ARM VERSION 1.2 - page 301

Directives Reference

7.3.6 DCD and DCDU

The

DCD

directive allocates one or more words of memory, aligned on 4-byte boundaries,

and defines the initial runtime contents of the memory.

is a synonym for

DCD

DCDU

is the same, except that the memory alignment is arbitrary.

Syntax

{label} DCD{U} expr{,expr}

where:

expr

is either:

•a numeric expression (see Numeric expressions on page3-20).

•a program-relative expression.

Usage

DCD

inserts up to 3 bytes of padding before the first defined word, if necessary, to achieve

4-byte alignment .

Use

DCDU

if you do not require alignment.