kvm_hppa.c revision 1.6.6.1
1 /* $NetBSD: kvm_hppa.c,v 1.6.6.1 2014/05/22 11:36:56 yamt 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 1.6.6.1 2014/05/22 11:36:56 yamt 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/proc.h> 53 #include <sys/stat.h> 54 #include <sys/kcore.h> 55 #include <sys/types.h> 56 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/kcore.h> 70 #include <machine/pmap.h> 71 #include <machine/pte.h> 72 #include <machine/vmparam.h> 73 74 #ifndef btop 75 #define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */ 76 #define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */ 77 #endif 78 79 void 80 _kvm_freevtop(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(kvm_t *kd) 91 { 92 93 return 0; 94 } 95 96 /* 97 * Translate a kernel virtual address to a physical address. 98 */ 99 int 100 _kvm_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa) 101 { 102 #if 0 103 cpu_kcore_hdr_t *cpu_kh; 104 u_long page_off; 105 pd_entry_t pde; 106 pt_entry_t pte; 107 u_long pde_pa, pte_pa; 108 #endif 109 110 if (ISALIVE(kd)) { 111 _kvm_err(kd, 0, "vatop called in live kernel!"); 112 return 0; 113 } 114 115 _kvm_syserr(kd, 0, "could not read PTE"); 116 117 #if 0 118 cpu_kh = kd->cpu_data; 119 page_off = va & PGOFSET; 120 121 /* 122 * Find and read the page directory entry. 123 */ 124 pde_pa = cpu_kh->ptdpaddr + (pdei(va) * sizeof(pd_entry_t)); 125 if (_kvm_pread(kd, kd->pmfd, (void *)&pde, sizeof(pde), 126 _kvm_pa2off(kd, pde_pa)) != sizeof(pde)) { 127 _kvm_syserr(kd, 0, "could not read PDE"); 128 goto lose; 129 } 130 131 /* 132 * Find and read the page table entry. 133 */ 134 if ((pde & PG_V) == 0) { 135 _kvm_err(kd, 0, "invalid translation (invalid PDE)"); 136 goto lose; 137 } 138 pte_pa = (pde & PG_FRAME) + (ptei(va) * sizeof(pt_entry_t)); 139 if (_kvm_pread(kd, kd->pmfd, (void *) &pte, sizeof(pte), 140 _kvm_pa2off(kd, pte_pa)) != sizeof(pte)) { 141 _kvm_syserr(kd, 0, "could not read PTE"); 142 goto lose; 143 } 144 145 /* 146 * Validate the PTE and return the physical address. 147 */ 148 if ((pte & PG_V) == 0) { 149 _kvm_err(kd, 0, "invalid translation (invalid PTE)"); 150 goto lose; 151 } 152 *pa = (pte & PG_FRAME) + page_off; 153 return (int)(NBPG - page_off); 154 155 lose: 156 #endif 157 *pa = (u_long)~0L; 158 return 0; 159 } 160 161 /* 162 * Translate a physical address to a file-offset in the crash dump. 163 */ 164 off_t 165 _kvm_pa2off(kvm_t *kd, paddr_t pa) 166 { 167 #if 0 168 cpu_kcore_hdr_t *cpu_kh; 169 phys_ram_seg_t *ramsegs; 170 off_t off; 171 int i; 172 173 cpu_kh = kd->cpu_data; 174 ramsegs = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh)); 175 176 off = 0; 177 for (i = 0; i < cpu_kh->nmemsegs; i++) { 178 if (pa >= ramsegs[i].start && 179 (pa - ramsegs[i].start) < ramsegs[i].size) { 180 off += (pa - ramsegs[i].start); 181 break; 182 } 183 off += ramsegs[i].size; 184 } 185 186 return kd->dump_off + off; 187 #endif 188 return 0; 189 } 190 191 /* 192 * Machine-dependent initialization for ALL open kvm descriptors, 193 * not just those for a kernel crash dump. Some architectures 194 * have to deal with these NOT being constants! (i.e. m68k) 195 */ 196 int 197 _kvm_mdopen(kvm_t *kd) 198 { 199 200 kd->usrstack = USRSTACK; 201 kd->min_uva = VM_MIN_ADDRESS; 202 kd->max_uva = VM_MAXUSER_ADDRESS; 203 204 return 0; 205 } 206
Indexes created Sun Sep 21 16:09:51 GMT 2025