/*

* Copyright (C) 2008, 2012, 2013 Apple Inc. All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

*

* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR

* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#ifndef JIT_h

#define JIT_h

#if ENABLE(JIT)

// We've run into some problems where changing the size of the class JIT leads to

// performance fluctuations. Try forcing alignment in an attempt to stabalize this.

#if COMPILER(GCC)

#define JIT_CLASS_ALIGNMENT __attribute__ ((aligned (32)))

#else

#define JIT_CLASS_ALIGNMENT

#endif

#define ASSERT_JIT_OFFSET(actual, expected) ASSERT_WITH_MESSAGE(actual == expected, "JIT Offset \"%s\" should be %d, not %d.\n", #expected, static_cast<int>(expected), static_cast<int>(actual));

#include "CodeBlock.h"

#include "CompactJITCodeMap.h"

#include "Interpreter.h"

#include "JITDisassembler.h"

#include "JITInlineCacheGenerator.h"

#include "JSInterfaceJIT.h"

#include "LegacyProfiler.h"

#include "Opcode.h"

#include "ResultType.h"

#include "SamplingTool.h"

#include "UnusedPointer.h"

namespace JSC {

class ArrayAllocationProfile;

class CodeBlock;

class FunctionExecutable;

class JIT;

class JSPropertyNameIterator;

class Identifier;

class Interpreter;

class JSScope;

class JSStack;

class MarkedAllocator;

class Register;

class StructureChain;

struct CallLinkInfo;

struct Instruction;

struct OperandTypes;

struct PolymorphicAccessStructureList;

struct SimpleJumpTable;

struct StringJumpTable;

struct StructureStubInfo;

struct CallRecord {

MacroAssembler::Call from;

unsigned bytecodeOffset;

void* to;

CallRecord()

{

}

CallRecord(MacroAssembler::Call from, unsigned bytecodeOffset, void* to = 0)

: from(from)

, bytecodeOffset(bytecodeOffset)

, to(to)

{

}

};

struct JumpTable {

MacroAssembler::Jump from;

unsigned toBytecodeOffset;

JumpTable(MacroAssembler::Jump f, unsigned t)

: from(f)

, toBytecodeOffset(t)

{

}

};

struct SlowCaseEntry {

MacroAssembler::Jump from;

unsigned to;

unsigned hint;

SlowCaseEntry(MacroAssembler::Jump f, unsigned t, unsigned h = 0)

: from(f)

, to(t)

, hint(h)

{

}

};

struct SwitchRecord {

enum Type {

Immediate,

Character,

String

};

Type type;

union {

SimpleJumpTable* simpleJumpTable;

StringJumpTable* stringJumpTable;

} jumpTable;

unsigned bytecodeOffset;

unsigned defaultOffset;

SwitchRecord(SimpleJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset, Type type)

: type(type)

, bytecodeOffset(bytecodeOffset)

, defaultOffset(defaultOffset)

{

this->jumpTable.simpleJumpTable = jumpTable;

}

SwitchRecord(StringJumpTable* jumpTable, unsigned bytecodeOffset, unsigned defaultOffset)

: type(String)

, bytecodeOffset(bytecodeOffset)

, defaultOffset(defaultOffset)

{

this->jumpTable.stringJumpTable = jumpTable;

}

};

struct ByValCompilationInfo {

ByValCompilationInfo() { }

ByValCompilationInfo(unsigned bytecodeIndex, MacroAssembler::PatchableJump badTypeJump, JITArrayMode arrayMode, MacroAssembler::Label doneTarget)

: bytecodeIndex(bytecodeIndex)

, badTypeJump(badTypeJump)

, arrayMode(arrayMode)

, doneTarget(doneTarget)

{

}

unsigned bytecodeIndex;

MacroAssembler::PatchableJump badTypeJump;

JITArrayMode arrayMode;

MacroAssembler::Label doneTarget;

MacroAssembler::Label slowPathTarget;

MacroAssembler::Call returnAddress;

