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

Assembler syntax
CMP , #
where:
See Standard assembler syntax fields on page A8-7.
Instruction Details
The first operand register. SP can be used in Thumb (encoding T2) as well as in ARM.
The immediate value to be compared with the value obtained from . The range of values
is 0-255 for encoding T1. See Modified immediate constants in Thumb instructions on
page A6-17 or Modified immediate constants in ARM instructions on page A5-9 for the
range of values for encoding T2 and A1.
Operation
if ConditionPassed() then
EncodingSpecificOperations();
(result, carry, overflow) = AddWithCarry(R[n], NOT(imm32), ‘1’);
APSR.N = result;
APSR.Z = IsZeroBit(result);
APSR.C = carry;
APSR.V = overflow;
Exceptions
None.
ARM DDI 0406B Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. A8-81