeOf, AccumulatorUse::kReadWrite, OperandType::kFlag8) \ |
| \ |
| /* Cast operators */ \ |
| V(ToName, AccumulatorUse::kRead, OperandType::kRegOut) \ |
| V(ToNumber, AccumulatorUse::kRead, OperandType::kRegOut) \ |
| V(ToObject, AccumulatorUse::kRead, OperandType::kRegOut) \ |
| \ |
| /* Literals */ \ |
| V(CreateRegExpLiteral, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kFlag8) \ |
| V(CreateArrayLiteral, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kFlag8) \ |
| V(CreateObjectLiteral, AccumulatorUse::kNone, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kFlag8, OperandType::kRegOut) \ |
| \ |
| /* Closure allocation */ \ |
| V(CreateClosure, AccumulatorUse::kWrite, OperandType::kIdx, \ |
| OperandType::kIdx, OperandType::kFlag8) \ |
| \ |
| /* Context allocation */ \ |
| V(CreateBlockContext, AccumulatorUse::kReadWrite, OperandType::kIdx) \ |
| V(CreateCatchContext, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx, OperandType::kIdx) \ |
| V(CreateFunctionContext, AccumulatorUse::kWrite, OperandType::kUImm) \ |
| V(CreateEvalContext, AccumulatorUse::kWrite, OperandType::kUImm) \ |
| V(CreateWithContext, AccumulatorUse::kReadWrite, OperandType::kReg, \ |
| OperandType::kIdx) \ |
| \ |
| /* Arguments allocation */ \ |
| V(CreateMappedArguments, AccumulatorUse::kWrite) \ |
| V(CreateUnmappedArguments, AccumulatorUse::kWrite) \ |
| V(CreateRestParameter, AccumulatorUse::kWrite) \ |
| \ |
| /* Control Flow -- carefully ordered for efficient checks */ \ |
| /* - [Unconditional jumps] */ \ |
| V(JumpLoop, AccumulatorUse::kNone, OperandType::kUImm, OperandType::kImm) \ |
| /* - [Forward jumps] */ \ |
| V(Jump, AccumulatorUse::kNone, OperandType::kUImm) \ |
| /* - [Start constant jumps] */ \ |
| V(JumpConstant, AccumulatorUse::kNone, OperandType::kIdx) \ |
| /* - [Conditional jumps] */ \ |
| /* - [Conditional constant jumps] */ \ |
| V(JumpIfNullConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| V(JumpIfUndefinedConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| V(JumpIfTrueConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| V(JumpIfFalseConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| V(JumpIfJSReceiverConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| V(JumpIfNotHoleConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| /* - [Start ToBoolean jumps] */ \ |
| V(JumpIfToBooleanTrueConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| V(JumpIfToBooleanFalseConstant, AccumulatorUse::kRead, OperandType::kIdx) \ |
| /* - [End constant jumps] */ \ |
| /* - [Conditional immediate jumps] */ \ |
| V(JumpIfToBooleanTrue, AccumulatorUse::kRead, OperandType::kUImm) \ |
| V(JumpIfToBooleanFalse, AccumulatorUse::kRead, OperandType::kUImm) \ |
| /* - [End ToBoolean jumps] */ \ |
| V(JumpIfTrue, AccumulatorUse::kRead, OperandType::kUImm) \ |
| V(JumpIfFalse, AccumulatorUse::kRead, OperandType::kUImm) \ |
| V(JumpIfNull, AccumulatorUse::kRead, OperandType::kUImm) \ |
| V(JumpIfUndefined, AccumulatorUse::kRead, OperandType::kUImm) \ |
| V(JumpIfJSReceiver, AccumulatorUse::kRead, OperandType::kUImm) \ |
| V(JumpIfNotHole, AccumulatorUse::kRead, OperandType::kUImm) \ |
| \ |
| /* Complex flow control For..in */ \ |
| V(ForInPrepare, AccumulatorUse::kNone, OperandType::kReg, \ |
| OperandType::kRegOutTriple) \ |
| V(ForInContinue, AccumulatorUse::kWrite, OperandType::kReg, \ |
| OperandType::kReg) \ |
| V(ForInNext, AccumulatorUse::kWrite, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kRegPair, OperandType::kIdx) \ |
