These words do AArch64-specific things.
All of these words are of the form
@ variety has a signature of
( -- u ), the
! variety has a signature of
( u -- ). They correspond to system registers.
|Word Base Name||Register|
( -- addr )
Pushes the address of the kernel-allocated exception vector table to the stack. This is allocated in the kernel so it is guaranteed to have proper alignment, since it needs a rather large one. (In the future, this might change, and it may instead be allocated inside a frame allocated by the standard frame allocator.)