<html lang="en"> <head> <title>Size - 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="Single.html#Single" title="Single"> <link rel="next" href="Skip.html#Skip" title="Skip"> <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="Size"></a> <p> Next: <a rel="next" accesskey="n" href="Skip.html#Skip">Skip</a>, Previous: <a rel="previous" accesskey="p" href="Single.html#Single">Single</a>, Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a> <hr> </div> <h3 class="section">7.82 <code>.size</code></h3> <p>This directive is used to set the size associated with a symbol. <!-- only print the extra heading if both COFF and ELF are set --> <h4 class="subheading">COFF Version</h4> <p><a name="index-g_t_0040code_007bsize_007d-directive-_0028COFF-version_0029-463"></a>For COFF targets, the <code>.size</code> directive is only permitted inside <code>.def</code>/<code>.endef</code> pairs. It is used like this: <pre class="smallexample"> .size <var>expression</var> </pre> <!-- only print the extra heading if both COFF and ELF are set --> <h4 class="subheading">ELF Version</h4> <p><a name="index-g_t_0040code_007bsize_007d-directive-_0028ELF-version_0029-464"></a>For ELF targets, the <code>.size</code> directive is used like this: <pre class="smallexample"> .size <var>name</var> , <var>expression</var> </pre> <p>This directive sets the size associated with a symbol <var>name</var>. The size in bytes is computed from <var>expression</var> which can make use of label arithmetic. This directive is typically used to set the size of function symbols. </body></html>