PSSBB

Physical Speculative Store Bypass Barrier is a memory barrier which prevents speculative loads from bypassing earlier stores to the same physical address.

The semantics of the Physical Speculative Store Bypass Barrier are:

This is an alias of DSB. This means:

313029282726252423222120191817161514131211109876543210
11010101000000110011010010011111
CRmopc

PSSBB

is equivalent to

DSB #4

and is always the preferred disassembly.

Operation

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


Internal version only: isa v32.21, AdvSIMD v29.05, pseudocode v2021-06_xml, sve v2021-06_rc2b ; Build timestamp: 2021-06-28T16:41

Copyright © 2010-2021 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.