kvm_hppa.c revision 1.2.22.1
1 /* kvm_hppa.c,v 1.2 2003/08/07 16:44:37 agc 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("kvm_hppa.c,v 1.2 2003/08/07 16:44:37 agc 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(kd) 80 kvm_t *kd; 81 { 82 83 /* Not actually used for anything right now, but safe. */ 84 if (kd->vmst != 0) 85 free(kd->vmst); 86 } 87 88 /*ARGSUSED*/ 89 int 90 _kvm_initvtop(kd) 91 kvm_t *kd; 92 { 93 94 return (0); 95 } 96 97 /* 98 * Translate a kernel virtual address to a physical address. 99 */ 100 int 101 _kvm_kvatop(kd, va, pa) 102 kvm_t *kd; 103 u_long va; 104 u_long *pa; 105 { 106 #if 0 107 cpu_kcore_hdr_t *cpu_kh; 108 u_long page_off; 109 pd_entry_t pde; 110 pt_entry_t pte; 111 u_long pde_pa, pte_pa; 112 #endif 113 114 if (ISALIVE(kd)) { 115 _kvm_err(kd, 0, "vatop called in live kernel!"); 116 return (0); 117 } 118 119 _kvm_syserr(kd, 0, "could not read PTE"); 120 121 #if 0 122 cpu_kh = kd->cpu_data; 123 page_off = va & PGOFSET; 124 125 /* 126 * Find and read the page directory entry. 127 */ 128 pde_pa = cpu_kh->ptdpaddr + (pdei(va) * sizeof(pd_entry_t)); 129 if (_kvm_pread(kd, kd->pmfd, (void *)&pde, sizeof(pde), 130 _kvm_pa2off(kd, pde_pa)) != sizeof(pde)) { 131 _kvm_syserr(kd, 0, "could not read PDE"); 132 goto lose; 133 } 134 135 /* 136 * Find and read the page table entry. 137 */ 138 if ((pde & PG_V) == 0) { 139 _kvm_err(kd, 0, "invalid translation (invalid PDE)"); 140 goto lose; 141 } 142 pte_pa = (pde & PG_FRAME) + (ptei(va) * sizeof(pt_entry_t)); 143 if (_kvm_pread(kd, kd->pmfd, (void *) &pte, sizeof(pte), 144 _kvm_pa2off(kd, pte_pa)) != sizeof(pte)) { 145 _kvm_syserr(kd, 0, "could not read PTE"); 146 goto lose; 147 } 148 149 /* 150 * Validate the PTE and return the physical address. 151 */ 152 if ((pte & PG_V) == 0) { 153 _kvm_err(kd, 0, "invalid translation (invalid PTE)"); 154 goto lose; 155 } 156 *pa = (pte & PG_FRAME) + page_off; 157 return (int)(NBPG - page_off); 158 159 lose: 160 #endif 161 *pa = (u_long)~0L; 162 return (0); 163 } 164 165 /* 166 * Translate a physical address to a file-offset in the crash dump. 167 */ 168 off_t 169 _kvm_pa2off(kd, pa) 170 kvm_t *kd; 171 u_long pa; 172 { 173 #if 0 174 cpu_kcore_hdr_t *cpu_kh; 175 phys_ram_seg_t *ramsegs; 176 off_t off; 177 int i; 178 179 cpu_kh = kd->cpu_data; 180 ramsegs = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh)); 181 182 off = 0; 183 for (i = 0; i < cpu_kh->nmemsegs; i++) { 184 if (pa >= ramsegs[i].start && 185 (pa - ramsegs[i].start) < ramsegs[i].size) { 186 off += (pa - ramsegs[i].start); 187 break; 188 } 189 off += ramsegs[i].size; 190 } 191 192 return (kd->dump_off + off); 193 #endif 194 return 0; 195 } 196 197 /* 198 * Machine-dependent initialization for ALL open kvm descriptors, 199 * not just those for a kernel crash dump. Some architectures 200 * have to deal with these NOT being constants! (i.e. m68k) 201 */ 202 int 203 _kvm_mdopen(kd) 204 kvm_t *kd; 205 { 206 207 kd->usrstack = USRSTACK; 208 kd->min_uva = VM_MIN_ADDRESS; 209 kd->max_uva = VM_MAXUSER_ADDRESS; 210 211 return (0); 212 } 213
Indexes created Sun Sep 21 14:09:52 GMT 2025