/* * Copyright (C) 2008, 2012-2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef JIT_h #define JIT_h #if ENABLE(JIT) // 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_OR_CLANG) #define JIT_CLASS_ALIGNMENT __attribute__ ((aligned (32))) #else #define JIT_CLASS_ALIGNMENT #endif #define ASSERT_JIT_OFFSET(actual, expected) ASSERT_WITH_MESSAGE(actual == expected, "JIT Offset \"%s\" should be %d, not %d.\n", #expected, static_cast(expected), static_cast(actual)); #include "CodeBlock.h" #include "CompactJITCodeMap.h" #include "Interpreter.h" #include "JITDisassembler.h" #include "JITInlineCacheGenerator.h" #include "JSInterfaceJIT.h" #include "Opcode.h" #include "PCToCodeOriginMap.h" #include "ResultType.h" #include "UnusedPointer.h" namespace JSC { class ArrayAllocationProfile; class CallLinkInfo; class CodeBlock; class FunctionExecutable; class JIT; class Identifier; class Interpreter; class JSScope; class JSStack; class MarkedAllocator; class Register; class StructureChain; class StructureStubInfo; struct Instruction; struct OperandTypes; struct SimpleJumpTable; struct StringJumpTable; struct CallRecord { MacroAssembler::Call from; unsigned bytecodeOffset; void* to; CallRecord() { } CallRecord(MacroAssembler::Call from, unsigned bytecodeOffset, void* to = 0) : from(from) , bytecodeOffset(bytecodeOffset) , to(to) { } }; struct JumpTable { MacroAssembler::Jump from; unsigned toBytecodeOffset; JumpTable(MacroAssembler::Jump f, unsigned t) : from(f) , toBytecodeOffset(t) { } }; struct SlowCaseEntry { MacroAssembler::Jump from; unsigned to; SlowCaseEntry(MacroAssembler::Jump f, unsigned t) : from(f) , to(t) { } }; struct SwitchRecord { enum Type { Immediate, Character, String }; Type type; union { SimpleJumpTable* simpleJumpTable; StringJumpTable* stringJumpTable; } jumpTable; unsigned bytecodeOffset; unsigned defaultOffset; SwitchRecord(SimpleJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset, Type type) : type(type) , bytecodeOffset(bytecodeOffset) , defaultOffset(defaultOffset) { this->jumpTable.simpleJumpTable = jumpTable; } SwitchRecord(StringJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset) : type(String) , bytecodeOffset(bytecodeOffset) , defaultOffset(defaultOffset) { this->jumpTable.stringJumpTable = jumpTable; } }; struct ByValCompilationInfo { ByValCompilationInfo() { } ByValCompilationInfo(ByValInfo* byValInfo, unsigned bytecodeIndex, MacroAssembler::PatchableJump notIndexJump, MacroAssembler::PatchableJump badTypeJump, JITArrayMode arrayMode, ArrayProfile* arrayProfile, MacroAssembler::Label doneTarget, MacroAssembler::Label nextHotPathTarget) : byValInfo(byValInfo) , bytecodeIndex(bytecodeIndex) , notIndexJump(notIndexJump) , badTypeJump(badTypeJump) , arrayMode(arrayMode) , arrayProfile(arrayProfile) , doneTarget(doneTarget) , nextHotPathTarget(nextHotPathTarget) { } ByValInfo* byValInfo; unsigned bytecodeIndex; MacroAssembler::PatchableJump notIndexJump; MacroAssembler::PatchableJump badTypeJump; JITArrayMode arrayMode; ArrayProfile* arrayProfile; MacroAssembler::Label doneTarget; MacroAssembler::Label nextHotPathTarget; MacroAssembler::Label slowPathTarget; MacroAssembler::Call returnAddress; }; struct CallCompilationInfo { MacroAssembler::DataLabelPtr hotPathBegin; MacroAssembler::Call hotPathOther; MacroAssembler::Call callReturnLocation; CallLinkInfo* callLinkInfo; }; void ctiPatchCallByReturnAddress(ReturnAddressPtr, FunctionPtr newCalleeFunction); class JIT : private JSInterfaceJIT { friend class JITSlowPathCall; friend class JITStubCall; using MacroAssembler::Jump; using MacroAssembler::JumpList; using MacroAssembler::Label; static const uintptr_t patchGetByIdDefaultStructure = unusedPointer; static const int patchGetByIdDefaultOffset = 0; // Magic number - initial offset cannot be representable as a signed 8bit value, or the X86Assembler // will compress the displacement, and we may not be able to fit a patched offset. static const int patchPutByIdDefaultOffset = 256; public: static CompilationResult compile(VM* vm, CodeBlock* codeBlock, JITCompilationEffort effort) { return JIT(vm, codeBlock).privateCompile(effort); } static void compileGetByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompileGetByVal(byValInfo, returnAddress, arrayMode); } static void compileGetByValWithCachedId(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, const Identifier& propertyName) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompileGetByValWithCachedId(byValInfo, returnAddress, propertyName); } static void compilePutByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompilePutByVal(byValInfo, returnAddress, arrayMode); } static void compileDirectPutByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompilePutByVal(byValInfo, returnAddress, arrayMode); } static void compilePutByValWithCachedId(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, PutKind putKind, const Identifier& propertyName) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompilePutByValWithCachedId(byValInfo, returnAddress, putKind, propertyName); } static void compileHasIndexedProperty(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode) { JIT jit(vm, codeBlock); jit.m_bytecodeOffset = byValInfo->bytecodeIndex; jit.privateCompileHasIndexedProperty(byValInfo, returnAddress, arrayMode); } static CodeRef compileCTINativeCall(VM* vm, NativeFunction func) { if (!vm->canUseJIT()) { return CodeRef::createLLIntCodeRef(llint_native_call_trampoline); } JIT jit(vm, 0); return jit.privateCompileCTINativeCall(vm, func); } static unsigned frameRegisterCountFor(CodeBlock*); static int stackPointerOffsetFor(CodeBlock*); JS_EXPORT_PRIVATE static HashMap compileTimeStats(); private: JIT(VM*, CodeBlock* = 0); ~JIT(); void privateCompileMainPass(); void privateCompileLinkPass(); void privateCompileSlowCases(); CompilationResult privateCompile(JITCompilationEffort); void privateCompileGetByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode); void privateCompileGetByValWithCachedId(ByValInfo*, ReturnAddressPtr, const Identifier&); void privateCompilePutByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode); void privateCompilePutByValWithCachedId(ByValInfo*, ReturnAddressPtr, PutKind, const Identifier&); void privateCompileHasIndexedProperty(ByValInfo*, ReturnAddressPtr, JITArrayMode); Label privateCompileCTINativeCall(VM*, bool isConstruct = false); CodeRef privateCompileCTINativeCall(VM*, NativeFunction); void privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress); // Add a call out from JIT code, without an exception check. Call appendCall(const FunctionPtr& function) { Call functionCall = call(); m_calls.append(CallRecord(functionCall, m_bytecodeOffset, function.value())); return functionCall; } #if OS(WINDOWS) && CPU(X86_64) Call appendCallWithSlowPathReturnType(const FunctionPtr& function) { Call functionCall = callWithSlowPathReturnType(); m_calls.append(CallRecord(functionCall, m_bytecodeOffset, function.value())); return functionCall; } #endif void exceptionCheck(Jump jumpToHandler) { m_exceptionChecks.append(jumpToHandler); } void exceptionCheck() { m_exceptionChecks.append(emitExceptionCheck()); } void exceptionCheckWithCallFrameRollback() { m_exceptionChecksWithCallFrameRollback.append(emitExceptionCheck()); } void privateCompileExceptionHandlers(); void addSlowCase(Jump); void addSlowCase(const JumpList&); void addSlowCase(); void addJump(Jump, int); void emitJumpSlowToHot(Jump, int); void compileOpCall(OpcodeID, Instruction*, unsigned callLinkInfoIndex); void compileOpCallSlowCase(OpcodeID, Instruction*, Vector::iterator&, unsigned callLinkInfoIndex); void compileSetupVarargsFrame(Instruction*, CallLinkInfo*); void compileCallEval(Instruction*); void compileCallEvalSlowCase(Instruction*, Vector::iterator&); void emitPutCallResult(Instruction*); enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq }; void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type); bool isOperandConstantDouble(int src); void emitLoadDouble(int index, FPRegisterID value); void emitLoadInt32ToDouble(int index, FPRegisterID value); Jump emitJumpIfCellObject(RegisterID cellReg); Jump emitJumpIfCellNotObject(RegisterID cellReg); enum WriteBarrierMode { UnconditionalWriteBarrier, ShouldFilterBase, ShouldFilterValue, ShouldFilterBaseAndValue }; // value register in write barrier is used before any scratch registers // so may safely be the same as either of the scratch registers. void emitWriteBarrier(unsigned owner, unsigned value, WriteBarrierMode); void emitWriteBarrier(JSCell* owner, unsigned value, WriteBarrierMode); void emitWriteBarrier(JSCell* owner); template // StructureType can be RegisterID or ImmPtr. void emitAllocateJSObject(RegisterID allocator, StructureType, RegisterID result, RegisterID scratch); // This assumes that the value to profile is in regT0 and that regT3 is available for // scratch. void emitValueProfilingSite(ValueProfile*); void emitValueProfilingSite(unsigned bytecodeOffset); void emitValueProfilingSite(); void emitArrayProfilingSiteWithCell(RegisterID cell, RegisterID indexingType, ArrayProfile*); void emitArrayProfilingSiteForBytecodeIndexWithCell(RegisterID cell, RegisterID indexingType, unsigned bytecodeIndex); void emitArrayProfileStoreToHoleSpecialCase(ArrayProfile*); void