<html lang="en"> <head> <title>i386-Directives - 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="i386_002dDependent.html#i386_002dDependent" title="i386-Dependent"> <link rel="prev" href="i386_002dOptions.html#i386_002dOptions" title="i386-Options"> <link rel="next" href="i386_002dSyntax.html#i386_002dSyntax" title="i386-Syntax"> <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="i386-Directives"></a> <a name="i386_002dDirectives"></a> <p> Next: <a rel="next" accesskey="n" href="i386_002dSyntax.html#i386_002dSyntax">i386-Syntax</a>, Previous: <a rel="previous" accesskey="p" href="i386_002dOptions.html#i386_002dOptions">i386-Options</a>, Up: <a rel="up" accesskey="u" href="i386_002dDependent.html#i386_002dDependent">i386-Dependent</a> <hr> </div> <h4 class="subsection">9.15.2 x86 specific Directives</h4> <p><a name="index-machine-directives_002c-x86-1025"></a><a name="index-x86-machine-directives-1026"></a> <a name="index-g_t_0040code_007blcomm_007d-directive_002c-COFF-1027"></a> <dl><dt><code>.lcomm </code><var>symbol</var><code> , </code><var>length</var><code>[, </code><var>alignment</var><code>]</code><dd>Reserve <var>length</var> (an absolute expression) bytes for a local common denoted by <var>symbol</var>. The section and value of <var>symbol</var> are those of the new local common. The addresses are allocated in the bss section, so that at run-time the bytes start off zeroed. Since <var>symbol</var> is not declared global, it is normally not visible to <code>ld</code>. The optional third parameter, <var>alignment</var>, specifies the desired alignment of the symbol in the bss section. <p>This directive is only available for COFF based x86 targets. <!-- FIXME: Document other x86 specific directives ? Eg: .code16gcc, --> <!-- .largecomm --> </dl> </body></html>