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 <linux/err.h>
23#include <linux/sched.h>
24
25static inline int
26syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
27{
28	return regs->syscallno ? regs->syscallno : -1;
29}
30
31static inline void
32syscall_rollback(struct task_struct *task, struct pt_regs *regs)
33{
34	regs->gpr[11] = regs->orig_gpr11;
35}
36
37static inline long
38syscall_get_error(struct task_struct *task, struct pt_regs *regs)
39{
40	return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0;
41}
42
43static inline long
44syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
45{
46	return regs->gpr[11];
47}
48
49static inline void
50syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
51			 int error, long val)
52{
53	if (error)
54		regs->gpr[11] = -error;
55	else
56		regs->gpr[11] = val;
57}
58
59static inline void
60syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
61		      unsigned int i, unsigned int n, unsigned long *args)
62{
63	BUG_ON(i + n > 6);
64
65	memcpy(args, &regs->gpr[3 + i], n * sizeof(args[0]));
66}
67
68static inline void
69syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
70		      unsigned int i, unsigned int n, const unsigned long *args)
71{
72	BUG_ON(i + n > 6);
73
74	memcpy(&regs->gpr[3 + i], args, n * sizeof(args[0]));
75}
76
77#endif

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * OpenRISC Linux
 4 *
 5 * Linux architectural port borrowing liberally from similar works of
 6 * others.  All original copyrights apply as per the original source
 7 * declaration.
 8 *
 9 * OpenRISC implementation:
10 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
12 * et al.
 
 
 
 
 
13 */
14
15#ifndef __ASM_OPENRISC_SYSCALL_H__
16#define __ASM_OPENRISC_SYSCALL_H__
17
18#include <uapi/linux/audit.h>
19#include <linux/err.h>
20#include <linux/sched.h>
21
22static inline int
23syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
24{
25	return regs->orig_gpr11;
26}
27
28static inline void
29syscall_rollback(struct task_struct *task, struct pt_regs *regs)
30{
31	regs->gpr[11] = regs->orig_gpr11;
32}
33
34static inline long
35syscall_get_error(struct task_struct *task, struct pt_regs *regs)
36{
37	return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0;
38}
39
40static inline long
41syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
42{
43	return regs->gpr[11];
44}
45
46static inline void
47syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
48			 int error, long val)
49{
50	regs->gpr[11] = (long) error ?: val;
 
 
 
51}
52
53static inline void
54syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
55		      unsigned long *args)
56{
57	memcpy(args, &regs->gpr[3], 6 * sizeof(args[0]));
 
 
58}
59
60static inline int syscall_get_arch(struct task_struct *task)
 
 
61{
62	return AUDIT_ARCH_OPENRISC;
 
 
63}
 
64#endif