Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
[linux-2.6-microblaze.git] / arch / parisc / include / asm / syscall.h
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
14 static inline long syscall_get_nr(struct task_struct *tsk,
15                                   struct pt_regs *regs)
16 {
17         return regs->gr[20];
18 }
19
20 static 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
32 static 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
39 static inline long syscall_get_return_value(struct task_struct *task,
40                                                 struct pt_regs *regs)
41 {
42         return regs->gr[28];
43 }
44
45 static 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
52 static inline void syscall_rollback(struct task_struct *task,
53                                     struct pt_regs *regs)
54 {
55         /* do nothing */
56 }
57
58 static 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_*/