M68K_002dDirectives.html 5.0 KB

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  63. <a name="g_t680x0-Machine-Directives"></a>
  64. <h4 class="subsection">9.23.5 680x0 Machine Directives</h4>
  65. <a name="index-M680x0-directives"></a>
  66. <a name="index-directives_002c-M680x0"></a>
  67. <p>In order to be compatible with the Sun assembler the 680x0 assembler
  68. understands the following directives.
  69. </p>
  70. <dl compact="compact">
  71. <dd><a name="index-data1-directive_002c-M680x0"></a>
  72. </dd>
  73. <dt><code>.data1</code></dt>
  74. <dd><p>This directive is identical to a <code>.data 1</code> directive.
  75. </p>
  76. <a name="index-data2-directive_002c-M680x0"></a>
  77. </dd>
  78. <dt><code>.data2</code></dt>
  79. <dd><p>This directive is identical to a <code>.data 2</code> directive.
  80. </p>
  81. <a name="index-even-directive_002c-M680x0"></a>
  82. </dd>
  83. <dt><code>.even</code></dt>
  84. <dd><p>This directive is a special case of the <code>.align</code> directive; it
  85. aligns the output to an even byte boundary.
  86. </p>
  87. <a name="index-skip-directive_002c-M680x0"></a>
  88. </dd>
  89. <dt><code>.skip</code></dt>
  90. <dd><p>This directive is identical to a <code>.space</code> directive.
  91. </p>
  92. <a name="index-arch-directive_002c-M680x0"></a>
  93. </dd>
  94. <dt><code>.arch <var>name</var></code></dt>
  95. <dd><p>Select the target architecture and extension features. Valid values
  96. for <var>name</var> are the same as for the <samp>-march</samp> command line
  97. option. This directive cannot be specified after
  98. any instructions have been assembled. If it is given multiple times,
  99. or in conjunction with the <samp>-march</samp> option, all uses must be for
  100. the same architecture and extension set.
  101. </p>
  102. <a name="index-cpu-directive_002c-M680x0"></a>
  103. </dd>
  104. <dt><code>.cpu <var>name</var></code></dt>
  105. <dd><p>Select the target cpu. Valid valuse
  106. for <var>name</var> are the same as for the <samp>-mcpu</samp> command line
  107. option. This directive cannot be specified after
  108. any instructions have been assembled. If it is given multiple times,
  109. or in conjunction with the <samp>-mopt</samp> option, all uses must be for
  110. the same cpu.
  111. </p>
  112. </dd>
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