843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER START
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * The contents of this file are subject to the terms of the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Common Development and Distribution License (the "License").
843e19887f64dde75055cf8842fc4db2171eff45johnlev * You may not use this file except in compliance with the License.
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
843e19887f64dde75055cf8842fc4db2171eff45johnlev * or http://www.opensolaris.org/os/licensing.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * See the License for the specific language governing permissions
843e19887f64dde75055cf8842fc4db2171eff45johnlev * and limitations under the License.
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * When distributing Covered Code, include this CDDL HEADER in each
843e19887f64dde75055cf8842fc4db2171eff45johnlev * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * If applicable, add the following below this CDDL HEADER, with the
843e19887f64dde75055cf8842fc4db2171eff45johnlev * fields enclosed by brackets "[]" replaced with your own identifying
843e19887f64dde75055cf8842fc4db2171eff45johnlev * information: Portions Copyright [yyyy] [name of copyright owner]
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * CDDL HEADER END
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Use is subject to license terms.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi/*
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi * Copyright (c) 2012, Joyent, Inc. All rights reserved.
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Libkvm Kernel Target Intel component
843e19887f64dde75055cf8842fc4db2171eff45johnlev *
843e19887f64dde75055cf8842fc4db2171eff45johnlev * This file provides the Intel-dependent portion of the libkvm kernel target.
843e19887f64dde75055cf8842fc4db2171eff45johnlev * For more details on the implementation refer to mdb_kvm.c.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb_target_impl.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb_kreg_impl.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb_errno.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb_err.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb_kvm.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb_ks.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/mdb.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <mdb/kvm_isadep.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/cpuvar.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev#include <sys/privmregs.h>
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevint
843e19887f64dde75055cf8842fc4db2171eff45johnlevkt_getareg(mdb_tgt_t *t, mdb_tgt_tid_t tid,
843e19887f64dde75055cf8842fc4db2171eff45johnlev const char *rname, mdb_tgt_reg_t *rp)
843e19887f64dde75055cf8842fc4db2171eff45johnlev{
843e19887f64dde75055cf8842fc4db2171eff45johnlev const mdb_tgt_regdesc_t *rdp;
843e19887f64dde75055cf8842fc4db2171eff45johnlev kt_data_t *kt = t->t_data;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (tid != kt->k_tid)
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (set_errno(EMDB_NOREGS));
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev for (rdp = kt->k_rds; rdp->rd_name != NULL; rdp++) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (strcmp(rname, rdp->rd_name) == 0) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev *rp = kt->k_regs->kregs[rdp->rd_num];
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi if (rdp->rd_flags & MDB_TGT_R_32)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi *rp &= 0xffffffffULL;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi else if (rdp->rd_flags & MDB_TGT_R_16)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi *rp &= 0xffffULL;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi else if (rdp->rd_flags & MDB_TGT_R_8H)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi *rp = (*rp & 0xff00ULL) >> 8;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi else if (rdp->rd_flags & MDB_TGT_R_8L)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi *rp &= 0xffULL;
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (0);
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (set_errno(EMDB_BADREG));
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevint
843e19887f64dde75055cf8842fc4db2171eff45johnlevkt_putareg(mdb_tgt_t *t, mdb_tgt_tid_t tid, const char *rname, mdb_tgt_reg_t r)
843e19887f64dde75055cf8842fc4db2171eff45johnlev{
843e19887f64dde75055cf8842fc4db2171eff45johnlev const mdb_tgt_regdesc_t *rdp;
843e19887f64dde75055cf8842fc4db2171eff45johnlev kt_data_t *kt = t->t_data;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (tid != kt->k_tid)
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (set_errno(EMDB_NOREGS));
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev for (rdp = kt->k_rds; rdp->rd_name != NULL; rdp++) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (strcmp(rname, rdp->rd_name) == 0) {
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi if (rdp->rd_flags & MDB_TGT_R_32)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi r &= 0xffffffffULL;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi else if (rdp->rd_flags & MDB_TGT_R_16)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi r &= 0xffffULL;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi else if (rdp->rd_flags & MDB_TGT_R_8H)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi r = (r & 0xffULL) << 8;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi else if (rdp->rd_flags & MDB_TGT_R_8L)
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi r &= 0xffULL;
0a47c91c895e274dd0990009919e30e984364a8bRobert Mustacchi
843e19887f64dde75055cf8842fc4db2171eff45johnlev kt->k_regs->kregs[rdp->rd_num] = (kreg_t)r;
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (0);
