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30 lines
1.3 KiB
HTML
30 lines
1.3 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<HTML>
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<HEAD>
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<TITLE>xAsm Labels</TITLE>
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</HEAD>
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<BODY BGCOLOR="#692764" TEXT="#F5A0D8" LINK="#8AAEE6" VLINK="#2B9DA4" ALINK="#95F0DA">
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<I><H2>Labels</H2></I><HR>
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<P>One of the assemblers main tasks is to keep track of addresses for you so you don't have to remember obscure numbers but can make do with a meaningful name, a label.<BR>
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<P>This can be done in a number of ways:<BR>
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<BR>
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<TABLE BORDER=0 BGCOLOR="Black" CELLPADDING=8 WIDTH="50%">
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<TR>
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<TD><FONT COLOR="#00FF00">
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<PRE>GlobalLabel
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AnotherGlobal:
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.locallabel
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.yet_a_local:
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ThisWillBeExported:: ;note the two colons</PRE>
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</FONT></TD>
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</TR>
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</TABLE>
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<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.<BR>
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<P>Labels will normally change their value during the <A HREF="../link.htm">link process</A> and are thus <B>not</B> constant.<BR>
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<BR>
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<BR><HR>
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<FONT SIZE="-1"><I><P ALIGN=RIGHT>Last updated 21 June 1997 by <A HREF="mailto:surfsmurf@matilde.demon.co.uk">Carsten Sorensen</A></P></I></FONT>
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