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Linux kernel mirror (for testing)
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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_get_arguments(struct task_struct *tsk,
21 struct pt_regs *regs, unsigned int i,
22 unsigned int n, unsigned long *args)
23{
24 BUG_ON(i);
25
26 switch (n) {
27 case 6:
28 args[5] = regs->gr[21];
29 case 5:
30 args[4] = regs->gr[22];
31 case 4:
32 args[3] = regs->gr[23];
33 case 3:
34 args[2] = regs->gr[24];
35 case 2:
36 args[1] = regs->gr[25];
37 case 1:
38 args[0] = regs->gr[26];
39 case 0:
40 break;
41 default:
42 BUG();
43 }
44}
45
46static inline long syscall_get_return_value(struct task_struct *task,
47 struct pt_regs *regs)
48{
49 return regs->gr[28];
50}
51
52static inline void syscall_set_return_value(struct task_struct *task,
53 struct pt_regs *regs,
54 int error, long val)
55{
56 regs->gr[28] = error ? error : val;
57}
58
59static inline void syscall_rollback(struct task_struct *task,
60 struct pt_regs *regs)
61{
62 /* do nothing */
63}
64
65static inline int syscall_get_arch(void)
66{
67 int arch = AUDIT_ARCH_PARISC;
68#ifdef CONFIG_64BIT
69 if (!is_compat_task())
70 arch = AUDIT_ARCH_PARISC64;
71#endif
72 return arch;
73}
74#endif /*_ASM_PARISC_SYSCALL_H_*/