projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 2004-2016 Free Software Foundation, Inc. |
| 3846ef75 UD |
2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 12 | Lesser General Public License for more details. |
| 3846ef75 | 13 | |
| 41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
| 18 | #include <sysdep.h> | |
| 19 | #define _ERRNO_H 1 | |
| 20 | #include <bits/errno.h> | |
| d936d379 | 21 | #include <tcb-offsets.h> |
| 3846ef75 UD |
22 | |
| 23 | /* Clone the calling process, but without copying the whole address space. | |
| 24 | The calling process is suspended until the new process exits or is | |
| 25 | replaced by a call to `execve'. Return -1 for errors, 0 to the new process, | |
| 26 | and the process ID of the new process to the old process. */ | |
| 27 | ||
| d936d379 | 28 | ENTRY (__libc_vfork) |
| 3846ef75 | 29 | |
| d936d379 | 30 | mov.w .L1, r3 |
| 876f9634 | 31 | trapa #0x10 |
| 3846ef75 | 32 | mov r0, r1 |
| d936d379 | 33 | |
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34 | mov #-12, r2 |
| 35 | shad r2, r1 | |
| 36 | not r1, r1 // r1=0 means r0 = -1 to -4095 | |
| 37 | tst r1, r1 // i.e. error in linux | |
| bbd17455 | 38 | bf .Lpseudo_end |
| bbd17455 UD |
39 | SYSCALL_ERROR_HANDLER |
| 40 | .Lpseudo_end: | |
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41 | rts |
| 42 | nop | |
| d936d379 RM |
43 | .L1: |
| 44 | .word __NR_vfork | |
| d936d379 RM |
45 | .align 2 |
| 46 | PSEUDO_END (__libc_vfork) | |
| d1436edc | 47 | |
| 4f41c682 | 48 | #if IS_IN (libc) |
| d936d379 RM |
49 | weak_alias (__libc_vfork, vfork) |
| 50 | strong_alias (__libc_vfork, __vfork) | |
| a4baf360 | 51 | libc_hidden_def (__vfork) |
| d936d379 | 52 | #endif |