1 /*- 2 * Copyright (c) 1989, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software developed by the Computer Systems 6 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract 7 * BG 91-66 and contributed to Berkeley. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38 #if defined(LIBC_SCCS) && !defined(lint) 39 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; 40 #endif /* LIBC_SCCS and not lint */ 41 42 /* 43 * i386 machine dependent routines for kvm. Hopefully, the forthcoming 44 * vm code will one day obsolete this module. 45 */ 46 47 #include <sys/param.h> 48 #include <sys/user.h> 49 #include <sys/proc.h> 50 #include <sys/stat.h> 51 #include <stdlib.h> 52 #include <unistd.h> 53 #include <nlist.h> 54 #include <kvm.h> 55 56 #include <vm/vm.h> 57 #include <vm/vm_param.h> 58 59 #include <limits.h> 60 #include <db.h> 61 62 #include "kvm_private.h" 63 64 #ifndef btop 65 #define btop(x) (i386_btop(x)) 66 #define ptob(x) (i386_ptob(x)) 67 #endif 68 69 struct vmstate { 70 struct pde **IdlePTD; 71 struct pde *PTD; 72 }; 73 74 #define KREAD(kd, addr, p)\ 75 (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p))) 76 77 void 78 _kvm_freevtop(kvm_t *kd) { 79 if (kd->vmst->PTD) { 80 free(kd->vmst->PTD); 81 } 82 if (kd->vmst != 0) { 83 free(kd->vmst); 84 } 85 } 86 87 int 88 _kvm_initvtop(kvm_t *kd) { 89 struct vmstate *vm; 90 struct nlist nlist[2]; 91 92 vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm)); 93 if (vm == 0) { 94 _kvm_err(kd, kd->program, "cannot allocate vm"); 95 return (-1); 96 } 97 kd->vmst = vm; 98 99 nlist[0].n_name = "_IdlePTD"; 100 nlist[1].n_name = 0; 101 102 if (kvm_nlist(kd, nlist) != 0) { 103 _kvm_err(kd, kd->program, "bad namelist"); 104 return (-1); 105 } 106 vm->PTD = 0; 107 vm->IdlePTD = 0; 108 if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) { 109 _kvm_err(kd, kd->program, "cannot read IdlePTD"); 110 return (-1); 111 } 112 if ((vm->PTD = _kvm_malloc(kd, PAGE_SIZE /*sizeof(struct pde)*/)) != 0) { 113 _kvm_err(kd, kd->program, "cannot allocate vm->PTD"); 114 } 115 if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) { 116 _kvm_err(kd, kd->program, "cannot read PTD"); 117 return (-1); 118 } 119 return (0); 120 } 121 122 static int 123 _kvm_vatop(kvm_t *kd, u_long va, u_long *pa) { 124 125 if (ISALIVE(kd)) { 126 _kvm_err(kd, 0, "vatop called in live kernel!"); 127 return((off_t)0); 128 } 129 _kvm_err(kd, 0, "invalid address (%x)", va); 130 return ((off_t)0); 131 } 132 133 int 134 _kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) { 135 return (_kvm_vatop(kd, va, pa)); 136 } 137