168 lines
3.7 KiB
C
168 lines
3.7 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: kvm_alpha.c,v 1.7.2.1 1997/11/02 20:34:26 mellon Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/user.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/uio.h>
|
|
#include <unistd.h>
|
|
#include <nlist.h>
|
|
#include <kvm.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
#include <machine/pmap.h>
|
|
#include "kvm_private.h"
|
|
|
|
static off_t _kvm_pa2off(kvm_t *kd, u_long pa);
|
|
|
|
struct vmstate {
|
|
u_int64_t lev1map_pa; /* PA of Lev1map */
|
|
u_int64_t page_size; /* Page size */
|
|
u_int64_t nmemsegs; /* Number of RAM segm */
|
|
};
|
|
|
|
void
|
|
_kvm_freevtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
|
|
/* Not actually used for anything right now, but safe. */
|
|
if (kd->vmst != 0)
|
|
free(kd->vmst);
|
|
}
|
|
|
|
int
|
|
_kvm_initvtop(kd)
|
|
kvm_t *kd;
|
|
{
|
|
struct vmstate *vm;
|
|
struct nlist nlist[2];
|
|
u_long pa;
|
|
|
|
vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
|
|
if (vm == 0) {
|
|
_kvm_err(kd, kd->program, "cannot allocate vm");
|
|
return (-1);
|
|
}
|
|
kd->vmst = vm;
|
|
vm->page_size = PAGE_SIZE;
|
|
|
|
nlist[0].n_name = "_Lev1map";
|
|
nlist[1].n_name = 0;
|
|
|
|
if (kvm_nlist(kd, nlist) != 0) {
|
|
_kvm_err(kd, kd->program, "bad namelist");
|
|
return (-1);
|
|
}
|
|
|
|
if(!ISALIVE(kd)) {
|
|
if (kvm_read(kd, (nlist[0].n_value), &pa, sizeof(pa)) != sizeof(pa)) {
|
|
_kvm_err(kd, kd->program, "cannot read Lev1map");
|
|
return (-1);
|
|
}
|
|
} else
|
|
if (kvm_read(kd, (nlist[0].n_value), &pa, sizeof(pa)) != sizeof(pa)) {
|
|
_kvm_err(kd, kd->program, "cannot read Lev1map");
|
|
return (-1);
|
|
}
|
|
vm->lev1map_pa = pa;
|
|
return (0);
|
|
|
|
}
|
|
|
|
int
|
|
_kvm_kvatop(kd, va, pa)
|
|
kvm_t *kd;
|
|
u_long va;
|
|
u_long *pa;
|
|
{
|
|
u_int64_t lev1map_pa; /* PA of Lev1map */
|
|
u_int64_t page_size;
|
|
int rv, page_off;
|
|
pv_entry_t pte;
|
|
off_t pteoff;
|
|
struct vmstate *vm;
|
|
vm = kd->vmst ;
|
|
|
|
|
|
if (ISALIVE(kd)) {
|
|
_kvm_err(kd, 0, "vatop called in live kernel!");
|
|
return(0);
|
|
}
|
|
lev1map_pa = vm->lev1map_pa;
|
|
page_size = vm->page_size;
|
|
|
|
page_off = va & (page_size - 1);
|
|
if (va >= IA64_RR_BASE(6) && va <= IA64_RR_BASE(7) + ((1L<<61)-1)) {
|
|
/*
|
|
* Direct-mapped address: just convert it.
|
|
*/
|
|
|
|
*pa = IA64_RR_MASK(va);
|
|
rv = page_size - page_off;
|
|
} else if (va >= IA64_RR_BASE(5) && va < IA64_RR_BASE(6)) {
|
|
/*
|
|
* Real kernel virtual address: do the translation.
|
|
*/
|
|
goto lose;
|
|
} else {
|
|
/*
|
|
* Bogus address (not in KV space): punt.
|
|
*/
|
|
|
|
_kvm_err(kd, 0, "invalid kernel virtual address");
|
|
lose:
|
|
*pa = -1;
|
|
rv = 0;
|
|
}
|
|
|
|
return (rv);
|
|
}
|
|
|
|
/*
|
|
* Translate a physical address to a file-offset in the crash-dump.
|
|
*/
|
|
off_t
|
|
_kvm_pa2off(kd, pa)
|
|
kvm_t *kd;
|
|
u_long pa;
|
|
{
|
|
return IA64_PHYS_TO_RR7(pa);
|
|
}
|
|
|