DFGOSRExitCompiler32_64.cpp [plain text]
#include "config.h"
#include "DFGOSRExitCompiler.h"
#if ENABLE(DFG_JIT) && USE(JSVALUE32_64)
#include "DFGOperations.h"
namespace JSC { namespace DFG {
void OSRExitCompiler::compileExit(const OSRExit& exit, SpeculationRecovery* recovery)
{
#if DFG_ENABLE(DEBUG_VERBOSE)
fprintf(stderr, "OSR exit for Node @%d (", (int)exit.m_nodeIndex);
for (CodeOrigin codeOrigin = exit.m_codeOrigin; ; codeOrigin = codeOrigin.inlineCallFrame->caller) {
fprintf(stderr, "bc#%u", codeOrigin.bytecodeIndex);
if (!codeOrigin.inlineCallFrame)
break;
fprintf(stderr, " -> %p ", codeOrigin.inlineCallFrame->executable.get());
}
fprintf(stderr, ") at JIT offset 0x%x ", m_jit.debugOffset());
exit.dump(stderr);
#endif
#if DFG_ENABLE(VERBOSE_SPECULATION_FAILURE)
SpeculationFailureDebugInfo* debugInfo = new SpeculationFailureDebugInfo;
debugInfo->codeBlock = m_jit.codeBlock();
debugInfo->nodeIndex = exit.m_nodeIndex;
m_jit.debugCall(debugOperationPrintSpeculationFailure, debugInfo);
#endif
#if DFG_ENABLE(JIT_BREAK_ON_SPECULATION_FAILURE)
m_jit.breakpoint();
#endif
#if DFG_ENABLE(SUCCESS_STATS)
static SamplingCounter counter("SpeculationFailure");
m_jit.emitCount(counter);
#endif
if (recovery) {
switch (recovery->type()) {
case SpeculativeAdd:
m_jit.sub32(recovery->src(), recovery->dest());
break;
case BooleanSpeculationCheck:
break;
default:
break;
}
}
if (!!exit.m_jsValueSource && !!exit.m_valueProfile) {
if (exit.m_jsValueSource.isAddress()) {
GPRReg scratch = GPRInfo::regT0;
if (scratch == exit.m_jsValueSource.base())
scratch = GPRInfo::regT1;
EncodedJSValue* scratchBuffer = static_cast<EncodedJSValue*>(m_jit.globalData()->scratchBufferForSize(sizeof(uint32_t)));
m_jit.store32(scratch, scratchBuffer);
m_jit.load32(exit.m_jsValueSource.asAddress(OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag)), scratch);
m_jit.store32(scratch, &bitwise_cast<EncodedValueDescriptor*>(exit.m_valueProfile->specFailBucket(0))->asBits.tag);
m_jit.load32(exit.m_jsValueSource.asAddress(OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)), scratch);
m_jit.store32(scratch, &bitwise_cast<EncodedValueDescriptor*>(exit.m_valueProfile->specFailBucket(0))->asBits.payload);
m_jit.load32(scratchBuffer, scratch);
} else if (exit.m_jsValueSource.hasKnownTag()) {
m_jit.store32(AssemblyHelpers::Imm32(exit.m_jsValueSource.tag()), &bitwise_cast<EncodedValueDescriptor*>(exit.m_valueProfile->specFailBucket(0))->asBits.tag);
m_jit.store32(exit.m_jsValueSource.payloadGPR(), &bitwise_cast<EncodedValueDescriptor*>(exit.m_valueProfile->specFailBucket(0))->asBits.payload);
} else {
m_jit.store32(exit.m_jsValueSource.tagGPR(), &bitwise_cast<EncodedValueDescriptor*>(exit.m_valueProfile->specFailBucket(0))->asBits.tag);
m_jit.store32(exit.m_jsValueSource.payloadGPR(), &bitwise_cast<EncodedValueDescriptor*>(exit.m_valueProfile->specFailBucket(0))->asBits.payload);
}
}
Vector<bool> poisonedVirtualRegisters(exit.m_variables.size());
for (unsigned i = 0; i < poisonedVirtualRegisters.size(); ++i)
poisonedVirtualRegisters[i] = false;
unsigned numberOfPoisonedVirtualRegisters = 0;
unsigned numberOfDisplacedVirtualRegisters = 0;
bool haveUnboxedInt32InRegisterFile = false;
bool haveUnboxedCellInRegisterFile = false;
bool haveUnboxedBooleanInRegisterFile = false;
bool haveUInt32s = false;
bool haveFPRs = false;
bool haveConstants = false;
bool haveUndefined = false;
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
