isb

Instruction Synchronization Barrier

ISB {<option>}

Flushes the pipeline and prefetches.

Details

The Instruction Synchronization Barrier instruction flushes the pipeline and prefetches.

Pseudocode Operation

// Memory/instruction barrier

Example

ISB

Encoding

Binary Layout
11010101
000
00011
0011
CRm
1101111
 
Format System
Opcode 0xD50330DF
Extension Base

Operands

  • option
    Option (usually 15)