RDFFR (unpredicated)

Read the first-fault register.

Read the first-fault register (FFR) and place in the destination predicate without predication.

313029282726252423222120191817161514131211109876543210
0010010100011001111100000000Pd

SVE

RDFFR <Pd>.B

if !HaveSVE() then UNDEFINED; integer d = UInt(Pd);

Assembler Symbols

<Pd>

Is the name of the destination scalable predicate register, encoded in the "Pd" field.

Operation

CheckSVEEnabled(); bits(PL) ffr = FFR[]; P[d] = ffr;


Internal version only: isa v30.41, AdvSIMD v27.08, pseudocode r8p5_00bet2_rc5, sve v8.5-00bet10_rc5 ; Build timestamp: 2019-03-28T07:14

Copyright © 2010-2019 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.