gipu/cpp/vm.h

#ifndef VM_H
#define VM_H
#include "vmas.h"
#include "vmcomp.h"
#include <stdint.h>

#define MOVI_SIZE 4
#define MOVR_SIZE 2
#define GETM_SIZE 4
#define PUTM_SIZE 4
#define ADDI_SIZE 4
enum regs { R0, R1, R2, R3, S0, S1, S2, S3, IP, BP, SP, NUM_REGS };

/*
MEMORY LOCATIONS AND IMMEDIATES ARE 16 BITS LONG
*/
enum ins {
  MOVI,
  MOVR,
  LOAD,
  STOR,
  ADDI,
  ADDR,
  SUBI,
  SUBR,
  XORI,
  XORR,
  NOTI,
  NOTR,
  MULI,
  MULR,
  DIVI,
  DIVR,
  PUSH,
  POOP,
  CALL,
  SHIT,
  NOPE,
  GERM,
  NUM_OPS
};

class VM {
private:
  ////////////////////////
  // VARIABLES
  ////////////////////////

  uint16_t regs[0xb];
  VMComponent ops[NUM_OPS];
  struct flags {
    uint8_t zf : 1;
    uint8_t cf : 1;
  };
  VMAddrSpace as;

  ////////////////////////
  // FUNCTIONS
  ///////////////////////
  void initVariables(void);
  void defineOpcodes(uint8_t * key);
  /*
  DBG UTILS
  */
  uint8_t *reg_name(uint8_t);
  /*
  IMPLEMENTATIONS
  */
  bool exec_movi(void);
  bool exec_movr(void);
  bool exec_movm(void);
  bool exec_getm(void);
  bool exec_putm(void);
  bool exec_addi(void);

public:
  VM(uint8_t * key);
  VM(uint8_t * key, uint8_t *code, uint32_t codesize);
  void status(void);
  void run();
};

#endif