GCSPOPX -- A64

GCSPOPX

Guarded Control Stack Pop exception return record loads an exception return record from the location indicated by the current Guarded control stack pointer register, checks that the record is an exception return record, and increments the pointer by the size of a Guarded control stack exception return record.

This is an alias of SYS. This means:

The encodings in this description are named to match the encodings of SYS.
The description of SYS gives the operational pseudocode, any constrained unpredictable behavior, and any operational information for this instruction.

System
(FEAT_GCS)

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	1	0	0	0	0	1	1	1	0	1	1	1	1	1	0	Rt
										L			op1			CRn				CRm				op2

GCSPOPX
is equivalent to

SYS #0, C7, C7, #6{, <Xt>}

and is always the preferred disassembly.

Operation

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

Internal version only: aarchmrs v2024-03_relA, pseudocode v2024-03_rel, sve v2024-03_rel ; Build timestamp: 2024-03-26T09:45

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	1	0	0	0	0	1	1	1	0	1	1	1	1	1	0	Rt
										L			op1			CRn				CRm				op2

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	1	0	0	0	0	1	1	1	0	1	1	1	1	1	0	Rt
										L			op1			CRn				CRm				op2

GCSPOPX

System(FEAT_GCS)

GCSPOPX is equivalent to SYS #0, C7, C7, #6{, <Xt>} and is always the preferred disassembly.

Operation

System
(FEAT_GCS)

GCSPOPX
is equivalent to

SYS #0, C7, C7, #6{, <Xt>}

and is always the preferred disassembly.

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	1	0	0	0	0	1	1	1	0	1	1	1	1	1	0	Rt
										L			op1			CRn				CRm				op2