X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/9bcd318d5fa2a38139c9651d263a06c797529333..ba379fdc102753d6be2c4d937058fe40257329fe:/jit/JIT.h diff --git a/jit/JIT.h b/jit/JIT.h index d13fbb5..040f842 100644 --- a/jit/JIT.h +++ b/jit/JIT.h @@ -27,68 +27,33 @@ #define JIT_h #include -#include #if ENABLE(JIT) -#define WTF_USE_CTI_REPATCH_PIC 1 +// 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 -#if PLATFORM(X86_64) -#define STUB_ARGS_offset 0x10 -#else -#define STUB_ARGS_offset 0x0C -#endif - -#define STUB_ARGS_code (STUB_ARGS_offset) -#define STUB_ARGS_registerFile (STUB_ARGS_offset + 1) -#define STUB_ARGS_callFrame (STUB_ARGS_offset + 2) -#define STUB_ARGS_exception (STUB_ARGS_offset + 3) -#define STUB_ARGS_profilerReference (STUB_ARGS_offset + 4) -#define STUB_ARGS_globalData (STUB_ARGS_offset + 5) - -#define ARG_callFrame static_cast(ARGS[STUB_ARGS_callFrame]) -#define ARG_registerFile static_cast(ARGS[STUB_ARGS_registerFile]) -#define ARG_exception static_cast(ARGS[STUB_ARGS_exception]) -#define ARG_profilerReference static_cast(ARGS[STUB_ARGS_profilerReference]) -#define ARG_globalData static_cast(ARGS[STUB_ARGS_globalData]) - -#define ARG_setCallFrame(newCallFrame) (ARGS[STUB_ARGS_callFrame] = (newCallFrame)) - -#define ARG_src1 JSValuePtr::decode(static_cast(ARGS[1])) -#define ARG_src2 JSValuePtr::decode(static_cast(ARGS[2])) -#define ARG_src3 JSValuePtr::decode(static_cast(ARGS[3])) -#define ARG_src4 JSValuePtr::decode(static_cast(ARGS[4])) -#define ARG_src5 JSValuePtr::decode(static_cast(ARGS[5])) -#define ARG_id1 static_cast(ARGS[1]) -#define ARG_id2 static_cast(ARGS[2]) -#define ARG_id3 static_cast(ARGS[3]) -#define ARG_id4 static_cast(ARGS[4]) -#define ARG_int1 static_cast(reinterpret_cast(ARGS[1])) -#define ARG_int2 static_cast(reinterpret_cast(ARGS[2])) -#define ARG_int3 static_cast(reinterpret_cast(ARGS[3])) -#define ARG_int4 static_cast(reinterpret_cast(ARGS[4])) -#define ARG_int5 static_cast(reinterpret_cast(ARGS[5])) -#define ARG_int6 static_cast(reinterpret_cast(ARGS[6])) -#define ARG_func1 static_cast(ARGS[1]) -#define ARG_funcexp1 static_cast(ARGS[1]) -#define ARG_regexp1 static_cast(ARGS[1]) -#define ARG_pni1 static_cast(ARGS[1]) -#define ARG_returnAddress2 static_cast(ARGS[2]) -#define ARG_codeBlock4 static_cast(ARGS[4]) - -#define STUB_RETURN_ADDRESS_SLOT (ARGS[-1]) - namespace JSC { class CodeBlock; + class JIT; class JSPropertyNameIterator; class Interpreter; class Register; @@ -104,16 +69,8 @@ namespace JSC { struct PolymorphicAccessStructureList; struct StructureStubInfo; - typedef JSValueEncodedAsPointer* (JIT_STUB *CTIHelper_j)(STUB_ARGS); - typedef JSObject* (JIT_STUB *CTIHelper_o)(STUB_ARGS); - typedef JSPropertyNameIterator* (JIT_STUB *CTIHelper_p)(STUB_ARGS); - typedef void (JIT_STUB *CTIHelper_v)(STUB_ARGS); - typedef void* (JIT_STUB *CTIHelper_s)(STUB_ARGS); - typedef int (JIT_STUB *CTIHelper_b)(STUB_ARGS); - typedef VoidPtrPair (JIT_STUB *CTIHelper_2)(STUB_ARGS); - struct CallRecord { - MacroAssembler::Jump from; + MacroAssembler::Call from; unsigned bytecodeIndex; void* to; @@ -121,7 +78,7 @@ namespace JSC { { } - CallRecord(MacroAssembler::Jump from, unsigned bytecodeIndex, void* to = 0) + CallRecord(MacroAssembler::Call from, unsigned bytecodeIndex, void* to = 0) : from(from) , bytecodeIndex(bytecodeIndex) , to(to) @@ -188,44 +145,105 @@ namespace JSC { }; struct PropertyStubCompilationInfo { - MacroAssembler::Jump callReturnLocation; + MacroAssembler::Call callReturnLocation; MacroAssembler::Label hotPathBegin; }; struct StructureStubCompilationInfo { MacroAssembler::DataLabelPtr hotPathBegin; - MacroAssembler::Jump