#pragma once

#include <stdint.h>

#include "instruction.h"

extern uint8_t cpu_memory[];

void cpu_reset(void);

void cpu_step(void);

typedef struct cpu_state {
  uint8_t a;
  uint8_t y;
  uint8_t x;
  uint16_t pc;
  uint8_t sp;
  uint8_t status;
} cpu_state_t;

typedef struct cpu_history {
  cpu_state_t state;
  uint8_t pc_mem[3];
  uint16_t value;
} cpu_history_t;

extern cpu_history_t cpu_history[];
extern int cpu_history_len;
extern int cpu_history_ix;

typedef uint16_t (* mode_value_t)(uint16_t);

typedef struct addressing_mode {
  int alen;
  int olen;
  mode_value_t func;
} addressing_mode_t;

extern addressing_mode_t addressing_modes[16];

void cpu_get_state(cpu_state_t * state);