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MOVZ

Move wide with zero

This instruction moves an optionally-shifted 16-bit immediate value to a register.

This instruction is used by the alias MOV (wide immediate).

313029282726252423222120191817161514131211109876543210
sf10100101hwimm16Rd
opc

Encoding for the 32-bit variant

Applies when (sf == 0 && hw == 0x)

MOVZ <Wd>, #<imm>{, LSL #<shift>}

Encoding for the 64-bit variant

Applies when (sf == 1)

MOVZ <Xd>, #<imm>{, LSL #<shift>}

Decode for all variants of this encoding

if sf == '0' && hw<1> == '1' then EndOfDecode(Decode_UNDEF); constant integer d = UInt(Rd); constant integer datasize = 32 << UInt(sf); constant bits(16) imm = imm16; constant integer pos = UInt(hw) << 4;

Assembler Symbols

<Wd>

Is the 32-bit name of the general-purpose destination register, encoded in the "Rd" field.

<imm>

Is the 16-bit unsigned immediate, in the range 0 to 65535, encoded in the "imm16" field.

<shift>

For the "32-bit" variant: is the amount by which to shift the immediate left, either 0 (the default) or 16, encoded in the "hw" field as <shift>/16.

For the "64-bit" variant: is the amount by which to shift the immediate left, either 0 (the default), 16, 32 or 48, encoded in the "hw" field as <shift>/16.

<Xd>

Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field.

Alias Conditions

AliasIs preferred when
MOV (wide immediate)!(IsZero(imm16) && hw != '00')

Operation

bits(datasize) result = Zeros(datasize); result<pos+15:pos> = imm; X[d, datasize] = result;