/*
- * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2009, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include "GetterSetter.h"
#include "Interpreter.h"
#include "JITInlines.h"
-#include "JITStubCall.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "JSPropertyNameIterator.h"
#include "SamplingTool.h"
#include <wtf/StringPrintStream.h>
-#ifndef NDEBUG
-#include <stdio.h>
-#endif
-
-using namespace std;
namespace JSC {
#if USE(JSVALUE64)
JIT::CodeRef JIT::stringGetByValStubGenerator(VM* vm)
{
- JSInterfaceJIT jit;
+ JSInterfaceJIT jit(vm);
JumpList failures;
- failures.append(jit.branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(vm->stringStructure.get())));
+ failures.append(JSC::branchStructure(jit,
+ NotEqual,
+ Address(regT0, JSCell::structureIDOffset()),
+ vm->stringStructure.get()));
// Load string length to regT2, and start the process of loading the data pointer into regT0
jit.load32(Address(regT0, ThunkHelpers::jsStringLengthOffset()), regT2);
jit.move(TrustedImm32(0), regT0);
jit.ret();
- LinkBuffer patchBuffer(*vm, &jit, GLOBAL_THUNK_ID);
+ LinkBuffer patchBuffer(*vm, jit, GLOBAL_THUNK_ID);
return FINALIZE_CODE(patchBuffer, ("String get_by_val stub"));
}
void JIT::emit_op_get_by_val(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned base = currentInstruction[2].u.operand;
- unsigned property = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
emitGetVirtualRegisters(base, regT0, property, regT1);
zeroExtend32ToPtr(regT1, regT1);
emitJumpSlowCaseIfNotJSCell(regT0, base);
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- emitArrayProfilingSite(regT2, regT3, profile);
+ emitArrayProfilingSiteWithCell(regT0, regT2, profile);
and32(TrustedImm32(IndexingShapeMask), regT2);
PatchableJump badType;
Label done = label();
-#if !ASSERT_DISABLED
- Jump resultOK = branchTest64(NonZero, regT0);
- breakpoint();
- resultOK.link(this);
-#endif
+ if (!ASSERT_DISABLED) {
+ Jump resultOK = branchTest64(NonZero, regT0);
+ abortWithReason(JITGetByValResultIsNotEmpty);
+ resultOK.link(this);
+ }
emitValueProfilingSite();
emitPutVirtualRegister(dst);
void JIT::emitSlow_op_get_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned base = currentInstruction[2].u.operand;
- unsigned property = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
linkSlowCase(iter); // property int32 check
linkSlowCaseIfNotJSCell(iter, base); // base cell check
Jump nonCell = jump();
linkSlowCase(iter); // base array check
- Jump notString = branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get()));
+ Jump notString = branchStructure(NotEqual,
+ Address(regT0, JSCell::structureIDOffset()),
+ m_vm->stringStructure.get());
emitNakedCall(CodeLocationLabel(m_vm->getCTIStub(stringGetByValStubGenerator).code()));
Jump failed = branchTest64(Zero, regT0);
emitPutVirtualRegister(dst, regT0);
Label slowPath = label();
- JITStubCall stubCall(this, cti_op_get_by_val);
- stubCall.addArgument(base, regT2);
- stubCall.addArgument(property, regT2);
- Call call = stubCall.call(dst);
+ emitGetVirtualRegister(base, regT0);
+ emitGetVirtualRegister(property, regT1);
+ Call call = callOperation(operationGetByValDefault, dst, regT0, regT1);
m_byValCompilationInfo[m_byValInstructionIndex].slowPathTarget = slowPath;
m_byValCompilationInfo[m_byValInstructionIndex].returnAddress = call;
addPtr(TrustedImm32(JSObject::offsetOfInlineStorage() - (firstOutOfLineOffset - 2) * sizeof(EncodedJSValue)), base, scratch);
done.link(this);
} else {
-#if !ASSERT_DISABLED
- Jump isOutOfLine = branch32(GreaterThanOrEqual, offset, TrustedImm32(firstOutOfLineOffset));
- breakpoint();
- isOutOfLine.link(this);
-#endif
+ if (!ASSERT_DISABLED) {
+ Jump isOutOfLine = branch32(GreaterThanOrEqual, offset, TrustedImm32(firstOutOfLineOffset));
+ abortWithReason(JITOffsetIsNotOutOfLine);
+ isOutOfLine.link(this);
+ }
loadPtr(Address(base, JSObject::butterflyOffset()), scratch);
neg32(offset);
}
void JIT::emit_op_get_by_pname(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned base = currentInstruction[2].u.operand;
- unsigned property = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
unsigned expected = currentInstruction[4].u.operand;
- unsigned iter = currentInstruction[5].u.operand;
- unsigned i = currentInstruction[6].u.operand;
+ int iter = currentInstruction[5].u.operand;
+ int i = currentInstruction[6].u.operand;
emitGetVirtualRegister(property, regT0);
addSlowCase(branch64(NotEqual, regT0, addressFor(expected)));
emitJumpSlowCaseIfNotJSCell(regT0, base);
// Test base's structure
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ emitLoadStructure(regT0, regT2, regT3);
addSlowCase(branchPtr(NotEqual, regT2, Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure))));
load32(addressFor(i), regT3);
sub32(TrustedImm32(1), regT3);
void JIT::emitSlow_op_get_by_pname(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned base = currentInstruction[2].u.operand;
- unsigned property = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
linkSlowCase(iter);
linkSlowCaseIfNotJSCell(iter, base);
linkSlowCase(iter);
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_get_by_val_generic);
- stubCall.addArgument(base, regT2);
- stubCall.addArgument(property, regT2);
- stubCall.call(dst);
+ emitGetVirtualRegister(base, regT0);
+ emitGetVirtualRegister(property, regT1);
+ callOperation(operationGetByValGeneric, dst, regT0, regT1);
}
void JIT::emit_op_put_by_val(Instruction* currentInstruction)
{
- unsigned base = currentInstruction[1].u.operand;
- unsigned property = currentInstruction[2].u.operand;
+ int base = currentInstruction[1].u.operand;
+ int property = currentInstruction[2].u.operand;
ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
emitGetVirtualRegisters(base, regT0, property, regT1);
// See comment in op_get_by_val.
zeroExtend32ToPtr(regT1, regT1);
emitJumpSlowCaseIfNotJSCell(regT0, base);
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- emitArrayProfilingSite(regT2, regT3, profile);
+ emitArrayProfilingSiteWithCell(regT0, regT2, profile);
and32(TrustedImm32(IndexingShapeMask), regT2);
PatchableJump badType;
m_byValCompilationInfo.append(ByValCompilationInfo(m_bytecodeOffset, badType, mode, done));
- emitWriteBarrier(regT0, regT3, regT1, regT3, ShouldFilterImmediates, WriteBarrierForPropertyAccess);
}
JIT::JumpList JIT::emitGenericContiguousPutByVal(Instruction* currentInstruction, PatchableJump& badType, IndexingType indexingShape)
{
- unsigned value = currentInstruction[3].u.operand;
+ int value = currentInstruction[3].u.operand;
ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
JumpList slowCases;
}
case ContiguousShape:
store64(regT3, BaseIndex(regT2, regT1, TimesEight));
+ emitWriteBarrier(currentInstruction[1].u.operand, value, ShouldFilterValue);
break;
default:
CRASH();
JIT::JumpList JIT::emitArrayStoragePutByVal(Instruction* currentInstruction, PatchableJump& badType)
{
- unsigned value = currentInstruction[3].u.operand;
+ int value = currentInstruction[3].u.operand;
ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
JumpList slowCases;
Label storeResult(this);
emitGetVirtualRegister(value, regT3);
store64(regT3, BaseIndex(regT2, regT1, TimesEight, OBJECT_OFFSETOF(ArrayStorage, m_vector[0])));
+ emitWriteBarrier(currentInstruction[1].u.operand, value, ShouldFilterValue);
Jump end = jump();
empty.link(this);
void JIT::emitSlow_op_put_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned base = currentInstruction[1].u.operand;
- unsigned property = currentInstruction[2].u.operand;
- unsigned value = currentInstruction[3].u.operand;
+ int base = currentInstruction[1].u.operand;
+ int property = currentInstruction[2].u.operand;
+ int value = currentInstruction[3].u.operand;
ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
linkSlowCase(iter); // property int32 check
Label slowPath = label();
- JITStubCall stubPutByValCall(this, cti_op_put_by_val);
- stubPutByValCall.addArgument(regT0);
- stubPutByValCall.addArgument(property, regT2);
- stubPutByValCall.addArgument(value, regT2);
- Call call = stubPutByValCall.call();
+ emitGetVirtualRegister(property, regT1);
+ emitGetVirtualRegister(value, regT2);
+ bool isDirect = m_interpreter->getOpcodeID(currentInstruction->u.opcode) == op_put_by_val_direct;
+ Call call = callOperation(isDirect ? operationDirectPutByVal : operationPutByVal, regT0, regT1, regT2);
m_byValCompilationInfo[m_byValInstructionIndex].slowPathTarget = slowPath;
m_byValCompilationInfo[m_byValInstructionIndex].returnAddress = call;
void JIT::emit_op_put_by_index(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_put_by_index);
- stubCall.addArgument(currentInstruction[1].u.operand, regT2);
- stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
- stubCall.addArgument(currentInstruction[3].u.operand, regT2);
- stubCall.call();
+ emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
+ emitGetVirtualRegister(currentInstruction[3].u.operand, regT1);
+ callOperation(operationPutByIndex, regT0, currentInstruction[2].u.operand, regT1);
}
void JIT::emit_op_put_getter_setter(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_put_getter_setter);
- stubCall.addArgument(currentInstruction[1].u.operand, regT2);
- stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.addArgument(currentInstruction[3].u.operand, regT2);
- stubCall.addArgument(currentInstruction[4].u.operand, regT2);
- stubCall.call();
+ emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
+ emitGetVirtualRegister(currentInstruction[3].u.operand, regT1);
+ emitGetVirtualRegister(currentInstruction[4].u.operand, regT2);
+ callOperation(operationPutGetterSetter, regT0, &m_codeBlock->identifier(currentInstruction[2].u.operand), regT1, regT2);
}
void JIT::emit_op_del_by_id(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_del_by_id);
- stubCall.addArgument(currentInstruction[2].u.operand, regT2);
- stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
+ emitGetVirtualRegister(base, regT0);
+ callOperation(operationDeleteById, dst, regT0, &m_codeBlock->identifier(property));
}
void JIT::emit_op_get_by_id(Instruction* currentInstruction)
{
- unsigned resultVReg = currentInstruction[1].u.operand;
- unsigned baseVReg = currentInstruction[2].u.operand;
- Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
+ int resultVReg = currentInstruction[1].u.operand;
+ int baseVReg = currentInstruction[2].u.operand;
+ const Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
emitGetVirtualRegister(baseVReg, regT0);
- compileGetByIdHotPath(baseVReg, ident);
- emitValueProfilingSite();
- emitPutVirtualRegister(resultVReg);
-}
-
-void JIT::compileGetByIdHotPath(int baseVReg, Identifier* ident)
-{
- // As for put_by_id, get_by_id requires the offset of the Structure and the offset of the access to be patched.
