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

reset.c (2258B)

      1/*
      2 *  Reset handlers.
      3 *
      4 * Copyright (c) 2003-2008 Fabrice Bellard
      5 * Copyright (c) 2016 Red Hat, Inc.
      6 *
      7 * Permission is hereby granted, free of charge, to any person obtaining a copy
      8 * of this software and associated documentation files (the "Software"), to deal
      9 * in the Software without restriction, including without limitation the rights
     10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     11 * copies of the Software, and to permit persons to whom the Software is
     12 * furnished to do so, subject to the following conditions:
     13 *
     14 * The above copyright notice and this permission notice shall be included in
     15 * all copies or substantial portions of the Software.
     16 *
     17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     23 * THE SOFTWARE.
     24 */
     25
     26#include "qemu/osdep.h"
     27#include "qemu/queue.h"
     28#include "sysemu/reset.h"
     29
     30/* reset/shutdown handler */
     31
     32typedef struct QEMUResetEntry {
     33    QTAILQ_ENTRY(QEMUResetEntry) entry;
     34    QEMUResetHandler *func;
     35    void *opaque;
     36} QEMUResetEntry;
     37
     38static QTAILQ_HEAD(, QEMUResetEntry) reset_handlers =
     39    QTAILQ_HEAD_INITIALIZER(reset_handlers);
     40
     41void qemu_register_reset(QEMUResetHandler *func, void *opaque)
     42{
     43    QEMUResetEntry *re = g_malloc0(sizeof(QEMUResetEntry));
     44
     45    re->func = func;
     46    re->opaque = opaque;
     47    QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
     48}
     49
     50void qemu_unregister_reset(QEMUResetHandler *func, void *opaque)
     51{
     52    QEMUResetEntry *re;
     53
     54    QTAILQ_FOREACH(re, &reset_handlers, entry) {
     55        if (re->func == func && re->opaque == opaque) {
     56            QTAILQ_REMOVE(&reset_handlers, re, entry);
     57            g_free(re);
     58            return;
     59        }
     60    }
     61}
     62
     63void qemu_devices_reset(void)
     64{
     65    QEMUResetEntry *re, *nre;
     66
     67    /* reset all devices */
     68    QTAILQ_FOREACH_SAFE(re, &reset_handlers, entry, nre) {
     69        re->func(re->opaque);
     70    }
     71}
     72