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Re: gcc support for mips32 release 2]

To: linux-mips@linux-mips.org
Subject: Re: gcc support for mips32 release 2]
From: Eric Christopher <echristo@redhat.com>
Date: Fri, 05 Mar 2004 14:29:38 -0800
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
More on the thread from Chris since it was cross posted to gcc@ as well.

-eric

-----Forwarded Message-----
> From: cgd@broadcom.com
> To: long21st@yahoo.com
> Cc: gcc@gcc.gnu.org
> Subject: Re: gcc support for mips32 release 2
> Date: Fri, 05 Mar 2004 08:19:08 -0800
> 
> At Fri, 5 Mar 2004 07:54:19 +0000 (UTC), "Long Li" wrote:
> > I have a question about gcc support for mips32 release
> > 2. I noticed that in gnu as(assembler) 2.14, there is
> > an option for it, but does newest gcc version support
> > mips32 release 2? I did not find it in the mips.c or
> > configure file. 
> 
> as others have noted, I contributed it to GCC and it should appear in
> 3.4.
> 
> Note that 3.4 has only partial support for the new instructions.  In
> particular, it only knows how to generate rotates and, IIRC, some of
> the sign-extend instructions.  (it's been a while since i did the
> work.)
> 
> It does *not* know how to do use the insert/extract instructions.
> 
> 
> If anybody knows of a MIPS64 release 2 implementation, I also have
> support for GCC to do that.  (Problem is, the way the GCC MIPS
> back-end currently is, it really wants a processor implementation
> before a new ISA is added.)
> 
> I also have a number of sim changes for 32r2 -- can't remember if i've
> integrated all of them or not, yet -- and 64r2.  (Fairly sure i've not
> done the 64r2 changes.)
> 
> 
> 
> chris
-- 
Eric Christopher <echristo@redhat.com>


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