/* * Copyright (C) 2008 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 #include #if ENABLE(JIT) // 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 #include "CodeBlock.h" #include "Interpreter.h" #include "JITCode.h" #include "JITStubs.h" #include "Opcode.h" #include "RegisterFile.h" #include "MacroAssembler.h" #include "Profiler.h" #include #include #include namespace JSC { class CodeBlock; class JIT; class JSPropertyNameIterator; class Interpreter; class Register; class RegisterFile; class ScopeChainNode; class StructureChain; struct CallLinkInfo; struct Instruction; struct OperandTypes; struct PolymorphicAccessStructureList; struct SimpleJumpTable; struct StringJumpTable; struct StructureStubInfo; struct CallRecord { MacroAssembler::Call from; unsigned bytecodeIndex; void* to; CallRecord() { } CallRecord(MacroAssembler::Call from, unsigned bytecodeIndex, void* to = 0) : from(from) , bytecodeIndex(bytecodeIndex) , to(to) { } }; struct JumpTable { MacroAssembler::Jump from; unsigned toBytecodeIndex; JumpTable(MacroAssembler::Jump f, unsigned t) : from(f) , toBytecodeIndex(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 bytecodeIndex; unsigned defaultOffset; SwitchRecord(SimpleJumpTable* jumpTable, unsigned bytecodeIndex, unsigned defaultOffset, Type type) : type(type) , bytecodeIndex(bytecodeIndex) , defaultOffset(defaultOffset) { this->jumpTable.simpleJumpTable = jumpTable; } SwitchRecord(StringJumpTable* jumpTable, unsigned bytecodeIndex, unsigned defaultOffset) : type(String) , bytecodeIndex(bytecodeIndex) , defaultOffset(defaultOffset) { this->jumpTable.stringJumpTable = jumpTable; } }; struct PropertyStubCompilationInfo { MacroAssembler::Call callReturnLocation; MacroAssembler::Label hotPathBegin; }; struct StructureStubCompilationInfo { MacroAssembler::DataLabelPtr hotPathBegin; MacroAssembler::Call hotPathOther; MacroAssembler::Call callReturnLocation; }; struct MethodCallCompilationInfo { MethodCallCompilationInfo(unsigned propertyAccessIndex) : propertyAccessIndex(propertyAccessIndex) { } MacroAssembler::DataLabelPtr structureToCompare; unsigned propertyAccessIndex; }; // 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 MacroAssembler { friend class JITStubCall; using MacroAssembler::Jump; using MacroAssembler::JumpList; using MacroAssembler::Label; // NOTES: // // regT0 has two special meanings. The return value from a stub // call will always be in regT0, and by default (unless // a register is specified) emitPutVirtualRegister() will store // the value from regT0. // // regT3 is required to be callee-preserved. // // tempRegister2 is has no such dependencies. It is important that // on x86/x86-64 it is ecx for performance reasons, since the // MacroAssembler will need to plant register swaps if it is not - // however the code will still function correctly. #if PLATFORM(X86_64) static const RegisterID returnValueRegister = X86Registers::eax; static const RegisterID cachedResultRegister = X86Registers::eax; static const RegisterID firstArgumentRegister = X86Registers::edi; static const RegisterID timeoutCheckRegister = X86Registers::r12; static const RegisterID callFrameRegister = X86Registers::r13; static const RegisterID tagTypeNumberRegister = X86Registers::r14; static const RegisterID tagMaskRegister = X86Registers::r15; static const RegisterID regT0 = X86Registers::eax; static const RegisterID regT1 = X86Registers::edx; static const RegisterID regT2 = X86Registers::ecx; static const RegisterID regT3 = X86Registers::ebx; static const FPRegisterID fpRegT0 = X86Registers::xmm0; static const FPRegisterID fpRegT1 = X86Registers::xmm1; static const FPRegisterID fpRegT2 = X86Registers::xmm2; #elif PLATFORM(X86) static const RegisterID returnValueRegister = X86Registers::eax; static const RegisterID cachedResultRegister = X86Registers::eax; // On x86 we always use fastcall conventions = but on // OS X if might make more sense to just use regparm. static const RegisterID firstArgumentRegister = X86Registers::ecx; static const RegisterID timeoutCheckRegister = X86Registers::esi; static const RegisterID callFrameRegister = X86Registers::edi; static