ARM VERSION 1.2 - Manual (Page 339)

Directives Reference
ARM DUI 0068B Copyright © 2000, 2001 ARM Limited. All rights reserved. 7-57
7.7.6 EQU
The EQU directive gives a symbolic name to a numeric constant, a register-relative value
or a program-relative value. * is a synonym for EQU .
Syntax
name EQU expr{, type}
where:
name is the symbolic name to assign to the value.
expr is a register-relative address, a program-relative address, an absolute
address, or a 32-bit integer constant.
type is optional. type can be any one of:
• CODE16
• CODE32
• DATA
You can use type only if expr is an absolute address. If name is exported,
the name entry in the symbol table in the object file will be marked as
CODE16 , CODE32 , or DATA , according to type . This can be used by the linker.
Usage
Use EQU to define constants. This is similar to the use of #define to define a constant in C.
See KEEP on page 7-64 and EXPORT or GLOBAL on page 7-58 for information on
exporting symbols.
Examples
abc EQU 2 ; assigns the value 2 to the symbol abc.
xyz EQU label+8 ; assigns the address (label+8) to the
; symbol xyz.
fiq EQU 0x1C, CODE32 ; assigns the absolute address 0x1C to
; the symbol fiq, and marks it as code