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#ifndef QEMU_VMSTATE_H
  27#define QEMU_VMSTATE_H 1
  28
  29#ifndef CONFIG_USER_ONLY
  30#include <migration/qemu-file.h>
  31#endif
  32#include <qjson.h>
  33
  34typedef void SaveStateHandler(QEMUFile *f, void *opaque);
  35typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);
  36
  37typedef struct SaveVMHandlers {
  38    /* This runs inside the iothread lock.  */
  39    void (*set_params)(const MigrationParams *params, void * opaque);
  40    SaveStateHandler *save_state;
  41
  42    void (*cleanup)(void *opaque);
  43    int (*save_live_complete_postcopy)(QEMUFile *f, void *opaque);
  44    int (*save_live_complete_precopy)(QEMUFile *f, void *opaque);
  45
  46    /* This runs both outside and inside the iothread lock.  */
  47    bool (*is_active)(void *opaque);
  48
  49    /* This runs outside the iothread lock in the migration case, and
  50     * within the lock in the savevm case.  The callback had better only
  51     * use data that is local to the migration thread or protected
  52     * by other locks.
  53     */
  54    int (*save_live_iterate)(QEMUFile *f, void *opaque);
  55
  56    /* This runs outside the iothread lock!  */
  57    int (*save_live_setup)(QEMUFile *f, void *opaque);
  58    void (*save_live_pending)(QEMUFile *f, void *opaque, uint64_t max_size,
  59                              uint64_t *non_postcopiable_pending,
  60                              uint64_t *postcopiable_pending);
  61    LoadStateHandler *load_state;
  62} SaveVMHandlers;
  63
  64int register_savevm(DeviceState *dev,
  65                    const char *idstr,
  66                    int instance_id,
  67                    int version_id,
  68                    SaveStateHandler *save_state,
  69                    LoadStateHandler *load_state,
  70                    void *opaque);
  71
  72int register_savevm_live(DeviceState *dev,
  73                         const char *idstr,
  74                         int instance_id,
  75                         int version_id,
  76                         SaveVMHandlers *ops,
  77                         void *opaque);
  78
  79void unregister_savevm(DeviceState *dev, const char *idstr, void *opaque);
  80
  81typedef struct VMStateInfo VMStateInfo;
  82typedef struct VMStateDescription VMStateDescription;
  83
  84struct VMStateInfo {
  85    const char *name;
  86    int (*get)(QEMUFile *f, void *pv, size_t size);
  87    void (*put)(QEMUFile *f, void *pv, size_t size);
  88};
  89
  90enum VMStateFlags {
  91    /* Ignored */
  92    VMS_SINGLE           = 0x001,
  93
  94    /* The struct member at opaque + VMStateField.offset is a pointer
  95     * to the actual field (e.g. struct a { uint8_t *b;
  96     * }). Dereference the pointer before using it as basis for
  97     * further pointer arithmetic (see e.g. VMS_ARRAY). Does not
  98     * affect the meaning of VMStateField.num_offset or
  99     * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for
 100     * those. */
 101    VMS_POINTER          = 0x002,
 102
 103    /* The field is an array of fixed size. VMStateField.num contains
 104     * the number of entries in the array. The size of each entry is
 105     * given by VMStateField.size and / or opaque +
 106     * VMStateField.size_offset; see VMS_VBUFFER and
 107     * VMS_MULTIPLY. Each array entry will be processed individually
 108     * (VMStateField.info.get()/put() if VMS_STRUCT is not set,
 109     * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not
 110     * be combined with VMS_VARRAY*. */
 111    VMS_ARRAY            = 0x004,
 112
 113    /* The field is itself a struct, containing one or more
 114     * fields. Recurse into VMStateField.vmsd. Most useful in
 115     * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each
 116     * array entry. */
 117    VMS_STRUCT           = 0x008,
 118
 119    /* The field is an array of variable size. The int32_t at opaque +
 120     * VMStateField.num_offset contains the number of entries in the
 121     * array. See the VMS_ARRAY description regarding array handling
 122     * in general. May not be combined with VMS_ARRAY or any other
 123     * VMS_VARRAY*. */
 124    VMS_VARRAY_INT32     = 0x010,
 125
 126    /* Ignored */
 127    VMS_BUFFER           = 0x020,
 128
 129    /* The field is a (fixed-size or variable-size) array of pointers
 130     * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry
 131     * before using it. Note: Does not imply any one of VMS_ARRAY /
 132     * VMS_VARRAY*; these need to be set explicitly. */
 133    VMS_ARRAY_OF_POINTER = 0x040,
 134
 135    /* The field is an array of variable size. The uint16_t at opaque
 136     * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
 137     * contains the number of entries in the array. See the VMS_ARRAY
 138     * description regarding array handling in general. May not be
 139     * combined with VMS_ARRAY or any other VMS_VARRAY*. */
 140    VMS_VARRAY_UINT16    = 0x080,
 141
 142    /* The size of the individual entries (a single array entry if
 143     * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if
 144     * neither is set) is variable (i.e. not known at compile-time),
 145     * but the same for all entries. Use the int32_t at opaque +
 146     * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine
