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| author | "Steven J. Hill" <sjhill@realitydiluted.com> | 2006-02-23 02:35:04 +0000 |
|---|---|---|
| committer | "Steven J. Hill" <sjhill@realitydiluted.com> | 2006-02-23 02:35:04 +0000 |
| commit | 0f2c86bee22bc756814129b430b0687c7e23df81 (patch) | |
| tree | 34bf3df7ba73405de13432cd82002540c073fc05 /libpthread/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S | |
| parent | d8284756b901217626556772ea91a3839a3ebfb4 (diff) | |
| download | uClibc-alpine-0f2c86bee22bc756814129b430b0687c7e23df81.tar.bz2 uClibc-alpine-0f2c86bee22bc756814129b430b0687c7e23df81.tar.xz | |
Copy from trunk.
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S')
| -rw-r--r-- | libpthread/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S new file mode 100644 index 000000000..6dfeca86d --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S @@ -0,0 +1,69 @@ +/* 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) + basr %r1,0 +0: +#ifdef SHARED + al %r1,4f-0b(%r1) + l %r1,0(%r1) + ltr %r1,%r1 +#else + icm %r1,15,4f-0b(%r1) +#endif + jne 1f + + /* 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 +1: + basr %r1,0 +2: + al %r1,3f-2b(%r1) + br %r1 +3: + .long HIDDEN_JUMPTARGET(__fork)-2b +4: +#ifdef SHARED + .long __libc_pthread_functions-0b +#else + .weak pthread_create + .long pthread_create +#endif +PSEUDO_END(__vfork) + +libc_hidden_def (__vfork) + +weak_alias (__vfork, vfork) |