GCSSS2 -- A64

Guarded Control Stack Switch Stack 2 validates that the most recent entry of the Guarded control stack being switched to contains an In-progress cap entry, stores a Valid cap entry to the Guarded control stack that is being switched from, and sets Xt to the Guarded control stack pointer that is being switched from.

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

GCSSS2 <Xt>
is equivalent to

SYSL <Xt>, #3, C7, C7, #3

and is always the preferred disassembly.

Assembler Symbols

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

Operation

The description of SYSL 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	1	0	1	0	1	1	0	1	1	1	0	1	1	1	0	1	1	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	1	0	1	0	1	1	0	1	1	1	0	1	1	1	0	1	1	Rt
										L			op1			CRn				CRm				op2

GCSSS2

System(FEAT_GCS)

GCSSS2 <Xt> is equivalent to SYSL <Xt>, #3, C7, C7, #3 and is always the preferred disassembly.

Assembler Symbols

Operation

System
(FEAT_GCS)

GCSSS2 <Xt>
is equivalent to

SYSL <Xt>, #3, C7, C7, #3

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