 147     * the size of each (and every) entry. */
 148    VMS_VBUFFER          = 0x100,
 149
 150    /* Multiply the entry size given by the int32_t at opaque +
 151     * VMStateField.size_offset (see VMS_VBUFFER description) with
 152     * VMStateField.size to determine the number of bytes to be
 153     * allocated. Only valid in combination with VMS_VBUFFER. */
 154    VMS_MULTIPLY         = 0x200,
 155
 156    /* The field is an array of variable size. The uint8_t at opaque +
 157     * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
 158     * contains the number of entries in the array. See the VMS_ARRAY
 159     * description regarding array handling in general. May not be
 160     * combined with VMS_ARRAY or any other VMS_VARRAY*. */
 161    VMS_VARRAY_UINT8     = 0x400,
 162
 163    /* The field is an array of variable size. The uint32_t at opaque
 164     * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
 165     * contains the number of entries in the array. See the VMS_ARRAY
 166     * description regarding array handling in general. May not be
 167     * combined with VMS_ARRAY or any other VMS_VARRAY*. */
 168    VMS_VARRAY_UINT32    = 0x800,
 169
 170    /* Fail loading the serialised VM state if this field is missing
 171     * from the input. */
 172    VMS_MUST_EXIST       = 0x1000,
 173
 174    /* When loading serialised VM state, allocate memory for the
 175     * (entire) field. Only valid in combination with
 176     * VMS_POINTER. Note: Not all combinations with other flags are
 177     * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't
 178     * cause the individual entries to be allocated. */
 179    VMS_ALLOC            = 0x2000,
 180
 181    /* Multiply the number of entries given by the integer at opaque +
 182     * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num
 183     * to determine the number of entries in the array. Only valid in
 184     * combination with one of VMS_VARRAY*. */
 185    VMS_MULTIPLY_ELEMENTS = 0x4000,
 186};
 187
 188typedef struct {
 189    const char *name;
 190    size_t offset;
 191    size_t size;
 192    size_t start;
 193    int num;
 194    size_t num_offset;
 195    size_t size_offset;
 196    const VMStateInfo *info;
 197    enum VMStateFlags flags;
 198    const VMStateDescription *vmsd;
 199    int version_id;
 200    bool (*field_exists)(void *opaque, int version_id);
 201} VMStateField;
 202
 203struct VMStateDescription {
 204    const char *name;
 205    int unmigratable;
 206    int version_id;
 207    int minimum_version_id;
 208    int minimum_version_id_old;
 209    LoadStateHandler *load_state_old;
 210    int (*pre_load)(void *opaque);
 211    int (*post_load)(void *opaque, int version_id);
 212    void (*pre_save)(void *opaque);
 213    bool (*needed)(void *opaque);
 214    VMStateField *fields;
 215    const VMStateDescription **subsections;
 216};
 217
 218extern const VMStateDescription vmstate_dummy;
 219
 220extern const VMStateInfo vmstate_info_bool;
 221
 222extern const VMStateInfo vmstate_info_int8;
 223extern const VMStateInfo vmstate_info_int16;
 224extern const VMStateInfo vmstate_info_int32;
 225extern const VMStateInfo vmstate_info_int64;
 226
 227extern const VMStateInfo vmstate_info_uint8_equal;
 228extern const VMStateInfo vmstate_info_uint16_equal;
 229extern const VMStateInfo vmstate_info_int32_equal;
 230extern const VMStateInfo vmstate_info_uint32_equal;
 231extern const VMStateInfo vmstate_info_uint64_equal;
 232extern const VMStateInfo vmstate_info_int32_le;
 233
 234extern const VMStateInfo vmstate_info_uint8;
 235extern const VMStateInfo vmstate_info_uint16;
 236extern const VMStateInfo vmstate_info_uint32;
 237extern const VMStateInfo vmstate_info_uint64;
 238
 239extern const VMStateInfo vmstate_info_float64;
 240extern const VMStateInfo vmstate_info_cpudouble;
 241
 242extern const VMStateInfo vmstate_info_timer;
 243extern const VMStateInfo vmstate_info_buffer;
 244extern const VMStateInfo vmstate_info_unused_buffer;
 245extern const VMStateInfo vmstate_info_bitmap;
 246
 247#define type_check_2darray(t1,t2,n,m) ((t1(*)[n][m])0 - (t2*)0)
 248#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
 249#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
 250
 251#define vmstate_offset_value(_state, _field, _type)                  \
 252    (offsetof(_state, _field) +                                      \
 253     type_check(_type, typeof_field(_state, _field)))
 254
 255#define vmstate_offset_pointer(_state, _field, _type)                \
 256    (offsetof(_state, _field) +                                      \
 257     type_check_pointer(_type, typeof_field(_state, _field)))
 258
 259#define vmstate_offset_array(_state, _field, _type, _num)            \
 260    (offsetof(_state, _field) +                                      \
 261     type_check_array(_type, typeof_field(_state, _field), _num))
 262
 263#define vmstate_offset_2darray(_state, _field, _type, _n1, _n2)      \
 264    (offsetof(_state, _field) +                                      \
 265     type_check_2darray(_type, typeof_field(_state, _field), _n1, _n2))
 266
 267#define vmstate_offset_sub_array(_state, _field, _type, _start)      \
 268    vmstate_offset_value(_state, _field[_start], _type)
 269