- // Additionally, for get_by_id we need patch the offset of the branch to the slow case (we patch this to jump
- // to array-length / prototype access tranpolines, and finally we also the the property-map access offset as a label
- // to jump back to if one of these trampolies finds a match.
-
+
emitJumpSlowCaseIfNotJSCell(regT0, baseVReg);
- if (*ident == m_vm->propertyNames->length && shouldEmitProfiling()) {
- loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
- emitArrayProfilingSiteForBytecodeIndex(regT1, regT2, m_bytecodeOffset);
- }
-
- BEGIN_UNINTERRUPTED_SEQUENCE(sequenceGetByIdHotPath);
-
- Label hotPathBegin(this);
-
- DataLabelPtr structureToCompare;
- PatchableJump structureCheck = patchableBranchPtrWithPatch(NotEqual, Address(regT0, JSCell::structureOffset()), structureToCompare, TrustedImmPtr(reinterpret_cast<void*>(patchGetByIdDefaultStructure)));
- addSlowCase(structureCheck);
+ if (*ident == m_vm->propertyNames->length && shouldEmitProfiling())
+ emitArrayProfilingSiteForBytecodeIndexWithCell(regT0, regT1, m_bytecodeOffset);
- ConvertibleLoadLabel propertyStorageLoad = convertibleLoadPtr(Address(regT0, JSObject::butterflyOffset()), regT0);
- DataLabelCompact displacementLabel = load64WithCompactAddressOffsetPatch(Address(regT0, patchGetByIdDefaultOffset), regT0);
+ JITGetByIdGenerator gen(
+ m_codeBlock, CodeOrigin(m_bytecodeOffset), RegisterSet::specialRegisters(),
+ JSValueRegs(regT0), JSValueRegs(regT0), DontSpill);
+ gen.generateFastPath(*this);
+ addSlowCase(gen.slowPathJump());
+ m_getByIds.append(gen);
- Label putResult(this);
-
- END_UNINTERRUPTED_SEQUENCE(sequenceGetByIdHotPath);
-
- m_propertyAccessCompilationInfo.append(PropertyStubCompilationInfo(PropertyStubGetById, m_bytecodeOffset, hotPathBegin, structureToCompare, structureCheck, propertyStorageLoad, displacementLabel, putResult));
-}
-
-void JIT::emitSlow_op_get_by_id(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned resultVReg = currentInstruction[1].u.operand;
- unsigned baseVReg = currentInstruction[2].u.operand;
- Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
-
- compileGetByIdSlowCase(resultVReg, baseVReg, ident, iter);
emitValueProfilingSite();
+ emitPutVirtualRegister(resultVReg);
}
-void JIT::compileGetByIdSlowCase(int resultVReg, int baseVReg, Identifier* ident, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_get_by_id(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- // As for the hot path of get_by_id, above, we ensure that we can use an architecture specific offset
- // so that we only need track one pointer into the slow case code - we track a pointer to the location
- // of the call (which we can use to look up the patch information), but should a array-length or
- // prototype access trampoline fail we want to bail out back to here. To do so we can subtract back
- // the distance from the call to the head of the slow case.
+ int resultVReg = currentInstruction[1].u.operand;
+ int baseVReg = currentInstruction[2].u.operand;
+ const Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
linkSlowCaseIfNotJSCell(iter, baseVReg);
linkSlowCase(iter);
- BEGIN_UNINTERRUPTED_SEQUENCE(sequenceGetByIdSlowCase);
-
- Label coldPathBegin(this);
- JITStubCall stubCall(this, cti_op_get_by_id);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(ident));
- Call call = stubCall.call(resultVReg);
-
- END_UNINTERRUPTED_SEQUENCE(sequenceGetByIdSlowCase);
+ JITGetByIdGenerator& gen = m_getByIds[m_getByIdIndex++];
+
+ Label coldPathBegin = label();
+
+ Call call = callOperation(WithProfile, operationGetByIdOptimize, resultVReg, gen.stubInfo(), regT0, ident->impl());
- // Track the location of the call; this will be used to recover patch information.
- m_propertyAccessCompilationInfo[m_propertyAccessInstructionIndex++].slowCaseInfo(PropertyStubGetById, coldPathBegin, call);
+ gen.reportSlowPathCall(coldPathBegin, call);
}
void JIT::emit_op_put_by_id(Instruction* currentInstruction)
{
- unsigned baseVReg = currentInstruction[1].u.operand;
- unsigned valueVReg = currentInstruction[3].u.operand;
+ int baseVReg = currentInstruction[1].u.operand;
+ int valueVReg = currentInstruction[3].u.operand;
+ unsigned direct = currentInstruction[8].u.operand;
+
+ emitWriteBarrier(baseVReg, valueVReg, ShouldFilterBase);
// In order to be able to patch both the Structure, and the object offset, we store one pointer,
// to just after the arguments have been loaded into registers 'hotPathBegin', and we generate code
// Jump to a slow case if either the base object is an immediate, or if the Structure does not match.
emitJumpSlowCaseIfNotJSCell(regT0, baseVReg);
- BEGIN_UNINTERRUPTED_SEQUENCE(sequencePutById);
-
- Label hotPathBegin(this);
-
- // It is important that the following instruction plants a 32bit immediate, in order that it can be patched over.
- DataLabelPtr structureToCompare;
- addSlowCase(branchPtrWithPatch(NotEqual, Address(regT0, JSCell::structureOffset()), structureToCompare, TrustedImmPtr(reinterpret_cast<void*>(patchGetByIdDefaultStructure))));
-
- ConvertibleLoadLabel propertyStorageLoad = convertibleLoadPtr(Address(regT0, JSObject::butterflyOffset()), regT2);
- DataLabel32 displacementLabel = store64WithAddressOffsetPatch(regT1, Address(regT2, patchPutByIdDefaultOffset));
-
- END_UNINTERRUPTED_SEQUENCE(sequencePutById);
-
- emitWriteBarrier(regT0, regT1, regT2, regT3, ShouldFilterImmediates, WriteBarrierForPropertyAccess);
-
- m_propertyAccessCompilationInfo.append(PropertyStubCompilationInfo(PropertyStubPutById, m_bytecodeOffset, hotPathBegin, structureToCompare, propertyStorageLoad, displacementLabel));
+ JITPutByIdGenerator gen(
+ m_codeBlock, CodeOrigin(m_bytecodeOffset), RegisterSet::specialRegisters(),
+ JSValueRegs(regT0), JSValueRegs(regT1), regT2, DontSpill, m_codeBlock->ecmaMode(),
+ direct ? Direct : NotDirect);
+
+ gen.generateFastPath(*this);
+ addSlowCase(gen.slowPathJump());
+
+ m_putByIds.append(gen);
}
void JIT::emitSlow_op_put_by_id(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned baseVReg = currentInstruction[1].u.operand;
- Identifier* ident = &(m_codeBlock->identifier(currentInstruction[2].u.operand));
- unsigned direct = currentInstruction[8].u.operand;
+ int baseVReg = currentInstruction[1].u.operand;
+ const Identifier* ident = &(m_codeBlock->identifier(currentInstruction[2].u.operand));
linkSlowCaseIfNotJSCell(iter, baseVReg);
linkSlowCase(iter);
- JITStubCall stubCall(this, direct ? cti_op_put_by_id_direct : cti_op_put_by_id);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(ident));
- stubCall.addArgument(regT1);
- move(regT0, nonArgGPR1);
- Call call = stubCall.call();
+ Label coldPathBegin(this);
+
+ JITPutByIdGenerator& gen = m_putByIds[m_putByIdIndex++];
- // Track the location of the call; this will be used to recover patch information.
- m_propertyAccessCompilationInfo[m_propertyAccessInstructionIndex++].slowCaseInfo(PropertyStubPutById, call);
+ Call call = callOperation(
+ gen.slowPathFunction(), gen.stubInfo(), regT1, regT0, ident->impl());
+
+ gen.reportSlowPathCall(coldPathBegin, call);
}
// Compile a store into an object's property storage. May overwrite the
load64(Address(result, offsetInButterfly(cachedOffset) * sizeof(WriteBarrier<Unknown>)), result);
}
-void JIT::privateCompilePutByIdTransition(StructureStubInfo* stubInfo, Structure* oldStructure, Structure* newStructure, PropertyOffset cachedOffset, StructureChain* chain, ReturnAddressPtr returnAddress, bool direct)
+void JIT::emitVarInjectionCheck(bool needsVarInjectionChecks)
{
- move(nonArgGPR1, regT0);
-
- JumpList failureCases;
- // Check eax is an object of the right Structure.
