io.h

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#ifndef _IO_H_INCLUDED
#define _IO_H_INCLUDED
 
#include <stdint.h>
 
static inline void outb(uint16_t port, uint8_t data) {
    asm volatile("outb %0, %1"::"a"(data), "Nd"(port));
}
 
static inline void outw(uint16_t port, uint16_t data) {
    asm volatile("outw %0, %1"::"a"(data), "Nd"(port));
}
 
static inline void outl(uint16_t port, uint32_t data) {
    asm volatile("outl %0, %1"::"a"(data), "Nd"(port));
}
 
static inline uint8_t inb(uint16_t port) {
    uint8_t ret;
    asm volatile("inb %1, %0":"=a"(ret):"Nd"(port));
    return ret;
}
 
static inline uint16_t inw(uint16_t port) {
    uint16_t ret;
    asm volatile("inw %1, %0":"=a"(ret):"Nd"(port));
    return ret;
}
 
static inline uint32_t inl(uint16_t port) {
    uint32_t ret;
    asm volatile("inl %1, %0":"=a"(ret):"Nd"(port));
    return ret;
}
 
#endif