C++ snapshot_module_create函数代码示例

static int tape_snapshot_write_tapimage_module(snapshot_t *s)
{
    snapshot_module_t *m;
    FILE *ftap;
    long pos, tap_size;
    BYTE buffer[256];
    int i;

    m = snapshot_module_create(s, "TAPIMAGE", TAPIMAGE_SNAP_MAJOR,
                               TAPIMAGE_SNAP_MINOR);
    if (m == NULL)
       return -1;

    /* get the file descriptor */
    ftap = ((tap_t*)tape_image_dev1->data)->fd;
    if (!ftap) {
        log_error(tape_snapshot_log, "Cannot open tapfile for reading");
        return -1;
    }

    /* remeber current position */
    pos = ftell(ftap);

    /* move to end and get size of file */
    if (fseek(ftap, 0, SEEK_END) != 0) {
        log_error(tape_snapshot_log, "Cannot move to end of tapfile");
        return -1;
    }

    tap_size = ftell(ftap);
    if (SMW_DW(m, tap_size)) {
        fseek(ftap, pos, SEEK_SET);
        log_error(tape_snapshot_log, "Cannot write size of tap image");
    }

    /* move to beginning */
    if (fseek(ftap, 0, SEEK_SET) != 0) {
        log_error(tape_snapshot_log, "Cannot move to beginning of tapfile");
        return -1;
    }

    /* read every BYTE and write to snapshot module */
    while (tap_size > 0) {
        i = fread(buffer, 1, 256, ftap);
        if (SMW_BA(m, buffer, i) < 0) {
            log_error(tape_snapshot_log, "Cannot write tap image");
            fseek(ftap, pos, SEEK_SET);
            return -1;
        }
        tap_size -= i;
    }

    /* restore position */
    fseek(ftap, pos, SEEK_SET);

    if (snapshot_module_close(m) < 0)
        return -1;

    return 0;
}

static int sid_snapshot_write_module_simple(snapshot_t *s)
{
    int sound, sid_engine;
    snapshot_module_t *m;

    m = snapshot_module_create(s, snap_module_name_simple, SNAP_MAJOR_SIMPLE,
                               SNAP_MINOR_SIMPLE);
    if (m == NULL) {
        return -1;
    }

    resources_get_int("Sound", &sound);
    if (SMW_B(m, (BYTE)sound) < 0) {
        snapshot_module_close(m);
        return -1;
    }

    if (sound) {
        resources_get_int("SidEngine", &sid_engine);
        if (SMW_B(m, (BYTE)sid_engine) < 0) {
            snapshot_module_close(m);
            return -1;
        }

        /* FIXME: Only data for first SID stored. */
        if (SMW_BA(m, sid_get_siddata(0), 32) < 0) {
            snapshot_module_close(m);
            return -1;
        }
    }

    snapshot_module_close(m);
    return 0;
}

static int mem_write_rom_snapshot_module(snapshot_t *p, int save_roms)
{
    snapshot_module_t *m;

    if (!save_roms) {
        return 0;
    }

    m = snapshot_module_create(p, SNAP_ROM_MODULE_NAME, VIC20MEM_DUMP_VER_MAJOR, VIC20MEM_DUMP_VER_MINOR);
    if (m == NULL) {
        return -1;
    }

    /* old cart system config bits.  all zero = no roms */
    SMW_B(m, 0x00);

    /* save kernal */
    SMW_BA(m, vic20memrom_kernal_rom, 0x2000);
    /* save basic */
    SMW_BA(m, vic20memrom_basic_rom, 0x2000);

    SMW_BA(m, vic20memrom_chargen_rom, 0x1000);

    snapshot_module_close(m);

    return 0;
}

int digimax_snapshot_write_module(snapshot_t *s)
{
    snapshot_module_t *m;

    m = snapshot_module_create(s, SNAP_MODULE_NAME,
                               CART_DUMP_VER_MAJOR, CART_DUMP_VER_MINOR);
    if (m == NULL) {
        return -1;
    }

