projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| d4697bc9 | 1 | /* Copyright (C) 1999-2014 Free Software Foundation, Inc. |
| 554066b8 MS |
2 | |
| 3 | This file is part of the GNU C Library. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public License as | |
| 7 | published by the Free Software Foundation; either version 2.1 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #include <sysdep.h> | |
| 20 | #define _ERRNO_H 1 | |
| 21 | #include <bits/errno.h> | |
| 22 | #include <kernel-features.h> | |
| 23 | ||
| 24 | /* Clone the calling process, but without copying the whole address space. | |
| 25 | The calling process is suspended until the new process exits or is | |
| 26 | replaced by a call to `execve'. Return -1 for errors, 0 to the new process, | |
| 27 | and the process ID of the new process to the old process. */ | |
| 28 | ||
| 29 | ENTRY (__vfork) | |
| 30 | ||
| 31 | #ifdef SAVE_PID | |
| 32 | SAVE_PID | |
| 33 | #endif | |
| 34 | mov x0, #0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */ | |
| 35 | mov x1, sp | |
| 36 | DO_CALL (clone, 2) | |
| 37 | #ifdef RESTORE_PID | |
| 38 | RESTORE_PID | |
| 39 | #endif | |
| 40 | cmn x0, #4095 | |
| 41 | b.cs 1f | |
| 42 | RET | |
| 43 | 1: | |
| 44 | b SYSCALL_ERROR | |
| 45 | ||
| 46 | PSEUDO_END (__vfork) | |
| 47 | libc_hidden_def (__vfork) | |
| 48 | ||
| 49 | weak_alias (__vfork, vfork) |