281 lines
6.8 KiB
C
281 lines
6.8 KiB
C
/* $NetBSD: kvm_sparc.c,v 1.10 1996/11/09 23:47:34 pk 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_sparc.c,v 1.10 1996/11/09 23:47:34 pk Exp $";
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* Sparc machine dependent routines for kvm. Hopefully, the forthcoming
|
|
* vm code will one day obsolete this module.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/user.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/core.h>
|
|
#include <sys/kcore.h>
|
|
#include <unistd.h>
|
|
#include <nlist.h>
|
|
#include <kvm.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#include <machine/autoconf.h>
|
|
#include <machine/kcore.h>
|
|
|
|
#include <limits.h>
|
|
#include <db.h>
|
|
|
|
#include "kvm_private.h"
|
|
|
|
|
|
static int cputyp = -1;
|
|
static int pgshift;
|
|
static int nptesg; /* [sun4/sun4c] only */
|
|
|
|
#define VA_VPG(va) ((cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) \
|
|
? VA_SUN4C_VPG(va) \
|
|
: VA_SUN4_VPG(va))
|
|
|
|
#define VA_OFF(va) (va & (kd->nbpg - 1))
|
|
|
|
|
|
void
|
|
_kvm_freevtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
if (kd->vmst != 0) {
|
|
_kvm_err(kd, kd->program, "_kvm_freevtop: internal error");
|
|
kd->vmst = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Prepare for translation of kernel virtual addresses into offsets
|
|
* into crash dump files. We use the MMU specific goop written at the
|
|
* front of the crash dump by pmap_dumpmmu().
|
|
*/
|
|
int
|
|
_kvm_initvtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
cpu_kcore_hdr_t *cpup = kd->cpu_data;
|
|
|
|
switch (cputyp = cpup->cputype) {
|
|
case CPU_SUN4:
|
|
kd->nbpg = 8196;
|
|
pgshift = 13;
|
|
break;
|
|
case CPU_SUN4C:
|
|
case CPU_SUN4M:
|
|
kd->nbpg = 4096;
|
|
pgshift = 12;
|
|
break;
|
|
default:
|
|
_kvm_err(kd, kd->program, "Unsupported CPU type");
|
|
return (-1);
|
|
}
|
|
nptesg = NBPSG / kd->nbpg;
|
|
return (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_kvatop(kd, va, pa)
|
|
kvm_t *kd;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
if (cputyp == -1)
|
|
if (_kvm_initvtop(kd) != 0)
|
|
return (-1);
|
|
|
|
return ((cputyp == CPU_SUN4M)
|
|
? _kvm_kvatop4m(kd, va, pa)
|
|
: _kvm_kvatop44c(kd, va, pa));
|
|
}
|
|
|
|
/*
|
|
* (note: sun4 3-level MMU not yet supported)
|
|
*/
|
|
int
|
|
_kvm_kvatop44c(kd, va, pa)
|
|
kvm_t *kd;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
register int vr, vs, pte;
|
|
cpu_kcore_hdr_t *cpup = kd->cpu_data;
|
|
struct regmap *rp;
|
|
struct segmap *sp;
|
|
int *ptes;
|
|
|
|
if (va < KERNBASE)
|
|
goto err;
|
|
|
|
/*
|
|
* Layout of CPU segment:
|
|
* cpu_kcore_hdr_t;
|
|
* [alignment]
|
|
* phys_ram_seg_t[cpup->nmemseg];
|
|
* ptes[cpup->npmegs];
|
|
*/
|
|
ptes = (int *)((int)kd->cpu_data + cpup->pmegoffset);
|
|
|
|
vr = VA_VREG(va);
|
|
vs = VA_VSEG(va);
|
|
|
|
sp = &cpup->segmap_store[(vr-NUREG)*NSEGRG + vs];
|
|
if (sp->sg_npte == 0)
|
|
goto err;
|
|
if (sp->sg_pmeg == cpup->npmeg /* =seginval */)
|
|
goto err;
|
|
pte = ptes[sp->sg_pmeg * nptesg + VA_VPG(va)];
|
|
if ((pte & PG_V) != 0) {
|
|
register long p, off = VA_OFF(va);
|
|
|
|
p = (pte & PG_PFNUM) << pgshift;
|
|
*pa = p + off;
|
|
return (kd->nbpg - off);
|
|
}
|
|
err:
|
|
_kvm_err(kd, 0, "invalid address (%x)", va);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
_kvm_kvatop4m(kd, va, pa)
|
|
kvm_t *kd;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
cpu_kcore_hdr_t *cpup = kd->cpu_data;
|
|
register int vr, vs;
|
|
int pte;
|
|
off_t foff;
|
|
struct regmap *rp;
|
|
struct segmap *sp;
|
|
|
|
if (va < KERNBASE)
|
|
goto err;
|
|
|
|
/*
|
|
* Layout of CPU segment:
|
|
* cpu_kcore_hdr_t;
|
|
* [alignment]
|
|
* phys_ram_seg_t[cpup->nmemseg];
|
|
*/
|
|
|
|
vr = VA_VREG(va);
|
|
vs = VA_VSEG(va);
|
|
|
|
sp = &cpup->segmap_store[(vr-NUREG)*NSEGRG + vs];
|
|
if (sp->sg_npte == 0)
|
|
goto err;
|
|
|
|
/* XXX - assume page tables in initial kernel DATA or BSS. */
|
|
foff = _kvm_pa2off(kd, (u_long)&sp->sg_pte[VA_VPG(va)] - KERNBASE);
|
|
if (foff == (off_t)-1)
|
|
return (0);
|
|
|
|
if (lseek(kd->pmfd, foff, 0) == -1 ||
|
|
read(kd->pmfd, (void *)&pte, sizeof(pte)) < 0) {
|
|
_kvm_err(kd, kd->program, "cannot read pte for %x", va);
|
|
return (0);
|
|
}
|
|
|
|
if ((pte & SRMMU_TETYPE) == SRMMU_TEPTE) {
|
|
register long p, off = VA_OFF(va);
|
|
|
|
p = (pte & SRMMU_PPNMASK) << SRMMU_PPNPASHIFT;
|
|
*pa = p + off;
|
|
return (kd->nbpg - off);
|
|
}
|
|
err:
|
|
_kvm_err(kd, 0, "invalid address (%x)", va);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Translate a physical address to a file-offset in the crash-dump.
|
|
*/
|
|
off_t
|
|
_kvm_pa2off(kd, pa)
|
|
kvm_t *kd;
|
|
u_long pa;
|
|
{
|
|
cpu_kcore_hdr_t *cpup = kd->cpu_data;
|
|
phys_ram_seg_t *mp;
|
|
off_t off;
|
|
int nmem;
|
|
|
|
/*
|
|
* Layout of CPU segment:
|
|
* cpu_kcore_hdr_t;
|
|
* [alignment]
|
|
* phys_ram_seg_t[cpup->nmemseg];
|
|
*/
|
|
mp = (phys_ram_seg_t *)((int)kd->cpu_data + cpup->memsegoffset);
|
|
off = 0;
|
|
|
|
/* Translate (sparse) pfnum to (packed) dump offset */
|
|
for (nmem = cpup->nmemseg; --nmem >= 0; mp++) {
|
|
if (mp->start <= pa && pa < mp->start + mp->size)
|
|
break;
|
|
off += mp->size;
|
|
}
|
|
if (nmem < 0) {
|
|
_kvm_err(kd, 0, "invalid address (%x)", pa);
|
|
return (-1);
|
|
}
|
|
|
|
return (kd->dump_off + off + pa - mp->start);
|
|
}
|