- failureCases.append(emitJumpIfNotJSCell(regT0));
- failureCases.append(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(oldStructure)));
-
- testPrototype(oldStructure->storedPrototype(), failureCases, stubInfo);
-
- ASSERT(oldStructure->storedPrototype().isNull() || oldStructure->storedPrototype().asCell()->structure() == chain->head()->get());
-
- // ecx = baseObject->m_structure
- if (!direct) {
- for (WriteBarrier<Structure>* it = chain->head(); *it; ++it) {
- ASSERT((*it)->storedPrototype().isNull() || (*it)->storedPrototype().asCell()->structure() == it[1].get());
- testPrototype((*it)->storedPrototype(), failureCases, stubInfo);
- }
- }
+ if (!needsVarInjectionChecks)
+ return;
+ addSlowCase(branch8(Equal, AbsoluteAddress(m_codeBlock->globalObject()->varInjectionWatchpoint()->addressOfState()), TrustedImm32(IsInvalidated)));
+}
- // If we succeed in all of our checks, and the code was optimizable, then make sure we
- // decrement the rare case counter.
-#if ENABLE(VALUE_PROFILER)
- if (m_codeBlock->canCompileWithDFG() >= DFG::MayInline) {
- sub32(
- TrustedImm32(1),
- AbsoluteAddress(&m_codeBlock->rareCaseProfileForBytecodeOffset(stubInfo->bytecodeIndex)->m_counter));
- }
-#endif
-
- // emit a call only if storage realloc is needed
- bool willNeedStorageRealloc = oldStructure->outOfLineCapacity() != newStructure->outOfLineCapacity();
- if (willNeedStorageRealloc) {
- // This trampoline was called to like a JIT stub; before we can can call again we need to
- // remove the return address from the stack, to prevent the stack from becoming misaligned.
- preserveReturnAddressAfterCall(regT3);
-
- JITStubCall stubCall(this, cti_op_put_by_id_transition_realloc);
- stubCall.skipArgument(); // base
- stubCall.skipArgument(); // ident
- stubCall.skipArgument(); // value
- stubCall.addArgument(TrustedImm32(oldStructure->outOfLineCapacity()));
- stubCall.addArgument(TrustedImmPtr(newStructure));
- stubCall.call(regT0);
- emitGetJITStubArg(2, regT1);
-
- restoreReturnAddressBeforeReturn(regT3);
+void JIT::emitResolveClosure(int dst, bool needsVarInjectionChecks, unsigned depth)
+{
+ emitVarInjectionCheck(needsVarInjectionChecks);
+ emitGetVirtualRegister(JSStack::ScopeChain, regT0);
+ if (m_codeBlock->needsActivation()) {
+ emitGetVirtualRegister(m_codeBlock->activationRegister(), regT1);
+ Jump noActivation = branchTestPtr(Zero, regT1);
+ loadPtr(Address(regT0, JSScope::offsetOfNext()), regT0);
+ noActivation.link(this);
}
+ for (unsigned i = 0; i < depth; ++i)
+ loadPtr(Address(regT0, JSScope::offsetOfNext()), regT0);
+ emitPutVirtualRegister(dst);
+}
- // Planting the new structure triggers the write barrier so we need
- // an unconditional barrier here.
- emitWriteBarrier(regT0, regT1, regT2, regT3, UnconditionalWriteBarrier, WriteBarrierForPropertyAccess);
-
- ASSERT(newStructure->classInfo() == oldStructure->classInfo());
- storePtr(TrustedImmPtr(newStructure), Address(regT0, JSCell::structureOffset()));
- compilePutDirectOffset(regT0, regT1, cachedOffset);
-
- ret();
-
- ASSERT(!failureCases.empty());
- failureCases.link(this);
- restoreArgumentReferenceForTrampoline();
- Call failureCall = tailRecursiveCall();
-
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
-
- patchBuffer.link(failureCall, FunctionPtr(direct ? cti_op_put_by_id_direct_fail : cti_op_put_by_id_fail));
-
- if (willNeedStorageRealloc) {
- ASSERT(m_calls.size() == 1);
- patchBuffer.link(m_calls[0].from, FunctionPtr(cti_op_put_by_id_transition_realloc));
+void JIT::emit_op_resolve_scope(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ ResolveType resolveType = static_cast<ResolveType>(currentInstruction[3].u.operand);
+ unsigned depth = currentInstruction[4].u.operand;
+
+ switch (resolveType) {
+ case GlobalProperty:
+ case GlobalVar:
+ case GlobalPropertyWithVarInjectionChecks:
+ case GlobalVarWithVarInjectionChecks:
+ emitVarInjectionCheck(needsVarInjectionChecks(resolveType));
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ emitPutVirtualRegister(dst);
+ break;
+ case ClosureVar:
+ case ClosureVarWithVarInjectionChecks:
+ emitResolveClosure(dst, needsVarInjectionChecks(resolveType), depth);
+ break;
+ case Dynamic:
+ addSlowCase(jump());
+ break;
}
-
- stubInfo->stubRoutine = createJITStubRoutine(
- FINALIZE_CODE(
- patchBuffer,
- ("Baseline put_by_id transition for %s, return point %p",
- toCString(*m_codeBlock).data(), returnAddress.value())),
- *m_vm,
- m_codeBlock->ownerExecutable(),
- willNeedStorageRealloc,
- newStructure);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relinkCallerToTrampoline(returnAddress, CodeLocationLabel(stubInfo->stubRoutine->code().code()));
}
-void JIT::patchGetByIdSelf(CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress)
+void JIT::emitSlow_op_resolve_scope(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- RepatchBuffer repatchBuffer(codeBlock);
+ int dst = currentInstruction[1].u.operand;
+ ResolveType resolveType = static_cast<ResolveType>(currentInstruction[3].u.operand);
- // We don't want to patch more than once - in future go to cti_op_get_by_id_generic.
- // Should probably go to cti_op_get_by_id_fail, but that doesn't do anything interesting right now.
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(cti_op_get_by_id_self_fail));
+ if (resolveType == GlobalProperty || resolveType == GlobalVar || resolveType == ClosureVar)
+ return;
- // Patch the offset into the propoerty map to load from, then patch the Structure to look for.
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabelPtrAtOffset(stubInfo->patch.baseline.u.get.structureToCompare), structure);
- repatchBuffer.setLoadInstructionIsActive(stubInfo->hotPathBegin.convertibleLoadAtOffset(stubInfo->patch.baseline.u.get.propertyStorageLoad), isOutOfLineOffset(cachedOffset));
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabelCompactAtOffset(stubInfo->patch.baseline.u.get.displacementLabel), offsetRelativeToPatchedStorage(cachedOffset));
+ linkSlowCase(iter);
+ int32_t indentifierIndex = currentInstruction[2].u.operand;
+ callOperation(operationResolveScope, dst, indentifierIndex);
}
-void JIT::patchPutByIdReplace(CodeBlock* codeBlock, StructureStubInfo* stubInfo, Structure* structure, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress, bool direct)
+void JIT::emitLoadWithStructureCheck(int scope, Structure** structureSlot)
{
- RepatchBuffer repatchBuffer(codeBlock);
-
- // We don't want to patch more than once - in future go to cti_op_put_by_id_generic.
- // Should probably go to cti_op_put_by_id_fail, but that doesn't do anything interesting right now.
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(direct ? cti_op_put_by_id_direct_generic : cti_op_put_by_id_generic));
-
- // Patch the offset into the propoerty map to load from, then patch the Structure to look for.
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabelPtrAtOffset(stubInfo->patch.baseline.u.put.structureToCompare), structure);
- repatchBuffer.setLoadInstructionIsActive(stubInfo->hotPathBegin.convertibleLoadAtOffset(stubInfo->patch.baseline.u.put.propertyStorageLoad), isOutOfLineOffset(cachedOffset));
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabel32AtOffset(stubInfo->patch.baseline.u.put.displacementLabel), offsetRelativeToPatchedStorage(cachedOffset));
+ emitGetVirtualRegister(scope, regT0);
+ loadPtr(structureSlot, regT1);
+ addSlowCase(branchTestPtr(Zero, regT1));
+ load32(Address(regT1, Structure::structureIDOffset()), regT1);
+ addSlowCase(branch32(NotEqual, Address(regT0, JSCell::structureIDOffset()), regT1));
}
-void JIT::privateCompilePatchGetArrayLength(ReturnAddressPtr returnAddress)
+void JIT::emitGetGlobalProperty(uintptr_t* operandSlot)
{
- StructureStubInfo* stubInfo = &m_codeBlock->getStubInfo(returnAddress);
-
- // Check eax is an array
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- Jump failureCases1 = branchTest32(Zero, regT2, TrustedImm32(IsArray));
- Jump failureCases2 = branchTest32(Zero, regT2, TrustedImm32(IndexingShapeMask));
-
- // Checks out okay! - get the length from the storage
- loadPtr(Address(regT0, JSObject::butterflyOffset()), regT3);
- load32(Address(regT3, ArrayStorage::lengthOffset()), regT2);
- Jump failureCases3 = branch32(LessThan, regT2, TrustedImm32(0));
-
- emitFastArithIntToImmNoCheck(regT2, regT0);
- Jump success = jump();
-
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
-
- // Use the patch information to link the failure cases back to the original slow case routine.
- CodeLocationLabel slowCaseBegin = stubInfo->callReturnLocation.labelAtOffset(-stubInfo->patch.baseline.u.get.coldPathBegin);
- patchBuffer.link(failureCases1, slowCaseBegin);
- patchBuffer.link(failureCases2, slowCaseBegin);
- patchBuffer.link(failureCases3, slowCaseBegin);
-
- // On success return back to the hot patch code, at a point it will perform the store to dest for us.
- patchBuffer.link(success, stubInfo->hotPathBegin.labelAtOffset(stubInfo->patch.baseline.u.get.putResult));
-
- // Track the stub we have created so that it will be deleted later.
- stubInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
- patchBuffer,
- ("Basline JIT get_by_id array length stub for %s, return point %p",
- toCString(*m_codeBlock).data(),
- stubInfo->hotPathBegin.labelAtOffset(
- stubInfo->patch.baseline.u.get.putResult).executableAddress()));
-
- // Finally patch the jump to slow case back in the hot path to jump here instead.
- CodeLocationJump jumpLocation = stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relink(jumpLocation, CodeLocationLabel(stubInfo->stubRoutine->code().code()));
-
- // We don't want to patch more than once - in future go to cti_op_put_by_id_generic.
