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/* $OpenBSD: kvm_vax.c,v 1.10 2004/07/01 02:04:10 mickey Exp $ */
/* $NetBSD: kvm_vax.c,v 1.3 1996/03/18 22:34:06 thorpej Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software developed by the Computer Systems
* Engineering group at Lawrence Berkeley Laboratory under DARPA contract
* BG 91-66 and contributed to Berkeley.
*
* 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. 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.
*/
/*
* VAX machine dependent routines for kvm. Hopefully, the forthcoming
* vm code will one day obsolete this module. Furthermore, I hope it
* gets here soon, because this basically is an error stub! (sorry)
* This code may not work anyway.
*/
#include <sys/param.h>
#include <sys/user.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <unistd.h>
#include <nlist.h>
#include <kvm.h>
#include <uvm/uvm_extern.h>
#include <machine/vmparam.h>
#include <machine/pmap.h>
#include <limits.h>
#include <db.h>
#include "kvm_private.h"
struct vmstate {
u_long end;
};
void
_kvm_freevtop(kvm_t *kd)
{
if (kd->vmst != NULL) {
free(kd->vmst);
kd->vmst = NULL;
}
}
int
_kvm_initvtop(kvm_t *kd)
{
struct nlist nlist[2];
struct vmstate *vm;
struct stat st;
int i, off;
vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
if (vm == 0)
return (-1);
kd->vmst = vm;
if (fstat(kd->pmfd, &st) < 0)
return (-1);
/* Get end of kernel address */
nlist[0].n_name = "_end";
nlist[1].n_name = 0;
if (kvm_nlist(kd, nlist) != 0) {
_kvm_err(kd, kd->program, "pmap_stod: no such symbol");
return (-1);
}
vm->end = (u_long)nlist[0].n_value;
return (0);
}
#define VA_OFF(va) (va & (NBPG - 1))
/*
* Translate a kernel virtual address to a physical address using the
* mapping information in kd->vm. Returns the result in pa, and returns
* the number of bytes that are contiguously available from this
* physical address. This routine is used only for crashdumps.
*/
int
_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa)
{
u_long end;
if (va < KERNBASE) {
_kvm_err(kd, 0, "invalid address (%lx<%lx)", va, KERNBASE);
return (0);
}
if (!kd->vmst) {
_kvm_err(kd, 0, "vatop called before initvtop");
return (0);
}
end = kd->vmst->end;
if (va >= end) {
_kvm_err(kd, 0, "invalid address (%lx>=%lx)", va, end);
return (0);
}
*pa = (va - KERNBASE);
return (end - va);
}
/*
* Translate a physical address to an offset in the crash dump
* XXX crashdumps not working yet anyway
*/
off_t
_kvm_pa2off(kvm_t *kd, u_long pa)
{
return (kd->dump_off+pa);
}
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