};

struct StructureStubCompilationInfo {

MacroAssembler::DataLabelPtr hotPathBegin;

MacroAssembler::Call hotPathOther;

MacroAssembler::Call callReturnLocation;

CallLinkInfo::CallType callType;

unsigned bytecodeIndex;

};

// Near calls can only be patched to other JIT code, regular calls can be patched to JIT code or relinked to stub functions.

void ctiPatchNearCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction);

void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction);

void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, FunctionPtr newCalleeFunction);

class JIT : private JSInterfaceJIT {

friend class 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 compileClosureCall(VM* vm, CallLinkInfo* callLinkInfo, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr)

{

JIT jit(vm, callerCodeBlock);

jit.m_bytecodeOffset = callLinkInfo->codeOrigin.bytecodeIndex;

jit.privateCompileClosureCall(callLinkInfo, calleeCodeBlock, expectedStructure, expectedExecutable, codePtr);

}

static void compileGetByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = byValInfo->bytecodeIndex;

jit.privateCompileGetByVal(byValInfo, returnAddress, arrayMode);

}

static void compilePutByVal(VM* vm, CodeBlock* codeBlock, ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)

{

JIT jit(vm, codeBlock);

jit.m_bytecodeOffset = byValInfo->bytecodeIndex;

jit.privateCompilePutByVal(byValInfo, returnAddress, arrayMode);

}

static 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 CodeRef compileCTINativeCall(VM* vm, NativeFunction func)

{

if (!vm->canUseJIT()) {

#if ENABLE(LLINT)

return CodeRef::createLLIntCodeRef(llint_native_call_trampoline);

#else

return CodeRef();

#endif

}

JIT jit(vm, 0);

return jit.privateCompileCTINativeCall(vm, func);

}

static void linkFor(ExecState*, JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, CodePtr, CallLinkInfo*, VM*, CodeSpecializationKind);

static void linkSlowCall(CodeBlock* callerCodeBlock, CallLinkInfo*);

private:

JIT(VM*, CodeBlock* = 0);

void privateCompileMainPass();

void privateCompileLinkPass();

void privateCompileSlowCases();

CompilationResult privateCompile(JITCompilationEffort);

void privateCompileClosureCall(CallLinkInfo*, CodeBlock* calleeCodeBlock, Structure*, ExecutableBase*, MacroAssemblerCodePtr);

void privateCompileGetByVal(ByValInfo*, ReturnAddressPtr, JITArrayMode);

void privateCompilePutByVal(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()));

#if USE(JSVALUE32_64)

unmap();

#else

killLastResultRegister();

#endif

return functionCall;

}

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(JumpList);

void addSlowCase();

void addJump(Jump, int);

void emitJumpSlowToHot(Jump, int);

void compileOpCall(OpcodeID, Instruction*, unsigned callLinkInfoIndex);

void compileOpCallSlowCase(OpcodeID, Instruction*, Vector<SlowCaseEntry>::iterator&, unsigned callLinkInfoIndex);

void compileLoadVarargs(Instruction*);

void compileCallEval(Instruction*);

void compileCallEvalSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitPutCallResult(Instruction*);

enum CompileOpStrictEqType { OpStrictEq, OpNStrictEq };

void compileOpStrictEq(Instruction* instruction, CompileOpStrictEqType type);

bool isOperandConstantImmediateDouble(int src);

void emitLoadDouble(int index, FPRegisterID value);

void emitLoadInt32ToDouble(int index, FPRegisterID value);

Jump emitJumpIfNotObject(RegisterID structureReg);

Jump addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, RegisterID scratch);

void addStructureTransitionCheck(JSCell*, Structure*, StructureStubInfo*, JumpList& failureCases, RegisterID scratch);

void testPrototype(JSValue, JumpList& failureCases, StructureStubInfo*);

enum WriteBarrierMode { UnconditionalWriteBarrier, ShouldFilterImmediates };

// value register in write barrier is used before any scratch registers

// so may safely be the same as either of the scratch registers.