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(cti_op_get_by_id_array_fail));
+ load32(operandSlot, regT1);
+ compileGetDirectOffset(regT0, regT0, regT1, regT2, KnownNotFinal);
}
-void JIT::privateCompileGetByIdProto(StructureStubInfo* stubInfo, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame)
+void JIT::emitGetGlobalVar(uintptr_t operand)
{
- // The prototype object definitely exists (if this stub exists the CodeBlock is referencing a Structure that is
- // referencing the prototype object - let's speculatively load it's table nice and early!)
- JSObject* protoObject = asObject(structure->prototypeForLookup(callFrame));
-
- // Check eax is an object of the right Structure.
- Jump failureCases1 = checkStructure(regT0, structure);
-
- // Check the prototype object's Structure had not changed.
- Jump failureCases2 = addStructureTransitionCheck(protoObject, prototypeStructure, stubInfo, regT3);
-
- bool needsStubLink = false;
-
- // Checks out okay!
- if (slot.cachedPropertyType() == PropertySlot::Getter) {
- needsStubLink = true;
- compileGetDirectOffset(protoObject, regT1, cachedOffset);
- JITStubCall stubCall(this, cti_op_get_by_id_getter_stub);
- stubCall.addArgument(regT1);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else if (slot.cachedPropertyType() == PropertySlot::Custom) {
- needsStubLink = true;
- JITStubCall stubCall(this, cti_op_get_by_id_custom_stub);
- stubCall.addArgument(TrustedImmPtr(protoObject));
- stubCall.addArgument(TrustedImmPtr(FunctionPtr(slot.customGetter()).executableAddress()));
- stubCall.addArgument(TrustedImmPtr(const_cast<Identifier*>(&ident)));
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else
- compileGetDirectOffset(protoObject, regT0, cachedOffset);
- Jump success = jump();
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
-
- // Use the patch information to link the failure cases back to the original slow case routine.
- CodeLocationLabel slowCaseBegin = stubInfo->callReturnLocation.labelAtOffset(-stubInfo->patch.baseline.u.get.coldPathBegin);
- patchBuffer.link(failureCases1, slowCaseBegin);
- if (failureCases2.isSet())
- patchBuffer.link(failureCases2, slowCaseBegin);
-
- // On success return back to the hot patch code, at a point it will perform the store to dest for us.
- patchBuffer.link(success, stubInfo->hotPathBegin.labelAtOffset(stubInfo->patch.baseline.u.get.putResult));
-
- if (needsStubLink) {
- for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter) {
- if (iter->to)
- patchBuffer.link(iter->from, FunctionPtr(iter->to));
- }
- }
- // Track the stub we have created so that it will be deleted later.
- stubInfo->stubRoutine = createJITStubRoutine(
- FINALIZE_CODE(
- patchBuffer,
- ("Baseline JIT get_by_id proto stub for %s, return point %p",
- toCString(*m_codeBlock).data(), stubInfo->hotPathBegin.labelAtOffset(
- stubInfo->patch.baseline.u.get.putResult).executableAddress())),
- *m_vm,
- m_codeBlock->ownerExecutable(),
- needsStubLink);
-
- // Finally patch the jump to slow case back in the hot path to jump here instead.
- CodeLocationJump jumpLocation = stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relink(jumpLocation, CodeLocationLabel(stubInfo->stubRoutine->code().code()));
-
- // We don't want to patch more than once - in future go to cti_op_put_by_id_generic.
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(cti_op_get_by_id_proto_list));
+ loadPtr(reinterpret_cast<void*>(operand), regT0);
}
-void JIT::privateCompileGetByIdSelfList(StructureStubInfo* stubInfo, PolymorphicAccessStructureList* polymorphicStructures, int currentIndex, Structure* structure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset)
+void JIT::emitGetClosureVar(int scope, uintptr_t operand)
{
- Jump failureCase = checkStructure(regT0, structure);
- bool needsStubLink = false;
- bool isDirect = false;
- if (slot.cachedPropertyType() == PropertySlot::Getter) {
- needsStubLink = true;
- compileGetDirectOffset(regT0, regT1, cachedOffset);
- JITStubCall stubCall(this, cti_op_get_by_id_getter_stub);
- stubCall.addArgument(regT1);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else if (slot.cachedPropertyType() == PropertySlot::Custom) {
- needsStubLink = true;
- JITStubCall stubCall(this, cti_op_get_by_id_custom_stub);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(FunctionPtr(slot.customGetter()).executableAddress()));
- stubCall.addArgument(TrustedImmPtr(const_cast<Identifier*>(&ident)));
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else {
- isDirect = true;
- compileGetDirectOffset(regT0, regT0, cachedOffset);
- }
- Jump success = jump();
-
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
+ emitGetVirtualRegister(scope, regT0);
+ loadPtr(Address(regT0, JSVariableObject::offsetOfRegisters()), regT0);
+ loadPtr(Address(regT0, operand * sizeof(Register)), regT0);
+}
- if (needsStubLink) {
- for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter) {
- if (iter->to)
- patchBuffer.link(iter->from, FunctionPtr(iter->to));
- }
+void JIT::emit_op_get_from_scope(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int scope = currentInstruction[2].u.operand;
+ ResolveType resolveType = ResolveModeAndType(currentInstruction[4].u.operand).type();
+ Structure** structureSlot = currentInstruction[5].u.structure.slot();
+ uintptr_t* operandSlot = reinterpret_cast<uintptr_t*>(¤tInstruction[6].u.pointer);
+
+ switch (resolveType) {
+ case GlobalProperty:
+ case GlobalPropertyWithVarInjectionChecks:
+ emitLoadWithStructureCheck(scope, structureSlot); // Structure check covers var injection.
+ emitGetGlobalProperty(operandSlot);
+ break;
+ case GlobalVar:
+ case GlobalVarWithVarInjectionChecks:
+ emitVarInjectionCheck(needsVarInjectionChecks(resolveType));
+ emitGetGlobalVar(*operandSlot);
+ break;
+ case ClosureVar:
+ case ClosureVarWithVarInjectionChecks:
+ emitVarInjectionCheck(needsVarInjectionChecks(resolveType));
+ emitGetClosureVar(scope, *operandSlot);
+ break;
+ case Dynamic:
+ addSlowCase(jump());
+ break;
}
-
- // Use the patch information to link the failure cases back to the original slow case routine.
- CodeLocationLabel lastProtoBegin = CodeLocationLabel(JITStubRoutine::asCodePtr(polymorphicStructures->list[currentIndex - 1].stubRoutine));
- if (!lastProtoBegin)
- lastProtoBegin = stubInfo->callReturnLocation.labelAtOffset(-stubInfo->patch.baseline.u.get.coldPathBegin);
-
- patchBuffer.link(failureCase, lastProtoBegin);
-
- // On success return back to the hot patch code, at a point it will perform the store to dest for us.
- patchBuffer.link(success, stubInfo->hotPathBegin.labelAtOffset(stubInfo->patch.baseline.u.get.putResult));
-
- RefPtr<JITStubRoutine> stubCode = createJITStubRoutine(
- FINALIZE_CODE(
- patchBuffer,
- ("Baseline JIT get_by_id list stub for %s, return point %p",
- toCString(*m_codeBlock).data(), stubInfo->hotPathBegin.labelAtOffset(
- stubInfo->patch.baseline.u.get.putResult).executableAddress())),
- *m_vm,
- m_codeBlock->ownerExecutable(),
- needsStubLink);
-
- polymorphicStructures->list[currentIndex].set(*m_vm, m_codeBlock->ownerExecutable(), stubCode, structure, isDirect);
-
- // Finally patch the jump to slow case back in the hot path to jump here instead.
- CodeLocationJump jumpLocation = stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relink(jumpLocation, CodeLocationLabel(stubCode->code().code()));
+ emitPutVirtualRegister(dst);
+ emitValueProfilingSite();
}
-void JIT::privateCompileGetByIdProtoList(StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructures, int currentIndex, Structure* structure, Structure* prototypeStructure, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, CallFrame* callFrame)
+void JIT::emitSlow_op_get_from_scope(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- // The prototype object definitely exists (if this stub exists the CodeBlock is referencing a Structure that is
- // referencing the prototype object - let's speculatively load it's table nice and early!)
- JSObject* protoObject = asObject(structure->prototypeForLookup(callFrame));
-
- // Check eax is an object of the right Structure.
- Jump failureCases1 = checkStructure(regT0, structure);
-
- // Check the prototype object's Structure had not changed.
- Jump failureCases2 = addStructureTransitionCheck(protoObject, prototypeStructure, stubInfo, regT3);
-
- // Checks out okay!
- bool needsStubLink = false;
- bool isDirect = false;
- if (slot.cachedPropertyType() == PropertySlot::Getter) {
- needsStubLink = true;
- compileGetDirectOffset(protoObject, regT1, cachedOffset);
- JITStubCall stubCall(this, cti_op_get_by_id_getter_stub);
- stubCall.addArgument(regT1);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else if (slot.cachedPropertyType() == PropertySlot::Custom) {
- needsStubLink = true;
- JITStubCall stubCall(this, cti_op_get_by_id_custom_stub);
- stubCall.addArgument(TrustedImmPtr(protoObject));
- stubCall.addArgument(TrustedImmPtr(FunctionPtr(slot.customGetter()).executableAddress()));
- stubCall.addArgument(TrustedImmPtr(const_cast<Identifier*>(&ident)));
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else {
- isDirect = true;
- compileGetDirectOffset(protoObject, regT0, cachedOffset);
- }
+ int dst = currentInstruction[1].u.operand;
+ ResolveType resolveType = ResolveModeAndType(currentInstruction[4].u.operand).type();
- Jump success = jump();
+ if (resolveType == GlobalVar || resolveType == ClosureVar)
+ return;
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
+ if (resolveType == GlobalProperty || resolveType == GlobalPropertyWithVarInjectionChecks)
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ callOperation(WithProfile, operationGetFromScope, dst, currentInstruction);
+}
- if (needsStubLink) {
- for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter) {
- if (iter->to)
- patchBuffer.link(iter->from, FunctionPtr(iter->to));
- }
- }
+void JIT::emitPutGlobalProperty(uintptr_t* operandSlot, int value)
+{
+ emitGetVirtualRegister(value, regT2);
- // Use the patch information to link the failure cases back to the original slow case routine.
