linux-sg2042/include/asm-h8300/segment.h

50 lines
904 B
C

#ifndef _H8300_SEGMENT_H
#define _H8300_SEGMENT_H
/* define constants */
#define USER_DATA (1)
#ifndef __USER_DS
#define __USER_DS (USER_DATA)
#endif
#define USER_PROGRAM (2)
#define SUPER_DATA (3)
#ifndef __KERNEL_DS
#define __KERNEL_DS (SUPER_DATA)
#endif
#define SUPER_PROGRAM (4)
#ifndef __ASSEMBLY__
typedef struct {
unsigned long seg;
} mm_segment_t;
#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
#define USER_DS MAKE_MM_SEG(__USER_DS)
#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS)
/*
* Get/set the SFC/DFC registers for MOVES instructions
*/
static inline mm_segment_t get_fs(void)
{
return USER_DS;
}
static inline mm_segment_t get_ds(void)
{
/* return the supervisor data space code */
return KERNEL_DS;
}
static inline void set_fs(mm_segment_t val)
{
}
#define segment_eq(a,b) ((a).seg == (b).seg)
#endif /* __ASSEMBLY__ */
#endif /* _H8300_SEGMENT_H */