void emitWriteBarrier(RegisterID owner, RegisterID valueTag, RegisterID scratch, RegisterID scratch2, WriteBarrierMode, WriteBarrierUseKind);

void emitWriteBarrier(JSCell* owner, RegisterID value, RegisterID scratch, WriteBarrierMode, WriteBarrierUseKind);

template<typename StructureType> // StructureType can be RegisterID or ImmPtr.

void emitAllocateJSObject(RegisterID allocator, StructureType, RegisterID result, RegisterID scratch);

#if ENABLE(VALUE_PROFILER)

// This assumes that the value to profile is in regT0 and that regT3 is available for

// scratch.

void emitValueProfilingSite(ValueProfile*, RegisterID);

void emitValueProfilingSite(unsigned bytecodeOffset, RegisterID);

void emitValueProfilingSite(RegisterID);

#else

void emitValueProfilingSite(unsigned, RegisterID) { }

void emitValueProfilingSite(RegisterID) { }

#endif

void emitArrayProfilingSite(RegisterID structureAndIndexingType, RegisterID scratch, ArrayProfile*);

void emitArrayProfilingSiteForBytecodeIndex(RegisterID structureAndIndexingType, RegisterID scratch, unsigned bytecodeIndex);

void emitArrayProfileStoreToHoleSpecialCase(ArrayProfile*);

void emitArrayProfileOutOfBoundsSpecialCase(ArrayProfile*);

JITArrayMode chooseArrayMode(ArrayProfile*);

// Property is in regT1, base is in regT0. regT2 contains indexing type.

// Property is int-checked and zero extended. Base is cell checked.

// Structure is already profiled. Returns the slow cases. Fall-through

// case contains result in regT0, and it is not yet profiled.

JumpList emitInt32GetByVal(Instruction* instruction, PatchableJump& badType) { return emitContiguousGetByVal(instruction, badType, Int32Shape); }

JumpList emitDoubleGetByVal(Instruction*, PatchableJump& badType);

JumpList emitContiguousGetByVal(Instruction*, PatchableJump& badType, IndexingType expectedShape = ContiguousShape);

JumpList emitArrayStorageGetByVal(Instruction*, PatchableJump& badType);

JumpList emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType);

JumpList emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType);

// Property is in regT0, base is in regT0. regT2 contains indecing type.

// The value to store is not yet loaded. Property is int-checked and

// zero-extended. Base is cell checked. Structure is already profiled.

// returns the slow cases.

JumpList emitInt32PutByVal(Instruction* currentInstruction, PatchableJump& badType)

{

return emitGenericContiguousPutByVal(currentInstruction, badType, Int32Shape);

}

JumpList emitDoublePutByVal(Instruction* currentInstruction, PatchableJump& badType)

{

return emitGenericContiguousPutByVal(currentInstruction, badType, DoubleShape);

}

JumpList emitContiguousPutByVal(Instruction* currentInstruction, PatchableJump& badType)

{

return emitGenericContiguousPutByVal(currentInstruction, badType);

}

JumpList emitGenericContiguousPutByVal(Instruction*, PatchableJump& badType, IndexingType indexingShape = ContiguousShape);

JumpList emitArrayStoragePutByVal(Instruction*, PatchableJump& badType);

JumpList emitIntTypedArrayPutByVal(Instruction*, PatchableJump& badType, TypedArrayType);

JumpList emitFloatTypedArrayPutByVal(Instruction*, PatchableJump& badType, TypedArrayType);

enum FinalObjectMode { MayBeFinal, KnownNotFinal };

