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	#define SEGEX_EXT 0x01 /* recursive or externally induced */			#define SEGEX_EXT 0x01 /* recursive or externally induced */
	#define SEGEX_IDT 0x02 /* interrupt descriptor table */			#define SEGEX_IDT 0x02 /* interrupt descriptor table */
	#define SEGEX_TI 0x04 /* local descriptor table */			#define SEGEX_TI 0x04 /* local descriptor table */
	/* other bits are affected descriptor index */			/* other bits are affected descriptor index */
	#define SEGEX_IDX(s) (((s)>>3)&0x1fff)			#define SEGEX_IDX(s) (((s)>>3)&0x1fff)

	#ifdef _KERNEL			#ifdef _KERNEL
	extern int _default_ldt;			extern int _default_ldt;
	extern union descriptor gdt[];			extern union descriptor *gdt;
	extern union descriptor ldt[NLDT];			extern union descriptor *ldt;
	extern struct soft_segment_descriptor gdt_segs[];			extern struct soft_segment_descriptor gdt_segs[];
	extern struct gate_descriptor *idt;			extern struct gate_descriptor *idt;
	extern struct region_descriptor r_gdt, r_idt;

	void lgdt(struct region_descriptor *rdp);			void lgdt(struct region_descriptor *rdp);
	void sdtossd(struct segment_descriptor *sdp,			void sdtossd(struct segment_descriptor *sdp,
	struct soft_segment_descriptor *ssdp);			struct soft_segment_descriptor *ssdp);
	void ssdtosd(struct soft_segment_descriptor *ssdp,			void ssdtosd(struct soft_segment_descriptor *ssdp,
	struct segment_descriptor *sdp);			struct segment_descriptor *sdp);
	#endif /* _KERNEL */			#endif /* _KERNEL */

	#endif /* !_MACHINE_SEGMENTS_H_ */			#endif /* !_MACHINE_SEGMENTS_H_ */