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BSD 4_3_Tahoe release
[unix-history]
/
usr
/
src
/
sys
/
vax
/
pte.h
diff --git
a/usr/src/sys/vax/pte.h
b/usr/src/sys/vax/pte.h
index
86d0987
..
39b6e34
100644
(file)
--- a/
usr/src/sys/vax/pte.h
+++ b/
usr/src/sys/vax/pte.h
@@
-3,7
+3,7
@@
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
- * @(#)pte.h 7.
1 (Berkeley) 6/5/86
+ * @(#)pte.h 7.
4 (Berkeley) 5/2/88
*/
/*
*/
/*
@@
-22,7
+22,7
@@
struct pte
unsigned int pg_pfnum:21, /* core page frame number or 0 */
:2,
pg_vreadm:1, /* modified since vread (or with _m) */
unsigned int pg_pfnum:21, /* core page frame number or 0 */
:2,
pg_vreadm:1, /* modified since vread (or with _m) */
- pg_swapm:1, /* have to write back to swap */
+ :1,
pg_fod:1, /* is fill on demand (=0) */
pg_m:1, /* hardware maintained modified bit */
pg_prot:4, /* access control */
pg_fod:1, /* is fill on demand (=0) */
pg_m:1, /* hardware maintained modified bit */
pg_prot:4, /* access control */
@@
-66,12
+66,15
@@
unsigned int pg_blkno:24, /* file system block number */
/*
* Pte related macros
*/
/*
* Pte related macros
*/
-#define dirty(pte) ((pte)->pg_fod == 0 && (pte)->pg_pfnum && \
- ((pte)->pg_m || (pte)->pg_swapm))
+#define dirty(pte) ((pte)->pg_m)
-#ifndef LOCORE
-#ifdef KERNEL
+/*
+ * Kernel virtual address to page table entry and to physical address.
+ */
+#define kvtopte(va) (&Sysmap[((unsigned)(va) &~ KERNBASE) >> PGSHIFT])
+#define kvtophys(x) ((kvtopte(x)->pg_pfnum << PGSHIFT) | ((int)(x) & PGOFSET))
+#if defined(KERNEL) && !defined(LOCORE)
/* utilities defined in locore.s */
extern struct pte Sysmap[];
extern struct pte Usrptmap[];
/* utilities defined in locore.s */
extern struct pte Sysmap[];
extern struct pte Usrptmap[];
@@
-84,12
+87,9
@@
extern struct pte Pushmap[];
extern struct pte Vfmap[];
extern struct pte mmap[];
extern struct pte msgbufmap[];
extern struct pte Vfmap[];
extern struct pte mmap[];
extern struct pte msgbufmap[];
-extern struct pte
camap
[];
+extern struct pte
kmempt[], ekmempt
[];
extern struct pte Nexmap[][16];
extern struct pte Nexmap[][16];
+#if VAX8600
extern struct pte Ioamap[][1];
extern struct pte Ioamap[][1];
-#ifdef VAX630
-extern struct pte Clockmap[];
-extern struct pte Ka630map[];
-#endif
-#endif
#endif
#endif
+#endif /* defined(KERNEL) && !defined(LOCORE) */