[unix-history] / usr / src / sys / h / psl.h

/*	psl.h	4.1	11/9/80	*/

/*
 * VAX program status longword
 */

#define	PSL_C		0x1		/* carry bit */
#define	PSL_V		0x2		/* overflow bit */
#define	PSL_Z		0x4		/* zero bit */
#define	PSL_N		0x8		/* negative bit */
#define	PSL_ALLCC	0xf		/* all cc bits - unlikely */
#define	PSL_T		0x10		/* trace enable bit */
#define	PSL_IV		0x20		/* integer overflow enable bit */
#define	PSL_FU		0x40		/* floating point underflow enable */
#define	PSL_DV		0x80		/* decimal overflow enable bit */
#define	PSL_IPL		0x1f0000	/* interrupt priority level */
#define	PSL_PRVMOD	0xc00000	/* previous mode (all on is user) */
#define	PSL_CURMOD	0x3000000	/* current mode (all on is user) */
#define	PSL_IS		0x4000000	/* interrupt stack */
#define	PSL_FPD		0x8000000	/* first part done */
#define	PSL_TP		0x40000000	/* trace pending */
#define	PSL_CM		0x80000000	/* compatibility mode */
#define	PSL_USERCLR	0x3c20ff00	/* bits must be clear in user mode */
Commit	Line	Data
28275b1e BJ	1	/* psl.h 4.1 11/9/80 */
	2
	3	/*
	4	* VAX program status longword
	5	*/
	6
	7	#define PSL_C 0x1 /* carry bit */
	8	#define PSL_V 0x2 /* overflow bit */
	9	#define PSL_Z 0x4 /* zero bit */
	10	#define PSL_N 0x8 /* negative bit */
	11	#define PSL_ALLCC 0xf /* all cc bits - unlikely */
	12	#define PSL_T 0x10 /* trace enable bit */
	13	#define PSL_IV 0x20 /* integer overflow enable bit */
	14	#define PSL_FU 0x40 /* floating point underflow enable */
	15	#define PSL_DV 0x80 /* decimal overflow enable bit */
	16	#define PSL_IPL 0x1f0000 /* interrupt priority level */
	17	#define PSL_PRVMOD 0xc00000 /* previous mode (all on is user) */
	18	#define PSL_CURMOD 0x3000000 /* current mode (all on is user) */
	19	#define PSL_IS 0x4000000 /* interrupt stack */
	20	#define PSL_FPD 0x8000000 /* first part done */
	21	#define PSL_TP 0x40000000 /* trace pending */
	22	#define PSL_CM 0x80000000 /* compatibility mode */
	23	#define PSL_USERCLR 0x3c20ff00 /* bits must be clear in user mode */