ldxr

Load Exclusive Register

LDXR <Wt>, [<Xn|SP>]

Loads a word and marks physical address as exclusive access.

Details

The Load Exclusive Register instruction loads a word and marks physical address as exclusive access.

Pseudocode Operation

Wt ← Memory[address]

Example

LDXR w3, [x1]

Encoding

Binary Layout
10001000
01011111
011111
Rn
Rt
 
Format Load/Store Excl
Opcode 0x885F7C00
Extension Base (Atomic)

Operands

  • Wt
    Transfer 32-bit integer register (load/store)
  • Xn
    First source / base 64-bit integer register