| 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586 |
- /* Copyright (C) 2003 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 <sysdep-cancel.h>
- #define _ERRNO_H 1
- #include <bits/errno.h>
- #include <kernel-features.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)
- #ifdef __NR_vfork
- # ifdef SHARED
- mflr 9
- # ifdef HAVE_ASM_PPC_REL16
- bcl 20,31,1f
- 1: mflr 10
- addis 10,10,__libc_pthread_functions-1b@ha
- lwz 10,__libc_pthread_functions-1b@l(10)
- mtlr 9
- # else
- bl _GLOBAL_OFFSET_TABLE_@local-4
- mflr 10
- mtlr 9
- lwz 10,__libc_pthread_functions@got(10)
- lwz 10,0(10)
- # endif
- # else
- .weak pthread_create
- lis 10,pthread_create@ha
- la 10,pthread_create@l(10)
- # endif
- cmpwi 10,0
- bne- .Lhidden_fork
- DO_CALL (SYS_ify (vfork));
- # ifdef __ASSUME_VFORK_SYSCALL
- PSEUDO_RET
- # else
- bnslr+
- /* Check if vfork syscall is known at all. */
- cmpwi r3,ENOSYS
- bne- .Lsyscall_error
- # endif
- .Lhidden_fork:
- b HIDDEN_JUMPTARGET(__fork)
- #endif
- #ifndef __ASSUME_VFORK_SYSCALL
- /* If we don't have vfork, fork is close enough. */
- DO_CALL (SYS_ify (fork));
- bnslr+
- .Lsyscall_error:
- b __syscall_error@local
- #endif
- PSEUDO_END (__vfork)
- libc_hidden_def (__vfork)
- weak_alias (__vfork, vfork)
|
