blob: 1c95d9c75bbf093fcb41eaaab1c4c0c80781e228 [file] [log] [blame]
<html lang="en">
<head>
<title>Overview - STABS</title>
<meta http-equiv="Content-Type" content="text/html">
<meta name="description" content="STABS">
<meta name="generator" content="makeinfo 4.13">
<link title="Top" rel="start" href="index.html#Top">
<link rel="prev" href="index.html#Top" title="Top">
<link rel="next" href="Program-Structure.html#Program-Structure" title="Program Structure">
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
<!--
Copyright (C) 1992-2019 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon,
and David MacKenzie.
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 no
Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
Texts. A copy of the license is included in the section entitled ``GNU
Free Documentation License''.-->
<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>
<h1 class="settitle">STABS</h1>
<div class="node">
<a name="Overview"></a>
<p>
Next:&nbsp;<a rel="next" accesskey="n" href="Program-Structure.html#Program-Structure">Program Structure</a>,
Previous:&nbsp;<a rel="previous" accesskey="p" href="index.html#Top">Top</a>,
Up:&nbsp;<a rel="up" accesskey="u" href="index.html#Top">Top</a>
<hr>
</div>
<h2 class="chapter">1 Overview of Stabs</h2>
<p><dfn>Stabs</dfn> refers to a format for information that describes a program
to a debugger. This format was apparently invented by
Peter Kessler at
the University of California at Berkeley, for the <code>pdx</code> Pascal
debugger; the format has spread widely since then.
<p>This document is one of the few published sources of documentation on
stabs. It is believed to be comprehensive for stabs used by C. The
lists of symbol descriptors (see <a href="Symbol-Descriptors.html#Symbol-Descriptors">Symbol Descriptors</a>) and type
descriptors (see <a href="Type-Descriptors.html#Type-Descriptors">Type Descriptors</a>) are believed to be completely
comprehensive. Stabs for COBOL-specific features and for variant
records (used by Pascal and Modula-2) are poorly documented here.
<!-- FIXME: Need to document all OS9000 stuff in GDB; see all references -->
<!-- to os9k_stabs in stabsread.c. -->
<p>Other sources of information on stabs are <cite>Dbx and Dbxtool
Interfaces</cite>, 2nd edition, by Sun, 1988, and <cite>AIX Version 3.2 Files
Reference</cite>, Fourth Edition, September 1992, "dbx Stabstring Grammar" in
the a.out section, page 2-31. This document is believed to incorporate
the information from those two sources except where it explicitly directs
you to them for more information.
<ul class="menu">
<li><a accesskey="1" href="Flow.html#Flow">Flow</a>: Overview of debugging information flow
<li><a accesskey="2" href="Stabs-Format.html#Stabs-Format">Stabs Format</a>: Overview of stab format
<li><a accesskey="3" href="String-Field.html#String-Field">String Field</a>: The string field
<li><a accesskey="4" href="C-Example.html#C-Example">C Example</a>: A simple example in C source
<li><a accesskey="5" href="Assembly-Code.html#Assembly-Code">Assembly Code</a>: The simple example at the assembly level
</ul>
</body></html>