HIDDEN.html 3.7 KB

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