C++ register_savevm函数代码示例

RTCState *rtc_init(int base, qemu_irq irq, int base_year)
{
    RTCState *s;

    s = qemu_mallocz(sizeof(RTCState));

    s->irq = irq;
    s->cmos_data[RTC_REG_A] = 0x26;
    s->cmos_data[RTC_REG_B] = 0x02;
    s->cmos_data[RTC_REG_C] = 0x00;
    s->cmos_data[RTC_REG_D] = 0x80;

    s->base_year = base_year;
    rtc_set_date_from_host(s);

    s->periodic_timer = qemu_new_timer(vm_clock,
                                       rtc_periodic_timer, s);
    s->second_timer = qemu_new_timer(vm_clock,
                                     rtc_update_second, s);
    s->second_timer2 = qemu_new_timer(vm_clock,
                                      rtc_update_second2, s);

    s->next_second_time = qemu_get_clock(vm_clock) + (ticks_per_sec * 99) / 100;
    qemu_mod_timer(s->second_timer2, s->next_second_time);

    register_ioport_write(base, 2, 1, cmos_ioport_write, s);
    register_ioport_read(base, 2, 1, cmos_ioport_read, s);

    register_savevm("mc146818rtc", base, 1, rtc_save, rtc_load, s);
#ifdef TARGET_I386
    if (rtc_td_hack)
        register_savevm("mc146818rtc-td", base, 1, rtc_save_td, rtc_load_td, s);
#endif
    return s;
}

void goldfish_timer_and_rtc_init(uint32_t timerbase, int timerirq)
{
    timer_state.dev.base = timerbase;
    timer_state.dev.irq = timerirq;
    timer_state.timer = qemu_new_timer(vm_clock, goldfish_timer_tick, &timer_state);
    goldfish_device_add(&timer_state.dev, goldfish_timer_readfn, goldfish_timer_writefn, &timer_state);
    register_savevm( "goldfish_timer", 0, GOLDFISH_TIMER_SAVE_VERSION,
                     goldfish_timer_save, goldfish_timer_load, &timer_state);

    goldfish_device_add(&rtc_state.dev, goldfish_rtc_readfn, goldfish_rtc_writefn, &rtc_state);
    register_savevm( "goldfish_rtc", 0, GOLDFISH_RTC_SAVE_VERSION,
                     goldfish_rtc_save, goldfish_rtc_load, &rtc_state);
}

static int arm_gic_common_init(SysBusDevice *dev)
{
    gic_state *s = FROM_SYSBUS(gic_state, dev);
    int num_irq = s->num_irq;

    if (s->num_cpu > NCPU) {
        hw_error("requested %u CPUs exceeds GIC maximum %d\n",
                 s->num_cpu, NCPU);
    }
    s->num_irq += GIC_BASE_IRQ;
    if (s->num_irq > GIC_MAXIRQ) {
        hw_error("requested %u interrupt lines exceeds GIC maximum %d\n",
                 num_irq, GIC_MAXIRQ);
    }
    /* ITLinesNumber is represented as (N / 32) - 1 (see
     * gic_dist_readb) so this is an implementation imposed
     * restriction, not an architectural one:
     */
    if (s->num_irq < 32 || (s->num_irq % 32)) {
        hw_error("%d interrupt lines unsupported: not divisible by 32\n",
                 num_irq);
    }

    register_savevm(NULL, "arm_gic", -1, 3, gic_save, gic_load, s);
    return 0;
}

VirtIODevice *virtio_blk_init(DeviceState *dev, BlockConf *conf)
{
    VirtIOBlock *s;
    int cylinders, heads, secs;
    static int virtio_blk_id;

    s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
                                          sizeof(struct virtio_blk_config),
                                          sizeof(VirtIOBlock));

    s->vdev.get_config = virtio_blk_update_config;
    s->vdev.get_features = virtio_blk_get_features;
    s->vdev.reset = virtio_blk_reset;
    s->bs = conf->dinfo->bdrv;
    s->conf = conf;
    s->rq = NULL;
    s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
    bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs);

