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storageunit.cpp
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storageunit.cpp
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#include "storageunit.h"
StorageUnit::StorageUnit(QVector<u_int16_t> &_component_ram, QVector<u_int16_t> &_component_register, u_int16_t &_status_register, u_int16_t &_programm_counter, u_int16_t &_stack_pointer) : component_ram(_component_ram), component_register(_component_register), status_register(_status_register), programm_counter(_programm_counter), stack_pointer(_stack_pointer)
{
}
u_int16_t StorageUnit::getRamValue(u_int16_t _address)
{
if(isValidRamAddress(_address))
{
return component_ram[_address>>1];
}
else
{
qDebug() << "getRamValue The address is not valid. Exit" << _address;
exit(0);
}
}
void StorageUnit::setRamValue(u_int16_t _value, u_int16_t _address)
{
if(isValidRamAddress(_address))
{
component_ram[_address>>1] = _value;
}
else
{
qDebug() << "setRamValue The address is not valid. Exit" << _address;
exit(0);
}
}
bool StorageUnit::isValidRamAddress(u_int16_t _value)
{
return (_value%2==0);
}
u_int16_t StorageUnit::getRegisterValue(u_int16_t _address)
{
if(isValidRegisterAddress(_address))
{
return(component_register[_address]);
}
else
{
qDebug() << "getRegisterValue The address is not valid. Exit" << _address;
exit(0);
}
}
void StorageUnit::setRegisterValue(u_int16_t _value, u_int16_t _address)
{
if(isValidRegisterAddress(_address))
{
component_register[_address] = _value;
}
else
{
qDebug() << "setRegisterValue The address is not valid. Exit" << _address;
exit(0);
}
}
bool StorageUnit::isValidRegisterAddress(u_int16_t _value)
{
if(_value > component_register.size())
{
return false;
}
return true;
}
u_int16_t StorageUnit::getRamValueViaRegister(u_int16_t _register_address)
{
return getRamValue(getRegisterValue(_register_address));
}
void StorageUnit::setRamValueViaRegister(u_int16_t _register_with_value, u_int16_t _register_with_address)
{
u_int16_t value = getRegisterValue(_register_with_value);
u_int16_t address = getRegisterValue(_register_with_address);
setRamValue(value,address);
}
u_int16_t StorageUnit::getStatusRegister()
{
return this->status_register;
}
void StorageUnit::setStatusRegister(u_int16_t _value)
{
status_register = _value;
}
u_int16_t StorageUnit::getProgrammCounter()
{
return this->programm_counter;
}
void StorageUnit::setProgrammCounter(u_int16_t _value)
{
programm_counter = _value;
}
u_int16_t StorageUnit::getStackPointer()
{
return this->stack_pointer;
}
void StorageUnit::setStackPointer(u_int16_t _value)
{
stack_pointer = _value;
}
void StorageUnit::pop(u_int16_t _register)
{
setStackPointer(getStackPointer()+2);
setRegisterValue(getRamValue(getStackPointer()),_register);
}
void StorageUnit::push(u_int16_t _register)
{
setRamValue(getRegisterValue(_register),getStackPointer());
setStackPointer(getStackPointer()-2);
}
void StorageUnit::executeCommand(u_int16_t _command, u_int16_t _secondHalfOfFirstOcted, u_int16_t _completeSecondOcted)
{
if(_command == COMMAND_LOAD)
{
qDebug() << "COMMAND_LOAD into Register Address" << _secondHalfOfFirstOcted << "from RAM Address " << _completeSecondOcted;
setRegisterValue(getRamValue(_completeSecondOcted), _secondHalfOfFirstOcted);
}
else if(_command == COMMAND_STORE)
{
qDebug() << "COMMAND_STORE into RAM Address" << _completeSecondOcted << "from Register Address " << _secondHalfOfFirstOcted;
setRamValue(getRegisterValue(_secondHalfOfFirstOcted), _completeSecondOcted);
}
else if(_command == COMMAND_LOAD_REGISTER)
{
qDebug() << "COMMAND_LOAD_REGISTER into Register Address" << Helper::getFirstHalfOfOcted(_completeSecondOcted) << "from Register " << _secondHalfOfFirstOcted;
setRegisterValue(getRamValueViaRegister(_secondHalfOfFirstOcted), Helper::getFirstHalfOfOcted(_completeSecondOcted));
}
else if(_command == COMMAND_STORE_REGISTER)
{
qDebug() << "COMMAND_STORE_REGISTER Value from Register " << _secondHalfOfFirstOcted << "into Address from Register " << Helper::getFirstHalfOfOcted(_completeSecondOcted);
setRamValueViaRegister(_secondHalfOfFirstOcted, Helper::getFirstHalfOfOcted(_completeSecondOcted));
}
else if(_command == COMMAND_PUSH)
{
qDebug() << "COMMAND_PUSH Register " << _secondHalfOfFirstOcted << " to " << QString::number(getStackPointer(),16);
push(_secondHalfOfFirstOcted);
}
else if(_command == COMMAND_POP)
{
qDebug() << "COMMAND_POP Register " << _secondHalfOfFirstOcted << " from " << QString::number(getStackPointer(),16);
pop(_secondHalfOfFirstOcted);
}
else if(_command == COMMAND_SET_STACK_POINTER)
{
qDebug() << "COMMAND_SET_STACK_POINTER " << QString::number(((_secondHalfOfFirstOcted<<8) + _completeSecondOcted),16);
setStackPointer((_secondHalfOfFirstOcted<<8) + _completeSecondOcted);
}
else
{
qDebug() << "[ERROR][STORAGE UNIT][executeCommand] received " << QString::number(_command,16) << QString::number(_secondHalfOfFirstOcted,16) << QString::number(_completeSecondOcted,16);
}
}