/* * Copyright (C) 2008, 2012, 2013 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef JIT_h #define JIT_h #if ENABLE(JIT) // Verbose logging of code generation #define ENABLE_JIT_VERBOSE 0 // Verbose logging for OSR-related code. #define ENABLE_JIT_VERBOSE_OSR 0 // We've run into some problems where changing the size of the class JIT leads to // performance fluctuations. Try forcing alignment in an attempt to stabalize this. #if COMPILER(GCC) #define JIT_CLASS_ALIGNMENT __attribute__ ((aligned (32))) #else #define JIT_CLASS_ALIGNMENT #endif #define ASSERT_JIT_OFFSET(actual, expected) ASSERT_WITH_MESSAGE(actual == expected, "JIT Offset \"%s\" should be %d, not %d.\n", #expected, static_cast(expected), static_cast(actual)); #include "CodeBlock.h" #include "CompactJITCodeMap.h" #include "Interpreter.h" #include "JITDisassembler.h" #include "JSInterfaceJIT.h" #include "LegacyProfiler.h" #include "Opcode.h" #include "ResultType.h" #include "UnusedPointer.h" #include namespace JSC { class CodeBlock; class FunctionExecutable; class JIT; class JSPropertyNameIterator; class Interpreter; class JSScope; class JSStack; class MarkedAllocator; class Register; class StructureChain; struct CallLinkInfo; struct Instruction; struct OperandTypes; struct PolymorphicAccessStructureList; struct SimpleJumpTable; struct StringJumpTable; struct StructureStubInfo; struct CallRecord { MacroAssembler::Call from; unsigned bytecodeOffset; void* to; CallRecord() { } CallRecord(MacroAssembler::Call from, unsigned bytecodeOffset, void* to = 0) : from(from) , bytecodeOffset(bytecodeOffset) , to(to) { } }; struct JumpTable { MacroAssembler::Jump from; unsigned toBytecodeOffset; JumpTable(MacroAssembler::Jump f, unsigned t) : from(f) , toBytecodeOffset(t) { } }; struct SlowCaseEntry { MacroAssembler::Jump from; unsigned to; unsigned hint; SlowCaseEntry(MacroAssembler::Jump f, unsigned t, unsigned h = 0) : from(f) , to(t) , hint(h) { } }; struct SwitchRecord { enum Type { Immediate, Character, String }; Type type; union { SimpleJumpTable* simpleJumpTable; StringJumpTable* stringJumpTable; } jumpTable; unsigned bytecodeOffset; unsigned defaultOffset; SwitchRecord(SimpleJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset, Type type) : type(type) , bytecodeOffset(bytecodeOffset) , defaultOffset(defaultOffset) { this->jumpTable.simpleJumpTable = jumpTable; } SwitchRecord(StringJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset) : type(String) , bytecodeOffset(bytecodeOffset) , defaultOffset(defaultOffset) { this->jumpTable.stringJumpTable = jumpTable; } }; enum PropertyStubGetById_T { PropertyStubGetById }; enum PropertyStubPutById_T { PropertyStubPutById }; struct PropertyStubCompilationInfo { enum Type { GetById, PutById } m_type; unsigned bytecodeIndex; MacroAssembler::Call callReturnLocation; MacroAssembler::Label hotPathBegin; MacroAssembler::DataLabelPtr getStructureToCompare; MacroAssembler::PatchableJump getStructureCheck; MacroAssembler::ConvertibleLoadLabel propertyStorageLoad; #if USE(JSVALUE64) MacroAssembler::DataLabelCompact getDisplacementLabel; #else MacroAssembler::DataLabelCompact getDisplacementLabel1; MacroAssembler::DataLabelCompact getDisplacementLabel2; #endif MacroAssembler::Label getPutResult; MacroAssembler::Label getColdPathBegin; MacroAssembler::DataLabelPtr putStructureToCompare; #if USE(JSVALUE64) MacroAssembler::DataLabel32 putDisplacementLabel; #else MacroAssembler::DataLabel32 putDisplacementLabel1; MacroAssembler::DataLabel32 putDisplacementLabel2; #endif #if !ASSERT_DISABLED PropertyStubCompilationInfo() : bytecodeIndex(std::numeric_limits::max()) { } #endif PropertyStubCompilationInfo( PropertyStubGetById_T, unsigned bytecodeIndex, MacroAssembler::Label hotPathBegin, MacroAssembler::DataLabelPtr structureToCompare, MacroAssembler::PatchableJump structureCheck, MacroAssembler::ConvertibleLoadLabel propertyStorageLoad, #if USE(JSVALUE64) MacroAssembler::DataLabelCompact displacementLabel, #else MacroAssembler::DataLabelCompact displacementLabel1, MacroAssembler::DataLabelCompact displacementLabel2, #endif MacroAssembler::Label