    s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);

    qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
    register_savevm("virtio-blk", virtio_blk_id++, 2,
                    virtio_blk_save, virtio_blk_load, s);

    return &s->vdev;
}

void pipe_dev_init()
{
    PipeDevice *s;

    s = (PipeDevice *) qemu_mallocz(sizeof(*s));

    s->dev.name = "qemu_pipe";
    s->dev.id = -1;
    s->dev.base = 0;       
    s->dev.size = 0x2000;
    s->dev.irq = 0;
    s->dev.irq_count = 1;

    goldfish_device_add(&s->dev, pipe_dev_readfn, pipe_dev_writefn, s);

    register_savevm( "goldfish_pipe", 0, GOLDFISH_PIPE_SAVE_VERSION,
                      goldfish_pipe_save, goldfish_pipe_load, s);

#if DEBUG_ZERO_PIPE
    goldfish_pipe_add_type("zero", NULL, &zeroPipe_funcs);
#endif
#if DEBUG_PINGPONG_PIPE
    goldfish_pipe_add_type("pingpong", NULL, &pingPongPipe_funcs);
#endif
#if DEBUG_THROTTLE_PIPE
    goldfish_pipe_add_type("throttle", NULL, &throttlePipe_funcs);
#endif
}

void *goldfish_switch_add(char *name, uint32_t (*writefn)(void *opaque, uint32_t state), void *writeopaque, int id)
{
    int ret;
    struct switch_state *s;

    s = qemu_mallocz(sizeof(*s));
    s->dev.name = "goldfish-switch";
    s->dev.id = id;
    s->dev.size = 0x1000;
    s->dev.irq_count = 1;
    s->name = name;
    s->writefn = writefn;
    s->writeopaque = writeopaque;


    ret = goldfish_device_add(&s->dev, goldfish_switch_readfn, goldfish_switch_writefn, s);
    if(ret) {
        qemu_free(s);
        return NULL;
    }

    register_savevm( "goldfish_switch", 0, GOLDFISH_SWITCH_SAVE_VERSION,
                     goldfish_switch_save, goldfish_switch_load, s);

    return s;
}

VirtIODevice *virtio_balloon_init(DeviceState *dev)
{
    VirtIOBalloon *s;
    int ret;

    s = (VirtIOBalloon *)virtio_common_init("virtio-balloon",
                                            VIRTIO_ID_BALLOON,
                                            8, sizeof(VirtIOBalloon));

    s->vdev.get_config = virtio_balloon_get_config;
    s->vdev.set_config = virtio_balloon_set_config;
    s->vdev.get_features = virtio_balloon_get_features;

    ret = qemu_add_balloon_handler(virtio_balloon_to_target,
                                   virtio_balloon_stat, s);
    if (ret < 0) {
        virtio_cleanup(&s->vdev);
        return NULL;
    }

    s->ivq = virtio_add_queue(&s->vdev, 128, virtio_balloon_handle_output);
    s->dvq = virtio_add_queue(&s->vdev, 128, virtio_balloon_handle_output);
    s->svq = virtio_add_queue(&s->vdev, 128, virtio_balloon_receive_stats);

    reset_stats(s);

    s->qdev = dev;
    register_savevm(dev, "virtio-balloon", -1, 1,
                    virtio_balloon_save, virtio_balloon_load, s);

    return &s->vdev;
}

void virtio_audio_init(VirtIOBindFn bind, void *bind_arg, AudioState *audio)
{
    VirtIOAudio *s;
    int i;

    s = (VirtIOAudio *)bind(bind_arg, "virtio-audio", 0, VIRTIO_ID_AUDIO,
                            sizeof(struct virtio_audio_cfg),
                            sizeof(VirtIOAudio));
    if (!s)
        return;

    s->vdev.get_config = virtio_audio_get_config;
    s->vdev.get_features = virtio_audio_get_features;
    s->vdev.set_features = virtio_audio_set_features;
    s->cmd_vq = virtio_add_queue(&s->vdev, VIRT_CONTROL_QUEUE_SIZE, virtio_audio_handle_cmd);
    for (i = 0; i < NUM_STREAMS; i++) {
        s->stream[i].data_vq = virtio_add_queue(&s->vdev, VIRT_DATA_QUEUE_SIZE,
                                                virtio_audio_handle_data);
        s->stream[i].dev = s;
    }