#if USE(JSVALUE32_64)

bool getOperandConstantImmediateInt(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 emitStoreAndMapInt32(int index, RegisterID tag, RegisterID payload, bool indexIsInt32, size_t opcodeLength);

void emitStoreCell(int index, RegisterID payload, bool indexIsCell = false);

void emitStoreBool(int index, RegisterID payload, bool indexIsBool = false);

void emitStoreDouble(int index, FPRegisterID value);

bool isLabeled(unsigned bytecodeOffset);

void map(unsigned bytecodeOffset, int virtualRegisterIndex, RegisterID tag, RegisterID payload);

void unmap(RegisterID);

void unmap();

bool isMapped(int virtualRegisterIndex);

bool getMappedPayload(int virtualRegisterIndex, RegisterID& payload);

bool getMappedTag(int virtualRegisterIndex, RegisterID& tag);

void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex);

void emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex, RegisterID tag);

void compileGetByIdHotPath(const Identifier*);

void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, PropertyOffset cachedOffset);

void compileGetDirectOffset(JSObject* base, RegisterID resultTag, RegisterID resultPayload, PropertyOffset cachedOffset);

void compileGetDirectOffset(RegisterID base, RegisterID resultTag, RegisterID resultPayload, RegisterID offset, FinalObjectMode = MayBeFinal);

void compilePutDirectOffset(RegisterID base, RegisterID valueTag, RegisterID valuePayload, PropertyOffset cachedOffset);

// Arithmetic opcode helpers

void emitAdd32Constant(int dst, int op, int32_t constant, ResultType opType);

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);

}

int32_t getConstantOperandImmediateInt(int src);

void killLastResultRegister();

Jump emitJumpIfJSCell(RegisterID);

Jump emitJumpIfBothJSCells(RegisterID, RegisterID, RegisterID);

void emitJumpSlowCaseIfJSCell(RegisterID);

void emitJumpSlowCaseIfNotJSCell(RegisterID);

void emitJumpSlowCaseIfNotJSCell(RegisterID, int VReg);

Jump emitJumpIfImmediateInteger(RegisterID);

Jump emitJumpIfNotImmediateInteger(RegisterID);

Jump emitJumpIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID);

void emitJumpSlowCaseIfNotImmediateInteger(RegisterID);

void emitJumpSlowCaseIfNotImmediateNumber(RegisterID);

void emitJumpSlowCaseIfNotImmediateIntegers(RegisterID, RegisterID, RegisterID);

void emitFastArithReTagImmediate(RegisterID src, RegisterID dest);

void emitTagAsBoolImmediate(RegisterID reg);

void compileBinaryArithOp(OpcodeID, int dst, int src1, int src2, OperandTypes opi);

void compileBinaryArithOpSlowCase(Instruction*, OpcodeID, Vector<SlowCaseEntry>::iterator&, int dst, int src1, int src2, OperandTypes, bool op1HasImmediateIntFastCase, bool op2HasImmediateIntFastCase);

void compileGetByIdHotPath(int baseVReg, const Identifier*);

void compileGetDirectOffset(RegisterID base, RegisterID result, PropertyOffset cachedOffset);

void compileGetDirectOffset(JSObject* base, RegisterID result, PropertyOffset cachedOffset);

void compileGetDirectOffset(RegisterID base, RegisterID result, RegisterID offset, RegisterID scratch, FinalObjectMode = MayBeFinal);

void compilePutDirectOffset(RegisterID base, RegisterID value, PropertyOffset cachedOffset);

#endif // USE(JSVALUE32_64)

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<SlowCaseEntry>::iterator&);

void emit_op_add(Instruction*);

void emit_op_bitand(Instruction*);

void emit_op_bitor(Instruction*);

void emit_op_bitxor(Instruction*);

void emit_op_call(Instruction*);

void emit_op_call_eval(Instruction*);

void emit_op_call_varargs(Instruction*);

void emit_op_catch(Instruction*);

void emit_op_construct(Instruction*);

void emit_op_get_callee(Instruction*);

void emit_op_create_this(Instruction*);

void emit_op_to_this(Instruction*);

void emit_op_create_arguments(Instruction*);

void emit_op_debug(Instruction*);

void emit_op_del_by_id(Instruction*);

void emit_op_div(Instruction*);

void emit_op_end(Instruction*);

void emit_op_enter(Instruction*);

