From: Stafford Horne <shorne@gmail.com>
To: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Cc: GLIBC patches <libc-alpha@sourceware.org>,
Openrisc <openrisc@lists.librecores.org>
Subject: Re: [PATCH v3 08/13] or1k: Linux Syscall Interface
Date: Mon, 20 Dec 2021 20:53:45 +0900 [thread overview]
Message-ID: <YcBuya9mU0UM2LrA@antec> (raw)
In-Reply-To: <58c906a6-76b0-e4e1-bc17-5338b10e25f0@linaro.org>
On Fri, Dec 17, 2021 at 02:41:20PM -0300, Adhemerval Zanella wrote:
>
>
> On 17/12/2021 12:01, Stafford Horne wrote:
> > On Thu, Dec 16, 2021 at 06:17:45PM -0300, Adhemerval Zanella wrote:
> >>> diff --git a/sysdeps/unix/sysv/linux/or1k/bits/timesize.h b/sysdeps/unix/sysv/linux/or1k/bits/timesize.h
> >>> new file mode 100644
> >>> index 0000000000..3ab388da7f
> >>> --- /dev/null
> >>> +++ b/sysdeps/unix/sysv/linux/or1k/bits/timesize.h
> >>> @@ -0,0 +1,19 @@
> >>> +/* Bit size of the time_t type at glibc build time, OpenRISC version.
> >>> + Copyright (C) 2021 Free Software Foundation, Inc.
> >>> + This file is part of the GNU C Library.
> >>> +
> >>> + The GNU C Library is free software; you can redistribute it and/or
> >>> + modify it under the terms of the GNU Lesser General Public
> >>> + License as published by the Free Software Foundation; either
> >>> + version 2.1 of the License, or (at your option) any later version.
> >>> +
> >>> + The GNU C Library is distributed in the hope that it will be useful,
> >>> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> >>> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> >>> + Lesser General Public License for more details.
> >>> +
> >>> + You should have received a copy of the GNU Lesser General Public
> >>> + License along with the GNU C Library; if not, see
> >>> + <https://www.gnu.org/licenses/>. */
> >>> +
> >>> +#define __TIMESIZE 64
> >>
> >> Ok, although I think we should flip the default to 64 bits make
> >> old ports to override to 32.
> >
> > It makes sense. It might be a bit tricky as currently __TIMESIZE default is
> > __WORDSIZE. I see a few old ports which have __WORDSIZE 32 and 64 like sparc.
>
> I will fix this upstream, it is just a matter to override to 32 for older ports.
>
> >>
> >> Ok, I take that implementing it solely on __or1k_clone is more complex than
> >> using a C wrapper.
> >
> > I am not to clear what you mean here, I take you are asking why we keep
> > __or1k_clone in assembly rather than implement __or1k_clone in C too.
> >
> > There are some stack setup bits in __or1k_clone which require assembly.
> >
>
> I meant otherwise in fact, why not implement clone for or1k purely in assembly.
I see, it could be done but I think it's easier to maintain with the va_arg
parsing and generic set_errno handling being in C.
-Staffford
next prev parent reply other threads:[~2021-12-20 11:53 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-10 23:34 [PATCH v3 00/13] Glibc OpenRISC port Stafford Horne
2021-12-10 23:34 ` [PATCH v3 01/13] elf: Add reloc for OpenRISC Stafford Horne
2021-12-14 20:28 ` Adhemerval Zanella
2021-12-10 23:34 ` [PATCH v3 02/13] linux/syscalls: Add or1k_atomic syscall " Stafford Horne
2021-12-14 20:29 ` Adhemerval Zanella
2021-12-10 23:34 ` [PATCH v3 03/13] or1k: ABI Implementation Stafford Horne
2021-12-14 20:53 ` Adhemerval Zanella
2021-12-14 22:43 ` Joseph Myers
2021-12-15 1:15 ` Adhemerval Zanella
2021-12-15 23:33 ` Stafford Horne
2021-12-16 10:30 ` Adhemerval Zanella
2021-12-16 21:28 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 04/13] or1k: startup and dynamic linking code Stafford Horne
2021-12-16 10:42 ` Adhemerval Zanella
2021-12-17 23:03 ` Stafford Horne
2021-12-20 19:45 ` Adhemerval Zanella
2021-12-20 21:40 ` Stafford Horne
2021-12-21 11:09 ` Adhemerval Zanella
2021-12-21 11:46 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 05/13] or1k: Thread Local Storage support Stafford Horne
2021-12-16 11:35 ` Adhemerval Zanella
2021-12-16 12:37 ` Adhemerval Zanella
2021-12-16 19:26 ` Joseph Myers
2021-12-16 19:33 ` Adhemerval Zanella
2021-12-17 14:23 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 06/13] or1k: Atomics and Locking primitives Stafford Horne
2021-12-16 12:52 ` Adhemerval Zanella
2021-12-16 19:43 ` Adhemerval Zanella
2021-12-17 15:03 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 07/13] or1k: math soft float support Stafford Horne
2021-12-16 19:48 ` Adhemerval Zanella
2021-12-17 15:02 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 08/13] or1k: Linux Syscall Interface Stafford Horne
2021-12-16 21:17 ` Adhemerval Zanella
2021-12-17 15:01 ` Stafford Horne
2021-12-17 17:41 ` Adhemerval Zanella
2021-12-20 11:53 ` Stafford Horne [this message]
2021-12-10 23:34 ` [PATCH v3 09/13] or1k: Linux ABI Stafford Horne
2021-12-21 13:41 ` Adhemerval Zanella
2021-12-21 14:54 ` Stafford Horne
2021-12-22 10:54 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 10/13] or1k: ABI lists Stafford Horne
2021-12-22 20:20 ` Adhemerval Zanella
2021-12-23 8:36 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 11/13] or1k: Build Infrastructure Stafford Horne
2021-12-22 21:03 ` Adhemerval Zanella
2021-12-23 7:32 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 12/13] build-many-glibcs.py: add OpenRISC support Stafford Horne
2021-12-22 21:04 ` Adhemerval Zanella
2021-12-23 7:15 ` Stafford Horne
2021-12-10 23:34 ` [PATCH v3 13/13] Documentation for OpenRISC port Stafford Horne
2021-12-23 12:57 ` Adhemerval Zanella
2021-12-14 20:25 ` [PATCH v3 00/13] Glibc " Adhemerval Zanella
2021-12-15 1:19 ` Adhemerval Zanella
2021-12-15 5:34 ` Stafford Horne
2021-12-15 5:37 ` Stafford Horne
2021-12-23 15:46 ` Stafford Horne
2021-12-23 15:57 ` Andreas Schwab
2021-12-23 21:26 ` Stafford Horne
2021-12-25 7:24 ` Stafford Horne
2021-12-25 22:44 ` Stafford Horne
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YcBuya9mU0UM2LrA@antec \
--to=shorne@gmail.com \
--cc=adhemerval.zanella@linaro.org \
--cc=libc-alpha@sourceware.org \
--cc=openrisc@lists.librecores.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).