const RegisterID regT0 = X86Registers::eax; static const RegisterID regT1 = X86Registers::edx; static const RegisterID regT2 = X86Registers::ecx; static const RegisterID regT3 = X86Registers::ebx; static const FPRegisterID fpRegT0 = X86Registers::xmm0; static const FPRegisterID fpRegT1 = X86Registers::xmm1; static const FPRegisterID fpRegT2 = X86Registers::xmm2; #elif PLATFORM(ARM_THUMB2) static const RegisterID returnValueRegister = ARMRegisters::r0; static const RegisterID cachedResultRegister = ARMRegisters::r0; static const RegisterID firstArgumentRegister = ARMRegisters::r0; static const RegisterID regT0 = ARMRegisters::r0; static const RegisterID regT1 = ARMRegisters::r1; static const RegisterID regT2 = ARMRegisters::r2; static const RegisterID regT3 = ARMRegisters::r4; static const RegisterID callFrameRegister = ARMRegisters::r5; static const RegisterID timeoutCheckRegister = ARMRegisters::r6; static const FPRegisterID fpRegT0 = ARMRegisters::d0; static const FPRegisterID fpRegT1 = ARMRegisters::d1; static const FPRegisterID fpRegT2 = ARMRegisters::d2; #elif PLATFORM(ARM_TRADITIONAL) static const RegisterID returnValueRegister = ARMRegisters::r0; static const RegisterID cachedResultRegister = ARMRegisters::r0; static const RegisterID firstArgumentRegister = ARMRegisters::r0; static const RegisterID timeoutCheckRegister = ARMRegisters::r5; static const RegisterID callFrameRegister = ARMRegisters::r4; static const RegisterID ctiReturnRegister = ARMRegisters::r6; static const RegisterID regT0 = ARMRegisters::r0; static const RegisterID regT1 = ARMRegisters::r1; static const RegisterID regT2 = ARMRegisters::r2; // Callee preserved static const RegisterID regT3 = ARMRegisters::r7; static const RegisterID regS0 = ARMRegisters::S0; // Callee preserved static const RegisterID regS1 = ARMRegisters::S1; static const RegisterID regStackPtr = ARMRegisters::sp; static const RegisterID regLink = ARMRegisters::lr; static const FPRegisterID fpRegT0 = ARMRegisters::d0; static const FPRegisterID fpRegT1 = ARMRegisters::d1; static const FPRegisterID fpRegT2 = ARMRegisters::d2; #else #error "JIT not supported on this platform." #endif static const int patchGetByIdDefaultStructure = -1; // 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 patchGetByIdDefaultOffset = 256; public: static JITCode compile(JSGlobalData* globalData, CodeBlock* codeBlock) { return JIT(globalData, codeBlock).privateCompile(); } static void compileGetByIdProto(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, size_t cachedOffset, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdProto(stubInfo, structure, prototypeStructure, cachedOffset, returnAddress, callFrame); } static void compileGetByIdSelfList(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, size_t cachedOffset) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdSelfList(stubInfo, polymorphicStructures, currentIndex, structure, cachedOffset); } static void compileGetByIdProtoList(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, Structure* prototypeStructure, size_t cachedOffset) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdProtoList(stubInfo, prototypeStructureList, currentIndex, structure, prototypeStructure, cachedOffset, callFrame); } static void compileGetByIdChainList(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructureList, int currentIndex, Structure* structure, StructureChain* chain, size_t count, size_t cachedOffset) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdChainList(stubInfo, prototypeStructureList, currentIndex, structure, chain, count, cachedOffset, callFrame); } static void compileGetByIdChain(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, size_t cachedOffset, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdChain(stubInfo, structure, chain, count, cachedOffset, returnAddress, callFrame); } static void compilePutByIdTransition(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, size_t cachedOffset, StructureChain* chain, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); jit.privateCompilePutByIdTransition(stubInfo, oldStructure, newStructure, cachedOffset, chain, returnAddress); } static