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  1. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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  3. <!-- This file documents the GNU Assembler "as".
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  7. or any later version published by the Free Software Foundation;
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  15. <title>Symbol Attributes (Using as)</title>
  16. <meta name="description" content="Symbol Attributes (Using as)">
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  21. <link href="index.html#Top" rel="start" title="Top">
  22. <link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
  23. <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
  24. <link href="Symbols.html#Symbols" rel="up" title="Symbols">
  25. <link href="Symbol-Value.html#Symbol-Value" rel="next" title="Symbol Value">
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  56. <a name="Symbol-Attributes"></a>
  57. <div class="header">
  58. <p>
  59. Previous: <a href="Dot.html#Dot" accesskey="p" rel="prev">Dot</a>, Up: <a href="Symbols.html#Symbols" accesskey="u" rel="up">Symbols</a> &nbsp; [<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>
  60. </div>
  61. <hr>
  62. <a name="Symbol-Attributes-1"></a>
  63. <h3 class="section">5.5 Symbol Attributes</h3>
  64. <a name="index-symbol-attributes"></a>
  65. <a name="index-attributes_002c-symbol"></a>
  66. <p>Every symbol has, as well as its name, the attributes &ldquo;Value&rdquo; and
  67. &ldquo;Type&rdquo;. Depending on output format, symbols can also have auxiliary
  68. attributes.
  69. </p>
  70. <p>If you use a symbol without defining it, <code>as</code> assumes zero for
  71. all these attributes, and probably won&rsquo;t warn you. This makes the
  72. symbol an externally defined symbol, which is generally what you
  73. would want.
  74. </p>
  75. <table class="menu" border="0" cellspacing="0">
  76. <tr><td align="left" valign="top">&bull; <a href="Symbol-Value.html#Symbol-Value" accesskey="1">Symbol Value</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Value
  77. </td></tr>
  78. <tr><td align="left" valign="top">&bull; <a href="Symbol-Type.html#Symbol-Type" accesskey="2">Symbol Type</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Type
  79. </td></tr>
  80. <tr><td align="left" valign="top">&bull; <a href="a_002eout-Symbols.html#a_002eout-Symbols" accesskey="3">a.out Symbols</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Symbol Attributes: <code>a.out</code>
  81. </td></tr>
  82. <tr><td align="left" valign="top">&bull; <a href="COFF-Symbols.html#COFF-Symbols" accesskey="4">COFF Symbols</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Symbol Attributes for COFF
  83. </td></tr>
  84. <tr><td align="left" valign="top">&bull; <a href="SOM-Symbols.html#SOM-Symbols" accesskey="5">SOM Symbols</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Symbol Attributes for SOM
  85. </td></tr>
  86. </table>
  87. </body>
  88. </html>