1 /*
2  * OpenRISC Linux
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  * OpenRISC implementation:
9  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
10  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
11  * et al.
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  */
18 
19 #ifndef __ASM_OPENRISC_SYSCALL_H__
20 #define __ASM_OPENRISC_SYSCALL_H__
21 
22 #include <uapi/linux/audit.h>
23 #include <linux/err.h>
24 #include <linux/sched.h>
25 
26 static inline int
27 syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
28 {
29 	return regs->orig_gpr11;
30 }
31 
32 static inline void
33 syscall_rollback(struct task_struct *task, struct pt_regs *regs)
34 {
35 	regs->gpr[11] = regs->orig_gpr11;
36 }
37 
38 static inline long
39 syscall_get_error(struct task_struct *task, struct pt_regs *regs)
40 {
41 	return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0;
42 }
43 
44 static inline long
45 syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
46 {
47 	return regs->gpr[11];
48 }
49 
50 static inline void
51 syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
52 			 int error, long val)
53 {
54 	regs->gpr[11] = (long) error ?: val;
55 }
56 
57 static inline void
58 syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
59 		      unsigned long *args)
60 {
61 	memcpy(args, &regs->gpr[3], 6 * sizeof(args[0]));
62 }
63 
64 static inline void
65 syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
66 		      const unsigned long *args)
67 {
68 	memcpy(&regs->gpr[3], args, 6 * sizeof(args[0]));
69 }
70 
71 static inline int syscall_get_arch(struct task_struct *task)
72 {
73 	return AUDIT_ARCH_OPENRISC;
74 }
75 #endif
76