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 
get_fs(void)30 static inline mm_segment_t get_fs(void)
31 {
32     return USER_DS;
33 }
34 
get_ds(void)35 static inline mm_segment_t get_ds(void)
36 {
37     /* return the supervisor data space code */
38     return KERNEL_DS;
39 }
40 
set_fs(mm_segment_t val)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 */
50