From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23389 invoked by alias); 9 Mar 2004 13:01:24 -0000 Mailing-List: contact libc-hacker-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-hacker-owner@sources.redhat.com Received: (qmail 23361 invoked from network); 9 Mar 2004 13:01:23 -0000 Received: from unknown (HELO Cantor.suse.de) (195.135.220.2) by sources.redhat.com with SMTP; 9 Mar 2004 13:01:23 -0000 Received: from hermes.suse.de (Hermes.suse.de [195.135.221.8]) (using TLSv1 with cipher EDH-RSA-DES-CBC3-SHA (168/168 bits)) (No client certificate requested) by Cantor.suse.de (Postfix) with ESMTP id DFB982B5537; Tue, 9 Mar 2004 14:01:22 +0100 (CET) To: Ulrich Drepper Cc: libc-hacker@sources.redhat.com Subject: Re: getpid/vfork broken References: <404BDA36.6000202@redhat.com> <200403080237.i282bXG6004322@magilla.sf.frob.com> <20040308110105.GN3822@sunsite.ms.mff.cuni.cz> <404D76CA.4010500@redhat.com> From: Andreas Schwab X-Yow: Okay, BARBRA STREISAND, I recognize you now!! Also EFREM ZIMBALIST, JUNIOR!! And BEAUMONT NEWHALL!! Everybody into th' BATHROOM! Date: Tue, 09 Mar 2004 13:01:00 -0000 In-Reply-To: <404D76CA.4010500@redhat.com> (Ulrich Drepper's message of "Mon, 08 Mar 2004 23:48:26 -0800") Message-ID: User-Agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-SW-Source: 2004-03/txt/msg00033.txt.bz2 Ulrich Drepper writes: > Anyway, for the getpid handling, the other archs need to be handled, > too. The x86/x86-64 changes are kept small, I envision this is the > model for the other archs, too. Here's the same for ia64. Andreas. 2004-03-09 Andreas Schwab * sysdeps/ia64/tcb-offsets.sym: Add PID. * sysdeps/unix/sysv/linux/ia64/vfork.S: New file. --- nptl/sysdeps/ia64/tcb-offsets.sym.~1.5.~ 2003-12-11 11:35:12.000000000 +0100 +++ nptl/sysdeps/ia64/tcb-offsets.sym 2004-03-09 10:49:45.000000000 +0100 @@ -1,5 +1,6 @@ #include #include +PID offsetof (struct pthread, pid) - sizeof (struct pthread) MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) - sizeof (struct pthread) SYSINFO_OFFSET offsetof (tcbhead_t, private) --- /dev/null 2004-02-28 23:52:18.000000000 +0100 +++ nptl/sysdeps/unix/sysv/linux/ia64/vfork.S 2004-03-09 13:19:05.000000000 +0100 @@ -0,0 +1,54 @@ +/* Copyright (C) 2000, 2002, 2004 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + + +#include +#define _SIGNAL_H +#include +#include + +/* The following are defined in linux/sched.h, which unfortunately */ +/* is not safe for inclusion in an assembly file. */ +#define CLONE_VM 0x00000100 /* set if VM shared between processes */ +#define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */ + +/* pid_t vfork(void); */ +/* Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0) */ + +ENTRY(__vfork) + alloc r2=ar.pfs,0,1,2,0 + adds r14=PID,r13 + mov r15=-1 + ;; + ld4 loc0=[r14] + st4 [r14]=r15 + mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD + mov out1=0 /* Standard sp value. */ + ;; + DO_CALL_VIA_BREAK (SYS_ify (clone)) + cmp.eq p0,p7=0,r8 + cmp.eq p6,p0=-1,r10 + adds r14=PID,r13 + ;; +(p7) st4 [r14]=loc0 +(p6) br.cond.spnt.few __syscall_error + ret +PSEUDO_END(__vfork) +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) -- Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux AG, Maxfeldstraße 5, 90409 Nürnberg, Germany Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."