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Message-ID: <20200602174748.GS31009@gate.crashing.org>
Date: Tue, 2 Jun 2020 12:47:48 -0500
From: Segher Boessenkool <segher@...nel.crashing.org>
To: Joseph Myers <joseph@...esourcery.com>
Cc: libc-alpha@...rceware.org, eery@...erfox.es,
Daniel Kolesa <daniel@...aforge.org>, musl@...ts.openwall.com,
Will Springer <skirmisher@...tonmail.com>,
Palmer Dabbelt via binutils <binutils@...rceware.org>,
via libc-dev <libc-dev@...ts.llvm.org>, linuxppc-dev@...ts.ozlabs.org
Subject: Re: ppc64le and 32-bit LE userland compatibility
On Tue, Jun 02, 2020 at 01:50:32PM +0000, Joseph Myers wrote:
> On Mon, 1 Jun 2020, Segher Boessenkool wrote:
>
> > > The supported glibc ABIs are listed at
> > > <https://sourceware.org/glibc/wiki/ABIList>.
> >
> > powerpcle-linux already does work somewhat, and that should also he
> > worth something, official or not ;-)
> >
> > (It has worked for very many years already... That is, I have built it
> > a lot, I have no idea about running a full distro that way).
>
> Greg McGary's patches as referenced at
> <https://sourceware.org/legacy-ml/libc-hacker/2006-11/msg00013.html> were
> never merged, and I don't know how big the changes to .S files were or if
> they were ever posted. Many files were subsequently fixed as part of
> bringing up support for powerpc64le, but without actual 32-bit LE testing
> as part of each release cycle there's not much evidence of correctness for
> LE of code not used for powerpc64le.
Yeah sorry, I meant I have built the toolchain parts a lot, not libc.
GCC and binutils. I reckon there is more work to do in libc, certainly
for configuration and similar.
Segher
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