From: Andi Kleen <ak@suse.de>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Andi Kleen <ak@suse.de>
Subject: Re: Hammer thread fixes
Date: Sat, 15 Mar 2003 22:24:38 +0100 [thread overview]
Message-ID: <20030315212438.GA8113@wotan.suse.de> (raw)
In-Reply-To: <3E739514.8010300@redhat.com>
On Sat, Mar 15, 2003 at 01:03:16PM -0800, Ulrich Drepper wrote:
> The appended two fixes are necessary to get NPTL threads running on
> hammer. The changes should be obvious. The exit_group syscall isn't
> present at all so far and the r10 -> r8 register use is necessary
> because syscall parameter #4 (in r10) is already used for the child_tid
> parameter.
It's incorrect like I told you last time. arg 4 is in r10. Linus please don't
apply.
The clone prototype is
int clone(int flags, unsigned long newsp, void *parent_tid, void *child_tid) ;
rax: __NR_clone
rdi: flags
rsi: newsp
rdx: parent_tid
r10: child_tid
See appendix A of the x86-64 ABI for details. The kernel ABI
is different from the user space ABI because of the SYSCALL clobbers.
For exit_group please wait for my next merge.
-Andi
next prev parent reply other threads:[~2003-03-15 21:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-15 21:03 Ulrich Drepper
2003-03-15 21:24 ` Andi Kleen [this message]
2003-03-15 22:25 ` Ulrich Drepper
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