Index

MOVN

Move wide with NOT moves the inverse of an optionally-shifted 16-bit immediate value to a register.

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

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
sf 0 0 1 0 0 1 0 1 hw imm16 Rd
opc

32-bit (sf == 0 && hw == 0x)

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

64-bit (sf == 1)

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

if sf == '0' && hw<1> == '1' then UNDEFINED;

integer d = UInt(Rd);
constant integer datasize = 32 << UInt(sf);
constant integer pos = UInt(hw:'0000');

Assembler Symbols

<Wd>

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

Is the 64-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.

Alias Conditions

Alias Of variant Is preferred when
MOV (inverted wide immediate) 64-bit ! (IsZero(imm16) && hw != '00')
MOV (inverted wide immediate) 32-bit ! (IsZero(imm16) && hw != '00') && ! IsOnes(imm16)

Operation

bits(datasize) result;

result = Zeros(datasize);

result<pos+15:pos> = imm16;
result = NOT(result);
X[d, datasize] = result;

Operational information

If PSTATE.DIT is 1: