public override void ApplyToDol(Dol dol)
{
Address.AssertAbsolute();
Target.AssertAbsolute();
switch (Id)
{
case Ids.Rel24:
long delta = Target - Address;
uint insn = dol.ReadUInt32(Address.Value) & 0xFC000003;
insn |= ((uint)delta & 0x3FFFFFC);
dol.WriteUInt32(Address.Value, insn);
break;
case Ids.Addr32:
dol.WriteUInt32(Address.Value, Target.Value);
break;
case Ids.Addr16Lo:
dol.WriteUInt16(Address.Value, (ushort)(Target.Value & 0xFFFF));
break;
case Ids.Addr16Hi:
dol.WriteUInt16(Address.Value, (ushort)(Target.Value >> 16));
break;
case Ids.Addr16Ha:
ushort v = (ushort)(Target.Value >> 16);
if ((Target.Value & 0x8000) == 0x8000)
{
v++;
}
dol.WriteUInt16(Address.Value, v);
break;
default:
throw new NotImplementedException("unrecognised relocation type");
}
}
public override void ApplyToDol(Dol dol)
{
Address.AssertAbsolute();
if (ValueType == Type.Pointer)
{
Value.AssertAbsolute();
}
else
{
Value.AssertValue();
}
if (Original.HasValue)
{
bool patchOK = false;
switch (ValueType)
{
case Type.Value8:
patchOK = (dol.ReadByte(Address.Value) == Original.Value.Value);
break;
case Type.Value16:
patchOK = (dol.ReadUInt16(Address.Value) == Original.Value.Value);
break;
case Type.Value32:
case Type.Pointer:
patchOK = (dol.ReadUInt32(Address.Value) == Original.Value.Value);
break;
}
if (!patchOK)
{
return;
}
}
switch (ValueType)
{
case Type.Value8: dol.WriteByte(Address.Value, (byte)Value.Value); break;
case Type.Value16: dol.WriteUInt16(Address.Value, (ushort)Value.Value); break;
case Type.Value32:
case Type.Pointer: dol.WriteUInt32(Address.Value, Value.Value); break;
}
}
