9da227510d
Imported with no changes, but not all parts are expected to be functional. The libc nlist functionality is enabled for the purpose of successful linking, although the nlist functionaly has not been tested on MINIX3 nor is it needed for how we use libkvm. In terms of function calls: kvm_getproc2, kvm_getargv2, kvm_getenvv2, and kvm_getlwps are expected to work, whereas kvm_getproc, kvm_getargv, kvm_getenvv, and kvm_getfiles are not. Change-Id: I7539209736f1771fc0b7db5e839d2df72f5ac615
159 lines
4.2 KiB
C
159 lines
4.2 KiB
C
/* $NetBSD: kvm_vax.c,v 1.20 2014/02/19 20:21:22 dsl Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software developed by the Computer Systems
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* Engineering group at Lawrence Berkeley Laboratory under DARPA contract
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* BG 91-66 and contributed to Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* VAX machine dependent routines for kvm. Hopefully, the forthcoming
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* vm code will one day obsolete this module. Furthermore, I hope it
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* gets here soon, because this basically is an error stub! (sorry)
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* This code may not work anyway.
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <nlist.h>
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#include <stdlib.h>
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#include <kvm.h>
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#include <uvm/uvm_extern.h>
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#include <machine/vmparam.h>
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#include <limits.h>
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#include <db.h>
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#include "kvm_private.h"
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__RCSID("$NetBSD: kvm_vax.c,v 1.20 2014/02/19 20:21:22 dsl Exp $");
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struct vmstate {
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u_long end;
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};
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void
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_kvm_freevtop(kvm_t *kd)
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{
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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(kvm_t *kd)
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{
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struct vmstate *vm;
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struct stat st;
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struct nlist nl[2];
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vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
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if (vm == 0)
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return (-1);
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kd->vmst = vm;
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if (fstat(kd->pmfd, &st) < 0)
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return (-1);
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/* Get end of kernel address */
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nl[0].n_name = "_end";
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nl[1].n_name = 0;
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if (kvm_nlist(kd, nl) != 0) {
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_kvm_err(kd, kd->program, "pmap_stod: no such symbol");
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return (-1);
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}
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vm->end = (u_long)nl[0].n_value;
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return (0);
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}
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#define VA_OFF(va) (va & (NBPG - 1))
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/*
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* Translate a kernel virtual address to a physical address using the
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* mapping information in kd->vm. Returns the result in pa, and returns
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* the number of bytes that are contiguously available from this
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* physical address. This routine is used only for crash dumps.
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*/
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int
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_kvm_kvatop(kvm_t *kd, vaddr_t va, paddr_t *pa)
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{
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u_long end;
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if (va < (u_long) KERNBASE) {
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_kvm_err(kd, 0, "invalid address (%#"PRIxVADDR"<%lx)", va,
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(u_long)KERNBASE);
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return (0);
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}
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end = kd->vmst->end;
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if (va >= end) {
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_kvm_err(kd, 0, "invalid address (%#"PRIxVADDR"<%lx)", va,
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end);
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return (0);
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}
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*pa = (va - (u_long) KERNBASE);
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return (end - va);
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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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* XXX - crash dump doesn't work anyway.
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*/
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off_t
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_kvm_pa2off(kvm_t *kd, paddr_t pa)
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{
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return(kd->dump_off + pa);
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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(kvm_t *kd)
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{
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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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return (0);
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}
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