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M32R_002fD-Variable-Attributes.html 4.5KB

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  68. <h4 class="subsection">6.34.7 M32R/D Variable Attributes</h4>
  69. <p>One attribute is currently defined for the M32R/D.
  70. </p>
  71. <dl compact="compact">
  72. <dt><code>model (<var>model-name</var>)</code></dt>
  73. <dd><a name="index-model_002dname-variable-attribute_002c-M32R_002fD"></a>
  74. <a name="index-variable-addressability-on-the-M32R_002fD"></a>
  75. <p>Use this attribute on the M32R/D to set the addressability of an object.
  76. The identifier <var>model-name</var> is one of <code>small</code>, <code>medium</code>,
  77. or <code>large</code>, representing each of the code models.
  78. </p>
  79. <p>Small model objects live in the lower 16MB of memory (so that their
  80. addresses can be loaded with the <code>ld24</code> instruction).
  81. </p>
  82. <p>Medium and large model objects may live anywhere in the 32-bit address space
  83. (the compiler generates <code>seth/add3</code> instructions to load their
  84. addresses).
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