KimisOS/src/kernel/drivers/cpuio.h

33 lines
774 B
C

#pragma once
#include <stdint.h>
inline void outb(uint16_t port, uint8_t data){
asm volatile ("outb %0, %1" :: "a"(data), "Nd"(port));
}
inline void outw(uint16_t port, uint16_t data){
asm volatile ("outw %0, %1" :: "a"(data), "Nd"(port));
}
inline uint8_t inb(uint16_t port){
uint8_t byte = 0;
asm volatile ("inb %1, %0" : "=a"(byte) : "Nd"(port));
return byte;
}
inline uint16_t inw(uint16_t port){
uint16_t word = 0;
asm volatile ("inw %1, %0" : "=a"(word) : "Nd"(port));
return word;
}
inline void outl(uint16_t port, uint32_t data){
asm volatile ("outl %0, %1" :: "a"(data), "Nd"(port));
}
inline uint32_t inl(uint16_t port){
uint32_t byte = 0;
asm volatile ("inl %1, %0" : "=a"(byte) : "Nd"(port));
return byte;
}