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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_set_nr(struct task_struct *tsk,
21 struct pt_regs *regs,
22 int nr)
23{
24 regs->gr[20] = nr;
25}
26
27static inline void syscall_get_arguments(struct task_struct *tsk,
28 struct pt_regs *regs,
29 unsigned long *args)
30{
31 args[5] = regs->gr[21];
32 args[4] = regs->gr[22];
33 args[3] = regs->gr[23];
34 args[2] = regs->gr[24];
35 args[1] = regs->gr[25];
36 args[0] = regs->gr[26];
37}
38
39static inline void syscall_set_arguments(struct task_struct *tsk,
40 struct pt_regs *regs,
41 unsigned long *args)
42{
43 regs->gr[21] = args[5];
44 regs->gr[22] = args[4];
45 regs->gr[23] = args[3];
46 regs->gr[24] = args[2];
47 regs->gr[25] = args[1];
48 regs->gr[26] = args[0];
49}
50
51static inline long syscall_get_error(struct task_struct *task,
52 struct pt_regs *regs)
53{
54 unsigned long error = regs->gr[28];
55 return IS_ERR_VALUE(error) ? error : 0;
56}
57
58static inline long syscall_get_return_value(struct task_struct *task,
59 struct pt_regs *regs)
60{
61 return regs->gr[28];
62}
63
64static inline void syscall_set_return_value(struct task_struct *task,
65 struct pt_regs *regs,
66 int error, long val)
67{
68 regs->gr[28] = error ? error : val;
69}
70
71static inline void syscall_rollback(struct task_struct *task,
72 struct pt_regs *regs)
73{
74 /* do nothing */
75}
76
77static inline int syscall_get_arch(struct task_struct *task)
78{
79 int arch = AUDIT_ARCH_PARISC;
80#ifdef CONFIG_64BIT
81 if (!__is_compat_task(task))
82 arch = AUDIT_ARCH_PARISC64;
83#endif
84 return arch;
85}
86#endif /*_ASM_PARISC_SYSCALL_H_*/