ARM VERSION 1.2 - Manual (Page 312)

Directives Reference
7-30 Copyright © 2000, 2001 ARM Limited. All rights reserved. ARM DUI 0068B
7.4.4 IF, ELSE, and ENDIF
The IF directive introduces a condition that is used to decide whether to assemble a
sequence of instructions and/or directives. [ is a synonym for IF .
The ELSE directive marks the beginning of a sequence of instructions and/or directives
that you want to be assembled if the preceding condition fails. | is a synonym for ELSE .
The ENDIF directive marks the end of a sequence of instructions and/or directives that
you want to be conditionally assembled. ] is a synonym for ENDIF .
Syntax
IF logical-expression
...
{ELSE
...}
ENDIF
where:
logical-expression is an expression that evaluates to either {TRUE} or {FALSE} .
See Relational operators on page 3-30.
Usage
Use IF with ENDIF , and optionally with ELSE , for sequences of instructions and/or
directives that are only to be assembled or acted on under a specified condition.
IF...ENDIF conditions can be nested (see Nesting directives on page 7-26).