mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
226 lines
5.8 KiB
C
226 lines
5.8 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* from: FreeBSD: src/lib/libkvm/kvm_i386.c,v 1.15 2001/10/10 17:48:43
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* sparc64 machine dependent routines for kvm.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/user.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/stat.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <nlist.h>
|
|
#include <kvm.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
|
|
#include <machine/kerneldump.h>
|
|
#include <machine/tte.h>
|
|
#include <machine/tlb.h>
|
|
#include <machine/tsb.h>
|
|
|
|
#include <limits.h>
|
|
|
|
#include "kvm_private.h"
|
|
|
|
#ifndef btop
|
|
#define btop(x) (sparc64_btop(x))
|
|
#define ptob(x) (sparc64_ptob(x))
|
|
#endif
|
|
|
|
struct vmstate {
|
|
off_t vm_tsb_off;
|
|
vm_size_t vm_tsb_mask;
|
|
int vm_nregions;
|
|
struct sparc64_dump_reg *vm_regions;
|
|
};
|
|
|
|
void
|
|
_kvm_freevtop(kvm_t *kd)
|
|
{
|
|
if (kd->vmst != 0) {
|
|
free(kd->vmst->vm_regions);
|
|
free(kd->vmst);
|
|
}
|
|
}
|
|
|
|
static int
|
|
_kvm_read_phys(kvm_t *kd, off_t pos, void *buf, size_t size)
|
|
{
|
|
|
|
/* XXX This has to be a raw file read, kvm_read is virtual. */
|
|
if (lseek(kd->pmfd, pos, SEEK_SET) == -1) {
|
|
_kvm_syserr(kd, kd->program, "_kvm_read_phys: lseek");
|
|
return (0);
|
|
}
|
|
if (read(kd->pmfd, buf, size) != size) {
|
|
_kvm_syserr(kd, kd->program, "_kvm_read_phys: read");
|
|
return (0);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
_kvm_reg_cmp(const void *a, const void *b)
|
|
{
|
|
const struct sparc64_dump_reg *ra, *rb;
|
|
|
|
ra = a;
|
|
rb = b;
|
|
if (ra->dr_pa < rb->dr_pa)
|
|
return (-1);
|
|
else if (ra->dr_pa >= rb->dr_pa + rb->dr_size)
|
|
return (1);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
#define KVM_OFF_NOTFOUND 0
|
|
|
|
static off_t
|
|
_kvm_find_off(struct vmstate *vm, vm_offset_t pa, vm_size_t size)
|
|
{
|
|
struct sparc64_dump_reg *reg, key;
|
|
vm_offset_t o;
|
|
|
|
key.dr_pa = pa;
|
|
reg = bsearch(&key, vm->vm_regions, vm->vm_nregions,
|
|
sizeof(*vm->vm_regions), _kvm_reg_cmp);
|
|
if (reg == NULL)
|
|
return (KVM_OFF_NOTFOUND);
|
|
o = pa - reg->dr_pa;
|
|
if (o + size > reg->dr_size)
|
|
return (KVM_OFF_NOTFOUND);
|
|
return (reg->dr_offs + o);
|
|
}
|
|
|
|
int
|
|
_kvm_initvtop(kvm_t *kd)
|
|
{
|
|
struct sparc64_dump_hdr hdr;
|
|
struct sparc64_dump_reg *regs;
|
|
struct vmstate *vm;
|
|
size_t regsz;
|
|
vm_offset_t pa;
|
|
vm_size_t mask;
|
|
|
|
vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
|
|
if (vm == NULL) {
|
|
_kvm_err(kd, kd->program, "cannot allocate vm");
|
|
return (-1);
|
|
}
|
|
kd->vmst = vm;
|
|
|
|
if (!_kvm_read_phys(kd, 0, &hdr, sizeof(hdr)))
|
|
goto fail_vm;
|
|
pa = hdr.dh_tsb_pa;
|
|
|
|
regsz = hdr.dh_nregions * sizeof(*regs);
|
|
regs = _kvm_malloc(kd, regsz);
|
|
if (regs == NULL) {
|
|
_kvm_err(kd, kd->program, "cannot allocate regions");
|
|
goto fail_vm;
|
|
}
|
|
if (!_kvm_read_phys(kd, sizeof(hdr), regs, regsz))
|
|
goto fail_regs;
|
|
qsort(regs, hdr.dh_nregions, sizeof(*regs), _kvm_reg_cmp);
|
|
|
|
vm->vm_tsb_mask = hdr.dh_tsb_mask;
|
|
vm->vm_regions = regs;
|
|
vm->vm_nregions = hdr.dh_nregions;
|
|
vm->vm_tsb_off = _kvm_find_off(vm, hdr.dh_tsb_pa, hdr.dh_tsb_size);
|
|
if (vm->vm_tsb_off == KVM_OFF_NOTFOUND) {
|
|
_kvm_err(kd, kd->program, "tsb not found in dump");
|
|
goto fail_regs;
|
|
}
|
|
return (0);
|
|
|
|
fail_regs:
|
|
free(regs);
|
|
fail_vm:
|
|
free(vm);
|
|
return (-1);
|
|
}
|
|
|
|
int
|
|
_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa)
|
|
{
|
|
struct vmstate *vm;
|
|
struct tte tte;
|
|
off_t tte_off, pa_off;
|
|
u_long pg_off, vpn;
|
|
int rest;
|
|
|
|
pg_off = va & PAGE_MASK;
|
|
if (va >= VM_MIN_DIRECT_ADDRESS)
|
|
pa_off = TLB_DIRECT_TO_PHYS(va) & ~PAGE_MASK;
|
|
else {
|
|
vpn = btop(va);
|
|
tte_off = kd->vmst->vm_tsb_off +
|
|
((vpn & kd->vmst->vm_tsb_mask) << TTE_SHIFT);
|
|
if (!_kvm_read_phys(kd, tte_off, &tte, sizeof(tte)))
|
|
goto invalid;
|
|
if (!tte_match(&tte, va))
|
|
goto invalid;
|
|
pa_off = TTE_GET_PA(&tte);
|
|
}
|
|
rest = PAGE_SIZE - pg_off;
|
|
pa_off = _kvm_find_off(kd->vmst, pa_off, rest);
|
|
if (pa_off == KVM_OFF_NOTFOUND)
|
|
goto invalid;
|
|
*pa = pa_off + pg_off;
|
|
return (rest);
|
|
|
|
invalid:
|
|
_kvm_err(kd, 0, "invalid address (%x)", va);
|
|
return (0);
|
|
}
|