| V(ForInStep, AccumulatorUse::kWrite, OperandType::kReg) \ |
| \ |
| /* Perform a stack guard check */ \ |
| V(StackCheck, AccumulatorUse::kNone) \ |
| \ |
| /* Update the pending message */ \ |
| V(SetPendingMessage, AccumulatorUse::kReadWrite) \ |
| \ |
| /* Non-local flow control */ \ |
| V(Throw, AccumulatorUse::kRead) \ |
| V(ReThrow, AccumulatorUse::kRead) \ |
| V(Return, AccumulatorUse::kRead) \ |
| \ |
| /* Generators */ \ |
| V(SuspendGenerator, AccumulatorUse::kRead, OperandType::kReg) \ |
| V(ResumeGenerator, AccumulatorUse::kWrite, OperandType::kReg) \ |
| \ |
| /* Debugger */ \ |
| V(Debugger, AccumulatorUse::kNone) \ |
| \ |
| /* Debug Breakpoints - one for each possible size of unscaled bytecodes */ \ |
| /* and one for each operand widening prefix bytecode */ \ |
| V(DebugBreak0, AccumulatorUse::kRead) \ |
| V(DebugBreak1, AccumulatorUse::kRead, OperandType::kReg) \ |
| V(DebugBreak2, AccumulatorUse::kRead, OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreak3, AccumulatorUse::kRead, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kReg) \ |
| V(DebugBreak4, AccumulatorUse::kRead, OperandType::kReg, OperandType::kReg, \ |
| OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreak5, AccumulatorUse::kRead, OperandType::kRuntimeId, \ |
| OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreak6, AccumulatorUse::kRead, OperandType::kRuntimeId, \ |
| OperandType::kReg, OperandType::kReg, OperandType::kReg) \ |
| V(DebugBreakWide, AccumulatorUse::kRead) \ |
| V(DebugBreakExtraWide, AccumulatorUse::kRead) \ |
| \ |
| /* Illegal bytecode (terminates execution) */ \ |
| V(Illegal, AccumulatorUse::kNone) \ |
| \ |
| /* No operation (used to maintain source positions for peephole */ \ |
| /* eliminated bytecodes). */ \ |
| V(Nop, AccumulatorUse::kNone) |
| |
| // List of debug break bytecodes. |
| #define DEBUG_BREAK_PLAIN_BYTECODE_LIST(V) \ |
| V(DebugBreak0) \ |
| V(DebugBreak1) \ |
| V(DebugBreak2) \ |
| V(DebugBreak3) \ |
| V(DebugBreak4) \ |
| V(DebugBreak5) \ |
| V(DebugBreak6) |
| |
| #define DEBUG_BREAK_PREFIX_BYTECODE_LIST(V) \ |
| V(DebugBreakWide) \ |
| V(DebugBreakExtraWide) |
| |
| #define DEBUG_BREAK_BYTECODE_LIST(V) \ |
| DEBUG_BREAK_PLAIN_BYTECODE_LIST(V) \ |
| DEBUG_BREAK_PREFIX_BYTECODE_LIST(V) |
| |
| // Lists of jump bytecodes. |
| |
| #define JUMP_UNCONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| V(JumpLoop) \ |
| V(Jump) |
| |
| #define JUMP_UNCONDITIONAL_CONSTANT_BYTECODE_LIST(V) V(JumpConstant) |
| |
| #define JUMP_TOBOOLEAN_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| V(JumpIfToBooleanTrue) \ |
| V(JumpIfToBooleanFalse) |
| |
| #define JUMP_TOBOOLEAN_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| V(JumpIfToBooleanTrueConstant) \ |
| V(JumpIfToBooleanFalseConstant) |
| |
| #define JUMP_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| V(JumpIfTrue) \ |
| V(JumpIfFalse) \ |
| V(JumpIfNull) \ |
| V(JumpIfUndefined) \ |
| V(JumpIfJSReceiver) \ |
| V(JumpIfNotHole) |
| |
| #define JUMP_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| V(JumpIfNullConstant) \ |
| V(JumpIfUndefinedConstant) \ |
| V(JumpIfTrueConstant) \ |
| V(JumpIfFalseConstant) \ |
| V(JumpIfJSReceiverConstant) \ |
| V(JumpIfNotHoleConstant) |
| |
| #define JUMP_CONSTANT_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_CONSTANT_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) |
| |
