com32/include/sys/io.h

   1 #ifndef _SYS_IO_H
   2 #define _SYS_IO_H
   3
   4 #include <inttypes.h>
   5
   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
  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
  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
  27 static inline void outb(uint8_t v, uint16_t p)
  28 {
  29     asm volatile ("outb %0,%1"::"a" (v), "Nd"(p));
  30 }
  31
  32 static inline void outw(uint16_t v, uint16_t p)
  33 {
  34     asm volatile ("outw %0,%1"::"a" (v), "Nd"(p));
  35 }
  36
  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 */