void emit_op_create_activation(Instruction*);

void emit_op_eq(Instruction*);

void emit_op_eq_null(Instruction*);

void emit_op_get_by_id(Instruction*);

void emit_op_get_arguments_length(Instruction*);

void emit_op_get_by_val(Instruction*);

void emit_op_get_argument_by_val(Instruction*);

void emit_op_get_by_pname(Instruction*);

void emit_op_init_lazy_reg(Instruction*);

void emit_op_check_has_instance(Instruction*);

void emit_op_instanceof(Instruction*);

void emit_op_is_undefined(Instruction*);

void emit_op_is_boolean(Instruction*);

void emit_op_is_number(Instruction*);

void emit_op_is_string(Instruction*);

void emit_op_jeq_null(Instruction*);

void emit_op_jfalse(Instruction*);

void emit_op_jmp(Instruction*);

void emit_op_jneq_null(Instruction*);

void emit_op_jneq_ptr(Instruction*);

void emit_op_jless(Instruction*);

void emit_op_jlesseq(Instruction*);

void emit_op_jgreater(Instruction*);

void emit_op_jgreatereq(Instruction*);

void emit_op_jnless(Instruction*);

void emit_op_jnlesseq(Instruction*);

void emit_op_jngreater(Instruction*);

void emit_op_jngreatereq(Instruction*);

void emit_op_jtrue(Instruction*);

void emit_op_loop_hint(Instruction*);

void emit_op_lshift(Instruction*);

void emit_op_mod(Instruction*);

void emit_op_mov(Instruction*);

void emit_op_mul(Instruction*);

void emit_op_negate(Instruction*);

void emit_op_neq(Instruction*);

void emit_op_neq_null(Instruction*);

void emit_op_new_array(Instruction*);

void emit_op_new_array_with_size(Instruction*);

void emit_op_new_array_buffer(Instruction*);

void emit_op_new_func(Instruction*);

void emit_op_new_func_exp(Instruction*);

void emit_op_new_object(Instruction*);

void emit_op_new_regexp(Instruction*);

void emit_op_get_pnames(Instruction*);

void emit_op_next_pname(Instruction*);

void emit_op_not(Instruction*);

void emit_op_nstricteq(Instruction*);

void emit_op_pop_scope(Instruction*);

void emit_op_dec(Instruction*);

void emit_op_inc(Instruction*);

void emit_op_profile_did_call(Instruction*);

void emit_op_profile_will_call(Instruction*);

void emit_op_push_name_scope(Instruction*);

void emit_op_push_with_scope(Instruction*);

void emit_op_put_by_id(Instruction*);

void emit_op_put_by_index(Instruction*);

void emit_op_put_by_val(Instruction*);

void emit_op_put_getter_setter(Instruction*);

void emit_op_init_global_const(Instruction*);

void emit_op_ret(Instruction*);

void emit_op_ret_object_or_this(Instruction*);

void emit_op_rshift(Instruction*);

void emit_op_strcat(Instruction*);

void emit_op_stricteq(Instruction*);

void emit_op_sub(Instruction*);

void emit_op_switch_char(Instruction*);

void emit_op_switch_imm(Instruction*);

void emit_op_switch_string(Instruction*);

void emit_op_tear_off_activation(Instruction*);

void emit_op_tear_off_arguments(Instruction*);

void emit_op_throw(Instruction*);

void emit_op_throw_static_error(Instruction*);

void emit_op_to_number(Instruction*);

void emit_op_to_primitive(Instruction*);

void emit_op_unexpected_load(Instruction*);

void emit_op_urshift(Instruction*);

void emitSlow_op_add(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_bitand(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_to_this(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_create_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_callee(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_by_id(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_arguments_length(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_argument_by_val(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_by_pname(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_check_has_instance(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_instanceof(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jfalse(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jless(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jlesseq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jgreater(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jgreatereq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jnless(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jnlesseq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jngreater(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jngreatereq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_jtrue(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_loop_hint(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_lshift(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_new_object(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_not(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_nstricteq(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_dec(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_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_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_number(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_to_primitive(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_urshift(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emit_op_resolve_scope(Instruction*);

