include/asm-i386/div64.h

   1 #ifndef __I386_DIV64
   2 #define __I386_DIV64
   3
   4 #define do_div(n,base) ({ \
   5         unsigned long __upper, __low, __high, __mod; \
   6         asm("":"=a" (__low), "=d" (__high):"A" (n)); \
   7         __upper = __high; \
   8         if (__high) { \
   9                 __upper = __high % (base); \
  10                 __high = __high / (base); \
  11         } \
  12         asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (base), "0" (__low), "1" (__upper)); \
  13         asm("":"=A" (n):"a" (__low),"d" (__high)); \
  14         __mod; \
  15 })
  16
  17 #endif