RET

Return from subroutine branches unconditionally to an address in a register, with a hint that this is a subroutine return.

313029282726252423222120191817161514131211109876543210
1101011001011111000000Rn00000
Zopop2AMRm

RET {<Xn>}

integer n = UInt(Rn);

Assembler Symbols

<Xn>

Is the 64-bit name of the general-purpose register holding the address to be branched to, encoded in the "Rn" field. Defaults to X30 if absent.

Operation

bits(64) target = X[n, 64]; if IsFeatureImplemented(FEAT_GCS) && GCSPCREnabled(PSTATE.EL) then target = LoadCheckGCSRecord(target, GCSInstType_PRET); SetCurrentGCSPointer(GetCurrentGCSPointer() + 8); // Value in BTypeNext will be used to set PSTATE.BTYPE BTypeNext = '00'; boolean branch_conditional = FALSE; BranchTo(target, BranchType_RET, branch_conditional);


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

Copyright © 2010-2024 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.