#ifndef _M68K_SEGMENT_H#define _M68K_SEGMENT_H /* define constants *//* Address spaces (FC0-FC2) */#define USER_DATA     (1)#ifndef __USER_DS#define __USER_DS     (USER_DATA)#endif#define USER_PROGRAM  (2)#define SUPER_DATA    (5)#ifndef __KERNEL_DS#define __KERNEL_DS   (SUPER_DATA)#endif#define SUPER_PROGRAM (6)#define CPU_SPACE     (7) #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){	mm_segment_t _v;	__asm__ ("movec %/dfc,%0":"=r" (_v.seg):); 	return _v;} 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){	__asm__ __volatile__ ("movec %0,%/sfc\n\t"			      "movec %0,%/dfc\n\t"			      : /* no outputs */ : "r" (val.seg) : "memory");} #define segment_eq(a,b)	((a).seg == (b).seg) #endif /* __ASSEMBLY__ */ #endif /* _M68K_SEGMENT_H */