 270#define vmstate_offset_buffer(_state, _field)                        \
 271    vmstate_offset_array(_state, _field, uint8_t,                    \
 272                         sizeof(typeof_field(_state, _field)))
 273
 274#define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \
 275    .name         = (stringify(_field)),                             \
 276    .version_id   = (_version),                                      \
 277    .field_exists = (_test),                                         \
 278    .size         = sizeof(_type),                                   \
 279    .info         = &(_info),                                        \
 280    .flags        = VMS_SINGLE,                                      \
 281    .offset       = vmstate_offset_value(_state, _field, _type),     \
 282}
 283
 284/* Validate state using a boolean predicate. */
 285#define VMSTATE_VALIDATE(_name, _test) { \
 286    .name         = (_name),                                         \
 287    .field_exists = (_test),                                         \
 288    .flags        = VMS_ARRAY | VMS_MUST_EXIST,                      \
 289    .num          = 0, /* 0 elements: no data, only run _test */     \
 290}
 291
 292#define VMSTATE_POINTER(_field, _state, _version, _info, _type) {    \
 293    .name       = (stringify(_field)),                               \
 294    .version_id = (_version),                                        \
 295    .info       = &(_info),                                          \
 296    .size       = sizeof(_type),                                     \
 297    .flags      = VMS_SINGLE|VMS_POINTER,                            \
 298    .offset     = vmstate_offset_value(_state, _field, _type),       \
 299}
 300
 301#define VMSTATE_POINTER_TEST(_field, _state, _test, _info, _type) {  \
 302    .name       = (stringify(_field)),                               \
 303    .info       = &(_info),                                          \
 304    .field_exists = (_test),                                         \
 305    .size       = sizeof(_type),                                     \
 306    .flags      = VMS_SINGLE|VMS_POINTER,                            \
 307    .offset     = vmstate_offset_value(_state, _field, _type),       \
 308}
 309
 310#define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
 311    .name       = (stringify(_field)),                               \
 312    .version_id = (_version),                                        \
 313    .num        = (_num),                                            \
 314    .info       = &(_info),                                          \
 315    .size       = sizeof(_type),                                     \
 316    .flags      = VMS_ARRAY,                                         \
 317    .offset     = vmstate_offset_array(_state, _field, _type, _num), \
 318}
 319
 320#define VMSTATE_2DARRAY(_field, _state, _n1, _n2, _version, _info, _type) { \
 321    .name       = (stringify(_field)),                                      \
 322    .version_id = (_version),                                               \
 323    .num        = (_n1) * (_n2),                                            \
 324    .info       = &(_info),                                                 \
 325    .size       = sizeof(_type),                                            \
 326    .flags      = VMS_ARRAY,                                                \
 327    .offset     = vmstate_offset_2darray(_state, _field, _type, _n1, _n2),  \
 328}
 329
 330#define VMSTATE_VARRAY_MULTIPLY(_field, _state, _field_num, _multiply, _info, _type) { \
 331    .name       = (stringify(_field)),                               \
 332    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 333    .num        = (_multiply),                                       \
 334    .info       = &(_info),                                          \
 335    .size       = sizeof(_type),                                     \
 336    .flags      = VMS_VARRAY_UINT32|VMS_MULTIPLY_ELEMENTS,           \
 337    .offset     = offsetof(_state, _field),                          \
 338}
 339
 340#define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
 341    .name         = (stringify(_field)),                              \
 342    .field_exists = (_test),                                          \
 343    .num          = (_num),                                           \
 344    .info         = &(_info),                                         \
 345    .size         = sizeof(_type),                                    \
 346    .flags        = VMS_ARRAY,                                        \
 347    .offset       = vmstate_offset_array(_state, _field, _type, _num),\
 348}
 349
 350#define VMSTATE_SUB_ARRAY(_field, _state, _start, _num, _version, _info, _type) { \
 351    .name       = (stringify(_field)),                               \
 352    .version_id = (_version),                                        \
 353    .num        = (_num),                                            \
 354    .info       = &(_info),                                          \
 355    .size       = sizeof(_type),                                     \
 356    .flags      = VMS_ARRAY,                                         \
 357    .offset     = vmstate_offset_sub_array(_state, _field, _type, _start), \
