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.
162 lines
6.0 KiB
HTML
162 lines
6.0 KiB
HTML
15 years ago
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>Formats - Untitled</title>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html">
|
||
|
|
<meta name="description" content="Untitled">
|
||
|
|
<meta name="generator" content="makeinfo 4.7">
|
||
|
|
<link title="Top" rel="start" href="index.html#Top">
|
||
|
|
<link rel="up" href="BFD-front-end.html#BFD-front-end" title="BFD front end">
|
||
|
|
<link rel="prev" href="Archives.html#Archives" title="Archives">
|
||
|
|
<link rel="next" href="Relocations.html#Relocations" title="Relocations">
|
||
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
||
|
|
<!--
|
||
|
|
This file documents the BFD library.
|
||
|
|
|
||
|
|
Copyright (C) 1991, 2000, 2001, 2003, 2006, 2007 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 1.1 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; }
|
||
|
|
--></style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="node">
|
||
|
|
<p>
|
||
|
|
<a name="Formats"></a>Next: <a rel="next" accesskey="n" href="Relocations.html#Relocations">Relocations</a>,
|
||
|
|
Previous: <a rel="previous" accesskey="p" href="Archives.html#Archives">Archives</a>,
|
||
|
|
Up: <a rel="up" accesskey="u" href="BFD-front-end.html#BFD-front-end">BFD front end</a>
|
||
|
|
<hr><br>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<h3 class="section">2.9 File formats</h3>
|
||
|
|
|
||
|
|
<p>A format is a BFD concept of high level file contents type. The
|
||
|
|
formats supported by BFD are:
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><code>bfd_object</code>
|
||
|
|
</ul>
|
||
|
|
The BFD may contain data, symbols, relocations and debug info.
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><code>bfd_archive</code>
|
||
|
|
</ul>
|
||
|
|
The BFD contains other BFDs and an optional index.
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><code>bfd_core</code>
|
||
|
|
</ul>
|
||
|
|
The BFD contains the result of an executable core dump.
|
||
|
|
|
||
|
|
<h4 class="subsection">2.9.1 File format functions</h4>
|
||
|
|
|
||
|
|
<p><a name="index-bfd_005fcheck_005fformat-76"></a>
|
||
|
|
|
||
|
|
<h5 class="subsubsection">2.9.1.1 <code>bfd_check_format</code></h5>
|
||
|
|
|
||
|
|
<p><strong>Synopsis</strong>
|
||
|
|
<pre class="example"> bfd_boolean bfd_check_format (bfd *abfd, bfd_format format);
|
||
|
|
</pre>
|
||
|
|
<p><strong>Description</strong><br>
|
||
|
|
Verify if the file attached to the BFD <var>abfd</var> is compatible
|
||
|
|
with the format <var>format</var> (i.e., one of <code>bfd_object</code>,
|
||
|
|
<code>bfd_archive</code> or <code>bfd_core</code>).
|
||
|
|
|
||
|
|
<p>If the BFD has been set to a specific target before the
|
||
|
|
call, only the named target and format combination is
|
||
|
|
checked. If the target has not been set, or has been set to
|
||
|
|
<code>default</code>, then all the known target backends is
|
||
|
|
interrogated to determine a match. If the default target
|
||
|
|
matches, it is used. If not, exactly one target must recognize
|
||
|
|
the file, or an error results.
|
||
|
|
|
||
|
|
<p>The function returns <code>TRUE</code> on success, otherwise <code>FALSE</code>
|
||
|
|
with one of the following error codes:
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><code>bfd_error_invalid_operation</code> -
|
||
|
|
if <code>format</code> is not one of <code>bfd_object</code>, <code>bfd_archive</code> or
|
||
|
|
<code>bfd_core</code>.
|
||
|
|
|
||
|
|
<li><code>bfd_error_system_call</code> -
|
||
|
|
if an error occured during a read - even some file mismatches
|
||
|
|
can cause bfd_error_system_calls.
|
||
|
|
|
||
|
|
<li><code>file_not_recognised</code> -
|
||
|
|
none of the backends recognised the file format.
|
||
|
|
|
||
|
|
<li><code>bfd_error_file_ambiguously_recognized</code> -
|
||
|
|
more than one backend recognised the file format.
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
<p><a name="index-bfd_005fcheck_005fformat_005fmatches-77"></a>
|
||
|
|
|
||
|
|
<h5 class="subsubsection">2.9.1.2 <code>bfd_check_format_matches</code></h5>
|
||
|
|
|
||
|
|
<p><strong>Synopsis</strong>
|
||
|
|
<pre class="example"> bfd_boolean bfd_check_format_matches
|
||
|
|
(bfd *abfd, bfd_format format, char ***matching);
|
||
|
|
</pre>
|
||
|
|
<p><strong>Description</strong><br>
|
||
|
|
Like <code>bfd_check_format</code>, except when it returns FALSE with
|
||
|
|
<code>bfd_errno</code> set to <code>bfd_error_file_ambiguously_recognized</code>. In that
|
||
|
|
case, if <var>matching</var> is not NULL, it will be filled in with
|
||
|
|
a NULL-terminated list of the names of the formats that matched,
|
||
|
|
allocated with <code>malloc</code>.
|
||
|
|
Then the user may choose a format and try again.
|
||
|
|
|
||
|
|
<p>When done with the list that <var>matching</var> points to, the caller
|
||
|
|
should free it.
|
||
|
|
|
||
|
|
<p><a name="index-bfd_005fset_005fformat-78"></a>
|
||
|
|
|
||
|
|
<h5 class="subsubsection">2.9.1.3 <code>bfd_set_format</code></h5>
|
||
|
|
|
||
|
|
<p><strong>Synopsis</strong>
|
||
|
|
<pre class="example"> bfd_boolean bfd_set_format (bfd *abfd, bfd_format format);
|
||
|
|
</pre>
|
||
|
|
<p><strong>Description</strong><br>
|
||
|
|
This function sets the file format of the BFD <var>abfd</var> to the
|
||
|
|
format <var>format</var>. If the target set in the BFD does not
|
||
|
|
support the format requested, the format is invalid, or the BFD
|
||
|
|
is not open for writing, then an error occurs.
|
||
|
|
|
||
|
|
<p><a name="index-bfd_005fformat_005fstring-79"></a>
|
||
|
|
|
||
|
|
<h5 class="subsubsection">2.9.1.4 <code>bfd_format_string</code></h5>
|
||
|
|
|
||
|
|
<p><strong>Synopsis</strong>
|
||
|
|
<pre class="example"> const char *bfd_format_string (bfd_format format);
|
||
|
|
</pre>
|
||
|
|
<p><strong>Description</strong><br>
|
||
|
|
Return a pointer to a const string
|
||
|
|
<code>invalid</code>, <code>object</code>, <code>archive</code>, <code>core</code>, or <code>unknown</code>,
|
||
|
|
depending upon the value of <var>format</var>.
|
||
|
|
|
||
|
|
</body></html>
|
||
|
|
|