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
syscall_get_nr(struct task_struct * tsk,struct pt_regs * regs)14 static inline long syscall_get_nr(struct task_struct *tsk,
15 struct pt_regs *regs)
16 {
17 return regs->gr[20];
18 }
19
syscall_get_arguments(struct task_struct * tsk,struct pt_regs * regs,unsigned long * args)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
syscall_get_error(struct task_struct * task,struct pt_regs * regs)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
syscall_get_return_value(struct task_struct * task,struct pt_regs * regs)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
syscall_set_return_value(struct task_struct * task,struct pt_regs * regs,int error,long val)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
syscall_rollback(struct task_struct * task,struct pt_regs * regs)52 static inline void syscall_rollback(struct task_struct *task,
53 struct pt_regs *regs)
54 {
55 /* do nothing */
56 }
57
syscall_get_arch(struct task_struct * task)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_*/
68