1/* SPDX-License-Identifier: GPL-2.0 */
2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
3
4#ifndef __ASM_CSKY_SEGMENT_H
5#define __ASM_CSKY_SEGMENT_H
6
7typedef struct {
8	unsigned long seg;
9} mm_segment_t;
10
11#define KERNEL_DS		((mm_segment_t) { 0xFFFFFFFF })
12
13#define USER_DS			((mm_segment_t) { 0x80000000UL })
14#define get_fs()		(current_thread_info()->addr_limit)
15#define set_fs(x)		(current_thread_info()->addr_limit = (x))
16#define uaccess_kernel()	(get_fs().seg == KERNEL_DS.seg)
17
18#endif /* __ASM_CSKY_SEGMENT_H */
19