void compileCTIMachineTrampolines(JSGlobalData* globalData, RefPtr* executablePool, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk) { JIT jit(globalData); jit.privateCompileCTIMachineTrampolines(executablePool, globalData, ctiStringLengthTrampoline, ctiVirtualCallLink, ctiVirtualCall, ctiNativeCallThunk); } static void patchGetByIdSelf(CodeBlock* codeblock, StructureStubInfo*, Structure*, size_t cachedOffset, ReturnAddressPtr returnAddress); static void patchPutByIdReplace(CodeBlock* codeblock, StructureStubInfo*, Structure*, size_t cachedOffset, ReturnAddressPtr returnAddress); static void patchMethodCallProto(CodeBlock* codeblock, MethodCallLinkInfo&, JSFunction*, Structure*, JSObject*, ReturnAddressPtr); static void compilePatchGetArrayLength(JSGlobalData* globalData, CodeBlock* codeBlock, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); return jit.privateCompilePatchGetArrayLength(returnAddress); } static void linkCall(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, JITCode&, CallLinkInfo*, int callerArgCount, JSGlobalData*); static void unlinkCall(CallLinkInfo*); private: struct JSRInfo { DataLabelPtr storeLocation; Label target; JSRInfo(DataLabelPtr storeLocation, Label targetLocation) : storeLocation(storeLocation) , target(targetLocation) { } }; JIT(JSGlobalData*, CodeBlock* = 0); void privateCompileMainPass(); void privateCompileLinkPass(); void privateCompileSlowCases(); JITCode privateCompile(); void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, size_t cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame); void privateCompileGetByIdSelfList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, size_t cachedOffset); void privateCompileGetByIdProtoList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, Structure* prototypeStructure, size_t cachedOffset, CallFrame* callFrame); void privateCompileGetByIdChainList(StructureStubInfo*, PolymorphicAccessStructureList*, int, Structure*, StructureChain* chain, size_t count, size_t cachedOffset, CallFrame* callFrame); void privateCompileGetByIdChain(StructureStubInfo*, Structure*, StructureChain*, size_t count, size_t cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame); void privateCompilePutByIdTransition(StructureStubInfo*, Structure*, Structure*, size_t cachedOffset, StructureChain*, ReturnAddressPtr returnAddress); void privateCompileCTIMachineTrampolines(RefPtr* executablePool, JSGlobalData* data, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk); void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress); void addSlowCase(Jump); void addSlowCase(JumpList); void addJump(Jump, int); void emitJumpSlowToHot(Jump, int); void compileOpCall(OpcodeID, Instruction* instruction, unsigned callLinkInfoIndex); void compileOpCallVarargs(Instruction* instruction); void compileOpCallInitializeCallFrame(); void compileOpCallSetupArgs(Instruction*); void compileOpCallVarargsSetupArgs(Instruction*); void compileOpCallSlowCase(Instruction* instruction, Vector::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID); void compileOpCallVarargsSlowCase(Instruction* instruction, Vector::iterator& iter); void compileOpConstructSetupArgs(Instruction*); enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq }; void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type); #if USE(JSVALUE32_64) Address tagFor(unsigned index, RegisterID base = callFrameRegister); Address payloadFor(unsigned index, RegisterID base = callFrameRegister); Address addressFor(unsigned index, RegisterID base = callFrameRegister); bool getOperandConstantImmediateInt(unsigned op1, unsigned op2, unsigned& op, int32_t& constant); bool isOperandConstantImmediateDouble(unsigned src); void emitLoadTag(unsigned index, RegisterID tag); void emitLoadPayload(unsigned index, RegisterID payload); void emitLoad(const JSValue& v, RegisterID tag, RegisterID payload); void emitLoad(unsigned index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitLoad2(unsigned index1, RegisterID tag1, RegisterID payload1, unsigned index2, RegisterID tag2, RegisterID payload2); void emitLoadDouble(unsigned index, FPRegisterID value); void