switch (recovery.technique()) {
case DisplacedInRegisterFile:
numberOfDisplacedVirtualRegisters++;
ASSERT((int)recovery.virtualRegister() >= 0);
if (recovery.virtualRegister() < (int)exit.m_variables.size()) {
switch (exit.m_variables[recovery.virtualRegister()].technique()) {
case InGPR:
case UnboxedInt32InGPR:
case UnboxedBooleanInGPR:
case UInt32InGPR:
case InPair:
case InFPR:
if (!poisonedVirtualRegisters[recovery.virtualRegister()]) {
poisonedVirtualRegisters[recovery.virtualRegister()] = true;
numberOfPoisonedVirtualRegisters++;
}
break;
default:
break;
}
}
break;
case UInt32InGPR:
haveUInt32s = true;
break;
case AlreadyInRegisterFileAsUnboxedInt32:
haveUnboxedInt32InRegisterFile = true;
break;
case AlreadyInRegisterFileAsUnboxedCell:
haveUnboxedCellInRegisterFile = true;
break;
case AlreadyInRegisterFileAsUnboxedBoolean:
haveUnboxedBooleanInRegisterFile = true;
break;
case InFPR:
haveFPRs = true;
break;
case Constant:
haveConstants = true;
if (recovery.constant().isUndefined())
haveUndefined = true;
break;
default:
break;
}
}
unsigned scratchBufferLengthBeforeUInt32s = numberOfPoisonedVirtualRegisters + ((numberOfDisplacedVirtualRegisters * 2) <= GPRInfo::numberOfRegisters ? 0 : numberOfDisplacedVirtualRegisters);
EncodedJSValue* scratchBuffer = static_cast<EncodedJSValue*>(m_jit.globalData()->scratchBufferForSize(sizeof(EncodedJSValue) * (scratchBufferLengthBeforeUInt32s + (haveUInt32s ? 2 : 0))));
if (haveUnboxedInt32InRegisterFile || haveUnboxedCellInRegisterFile || haveUnboxedBooleanInRegisterFile) {
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
switch (recovery.technique()) {
case AlreadyInRegisterFileAsUnboxedInt32:
m_jit.store32(AssemblyHelpers::TrustedImm32(JSValue::Int32Tag), AssemblyHelpers::tagFor(static_cast<VirtualRegister>(exit.operandForIndex(index))));
break;
case AlreadyInRegisterFileAsUnboxedCell:
m_jit.store32(AssemblyHelpers::TrustedImm32(JSValue::CellTag), AssemblyHelpers::tagFor(static_cast<VirtualRegister>(exit.operandForIndex(index))));
break;
case AlreadyInRegisterFileAsUnboxedBoolean:
m_jit.store32(AssemblyHelpers::TrustedImm32(JSValue::BooleanTag), AssemblyHelpers::tagFor(static_cast<VirtualRegister>(exit.operandForIndex(index))));
break;
default:
break;
}
}
}
initializePoisoned(exit.m_variables.size());
unsigned currentPoisonIndex = 0;
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
int operand = exit.operandForIndex(index);
switch (recovery.technique()) {
case InGPR:
case UnboxedInt32InGPR:
case UnboxedBooleanInGPR:
if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
m_jit.store32(recovery.gpr(), reinterpret_cast<char*>(scratchBuffer + currentPoisonIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload));
m_poisonScratchIndices[exit.variableForIndex(index)] = currentPoisonIndex;
currentPoisonIndex++;
} else {
uint32_t tag = JSValue::EmptyValueTag;
if (recovery.technique() == InGPR)
tag = JSValue::CellTag;
else if (recovery.technique() == UnboxedInt32InGPR)
tag = JSValue::Int32Tag;
else
tag = JSValue::BooleanTag;
m_jit.store32(AssemblyHelpers::TrustedImm32(tag), AssemblyHelpers::tagFor((VirtualRegister)operand));
m_jit.store32(recovery.gpr(), AssemblyHelpers::payloadFor((VirtualRegister)operand));
}
break;
case InPair:
if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
m_jit.store32(recovery.tagGPR(), reinterpret_cast<char*>(scratchBuffer + currentPoisonIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag));
