90 lines
4.1 KiB
HTML
90 lines
4.1 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Symbols - 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="Sections.html#Sections" title="Sections">
|
|
<link rel="next" href="Archives.html#Archives" title="Archives">
|
|
<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="Symbols"></a>Next: <a rel="next" accesskey="n" href="Archives.html#Archives">Archives</a>,
|
|
Previous: <a rel="previous" accesskey="p" href="Sections.html#Sections">Sections</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">2.7 Symbols</h3>
|
|
|
|
<p>BFD tries to maintain as much symbol information as it can when
|
|
it moves information from file to file. BFD passes information
|
|
to applications though the <code>asymbol</code> structure. When the
|
|
application requests the symbol table, BFD reads the table in
|
|
the native form and translates parts of it into the internal
|
|
format. To maintain more than the information passed to
|
|
applications, some targets keep some information “behind the
|
|
scenes” in a structure only the particular back end knows
|
|
about. For example, the coff back end keeps the original
|
|
symbol table structure as well as the canonical structure when
|
|
a BFD is read in. On output, the coff back end can reconstruct
|
|
the output symbol table so that no information is lost, even
|
|
information unique to coff which BFD doesn't know or
|
|
understand. If a coff symbol table were read, but were written
|
|
through an a.out back end, all the coff specific information
|
|
would be lost. The symbol table of a BFD
|
|
is not necessarily read in until a canonicalize request is
|
|
made. Then the BFD back end fills in a table provided by the
|
|
application with pointers to the canonical information. To
|
|
output symbols, the application provides BFD with a table of
|
|
pointers to pointers to <code>asymbol</code>s. This allows applications
|
|
like the linker to output a symbol as it was read, since the “behind
|
|
the scenes” information will be still available.
|
|
|
|
<ul class="menu">
|
|
<li><a accesskey="1" href="Reading-Symbols.html#Reading-Symbols">Reading Symbols</a>
|
|
<li><a accesskey="2" href="Writing-Symbols.html#Writing-Symbols">Writing Symbols</a>
|
|
<li><a accesskey="3" href="Mini-Symbols.html#Mini-Symbols">Mini Symbols</a>
|
|
<li><a accesskey="4" href="typedef-asymbol.html#typedef-asymbol">typedef asymbol</a>
|
|
<li><a accesskey="5" href="symbol-handling-functions.html#symbol-handling-functions">symbol handling functions</a>
|
|
</ul>
|
|
|
|
</body></html>
|
|
|