    AUD_register_card(audio, "virtio-audio", &s->card);

    register_savevm("virtio-audio", -1, 1,
                    virtio_audio_save, virtio_audio_load, s);
}

void configure_icount(const char *option)
{
    register_savevm("timer", 0, 2, timer_save, timer_load, &timers_state);

    if (!option)
        return;

    if (strcmp(option, "auto") != 0) {
        icount_time_shift = strtol(option, NULL, 0);
        use_icount = 1;
        return;
    }

    use_icount = 2;

    /* 125MIPS seems a reasonable initial guess at the guest speed.
       It will be corrected fairly quickly anyway.  */
    icount_time_shift = 3;

    /* Have both realtime and virtual time triggers for speed adjustment.
       The realtime trigger catches emulated time passing too slowly,
       the virtual time trigger catches emulated time passing too fast.
       Realtime triggers occur even when idle, so use them less frequently
       than VM triggers.  */
    icount_rt_timer = qemu_new_timer(rt_clock, icount_adjust_rt, NULL);
    qemu_mod_timer(icount_rt_timer,
                   qemu_get_clock(rt_clock) + 1000);
    icount_vm_timer = qemu_new_timer(vm_clock, icount_adjust_vm, NULL);
    qemu_mod_timer(icount_vm_timer,
                   qemu_get_clock(vm_clock) + get_ticks_per_sec() / 10);
}

/* Generic PowerPC 4xx processor instanciation */
CPUState *ppc4xx_init (const unsigned char *cpu_model,
                       clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
                       uint32_t sysclk)
{
    CPUState *env;

    /* init CPUs */
    env = cpu_init(cpu_model);
    if (!env) {
        fprintf(stderr, "Unable to find PowerPC %s CPU definition\n",
                cpu_model);
        exit(1);
    }
    cpu_clk->cb = NULL; /* We don't care about CPU clock frequency changes */
    cpu_clk->opaque = env;
    /* Set time-base frequency to sysclk */
    tb_clk->cb = ppc_emb_timers_init(env, sysclk);
    tb_clk->opaque = env;
    ppc_dcr_init(env, NULL, NULL);
    /* Register qemu callbacks */
    qemu_register_reset(&cpu_ppc_reset, env);
    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);

    return env;
}

void *virtio_console_init(PCIBus *bus, CharDriverState *chr)
{
    VirtIOConsole *s;

    s = (VirtIOConsole *)virtio_init_pci(bus, "virtio-console",
                                         PCI_VENDOR_ID_REDHAT_QUMRANET,
                                         PCI_DEVICE_ID_VIRTIO_CONSOLE,
                                         PCI_VENDOR_ID_REDHAT_QUMRANET,
                                         VIRTIO_ID_CONSOLE,
                                         PCI_CLASS_OTHERS, 0x00,
                                         0, sizeof(VirtIOConsole));
    if (s == NULL)
        return NULL;

    s->vdev.get_features = virtio_console_get_features;

    s->ivq = virtio_add_queue(&s->vdev, 128, virtio_console_handle_input);
    s->dvq = virtio_add_queue(&s->vdev, 128, virtio_console_handle_output);

    s->chr = chr;
    qemu_chr_add_handlers(chr, vcon_can_read, vcon_read, vcon_event, s);

    register_savevm("virtio-console", -1, 1, virtio_console_save, virtio_console_load, s);

    return &s->vdev;
}

RTCState *rtc_init(int base, int irq)
{
    RTCState *s;
    time_t ti;
    struct tm *tm;
    int val;

    s = qemu_mallocz(sizeof(RTCState));
    if (!s)
        return NULL;

