1/* SPDX-License-Identifier: GPL-2.0 */
2/* syscall.h */
3
4#ifndef _ASM_PARISC_SYSCALL_H_
5#define _ASM_PARISC_SYSCALL_H_
6
7#include <uapi/linux/audit.h>
8#include <linux/compat.h>
9#include <linux/err.h>
10#include <asm/ptrace.h>
11
12#define NR_syscalls (__NR_Linux_syscalls)
13
14static inline long syscall_get_nr(struct task_struct *tsk,
15				  struct pt_regs *regs)
16{
17	return regs->gr[20];
18}
19
20static inline void syscall_get_arguments(struct task_struct *tsk,
21					 struct pt_regs *regs,
22					 unsigned long *args)
23{
24	args[5] = regs->gr[21];
25	args[4] = regs->gr[22];
26	args[3] = regs->gr[23];
27	args[2] = regs->gr[24];
28	args[1] = regs->gr[25];
29	args[0] = regs->gr[26];
30}
31
32static inline long syscall_get_error(struct task_struct *task,
33				     struct pt_regs *regs)
34{
35	unsigned long error = regs->gr[28];
36	return IS_ERR_VALUE(error) ? error : 0;
37}
38
39static inline long syscall_get_return_value(struct task_struct *task,
40						struct pt_regs *regs)
41{
42	return regs->gr[28];
43}
44
45static inline void syscall_set_return_value(struct task_struct *task,
46					    struct pt_regs *regs,
47					    int error, long val)
48{
49	regs->gr[28] = error ? error : val;
50}
51
52static inline void syscall_rollback(struct task_struct *task,
53				    struct pt_regs *regs)
54{
55	/* do nothing */
56}
57
58static inline int syscall_get_arch(struct task_struct *task)
59{
60	int arch = AUDIT_ARCH_PARISC;
61#ifdef CONFIG_64BIT
62	if (!__is_compat_task(task))
63		arch = AUDIT_ARCH_PARISC64;
64#endif
65	return arch;
66}
67#endif /*_ASM_PARISC_SYSCALL_H_*/
68