 358}
 359
 360#define VMSTATE_ARRAY_INT32_UNSAFE(_field, _state, _field_num, _info, _type) {\
 361    .name       = (stringify(_field)),                               \
 362    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 363    .info       = &(_info),                                          \
 364    .size       = sizeof(_type),                                     \
 365    .flags      = VMS_VARRAY_INT32,                                  \
 366    .offset     = offsetof(_state, _field),                          \
 367}
 368
 369#define VMSTATE_VARRAY_INT32(_field, _state, _field_num, _version, _info, _type) {\
 370    .name       = (stringify(_field)),                               \
 371    .version_id = (_version),                                        \
 372    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 373    .info       = &(_info),                                          \
 374    .size       = sizeof(_type),                                     \
 375    .flags      = VMS_VARRAY_INT32|VMS_POINTER,                      \
 376    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 377}
 378
 379#define VMSTATE_VARRAY_UINT32(_field, _state, _field_num, _version, _info, _type) {\
 380    .name       = (stringify(_field)),                               \
 381    .version_id = (_version),                                        \
 382    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 383    .info       = &(_info),                                          \
 384    .size       = sizeof(_type),                                     \
 385    .flags      = VMS_VARRAY_UINT32|VMS_POINTER,                     \
 386    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 387}
 388
 389#define VMSTATE_VARRAY_UINT16_UNSAFE(_field, _state, _field_num, _version, _info, _type) {\
 390    .name       = (stringify(_field)),                               \
 391    .version_id = (_version),                                        \
 392    .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
 393    .info       = &(_info),                                          \
 394    .size       = sizeof(_type),                                     \
 395    .flags      = VMS_VARRAY_UINT16,                                 \
 396    .offset     = offsetof(_state, _field),                          \
 397}
 398
 399#define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \
 400    .name         = (stringify(_field)),                             \
 401    .version_id   = (_version),                                      \
 402    .field_exists = (_test),                                         \
 403    .vmsd         = &(_vmsd),                                        \
 404    .size         = sizeof(_type),                                   \
 405    .flags        = VMS_STRUCT,                                      \
 406    .offset       = vmstate_offset_value(_state, _field, _type),     \
 407}
 408
 409#define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \
 410    .name         = (stringify(_field)),                             \
 411    .version_id   = (_version),                                        \
 412    .vmsd         = &(_vmsd),                                        \
 413    .size         = sizeof(_type *),                                 \
 414    .flags        = VMS_STRUCT|VMS_POINTER,                          \
 415    .offset       = vmstate_offset_pointer(_state, _field, _type),   \
 416}
 417
 418#define VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, _version, _vmsd, _type) { \
 419    .name         = (stringify(_field)),                             \
 420    .version_id   = (_version),                                        \
 421    .field_exists = (_test),                                         \
 422    .vmsd         = &(_vmsd),                                        \
 423    .size         = sizeof(_type *),                                 \
 424    .flags        = VMS_STRUCT|VMS_POINTER,                          \
 425    .offset       = vmstate_offset_pointer(_state, _field, _type),   \
 426}
 427
 428#define VMSTATE_ARRAY_OF_POINTER(_field, _state, _num, _version, _info, _type) {\
 429    .name       = (stringify(_field)),                               \
 430    .version_id = (_version),                                        \
 431    .num        = (_num),                                            \
 432    .info       = &(_info),                                          \
 433    .size       = sizeof(_type),                                     \
 434    .flags      = VMS_ARRAY|VMS_ARRAY_OF_POINTER,                    \
 435    .offset     = vmstate_offset_array(_state, _field, _type, _num), \
 436}
 437
 438#define VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, _v, _vmsd, _type) { \
 439    .name       = (stringify(_f)),                                   \
 440    .version_id = (_v),                                              \
 441    .num        = (_n),                                              \
 442    .vmsd       = &(_vmsd),                                          \
 443    .size       = sizeof(_type *),                                    \
 444    .flags      = VMS_ARRAY|VMS_STRUCT|VMS_ARRAY_OF_POINTER,         \
 445    .offset     = vmstate_offset_array(_s, _f, _type*, _n),          \
