[xahrepap]

Mario 64 was byte for byte decompiled to C. It was helped by using the Debug symbols accidentally(?) compiled into the final version of the game.

Otherwise they reference rips of the original game.

[Randomno]

> It was helped by using the Debug symbols accidentally(?) compiled into the final version of the game.

Don't think this was the case, what helped was it being compiled without optimizations.