m_jit.store32(recovery.payloadGPR(), reinterpret_cast<char*>(scratchBuffer + currentPoisonIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload));
m_poisonScratchIndices[exit.variableForIndex(index)] = currentPoisonIndex;
currentPoisonIndex++;
} else {
m_jit.store32(recovery.tagGPR(), AssemblyHelpers::tagFor((VirtualRegister)operand));
m_jit.store32(recovery.payloadGPR(), AssemblyHelpers::payloadFor((VirtualRegister)operand));
}
break;
case UInt32InGPR: {
EncodedJSValue* myScratch = scratchBuffer + scratchBufferLengthBeforeUInt32s;
GPRReg addressGPR = GPRInfo::regT0;
if (addressGPR == recovery.gpr())
addressGPR = GPRInfo::regT1;
m_jit.storePtr(addressGPR, myScratch);
m_jit.move(AssemblyHelpers::TrustedImmPtr(myScratch + 1), addressGPR);
m_jit.storeDouble(FPRInfo::fpRegT0, addressGPR);
AssemblyHelpers::Jump positive = m_jit.branch32(AssemblyHelpers::GreaterThanOrEqual, recovery.gpr(), AssemblyHelpers::TrustedImm32(0));
m_jit.convertInt32ToDouble(recovery.gpr(), FPRInfo::fpRegT0);
m_jit.addDouble(AssemblyHelpers::AbsoluteAddress(&AssemblyHelpers::twoToThe32), FPRInfo::fpRegT0);
if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
m_jit.move(AssemblyHelpers::TrustedImmPtr(scratchBuffer + currentPoisonIndex), addressGPR);
m_jit.storeDouble(FPRInfo::fpRegT0, addressGPR);
} else
m_jit.storeDouble(FPRInfo::fpRegT0, AssemblyHelpers::addressFor((VirtualRegister)operand));
AssemblyHelpers::Jump done = m_jit.jump();
positive.link(&m_jit);
if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
m_jit.store32(recovery.gpr(), reinterpret_cast<char*>(scratchBuffer + currentPoisonIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload));
m_jit.store32(AssemblyHelpers::TrustedImm32(JSValue::Int32Tag), reinterpret_cast<char*>(scratchBuffer + currentPoisonIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag));
} else {
m_jit.store32(recovery.gpr(), AssemblyHelpers::payloadFor((VirtualRegister)operand));
m_jit.store32(AssemblyHelpers::TrustedImm32(JSValue::Int32Tag), AssemblyHelpers::tagFor((VirtualRegister)operand));
}
done.link(&m_jit);
m_jit.move(AssemblyHelpers::TrustedImmPtr(myScratch + 1), addressGPR);
m_jit.loadDouble(addressGPR, FPRInfo::fpRegT0);
m_jit.loadPtr(myScratch, addressGPR);
if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
m_poisonScratchIndices[exit.variableForIndex(index)] = currentPoisonIndex;
currentPoisonIndex++;
}
break;
}
default:
break;
}
}
if (haveFPRs) {
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
if (recovery.technique() != InFPR)
continue;
if (exit.isVariable(index) && poisonedVirtualRegisters[exit.variableForIndex(index)]) {
m_jit.storeDouble(recovery.fpr(), scratchBuffer + currentPoisonIndex);
m_poisonScratchIndices[exit.variableForIndex(index)] = currentPoisonIndex;
currentPoisonIndex++;
} else
m_jit.storeDouble(recovery.fpr(), AssemblyHelpers::addressFor((VirtualRegister)exit.operandForIndex(index)));
}
}
ASSERT(currentPoisonIndex == numberOfPoisonedVirtualRegisters);
if (numberOfDisplacedVirtualRegisters) {
if (numberOfDisplacedVirtualRegisters * 2 <= GPRInfo::numberOfRegisters) {
unsigned displacementIndex = 0;
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
if (recovery.technique() != DisplacedInRegisterFile)
continue;
m_jit.load32(AssemblyHelpers::payloadFor(recovery.virtualRegister()), GPRInfo::toRegister(displacementIndex++));