emitArrayProfileOutOfBoundsSpecialCase(ArrayProfile*); JITArrayMode chooseArrayMode(ArrayProfile*); // Property is in regT1, base is in regT0. regT2 contains indexing type. // Property is int-checked and zero extended. Base is cell checked. // Structure is already profiled. Returns the slow cases. Fall-through // case contains result in regT0, and it is not yet profiled. JumpList emitInt32Load(Instruction* instruction, PatchableJump& badType) { return emitContiguousLoad(instruction, badType, Int32Shape); } JumpList emitDoubleLoad(Instruction*, PatchableJump& badType); JumpList emitContiguousLoad(Instruction*, PatchableJump& badType, IndexingType expectedShape = ContiguousShape); JumpList emitArrayStorageLoad(Instruction*, PatchableJump& badType); JumpList emitLoadForArrayMode(Instruction*, JITArrayMode, PatchableJump& badType); JumpList emitInt32GetByVal(Instruction* instruction, PatchableJump& badType) { return emitContiguousGetByVal(instruction, badType, Int32Shape); } JumpList emitDoubleGetByVal(Instruction*, PatchableJump& badType); JumpList emitContiguousGetByVal(Instruction*, PatchableJump& badType, IndexingType expectedShape = ContiguousShape); JumpList emitArrayStorageGetByVal(Instruction*, PatchableJump& badType); JumpList emitDirectArgumentsGetByVal(Instruction*, PatchableJump& badType); JumpList emitScopedArgumentsGetByVal(Instruction*, PatchableJump& badType); JumpList emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType); JumpList emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType); // Property is in regT1, base is in regT0. regT2 contains indecing type. // The value to store is not yet loaded. Property is int-checked and // zero-extended. Base is cell checked. Structure is already profiled. // returns the slow cases. JumpList emitInt32PutByVal(Instruction* currentInstruction, PatchableJump& badType) { return emitGenericContiguousPutByVal(currentInstruction, badType, Int32Shape); } JumpList emitDoublePutByVal(Instruction* currentInstruction, PatchableJump& badType) { return emitGenericContiguousPutByVal(currentInstruction, badType, DoubleShape); } JumpList emitContiguousPutByVal(Instruction* currentInstruction, PatchableJump& badType) { return emitGenericContiguousPutByVal(currentInstruction, badType); } JumpList emitGenericContiguousPutByVal(Instruction*, PatchableJump& badType, IndexingType indexingShape = ContiguousShape); JumpList emitArrayStoragePutByVal(Instruction*, PatchableJump& badType); JumpList emitIntTypedArrayPutByVal(Instruction*, PatchableJump& badType, TypedArrayType); JumpList emitFloatTypedArrayPutByVal(Instruction*, PatchableJump& badType, TypedArrayType); // Identifier check helper for GetByVal and PutByVal. void emitIdentifierCheck(RegisterID cell, RegisterID scratch, const Identifier&, JumpList& slowCases); JITGetByIdGenerator emitGetByValWithCachedId(Instruction*, const Identifier&, Jump& fastDoneCase, Jump& slowDoneCase, JumpList& slowCases); JITPutByIdGenerator emitPutByValWithCachedId(Instruction*, PutKind, const Identifier&, JumpList& doneCases, JumpList& slowCases); enum FinalObjectMode { MayBeFinal, KnownNotFinal }; void emitGetVirtualRegister(int src, JSValueRegs dst); void emitPutVirtualRegister(int dst, JSValueRegs src); int32_t getOperandConstantInt(int src); double getOperandConstantDouble(int src); #if USE(JSVALUE32_64) bool getOperandConstantInt(int op1, int op2, int& op, int32_t& constant); void emitLoadTag(int index, RegisterID tag); void emitLoadPayload(int index, RegisterID payload); void emitLoad(const JSValue& v, RegisterID tag, RegisterID payload); void emitLoad(int index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitLoad2(int index1, RegisterID tag1, RegisterID payload1, int index2, RegisterID tag2, RegisterID payload2); void emitStore(int index, RegisterID tag, RegisterID payload, RegisterID base = callFrameRegister); void emitStore(int index, const JSValue constant, RegisterID base = callFrameRegister); void emitStoreInt32(int index, RegisterID payload, bool indexIsInt32 = false); void emitStoreInt32(int index, TrustedImm32 payload, bool indexIsInt32 = false); void emitStoreCell(int index, RegisterID payload, bool indexIsCell = false); void emitStoreBool(int index, RegisterID payload, bool indexIsBool = false); void emitStoreDouble(int index, FPRegisterID value); void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex); void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex, RegisterID tag); void compileGetByIdHotPath(const Identifier*); // Arithmetic opcode helpers void emitSub32Constant(int dst, int op, int32_t constant, ResultType opType); void emitBinaryDoubleOp(OpcodeID, int