- CodeLocationLabel lastProtoBegin = CodeLocationLabel(JITStubRoutine::asCodePtr(prototypeStructures->list[currentIndex - 1].stubRoutine));
- patchBuffer.link(failureCases1, lastProtoBegin);
- if (failureCases2.isSet())
- patchBuffer.link(failureCases2, lastProtoBegin);
-
- // On success return back to the hot patch code, at a point it will perform the store to dest for us.
- patchBuffer.link(success, stubInfo->hotPathBegin.labelAtOffset(stubInfo->patch.baseline.u.get.putResult));
-
- RefPtr<JITStubRoutine> stubCode = createJITStubRoutine(
- FINALIZE_CODE(
- patchBuffer,
- ("Baseline JIT get_by_id proto list stub for %s, return point %p",
- toCString(*m_codeBlock).data(), stubInfo->hotPathBegin.labelAtOffset(
- stubInfo->patch.baseline.u.get.putResult).executableAddress())),
- *m_vm,
- m_codeBlock->ownerExecutable(),
- needsStubLink);
- prototypeStructures->list[currentIndex].set(*m_vm, m_codeBlock->ownerExecutable(), stubCode, structure, prototypeStructure, isDirect);
-
- // Finally patch the jump to slow case back in the hot path to jump here instead.
- CodeLocationJump jumpLocation = stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relink(jumpLocation, CodeLocationLabel(stubCode->code().code()));
+ loadPtr(Address(regT0, JSObject::butterflyOffset()), regT0);
+ loadPtr(operandSlot, regT1);
+ negPtr(regT1);
+ storePtr(regT2, BaseIndex(regT0, regT1, TimesEight, (firstOutOfLineOffset - 2) * sizeof(EncodedJSValue)));
}
-void JIT::privateCompileGetByIdChainList(StructureStubInfo* stubInfo, PolymorphicAccessStructureList* prototypeStructures, int currentIndex, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, CallFrame* callFrame)
+void JIT::emitNotifyWrite(RegisterID value, RegisterID scratch, VariableWatchpointSet* set)
{
- ASSERT(count);
- JumpList bucketsOfFail;
-
- // Check eax is an object of the right Structure.
- Jump baseObjectCheck = checkStructure(regT0, structure);
- bucketsOfFail.append(baseObjectCheck);
-
- Structure* currStructure = structure;
- WriteBarrier<Structure>* it = chain->head();
- JSObject* protoObject = 0;
- for (unsigned i = 0; i < count; ++i, ++it) {
- protoObject = asObject(currStructure->prototypeForLookup(callFrame));
- currStructure = it->get();
- testPrototype(protoObject, bucketsOfFail, stubInfo);
- }
- ASSERT(protoObject);
-
- bool needsStubLink = false;
- bool isDirect = false;
- if (slot.cachedPropertyType() == PropertySlot::Getter) {
- needsStubLink = true;
- compileGetDirectOffset(protoObject, regT1, cachedOffset);
- JITStubCall stubCall(this, cti_op_get_by_id_getter_stub);
- stubCall.addArgument(regT1);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else if (slot.cachedPropertyType() == PropertySlot::Custom) {
- needsStubLink = true;
- JITStubCall stubCall(this, cti_op_get_by_id_custom_stub);
- stubCall.addArgument(TrustedImmPtr(protoObject));
- stubCall.addArgument(TrustedImmPtr(FunctionPtr(slot.customGetter()).executableAddress()));
- stubCall.addArgument(TrustedImmPtr(const_cast<Identifier*>(&ident)));
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else {
- isDirect = true;
- compileGetDirectOffset(protoObject, regT0, cachedOffset);
- }
- Jump success = jump();
-
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
+ if (!set || set->state() == IsInvalidated)
+ return;
- if (needsStubLink) {
- for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter) {
- if (iter->to)
- patchBuffer.link(iter->from, FunctionPtr(iter->to));
- }
- }
-
- // Use the patch information to link the failure cases back to the original slow case routine.
- CodeLocationLabel lastProtoBegin = CodeLocationLabel(JITStubRoutine::asCodePtr(prototypeStructures->list[currentIndex - 1].stubRoutine));
-
- patchBuffer.link(bucketsOfFail, lastProtoBegin);
-
- // On success return back to the hot patch code, at a point it will perform the store to dest for us.
- patchBuffer.link(success, stubInfo->hotPathBegin.labelAtOffset(stubInfo->patch.baseline.u.get.putResult));
-
- RefPtr<JITStubRoutine> stubRoutine = createJITStubRoutine(
- FINALIZE_CODE(
- patchBuffer,
- ("Baseline JIT get_by_id chain list stub for %s, return point %p",
- toCString(*m_codeBlock).data(), stubInfo->hotPathBegin.labelAtOffset(
- stubInfo->patch.baseline.u.get.putResult).executableAddress())),
- *m_vm,
- m_codeBlock->ownerExecutable(),
- needsStubLink);
-
- // Track the stub we have created so that it will be deleted later.
- prototypeStructures->list[currentIndex].set(callFrame->vm(), m_codeBlock->ownerExecutable(), stubRoutine, structure, chain, isDirect);
-
- // Finally patch the jump to slow case back in the hot path to jump here instead.
- CodeLocationJump jumpLocation = stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relink(jumpLocation, CodeLocationLabel(stubRoutine->code().code()));
+ load8(set->addressOfState(), scratch);
+ Jump isDone = branch32(Equal, scratch, TrustedImm32(IsInvalidated));
+ addSlowCase(branch64(NotEqual, AbsoluteAddress(set->addressOfInferredValue()), value));
+ isDone.link(this);
}
-void JIT::privateCompileGetByIdChain(StructureStubInfo* stubInfo, Structure* structure, StructureChain* chain, size_t count, const Identifier& ident, const PropertySlot& slot, PropertyOffset cachedOffset, ReturnAddressPtr returnAddress, CallFrame* callFrame)
+void JIT::emitPutGlobalVar(uintptr_t operand, int value, VariableWatchpointSet* set)
{
- ASSERT(count);
-
- JumpList bucketsOfFail;
-
- // Check eax is an object of the right Structure.
- bucketsOfFail.append(checkStructure(regT0, structure));
-
- Structure* currStructure = structure;
- WriteBarrier<Structure>* it = chain->head();
- JSObject* protoObject = 0;
- for (unsigned i = 0; i < count; ++i, ++it) {
- protoObject = asObject(currStructure->prototypeForLookup(callFrame));
- currStructure = it->get();
- testPrototype(protoObject, bucketsOfFail, stubInfo);
- }
- ASSERT(protoObject);
-
- bool needsStubLink = false;
- if (slot.cachedPropertyType() == PropertySlot::Getter) {
- needsStubLink = true;
- compileGetDirectOffset(protoObject, regT1, cachedOffset);
- JITStubCall stubCall(this, cti_op_get_by_id_getter_stub);
- stubCall.addArgument(regT1);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else if (slot.cachedPropertyType() == PropertySlot::Custom) {
- needsStubLink = true;
- JITStubCall stubCall(this, cti_op_get_by_id_custom_stub);
- stubCall.addArgument(TrustedImmPtr(protoObject));
- stubCall.addArgument(TrustedImmPtr(FunctionPtr(slot.customGetter()).executableAddress()));
- stubCall.addArgument(TrustedImmPtr(const_cast<Identifier*>(&ident)));
- stubCall.addArgument(TrustedImmPtr(stubInfo->callReturnLocation.executableAddress()));
- stubCall.call();
- } else
- compileGetDirectOffset(protoObject, regT0, cachedOffset);
- Jump success = jump();
-
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
-
- if (needsStubLink) {
- for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter) {
- if (iter->to)
- patchBuffer.link(iter->from, FunctionPtr(iter->to));
- }
- }
-
- // Use the patch information to link the failure cases back to the original slow case routine.
- patchBuffer.link(bucketsOfFail, stubInfo->callReturnLocation.labelAtOffset(-stubInfo->patch.baseline.u.get.coldPathBegin));
-
- // On success return back to the hot patch code, at a point it will perform the store to dest for us.
- patchBuffer.link(success, stubInfo->hotPathBegin.labelAtOffset(stubInfo->patch.baseline.u.get.putResult));
-
- // Track the stub we have created so that it will be deleted later.
- RefPtr<JITStubRoutine> stubRoutine = createJITStubRoutine(
- FINALIZE_CODE(
- patchBuffer,
- ("Baseline JIT get_by_id chain stub for %s, return point %p",
- toCString(*m_codeBlock).data(), stubInfo->hotPathBegin.labelAtOffset(
- stubInfo->patch.baseline.u.get.putResult).executableAddress())),
- *m_vm,
- m_codeBlock->ownerExecutable(),
- needsStubLink);
- stubInfo->stubRoutine = stubRoutine;
-
- // Finally patch the jump to slow case back in the hot path to jump here instead.
- CodeLocationJump jumpLocation = stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck);
- RepatchBuffer repatchBuffer(m_codeBlock);
- repatchBuffer.relink(jumpLocation, CodeLocationLabel(stubRoutine->code().code()));
-
- // We don't want to patch more than once - in future go to cti_op_put_by_id_generic.
