<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 4.13"> <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) 1991-2015 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''. --> <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; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="Desc"></a> <p> 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> </div> <h3 class="section">7.14 <code>.desc </code><var>symbol</var><code>, </code><var>abs-expression</var></h3> <p><a name="index-g_t_0040code_007bdesc_007d-directive-311"></a><a name="index-COFF-symbol-descriptor-312"></a><a name="index-symbol-descriptor_002c-COFF-313"></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 ‘<samp><span class="samp">.desc</span></samp>’ directive is not available when <samp><span class="command">as</span></samp> 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, <samp><span class="command">as</span></samp> accepts it, but produces no output, when configured for COFF. </body></html>