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- /* Copyright (C) 1999-2017 Free Software Foundation, Inc.
- 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.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)
- mov x0, #0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
- mov x1, sp
- DO_CALL (clone, 2)
- cmn x0, #4095
- b.cs .Lsyscall_error
- RET
- PSEUDO_END (vfork)
- libc_hidden_def (vfork)
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