LXR qemu/include/migration/vmstate.h

   1/*
   2 * QEMU migration/snapshot declarations
   3 *
   4 * Copyright (c) 2009-2011 Red Hat, Inc.
   5 *
   6 * Original author: Juan Quintela <quintela@redhat.com>
   7 *
   8 * Permission is hereby granted, free of charge, to any person obtaining a copy
   9 * of this software and associated documentation files (the "Software"), to deal
  10 * in the Software without restriction, including without limitation the rights
  11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 * copies of the Software, and to permit persons to whom the Software is
  13 * furnished to do so, subject to the following conditions:
  14 *
  15 * The above copyright notice and this permission notice shall be included in
  16 * all copies or substantial portions of the Software.
  17 *
  18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24 * THE SOFTWARE.
  25 */
  26
  27#ifndef QEMU_VMSTATE_H
  28#define QEMU_VMSTATE_H
  29
  30#ifndef CONFIG_USER_ONLY
  31#include "migration/qemu-file.h"
  32#endif
  33#include "migration/qjson.h"
  34
  35typedef void SaveStateHandler(QEMUFile *f, void *opaque);
  36typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
  37
  38typedef struct SaveVMHandlers {
  39    /* This runs inside the iothread lock.  */
  40    void (*set_params)(const MigrationParams *params, void * opaque);
  41    SaveStateHandler *save_state;
  42
  43    void (*cleanup)(void *opaque);
  44    int (*save_live_complete_postcopy)(QEMUFile *f, void *opaque);
  45    int (*save_live_complete_precopy)(QEMUFile *f, void *opaque);
  46
  47    /* This runs both outside and inside the iothread lock.  */
  48    bool (*is_active)(void *opaque);
  49
  50    /* This runs outside the iothread lock in the migration case, and
  51     * within the lock in the savevm case.  The callback had better only
  52     * use data that is local to the migration thread or protected
  53     * by other locks.
  54     */
  55    int (*save_live_iterate)(QEMUFile *f, void *opaque);
  56
  57    /* This runs outside the iothread lock!  */
  58    int (*save_live_setup)(QEMUFile *f, void *opaque);
  59    void (*save_live_pending)(QEMUFile *f, void *opaque, uint64_t max_size,
  60                              uint64_t *non_postcopiable_pending,
  61                              uint64_t *postcopiable_pending);
  62    LoadStateHandler *load_state;
  63} SaveVMHandlers;
  64
  65int register_savevm(DeviceState *dev,
  66                    const char *idstr,
  67                    int instance_id,
  68                    int version_id,
  69                    SaveStateHandler *save_state,
  70                    LoadStateHandler *load_state,
  71                    void *opaque);
  72
  73int register_savevm_live(DeviceState *dev,
  74                         const char *idstr,
  75                         int instance_id,
  76                         int version_id,
  77                         SaveVMHandlers *ops,
  78                         void *opaque);
  79
  80void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque);
  81
  82typedef struct VMStateInfo VMStateInfo;
  83typedef struct VMStateDescription VMStateDescription;
  84
  85struct VMStateInfo {
  86    const char *name;
  87    int (*get)(QEMUFile *f, void *pv, size_t size);
  88    void (*put)(QEMUFile *f, void *pv, size_t size);
  89};
  90
  91enum VMStateFlags {
  92    /* Ignored */
  93    VMS_SINGLE           = 0x001,
  94
  95    /* The struct member at opaque + VMStateField.offset is a pointer
  96     * to the actual field (e.g. struct a { uint8_t *b;
  97     * }). Dereference the pointer before using it as basis for
  98     * further pointer arithmetic (see e.g. VMS_ARRAY). Does not
  99     * affect the meaning of VMStateField.num_offset or
 100     * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for
 101     * those. */
 102    VMS_POINTER          = 0x002,
 103
 104    /* The field is an array of fixed size. VMStateField.num contains
 105     * the number of entries in the array. The size of each entry is
 106     * given by VMStateField.size and / or opaque +
 107     * VMStateField.size_offset; see VMS_VBUFFER and
 108     * VMS_MULTIPLY. Each array entry will be processed individually
 109     * (VMStateField.info.get()/put() if VMS_STRUCT is not set,
 110     * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not
 111     * be combined with VMS_VARRAY*. */
 112    VMS_ARRAY            = 0x004,
 113
 114    /* The field is itself a struct, containing one or more
 115     * fields. Recurse into VMStateField.vmsd. Most useful in
 116     * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each
 117     * array entry. */
 118    VMS_STRUCT           = 0x008,
 119
 120    /* The field is an array of variable size. The int32_t at opaque +
 121     * VMStateField.num_offset contains the number of entries in the
 122     * array. See the VMS_ARRAY description regarding array handling
 123     * in general. May not be combined with VMS_ARRAY or any other
 124     * VMS_VARRAY*. */
 125    VMS_VARRAY_INT32     = 0x010,
 126
 127    /* Ignored */
 128    VMS_BUFFER           = 0x020,
 129
 130    /* The field is a (fixed-size or variable-size) array of pointers
 131     * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry
 132     * before using it. Note: Does not imply any one of VMS_ARRAY /
 133     * VMS_VARRAY*; these need to be set explicitly. */
 134    VMS_ARRAY_OF_POINTER = 0x040,
 135
 136    /* The field is an array of variable size. The uint16_t at opaque
 137     * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
 138     * contains the number of entries in the array. See the VMS_ARRAY
 139     * description regarding array handling in general. May not be
 140     * combined with VMS_ARRAY or any other VMS_VARRAY*. */
 141    VMS_VARRAY_UINT16    = 0x080,
 142
 143    /* The size of the individual entries (a single array entry if
 144     * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if
 145     * neither is set) is variable (i.e. not known at compile-time),
 146     * but the same for all entries. Use the int32_t at opaque +
 147     * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine
 148     * the size of each (and every) entry. */
 149    VMS_VBUFFER          = 0x100,
 150
 151    /* Multiply the entry size given by the int32_t at opaque +
