1/*-
2 * Copyright (C) 2006 Bruce M. Simpson.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27/*
28 * MIPS machine dependent routines for kvm.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: releng/10.3/lib/libkvm/kvm_mips.c 251475 2013-06-06 21:09:27Z emaste $");
33
34#include <sys/param.h>
35#include <sys/elf32.h>
36#include <sys/mman.h>
37
38#include <vm/vm.h>
39#include <vm/vm_param.h>
40#include <vm/pmap.h>
41
42#include <machine/pmap.h>
43
44#include <db.h>
45#include <limits.h>
46#include <kvm.h>
47#include <stdlib.h>
48#include <string.h>
49#include <unistd.h>
50
51#include "kvm_private.h"
52
53/* minidump must be the first item! */
54struct vmstate {
55	int minidump;		/* 1 = minidump mode */
56	void *mmapbase;
57	size_t mmapsize;
58};
59
60void
61_kvm_freevtop(kvm_t *kd)
62{
63	if (kd->vmst != 0) {
64		if (kd->vmst->minidump)
65			return (_kvm_minidump_freevtop(kd));
66		if (kd->vmst->mmapbase != NULL)
67			munmap(kd->vmst->mmapbase, kd->vmst->mmapsize);
68		free(kd->vmst);
69		kd->vmst = NULL;
70	}
71}
72
73int
74_kvm_initvtop(kvm_t *kd)
75{
76	char minihdr[8];
77
78	if (!kd->rawdump) {
79		if (pread(kd->pmfd, &minihdr, 8, 0) == 8) {
80			if (memcmp(&minihdr, "minidump", 8) == 0)
81				return (_kvm_minidump_initvtop(kd));
82		} else {
83			_kvm_err(kd, kd->program, "cannot read header");
84			return (-1);
85		}
86	}
87
88	_kvm_err(kd, 0, "_kvm_initvtop: Unsupported image type");
89	return (-1);
90}
91
92int
93_kvm_kvatop(kvm_t *kd, u_long va, off_t *pa)
94{
95
96	if (kd->vmst->minidump)
97		return _kvm_minidump_kvatop(kd, va, pa);
98
99
100	_kvm_err(kd, 0, "_kvm_kvatop: Unsupported image type");
101	return (0);
102}
103
104/*
105 * Machine-dependent initialization for ALL open kvm descriptors,
106 * not just those for a kernel crash dump.  Some architectures
107 * have to deal with these NOT being constants!  (i.e. m68k)
108 */
109#ifdef FBSD_NOT_YET
110int
111_kvm_mdopen(kvm_t *kd __unused)
112{
113
114	return (0);
115}
116#endif
117