From mboxrd@z Thu Jan  1 00:00:00 1970
From: mrs@wrs.com (Mike Stump)
To: egcs@cygnus.com, frichard@bbn.com
Subject: Re: sparc64 support for Solaris
Date: Fri, 17 Oct 1997 19:31:00 -0000
Message-id: <199710180213.TAA25990@kankakee.wrs.com>
X-SW-Source: 1997-10/msg00771.html

> Date: Fri, 17 Oct 1997 19:51:35 -0400
> From: Fred Richardson <frichard@bbn.com>

> I was wondering how I can enable 64 bit support and v9 instruction
> scheduling for an Ultra 1 Model 170 running Solaris2.5.  This is
> apparently not possible when the target is "sparc-sun-solaris2.5.1".

> I thought I'd try specifying "sparc64-sun-elf".  But I don't know if
> this makes any sense.  Does anyone have any suggestions?

from sparc.c:

    /* "v9" is used to specify a true 64 bit architecture.
       "v8plus" is what Sun calls Solaris2 running on UltraSPARC's.  */
    { "v8plus",     PROCESSOR_V8PLUS, MASK_ISA, MASK_V9 },

Now, do you want to help us, and submit changes to the doc that
document this better so that next time we can say RTFM?  ;-)

-mcpu=v8plus should work.