m_jit.load32(AssemblyHelpers::tagFor(recovery.virtualRegister()), GPRInfo::toRegister(displacementIndex++));
}
displacementIndex = 0;
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
if (recovery.technique() != DisplacedInRegisterFile)
continue;
m_jit.store32(GPRInfo::toRegister(displacementIndex++), AssemblyHelpers::payloadFor((VirtualRegister)exit.operandForIndex(index)));
m_jit.store32(GPRInfo::toRegister(displacementIndex++), AssemblyHelpers::tagFor((VirtualRegister)exit.operandForIndex(index)));
}
} else {
unsigned scratchIndex = numberOfPoisonedVirtualRegisters;
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
if (recovery.technique() != DisplacedInRegisterFile)
continue;
m_jit.load32(AssemblyHelpers::payloadFor(recovery.virtualRegister()), GPRInfo::regT0);
m_jit.load32(AssemblyHelpers::tagFor(recovery.virtualRegister()), GPRInfo::regT1);
m_jit.store32(GPRInfo::regT0, reinterpret_cast<char*>(scratchBuffer + scratchIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload));
m_jit.store32(GPRInfo::regT1, reinterpret_cast<char*>(scratchBuffer + scratchIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag));
scratchIndex++;
}
scratchIndex = numberOfPoisonedVirtualRegisters;
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
if (recovery.technique() != DisplacedInRegisterFile)
continue;
m_jit.load32(reinterpret_cast<char*>(scratchBuffer + scratchIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload), GPRInfo::regT0);
m_jit.load32(reinterpret_cast<char*>(scratchBuffer + scratchIndex) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag), GPRInfo::regT1);
m_jit.store32(GPRInfo::regT0, AssemblyHelpers::payloadFor((VirtualRegister)exit.operandForIndex(index)));
m_jit.store32(GPRInfo::regT1, AssemblyHelpers::tagFor((VirtualRegister)exit.operandForIndex(index)));
scratchIndex++;
}
ASSERT(scratchIndex == numberOfPoisonedVirtualRegisters + numberOfDisplacedVirtualRegisters);
}
}
if (numberOfPoisonedVirtualRegisters) {
for (int virtualRegister = 0; virtualRegister < (int)exit.m_variables.size(); ++virtualRegister) {
if (!poisonedVirtualRegisters[virtualRegister])
continue;
const ValueRecovery& recovery = exit.m_variables[virtualRegister];
switch (recovery.technique()) {
case InGPR:
case UnboxedInt32InGPR:
case UnboxedBooleanInGPR: {
m_jit.load32(reinterpret_cast<char*>(scratchBuffer + poisonIndex(virtualRegister)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload), GPRInfo::regT0);
m_jit.store32(GPRInfo::regT0, AssemblyHelpers::payloadFor((VirtualRegister)virtualRegister));
uint32_t tag = JSValue::EmptyValueTag;
if (recovery.technique() == InGPR)
tag = JSValue::CellTag;
else if (recovery.technique() == UnboxedInt32InGPR)
tag = JSValue::Int32Tag;
else
tag = JSValue::BooleanTag;
m_jit.store32(AssemblyHelpers::TrustedImm32(tag), AssemblyHelpers::tagFor((VirtualRegister)virtualRegister));
break;
}
case InFPR:
case InPair:
case UInt32InGPR:
m_jit.load32(reinterpret_cast<char*>(scratchBuffer + poisonIndex(virtualRegister)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload), GPRInfo::regT0);
m_jit.load32(reinterpret_cast<char*>(scratchBuffer + poisonIndex(virtualRegister)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag), GPRInfo::regT1);
m_jit.store32(GPRInfo::regT0, AssemblyHelpers::payloadFor((VirtualRegister)virtualRegister));
m_jit.store32(GPRInfo::regT1, AssemblyHelpers::tagFor((VirtualRegister)virtualRegister));
break;
default:
break;
}
}
}
if (haveConstants) {
