Adding AArch64 CurrentEL register
CurrentEL is used to determine the current "exception level" in the CPU.
It has four possible results:
0b00 - EL0 - Application
0b01 - EL1 - Rich OS
0b10 - EL2 - Hypervisor
0b11 - EL3 - Firmware
https://developer.arm.com/documentation/ddi0595/2020-12/AArch64-Registers/CurrentEL--Current-Exception-Level https://developer.arm.com/documentation/102412/0100/Privilege-and-Exception-levels
Edited by Robert Roland