release/src-rt-6.x/linux/linux-2.6/scripts/squashfs/lzma/C/7zip/Compress/Branch/BranchSPARC.c

   1 // BranchSPARC.c
   2
   3 #include "BranchSPARC.h"
   4
   5 UInt32 SPARC_Convert(Byte *data, UInt32 size, UInt32 nowPos, int encoding)
   6 {
   7   UInt32 i;
   8   for (i = 0; i + 4 <= size; i += 4)
   9   {
  10     if (data[i] == 0x40 && (data[i + 1] & 0xC0) == 0x00 ||
  11         data[i] == 0x7F && (data[i + 1] & 0xC0) == 0xC0)
  12     {
  13       UInt32 src =
  14         ((UInt32)data[i + 0] << 24) |
  15         ((UInt32)data[i + 1] << 16) |
  16         ((UInt32)data[i + 2] << 8) |
  17         ((UInt32)data[i + 3]);
  18
  19       src <<= 2;
  20       UInt32 dest;
  21       if (encoding)
  22         dest = nowPos + i + src;
  23       else
  24         dest = src - (nowPos + i);
  25       dest >>= 2;
  26
  27       dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF) | (dest & 0x3FFFFF) | 0x40000000;
  28
  29       data[i + 0] = (Byte)(dest >> 24);
  30       data[i + 1] = (Byte)(dest >> 16);
  31       data[i + 2] = (Byte)(dest >> 8);
  32       data[i + 3] = (Byte)dest;
  33     }
  34   }
  35   return i;
  36 }