Block a user
abort: rename to exception_vectors
abort: support custom exception vector table address
Reset, Dataabort, IRQ, FIQ etc are also called exceptions in the [ARM doc](https://developer.arm.com/documentation/ddi0406/b/System-Level-Architecture/The-System-Level-Programmers--Model/Exceptions…
abort: support custom exception vector table address
abort.rs should probably be renamed.
how about exception.rs?
abort: support custom exception vector table address