putResult) : m_type(GetById) , bytecodeIndex(bytecodeIndex) , hotPathBegin(hotPathBegin) , getStructureToCompare(structureToCompare) , getStructureCheck(structureCheck) , propertyStorageLoad(propertyStorageLoad) #if USE(JSVALUE64) , getDisplacementLabel(displacementLabel) #else , getDisplacementLabel1(displacementLabel1) , getDisplacementLabel2(displacementLabel2) #endif , getPutResult(putResult) { } PropertyStubCompilationInfo( PropertyStubPutById_T, unsigned bytecodeIndex, MacroAssembler::Label hotPathBegin, MacroAssembler::DataLabelPtr structureToCompare, MacroAssembler::ConvertibleLoadLabel propertyStorageLoad, #if USE(JSVALUE64) MacroAssembler::DataLabel32 displacementLabel #else MacroAssembler::DataLabel32 displacementLabel1, MacroAssembler::DataLabel32 displacementLabel2 #endif ) : m_type(PutById) , bytecodeIndex(bytecodeIndex) , hotPathBegin(hotPathBegin) , propertyStorageLoad(propertyStorageLoad) , putStructureToCompare(structureToCompare) #if USE(JSVALUE64) , putDisplacementLabel(displacementLabel) #else , putDisplacementLabel1(displacementLabel1) , putDisplacementLabel2(displacementLabel2) #endif { } void slowCaseInfo(PropertyStubGetById_T, MacroAssembler::Label coldPathBegin, MacroAssembler::Call call) { ASSERT(m_type == GetById); callReturnLocation = call; getColdPathBegin = coldPathBegin; } void slowCaseInfo(PropertyStubPutById_T, MacroAssembler::Call call) { ASSERT(m_type == PutById); callReturnLocation = call; } void copyToStubInfo(StructureStubInfo& info, LinkBuffer &patchBuffer); }; struct ByValCompilationInfo { ByValCompilationInfo() { } ByValCompilationInfo(unsigned bytecodeIndex, MacroAssembler::PatchableJump badTypeJump, JITArrayMode arrayMode, MacroAssembler::Label doneTarget) : bytecodeIndex(bytecodeIndex) , badTypeJump(badTypeJump) , arrayMode(arrayMode) , doneTarget(doneTarget) { } unsigned bytecodeIndex; MacroAssembler::PatchableJump badTypeJump; JITArrayMode arrayMode; MacroAssembler::Label doneTarget; MacroAssembler::Label slowPathTarget; MacroAssembler::Call returnAddress; }; struct StructureStubCompilationInfo { MacroAssembler::DataLabelPtr hotPathBegin; MacroAssembler::Call hotPathOther; MacroAssembler::Call callReturnLocation; CallLinkInfo::CallType callType; unsigned bytecodeIndex; }; // Near calls can only be patched to other JIT code, regular calls can be patched to JIT code or relinked to stub functions. void ctiPatchNearCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction); void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction); void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, FunctionPtr newCalleeFunction); class JIT : private JSInterfaceJIT { friend class JITStubCall; friend struct PropertyStubCompilationInfo; using MacroAssembler::Jump; using MacroAssembler::JumpList; using MacroAssembler::Label; static const uintptr_t patchGetByIdDefaultStructure = unusedPointer; static const int patchGetByIdDefaultOffset = 0; // Magic number - initial offset cannot be representable as a signed 8bit value, or the X86Assembler // will compress the displacement, and we may not be able to fit a patched offset. static const int patchPutByIdDefaultOffset = 256; public: static JITCode compile(VM* vm, CodeBlock* codeBlock, JITCompilationEffort effort, CodePtr* functionEntryArityCheck = 0) { return JIT(vm, codeBlock).privateCompile(functionEntryArityCheck, effort); } static void compileClosureCall(VM* vm, CallLinkInfo* callLinkInfo, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr) { JIT jit(vm, callerCodeBlock); jit.m_bytecodeOffset = callLinkInfo->codeOrigin.bytecodeIndex; jit.privateCompileClosureCall(callLinkInfo, calleeCodeBlock, expectedStructure, expectedExecutable, codePtr); } static void compileGetByIdProto(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = stubInfo->bytecodeIndex; jit.privateCompileGetByIdProto(stubInfo, structure, prototypeStructure, ident, slot, cachedOffset, returnAddress, callFrame); } static void compileGetByIdSelfList(VM* vm, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = stubInfo->bytecodeIndex; jit.privateCompileGetByIdSelfList(stubInfo, polymorphicStructures, currentIndex, structure, ident, slot, cachedOffset); } static void