72 lines
3.2 KiB
HTML
72 lines
3.2 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Set - 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="Section.html#Section" title="Section">
|
|
<link rel="next" href="Short.html#Short" title="Short">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
This file documents the GNU Assembler "as".
|
|
|
|
Copyright (C) 1991-2019 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="Set"></a>
|
|
<p>
|
|
Next: <a rel="next" accesskey="n" href="Short.html#Short">Short</a>,
|
|
Previous: <a rel="previous" accesskey="p" href="Section.html#Section">Section</a>,
|
|
Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a>
|
|
<hr>
|
|
</div>
|
|
|
|
<h3 class="section">7.83 <code>.set </code><var>symbol</var><code>, </code><var>expression</var></h3>
|
|
|
|
<p><a name="index-g_t_0040code_007bset_007d-directive-465"></a><a name="index-symbol-value_002c-setting-466"></a>Set the value of <var>symbol</var> to <var>expression</var>. This
|
|
changes <var>symbol</var>'s value and type to conform to
|
|
<var>expression</var>. If <var>symbol</var> was flagged as external, it remains
|
|
flagged (see <a href="Symbol-Attributes.html#Symbol-Attributes">Symbol Attributes</a>).
|
|
|
|
<p>You may <code>.set</code> a symbol many times in the same assembly provided that the
|
|
values given to the symbol are constants. Values that are based on expressions
|
|
involving other symbols are allowed, but some targets may restrict this to only
|
|
being done once per assembly. This is because those targets do not set the
|
|
addresses of symbols at assembly time, but rather delay the assignment until a
|
|
final link is performed. This allows the linker a chance to change the code in
|
|
the files, changing the location of, and the relative distance between, various
|
|
different symbols.
|
|
|
|
<p>If you <code>.set</code> a global symbol, the value stored in the object
|
|
file is the last value stored into it.
|
|
|
|
<p>On Z80 <code>set</code> is a real instruction, use
|
|
‘<samp><var>symbol</var><span class="samp"> defl </span><var>expression</var></samp>’ instead.
|
|
|
|
</body></html>
|
|
|