prfm

Prefetch Memory (Immediate)

PRFM <prfop>, [<Xn|SP>, #<pimm>]

Signals the memory system to prefetch data into cache.

Details

The Prefetch Memory instruction signals the memory system to prefetch data into cache.

Pseudocode Operation

// Signals the memory system to prefetch data into cache

Example

PRFM prfop, [x1, #16]

Encoding

Binary Layout
11111001
10
imm12
Rn
Rt
 
Format Load/Store Imm
Opcode 0xF9800000
Extension Base

Operands

  • prfop
    Type (PLDL1KEEP, etc)
  • Xn
    Base Addr
  • pimm
    Positive immediate offset