dst, int op1, int op2, OperandTypes, JumpList& notInt32Op1, JumpList& notInt32Op2, bool op1IsInRegisters = true, bool op2IsInRegisters = true); #else // USE(JSVALUE32_64) void emitGetVirtualRegister(int src, RegisterID dst); void emitGetVirtualRegister(VirtualRegister src, RegisterID dst); void emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2); void emitGetVirtualRegisters(VirtualRegister src1, RegisterID dst1, VirtualRegister src2, RegisterID dst2); void emitPutVirtualRegister(int dst, RegisterID from = regT0); void emitPutVirtualRegister(VirtualRegister dst, RegisterID from = regT0); void emitStoreCell(int dst, RegisterID payload, bool /* only used in JSValue32_64 */ = false) { emitPutVirtualRegister(dst, payload); } void emitStoreCell(VirtualRegister dst, RegisterID payload) { emitPutVirtualRegister(dst, payload); } Jump emitJumpIfJSCell(RegisterID); Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID); void emitJumpSlowCaseIfJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID); void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg); Jump emitJumpIfInt(RegisterID); Jump emitJumpIfNotInt(RegisterID); Jump emitJumpIfNotInt(RegisterID, RegisterID, RegisterID scratch); PatchableJump emitPatchableJumpIfNotInt(RegisterID); void emitJumpSlowCaseIfNotInt(RegisterID); void emitJumpSlowCaseIfNotNumber(RegisterID); void emitJumpSlowCaseIfNotInt(RegisterID, RegisterID, RegisterID scratch); void emitTagBool(RegisterID); void compileGetByIdHotPath(int baseVReg, const Identifier*); #endif // USE(JSVALUE32_64) void emit_compareAndJump(OpcodeID, int op1, int op2, unsigned target, RelationalCondition); void emit_compareAndJumpSlow(int op1, int op2, unsigned target, DoubleCondition, size_t (JIT_OPERATION *operation)(ExecState*, EncodedJSValue, EncodedJSValue), bool invert, Vector::iterator&); void assertStackPointerOffset(); void emit_op_add(Instruction*); void emit_op_bitand(Instruction*); void emit_op_bitor(Instruction*); void emit_op_bitxor(Instruction*); void emit_op_call(Instruction*); void emit_op_tail_call(Instruction*); void emit_op_call_eval(Instruction*); void emit_op_call_varargs(Instruction*); void emit_op_tail_call_varargs(Instruction*); void emit_op_construct_varargs(Instruction*); void emit_op_catch(Instruction*); void emit_op_construct(Instruction*); void emit_op_create_this(Instruction*); void emit_op_to_this(Instruction*); void emit_op_create_direct_arguments(Instruction*); void emit_op_create_scoped_arguments(Instruction*); void emit_op_create_cloned_arguments(Instruction*); void emit_op_argument_count(Instruction*); void emit_op_copy_rest(Instruction*); void emit_op_get_rest_length(Instruction*); void emit_op_check_tdz(Instruction*); void emit_op_assert(Instruction*); void emit_op_save(Instruction*); void emit_op_resume(Instruction*); void emit_op_debug(Instruction*); void emit_op_del_by_id(Instruction*); void emit_op_del_by_val(Instruction*); void emit_op_div(Instruction*); void emit_op_end(Instruction*); void emit_op_enter(Instruction*); void emit_op_get_scope(Instruction*); void emit_op_eq(Instruction*); void emit_op_eq_null(Instruction*); void emit_op_try_get_by_id(Instruction*); void emit_op_get_by_id(Instruction*); void emit_op_get_by_id_with_this(Instruction*); void emit_op_get_by_val_with_this(Instruction*); void emit_op_get_arguments_length(Instruction*); void emit_op_get_by_val(Instruction*); void emit_op_get_argument_by_val(Instruction*); void emit_op_init_lazy_reg(Instruction*); void emit_op_overrides_has_instance(Instruction*); void emit_op_instanceof(Instruction*); void emit_op_instanceof_custom(Instruction*); void emit_op_is_empty(Instruction*); void emit_op_is_undefined(Instruction*); void emit_op_is_boolean(Instruction*); void emit_op_is_number(Instruction*); void emit_op_is_string(Instruction*); void emit_op_is_object(Instruction*); void emit_op_jeq_null(Instruction*); void emit_op_jfalse(Instruction*); void emit_op_jmp(Instruction*); void emit_op_jneq_null(Instruction*); void emit_op_jneq_ptr(Instruction*); void emit_op_jless(Instruction*); void emit_op_jlesseq(Instruction*); void emit_op_jgreater(Instruction*); void emit_op_jgreatereq(Instruction*); void emit_op_jnless(Instruction*); void emit_op_jnlesseq(Instruction*); void emit_op_jngreater(Instruction*); void emit_op_jngreatereq(Instruction*); void emit_op_jtrue(Instruction*); void emit_op_loop_hint(Instruction*); void emit_op_watchdog(Instruction*); void emit_op_lshift(Instruction*); void emit_op_mod(Instruction*); void emit_op_mov(Instruction*); void emit_op_mul(Instruction*); void emit_op_negate(Instruction*); void emit_op_neq(Instruction*); void