<!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>Syntax (Using as)</title> <meta name="description" content="Syntax (Using as)"> <meta name="keywords" content="Syntax (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="index.html#Top" rel="up" title="Top"> <link href="Preprocessing.html#Preprocessing" rel="next" title="Preprocessing"> <link href="Z.html#Z" rel="prev" title="Z"> <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="Syntax"></a> <div class="header"> <p> Next: <a href="Sections.html#Sections" accesskey="n" rel="next">Sections</a>, Previous: <a href="Invoking.html#Invoking" accesskey="p" rel="prev">Invoking</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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> </div> <hr> <a name="Syntax-1"></a> <h2 class="chapter">3 Syntax</h2> <a name="index-machine_002dindependent-syntax"></a> <a name="index-syntax_002c-machine_002dindependent"></a> <p>This chapter describes the machine-independent syntax allowed in a source file. <code>as</code> syntax is similar to what many other assemblers use; it is inspired by the BSD 4.2 assembler, except that <code>as</code> does not assemble Vax bit-fields. </p> <table class="menu" border="0" cellspacing="0"> <tr><td align="left" valign="top">• <a href="Preprocessing.html#Preprocessing" accesskey="1">Preprocessing</a>:</td><td> </td><td align="left" valign="top">Preprocessing </td></tr> <tr><td align="left" valign="top">• <a href="Whitespace.html#Whitespace" accesskey="2">Whitespace</a>:</td><td> </td><td align="left" valign="top">Whitespace </td></tr> <tr><td align="left" valign="top">• <a href="Comments.html#Comments" accesskey="3">Comments</a>:</td><td> </td><td align="left" valign="top">Comments </td></tr> <tr><td align="left" valign="top">• <a href="Symbol-Intro.html#Symbol-Intro" accesskey="4">Symbol Intro</a>:</td><td> </td><td align="left" valign="top">Symbols </td></tr> <tr><td align="left" valign="top">• <a href="Statements.html#Statements" accesskey="5">Statements</a>:</td><td> </td><td align="left" valign="top">Statements </td></tr> <tr><td align="left" valign="top">• <a href="Constants.html#Constants" accesskey="6">Constants</a>:</td><td> </td><td align="left" valign="top">Constants </td></tr> </table> </body> </html>