| #define JUMP_TO_BOOLEAN_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_TOBOOLEAN_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_UNCONDITIONAL_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_UNCONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_CONDITIONAL_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_IMMEDIATE_BYTECODE_LIST(V) \ |
| JUMP_CONDITIONAL_CONSTANT_BYTECODE_LIST(V) |
| |
| #define JUMP_FORWARD_BYTECODE_LIST(V) \ |
| V(Jump) \ |
| V(JumpConstant) \ |
| JUMP_CONDITIONAL_BYTECODE_LIST(V) |
| |
| #define JUMP_BYTECODE_LIST(V) \ |
| JUMP_FORWARD_BYTECODE_LIST(V) \ |
| V(JumpLoop) |
| |
| // 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 |
| }; |
| |
| class V8_EXPORT_PRIVATE Bytecodes final { |
| public: |
| // The maximum number of operands a bytecode may have. |
| static const int kMaxOperands = 5; |
| |
| // Returns string representation of |bytecode|. |
| static const char* ToString(Bytecode bytecode); |
| |
| // Returns string representation of |bytecode|. |
| static std::string ToString(Bytecode bytecode, OperandScale operand_scale); |
| |
| // Returns byte value of bytecode. |
| static uint8_t ToByte(Bytecode bytecode) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| return static_cast<uint8_t>(bytecode); |
| } |
| |
| // Returns bytecode for |value|. |
| static Bytecode FromByte(uint8_t value) { |
| Bytecode bytecode = static_cast<Bytecode>(value); |
| DCHECK(bytecode <= Bytecode::kLast); |
| return bytecode; |
| } |
| |
| // Returns the prefix bytecode representing an operand scale to be |
| // applied to a a bytecode. |
| static Bytecode OperandScaleToPrefixBytecode(OperandScale operand_scale) { |
| switch (operand_scale) { |
| case OperandScale::kQuadruple: |
| return Bytecode::kExtraWide; |
| case OperandScale::kDouble: |
| return Bytecode::kWide; |
| default: |
| UNREACHABLE(); |
| return Bytecode::kIllegal; |
| } |
| } |
| |
| // Returns true if the operand scale requires a prefix bytecode. |
| static bool OperandScaleRequiresPrefixBytecode(OperandScale operand_scale) { |
| return operand_scale != OperandScale::kSingle; |
| } |
| |
| // Returns the scaling applied to scalable operands if bytecode is |
| // is a scaling prefix. |
| static OperandScale PrefixBytecodeToOperandScale(Bytecode bytecode) { |
| switch (bytecode) { |
| case Bytecode::kExtraWide: |
| case Bytecode::kDebugBreakExtraWide: |
| return OperandScale::kQuadruple; |
| case Bytecode::kWide: |
| case Bytecode::kDebugBreakWide: |
| return OperandScale::kDouble; |
| default: |
| UNREACHABLE(); |
| return OperandScale::kSingle; |
| } |
| } |
| |
| // Returns how accumulator is used by |bytecode|. |
| static AccumulatorUse GetAccumulatorUse(Bytecode bytecode) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| return kAccumulatorUse[static_cast<size_t>(bytecode)]; |
| } |
| |
| // Returns true if |bytecode| reads the accumulator. |
| static bool ReadsAccumulator(Bytecode bytecode) { |
| return BytecodeOperands::ReadsAccumulator(GetAccumulatorUse(bytecode)); |
| } |
| |
| // Returns true if |bytecode| writes the accumulator. |
| static bool WritesAccumulator(Bytecode bytecode) { |
| return BytecodeOperands::WritesAccumulator(GetAccumulatorUse(bytecode)); |
| } |
| |
| // Return true if |bytecode| writes the accumulator with a boolean value. |
| static bool WritesBooleanToAccumulator(Bytecode bytecode) { |
| switch (bytecode) { |
| case Bytecode::kLdaTrue: |
| case Bytecode::kLdaFalse: |
| case Bytecode::kToBooleanLogicalNot: |
| case Bytecode::kLogicalNot: |
| case Bytecode::kTestEqual: |
| case Bytecode::kTestEqualStrict: |
| case Bytecode::kTestLessThan: |
| case Bytecode::kTestLessThanOrEqual: |
| case Bytecode::kTestGreaterThan: |
| case Bytecode::kTestGreaterThanOrEqual: |
| case Bytecode::kTestInstanceOf: |
| case Bytecode::kTestIn: |
| case Bytecode::kTestEqualStrictNoFeedback: |
| case Bytecode::kTestUndetectable: |
| case Bytecode::kTestTypeOf: |
| case Bytecode::kForInContinue: |
| case Bytecode::kTestUndefined: |
| case Bytecode::kTestNull: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| // Return true if |bytecode| is an accumulator load without effects, |
| // e.g. LdaConstant, LdaTrue, Ldar. |
| static constexpr bool IsAccumulatorLoadWithoutEffects(Bytecode bytecode) { |
| return bytecode == Bytecode::kLdar || bytecode == Bytecode::kLdaZero || |
| bytecode == Bytecode::kLdaSmi || bytecode == Bytecode::kLdaNull || |
| bytecode == Bytecode::kLdaTrue || bytecode == Bytecode::kLdaFalse || |
| bytecode == Bytecode::kLdaUndefined || |
| bytecode == Bytecode::kLdaTheHole || |
| bytecode == Bytecode::kLdaConstant || |
| bytecode == Bytecode::kLdaContextSlot || |
| bytecode == Bytecode::kLdaCurrentContextSlot || |
| bytecode == Bytecode::kLdaImmutableContextSlot || |
| bytecode == Bytecode::kLdaImmutableCurrentContextSlot; |
| } |
| |
| // Return true if |bytecode| is a register load without effects, |
| // e.g. Mov, Star. |
| static constexpr bool IsRegisterLoadWithoutEffects(Bytecode bytecode) { |
| return bytecode == Bytecode::kMov || bytecode == Bytecode::kPopContext || |
| bytecode == Bytecode::kPushContext || bytecode == Bytecode::kStar; |
| } |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // an immediate byte operand (OperandType::kImm). |
| static constexpr bool IsConditionalJumpImmediate(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfToBooleanTrue && |
| bytecode <= Bytecode::kJumpIfNotHole; |
| } |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // a constant pool entry (OperandType::kIdx). |
| static constexpr bool IsConditionalJumpConstant(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfNullConstant && |
| bytecode <= Bytecode::kJumpIfToBooleanFalseConstant; |
| } |
| |
| // Returns true if the bytecode is a conditional jump taking |
| // any kind of operand. |
| static constexpr bool IsConditionalJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfNullConstant && |
| bytecode <= Bytecode::kJumpIfNotHole; |
| } |
| |
| // Returns true if the bytecode is an unconditional jump. |
| static constexpr bool IsUnconditionalJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpLoop && |
| bytecode <= Bytecode::kJumpConstant; |
| } |
| |
| // Returns true if the bytecode is a jump or a conditional jump taking |
| // an immediate byte operand (OperandType::kImm). |
| static constexpr bool IsJumpImmediate(Bytecode bytecode) { |
| return bytecode == Bytecode::kJump || bytecode == Bytecode::kJumpLoop || |
| IsConditionalJumpImmediate(bytecode); |
| } |
| |
| // Returns true if the bytecode is a jump or conditional jump taking a |
| // constant pool entry (OperandType::kIdx). |
| static constexpr bool IsJumpConstant(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpConstant && |
| bytecode <= Bytecode::kJumpIfToBooleanFalseConstant; |
| } |
| |
| // Returns true if the bytecode is a jump that internally coerces the |
| // accumulator to a boolean. |
| static constexpr bool IsJumpIfToBoolean(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpIfToBooleanTrueConstant && |
| bytecode <= Bytecode::kJumpIfToBooleanFalse; |
| } |
| |
| // Returns true if the bytecode is a jump or conditional jump taking |
| // any kind of operand. |
| static constexpr bool IsJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJumpLoop && |
| bytecode <= Bytecode::kJumpIfNotHole; |
| } |
| |
| // Returns true if the bytecode is a forward jump or conditional jump taking |
| // any kind of operand. |
| static constexpr bool IsForwardJump(Bytecode bytecode) { |
| return bytecode >= Bytecode::kJump && bytecode <= Bytecode::kJumpIfNotHole; |
| } |
| |
| // Returns true if the bytecode is a conditional jump, a jump, or a return. |
| static constexpr bool IsJumpOrReturn(Bytecode bytecode) { |
| return bytecode == Bytecode::kReturn || IsJump(bytecode); |
| } |
| |
| // Return true if |bytecode| is a jump without effects, |
| // e.g. any jump excluding those that include type coercion like |
| // JumpIfTrueToBoolean. |
| static constexpr bool IsJumpWithoutEffects(Bytecode bytecode) { |
| return IsJump(bytecode) && !IsJumpIfToBoolean(bytecode); |
| } |
| |
| // Returns true if |bytecode| has no effects. These bytecodes only manipulate |
| // interpreter frame state and will never throw. |
| static constexpr bool IsWithoutExternalSideEffects(Bytecode bytecode) { |
| return (IsAccumulatorLoadWithoutEffects(bytecode) || |
| IsRegisterLoadWithoutEffects(bytecode) || |
| bytecode == Bytecode::kNop || IsJumpWithoutEffects(bytecode)); |
| } |
| |
| // Returns true if the bytecode is Ldar or Star. |
| static constexpr bool IsLdarOrStar(Bytecode bytecode) { |
| return bytecode == Bytecode::kLdar || bytecode == Bytecode::kStar; |
| } |
| |
| // Returns true if |bytecode| puts a name in the accumulator. |
| static constexpr bool PutsNameInAccumulator(Bytecode bytecode) { |
| return bytecode == Bytecode::kTypeOf; |
| } |
| |
| // Returns true if the bytecode is a call or a constructor call. |
| static constexpr bool IsCallOrConstruct(Bytecode bytecode) { |
| return bytecode == Bytecode::kCall || bytecode == Bytecode::kCallProperty || |
| bytecode == Bytecode::kCall0 || |
| bytecode == Bytecode::kCallProperty0 || |
| bytecode == Bytecode::kCall1 || |
| bytecode == Bytecode::kCallProperty1 || |
| bytecode == Bytecode::kCall2 || |
| bytecode == Bytecode::kCallProperty2 || |
| bytecode == Bytecode::kTailCall || |
| bytecode == Bytecode::kConstruct || |
| bytecode == Bytecode::kCallWithSpread || |
| bytecode == Bytecode::kConstructWithSpread || |
| bytecode == Bytecode::kInvokeIntrinsic || |
| bytecode == Bytecode::kCallJSRuntime; |
| } |
| |
| // Returns true if the bytecode is a call to the runtime. |
| static constexpr bool IsCallRuntime(Bytecode bytecode) { |
| return bytecode == Bytecode::kCallRuntime || |
| bytecode == Bytecode::kCallRuntimeForPair || |
| bytecode == Bytecode::kInvokeIntrinsic; |
| } |
| |
| // Returns true if the bytecode is a scaling prefix bytecode. |
| static constexpr bool IsPrefixScalingBytecode(Bytecode bytecode) { |
| return bytecode == Bytecode::kExtraWide || bytecode == Bytecode::kWide || |
| bytecode == Bytecode::kDebugBreakExtraWide || |
| bytecode == Bytecode::kDebugBreakWide; |
| } |
| |
| // Returns the number of values which |bytecode| returns. |
| static constexpr size_t ReturnCount(Bytecode bytecode) { |
| return bytecode == Bytecode::kReturn ? 1 : 0; |
| } |
| |
| // Returns the number of operands expected by |bytecode|. |