 152     * VMStateField.size_offset (see VMS_VBUFFER description) with
 153     * VMStateField.size to determine the number of bytes to be
 154     * allocated. Only valid in combination with VMS_VBUFFER. */
 155    VMS_MULTIPLY         = 0x200,
 156
 157    /* The field is an array of variable size. The uint8_t at opaque +
 158     * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
 159     * contains the number of entries in the array. See the VMS_ARRAY
 160     * description regarding array handling in general. May not be
 161     * combined with VMS_ARRAY or any other VMS_VARRAY*. */
 162    VMS_VARRAY_UINT8     = 0x400,
 163
 164    /* The field is an array of variable size. The uint32_t at opaque
 165     * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
 166     * contains the number of entries in the array. See the VMS_ARRAY
 167     * description regarding array handling in general. May not be
 168     * combined with VMS_ARRAY or any other VMS_VARRAY*. */
 169    VMS_VARRAY_UINT32    = 0x800,
 170
 171    /* Fail loading the serialised VM state if this field is missing
 172     * from the input. */
 173    VMS_MUST_EXIST       = 0x1000,
 174
 175    /* When loading serialised VM state, allocate memory for the
 176     * (entire) field. Only valid in combination with
 177     * VMS_POINTER. Note: Not all combinations with other flags are
 178     * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't
 179     * cause the individual entries to be allocated. */
 180    VMS_ALLOC            = 0x2000,
 181
 182    /* Multiply the number of entries given by the integer at opaque +
 183     * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num
 184     * to determine the number of entries in the array. Only valid in
 185     * combination with one of VMS_VARRAY*. */
 186    VMS_MULTIPLY_ELEMENTS = 0x4000,
 187};
 188
 189typedef struct {
 190    const char *name;
 191    size_t offset;
 192    size_t size;
 193    size_t start;
 194    int num;
 195    size_t num_offset;
 196    size_t size_offset;
 197    const VMStateInfo *info;
 198    enum VMStateFlags flags;
 199    const VMStateDescription *vmsd;
 200    int version_id;
 201    bool (*field_exists)(void *opaque, int version_id);
 202} VMStateField;
 203
 204struct VMStateDescription {
 205    const char *name;
 206    int unmigratable;
 207    int version_id;
 208    int minimum_version_id;
 209    int minimum_version_id_old;
 210    LoadStateHandler *load_state_old;
 211    int (*pre_load)(void *opaque);
 212    int (*post_load)(void *opaque, int version_id);
 213    void (*pre_save)(void *opaque);
 214    bool (*needed)(void *opaque);
 215    VMStateField *fields;
 216    const VMStateDescription **subsections;
 217};
 218
 219extern const VMStateDescription vmstate_dummy;
 220
 221extern const VMStateInfo vmstate_info_bool;
 222
 223extern const VMStateInfo vmstate_info_int8;
 224extern const VMStateInfo vmstate_info_int16;
 225extern const VMStateInfo vmstate_info_int32;
 226extern const VMStateInfo vmstate_info_int64;
 227
 228extern const VMStateInfo vmstate_info_uint8_equal;
 229extern const VMStateInfo vmstate_info_uint16_equal;
 230extern const VMStateInfo vmstate_info_int32_equal;
 231extern const VMStateInfo vmstate_info_uint32_equal;
 232extern const VMStateInfo vmstate_info_uint64_equal;
 233extern const VMStateInfo vmstate_info_int32_le;
 234
 235extern const VMStateInfo vmstate_info_uint8;
 236extern const VMStateInfo vmstate_info_uint16;
 237extern const VMStateInfo vmstate_info_uint32;
 238extern const VMStateInfo vmstate_info_uint64;
 239
 240extern const VMStateInfo vmstate_info_float64;
 241extern const VMStateInfo vmstate_info_cpudouble;
 242
 243extern const VMStateInfo vmstate_info_timer;
 244extern const VMStateInfo vmstate_info_buffer;
 245extern const VMStateInfo vmstate_info_unused_buffer;
 246extern const VMStateInfo vmstate_info_bitmap;
 247
 248#define type_check_2darray(t1,t2,n,m) ((t1(*)[n][m])0 - (t2*)0)
 249#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
 250#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
 251
 252#define vmstate_offset_value(_state, _field, _type)                  \
 253    (offsetof(_state, _field) +                                      \
 254     type_check(_type, typeof_field(_state, _field)))
 255
 256#define vmstate_offset_pointer(_state, _field, _type)                \
 257    (offsetof(_state, _field) +                                      \
 258     type_check_pointer(_type, typeof_field(_state, _field)))
 259
 260#define vmstate_offset_array(_state, _field, _type, _num)            \
 261    (offsetof(_state, _field) +                                      \
 262     type_check_array(_type, typeof_field(_state, _field), _num))
 263
 264#define vmstate_offset_2darray(_state, _field, _type, _n1, _n2)      \
 265    (offsetof(_state, _field) +                                      \
 266     type_check_2darray(_type, typeof_field(_state, _field), _n1, _n2))
 267
 268#define vmstate_offset_sub_array(_state, _field, _type, _start)      \
 269    vmstate_offset_value(_state, _field[_start], _type)
 270
 271#define vmstate_offset_buffer(_state, _field)                        \
 272    vmstate_offset_array(_state, _field, uint8_t,                    \
 273                         sizeof(typeof_field(_state, _field)))
 274
 275#define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \
 276    .name         = (stringify(_field)),                             \
 277    .version_id   = (_version),                                      \
 278    .field_exists = (_test),                                         \
 279    .size         = sizeof(_type),                                   \
 280    .info         = &(_info),                                        \
 281    .flags        = VMS_SINGLE,                                      \
 282    .offset       = vmstate_offset_value(_state, _field, _type),     \
 283}
 284
 285/* Validate state using a boolean predicate. */
 286#define VMSTATE_VALIDATE(_name, _test) { \
 287    .name         = (_name),                                         \
 288    .field_exists = (_test),                                         \
 289    .flags        = VMS_ARRAY | VMS_MUST_EXIST,                      \
 290    .num          = 0, /* 0 elements: no data, only run _test */     \
