gcc/testsuite/gcc.target/powerpc/rlwinm.h

   1 typedef unsigned int u32;
   2
   3 static inline u32 rot(u32 x, u32 n, u32 mb, u32 me)
   4 {
   5         u32 y = x;
   6
   7         if (n)
   8                 x = 0
   9 #ifdef SL
  10                 | (x << n)
  11 #endif
  12 #ifdef SR
  13                 | (x >> (32 - n))
  14 #endif
  15                 ;
  16
  17         u32 s = -1;
  18         if (n)
  19                 s = 0
  20 #ifdef SL
  21                 | (s << n)
  22 #endif
  23 #ifdef SR
  24                 | (s >> (32 - n))
  25 #endif
  26                 ;
  27
  28         u32 mask = 0;
  29         mask += 1U << (31 - mb);
  30         mask += 1U << (31 - mb);
  31         mask -= 1U << (31 - me);
  32         mask -= (mb > me);
  33
  34         if (mask & ~s)
  35                 return 12345*y;
  36
  37         return x & mask;
  38 }
  39
  40 #define X3(N,B,E) \
  41 u32 f_##N##_##B##_##E(u32 x) { return rot(x,N,B,E); } \
  42
  43 #define X2(N,B) \
  44 X3(N,B,0) \
  45 X3(N,B,1) \
  46 X3(N,B,2) \
  47 X3(N,B,7) \
  48 X3(N,B,8) \
  49 X3(N,B,9) \
  50 X3(N,B,15) \
  51 X3(N,B,16) \
  52 X3(N,B,17) \
  53 X3(N,B,23) \
  54 X3(N,B,24) \
  55 X3(N,B,25) \
  56 X3(N,B,29) \
  57 X3(N,B,30) \
  58 X3(N,B,31)
  59 #define X1(N) \
  60 X2(N,0) \
  61 X2(N,1) \
  62 X2(N,2) \
  63 X2(N,7) \
  64 X2(N,8) \
  65 X2(N,9) \
  66 X2(N,15) \
  67 X2(N,16) \
  68 X2(N,17) \
  69 X2(N,23) \
  70 X2(N,24) \
  71 X2(N,25) \
  72 X2(N,29) \
  73 X2(N,30) \
  74 X2(N,31)
  75 #define X() \
  76 X1(0) \
  77 X1(1) \
  78 X1(2) \
  79 X1(7) \
  80 X1(8) \
  81 X1(9) \
  82 X1(15) \
  83 X1(16) \
  84 X1(17) \
  85 X1(23) \
  86 X1(24) \
  87 X1(25) \
  88 X1(29) \
  89 X1(30) \
  90 X1(31)
  91
  92 X()