Subversion Repositories scarm

// scARMInstruction.h: interface for the scARMInstruction class.

//

//////////////////////////////////////////////////////////////////////

#ifndef INSTRUCTIONS_H

#define INSTRUCTIONS_H

#include"scTypes.h"

#include ".\components\Registers\scRegisterFile.h"

#include ".\components\BarrelShifter\scBarrelShifter.h"

#include ".\components\ALU\scALU.h"

// used to package the different behavoir of the different instruciton.

const uint32_t V_FLAG=0x10000000;

const uint32_t C_FLAG=0x20000000;

const uint32_t Z_FLAG=0x40000000;

const uint32_t N_FLAG=0x80000000;

const uint32_t CZ_FLAGS=0x60000000;

const uint32_t NV_FLAGS=0x90000000;

///////////////////////////////

// Defines the types for ARM instructions. For each instruction I've 

// defined the bitfield typedef and a mask/signiture for testing if 

// an instruction is of that type.

/////////////////////////////////

/* General instruction */

typedef union ITAG

{

  uint32_t raw;

 //  BRANCH   branch;

} INST;

class scARMInstruction

{

private:

        virtual void Decode(uint32_t nI);

        // used in stages of EX, MEM  and WB

        //virtual void exe();

        //virtual void mem();

        //virtual void wb();

public:

        virtual scARMInstruction* Create(uint32_t);

        scARMInstruction();

        virtual ~scARMInstruction();

public:

COND get_cond(uint32_t nI);

};

#endif