 291}
 292
 293#define VMSTATE_POINTER(_field, _state, _version, _info, _type) {    \
 294    .name       = (stringify(_field)),                               \
 295    .version_id = (_version),                                        \
 296    .info       = &(_info),                                          \
 297    .size       = sizeof(_type),                                     \
 298    .flags      = VMS_SINGLE|VMS_POINTER,                            \
 299    .offset     = vmstate_offset_value(_state, _field, _type),       \
 300}
 301
 302#define VMSTATE_POINTER_TEST(_field, _state, _test, _info, _type) {  \
 303    .name       = (stringify(_field)),                               \
 304    .info       = &(_info),                                          \
 305    .field_exists = (_test),                                         \
 306    .size       = sizeof(_type),                                     \
 307    .flags      = VMS_SINGLE|VMS_POINTER,                            \
 308    .offset     = vmstate_offset_value(_state, _field, _type),       \
 309}
 310
 311#define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
 312    .name       = (stringify(_field)),                               \
 313    .version_id = (_version),                                        \
 314    .num        = (_num),                                            \
 315    .info       = &(_info),                                          \
 316    .size       = sizeof(_type),                                     \
 317    .flags      = VMS_ARRAY,                                         \
 318    .offset     = vmstate_offset_array(_state, _field, _type, _num), \
 319}
 320
 321#define VMSTATE_2DARRAY(_field, _state, _n1, _n2, _version, _info, _type) { \
 322    .name       = (stringify(_field)),                                      \
 323    .version_id = (_version),                                               \
 324    .num        = (_n1) * (_n2),                                            \
 325    .info       = &(_info),                                                 \
 326    .size       = sizeof(_type),                                            \
 327    .flags      = VMS_ARRAY,                                                \
 328    .offset     = vmstate_offset_2darray(_state, _field, _type, _n1, _n2),  \
 329}
 330
 331#define VMSTATE_VARRAY_MULTIPLY(_field, _state, _field_num, _multiply, _info, _type) { \
 332    .name       = (stringify(_field)),                               \
 333    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 334    .num        = (_multiply),                                       \
 335    .info       = &(_info),                                          \
 336    .size       = sizeof(_type),                                     \
 337    .flags      = VMS_VARRAY_UINT32|VMS_MULTIPLY_ELEMENTS,           \
 338    .offset     = offsetof(_state, _field),                          \
 339}
 340
 341#define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
 342    .name         = (stringify(_field)),                              \
 343    .field_exists = (_test),                                          \
 344    .num          = (_num),                                           \
 345    .info         = &(_info),                                         \
 346    .size         = sizeof(_type),                                    \
 347    .flags        = VMS_ARRAY,                                        \
 348    .offset       = vmstate_offset_array(_state, _field, _type, _num),\
 349}
 350
 351#define VMSTATE_SUB_ARRAY(_field, _state, _start, _num, _version, _info, _type) { \
 352    .name       = (stringify(_field)),                               \
 353    .version_id = (_version),                                        \
 354    .num        = (_num),                                            \
 355    .info       = &(_info),                                          \
 356    .size       = sizeof(_type),                                     \
 357    .flags      = VMS_ARRAY,                                         \
 358    .offset     = vmstate_offset_sub_array(_state, _field, _type, _start), \
 359}
 360
 361#define VMSTATE_ARRAY_INT32_UNSAFE(_field, _state, _field_num, _info, _type) {\
 362    .name       = (stringify(_field)),                               \
 363    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 364    .info       = &(_info),                                          \
 365    .size       = sizeof(_type),                                     \
 366    .flags      = VMS_VARRAY_INT32,                                  \
 367    .offset     = offsetof(_state, _field),                          \
 368}
 369
 370#define VMSTATE_VARRAY_INT32(_field, _state, _field_num, _version, _info, _type) {\
 371    .name       = (stringify(_field)),                               \
 372    .version_id = (_version),                                        \
 373    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 374    .info       = &(_info),                                          \
 375    .size       = sizeof(_type),                                     \
 376    .flags      = VMS_VARRAY_INT32|VMS_POINTER,                      \
 377    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 378}
 379
 380#define VMSTATE_VARRAY_UINT32(_field, _state, _field_num, _version, _info, _type) {\
 381    .name       = (stringify(_field)),                               \
 382    .version_id = (_version),                                        \
 383    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 384    .info       = &(_info),                                          \
 385    .size       = sizeof(_type),                                     \
 386    .flags      = VMS_VARRAY_UINT32|VMS_POINTER,                     \
 387    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 388}
 389
 390#define VMSTATE_VARRAY_UINT32_ALLOC(_field, _state, _field_num, _version, _info, _type) {\
 391    .name       = (stringify(_field)),                               \
 392    .version_id = (_version),                                        \
 393    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 394    .info       = &(_info),                                          \
 395    .size       = sizeof(_type),                                     \
