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115 lines
5.5 KiB
HTML
115 lines
5.5 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 BFD library.
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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 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "GNU General Public License" and "Funding
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Free Software", the Front-Cover texts being (a) (see below), and with
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the Back-Cover Texts being (b) (see below). A copy of the license is
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included in the section entitled "GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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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>Performing the Final Link (Untitled Document)</title>
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<meta name="description" content="Performing the Final Link (Untitled Document)">
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<meta name="keywords" content="Performing the Final Link (Untitled Document)">
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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="BFD-Index.html#BFD-Index" rel="index" title="BFD Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Linker-Functions.html#Linker-Functions" rel="up" title="Linker Functions">
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<link href="Information-provided-by-the-linker.html#Information-provided-by-the-linker" rel="next" title="Information provided by the linker">
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<link href="Adding-symbols-from-an-archive.html#Adding-symbols-from-an-archive" rel="prev" title="Adding symbols from an archive">
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<style type="text/css">
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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="Performing-the-Final-Link"></a>
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<div class="header">
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<p>
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Previous: <a href="Adding-Symbols-to-the-Hash-Table.html#Adding-Symbols-to-the-Hash-Table" accesskey="p" rel="prev">Adding Symbols to the Hash Table</a>, Up: <a href="Linker-Functions.html#Linker-Functions" accesskey="u" rel="up">Linker Functions</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="BFD-Index.html#BFD-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Performing-the-final-link"></a>
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<h4 class="subsection">2.17.3 Performing the final link</h4>
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<a name="index-_005fbfd_005flink_005ffinal_005flink-in-target-vector"></a>
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<a name="index-target-vector-_0028_005fbfd_005ffinal_005flink_0029"></a>
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<p>When all the input files have been processed, the linker calls
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the <code>_bfd_final_link</code> entry point of the output BFD. This
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routine is responsible for producing the final output file,
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which has several aspects. It must relocate the contents of
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the input sections and copy the data into the output sections.
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It must build an output symbol table including any local
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symbols from the input files and the global symbols from the
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hash table. When producing relocatable output, it must
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modify the input relocs and write them into the output file.
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There may also be object format dependent work to be done.
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</p>
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<p>The linker will also call the <code>write_object_contents</code> entry
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point when the BFD is closed. The two entry points must work
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together in order to produce the correct output file.
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</p>
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<p>The details of how this works are inevitably dependent upon
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the specific object file format. The a.out
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<code>_bfd_final_link</code> routine is <code>NAME(aout,final_link)</code>.
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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="Information-provided-by-the-linker.html#Information-provided-by-the-linker" accesskey="1">Information provided by the linker</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Relocating-the-section-contents.html#Relocating-the-section-contents" accesskey="2">Relocating the section contents</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Writing-the-symbol-table.html#Writing-the-symbol-table" accesskey="3">Writing the symbol table</a>:</td><td> </td><td align="left" valign="top">
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</td></tr>
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</table>
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</body>
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</html>
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