movz

Move Zero

MOVZ <Wd>, #<imm16> {, lsl #<shift>}

Moves 16-bit immediate to register, zeroing other bits.

Pseudocode Operation

shift_amount ← hw × 16
Wd ← imm16 ≪ shift_amount

Example

MOVZ w0, #16

Encoding

Binary Layout

0

31

10

30:29

100101

28:23

hw

22:21

imm16

20:5

Rd

4:0

 

Format Data Processing

Opcode 0x52800000

Extension Base

Operands

• Wd
  Destination 32-bit integer register
• imm16
  Imm
• shift
  Shift amount

Related

More in Base

Reference

View in Arm A64 ISA Reference ↗ Arm A64 ISA

Instruction Forms

Encoding	Instruction		ISA		Bit pattern
0x52800000	MOVZ <Wd>, #<imm>{, LSL #<shift>}		A64		0 | 10 | 100101 | hw | imm16 | Rd
0xD2800000	MOVZ <Xd>, #<imm>{, LSL #<shift>}		A64		1 | 10 | 100101 | hw | imm16 | Rd

Description

Move wide with zero moves an optionally-shifted 16-bit immediate value to a register.

Operation

bits(datasize) result;

result = Zeros(datasize);

result<pos+15:pos> = imm16;
X[d, datasize] = result;