AT -- A64

<at_op>

Is an AT instruction name, as listed for the AT system instruction group, encoded in op1:CRm:op2:

op1	CRm	op2	<at_op>	Architectural Feature
000	1000	000	S1E1R	-
000	1000	001	S1E1W	-
000	1000	010	S1E0R	-
000	1000	011	S1E0W	-
000	1001	000	S1E1RP	FEAT_PAN2
000	1001	001	S1E1WP	FEAT_PAN2
000	1001	010	S1E1A	FEAT_ATS1A
100	1000	000	S1E2R	-
100	1000	001	S1E2W	-
100	1000	100	S12E1R	-
100	1000	101	S12E1W	-
100	1000	110	S12E0R	-
100	1000	111	S12E0W	-
100	1001	010	S1E2A	FEAT_ATS1A
110	1000	000	S1E3R	-
110	1000	001	S1E3W	-
110	1001	010	S1E3A	FEAT_ATS1A

<Xt>	Is the 64-bit name of the general-purpose source register, encoded in the "Rt" field.

The description of SYS gives the operational pseudocode for this instruction.

Internal version only: aarchmrs v2023-12_rel, pseudocode v2023-12_rel, sve v2023-12_rel ; Build timestamp: 2023-12-15T16:46

AT