b6c0c9a270
by the crash dump itself to facilitate cross-analysis. The m68k_cmn for Utah pmaps reads MMU configuration from the crash dump to that this works on 4k and 8k h/w page size systems.
192 lines
5.4 KiB
C
192 lines
5.4 KiB
C
/* $NetBSD: kvm_sun3.c,v 1.6 1997/04/09 21:15:58 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. 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.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)kvm_sparc.c 8.1 (Berkeley) 6/4/93";
|
|
#else
|
|
static char *rcsid = "$NetBSD: kvm_sun3.c,v 1.6 1997/04/09 21:15:58 thorpej Exp $";
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* Sun3 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/kcore.h>
|
|
|
|
#include "kvm_private.h"
|
|
#include "kvm_m68k.h"
|
|
|
|
int _kvm_sun3_initvtop __P((kvm_t *));
|
|
void _kvm_sun3_freevtop __P((kvm_t *));
|
|
int _kvm_sun3_kvatop __P((kvm_t *, u_long, u_long *));
|
|
off_t _kvm_sun3_pa2off __P((kvm_t *, u_long));
|
|
|
|
struct kvm_ops _kvm_ops_sun3 = {
|
|
_kvm_sun3_initvtop,
|
|
_kvm_sun3_freevtop,
|
|
_kvm_sun3_kvatop,
|
|
_kvm_sun3_pa2off };
|
|
|
|
#define _kvm_pg_pa(v, s, pte) \
|
|
(((pte) & (s)->pg_frame) << (v)->pgshift)
|
|
|
|
#define _kvm_va_segnum(s, x) \
|
|
((u_int)(x) >> (s)->segshift)
|
|
#define _kvm_pte_num_mask(v) \
|
|
(0xf << (v)->pgshift)
|
|
#define _kvm_va_pte_num(v, va) \
|
|
(((va) & _kvm_pte_num_mask((v))) >> (v)->pgshift)
|
|
|
|
/*
|
|
* XXX Re-define these here, no other place for them.
|
|
*/
|
|
#define NKSEG 256 /* kernel segmap entries */
|
|
#define NPAGSEG 16 /* pages per segment */
|
|
|
|
/* Finally, our local stuff... */
|
|
struct private_vmstate {
|
|
/* Page Map Entry Group (PMEG) */
|
|
int pmeg[NKSEG][NPAGSEG];
|
|
};
|
|
|
|
/*
|
|
* Prepare for translation of kernel virtual addresses into offsets
|
|
* into crash dump files. We use the MMU specific goop written at the
|
|
* beginning of a crash dump by dumpsys()
|
|
* Note: sun3 MMU specific!
|
|
*/
|
|
int
|
|
_kvm_sun3_initvtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
cpu_kcore_hdr_t *h = kd->cpu_data;
|
|
char *p;
|
|
|
|
p = kd->cpu_data;
|
|
p += (h->page_size - sizeof(kcore_seg_t));
|
|
kd->vmst->private = p;
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
_kvm_sun3_freevtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
/* This was set by pointer arithmetic, not allocation. */
|
|
kd->vmst->private = (void*)0;
|
|
}
|
|
|
|
/*
|
|
* 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_sun3_kvatop(kd, va, pap)
|
|
kvm_t *kd;
|
|
u_long va;
|
|
u_long *pap;
|
|
{
|
|
cpu_kcore_hdr_t *h = kd->cpu_data;
|
|
struct sun3_kcore_hdr *s = &h->un._sun3;
|
|
struct vmstate *v = kd->vmst;
|
|
struct private_vmstate *pv = v->private;
|
|
int pte, offset;
|
|
u_int segnum, sme, ptenum;
|
|
u_long pa;
|
|
|
|
if (ISALIVE(kd)) {
|
|
_kvm_err(kd, 0, "vatop called in live kernel!");
|
|
return(0);
|
|
}
|
|
|
|
if (va < h->kernbase) {
|
|
_kvm_err(kd, 0, "not a kernel address");
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Get the segmap entry (sme) from the kernel segmap.
|
|
* Note: only have segmap entries from KERNBASE to end.
|
|
*/
|
|
segnum = _kvm_va_segnum(s, va - h->kernbase);
|
|
ptenum = _kvm_va_pte_num(v, va);
|
|
offset = va & v->pgofset;
|
|
|
|
/* The segmap entry selects a PMEG. */
|
|
sme = s->ksegmap[segnum];
|
|
pte = pv->pmeg[sme][ptenum];
|
|
|
|
if ((pte & (s)->pg_valid) == 0) {
|
|
_kvm_err(kd, 0, "page not valid (VA=0x%x)", va);
|
|
return (0);
|
|
}
|
|
pa = _kvm_pg_pa(v, s, pte) + offset;
|
|
|
|
*pap = pa;
|
|
return (h->page_size - offset);
|
|
}
|
|
|
|
/*
|
|
* Translate a physical address to a file-offset in the crash-dump.
|
|
*/
|
|
off_t
|
|
_kvm_sun3_pa2off(kd, pa)
|
|
kvm_t *kd;
|
|
u_long pa;
|
|
{
|
|
return(kd->dump_off + pa);
|
|
}
|