/* PC cmos mappings */
#define REG_IBM_CENTURY_BYTE        0x32
#define REG_IBM_PS2_CENTURY_BYTE    0x37
    time(&ti);
    tm = gmtime(&ti);		/* XXX localtime and update from guest? */
    val = to_bcd(s, (tm->tm_year / 100) + 19);
    rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
    rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);

    register_ioport_write(base, 2, 1, cmos_ioport_write, s);
    register_ioport_read(base, 2, 1, cmos_ioport_read, s);

    register_savevm("mc146818rtc", base, 1, rtc_save, rtc_load, s);
    return s;
}

RTCState *rtc_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq)
{
    RTCState *s;
    int io_memory;

    s = qemu_mallocz(sizeof(RTCState));
    if (!s)
        return NULL;

    s->irq = irq;
    s->cmos_data[RTC_REG_A] = 0x26;
    s->cmos_data[RTC_REG_B] = 0x02;
    s->cmos_data[RTC_REG_C] = 0x00;
    s->cmos_data[RTC_REG_D] = 0x80;

    rtc_set_date_from_host(s);

    s->periodic_timer = qemu_new_timer(vm_clock,
                                       rtc_periodic_timer, s);
    s->second_timer = qemu_new_timer(vm_clock,
                                     rtc_update_second, s);
    s->second_timer2 = qemu_new_timer(vm_clock,
                                      rtc_update_second2, s);

    s->next_second_time = qemu_get_clock(vm_clock) + (ticks_per_sec * 99) / 100;
    qemu_mod_timer(s->second_timer2, s->next_second_time);

    io_memory = cpu_register_io_memory(0, rtc_mm_read, rtc_mm_write, s);
    cpu_register_physical_memory(base, 2 << it_shift, io_memory);

    register_savevm("mc146818rtc", base, 1, rtc_save, rtc_load, s);
    return s;
}

static int virtio_balloon_device_init(VirtIODevice *vdev)
{
    DeviceState *qdev = DEVICE(vdev);
    VirtIOBalloon *s = VIRTIO_BALLOON(vdev);
    int ret;

    virtio_init(vdev, "virtio-balloon", VIRTIO_ID_BALLOON, 8);

    ret = qemu_add_balloon_handler(virtio_balloon_to_target,
                                   virtio_balloon_stat, s);

    if (ret < 0) {
        virtio_cleanup(VIRTIO_DEVICE(s));
        return -1;
    }

    s->ivq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output);
    s->dvq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output);
    s->svq = virtio_add_queue(vdev, 128, virtio_balloon_receive_stats);

    register_savevm(qdev, "virtio-balloon", -1, 1,
                    virtio_balloon_save, virtio_balloon_load, s);

    object_property_add(OBJECT(qdev), "guest-stats", "guest statistics",
                        balloon_stats_get_all, NULL, NULL, s, NULL);

    object_property_add(OBJECT(qdev), "guest-stats-polling-interval", "int",
                        balloon_stats_get_poll_interval,
                        balloon_stats_set_poll_interval,
                        NULL, s, NULL);
    return 0;
}

void *esp_init(target_phys_addr_t espaddr, int it_shift,
               espdma_memory_read_write dma_memory_read,
               espdma_memory_read_write dma_memory_write,
               void *dma_opaque, qemu_irq irq, qemu_irq *reset)
{
    ESPState *s;
    int esp_io_memory;

    s = qemu_mallocz(sizeof(ESPState));
    if (!s)
        return NULL;

    s->irq = irq;
    s->it_shift = it_shift;
    s->dma_memory_read = dma_memory_read;
    s->dma_memory_write = dma_memory_write;
    s->dma_opaque = dma_opaque;

    esp_io_memory = cpu_register_io_memory(0, esp_mem_read, esp_mem_write, s);
    cpu_register_physical_memory(espaddr, ESP_REGS << it_shift, esp_io_memory);

    esp_reset(s);

    register_savevm("esp", espaddr, 3, esp_save, esp_load, s);
    qemu_register_reset(esp_reset, s);

    *reset = *qemu_allocate_irqs(parent_esp_reset, s, 1);

    return s;
}