 396    .flags      = VMS_VARRAY_UINT32|VMS_POINTER|VMS_ALLOC,           \
 397    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 398}
 399
 400#define VMSTATE_VARRAY_UINT16_UNSAFE(_field, _state, _field_num, _version, _info, _type) {\
 401    .name       = (stringify(_field)),                               \
 402    .version_id = (_version),                                        \
 403    .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
 404    .info       = &(_info),                                          \
 405    .size       = sizeof(_type),                                     \
 406    .flags      = VMS_VARRAY_UINT16,                                 \
 407    .offset     = offsetof(_state, _field),                          \
 408}
 409
 410#define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \
 411    .name         = (stringify(_field)),                             \
 412    .version_id   = (_version),                                      \
 413    .field_exists = (_test),                                         \
 414    .vmsd         = &(_vmsd),                                        \
 415    .size         = sizeof(_type),                                   \
 416    .flags        = VMS_STRUCT,                                      \
 417    .offset       = vmstate_offset_value(_state, _field, _type),     \
 418}
 419
 420#define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \
 421    .name         = (stringify(_field)),                             \
 422    .version_id   = (_version),                                        \
 423    .vmsd         = &(_vmsd),                                        \
 424    .size         = sizeof(_type *),                                 \
 425    .flags        = VMS_STRUCT|VMS_POINTER,                          \
 426    .offset       = vmstate_offset_pointer(_state, _field, _type),   \
 427}
 428
 429#define VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, _version, _vmsd, _type) { \
 430    .name         = (stringify(_field)),                             \
 431    .version_id   = (_version),                                        \
 432    .field_exists = (_test),                                         \
 433    .vmsd         = &(_vmsd),                                        \
 434    .size         = sizeof(_type *),                                 \
 435    .flags        = VMS_STRUCT|VMS_POINTER,                          \
 436    .offset       = vmstate_offset_pointer(_state, _field, _type),   \
 437}
 438
 439#define VMSTATE_ARRAY_OF_POINTER(_field, _state, _num, _version, _info, _type) {\
 440    .name       = (stringify(_field)),                               \
 441    .version_id = (_version),                                        \
 442    .num        = (_num),                                            \
 443    .info       = &(_info),                                          \
 444    .size       = sizeof(_type),                                     \
 445    .flags      = VMS_ARRAY|VMS_ARRAY_OF_POINTER,                    \
 446    .offset     = vmstate_offset_array(_state, _field, _type, _num), \
 447}
 448
 449#define VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, _v, _vmsd, _type) { \
 450    .name       = (stringify(_f)),                                   \
 451    .version_id = (_v),                                              \
 452    .num        = (_n),                                              \
 453    .vmsd       = &(_vmsd),                                          \
 454    .size       = sizeof(_type *),                                    \
 455    .flags      = VMS_ARRAY|VMS_STRUCT|VMS_ARRAY_OF_POINTER,         \
 456    .offset     = vmstate_offset_array(_s, _f, _type*, _n),          \
 457}
 458
 459#define VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, _num, _version, _vmsd, _type) { \
 460    .name       = (stringify(_field)),                                     \
 461    .version_id = (_version),                                              \
 462    .num        = (_num),                                                  \
 463    .vmsd       = &(_vmsd),                                                \
 464    .size       = sizeof(_type),                                           \
 465    .flags      = VMS_STRUCT|VMS_ARRAY,                                    \
 466    .offset     = vmstate_offset_sub_array(_state, _field, _type, _start), \
 467}
 468
 469#define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \
 470    .name         = (stringify(_field)),                             \
 471    .num          = (_num),                                          \
 472    .field_exists = (_test),                                         \
 473    .version_id   = (_version),                                      \
 474    .vmsd         = &(_vmsd),                                        \
 475    .size         = sizeof(_type),                                   \
 476    .flags        = VMS_STRUCT|VMS_ARRAY,                            \
 477    .offset       = vmstate_offset_array(_state, _field, _type, _num),\
 478}
 479
 480#define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \
 481    .name       = (stringify(_field)),                               \
 482    .num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \
 483    .version_id = (_version),                                        \
 484    .vmsd       = &(_vmsd),                                          \
 485    .size       = sizeof(_type),                                     \
 486    .flags      = VMS_STRUCT|VMS_VARRAY_UINT8,                       \
 487    .offset     = offsetof(_state, _field),                          \
 488}
 489
 490/* a variable length array (i.e. _type *_field) but we know the
 491 * length
 492 */
 493#define VMSTATE_STRUCT_VARRAY_POINTER_KNOWN(_field, _state, _num, _version, _vmsd, _type) { \
 494    .name       = (stringify(_field)),                               \
 495    .num          = (_num),                                          \
 496    .version_id = (_version),                                        \
 497    .vmsd       = &(_vmsd),                                          \
 498    .size       = sizeof(_type),                                     \
 499    .flags      = VMS_STRUCT|VMS_ARRAY|VMS_POINTER,                  \
