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  1. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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  3. <!-- This file documents the GNU Assembler "as".
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  15. <title>Altmacro (Using as)</title>
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  23. <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
  24. <link href="Pseudo-Ops.html#Pseudo-Ops" rel="up" title="Pseudo Ops">
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  56. <a name="Altmacro"></a>
  57. <div class="header">
  58. <p>
  59. Next: <a href="Ascii.html#Ascii" accesskey="n" rel="next">Ascii</a>, Previous: <a href="Align.html#Align" accesskey="p" rel="prev">Align</a>, Up: <a href="Pseudo-Ops.html#Pseudo-Ops" accesskey="u" rel="up">Pseudo Ops</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
  60. </div>
  61. <hr>
  62. <a name="g_t_002ealtmacro"></a>
  63. <h3 class="section">7.4 <code>.altmacro</code></h3>
  64. <p>Enable alternate macro mode, enabling:
  65. </p>
  66. <dl compact="compact">
  67. <dt><code>LOCAL <var>name</var> [ , &hellip; ]</code>
  68. <a name="index-LOCAL-name-_005b-_002c-_2026-_005d"></a>
  69. </dt>
  70. <dd><p>One additional directive, <code>LOCAL</code>, is available. It is used to
  71. generate a string replacement for each of the <var>name</var> arguments, and
  72. replace any instances of <var>name</var> in each macro expansion. The
  73. replacement string is unique in the assembly, and different for each
  74. separate macro expansion. <code>LOCAL</code> allows you to write macros that
  75. define symbols, without fear of conflict between separate macro expansions.
  76. </p>
  77. </dd>
  78. <dt><code>String delimiters</code>
  79. <a name="index-String-delimiters"></a>
  80. </dt>
  81. <dd><p>You can write strings delimited in these other ways besides
  82. <code>&quot;<var>string</var>&quot;</code>:
  83. </p>
  84. <dl compact="compact">
  85. <dt><code>'<var>string</var>'</code></dt>
  86. <dd><p>You can delimit strings with single-quote characters.
  87. </p>
  88. </dd>
  89. <dt><code>&lt;<var>string</var>&gt;</code></dt>
  90. <dd><p>You can delimit strings with matching angle brackets.
  91. </p></dd>
  92. </dl>
  93. </dd>
  94. <dt><code>single-character string escape</code>
  95. <a name="index-single_002dcharacter-string-escape"></a>
  96. </dt>
  97. <dd><p>To include any single character literally in a string (even if the
  98. character would otherwise have some special meaning), you can prefix the
  99. character with &lsquo;<samp>!</samp>&rsquo; (an exclamation mark). For example, you can
  100. write &lsquo;<samp>&lt;4.3 !&gt; 5.4!!&gt;</samp>&rsquo; to get the literal text &lsquo;<samp>4.3 &gt; 5.4!</samp>&rsquo;.
  101. </p>
  102. </dd>
  103. <dt><code>Expression results as strings</code>
  104. <a name="index-Expression-results-as-strings"></a>
  105. </dt>
  106. <dd><p>You can write &lsquo;<samp>%<var>expr</var></samp>&rsquo; to evaluate the expression <var>expr</var>
  107. and use the result as a string.
  108. </p></dd>
  109. </dl>
  110. </body>
  111. </html>