LXR qemu/target/avr/machine.c

   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};
 120