You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
2.5 KiB
HTML
65 lines
2.5 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Equiv - Using as</title>
|
|
<meta http-equiv="Content-Type" content="text/html">
|
|
<meta name="description" content="Using as">
|
|
<meta name="generator" content="makeinfo 4.13">
|
|
<link title="Top" rel="start" href="index.html#Top">
|
|
<link rel="up" href="Pseudo-Ops.html#Pseudo-Ops" title="Pseudo Ops">
|
|
<link rel="prev" href="Equ.html#Equ" title="Equ">
|
|
<link rel="next" href="Eqv.html#Eqv" title="Eqv">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
This file documents the GNU Assembler "as".
|
|
|
|
Copyright (C) 1991-2015 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3
|
|
or any later version published by the Free Software Foundation;
|
|
with no Invariant Sections, with no Front-Cover Texts, and with no
|
|
Back-Cover Texts. A copy of the license is included in the
|
|
section entitled ``GNU Free Documentation License''.
|
|
|
|
-->
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
|
<style type="text/css"><!--
|
|
pre.display { font-family:inherit }
|
|
pre.format { font-family:inherit }
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
|
pre.smallexample { font-size:smaller }
|
|
pre.smalllisp { font-size:smaller }
|
|
span.sc { font-variant:small-caps }
|
|
span.roman { font-family:serif; font-weight:normal; }
|
|
span.sansserif { font-family:sans-serif; font-weight:normal; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
<div class="node">
|
|
<a name="Equiv"></a>
|
|
<p>
|
|
Next: <a rel="next" accesskey="n" href="Eqv.html#Eqv">Eqv</a>,
|
|
Previous: <a rel="previous" accesskey="p" href="Equ.html#Equ">Equ</a>,
|
|
Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a>
|
|
<hr>
|
|
</div>
|
|
|
|
<h3 class="section">7.25 <code>.equiv </code><var>symbol</var><code>, </code><var>expression</var></h3>
|
|
|
|
<p><a name="index-g_t_0040code_007bequiv_007d-directive-332"></a>The <code>.equiv</code> directive is like <code>.equ</code> and <code>.set</code>, except that
|
|
the assembler will signal an error if <var>symbol</var> is already defined. Note a
|
|
symbol which has been referenced but not actually defined is considered to be
|
|
undefined.
|
|
|
|
<p>Except for the contents of the error message, this is roughly equivalent to
|
|
<pre class="smallexample"> .ifdef SYM
|
|
.err
|
|
.endif
|
|
.equ SYM,VAL
|
|
</pre>
|
|
<p>plus it protects the symbol from later redefinition.
|
|
|
|
</body></html>
|
|
|