314 lines
8.4 KiB
C
314 lines
8.4 KiB
C
/* $NetBSD: kvm_m68k_cmn.c,v 1.5 1997/08/26 08:21:40 kleink Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
|
|
* Copyright (c) 1989, 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. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
|
|
#else
|
|
__RCSID("$NetBSD: kvm_m68k_cmn.c,v 1.5 1997/08/26 08:21:40 kleink Exp $");
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* Common m68k machine dependent routines for kvm.
|
|
*
|
|
* Note: This file has to build on ALL m68k machines,
|
|
* so do NOT include any <machine/*.h> files here.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/kcore.h>
|
|
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <nlist.h>
|
|
#include <kvm.h>
|
|
#include <db.h>
|
|
|
|
#include <m68k/cpu.h>
|
|
#include <m68k/kcore.h>
|
|
|
|
#include "kvm_private.h"
|
|
#include "kvm_m68k.h"
|
|
|
|
int _kvm_cmn_initvtop __P((kvm_t *));
|
|
void _kvm_cmn_freevtop __P((kvm_t *));
|
|
int _kvm_cmn_kvatop __P((kvm_t *, u_long, u_long *));
|
|
off_t _kvm_cmn_pa2off __P((kvm_t *, u_long));
|
|
|
|
struct kvm_ops _kvm_ops_cmn = {
|
|
_kvm_cmn_initvtop,
|
|
_kvm_cmn_freevtop,
|
|
_kvm_cmn_kvatop,
|
|
_kvm_cmn_pa2off };
|
|
|
|
static int vatop_030 __P((kvm_t *, u_int32_t, u_long, u_long *));
|
|
static int vatop_040 __P((kvm_t *, u_int32_t, u_long, u_long *));
|
|
|
|
#define _kvm_btop(v, a) (((unsigned)(a)) >> (v)->pgshift)
|
|
|
|
#define KREAD(kd, addr, p)\
|
|
(kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
|
|
|
|
void
|
|
_kvm_cmn_freevtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
/* No private state information to keep. */
|
|
}
|
|
|
|
int
|
|
_kvm_cmn_initvtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
/* No private state information to keep. */
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
_kvm_cmn_kvatop(kd, va, pa)
|
|
kvm_t *kd;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
cpu_kcore_hdr_t *h = kd->cpu_data;
|
|
struct m68k_kcore_hdr *m = &h->un._m68k;
|
|
struct vmstate *vm = kd->vmst;
|
|
int (*vtopf) __P((kvm_t *, u_int32_t, u_long, u_long *));
|
|
|
|
if (ISALIVE(kd)) {
|
|
_kvm_err(kd, 0, "vatop called in live kernel!");
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* 68040 and 68060 use same translation functions,
|
|
* as do 68030, 68851, HP MMU.
|
|
*/
|
|
if (m->mmutype == MMU_68040 || m->mmutype == MMU_68060)
|
|
vtopf = vatop_040;
|
|
else
|
|
vtopf = vatop_030;
|
|
|
|
return ((*vtopf)(kd, m->sysseg_pa, va, pa));
|
|
}
|
|
|
|
/*
|
|
* Translate a physical address to a file-offset in the crash-dump.
|
|
*/
|
|
off_t
|
|
_kvm_cmn_pa2off(kd, pa)
|
|
kvm_t *kd;
|
|
u_long pa;
|
|
{
|
|
cpu_kcore_hdr_t *h = kd->cpu_data;
|
|
struct m68k_kcore_hdr *m = &h->un._m68k;
|
|
phys_ram_seg_t *rsp;
|
|
off_t off;
|
|
int i;
|
|
|
|
off = 0;
|
|
rsp = m->ram_segs;
|
|
for (i = 0; i < M68K_NPHYS_RAM_SEGS && rsp[i].size != 0; i++) {
|
|
if (pa >= rsp[i].start &&
|
|
pa < (rsp[i].start + rsp[i].size)) {
|
|
pa -= rsp[i].start;
|
|
break;
|
|
}
|
|
off += rsp[i].size;
|
|
}
|
|
return (kd->dump_off + off + pa);
|
|
}
|
|
|
|
/*****************************************************************
|
|
* Local stuff...
|
|
*/
|
|
|
|
static int
|
|
vatop_030(kd, stpa, va, pa)
|
|
kvm_t *kd;
|
|
u_int32_t stpa;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
cpu_kcore_hdr_t *h = kd->cpu_data;
|
|
struct m68k_kcore_hdr *m = &h->un._m68k;
|
|
struct vmstate *vm = kd->vmst;
|
|
u_long addr;
|
|
u_int32_t ste, pte;
|
|
u_int p, offset;
|
|
|
|
offset = va & vm->pgofset;
|
|
|
|
/*
|
|
* We may be called before address translation is initialized.
|
|
* This is typically used to find the dump magic number. This
|
|
* means we do not yet have the kernel page tables available,
|
|
* so we must to a simple relocation.
