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107 lines
4.6 KiB
HTML
107 lines
4.6 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 linker LD
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(SiFive Binutils 2.32.0-2020.04.1)
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version 2.32.
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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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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Output Section Description (LD)</title>
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<meta name="description" content="Output Section Description (LD)">
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<meta name="keywords" content="Output Section Description (LD)">
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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="LD-Index.html#LD-Index" rel="index" title="LD Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="SECTIONS.html#SECTIONS" rel="up" title="SECTIONS">
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<link href="Output-Section-Name.html#Output-Section-Name" rel="next" title="Output Section Name">
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<link href="SECTIONS.html#SECTIONS" rel="prev" title="SECTIONS">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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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="Output-Section-Description"></a>
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<div class="header">
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<p>
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Next: <a href="Output-Section-Name.html#Output-Section-Name" accesskey="n" rel="next">Output Section Name</a>, Up: <a href="SECTIONS.html#SECTIONS" accesskey="u" rel="up">SECTIONS</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Output-Section-Description-1"></a>
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<h4 class="subsection">3.6.1 Output Section Description</h4>
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<p>The full description of an output section looks like this:
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</p><div class="smallexample">
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<pre class="smallexample"><var>section</var> [<var>address</var>] [(<var>type</var>)] :
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[AT(<var>lma</var>)]
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[ALIGN(<var>section_align</var>) | ALIGN_WITH_INPUT]
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[SUBALIGN(<var>subsection_align</var>)]
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[<var>constraint</var>]
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{
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<var>output-section-command</var>
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<var>output-section-command</var>
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…
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} [><var>region</var>] [AT><var>lma_region</var>] [:<var>phdr</var> :<var>phdr</var> …] [=<var>fillexp</var>] [,]
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</pre></div>
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<p>Most output sections do not use most of the optional section attributes.
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</p>
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<p>The whitespace around <var>section</var> is required, so that the section
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name is unambiguous. The colon and the curly braces are also required.
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The comma at the end may be required if a <var>fillexp</var> is used and
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the next <var>sections-command</var> looks like a continuation of the expression.
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The line breaks and other white space are optional.
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</p>
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<p>Each <var>output-section-command</var> may be one of the following:
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</p>
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<ul>
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<li> a symbol assignment (see <a href="Assignments.html#Assignments">Assignments</a>)
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</li><li> an input section description (see <a href="Input-Section.html#Input-Section">Input Section</a>)
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</li><li> data values to include directly (see <a href="Output-Section-Data.html#Output-Section-Data">Output Section Data</a>)
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</li><li> a special output section keyword (see <a href="Output-Section-Keywords.html#Output-Section-Keywords">Output Section Keywords</a>)
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</li></ul>
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</body>
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</html>
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