 500    .offset     = offsetof(_state, _field),                          \
 501}
 502
 503#define VMSTATE_STRUCT_VARRAY_POINTER_INT32(_field, _state, _field_num, _vmsd, _type) { \
 504    .name       = (stringify(_field)),                               \
 505    .version_id = 0,                                                 \
 506    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 507    .size       = sizeof(_type),                                     \
 508    .vmsd       = &(_vmsd),                                          \
 509    .flags      = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT,       \
 510    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 511}
 512
 513#define VMSTATE_STRUCT_VARRAY_POINTER_UINT32(_field, _state, _field_num, _vmsd, _type) { \
 514    .name       = (stringify(_field)),                               \
 515    .version_id = 0,                                                 \
 516    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 517    .size       = sizeof(_type),                                     \
 518    .vmsd       = &(_vmsd),                                          \
 519    .flags      = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT,       \
 520    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 521}
 522
 523#define VMSTATE_STRUCT_VARRAY_POINTER_UINT16(_field, _state, _field_num, _vmsd, _type) { \
 524    .name       = (stringify(_field)),                               \
 525    .version_id = 0,                                                 \
 526    .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
 527    .size       = sizeof(_type),                                     \
 528    .vmsd       = &(_vmsd),                                          \
 529    .flags      = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT,      \
 530    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 531}
 532
 533#define VMSTATE_STRUCT_VARRAY_INT32(_field, _state, _field_num, _version, _vmsd, _type) { \
 534    .name       = (stringify(_field)),                               \
 535    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 536    .version_id = (_version),                                        \
 537    .vmsd       = &(_vmsd),                                          \
 538    .size       = sizeof(_type),                                     \
 539    .flags      = VMS_STRUCT|VMS_VARRAY_INT32,                       \
 540    .offset     = offsetof(_state, _field),                          \
 541}
 542
 543#define VMSTATE_STRUCT_VARRAY_UINT32(_field, _state, _field_num, _version, _vmsd, _type) { \
 544    .name       = (stringify(_field)),                               \
 545    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t), \
 546    .version_id = (_version),                                        \
 547    .vmsd       = &(_vmsd),                                          \
 548    .size       = sizeof(_type),                                     \
 549    .flags      = VMS_STRUCT|VMS_VARRAY_UINT32,                      \
 550    .offset     = offsetof(_state, _field),                          \
 551}
 552
 553#define VMSTATE_STRUCT_VARRAY_ALLOC(_field, _state, _field_num, _version, _vmsd, _type) {\
 554    .name       = (stringify(_field)),                               \
 555    .version_id = (_version),                                        \
 556    .vmsd       = &(_vmsd),                                          \
 557    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 558    .size       = sizeof(_type),                                     \
 559    .flags      = VMS_STRUCT|VMS_VARRAY_INT32|VMS_ALLOC|VMS_POINTER, \
 560    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 561}
 562
 563#define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
 564    .name         = (stringify(_field)),                             \
 565    .version_id   = (_version),                                      \
 566    .field_exists = (_test),                                         \
 567    .size         = (_size - _start),                                \
 568    .info         = &vmstate_info_buffer,                            \
 569    .flags        = VMS_BUFFER,                                      \
 570    .offset       = vmstate_offset_buffer(_state, _field) + _start,  \
 571}
 572
 573#define VMSTATE_VBUFFER_MULTIPLY(_field, _state, _version, _test, _start, _field_size, _multiply) { \
 574    .name         = (stringify(_field)),                             \
 575    .version_id   = (_version),                                      \
 576    .field_exists = (_test),                                         \
 577    .size_offset  = vmstate_offset_value(_state, _field_size, uint32_t),\
 578    .size         = (_multiply),                                      \
 579    .info         = &vmstate_info_buffer,                            \
 580    .flags        = VMS_VBUFFER|VMS_POINTER|VMS_MULTIPLY,            \
 581    .offset       = offsetof(_state, _field),                        \
 582    .start        = (_start),                                        \
 583}
 584
 585#define VMSTATE_VBUFFER(_field, _state, _version, _test, _start, _field_size) { \
 586    .name         = (stringify(_field)),                             \
 587    .version_id   = (_version),                                      \
 588    .field_exists = (_test),                                         \
 589    .size_offset  = vmstate_offset_value(_state, _field_size, int32_t),\
 590    .info         = &vmstate_info_buffer,                            \
 591    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
 592    .offset       = offsetof(_state, _field),                        \
 593    .start        = (_start),                                        \
 594}
 595
 596#define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _start, _field_size) { \
 597    .name         = (stringify(_field)),                             \
 598    .version_id   = (_version),                                      \
 599    .field_exists = (_test),                                         \
 600    .size_offset  = vmstate_offset_value(_state, _field_size, uint32_t),\
 601    .info         = &vmstate_info_buffer,                            \
 602    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
