RDFFR (unpredicated)

Read the first-fault register.

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

313029282726252423222120191817161514131211109876543210
0010010100011001111100000000Pd
S

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;

Operational information

If PSTATE.DIT is 1:


Internal version only: isa v32.13, AdvSIMD v29.05, pseudocode v2020-12, sve v2020-12 ; Build timestamp: 2020-12-16T16:53

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