#sccs	"@(#)uts/kern/sys:cmap.h	1.1"

/*	Convergent Technologies - System V - May 1983	*/
/* modified to remove MHASH stuff		*/
/* modified for kernel shared lib - 6/1/84 BG	*/

#ifndef cmap_h
#define cmap_h

/*
 * core map entry
 */
struct cmap
{
unsigned int	c_next:12,	/* index of next free list entry */
		c_prev:12,	/* index of previous free list entry */
				/*--------- byte 3 --------------------*/
		c_lock:1,	/* locked for raw i/o or pagein */
		c_want:1,	/* wanted */
		c_intrans:1,	/* intransit bit */
		c_free:1,	/* on the free list */
		c_gone:1,	/* associated page has been released */
		c_type:3,	/* type CSYS,CTEXT,CSTACK,CDATA,CKVMEM */
				/*--------- byte 4 --------------------*/
		c_pgacc:2,	/* access status of the physical page */
		c_dummy:2,
		c_page:12,	/* virtual page number in segment */
				/*--------- byte 6 --------------------*/
		c_reserve:6,	/* reserved */
		c_ndx:10;	/* when valid, contains index of owner proc */
				/* or text. The file inode no is in either  */
				/* proc or text.  */
				/* when invalid, contains file inode no */
};

#define	CMHEAD	0

extern struct	cmap *cmap;
extern struct	cmap *ecmap;
extern int	ncmap;

/* bits defined in c_type */

#define	CSYS		0		/* none of below */
#define	CTEXT		1		/* belongs to shared text segment */
#define	CDATA		2		/* belongs to data segment */
#define	CSTACK		3		/* belongs to stack segment */
#define CKVMEM		4		/* kernel virtual memory */
#define CLDATA		5		/* shared lib data */
#define	CLTEXT		6		/* shared lib text */

/*
 * pgtocm, cmtopg now subroutines in machdep.c - BG 8/24/84
 *
 * #define	pgtocm(x)	((short)((x) - firstfree + 1))
 * #define	cmtopg(x)	((x) -1 + firstfree)
 *
 */
#endif cmap_h