kvm_hppa.c revision 1.1.2.2
1 /* $NetBSD: kvm_hppa.c,v 1.1.2.2 2002/12/19 02:26:19 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1989, 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 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. 10 * 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. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 #if defined(LIBC_SCCS) && !defined(lint) 42 #if 0 43 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; 44 #else 45 __RCSID("$NetBSD: kvm_hppa.c,v 1.1.2.2 2002/12/19 02:26:19 thorpej Exp $"); 46 #endif 47 #endif /* LIBC_SCCS and not lint */ 48 49 /* 50 * hppa machine dependent routines for kvm. 51 * XXX fredette - largely unimplemented so far. what is here 52 * is lifted and disabled. 53 */ 54 55 #include <sys/param.h> 56 #include <sys/user.h> 57 #include <sys/proc.h> 58 #include <sys/stat.h> 59 #include <sys/kcore.h> 60 #include <machine/kcore.h> 61 #include <stdlib.h> 62 #include <unistd.h> 63 #include <nlist.h> 64 #include <kvm.h> 65 66 #include <uvm/uvm_extern.h> 67 68 #include <limits.h> 69 #include <db.h> 70 71 #include "kvm_private.h" 72 73 #include <machine/pmap.h> 74 #include <machine/pte.h> 75 #include <machine/vmparam.h> 76 77 #ifndef btop 78 #define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */ 79 #define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */ 80 #endif 81 82 void 83 _kvm_freevtop(kd) 84 kvm_t *kd; 85 { 86 87 /* Not actually used for anything right now, but safe. */ 88 if (kd->vmst != 0) 89 free(kd->vmst); 90 } 91 92 /*ARGSUSED*/ 93 int 94 _kvm_initvtop(kd) 95 kvm_t *kd; 96 { 97 98 return (0); 99 } 100 101 /* 102 * Translate a kernel virtual address to a physical address. 103 */ 104 int 105 _kvm_kvatop(kd, va, pa) 106 kvm_t *kd; 107 u_long va; 108 u_long *pa; 109 { 110 #if 0 111 cpu_kcore_hdr_t *cpu_kh; 112 u_long page_off; 113 pd_entry_t pde; 114 pt_entry_t pte; 115 u_long pde_pa, pte_pa; 116 #endif 117 118 if (ISALIVE(kd)) { 119 _kvm_err(kd, 0, "vatop called in live kernel!"); 120 return (0); 121 } 122 123 _kvm_syserr(kd, 0, "could not read PTE"); 124 125 #if 0 126 cpu_kh = kd->cpu_data; 127 page_off = va & PGOFSET; 128 129 /* 130 * Find and read the page directory entry. 131 */ 132 pde_pa = cpu_kh->ptdpaddr + (pdei(va) * sizeof(pd_entry_t)); 133 if (pread(kd->pmfd, (void *)&pde, sizeof(pde), 134 _kvm_pa2off(kd, pde_pa)) != sizeof(pde)) { 135 _kvm_syserr(kd, 0, "could not read PDE"); 136 goto lose; 137 } 138 139 /* 140 * Find and read the page table entry. 141 */ 142 if ((pde & PG_V) == 0) { 143 _kvm_err(kd, 0, "invalid translation (invalid PDE)"); 144 goto lose; 145 } 146 pte_pa = (pde & PG_FRAME) + (ptei(va) * sizeof(pt_entry_t)); 147 if (pread(kd->pmfd, (void *) &pte, sizeof(pte), 148 _kvm_pa2off(kd, pte_pa)) != sizeof(pte)) { 149 _kvm_syserr(kd, 0, "could not read PTE"); 150 goto lose; 151 } 152 153 /* 154 * Validate the PTE and return the physical address. 155 */ 156 if ((pte & PG_V) == 0) { 157 _kvm_err(kd, 0, "invalid translation (invalid PTE)"); 158 goto lose; 159 } 160 *pa = (pte & PG_FRAME) + page_off; 161 return (int)(NBPG - page_off); 162 163 lose: 164 #endif 165 *pa = (u_long)~0L; 166 return (0); 167 } 168 169 /* 170 * Translate a physical address to a file-offset in the crash dump. 171 */ 172 off_t 173 _kvm_pa2off(kd, pa) 174 kvm_t *kd; 175 u_long pa; 176 { 177 #if 0 178 cpu_kcore_hdr_t *cpu_kh; 179 phys_ram_seg_t *ramsegs; 180 off_t off; 181 int i; 182 183 cpu_kh = kd->cpu_data; 184 ramsegs = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh)); 185 186 off = 0; 187 for (i = 0; i < cpu_kh->nmemsegs; i++) { 188 if (pa >= ramsegs[i].start && 189 (pa - ramsegs[i].start) < ramsegs[i].size) { 190 off += (pa - ramsegs[i].start); 191 break; 192 } 193 off += ramsegs[i].size; 194 } 195 196 return (kd->dump_off + off); 197 #endif 198 return 0; 199 } 200 201 /* 202 * Machine-dependent initialization for ALL open kvm descriptors, 203 * not just those for a kernel crash dump. Some architectures 204 * have to deal with these NOT being constants! (i.e. m68k) 205 */ 206 int 207 _kvm_mdopen(kd) 208 kvm_t *kd; 209 { 210 211 kd->usrstack = USRSTACK; 212 kd->min_uva = VM_MIN_ADDRESS; 213 kd->max_uva = VM_MAXUSER_ADDRESS; 214 215 return (0); 216 } 217
Indexes created Wed Sep 24 05:09:52 GMT 2025