#include "port.h" uint8_t port_byte_in (uint8_t port) { uint8_t result; __asm__("in %%dx, %%al" : "=a" (result) : "d" (port)); return result; } void port_byte_out(uint8_t port, uint8_t data) { __asm__("out %%al, %%dx" : :"a" (data), "d" (port)); } uint16_t port_word_in (uint16_t port) { uint16_t result; __asm__("in %%dx, %%ax" : "=a" (result) : "d" (port)); return result; } void port_word_out (uint16_t port, uint16_t data) { __asm__("out %%ax, %%dx" : :"a" (data), "d" (port)); }