private Address ReadSegPtr(MemoryArea mem, uint offset)
{
var off = mem.ReadLeUInt16(offset);
var seg = mem.ReadLeUInt16(offset + 2);
return Address.SegPtr(seg, off);
}
public ushort PeekLeUInt16(uint offset)
{
return(MemoryArea.ReadLeUInt16(bytes, offset + (uint)off));
}
public short PeekLeInt16(int offset)
{
return((short)MemoryArea.ReadLeUInt16(bytes, offset + (uint)off));
}
// Unpacks the relocation entries in a LzExe 0.91 binary
private SegmentMap Relocate91(byte [] abUncompressed, ushort segReloc, MemoryArea pgmImgNew)
{
const int CompressedRelocationTableAddress = 0x0158;
var relocations = pgmImgNew.Relocations;
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);
segmentMap.AddSegment(
new ImageSegment(
seg.ToString("X4"),
Address.SegPtr(seg, 0),
this.imgLoaded,
AccessMode.ReadWriteExecute));
}
return segmentMap;
}