if (haveUndefined) {
m_jit.move(AssemblyHelpers::TrustedImm32(jsUndefined().payload()), GPRInfo::regT0);
m_jit.move(AssemblyHelpers::TrustedImm32(jsUndefined().tag()), GPRInfo::regT1);
}
for (int index = 0; index < exit.numberOfRecoveries(); ++index) {
const ValueRecovery& recovery = exit.valueRecovery(index);
if (recovery.technique() != Constant)
continue;
if (recovery.constant().isUndefined()) {
m_jit.store32(GPRInfo::regT0, AssemblyHelpers::payloadFor((VirtualRegister)exit.operandForIndex(index)));
m_jit.store32(GPRInfo::regT1, AssemblyHelpers::tagFor((VirtualRegister)exit.operandForIndex(index)));
} else {
m_jit.store32(AssemblyHelpers::TrustedImm32(recovery.constant().payload()), AssemblyHelpers::payloadFor((VirtualRegister)exit.operandForIndex(index)));
m_jit.store32(AssemblyHelpers::TrustedImm32(recovery.constant().tag()), AssemblyHelpers::tagFor((VirtualRegister)exit.operandForIndex(index)));
}
}
}
m_jit.add32(AssemblyHelpers::Imm32(1), AssemblyHelpers::AbsoluteAddress(&exit.m_count));
m_jit.move(AssemblyHelpers::TrustedImmPtr(m_jit.codeBlock()), GPRInfo::regT0);
m_jit.load32(AssemblyHelpers::Address(GPRInfo::regT0, CodeBlock::offsetOfSpeculativeFailCounter()), GPRInfo::regT2);
m_jit.load32(AssemblyHelpers::Address(GPRInfo::regT0, CodeBlock::offsetOfSpeculativeSuccessCounter()), GPRInfo::regT1);
m_jit.add32(AssemblyHelpers::Imm32(1), GPRInfo::regT2);
m_jit.add32(AssemblyHelpers::Imm32(-1), GPRInfo::regT1);
m_jit.store32(GPRInfo::regT2, AssemblyHelpers::Address(GPRInfo::regT0, CodeBlock::offsetOfSpeculativeFailCounter()));
m_jit.store32(GPRInfo::regT1, AssemblyHelpers::Address(GPRInfo::regT0, CodeBlock::offsetOfSpeculativeSuccessCounter()));
m_jit.move(AssemblyHelpers::TrustedImmPtr(m_jit.baselineCodeBlock()), GPRInfo::regT0);
AssemblyHelpers::Jump fewFails = m_jit.branch32(AssemblyHelpers::BelowOrEqual, GPRInfo::regT2, AssemblyHelpers::Imm32(m_jit.codeBlock()->largeFailCountThreshold()));
m_jit.mul32(AssemblyHelpers::Imm32(Options::desiredSpeculativeSuccessFailRatio), GPRInfo::regT2, GPRInfo::regT2);
AssemblyHelpers::Jump lowFailRate = m_jit.branch32(AssemblyHelpers::BelowOrEqual, GPRInfo::regT2, GPRInfo::regT1);
m_jit.store32(AssemblyHelpers::Imm32(Options::executionCounterValueForOptimizeNextInvocation), AssemblyHelpers::Address(GPRInfo::regT0, CodeBlock::offsetOfExecuteCounter()));
AssemblyHelpers::Jump doneAdjusting = m_jit.jump();
fewFails.link(&m_jit);
lowFailRate.link(&m_jit);
m_jit.store32(AssemblyHelpers::Imm32(m_jit.baselineCodeBlock()->counterValueForOptimizeAfterLongWarmUp()), AssemblyHelpers::Address(GPRInfo::regT0, CodeBlock::offsetOfExecuteCounter()));
doneAdjusting.link(&m_jit);
if (exit.m_lastSetOperand != std::numeric_limits<int>::max()) {
m_jit.load32(AssemblyHelpers::payloadFor((VirtualRegister)exit.m_lastSetOperand), GPRInfo::cachedResultRegister);
m_jit.load32(AssemblyHelpers::tagFor((VirtualRegister)exit.m_lastSetOperand), GPRInfo::cachedResultRegister2);
}
ASSERT(m_jit.baselineCodeBlock()->getJITType() == JITCode::BaselineJIT);
m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(m_jit.baselineCodeBlock()), AssemblyHelpers::addressFor((VirtualRegister)RegisterFile::CodeBlock));
for (CodeOrigin codeOrigin = exit.m_codeOrigin; codeOrigin.inlineCallFrame; codeOrigin = codeOrigin.inlineCallFrame->caller) {
InlineCallFrame* inlineCallFrame = codeOrigin.inlineCallFrame;
CodeBlock* baselineCodeBlock = m_jit.baselineCodeBlockFor(codeOrigin);
