public override bool Apply(KamekFile file)
{
if (Address.IsAbsolute && Target.IsAbsolute && file.Contains(Address))
{
file.WriteUInt32(Address, GenerateInstruction());
return(true);
}
return(false);
}
public override bool Apply(KamekFile file)
{
// Do some reasonableness checks.
// For now, we'll only work on functions ending in a blr
var functionSize = file.QuerySymbolSize(Address);
if (functionSize < 4)
{
throw new InvalidOperationException("Function too small!");
}
var functionEnd = Address + (functionSize - 4);
if (file.ReadUInt32(functionEnd) != 0x4E800020)
{
throw new InvalidOperationException("Function does not end in blr");
}
// Just to be extra sure, are there any other returns in this function?
for (var check = Address; check < functionEnd; check += 4)
{
var insn = file.ReadUInt32(check);
if ((insn & 0xFC00FFFF) == 0x4C000020)
{
throw new InvalidOperationException("Function contains a return partway through");
}
}
EndAddress = functionEnd;
if (EndAddress.IsAbsolute && Target.IsAbsolute && file.Contains(Address))
{
file.WriteUInt32(EndAddress, GenerateInstruction());
return(true);
}
return(false);
}