The binary system interfaces designed at Bell Labs were what helped our
friends like Linus Torvalds become successful. It's why Torvalds always
respected syscall abi and made every effort to not break the userspace.
Sadly OpenBSD developer Theo de Raadt thinks respecting Bell interfaces
is a risk for security and conjured up the Return Oriented Programming
bogeyman to justify his policies, per https://lwn.net/Articles/806776/
See libc/nexgen32e/gc.S where we use ROP concepts for garbage collection
in C due to our belief that powerful programming techniques can be good.
See https://opensource.googleblog.com/2017/03/operation-rosehub.html for
an example of something similar to rop but potentially more of a concern
Justine Tunney