diff --git a/lib/libkvm/kvm_x86_64.c b/lib/libkvm/kvm_x86_64.c new file mode 100644 index 000000000000..e42593a581f7 --- /dev/null +++ b/lib/libkvm/kvm_x86_64.c @@ -0,0 +1,205 @@ +/* $NetBSD: kvm_x86_64.c,v 1.1 2001/06/19 00:43:24 fvdl 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. + */ + +#include +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; +#else +__RCSID("$NetBSD: kvm_x86_64.c,v 1.1 2001/06/19 00:43:24 fvdl Exp $"); +#endif +#endif /* LIBC_SCCS and not lint */ + +/* + * x86-64 machine dependent routines for kvm. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include + +#include "kvm_private.h" + +#include + +#ifndef btop +#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */ +#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */ +#endif + +void +_kvm_freevtop(kd) + kvm_t *kd; +{ + + /* Not actually used for anything right now, but safe. */ + if (kd->vmst != 0) + free(kd->vmst); +} + +/*ARGSUSED*/ +int +_kvm_initvtop(kd) + kvm_t *kd; +{ + + 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; +{ +#if 0 /* tbd */ + cpu_kcore_hdr_t *cpu_kh; + u_long page_off; + pd_entry_t pde; + pt_entry_t pte; + u_long pde_pa, pte_pa; + + if (ISALIVE(kd)) { + _kvm_err(kd, 0, "vatop called in live kernel!"); + return (0); + } + + cpu_kh = kd->cpu_data; + page_off = va & PGOFSET; + + /* + * Find and read the page directory entry. + */ + pde_pa = cpu_kh->ptdpaddr + (pdei(va) * sizeof(pd_entry_t)); + if (pread(kd->pmfd, (void *)&pde, sizeof(pde), + _kvm_pa2off(kd, pde_pa)) != sizeof(pde)) { + _kvm_syserr(kd, 0, "could not read PDE"); + goto lose; + } + + /* + * Find and read the page table entry. + */ + if ((pde & PG_V) == 0) { + _kvm_err(kd, 0, "invalid translation (invalid PDE)"); + goto lose; + } + pte_pa = (pde & PG_FRAME) + (ptei(va) * sizeof(pt_entry_t)); + if (pread(kd->pmfd, (void *) &pte, sizeof(pte), + _kvm_pa2off(kd, pte_pa)) != sizeof(pte)) { + _kvm_syserr(kd, 0, "could not read PTE"); + goto lose; + } + + /* + * Validate the PTE and return the physical address. + */ + if ((pte & PG_V) == 0) { + _kvm_err(kd, 0, "invalid translation (invalid PTE)"); + goto lose; + } + *pa = (pte & PG_FRAME) + page_off; + return (int)(NBPG - page_off); + + lose: +#endif + *pa = (u_long)~0L; + return (0); +} + +/* + * Translate a physical address to a file-offset in the crash dump. + */ +off_t +_kvm_pa2off(kd, pa) + kvm_t *kd; + u_long pa; +{ + cpu_kcore_hdr_t *cpu_kh; + phys_ram_seg_t *ramsegs; + off_t off; + int i; + + cpu_kh = kd->cpu_data; + ramsegs = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh)); + + off = 0; + for (i = 0; i < cpu_kh->nmemsegs; i++) { + if (pa >= ramsegs[i].start && + (pa - ramsegs[i].start) < ramsegs[i].size) { + off += (pa - ramsegs[i].start); + break; + } + off += ramsegs[i].size; + } + + return (kd->dump_off + off); +} + +/* + * Machine-dependent initialization for ALL open kvm descriptors, + * not just those for a kernel crash dump. Some architectures + * have to deal with these NOT being constants! (i.e. m68k) + */ +int +_kvm_mdopen(kd) + kvm_t *kd; +{ + + kd->usrstack = USRSTACK; + kd->min_uva = VM_MIN_ADDRESS; + kd->max_uva = VM_MAXUSER_ADDRESS; + + return (0); +}