CodeBlock* baselineCodeBlockForCaller = m_jit.baselineCodeBlockFor(inlineCallFrame->caller);
Vector<BytecodeAndMachineOffset>& decodedCodeMap = m_jit.decodedCodeMapFor(baselineCodeBlockForCaller);
unsigned returnBytecodeIndex = inlineCallFrame->caller.bytecodeIndex + OPCODE_LENGTH(op_call);
BytecodeAndMachineOffset* mapping = binarySearch<BytecodeAndMachineOffset, unsigned, BytecodeAndMachineOffset::getBytecodeIndex>(decodedCodeMap.begin(), decodedCodeMap.size(), returnBytecodeIndex);
ASSERT(mapping);
ASSERT(mapping->m_bytecodeIndex == returnBytecodeIndex);
void* jumpTarget = baselineCodeBlockForCaller->getJITCode().executableAddressAtOffset(mapping->m_machineCodeOffset);
GPRReg callerFrameGPR;
if (inlineCallFrame->caller.inlineCallFrame) {
m_jit.add32(AssemblyHelpers::Imm32(inlineCallFrame->caller.inlineCallFrame->stackOffset * sizeof(EncodedJSValue)), GPRInfo::callFrameRegister, GPRInfo::regT3);
callerFrameGPR = GPRInfo::regT3;
} else
callerFrameGPR = GPRInfo::callFrameRegister;
m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(baselineCodeBlock), AssemblyHelpers::addressFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::CodeBlock)));
m_jit.store32(AssemblyHelpers::Imm32(JSValue::CellTag), AssemblyHelpers::tagFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ScopeChain)));
m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(inlineCallFrame->callee->scope()), AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ScopeChain)));
m_jit.store32(AssemblyHelpers::Imm32(JSValue::CellTag), AssemblyHelpers::tagFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::CallerFrame)));
m_jit.storePtr(callerFrameGPR, AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::CallerFrame)));
m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(jumpTarget), AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ReturnPC)));
m_jit.store32(AssemblyHelpers::Imm32(inlineCallFrame->arguments.size()), AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::ArgumentCount)));
m_jit.store32(AssemblyHelpers::Imm32(JSValue::CellTag), AssemblyHelpers::tagFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::Callee)));
m_jit.storePtr(AssemblyHelpers::TrustedImmPtr(inlineCallFrame->callee.get()), AssemblyHelpers::payloadFor((VirtualRegister)(inlineCallFrame->stackOffset + RegisterFile::Callee)));
}
if (exit.m_codeOrigin.inlineCallFrame)
m_jit.addPtr(AssemblyHelpers::Imm32(exit.m_codeOrigin.inlineCallFrame->stackOffset * sizeof(EncodedJSValue)), GPRInfo::callFrameRegister);
CodeBlock* baselineCodeBlock = m_jit.baselineCodeBlockFor(exit.m_codeOrigin);
Vector<BytecodeAndMachineOffset>& decodedCodeMap = m_jit.decodedCodeMapFor(baselineCodeBlock);
BytecodeAndMachineOffset* mapping = binarySearch<BytecodeAndMachineOffset, unsigned, BytecodeAndMachineOffset::getBytecodeIndex>(decodedCodeMap.begin(), decodedCodeMap.size(), exit.m_codeOrigin.bytecodeIndex);
ASSERT(mapping);
ASSERT(mapping->m_bytecodeIndex == exit.m_codeOrigin.bytecodeIndex);
void* jumpTarget = baselineCodeBlock->getJITCode().executableAddressAtOffset(mapping->m_machineCodeOffset);
ASSERT(GPRInfo::regT2 != GPRInfo::cachedResultRegister && GPRInfo::regT2 != GPRInfo::cachedResultRegister2);
m_jit.move(AssemblyHelpers::TrustedImmPtr(jumpTarget), GPRInfo::regT2);
m_jit.jump(GPRInfo::regT2);
#if DFG_ENABLE(DEBUG_VERBOSE)
fprintf(stderr, " -> %p\n", jumpTarget);
#endif
}
} }
#endif // ENABLE(DFG_JIT) && USE(JSVALUE32_64)