1 /* $NetBSD: kvm_m68k.c,v 1.11 1997/04/09 21:15:50 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Gordon W. Ross and Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Run-time kvm dispatcher for m68k machines. 41 * The actual MD code is in the files: 42 * kvm_m68k_cmn.c kvm_sun3.c ... 43 */ 44 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 #include <sys/kcore.h> 48 49 #include <stdio.h> 50 #include <string.h> 51 #include <stdlib.h> 52 53 #include <unistd.h> 54 #include <limits.h> 55 #include <nlist.h> 56 #include <kvm.h> 57 #include <db.h> 58 59 #include <machine/kcore.h> 60 61 #include "kvm_private.h" 62 #include "kvm_m68k.h" 63 64 struct name_ops { 65 const char *name; 66 struct kvm_ops *ops; 67 }; 68 69 /* 70 * Match specific kcore types first, falling into a default. 71 */ 72 static struct name_ops optbl[] = { 73 { "sun3", &_kvm_ops_sun3 }, 74 { "sun3x", &_kvm_ops_sun3x }, 75 { NULL, &_kvm_ops_cmn }, 76 }; 77 78 /* 79 * Prepare for translation of kernel virtual addresses into offsets 80 * into crash dump files. This is where we do the dispatch work. 81 */ 82 int 83 _kvm_initvtop(kd) 84 kvm_t *kd; 85 { 86 cpu_kcore_hdr_t *h; 87 struct name_ops *nop; 88 struct vmstate *vm; 89 90 vm = (struct vmstate *)_kvm_malloc(kd, sizeof (*vm)); 91 if (vm == 0) 92 return (-1); 93 94 kd->vmst = vm; 95 96 /* 97 * Use the machine name in the kcore header to determine 98 * our ops vector. When we reach an ops vector with 99 * no name, we've found a default. 100 */ 101 h = kd->cpu_data; 102 h->name[sizeof(h->name) - 1] = '\0'; /* sanity */ 103 for (nop = optbl; nop->name != NULL; nop++) 104 if (strcmp(nop->name, h->name) == 0) 105 break; 106 107 vm->ops = nop->ops; 108 109 /* 110 * Compute pgshift and pgofset. 111 */ 112 for (vm->pgshift = 0; (1 << vm->pgshift) < h->page_size; vm->pgshift++) 113 /* nothing */ ; 114 if ((1 << vm->pgshift) != h->page_size) 115 goto bad; 116 vm->pgofset = h->page_size - 1; 117 118 if ((vm->ops->initvtop)(kd) < 0) 119 goto bad; 120 121 return (0); 122 123 bad: 124 kd->vmst = NULL; 125 free(vm); 126 return (-1); 127 } 128 129 void 130 _kvm_freevtop(kd) 131 kvm_t *kd; 132 { 133 (kd->vmst->ops->freevtop)(kd); 134 free(kd->vmst); 135 } 136 137 int 138 _kvm_kvatop(kd, va, pap) 139 kvm_t *kd; 140 u_long va; 141 u_long *pap; 142 { 143 return ((kd->vmst->ops->kvatop)(kd, va, pap)); 144 } 145 146 off_t 147 _kvm_pa2off(kd, pa) 148 kvm_t *kd; 149 u_long pa; 150 { 151 return ((kd->vmst->ops->pa2off)(kd, pa)); 152 } 153