cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

nmi.c (2169B)

      1/*
      2 *  NMI monitor handler class and helpers.
      3 *
      4 *  Copyright IBM Corp., 2014
      5 *
      6 *  Author: Alexey Kardashevskiy <aik@ozlabs.ru>
      7 *
      8 *  This program is free software; you can redistribute it and/or modify
      9 *  it under the terms of the GNU General Public License as published by
     10 *  the Free Software Foundation; either version 2 of the License,
     11 *  or (at your option) any later version.
     12 *
     13 *  This program is distributed in the hope that it will be useful,
     14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16 *  GNU General Public License for more details.
     17 *
     18 *  You should have received a copy of the GNU General Public License
     19 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
     20 */
     21
     22#include "qemu/osdep.h"
     23#include "hw/nmi.h"
     24#include "qapi/error.h"
     25#include "qapi/qmp/qerror.h"
     26#include "qemu/module.h"
     27#include "monitor/monitor.h"
     28
     29struct do_nmi_s {
     30    int cpu_index;
     31    Error *err;
     32    bool handled;
     33};
     34
     35static void nmi_children(Object *o, struct do_nmi_s *ns);
     36
     37static int do_nmi(Object *o, void *opaque)
     38{
     39    struct do_nmi_s *ns = opaque;
     40    NMIState *n = (NMIState *) object_dynamic_cast(o, TYPE_NMI);
     41
     42    if (n) {
     43        NMIClass *nc = NMI_GET_CLASS(n);
     44
     45        ns->handled = true;
     46        nc->nmi_monitor_handler(n, ns->cpu_index, &ns->err);
     47        if (ns->err) {
     48            return -1;
     49        }
     50    }
     51    nmi_children(o, ns);
     52
     53    return 0;
     54}
     55
     56static void nmi_children(Object *o, struct do_nmi_s *ns)
     57{
     58    object_child_foreach(o, do_nmi, ns);
     59}
     60
     61void nmi_monitor_handle(int cpu_index, Error **errp)
     62{
     63    struct do_nmi_s ns = {
     64        .cpu_index = cpu_index,
     65        .err = NULL,
     66        .handled = false
     67    };
     68
     69    nmi_children(object_get_root(), &ns);
     70    if (ns.handled) {
     71        error_propagate(errp, ns.err);
     72    } else {
     73        error_setg(errp, QERR_UNSUPPORTED);
     74    }
     75}
     76
     77static const TypeInfo nmi_info = {
     78    .name          = TYPE_NMI,
     79    .parent        = TYPE_INTERFACE,
     80    .class_size    = sizeof(NMIClass),
     81};
     82
     83static void nmi_register_types(void)
     84{
     85    type_register_static(&nmi_info);
     86}
     87
     88type_init(nmi_register_types)