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| -rw-r--r-- | sys/i386/include/pte.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/sys/i386/include/pte.h b/sys/i386/include/pte.h deleted file mode 100644 index ba3621321309..000000000000 --- a/sys/i386/include/pte.h +++ /dev/null @@ -1,131 +0,0 @@ -/*- - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * William Jolitz. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * from: @(#)pte.h 5.5 (Berkeley) 5/9/91 - * $Id: pte.h,v 1.8 1995/05/30 08:00:49 rgrimes Exp $ - */ - -#ifndef _MACHINE_PTE_H_ -#define _MACHINE_PTE_H_ 1 - -/* - * 386 page table entry and page table directory - * W.Jolitz, 8/89 - * - * There are two major kinds of pte's: those which have ever existed (and are - * thus either now in core or on the swap device), and those which have - * never existed, but which will be filled on demand at first reference. - * There is a structure describing each. There is also an ancillary - * structure used in page clustering. - */ - -#ifndef LOCORE - -struct pde { -unsigned int - pd_v:1, /* valid bit */ - pd_prot:2, /* access control */ - pd_ncpwt:1, /* page cache write through */ - pd_ncpcd:1, /* page cache disable */ - pd_u:1, /* hardware maintained 'used' bit */ - 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 { -unsigned int - pg_v:1, /* valid bit */ - pg_prot:2, /* access control */ - 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 */ - :3, /* (unused) */ - pg_pfnum:20; /* physical page frame number */ -}; -#endif - -#define PD_MASK 0xffc00000 /* page directory address bits */ -#define PD_SHIFT 22 /* page directory address bits */ -#define PT_MASK 0x003ff000UL /* page table address bits */ -#define PG_SHIFT 12 /* page table address shift */ - -#define PG_V 0x00000001 -#define PG_RW 0x00000002 -#define PG_u 0x00000004 -#define PG_PROT 0x00000006 /* all protection bits . */ -#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_W 0x00000200 /* "Wired" pseudoflag */ -#define PG_FRAME 0xfffff000 - -#define PG_NOACC 0 -#define PG_KR 0x00000000 -#define PG_KW 0x00000002 -#define PG_URKR 0x00000004 -#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 - */ - -#define PGEX_P 0x01 /* Protection violation vs. not present */ -#define PGEX_W 0x02 /* during a Write cycle */ -#define PGEX_U 0x04 /* access from User mode (UPL) */ - -/* - * Pte related macros - */ -#define dirty(pte) ((pte) & PG_M) -#define VADDR(pdi, pti) ((vm_offset_t)(((pdi)<<PD_SHIFT)|((pti)<<PG_SHIFT))) - -#ifndef LOCORE -#ifdef KERNEL -/* utilities defined in pmap.c */ -extern struct pte *Sysmap; -#endif -#endif -#endif /* _MACHINE_PTE_H_ */ |