<html lang="en"> <head> <title>Desc - Using as</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Using as"> <meta name="generator" content="makeinfo 4.7"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Pseudo-Ops.html#Pseudo-Ops" title="Pseudo Ops"> <link rel="prev" href="Def.html#Def" title="Def"> <link rel="next" href="Dim.html#Dim" title="Dim"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002, 2006, 2007 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 1.1 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''. man end--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family: serif; font-weight: normal; } --></style> </head> <body> <div class="node"> <p> <a name="Desc"></a>Next: <a rel="next" accesskey="n" href="Dim.html#Dim">Dim</a>, Previous: <a rel="previous" accesskey="p" href="Def.html#Def">Def</a>, Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a> <hr><br> </div> <h3 class="section">7.34 <code>.desc </code><var>symbol</var><code>, </code><var>abs-expression</var></h3> <p><a name="index-_0040code_007bdesc_007d-directive-299"></a><a name="index-COFF-symbol-descriptor-300"></a><a name="index-symbol-descriptor_002c-COFF-301"></a>This directive sets the descriptor of the symbol (see <a href="Symbol-Attributes.html#Symbol-Attributes">Symbol Attributes</a>) to the low 16 bits of an absolute expression. <p>The <span class="samp">.desc</span> directive is not available when <span class="command">as</span> is configured for COFF output; it is only for <code>a.out</code> or <code>b.out</code> object format. For the sake of compatibility, <span class="command">as</span> accepts it, but produces no output, when configured for COFF. </body></html>