shithub: rgbds

ref: 17192ea6f07c2697bd87bc28df015a66f6e97fc3
dir: /doc/asm/labels.htm/

View raw version
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>xAsm Labels</title>
        <link rel="stylesheet" type="text/css" href="../style.css">
</head>
<body>
<h1>Labels</h1>
<p>One of the assembler’s main tasks is to keep track of addresses for you so you dor’t have to remember obscure numbers but can make do with a meaningful name, a label.</p>
<p>This can be done in a number of ways:</p>
<pre>GlobalLabel
AnotherGlobal:
.locallabel
.yet_a_local:
ThisWillBeExported::        ;note the two colons</pre>
<p>This  is very similar to other assemblers. Local labels are  only accessible within the scope they are defined. A scope starts after a global label and ends at the next global label. You  may  or  may not have seen the <b>::</b> feature  before. It declares a normal global label but does an <a href="export.htm">EXPORT</a> at the same time.</p>
<p>Labels will normally change their value during the <a href="../link.htm">link process</a> and are thus <em>not</em> constant.</p>
<hr>
<p>Last updated 21 June 1997 by <a href="mailto:[email protected]">Carsten Sorensen</a></p>
</body>
</html>