hotPathOther; - MacroAssembler::Jump callReturnLocation; - MacroAssembler::Label coldPathOther; + MacroAssembler::Call hotPathOther; + MacroAssembler::Call callReturnLocation; }; - extern "C" { - JSValueEncodedAsPointer* ctiTrampoline( -#if PLATFORM(X86_64) - // FIXME: (bug #22910) this will force all arguments onto the stack (regparm(0) does not appear to have any effect). - // We can allow register passing here, and move the writes of these values into the trampoline. - void*, void*, void*, void*, void*, void*, -#endif - void* code, RegisterFile*, CallFrame*, JSValuePtr* exception, Profiler**, JSGlobalData*); - void ctiVMThrowTrampoline(); + struct MethodCallCompilationInfo { + MethodCallCompilationInfo(unsigned propertyAccessIndex) + : propertyAccessIndex(propertyAccessIndex) + { + } + + MacroAssembler::DataLabelPtr structureToCompare; + unsigned propertyAccessIndex; }; - void ctiSetReturnAddress(void** where, void* what); - void ctiPatchCallByReturnAddress(void* where, void* what); + // 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 = X86::eax; + static const RegisterID cachedResultRegister = X86::eax; + static const RegisterID firstArgumentRegister = X86::edi; + static const RegisterID timeoutCheckRegister = X86::r12; static const RegisterID callFrameRegister = X86::r13; static const RegisterID tagTypeNumberRegister = X86::r14; static const RegisterID tagMaskRegister = X86::r15; -#else + + static const RegisterID regT0 = X86::eax; + static const RegisterID regT1 = X86::edx; + static const RegisterID regT2 = X86::ecx; + static const RegisterID regT3 = X86::ebx; + + static const FPRegisterID fpRegT0 = X86::xmm0; + static const FPRegisterID fpRegT1 = X86::xmm1; + static const FPRegisterID fpRegT2 = X86::xmm2; +#elif PLATFORM(X86) + static const RegisterID returnValueRegister = X86::eax; + static const RegisterID cachedResultRegister = X86::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 = X86::ecx; + static const RegisterID timeoutCheckRegister = X86::esi; static const RegisterID callFrameRegister = X86::edi; + + static const RegisterID regT0 = X86::eax; + static const RegisterID regT1 = X86::edx; + static const RegisterID regT2 = X86::ecx; + static const RegisterID regT3 = X86::ebx; + + static const FPRegisterID fpRegT0 = X86::xmm0; + static const FPRegisterID fpRegT1 = X86::xmm1; + static const FPRegisterID fpRegT2 = X86::xmm2; +#elif PLATFORM_ARM_ARCH(7) + static const RegisterID returnValueRegister = ARM::r0; + static const RegisterID cachedResultRegister = ARM::r0; + static const RegisterID firstArgumentRegister = ARM::r0; + + static const RegisterID regT0 = ARM::r0; + static const RegisterID regT1 = ARM::r1; + static const RegisterID regT2 = ARM::r2; + static const RegisterID regT3 = ARM::r4; + + static const RegisterID callFrameRegister = ARM::r5; + static const RegisterID timeoutCheckRegister = ARM::r6; + + static const FPRegisterID fpRegT0 = ARM::d0; + static const FPRegisterID fpRegT1 = ARM::d1; + static const FPRegisterID fpRegT2 = ARM::d2; +#else + #error "JIT not supported on this platform." #endif static const int patchGetByIdDefaultStructure = -1; @@ -233,50 +251,6 @@ namespace JSC { // will compress the displacement, and we may not be able to fit a patched offset. static const int patchGetByIdDefaultOffset = 256; -#if USE(JIT_STUB_ARGUMENT_REGISTER) -#if PLATFORM(X86_64) - static const int ctiArgumentInitSize = 6; -#else - static const int ctiArgumentInitSize = 2; -#endif -#elif USE(JIT_STUB_ARGUMENT_STACK) - static const int ctiArgumentInitSize = 4; -#else // JIT_STUB_ARGUMENT_VA_LIST - static const int