clrex

Clear Exclusive (System)

CLREX {#<imm>}

Clears the local monitor state (AArch64 variant).

Pseudocode Operation

local_monitor_state ← CLEAR

Example

CLREX

Encoding

Binary Layout

11010101000000110011

31:12

CRm

11:8

010

7:5

11111

4:0

 

Format System

Opcode 0xD503305F

Extension Base (Atomic)

Operands

• imm
  Optional

Related

Other forms of clrex

• clrex Clear Exclusive (Thumb)
• clrex Clear Exclusive (A32)

More in Base (Atomic)

Reference

View in Arm A64 ISA Reference ↗ Arm A64 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0xD503305F	CLREX {#<imm>}		A64		11010101000000110011 | CRm | 010 | 11111

Description

Clear Exclusive clears the local monitor of the executing PE.

Operation

ClearExclusiveLocal(ProcessorID());