 603    .offset       = offsetof(_state, _field),                        \
 604    .start        = (_start),                                        \
 605}
 606
 607#define VMSTATE_VBUFFER_ALLOC_UINT32(_field, _state, _version, _test, _start, _field_size) { \
 608    .name         = (stringify(_field)),                             \
 609    .version_id   = (_version),                                      \
 610    .field_exists = (_test),                                         \
 611    .size_offset  = vmstate_offset_value(_state, _field_size, uint32_t),\
 612    .info         = &vmstate_info_buffer,                            \
 613    .flags        = VMS_VBUFFER|VMS_POINTER|VMS_ALLOC,               \
 614    .offset       = offsetof(_state, _field),                        \
 615    .start        = (_start),                                        \
 616}
 617
 618#define VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, _test, _version, _info, _size) { \
 619    .name       = (stringify(_field)),                               \
 620    .version_id = (_version),                                        \
 621    .field_exists = (_test),                                         \
 622    .size       = (_size),                                           \
 623    .info       = &(_info),                                          \
 624    .flags      = VMS_BUFFER,                                        \
 625    .offset     = offsetof(_state, _field),                          \
 626}
 627
 628#define VMSTATE_BUFFER_POINTER_UNSAFE(_field, _state, _version, _size) { \
 629    .name       = (stringify(_field)),                               \
 630    .version_id = (_version),                                        \
 631    .size       = (_size),                                           \
 632    .info       = &vmstate_info_buffer,                              \
 633    .flags      = VMS_BUFFER|VMS_POINTER,                            \
 634    .offset     = offsetof(_state, _field),                          \
 635}
 636
 637#define VMSTATE_UNUSED_BUFFER(_test, _version, _size) {              \
 638    .name         = "unused",                                        \
 639    .field_exists = (_test),                                         \
 640    .version_id   = (_version),                                      \
 641    .size         = (_size),                                         \
 642    .info         = &vmstate_info_unused_buffer,                     \
 643    .flags        = VMS_BUFFER,                                      \
 644}
 645
 646/* _field_size should be a int32_t field in the _state struct giving the
 647 * size of the bitmap _field in bits.
 648 */
 649#define VMSTATE_BITMAP(_field, _state, _version, _field_size) {      \
 650    .name         = (stringify(_field)),                             \
 651    .version_id   = (_version),                                      \
 652    .size_offset  = vmstate_offset_value(_state, _field_size, int32_t),\
 653    .info         = &vmstate_info_bitmap,                            \
 654    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
 655    .offset       = offsetof(_state, _field),                        \
 656}
 657
 658/* _f : field name
 659   _f_n : num of elements field_name
 660   _n : num of elements
 661   _s : struct state name
 662   _v : version
 663*/
 664
 665#define VMSTATE_SINGLE(_field, _state, _version, _info, _type)        \
 666    VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type)
 667
 668#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type)        \
 669    VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type)
 670
 671#define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type)          \
 672    VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type)
 673
 674#define VMSTATE_STRUCT_POINTER_TEST(_field, _state, _test, _vmsd, _type)     \
 675    VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, 0, _vmsd, _type)
 676
 677#define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \
 678    VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version,   \
 679            _vmsd, _type)
 680
 681#define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) \
 682    VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, NULL, _version, _info, \
 683            _size)
 684
 685#define VMSTATE_BOOL_V(_f, _s, _v)                                    \
 686    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_bool, bool)
 687
 688#define VMSTATE_INT8_V(_f, _s, _v)                                    \
 689    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t)
 690#define VMSTATE_INT16_V(_f, _s, _v)                                   \
 691    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t)
 692#define VMSTATE_INT32_V(_f, _s, _v)                                   \
 693    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t)
 694#define VMSTATE_INT64_V(_f, _s, _v)                                   \
 695    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t)
 696
 697#define VMSTATE_UINT8_V(_f, _s, _v)                                   \
 698    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t)
 699#define VMSTATE_UINT16_V(_f, _s, _v)                                  \
 700    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t)
 701#define VMSTATE_UINT32_V(_f, _s, _v)                                  \
 702    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t)
 703#define VMSTATE_UINT64_V(_f, _s, _v)                                  \
 704    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t)
 705
 706#define VMSTATE_BOOL(_f, _s)                                          \
 707    VMSTATE_BOOL_V(_f, _s, 0)
 708
 709#define VMSTATE_INT8(_f, _s)                                          \
 710    VMSTATE_INT8_V(_f, _s, 0)
 711#define VMSTATE_INT16(_f, _s)                                         \
 712    VMSTATE_INT16_V(_f, _s, 0)
 713#define VMSTATE_INT32(_f, _s)                                         \
 714    VMSTATE_INT32_V(_f, _s, 0)
 715#define VMSTATE_INT64(_f, _s)                                         \
 716    VMSTATE_INT64_V(_f, _s, 0)
 717
 718#define VMSTATE_UINT8(_f, _s)                                         \
 719    VMSTATE_UINT8_V(_f, _s, 0)
