void JIT::compileOpCallVarargs(Instruction* instruction)
{
int callee = instruction[1].u.operand;
int argCountRegister = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
emitLoad(callee, regT1, regT0);
emitLoadPayload(argCountRegister, regT2); // argCount
addPtr(Imm32(registerOffset), regT2, regT3); // registerOffset
emitJumpSlowCaseIfNotJSCell(callee, regT1);
addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
// Speculatively roll the callframe, assuming argCount will match the arity.
mul32(TrustedImm32(sizeof(Register)), regT3, regT3);
addPtr(callFrameRegister, regT3);
store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame, regT3));
storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame, regT3));
move(regT3, callFrameRegister);
move(regT2, regT1); // argCount
emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
int callee = instruction[1].u.operand;
/* Caller always:
- Updates callFrameRegister to callee callFrame.
- Initializes ArgumentCount; CallerFrame; Callee.
For a JS call:
- Caller initializes ScopeChain.
- Callee initializes ReturnPC; CodeBlock.
- Callee restores callFrameRegister before return.
For a non-JS call:
- Caller initializes ScopeChain; ReturnPC; CodeBlock.
- Caller restores callFrameRegister after return.
*/
if (opcodeID == op_call_varargs)
compileLoadVarargs(instruction);
else {
int argCount = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
addPtr(TrustedImm32(registerOffset * sizeof(Register)), callFrameRegister, regT3);
store32(TrustedImm32(argCount), payloadFor(RegisterFile::ArgumentCount, regT3));
} // regT3 holds newCallFrame with ArgumentCount initialized.
emitLoad(callee, regT1, regT0); // regT1, regT0 holds callee.
storePtr(callFrameRegister, Address(regT3, RegisterFile::CallerFrame * static_cast<int>(sizeof(Register))));
emitStore(RegisterFile::Callee, regT1, regT0, regT3);
move(regT3, callFrameRegister);
if (opcodeID == op_call_eval) {
compileCallEval();
return;
}
DataLabelPtr addressOfLinkedFunctionCheck;
BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
Jump slowCase = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
addSlowCase(slowCase);
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
ASSERT_JIT_OFFSET(differenceBetween(addressOfLinkedFunctionCheck, slowCase), patchOffsetOpCallCompareToJump);
ASSERT(m_callStructureStubCompilationInfo.size() == callLinkInfoIndex);
m_callStructureStubCompilationInfo.append(StructureStubCompilationInfo());
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
m_callStructureStubCompilationInfo[callLinkInfoIndex].callType = CallLinkInfo::callTypeFor(opcodeID);
m_callStructureStubCompilationInfo[callLinkInfoIndex].bytecodeIndex = m_bytecodeOffset;
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
sampleCodeBlock(m_codeBlock);
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned)
{
int callee = instruction[1].u.operand;
int argCount = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
// Handle eval
Jump wasEval;
if (opcodeID == op_call_eval) {
JITStubCall stubCall(this, cti_op_call_eval);
stubCall.addArgument(callee, regT0);
stubCall.addArgument(JIT::Imm32(registerOffset));
stubCall.addArgument(JIT::Imm32(argCount));
stubCall.call();
wasEval = branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue())));
}
emitGetVirtualRegister(callee, regT0);
// Check for JSFunctions.
emitJumpSlowCaseIfNotJSCell(regT0);
addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
// Speculatively roll the callframe, assuming argCount will match the arity.
storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
move(Imm32(argCount), regT1);
emitNakedCall(opcodeID == op_construct ? m_globalData->jitStubs->ctiVirtualConstruct() : m_globalData->jitStubs->ctiVirtualCall());
if (opcodeID == op_call_eval)
wasEval.link(this);
sampleCodeBlock(m_codeBlock);
}
void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID)
{
int argCount = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
linkSlowCase(iter);
// Fast check for JS function.
Jump callLinkFailNotObject = emitJumpIfNotJSCell(regT0);
Jump callLinkFailNotJSFunction = branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr));
// Speculatively roll the callframe, assuming argCount will match the arity.
storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
move(Imm32(argCount), regT1);
m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(opcodeID == op_construct ? m_globalData->jitStubs->ctiVirtualConstructLink() : m_globalData->jitStubs->ctiVirtualCallLink());
// Done! - return back to the hot path.
ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_call_eval));
ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_construct));
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_call));
// This handles host functions
callLinkFailNotObject.link(this);
callLinkFailNotJSFunction.link(this);
JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
stubCall.addArgument(regT0);
stubCall.addArgument(JIT::Imm32(registerOffset));
stubCall.addArgument(JIT::Imm32(argCount));
stubCall.call();
sampleCodeBlock(m_codeBlock);
}
void JIT::compileOpCallVarargs(Instruction* instruction)
{
int callee = instruction[1].u.operand;
int argCountRegister = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
emitGetVirtualRegister(argCountRegister, regT1);
emitFastArithImmToInt(regT1);
emitGetVirtualRegister(callee, regT0);
addPtr(Imm32(registerOffset), regT1, regT2);
// Check for JSFunctions.
emitJumpSlowCaseIfNotJSCell(regT0);
addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
// Speculatively roll the callframe, assuming argCount will match the arity.
mul32(TrustedImm32(sizeof(Register)), regT2, regT2);
intptr_t offset = (intptr_t)sizeof(Register) * (intptr_t)RegisterFile::CallerFrame;
addPtr(Imm32((int32_t)offset), regT2, regT3);
addPtr(callFrameRegister, regT3);
storePtr(callFrameRegister, regT3);
addPtr(regT2, callFrameRegister);
emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex)
{
if (opcodeID == op_call_eval) {
compileCallEvalSlowCase(instruction, iter);
return;
}
linkSlowCase(iter);
if (opcodeID == op_tail_call || opcodeID == op_tail_call_varargs || opcodeID == op_tail_call_forward_arguments)
emitRestoreCalleeSaves();
move(TrustedImmPtr(m_callCompilationInfo[callLinkInfoIndex].callLinkInfo), regT2);
m_callCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_vm->getCTIStub(linkCallThunkGenerator).code());
if (opcodeID == op_tail_call || opcodeID == op_tail_call_varargs) {
abortWithReason(JITDidReturnFromTailCall);
return;
}
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
CallLinkInfo* info = m_codeBlock->addCallLinkInfo();
info->setUpCall(CallLinkInfo::Call, CodeOrigin(m_bytecodeOffset), regT0);
linkSlowCase(iter);
int registerOffset = -instruction[4].u.operand;
addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);
loadPtr(Address(stackPointerRegister, sizeof(Register) * JSStack::Callee - sizeof(CallerFrameAndPC)), regT0);
loadPtr(Address(stackPointerRegister, sizeof(Register) * JSStack::Callee - sizeof(CallerFrameAndPC)), regT1);
move(TrustedImmPtr(info), regT2);
emitLoad(JSStack::Callee, regT1, regT0);
MacroAssemblerCodeRef virtualThunk = virtualThunkFor(m_vm, *info);
info->setSlowStub(createJITStubRoutine(virtualThunk, *m_vm, nullptr, true));
emitNakedCall(virtualThunk.code());
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
int callee = instruction[1].u.operand;
int argCount = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
Jump wasEval;
if (opcodeID == op_call_eval) {
JITStubCall stubCall(this, cti_op_call_eval);
stubCall.addArgument(callee);
stubCall.addArgument(JIT::Imm32(registerOffset));
stubCall.addArgument(JIT::Imm32(argCount));
stubCall.call();
wasEval = branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag));
}
emitLoad(callee, regT1, regT0);
DataLabelPtr addressOfLinkedFunctionCheck;
BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
Jump jumpToSlow = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
addSlowCase(jumpToSlow);
ASSERT_JIT_OFFSET(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow), patchOffsetOpCallCompareToJump);
ASSERT(m_callStructureStubCompilationInfo.size() == callLinkInfoIndex);
m_callStructureStubCompilationInfo.append(StructureStubCompilationInfo());
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
m_callStructureStubCompilationInfo[callLinkInfoIndex].isCall = opcodeID != op_construct;
m_callStructureStubCompilationInfo[callLinkInfoIndex].bytecodeIndex = m_bytecodeOffset;
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
// The following is the fast case, only used whan a callee can be linked.