void emit_op_get_from_scope(Instruction*);

void emit_op_put_to_scope(Instruction*);

void emitSlow_op_resolve_scope(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_get_from_scope(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitSlow_op_put_to_scope(Instruction*, Vector<SlowCaseEntry>::iterator&);

void emitRightShift(Instruction*, bool isUnsigned);

void emitRightShiftSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator&, bool isUnsigned);

void emitVarInjectionCheck(bool needsVarInjectionChecks);

void emitResolveClosure(int dst, bool needsVarInjectionChecks, unsigned depth);

void emitLoadWithStructureCheck(int scope, Structure** structureSlot);

void emitGetGlobalProperty(uintptr_t* operandSlot);

void emitGetGlobalVar(uintptr_t operand);

void emitGetClosureVar(int scope, uintptr_t operand);

void emitPutGlobalProperty(uintptr_t* operandSlot, int value);

void emitPutGlobalVar(uintptr_t operand, int value);

void emitPutClosureVar(int scope, uintptr_t operand, int value);

void emitInitRegister(int dst);

void emitPutIntToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry);

void emitGetFromCallFrameHeaderPtr(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister);

void emitGetFromCallFrameHeader32(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister);

#if USE(JSVALUE64)

void emitGetFromCallFrameHeader64(JSStack::CallFrameHeaderEntry, RegisterID to, RegisterID from = callFrameRegister);

#endif

JSValue getConstantOperand(int src);

bool isOperandConstantImmediateInt(int src);

bool isOperandConstantImmediateChar(int src);

bool atJumpTarget();

Jump getSlowCase(Vector<SlowCaseEntry>::iterator& iter)

{

return iter++->from;

}

void linkSlowCase(Vector<SlowCaseEntry>::iterator& iter)

{

iter->from.link(this);

++iter;

}

void linkDummySlowCase(Vector<SlowCaseEntry>::iterator& iter)

{

ASSERT(!iter->from.isSet());

++iter;

}

void linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator&, int virtualRegisterIndex);

MacroAssembler::Call appendCallWithExceptionCheck(const FunctionPtr&);

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_ESt, Structure*);

MacroAssembler::Call callOperation(C_JITOperation_EZ, int32_t);

MacroAssembler::Call callOperation(F_JITOperation_EJJZ, GPRReg, GPRReg, 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(J_JITOperation_EJ, int, GPRReg);

#if USE(JSVALUE64)

MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, StringImpl*);

#else

MacroAssembler::Call callOperation(WithProfileTag, J_JITOperation_ESsiJI, int, StructureStubInfo*, GPRReg, GPRReg, StringImpl*);

#endif

MacroAssembler::Call callOperation(J_JITOperation_EJIdc, int, GPRReg, const Identifier*);

MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg);

#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_EZ, int, int32_t);

MacroAssembler::Call callOperation(P_JITOperation_EJS, GPRReg, size_t);

MacroAssembler::Call callOperation(P_JITOperation_EZ, int32_t);

MacroAssembler::Call callOperation(S_JITOperation_ECC, RegisterID, RegisterID);

MacroAssembler::Call callOperation(S_JITOperation_EJ, RegisterID);

MacroAssembler::Call callOperation(S_JITOperation_EJJ, RegisterID, RegisterID);

MacroAssembler::Call callOperation(S_JITOperation_EOJss, RegisterID, RegisterID);

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_ECICC, RegisterID, const Identifier*, RegisterID, RegisterID);

MacroAssembler::Call callOperation(V_JITOperation_EIdJZ, const Identifier*, RegisterID, int32_t);

MacroAssembler::Call callOperation(V_JITOperation_EJ, RegisterID);

#if USE(JSVALUE64)

MacroAssembler::Call callOperationNoExceptionCheck(V_JITOperation_EJ, RegisterID);

