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3 jaren geleden
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  59. <p>
  60. Next: <a href="PROVIDE.html#PROVIDE" accesskey="n" rel="next">PROVIDE</a>, Previous: <a href="Simple-Assignments.html#Simple-Assignments" accesskey="p" rel="prev">Simple Assignments</a>, Up: <a href="Assignments.html#Assignments" accesskey="u" rel="up">Assignments</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="HIDDEN-1"></a>
  64. <h4 class="subsection">3.5.2 HIDDEN</h4>
  65. <a name="index-HIDDEN"></a>
  66. <p>For ELF targeted ports, define a symbol that will be hidden and won&rsquo;t be
  67. exported. The syntax is <code>HIDDEN(<var>symbol</var> = <var>expression</var>)</code>.
  68. </p>
  69. <p>Here is the example from <a href="Simple-Assignments.html#Simple-Assignments">Simple Assignments</a>, rewritten to use
  70. <code>HIDDEN</code>:
  71. </p>
  72. <div class="smallexample">
  73. <pre class="smallexample">HIDDEN(floating_point = 0);
  74. SECTIONS
  75. {
  76. .text :
  77. {
  78. *(.text)
  79. HIDDEN(_etext = .);
  80. }
  81. HIDDEN(_bdata = (. + 3) &amp; ~ 3);
  82. .data : { *(.data) }
  83. }
  84. </pre></div>
  85. <p>In this case none of the three symbols will be visible outside this module.
  86. </p>
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