huangmeng
/
Embedded_AI


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126
							<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- This file documents the GNU Assembler "as".

Copyright (C) 1991-2017 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with no Invariant Sections, with no Front-Cover Texts, and with no
Back-Cover Texts.  A copy of the license is included in the
section entitled "GNU Free Documentation License".
 -->
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
<head>
<title>Using as: MSP430 Directives</title>

<meta name="description" content="Using as: MSP430 Directives">
<meta name="keywords" content="Using as: MSP430 Directives">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link href="index.html#Top" rel="start" title="Top">
<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="MSP430_002dDependent.html#MSP430_002dDependent" rel="up" title="MSP430-Dependent">
<link href="MSP430-Opcodes.html#MSP430-Opcodes" rel="next" title="MSP430 Opcodes">
<link href="MSP430-Floating-Point.html#MSP430-Floating-Point" rel="prev" title="MSP430 Floating Point">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.indentedblock {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
div.smalllisp {margin-left: 3.2em}
kbd {font-style:oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nocodebreak {white-space:nowrap}
span.nolinebreak {white-space:nowrap}
span.roman {font-family:serif; font-weight:normal}
span.sansserif {font-family:sans-serif; font-weight:normal}
ul.no-bullet {list-style: none}
-->
</style>


</head>

<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
<a name="MSP430-Directives"></a>
<div class="header">
<p>
Next: <a href="MSP430-Opcodes.html#MSP430-Opcodes" accesskey="n" rel="next">MSP430 Opcodes</a>, Previous: <a href="MSP430-Floating-Point.html#MSP430-Floating-Point" accesskey="p" rel="prev">MSP430 Floating Point</a>, Up: <a href="MSP430_002dDependent.html#MSP430_002dDependent" accesskey="u" rel="up">MSP430-Dependent</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="MSP-430-Machine-Directives"></a>
<h4 class="subsection">9.29.4 MSP 430 Machine Directives</h4>

<a name="index-machine-directives_002c-MSP-430"></a>
<a name="index-MSP-430-machine-directives"></a>
<dl compact="compact">
<dd><a name="index-file-directive_002c-MSP-430"></a>
</dd>
<dt><code>.file</code></dt>
<dd><p>This directive is ignored; it is accepted for compatibility with other
MSP 430 assemblers.
</p>
<blockquote>
<p><em>Warning:</em> in other versions of the <small>GNU</small> assembler, <code>.file</code> is
used for the directive called <code>.app-file</code> in the MSP 430 support.
</p></blockquote>

<a name="index-line-directive_002c-MSP-430"></a>
</dd>
<dt><code>.line</code></dt>
<dd><p>This directive is ignored; it is accepted for compatibility with other
MSP 430 assemblers.
</p>
<a name="index-arch-directive_002c-MSP-430"></a>
</dd>
<dt><code>.arch</code></dt>
<dd><p>Sets the target microcontroller in the same way as the <samp>-mmcu</samp>
command line option.
</p>
<a name="index-cpu-directive_002c-MSP-430"></a>
</dd>
<dt><code>.cpu</code></dt>
<dd><p>Sets the target architecture in the same way as the <samp>-mcpu</samp>
command line option.
</p>
<a name="index-profiler-directive_002c-MSP-430"></a>
</dd>
<dt><code>.profiler</code></dt>
<dd><p>This directive instructs assembler to add new profile entry to the object file.
</p>
<a name="index-refsym-directive_002c-MSP-430"></a>
</dd>
<dt><code>.refsym</code></dt>
<dd><p>This directive instructs assembler to add an undefined reference to
the symbol following the directive.  The maximum symbol name length is
1023 characters.  No relocation is created for this symbol; it will
exist purely for pulling in object files from archives.  Note that
this reloc is not sufficient to prevent garbage collection; use a
KEEP() directive in the linker file to preserve such objects.
</p>
</dd>
</dl>


</body>
</html>