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- /* 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, see
- <http://www.gnu.org/licenses/>. */
- #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)
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