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From: Jakub Jelinek <jakub@redhat.com>
To: Andreas Schwab <schwab@suse.de>
Cc: Ulrich Drepper <drepper@redhat.com>,
	Glibc hackers <libc-hacker@sources.redhat.com>
Subject: Re: [PATCH] getpid/vfork/raise fix
Date: Wed, 10 Mar 2004 15:01:00 -0000	[thread overview]
Message-ID: <20040310125148.GU3822@sunsite.ms.mff.cuni.cz> (raw)
In-Reply-To: <jeznaoixge.fsf@sykes.suse.de>

On Wed, Mar 10, 2004 at 03:33:05PM +0100, Andreas Schwab wrote:
> That doesn't seem to work, though.  I'm getting p3 != p4 in the posix
> vfork tests.  Or do you see any error in my implementation?

Yes.

> ENTRY(__vfork)
> 	alloc r2=ar.pfs,0,0,2,0
> 	adds r14=PID,r13
> 	;; 
> 	ld4 r16=[r14]
> 	;;
> 	sub r15=0,r16
> 	cmp.eq p0,p6=0,r16

This line should read
	cmp.eq p6,p0=0,r16
instead.
You want to set ->pid to 0x80000000 if ->pid has been previously 0, not
non-zero.
With this change both tst-vfork1.c and tst-vfork2.c pass for me
(well, I was testing with a LD_PRELOAD'ed lib containing just this assembly,
did not want to build full ia64 glibc).

	Jakub

  reply	other threads:[~2004-03-10 15:01 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-03-07 23:18 getpid/vfork broken Andreas Schwab
2004-03-07 23:30 ` Ulrich Drepper
2004-03-08  2:22   ` Roland McGrath
2004-03-08  2:28     ` Ulrich Drepper
2004-03-08  2:37       ` Roland McGrath
2004-03-08 13:10         ` Jakub Jelinek
2004-03-09  1:28           ` Roland McGrath
2004-03-09  2:04             ` Ulrich Drepper
2004-03-09  3:50               ` Richard Henderson
2004-03-09  7:48           ` Ulrich Drepper
2004-03-09 13:01             ` Andreas Schwab
2004-03-09 13:59               ` [PATCH] getpid/vfork/raise fix Jakub Jelinek
2004-03-09 16:44                 ` Andreas Schwab
2004-03-09 19:38                   ` Jakub Jelinek
2004-03-10  5:53                 ` Ulrich Drepper
2004-03-10 10:37                 ` Andreas Schwab
2004-03-10 12:24                   ` Jakub Jelinek
2004-03-10 14:33                     ` Andreas Schwab
2004-03-10 15:01                       ` Jakub Jelinek [this message]
2004-03-10 15:06                         ` Andreas Schwab
2004-03-10 16:56                       ` David Mosberger
2004-03-10 17:02                         ` Jakub Jelinek
2004-03-10 17:45                           ` David Mosberger
2004-03-10 18:19                             ` Jakub Jelinek
2004-03-10 19:24                               ` David Mosberger
2004-03-10 18:44                   ` Ulrich Drepper
2004-03-10 19:18                     ` [PATCH] IA-64 pt-vfork fix Jakub Jelinek
2004-03-10 23:10                       ` Ulrich Drepper

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