compileGetByIdProtoList(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = stubInfo->bytecodeIndex; jit.privateCompileGetByIdProtoList(stubInfo, prototypeStructureList, currentIndex, structure, prototypeStructure, ident, slot, cachedOffset, callFrame); } static void compileGetByIdChainList(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = stubInfo->bytecodeIndex; jit.privateCompileGetByIdChainList(stubInfo, prototypeStructureList, currentIndex, structure, chain, count, ident, slot, cachedOffset, callFrame); } static void compileGetByIdChain(VM* vm, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = stubInfo->bytecodeIndex; jit.privateCompileGetByIdChain(stubInfo, structure, chain, count, ident, slot, cachedOffset, returnAddress, callFrame); } static void compilePutByIdTransition(VM* vm, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, PropertyOffset cachedOffset, StructureChain* chain, ReturnAddressPtr returnAddress, bool direct) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = stubInfo->bytecodeIndex; jit.privateCompilePutByIdTransition(stubInfo, oldStructure, newStructure, cachedOffset, chain, returnAddress, direct); } static void compileGetByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompileGetByVal(byValInfo, returnAddress, arrayMode); } static void compilePutByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompilePutByVal(byValInfo, returnAddress, arrayMode); } static CodeRef compileCTINativeCall(VM* vm, NativeFunction func) { if (!vm->canUseJIT()) { #if ENABLE(LLINT) return CodeRef::createLLIntCodeRef(llint_native_call_trampoline); #else return CodeRef(); #endif } JIT jit(vm, 0); return jit.privateCompileCTINativeCall(vm, func); } static void resetPatchGetById(RepatchBuffer&, StructureStubInfo*); static void resetPatchPutById(RepatchBuffer&, StructureStubInfo*); static void patchGetByIdSelf(CodeBlock*, StructureStubInfo*, Structure*, PropertyOffset cachedOffset, ReturnAddressPtr); static void patchPutByIdReplace(CodeBlock*, StructureStubInfo*, Structure*, PropertyOffset cachedOffset, ReturnAddressPtr, bool direct); static void compilePatchGetArrayLength(VM* vm, CodeBlock* codeBlock, ReturnAddressPtr returnAddress) { JIT jit(vm, codeBlock); #if ENABLE(DFG_JIT) // Force profiling to be enabled during stub generation. jit.m_canBeOptimized = true; jit.m_canBeOptimizedOrInlined = true; jit.m_shouldEmitProfiling = true; #endif // ENABLE(DFG_JIT) return jit.privateCompilePatchGetArrayLength(returnAddress); } static void linkFor(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, CodePtr, CallLinkInfo*, VM*, CodeSpecializationKind); static void linkSlowCall(CodeBlock* callerCodeBlock, CallLinkInfo*); private: JIT(VM*, CodeBlock* = 0); void privateCompileMainPass(); void privateCompileLinkPass(); void privateCompileSlowCases(); JITCode privateCompile(CodePtr* functionEntryArityCheck, JITCompilationEffort); void privateCompileClosureCall(CallLinkInfo*, CodeBlock* calleeCodeBlock, Structure*, ExecutableBase*, MacroAssemblerCodePtr); void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, ReturnAddressPtr, CallFrame*); void privateCompileGetByIdSelfList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset); void privateCompileGetByIdProtoList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, Structure* prototypeStructure, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, CallFrame*); void privateCompileGetByIdChainList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, StructureChain*, size_t count, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, CallFrame*); void privateCompileGetByIdChain(StructureStubInfo*, Structure*, StructureChain*, size_t count, const Identifier&, const PropertySlot&, PropertyOffset cachedOffset, ReturnAddressPtr, CallFrame*); void privateCompilePutByIdTransition(StructureStubInfo*, Structure*, Structure*, PropertyOffset cachedOffset, StructureChain*, ReturnAddressPtr, bool direct); void privateCompileGetByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode); void privateCompilePutByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode); Label privateCompileCTINativeCall(VM*, bool isConstruct = false); CodeRef