kvm_amd64.c revision 1603
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/* 431603Srgrimes * 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> 511602Srgrimes#include <unistd.h> 521602Srgrimes#include <nlist.h> 531602Srgrimes#include <kvm.h> 541602Srgrimes 551602Srgrimes#include <vm/vm.h> 561602Srgrimes#include <vm/vm_param.h> 571602Srgrimes 581602Srgrimes#include <limits.h> 591602Srgrimes#include <db.h> 601602Srgrimes 611602Srgrimes#include "kvm_private.h" 621602Srgrimes 631602Srgrimes#ifndef btop 641603Srgrimes#define btop(x) (i386_btop(x)) 651603Srgrimes#define ptob(x) (i386_ptob(x)) 661602Srgrimes#endif 671602Srgrimes 681602Srgrimesstruct vmstate { 691603Srgrimes struct pde **IdlePTD; 701603Srgrimes struct pde *PTD; 711602Srgrimes}; 721602Srgrimes 731602Srgrimes#define KREAD(kd, addr, p)\ 741602Srgrimes (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p))) 751602Srgrimes 761602Srgrimesvoid 771603Srgrimes_kvm_freevtop(kvm_t *kd) { 781603Srgrimes if (kd->vmst->PTD) { 791603Srgrimes free(kd->vmst->PTD); 801603Srgrimes } 811603Srgrimes if (kd->vmst != 0) { 821602Srgrimes free(kd->vmst); 831603Srgrimes } 841602Srgrimes} 851602Srgrimes 861602Srgrimesint 871603Srgrimes_kvm_initvtop(kvm_t *kd) { 881602Srgrimes struct vmstate *vm; 891603Srgrimes struct nlist nlist[2]; 901602Srgrimes 911602Srgrimes vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm)); 921603Srgrimes if (vm == 0) { 931603Srgrimes _kvm_err(kd, kd->program, "cannot allocate vm"); 941602Srgrimes return (-1); 951603Srgrimes } 961602Srgrimes kd->vmst = vm; 971602Srgrimes 981603Srgrimes nlist[0].n_name = "_IdlePTD"; 991603Srgrimes nlist[1].n_name = 0; 1001602Srgrimes 1011602Srgrimes if (kvm_nlist(kd, nlist) != 0) { 1021602Srgrimes _kvm_err(kd, kd->program, "bad namelist"); 1031602Srgrimes return (-1); 1041602Srgrimes } 1051603Srgrimes vm->IdlePTD = 0; 1061603Srgrimes if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) { 1071603Srgrimes _kvm_err(kd, kd->program, "cannot read IdlePTD"); 1081602Srgrimes return (-1); 1091602Srgrimes } 1101603Srgrimes if ((vm->PTD = _kvm_malloc(kd, NBPG /*sizeof(struct pde)*/)) != 0) { 1111603Srgrimes _kvm_err(kd, kd->program, "cannot allocate vm->PTD"); 1121602Srgrimes } 1131603Srgrimes if (KREAD(kd, (u_long)nlist[1].n_value, &vm->PTD)) { 1141603Srgrimes _kvm_err(kd, kd->program, "cannot read PTD"); 1151602Srgrimes return (-1); 1161602Srgrimes } 1171602Srgrimes return (0); 1181602Srgrimes} 1191602Srgrimes 1201602Srgrimesstatic int 1211603Srgrimes_kvm_vatop(kvm_t *kd, u_long va, u_long *pa) { 1221602Srgrimes 1231602Srgrimes if (ISALIVE(kd)) { 1241602Srgrimes _kvm_err(kd, 0, "vatop called in live kernel!"); 1251602Srgrimes return((off_t)0); 1261602Srgrimes } 1271602Srgrimes _kvm_err(kd, 0, "invalid address (%x)", va); 1281603Srgrimes return ((off_t)0); 1291602Srgrimes} 1301602Srgrimes 1311602Srgrimesint 1321603Srgrimes_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa) { 1331603Srgrimes return (_kvm_vatop(kd, va, pa)); 1341602Srgrimes} 1351602Srgrimes 1361602Srgrimes/* 1371602Srgrimes * Translate a user virtual address to a physical address. 1381602Srgrimes */ 1391602Srgrimesint 1401603Srgrimes_kvm_uvatop(kvm_t *kd, const struct proc *p, u_long va, u_long *pa) { 1411602Srgrimes if (ISALIVE(kd)) { 1421603Srgrimes /* Not done yet */ 1431603Srgrimes } else { 1441603Srgrimes /* Not done yet */ 1451602Srgrimes } 1461603Srgrimes return ((off_t)(0)); 1471602Srgrimes} 148