Automatic Hardware Behavior Triggered by Interrupts in ARMv8-A AArch64
1. Automatic Hardware Behavior Triggered by Interrupts in ARMv8-A AArch64 1. Save PSTATE to SPSR_ELx; 2. Save return address to ELR_ELx; 3. Set PSTATE.{D,A,I,F} to 14; if it is a synchronous exception or SError, update the ESR_ELx exception characteristics register; 5. Jump to the exception vector table; 6. Select the target exception level's sp_elx