ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

Instruction Details
A8.6.344 VORN (immediate)
VORN (immediate) is a pseudo-instruction, equivalent to a VORR (immediate) instruction with the immediate
value bitwise inverted. For details see VORR (immediate) on page A8-678.
A8.6.345 VORN (register)
This instruction performs a bitwise OR NOT operation between two registers, and places the result in the
destination register. The operand and result registers can be quadword or doubleword. They must all be the
same size.
Encoding T1 / A1 Advanced SIMD
VORN , ,
VORN , ,
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 1 1 0 1 1 1 1 0 D 1 1 Vn Vd 0 0 0 1 N Q M 1 Vm
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
1 1 1 1 0 0 1 0 0 D 1 1 Vn Vd 0 0 0 1 N Q M 1 Vm
if Q == ‘1’ && (Vd == ‘1’ || Vn == ‘1’ || Vm == ‘1’) then UNDEFINED;
d = UInt(D:Vd); n = UInt(N:Vn); m = UInt(M:Vm); regs = if Q == ‘0’ then 1 else 2;
A8-676 Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. ARM DDI 0406B