69 lines
3.1 KiB
HTML
69 lines
3.1 KiB
HTML
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<html lang="en">
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<head>
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<title>Line - Using as</title>
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<meta name="description" content="Using as">
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<meta name="generator" content="makeinfo 4.13">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Pseudo-Ops.html#Pseudo-Ops" title="Pseudo Ops">
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<link rel="prev" href="Lflags.html#Lflags" title="Lflags">
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<link rel="next" href="Linkonce.html#Linkonce" title="Linkonce">
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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) 1991-2019 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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<style type="text/css"><!--
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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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<a name="Line"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Linkonce.html#Linkonce">Linkonce</a>,
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Previous: <a rel="previous" accesskey="p" href="Lflags.html#Lflags">Lflags</a>,
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Up: <a rel="up" accesskey="u" href="Pseudo-Ops.html#Pseudo-Ops">Pseudo Ops</a>
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<hr>
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</div>
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<h3 class="section">7.53 <code>.line </code><var>line-number</var></h3>
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<p><a name="index-g_t_0040code_007bline_007d-directive-393"></a><a name="index-logical-line-number-394"></a>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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<samp><span class="command">as</span></samp> 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>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, <samp><span class="command">as</span></samp> still recognizes it
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when producing COFF output, and treats ‘<samp><span class="samp">.line</span></samp>’ as though it
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were the COFF ‘<samp><span class="samp">.ln</span></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>Inside a <code>.def</code>, ‘<samp><span class="samp">.line</span></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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</body></html>
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