DRPS

Debug restore PE state

This instruction restores PSTATE from the SPSR.

The SPSR is checked for the current Exception level for an illegal return event. See Illegal exception returns from AArch64 state.

This instruction is UNDEFINED in Non-debug state.

This instruction is UNDEFINED at EL0.

For more information on the operation of DRPS, see DRPS.

Encoding: System

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
1	1	0	1	0	1	1	0	1	0	1	1	1	1	1	1	0	0	0	0	0	0	1	1	1	1	1	0	0	0	0	0
							opc				op2					op3						Rn					op4

DRPS

Decoding algorithm

// Empty.

Operation

if !Halted() || PSTATE.EL == EL0 then UNDEFINED;
DRPSInstruction();

Explanations