ctiArgumentInitSize = 0; -#endif - -#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 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 patchOffsetGetByIdPropertyMapOffset = 31; - static const int patchOffsetGetByIdPutResult = 31; -#if ENABLE(OPCODE_SAMPLING) - static const int patchOffsetGetByIdSlowCaseCall = 53 + ctiArgumentInitSize; -#else - static const int patchOffsetGetByIdSlowCaseCall = 30 + ctiArgumentInitSize; -#endif - static const int patchOffsetOpCallCompareToJump = 9; -#else - // These architecture specific value are used to enable patching - see comment on op_put_by_id. - static const int patchOffsetPutByIdStructure = 7; - 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 patchOffsetGetByIdPropertyMapOffset = 22; - static const int patchOffsetGetByIdPutResult = 22; -#if ENABLE(OPCODE_SAMPLING) - static const int patchOffsetGetByIdSlowCaseCall = 31 + ctiArgumentInitSize; -#else - static const int patchOffsetGetByIdSlowCaseCall = 21 + ctiArgumentInitSize; -#endif - static const int patchOffsetOpCallCompareToJump = 6; -#endif - public: static void compile(JSGlobalData* globalData, CodeBlock* codeBlock) { @@ -284,19 +258,12 @@ namespace JSC { jit.privateCompile(); } - static void compileGetByIdSelf(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, size_t cachedOffset, void* returnAddress) - { - JIT jit(globalData, codeBlock); - jit.privateCompileGetByIdSelf(stubInfo, structure, cachedOffset, returnAddress); - } - - static void compileGetByIdProto(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, size_t cachedOffset, void* returnAddress) + 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); } -#if USE(CTI_REPATCH_PIC) static void compileGetByIdSelfList(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, size_t cachedOffset) { JIT jit(globalData, codeBlock); @@ -312,142 +279,177 @@ namespace JSC { JIT jit(globalData, codeBlock); jit.privateCompileGetByIdChainList(stubInfo, prototypeStructureList, currentIndex, structure, chain, count, cachedOffset, callFrame); } -#endif - static void compileGetByIdChain(JSGlobalData* globalData, CallFrame* callFrame, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, size_t cachedOffset, void* returnAddress) + 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 compilePutByIdReplace(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, size_t cachedOffset, void* returnAddress) - { - JIT jit(globalData, codeBlock); - jit.privateCompilePutByIdReplace(stubInfo, structure, cachedOffset, returnAddress); - } - static void compilePutByIdTransition(JSGlobalData* globalData, CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, size_t cachedOffset, StructureChain* chain, void* returnAddress) + 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) + static void compileCTIMachineTrampolines(JSGlobalData* globalData, RefPtr* executablePool, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallPreLink, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk) { JIT jit(globalData); - jit.privateCompileCTIMachineTrampolines(); + jit.privateCompileCTIMachineTrampolines(executablePool, globalData, ctiStringLengthTrampoline, ctiVirtualCallPreLink, ctiVirtualCallLink, ctiVirtualCall, ctiNativeCallThunk); } - static void patchGetByIdSelf(StructureStubInfo*, Structure*, size_t cachedOffset, void* returnAddress); - static void patchPutByIdReplace(StructureStubInfo*, Structure*, size_t cachedOffset, void* returnAddress); + 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*); - static void compilePatchGetArrayLength(JSGlobalData* globalData, CodeBlock* codeBlock, void* returnAddress) + static