kvm_i386.c revision 17141
11602Srgrimes/*- 21602Srgrimes * Copyright (c) 1989, 1992, 1993 31602Srgrimes * The Regents of the University of California. All rights reserved. 41602Srgrimes * 51602Srgrimes * This code is derived from software developed by the Computer Systems 61602Srgrimes * Engineering group at Lawrence Berkeley Laboratory under DARPA contract 71602Srgrimes * BG 91-66 and contributed to Berkeley. 81602Srgrimes * 91602Srgrimes * Redistribution and use in source and binary forms, with or without 101602Srgrimes * modification, are permitted provided that the following conditions 111602Srgrimes * are met: 121602Srgrimes * 1. Redistributions of source code must retain the above copyright 131602Srgrimes * notice, this list of conditions and the following disclaimer. 141602Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 151602Srgrimes * notice, this list of conditions and the following disclaimer in the 161602Srgrimes * documentation and/or other materials provided with the distribution. 171602Srgrimes * 3. All advertising materials mentioning features or use of this software 181602Srgrimes * must display the following acknowledgement: 191602Srgrimes * This product includes software developed by the University of 201602Srgrimes * California, Berkeley and its contributors. 211602Srgrimes * 4. Neither the name of the University nor the names of its contributors 221602Srgrimes * may be used to endorse or promote products derived from this software 231602Srgrimes * without specific prior written permission. 241602Srgrimes * 251602Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 261602Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 271602Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 281602Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 291602Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 301602Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 311602Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 321602Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 331602Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 341602Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 351602Srgrimes * SUCH DAMAGE. 361602Srgrimes */ 371602Srgrimes 381602Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 391602Srgrimesstatic char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; 401602Srgrimes#endif /* LIBC_SCCS and not lint */ 411602Srgrimes 421602Srgrimes/* 438870Srgrimes * i386 machine dependent routines for kvm. Hopefully, the forthcoming 441602Srgrimes * vm code will one day obsolete this module. 451602Srgrimes */ 461602Srgrimes 471602Srgrimes#include <sys/param.h> 481602Srgrimes#include <sys/user.h> 491602Srgrimes#include <sys/proc.h> 501602Srgrimes#include <sys/stat.h> 5117141Sjkh#include <stdlib.h> 521602Srgrimes#include <unistd.h> 531602Srgrimes#include <nlist.h> 541602Srgrimes#include <kvm.h> 551602Srgrimes 561602Srgrimes#include <vm/vm.h> 571602Srgrimes#include <vm/vm_param.h> 581602Srgrimes 591602Srgrimes#include <limits.h> 601602Srgrimes#include <db.h> 611602Srgrimes 621602Srgrimes#include "kvm_private.h" 631602Srgrimes 641602Srgrimes#ifndef btop 651603Srgrimes#define btop(x) (i386_btop(x)) 661603Srgrimes#define ptob(x) (i386_ptob(x)) 671602Srgrimes#endif 681602Srgrimes 691602Srgrimesstruct vmstate { 701603Srgrimes struct pde **IdlePTD; 711603Srgrimes struct pde *PTD; 721602Srgrimes}; 731602Srgrimes 741602Srgrimes#define KREAD(kd, addr, p)\ 751602Srgrimes (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p))) 761602Srgrimes 771602Srgrimesvoid 781603Srgrimes_kvm_freevtop(kvm_t *kd) { 791603Srgrimes if (kd->vmst->PTD) { 801603Srgrimes free(kd->vmst->PTD); 811603Srgrimes } 821603Srgrimes if (kd->vmst != 0) { 831602Srgrimes free(kd->vmst); 841603Srgrimes } 851602Srgrimes} 861602Srgrimes 871602Srgrimesint 881603Srgrimes_kvm_initvtop(kvm_t *kd) { 891602Srgrimes struct vmstate *vm; 901603Srgrimes struct nlist nlist[2]; 911602Srgrimes 921602Srgrimes vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm)); 931603Srgrimes if (vm == 0) { 941603Srgrimes _kvm_err(kd, kd->program, "cannot allocate vm"); 951602Srgrimes return (-1); 961603Srgrimes } 971602Srgrimes kd->vmst = vm; 981602Srgrimes 991603Srgrimes nlist[0].n_name = "_IdlePTD"; 1001603Srgrimes nlist[1].n_name = 0; 1011602Srgrimes 1021602Srgrimes if (kvm_nlist(kd, nlist) != 0) { 1031602Srgrimes _kvm_err(kd, kd->program, "bad namelist"); 1041602Srgrimes return (-1); 1051602Srgrimes } 1064241Sphk vm->PTD = 0; 1071603Srgrimes vm->IdlePTD = 0; 1081603Srgrimes if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) { 1091603Srgrimes _kvm_err(kd, kd->program, "cannot read IdlePTD"); 1101602Srgrimes return (-1); 1111602Srgrimes } 11215533Sphk if ((vm->PTD = _kvm_malloc(kd, PAGE_SIZE /*sizeof(struct pde)*/)) != 0) { 1131603Srgrimes _kvm_err(kd, kd->program, "cannot allocate vm->PTD"); 1141602Srgrimes } 1151603Srgrimes if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) { 1161603Srgrimes _kvm_err(kd, kd->program, "cannot read PTD"); 1171602Srgrimes return (-1); 1181602Srgrimes } 1191602Srgrimes return (0); 1201602Srgrimes} 1211602Srgrimes 1221602Srgrimesstatic int 1231603Srgrimes_kvm_vatop(kvm_t *kd, u_long va, u_long *pa) { 1241602Srgrimes 1251602Srgrimes if (ISALIVE(kd)) { 1261602Srgrimes _kvm_err(kd, 0, "vatop called in live kernel!"); 1271602Srgrimes return((off_t)0); 1281602Srgrimes } 1291602Srgrimes _kvm_err(kd, 0, "invalid address (%x)", va); 1301603Srgrimes return ((off_t)0); 1311602Srgrimes} 1321602Srgrimes 1331602Srgrimesint 1341603Srgrimes_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) { 1351603Srgrimes return (_kvm_vatop(kd, va, pa)); 1361602Srgrimes} 137