public void relocate32(int hunk_no, byte[] data, uint offset, uint hunk_addr)
{
var delta = MemoryArea.ReadBeUInt32(data, offset);
var addr = hunk_addr + delta;
MemoryArea.WriteBeUInt32(data, offset, addr);
Debug.WriteIf(Trace.TraceVerbose, string.Format("#{0,2} + {1:X8}: {2:X6} (delta) + {3:X6} (hunk_addr) -> {4:X6}", hunk_no, offset, delta, hunk_addr, addr));
}
private PowerPcInstruction DisassembleX(uint op, uint rs, uint ra, uint rb, uint xo, uint rc)
{
uint w =
(op << 26) |
(rs << 21) |
(ra << 16) |
(rb << 11) |
(xo << 1) |
rc;
MemoryArea img = new MemoryArea(Address.Ptr32(0x00100000), new byte[4]);
img.WriteBeUInt32(0, w);
return(Disassemble(img));
}
bool PerformRelocations(MemoryArea mem, ImageReader rdr)
{
uint fixup;
if (!rdr.TryReadBeUInt32(out fixup))
{
return(false);
}
if (fixup == 0)
{
return(true); // no relocations to do.
}
uint offset = fixup;
for (;;)
{
var dst = mem.BaseAddress + offset;
uint l = mem.ReadBeUInt32(offset);
l += mem.BaseAddress.ToUInt32();
mem.WriteBeUInt32(offset, l);
mem.Relocations.AddPointerReference(mem.BaseAddress.ToLinear() + offset, l);
byte b;
for (;;)
{
if (!rdr.TryReadByte(out b))
{
return(false);
}
if (b == 0)
{
return(true);
}
else if (b == 1)
{
offset += 254;
}
else
{
offset += b;
break;
}
}
}
}