emit_op_neq_null(Instruction*); void emit_op_new_array(Instruction*); void emit_op_new_array_with_size(Instruction*); void emit_op_new_array_buffer(Instruction*); void emit_op_new_func(Instruction*); void emit_op_new_func_exp(Instruction*); void emit_op_new_generator_func(Instruction*); void emit_op_new_generator_func_exp(Instruction*); void emit_op_new_object(Instruction*); void emit_op_new_regexp(Instruction*); void emit_op_not(Instruction*); void emit_op_nstricteq(Instruction*); void emit_op_dec(Instruction*); void emit_op_inc(Instruction*); void emit_op_profile_type(Instruction*); void emit_op_profile_control_flow(Instruction*); void emit_op_push_with_scope(Instruction*); void emit_op_create_lexical_environment(Instruction*); void emit_op_get_parent_scope(Instruction*); void emit_op_put_by_id(Instruction*); void emit_op_put_by_id_with_this(Instruction*); void emit_op_put_by_index(Instruction*); void emit_op_put_by_val(Instruction*); void emit_op_put_by_val_with_this(Instruction*); void emit_op_put_getter_by_id(Instruction*); void emit_op_put_setter_by_id(Instruction*); void emit_op_put_getter_setter_by_id(Instruction*); void emit_op_put_getter_by_val(Instruction*); void emit_op_put_setter_by_val(Instruction*); void emit_op_ret(Instruction*); void emit_op_rshift(Instruction*); void emit_op_set_function_name(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_arguments(Instruction*); void emit_op_throw(Instruction*); void emit_op_throw_static_error(Instruction*); void emit_op_to_number(Instruction*); void emit_op_to_string(Instruction*); void emit_op_to_primitive(Instruction*); void emit_op_unexpected_load(Instruction*); void emit_op_unsigned(Instruction*); void emit_op_urshift(Instruction*); void emit_op_get_enumerable_length(Instruction*); void emit_op_has_generic_property(Instruction*); void emit_op_has_structure_property(Instruction*); void emit_op_has_indexed_property(Instruction*); void emit_op_get_direct_pname(Instruction*); void emit_op_get_property_enumerator(Instruction*); void emit_op_enumerator_structure_pname(Instruction*); void emit_op_enumerator_generic_pname(Instruction*); void emit_op_to_index_string(Instruction*); void emit_op_log_shadow_chicken_prologue(Instruction*); void emit_op_log_shadow_chicken_tail(Instruction*); void emitSlow_op_add(Instruction*, Vector::iterator&); void emitSlow_op_bitand(Instruction*, Vector::iterator&); void emitSlow_op_bitor(Instruction*, Vector::iterator&); void emitSlow_op_bitxor(Instruction*, Vector::iterator&); void emitSlow_op_call(Instruction*, Vector::iterator&); void emitSlow_op_tail_call(Instruction*, Vector::iterator&); void emitSlow_op_call_eval(Instruction*, Vector::iterator&); void emitSlow_op_call_varargs(Instruction*, Vector::iterator&); void emitSlow_op_tail_call_varargs(Instruction*, Vector::iterator&); void emitSlow_op_construct_varargs(Instruction*, Vector::iterator&); void emitSlow_op_construct(Instruction*, Vector::iterator&); void emitSlow_op_to_this(Instruction*, Vector::iterator&); void emitSlow_op_create_this(Instruction*, Vector::iterator&); void emitSlow_op_check_tdz(Instruction*, Vector::iterator&); void emitSlow_op_div(Instruction*, Vector::iterator&); void emitSlow_op_eq(Instruction*, Vector::iterator&); void emitSlow_op_get_callee(Instruction*, Vector::iterator&); void emitSlow_op_try_get_by_id(Instruction*, Vector::iterator&); void emitSlow_op_get_by_id(Instruction*, Vector::iterator&); void emitSlow_op_get_arguments_length(Instruction*, Vector::iterator&); void emitSlow_op_get_by_val(Instruction*, Vector::iterator&); void emitSlow_op_get_argument_by_val(Instruction*, Vector::iterator&); void emitSlow_op_instanceof(Instruction*, Vector::iterator&); void emitSlow_op_instanceof_custom(Instruction*, Vector::iterator&); void emitSlow_op_jfalse(Instruction*, Vector::iterator&); void emitSlow_op_jless(Instruction*, Vector::iterator&); void emitSlow_op_jlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jgreater(Instruction*, Vector::iterator&); void emitSlow_op_jgreatereq(Instruction*, Vector::iterator&); void emitSlow_op_jnless(Instruction*, Vector::iterator&); void emitSlow_op_jnlesseq(Instruction*, Vector::iterator&); void emitSlow_op_jngreater(Instruction*, Vector::iterator&); void emitSlow_op_jngreatereq(Instruction*, Vector::iterator&); void emitSlow_op_jtrue(Instruction*, Vector::iterator&); void emitSlow_op_loop_hint(Instruction*, Vector::iterator&); void emitSlow_op_watchdog(Instruction*, Vector::iterator&); void emitSlow_op_lshift(Instruction*, Vector::iterator&); void emitSlow_op_mod(Instruction*, Vector::iterator&); void emitSlow_op_mul(Instruction*, Vector::iterator&); void