global.h

自己动手写操作系统的随书光盘

/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                            global.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                                                    Forrest Yu, 2005
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

/* EXTERN is defined as extern except in global.c */
#ifdef	GLOBAL_VARIABLES_HERE
#undef	EXTERN
#define	EXTERN
#endif

EXTERN	int			disp_pos;
EXTERN	t_8			gdt_ptr[6];	// 0~15:Limit  16~47:Base
EXTERN	DESCRIPTOR		gdt[GDT_SIZE];
EXTERN	t_8			idt_ptr[6];	// 0~15:Limit  16~47:Base
EXTERN	GATE			idt[IDT_SIZE];