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(cti_op_get_by_id_proto_list));
+ emitGetVirtualRegister(value, regT0);
+ emitNotifyWrite(regT0, regT1, set);
+ storePtr(regT0, reinterpret_cast<void*>(operand));
}
-void JIT::emit_op_get_scoped_var(Instruction* currentInstruction)
+void JIT::emitPutClosureVar(int scope, uintptr_t operand, int value)
{
- int skip = currentInstruction[3].u.operand;
-
- emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT0);
- bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
- ASSERT(skip || !checkTopLevel);
- if (checkTopLevel && skip--) {
- Jump activationNotCreated;
- if (checkTopLevel)
- activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
- loadPtr(Address(regT0, JSScope::offsetOfNext()), regT0);
- activationNotCreated.link(this);
- }
- while (skip--)
- loadPtr(Address(regT0, JSScope::offsetOfNext()), regT0);
-
+ emitGetVirtualRegister(value, regT1);
+ emitGetVirtualRegister(scope, regT0);
loadPtr(Address(regT0, JSVariableObject::offsetOfRegisters()), regT0);
- loadPtr(Address(regT0, currentInstruction[2].u.operand * sizeof(Register)), regT0);
- emitValueProfilingSite();
- emitPutVirtualRegister(currentInstruction[1].u.operand);
+ storePtr(regT1, Address(regT0, operand * sizeof(Register)));
}
-void JIT::emit_op_put_scoped_var(Instruction* currentInstruction)
+void JIT::emit_op_put_to_scope(Instruction* currentInstruction)
{
- int skip = currentInstruction[2].u.operand;
-
- emitGetVirtualRegister(currentInstruction[3].u.operand, regT0);
-
- emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1);
- bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
- ASSERT(skip || !checkTopLevel);
- if (checkTopLevel && skip--) {
- Jump activationNotCreated;
- if (checkTopLevel)
- activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
- loadPtr(Address(regT1, JSScope::offsetOfNext()), regT1);
- activationNotCreated.link(this);
+ int scope = currentInstruction[1].u.operand;
+ int value = currentInstruction[3].u.operand;
+ ResolveType resolveType = ResolveModeAndType(currentInstruction[4].u.operand).type();
+ Structure** structureSlot = currentInstruction[5].u.structure.slot();
+ uintptr_t* operandSlot = reinterpret_cast<uintptr_t*>(¤tInstruction[6].u.pointer);
+
+ switch (resolveType) {
+ case GlobalProperty:
+ case GlobalPropertyWithVarInjectionChecks:
+ emitWriteBarrier(m_codeBlock->globalObject(), value, ShouldFilterValue);
+ emitLoadWithStructureCheck(scope, structureSlot); // Structure check covers var injection.
+ emitPutGlobalProperty(operandSlot, value);
+ break;
+ case GlobalVar:
+ case GlobalVarWithVarInjectionChecks:
+ emitWriteBarrier(m_codeBlock->globalObject(), value, ShouldFilterValue);
+ emitVarInjectionCheck(needsVarInjectionChecks(resolveType));
+ emitPutGlobalVar(*operandSlot, value, currentInstruction[5].u.watchpointSet);
+ break;
+ case ClosureVar:
+ case ClosureVarWithVarInjectionChecks:
+ emitWriteBarrier(scope, value, ShouldFilterValue);
+ emitVarInjectionCheck(needsVarInjectionChecks(resolveType));
+ emitPutClosureVar(scope, *operandSlot, value);
+ break;
+ case Dynamic:
+ addSlowCase(jump());
+ break;
}
- while (skip--)
- loadPtr(Address(regT1, JSScope::offsetOfNext()), regT1);
-
- emitWriteBarrier(regT1, regT0, regT2, regT3, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+}
- loadPtr(Address(regT1, JSVariableObject::offsetOfRegisters()), regT1);
- storePtr(regT0, Address(regT1, currentInstruction[1].u.operand * sizeof(Register)));
+void JIT::emitSlow_op_put_to_scope(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ ResolveType resolveType = ResolveModeAndType(currentInstruction[4].u.operand).type();
+ unsigned linkCount = 0;
+ if (resolveType != GlobalVar && resolveType != ClosureVar)
+ linkCount++;
+ if ((resolveType == GlobalVar || resolveType == GlobalVarWithVarInjectionChecks)
+ && currentInstruction[5].u.watchpointSet->state() != IsInvalidated)
+ linkCount++;
+ if (resolveType == GlobalProperty || resolveType == GlobalPropertyWithVarInjectionChecks)
+ linkCount++;
+ if (!linkCount)
+ return;
+ while (linkCount--)
+ linkSlowCase(iter);
+ callOperation(operationPutToScope, currentInstruction);
}
void JIT::emit_op_init_global_const(Instruction* currentInstruction)
{
JSGlobalObject* globalObject = m_codeBlock->globalObject();
-
+ emitWriteBarrier(globalObject, currentInstruction[2].u.operand, ShouldFilterValue);
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
-
store64(regT0, currentInstruction[1].u.registerPointer);
- if (Heap::isWriteBarrierEnabled())
- emitWriteBarrier(globalObject, regT0, regT2, ShouldFilterImmediates, WriteBarrierForVariableAccess);
}
-void JIT::emit_op_init_global_const_check(Instruction* currentInstruction)
-{
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
-
- addSlowCase(branchTest8(NonZero, AbsoluteAddress(currentInstruction[3].u.predicatePointer)));
-
- JSGlobalObject* globalObject = m_codeBlock->globalObject();
-
- store64(regT0, currentInstruction[1].u.registerPointer);
- if (Heap::isWriteBarrierEnabled())
- emitWriteBarrier(globalObject, regT0, regT2, ShouldFilterImmediates, WriteBarrierForVariableAccess);
-}
+#endif // USE(JSVALUE64)
-void JIT::emitSlow_op_init_global_const_check(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+#if USE(JSVALUE64)
+void JIT::emitWriteBarrier(unsigned owner, unsigned value, WriteBarrierMode mode)
{
- linkSlowCase(iter);
+#if ENABLE(GGC)
+ Jump valueNotCell;
+ if (mode == ShouldFilterValue || mode == ShouldFilterBaseAndValue) {
+ emitGetVirtualRegister(value, regT0);
+ valueNotCell = branchTest64(NonZero, regT0, tagMaskRegister);
+ }
+
+ emitGetVirtualRegister(owner, regT0);
+ Jump ownerNotCell;
+ if (mode == ShouldFilterBaseAndValue || mode == ShouldFilterBase)
+ ownerNotCell = branchTest64(NonZero, regT0, tagMaskRegister);
- JITStubCall stubCall(this, cti_op_init_global_const_check);
- stubCall.addArgument(regT0);
- stubCall.addArgument(TrustedImm32(currentInstruction[4].u.operand));
- stubCall.call();
-}
+ Jump ownerNotMarkedOrAlreadyRemembered = checkMarkByte(regT0);
+ callOperation(operationUnconditionalWriteBarrier, regT0);
+ ownerNotMarkedOrAlreadyRemembered.link(this);
-void JIT::resetPatchGetById(RepatchBuffer& repatchBuffer, StructureStubInfo* stubInfo)
-{
- repatchBuffer.relink(stubInfo->callReturnLocation, cti_op_get_by_id);
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabelPtrAtOffset(stubInfo->patch.baseline.u.get.structureToCompare), reinterpret_cast<void*>(unusedPointer));
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabelCompactAtOffset(stubInfo->patch.baseline.u.get.displacementLabel), 0);
- repatchBuffer.relink(stubInfo->hotPathBegin.jumpAtOffset(stubInfo->patch.baseline.u.get.structureCheck), stubInfo->callReturnLocation.labelAtOffset(-stubInfo->patch.baseline.u.get.coldPathBegin));
+ if (mode == ShouldFilterBaseAndValue || mode == ShouldFilterBase)
+ ownerNotCell.link(this);
+ if (mode == ShouldFilterValue || mode == ShouldFilterBaseAndValue)
+ valueNotCell.link(this);
+#else
+ UNUSED_PARAM(owner);
+ UNUSED_PARAM(value);
+ UNUSED_PARAM(mode);
+#endif
}
-void JIT::resetPatchPutById(RepatchBuffer& repatchBuffer, StructureStubInfo* stubInfo)
+void JIT::emitWriteBarrier(JSCell* owner, unsigned value, WriteBarrierMode mode)
{
- if (isDirectPutById(stubInfo))
- repatchBuffer.relink(stubInfo->callReturnLocation, cti_op_put_by_id_direct);
- else
- repatchBuffer.relink(stubInfo->callReturnLocation, cti_op_put_by_id);
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabelPtrAtOffset(stubInfo->patch.baseline.u.put.structureToCompare), reinterpret_cast<void*>(unusedPointer));
- repatchBuffer.repatch(stubInfo->hotPathBegin.dataLabel32AtOffset(stubInfo->patch.baseline.u.put.displacementLabel), 0);
-}
+#if ENABLE(GGC)
+ emitGetVirtualRegister(value, regT0);
+ Jump valueNotCell;
+ if (mode == ShouldFilterValue)
+ valueNotCell = branchTest64(NonZero, regT0, tagMaskRegister);
-#endif // USE(JSVALUE64)
+ emitWriteBarrier(owner);
-void JIT::emitWriteBarrier(RegisterID owner, RegisterID value, RegisterID scratch, RegisterID scratch2, WriteBarrierMode mode, WriteBarrierUseKind useKind)
-{
+ if (mode == ShouldFilterValue)
+ valueNotCell.link(this);
+#else
UNUSED_PARAM(owner);
- UNUSED_PARAM(scratch);
- UNUSED_PARAM(scratch2);
- UNUSED_PARAM(useKind);
UNUSED_PARAM(value);
UNUSED_PARAM(mode);
- ASSERT(owner != scratch);
- ASSERT(owner != scratch2);
-
-#if ENABLE(WRITE_BARRIER_PROFILING)
- emitCount(WriteBarrierCounters::jitCounterFor(useKind));
#endif
}
-void JIT::emitWriteBarrier(JSCell* owner, RegisterID value, RegisterID scratch, WriteBarrierMode mode, WriteBarrierUseKind useKind)
+#else // USE(JSVALUE64)
+
+void JIT::emitWriteBarrier(unsigned owner, unsigned value, WriteBarrierMode mode)
{
+#if ENABLE(GGC)
+ Jump valueNotCell;
+ if (mode == ShouldFilterValue || mode == ShouldFilterBaseAndValue) {
+ emitLoadTag(value, regT0);
+ valueNotCell = branch32(NotEqual, regT0, TrustedImm32(JSValue::CellTag));
+ }
+
+ emitLoad(owner, regT0, regT1);
+ Jump ownerNotCell;
+ if (mode == ShouldFilterBase || mode == ShouldFilterBaseAndValue)
+ ownerNotCell = branch32(NotEqual, regT0, TrustedImm32(JSValue::CellTag));
+
+ Jump ownerNotMarkedOrAlreadyRemembered = checkMarkByte(regT1);
+ callOperation(operationUnconditionalWriteBarrier, regT1);
+ ownerNotMarkedOrAlreadyRemembered.link(this);
+
+ if (mode == ShouldFilterBase || mode == ShouldFilterBaseAndValue)
+ ownerNotCell.link(this);
+ if (mode == ShouldFilterValue || mode == ShouldFilterBaseAndValue)
+ valueNotCell.link(this);
+#else
UNUSED_PARAM(owner);
- UNUSED_PARAM(scratch);
- UNUSED_PARAM(useKind);
UNUSED_PARAM(value);
UNUSED_PARAM(mode);
-
-#if ENABLE(WRITE_BARRIER_PROFILING)
- emitCount(WriteBarrierCounters::jitCounterFor(useKind));
#endif
}
-JIT::Jump JIT::addStructureTransitionCheck(JSCell* object, Structure* structure, StructureStubInfo* stubInfo, RegisterID scratch)
+void JIT::emitWriteBarrier(JSCell* owner, unsigned value, WriteBarrierMode mode)
{
- if (object->structure() == structure && structure->transitionWatchpointSetIsStillValid()) {
- structure->addTransitionWatchpoint(stubInfo->addWatchpoint(m_codeBlock));
-#if !ASSERT_DISABLED
- move(TrustedImmPtr(object), scratch);
- Jump ok = branchPtr(Equal, Address(scratch, JSCell::structureOffset()), TrustedImmPtr(structure));
- breakpoint();
- ok.link(this);
-#endif
- Jump result; // Returning an unset jump this way because otherwise VC++ would complain.