emitSlow_op_negate(Instruction*, Vector::iterator&); void emitSlow_op_neq(Instruction*, Vector::iterator&); void emitSlow_op_new_object(Instruction*, Vector::iterator&); void emitSlow_op_not(Instruction*, Vector::iterator&); void emitSlow_op_nstricteq(Instruction*, Vector::iterator&); void emitSlow_op_dec(Instruction*, Vector::iterator&); void emitSlow_op_inc(Instruction*, Vector::iterator&); void emitSlow_op_put_by_id(Instruction*, Vector::iterator&); void emitSlow_op_put_by_val(Instruction*, Vector::iterator&); void emitSlow_op_rshift(Instruction*, Vector::iterator&); void emitSlow_op_stricteq(Instruction*, Vector::iterator&); void emitSlow_op_sub(Instruction*, Vector::iterator&); void emitSlow_op_to_number(Instruction*, Vector::iterator&); void emitSlow_op_to_string(Instruction*, Vector::iterator&); void emitSlow_op_to_primitive(Instruction*, Vector::iterator&); void emitSlow_op_unsigned(Instruction*, Vector::iterator&); void emitSlow_op_urshift(Instruction*, Vector::iterator&); void emitSlow_op_has_indexed_property(Instruction*, Vector::iterator&); void emitSlow_op_has_structure_property(Instruction*, Vector::iterator&); void emitSlow_op_get_direct_pname(Instruction*, Vector::iterator&); void emit_op_resolve_scope(Instruction*); void emit_op_get_from_scope(Instruction*); void emit_op_put_to_scope(Instruction*); void emit_op_get_from_arguments(Instruction*); void emit_op_put_to_arguments(Instruction*); void emitSlow_op_resolve_scope(Instruction*, Vector::iterator&); void emitSlow_op_get_from_scope(Instruction*, Vector::iterator&); void emitSlow_op_put_to_scope(Instruction*, Vector::iterator&); void emitRightShift(Instruction*, bool isUnsigned); void emitRightShiftSlowCase(Instruction*, Vector::iterator&, bool isUnsigned); void emitNewFuncCommon(Instruction*); void emitNewFuncExprCommon(Instruction*); void emitVarInjectionCheck(bool needsVarInjectionChecks); void emitResolveClosure(int dst, int scope, bool needsVarInjectionChecks, unsigned depth); void emitLoadWithStructureCheck(int scope, Structure** structureSlot); #if USE(JSVALUE64) void emitGetVarFromPointer(JSValue* operand, GPRReg); void emitGetVarFromIndirectPointer(JSValue** operand, GPRReg); #else void emitGetVarFromIndirectPointer(JSValue** operand, GPRReg tag, GPRReg payload); void emitGetVarFromPointer(JSValue* operand, GPRReg tag, GPRReg payload); #endif void emitGetClosureVar(int scope, uintptr_t operand); void emitNotifyWrite(WatchpointSet*); void emitNotifyWrite(GPRReg pointerToSet); void emitPutGlobalVariable(JSValue* operand, int value, WatchpointSet*); void emitPutGlobalVariableIndirect(JSValue** addressOfOperand, int value, WatchpointSet**); void emitPutClosureVar(int scope, uintptr_t operand, int value, WatchpointSet*); void emitInitRegister(int dst); void emitPutIntToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry); JSValue getConstantOperand(int src); bool isOperandConstantInt(int src); bool isOperandConstantChar(int src); Jump getSlowCase(Vector::iterator& iter) { return iter++->from; } void linkSlowCase(Vector::iterator& iter) { iter->from.link(this); ++iter; } void linkDummySlowCase(Vector::iterator& iter) { ASSERT(!iter->from.isSet()); ++iter; } void linkSlowCaseIfNotJSCell(Vector::iterator&, int virtualRegisterIndex); void linkAllSlowCasesForBytecodeOffset(Vector& slowCases, Vector::iterator&, unsigned bytecodeOffset); MacroAssembler::Call appendCallWithExceptionCheck(const FunctionPtr&); #if OS(WINDOWS) && CPU(X86_64) MacroAssembler::Call appendCallWithExceptionCheckAndSlowPathReturnType(const FunctionPtr&); #endif MacroAssembler::Call appendCallWithCallFrameRollbackOnException(const FunctionPtr&); MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResult(const FunctionPtr&, int); MacroAssembler::Call appendCallWithExceptionCheckSetJSValueResultWithProfile(const FunctionPtr&, int); enum WithProfileTag { WithProfile }; MacroAssembler::Call callOperation(C_JITOperation_E); MacroAssembler::Call callOperation(C_JITOperation_EO, GPRReg); MacroAssembler::Call callOperation(C_JITOperation_EL, GPRReg); MacroAssembler::Call callOperation(C_JITOperation_EL, TrustedImmPtr); MacroAssembler::Call callOperation(C_JITOperation_ESt, Structure*); MacroAssembler::Call callOperation(C_JITOperation_EZ, int32_t); MacroAssembler::Call callOperation(Z_JITOperation_EJZZ, GPRReg, int32_t, int32_t); MacroAssembler::Call callOperation(J_JITOperation_E, int); MacroAssembler::Call callOperation(J_JITOperation_EAapJ, int, ArrayAllocationProfile*, GPRReg); MacroAssembler::Call callOperation(J_JITOperation_EAapJcpZ, int, ArrayAllocationProfile*, GPRReg, int32_t); MacroAssembler::Call