void compilePatchGetArrayLength(JSGlobalData* globalData, CodeBlock* codeBlock, ReturnAddressPtr returnAddress) { JIT jit(globalData, codeBlock); return jit.privateCompilePatchGetArrayLength(returnAddress); } - static void linkCall(JSFunction* callee, CodeBlock* calleeCodeBlock, void* ctiCode, CallLinkInfo* callLinkInfo, int callerArgCount); + static void linkCall(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, JITCode&, CallLinkInfo*, int callerArgCount, JSGlobalData*); static void unlinkCall(CallLinkInfo*); - inline static JSValuePtr execute(void* code, RegisterFile* registerFile, CallFrame* callFrame, JSGlobalData* globalData, JSValuePtr* exception) - { - return JSValuePtr::decode(ctiTrampoline( -#if PLATFORM(X86_64) - 0, 0, 0, 0, 0, 0, -#endif - code, registerFile, callFrame, exception, Profiler::enabledProfilerReference(), globalData)); - } - 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(); void privateCompile(); - void privateCompileGetByIdSelf(StructureStubInfo*, Structure*, size_t cachedOffset, void* returnAddress); - void privateCompileGetByIdProto(StructureStubInfo*, Structure*, Structure* prototypeStructure, size_t cachedOffset, void* returnAddress, CallFrame* callFrame); -#if USE(CTI_REPATCH_PIC) + 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); -#endif - void privateCompileGetByIdChain(StructureStubInfo*, Structure*, StructureChain*, size_t count, size_t cachedOffset, void* returnAddress, CallFrame* callFrame); - void privateCompilePutByIdReplace(StructureStubInfo*, Structure*, size_t cachedOffset, void* returnAddress); - void privateCompilePutByIdTransition(StructureStubInfo*, Structure*, Structure*, size_t cachedOffset, StructureChain*, void* returnAddress); + 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(); - void privateCompilePatchGetArrayLength(void* returnAddress); + void privateCompileCTIMachineTrampolines(RefPtr* executablePool, JSGlobalData* data, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallPreLink, 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 compileGetByIdHotPath(int resultVReg, int baseVReg, Identifier* ident, unsigned propertyAccessInstructionIndex); - void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector::iterator& iter, unsigned propertyAccessInstructionIndex); - void compilePutByIdHotPath(int baseVReg, Identifier* ident, int valueVReg, unsigned propertyAccessInstructionIndex); - void compilePutByIdSlowCase(int baseVReg, Identifier* ident, int valueVReg, Vector::iterator& iter, unsigned propertyAccessInstructionIndex); void compileOpCall(OpcodeID, Instruction* instruction, unsigned callLinkInfoIndex); + void compileOpCallVarargs(Instruction* instruction); void compileOpCallInitializeCallFrame(); void compileOpCallSetupArgs(Instruction*); - void compileOpCallEvalSetupArgs(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); - void putDoubleResultToJSNumberCellOrJSImmediate(X86Assembler::XMMRegisterID xmmSource, RegisterID jsNumberCell, unsigned dst, X86Assembler::JmpSrc* wroteJSNumberCell, X86Assembler::XMMRegisterID tempXmm, RegisterID tempReg1, RegisterID tempReg2); - - void compileFastArith_op_add(Instruction*); - void compileFastArith_op_sub(Instruction*); - void compileFastArith_op_mul(Instruction*); - void compileFastArith_op_mod(unsigned result, unsigned op1, unsigned op2); - void compileFastArith_op_bitand(unsigned result, unsigned op1, unsigned op2); - void compileFastArith_op_lshift(unsigned result, unsigned op1, unsigned op2); - void compileFastArith_op_rshift(unsigned result, unsigned op1, unsigned op2); - void compileFastArith_op_pre_inc(unsigned