void VariableEntry::memAlloc(int reset_AR)
{
if (varKind() == VariableEntry::GLOBAL_VAR) {
offSet(memAllocUtil(type(), EntryKind::GLOBAL, 0));
LOG("Allocation of GLOBAL name: " << name() << ", offSet: " << offSet());
} else if (varKind() == VariableEntry::LOCAL_VAR) {
offSet(memAllocUtil(type(), EntryKind::LOCAL, reset_AR));
LOG("Allocation of LOCAL, name: " << name() << ", offSet:" << offSet());
} else if (varKind() == VariableEntry::PARAM_VAR) {
offSet(memAllocUtil(type(), EntryKind::FUNCTION_PARAMETER, reset_AR));
LOG("Allocation of PARAM, name: " << name() << ", offSet: " << offSet());
} else {
LOG("Allocation failed for, name: " << name() << ", VarKind not set! Cannot know where to allocate this.");
}
return;
}
CodeBlock* VariableEntry::codeGen(){
CodeBlock* var_block = new CodeBlock();
if(initVal() != NULL){
var_block->append(initVal()->codeGen());
ICode::ICodeType store_type = ICode::ICodeType::STI;
ICode get_addr;
if(varKind() == VariableEntry::VarKind::GLOBAL_VAR){
ICode::ICodeType mov_type = ICode::ICodeType::MOVI;
get_addr = ICode(mov_type,new Value(offSet(),Type::TypeTag::INT),&mem_register_);
} else {
ICode::ICodeType add_type = ICode::ICodeType::ADD;
get_addr = ICode(add_type,&MemoryMgr::basePointerRegister(),new Value(offSet(),Type::TypeTag::INT),&mem_register_);
}
if(type()->tag() == Type::TypeTag::BOOL){
CodeBlock* true_block = new CodeBlock();
ICode store_true_val(store_type,new Value(1,Type::TypeTag::UINT),&mem_register_);
ICode jmp_end(ICode::ICodeType::JMP,endLabel());
true_block->setStartLabel(trueLabel());
true_block->append(get_addr);
true_block->append(store_true_val);
true_block->append(jmp_end);
CodeBlock* false_block = new CodeBlock();
ICode store_false_val(store_type,new Value(0,Type::TypeTag::UINT),&mem_register_);
false_block->setStartLabel(falseLabel());
false_block->append(get_addr);
false_block->append(store_false_val);
false_block->setEndLabel(endLabel());
var_block->append(true_block);
var_block->append(false_block);
} else {
if(initVal()->reg().isFloat()){
store_type = ICode::ICodeType::STF;
}
ICode store_val(store_type,&initVal()->reg(),&mem_register_);
var_block->append(get_addr);
var_block->append(store_val);
}
}
ICode incr_stack(ICode::ICodeType::ADD,&MemoryMgr::stackPointerRegister(),new Value(1,Type::TypeTag::INT),&MemoryMgr::stackPointerRegister());
var_block->append(incr_stack);
return var_block;
}
void VariableEntry::codeGen(IntermediateCodeGen * list)
{
LOG("");
int isInt, regPtr = -1, hackyReg = -1;
Instruction *instr = NULL;
Instruction *getParam = NULL;
Instruction *hackyinstr = NULL;
Instruction *instrAddOffset = NULL;
Value *immediate = NULL;
Value *immediate1 = NULL;
if (type()->isIntegral(type()->tag()) || type()->isBool(type()->tag())) {
setReg(get_vreg_int(), VREG_INT);
isInt = 1;
} else {
setReg(get_vreg_float(), VREG_FLOAT);
isInt = 0;
}
if (varKind() == VariableEntry::VarKind::PARAM_VAR) {
immediate1 = new Value(1, Type::TypeTag::INT);
instr = new Instruction(Instruction::Mnemonic::ADD);
instr->operand_src1(get_vreg_temp_stack(), NULL, VREG_INT);
instr->operand_src2(-1, immediate1, Instruction::OpType::IMM);
instr->operand_dest(get_vreg_temp_stack(), NULL, VREG_INT);
list->addInstruction(instr);
getParam = new Instruction(Instruction::typedMnemonic(isInt, Instruction::Mnemonic::LDI));
getParam->operand_src1(get_vreg_temp_stack(), NULL, VREG_INT);
getParam->operand_dest(getReg(), NULL, reg_type());
list->addInstruction(getParam);
} else if (varKind() == VariableEntry::VarKind::LOCAL_VAR) {
if (initVal()) {
initVal()->codeGen(list);
if (!isInt && initVal()->reg_type() == VREG_INT) {
hackyinstr = new Instruction(Instruction::Mnemonic::MOVIF);
hackyinstr->operand_src1(initVal()->getReg(), NULL, initVal()->reg_type());
hackyReg = get_vreg_float();
hackyinstr->operand_dest(hackyReg, NULL, VREG_FLOAT);
list->addInstruction(hackyinstr);
getParam = new Instruction(Instruction::typedMnemonic(isInt, Instruction::Mnemonic::STI));
getParam->operand_src1(hackyReg, NULL, VREG_FLOAT);
getParam->operand_dest(get_vreg_sp(), NULL, VREG_INT);
list->addInstruction(getParam);
} else {
getParam = new Instruction(Instruction::typedMnemonic(isInt, Instruction::Mnemonic::STI));
getParam->operand_src1(initVal()->getReg(), NULL, initVal()->reg_type());
getParam->operand_dest(get_vreg_sp(), NULL, VREG_INT);
list->addInstruction(getParam);
}
}
immediate1 = new Value(1, Type::TypeTag::INT);
instr = new Instruction(Instruction::Mnemonic::SUB);
instr->operand_src1(get_vreg_sp(), NULL, VREG_INT);
instr->operand_src2(-1, immediate1, Instruction::OpType::IMM);
instr->operand_dest(get_vreg_sp(), NULL, VREG_INT);
list->addInstruction(instr);
} else if (varKind() == VariableEntry::VarKind::GLOBAL_VAR) {
instrAddOffset = new Instruction();
instrAddOffset->opcode(Instruction::Mnemonic::ADD);
instrAddOffset->operand_src1(get_vreg_global(), NULL, VREG_INT);
immediate = new Value(offSet(), Type::TypeTag::INT);
instrAddOffset->operand_src2(-1, immediate, Instruction::OpType::IMM);
regPtr = get_vreg_int();
instrAddOffset->operand_dest(regPtr, NULL, VREG_INT);
list->addInstruction(instrAddOffset);
if (initVal()) {
initVal()->codeGen(list);
instr = new Instruction(Instruction::typedMnemonic(isInt, Instruction::Mnemonic::STI));
instr->operand_dest(regPtr, NULL, VREG_INT);
instr->operand_src1(initVal()->getReg(), NULL, initVal()->reg_type());
list->addInstruction(instr);
}
}
return;
}