privateCompileCTINativeCall(VM*, NativeFunction); void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress); static bool isDirectPutById(StructureStubInfo*); void addSlowCase(Jump); void addSlowCase(JumpList); void addSlowCase(); void addJump(Jump, int); void emitJumpSlowToHot(Jump, int); void compileOpCall(OpcodeID, Instruction*, unsigned callLinkInfoIndex); void compileOpCallSlowCase(OpcodeID, Instruction*, Vector::iterator&, unsigned callLinkInfoIndex); void compileLoadVarargs(Instruction*); void compileCallEval(); void compileCallEvalSlowCase(Vector::iterator&); enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq }; void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type); bool isOperandConstantImmediateDouble(unsigned src); void emitLoadDouble(int index, FPRegisterID value); void emitLoadInt32ToDouble(int index, FPRegisterID value); Jump emitJumpIfNotObject(RegisterID structureReg); Jump addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, RegisterID scratch); void addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, JumpList& failureCases, RegisterID scratch); void testPrototype(JSValue, JumpList& failureCases, StructureStubInfo*); enum WriteBarrierMode { UnconditionalWriteBarrier, ShouldFilterImmediates }; // value register in write barrier is used before any scratch registers // so may safely be the same as either of the scratch registers. void emitWriteBarrier(RegisterID owner, RegisterID valueTag, RegisterID scratch, RegisterID scratch2, WriteBarrierMode, WriteBarrierUseKind); void emitWriteBarrier(JSCell* owner, RegisterID value, RegisterID scratch, WriteBarrierMode, WriteBarrierUseKind); template // StructureType can be RegisterID or ImmPtr. void emitAllocateJSObject(RegisterID allocator, StructureType, RegisterID result, RegisterID scratch); #if ENABLE(VALUE_PROFILER) // This assumes that the value to profile is in regT0 and that regT3 is available for // scratch. void emitValueProfilingSite(ValueProfile*); void emitValueProfilingSite(unsigned bytecodeOffset); void emitValueProfilingSite(); #else void emitValueProfilingSite(unsigned) { } void emitValueProfilingSite() { } #endif void emitArrayProfilingSite(RegisterID structureAndIndexingType, RegisterID scratch, ArrayProfile*); void emitArrayProfilingSiteForBytecodeIndex(RegisterID structureAndIndexingType, RegisterID scratch, unsigned bytecodeIndex); void emitArrayProfileStoreToHoleSpecialCase(ArrayProfile*); void emitArrayProfileOutOfBoundsSpecialCase(ArrayProfile*); JITArrayMode chooseArrayMode(ArrayProfile*); // Property is in regT1, base is in regT0. regT2 contains indexing type. // Property is int-checked and zero extended. Base is cell checked. // Structure is already profiled. Returns the slow cases. Fall-through // case contains result in regT0, and it is not yet profiled. JumpList emitInt32GetByVal(Instruction* instruction, PatchableJump& badType) { return emitContiguousGetByVal(instruction, badType, Int32Shape); } JumpList emitDoubleGetByVal(Instruction*, PatchableJump& badType); JumpList emitContiguousGetByVal(Instruction*, PatchableJump& badType, IndexingType expectedShape = ContiguousShape); JumpList emitArrayStorageGetByVal(Instruction*, PatchableJump& badType); JumpList emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, const TypedArrayDescriptor&, size_t elementSize, TypedArraySignedness); JumpList emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, const TypedArrayDescriptor&, size_t elementSize); // Property is in regT0, base is in regT0. regT2 contains indecing type. // The value to store is not yet loaded. Property is int-checked and // zero-extended. Base is cell checked. Structure is already profiled. // returns the slow cases. JumpList emitInt32PutByVal(Instruction* currentInstruction, PatchableJump& badType) { return emitGenericContiguousPutByVal(currentInstruction, badType, Int32Shape); } JumpList emitDoublePutByVal(Instruction* currentInstruction, PatchableJump& badType) { return emitGenericContiguousPutByVal(currentInstruction, badType, DoubleShape); } JumpList emitContiguousPutByVal(Instruction* currentInstruction, PatchableJump& badType) { return