 720#define VMSTATE_UINT16(_f, _s)                                        \
 721    VMSTATE_UINT16_V(_f, _s, 0)
 722#define VMSTATE_UINT32(_f, _s)                                        \
 723    VMSTATE_UINT32_V(_f, _s, 0)
 724#define VMSTATE_UINT64(_f, _s)                                        \
 725    VMSTATE_UINT64_V(_f, _s, 0)
 726
 727#define VMSTATE_UINT8_EQUAL(_f, _s)                                   \
 728    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint8_equal, uint8_t)
 729
 730#define VMSTATE_UINT16_EQUAL(_f, _s)                                  \
 731    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint16_equal, uint16_t)
 732
 733#define VMSTATE_UINT16_EQUAL_V(_f, _s, _v)                            \
 734    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16_equal, uint16_t)
 735
 736#define VMSTATE_INT32_EQUAL(_f, _s)                                   \
 737    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_equal, int32_t)
 738
 739#define VMSTATE_UINT32_EQUAL_V(_f, _s, _v)                            \
 740    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32_equal, uint32_t)
 741
 742#define VMSTATE_UINT32_EQUAL(_f, _s)                                  \
 743    VMSTATE_UINT32_EQUAL_V(_f, _s, 0)
 744
 745#define VMSTATE_UINT64_EQUAL_V(_f, _s, _v)                            \
 746    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64_equal, uint64_t)
 747
 748#define VMSTATE_UINT64_EQUAL(_f, _s)                                  \
 749    VMSTATE_UINT64_EQUAL_V(_f, _s, 0)
 750
 751#define VMSTATE_INT32_POSITIVE_LE(_f, _s)                             \
 752    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
 753
 754#define VMSTATE_INT8_TEST(_f, _s, _t)                               \
 755    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int8, int8_t)
 756
 757#define VMSTATE_INT16_TEST(_f, _s, _t)                               \
 758    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int16, int16_t)
 759
 760#define VMSTATE_INT32_TEST(_f, _s, _t)                                  \
 761    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int32, int32_t)
 762
 763#define VMSTATE_INT64_TEST(_f, _s, _t)                                  \
 764    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int64, int64_t)
 765
 766#define VMSTATE_UINT8_TEST(_f, _s, _t)                               \
 767    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t)
 768
 769#define VMSTATE_UINT16_TEST(_f, _s, _t)                               \
 770    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t)
 771
 772#define VMSTATE_UINT32_TEST(_f, _s, _t)                                  \
 773    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint32, uint32_t)
 774
 775#define VMSTATE_UINT64_TEST(_f, _s, _t)                                  \
 776    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint64, uint64_t)
 777
 778
 779#define VMSTATE_FLOAT64_V(_f, _s, _v)                                 \
 780    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_float64, float64)
 781
 782#define VMSTATE_FLOAT64(_f, _s)                                       \
 783    VMSTATE_FLOAT64_V(_f, _s, 0)
 784
 785#define VMSTATE_TIMER_PTR_TEST(_f, _s, _test)                             \
 786    VMSTATE_POINTER_TEST(_f, _s, _test, vmstate_info_timer, QEMUTimer *)
 787
 788#define VMSTATE_TIMER_PTR_V(_f, _s, _v)                                   \
 789    VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *)
 790
 791#define VMSTATE_TIMER_PTR(_f, _s)                                         \
 792    VMSTATE_TIMER_PTR_V(_f, _s, 0)
 793
 794#define VMSTATE_TIMER_PTR_ARRAY(_f, _s, _n)                              \
 795    VMSTATE_ARRAY_OF_POINTER(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer *)
 796
 797#define VMSTATE_TIMER_TEST(_f, _s, _test)                             \
 798    VMSTATE_SINGLE_TEST(_f, _s, _test, 0, vmstate_info_timer, QEMUTimer)
 799
 800#define VMSTATE_TIMER_V(_f, _s, _v)                                   \
 801    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_timer, QEMUTimer)
 802
 803#define VMSTATE_TIMER(_f, _s)                                         \
 804    VMSTATE_TIMER_V(_f, _s, 0)
 805
 806#define VMSTATE_TIMER_ARRAY(_f, _s, _n)                              \
 807    VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer)
 808
 809#define VMSTATE_BOOL_ARRAY_V(_f, _s, _n, _v)                         \
 810    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_bool, bool)
 811
 812#define VMSTATE_BOOL_ARRAY(_f, _s, _n)                               \
 813    VMSTATE_BOOL_ARRAY_V(_f, _s, _n, 0)
 814
 815#define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v)                         \
 816    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t)
 817
 818#define VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, _v)                \
 819    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint16, uint16_t)
 820
 821#define VMSTATE_UINT16_ARRAY(_f, _s, _n)                               \
 822    VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0)
 823
 824#define VMSTATE_UINT16_2DARRAY(_f, _s, _n1, _n2)                      \
 825    VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, 0)
 826
 827#define VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, _v)                 \
 828    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint8, uint8_t)
 829
 830#define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v)                         \
 831    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t)
 832
 833#define VMSTATE_UINT8_ARRAY(_f, _s, _n)                               \
 834    VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0)
 835
 836#define VMSTATE_UINT8_SUB_ARRAY(_f, _s, _start, _num)                \
 837    VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint8, uint8_t)
 838
 839#define VMSTATE_UINT8_2DARRAY(_f, _s, _n1, _n2)                       \
 840    VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, 0)
 841
 842#define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v)                        \
 843    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)
 844
 845#define VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, _v)                \
 846    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint32, uint32_t)
