1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- This file documents the GNU Assembler "as". 4 5Copyright (C) 1991-2021 Free Software Foundation, Inc. 6 7Permission is granted to copy, distribute and/or modify this document 8under the terms of the GNU Free Documentation License, Version 1.3 9or any later version published by the Free Software Foundation; 10with no Invariant Sections, with no Front-Cover Texts, and with no 11Back-Cover Texts. A copy of the license is included in the 12section entitled "GNU Free Documentation License". 13 --> 14<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> 15<head> 16<title>Using as: Symbol Attributes</title> 17 18<meta name="description" content="Using as: Symbol Attributes"> 19<meta name="keywords" content="Using as: Symbol Attributes"> 20<meta name="resource-type" content="document"> 21<meta name="distribution" content="global"> 22<meta name="Generator" content="makeinfo"> 23<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 24<link href="index.html#Top" rel="start" title="Top"> 25<link href="AS-Index.html#AS-Index" rel="index" title="AS Index"> 26<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> 27<link href="Symbols.html#Symbols" rel="up" title="Symbols"> 28<link href="Symbol-Value.html#Symbol-Value" rel="next" title="Symbol Value"> 29<link href="Dot.html#Dot" rel="previous" title="Dot"> 30<style type="text/css"> 31<!-- 32a.summary-letter {text-decoration: none} 33blockquote.smallquotation {font-size: smaller} 34div.display {margin-left: 3.2em} 35div.example {margin-left: 3.2em} 36div.indentedblock {margin-left: 3.2em} 37div.lisp {margin-left: 3.2em} 38div.smalldisplay {margin-left: 3.2em} 39div.smallexample {margin-left: 3.2em} 40div.smallindentedblock {margin-left: 3.2em; font-size: smaller} 41div.smalllisp {margin-left: 3.2em} 42kbd {font-style:oblique} 43pre.display {font-family: inherit} 44pre.format {font-family: inherit} 45pre.menu-comment {font-family: serif} 46pre.menu-preformatted {font-family: serif} 47pre.smalldisplay {font-family: inherit; font-size: smaller} 48pre.smallexample {font-size: smaller} 49pre.smallformat {font-family: inherit; font-size: smaller} 50pre.smalllisp {font-size: smaller} 51span.nocodebreak {white-space:nowrap} 52span.nolinebreak {white-space:nowrap} 53span.roman {font-family:serif; font-weight:normal} 54span.sansserif {font-family:sans-serif; font-weight:normal} 55ul.no-bullet {list-style: none} 56--> 57</style> 58 59 60</head> 61 62<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> 63<a name="Symbol-Attributes"></a> 64<div class="header"> 65<p> 66Previous: <a href="Dot.html#Dot" accesskey="p" rel="previous">Dot</a>, Up: <a href="Symbols.html#Symbols" accesskey="u" rel="up">Symbols</a> [<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> 67</div> 68<hr> 69<a name="Symbol-Attributes-1"></a> 70<h3 class="section">5.5 Symbol Attributes</h3> 71 72<a name="index-symbol-attributes"></a> 73<a name="index-attributes_002c-symbol"></a> 74<p>Every symbol has, as well as its name, the attributes “Value” and 75“Type”. Depending on output format, symbols can also have auxiliary 76attributes. 77</p> 78<p>If you use a symbol without defining it, <code>as</code> assumes zero for 79all these attributes, and probably won’t warn you. This makes the 80symbol an externally defined symbol, which is generally what you 81would want. 82</p> 83<table class="menu" border="0" cellspacing="0"> 84<tr><td align="left" valign="top">• <a href="Symbol-Value.html#Symbol-Value" accesskey="1">Symbol Value</a>:</td><td> </td><td align="left" valign="top">Value 85</td></tr> 86<tr><td align="left" valign="top">• <a href="Symbol-Type.html#Symbol-Type" accesskey="2">Symbol Type</a>:</td><td> </td><td align="left" valign="top">Type 87</td></tr> 88<tr><td align="left" valign="top">• <a href="a_002eout-Symbols.html#a_002eout-Symbols" accesskey="3">a.out Symbols</a>:</td><td> </td><td align="left" valign="top">Symbol Attributes: <code>a.out</code> 89</td></tr> 90<tr><td align="left" valign="top">• <a href="COFF-Symbols.html#COFF-Symbols" accesskey="4">COFF Symbols</a>:</td><td> </td><td align="left" valign="top">Symbol Attributes for COFF 91</td></tr> 92<tr><td align="left" valign="top">• <a href="SOM-Symbols.html#SOM-Symbols" accesskey="5">SOM Symbols</a>:</td><td> </td><td align="left" valign="top">Symbol Attributes for SOM 93</td></tr> 94</table> 95 96 97 98 99</body> 100</html> 101