emitGenericContiguousPutByVal(currentInstruction, badType); } JumpList emitGenericContiguousPutByVal(Instruction*, PatchableJump& badType, IndexingType indexingShape = ContiguousShape); JumpList emitArrayStoragePutByVal(Instruction*, PatchableJump& badType); JumpList emitIntTypedArrayPutByVal(Instruction*, PatchableJump& badType, const TypedArrayDescriptor&, size_t elementSize, TypedArraySignedness, TypedArrayRounding); JumpList emitFloatTypedArrayPutByVal(Instruction*, PatchableJump& badType, const TypedArrayDescriptor&, size_t elementSize); enum FinalObjectMode { MayBeFinal, KnownNotFinal }; #if USE(JSVALUE32_64) bool getOperandConstantImmediateInt(unsigned op1, unsigned op2, unsigned& op, int32_t& constant); void emitLoadTag(int index, RegisterID tag); void emitLoadPayload(int index, RegisterID payload); void emitLoad(const JSValue& v, RegisterID tag, RegisterID payload); void emitLoad(int index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitLoad2(int index1, RegisterID tag1, RegisterID payload1, int index2, RegisterID tag2, RegisterID payload2); void emitStore(int index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitStore(int index, const JSValue constant, RegisterID base = callFrameRegister); void emitStoreInt32(int index, RegisterID payload, bool indexIsInt32 = false); void emitStoreInt32(int index, TrustedImm32 payload, bool indexIsInt32 = false); void emitStoreAndMapInt32(int index, RegisterID tag, RegisterID payload, bool indexIsInt32, size_t opcodeLength); void emitStoreCell(int index, RegisterID payload, bool indexIsCell = false); void emitStoreBool(int index, RegisterID payload, bool indexIsBool = false); void emitStoreDouble(int index, FPRegisterID value); bool isLabeled(unsigned bytecodeOffset); void map(unsigned bytecodeOffset, int virtualRegisterIndex, RegisterID tag, RegisterID payload); void unmap(RegisterID); void unmap(); bool isMapped(int virtualRegisterIndex); bool getMappedPayload(int virtualRegisterIndex, RegisterID& payload); bool getMappedTag(int virtualRegisterIndex, RegisterID& tag); void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex); void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex, RegisterID tag); void compileGetByIdHotPath(Identifier*); void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier*, Vector::iterator&); void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, PropertyOffset cachedOffset); void compileGetDirectOffset(JSObject* base, RegisterID resultTag, RegisterID resultPayload, PropertyOffset cachedOffset); void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, RegisterID offset, FinalObjectMode = MayBeFinal); void compilePutDirectOffset(RegisterID base, RegisterID valueTag, RegisterID valuePayload, PropertyOffset cachedOffset); // Arithmetic opcode helpers void emitAdd32Constant(unsigned dst, unsigned op, int32_t constant, ResultType opType); void emitSub32Constant(unsigned dst, unsigned op, int32_t constant, ResultType opType); void emitBinaryDoubleOp(OpcodeID, unsigned dst, unsigned op1, unsigned op2, OperandTypes, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters = true, bool op2IsInRegisters = true); #if CPU(ARM_TRADITIONAL) // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 36; static const int sequenceGetByIdHotPathConstantSpace = 4; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 80; static const int sequenceGetByIdSlowCaseConstantSpace = 4; // sequencePutById static const int sequencePutByIdInstructionSpace = 36; static const int sequencePutByIdConstantSpace = 4; #elif CPU(SH4) // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 36; static const int sequenceGetByIdHotPathConstantSpace = 5; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 38; static const int sequenceGetByIdSlowCaseConstantSpace = 4; // sequencePutById static const int sequencePutByIdInstructionSpace = 36; static const int sequencePutByIdConstantSpace = 5; #endif #else // USE(JSVALUE32_64) /* This function is deprecated. */ void emitGetJITStubArg(unsigned argumentNumber, RegisterID dst); void emitGetVirtualRegister(int src, RegisterID dst); void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2); void