mirror of
https://github.com/gbdev/rgbds.git
synced 2025-11-20 18:22:07 +00:00
23 lines
1.2 KiB
HTML
23 lines
1.2 KiB
HTML
<!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:surfsmurf@matilde.demon.co.uk">Carsten Sorensen</a></p>
|
||
</body>
|
||
</html>
|