#ifndef KERNEL_IO_H
#define KERNEL_IO_H

#include <stdint.h>

/**
 * Wrapper function that reads a byte from the specified I/O port.
 *
 * "=a" (result) - put al register in the `result` var when finished
 * "d" (port) - load edx with the specified `port`
 *
 * @param port
 * @return the read byte
 */
uint8_t io_byte_in(uint16_t port);

/**
 * Wrapper function that writes a byte to the specified I/O port.
 *
 * "a" (data) - load eal with `data`
 * "d" (port) - load edx with `port`
 *
 * @param port
 * @param data
 */
void io_byte_out(uint16_t port, uint8_t data);

/**
 * Wrapper function that reads a word from the specified I/O port.
 *
 * "=a" (result) - put eax register in the `result` var when finished
 * "d" (port) - load edx with the specified `port`
 *
 * @param port
 * @return the read word
 */
uint16_t io_word_in(uint16_t port);

/**
 * Wrapper function that writes a word to the specified I/O port.
 *
 * "a" (data) - load eax with `data`
 * "d" (port) - load edx with `port`
 *
 * @param port
 * @param data
 */
void io_word_out(uint16_t port, uint16_t data);

#endif //KERNEL_IO_H