 446}
 447
 448#define VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, _num, _version, _vmsd, _type) { \
 449    .name       = (stringify(_field)),                                     \
 450    .version_id = (_version),                                              \
 451    .num        = (_num),                                                  \
 452    .vmsd       = &(_vmsd),                                                \
 453    .size       = sizeof(_type),                                           \
 454    .flags      = VMS_STRUCT|VMS_ARRAY,                                    \
 455    .offset     = vmstate_offset_sub_array(_state, _field, _type, _start), \
 456}
 457
 458#define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \
 459    .name         = (stringify(_field)),                             \
 460    .num          = (_num),                                          \
 461    .field_exists = (_test),                                         \
 462    .version_id   = (_version),                                      \
 463    .vmsd         = &(_vmsd),                                        \
 464    .size         = sizeof(_type),                                   \
 465    .flags        = VMS_STRUCT|VMS_ARRAY,                            \
 466    .offset       = vmstate_offset_array(_state, _field, _type, _num),\
 467}
 468
 469#define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \
 470    .name       = (stringify(_field)),                               \
 471    .num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \
 472    .version_id = (_version),                                        \
 473    .vmsd       = &(_vmsd),                                          \
 474    .size       = sizeof(_type),                                     \
 475    .flags      = VMS_STRUCT|VMS_VARRAY_UINT8,                       \
 476    .offset     = offsetof(_state, _field),                          \
 477}
 478
 479/* a variable length array (i.e. _type *_field) but we know the
 480 * length
 481 */
 482#define VMSTATE_STRUCT_VARRAY_POINTER_KNOWN(_field, _state, _num, _version, _vmsd, _type) { \
 483    .name       = (stringify(_field)),                               \
 484    .num          = (_num),                                          \
 485    .version_id = (_version),                                        \
 486    .vmsd       = &(_vmsd),                                          \
 487    .size       = sizeof(_type),                                     \
 488    .flags      = VMS_STRUCT|VMS_ARRAY|VMS_POINTER,                  \
 489    .offset     = offsetof(_state, _field),                          \
 490}
 491
 492#define VMSTATE_STRUCT_VARRAY_POINTER_INT32(_field, _state, _field_num, _vmsd, _type) { \
 493    .name       = (stringify(_field)),                               \
 494    .version_id = 0,                                                 \
 495    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 496    .size       = sizeof(_type),                                     \
 497    .vmsd       = &(_vmsd),                                          \
 498    .flags      = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT,       \
 499    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 500}
 501
 502#define VMSTATE_STRUCT_VARRAY_POINTER_UINT32(_field, _state, _field_num, _vmsd, _type) { \
 503    .name       = (stringify(_field)),                               \
 504    .version_id = 0,                                                 \
 505    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
 506    .size       = sizeof(_type),                                     \
 507    .vmsd       = &(_vmsd),                                          \
 508    .flags      = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT,       \
 509    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 510}
 511
 512#define VMSTATE_STRUCT_VARRAY_POINTER_UINT16(_field, _state, _field_num, _vmsd, _type) { \
 513    .name       = (stringify(_field)),                               \
 514    .version_id = 0,                                                 \
 515    .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
 516    .size       = sizeof(_type),                                     \
 517    .vmsd       = &(_vmsd),                                          \
 518    .flags      = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT,      \
 519    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 520}
 521
 522#define VMSTATE_STRUCT_VARRAY_INT32(_field, _state, _field_num, _version, _vmsd, _type) { \
 523    .name       = (stringify(_field)),                               \
 524    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 525    .version_id = (_version),                                        \
 526    .vmsd       = &(_vmsd),                                          \
 527    .size       = sizeof(_type),                                     \
 528    .flags      = VMS_STRUCT|VMS_VARRAY_INT32,                       \
 529    .offset     = offsetof(_state, _field),                          \
 530}
 531
 532#define VMSTATE_STRUCT_VARRAY_UINT32(_field, _state, _field_num, _version, _vmsd, _type) { \
 533    .name       = (stringify(_field)),                               \