#else

MacroAssembler::Call callOperationNoExceptionCheck(V_JITOperation_EJ, RegisterID, RegisterID);

#endif

MacroAssembler::Call callOperation(V_JITOperation_EJIdJJ, RegisterID, const Identifier*, RegisterID, RegisterID);

#if USE(JSVALUE64)

MacroAssembler::Call callOperation(V_JITOperation_ESsiJJI, StructureStubInfo*, RegisterID, RegisterID, StringImpl*);

#else

MacroAssembler::Call callOperation(V_JITOperation_ESsiJJI, StructureStubInfo*, RegisterID, RegisterID, RegisterID, RegisterID, StringImpl*);

#endif

MacroAssembler::Call callOperation(V_JITOperation_EJJJ, RegisterID, RegisterID, RegisterID);

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 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_EJJZ, GPRReg, GPRReg, GPRReg, GPRReg, 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_EJIdc, int, GPRReg, GPRReg, const Identifier*);

MacroAssembler::Call callOperation(J_JITOperation_EJJ, int, GPRReg, GPRReg, GPRReg, GPRReg);

MacroAssembler::Call callOperation(P_JITOperation_EJS, GPRReg, GPRReg, size_t);

MacroAssembler::Call callOperation(S_JITOperation_EJ, RegisterID, RegisterID);

MacroAssembler::Call callOperation(S_JITOperation_EJJ, RegisterID, RegisterID, RegisterID, RegisterID);

MacroAssembler::Call callOperation(V_JITOperation_EIdJZ, const Identifier*, RegisterID, RegisterID, int32_t);

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_EJZ, RegisterID, RegisterID, int32_t);

MacroAssembler::Call callOperation(V_JITOperation_EJZJ, RegisterID, RegisterID, int32_t, RegisterID, RegisterID);

#endif

Jump checkStructure(RegisterID reg, Structure* structure);

void updateTopCallFrame();

Call emitNakedCall(CodePtr function = CodePtr());

// Loads the character value of a single character string into dst.

void emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures);

#if ENABLE(DFG_JIT)

void emitEnterOptimizationCheck();

#else

void emitEnterOptimizationCheck() { }

#endif

#ifndef NDEBUG

void printBytecodeOperandTypes(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

Interpreter* m_interpreter;

Vector<CallRecord> m_calls;

Vector<Label> m_labels;

Vector<JITGetByIdGenerator> m_getByIds;

Vector<JITPutByIdGenerator> m_putByIds;

Vector<ByValCompilationInfo> m_byValCompilationInfo;

Vector<StructureStubCompilationInfo> m_callStructureStubCompilationInfo;

Vector<JumpTable> m_jmpTable;

unsigned m_bytecodeOffset;

Vector<SlowCaseEntry> m_slowCases;

Vector<SwitchRecord> m_switches;

JumpList m_exceptionChecks;

JumpList m_exceptionChecksWithCallFrameRollback;

unsigned m_getByIdIndex;

unsigned m_putByIdIndex;

unsigned m_byValInstructionIndex;

unsigned m_callLinkInfoIndex;

#if USE(JSVALUE32_64)

unsigned m_jumpTargetIndex;

unsigned m_mappedBytecodeOffset;

int m_mappedVirtualRegisterIndex;

RegisterID m_mappedTag;

RegisterID m_mappedPayload;

#else

int m_lastResultBytecodeRegister;

#endif

unsigned m_jumpTargetsPosition;

OwnPtr<JITDisassembler> m_disassembler;

RefPtr<Profiler::Compilation> m_compilation;

WeakRandom m_randomGenerator;

static CodeRef stringGetByValStubGenerator(VM*);

#if ENABLE(VALUE_PROFILER)

bool m_canBeOptimized;

bool m_canBeOptimizedOrInlined;

bool m_shouldEmitProfiling;

#endif

} JIT_CLASS_ALIGNMENT;

} // namespace JSC

#endif // ENABLE(JIT)

#endif // JIT_h