Re: powerpc-eabi-gcc compatible with Diab-Data CC ?

[Jeff Bevis <jab at applied-magic dot com>]

Hi Christian,

We've done essentially that with our PPC403 software.  There are
many issues to deal with, but I can say that it does in fact use R2 and
R13 for the same purpose as Diab's compiler.   We use the
following compiler options:

 -meabi -mcpu=403 -mregnames\
 -msoft-float -mmultiple -mbig-endian -msdata=eabi -c
-fno-common\
 -Wall -Wno-format -Wno-parentheses -Wno-main -fno-builtin 

The important one is -meabi, so you get eabi register usage like
Diab.  Feel free to email me any other questions you have;  it
took us a long time to migrate successfully from Diab to GCC, and I'd be
glad to help.

At 10:51 AM 8/18/00 -0400, Netter, Christian
M.      UTRC wrote:

> Hi, 
>
> I'm interested in using a powerpc-eabi-gcc 
> with object files produced by the Diab-Data CC 
> on a MPC555 platform. 
>
> Does anybody know if that's possible? 
>
> If so, what command line options do I need to 
> supply to GCC? 
>
> I found I 1997 post to this list in which 
> someone seems to indicate that he's done that. 
>
> (looking at the .s output of my powerpc-eabi-gcc,
> it doesn't seem to use registers R2 and R13 to 
> access sections .sdata and .sbss like the Diab 
> compiler does.....doesn't look very compatible 
> to me.....) 
>
> Anybody? 
>
> Christian M. Netter 
> Associate Research Engineer 
> United Technologies Research Center 
> 411 Silver Lane, M/S 129-55 
> East Hartford, CT. 06108 
> E-Mail: nettercm@utrc.utc.com 
> Phone:  (860)-610-7758 
>   


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