From: Jakub Jelinek <jakub@redhat.com>
To: Richard Biener <richard.guenther@gmail.com>,
Florian Weimer <fweimer@redhat.com>,
GCC Development <gcc@gcc.gnu.org>,
Segher Boessenkool <segher@kernel.crashing.org>,
"fortran@gcc.gnu.org" <fortran@gcc.gnu.org>,
Tobias Burnus <tobias@codesourcery.com>
Subject: Re: libgfortran.so SONAME and powerpc64le-linux ABI changes
Date: Mon, 4 Oct 2021 14:31:41 +0200 [thread overview]
Message-ID: <20211004123141.GO304296@tucnak> (raw)
In-Reply-To: <20211004113656.GM304296@tucnak>
On Mon, Oct 04, 2021 at 01:36:56PM +0200, Jakub Jelinek via Gcc wrote:
> On Mon, Oct 04, 2021 at 01:24:05PM +0200, Richard Biener wrote:
> > > Your thoughts on this?
> >
> > How does glibc deal with this? There's a load of long double ABI in there.
>
> I don't know, CCing Florian; all I can see is that starting with glibc 2.26
> in addition to sin{f,,l} there is also sinf128, but dunno if glibc headers
> transparently map sinl to sinf128 or something else for the IEEE quad long
> double or what. But I believe glibc is like libstdc++ in that the same
> libc.so.6 is ABI compatible with both ABIs (well, also the one where
> long double is double, in that case I think glibc headers transparently
> remap sinl to sin etc.).
Carlos said it is the __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 stuff in
math.h etc., so I expect it is actually sinl -> __sinieee128 redirection
(using extern long double sinl (long double) __asm ("__sinieee128"); or so,
but through a lot of preprocessor macros).
Jakub
next prev parent reply other threads:[~2021-10-04 12:31 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-04 10:07 Jakub Jelinek
2021-10-04 11:24 ` Richard Biener
2021-10-04 11:36 ` Jakub Jelinek
2021-10-04 12:31 ` Jakub Jelinek [this message]
2021-10-04 14:14 ` Jakub Jelinek
2021-10-04 16:47 ` Joseph Myers
2021-10-04 18:33 ` Segher Boessenkool
2021-10-04 19:24 ` Joseph Myers
2021-10-05 17:43 ` Segher Boessenkool
2021-10-14 19:39 ` Bill Schmidt
2021-10-15 0:26 ` Segher Boessenkool
2021-10-05 20:16 ` Thomas Koenig
2021-10-05 21:54 ` Segher Boessenkool
2021-10-06 6:59 ` Thomas Koenig
2021-10-06 15:17 ` Segher Boessenkool
2021-10-06 15:41 ` Jakub Jelinek
2021-10-06 16:07 ` Segher Boessenkool
2021-10-06 16:34 ` Jakub Jelinek
2021-10-06 16:59 ` Segher Boessenkool
2021-10-06 17:07 ` Jakub Jelinek
2021-10-06 17:50 ` Segher Boessenkool
2021-10-06 19:30 ` Peter Bergner
2021-10-06 17:13 ` Joseph Myers
2021-10-06 18:39 ` Segher Boessenkool
2021-10-06 19:42 ` Joseph Myers
2021-10-06 20:57 ` Segher Boessenkool
2021-10-06 21:55 ` Joseph Myers
2021-10-06 22:03 ` Joseph Myers
2021-10-08 17:53 ` Segher Boessenkool
2021-10-11 20:11 ` Joseph Myers
2021-10-15 0:16 ` Segher Boessenkool
2021-10-06 15:42 ` David Edelsohn
2021-10-06 16:19 ` Segher Boessenkool
2021-10-06 17:38 ` David Edelsohn
2021-10-07 3:42 ` Michael Meissner
2021-10-08 21:10 ` Segher Boessenkool
2021-10-07 9:48 ` Alastair McKinstry
2021-10-07 9:56 ` Andreas Schwab
2021-10-07 10:01 ` Jakub Jelinek
2021-10-07 12:43 ` Alastair McKinstry
2021-10-05 21:53 ` Jonathan Wakely
2021-10-07 3:35 ` Michael Meissner
2021-10-07 6:08 ` Thomas Koenig
2021-10-07 9:40 ` Jakub Jelinek
2021-10-07 15:24 ` Michael Meissner
2021-10-07 15:33 ` Jakub Jelinek
2021-10-08 6:35 ` Thomas Koenig
2021-10-08 7:20 ` Iain Sandoe
2021-10-08 16:26 ` Thomas Koenig
2021-10-08 19:11 ` Iain Sandoe
2021-10-08 22:55 ` Thomas Koenig
2021-10-08 23:18 ` Iain Sandoe
2021-10-09 9:11 ` Thomas Koenig
2021-10-09 9:19 ` Iain Sandoe
2021-10-09 9:25 ` Jakub Jelinek
2021-10-09 7:44 ` Andreas Schwab
2021-10-10 16:14 ` Florian Weimer
2021-10-15 13:50 ` Bill Schmidt
2021-10-15 14:20 ` Jakub Jelinek
2021-10-15 18:05 ` Thomas Koenig
2021-10-15 18:11 ` Jakub Jelinek
2021-10-15 18:58 ` Thomas Koenig
2021-10-15 22:24 ` Segher Boessenkool
2021-10-15 22:36 ` Segher Boessenkool
2021-10-18 19:02 ` Joseph Myers
2021-10-28 3:10 ` Michael Meissner
2021-10-29 3:36 ` libgfortran.so SONAME and powerpc64le-linux ABI changes (work in progress patches) Michael Meissner
2021-10-29 19:07 ` Thomas Koenig
2021-10-29 21:06 ` Michael Meissner
2021-11-01 15:56 ` Bill Schmidt
2021-11-02 15:40 ` Michael Meissner
2021-10-30 0:16 ` libgfortran.so SONAME and powerpc64le-linux ABI changes (2nd patch) Michael Meissner
2021-10-30 9:30 ` Thomas Koenig
2021-10-30 10:03 ` Jakub Jelinek
2021-10-30 10:31 ` Thomas Koenig
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