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

Assembler syntax
QADD {,} ,
where:
See Standard assembler syntax fields on page A8-7.
The destination register.
The first operand register.
The second operand register.
Operation
if ConditionPassed() then
EncodingSpecificOperations();
(R[d], sat) = SignedSatQ(SInt(R[m]) + SInt(R[n]), 32);
if sat then
APSR.Q = ‘1’;
Exceptions
None.
Instruction Details
ARM DDI 0406B Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. A8-251