text: #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 */
  