135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* $NetBSD: kvm_vax.c,v 1.2 1995/04/25 15:41:11 ragge Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software developed by the Computer Systems
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* Engineering group at Lawrence Berkeley Laboratory under DARPA contract
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* BG 91-66 and contributed to Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* VAX machine dependent routines for kvm. Hopefully, the forthcoming
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* vm code will one day obsolete this module. Furthermore, I hope it
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* gets here soon, because this basically is an error stub! (sorry)
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* This code may not work anyway.
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*/
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#include <sys/param.h>
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#include <sys/user.h>
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#include <sys/proc.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <nlist.h>
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#include <kvm.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <limits.h>
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#include <db.h>
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#include "kvm_private.h"
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struct vmstate {
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u_long end;
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};
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void
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_kvm_freevtop(kd)
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kvm_t *kd;
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{
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if (kd->vmst != 0)
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free(kd->vmst);
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}
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int
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_kvm_initvtop(kd)
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kvm_t *kd;
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{
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register int i;
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register int off;
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register struct vmstate *vm;
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struct stat st;
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struct nlist nlist[2];
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vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
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if (vm == 0)
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return (-1);
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kd->vmst = vm;
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if (fstat(kd->pmfd, &st) < 0)
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return (-1);
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/* Get end of kernel address */
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nlist[0].n_name = "_end";
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nlist[1].n_name = 0;
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if (kvm_nlist(kd, nlist) != 0) {
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_kvm_err(kd, kd->program, "pmap_stod: no such symbol");
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return (-1);
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}
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vm->end = (u_long)nlist[0].n_value;
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return (0);
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}
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#define VA_OFF(va) (va & (NBPG - 1))
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/*
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* Translate a kernel virtual address to a physical address using the
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* mapping information in kd->vm. Returns the result in pa, and returns
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* the number of bytes that are contiguously available from this
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* physical address. This routine is used only for crashdumps.
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*/
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int
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_kvm_kvatop(kd, va, pa)
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kvm_t *kd;
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u_long va;
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u_long *pa;
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{
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register int end;
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if (va < KERNBASE) {
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_kvm_err(kd, 0, "invalid address (%x<%x)", va, KERNBASE);
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return (0);
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}
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end = kd->vmst->end;
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if (va >= end) {
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_kvm_err(kd, 0, "invalid address (%x>=%x)", va, end);
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return (0);
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}
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*pa = (va - KERNBASE);
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return (end - va);
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}
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