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (set_errno(EMDB_BADREG));
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevint
843e19887f64dde75055cf8842fc4db2171eff45johnlevkt_kvmregs(mdb_tgt_t *t, uint_t cpuid, mdb_tgt_gregset_t *kregs)
843e19887f64dde75055cf8842fc4db2171eff45johnlev{
843e19887f64dde75055cf8842fc4db2171eff45johnlev kt_data_t *kt = t->t_data;
843e19887f64dde75055cf8842fc4db2171eff45johnlev privmregs_t mregs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev int ret;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if ((ret = kt->k_kb_ops->kb_getmregs(kt->k_cookie, cpuid, &mregs)) != 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (ret);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev kt_regs_to_kregs(&mregs.pm_gregs, kregs);
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (0);
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevstatic int
843e19887f64dde75055cf8842fc4db2171eff45johnlevkt_cpu2cpuid(uintptr_t cpup)
843e19887f64dde75055cf8842fc4db2171eff45johnlev{
843e19887f64dde75055cf8842fc4db2171eff45johnlev cpu_t cpu;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (mdb_vread(&cpu, sizeof (cpu_t), cpup) != sizeof (cpu_t))
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (-1);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (cpu.cpu_id);
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlevint
843e19887f64dde75055cf8842fc4db2171eff45johnlevkt_cpustack(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
843e19887f64dde75055cf8842fc4db2171eff45johnlev{
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_tgt_t *t = mdb.m_target;
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_tgt_gregset_t regs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev intptr_t cpuid = 0;
843e19887f64dde75055cf8842fc4db2171eff45johnlev uint_t verbose = 0;
843e19887f64dde75055cf8842fc4db2171eff45johnlev int i;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (flags & DCMD_ADDRSPEC) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev if ((cpuid = kt_cpu2cpuid(addr)) < 0) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev (void) set_errno(EMDB_NOMAP);
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_warn("failed to find cpuid for cpu at %p", addr);
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (DCMD_ERR);
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev flags &= ~DCMD_ADDRSPEC;
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev i = mdb_getopts(argc, argv,
843e19887f64dde75055cf8842fc4db2171eff45johnlev 'c', MDB_OPT_UINTPTR, &cpuid,
843e19887f64dde75055cf8842fc4db2171eff45johnlev 'v', MDB_OPT_SETBITS, 1, &verbose,
843e19887f64dde75055cf8842fc4db2171eff45johnlev NULL);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev argc -= i;
843e19887f64dde75055cf8842fc4db2171eff45johnlev argv += i;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (kt_kvmregs(t, cpuid, &regs) != 0) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_warn("failed to get regs for cpu %d\n", cpuid);
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (DCMD_ERR);
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev /*
843e19887f64dde75055cf8842fc4db2171eff45johnlev * Tell the stack walker that we have regs.
843e19887f64dde75055cf8842fc4db2171eff45johnlev */
843e19887f64dde75055cf8842fc4db2171eff45johnlev flags |= DCMD_ADDRSPEC;
843e19887f64dde75055cf8842fc4db2171eff45johnlev addr = regs.kregs[KREG_FP];
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (verbose)
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (kt_stackv(addr, flags, argc, argv));
843e19887f64dde75055cf8842fc4db2171eff45johnlev else
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (kt_stack(addr, flags, argc, argv));
843e19887f64dde75055cf8842fc4db2171eff45johnlev}
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev/*ARGSUSED*/
843e19887f64dde75055cf8842fc4db2171eff45johnlevint
843e19887f64dde75055cf8842fc4db2171eff45johnlevkt_cpuregs(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
843e19887f64dde75055cf8842fc4db2171eff45johnlev{
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_tgt_t *t = mdb.m_target;
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_tgt_gregset_t regs;
843e19887f64dde75055cf8842fc4db2171eff45johnlev intptr_t cpuid = 0;
843e19887f64dde75055cf8842fc4db2171eff45johnlev int i;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (flags & DCMD_ADDRSPEC) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (argc != 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (DCMD_USAGE);
843e19887f64dde75055cf8842fc4db2171eff45johnlev if ((cpuid = kt_cpu2cpuid(addr)) < 0) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev (void) set_errno(EMDB_NOMAP);
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_warn("failed to find cpuid for cpu at %p", addr);
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (DCMD_ERR);
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev i = mdb_getopts(argc, argv,
843e19887f64dde75055cf8842fc4db2171eff45johnlev 'c', MDB_OPT_UINTPTR, &cpuid,
843e19887f64dde75055cf8842fc4db2171eff45johnlev NULL);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev argc -= i;
843e19887f64dde75055cf8842fc4db2171eff45johnlev argv += i;
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (argc != 0)
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (DCMD_USAGE);
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev if (kt_kvmregs(t, cpuid, &regs) != 0) {
843e19887f64dde75055cf8842fc4db2171eff45johnlev mdb_warn("failed to get regs for cpu %d\n", cpuid);
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (DCMD_ERR);
843e19887f64dde75055cf8842fc4db2171eff45johnlev }
843e19887f64dde75055cf8842fc4db2171eff45johnlev
843e19887f64dde75055cf8842fc4db2171eff45johnlev return (kt_regs((uintptr_t)&regs, flags, argc, argv));
843e19887f64dde75055cf8842fc4db2171eff45johnlev}