emitLoadInt32ToDouble(unsigned index, FPRegisterID value); void emitStore(unsigned index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitStore(unsigned index, const JSValue constant, RegisterID base = callFrameRegister); void emitStoreInt32(unsigned index, RegisterID payload, bool indexIsInt32 = false); void emitStoreInt32(unsigned index, Imm32 payload, bool indexIsInt32 = false); void emitStoreCell(unsigned index, RegisterID payload, bool indexIsCell = false); void emitStoreBool(unsigned index, RegisterID tag, bool indexIsBool = false); void emitStoreDouble(unsigned index, FPRegisterID value); bool isLabeled(unsigned bytecodeIndex); void map(unsigned bytecodeIndex, unsigned virtualRegisterIndex, RegisterID tag, RegisterID payload); void unmap(RegisterID); void unmap(); bool isMapped(unsigned virtualRegisterIndex); bool getMappedPayload(unsigned virtualRegisterIndex, RegisterID& payload); bool getMappedTag(unsigned virtualRegisterIndex, RegisterID& tag); void emitJumpSlowCaseIfNotJSCell(unsigned virtualRegisterIndex); void emitJumpSlowCaseIfNotJSCell(unsigned virtualRegisterIndex, RegisterID tag); void linkSlowCaseIfNotJSCell(Vector::iterator&, unsigned virtualRegisterIndex); #if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS) void compileGetByIdHotPath(); void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector::iterator& iter, bool isMethodCheck = false); #endif void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, Structure* structure, size_t cachedOffset); void compileGetDirectOffset(JSObject* base, RegisterID temp, RegisterID resultTag, RegisterID resultPayload, size_t cachedOffset); void compilePutDirectOffset(RegisterID base, RegisterID valueTag, RegisterID valuePayload, Structure* structure, size_t 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 PLATFORM(X86) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 7; static const int patchOffsetPutByIdExternalLoad = 13; static const int patchLengthPutByIdExternalLoad = 3; static const int patchOffsetPutByIdPropertyMapOffset1 = 22; static const int patchOffsetPutByIdPropertyMapOffset2 = 28; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 7; static const int patchOffsetGetByIdBranchToSlowCase = 13; static const int patchOffsetGetByIdExternalLoad = 13; static const int patchLengthGetByIdExternalLoad = 3; static const int patchOffsetGetByIdPropertyMapOffset1 = 22; static const int patchOffsetGetByIdPropertyMapOffset2 = 28; static const int patchOffsetGetByIdPutResult = 28; #if ENABLE(OPCODE_SAMPLING) && USE(JIT_STUB_ARGUMENT_VA_LIST) static const int patchOffsetGetByIdSlowCaseCall = 35; #elif ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 37; #elif USE(JIT_STUB_ARGUMENT_VA_LIST) static const int patchOffsetGetByIdSlowCaseCall = 25; #else static const int patchOffsetGetByIdSlowCaseCall = 27; #endif static const int patchOffsetOpCallCompareToJump = 6; static const int patchOffsetMethodCheckProtoObj = 11; static const int patchOffsetMethodCheckProtoStruct = 18; static const int patchOffsetMethodCheckPutFunction = 29; #else #error "JSVALUE32_64 not supported on this platform." #endif #else // USE(JSVALUE32_64) void emitGetVirtualRegister(int src, RegisterID dst); void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2); void emitPutVirtualRegister(unsigned dst, RegisterID from = regT0); int32_t getConstantOperandImmediateInt(unsigned src); void emitGetVariableObjectRegister(RegisterID variableObject, int index, RegisterID dst); void emitPutVariableObjectRegister(RegisterID src, RegisterID variableObject, int index); void killLastResultRegister(); Jump emitJumpIfJSCell(RegisterID); Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfJSCell(RegisterID); Jump emitJumpIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg); #if USE(JSVALUE64) JIT::Jump emitJumpIfImmediateNumber(RegisterID); JIT::Jump emitJumpIfNotImmediateNumber(RegisterID); #else JIT::Jump emitJumpIfImmediateNumber(RegisterID reg) { return emitJumpIfImmediateInteger(reg); } JIT::Jump emitJumpIfNotImmediateNumber(RegisterID reg) { return emitJumpIfNotImmediateInteger(reg); } #endif JIT::Jump emitJumpIfImmediateInteger(RegisterID); JIT::Jump