// Unpacks the relocation entries in a LzExe 0.91 binary
private ImageMap Relocate91(byte [] abUncompressed, ushort segReloc, LoadedImage pgmImgNew, RelocationDictionary relocations)
{
const int CompressedRelocationTableAddress = 0x0158;
int ifile = lzHdrOffset + CompressedRelocationTableAddress;
int rel_off=0;
for (;;)
{
ushort span = abUncompressed[ifile++];
if (span == 0)
{
span = abUncompressed[ifile++];
span |= (ushort) (abUncompressed[ifile++] << 8);
if (span == 0)
{
rel_off += 0x0FFF0;
continue;
}
else if (span == 1)
{
break;
}
}
rel_off += span;
ushort seg = (ushort) (pgmImgNew.ReadLeUInt16((uint)rel_off) + segReloc);
pgmImgNew.WriteLeUInt16((uint)rel_off, seg);
relocations.AddSegmentReference((uint)rel_off, seg);
imageMap.AddSegment(Address.SegPtr(seg, 0), seg.ToString("X4"), AccessMode.ReadWriteExecute);
}
return imageMap;
}
private void RelocateSegmentReferences(LoadedImage image)
{
foreach (var seg in segments)
{
foreach (var reloc in seg.Relocations)
{
image.WriteLeUInt16((uint)((reloc.Segment.Selector - addrBase.Selector) * 16u + reloc.Offset), seg.Selector);
}
}
}