void FunctionEntry::memAlloc(MemoryMgr &mm){
memory_mgr_ = MemoryMgr();
const SymTab* st = this->symTab();
bool p_var = true;
if(st!=NULL){
for(SymTab::const_iterator i = st->begin(); i != st->end(); ++i){
if((*i)->kind()==SymTabEntry::Kind::VARIABLE_KIND){
VariableEntry* ve = (VariableEntry*) (*i);
if(ve->varKind()==VariableEntry::VarKind::PARAM_VAR && p_var){
//Parameters
ve->offSet(memory_mgr_.getNextAddress());
} else {
if(p_var){
//Set control_link_ and return_address_
returnLabel(memory_mgr_.getNextAddress());
returnOffset(memory_mgr_.getNextAddress());
controlLink(memory_mgr_.getNextAddress());
p_var = false;
}
//Local variables declared in function
ve->memAlloc(memory_mgr_);
}
}
}
if(p_var){
returnLabel(memory_mgr_.getNextAddress());
returnOffset(memory_mgr_.getNextAddress());
controlLink(memory_mgr_.getNextAddress());
}
}
if(body()!=NULL){
body()->memAlloc(memory_mgr_);
//Used for returning in case function reaches the end of its body without a return statement
mem_reg_ = memory_mgr_.getNextRegister(true);
memory_mgr_.addRegister(mem_reg_);
label_reg_ = memory_mgr_.getNextRegister(true);
memory_mgr_.addRegister(label_reg_);
memory_mgr_.freeRegister(mem_reg_);
memory_mgr_.freeRegister(label_reg_);
}
}
