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RE: Question on -mips switch for MIPS processor


You can't run -mips4 binaries on R4000 mips-sgi-irix 

By default, recent versions of gcc generate mips4 binaries when compiled on
irix-6.5 based mips4 machines.  These don't run on my R4400 Indigo2.  

I submitted a patch for this
http://gcc.gnu.org/ml/gcc-patches/1999-06/msg00562.html but it didn't make
it 

+++++++++++++++++++++++++++++++++++++++++
(Mr) David Billinghurst
Comalco Research Centre
PO Box 316, Thomastown, Vic, Australia, 3074
Phone:	+61 3 9469 0642
FAX:	+61 3 9462 2700
Email:	David.Billinghurst@riotinto.com.au




> -----Original Message-----
> From:	kenner@vlsi1.ultra.nyu.edu [SMTP:kenner@vlsi1.ultra.nyu.edu]
> Sent:	Wednesday, 19 January 2000 7:35
> To:	gcc@gcc.gnu.org
> Subject:	Question on -mips switch for MIPS processor
> 
> Why does -mips3 default to -mabi=64?
> 
> Just because somebody has a processor that has those instructions doesn't
> mean they want to use the 64-bit ABI.  You can interoperate binaries
> between the different values of the -mips switch, but not -mabi.
> 
> So it would seem to me that the -mips value should not affect the
> -mabi value at all.
> 
> What do others think?

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