#ifndef __ASM_SH_SEGMENT_H#define __ASM_SH_SEGMENT_H #ifndef __ASSEMBLY__ typedef struct {	unsigned long seg;} mm_segment_t; #define MAKE_MM_SEG(s)	((mm_segment_t) { (s) }) /* * The fs value determines whether argument validity checking should be * performed or not.  If get_fs() == USER_DS, checking is performed, with * get_fs() == KERNEL_DS, checking is bypassed. * * For historical reasons, these macros are grossly misnamed. */#define KERNEL_DS	MAKE_MM_SEG(0xFFFFFFFFUL)#ifdef CONFIG_MMU#define USER_DS		MAKE_MM_SEG(PAGE_OFFSET)#else#define USER_DS		KERNEL_DS#endif #define segment_eq(a,b)	((a).seg == (b).seg) #define get_ds()	(KERNEL_DS) #define get_fs()	(current_thread_info()->addr_limit)#define set_fs(x)	(current_thread_info()->addr_limit = (x)) #endif /* __ASSEMBLY__ */#endif /* __ASM_SH_SEGMENT_H */