Merge branches 'acpi-scan', 'acpi-tables', 'acpi-misc' and 'acpi-pm'
[sfrench/cifs-2.6.git] / arch / c6x / include / asm / syscall.h
1 /*
2  * Copyright (C) 2011 Texas Instruments Incorporated
3  * Author: Mark Salter <msalter@redhat.com>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  */
10
11 #ifndef __ASM_C6X_SYSCALL_H
12 #define __ASM_C6X_SYSCALL_H
13
14 #include <linux/err.h>
15 #include <linux/sched.h>
16
17 static inline int syscall_get_nr(struct task_struct *task,
18                                  struct pt_regs *regs)
19 {
20         return regs->b0;
21 }
22
23 static inline void syscall_rollback(struct task_struct *task,
24                                     struct pt_regs *regs)
25 {
26         /* do nothing */
27 }
28
29 static inline long syscall_get_error(struct task_struct *task,
30                                      struct pt_regs *regs)
31 {
32         return IS_ERR_VALUE(regs->a4) ? regs->a4 : 0;
33 }
34
35 static inline long syscall_get_return_value(struct task_struct *task,
36                                             struct pt_regs *regs)
37 {
38         return regs->a4;
39 }
40
41 static inline void syscall_set_return_value(struct task_struct *task,
42                                             struct pt_regs *regs,
43                                             int error, long val)
44 {
45         regs->a4 = error ?: val;
46 }
47
48 static inline void syscall_get_arguments(struct task_struct *task,
49                                          struct pt_regs *regs,
50                                          unsigned long *args)
51 {
52         *args++ = regs->a4;
53         *args++ = regs->b4;
54         *args++ = regs->a6;
55         *args++ = regs->b6;
56         *args++ = regs->a8;
57         *args   = regs->b8;
58 }
59
60 static inline void syscall_set_arguments(struct task_struct *task,
61                                          struct pt_regs *regs,
62                                          const unsigned long *args)
63 {
64         regs->a4 = *args++;
65         regs->b4 = *args++;
66         regs->a6 = *args++;
67         regs->b6 = *args++;
68         regs->a8 = *args++;
69         regs->a9 = *args;
70 }
71
72 #endif /* __ASM_C6X_SYSCALLS_H */