From: Ulrich Drepper <drepper@redhat.com>
To: Richard Henderson <rth@twiddle.net>
Cc: Roland McGrath <roland@redhat.com>,
Linus Torvalds <torvalds@transmeta.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fix vsyscall unwind information
Date: Sun, 04 May 2003 00:34:34 -0700 [thread overview]
Message-ID: <3EB4C28A.8050708@redhat.com> (raw)
In-Reply-To: <20030504062124.GA32457@twiddle.net>
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Richard Henderson wrote:
> Also adds unwind info for the sigreturn entry points.
Sweet.
> This can
> be used instead of special-case hacks currently in libgcc and
> gdb, and by extension allows the kernel to change these entry
> points without breaking userland.
Exactly. This means we can get rid of the int $0x80. I.e., move the
sigreturn code in the two .S files for sysenter and int80. Reducing the
cost of signals is always good.
I'm not sure how this use of sigreturn has to look like. Linus, maybe
you should do it yourself.
- --
- --------------. ,-. 444 Castro Street
Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA
Red Hat `--' drepper at redhat.com `---------------------------
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)
iD8DBQE+tMKL2ijCOnn/RHQRAoDbAJ4nnP3Hcb8xAeqjRHxgq0YZZmcs0wCdE4BE
Obuu/wRdq70aooscs1JOhto=
=5Sx4
-----END PGP SIGNATURE-----
next prev parent reply other threads:[~2003-05-04 7:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-02 0:33 [PATCH] i386 vsyscall DSO implementation, take 2 Roland McGrath
2003-05-03 20:51 ` Richard Henderson
2003-05-04 6:21 ` [PATCH] fix vsyscall unwind information Richard Henderson
2003-05-04 7:34 ` Ulrich Drepper [this message]
[not found] <20030502004014$08e2@gated-at.bofh.it>
[not found] ` <20030503210015$292c@gated-at.bofh.it>
[not found] ` <20030504063010$279f@gated-at.bofh.it>
2003-05-05 6:49 ` David Mosberger-Tang
2003-05-05 7:42 ` Richard Henderson
2003-05-05 15:05 ` David Mosberger-Tang
2003-05-05 16:34 ` Richard Henderson
2003-05-05 16:55 ` David Mosberger-Tang
2003-05-05 23:10 ` Mark Kettenis
2003-05-06 0:21 ` Richard Henderson
2003-05-06 6:16 ` David Mosberger-Tang
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=3EB4C28A.8050708@redhat.com \
--to=drepper@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=roland@redhat.com \
--cc=rth@twiddle.net \
--cc=torvalds@transmeta.com \
/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