- return result;
+#if ENABLE(GGC)
+ Jump valueNotCell;
+ if (mode == ShouldFilterValue) {
+ emitLoadTag(value, regT0);
+ valueNotCell = branch32(NotEqual, regT0, TrustedImm32(JSValue::CellTag));
}
-
- move(TrustedImmPtr(object), scratch);
- return branchPtr(NotEqual, Address(scratch, JSCell::structureOffset()), TrustedImmPtr(structure));
-}
-
-void JIT::addStructureTransitionCheck(JSCell* object, Structure* structure, StructureStubInfo* stubInfo, JumpList& failureCases, RegisterID scratch)
-{
- Jump failureCase = addStructureTransitionCheck(object, structure, stubInfo, scratch);
- if (!failureCase.isSet())
- return;
-
- failureCases.append(failureCase);
-}
-void JIT::testPrototype(JSValue prototype, JumpList& failureCases, StructureStubInfo* stubInfo)
-{
- if (prototype.isNull())
- return;
+ emitWriteBarrier(owner);
- ASSERT(prototype.isCell());
- addStructureTransitionCheck(prototype.asCell(), prototype.asCell()->structure(), stubInfo, failureCases, regT3);
+ if (mode == ShouldFilterValue)
+ valueNotCell.link(this);
+#else
+ UNUSED_PARAM(owner);
+ UNUSED_PARAM(value);
+ UNUSED_PARAM(mode);
+#endif
}
-bool JIT::isDirectPutById(StructureStubInfo* stubInfo)
+#endif // USE(JSVALUE64)
+
+void JIT::emitWriteBarrier(JSCell* owner)
{
- switch (stubInfo->accessType) {
- case access_put_by_id_transition_normal:
- return false;
- case access_put_by_id_transition_direct:
- return true;
- case access_put_by_id_replace:
- case access_put_by_id_generic: {
- void* oldCall = MacroAssembler::readCallTarget(stubInfo->callReturnLocation).executableAddress();
- if (oldCall == bitwise_cast<void*>(cti_op_put_by_id_direct)
- || oldCall == bitwise_cast<void*>(cti_op_put_by_id_direct_generic)
- || oldCall == bitwise_cast<void*>(cti_op_put_by_id_direct_fail))
- return true;
- ASSERT(oldCall == bitwise_cast<void*>(cti_op_put_by_id)
- || oldCall == bitwise_cast<void*>(cti_op_put_by_id_generic)
- || oldCall == bitwise_cast<void*>(cti_op_put_by_id_fail));
- return false;
- }
- default:
- RELEASE_ASSERT_NOT_REACHED();
- return false;
- }
+#if ENABLE(GGC)
+ if (!MarkedBlock::blockFor(owner)->isMarked(owner)) {
+ Jump ownerNotMarkedOrAlreadyRemembered = checkMarkByte(owner);
+ callOperation(operationUnconditionalWriteBarrier, owner);
+ ownerNotMarkedOrAlreadyRemembered.link(this);
+ } else
+ callOperation(operationUnconditionalWriteBarrier, owner);
+#else
+ UNUSED_PARAM(owner);
+#endif // ENABLE(GGC)
}
void JIT::privateCompileGetByVal(ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)
case JITArrayStorage:
slowCases = emitArrayStorageGetByVal(currentInstruction, badType);
break;
- case JITInt8Array:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->int8ArrayDescriptor(), 1, SignedTypedArray);
- break;
- case JITInt16Array:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->int16ArrayDescriptor(), 2, SignedTypedArray);
- break;
- case JITInt32Array:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->int32ArrayDescriptor(), 4, SignedTypedArray);
- break;
- case JITUint8Array:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->uint8ArrayDescriptor(), 1, UnsignedTypedArray);
- break;
- case JITUint8ClampedArray:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->uint8ClampedArrayDescriptor(), 1, UnsignedTypedArray);
- break;
- case JITUint16Array:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->uint16ArrayDescriptor(), 2, UnsignedTypedArray);
- break;
- case JITUint32Array:
- slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, m_vm->uint32ArrayDescriptor(), 4, UnsignedTypedArray);
- break;
- case JITFloat32Array:
- slowCases = emitFloatTypedArrayGetByVal(currentInstruction, badType, m_vm->float32ArrayDescriptor(), 4);
- break;
- case JITFloat64Array:
- slowCases = emitFloatTypedArrayGetByVal(currentInstruction, badType, m_vm->float64ArrayDescriptor(), 8);
- break;
default:
- CRASH();
+ TypedArrayType type = typedArrayTypeForJITArrayMode(arrayMode);
+ if (isInt(type))
+ slowCases = emitIntTypedArrayGetByVal(currentInstruction, badType, type);
+ else
+ slowCases = emitFloatTypedArrayGetByVal(currentInstruction, badType, type);
+ break;
}
Jump done = jump();
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
+ LinkBuffer patchBuffer(*m_vm, *this, m_codeBlock);
patchBuffer.link(badType, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
patchBuffer.link(slowCases, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
patchBuffer.link(done, byValInfo->badTypeJump.labelAtOffset(byValInfo->badTypeJumpToDone));
byValInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
- patchBuffer,
+ m_codeBlock, patchBuffer,
("Baseline get_by_val stub for %s, return point %p", toCString(*m_codeBlock).data(), returnAddress.value()));
RepatchBuffer repatchBuffer(m_codeBlock);
repatchBuffer.relink(byValInfo->badTypeJump, CodeLocationLabel(byValInfo->stubRoutine->code().code()));
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(cti_op_get_by_val_generic));
+ repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(operationGetByValGeneric));
}
void JIT::privateCompilePutByVal(ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)
PatchableJump badType;
JumpList slowCases;
-
+
+#if ENABLE(GGC)
+ bool needsLinkForWriteBarrier = false;
+#endif
+
switch (arrayMode) {
case JITInt32:
slowCases = emitInt32PutByVal(currentInstruction, badType);
break;
case JITContiguous:
slowCases = emitContiguousPutByVal(currentInstruction, badType);
+#if ENABLE(GGC)
+ needsLinkForWriteBarrier = true;
+#endif
break;
case JITArrayStorage:
slowCases = emitArrayStoragePutByVal(currentInstruction, badType);
- break;
- case JITInt8Array:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->int8ArrayDescriptor(), 1, SignedTypedArray, TruncateRounding);
- break;
- case JITInt16Array:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->int16ArrayDescriptor(), 2, SignedTypedArray, TruncateRounding);
- break;
- case JITInt32Array:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->int32ArrayDescriptor(), 4, SignedTypedArray, TruncateRounding);
- break;
- case JITUint8Array:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->uint8ArrayDescriptor(), 1, UnsignedTypedArray, TruncateRounding);
- break;
- case JITUint8ClampedArray:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->uint8ClampedArrayDescriptor(), 1, UnsignedTypedArray, ClampRounding);
- break;
- case JITUint16Array:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->uint16ArrayDescriptor(), 2, UnsignedTypedArray, TruncateRounding);
- break;
- case JITUint32Array:
- slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, m_vm->uint32ArrayDescriptor(), 4, UnsignedTypedArray, TruncateRounding);
- break;
- case JITFloat32Array:
- slowCases = emitFloatTypedArrayPutByVal(currentInstruction, badType, m_vm->float32ArrayDescriptor(), 4);
- break;
- case JITFloat64Array:
- slowCases = emitFloatTypedArrayPutByVal(currentInstruction, badType, m_vm->float64ArrayDescriptor(), 8);
+#if ENABLE(GGC)
+ needsLinkForWriteBarrier = true;
+#endif
break;
default:
- CRASH();
+ TypedArrayType type = typedArrayTypeForJITArrayMode(arrayMode);
+ if (isInt(type))
+ slowCases = emitIntTypedArrayPutByVal(currentInstruction, badType, type);
+ else
+ slowCases = emitFloatTypedArrayPutByVal(currentInstruction, badType, type);
break;
}
Jump done = jump();
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
-
+ LinkBuffer patchBuffer(*m_vm, *this, m_codeBlock);
patchBuffer.link(badType, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
patchBuffer.link(slowCases, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
-
patchBuffer.link(done, byValInfo->badTypeJump.labelAtOffset(byValInfo->badTypeJumpToDone));
+#if ENABLE(GGC)
+ if (needsLinkForWriteBarrier) {
+ ASSERT(m_calls.last().to == operationUnconditionalWriteBarrier);
+ patchBuffer.link(m_calls.last().from, operationUnconditionalWriteBarrier);
+ }
+#endif
- byValInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
- patchBuffer,
- ("Baseline put_by_val stub for %s, return point %p", toCString(*m_codeBlock).data(), returnAddress.value()));
-
+ bool isDirect = m_interpreter->getOpcodeID(currentInstruction->u.opcode) == op_put_by_val_direct;
+ if (!isDirect) {
+ byValInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
+ m_codeBlock, patchBuffer,
+ ("Baseline put_by_val stub for %s, return point %p", toCString(*m_codeBlock).data(), returnAddress.value()));
+
+ } else {
+ byValInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
+ m_codeBlock, patchBuffer,
+ ("Baseline put_by_val_direct stub for %s, return point %p", toCString(*m_codeBlock).data(), returnAddress.value()));
+ }
RepatchBuffer repatchBuffer(m_codeBlock);
repatchBuffer.relink(byValInfo->badTypeJump, CodeLocationLabel(byValInfo->stubRoutine->code().code()));
- repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(cti_op_put_by_val_generic));
+ repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(isDirect ? operationDirectPutByValGeneric : operationPutByValGeneric));
}
-JIT::JumpList JIT::emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, const TypedArrayDescriptor& descriptor, size_t elementSize, TypedArraySignedness signedness)
+JIT::JumpList JIT::emitIntTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType type)
{
+ ASSERT(isInt(type));
+
// The best way to test the array type is to use the classInfo. We need to do so without
// clobbering the register that holds the indexing type, base, and property.