emitPutVirtualRegister(unsigned dst, RegisterID from = regT0); void emitStoreCell(unsigned dst, RegisterID payload, bool /* only used in JSValue32_64 */ = false) { emitPutVirtualRegister(dst, payload); } int32_t getConstantOperandImmediateInt(unsigned src); void killLastResultRegister(); Jump emitJumpIfJSCell(RegisterID); Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg); Jump emitJumpIfImmediateInteger(RegisterID); Jump emitJumpIfNotImmediateInteger(RegisterID); Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfNotImmediateInteger(RegisterID); void emitJumpSlowCaseIfNotImmediateNumber(RegisterID); void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); void emitFastArithReTagImmediate(RegisterID src, RegisterID dest); void emitTagAsBoolImmediate(RegisterID reg); void compileBinaryArithOp(OpcodeID, unsigned dst, unsigned src1, unsigned src2, OperandTypes opi); void compileBinaryArithOpSlowCase(OpcodeID, Vector::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase); void compileGetByIdHotPath(int baseVReg, Identifier*); void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier*, Vector::iterator&); void compileGetDirectOffset(RegisterID base, RegisterID result, PropertyOffset cachedOffset); void compileGetDirectOffset(JSObject* base, RegisterID result, PropertyOffset cachedOffset); void compileGetDirectOffset(RegisterID base, RegisterID result, RegisterID offset, RegisterID scratch, FinalObjectMode = MayBeFinal); void compilePutDirectOffset(RegisterID base, RegisterID value, PropertyOffset cachedOffset); #endif // USE(JSVALUE32_64) #if (defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL) #define BEGIN_UNINTERRUPTED_SEQUENCE(name) do { beginUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace); } while (false) #define END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, dst) do { endUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace, dst); } while (false) #define END_UNINTERRUPTED_SEQUENCE(name) END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, 0) void beginUninterruptedSequence(int, int); void endUninterruptedSequence(int, int, int); #else #define BEGIN_UNINTERRUPTED_SEQUENCE(name) #define END_UNINTERRUPTED_SEQUENCE(name) #define END_UNINTERRUPTED_SEQUENCE_FOR_PUT(name, dst) #endif void emit_compareAndJump(OpcodeID, unsigned op1, unsigned op2, unsigned target, RelationalCondition); void emit_compareAndJumpSlow(unsigned op1, unsigned op2, unsigned target, DoubleCondition, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION), bool invert, Vector::iterator&); void emit_op_add(Instruction*); void emit_op_bitand(Instruction*); void emit_op_bitor(Instruction*); void emit_op_bitxor(Instruction*); void emit_op_call(Instruction*); void emit_op_call_eval(Instruction*); void emit_op_call_varargs(Instruction*); void emit_op_call_put_result(Instruction*); void emit_op_catch(Instruction*); void emit_op_construct(Instruction*); void emit_op_get_callee(Instruction*); void emit_op_create_this(Instruction*); void emit_op_convert_this(Instruction*); void emit_op_create_arguments(Instruction*); void emit_op_debug(Instruction*); void emit_op_del_by_id(Instruction*); void emit_op_div(Instruction*); void emit_op_end(Instruction*); void emit_op_enter(Instruction*); void emit_op_create_activation(Instruction*); void emit_op_eq(Instruction*); void emit_op_eq_null(Instruction*); void emit_op_get_by_id(Instruction*); void emit_op_get_arguments_length(Instruction*); void emit_op_get_by_val(Instruction*); void emit_op_get_argument_by_val(Instruction*); void emit_op_get_by_pname(Instruction*); void emit_op_init_lazy_reg(Instruction*); void emit_op_check_has_instance(Instruction*); void emit_op_instanceof(Instruction*); void emit_op_is_undefined(Instruction*); void emit_op_is_boolean(Instruction*); void emit_op_is_number(Instruction*); void emit_op_is_string(Instruction*); void emit_op_jeq_null(Instruction*); void emit_op_jfalse(Instruction*); void emit_op_jmp(Instruction*); void emit_op_jneq_null(Instruction*); void emit_op_jneq_ptr(Instruction*); void emit_op_jless(Instruction*); void emit_op_jlesseq(Instruction*); void emit_op_jgreater(Instruction*); void