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/* $NetBSD: kvm_m68k.c,v 1.19 2014/01/27 21:00:01 matt Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross and Jason R. Thorpe.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Run-time kvm dispatcher for m68k machines.
* The actual MD code is in the files:
* kvm_m68k_cmn.c kvm_sun3.c ...
*
* Note: This file has to build on ALL m68k machines,
* so do NOT include any <machine/[*].h> files here.
*/
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/kcore.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <nlist.h>
#include <kvm.h>
#include <db.h>
#include <m68k/kcore.h>
#include "kvm_private.h"
#include "kvm_m68k.h"
__RCSID("$NetBSD: kvm_m68k.c,v 1.19 2014/01/27 21:00:01 matt Exp $");
struct name_ops {
const char *name;
struct kvm_ops *ops;
};
/*
* Match specific kcore types first, falling into a default.
*/
static struct name_ops optbl[] = {
{ "sun2", &_kvm_ops_sun2 },
{ "sun3", &_kvm_ops_sun3 },
{ "sun3x", &_kvm_ops_sun3x },
{ NULL, &_kvm_ops_cmn },
};
/*
* Prepare for translation of kernel virtual addresses into offsets
* into crash dump files. This is where we do the dispatch work.
*/
int
_kvm_initvtop(kvm_t *kd)
{
cpu_kcore_hdr_t *h;
struct name_ops *nop;
struct vmstate *vm;
vm = (struct vmstate *)_kvm_malloc(kd, sizeof (*vm));
if (vm == 0)
return (-1);
kd->vmst = vm;
/*
* Use the machine name in the kcore header to determine
* our ops vector. When we reach an ops vector with
* no name, we've found a default.
*/
h = kd->cpu_data;
h->name[sizeof(h->name) - 1] = '\0'; /* sanity */
for (nop = optbl; nop->name != NULL; nop++)
if (strcmp(nop->name, h->name) == 0)
break;
vm->ops = nop->ops;
/*
* Compute pgshift and pgofset.
*/
for (vm->pgshift = 0; (1 << vm->pgshift) < h->page_size; vm->pgshift++)
/* nothing */ ;
if ((1 << vm->pgshift) != h->page_size)
goto bad;
vm->pgofset = h->page_size - 1;
if ((vm->ops->initvtop)(kd) < 0)
goto bad;
return (0);
bad:
kd->vmst = NULL;
free(vm);
return (-1);
}
void
_kvm_freevtop(kvm_t *kd)
{
(kd->vmst->ops->freevtop)(kd);
free(kd->vmst);
}
int
_kvm_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pap)
{
return ((kd->vmst->ops->kvatop)(kd, va, pap));
}
off_t
_kvm_pa2off(kvm_t *kd, paddr_t pa)
{
return ((kd->vmst->ops->pa2off)(kd, pa));
}
/*
* Machine-dependent initialization for ALL open kvm descriptors,
* not just those for a kernel crash dump. Some architectures
* have to deal with these NOT being constants! (i.e. m68k)
*/
int
_kvm_mdopen(kvm_t *kd)
{
u_long max_uva;
extern struct ps_strings *__ps_strings;
#if 0 /* XXX - These vary across m68k machines... */
kd->usrstack = USRSTACK;
kd->min_uva = VM_MIN_ADDRESS;
kd->max_uva = VM_MAXUSER_ADDRESS;
#endif
/* This is somewhat hack-ish, but it works. */
max_uva = (u_long) (__ps_strings + 1);
kd->usrstack = max_uva;
kd->max_uva = max_uva;
kd->min_uva = 0;
return (0);
}
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