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/**
* @module ccpu
* @author Guenther Neuwirth (0626638), Manuel Mausz (0728348)
* @brief CPU implementation. Used as a container for memory and instructions.
* Implements a run method to execute the program (= the instructions).
* @date 10.05.2009
*/
#ifndef CCPU_H
#define CCPU_H 1
#include <iostream>
#include <set>
#include "cdat.h"
#include "cmem.h"
#include "cprogram.h"
#include "cdisplay.h"
/**
* @class CCPU
*
* CPU implementation. Used as a container for memory and instructions.
* Implements a run method to execute the program (= the instructions).
*/
class CCPU
{
public:
/**
* @method CCPU
* @brief Default ctor
* @param cnt number of registers to allocate for this cpu
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
CCPU(const unsigned cnt);
/**
* @method ~CCPU
* @brief Default dtor
* @param -
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
~CCPU();
/**
* @method getRegisterCount
* @brief get number of registers
* @param -
* @return number of registers
* @globalvars none
* @exception none
* @conditions none
*/
const unsigned getRegisterCount() const
{
return m_regcnt;
}
/**
* @method getRegisters
* @brief get pointer to registers array
* @param -
* @return pointer to registers array
* @globalvars none
* @exception none
* @conditions none
*/
CDat *getRegisters() const
{
return m_registers;
}
/**
* @method setMemory
* @brief set memory of cpu
* @param memory pointer to memory
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
void setMemory(CMem *memory)
{
m_memory = memory;
}
/**
* @method getMemory
* @brief get pointer to memory
* @param -
* @return pointer to memory
* @globalvars none
* @exception none
* @conditions none
*/
CMem *getMemory() const
{
return m_memory;
}
/**
* @method setProgram
* @brief set program to execute
* @param program pointer to program
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
void setProgram(const CProgram *program)
{
m_program = program;
}
/**
* @method getProgram
* @brief get pointer to program
* @param -
* @return pointer to program
* @globalvars none
* @exception none
* @conditions none
*/
const CProgram *getProgram()
{
return m_program;
}
/**
* @method getDisplays
* @brief get set of pointers to displays
* @param -
* @return reference to set of pointers to displays
* @globalvars none
* @exception none
* @conditions none
*/
const std::set<CDisplay *>& getDisplays()
{
return m_displays;
}
/**
* @method setFlagZero
* @brief set zero flag
* @param value new value of zero flag
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
void setFlagZero(const bool value)
{
m_flagzero = value;
}
/**
* @method getFlagZero
* @brief get value of zero flag
* @param -
* @return value of zero flag
* @globalvars none
* @exception none
* @conditions none
*/
const bool getFlagZero()
{
return m_flagzero;
}
/**
* @method setFlagSign
* @brief set sign flag
* @param value new value of sign flag
* @return -
* @globalvars none
* @exception none
* @conditions none
*/
void setFlagSign(const bool value)
{
m_flagsign = value;
}
/**
* @method getFlagSign
* @brief get value of sign flag
* @param -
* @return value of sign flag
* @globalvars none
* @exception none
* @conditions none
*/
const bool getFlagSign()
{
return m_flagsign;
}
/**
* @method run
* @brief execute current program
* @param -
* @return -
* @globalvars none
* @exception std::runtime_error
* @conditions none
*/
void run();
#if DEBUG
/**
* @method dumpRegisters
* @brief dump content of registers to outputstream
* @param out outputstream to write to
* @return void
* @globalvars none
* @exception none
* @conditions none
*/
void dumpRegisters(std::ostream& out);
#endif
private:
/* members */
CDat *m_registers;
unsigned m_regcnt;
CMem *m_memory;
const CProgram *m_program;
std::set<CDisplay *> m_displays;
bool m_flagzero;
bool m_flagsign;
};
#endif
/* vim: set et sw=2 ts=2: */
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