78 lines
3.7 KiB
HTML
78 lines
3.7 KiB
HTML
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<title>Altmacro - Using as</title>
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
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2006, 2007 Free Software Foundation, Inc.
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<p>
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<a name="Altmacro"></a>Next: <a rel="next" accesskey="n" href="Ascii.html#Ascii">Ascii</a>,
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Previous: <a rel="previous" accesskey="p" href="Align.html#Align">Align</a>,
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Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a>
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</div>
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<h3 class="section">7.77 <code>.altmacro</code></h3>
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<p>Enable alternate macro mode, enabling:
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<dl>
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<dt><code>LOCAL </code><var>name</var><code> [ , ... ]</code><a name="index-LOCAL-_0040var_007bname_007d-_005b-_002c-_0040dots_007b_007d-_005d-399"></a><dd>One additional directive, <code>LOCAL</code>, is available. It is used to
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generate a string replacement for each of the <var>name</var> arguments, and
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replace any instances of <var>name</var> in each macro expansion. The
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replacement string is unique in the assembly, and different for each
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separate macro expansion. <code>LOCAL</code> allows you to write macros that
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define symbols, without fear of conflict between separate macro expansions.
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<br><dt><code>String delimiters</code><a name="index-String-delimiters-400"></a><dd>You can write strings delimited in these other ways besides
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<code>"</code><var>string</var><code>"</code>:
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<dl>
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<dt><code>'</code><var>string</var><code>'</code><dd>You can delimit strings with single-quote characters.
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<br><dt><code><</code><var>string</var><code>></code><dd>You can delimit strings with matching angle brackets.
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</dl>
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<br><dt><code>single-character string escape</code><a name="index-single_002dcharacter-string-escape-401"></a><dd>To include any single character literally in a string (even if the
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character would otherwise have some special meaning), you can prefix the
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character with <span class="samp">!</span> (an exclamation mark). For example, you can
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write <span class="samp"><4.3 !> 5.4!!></span> to get the literal text <span class="samp">4.3 > 5.4!</span>.
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<br><dt><code>Expression results as strings</code><a name="index-Expression-results-as-strings-402"></a><dd>You can write <span class="samp">%</span><var>expr</var> to evaluate the expression <var>expr</var>
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and use the result as a string.
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</dl>
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</body></html>
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