PACM -- A64

PACM

Pointer authentication modifier

This instruction is used to set the value of PSTATE.PACM to 1.

If FEAT_PAuth_LR is not implemented, this instruction behaves as a NOP.

System
(FEAT_PAuth_LR)

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	0	1	0	0	0	0	0	0	1	1	0	0	1	0	0	1	0	0	1	1	1	1	1	1	1	1
																				CRm				op2

Encoding

PACM

Decode for this encoding

if !IsFeatureImplemented(FEAT_PAuth_LR) then EndOfDecode(Decode_NOP); end;

Operation

PSTATE.PACM = if IsPACMEnabled() then '1' else '0';

2026-03_rel 2026-03-26 20:48:11

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