Viewing profile — rjmccall

This is an interesting article, but as a Swift language designer, I'd really appreciate it if people didn't randomly throw out wildly inaccurate information like "Basically everyth…

Swift frameworks that use ObjC system libraries will still use objc_msgSend.

> Does iOS currently use different signature sizes? Code and data live in the same address space, and the address-space needs of the system are the main input to the basic signatur…

Right. Pointer authentication depends on it not being easy to forge a signature given the desired pointer. Given that there's a secret key included in the signature, the requiremen…

They can be compatible. Memory tagging does use the TBI bits. Pointer authentication uses an arbitrary number of bits, and the kernel configures the width and whether the TBI bits …