134 lines
7.2 KiB
HTML
134 lines
7.2 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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(Linaro_Binutils-2017.02)
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version 2.27.0.
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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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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>LD: Scripts</title>
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<meta name="description" content="LD: Scripts">
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<meta name="keywords" content="LD: Scripts">
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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="index.html#Top" rel="up" title="Top">
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<link href="Basic-Script-Concepts.html#Basic-Script-Concepts" rel="next" title="Basic Script Concepts">
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<link href="Environment.html#Environment" rel="prev" title="Environment">
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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.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.indentedblock {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.smallindentedblock {margin-left: 3.2em; font-size: smaller}
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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.nocodebreak {white-space:nowrap}
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span.nolinebreak {white-space:nowrap}
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span.roman {font-family:serif; 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" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Scripts"></a>
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<div class="header">
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<p>
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Next: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="n" rel="next">Machine Dependent</a>, Previous: <a href="Invocation.html#Invocation" accesskey="p" rel="prev">Invocation</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="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="Linker-Scripts"></a>
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<h2 class="chapter">3 Linker Scripts</h2>
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<a name="index-scripts"></a>
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<a name="index-linker-scripts"></a>
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<a name="index-command-files"></a>
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<p>Every link is controlled by a <em>linker script</em>. This script is
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written in the linker command language.
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</p>
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<p>The main purpose of the linker script is to describe how the sections in
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the input files should be mapped into the output file, and to control
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the memory layout of the output file. Most linker scripts do nothing
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more than this. However, when necessary, the linker script can also
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direct the linker to perform many other operations, using the commands
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described below.
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</p>
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<p>The linker always uses a linker script. If you do not supply one
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yourself, the linker will use a default script that is compiled into the
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linker executable. You can use the ‘<samp>--verbose</samp>’ command line option
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to display the default linker script. Certain command line options,
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such as ‘<samp>-r</samp>’ or ‘<samp>-N</samp>’, will affect the default linker script.
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</p>
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<p>You may supply your own linker script by using the ‘<samp>-T</samp>’ command
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line option. When you do this, your linker script will replace the
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default linker script.
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</p>
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<p>You may also use linker scripts implicitly by naming them as input files
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to the linker, as though they were files to be linked. See <a href="Implicit-Linker-Scripts.html#Implicit-Linker-Scripts">Implicit Linker Scripts</a>.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Basic-Script-Concepts.html#Basic-Script-Concepts" accesskey="1">Basic Script Concepts</a>:</td><td> </td><td align="left" valign="top">Basic Linker Script Concepts
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Script-Format.html#Script-Format" accesskey="2">Script Format</a>:</td><td> </td><td align="left" valign="top">Linker Script Format
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Simple-Example.html#Simple-Example" accesskey="3">Simple Example</a>:</td><td> </td><td align="left" valign="top">Simple Linker Script Example
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Simple-Commands.html#Simple-Commands" accesskey="4">Simple Commands</a>:</td><td> </td><td align="left" valign="top">Simple Linker Script Commands
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Assignments.html#Assignments" accesskey="5">Assignments</a>:</td><td> </td><td align="left" valign="top">Assigning Values to Symbols
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</td></tr>
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<tr><td align="left" valign="top">• <a href="SECTIONS.html#SECTIONS" accesskey="6">SECTIONS</a>:</td><td> </td><td align="left" valign="top">SECTIONS Command
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</td></tr>
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<tr><td align="left" valign="top">• <a href="MEMORY.html#MEMORY" accesskey="7">MEMORY</a>:</td><td> </td><td align="left" valign="top">MEMORY Command
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</td></tr>
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<tr><td align="left" valign="top">• <a href="PHDRS.html#PHDRS" accesskey="8">PHDRS</a>:</td><td> </td><td align="left" valign="top">PHDRS Command
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</td></tr>
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<tr><td align="left" valign="top">• <a href="VERSION.html#VERSION" accesskey="9">VERSION</a>:</td><td> </td><td align="left" valign="top">VERSION Command
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Expressions.html#Expressions">Expressions</a>:</td><td> </td><td align="left" valign="top">Expressions in Linker Scripts
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Implicit-Linker-Scripts.html#Implicit-Linker-Scripts">Implicit Linker Scripts</a>:</td><td> </td><td align="left" valign="top">Implicit Linker Scripts
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</td></tr>
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</table>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Machine-Dependent.html#Machine-Dependent" accesskey="n" rel="next">Machine Dependent</a>, Previous: <a href="Invocation.html#Invocation" accesskey="p" rel="prev">Invocation</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="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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