 534    .num_offset = vmstate_offset_value(_state, _field_num, uint32_t), \
 535    .version_id = (_version),                                        \
 536    .vmsd       = &(_vmsd),                                          \
 537    .size       = sizeof(_type),                                     \
 538    .flags      = VMS_STRUCT|VMS_VARRAY_UINT32,                      \
 539    .offset     = offsetof(_state, _field),                          \
 540}
 541
 542#define VMSTATE_STRUCT_VARRAY_ALLOC(_field, _state, _field_num, _version, _vmsd, _type) {\
 543    .name       = (stringify(_field)),                               \
 544    .version_id = (_version),                                        \
 545    .vmsd       = &(_vmsd),                                          \
 546    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
 547    .size       = sizeof(_type),                                     \
 548    .flags      = VMS_STRUCT|VMS_VARRAY_INT32|VMS_ALLOC|VMS_POINTER, \
 549    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
 550}
 551
 552#define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
 553    .name         = (stringify(_field)),                             \
 554    .version_id   = (_version),                                      \
 555    .field_exists = (_test),                                         \
 556    .size         = (_size - _start),                                \
 557    .info         = &vmstate_info_buffer,                            \
 558    .flags        = VMS_BUFFER,                                      \
 559    .offset       = vmstate_offset_buffer(_state, _field) + _start,  \
 560}
 561
 562#define VMSTATE_VBUFFER_MULTIPLY(_field, _state, _version, _test, _start, _field_size, _multiply) { \
 563    .name         = (stringify(_field)),                             \
 564    .version_id   = (_version),                                      \
 565    .field_exists = (_test),                                         \
 566    .size_offset  = vmstate_offset_value(_state, _field_size, uint32_t),\
 567    .size         = (_multiply),                                      \
 568    .info         = &vmstate_info_buffer,                            \
 569    .flags        = VMS_VBUFFER|VMS_POINTER|VMS_MULTIPLY,            \
 570    .offset       = offsetof(_state, _field),                        \
 571    .start        = (_start),                                        \
 572}
 573
 574#define VMSTATE_VBUFFER(_field, _state, _version, _test, _start, _field_size) { \
 575    .name         = (stringify(_field)),                             \
 576    .version_id   = (_version),                                      \
 577    .field_exists = (_test),                                         \
 578    .size_offset  = vmstate_offset_value(_state, _field_size, int32_t),\
 579    .info         = &vmstate_info_buffer,                            \
 580    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
 581    .offset       = offsetof(_state, _field),                        \
 582    .start        = (_start),                                        \
 583}
 584
 585#define VMSTATE_VBUFFER_UINT32(_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, uint32_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_ALLOC_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|VMS_ALLOC,               \
 603    .offset       = offsetof(_state, _field),                        \
 604    .start        = (_start),                                        \
 605}
 606
 607#define VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, _test, _version, _info, _size) { \
 608    .name       = (stringify(_field)),                               \
 609    .version_id = (_version),                                        \
 610    .field_exists = (_test),                                         \
 611    .size       = (_size),                                           \
 612    .info       = &(_info),                                          \
 613    .flags      = VMS_BUFFER,                                        \
 614    .offset     = offsetof(_state, _field),                          \
 615}
 616
 617#define VMSTATE_BUFFER_POINTER_UNSAFE(_field, _state, _version, _size) { \
 618    .name       = (stringify(_field)),                               \
 619    .version_id = (_version),                                        \
 620    .size       = (_size),                                           \
 621    .info       = &vmstate_info_buffer,                              \
 622    .flags      = VMS_BUFFER|VMS_POINTER,                            \
 623    .offset     = offsetof(_state, _field),                          \
 624}
 625
 626#define VMSTATE_UNUSED_BUFFER(_test, _version, _size) {              \
 627    .name         = "unused",                                        \
 628    .field_exists = (_test),                                         \
 629    .version_id   = (_version),                                      \
 630    .size         = (_size),                                         \
 631    .info         = &vmstate_info_unused_buffer,                     \
 632    .flags        = VMS_BUFFER,                                      \
 633}
 634
 635/* _field_size should be a int32_t field in the _state struct giving the
 636 * size of the bitmap _field in bits.
