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d4697bc9 | 1 | /* Copyright (C) 2000-2014 Free Software Foundation, Inc. |
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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 | |
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. | |
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 | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
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15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
18 | ||
19 | #include <sysdep.h> | |
20 | #define _SIGNAL_H | |
21 | #include <bits/signum.h> | |
22 | ||
23 | /* The following are defined in linux/sched.h, which unfortunately */ | |
24 | /* is not safe for inclusion in an assembly file. */ | |
25 | #define CLONE_VM 0x00000100 /* set if VM shared between processes */ | |
26 | #define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */ | |
27 | ||
28 | /* pid_t vfork(void); */ | |
29 | /* Implemented as __clone_syscall(CLONE_VFORK | CLONE_VM | SIGCHLD, 0) */ | |
30 | ||
31 | ENTRY(__vfork) | |
32 | alloc r2=ar.pfs,0,0,2,0 | |
33 | mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD | |
34 | mov out1=0 /* Standard sp value. */ | |
35 | ;; | |
36 | DO_CALL_VIA_BREAK (SYS_ify (clone)) | |
37 | cmp.eq p6,p0=-1,r10 | |
38 | (p6) br.cond.spnt.few __syscall_error | |
39 | ret | |
40 | PSEUDO_END(__vfork) | |
41 | libc_hidden_def (__vfork) | |
42 | ||
43 | weak_alias (__vfork, vfork) |