On: Reverse engineering Call of Duty anti-cheat

[dcrazy]

`ret` also updates the branch predictor’s shadow stack. Failing to balance `call` and `ret` can seriously impact performance.

[dkersten → dcrazy]

If anyone else is looking for more information on this, like I was, this stack is called the “return stack buffer”.

[DSMan195276 → dcrazy]

Right, I didn't want to get into it but definitely using 'ret' "properly" has big performance benefits. My point was just that it won't prevent your code from running, it's not like x86 will trigger an exception if they don't match up.