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M68K_002dDirectives.html 4.9KB

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  62. <a name="g_t680x0-Machine-Directives"></a>
  63. <h4 class="subsection">9.22.5 680x0 Machine Directives</h4>
  64. <a name="index-M680x0-directives"></a>
  65. <a name="index-directives_002c-M680x0"></a>
  66. <p>In order to be compatible with the Sun assembler the 680x0 assembler
  67. understands the following directives.
  68. </p>
  69. <dl compact="compact">
  70. <dd><a name="index-data1-directive_002c-M680x0"></a>
  71. </dd>
  72. <dt><code>.data1</code></dt>
  73. <dd><p>This directive is identical to a <code>.data 1</code> directive.
  74. </p>
  75. <a name="index-data2-directive_002c-M680x0"></a>
  76. </dd>
  77. <dt><code>.data2</code></dt>
  78. <dd><p>This directive is identical to a <code>.data 2</code> directive.
  79. </p>
  80. <a name="index-even-directive_002c-M680x0"></a>
  81. </dd>
  82. <dt><code>.even</code></dt>
  83. <dd><p>This directive is a special case of the <code>.align</code> directive; it
  84. aligns the output to an even byte boundary.
  85. </p>
  86. <a name="index-skip-directive_002c-M680x0"></a>
  87. </dd>
  88. <dt><code>.skip</code></dt>
  89. <dd><p>This directive is identical to a <code>.space</code> directive.
  90. </p>
  91. <a name="index-arch-directive_002c-M680x0"></a>
  92. </dd>
  93. <dt><code>.arch <var>name</var></code></dt>
  94. <dd><p>Select the target architecture and extension features. Valid values
  95. for <var>name</var> are the same as for the <samp>-march</samp> command-line
  96. option. This directive cannot be specified after
  97. any instructions have been assembled. If it is given multiple times,
  98. or in conjunction with the <samp>-march</samp> option, all uses must be for
  99. the same architecture and extension set.
  100. </p>
  101. <a name="index-cpu-directive_002c-M680x0"></a>
  102. </dd>
  103. <dt><code>.cpu <var>name</var></code></dt>
  104. <dd><p>Select the target cpu. Valid values
  105. for <var>name</var> are the same as for the <samp>-mcpu</samp> command-line
  106. option. This directive cannot be specified after
  107. any instructions have been assembled. If it is given multiple times,
  108. or in conjunction with the <samp>-mopt</samp> option, all uses must be for
  109. the same cpu.
  110. </p>
  111. </dd>
  112. </dl>
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