Add an alpha machdep for kvm. The vatop functions are stubbed out for
now (mainly because I haven't ported them from the NetBSD crash dump environment). Obtained from: NetBSD
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dfr
parent
ea66ce0537
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197
lib/libkvm/kvm_alpha.c
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197
lib/libkvm/kvm_alpha.c
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/* $Id$ */
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/* $NetBSD: kvm_alpha.c,v 1.7.2.1 1997/11/02 20:34:26 mellon Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/param.h>
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#include <sys/user.h>
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#include <sys/proc.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <nlist.h>
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#include <kvm.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <limits.h>
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#include <db.h>
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#include <stdlib.h>
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#include "kvm_private.h"
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void
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_kvm_freevtop(kd)
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kvm_t *kd;
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{
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/* Not actually used for anything right now, but safe. */
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if (kd->vmst != 0)
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free(kd->vmst);
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}
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int
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_kvm_initvtop(kd)
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kvm_t *kd;
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{
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return (0);
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}
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int
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_kvm_kvatop(kd, va, pa)
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kvm_t *kd;
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u_long va;
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u_long *pa;
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{
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#if 0
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cpu_kcore_hdr_t *cpu_kh;
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int rv, page_off;
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alpha_pt_entry_t pte;
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off_t pteoff;
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if (ISALIVE(kd)) {
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_kvm_err(kd, 0, "vatop called in live kernel!");
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return(0);
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}
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cpu_kh = kd->cpu_data;
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page_off = va & (cpu_kh->page_size - 1);
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if (va >= ALPHA_K0SEG_BASE && va <= ALPHA_K0SEG_END) {
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/*
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* Direct-mapped address: just convert it.
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*/
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*pa = ALPHA_K0SEG_TO_PHYS(va);
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rv = cpu_kh->page_size - page_off;
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} else if (va >= ALPHA_K1SEG_BASE && va <= ALPHA_K1SEG_END) {
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/*
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* Real kernel virtual address: do the translation.
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*/
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/* Find and read the L1 PTE. */
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pteoff = cpu_kh->lev1map_pa +
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kvtol1pte(va) * sizeof(alpha_pt_entry_t);
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if (lseek(kd->pmfd, _kvm_pa2off(kd, pteoff), 0) == -1 ||
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read(kd->pmfd, (char *)&pte, sizeof(pte)) != sizeof(pte)) {
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_kvm_syserr(kd, 0, "could not read L1 PTE");
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goto lose;
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}
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/* Find and read the L2 PTE. */
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if ((pte & ALPHA_PTE_VALID) == 0) {
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_kvm_err(kd, 0, "invalid translation (invalid L1 PTE)");
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goto lose;
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}
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pteoff = ALPHA_PTE_TO_PFN(pte) * cpu_kh->page_size +
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vatoste(va) * sizeof(alpha_pt_entry_t);
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if (lseek(kd->pmfd, _kvm_pa2off(kd, pteoff), 0) == -1 ||
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read(kd->pmfd, (char *)&pte, sizeof(pte)) != sizeof(pte)) {
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_kvm_syserr(kd, 0, "could not read L2 PTE");
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goto lose;
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}
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/* Find and read the L3 PTE. */
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if ((pte & ALPHA_PTE_VALID) == 0) {
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_kvm_err(kd, 0, "invalid translation (invalid L2 PTE)");
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goto lose;
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}
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pteoff = ALPHA_PTE_TO_PFN(pte) * cpu_kh->page_size +
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vatopte(va) * sizeof(alpha_pt_entry_t);
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if (lseek(kd->pmfd, _kvm_pa2off(kd, pteoff), 0) == -1 ||
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read(kd->pmfd, (char *)&pte, sizeof(pte)) != sizeof(pte)) {
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_kvm_syserr(kd, 0, "could not read L3 PTE");
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goto lose;
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}
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/* Fill in the PA. */
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if ((pte & ALPHA_PTE_VALID) == 0) {
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_kvm_err(kd, 0, "invalid translation (invalid L3 PTE)");
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goto lose;
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}
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*pa = ALPHA_PTE_TO_PFN(pte) * cpu_kh->page_size + page_off;
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rv = cpu_kh->page_size - page_off;
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} else {
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/*
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* Bogus address (not in KV space): punt.
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*/
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_kvm_err(kd, 0, "invalid kernel virtual address");
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lose:
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*pa = -1;
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rv = 0;
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}
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return (rv);
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#else
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return (0);
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#endif
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}
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/*
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* Translate a physical address to a file-offset in the crash-dump.
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*/
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off_t
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_kvm_pa2off(kd, pa)
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kvm_t *kd;
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u_long pa;
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{
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#if 0
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off_t off;
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cpu_kcore_hdr_t *cpu_kh;
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cpu_kh = kd->cpu_data;
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off = 0;
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pa -= cpu_kh->core_seg.start;
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return (kd->dump_off + off + pa);
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#else
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return 0; /* XXX fixme */
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#endif
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}
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/*
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* Machine-dependent initialization for ALL open kvm descriptors,
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* not just those for a kernel crash dump. Some architectures
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* have to deal with these NOT being constants! (i.e. m68k)
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*/
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int
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_kvm_mdopen(kd)
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kvm_t *kd;
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{
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#if 0 /* XXX fixme */
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kd->usrstack = USRSTACK;
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kd->min_uva = VM_MIN_ADDRESS;
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kd->max_uva = VM_MAXUSER_ADDRESS;
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#endif
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return (0);
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}
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