callOperation(J_JITOperation_EAapJcpZ, int, ArrayAllocationProfile*, const JSValue*, int32_t); MacroAssembler::Call callOperation(J_JITOperation_EC, int, JSCell*); MacroAssembler::Call callOperation(V_JITOperation_EC, JSCell*); MacroAssembler::Call callOperation(J_JITOperation_EJ, int, GPRReg); #if USE(JSVALUE64) MacroAssembler::Call callOperation(J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, UniquedStringImpl*); MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, UniquedStringImpl*); #else MacroAssembler::Call callOperation(J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, GPRReg, UniquedStringImpl*); MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, GPRReg, UniquedStringImpl*); #endif MacroAssembler::Call callOperation(J_JITOperation_EJI, int, GPRReg, UniquedStringImpl*); MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg); MacroAssembler::Call callOperation(J_JITOperation_EJJRp, JSValueRegs, JSValueRegs, JSValueRegs, ResultProfile*); MacroAssembler::Call callOperation(J_JITOperation_EJJAp, int, GPRReg, GPRReg, ArrayProfile*); MacroAssembler::Call callOperation(J_JITOperation_EJJBy, int, GPRReg, GPRReg, ByValInfo*); MacroAssembler::Call callOperation(Z_JITOperation_EJOJ, GPRReg, GPRReg, GPRReg); MacroAssembler::Call callOperation(C_JITOperation_EJsc, GPRReg); MacroAssembler::Call callOperation(J_JITOperation_EJscC, int, GPRReg, JSCell*); MacroAssembler::Call callOperation(J_JITOperation_EJscCJ, int, GPRReg, JSCell*, GPRReg); MacroAssembler::Call callOperation(C_JITOperation_EJscZ, GPRReg, int32_t); MacroAssembler::Call callOperation(C_JITOperation_EJscZ, int, GPRReg, int32_t); #if USE(JSVALUE64) MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_EJJ, int, GPRReg, GPRReg); #else MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_EJJ, int, GPRReg, GPRReg, GPRReg, GPRReg); #endif MacroAssembler::Call callOperation(J_JITOperation_EP, int, void*); MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_EPc, int, Instruction*); MacroAssembler::Call callOperation(J_JITOperation_EPc, int, Instruction*); MacroAssembler::Call callOperation(J_JITOperation_EZ, int, int32_t); MacroAssembler::Call callOperation(J_JITOperation_EZZ, int, int32_t, int32_t); MacroAssembler::Call callOperation(P_JITOperation_E); MacroAssembler::Call callOperation(P_JITOperation_EJS, GPRReg, size_t); MacroAssembler::Call callOperation(S_JITOperation_ECC, RegisterID, RegisterID); MacroAssembler::Call callOperation(S_JITOperation_EJ, RegisterID); MacroAssembler::Call callOperation(S_JITOperation_EJI, GPRReg, UniquedStringImpl*); MacroAssembler::Call callOperation(S_JITOperation_EJJ, RegisterID, RegisterID); MacroAssembler::Call callOperation(S_JITOperation_EOJss, RegisterID, RegisterID); MacroAssembler::Call callOperation(Sprt_JITOperation_EZ, int32_t); MacroAssembler::Call callOperation(V_JITOperation_E); MacroAssembler::Call callOperation(V_JITOperation_EC, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_ECC, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_ECIZC, RegisterID, UniquedStringImpl*, int32_t, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_ECIZCC, RegisterID, UniquedStringImpl*, int32_t, RegisterID, RegisterID); #if USE(JSVALUE64) MacroAssembler::Call callOperation(V_JITOperation_ECJZC, RegisterID, RegisterID, int32_t, RegisterID); #else MacroAssembler::Call callOperation(V_JITOperation_ECJZC, RegisterID, RegisterID, RegisterID, int32_t, RegisterID); #endif MacroAssembler::Call callOperation(J_JITOperation_EE, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EZSymtabJ, int, SymbolTable*, RegisterID); MacroAssembler::Call callOperation(J_JITOperation_EZSymtabJ, int, SymbolTable*, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EJ, RegisterID); MacroAssembler::Call callOperationNoExceptionCheck(Z_JITOperation_E); #if USE(JSVALUE64) MacroAssembler::Call callOperationNoExceptionCheck(V_JITOperation_EJ, RegisterID); #else MacroAssembler::Call callOperationNoExceptionCheck(V_JITOperation_EJ, RegisterID, RegisterID); #endif #if USE(JSVALUE64) MacroAssembler::Call callOperation(F_JITOperation_EFJZZ, RegisterID, RegisterID, int32_t, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_ESsiJJI, StructureStubInfo*, RegisterID, RegisterID, UniquedStringImpl*); MacroAssembler::Call callOperation(V_JITOperation_ECIZJJ, RegisterID, UniquedStringImpl*, int32_t, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_ECJ, RegisterID, RegisterID); #else MacroAssembler::Call callOperation(V_JITOperation_ESsiJJI, StructureStubInfo*, RegisterID, RegisterID, RegisterID, RegisterID, UniquedStringImpl*); MacroAssembler::Call callOperation(V_JITOperation_ECJ, RegisterID, RegisterID, RegisterID); #endif