memdump/io.h

   1 #ifndef IO_H
   2 #define IO_H
   3
   4 static inline void outb(unsigned char v, unsigned short p)
   5 {
   6   asm volatile("outb %1,%0" : : "d" (p), "a" (v));
   7 }
   8
   9 static inline unsigned char inb(unsigned short p)
  10 {
  11   unsigned char v;
  12   asm volatile("inb %1,%0" : "=a" (v) : "d" (p));
  13   return v;
  14 }
  15
  16 static inline void outw(unsigned short v, unsigned short p)
  17 {
  18   asm volatile("outw %1,%0" : : "d" (p), "a" (v));
  19 }
  20
  21 static inline unsigned short inw(unsigned short p)
  22 {
  23   unsigned short v;
  24   asm volatile("inw %1,%0" : "=a" (v) : "d" (p));
  25   return v;
  26 }
  27
  28 static inline void outl(unsigned int v, unsigned short p)
  29 {
  30   asm volatile("outl %1,%0" : : "d" (p), "a" (v));
  31 }
  32
  33 static inline unsigned int inl(unsigned short p)
  34 {
  35   unsigned int v;
  36   asm volatile("inl %1,%0" : "=a" (v) : "d" (p));
  37   return v;
  38 }
  39
  40 #endif