JumpList slowCases;
- loadPtr(Address(base, JSCell::structureOffset()), scratch);
- badType = patchableBranchPtr(NotEqual, Address(scratch, Structure::classInfoOffset()), TrustedImmPtr(descriptor.m_classInfo));
- slowCases.append(branch32(AboveOrEqual, property, Address(base, descriptor.m_lengthOffset)));
- loadPtr(Address(base, descriptor.m_storageOffset), base);
+ load8(Address(base, JSCell::typeInfoTypeOffset()), scratch);
+ badType = patchableBranch32(NotEqual, scratch, TrustedImm32(typeForTypedArrayType(type)));
+ slowCases.append(branch32(AboveOrEqual, property, Address(base, JSArrayBufferView::offsetOfLength())));
+ loadPtr(Address(base, JSArrayBufferView::offsetOfVector()), base);
- switch (elementSize) {
+ switch (elementSize(type)) {
case 1:
- if (signedness == SignedTypedArray)
+ if (isSigned(type))
load8Signed(BaseIndex(base, property, TimesOne), resultPayload);
else
load8(BaseIndex(base, property, TimesOne), resultPayload);
break;
case 2:
- if (signedness == SignedTypedArray)
+ if (isSigned(type))
load16Signed(BaseIndex(base, property, TimesTwo), resultPayload);
else
load16(BaseIndex(base, property, TimesTwo), resultPayload);
}
Jump done;
- if (elementSize == 4 && signedness == UnsignedTypedArray) {
+ if (type == TypeUint32) {
Jump canBeInt = branch32(GreaterThanOrEqual, resultPayload, TrustedImm32(0));
convertInt32ToDouble(resultPayload, fpRegT0);
return slowCases;
}
-JIT::JumpList JIT::emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, const TypedArrayDescriptor& descriptor, size_t elementSize)
+JIT::JumpList JIT::emitFloatTypedArrayGetByVal(Instruction*, PatchableJump& badType, TypedArrayType type)
{
+ ASSERT(isFloat(type));
+
#if USE(JSVALUE64)
RegisterID base = regT0;
RegisterID property = regT1;
#endif
JumpList slowCases;
+
+ load8(Address(base, JSCell::typeInfoTypeOffset()), scratch);
+ badType = patchableBranch32(NotEqual, scratch, TrustedImm32(typeForTypedArrayType(type)));
+ slowCases.append(branch32(AboveOrEqual, property, Address(base, JSArrayBufferView::offsetOfLength())));
+ loadPtr(Address(base, JSArrayBufferView::offsetOfVector()), base);
- loadPtr(Address(base, JSCell::structureOffset()), scratch);
- badType = patchableBranchPtr(NotEqual, Address(scratch, Structure::classInfoOffset()), TrustedImmPtr(descriptor.m_classInfo));
- slowCases.append(branch32(AboveOrEqual, property, Address(base, descriptor.m_lengthOffset)));
- loadPtr(Address(base, descriptor.m_storageOffset), base);
-
- switch (elementSize) {
+ switch (elementSize(type)) {
case 4:
loadFloat(BaseIndex(base, property, TimesFour), fpRegT0);
convertFloatToDouble(fpRegT0, fpRegT0);
}
Jump notNaN = branchDouble(DoubleEqual, fpRegT0, fpRegT0);
- static const double NaN = QNaN;
- loadDouble(&NaN, fpRegT0);
+ static const double NaN = PNaN;
+ loadDouble(TrustedImmPtr(&NaN), fpRegT0);
notNaN.link(this);
#if USE(JSVALUE64)
return slowCases;
}
-JIT::JumpList JIT::emitIntTypedArrayPutByVal(Instruction* currentInstruction, PatchableJump& badType, const TypedArrayDescriptor& descriptor, size_t elementSize, TypedArraySignedness signedness, TypedArrayRounding rounding)
+JIT::JumpList JIT::emitIntTypedArrayPutByVal(Instruction* currentInstruction, PatchableJump& badType, TypedArrayType type)
{
- unsigned value = currentInstruction[3].u.operand;
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
+ ASSERT(isInt(type));
+
+ int value = currentInstruction[3].u.operand;
#if USE(JSVALUE64)
RegisterID base = regT0;
JumpList slowCases;
- loadPtr(Address(base, JSCell::structureOffset()), earlyScratch);
- badType = patchableBranchPtr(NotEqual, Address(earlyScratch, Structure::classInfoOffset()), TrustedImmPtr(descriptor.m_classInfo));
- slowCases.append(branch32(AboveOrEqual, property, Address(base, descriptor.m_lengthOffset)));
+ load8(Address(base, JSCell::typeInfoTypeOffset()), earlyScratch);
+ badType = patchableBranch32(NotEqual, earlyScratch, TrustedImm32(typeForTypedArrayType(type)));
+ Jump inBounds = branch32(Below, property, Address(base, JSArrayBufferView::offsetOfLength()));
+ emitArrayProfileOutOfBoundsSpecialCase(profile);
+ Jump done = jump();
+ inBounds.link(this);
#if USE(JSVALUE64)
emitGetVirtualRegister(value, earlyScratch);
// We would be loading this into base as in get_by_val, except that the slow
// path expects the base to be unclobbered.
- loadPtr(Address(base, descriptor.m_storageOffset), lateScratch);
+ loadPtr(Address(base, JSArrayBufferView::offsetOfVector()), lateScratch);
- if (rounding == ClampRounding) {
- ASSERT(elementSize == 1);
- ASSERT_UNUSED(signedness, signedness = UnsignedTypedArray);
+ if (isClamped(type)) {
+ ASSERT(elementSize(type) == 1);
+ ASSERT(!isSigned(type));
Jump inBounds = branch32(BelowOrEqual, earlyScratch, TrustedImm32(0xff));
Jump tooBig = branch32(GreaterThan, earlyScratch, TrustedImm32(0xff));
xor32(earlyScratch, earlyScratch);
inBounds.link(this);
}
- switch (elementSize) {
+ switch (elementSize(type)) {
case 1:
store8(earlyScratch, BaseIndex(lateScratch, property, TimesOne));
break;
CRASH();
}
+ done.link(this);
+
return slowCases;
}
-JIT::JumpList JIT::emitFloatTypedArrayPutByVal(Instruction* currentInstruction, PatchableJump& badType, const TypedArrayDescriptor& descriptor, size_t elementSize)
+JIT::JumpList JIT::emitFloatTypedArrayPutByVal(Instruction* currentInstruction, PatchableJump& badType, TypedArrayType type)
{
- unsigned value = currentInstruction[3].u.operand;
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
+ ASSERT(isFloat(type));
+
+ int value = currentInstruction[3].u.operand;
#if USE(JSVALUE64)
RegisterID base = regT0;
JumpList slowCases;
- loadPtr(Address(base, JSCell::structureOffset()), earlyScratch);
- badType = patchableBranchPtr(NotEqual, Address(earlyScratch, Structure::classInfoOffset()), TrustedImmPtr(descriptor.m_classInfo));
- slowCases.append(branch32(AboveOrEqual, property, Address(base, descriptor.m_lengthOffset)));
+ load8(Address(base, JSCell::typeInfoTypeOffset()), earlyScratch);
+ badType = patchableBranch32(NotEqual, earlyScratch, TrustedImm32(typeForTypedArrayType(type)));
+ Jump inBounds = branch32(Below, property, Address(base, JSArrayBufferView::offsetOfLength()));
+ emitArrayProfileOutOfBoundsSpecialCase(profile);
+ Jump done = jump();
+ inBounds.link(this);
#if USE(JSVALUE64)
emitGetVirtualRegister(value, earlyScratch);
// We would be loading this into base as in get_by_val, except that the slow
// path expects the base to be unclobbered.
- loadPtr(Address(base, descriptor.m_storageOffset), lateScratch);
+ loadPtr(Address(base, JSArrayBufferView::offsetOfVector()), lateScratch);
- switch (elementSize) {
+ switch (elementSize(type)) {
case 4:
convertDoubleToFloat(fpRegT0, fpRegT0);
storeFloat(fpRegT0, BaseIndex(lateScratch, property, TimesFour));
CRASH();
}
+ done.link(this);
+
return slowCases;
}
projects / apple / javascriptcore.git / blobdiff