1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef __ASM_SYSCALL_H
4#define __ASM_SYSCALL_H
5
6#include <linux/sched.h>
7#include <linux/err.h>
8#include <abi/regdef.h>
9#include <uapi/linux/audit.h>
10
11extern void *sys_call_table[];
12
13static inline int
14syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
15{
16	return regs_syscallid(regs);
17}
18
19static inline void
20syscall_set_nr(struct task_struct *task, struct pt_regs *regs,
21	       int sysno)
22{
23	regs_syscallid(regs) = sysno;
24}
25
26static inline void
27syscall_rollback(struct task_struct *task, struct pt_regs *regs)
28{
29	regs->a0 = regs->orig_a0;
30}
31
32static inline long
33syscall_get_error(struct task_struct *task, struct pt_regs *regs)
34{
35	unsigned long error = regs->a0;
36
37	return IS_ERR_VALUE(error) ? error : 0;
38}
39
40static inline long
41syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
42{
43	return regs->a0;
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->a0 = (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	args[0] = regs->orig_a0;
58	args++;
59	memcpy(args, &regs->a1, 5 * sizeof(args[0]));
60}
61
62static inline int
63syscall_get_arch(struct task_struct *task)
64{
65	return AUDIT_ARCH_CSKY;
66}
67
68#endif	/* __ASM_SYSCALL_H */
69