    if (0
        || (SMW_DW(m, (DWORD)digimax_address) < 0)
/* FIXME: implement userport part in userport_digimax.c */
#if 0
        || (SMW_B(m, digimax_userport_address) < 0)
        || (SMW_B(m, digimax_userport_direction_A) < 0)
        || (SMW_B(m, digimax_userport_direction_B) < 0)
#endif
        || (SMW_BA(m, digimax_sound_data, 4) < 0)
        || (SMW_B(m, snd.voice0) < 0)
        || (SMW_B(m, snd.voice1) < 0)
        || (SMW_B(m, snd.voice2) < 0)
        || (SMW_B(m, snd.voice3) < 0)) {
        snapshot_module_close(m);
        return -1;
    }

    snapshot_module_close(m);
    return 0;
}

int vic_fp_snapshot_write_module(snapshot_t *s)
{
    snapshot_module_t *m;

    m = snapshot_module_create(s, SNAP_MODULE_NAME,
                               VIC20CART_DUMP_VER_MAJOR,
                               VIC20CART_DUMP_VER_MINOR);
    if (m == NULL) {
        return -1;
    }

    if (0
        || (SMW_B(m, cart_bank_reg) < 0)
        || (SMW_B(m, cart_cfg_reg) < 0)
        || (SMW_BA(m, cart_ram, CART_RAM_SIZE) < 0)
        || (SMW_BA(m, cart_rom, CART_ROM_SIZE) < 0)) {
        snapshot_module_close(m);
        return -1;
    }

    snapshot_module_close(m);

    if ((flash040core_snapshot_write_module(s, &flash_state, FLASH_SNAP_MODULE_NAME) < 0)) {
        return -1;
    }

    return 0;
}

int riotcore_snapshot_write_module(riot_context_t *riot_context, snapshot_t *p)
{
    snapshot_module_t *m;

    m = snapshot_module_create(p, riot_context->myname,
                               RIOT_DUMP_VER_MAJOR, RIOT_DUMP_VER_MINOR);
    if (m == NULL)
        return -1;

    update_timer(riot_context);

    SMW_B(m, riot_context->riot_io[0]);
    SMW_B(m, riot_context->riot_io[1]);
    SMW_B(m, riot_context->riot_io[2]);
    SMW_B(m, riot_context->riot_io[3]);

    SMW_B(m, riot_context->r_edgectrl);
    SMW_B(m, (BYTE)(riot_context->r_irqfl | (riot_context->r_irqline ? 1 : 0)));

    SMW_B(m, (BYTE)(riot_context->r_N - (*(riot_context->clk_ptr)
          - riot_context->r_write_clk)
          / riot_context->r_divider));
    SMW_W(m, (WORD)(riot_context->r_divider));
    SMW_W(m, (BYTE)((*(riot_context->clk_ptr) - riot_context->r_write_clk)
          % riot_context->r_divider));
    SMW_B(m, (BYTE)(riot_context->r_irqen ? 1 : 0));

    snapshot_module_close(m);

    return 0;
}

/*! \brief Write the snapshot module for the ACIA

 \param p
   Pointer to the snapshot data

 \return
   0 on success, -1 on error

 \remark
   Is it sensible to put the ACIA into a snapshot? It is unlikely
   the "other side" of the connection will be able to handle this
   case if a transfer was under way, anyway.

 \todo FIXME!!!  Error check.

 \todo FIXME!!!  If no connection, emulate carrier lost or so.
*/
int myacia_snapshot_write_module(snapshot_t *p)
{
    snapshot_module_t *m;

    m = snapshot_module_create(p, module_name, (BYTE)ACIA_DUMP_VER_MAJOR,
                               (BYTE)ACIA_DUMP_VER_MINOR);
    if (m == NULL) {
        return -1;
    }

    SMW_B(m, acia.txdata);
    SMW_B(m, acia.rxdata);
    SMW_B(m, (BYTE)(acia_get_status() | (acia.irq ? ACIA_SR_BITS_IRQ : 0)));
    SMW_B(m, acia.cmd);
    SMW_B(m, acia.ctrl);
    SMW_B(m, (BYTE)(acia.in_tx));

    if (acia.alarm_active_tx) {
        SMW_DW(m, (acia.alarm_clk_tx - myclk));
    } else {
        SMW_DW(m, 0);
    }

