[unix-history] / usr / src / sys / i386 / include / specialreg.h

/*
 * 386 Special registers:
 */

#define	CR0_PE	0x00000001	/* Protected mode Enable */
#define	CR0_MP	0x00000002	/* "Math" Present (e.g. npx), wait for it */
#define	CR0_EM	0x00000004	/* EMulate NPX, e.g. trap, don't execute code */
#define	CR0_TS	0x00000008	/* Process has done Task Switch, do NPX save */
#define	CR0_ET	0x00000010	/* 32 bit (if set) vs 16 bit (387 vs 287) */
#define	CR0_PG	0x80000000	/* Paging Enable */
Commit	Line	Data
c719a9ba WN	1	/*
	2	* 386 Special registers:
	3	*/
	4
	5	#define CR0_PE 0x00000001 /* Protected mode Enable */
	6	#define CR0_MP 0x00000002 /* "Math" Present (e.g. npx), wait for it */
	7	#define CR0_EM 0x00000004 /* EMulate NPX, e.g. trap, don't execute code */
	8	#define CR0_TS 0x00000008 /* Process has done Task Switch, do NPX save */
	9	#define CR0_ET 0x00000010 /* 32 bit (if set) vs 16 bit (387 vs 287) */
	10	#define CR0_PG 0x80000000 /* Paging Enable */