From: Ralf Baechle <ralf@linux-mips.org>
To: Prasad B <bprasad@cs.arizona.edu>
Cc: linux-mips@linux-mips.org
Subject: Re: traditional signal support in 64-bit mips linux
Date: Tue, 18 Nov 2008 11:53:56 +0000 [thread overview]
Message-ID: <20081118115356.GA7700@linux-mips.org> (raw)
In-Reply-To: <e8180c7f0811171324i35da6933mc29ce386afb7393a@mail.gmail.com>
On Mon, Nov 17, 2008 at 01:24:07PM -0800, Prasad B wrote:
> Is traditional signal support, enabled by the flag CONFIG_TRAD_SIGNALS
> proscribed in 64-bit mode ?
Yes - and there is no reason to do so. None of the libcs would use the
functionality and it's not experted through the syscall interface anyway.
> In arch/mips/kernel/signal.c, functions sys_sigsuspend(), sys_sigaction(),
> sys_sigreturn(), setup_frame() are conditionally compiled, depending on
> whether the flag CONFIG_TRAD_SIGNALS is defined or not. If one defines the
> constant, the compilation fails as the constants such as __NR_sigreturn are
> not defined in asm-mips/unistd.h for 64-bit mips.
>
>
> Does it mean that only realtime signals are supposed to be used in 64-bit
> mode ?
Yes - with the exception of O32 binary compatibility which uses a compat
implementation of these functions anyway. Traditional signal support is
deprecated since like 10 years.
Ralf
prev parent reply other threads:[~2008-11-18 12:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-17 21:24 traditional signal support in 64-bit mips linux Prasad B
2008-11-18 11:53 ` Ralf Baechle [this message]
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=20081118115356.GA7700@linux-mips.org \
--to=ralf@linux-mips.org \
--cc=bprasad@cs.arizona.edu \
--cc=linux-mips@linux-mips.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.