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       UInt32 dest;

    19       

    20       src <<= 2;

    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 }