syscall.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_M68K_SYSCALL_H
 3#define _ASM_M68K_SYSCALL_H
 4
 5#include <uapi/linux/audit.h>
 6
 7#include <asm/unistd.h>
 8
 9extern const unsigned long sys_call_table[];
10
11static inline int syscall_get_nr(struct task_struct *task,
12				 struct pt_regs *regs)
13{
14	return regs->orig_d0;
15}
16
17static inline void syscall_set_nr(struct task_struct *task,
18				  struct pt_regs *regs,
19				  int nr)
20{
21	regs->orig_d0 = nr;
22}
23
24static inline void syscall_rollback(struct task_struct *task,
25				    struct pt_regs *regs)
26{
27	regs->d0 = regs->orig_d0;
28}
29
30static inline long syscall_get_error(struct task_struct *task,
31				     struct pt_regs *regs)
32{
33	unsigned long error = regs->d0;
34
35	return IS_ERR_VALUE(error) ? error : 0;
36}
37
38static inline long syscall_get_return_value(struct task_struct *task,
39					    struct pt_regs *regs)
40{
41	return regs->d0;
42}
43
44static inline void syscall_set_return_value(struct task_struct *task,
45					    struct pt_regs *regs,
46					    int error, long val)
47{
48	regs->d0 = (long)error ?: val;
49}
50
51static inline void syscall_get_arguments(struct task_struct *task,
52					 struct pt_regs *regs,
53					 unsigned long *args)
54{
55	args[0] = regs->orig_d0;
56	args++;
57
58	memcpy(args, &regs->d1, 5 * sizeof(args[0]));
59}
60
61static inline void syscall_set_arguments(struct task_struct *task,
62					 struct pt_regs *regs,
63					 unsigned long *args)
64{
65	regs->orig_d0 = args[0];
66	args++;
67
68	memcpy(&regs->d1, args, 5 * sizeof(args[0]));
69}
70
71static inline int syscall_get_arch(struct task_struct *task)
72{
73	return AUDIT_ARCH_M68K;
74}
75
76#endif	/* _ASM_M68K_SYSCALL_H */