You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
4.8 KiB
HTML
104 lines
4.8 KiB
HTML
4 years ago
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
|
|
<html>
|
||
|
|
<!-- This file documents the BFD library.
|
||
|
|
|
||
|
|
Copyright (C) 1991-2019 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
Permission is granted to copy, distribute and/or modify this document
|
||
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
||
|
|
any later version published by the Free Software Foundation; with the
|
||
|
|
Invariant Sections being "GNU General Public License" and "Funding
|
||
|
|
Free Software", the Front-Cover texts being (a) (see below), and with
|
||
|
|
the Back-Cover Texts being (b) (see below). A copy of the license is
|
||
|
|
included in the section entitled "GNU Free Documentation License".
|
||
|
|
|
||
|
|
(a) The FSF's Front-Cover Text is:
|
||
|
|
|
||
|
|
A GNU Manual
|
||
|
|
|
||
|
|
(b) The FSF's Back-Cover Text is:
|
||
|
|
|
||
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
||
|
|
software. Copies published by the Free Software Foundation raise
|
||
|
|
funds for GNU development. -->
|
||
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
||
|
|
<head>
|
||
|
|
<title>Information provided by the linker (Untitled Document)</title>
|
||
|
|
|
||
|
|
<meta name="description" content="Information provided by the linker (Untitled Document)">
|
||
|
|
<meta name="keywords" content="Information provided by the linker (Untitled Document)">
|
||
|
|
<meta name="resource-type" content="document">
|
||
|
|
<meta name="distribution" content="global">
|
||
|
|
<meta name="Generator" content="makeinfo">
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<link href="index.html#Top" rel="start" title="Top">
|
||
|
|
<link href="BFD-Index.html#BFD-Index" rel="index" title="BFD Index">
|
||
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
||
|
|
<link href="Performing-the-Final-Link.html#Performing-the-Final-Link" rel="up" title="Performing the Final Link">
|
||
|
|
<link href="Relocating-the-section-contents.html#Relocating-the-section-contents" rel="next" title="Relocating the section contents">
|
||
|
|
<link href="Performing-the-Final-Link.html#Performing-the-Final-Link" rel="prev" title="Performing the Final Link">
|
||
|
|
<style type="text/css">
|
||
|
|
<!--
|
||
|
|
a.summary-letter {text-decoration: none}
|
||
|
|
blockquote.indentedblock {margin-right: 0em}
|
||
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
||
|
|
blockquote.smallquotation {font-size: smaller}
|
||
|
|
div.display {margin-left: 3.2em}
|
||
|
|
div.example {margin-left: 3.2em}
|
||
|
|
div.lisp {margin-left: 3.2em}
|
||
|
|
div.smalldisplay {margin-left: 3.2em}
|
||
|
|
div.smallexample {margin-left: 3.2em}
|
||
|
|
div.smalllisp {margin-left: 3.2em}
|
||
|
|
kbd {font-style: oblique}
|
||
|
|
pre.display {font-family: inherit}
|
||
|
|
pre.format {font-family: inherit}
|
||
|
|
pre.menu-comment {font-family: serif}
|
||
|
|
pre.menu-preformatted {font-family: serif}
|
||
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smallexample {font-size: smaller}
|
||
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smalllisp {font-size: smaller}
|
||
|
|
span.nolinebreak {white-space: nowrap}
|
||
|
|
span.roman {font-family: initial; font-weight: normal}
|
||
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
||
|
|
ul.no-bullet {list-style: none}
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body lang="en">
|
||
|
|
<a name="Information-provided-by-the-linker"></a>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="Relocating-the-section-contents.html#Relocating-the-section-contents" accesskey="n" rel="next">Relocating the section contents</a>, Previous: <a href="Performing-the-Final-Link.html#Performing-the-Final-Link" accesskey="p" rel="prev">Performing the Final Link</a>, Up: <a href="Performing-the-Final-Link.html#Performing-the-Final-Link" accesskey="u" rel="up">Performing the Final Link</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>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
<a name="Information-provided-by-the-linker-1"></a>
|
||
|
|
<h4 class="subsubsection">2.17.3.1 Information provided by the linker</h4>
|
||
|
|
<p>Before the linker calls the <code>_bfd_final_link</code> entry point,
|
||
|
|
it sets up some data structures for the function to use.
|
||
|
|
</p>
|
||
|
|
<p>The <code>input_bfds</code> field of the <code>bfd_link_info</code> structure
|
||
|
|
will point to a list of all the input files included in the
|
||
|
|
link. These files are linked through the <code>link.next</code> field
|
||
|
|
of the <code>bfd</code> structure.
|
||
|
|
</p>
|
||
|
|
<p>Each section in the output file will have a list of
|
||
|
|
<code>link_order</code> structures attached to the <code>map_head.link_order</code>
|
||
|
|
field (the <code>link_order</code> structure is defined in
|
||
|
|
<code>bfdlink.h</code>). These structures describe how to create the
|
||
|
|
contents of the output section in terms of the contents of
|
||
|
|
various input sections, fill constants, and, eventually, other
|
||
|
|
types of information. They also describe relocs that must be
|
||
|
|
created by the BFD backend, but do not correspond to any input
|
||
|
|
file; this is used to support -Ur, which builds constructors
|
||
|
|
while generating a relocatable object file.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|