/* $OpenBSD: kvm_arm32.c,v 1.2 1997/02/26 16:46:29 niklas Exp $ */ /* $NetBSD: kvm_arm32.c,v 1.2 1996/03/18 22:33:16 thorpej Exp $ */ /* * Copyright (c) 1989, 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software developed by the Computer Systems * Engineering group at Lawrence Berkeley Laboratory under DARPA contract * BG 91-66 and contributed to Berkeley. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) #if 0 static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; #else static char *rcsid = "$OpenBSD: kvm_arm32.c,v 1.2 1997/02/26 16:46:29 niklas Exp $"; #endif #endif /* LIBC_SCCS and not lint */ /* * arm32 machine dependent routines for kvm. */ #include <sys/param.h> #include <sys/user.h> #include <sys/proc.h> #include <sys/stat.h> #include <unistd.h> #include <nlist.h> #include <kvm.h> #include <vm/vm.h> #include <vm/vm_param.h> #include <limits.h> #include <db.h> #include "kvm_private.h" #include <machine/pte.h> #ifndef btop #define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */ #define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */ #endif struct vmstate { pd_entry_t **IdlePTD; pd_entry_t *PTD; }; #define KREAD(kd, addr, p)\ (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p))) void _kvm_freevtop(kd) kvm_t *kd; { _kvm_err(kd, 0, "unsupported"); return; if (kd->vmst->PTD != 0) free(kd->vmst->PTD); if (kd->vmst != 0) free(kd->vmst); } int _kvm_initvtop(kd) kvm_t *kd; { struct vmstate *vm; struct nlist nlist[2]; _kvm_err(kd, 0, "unsupported"); return (0); vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm)); if (vm == 0) return (-1); kd->vmst = vm; nlist[0].n_name = "_IdlePTD"; nlist[1].n_name = 0; if (kvm_nlist(kd, nlist) != 0) { _kvm_err(kd, kd->program, "bad namelist"); return (-1); } vm->IdlePTD = 0; vm->PTD = 0; if (KREAD(kd, (u_long)nlist[0].n_value, &vm->IdlePTD)) { _kvm_err(kd, kd->program, "cannot read IdlePTD"); return (-1); } vm->PTD = (pd_entry_t *)_kvm_malloc(kd, NBPG); if ((kvm_read(kd, (u_long)vm->IdlePTD, &vm->PTD, NBPG)) != NBPG) { _kvm_err(kd, kd->program, "cannot read PTD"); return (-1); } return (0); } /* * Translate a kernel virtual address to a physical address. */ int _kvm_kvatop(kd, va, pa) kvm_t *kd; u_long va; u_long *pa; { struct vmstate *vm; u_long offset; _kvm_err(kd, 0, "unsupported"); return (0); if (ISALIVE(kd)) { _kvm_err(kd, 0, "vatop called in live kernel!"); return(0); } vm = kd->vmst; offset = va & PGOFSET; invalid: _kvm_err(kd, 0, "invalid address (%lx)", va); return (0); } /* * Translate a user virtual address to a physical address. */ int _kvm_uvatop(kd, p, va, pa) kvm_t *kd; const struct proc *p; u_long va; u_long *pa; { struct vmspace vms; pd_entry_t pde, *pdeloc; pt_entry_t pte, *pteloc; u_long kva, offset; _kvm_err(kd, 0, "unsupported"); return (0); if (va >= KERNBASE) goto invalid; /* XXX - should be passed a `kinfo_proc *' here */ if (kvm_read(kd, (u_long)p->p_vmspace, (char *)&vms, sizeof(vms)) != sizeof(vms)) goto invalid; pdeloc = vms.vm_pmap.pm_pdir + (va >> PDSHIFT); if (kvm_read(kd, (u_long)pdeloc, (char *)&pde, sizeof(pde)) != sizeof(pde)) goto invalid; if (pde == 0) goto invalid; pteloc = (pt_entry_t *)(pde & PG_FRAME) + btop(va & PT_MASK); if (lseek(kd->pmfd, (off_t)(u_long)pteloc, 0) != (off_t)(u_long)pteloc) goto invalid; if (read(kd->pmfd, (char *)&pte, sizeof(pte)) != sizeof(pte)) goto invalid; if (pte == 0) goto invalid; offset = va & PGOFSET; *pa = (pte & PG_FRAME) + offset; return (NBPG - offset); invalid: _kvm_err(kd, 0, "invalid address (%lx)", va); return (0); }