    /* new with VICE 2.0.9 */

    if (acia.alarm_active_rx) {
        SMW_DW(m, (acia.alarm_clk_rx - myclk));
    } else {
        SMW_DW(m, 0);
    }

    snapshot_module_close(m);

    return 0;
}

int finalexpansion_snapshot_write_module(snapshot_t *s)
{
    snapshot_module_t *m;

    m = snapshot_module_create(s, SNAP_MODULE_NAME, VIC20CART_DUMP_VER_MAJOR, VIC20CART_DUMP_VER_MINOR);
    if (m == NULL) {
        return -1;
    }

    if (0
        || (SMW_B(m, register_a) < 0)
        || (SMW_B(m, register_b) < 0)
        || (SMW_B(m, lock_bit) < 0)
        || (SMW_BA(m, cart_ram, CART_RAM_SIZE) < 0)
        || (SMW_BA(m, flash_state.flash_data, CART_ROM_SIZE) < 0)) {
        snapshot_module_close(m);
        return -1;
    }

    snapshot_module_close(m);

    if ((flash040core_snapshot_write_module(s, &flash_state, FLASH_SNAP_MODULE_NAME) < 0)) {
        return -1;
    }

    return 0;
}

int fdc_snapshot_write_module(snapshot_t *p, int fnum)
{
    snapshot_module_t *m;
    char *name;

    if (fdc[fnum].fdc_state == FDC_UNUSED) {
        return 0;
    }

    name = lib_msprintf("FDC%i", fnum);

    m = snapshot_module_create(p, name,
                              FDC_DUMP_VER_MAJOR, FDC_DUMP_VER_MINOR);
    lib_free(name);
    if (m == NULL)
        return -1;

    SMW_B(m, (BYTE)(fdc[fnum].fdc_state));

    /* clk till next invocation */
    SMW_DW(m,
                                (DWORD)(fdc[fnum].alarm_clk - drive_clk[fnum]));

    /* number of drives - so far 1 only */
    SMW_B(m, 1);

    /* last accessed track/sector */
    SMW_B(m, ((BYTE)(fdc[fnum].last_track)));
    SMW_B(m, ((BYTE)(fdc[fnum].last_sector)));

    snapshot_module_close(m);

    return 0;
}

int easyflash_snapshot_write_module(snapshot_t *s)
{
    snapshot_module_t *m;

    m = snapshot_module_create(s, SNAP_MODULE_NAME,
                          CART_DUMP_VER_MAJOR, CART_DUMP_VER_MINOR);
    if (m == NULL) {
        return -1;
    }

    if (0
        || (SMW_B(m, (BYTE)easyflash_jumper) < 0)
        || (SMW_B(m, easyflash_register_00) < 0)
        || (SMW_B(m, easyflash_register_02) < 0)
        || (SMW_BA(m, easyflash_ram, 256) < 0)
        || (SMW_BA(m, roml_banks, 0x80000) < 0)
        || (SMW_BA(m, romh_banks, 0x80000) < 0)) {
        snapshot_module_close(m);
        return -1;
    }

    snapshot_module_close(m);

    if (0
        || (flash040core_snapshot_write_module(s, easyflash_state_low, FLASH_SNAP_MODULE_NAME) < 0)
        || (flash040core_snapshot_write_module(s, easyflash_state_high, FLASH_SNAP_MODULE_NAME) < 0)) {
        return -1;
    }

    return 0;
}

static int drive_snapshot_write_image_module(snapshot_t *s, unsigned int dnr)
{
    char snap_module_name[10];
    snapshot_module_t *m;
    BYTE sector_data[0x100];
    WORD word;
    disk_addr_t dadr;
    int rc;
    drive_t *drive;

    drive = drive_context[dnr]->drive;

    if (drive->image == NULL) {
        sprintf(snap_module_name, "NOIMAGE%i", dnr);
    } else {
        sprintf(snap_module_name, "IMAGE%i", dnr);
    }

    m = snapshot_module_create(s, snap_module_name, IMAGE_SNAP_MAJOR,
                               IMAGE_SNAP_MINOR);
    if (m == NULL) {
        return -1;
    }

    if (drive->image == NULL) {
        if (snapshot_module_close(m) < 0) {
            return -1;
        }

        return 0;
    }

    word = drive->image->type;
    SMW_W(m, word);