// Fast version of stack frame initialization, directly relative to edi.
// Note that this omits to set up RegisterFile::CodeBlock, which is set in the callee
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT2);
store32(TrustedImm32(JSValue::Int32Tag), tagFor(registerOffset + RegisterFile::ArgumentCount));
store32(Imm32(argCount), payloadFor(registerOffset + RegisterFile::ArgumentCount));
storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
emitStore(registerOffset + RegisterFile::Callee, regT1, regT0);
store32(TrustedImm32(JSValue::CellTag), tagFor(registerOffset + RegisterFile::ScopeChain));
store32(regT2, payloadFor(registerOffset + RegisterFile::ScopeChain));
addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
// Call to the callee
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
if (opcodeID == op_call_eval)
wasEval.link(this);
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
emitGetFromCallFrameHeader64(JSStack::Callee, regT0);
emitNakedCall(m_globalData->getCTIStub(virtualCallGenerator).code());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
emitLoad(JSStack::Callee, regT1, regT0);
emitNakedCall(m_vm->getCTIStub(virtualCallGenerator).code());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEval()
{
JITStubCall stubCall(this, cti_op_call_eval); // Initializes ScopeChain; ReturnPC; CodeBlock.
stubCall.call();
addSlowCase(branch64(Equal, regT0, TrustedImm64(JSValue::encode(JSValue()))));
emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
emitLoad(RegisterFile::Callee, regT1, regT0);
emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEval()
{
JITStubCall stubCall(this, cti_op_call_eval); // Initializes ScopeChain; ReturnPC; CodeBlock.
stubCall.call();
addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag)));
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEval(Instruction* instruction)
{
callOperationWithCallFrameRollbackOnException(operationCallEval);
addSlowCase(branch64(Equal, regT0, TrustedImm64(JSValue::encode(JSValue()))));
emitGetCallerFrameFromCallFrameHeaderPtr(callFrameRegister);
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileCallEval(Instruction* instruction)
{
callOperationWithCallFrameRollbackOnException(operationCallEval);
addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag)));
emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
int callee = instruction[1].u.operand;
int argCount = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
// Handle eval
Jump wasEval;
if (opcodeID == op_call_eval) {
JITStubCall stubCall(this, cti_op_call_eval);
stubCall.addArgument(callee, regT0);
stubCall.addArgument(JIT::Imm32(registerOffset));
stubCall.addArgument(JIT::Imm32(argCount));
stubCall.call();
wasEval = branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue())));
}
// This plants a check for a cached JSFunction value, so we can plant a fast link to the callee.
// This deliberately leaves the callee in ecx, used when setting up the stack frame below
emitGetVirtualRegister(callee, regT0);
DataLabelPtr addressOfLinkedFunctionCheck;
BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
Jump jumpToSlow = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(JSValue::encode(JSValue())));
END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
addSlowCase(jumpToSlow);
ASSERT_JIT_OFFSET(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow), patchOffsetOpCallCompareToJump);
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
m_callStructureStubCompilationInfo[callLinkInfoIndex].isCall = opcodeID != op_construct;
// The following is the fast case, only used whan a callee can be linked.
// Fast version of stack frame initialization, directly relative to edi.
