sim_proc.h

run mips program using C++

/*
 * The skeleton gives two classes: Program and Simulator.
 *
 * The Program class stores all information of the given assembly program, and
 * the Simulator class realizes the assembly language simulator.
 *
 * Basically, you are asked to implement the assigned functions in Simulator.
 * You can make use of the functions provided in the Program class, and
 * you are not suggested to make changes in the Program class, while you may
 * make small changes according to your implementation.
 *
 * NOTICE: We can not guarantee the appearance of any possible bug!!
 *
 * The start address of the program is fixed to zero, i.e. PC should be initialzed to zero.
 *
 * There is one limitation to the format of the program that the label should occupy a single line,
 * which means you should write
 *		Label:
 *		add $s0, $t0, $t1
 * The format of
 *		Label: add $s0, $t0, $t1
 * may cause an error in the program.
 *
 * Compiled and tested under VC6.0, compitable with VC7.0 or above
 *
 *			Vincent Liu, Andy He
 *			       14 Apr 2007
 */

#ifndef _SIMULATOR_H_
#define _SIMULATOR_H_

#include "structures.h"
#include "loader.h"


// the simulator class, you mainly need to work on it
class Simulator
{
public:
	// the functions you are going to implement
	// if necessarily, please change the type of the params and return values of the
	// first five functions used for the five phases of going through one instruction
	unsigned int Fetch(unsigned int PC);
	unsigned int Decode(const unsigned int IR);
	unsigned int Execute(const unsigned int IR);
	unsigned int MemoryAccess(const unsigned int IR);
	unsigned int WriteBack(const unsigned int IR);
	void	ComputeSignals(int phase, const unsigned int IR);	// compute the values of all signals

	// the function can be changed according to your implementation
	int StartSimulation(Program p);		// call this function to start a simulation

	// the function you are not allowed to modify
	void PrintAllSignalsAndRegs();		// print out the values of all signals and 'used' registers
	unsigned int GetOP(const unsigned int IR);
	unsigned int GetRS(const unsigned int IR);
	unsigned int GetRT(const unsigned int IR);
	unsigned int GetRD(const unsigned int IR);
	unsigned int GetSH(const unsigned int IR);
	unsigned int GetFN(const unsigned int IR);
	unsigned int GetIM(const unsigned int IR);
	unsigned int GetAD(const unsigned int IR);
	void SetRD(const unsigned int IR, unsigned int value);
	void SetRT(const unsigned int IR, unsigned int value);

	Simulator();
	~Simulator();

private:
	unsigned int PC;		// the PC register
	unsigned int A, B;		// the A, B registers
	unsigned int ALUOut;	// the ALUOut register
	unsigned int MDR;		// the MDR register

	SignalSet	 signals;	// signal set
	Program		 prog;		// an instance of the treated Program
};

#endif // _SIMULATOR_H_

int getInputPram(int argc, char** argv);
void printTitle();
FILE *fp;
char outputFile[MAX_FILE_NAME];
char inputFile[MAX_FILE_NAME];
bool ifPrintOut;
bool ifWriteToFile;