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1da177e4 LT |
1 | #ifndef _H8300_SEGMENT_H |
2 | #define _H8300_SEGMENT_H | |
3 | ||
4 | /* define constants */ | |
5 | #define USER_DATA (1) | |
6 | #ifndef __USER_DS | |
7 | #define __USER_DS (USER_DATA) | |
8 | #endif | |
9 | #define USER_PROGRAM (2) | |
10 | #define SUPER_DATA (3) | |
11 | #ifndef __KERNEL_DS | |
12 | #define __KERNEL_DS (SUPER_DATA) | |
13 | #endif | |
14 | #define SUPER_PROGRAM (4) | |
15 | ||
16 | #ifndef __ASSEMBLY__ | |
17 | ||
18 | typedef struct { | |
19 | unsigned long seg; | |
20 | } mm_segment_t; | |
21 | ||
22 | #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) | |
23 | #define USER_DS MAKE_MM_SEG(__USER_DS) | |
24 | #define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS) | |
25 | ||
26 | /* | |
27 | * Get/set the SFC/DFC registers for MOVES instructions | |
28 | */ | |
29 | ||
30 | static inline mm_segment_t get_fs(void) | |
31 | { | |
32 | return USER_DS; | |
33 | } | |
34 | ||
35 | static inline mm_segment_t get_ds(void) | |
36 | { | |
37 | /* return the supervisor data space code */ | |
38 | return KERNEL_DS; | |
39 | } | |
40 | ||
41 | static inline void set_fs(mm_segment_t val) | |
42 | { | |
43 | } | |
44 | ||
45 | #define segment_eq(a,b) ((a).seg == (b).seg) | |
46 | ||
47 | #endif /* __ASSEMBLY__ */ | |
48 | ||
49 | #endif /* _H8300_SEGMENT_H */ |