1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* $OpenBSD: kvm_sun3.c,v 1.6 2001/12/05 02:23:11 art Exp $ */
/* $NetBSD: kvm_sun3.c,v 1.4 1996/05/05 04:32:18 gwr 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 1.4 1996/05/05 04:32:18 gwr Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
/*
* Sun3 machine dependent routines for kvm.
*/
#include <sys/param.h>
#include <sys/user.h>
#include <sys/proc.h>
#include <sys/stat.h>
#include <sys/core.h>
#include <sys/exec_aout.h>
#include <sys/kcore.h>
#include <unistd.h>
#include <limits.h>
#include <nlist.h>
#include <kvm.h>
#include <db.h>
#include <uvm/uvm_extern.h>
#include <machine/vmparam.h>
#include <machine/pmap.h>
#include <machine/kcore.h>
#include <machine/pte.h>
#include "kvm_private.h"
#define NKSEG (NSEGMAP/8) /* kernel segmap entries */
struct 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_initvtop(kd)
kvm_t *kd;
{
register char *p;
p = kd->cpu_data;
p += (NBPG - sizeof(kcore_seg_t));
kd->vmst = (struct vmstate *)p;
return (0);
}
void
_kvm_freevtop(kd)
kvm_t *kd;
{
/* This was set by pointer arithmetic, not allocation. */
kd->vmst = (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_kvatop(kd, va, pap)
kvm_t *kd;
u_long va;
u_long *pap;
{
register cpu_kcore_hdr_t *ckh;
u_int segnum, sme, ptenum;
int pte, offset;
u_long pa;
if (ISALIVE(kd)) {
_kvm_err(kd, 0, "vatop called in live kernel!");
return((off_t)0);
}
ckh = kd->cpu_data;
if (va < KERNBASE) {
_kvm_err(kd, 0, "not a kernel address");
return((off_t)0);
}
/*
* Get the segmap entry (sme) from the kernel segmap.
* Note: only have segmap entries from KERNBASE to end.
*/
segnum = VA_SEGNUM(va - KERNBASE);
ptenum = VA_PTE_NUM(va);
offset = va & PGOFSET;
/* The segmap entry selects a PMEG. */
sme = ckh->ksegmap[segnum];
pte = kd->vmst->pmeg[sme][ptenum];
if ((pte & PG_VALID) == 0) {
_kvm_err(kd, 0, "page not valid (VA=0x%x)", va);
return (0);
}
pa = PG_PA(pte) + offset;
*pap = pa;
return (NBPG - offset);
}
/*
* 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(kd->dump_off + pa);
}
|
