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Re: machine types for MIPS in ELF file

To: Jun Sun <jsun@mvista.com>
Subject: Re: machine types for MIPS in ELF file
From: "Steven J. Hill" <sjhill@cotw.com>
Date: Wed, 09 May 2001 07:04:48 -0500
Cc: linux-mips@oss.sgi.com
References: <3AF843F7.72BC47F0@mvista.com>
Reply-to: sjhill@cotw.com
Sender: owner-linux-mips@oss.sgi.com
Jun Sun wrote:
> 
> The e_machine field in ELF file standard defines two values for MIPS:
> 
> 8       - MIPS RS3000 BE
> 10      - MIPS RS4000 BE
> 
> Naturally the question is: what about LE binaries?  And what about other
> CPUs?  Is there any effort to clean up this thing?
> 
> All the tools that I know of are using 8, pretty much for all CPUs and both
> endians.  No real harm has been observed, but it causes some anonying "invalid
> byte order" complains if you do "file" on a MIPS LE binary.  Of course, it
> will also invariably reports "R3000" cpu as well.
> 
This has bothered me as well. I would like to see a few machines added
at least something like R5000, R8000, R10000 along with the proper ISA
value being stored in the e_flags field. I would be more than happy to
help make the changes as it is something that IMHO needs to be fixed.

As far as the latest ABI specs go, here are 2 different links for the
same documents. Ralf and I went digging for these a few weeks back.

    http://www.sco.com/partners/developer/devspecs/
    http://www.linuxbase.org/spec/refspecs/

-Steve

-- 
 Steven J. Hill - Embedded SW Engineer
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