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Fix broken bit definitions for pte/pde.

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This commit is contained in:
David Greenman 1994-01-31 06:52:41 +00:00
parent d6eb591433
commit 0de1886721
1 changed files with 20 additions and 36 deletions
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56
sys/i386/include/pte.h
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@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)pte.h 5.5 (Berkeley) 5/9/91
* $Id: pte.h,v 1.2 1993/10/16 14:39:27 rgrimes Exp $
* $Id: pte.h,v 1.3 1993/11/07 17:43:05 wollman Exp $
*/
#ifndef _MACHINE_PTE_H_
@ -52,48 +52,32 @@
*/
#ifndef LOCORE
struct pde
{
struct pde {
unsigned int
pd_v:1, /* valid bit */
pd_prot:2, /* access control */
pd_mbz1:2, /* reserved, must be zero */
pd_ncpwt:1, /* page cache write through */
pd_ncpcd:1, /* page cache disable */
pd_u:1, /* hardware maintained 'used' bit */
:1, /* not used */
pd_m:1, /* not used */
pd_mbz2:2, /* reserved, must be zero */
:3, /* reserved for software */
pd_pfnum:20; /* physical page frame number of pte's*/
};
struct pte
{
struct pte {
unsigned int
pg_v:1, /* valid bit */
pg_prot:2, /* access control */
pg_mbz1:2, /* reserved, must be zero */
pg_ncpwt:1, /* page cache write through */
pg_ncpcd:1, /* page cache disable */
pg_u:1, /* hardware maintained 'used' bit */
pg_m:1, /* hardware maintained modified bit */
pg_mbz2:2, /* reserved, must be zero */
pg_fod:1, /* is fill on demand (=0) */
:1, /* must write back to swap (unused) */
pg_nc:1, /* 'uncacheable page' bit */
:3, /* (unused) */
pg_pfnum:20; /* physical page frame number */
};
struct hpte
{
unsigned int
pg_high:12, /* special for clustering */
pg_pfnum:20;
};
struct fpte
{
unsigned int
pg_v:1, /* valid bit */
pg_prot:2, /* access control */
:5,
pg_fileno:1, /* file mapped from or TEXT or ZERO */
pg_fod:1, /* is fill on demand (=1) */
pg_blkno:22; /* file system block number */
};
#endif
#define PD_MASK 0xffc00000 /* page directory address bits */
@ -101,17 +85,13 @@ unsigned int
#define PG_V 0x00000001
#define PG_PROT 0x00000006 /* all protection bits . */
#define PG_FOD 0x00000200
#define PG_SWAPM 0x00000400
#define PG_N 0x00000800 /* Non-cacheable */
#define PG_M 0x00000040
#define PG_U 0x00000020 /* not currently used */
#define PG_NC_PWT 0x00000008 /* page cache write through */
#define PG_NC_PCD 0x00000010 /* page cache disable */
#define PG_N 0x00000018 /* Non-cacheable */
#define PG_U 0x00000020 /* page was accessed */
#define PG_M 0x00000040 /* page was modified */
#define PG_FRAME 0xfffff000
#define PG_FZERO 0
#define PG_FTEXT 1
#define PG_FMAX (PG_FTEXT)
#define PG_NOACC 0
#define PG_KR 0x00000000
#define PG_KW 0x00000002
@ -119,6 +99,10 @@ unsigned int
#define PG_URKW 0x00000004
#define PG_UW 0x00000006
#define PG_FZERO 0
#define PG_FTEXT 1
#define PG_FMAX (PG_FTEXT)
/*
* Page Protection Exception bits
*/