void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
unsigned result = currentInstruction[1].u.operand;
unsigned thisReg = currentInstruction[2].u.operand;
// We could JIT generate the deref, only calling out to C when the refcount hits zero.
if (m_codeBlock->needsFullScopeChain())
JITStubCall(this, cti_op_ret_scopeChain).call();
emitLoad(result, regT1, regT0);
Jump notJSCell = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
Jump notObject = branch8(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo) + OBJECT_OFFSETOF(TypeInfo, m_type)), Imm32(ObjectType));
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT2);
ret();
notJSCell.link(this);
notObject.link(this);
emitLoad(thisReg, regT1, regT0);
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT2);
ret();
}
void JIT::emit_op_ret(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
// We could JIT generate the deref, only calling out to C when the refcount hits zero.
if (m_codeBlock->needsFullScopeChain())
JITStubCall(this, cti_op_ret_scopeChain).call();
emitLoad(dst, regT1, regT0);
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT2);
ret();
}
void JIT::emit_op_ret(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
// We could JIT generate the deref, only calling out to C when the refcount hits zero.
if (m_codeBlock->needsFullScopeChain()) {
Jump activationNotCreated = branch32(Equal, tagFor(m_codeBlock->activationRegister()), Imm32(JSValue::EmptyValueTag));
JITStubCall(this, cti_op_ret_scopeChain).call();
activationNotCreated.link(this);
}
emitLoad(dst, regT1, regT0);
#ifdef OPT_SCHED
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regLink);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
#else
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT2);
#endif
ret();
}