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Diffstat (limited to 'lib/libkvm/kvm_hp300.c')
| -rw-r--r-- | lib/libkvm/kvm_hp300.c | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/lib/libkvm/kvm_hp300.c b/lib/libkvm/kvm_hp300.c deleted file mode 100644 index c84691ee1b03..000000000000 --- a/lib/libkvm/kvm_hp300.c +++ /dev/null @@ -1,286 +0,0 @@ -/*- - * 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) -static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; -#endif /* LIBC_SCCS and not lint */ - -/* - * Hp300 machine dependent routines for kvm. Hopefully, the forthcoming - * vm code will one day obsolete this module. - */ - -#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" - -#if defined(hp300) -#include <hp300/hp300/pte.h> -#endif - -#if defined(luna68k) -#include <luna68k/luna68k/pte.h> -#endif - -#ifndef btop -#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */ -#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */ -#endif - -struct vmstate { - u_long lowram; - int mmutype; - struct ste *Sysseg; -}; - -#define KREAD(kd, addr, p)\ - (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p))) - -void -_kvm_freevtop(kd) - kvm_t *kd; -{ - if (kd->vmst != 0) - free(kd->vmst); -} - -int -_kvm_initvtop(kd) - kvm_t *kd; -{ - struct vmstate *vm; - struct nlist nlist[4]; - - vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm)); - if (vm == 0) - return (-1); - kd->vmst = vm; - - nlist[0].n_name = "_lowram"; - nlist[1].n_name = "_mmutype"; - nlist[2].n_name = "_Sysseg"; - nlist[3].n_name = 0; - - if (kvm_nlist(kd, nlist) != 0) { - _kvm_err(kd, kd->program, "bad namelist"); - return (-1); - } - vm->Sysseg = 0; - if (KREAD(kd, (u_long)nlist[0].n_value, &vm->lowram)) { - _kvm_err(kd, kd->program, "cannot read lowram"); - return (-1); - } - if (KREAD(kd, (u_long)nlist[1].n_value, &vm->mmutype)) { - _kvm_err(kd, kd->program, "cannot read mmutype"); - return (-1); - } - if (KREAD(kd, (u_long)nlist[2].n_value, &vm->Sysseg)) { - _kvm_err(kd, kd->program, "cannot read segment table"); - return (-1); - } - return (0); -} - -static int -_kvm_vatop(kd, sta, va, pa) - kvm_t *kd; - struct ste *sta; - u_long va; - u_long *pa; -{ - register struct vmstate *vm; - register u_long lowram; - register u_long addr; - int p, ste, pte; - int offset; - - if (ISALIVE(kd)) { - _kvm_err(kd, 0, "vatop called in live kernel!"); - return((off_t)0); - } - vm = kd->vmst; - offset = va & PGOFSET; - /* - * If we are initializing (kernel segment table pointer not yet set) - * then return pa == va to avoid infinite recursion. - */ - if (vm->Sysseg == 0) { - *pa = va; - return (NBPG - offset); - } - lowram = vm->lowram; - if (vm->mmutype == -2) { - struct ste *sta2; - - addr = (u_long)&sta[va >> SG4_SHIFT1]; - /* - * Can't use KREAD to read kernel segment table entries. - * Fortunately it is 1-to-1 mapped so we don't have to. - */ - if (sta == vm->Sysseg) { - if (lseek(kd->pmfd, (off_t)addr, 0) == -1 || - read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0) - goto invalid; - } else if (KREAD(kd, addr, &ste)) - goto invalid; - if ((ste & SG_V) == 0) { - _kvm_err(kd, 0, "invalid level 1 descriptor (%x)", - ste); - return((off_t)0); - } - sta2 = (struct ste *)(ste & SG4_ADDR1); - addr = (u_long)&sta2[(va & SG4_MASK2) >> SG4_SHIFT2]; - /* - * Address from level 1 STE is a physical address, - * so don't use kvm_read. - */ - if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 || - read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0) - goto invalid; - if ((ste & SG_V) == 0) { - _kvm_err(kd, 0, "invalid level 2 descriptor (%x)", - ste); - return((off_t)0); - } - sta2 = (struct ste *)(ste & SG4_ADDR2); - addr = (u_long)&sta2[(va & SG4_MASK3) >> SG4_SHIFT3]; - } else { - addr = (u_long)&sta[va >> SEGSHIFT]; - /* - * Can't use KREAD to read kernel segment table entries. - * Fortunately it is 1-to-1 mapped so we don't have to. - */ - if (sta == vm->Sysseg) { - if (lseek(kd->pmfd, (off_t)addr, 0) == -1 || - read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0) - goto invalid; - } else if (KREAD(kd, addr, &ste)) - goto invalid; - if ((ste & SG_V) == 0) { - _kvm_err(kd, 0, "invalid segment (%x)", ste); - return((off_t)0); - } - p = btop(va & SG_PMASK); - addr = (ste & SG_FRAME) + (p * sizeof(struct pte)); - } - /* - * Address from STE is a physical address so don't use kvm_read. - */ - if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 || - read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0) - goto invalid; - addr = pte & PG_FRAME; - if (pte == PG_NV) { - _kvm_err(kd, 0, "page not valid"); - return (0); - } - *pa = addr - lowram + offset; - - return (NBPG - offset); -invalid: - _kvm_err(kd, 0, "invalid address (%x)", va); - return (0); -} - -int -_kvm_kvatop(kd, va, pa) - kvm_t *kd; - u_long va; - u_long *pa; -{ - return (_kvm_vatop(kd, (u_long)kd->vmst->Sysseg, va, pa)); -} - -/* - * 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; -{ - register struct vmspace *vms = p->p_vmspace; - int kva; - - /* - * If this is a live kernel we just look it up in the kernel - * virtually allocated flat 4mb page table (i.e. let the kernel - * do the table walk). In this way, we avoid needing to know - * the MMU type. - */ - if (ISALIVE(kd)) { - struct pte *ptab; - int pte, offset; - - kva = (int)&vms->vm_pmap.pm_ptab; - if (KREAD(kd, kva, &ptab)) { - _kvm_err(kd, 0, "invalid address (%x)", va); - return (0); - } - kva = (int)&ptab[btop(va)]; - if (KREAD(kd, kva, &pte) || (pte & PG_V) == 0) { - _kvm_err(kd, 0, "invalid address (%x)", va); - return (0); - } - offset = va & PGOFSET; - *pa = (pte & PG_FRAME) | offset; - return (NBPG - offset); - } - /* - * Otherwise, we just walk the table ourself. - */ - kva = (int)&vms->vm_pmap.pm_stab; - if (KREAD(kd, kva, &kva)) { - _kvm_err(kd, 0, "invalid address (%x)", va); - return (0); - } - return (_kvm_vatop(kd, kva, va, pa)); -} |