 637 */
 638#define VMSTATE_BITMAP(_field, _state, _version, _field_size) {      \
 639    .name         = (stringify(_field)),                             \
 640    .version_id   = (_version),                                      \
 641    .size_offset  = vmstate_offset_value(_state, _field_size, int32_t),\
 642    .info         = &vmstate_info_bitmap,                            \
 643    .flags        = VMS_VBUFFER|VMS_POINTER,                         \
 644    .offset       = offsetof(_state, _field),                        \
 645}
 646
 647/* _f : field name
 648   _f_n : num of elements field_name
 649   _n : num of elements
 650   _s : struct state name
 651   _v : version
 652*/
 653
 654#define VMSTATE_SINGLE(_field, _state, _version, _info, _type)        \
 655    VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type)
 656
 657#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type)        \
 658    VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type)
 659
 660#define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type)          \
 661    VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type)
 662
 663#define VMSTATE_STRUCT_POINTER_TEST(_field, _state, _test, _vmsd, _type)     \
 664    VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, 0, _vmsd, _type)
 665
 666#define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \
 667    VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version,   \
 668            _vmsd, _type)
 669
 670#define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) \
 671    VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, NULL, _version, _info, \
 672            _size)
 673
 674#define VMSTATE_BOOL_V(_f, _s, _v)                                    \
 675    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_bool, bool)
 676
 677#define VMSTATE_INT8_V(_f, _s, _v)                                    \
 678    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t)
 679#define VMSTATE_INT16_V(_f, _s, _v)                                   \
 680    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t)
 681#define VMSTATE_INT32_V(_f, _s, _v)                                   \
 682    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t)
 683#define VMSTATE_INT64_V(_f, _s, _v)                                   \
 684    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t)
 685
 686#define VMSTATE_UINT8_V(_f, _s, _v)                                   \
 687    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t)
 688#define VMSTATE_UINT16_V(_f, _s, _v)                                  \
 689    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t)
 690#define VMSTATE_UINT32_V(_f, _s, _v)                                  \
 691    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t)
 692#define VMSTATE_UINT64_V(_f, _s, _v)                                  \
 693    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t)
 694
 695#define VMSTATE_BOOL(_f, _s)                                          \
 696    VMSTATE_BOOL_V(_f, _s, 0)
 697
 698#define VMSTATE_INT8(_f, _s)                                          \
 699    VMSTATE_INT8_V(_f, _s, 0)
 700#define VMSTATE_INT16(_f, _s)                                         \
 701    VMSTATE_INT16_V(_f, _s, 0)
 702#define VMSTATE_INT32(_f, _s)                                         \
 703    VMSTATE_INT32_V(_f, _s, 0)
 704#define VMSTATE_INT64(_f, _s)                                         \
 705    VMSTATE_INT64_V(_f, _s, 0)
 706
 707#define VMSTATE_UINT8(_f, _s)                                         \
 708    VMSTATE_UINT8_V(_f, _s, 0)
 709#define VMSTATE_UINT16(_f, _s)                                        \
 710    VMSTATE_UINT16_V(_f, _s, 0)
 711#define VMSTATE_UINT32(_f, _s)                                        \
 712    VMSTATE_UINT32_V(_f, _s, 0)
 713#define VMSTATE_UINT64(_f, _s)                                        \
 714    VMSTATE_UINT64_V(_f, _s, 0)
 715
 716#define VMSTATE_UINT8_EQUAL(_f, _s)                                   \
 717    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint8_equal, uint8_t)
 718
 719#define VMSTATE_UINT16_EQUAL(_f, _s)                                  \
 720    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint16_equal, uint16_t)
 721
 722#define VMSTATE_UINT16_EQUAL_V(_f, _s, _v)                            \
 723    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16_equal, uint16_t)
 724
