<html lang="en">
<head>
<title>mmo - 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="BFD-back-ends.html#BFD-back-ends" title="BFD back ends">
<link rel="prev" href="elf.html#elf" title="elf">
<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="mmo"></a>
<p>
Previous:&nbsp;<a rel="previous" accesskey="p" href="elf.html#elf">elf</a>,
Up:&nbsp;<a rel="up" accesskey="u" href="BFD-back-ends.html#BFD-back-ends">BFD back ends</a>
<hr>
</div>

<h3 class="section">3.5 mmo backend</h3>

<p>The mmo object format is used exclusively together with Professor
Donald E. Knuth's educational 64-bit processor MMIX.  The simulator
<samp><span class="command">mmix</span></samp> which is available at
<a href="http://mmix.cs.hm.edu/src/index.html">http://mmix.cs.hm.edu/src/index.html</a>
understands this format.  That package also includes a combined
assembler and linker called <samp><span class="command">mmixal</span></samp>.  The mmo format has
no advantages feature-wise compared to e.g. ELF.  It is a simple
non-relocatable object format with no support for archives or
debugging information, except for symbol value information and
line numbers (which is not yet implemented in BFD).  See
<a href="http://mmix.cs.hm.edu/">http://mmix.cs.hm.edu/</a> for more
information about MMIX.  The ELF format is used for intermediate
object files in the BFD implementation.

<!-- We want to xref the symbol table node.  A feature in "chew" -->
<!-- requires that "commands" do not contain spaces in the -->
<!-- arguments.  Hence the hyphen in "Symbol-table". -->
<ul class="menu">
<li><a accesskey="1" href="File-layout.html#File-layout">File layout</a>
<li><a accesskey="2" href="Symbol_002dtable.html#Symbol_002dtable">Symbol-table</a>
<li><a accesskey="3" href="mmo-section-mapping.html#mmo-section-mapping">mmo section mapping</a>
</ul>

   </body></html>