GCSPUSHX

Guarded Control Stack push exception return record

This instruction decrements the current GCS pointer register by the size of a Guarded Control Stack exception return record and stores an exception return record to the Guarded Control Stack.

For more information, see GCSPUSHX, Guarded Control Stack Push exception return record.

This is an alias of SYS. This means:

System
(FEAT_GCS)

313029282726252423222120191817161514131211109876543210
110101010000100001110111100Rt
Lop1CRnCRmop2

Encoding

GCSPUSHX

is equivalent to

SYS #0, C7, C7, #4{, <Xt>}

and is always the preferred disassembly.

Operation

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


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

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