| /* |
| * 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 <wtf/Platform.h> |
| |
| #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 <bytecode/SamplingTool.h> |
| #include <wtf/AlwaysInline.h> |
| #include <wtf/Vector.h> |
| |
| namespace JSC { |
| |
| class CodeBlock; |
| class JIT; |
| class JSPropertyNameIterator; |
| class Interpreter; |
| class Register; |
| class RegisterFile; |
| class ScopeChainNode; |
| class SimpleJumpTable; |
| class StringJumpTable; |
| class StructureChain; |
| |
| struct CallLinkInfo; |
| struct Instruction; |
| struct OperandTypes; |
| struct PolymorphicAccessStructureList; |
| 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 = 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; |
| |
| 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; |
| // 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 void compile(JSGlobalData* globalData, CodeBlock* codeBlock) |
| { |
| JIT jit(globalData, codeBlock); |
| jit.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>* executablePool, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallPreLink, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk) |
| { |
| JIT jit(globalData); |
| jit.privateCompileCTIMachineTrampolines(executablePool, globalData, ctiStringLengthTrampoline, ctiVirtualCallPreLink, 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*); |
| |
| 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(); |
| void 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>* 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 compileOpCall(OpcodeID, Instruction* instruction, unsigned callLinkInfoIndex); |
| void compileOpCallVarargs(Instruction* instruction); |
| void compileOpCallInitializeCallFrame(); |
| void compileOpCallSetupArgs(Instruction*); |
| void compileOpCallVarargsSetupArgs(Instruction*); |
| void compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID); |
| void compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::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<SlowCaseEntry>::iterator&, unsigned virtualRegisterIndex); |
| |
| #if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS) |
| void compileGetByIdHotPath(); |
| void compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector<SlowCaseEntry>::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<SlowCaseEntry>::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<SlowCaseEntry>::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<SlowCaseEntry>::iterator&); |
| void emitSlow_op_bitand(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_bitnot(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_bitor(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_bitxor(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call_eval(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_call_varargs(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_construct(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_construct_verify(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_convert_this(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_div(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_eq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_get_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_instanceof(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jfalse(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jnless(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jnlesseq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_jtrue(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_loop_if_less(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_loop_if_lesseq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_loop_if_true(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_lshift(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_method_check(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_mod(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_mul(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_negate(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_neq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_not(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_nstricteq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_post_dec(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_post_inc(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_pre_dec(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_pre_inc(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_put_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_resolve_global(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_rshift(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_stricteq(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_sub(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_to_jsnumber(Instruction*, Vector<SlowCaseEntry>::iterator&); |
| void emitSlow_op_to_primitive(Instruction*, Vector<SlowCaseEntry>::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<SlowCaseEntry>::iterator& iter) |
| { |
| return iter++->from; |
| } |
| void linkSlowCase(Vector<SlowCaseEntry>::iterator& iter) |
| { |
| iter->from.link(this); |
| ++iter; |
| } |
| void linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::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<CallRecord> m_calls; |
| Vector<Label> m_labels; |
| Vector<PropertyStubCompilationInfo> m_propertyAccessCompilationInfo; |
| Vector<StructureStubCompilationInfo> m_callStructureStubCompilationInfo; |
| Vector<MethodCallCompilationInfo> m_methodCallCompilationInfo; |
| Vector<JumpTable> m_jmpTable; |
| |
| unsigned m_bytecodeIndex; |
| Vector<JSRInfo> m_jsrSites; |
| Vector<SlowCaseEntry> m_slowCases; |
| Vector<SwitchRecord> m_switches; |
| |
| unsigned m_propertyAccessInstructionIndex; |
| unsigned m_globalResolveInfoIndex; |
| unsigned m_callLinkInfoIndex; |
| |
| #if USE(JSVALUE32_64) |
| unsigned m_jumpTargetIndex; |
| unsigned m_mappedBytecodeIndex; |
| unsigned m_mappedVirtualRegisterIndex; |
| RegisterID m_mappedTag; |
| RegisterID m_mappedPayload; |
| #else |
| int m_lastResultBytecodeRegister; |
| unsigned m_jumpTargetsPosition; |
| #endif |
| } JIT_CLASS_ALIGNMENT; |
| } // namespace JSC |
| |
| #endif // ENABLE(JIT) |
| |
| #endif // JIT_h |
