Expressions.html 5.4 KB

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  61. Next: <a href="Implicit-Linker-Scripts.html#Implicit-Linker-Scripts" accesskey="n" rel="next">Implicit Linker Scripts</a>, Previous: <a href="VERSION.html#VERSION" accesskey="p" rel="prev">VERSION</a>, Up: <a href="Scripts.html#Scripts" accesskey="u" rel="up">Scripts</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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  64. <a name="Expressions-in-Linker-Scripts"></a>
  65. <h3 class="section">3.10 Expressions in Linker Scripts</h3>
  66. <a name="index-expressions"></a>
  67. <a name="index-arithmetic"></a>
  68. <p>The syntax for expressions in the linker script language is identical to
  69. that of C expressions. All expressions are evaluated as integers. All
  70. expressions are evaluated in the same size, which is 32 bits if both the
  71. host and target are 32 bits, and is otherwise 64 bits.
  72. </p>
  73. <p>You can use and set symbol values in expressions.
  74. </p>
  75. <p>The linker defines several special purpose builtin functions for use in
  76. expressions.
  77. </p>
  78. <table class="menu" border="0" cellspacing="0">
  79. <tr><td align="left" valign="top">&bull; <a href="Constants.html#Constants" accesskey="1">Constants</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Constants
  80. </td></tr>
  81. <tr><td align="left" valign="top">&bull; <a href="Symbolic-Constants.html#Symbolic-Constants" accesskey="2">Symbolic Constants</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Symbolic constants
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  83. <tr><td align="left" valign="top">&bull; <a href="Symbols.html#Symbols" accesskey="3">Symbols</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Symbol Names
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  89. <tr><td align="left" valign="top">&bull; <a href="Operators.html#Operators" accesskey="6">Operators</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Operators
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  91. <tr><td align="left" valign="top">&bull; <a href="Evaluation.html#Evaluation" accesskey="7">Evaluation</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Evaluation
  92. </td></tr>
  93. <tr><td align="left" valign="top">&bull; <a href="Expression-Section.html#Expression-Section" accesskey="8">Expression Section</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">The Section of an Expression
  94. </td></tr>
  95. <tr><td align="left" valign="top">&bull; <a href="Builtin-Functions.html#Builtin-Functions" accesskey="9">Builtin Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Builtin Functions
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