emit_op_jgreatereq(Instruction*); void emit_op_jnless(Instruction*); void emit_op_jnlesseq(Instruction*); void emit_op_jngreater(Instruction*); void emit_op_jngreatereq(Instruction*); void emit_op_jtrue(Instruction*); void emit_op_loop_hint(Instruction*); void emit_op_lshift(Instruction*); void emit_op_mod(Instruction*); void emit_op_mov(Instruction*); void emit_op_mul(Instruction*); void emit_op_negate(Instruction*); void emit_op_neq(Instruction*); void emit_op_neq_null(Instruction*); void emit_op_new_array(Instruction*); void emit_op_new_array_with_size(Instruction*); void emit_op_new_array_buffer(Instruction*); void emit_op_new_func(Instruction*); void emit_op_new_func_exp(Instruction*); void emit_op_new_object(Instruction*); void emit_op_new_regexp(Instruction*); void emit_op_get_pnames(Instruction*); void emit_op_next_pname(Instruction*); void emit_op_not(Instruction*); void emit_op_nstricteq(Instruction*); void emit_op_pop_scope(Instruction*); void emit_op_dec(Instruction*); void emit_op_inc(Instruction*); void emit_op_profile_did_call(Instruction*); void emit_op_profile_will_call(Instruction*); void emit_op_push_name_scope(Instruction*); void emit_op_push_with_scope(Instruction*); void emit_op_put_by_id(Instruction*); void emit_op_put_by_index(Instruction*); void emit_op_put_by_val(Instruction*); void emit_op_put_getter_setter(Instruction*); void emit_op_init_global_const(Instruction*); void emit_op_init_global_const_check(Instruction*); void emit_resolve_operations(ResolveOperations*, const int* base, const int* value); void emitSlow_link_resolve_operations(ResolveOperations*, Vector::iterator&); void emit_op_resolve(Instruction*); void emit_op_resolve_base(Instruction*); void emit_op_resolve_with_base(Instruction*); void emit_op_resolve_with_this(Instruction*); void emit_op_put_to_base(Instruction*); void emit_op_ret(Instruction*); void emit_op_ret_object_or_this(Instruction*); void emit_op_rshift(Instruction*); void emit_op_strcat(Instruction*); void emit_op_stricteq(Instruction*); void emit_op_sub(Instruction*); void emit_op_switch_char(Instruction*); void emit_op_switch_imm(Instruction*); void emit_op_switch_string(Instruction*); void emit_op_tear_off_activation(Instruction*); void emit_op_tear_off_arguments(Instruction*); void emit_op_throw(Instruction*); void emit_op_throw_static_error(Instruction*); void emit_op_to_number(Instruction*); void emit_op_to_primitive(Instruction*); void emit_op_unexpected_load(Instruction*); void emit_op_urshift(Instruction*); void emit_op_get_scoped_var(Instruction*); void emit_op_put_scoped_var(Instruction*); void emitSlow_op_add(Instruction*, Vector::iterator&); void emitSlow_op_bitand(Instruction*, Vector::iterator&); void emitSlow_op_bitor(Instruction*, Vector::iterator&); void emitSlow_op_bitxor(Instruction*, Vector::iterator&); void emitSlow_op_call(Instruction*, Vector::iterator&); void emitSlow_op_call_eval(Instruction*, Vector::iterator&); void emitSlow_op_call_varargs(Instruction*, Vector::iterator&); void emitSlow_op_construct(Instruction*, Vector::iterator&); void emitSlow_op_convert_this(Instruction*, Vector::iterator&); void emitSlow_op_create_this(Instruction*, Vector::iterator&); void emitSlow_op_div(Instruction*, Vector::iterator&); void emitSlow_op_eq(Instruction*, Vector::iterator&); void emitSlow_op_get_by_id(Instruction*, Vector::iterator&); void emitSlow_op_get_arguments_length(Instruction*, Vector::iterator&); void emitSlow_op_get_by_val(Instruction*, Vector::iterator&); void emitSlow_op_get_argument_by_val(Instruction*, Vector::iterator&); void emitSlow_op_get_by_pname(Instruction*, Vector::iterator&); void emitSlow_op_check_has_instance(Instruction*, Vector::iterator&); void emitSlow_op_instanceof(Instruction*, Vector::iterator&); void emitSlow_op_jfalse(Instruction*, Vector::iterator&); void emitSlow_op_jless(Instruction*, Vector::iterator&); void emitSlow_op_jlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jgreater(Instruction*, Vector::iterator&); void emitSlow_op_jgreatereq(Instruction*, Vector::iterator&); void emitSlow_op_jnless(Instruction*, Vector::iterator&); void