ARM VERSION 1.2 manual Command syntax

Assembler Reference

3.1Command syntax

This section relates only to armasm. The inline assemblers are part of the C and C++ compilers, and have no command syntax of their own.

The armasm command line is case-insensitive, except in filenames, and where specified.

Invoke the ARM assembler using this command:

armasm [-16-32] [-apcs [none[/qualifier[/qualifier[...]]]]]

[-bigend-littleend] [-checkreglist] [-cpu cpu] [-depend dependfile-m-md] [-errors errorfile] [-fpu name] [-g] [-help] [-i dir [,dir]…] [-keep] [-list [listingfile] [options]] [-maxcache n] [-memaccess attributes] [-nocache] [-noesc] [-noregs] [-nowarn] [-o filename] [-predefine "directive"] [-split_ldm] [-unsafe] [-via file] inputfile

where:
-16	instructs the assembler to interpret instructions as Thumb instructions.
	This is equivalent to a CODE16 directive at the head of the source file.
-32	instructs the assembler to interpret instructions as ARM instructions.
	This is the default.

-apcs [none[/qualifier[/qualifier[...]]]]

specifies whether you are using the ARM/Thumb Procedure Call Standard (ATPCS). It can also specify some attributes of code sections. See ADS Developer Guide for more information about the ATPCS.

/none specifies that inputfile does not use ATPCS. ATPCS registers are not set up. Qualifiers are not allowed.

Note

ATPCS qualifiers do not affect the code produced by the assembler. They are an assertion by the programmer that the code in inputfile complies with a particular variant of ATPCS. They cause attributes to be set in the object file produced by the assembler. The linker uses these attributes to check compatibility of files, and to select appropriate library variants.

Values for qualifier are:

/interwork	specifies that the code in inputfile is suitable for
	ARM/Thumb interworking. See ADS Developer
	Guide for information on interworking.
/nointerwork	specifies that the code in inputfile is not suitable
	for ARM/Thumb interworking. This is the default.

3-2 Copyright © 2000, 2001 ARM Limited. All rights reserved. ARM DUI 0068B