strexb

Store Register Exclusive Byte (Thumb)

STREXB <Rd>, <Rt>, [<Rn>]

Stores byte exclusively (Thumb).

Details

The Store Register Exclusive Byte instruction stores byte exclusively (Thumb).

Pseudocode Operation

Memory[address] ← Rt

Example

STREXB r0, r3, [r1]

Encoding

Binary Layout
111010001100
Rn
Rt
1111
0100
Rd
 
Format Thumb Store Excl
Opcode 0xE8C00F40
Extension A32 (Atomic)

Operands

  • Rd
    Status
  • Rt
    Transfer general-purpose register (load/store)
  • Rn
    First source / base general-purpose register