srcDst); - void compileFastArith_op_pre_dec(unsigned srcDst); - void compileFastArith_op_post_inc(unsigned result, unsigned srcDst); - void compileFastArith_op_post_dec(unsigned result, unsigned srcDst); - void compileFastArithSlow_op_add(Instruction*, Vector::iterator&); - void compileFastArithSlow_op_sub(Instruction*, Vector::iterator&); - void compileFastArithSlow_op_mul(Instruction*, Vector::iterator&); - void compileFastArithSlow_op_mod(unsigned result, unsigned op1, unsigned op2, Vector::iterator&); - void compileFastArithSlow_op_bitand(unsigned result, unsigned op1, unsigned op2, Vector::iterator&); - void compileFastArithSlow_op_lshift(unsigned result, unsigned op1, unsigned op2, Vector::iterator&); - void compileFastArithSlow_op_rshift(unsigned result, unsigned op1, unsigned op2, Vector::iterator&); - void compileFastArithSlow_op_pre_inc(unsigned srcDst, Vector::iterator&); - void compileFastArithSlow_op_pre_dec(unsigned srcDst, Vector::iterator&); - void compileFastArithSlow_op_post_inc(unsigned result, unsigned srcDst, Vector::iterator&); - void compileFastArithSlow_op_post_dec(unsigned result, unsigned srcDst, Vector::iterator&); -#if ENABLE(JIT_OPTIMIZE_ARITHMETIC) - void compileBinaryArithOp(OpcodeID, unsigned dst, unsigned src1, unsigned src2, OperandTypes opi); - void compileBinaryArithOpSlowCase(OpcodeID, Vector::iterator&, unsigned dst, unsigned src1, unsigned src2, OperandTypes opi); -#endif - void emitGetVirtualRegister(int src, RegisterID dst); - void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2); - void emitPutVirtualRegister(unsigned dst, RegisterID from = X86::eax); +#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); - void emitPutJITStubArg(RegisterID src, unsigned argumentNumber); - void emitPutJITStubArgFromVirtualRegister(unsigned src, unsigned argumentNumber, RegisterID scratch); - void emitPutJITStubArgConstant(unsigned value, unsigned argumentNumber); - void emitPutJITStubArgConstant(void* value, unsigned argumentNumber); - void emitGetJITStubArg(unsigned argumentNumber, RegisterID dst); + // 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); - void emitInitRegister(unsigned dst); +#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; - void emitPutCTIParam(void* value, unsigned name); - void emitPutCTIParam(RegisterID from, unsigned name); - void emitGetCTIParam(unsigned name, RegisterID to); + 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 - void emitPutToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry entry); - void emitPutImmediateToCallFrameHeader(void* value, RegisterFile::CallFrameHeaderEntry entry); - void emitGetFromCallFrameHeader(RegisterFile::CallFrameHeaderEntry entry, RegisterID to); +#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); - JSValuePtr getConstantOperand(unsigned src); int32_t getConstantOperandImmediateInt(unsigned src); - bool isOperandConstantImmediateInt(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); @@ -455,31 +457,27 @@ namespace JSC { Jump emitJumpIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg); -#if USE(ALTERNATE_JSIMMEDIATE) +#if USE(JSVALUE64) JIT::Jump emitJumpIfImmediateNumber(RegisterID); JIT::Jump emitJumpIfNotImmediateNumber(RegisterID); -#endif - - Jump getSlowCase(Vector::iterator& iter) +#else + JIT::Jump emitJumpIfImmediateNumber(RegisterID reg) { - return iter++->from; + return emitJumpIfImmediateInteger(reg); } - void linkSlowCase(Vector::iterator& iter) + + JIT::Jump emitJumpIfNotImmediateNumber(RegisterID reg) { - iter->from.link(this); - ++iter; + return emitJumpIfNotImmediateInteger(reg); } - void