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114 lines
4.7 KiB
HTML
114 lines
4.7 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 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>Input Section Example (LD)</title>
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<meta name="description" content="Input Section Example (LD)">
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<meta name="keywords" content="Input Section Example (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="Input-Section.html#Input-Section" rel="up" title="Input Section">
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<link href="Output-Section-Data.html#Output-Section-Data" rel="next" title="Output Section Data">
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<link href="Input-Section-Keep.html#Input-Section-Keep" rel="prev" title="Input Section Keep">
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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="Input-Section-Example"></a>
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<div class="header">
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<p>
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Previous: <a href="Input-Section-Keep.html#Input-Section-Keep" accesskey="p" rel="prev">Input Section Keep</a>, Up: <a href="Input-Section.html#Input-Section" accesskey="u" rel="up">Input Section</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="Input-Section-Example-1"></a>
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<h4 class="subsubsection">3.6.4.5 Input Section Example</h4>
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<p>The following example is a complete linker script. It tells the linker
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to read all of the sections from file <samp>all.o</samp> and place them at the
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start of output section ‘<samp>outputa</samp>’ which starts at location
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‘<samp>0x10000</samp>’. All of section ‘<samp>.input1</samp>’ from file <samp>foo.o</samp>
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follows immediately, in the same output section. All of section
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‘<samp>.input2</samp>’ from <samp>foo.o</samp> goes into output section
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‘<samp>outputb</samp>’, followed by section ‘<samp>.input1</samp>’ from <samp>foo1.o</samp>.
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All of the remaining ‘<samp>.input1</samp>’ and ‘<samp>.input2</samp>’ sections from any
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files are written to output section ‘<samp>outputc</samp>’.
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</p>
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<div class="smallexample">
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<pre class="smallexample">SECTIONS {
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outputa 0x10000 :
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{
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all.o
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foo.o (.input1)
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}
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</pre><pre class="smallexample"> outputb :
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{
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foo.o (.input2)
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foo1.o (.input1)
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}
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</pre><pre class="smallexample"> outputc :
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{
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*(.input1)
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*(.input2)
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}
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}
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</pre></div>
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<p>If an output section’s name is the same as the input section’s name
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and is representable as a C identifier, then the linker will
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automatically see <a href="PROVIDE.html#PROVIDE">PROVIDE</a> two symbols: __start_SECNAME and
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__stop_SECNAME, where SECNAME is the name of the section. These
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indicate the start address and end address of the output section
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respectively. Note: most section names are not representable as
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C identifiers because they contain a ‘<samp>.</samp>’ character.
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</p>
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</body>
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</html>
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