emitJumpIfNotImmediateInteger(RegisterID); JIT::Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfNotImmediateInteger(RegisterID); void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); #if !USE(JSVALUE64) void emitFastArithDeTagImmediate(RegisterID); Jump emitFastArithDeTagImmediateJumpIfZero(RegisterID); #endif void emitFastArithReTagImmediate(RegisterID src, RegisterID dest); void emitFastArithImmToInt(RegisterID); void emitFastArithIntToImmNoCheck(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 opi); #if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS) void compileGetByIdHotPath(int resultVReg, int baseVReg, Identifier* ident, unsigned propertyAccessInstructionIndex); void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector::iterator& iter, bool isMethodCheck = false); #endif void compileGetDirectOffset(RegisterID base, RegisterID result, Structure* structure, size_t cachedOffset); void compileGetDirectOffset(JSObject* base, RegisterID temp, RegisterID result, size_t cachedOffset); void compilePutDirectOffset(RegisterID base, RegisterID value, Structure* structure, size_t cachedOffset); #if PLATFORM(X86_64) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 10; static const int patchOffsetPutByIdExternalLoad = 20; static const int patchLengthPutByIdExternalLoad = 4; static const int patchOffsetPutByIdPropertyMapOffset = 31; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 10; static const int patchOffsetGetByIdBranchToSlowCase = 20; static const int patchOffsetGetByIdExternalLoad = 20; static const int patchLengthGetByIdExternalLoad = 4; static const int patchOffsetGetByIdPropertyMapOffset = 31; static const int patchOffsetGetByIdPutResult = 31; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 63; #else static const int patchOffsetGetByIdSlowCaseCall = 41; #endif static const int patchOffsetOpCallCompareToJump = 9; static const int patchOffsetMethodCheckProtoObj = 20; static const int patchOffsetMethodCheckProtoStruct = 30; static const int patchOffsetMethodCheckPutFunction = 50; #elif PLATFORM(X86) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 7; static const int patchOffsetPutByIdExternalLoad = 13; static const int patchLengthPutByIdExternalLoad = 3; static const int patchOffsetPutByIdPropertyMapOffset = 22; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 7; static const int patchOffsetGetByIdBranchToSlowCase = 13; static const int patchOffsetGetByIdExternalLoad = 13; static const int patchLengthGetByIdExternalLoad = 3; static const int patchOffsetGetByIdPropertyMapOffset = 22; static const int patchOffsetGetByIdPutResult = 22; #if ENABLE(OPCODE_SAMPLING) && USE(JIT_STUB_ARGUMENT_VA_LIST) static const int patchOffsetGetByIdSlowCaseCall = 31; #elif ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 33; #elif USE(JIT_STUB_ARGUMENT_VA_LIST) static const int patchOffsetGetByIdSlowCaseCall = 21; #else static const int patchOffsetGetByIdSlowCaseCall = 23; #endif static const int patchOffsetOpCallCompareToJump = 6; static const int patchOffsetMethodCheckProtoObj = 11; static const int patchOffsetMethodCheckProtoStruct = 18; static const int patchOffsetMethodCheckPutFunction = 29; #elif PLATFORM(ARM_THUMB2) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 10; static const int patchOffsetPutByIdExternalLoad = 20; static const int patchLengthPutByIdExternalLoad = 12; static const int patchOffsetPutByIdPropertyMapOffset = 40; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 10; static const int patchOffsetGetByIdBranchToSlowCase = 20; static const int patchOffsetGetByIdExternalLoad = 20; static const int patchLengthGetByIdExternalLoad = 12; static const int patchOffsetGetByIdPropertyMapOffset = 40; static const int patchOffsetGetByIdPutResult = 44; #if ENABLE(OPCODE_SAMPLING) static const int patchOffsetGetByIdSlowCaseCall = 0; // FIMXE #else static const int patchOffsetGetByIdSlowCaseCall = 28; #endif static const int patchOffsetOpCallCompareToJump = 10; static const int patchOffsetMethodCheckProtoObj = 18; static const int patchOffsetMethodCheckProtoStruct = 28; static const int patchOffsetMethodCheckPutFunction = 46; #elif PLATFORM(ARM_TRADITIONAL) // These architecture specific value are used to enable patching - see comment on op_put_by_id. static const int patchOffsetPutByIdStructure = 4; static const int patchOffsetPutByIdExternalLoad = 16; static const int patchLengthPutByIdExternalLoad = 4; static const int patchOffsetPutByIdPropertyMapOffset = 20; // These architecture specific value are used to enable patching - see comment on op_get_by_id. static const int patchOffsetGetByIdStructure = 4; static const int patchOffsetGetByIdBranchToSlowCase = 16; static const int patchOffsetGetByIdExternalLoad = 16; static const int patchLengthGetByIdExternalLoad = 4; static const int patchOffsetGetByIdPropertyMapOffset = 20; static const int patchOffsetGetByIdPutResult = 28; #if ENABLE(OPCODE_SAMPLING) #error "OPCODE_SAMPLING is not yet supported" #else static const int patchOffsetGetByIdSlowCaseCall = 36; #endif static const int patchOffsetOpCallCompareToJump = 12; static const int patchOffsetMethodCheckProtoObj = 12; static const int patchOffsetMethodCheckProtoStruct = 20; static const int patchOffsetMethodCheckPutFunction = 32; #endif #endif // USE(JSVALUE32_64) #if PLATFORM(ARM_TRADITIONAL) // sequenceOpCall static const int sequenceOpCallInstructionSpace = 12; static const int sequenceOpCallConstantSpace = 2; // sequenceMethodCheck static const int sequenceMethodCheckInstructionSpace = 40; static const int sequenceMethodCheckConstantSpace = 6; // sequenceGetByIdHotPath static const int sequenceGetByIdHotPathInstructionSpace = 28; static const int sequenceGetByIdHotPathConstantSpace = 3; // sequenceGetByIdSlowCase static const int sequenceGetByIdSlowCaseInstructionSpace = 40; static const int sequenceGetByIdSlowCaseConstantSpace = 2; // sequencePutById static const int sequencePutByIdInstructionSpace = 28; static const int sequencePutByIdConstantSpace = 3; #endif #if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL #define BEGIN_UNINTERRUPTED_SEQUENCE(name) beginUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace) #define END_UNINTERRUPTED_SEQUENCE(name) endUninterruptedSequence(name ## InstructionSpace, name ## ConstantSpace) void beginUninterruptedSequence(int, int); void endUninterruptedSequence(int, int); #else #define BEGIN_UNINTERRUPTED_SEQUENCE(name) #define END_UNINTERRUPTED_SEQUENCE(name) #endif void emit_op_add(Instruction*); void emit_op_bitand(Instruction*); void emit_op_bitnot(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_catch(Instruction*); void emit_op_construct(Instruction*); void emit_op_construct_verify(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_enter_with_activation(Instruction*); void emit_op_eq(Instruction*); void emit_op_eq_null(Instruction*); void emit_op_get_by_id(Instruction*); void emit_op_get_by_val(Instruction*); void emit_op_get_global_var(Instruction*); void emit_op_get_scoped_var(Instruction*); void emit_op_init_arguments(Instruction*); void emit_op_instanceof(Instruction*); void emit_op_jeq_null(Instruction*); void emit_op_jfalse(Instruction*); void emit_op_jmp(Instruction*); void emit_op_jmp_scopes(Instruction*); void emit_op_jneq_null(Instruction*); void emit_op_jneq_ptr(Instruction*); void emit_op_jnless(Instruction*); void emit_op_jnlesseq(Instruction*); void emit_op_jsr(Instruction*); void emit_op_jtrue(Instruction*); void emit_op_load_varargs(Instruction*); void emit_op_loop(Instruction*); void emit_op_loop_if_less(Instruction*); void emit_op_loop_if_lesseq(Instruction*); void emit_op_loop_if_true(Instruction*); void emit_op_lshift(Instruction*); void emit_op_method_check(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_error(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_next_pname(Instruction*); void emit_op_not(Instruction*); void emit_op_nstricteq(Instruction*); void emit_op_pop_scope(Instruction*); void emit_op_post_dec(Instruction*); void emit_op_post_inc(Instruction*); void emit_op_pre_dec(Instruction*); void emit_op_pre_inc(Instruction*); void emit_op_profile_did_call(Instruction*); void emit_op_profile_will_call(Instruction*); void emit_op_push_new_scope(Instruction*); void