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.
61 lines
2.5 KiB
HTML
61 lines
2.5 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Labels - Using as</title>
|
|
<meta http-equiv="Content-Type" content="text/html">
|
|
<meta name="description" content="Using as">
|
|
<meta name="generator" content="makeinfo 4.7">
|
|
<link title="Top" rel="start" href="index.html#Top">
|
|
<link rel="up" href="Symbols.html#Symbols" title="Symbols">
|
|
<link rel="next" href="Setting-Symbols.html#Setting-Symbols" title="Setting Symbols">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
This file documents the GNU Assembler "as".
|
|
|
|
Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
|
|
2006, 2007 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 1.1
|
|
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''.
|
|
|
|
man end-->
|
|
<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; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
<div class="node">
|
|
<p>
|
|
<a name="Labels"></a>Next: <a rel="next" accesskey="n" href="Setting-Symbols.html#Setting-Symbols">Setting Symbols</a>,
|
|
Up: <a rel="up" accesskey="u" href="Symbols.html#Symbols">Symbols</a>
|
|
<hr><br>
|
|
</div>
|
|
|
|
<h3 class="section">5.1 Labels</h3>
|
|
|
|
<p><a name="index-labels-210"></a>A <dfn>label</dfn> is written as a symbol immediately followed by a colon
|
|
<span class="samp">:</span>. The symbol then represents the current value of the
|
|
active location counter, and is, for example, a suitable instruction
|
|
operand. You are warned if you use the same symbol to represent two
|
|
different locations: the first definition overrides any other
|
|
definitions.
|
|
|
|
<p>On the HPPA, the usual form for a label need not be immediately followed by a
|
|
colon, but instead must start in column zero. Only one label may be defined on
|
|
a single line. To work around this, the HPPA version of <span class="command">as</span> also
|
|
provides a special directive <code>.label</code> for defining labels more flexibly.
|
|
|
|
</body></html>
|
|
|