segment.h

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#ifndef _ASM_SCORE_SEGMENT_H
#define _ASM_SCORE_SEGMENT_H

#ifndef __ASSEMBLY__

typedef struct {
    unsigned long seg;
} mm_segment_t;

#define KERNEL_DS   ((mm_segment_t){0})
#define USER_DS KERNEL_DS

# define get_ds()   (KERNEL_DS)
# define get_fs()   (current_thread_info()->addr_limit)
# define set_fs(x)  \
    do { current_thread_info()->addr_limit = (x); } while (0)

# define segment_eq(a, b)   ((a).seg == (b).seg)

# endif /* __ASSEMBLY__ */
#endif /* _ASM_SCORE_SEGMENT_H */