linkSlowCaseIfNotJSCell(Vector::iterator&, int vReg); - +#endif JIT::Jump emitJumpIfImmediateInteger(RegisterID); JIT::Jump emitJumpIfNotImmediateInteger(RegisterID); JIT::Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfNotImmediateInteger(RegisterID); void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID); - Jump checkStructure(RegisterID reg, Structure* structure); - -#if !USE(ALTERNATE_JSIMMEDIATE) +#if !USE(JSVALUE64) void emitFastArithDeTagImmediate(RegisterID); Jump emitFastArithDeTagImmediateJumpIfZero(RegisterID); #endif @@ -488,57 +486,298 @@ namespace JSC { 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 = 66; +#else + static const int patchOffsetGetByIdSlowCaseCall = 44; +#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_ARCH(7) + // 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; +#endif +#endif // USE(JSVALUE32_64) + + 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 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(); - Jump emitNakedCall(RegisterID); - Jump emitNakedCall(void* function); - Jump emitCTICall_internal(void*); - Jump emitCTICall(CTIHelper_j helper) { return emitCTICall_internal(reinterpret_cast(helper)); } - Jump emitCTICall(CTIHelper_o helper) { return emitCTICall_internal(reinterpret_cast(helper)); } - Jump emitCTICall(CTIHelper_p helper) { return emitCTICall_internal(reinterpret_cast(helper)); } - Jump emitCTICall(CTIHelper_v helper) { return emitCTICall_internal(reinterpret_cast(helper)); } - Jump emitCTICall(CTIHelper_s helper) { return emitCTICall_internal(reinterpret_cast(helper)); } - Jump emitCTICall(CTIHelper_b helper) { return emitCTICall_internal(reinterpret_cast(helper)); } - Jump emitCTICall(CTIHelper_2 helper) { return emitCTICall_internal(reinterpret_cast(helper)); } + Call emitNakedCall(CodePtr function = CodePtr()); - void emitGetVariableObjectRegister(RegisterID variableObject, int index, RegisterID dst); - void emitPutVariableObjectRegister(RegisterID src, RegisterID variableObject, int index); - - void emitSlowScriptCheck(); + void preserveReturnAddressAfterCall(RegisterID); + void restoreReturnAddressBeforeReturn(RegisterID); + void restoreReturnAddressBeforeReturn(Address); + + void emitTimeoutCheck(); #ifndef NDEBUG void printBytecodeOperandTypes(unsigned src1, unsigned src2); #endif - void killLastResultRegister(); - -#if ENABLE(CODEBLOCK_SAMPLING) - void sampleCodeBlock(CodeBlock* codeBlock) - { -#if PLATFORM(X86_64) - move(ImmPtr(m_interpreter->sampler()->codeBlockSlot()), X86::ecx); - storePtr(ImmPtr(codeBlock), X86::ecx); -#else - storePtr(ImmPtr(codeBlock), m_interpreter->sampler()->codeBlockSlot()); +#if ENABLE(SAMPLING_FLAGS) + void setSamplingFlag(int32_t); + void clearSamplingFlag(int32_t); #endif - } -#else - void sampleCodeBlock(CodeBlock*) {} + +#if ENABLE(SAMPLING_COUNTERS) + void emitCount(AbstractSamplingCounter&, uint32_t = 1); #endif #if ENABLE(OPCODE_SAMPLING) - void sampleInstruction(Instruction* instruction, bool inHostFunction=false) - { -#if PLATFORM(X86_64) - move(ImmPtr(m_interpreter->sampler()->sampleSlot()), X86::ecx); - storePtr(ImmPtr(m_interpreter->sampler()->encodeSample(instruction, inHostFunction)), X86::ecx); -#else - storePtr(ImmPtr(m_interpreter->sampler()->encodeSample(instruction, inHostFunction)), m_interpreter->sampler()->sampleSlot()); + void sampleInstruction(Instruction*, bool = false); #endif - } + +#if ENABLE(CODEBLOCK_SAMPLING) + void sampleCodeBlock(CodeBlock*); #else - void sampleInstruction(Instruction*, bool) {} + void sampleCodeBlock(CodeBlock*) {} #endif Interpreter* m_interpreter; @@ -549,28 +788,30 @@ namespace JSC { Vector