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12#include "qemu/osdep.h"
13#include "qapi/error.h"
14#include "qemu-common.h"
15#include "sysemu/replay.h"
16#include "replay-internal.h"
17#include "sysemu/sysemu.h"
18#include "monitor/monitor.h"
19#include "qapi/qmp/qstring.h"
20#include "qemu/error-report.h"
21#include "migration/vmstate.h"
22#include "migration/snapshot.h"
23
24static void replay_pre_save(void *opaque)
25{
26 ReplayState *state = opaque;
27 state->file_offset = ftell(replay_file);
28}
29
30static int replay_post_load(void *opaque, int version_id)
31{
32 ReplayState *state = opaque;
33 fseek(replay_file, state->file_offset, SEEK_SET);
34
35
36 replay_fetch_data_kind();
37
38 return 0;
39}
40
41static const VMStateDescription vmstate_replay = {
42 .name = "replay",
43 .version_id = 1,
44 .minimum_version_id = 1,
45 .pre_save = replay_pre_save,
46 .post_load = replay_post_load,
47 .fields = (VMStateField[]) {
48 VMSTATE_INT64_ARRAY(cached_clock, ReplayState, REPLAY_CLOCK_COUNT),
49 VMSTATE_UINT64(current_step, ReplayState),
50 VMSTATE_INT32(instructions_count, ReplayState),
51 VMSTATE_UINT32(data_kind, ReplayState),
52 VMSTATE_UINT32(has_unread_data, ReplayState),
53 VMSTATE_UINT64(file_offset, ReplayState),
54 VMSTATE_UINT64(block_request_id, ReplayState),
55 VMSTATE_END_OF_LIST()
56 },
57};
58
59void replay_vmstate_register(void)
60{
61 vmstate_register(NULL, 0, &vmstate_replay, &replay_state);
62}
63
64void replay_vmstate_init(void)
65{
66 Error *err = NULL;
67
68 if (replay_snapshot) {
69 if (replay_mode == REPLAY_MODE_RECORD) {
70 if (save_snapshot(replay_snapshot, &err) != 0) {
71 error_report_err(err);
72 error_report("Could not create snapshot for icount record");
73 exit(1);
74 }
75 } else if (replay_mode == REPLAY_MODE_PLAY) {
76 if (load_snapshot(replay_snapshot, &err) != 0) {
77 error_report_err(err);
78 error_report("Could not load snapshot for icount replay");
79 exit(1);
80 }
81 }
82 }
83}
84