Do not run mandoc for lintmanpages if MANPAGES is empty.
[netbsd-mini2440.git] / lib / libkvm / kvm_sun3.c
blob8d26f844b57fd8f4b335f7dbdb939e066e29c1d4
1 /* $NetBSD: kvm_sun3.c,v 1.11 2003/05/16 10:24:56 wiz Exp $ */
3 /*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software developed by the Computer Systems
8 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
9 * BG 91-66 and contributed to Berkeley.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
36 #include <sys/cdefs.h>
37 #if defined(LIBC_SCCS) && !defined(lint)
38 #if 0
39 static char sccsid[] = "@(#)kvm_sparc.c 8.1 (Berkeley) 6/4/93";
40 #else
41 __RCSID("$NetBSD: kvm_sun3.c,v 1.11 2003/05/16 10:24:56 wiz Exp $");
42 #endif
43 #endif /* LIBC_SCCS and not lint */
46 * Sun3 machine dependent routines for kvm.
48 * Note: This file has to build on ALL m68k machines,
49 * so do NOT include any <machine / *.h> files here.
52 #include <sys/types.h>
53 #include <sys/kcore.h>
55 #include <unistd.h>
56 #include <limits.h>
57 #include <nlist.h>
58 #include <kvm.h>
59 #include <db.h>
61 #include <m68k/kcore.h>
63 #include "kvm_private.h"
64 #include "kvm_m68k.h"
66 int _kvm_sun3_initvtop __P((kvm_t *));
67 void _kvm_sun3_freevtop __P((kvm_t *));
68 int _kvm_sun3_kvatop __P((kvm_t *, u_long, u_long *));
69 off_t _kvm_sun3_pa2off __P((kvm_t *, u_long));
71 struct kvm_ops _kvm_ops_sun3 = {
72 _kvm_sun3_initvtop,
73 _kvm_sun3_freevtop,
74 _kvm_sun3_kvatop,
75 _kvm_sun3_pa2off };
77 #define _kvm_pg_pa(v, s, pte) \
78 (((pte) & (s)->pg_frame) << (v)->pgshift)
80 #define _kvm_va_segnum(s, x) \
81 ((u_int)(x) >> (s)->segshift)
82 #define _kvm_pte_num_mask(v) \
83 (0xf << (v)->pgshift)
84 #define _kvm_va_pte_num(v, va) \
85 (((va) & _kvm_pte_num_mask((v))) >> (v)->pgshift)
88 * XXX Re-define these here, no other place for them.
90 #define NKSEG 256 /* kernel segmap entries */
91 #define NPAGSEG 16 /* pages per segment */
93 /* Finally, our local stuff... */
94 struct private_vmstate {
95 /* Page Map Entry Group (PMEG) */
96 int pmeg[NKSEG][NPAGSEG];
100 * Prepare for translation of kernel virtual addresses into offsets
101 * into crash dump files. We use the MMU specific goop written at the
102 * beginning of a crash dump by dumpsys()
103 * Note: sun3 MMU specific!
106 _kvm_sun3_initvtop(kd)
107 kvm_t *kd;
109 cpu_kcore_hdr_t *h = kd->cpu_data;
110 char *p;
112 p = kd->cpu_data;
113 p += (h->page_size - sizeof(kcore_seg_t));
114 kd->vmst->private = p;
116 return (0);
119 void
120 _kvm_sun3_freevtop(kd)
121 kvm_t *kd;
123 /* This was set by pointer arithmetic, not allocation. */
124 kd->vmst->private = (void*)0;
128 * Translate a kernel virtual address to a physical address using the
129 * mapping information in kd->vm. Returns the result in pa, and returns
130 * the number of bytes that are contiguously available from this
131 * physical address. This routine is used only for crash dumps.
134 _kvm_sun3_kvatop(kd, va, pap)
135 kvm_t *kd;
136 u_long va;
137 u_long *pap;
139 cpu_kcore_hdr_t *h = kd->cpu_data;
140 struct sun3_kcore_hdr *s = &h->un._sun3;
141 struct vmstate *v = kd->vmst;
142 struct private_vmstate *pv = v->private;
143 int pte, offset;
144 u_int segnum, sme, ptenum;
145 u_long pa;
147 if (ISALIVE(kd)) {
148 _kvm_err(kd, 0, "vatop called in live kernel!");
149 return(0);
152 if (va < h->kernbase) {
153 _kvm_err(kd, 0, "not a kernel address");
154 return(0);
158 * Get the segmap entry (sme) from the kernel segmap.
159 * Note: only have segmap entries from KERNBASE to end.
161 segnum = _kvm_va_segnum(s, va - h->kernbase);
162 ptenum = _kvm_va_pte_num(v, va);
163 offset = va & v->pgofset;
165 /* The segmap entry selects a PMEG. */
166 sme = s->ksegmap[segnum];
167 pte = pv->pmeg[sme][ptenum];
169 if ((pte & (s)->pg_valid) == 0) {
170 _kvm_err(kd, 0, "page not valid (VA=0x%lx)", va);
171 return (0);
173 pa = _kvm_pg_pa(v, s, pte) + offset;
175 *pap = pa;
176 return (h->page_size - offset);
180 * Translate a physical address to a file-offset in the crash dump.
182 off_t
183 _kvm_sun3_pa2off(kd, pa)
184 kvm_t *kd;
185 u_long pa;
187 return(kd->dump_off + pa);