visus
/
toolchain-gcc-arm-embedded


			
							<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- This file documents the GNU Assembler "as".

Copyright (C) 1991-2020 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".
 -->
<!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Z8000 Directives (Using as)</title>

<meta name="description" content="Z8000 Directives (Using as)">
<meta name="keywords" content="Z8000 Directives (Using as)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<link href="index.html#Top" rel="start" title="Top">
<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Z8000_002dDependent.html#Z8000_002dDependent" rel="up" title="Z8000-Dependent">
<link href="Z8000-Opcodes.html#Z8000-Opcodes" rel="next" title="Z8000 Opcodes">
<link href="Z8000_002dAddressing.html#Z8000_002dAddressing" rel="prev" title="Z8000-Addressing">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smalllisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
ul.no-bullet {list-style: none}
-->
</style>


</head>

<body lang="en">
<a name="Z8000-Directives"></a>
<div class="header">
<p>
Next: <a href="Z8000-Opcodes.html#Z8000-Opcodes" accesskey="n" rel="next">Z8000 Opcodes</a>, Previous: <a href="Z8000-Syntax.html#Z8000-Syntax" accesskey="p" rel="prev">Z8000 Syntax</a>, Up: <a href="Z8000_002dDependent.html#Z8000_002dDependent" accesskey="u" rel="up">Z8000-Dependent</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<a name="Assembler-Directives-for-the-Z8000"></a>
<h4 class="subsection">9.57.3 Assembler Directives for the Z8000</h4>

<a name="index-Z8000-directives"></a>
<a name="index-directives_002c-Z8000"></a>
<p>The Z8000 port of as includes additional assembler directives,
for compatibility with other Z8000 assemblers.  These do not begin with
&lsquo;<samp>.</samp>&rsquo; (unlike the ordinary as directives).
</p>
<dl compact="compact">
<dd><a name="index-segm"></a>
</dd>
<dt><code>segm</code></dt>
<dd><a name="index-_002ez8001"></a>
</dd>
<dt><code>.z8001</code></dt>
<dd><p>Generate code for the segmented Z8001.
</p>
<a name="index-unsegm"></a>
</dd>
<dt><code>unsegm</code></dt>
<dd><a name="index-_002ez8002"></a>
</dd>
<dt><code>.z8002</code></dt>
<dd><p>Generate code for the unsegmented Z8002.
</p>
<a name="index-name"></a>
</dd>
<dt><code>name</code></dt>
<dd><p>Synonym for <code>.file</code>
</p>
<a name="index-global"></a>
</dd>
<dt><code>global</code></dt>
<dd><p>Synonym for <code>.global</code>
</p>
<a name="index-wval"></a>
</dd>
<dt><code>wval</code></dt>
<dd><p>Synonym for <code>.word</code>
</p>
<a name="index-lval"></a>
</dd>
<dt><code>lval</code></dt>
<dd><p>Synonym for <code>.long</code>
</p>
<a name="index-bval"></a>
</dd>
<dt><code>bval</code></dt>
<dd><p>Synonym for <code>.byte</code>
</p>
<a name="index-sval"></a>
</dd>
<dt><code>sval</code></dt>
<dd><p>Assemble a string.  <code>sval</code> expects one string literal, delimited by
single quotes.  It assembles each byte of the string into consecutive
addresses.  You can use the escape sequence &lsquo;<samp>%<var>xx</var></samp>&rsquo; (where
<var>xx</var> represents a two-digit hexadecimal number) to represent the
character whose <small>ASCII</small> value is <var>xx</var>.  Use this feature to
describe single quote and other characters that may not appear in string
literals as themselves.  For example, the C statement &lsquo;<samp>char&nbsp;*a&nbsp;=&nbsp;&quot;he&nbsp;said&nbsp;\&quot;it's&nbsp;50%&nbsp;off\&quot;&quot;;</samp>&rsquo;<!-- /@w --> is represented in Z8000 assembly language
(shown with the assembler output in hex at the left) as
</p>
<div class="smallexample">
<pre class="smallexample">68652073    sval    'he said %22it%27s 50%25 off%22%00'
61696420
22697427
73203530
25206F66
662200
</pre></div>

<a name="index-rsect"></a>
</dd>
<dt><code>rsect</code></dt>
<dd><p>synonym for <code>.section</code>
</p>
<a name="index-block"></a>
</dd>
<dt><code>block</code></dt>
<dd><p>synonym for <code>.space</code>
</p>
<a name="index-even"></a>
</dd>
<dt><code>even</code></dt>
<dd><p>special case of <code>.align</code>; aligns output to even byte boundary.
</p></dd>
</dl>


</body>
</html>