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.
89 lines
3.6 KiB
HTML
89 lines
3.6 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Section Input - Untitled</title>
|
|
<meta http-equiv="Content-Type" content="text/html">
|
|
<meta name="description" content="Untitled">
|
|
<meta name="generator" content="makeinfo 4.13">
|
|
<link title="Top" rel="start" href="index.html#Top">
|
|
<link rel="up" href="Sections.html#Sections" title="Sections">
|
|
<link rel="prev" href="Sections.html#Sections" title="Sections">
|
|
<link rel="next" href="Section-Output.html#Section-Output" title="Section Output">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
This file documents the BFD library.
|
|
|
|
Copyright (C) 1991-2015 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.-->
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
|
<style type="text/css"><!--
|
|
pre.display { font-family:inherit }
|
|
pre.format { font-family:inherit }
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
|
pre.smallexample { font-size:smaller }
|
|
pre.smalllisp { font-size:smaller }
|
|
span.sc { font-variant:small-caps }
|
|
span.roman { font-family:serif; font-weight:normal; }
|
|
span.sansserif { font-family:sans-serif; font-weight:normal; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
<div class="node">
|
|
<a name="Section-Input"></a>
|
|
<p>
|
|
Next: <a rel="next" accesskey="n" href="Section-Output.html#Section-Output">Section Output</a>,
|
|
Previous: <a rel="previous" accesskey="p" href="Sections.html#Sections">Sections</a>,
|
|
Up: <a rel="up" accesskey="u" href="Sections.html#Sections">Sections</a>
|
|
<hr>
|
|
</div>
|
|
|
|
<h4 class="subsection">2.6.1 Section input</h4>
|
|
|
|
<p>When a BFD is opened for reading, the section structures are
|
|
created and attached to the BFD.
|
|
|
|
<p>Each section has a name which describes the section in the
|
|
outside world—for example, <code>a.out</code> would contain at least
|
|
three sections, called <code>.text</code>, <code>.data</code> and <code>.bss</code>.
|
|
|
|
<p>Names need not be unique; for example a COFF file may have several
|
|
sections named <code>.data</code>.
|
|
|
|
<p>Sometimes a BFD will contain more than the “natural” number of
|
|
sections. A back end may attach other sections containing
|
|
constructor data, or an application may add a section (using
|
|
<code>bfd_make_section</code>) to the sections attached to an already open
|
|
BFD. For example, the linker creates an extra section
|
|
<code>COMMON</code> for each input file's BFD to hold information about
|
|
common storage.
|
|
|
|
<p>The raw data is not necessarily read in when
|
|
the section descriptor is created. Some targets may leave the
|
|
data in place until a <code>bfd_get_section_contents</code> call is
|
|
made. Other back ends may read in all the data at once. For
|
|
example, an S-record file has to be read once to determine the
|
|
size of the data. An IEEE-695 file doesn't contain raw data in
|
|
sections, but data and relocation expressions intermixed, so
|
|
the data area has to be parsed to get out the data and
|
|
relocations.
|
|
|
|
</body></html>
|
|
|