emit_op_push_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(Instruction*); void emit_op_put_global_var(Instruction*); void emit_op_put_scoped_var(Instruction*); void emit_op_put_setter(Instruction*); void emit_op_resolve(Instruction*); void emit_op_resolve_base(Instruction*); void emit_op_resolve_global(Instruction*); void emit_op_resolve_skip(Instruction*); void emit_op_resolve_with_base(Instruction*); void emit_op_ret(Instruction*); void emit_op_rshift(Instruction*); void emit_op_sret(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_to_jsnumber(Instruction*); void emit_op_to_primitive(Instruction*); void emit_op_unexpected_load(Instruction*); void emitSlow_op_add(Instruction*, Vector::iterator&); void emitSlow_op_bitand(Instruction*, Vector::iterator&); void emitSlow_op_bitnot(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_construct_verify(Instruction*, Vector::iterator&); void emitSlow_op_convert_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_by_val(Instruction*, Vector::iterator&); void emitSlow_op_instanceof(Instruction*, Vector::iterator&); void emitSlow_op_jfalse(Instruction*, Vector::iterator&); void emitSlow_op_jnless(Instruction*, Vector::iterator&); void emitSlow_op_jnlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jtrue(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_less(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_lesseq(Instruction*, Vector::iterator&); void emitSlow_op_loop_if_true(Instruction*, Vector::iterator&); void emitSlow_op_lshift(Instruction*, Vector::iterator&); void emitSlow_op_method_check(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_not(Instruction*, Vector::iterator&); void emitSlow_op_nstricteq(Instruction*, Vector::iterator&); void emitSlow_op_post_dec(Instruction*, Vector::iterator&); void emitSlow_op_post_inc(Instruction*, Vector::iterator&); void emitSlow_op_pre_dec(Instruction*, Vector::iterator&); void emitSlow_op_pre_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_resolve_global(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_jsnumber(Instruction*, Vector::iterator&); void emitSlow_op_to_primitive(Instruction*, Vector::iterator&); /* These functions are deprecated: Please use JITStubCall instead. */ void emitPutJITStubArg(RegisterID src, unsigned argumentNumber); #if USE(JSVALUE32_64) void emitPutJITStubArg(RegisterID tag, RegisterID payload, unsigned argumentNumber); void emitPutJITStubArgFromVirtualRegister(unsigned src, unsigned argumentNumber, RegisterID scratch1, RegisterID scratch2); #else void emitPutJITStubArgFromVirtualRegister(unsigned src, unsigned argumentNumber, RegisterID scratch); #endif void emitPutJITStubArgConstant(unsigned value, unsigned argumentNumber); void emitPutJITStubArgConstant(void* value, unsigned argumentNumber); void emitGetJITStubArg(unsigned argumentNumber, RegisterID dst); void emitInitRegister(unsigned dst); void emitPutToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry entry); void emitPutImmediateToCallFrameHeader(void* value, RegisterFile::CallFrameHeaderEntry entry); void emitGetFromCallFrameHeaderPtr(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from = callFrameRegister); void emitGetFromCallFrameHeader32(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from = callFrameRegister); JSValue getConstantOperand(unsigned src); bool isOperandConstantImmediateInt(unsigned src); Jump getSlowCase(Vector::iterator& iter) { return iter++->from; } void linkSlowCase(Vector::iterator& iter) { iter->from.link(this); ++iter; } void linkSlowCaseIfNotJSCell(Vector::iterator&, int vReg); Jump checkStructure(RegisterID reg, Structure* structure); void restoreArgumentReference(); void restoreArgumentReferenceForTrampoline(); Call emitNakedCall(CodePtr function = CodePtr()); void preserveReturnAddressAfterCall(RegisterID); void restoreReturnAddressBeforeReturn(RegisterID); void restoreReturnAddressBeforeReturn(Address); void emitTimeoutCheck(); #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&, uint32_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 Interpreter* m_interpreter; JSGlobalData* m_globalData; CodeBlock* m_codeBlock; Vector m_calls; Vector