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09abb901 JB |
1 | /* |
2 | * OpenRISC sys_or32.c | |
3 | * | |
4 | * Linux architectural port borrowing liberally from similar works of | |
5 | * others. All original copyrights apply as per the original source | |
6 | * declaration. | |
7 | * | |
8 | * Modifications for the OpenRISC architecture: | |
9 | * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> | |
10 | * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License | |
14 | * as published by the Free Software Foundation; either version | |
15 | * 2 of the License, or (at your option) any later version. | |
16 | * | |
17 | * This file contains various random system calls that | |
18 | * have a non-standard calling sequence on some platforms. | |
19 | * Since we don't have to do any backwards compatibility, our | |
20 | * versions are done in the most "normal" way possible. | |
21 | */ | |
22 | ||
23 | #include <linux/errno.h> | |
24 | #include <linux/syscalls.h> | |
25 | #include <linux/mm.h> | |
26 | ||
27 | #include <asm/syscalls.h> | |
28 | ||
29 | /* These are secondary entry points as the primary entry points are defined in | |
30 | * entry.S where we add the 'regs' parameter value | |
31 | */ | |
32 | ||
33 | asmlinkage long _sys_clone(unsigned long clone_flags, unsigned long newsp, | |
34 | int __user *parent_tid, int __user *child_tid, | |
35 | struct pt_regs *regs) | |
36 | { | |
37 | long ret; | |
38 | ||
39 | /* FIXME: Is alignment necessary? */ | |
40 | /* newsp = ALIGN(newsp, 4); */ | |
41 | ||
42 | if (!newsp) | |
43 | newsp = regs->sp; | |
44 | ||
45 | ret = do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); | |
46 | ||
47 | return ret; | |
48 | } | |
49 | ||
50 | asmlinkage int _sys_fork(struct pt_regs *regs) | |
51 | { | |
52 | #ifdef CONFIG_MMU | |
53 | return do_fork(SIGCHLD, regs->sp, regs, 0, NULL, NULL); | |
54 | #else | |
55 | return -EINVAL; | |
56 | #endif | |
57 | } |