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 */