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162 lines
5.7 KiB
HTML
162 lines
5.7 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Z8000 Directives (Using as)</title>
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<meta name="description" content="Z8000 Directives (Using as)">
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<meta name="keywords" content="Z8000 Directives (Using as)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Z8000_002dDependent.html#Z8000_002dDependent" rel="up" title="Z8000-Dependent">
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<link href="Z8000-Opcodes.html#Z8000-Opcodes" rel="next" title="Z8000 Opcodes">
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<link href="Z8000_002dAddressing.html#Z8000_002dAddressing" rel="prev" title="Z8000-Addressing">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Z8000-Directives"></a>
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<div class="header">
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<p>
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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> [<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>
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</div>
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<hr>
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<a name="Assembler-Directives-for-the-Z8000"></a>
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<h4 class="subsection">9.56.3 Assembler Directives for the Z8000</h4>
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<a name="index-Z8000-directives"></a>
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<a name="index-directives_002c-Z8000"></a>
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<p>The Z8000 port of as includes additional assembler directives,
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for compatibility with other Z8000 assemblers. These do not begin with
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‘<samp>.</samp>’ (unlike the ordinary as directives).
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</p>
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<dl compact="compact">
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<dd><a name="index-segm"></a>
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</dd>
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<dt><code>segm</code></dt>
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<dd><a name="index-_002ez8001"></a>
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</dd>
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<dt><code>.z8001</code></dt>
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<dd><p>Generate code for the segmented Z8001.
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</p>
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<a name="index-unsegm"></a>
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</dd>
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<dt><code>unsegm</code></dt>
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<dd><a name="index-_002ez8002"></a>
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</dd>
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<dt><code>.z8002</code></dt>
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<dd><p>Generate code for the unsegmented Z8002.
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</p>
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<a name="index-name"></a>
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</dd>
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<dt><code>name</code></dt>
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<dd><p>Synonym for <code>.file</code>
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</p>
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<a name="index-global"></a>
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</dd>
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<dt><code>global</code></dt>
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<dd><p>Synonym for <code>.global</code>
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</p>
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<a name="index-wval"></a>
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</dd>
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<dt><code>wval</code></dt>
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<dd><p>Synonym for <code>.word</code>
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</p>
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<a name="index-lval"></a>
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</dd>
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<dt><code>lval</code></dt>
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<dd><p>Synonym for <code>.long</code>
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</p>
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<a name="index-bval"></a>
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</dd>
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<dt><code>bval</code></dt>
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<dd><p>Synonym for <code>.byte</code>
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</p>
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<a name="index-sval"></a>
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</dd>
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<dt><code>sval</code></dt>
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<dd><p>Assemble a string. <code>sval</code> expects one string literal, delimited by
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single quotes. It assembles each byte of the string into consecutive
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addresses. You can use the escape sequence ‘<samp>%<var>xx</var></samp>’ (where
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<var>xx</var> represents a two-digit hexadecimal number) to represent the
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character whose <small>ASCII</small> value is <var>xx</var>. Use this feature to
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describe single quote and other characters that may not appear in string
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literals as themselves. For example, the C statement ‘<samp>char *a = "he said \"it's 50% off\"";</samp>’<!-- /@w --> is represented in Z8000 assembly language
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(shown with the assembler output in hex at the left) as
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</p>
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<div class="smallexample">
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<pre class="smallexample">68652073 sval 'he said %22it%27s 50%25 off%22%00'
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61696420
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22697427
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73203530
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25206F66
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662200
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</pre></div>
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<a name="index-rsect"></a>
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</dd>
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<dt><code>rsect</code></dt>
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<dd><p>synonym for <code>.section</code>
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</p>
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<a name="index-block"></a>
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</dd>
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<dt><code>block</code></dt>
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<dd><p>synonym for <code>.space</code>
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</p>
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<a name="index-even"></a>
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</dd>
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<dt><code>even</code></dt>
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<dd><p>special case of <code>.align</code>; aligns output to even byte boundary.
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</p></dd>
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</dl>
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</body>
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</html>
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