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.