|
|
*/
|
|
if (va < m->relocend) {
|
|
*pa = (va - h->kernbase) + m->reloc;
|
|
return (h->page_size - offset);
|
|
}
|
|
|
|
addr = stpa + ((va >> m->sg_ishift) * sizeof(u_int32_t));
|
|
|
|
/*
|
|
* Can't use KREAD to read kernel segment table entries.
|
|
* Fortunately it is 1-to-1 mapped so we don't have to.
|
|
*/
|
|
if (stpa == m->sysseg_pa) {
|
|
if (lseek(kd->pmfd, _kvm_cmn_pa2off(kd, addr), 0) == -1 ||
|
|
read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
|
|
goto invalid;
|
|
} else if (KREAD(kd, addr, &ste))
|
|
goto invalid;
|
|
if ((ste & m->sg_v) == 0) {
|
|
_kvm_err(kd, 0, "invalid segment (%x)", ste);
|
|
return(0);
|
|
}
|
|
p = _kvm_btop(vm, va & m->sg_pmask);
|
|
addr = (ste & m->sg_frame) + (p * sizeof(u_int32_t));
|
|
|
|
/*
|
|
* Address from STE is a physical address so don't use kvm_read.
|
|
*/
|
|
if (lseek(kd->pmfd, _kvm_cmn_pa2off(kd, addr), 0) == -1 ||
|
|
read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0)
|
|
goto invalid;
|
|
addr = pte & m->pg_frame;
|
|
if ((pte & m->pg_v) == 0) {
|
|
_kvm_err(kd, 0, "page not valid");
|
|
return (0);
|
|
}
|
|
*pa = addr + offset;
|
|
|
|
return (h->page_size - offset);
|
|
invalid:
|
|
_kvm_err(kd, 0, "invalid address (%x)", va);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
vatop_040(kd, stpa, va, pa)
|
|
kvm_t *kd;
|
|
u_int32_t stpa;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
cpu_kcore_hdr_t *h = kd->cpu_data;
|
|
struct m68k_kcore_hdr *m = &h->un._m68k;
|
|
struct vmstate *vm = kd->vmst;
|
|
u_long addr;
|
|
u_int32_t stpa2;
|
|
u_int32_t ste, pte;
|
|
u_int p, offset;
|
|
|
|
offset = va & vm->pgofset;
|
|
|
|
/*
|
|
* We may be called before address translation is initialized.
|
|
* This is typically used to find the dump magic number. This
|
|
* means we do not yet have the kernel page tables available,
|
|
* so we must to a simple relocation.
|
|
*/
|
|
if (va < m->relocend) {
|
|
*pa = (va - h->kernbase) + m->reloc;
|
|
return (h->page_size - offset);
|
|
}
|
|
|
|
addr = stpa + ((va >> m->sg40_shift1) * sizeof(u_int32_t));
|
|
|
|
/*
|
|
* Can't use KREAD to read kernel segment table entries.
|
|
* Fortunately it is 1-to-1 mapped so we don't have to.
|
|
*/
|
|
if (stpa == m->sysseg_pa) {
|
|
if (lseek(kd->pmfd, _kvm_cmn_pa2off(kd, addr), 0) == -1 ||
|
|
read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
|
|
goto invalid;
|
|
} else if (KREAD(kd, addr, &ste))
|
|
goto invalid;
|
|
if ((ste & m->sg_v) == 0) {
|
|
_kvm_err(kd, 0, "invalid level 1 descriptor (%x)",
|
|
ste);
|
|
return((off_t)0);
|
|
}
|
|
stpa2 = (ste & m->sg40_addr1);
|
|
addr = stpa2 + (((va & m->sg40_mask2) >> m->sg40_shift2) *
|
|
sizeof(u_int32_t));
|
|
|
|
/*
|
|
* Address from level 1 STE is a physical address,
|
|
* so don't use kvm_read.
|
|
*/
|
|
if (lseek(kd->pmfd, _kvm_cmn_pa2off(kd, addr), 0) == -1 ||
|
|
read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
|
|
goto invalid;
|
|
if ((ste & m->sg_v) == 0) {
|
|
_kvm_err(kd, 0, "invalid level 2 descriptor (%x)",
|
|
ste);
|
|
return((off_t)0);
|
|
}
|
|
stpa2 = (ste & m->sg40_addr2);
|
|
addr = stpa2 + (((va & m->sg40_mask3) >> m->sg40_shift3) *
|
|
sizeof(u_int32_t));
|
|
|
|
/*
|
|
* Address from STE is a physical address so don't use kvm_read.
|
|
*/
|
|
if (lseek(kd->pmfd, _kvm_cmn_pa2off(kd, addr), 0) == -1 ||
|
|
read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0)
|
|
goto invalid;
|
|
addr = pte & m->pg_frame;
|
|
if ((pte & m->pg_v) == 0) {
|
|
_kvm_err(kd, 0, "page not valid");
|
|
return (0);
|
|
}
|
|
*pa = addr + offset;
|
|
|
|
return (h->page_size - offset);
|
|
|
|
invalid:
|
|
_kvm_err(kd, 0, "invalid address (%x)", va);
|
|
return (0);
|
|
}
|