159 lines
4.1 KiB
C
159 lines
4.1 KiB
C
/* $NetBSD: kvm_vax.c,v 1.18 2010/09/20 23:23:16 jym 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. 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 <sys/types.h>
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#include <unistd.h>
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#include <nlist.h>
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#include <stdlib.h>
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#include <kvm.h>
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#include <uvm/uvm_extern.h>
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#include <machine/vmparam.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(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(kvm_t *kd)
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{
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struct vmstate *vm;
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struct stat st;
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struct nlist nl[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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nl[0].n_name = "_end";
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nl[1].n_name = 0;
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if (kvm_nlist(kd, nl) != 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)nl[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 crash dumps.
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*/
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int
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_kvm_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa)
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{
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u_long end;
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if (va < (u_long) KERNBASE) {
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_kvm_err(kd, 0, "invalid address (%#"PRIxVADDR"<%lx)", va,
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(u_long)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 (%#"PRIxVADDR"<%lx)", va,
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end);
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return (0);
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}
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*pa = (va - (u_long) KERNBASE);
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return (end - va);
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}
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/*
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* Translate a physical address to a file-offset in the crash dump.
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* XXX - crash dump doesn't work anyway.
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*/
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off_t
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_kvm_pa2off(kvm_t *kd, paddr_t pa)
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{
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return(kd->dump_off + pa);
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}
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/*
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* Machine-dependent initialization for ALL open kvm descriptors,
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* not just those for a kernel crash dump. Some architectures
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* have to deal with these NOT being constants! (i.e. m68k)
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*/
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int
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_kvm_mdopen(kvm_t *kd)
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{
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kd->usrstack = USRSTACK;
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kd->min_uva = VM_MIN_ADDRESS;
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kd->max_uva = VM_MAXUSER_ADDRESS;
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return (0);
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}
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