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106 lines
5.0 KiB
HTML
106 lines
5.0 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>MMIX-Syntax (Using as)</title>
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<meta name="description" content="MMIX-Syntax (Using as)">
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<meta name="keywords" content="MMIX-Syntax (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="MMIX_002dDependent.html#MMIX_002dDependent" rel="up" title="MMIX-Dependent">
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<link href="MMIX_002dChars.html#MMIX_002dChars" rel="next" title="MMIX-Chars">
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<link href="MMIX_002dExpand.html#MMIX_002dExpand" rel="prev" title="MMIX-Expand">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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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="MMIX_002dSyntax"></a>
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<div class="header">
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<p>
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Next: <a href="MMIX_002dmmixal.html#MMIX_002dmmixal" accesskey="n" rel="next">MMIX-mmixal</a>, Previous: <a href="MMIX_002dExpand.html#MMIX_002dExpand" accesskey="p" rel="prev">MMIX-Expand</a>, Up: <a href="MMIX_002dDependent.html#MMIX_002dDependent" accesskey="u" rel="up">MMIX-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="Syntax-20"></a>
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<h4 class="subsection">9.27.3 Syntax</h4>
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<p>The assembly syntax is supposed to be upward compatible with that
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described in Sections 1.3 and 1.4 of ‘<samp>The Art of Computer
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Programming, Volume 1</samp>’. Draft versions of those chapters as well as other
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MMIX information is located at
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<a name="mmixsite"></a><a href="http://www-cs-faculty.stanford.edu/~knuth/mmix-news.html">http://www-cs-faculty.stanford.edu/~knuth/mmix-news.html</a>.
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Most code examples from the mmixal package located there should work
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unmodified when assembled and linked as single files, with a few
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noteworthy exceptions (see <a href="MMIX_002dmmixal.html#MMIX_002dmmixal">MMIX-mmixal</a>).
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</p>
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<p>Before an instruction is emitted, the current location is aligned to the
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next four-byte boundary. If a label is defined at the beginning of the
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line, its value will be the aligned value.
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</p>
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<p>In addition to the traditional hex-prefix ‘<samp>0x</samp>’, a hexadecimal number
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can also be specified by the prefix character ‘<samp>#</samp>’.
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</p>
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<p>After all operands to an MMIX instruction or directive have been
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specified, the rest of the line is ignored, treated as a comment.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="MMIX_002dChars.html#MMIX_002dChars" accesskey="1">MMIX-Chars</a>:</td><td> </td><td align="left" valign="top">Special Characters
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</td></tr>
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<tr><td align="left" valign="top">• <a href="MMIX_002dSymbols.html#MMIX_002dSymbols" accesskey="2">MMIX-Symbols</a>:</td><td> </td><td align="left" valign="top">Symbols
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</td></tr>
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<tr><td align="left" valign="top">• <a href="MMIX_002dRegs.html#MMIX_002dRegs" accesskey="3">MMIX-Regs</a>:</td><td> </td><td align="left" valign="top">Register Names
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</td></tr>
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<tr><td align="left" valign="top">• <a href="MMIX_002dPseudos.html#MMIX_002dPseudos" accesskey="4">MMIX-Pseudos</a>:</td><td> </td><td align="left" valign="top">Assembler Directives
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</td></tr>
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</table>
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</body>
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</html>
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