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Hi, Jakub found another bug for s390. The vfork system isn't used at all. Since the s390 linux kernels always had the vfork system call we don't need a fallback to fork and can just add vfork to the syscalls.list We do need a vfork.S for the linuxthreads though to check for the SINGLE_THREAD_P special case. blue skies, Martin. libc/ChangeLog: 2003-01-10 Martin Schwidefsky <schwidefsky@de.ibm.com> * sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list: Add vfork. * sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list: Add vfork. linuxthreads/ChangeLog: 2003-01-10 Martin Schwidefsky <schwidefsky@de.ibm.com> * sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: New file. * sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: New file. diff -urN libc/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S libc-s390/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S --- libc/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S Thu Jan 1 01:00:00 1970 +++ libc-s390/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S Fri Jan 10 15:57:22 2003 @@ -0,0 +1,54 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com> + + 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 <sysdep-cancel.h> +#define _ERRNO_H 1 +#include <bits/errno.h> + +/* Clone the calling process, but without copying the whole address space. + The calling process is suspended until the new process exits or is + replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + and the process ID of the new process to the old process. */ + +ENTRY (__vfork) + SINGLE_THREAD_P + jne 0f + + /* Do vfork system call. */ + svc SYS_ify (vfork) + + /* Check for error. */ + lhi %r4,-4095 + clr %r2,%r4 + jnl SYSCALL_ERROR_LABEL + + /* Normal return. */ + br %r14 +0: + basr %r1,0 +1: + l %r1,2f-1b(%r1) + br %r1 +2: + .long HIDDEN_JUMPTARGET(__fork) +PSEUDO_END(__vfork) + +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) diff -urN libc/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S libc-s390/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S --- libc/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S Thu Jan 1 01:00:00 1970 +++ libc-s390/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S Fri Jan 10 15:58:16 2003 @@ -0,0 +1,47 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com> + + 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 <sysdep-cancel.h> +#define _ERRNO_H 1 +#include <bits/errno.h> + +/* Clone the calling process, but without copying the whole address space. + The calling process is suspended until the new process exits or is + replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + and the process ID of the new process to the old process. */ + +ENTRY (__vfork) + SINGLE_THREAD_P + jgne HIDDEN_JUMPTARGET(__fork) + + /* Do vfork system call. */ + svc SYS_ify (vfork) + + /* Check for error. */ + lghi %r4,-4095 + clgr %r2,%r4 + jnl SYSCALL_ERROR_LABEL + + /* Normal return. */ + br %r14 +PSEUDO_END(__vfork) + +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) diff -urN libc/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list libc-s390/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list --- libc/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list Fri Mar 16 10:42:15 2001 +++ libc-s390/sysdeps/unix/sysv/linux/s390/s390-32/syscalls.list Fri Jan 10 15:59:52 2003 @@ -2,3 +2,4 @@ oldgetrlimit EXTRA getrlimit i:ip __old_getrlimit getrlimit@GLIBC_2.0 oldsetrlimit EXTRA setrlimit i:ip __old_setrlimit setrlimit@GLIBC_2.0 +vfork - vfork 0 __vfork vfork diff -urN libc/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list libc-s390/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list --- libc/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list Tue Dec 31 21:44:39 2002 +++ libc-s390/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list Fri Jan 10 15:59:52 2003 @@ -11,6 +11,7 @@ truncate - truncate 2 truncate truncate64 getrlimit - getrlimit 2 __getrlimit getrlimit getrlimit64 setrlimit - setrlimit 2 __setrlimit setrlimit setrlimit64 +vfork - vfork 0 __vfork vfork # semaphore and shm system calls msgctl - msgctl i:iip __msgctl msgctl
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