#ifndef _REGISTERS_H_

#define _REGISTERS_H_

#include <stdint.h>

#include <stdbool.h>

#include "../endian.h"

#define FLAG_CARRY     0x01

#define FLAG_ZERO      0x02

#define FLAG_INTERRUPT 0x04

#define FLAG_DECIMAL   0x08

#define FLAG_INDEX_WIDTH 0x10

#define FLAG_MEMORY_WIDTH  0x20

#define FLAG_OVERFLOW  0x40

#define FLAG_SIGN      0x80

// For 65C02

#define FLAG_BREAK FLAG_INDEX_WIDTH

#define FLAG_CONSTANT FLAG_MEMORY_WIDTH

//6502 CPU registers

struct regs

{

    LOW_HIGH_UNION(c, a, b);

    LOW_HIGH_UNION(x, xl, xh);

    LOW_HIGH_UNION(y, yl, yh);

    uint16_t dp;

    uint16_t sp;

    uint8_t db;

    uint16_t pc;

    uint8_t k;

    uint8_t status;

    uint8_t e;

    bool is65c816;

};

void increment_wrap_at_page_boundary(uint16_t *value);

void decrement_wrap_at_page_boundary(uint16_t *value);

uint16_t direct_page_add(uint16_t offset);

#endif