1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- This file documents the GNU Assembler "as". 4 5Copyright (C) 1991-2021 Free Software Foundation, Inc. 6 7Permission is granted to copy, distribute and/or modify this document 8under the terms of the GNU Free Documentation License, Version 1.3 9or any later version published by the Free Software Foundation; 10with no Invariant Sections, with no Front-Cover Texts, and with no 11Back-Cover Texts. A copy of the license is included in the 12section entitled "GNU Free Documentation License". 13 --> 14<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> 15<head> 16<title>Using as: Altmacro</title> 17 18<meta name="description" content="Using as: Altmacro"> 19<meta name="keywords" content="Using as: Altmacro"> 20<meta name="resource-type" content="document"> 21<meta name="distribution" content="global"> 22<meta name="Generator" content="makeinfo"> 23<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 24<link href="index.html#Top" rel="start" title="Top"> 25<link href="AS-Index.html#AS-Index" rel="index" title="AS Index"> 26<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> 27<link href="Pseudo-Ops.html#Pseudo-Ops" rel="up" title="Pseudo Ops"> 28<link href="Ascii.html#Ascii" rel="next" title="Ascii"> 29<link href="Align.html#Align" rel="previous" title="Align"> 30<style type="text/css"> 31<!-- 32a.summary-letter {text-decoration: none} 33blockquote.smallquotation {font-size: smaller} 34div.display {margin-left: 3.2em} 35div.example {margin-left: 3.2em} 36div.indentedblock {margin-left: 3.2em} 37div.lisp {margin-left: 3.2em} 38div.smalldisplay {margin-left: 3.2em} 39div.smallexample {margin-left: 3.2em} 40div.smallindentedblock {margin-left: 3.2em; font-size: smaller} 41div.smalllisp {margin-left: 3.2em} 42kbd {font-style:oblique} 43pre.display {font-family: inherit} 44pre.format {font-family: inherit} 45pre.menu-comment {font-family: serif} 46pre.menu-preformatted {font-family: serif} 47pre.smalldisplay {font-family: inherit; font-size: smaller} 48pre.smallexample {font-size: smaller} 49pre.smallformat {font-family: inherit; font-size: smaller} 50pre.smalllisp {font-size: smaller} 51span.nocodebreak {white-space:nowrap} 52span.nolinebreak {white-space:nowrap} 53span.roman {font-family:serif; font-weight:normal} 54span.sansserif {font-family:sans-serif; font-weight:normal} 55ul.no-bullet {list-style: none} 56--> 57</style> 58 59 60</head> 61 62<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> 63<a name="Altmacro"></a> 64<div class="header"> 65<p> 66Next: <a href="Ascii.html#Ascii" accesskey="n" rel="next">Ascii</a>, Previous: <a href="Align.html#Align" accesskey="p" rel="previous">Align</a>, Up: <a href="Pseudo-Ops.html#Pseudo-Ops" accesskey="u" rel="up">Pseudo Ops</a> [<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> 67</div> 68<hr> 69<a name="g_t_002ealtmacro"></a> 70<h3 class="section">7.4 <code>.altmacro</code></h3> 71<p>Enable alternate macro mode, enabling: 72</p> 73<dl compact="compact"> 74<dt><code>LOCAL <var>name</var> [ , … ]</code> 75<a name="index-LOCAL-name-_005b-_002c-_2026-_005d"></a> 76</dt> 77<dd><p>One additional directive, <code>LOCAL</code>, is available. It is used to 78generate a string replacement for each of the <var>name</var> arguments, and 79replace any instances of <var>name</var> in each macro expansion. The 80replacement string is unique in the assembly, and different for each 81separate macro expansion. <code>LOCAL</code> allows you to write macros that 82define symbols, without fear of conflict between separate macro expansions. 83</p> 84</dd> 85<dt><code>String delimiters</code> 86<a name="index-String-delimiters"></a> 87</dt> 88<dd><p>You can write strings delimited in these other ways besides 89<code>"<var>string</var>"</code>: 90</p> 91<dl compact="compact"> 92<dt><code>'<var>string</var>'</code></dt> 93<dd><p>You can delimit strings with single-quote characters. 94</p> 95</dd> 96<dt><code><<var>string</var>></code></dt> 97<dd><p>You can delimit strings with matching angle brackets. 98</p></dd> 99</dl> 100 101</dd> 102<dt><code>single-character string escape</code> 103<a name="index-single_002dcharacter-string-escape"></a> 104</dt> 105<dd><p>To include any single character literally in a string (even if the 106character would otherwise have some special meaning), you can prefix the 107character with ‘<samp>!</samp>’ (an exclamation mark). For example, you can 108write ‘<samp><4.3 !> 5.4!!></samp>’ to get the literal text ‘<samp>4.3 > 5.4!</samp>’. 109</p> 110</dd> 111<dt><code>Expression results as strings</code> 112<a name="index-Expression-results-as-strings"></a> 113</dt> 114<dd><p>You can write ‘<samp>%<var>expr</var></samp>’ to evaluate the expression <var>expr</var> 115and use the result as a string. 116</p></dd> 117</dl> 118 119 120 121 122</body> 123</html> 124