MacroAssembler::Call callOperation(V_JITOperation_EJJJ, RegisterID, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EJJJAp, RegisterID, RegisterID, RegisterID, ArrayProfile*); MacroAssembler::Call callOperation(V_JITOperation_EJJJBy, RegisterID, RegisterID, RegisterID, ByValInfo*); MacroAssembler::Call callOperation(V_JITOperation_EJZJ, RegisterID, int32_t, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EJZ, RegisterID, int32_t); MacroAssembler::Call callOperation(V_JITOperation_EPc, Instruction*); MacroAssembler::Call callOperation(V_JITOperation_EZ, int32_t); MacroAssembler::Call callOperation(V_JITOperation_EZJ, int, GPRReg); MacroAssembler::Call callOperationWithCallFrameRollbackOnException(J_JITOperation_E); MacroAssembler::Call callOperationWithCallFrameRollbackOnException(V_JITOperation_ECb, CodeBlock*); MacroAssembler::Call callOperationWithCallFrameRollbackOnException(Z_JITOperation_E); #if USE(JSVALUE32_64) MacroAssembler::Call callOperation(F_JITOperation_EFJZZ, RegisterID, RegisterID, RegisterID, int32_t, RegisterID); MacroAssembler::Call callOperation(Z_JITOperation_EJZZ, GPRReg, GPRReg, int32_t, int32_t); MacroAssembler::Call callOperation(J_JITOperation_EAapJ, int, ArrayAllocationProfile*, GPRReg, GPRReg); MacroAssembler::Call callOperation(J_JITOperation_EJ, int, GPRReg, GPRReg); MacroAssembler::Call callOperation(J_JITOperation_EJI, int, GPRReg, GPRReg, UniquedStringImpl*); MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg, GPRReg, GPRReg); MacroAssembler::Call callOperation(Z_JITOperation_EJOJ, GPRReg, GPRReg, GPRReg, GPRReg, GPRReg); MacroAssembler::Call callOperation(J_JITOperation_EJJAp, int, GPRReg, GPRReg, GPRReg, GPRReg, ArrayProfile*); MacroAssembler::Call callOperation(J_JITOperation_EJJBy, int, GPRReg, GPRReg, GPRReg, GPRReg, ByValInfo*); MacroAssembler::Call callOperation(P_JITOperation_EJS, GPRReg, GPRReg, size_t); MacroAssembler::Call callOperation(S_JITOperation_EJ, RegisterID, RegisterID); MacroAssembler::Call callOperation(S_JITOperation_EJI, GPRReg, GPRReg, UniquedStringImpl*); MacroAssembler::Call callOperation(S_JITOperation_EJJ, RegisterID, RegisterID, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EZSymtabJ, int, SymbolTable*, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EJ, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EJJJ, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EJJJAp, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID, ArrayProfile*); MacroAssembler::Call callOperation(V_JITOperation_EJJJBy, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID, RegisterID, ByValInfo*); MacroAssembler::Call callOperation(V_JITOperation_EJZ, RegisterID, RegisterID, int32_t); MacroAssembler::Call callOperation(V_JITOperation_EJZJ, RegisterID, RegisterID, int32_t, RegisterID, RegisterID); MacroAssembler::Call callOperation(V_JITOperation_EZJ, int32_t, RegisterID, RegisterID); MacroAssembler::Call callOperation(J_JITOperation_EJscCJ, int, GPRReg, JSCell*, GPRReg, GPRReg); #endif template void emitBitBinaryOpFastPath(Instruction* currentInstruction); void emitRightShiftFastPath(Instruction* currentInstruction, OpcodeID); Jump checkStructure(RegisterID reg, Structure* structure); void updateTopCallFrame(); Call emitNakedCall(CodePtr function = CodePtr()); Call emitNakedTailCall(CodePtr function = CodePtr()); // Loads the character value of a single character string into dst. void emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures); #if ENABLE(DFG_JIT) void emitEnterOptimizationCheck(); #else void emitEnterOptimizationCheck() { } #endif #ifndef NDEBUG void printBytecodeOperandTypes(int src1, int src2); #endif #if ENABLE(SAMPLING_FLAGS) void setSamplingFlag(int32_t); void clearSamplingFlag(int32_t); #endif #if ENABLE(SAMPLING_COUNTERS) void emitCount(AbstractSamplingCounter&, int32_t = 1); #endif #if ENABLE(OPCODE_SAMPLING) void sampleInstruction(Instruction*, bool = false); #endif #if ENABLE(CODEBLOCK_SAMPLING) void sampleCodeBlock(CodeBlock*); #else void sampleCodeBlock(CodeBlock*) {} #endif #if ENABLE(DFG_JIT) bool canBeOptimized() { return m_canBeOptimized; } bool canBeOptimizedOrInlined() { return m_canBeOptimizedOrInlined; } bool shouldEmitProfiling() { return m_shouldEmitProfiling; } #else bool canBeOptimized() { return false; } bool canBeOptimizedOrInlined() { return false; } // Enables use of value profiler with tiered compilation turned off, // in which case all code gets profiled. bool shouldEmitProfiling() { return false; } #endif static bool reportCompileTimes(); static bool computeCompileTimes(); Interpreter* m_interpreter; Vector m_calls; Vector