kvm_hppa.c revision 1.5
1 /* $NetBSD: kvm_hppa.c,v 1.5 2010/06/24 20:46:11 skrll 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. 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. 22 * 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. 34 */ 35 36 #include <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; 40 #else 41 __RCSID("$NetBSD: kvm_hppa.c,v 1.5 2010/06/24 20:46:11 skrll Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 /* 46 * hppa machine dependent routines for kvm. 47 * XXX fredette - largely unimplemented so far. what is here 48 * is lifted and disabled. 49 */ 50 51 #include <sys/param.h> 52 #include <sys/user.h> 53 #include <sys/proc.h> 54 #include <sys/stat.h> 55 #include <sys/kcore.h> 56 #include <machine/kcore.h> 57 #include <stdlib.h> 58 #include <unistd.h> 59 #include <nlist.h> 60 #include <kvm.h> 61 62 #include <uvm/uvm_extern.h> 63 64 #include <limits.h> 65 #include <db.h> 66 67 #include "kvm_private.h" 68 69 #include <machine/pmap.h> 70 #include <machine/pte.h> 71 #include <machine/vmparam.h> 72 73 #ifndef btop 74 #define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */ 75 #define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */ 76 #endif 77 78 void 79 _kvm_freevtop(kvm_t *kd) 80 { 81 82 /* Not actually used for anything right now, but safe. */ 83 if (kd->vmst != 0) 84 free(kd->vmst); 85 } 86 87 /*ARGSUSED*/ 88 int 89 _kvm_initvtop(kvm_t *kd) 90 { 91 92 return 0; 93 } 94 95 /* 96 * Translate a kernel virtual address to a physical address. 97 */ 98 int 99 _kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) 100 { 101 #if 0 102 cpu_kcore_hdr_t *cpu_kh; 103 u_long page_off; 104 pd_entry_t pde; 105 pt_entry_t pte; 106 u_long pde_pa, pte_pa; 107 #endif 108 109 if (ISALIVE(kd)) { 110 _kvm_err(kd, 0, "vatop called in live kernel!"); 111 return 0; 112 } 113 114 _kvm_syserr(kd, 0, "could not read PTE"); 115 116 #if 0 117 cpu_kh = kd->cpu_data; 118 page_off = va & PGOFSET; 119 120 /* 121 * Find and read the page directory entry. 122 */ 123 pde_pa = cpu_kh->ptdpaddr + (pdei(va) * sizeof(pd_entry_t)); 124 if (_kvm_pread(kd, kd->pmfd, (void *)&pde, sizeof(pde), 125 _kvm_pa2off(kd, pde_pa)) != sizeof(pde)) { 126 _kvm_syserr(kd, 0, "could not read PDE"); 127 goto lose; 128 } 129 130 /* 131 * Find and read the page table entry. 132 */ 133 if ((pde & PG_V) == 0) { 134 _kvm_err(kd, 0, "invalid translation (invalid PDE)"); 135 goto lose; 136 } 137 pte_pa = (pde & PG_FRAME) + (ptei(va) * sizeof(pt_entry_t)); 138 if (_kvm_pread(kd, kd->pmfd, (void *) &pte, sizeof(pte), 139 _kvm_pa2off(kd, pte_pa)) != sizeof(pte)) { 140 _kvm_syserr(kd, 0, "could not read PTE"); 141 goto lose; 142 } 143 144 /* 145 * Validate the PTE and return the physical address. 146 */ 147 if ((pte & PG_V) == 0) { 148 _kvm_err(kd, 0, "invalid translation (invalid PTE)"); 149 goto lose; 150 } 151 *pa = (pte & PG_FRAME) + page_off; 152 return (int)(NBPG - page_off); 153 154 lose: 155 #endif 156 *pa = (u_long)~0L; 157 return 0; 158 } 159 160 /* 161 * Translate a physical address to a file-offset in the crash dump. 162 */ 163 off_t 164 _kvm_pa2off(kvm_t *kd, u_long pa) 165 { 166 #if 0 167 cpu_kcore_hdr_t *cpu_kh; 168 phys_ram_seg_t *ramsegs; 169 off_t off; 170 int i; 171 172 cpu_kh = kd->cpu_data; 173 ramsegs = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh)); 174 175 off = 0; 176 for (i = 0; i < cpu_kh->nmemsegs; i++) { 177 if (pa >= ramsegs[i].start && 178 (pa - ramsegs[i].start) < ramsegs[i].size) { 179 off += (pa - ramsegs[i].start); 180 break; 181 } 182 off += ramsegs[i].size; 183 } 184 185 return kd->dump_off + off; 186 #endif 187 return 0; 188 } 189 190 /* 191 * Machine-dependent initialization for ALL open kvm descriptors, 192 * not just those for a kernel crash dump. Some architectures 193 * have to deal with these NOT being constants! (i.e. m68k) 194 */ 195 int 196 _kvm_mdopen(kvm_t *kd) 197 { 198 199 kd->usrstack = USRSTACK; 200 kd->min_uva = VM_MIN_ADDRESS; 201 kd->max_uva = VM_MAXUSER_ADDRESS; 202 203 return 0; 204 } 205
Indexes created Tue Sep 23 02:09:52 GMT 2025