| static int NumberOfOperands(Bytecode bytecode) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| return kOperandCount[static_cast<size_t>(bytecode)]; |
| } |
| |
| // Returns the i-th operand of |bytecode|. |
| static OperandType GetOperandType(Bytecode bytecode, int i) { |
| DCHECK_LE(bytecode, Bytecode::kLast); |
| DCHECK_LT(i, NumberOfOperands(bytecode)); |
| DCHECK_GE(i, 0); |
| return GetOperandTypes(bytecode)[i]; |
| } |
| |
| // Returns a pointer to an array of operand types terminated in |
| // OperandType::kNone. |
| static const OperandType* GetOperandTypes(Bytecode bytecode) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| return kOperandTypes[static_cast<size_t>(bytecode)]; |
| } |
| |
| static bool OperandIsScalableSignedByte(Bytecode bytecode, |
| int operand_index) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| return kOperandTypeInfos[static_cast<size_t>(bytecode)][operand_index] == |
| OperandTypeInfo::kScalableSignedByte; |
| } |
| |
| static bool OperandIsScalableUnsignedByte(Bytecode bytecode, |
| int operand_index) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| return kOperandTypeInfos[static_cast<size_t>(bytecode)][operand_index] == |
| OperandTypeInfo::kScalableUnsignedByte; |
| } |
| |
| static bool OperandIsScalable(Bytecode bytecode, int operand_index) { |
| return OperandIsScalableSignedByte(bytecode, operand_index) || |
| OperandIsScalableUnsignedByte(bytecode, operand_index); |
| } |
| |
| // Returns true if the bytecode has wider operand forms. |
| static bool IsBytecodeWithScalableOperands(Bytecode bytecode); |
| |
| // Returns the size of the i-th operand of |bytecode|. |
| static OperandSize GetOperandSize(Bytecode bytecode, int i, |
| OperandScale operand_scale) { |
| CHECK_LT(i, NumberOfOperands(bytecode)); |
| return GetOperandSizes(bytecode, operand_scale)[i]; |
| } |
| |
| // Returns the operand sizes of |bytecode| with scale |operand_scale|. |
| static const OperandSize* GetOperandSizes(Bytecode bytecode, |
| OperandScale operand_scale) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| DCHECK_GE(operand_scale, OperandScale::kSingle); |
| DCHECK_LE(operand_scale, OperandScale::kLast); |
| STATIC_ASSERT(static_cast<int>(OperandScale::kQuadruple) == 4 && |
| OperandScale::kLast == OperandScale::kQuadruple); |
| int scale_index = static_cast<int>(operand_scale) >> 1; |
| return kOperandSizes[static_cast<size_t>(bytecode)][scale_index]; |
| } |
| |
| // Returns the offset of the i-th operand of |bytecode| relative to the start |
| // of the bytecode. |
| static int GetOperandOffset(Bytecode bytecode, int i, |
| OperandScale operand_scale); |
| |
| // Returns the size of the bytecode including its operands for the |
| // given |operand_scale|. |
| static int Size(Bytecode bytecode, OperandScale operand_scale) { |
| DCHECK(bytecode <= Bytecode::kLast); |
| STATIC_ASSERT(static_cast<int>(OperandScale::kQuadruple) == 4 && |
| OperandScale::kLast == OperandScale::kQuadruple); |
| int scale_index = static_cast<int>(operand_scale) >> 1; |
| return kBytecodeSizes[static_cast<size_t>(bytecode)][scale_index]; |
| } |
| |
| // Returns a debug break bytecode to replace |bytecode|. |
| static Bytecode GetDebugBreak(Bytecode bytecode); |
| |
| // Returns the equivalent jump bytecode without the accumulator coercion. |
| static Bytecode GetJumpWithoutToBoolean(Bytecode bytecode); |
| |
| // Returns true if there is a call in the most-frequently executed path |
| // through the bytecode's handler. |
| static bool MakesCallAlongCriticalPath(Bytecode bytecode); |
