root/include/asm/io.h

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INCLUDED FROM


   1 #define outb(value,port) \
   2 __asm__ ("outb %%al,%%dx"::"a" (value),"d" (port))
   3 
   4 
   5 #define inb(port) ({ \
   6 unsigned char _v; \
   7 __asm__ volatile ("inb %%dx,%%al":"=a" (_v):"d" (port)); \
   8 _v; \
   9 })
  10 
  11 #define outb_p(value,port) \
  12 __asm__ ("outb %%al,%%dx\n" \
  13                 "\tjmp 1f\n" \
  14                 "1:\tjmp 1f\n" \
  15                 "1:"::"a" (value),"d" (port))
  16 
  17 #define inb_p(port) ({ \
  18 unsigned char _v; \
  19 __asm__ volatile ("inb %%dx,%%al\n" \
  20         "\tjmp 1f\n" \
  21         "1:\tjmp 1f\n" \
  22         "1:":"=a" (_v):"d" (port)); \
  23 _v; \
  24 })

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