| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 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 | |
| 7 | typedef 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)) |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 16 | #define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg) |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 17 | |
| 18 | #endif /* __ASM_CSKY_SEGMENT_H */ |