arch/mips/lib/lshrdi3.c

   1 #include "libgcc.h"
   2
   3 long long __lshrdi3(long long u, word_type b)
   4 {
   5         DWunion uu, w;
   6         word_type bm;
   7
   8         if (b == 0)
   9                 return u;
  10
  11         uu.ll = u;
  12         bm = 32 - b;
  13
  14         if (bm <= 0) {
  15                 w.s.high = 0;
  16                 w.s.low = (unsigned int) uu.s.high >> -bm;
  17         } else {
  18                 const unsigned int carries = (unsigned int) uu.s.high << bm;
  19
  20                 w.s.high = (unsigned int) uu.s.high >> b;
  21                 w.s.low = ((unsigned int) uu.s.low >> b) | carries;
  22         }
  23
  24         return w.ll;
  25 }