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

machine.c (3222B)

      1/*
      2 * QEMU AVR CPU
      3 *
      4 * Copyright (c) 2016-2020 Michael Rolnik
      5 *
      6 * This library is free software; you can redistribute it and/or
      7 * modify it under the terms of the GNU Lesser General Public
      8 * License as published by the Free Software Foundation; either
      9 * version 2.1 of the License, or (at your option) any later version.
     10 *
     11 * This library is distributed in the hope that it will be useful,
     12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14 * Lesser General Public License for more details.
     15 *
     16 * You should have received a copy of the GNU Lesser General Public
     17 * License along with this library; if not, see
     18 * <http://www.gnu.org/licenses/lgpl-2.1.html>
     19 */
     20
     21#include "qemu/osdep.h"
     22#include "cpu.h"
     23#include "migration/cpu.h"
     24
     25static int get_sreg(QEMUFile *f, void *opaque, size_t size,
     26                    const VMStateField *field)
     27{
     28    CPUAVRState *env = opaque;
     29    uint8_t sreg;
     30
     31    sreg = qemu_get_byte(f);
     32    cpu_set_sreg(env, sreg);
     33    return 0;
     34}
     35
     36static int put_sreg(QEMUFile *f, void *opaque, size_t size,
     37                    const VMStateField *field, JSONWriter *vmdesc)
     38{
     39    CPUAVRState *env = opaque;
     40    uint8_t sreg = cpu_get_sreg(env);
     41
     42    qemu_put_byte(f, sreg);
     43    return 0;
     44}
     45
     46static const VMStateInfo vms_sreg = {
     47    .name = "sreg",
     48    .get = get_sreg,
     49    .put = put_sreg,
     50};
     51
     52static int get_segment(QEMUFile *f, void *opaque, size_t size,
     53                       const VMStateField *field)
     54{
     55    uint32_t *ramp = opaque;
     56    uint8_t temp;
     57
     58    temp = qemu_get_byte(f);
     59    *ramp = ((uint32_t)temp) << 16;
     60    return 0;
     61}
     62
     63static int put_segment(QEMUFile *f, void *opaque, size_t size,
     64                       const VMStateField *field, JSONWriter *vmdesc)
     65{
     66    uint32_t *ramp = opaque;
     67    uint8_t temp = *ramp >> 16;
     68
     69    qemu_put_byte(f, temp);
     70    return 0;
     71}
     72
     73static const VMStateInfo vms_rampD = {
     74    .name = "rampD",
     75    .get = get_segment,
     76    .put = put_segment,
     77};
     78static const VMStateInfo vms_rampX = {
     79    .name = "rampX",
     80    .get = get_segment,
     81    .put = put_segment,
     82};
     83static const VMStateInfo vms_rampY = {
     84    .name = "rampY",
     85    .get = get_segment,
     86    .put = put_segment,
     87};
     88static const VMStateInfo vms_rampZ = {
     89    .name = "rampZ",
     90    .get = get_segment,
     91    .put = put_segment,
     92};
     93static const VMStateInfo vms_eind = {
     94    .name = "eind",
     95    .get = get_segment,
     96    .put = put_segment,
     97};
     98
     99const VMStateDescription vms_avr_cpu = {
    100    .name = "cpu",
    101    .version_id = 1,
    102    .minimum_version_id = 1,
    103    .fields = (VMStateField[]) {
    104        VMSTATE_UINT32(env.pc_w, AVRCPU),
    105        VMSTATE_UINT32(env.sp, AVRCPU),
    106        VMSTATE_UINT32(env.skip, AVRCPU),
    107
    108        VMSTATE_UINT32_ARRAY(env.r, AVRCPU, NUMBER_OF_CPU_REGISTERS),
    109
    110        VMSTATE_SINGLE(env, AVRCPU, 0, vms_sreg, CPUAVRState),
    111        VMSTATE_SINGLE(env.rampD, AVRCPU, 0, vms_rampD, uint32_t),
    112        VMSTATE_SINGLE(env.rampX, AVRCPU, 0, vms_rampX, uint32_t),
    113        VMSTATE_SINGLE(env.rampY, AVRCPU, 0, vms_rampY, uint32_t),
    114        VMSTATE_SINGLE(env.rampZ, AVRCPU, 0, vms_rampZ, uint32_t),
    115        VMSTATE_SINGLE(env.eind, AVRCPU, 0, vms_eind, uint32_t),
    116
    117        VMSTATE_END_OF_LIST()
    118    }
    119};