(old) htmldiff from-(new)

DVP

Data Value Prediction Restriction by Context prevents data value predictions, that predict execution addresses based on information gathered from earlier execution within aan particular execution context. Data value predictions determined by the actions of code in the target execution context, orfrom contextsallowing appearinglater in program order before the instruction cannot be used to exploitatively control speculative execution occurringwithin afterthat thecontext instructionto isbe completeobservable andthrough synchronized.side-channels.

For more information, see DVP RCTX, Data Value Prediction Restriction by Context.

This is an alias of SYS. This means:

System
(FEAT_SPECRES)

313029282726252423222120191817161514131211109876543210
110101010000101101110011101Rt
Lop1CRnCRmop2

DVP RCTX, <Xt>

is equivalent to

SYS #3, C7, C3, #5, <Xt>

and is always the preferred disassembly.

Assembler Symbols

<Xt>

Is the 64-bit name of the general-purpose source register, encoded in the "Rt" field.

Operation

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


Internal version only: isa v32.15v32.13, AdvSIMD v29.05, pseudocode v2021-03v2020-12, sve v2021-03_rc2v2020-12 ; Build timestamp: 2021-03-30T212021-03-05T20:2214

Copyright © 2010-20212010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

(old) htmldiff from-(new)