96 lines
4.1 KiB
HTML
96 lines
4.1 KiB
HTML
<!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) 1991-2016 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 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using as: Line</title>
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<meta name="description" content="Using as: Line">
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<meta name="keywords" content="Using as: Line">
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<meta name="resource-type" content="document">
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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="Pseudo-Ops.html#Pseudo-Ops" rel="up" title="Pseudo Ops">
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<link href="Linkonce.html#Linkonce" rel="next" title="Linkonce">
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<link href="Lflags.html#Lflags" rel="prev" title="Lflags">
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Line"></a>
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<div class="header">
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<p>
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Next: <a href="Linkonce.html#Linkonce" accesskey="n" rel="next">Linkonce</a>, Previous: <a href="Lflags.html#Lflags" accesskey="p" rel="prev">Lflags</a>, Up: <a href="Pseudo-Ops.html#Pseudo-Ops" accesskey="u" rel="up">Pseudo Ops</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="g_t_002eline-line_002dnumber"></a>
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<h3 class="section">7.50 <code>.line <var>line-number</var></code></h3>
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<a name="index-line-directive"></a>
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<a name="index-logical-line-number"></a>
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<p>Change the logical line number. <var>line-number</var> must be an absolute
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expression. The next line has that logical line number. Therefore any other
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statements on the current line (after a statement separator character) are
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reported as on logical line number <var>line-number</var> - 1. One day
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<code>as</code> will no longer support this directive: it is recognized only
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for compatibility with existing assembler programs.
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</p>
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<p>Even though this is a directive associated with the <code>a.out</code> or
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<code>b.out</code> object-code formats, <code>as</code> still recognizes it
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when producing COFF output, and treats ‘<samp>.line</samp>’ as though it
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were the COFF ‘<samp>.ln</samp>’ <em>if</em> it is found outside a
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<code>.def</code>/<code>.endef</code> pair.
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</p>
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<p>Inside a <code>.def</code>, ‘<samp>.line</samp>’ is, instead, one of the directives
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used by compilers to generate auxiliary symbol information for
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debugging.
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</p>
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</body>
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</html>
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