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84 lines
3.9 KiB
HTML
84 lines
3.9 KiB
HTML
4 years ago
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<title>Performing the Final Link - Untitled</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Untitled">
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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="Linker-Functions.html#Linker-Functions" title="Linker Functions">
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<link rel="prev" href="Adding-Symbols-to-the-Hash-Table.html#Adding-Symbols-to-the-Hash-Table" title="Adding Symbols to the Hash Table">
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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 BFD library.
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Copyright (C) 1991-2015 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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--></style>
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</head>
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<body>
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<div class="node">
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<a name="Performing-the-Final-Link"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="Adding-Symbols-to-the-Hash-Table.html#Adding-Symbols-to-the-Hash-Table">Adding Symbols to the Hash Table</a>,
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Up: <a rel="up" accesskey="u" href="Linker-Functions.html#Linker-Functions">Linker Functions</a>
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<hr>
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</div>
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<h4 class="subsection">2.17.3 Performing the final link</h4>
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<p><a name="index-g_t_005fbfd_005flink_005ffinal_005flink-in-target-vector-2346"></a><a name="index-target-vector-_0028_005fbfd_005ffinal_005flink_0029-2347"></a>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>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>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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<ul class="menu">
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<li><a accesskey="1" href="Information-provided-by-the-linker.html#Information-provided-by-the-linker">Information provided by the linker</a>
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<li><a accesskey="2" href="Relocating-the-section-contents.html#Relocating-the-section-contents">Relocating the section contents</a>
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<li><a accesskey="3" href="Writing-the-symbol-table.html#Writing-the-symbol-table">Writing the symbol table</a>
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</ul>
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</body></html>
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