    /* we use the return code to step through the tracks. So we do not
       need any geometry info. */
    for (dadr.track = 1;; dadr.track++) {
        rc = 0;
        for (dadr.sector = 0;; dadr.sector++) {
            rc = disk_image_read_sector(drive->image, sector_data, &dadr);
            if (rc == 0) {
                SMW_BA(m, sector_data, 0x100);
            } else {
                break;
            }
        }
        if (dadr.sector == 0) {
            break;
        }
    }

    if (snapshot_module_close(m) < 0) {
        return -1;
    }
    return 0;
}

int vic_snapshot_write_module(snapshot_t *s)
{
    int i;
    snapshot_module_t *m;

    m = snapshot_module_create(s, snap_module_name, SNAP_MAJOR, SNAP_MINOR);
    if (m == NULL) {
        return -1;
    }

    if (SMW_B(m, (BYTE)VIC_RASTER_CYCLE(maincpu_clk)) < 0
        || SMW_W(m, (WORD)VIC_RASTER_Y(maincpu_clk)) < 0) {
        goto fail;
    }

    if (0
        || (SMW_W(m, (WORD)vic.area) < 0)
        || (SMW_W(m, (WORD)vic.fetch_state) < 0)
        || (SMW_DW(m, (DWORD)vic.raster_line) < 0)
        || (SMW_DW(m, (DWORD)vic.text_cols) < 0)
        || (SMW_DW(m, (DWORD)vic.text_lines) < 0)
        || (SMW_DW(m, (DWORD)vic.pending_text_cols) < 0)
        || (SMW_DW(m, (DWORD)vic.line_was_blank) < 0)
        || (SMW_DW(m, (DWORD)vic.memptr) < 0)
        || (SMW_DW(m, (DWORD)vic.memptr_inc) < 0)
        || (SMW_DW(m, (DWORD)vic.row_counter) < 0)
        || (SMW_DW(m, (DWORD)vic.buf_offset) < 0)
        || SMW_B(m, (BYTE)vic.light_pen.state) < 0
        || SMW_B(m, (BYTE)vic.light_pen.triggered) < 0
        || SMW_DW(m, (DWORD)vic.light_pen.x) < 0
        || SMW_DW(m, (DWORD)vic.light_pen.y) < 0
        || SMW_DW(m, (DWORD)vic.light_pen.x_extra_bits) < 0
        || SMW_DW(m, (DWORD)vic.light_pen.trigger_cycle) < 0
        || (SMW_B(m, vic.vbuf) < 0)) {
        goto fail;
    }

    /* Color RAM.  */
    if (SMW_BA(m, mem_ram + 0x9400, 0x400) < 0) {
        goto fail;
    }

    for (i = 0; i < 0x10; i++) {
        if (SMW_B(m, (BYTE)vic.regs[i]) < 0) {
            goto fail;
        }
    }

    return snapshot_module_close(m);

fail:
    if (m != NULL)
        snapshot_module_close(m);
    return -1;
}

int ds1216e_write_snapshot(rtc_ds1216e_t *context, snapshot_t *s)
{
    DWORD latch_lo = 0;
    DWORD latch_hi = 0;
    DWORD offset_lo = 0;
    DWORD offset_hi = 0;
    DWORD old_offset_lo = 0;
    DWORD old_offset_hi = 0;
    snapshot_module_t *m;

    /* time_t can be either 32bit or 64bit, so we save as 64bit */
#if (SIZE_OF_TIME_T == 8)
    latch_hi = (DWORD)(context->latch >> 32);
    latch_lo = (DWORD)(context->latch & 0xffffffff);
    offset_hi = (DWORD)(context->offset >> 32);
    offset_lo = (DWORD)(context->offset & 0xffffffff);
    old_offset_hi = (DWORD)(context->old_offset >> 32);
    old_offset_lo = (DWORD)(context->old_offset & 0xffffffff);
#else
    latch_lo = (DWORD)context->latch;
    offset_lo = (DWORD)context->offset;
    old_offset_lo = (DWORD)context->old_offset;
#endif

    m = snapshot_module_create(s, snap_module_name, SNAP_MAJOR, SNAP_MINOR);

