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Date:      Tue, 17 Dec 2019 14:55:08 -0800
From:      John Baldwin <jhb@FreeBSD.org>
To:        freebsd-sparc64@freebsd.org
Subject:   Re: Sparc64 and FreeBSD 13.0
Message-ID:  <411df638-0f12-81af-eca7-181af93f0230@FreeBSD.org>
In-Reply-To: <20191205035843.GA3392@lonesome.com>
References:  <CAPyFy2CxrOLx9RtA9hA6ou7gb5d-uqvJjCSXVYOoojt37%2Bs%2B9A@mail.gmail.com> <CAPyFy2DJeHB%2BFdnagoVmxMwUGp92YMNSU9Kg7E4n-x55MUvFhA@mail.gmail.com> <20191203181148.GA24129@lonesome.com> <D91A6BEA-ED7B-4352-AC68-A0856158BEE3@distal.com> <20495159-605f-c0eb-bd26-4daaab2024a2@sorbs.net> <CAGuhNT3=fGkgEpHK066g-oQj%2BJUYfWPkYRee3tXG65zAN=bq_Q@mail.gmail.com> <CAK3Ucu6%2BkVpsuR-ZVHSURJe_32Dg6_kwRn69jyD-NxO=UsrL3g@mail.gmail.com> <20191205035843.GA3392@lonesome.com>

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On 12/4/19 7:58 PM, Mark Linimon wrote:
> On Wed, Dec 04, 2019 at 05:34:46PM -0600, Joe Kozak wrote:
>> I put my vote of support in for someone doing some updating if
>> possible.
> 
> Unfortunately it doesn't work like that in volunteer projects.
> 
> I estimate it would take 1-3 months to fix the toolchain -- which
> would only save us the existing systems (manufactured up to 2005).
> When I last looked at sun4v (the newer systems) I estimated 3-5
> months.
> 
> That's full-time activity from someone who *used* to do systems
> work, but has not for many years, and would have to come up to
> speed on 18 zillion things.
> 
> mcl
> 
> (fwiw I am a software engineer, ergo, my estimates suck.)

Fixing the toolchain is probably less than 1-3 months.

I have a freebsd-gcc9 port that I haven't posted for review yet, but
it hits the same snag (assertion failure in ld.bfd) that freebsd-gcc6
hits.  I think the assertion failure is wrong and needs to use >=
instead of >, but I just haven't sat down and looked at it in a
debugger to see the exact values at the time of the assertion failure.

However, I think even once you get it building there might be a few
more bumps with getting things like PCPU_* working in the kernel
correctly.  I probably won't get to it anytime soon, and sparc64
really needs multiple active folks to keep it viable.

-- 
John Baldwin



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