1 #ifndef _SYS_IO_H
2 #define _SYS_IO_H
3
4 #include <inttypes.h>
5
inb(uint16_t p)6 static inline uint8_t inb(uint16_t p)
7 {
8 uint8_t v;
9 asm volatile ("inb %1,%0":"=a" (v):"Nd"(p));
10 return v;
11 }
12
inw(uint16_t p)13 static inline uint16_t inw(uint16_t p)
14 {
15 uint16_t v;
16 asm volatile ("inw %1,%0":"=a" (v):"Nd"(p));
17 return v;
18 }
19
inl(uint16_t p)20 static inline uint32_t inl(uint16_t p)
21 {
22 uint32_t v;
23 asm volatile ("inl %1,%0":"=a" (v):"Nd"(p));
24 return v;
25 }
26
outb(uint8_t v,uint16_t p)27 static inline void outb(uint8_t v, uint16_t p)
28 {
29 asm volatile ("outb %0,%1"::"a" (v), "Nd"(p));
30 }
31
outw(uint16_t v,uint16_t p)32 static inline void outw(uint16_t v, uint16_t p)
33 {
34 asm volatile ("outw %0,%1"::"a" (v), "Nd"(p));
35 }
36
outl(uint32_t v,uint16_t p)37 static inline void outl(uint32_t v, uint16_t p)
38 {
39 asm volatile ("outl %0,%1"::"a" (v), "Nd"(p));
40 }
41
42 #endif /* _SYS_IO_H */
43