big-endian loader for little-endian machine

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Article #501

#501

From: Eric James Ewanco
Date: Wed, 14 Oct 1992 18:48

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I am trying to use GNU to produce executable files for an embedded system
(which reads a.out files).  The host is a little-endian MIPS (DS3100).  The
target is 68030.

Unfortunately I discovered that GNU ld appears to be fixed in endian; it 
assumes that it will run on the same endian machine as the target.  Is there
a version of GNU ld that has configurable endian?  The .o files produced by
gas are big-endian in format, and ld gets confused because it assumes the
endian of the .o files is the endian of the machine.

Therefore the loader needs to swap bytes in every word it reads from the
structure that it wants to understand.

Any help would be greatly appreciated.

Thanks
Eric
ewanco@kalvin.enet.dec.com
--
/===========================================================================\
| Eric Ewanco - Software Engineer   For the rash and outrageous opinions ex-|
| Digital Equipment, Maynard MA     pressed herein I alone am responsible;  |
| ewanco@kalvin.enet.dec.com        they do not belong to DIGITAL(TM).      |
\==========================- 2 Th 2:15 -====================================/

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Message-ID: <1992Oct14.184802.19669@engage.pko.dec.com>

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Path: arc1-ca.pugleaf.net!sparky!uunet!ferkel.ucsb.edu!taco!gatech!rpi!zaphod.mps.ohio-state.edu!cs.utexas.edu!sun-barr!ames!elroy.jpl.nasa.gov!decwrl!pa.dec.com!engage.pko.dec.com!irenaeus.mlo.dec.com!eje
From: eje@irenaeus.mlo.dec.com (Eric James Ewanco)
Subject: big-endian loader for little-endian machine
Message-ID: <1992Oct14.184802.19669@engage.pko.dec.com>
Sender: newsdaemon@engage.pko.dec.com (USENET News Daemon)
Reply-To: ewanco@kalvin.enet.dec.com
Organization: Digital Equipment Corporation
Date: Wed, 14 Oct 1992 18:48:02 GMT
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