    if (m == NULL) {
        return -1;
    }

    if (0
        || SMW_B(m, (BYTE)context->reset) < 0
        || SMW_B(m, (BYTE)context->inactive) < 0
        || SMW_B(m, (BYTE)context->hours12) < 0
        || SMW_B(m, (BYTE)context->pattern_pos) < 0
        || SMW_B(m, (BYTE)context->pattern_ignore) < 0
        || SMW_B(m, (BYTE)context->output) < 0
        || SMW_B(m, (BYTE)context->output_pos) < 0
        || SMW_DW(m, latch_hi) < 0
        || SMW_DW(m, latch_lo) < 0
        || SMW_DW(m, offset_hi) < 0
        || SMW_DW(m, offset_lo) < 0
        || SMW_DW(m, old_offset_hi) < 0
        || SMW_DW(m, old_offset_lo) < 0
        || SMW_BA(m, context->clock_regs, DS1216E_REG_SIZE) < 0
        || SMW_BA(m, context->old_clock_regs, DS1216E_REG_SIZE) < 0
        || SMW_BA(m, context->clock_regs_changed, DS1216E_REG_SIZE) < 0
        || SMW_STR(m, context->device) < 0) {
        snapshot_module_close(m);
        return -1;
    }
    return snapshot_module_close(m);
}

static int drive_snapshot_write_p64image_module(snapshot_t *s, unsigned int dnr)
{
    char snap_module_name[10];
    snapshot_module_t *m;
    drive_t *drive;
    TP64MemoryStream P64MemoryStreamInstance;
    PP64Image P64Image;

    drive = drive_context[dnr]->drive;
    sprintf(snap_module_name, "P64IMAGE%i", dnr);

    m = snapshot_module_create(s, snap_module_name, GCRIMAGE_SNAP_MAJOR,
                               GCRIMAGE_SNAP_MINOR);
    if (m == NULL) {
        return -1;
    }

    P64Image = (void*)drive->p64;

    if (P64Image == NULL) {
        if (m != NULL) {
            snapshot_module_close(m);
        }
        return -1;
    }

    P64MemoryStreamCreate(&P64MemoryStreamInstance);
    P64MemoryStreamClear(&P64MemoryStreamInstance);
    if (!P64ImageWriteToStream(P64Image, &P64MemoryStreamInstance)) {
        P64MemoryStreamDestroy(&P64MemoryStreamInstance);
        return -1;
    }

    if (SMW_DW(m, P64MemoryStreamInstance.Size) < 0 ||
        SMW_BA(m, P64MemoryStreamInstance.Data, P64MemoryStreamInstance.Size) < 0) {
        if (m != NULL) {
            snapshot_module_close(m);
        }
        P64MemoryStreamDestroy(&P64MemoryStreamInstance);
        return -1;
    }

    P64MemoryStreamDestroy(&P64MemoryStreamInstance);

    if (snapshot_module_close(m) < 0) {
        return -1;
    }

    return 0;
}

static int mem_write_rom_snapshot_module(snapshot_t *s)
{
    snapshot_module_t *m;
    int trapfl;

    /* Main memory module.  */

    m = snapshot_module_create(s, snap_rom_module_name,
                               SNAP_ROM_MAJOR, SNAP_ROM_MINOR);
    if (m == NULL)
        return -1;

    /* disable traps before saving the ROM */
    resources_get_int("VirtualDevices", &trapfl);
    resources_set_int("VirtualDevices", 0);

    if (0
        || SMW_BA(m, c128memrom_kernal_rom,  C128_KERNAL_ROM_SIZE) < 0
        || SMW_BA(m, c128memrom_basic_rom, C128_BASIC_ROM_SIZE) < 0
        || SMW_BA(m, c128memrom_basic_rom + C128_BASIC_ROM_SIZE,
        C128_EDITOR_ROM_SIZE) < 0
        || SMW_BA(m, mem_chargen_rom, C128_CHARGEN_ROM_SIZE) < 0)
        goto fail;

    /* FIXME: save cartridge ROM (& RAM?) areas:
       first write out the configuration, i.e.
       - type of cartridge (banking scheme type)
       - state of cartridge (active/which bank, ...)
       then the ROM/RAM arrays:
       - cartridge ROM areas
       - cartridge RAM areas
    */

    /* enable traps again when necessary */
    resources_set_int("VirtualDevices", trapfl);

    if (snapshot_module_close(m) < 0)
        goto fail;

    return 0;

 fail:
    /* enable traps again when necessary */
    resources_set_int("VirtualDevices", trapfl);

    if (m != NULL)
        snapshot_module_close(m);
    return -1;
}