| |
| // Returns true if the bytecode is a debug break. |
| static bool IsDebugBreak(Bytecode bytecode); |
| |
| // 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 the handler for |bytecode| should look ahead and inline a |
| // dispatch to a Star bytecode. |
| static bool IsStarLookahead(Bytecode bytecode, OperandScale operand_scale); |
| |
| // Returns the number of registers represented by a register operand. For |
| // instance, a RegPair represents two registers. Should not be called for |
| // kRegList which has a variable number of registers based on the following |
| // kRegCount operand. |
| static int GetNumberOfRegistersRepresentedBy(OperandType operand_type) { |
| switch (operand_type) { |
| case OperandType::kReg: |
| case OperandType::kRegOut: |
| return 1; |
| case OperandType::kRegPair: |
| case OperandType::kRegOutPair: |
| return 2; |
| case OperandType::kRegOutTriple: |
| return 3; |
| case OperandType::kRegList: |
| UNREACHABLE(); |
| return 0; |
| default: |
| return 0; |
| } |
| UNREACHABLE(); |
| return 0; |
| } |
| |
| // Returns the size of |operand| for |operand_scale|. |
| static OperandSize SizeOfOperand(OperandType operand, OperandScale scale); |
| |
| // Returns true if |operand_type| is a runtime-id operand (kRuntimeId). |
| static bool IsRuntimeIdOperandType(OperandType operand_type); |
| |
| // Returns true if |operand_type| is unsigned, false if signed. |
| static bool IsUnsignedOperandType(OperandType operand_type); |
| |
| // Returns true if a handler is generated for a bytecode at a given |
| // operand scale. All bytecodes have handlers at OperandScale::kSingle, |
| // but only bytecodes with scalable operands have handlers with larger |
| // OperandScale values. |
| static bool BytecodeHasHandler(Bytecode bytecode, OperandScale operand_scale); |
| |
| // Return the operand scale required to hold a signed operand with |value|. |
| static OperandScale ScaleForSignedOperand(int32_t value) { |
| if (value >= kMinInt8 && value <= kMaxInt8) { |
| return OperandScale::kSingle; |
| } else if (value >= kMinInt16 && value <= kMaxInt16) { |
| return OperandScale::kDouble; |
| } else { |
| return OperandScale::kQuadruple; |
| } |
| } |
| |
| // Return the operand scale required to hold an unsigned operand with |value|. |
| static OperandScale ScaleForUnsignedOperand(uint32_t value) { |
| if (value <= kMaxUInt8) { |
| return OperandScale::kSingle; |
| } else if (value <= kMaxUInt16) { |
| return OperandScale::kDouble; |
| } else { |
| return OperandScale::kQuadruple; |
| } |
| } |
| |
| // Return the operand size required to hold an unsigned operand with |value|. |
| static OperandSize SizeForUnsignedOperand(uint32_t value) { |
| if (value <= kMaxUInt8) { |
| return OperandSize::kByte; |
| } else if (value <= kMaxUInt16) { |
| return OperandSize::kShort; |
| } else { |
| return OperandSize::kQuad; |
| } |
| } |
| |
| private: |
| static const OperandType* const kOperandTypes[]; |
| static const OperandTypeInfo* const kOperandTypeInfos[]; |
| static const int kOperandCount[]; |
| static const int kNumberOfRegisterOperands[]; |
| static const AccumulatorUse kAccumulatorUse[]; |
| static const bool kIsScalable[]; |
| static const int kBytecodeSizes[][3]; |
| static const OperandSize* const kOperandSizes[][3]; |
| }; |
| |
| V8_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os, |
| const Bytecode& bytecode); |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_BYTECODES_H_ |
