structures.h

run mips program using C++

#ifndef _STRUCTURES_H_
#define _STRUCTURES_H_


#include <assert.h>
#include <iostream>
#include <string.h>
#include <fstream>
#include <math.h>
#include <stdlib.h>


#define MAX_INSTR_NUM	100		// max number of instructions in a program
#define INSTR_TYPE		17		// type of instructions
#define KEY_LENGTH		6
#define REGISTER_NUM	32
#define MAX_LINE_LENGTH 30		// max length of a line of instruction
#define MAX_LABEL_NUM	10
#define LABEL_LENGTH	10
#define MAX_FILE_NAME   30


// the structure of an instruction
typedef struct
{
	unsigned int OP;	// opcode
	unsigned int RS;
	unsigned int RT;
	unsigned int RD;
	unsigned int SH;	// shamt
	unsigned int FN;	// funct
	unsigned int IM;	// immediate number
 	unsigned int AD;	// address
}Instr;


// a line of instruction
typedef struct
{
	unsigned int instrCode;						// 32-bit code of an instruction
	char		 instrName[MAX_LINE_LENGTH];	// a line of instruction in characters
	Instr		 instr;							// the decoded structure of an instruction
}CodeLine;


// the operator structure
typedef struct
{
	int			 type;				// type 0 for R, type 1 for I, type 2 for J, type 3 for jr because it only uses one reg
	unsigned int code;				// the opcode
	unsigned int funct;				// the funct section of the instruction used for distingishing operators
	char		 name[KEY_LENGTH];	// the name of the operator
}Operator;


// the register structure
typedef struct
{
	int used;				// indicate if the register is ever used in the program
	unsigned int code;		// the code of the register
	char name[KEY_LENGTH];	// the name of the register
	unsigned int value;		// the value of the register
}Reg;


// the label structure used to store the labels appearing in the program
typedef struct
{
	unsigned int offset;		// the offset value of the label indicating
	char name[LABEL_LENGTH];	// the name of the label
}Label;


// the set of all signals
typedef struct
{
	unsigned int RegDst;
	unsigned int RegWrite;
	unsigned int MemtoReg;
	unsigned int MemRead;
	unsigned int MemWrite;
	unsigned int IorD;
	unsigned int IRWrite;
	unsigned int ALUSrcA;
	unsigned int ALUSrcB;
	unsigned int PCWrite;
	unsigned int PCWriteCond;
	unsigned int PCSource;
}SignalSet;


#endif // _STRUCTURES_H_