[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <CAH8yC8nqbLd6WvPKeMDvGNwRPD7j47Mr66n7ajcYi_XxGe6bKQ@mail.gmail.com>
Date: Mon, 1 Jun 2020 22:09:38 -0400
From: Jeffrey Walton <noloader@...il.com>
To: musl@...ts.openwall.com
Cc: Daniel Kolesa <daniel@...aforge.org>, Joseph Myers <joseph@...esourcery.com>,
Will Springer <skirmisher@...tonmail.com>, libc-alpha@...rceware.org, eery@...erfox.es,
Palmer Dabbelt via binutils <binutils@...rceware.org>, via libc-dev <libc-dev@...ts.llvm.org>,
linuxppc-dev@...ts.ozlabs.org
Subject: Re: Re: ppc64le and 32-bit LE userland compatibility
On Mon, Jun 1, 2020 at 9:58 PM Segher Boessenkool
<segher@...nel.crashing.org> wrote:
>
> On Tue, Jun 02, 2020 at 01:26:37AM +0200, Daniel Kolesa wrote:
> > On Mon, Jun 1, 2020, at 23:28, Joseph Myers wrote:
> > Are you sure this would be a new port? Glibc already works in this combination, as it seems to me it'd be best if it was just a variant of the existing 32-bit PowerPC port, sharing most conventions besides endianness with the BE port.
>
> That's right. Except it isn't an "official" existing port, never has
> been "officially" supported.
>
> > 128-bit IEEE long double would not work, since that relies on VSX being present (gcc will explicitly complain if it's not). I'd be all for using 64-bit long double, though (musl already does, on all ppc ports).
>
> The current IEEE QP float support requires VSX for its emulation, yes
> (possibly even Power8?) ...
I believe Steven Munroe has an implementation that includes emulation
for lesser POWER architectures at
https://github.com/munroesj52/pveclib. If I am not mistaken, Munroe 's
library supports back to POWER7.
Modern GCC is fine. Clang has problems because it lacks support for
ISO/IEC TS 18661 or N2341
(http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2341.pdf).
Jeff
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
