42_KFS/libbozo/headers/sys/io.h

#pragma once

#include <stdint.h>

static inline void outb(uint16_t port, uint8_t val)
{
	__asm__ volatile("outb %b0, %w1" : : "a"(val), "Nd"(port) : "memory");
}

static inline uint8_t inb(uint16_t port)
{
	uint8_t ret;
	__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
	return ret;
}

static inline void outw(uint16_t port, uint16_t val)
{
	__asm__ volatile("outb %b0, %w1" : : "a"(val), "Nd"(port) : "memory");
}

static inline uint16_t inw(uint16_t port)
{
	uint8_t ret;
	__asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
	return ret;
}