Annotation of elwix/tools/oldlzma/SRC/7zip/Compress/Branch/BranchSPARC.c, revision 1.1
1.1 ! misho 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: }
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