// Note that this omits to set up RegisterFile::CodeBlock, which is set in the callee
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1); // newScopeChain
store32(TrustedImm32(Int32Tag), intTagFor(registerOffset + RegisterFile::ArgumentCount));
store32(Imm32(argCount), intPayloadFor(registerOffset + RegisterFile::ArgumentCount));
storePtr(callFrameRegister, Address(callFrameRegister, (registerOffset + RegisterFile::CallerFrame) * static_cast<int>(sizeof(Register))));
storePtr(regT0, Address(callFrameRegister, (registerOffset + RegisterFile::Callee) * static_cast<int>(sizeof(Register))));
storePtr(regT1, Address(callFrameRegister, (registerOffset + RegisterFile::ScopeChain) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
// Call to the callee
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
if (opcodeID == op_call_eval)
wasEval.link(this);
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
emitLoad(JSStack::Callee, regT1, regT0);
emitNakedCall(m_vm->getCTIStub(virtualCallThunkGenerator).code());
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
emitGetFromCallFrameHeader64(JSStack::Callee, regT0);
emitNakedCall(m_vm->getCTIStub(oldStyleVirtualCallGenerator).code());
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction*, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex)
{
if (opcodeID == op_call_eval) {
compileCallEvalSlowCase(iter);
return;
}
linkSlowCase(iter);
m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(opcodeID == op_construct ? m_globalData->getCTIStub(linkConstructGenerator).code() : m_globalData->getCTIStub(linkCallGenerator).code());
sampleCodeBlock(m_codeBlock);
}
void JIT::compileOpCallVarargsSlowCase(Instruction*, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_call_NotJSFunction);
stubCall.addArgument(regT0);
stubCall.addArgument(regT2);
stubCall.addArgument(regT1);
stubCall.call();
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
load64(Address(stackPointerRegister, sizeof(Register) * JSStack::Callee - sizeof(CallerFrameAndPC)), regT0);
move(TrustedImmPtr(&CallLinkInfo::dummy()), regT2);
emitNakedCall(m_vm->getCTIStub(virtualCallThunkGenerator).code());
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
int callee = instruction[1].u.operand;
linkSlowCaseIfNotJSCell(iter, callee);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_call_NotJSFunction);
stubCall.addArgument(regT1, regT0);
stubCall.addArgument(regT3);
stubCall.addArgument(regT2);
stubCall.call();
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEval(Instruction* instruction)
{
addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1);
storePtr(callFrameRegister, Address(regT1, CallFrame::callerFrameOffset()));
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
callOperation(operationCallEval, regT1);
addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag)));
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned, OpcodeID opcodeID)
{
int argCount = instruction[2].u.operand;
int registerOffset = instruction[3].u.operand;
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
stubCall.addArgument(regT0);
stubCall.addArgument(JIT::Imm32(registerOffset));
stubCall.addArgument(JIT::Imm32(argCount));
stubCall.call();
sampleCodeBlock(m_codeBlock);
}
bool JIT::compileCallEval(const OpCallEval& bytecode)
{
addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1);
storePtr(callFrameRegister, Address(regT1, CallFrame::callerFrameOffset()));
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
callOperation(operationCallEval, regT1);
addSlowCase(branchIfEmpty(regT1));
sampleCodeBlock(m_codeBlock);
emitPutCallResult(bytecode);
return true;
}
void JIT::compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
int callee = instruction[1].u.operand;
linkSlowCaseIfNotJSCell(iter, callee);
Jump notCell = jump();
linkSlowCase(iter);
move(TrustedImm32(JSValue::CellTag), regT1); // Need to restore cell tag in regT1 because it was clobbered.
notCell.link(this);
JITStubCall stubCall(this, cti_op_call_NotJSFunction);
stubCall.addArgument(regT1, regT0);
stubCall.addArgument(regT3);
stubCall.addArgument(regT2);
stubCall.call();
sampleCodeBlock(m_codeBlock);
}
void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
CallLinkInfo* info = m_codeBlock->addCallLinkInfo();
info->setUpCall(CallLinkInfo::Call, CodeOrigin(m_bytecodeOffset), regT0);
linkSlowCase(iter);
int registerOffset = -instruction[4].u.operand;
addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);
load64(Address(stackPointerRegister, sizeof(Register) * CallFrameSlot::callee - sizeof(CallerFrameAndPC)), regT0);
emitDumbVirtualCall(info);
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex)
{
if (opcodeID == op_call_eval) {
compileCallEvalSlowCase(instruction, iter);
return;
}
linkSlowCase(iter);
linkSlowCase(iter);
move(TrustedImmPtr(m_callCompilationInfo[callLinkInfoIndex].callLinkInfo), regT2);
m_callCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_vm->getCTIStub(linkCallThunkGenerator).code());
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
void JIT::compileCallEval(Instruction* instruction)
{
addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1);
callOperationNoExceptionCheck(operationCallEval, regT1);
Jump noException = emitExceptionCheck(InvertedExceptionCheck);
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
exceptionCheck(jump());
noException.link(this);
addSlowCase(branch64(Equal, regT0, TrustedImm64(JSValue::encode(JSValue()))));
addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
emitPutCallResult(instruction);
}