 847
 848#define VMSTATE_UINT32_ARRAY(_f, _s, _n)                              \
 849    VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
 850
 851#define VMSTATE_UINT32_2DARRAY(_f, _s, _n1, _n2)                      \
 852    VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, 0)
 853
 854#define VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v)                        \
 855    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint64, uint64_t)
 856
 857#define VMSTATE_UINT64_ARRAY(_f, _s, _n)                              \
 858    VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0)
 859
 860#define VMSTATE_UINT64_2DARRAY(_f, _s, _n1, _n2)                      \
 861    VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, 0)
 862
 863#define VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, _v)                 \
 864    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint64, uint64_t)
 865
 866#define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v)                         \
 867    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int16, int16_t)
 868
 869#define VMSTATE_INT16_ARRAY(_f, _s, _n)                               \
 870    VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0)
 871
 872#define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v)                         \
 873    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t)
 874
 875#define VMSTATE_INT32_ARRAY(_f, _s, _n)                               \
 876    VMSTATE_INT32_ARRAY_V(_f, _s, _n, 0)
 877
 878#define VMSTATE_UINT32_SUB_ARRAY(_f, _s, _start, _num)                \
 879    VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint32, uint32_t)
 880
 881#define VMSTATE_INT64_ARRAY_V(_f, _s, _n, _v)                         \
 882    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int64, int64_t)
 883
 884#define VMSTATE_INT64_ARRAY(_f, _s, _n)                               \
 885    VMSTATE_INT64_ARRAY_V(_f, _s, _n, 0)
 886
 887#define VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, _v)                       \
 888    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_float64, float64)
 889
 890#define VMSTATE_FLOAT64_ARRAY(_f, _s, _n)                             \
 891    VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, 0)
 892
 893#define VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, _v)                     \
 894    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_cpudouble, CPU_DoubleU)
 895
 896#define VMSTATE_CPUDOUBLE_ARRAY(_f, _s, _n)                           \
 897    VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, 0)
 898
 899#define VMSTATE_BUFFER_V(_f, _s, _v)                                  \
 900    VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))
 901
 902#define VMSTATE_BUFFER(_f, _s)                                        \
 903    VMSTATE_BUFFER_V(_f, _s, 0)
 904
 905#define VMSTATE_PARTIAL_BUFFER(_f, _s, _size)                         \
 906    VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size)
 907
 908#define VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, _v) \
 909    VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, _start, sizeof(typeof_field(_s, _f)))
 910
 911#define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \
 912    VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, 0)
 913
 914#define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size)                        \
 915    VMSTATE_VBUFFER(_f, _s, 0, NULL, 0, _size)
 916
 917#define VMSTATE_PARTIAL_VBUFFER_UINT32(_f, _s, _size)                        \
 918    VMSTATE_VBUFFER_UINT32(_f, _s, 0, NULL, 0, _size)
 919
 920#define VMSTATE_SUB_VBUFFER(_f, _s, _start, _size)                    \
 921    VMSTATE_VBUFFER(_f, _s, 0, NULL, _start, _size)
 922
 923#define VMSTATE_BUFFER_TEST(_f, _s, _test)                            \
 924    VMSTATE_STATIC_BUFFER(_f, _s, 0, _test, 0, sizeof(typeof_field(_s, _f)))
 925
 926#define VMSTATE_BUFFER_UNSAFE(_field, _state, _version, _size)        \
 927    VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, vmstate_info_buffer, _size)
 928
 929#define VMSTATE_UNUSED_V(_v, _size)                                   \
 930    VMSTATE_UNUSED_BUFFER(NULL, _v, _size)
 931
 932#define VMSTATE_UNUSED(_size)                                         \
 933    VMSTATE_UNUSED_V(0, _size)
 934
 935#define VMSTATE_UNUSED_TEST(_test, _size)                             \
 936    VMSTATE_UNUSED_BUFFER(_test, 0, _size)
 937
 938#define VMSTATE_END_OF_LIST()                                         \
 939    {}
 940
 941#define SELF_ANNOUNCE_ROUNDS 5
 942
 943void loadvm_free_handlers(MigrationIncomingState *mis);
 944
 945int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
 946                       void *opaque, int version_id);
 947void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
 948                        void *opaque, QJSON *vmdesc);
 949
 950bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque);
 951
 952int vmstate_register_with_alias_id(DeviceState *dev, int instance_id,
 953                                   const VMStateDescription *vmsd,
 954                                   void *base, int alias_id,
 955                                   int required_for_version);
 956
 957static inline int vmstate_register(DeviceState *dev, int instance_id,
 958                                   const VMStateDescription *vmsd,
 959                                   void *opaque)
 960{
 961    return vmstate_register_with_alias_id(dev, instance_id, vmsd,
 962                                          opaque, -1, 0);
 963}
 964
 965void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
 966                        void *opaque);
 967
 968struct MemoryRegion;
 969void vmstate_register_ram(struct MemoryRegion *memory, DeviceState *dev);
 970void vmstate_unregister_ram(struct MemoryRegion *memory, DeviceState *dev);
 971void vmstate_register_ram_global(struct MemoryRegion *memory);
 972
 973static inline
 974int64_t self_announce_delay(int round)
 975{
 976    assert(round < SELF_ANNOUNCE_ROUNDS && round > 0);
 977    /* delay 50ms, 150ms, 250ms, ... */
 978    return 50 + (SELF_ANNOUNCE_ROUNDS - round - 1) * 100;
 979}
 980
 981void dump_vmstate_json_to_file(FILE *out_fp);
 982
 983#endif
 984