1/*-
2 * Copyright (c) 1989, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software developed by the Computer Systems
6 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
7 * BG 91-66 and contributed to Berkeley.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38#if defined(LIBC_SCCS) && !defined(lint)
39static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
40#endif /* LIBC_SCCS and not lint */
41
42/*
43 * i386 machine dependent routines for kvm. Hopefully, the forthcoming
44 * vm code will one day obsolete this module.
45 */
46
47#include <sys/param.h>
48#include <sys/user.h>
49#include <sys/proc.h>
50#include <sys/stat.h>
51#include <unistd.h>
52#include <nlist.h>
53#include <kvm.h>
54
55#include <vm/vm.h>
56#include <vm/vm_param.h>
57
58#include <limits.h>
59#include <db.h>
60
61#include "kvm_private.h"
62
63#ifndef btop
64#define btop(x) (i386_btop(x))
65#define ptob(x) (i386_ptob(x))
66#endif
67
68struct vmstate {
69 struct pde **IdlePTD;
70 struct pde *PTD;
71};
72
73#define KREAD(kd, addr, p)\
74 (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
75
76void
77_kvm_freevtop(kvm_t *kd) {
78 if (kd->vmst->PTD) {
79 free(kd->vmst->PTD);
80 }
81 if (kd->vmst != 0) {
82 free(kd->vmst);
83 }
84}
85
86int
87_kvm_initvtop(kvm_t *kd) {
88 struct vmstate *vm;
89 struct nlist nlist[2];
90
91 vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
92 if (vm == 0) {
93 _kvm_err(kd, kd->program, "cannot allocate vm");
94 return (-1);
95 }
96 kd->vmst = vm;
97
98 nlist[0].n_name = "_IdlePTD";
99 nlist[1].n_name = 0;
100
101 if (kvm_nlist(kd, nlist) != 0) {
102 _kvm_err(kd, kd->program, "bad namelist");
103 return (-1);
104 }
105 vm->PTD = 0;
106 vm->IdlePTD = 0;
107 if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) {
108 _kvm_err(kd, kd->program, "cannot read IdlePTD");
109 return (-1);
110 }
111 if ((vm->PTD = _kvm_malloc(kd, PAGE_SIZE /*sizeof(struct pde)*/)) != 0) {
112 _kvm_err(kd, kd->program, "cannot allocate vm->PTD");
113 }
114 if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) {
115 _kvm_err(kd, kd->program, "cannot read PTD");
116 return (-1);
117 }
118 return (0);
119}
120
121static int
122_kvm_vatop(kvm_t *kd, u_long va, u_long *pa) {
123
124 if (ISALIVE(kd)) {
125 _kvm_err(kd, 0, "vatop called in live kernel!");
126 return((off_t)0);
127 }
128 _kvm_err(kd, 0, "invalid address (%x)", va);
129 return ((off_t)0);
130}
131
132int
133_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) {
134 return (_kvm_vatop(kd, va, pa));
135}