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3 лет назад
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  16. <title>Symbolic Constants (LD)</title>
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  57. <a name="Symbolic-Constants"></a>
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  60. Next: <a href="Symbols.html#Symbols" accesskey="n" rel="next">Symbols</a>, Previous: <a href="Constants.html#Constants" accesskey="p" rel="prev">Constants</a>, Up: <a href="Expressions.html#Expressions" accesskey="u" rel="up">Expressions</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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  63. <a name="Symbolic-Constants-1"></a>
  64. <h4 class="subsection">3.10.2 Symbolic Constants</h4>
  65. <a name="index-symbolic-constants"></a>
  66. <a name="index-CONSTANT"></a>
  67. <p>It is possible to refer to target-specific constants via the use of
  68. the <code>CONSTANT(<var>name</var>)</code> operator, where <var>name</var> is one of:
  69. </p>
  70. <dl compact="compact">
  71. <dt><code>MAXPAGESIZE</code></dt>
  72. <dd><a name="index-MAXPAGESIZE"></a>
  73. <p>The target&rsquo;s maximum page size.
  74. </p>
  75. </dd>
  76. <dt><code>COMMONPAGESIZE</code></dt>
  77. <dd><a name="index-COMMONPAGESIZE"></a>
  78. <p>The target&rsquo;s default page size.
  79. </p></dd>
  80. </dl>
  81. <p>So for example:
  82. </p>
  83. <div class="smallexample">
  84. <pre class="smallexample"> .text ALIGN (CONSTANT (MAXPAGESIZE)) : { *(.text) }
  85. </pre></div>
  86. <p>will create a text section aligned to the largest page boundary
  87. supported by the target.
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