emitSlow_op_jnlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jngreater(Instruction*, Vector::iterator&); void emitSlow_op_jngreatereq(Instruction*, Vector::iterator&); void emitSlow_op_jtrue(Instruction*, Vector::iterator&); void emitSlow_op_loop_hint(Instruction*, Vector::iterator&); void emitSlow_op_lshift(Instruction*, Vector::iterator&); void emitSlow_op_mod(Instruction*, Vector::iterator&); void emitSlow_op_mul(Instruction*, Vector::iterator&); void emitSlow_op_negate(Instruction*, Vector::iterator&); void emitSlow_op_neq(Instruction*, Vector::iterator&); void emitSlow_op_new_object(Instruction*, Vector::iterator&); void emitSlow_op_not(Instruction*, Vector::iterator&); void emitSlow_op_nstricteq(Instruction*, Vector::iterator&); void emitSlow_op_dec(Instruction*, Vector::iterator&); void emitSlow_op_inc(Instruction*, Vector::iterator&); void emitSlow_op_put_by_id(Instruction*, Vector::iterator&); void emitSlow_op_put_by_val(Instruction*, Vector::iterator&); void emitSlow_op_init_global_const_check(Instruction*, Vector::iterator&); void emitSlow_op_rshift(Instruction*, Vector::iterator&); void emitSlow_op_stricteq(Instruction*, Vector::iterator&); void emitSlow_op_sub(Instruction*, Vector::iterator&); void emitSlow_op_to_number(Instruction*, Vector::iterator&); void emitSlow_op_to_primitive(Instruction*, Vector::iterator&); void emitSlow_op_urshift(Instruction*, Vector::iterator&); void emitSlow_op_resolve(Instruction*, Vector::iterator&); void emitSlow_op_resolve_base(Instruction*, Vector::iterator&); void emitSlow_op_resolve_with_base(Instruction*, Vector::iterator&); void emitSlow_op_resolve_with_this(Instruction*, Vector::iterator&); void emitSlow_op_put_to_base(Instruction*, Vector::iterator&); void emitRightShift(Instruction*, bool isUnsigned); void emitRightShiftSlowCase(Instruction*, Vector::iterator&, bool isUnsigned); void emitInitRegister(unsigned dst); void emitPutIntToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry); void emitGetFromCallFrameHeaderPtr(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister); void emitGetFromCallFrameHeader32(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister); #if USE(JSVALUE64) void emitGetFromCallFrameHeader64(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister); #endif JSValue getConstantOperand(unsigned src); bool isOperandConstantImmediateInt(unsigned src); bool isOperandConstantImmediateChar(unsigned src); bool atJumpTarget(); Jump getSlowCase(Vector::iterator& iter) { return iter++->from; } void linkSlowCase(Vector::iterator& iter) { iter->from.link(this); ++iter; } void linkDummySlowCase(Vector::iterator& iter) { ASSERT(!iter->from.isSet()); ++iter; } void linkSlowCaseIfNotJSCell(Vector::iterator&, int virtualRegisterIndex); Jump checkStructure(RegisterID reg, Structure* structure); void restoreArgumentReferenceForTrampoline(); void updateTopCallFrame(); Call emitNakedCall(CodePtr function = CodePtr()); // Loads the character value of a single character string into dst. void emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures); #if ENABLE(DFG_JIT) void emitEnterOptimizationCheck(); #else void emitEnterOptimizationCheck() { } #endif #ifndef NDEBUG void printBytecodeOperandTypes(unsigned src1, unsigned src2); #endif #if ENABLE(SAMPLING_FLAGS) void setSamplingFlag(int32_t); void clearSamplingFlag(int32_t); #endif #if ENABLE(SAMPLING_COUNTERS) void emitCount(AbstractSamplingCounter&, int32_t = 1); #endif #if ENABLE(OPCODE_SAMPLING) void sampleInstruction(Instruction*, bool = false); #endif #if ENABLE(CODEBLOCK_SAMPLING) void sampleCodeBlock(CodeBlock*); #else void sampleCodeBlock(CodeBlock*) {} #endif #if ENABLE(DFG_JIT) bool canBeOptimized() { return m_canBeOptimized; } bool canBeOptimizedOrInlined() { return m_canBeOptimizedOrInlined; } bool shouldEmitProfiling() { return m_shouldEmitProfiling; } #else bool canBeOptimized() { return false; } bool canBeOptimizedOrInlined() { return false; } // Enables use of value profiler with tiered compilation turned off, // in which case all code gets profiled. bool shouldEmitProfiling() { return false; } #endif Interpreter* m_interpreter; VM* m_vm; CodeBlock* m_codeBlock; Vector m_calls; Vector