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Blackfin-Directives.html 4.0KB

3 年之前
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  63. <h4 class="subsection">9.6.3 Directives</h4>
  64. <a name="index-Blackfin-directives"></a>
  65. <a name="index-directives_002c-Blackfin"></a>
  66. <p>The following directives are provided for compatibility with the VDSP assembler.
  67. </p>
  68. <dl compact="compact">
  69. <dt><code>.byte2</code></dt>
  70. <dd><p>Initializes a two byte data object.
  71. </p>
  72. <p>This maps to the <code>.short</code> directive.
  73. </p></dd>
  74. <dt><code>.byte4</code></dt>
  75. <dd><p>Initializes a four byte data object.
  76. </p>
  77. <p>This maps to the <code>.int</code> directive.
  78. </p></dd>
  79. <dt><code>.db</code></dt>
  80. <dd><p>Initializes a single byte data object.
  81. </p>
  82. <p>This directive is a synonym for <code>.byte</code>.
  83. </p></dd>
  84. <dt><code>.dw</code></dt>
  85. <dd><p>Initializes a two byte data object.
  86. </p>
  87. <p>This directive is a synonym for <code>.byte2</code>.
  88. </p></dd>
  89. <dt><code>.dd</code></dt>
  90. <dd><p>Initializes a four byte data object.
  91. </p>
  92. <p>This directive is a synonym for <code>.byte4</code>.
  93. </p></dd>
  94. <dt><code>.var</code></dt>
  95. <dd><p>Define and initialize a 32 bit data object.
  96. </p></dd>
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