Unless you want to break the CPU, huge portions would have to be bit-to-bit equal, which makes the exercise have easy lower value (is it "free as in freedom" if

Unless you want to break the CPU, huge portions would have to be bit-to-bit equal, which makes the exercise have easy lower value (is it "free as in freedom" if it's effectively a bit wise copy?) while adding legal issues (it would not just be derivative work, it works be mostly an exact copy)