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94 lines
4.5 KiB
HTML
94 lines
4.5 KiB
HTML
15 years ago
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<html lang="en">
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<head>
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<title>Z8000 Directives - Using as</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Using as">
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<meta name="generator" content="makeinfo 4.7">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Z8000_002dDependent.html#Z8000_002dDependent" title="Z8000-Dependent">
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<link rel="prev" href="Z8000-Syntax.html#Z8000-Syntax" title="Z8000 Syntax">
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<link rel="next" href="Z8000-Opcodes.html#Z8000-Opcodes" title="Z8000 Opcodes">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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This file documents the GNU Assembler "as".
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Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
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2006, 2007 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 1.1
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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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man end-->
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<meta http-equiv="Content-Style-Type" content="text/css">
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<style type="text/css"><!--
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pre.display { font-family:inherit }
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pre.format { font-family:inherit }
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pre.smalldisplay { font-family:inherit; font-size:smaller }
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pre.smallformat { font-family:inherit; font-size:smaller }
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pre.smallexample { font-size:smaller }
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pre.smalllisp { font-size:smaller }
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span.sc { font-variant:small-caps }
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span.roman { font-family: serif; font-weight: normal; }
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--></style>
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</head>
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<body>
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<div class="node">
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<p>
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<a name="Z8000-Directives"></a>Next: <a rel="next" accesskey="n" href="Z8000-Opcodes.html#Z8000-Opcodes">Z8000 Opcodes</a>,
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Previous: <a rel="previous" accesskey="p" href="Z8000-Syntax.html#Z8000-Syntax">Z8000 Syntax</a>,
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Up: <a rel="up" accesskey="u" href="Z8000_002dDependent.html#Z8000_002dDependent">Z8000-Dependent</a>
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<hr><br>
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</div>
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<h4 class="subsection">9.33.3 Assembler Directives for the Z8000</h4>
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<p><a name="index-Z8000-directives-1715"></a><a name="index-directives_002c-Z8000-1716"></a>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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<span class="samp">.</span> (unlike the ordinary as directives).
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<a name="index-segm-1717"></a>
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<dl><dt><code>segm</code><dd><a name="index-_002ez8001-1718"></a><dt><code>.z8001</code><dd>Generate code for the segmented Z8001.
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<p><a name="index-unsegm-1719"></a><br><dt><code>unsegm</code><dd><a name="index-_002ez8002-1720"></a><dt><code>.z8002</code><dd>Generate code for the unsegmented Z8002.
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<p><a name="index-name-1721"></a><br><dt><code>name</code><dd>Synonym for <code>.file</code>
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<p><a name="index-global-1722"></a><br><dt><code>global</code><dd>Synonym for <code>.global</code>
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<p><a name="index-wval-1723"></a><br><dt><code>wval</code><dd>Synonym for <code>.word</code>
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<p><a name="index-lval-1724"></a><br><dt><code>lval</code><dd>Synonym for <code>.long</code>
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<p><a name="index-bval-1725"></a><br><dt><code>bval</code><dd>Synonym for <code>.byte</code>
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<p><a name="index-sval-1726"></a><br><dt><code>sval</code><dd>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 <span class="samp">%</span><var>xx</var> (where
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<var>xx</var> represents a two-digit hexadecimal number) to represent the
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character whose <span class="sc">ascii</span> 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 <span class="samp">char *a = "he said \"it's 50% off\"";</span><!-- /@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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<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>
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<p><a name="index-rsect-1727"></a><br><dt><code>rsect</code><dd>synonym for <code>.section</code>
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<p><a name="index-block-1728"></a><br><dt><code>block</code><dd>synonym for <code>.space</code>
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<p><a name="index-even-1729"></a><br><dt><code>even</code><dd>special case of <code>.align</code>; aligns output to even byte boundary.
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</dl>
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</body></html>
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