 725#define VMSTATE_INT32_EQUAL(_f, _s)                                   \
 726    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_equal, int32_t)
 727
 728#define VMSTATE_UINT32_EQUAL_V(_f, _s, _v)                            \
 729    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32_equal, uint32_t)
 730
 731#define VMSTATE_UINT32_EQUAL(_f, _s)                                  \
 732    VMSTATE_UINT32_EQUAL_V(_f, _s, 0)
 733
 734#define VMSTATE_UINT64_EQUAL_V(_f, _s, _v)                            \
 735    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64_equal, uint64_t)
 736
 737#define VMSTATE_UINT64_EQUAL(_f, _s)                                  \
 738    VMSTATE_UINT64_EQUAL_V(_f, _s, 0)
 739
 740#define VMSTATE_INT32_POSITIVE_LE(_f, _s)                             \
 741    VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
 742
 743#define VMSTATE_INT8_TEST(_f, _s, _t)                               \
 744    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int8, int8_t)
 745
 746#define VMSTATE_INT16_TEST(_f, _s, _t)                               \
 747    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int16, int16_t)
 748
 749#define VMSTATE_INT32_TEST(_f, _s, _t)                                  \
 750    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int32, int32_t)
 751
 752#define VMSTATE_INT64_TEST(_f, _s, _t)                                  \
 753    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int64, int64_t)
 754
 755#define VMSTATE_UINT8_TEST(_f, _s, _t)                               \
 756    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t)
 757
 758#define VMSTATE_UINT16_TEST(_f, _s, _t)                               \
 759    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t)
 760
 761#define VMSTATE_UINT32_TEST(_f, _s, _t)                                  \
 762    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint32, uint32_t)
 763
 764#define VMSTATE_UINT64_TEST(_f, _s, _t)                                  \
 765    VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint64, uint64_t)
 766
 767
 768#define VMSTATE_FLOAT64_V(_f, _s, _v)                                 \
 769    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_float64, float64)
 770
 771#define VMSTATE_FLOAT64(_f, _s)                                       \
 772    VMSTATE_FLOAT64_V(_f, _s, 0)
 773
 774#define VMSTATE_TIMER_PTR_TEST(_f, _s, _test)                             \
 775    VMSTATE_POINTER_TEST(_f, _s, _test, vmstate_info_timer, QEMUTimer *)
 776
 777#define VMSTATE_TIMER_PTR_V(_f, _s, _v)                                   \
 778    VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *)
 779
 780#define VMSTATE_TIMER_PTR(_f, _s)                                         \
 781    VMSTATE_TIMER_PTR_V(_f, _s, 0)
 782
 783#define VMSTATE_TIMER_PTR_ARRAY(_f, _s, _n)                              \
 784    VMSTATE_ARRAY_OF_POINTER(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer *)
 785
 786#define VMSTATE_TIMER_TEST(_f, _s, _test)                             \
 787    VMSTATE_SINGLE_TEST(_f, _s, _test, 0, vmstate_info_timer, QEMUTimer)
 788
 789#define VMSTATE_TIMER_V(_f, _s, _v)                                   \
 790    VMSTATE_SINGLE(_f, _s, _v, vmstate_info_timer, QEMUTimer)
 791
 792#define VMSTATE_TIMER(_f, _s)                                         \
 793    VMSTATE_TIMER_V(_f, _s, 0)
 794
 795#define VMSTATE_TIMER_ARRAY(_f, _s, _n)                              \
 796    VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer)
 797
 798#define VMSTATE_BOOL_ARRAY_V(_f, _s, _n, _v)                         \
 799    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_bool, bool)
 800
 801#define VMSTATE_BOOL_ARRAY(_f, _s, _n)                               \
 802    VMSTATE_BOOL_ARRAY_V(_f, _s, _n, 0)
 803
 804#define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v)                         \
 805    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t)
 806
 807#define VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, _v)                \
 808    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint16, uint16_t)
 809
 810#define VMSTATE_UINT16_ARRAY(_f, _s, _n)                               \
 811    VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0)
 812
 813#define VMSTATE_UINT16_2DARRAY(_f, _s, _n1, _n2)                      \
 814    VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, 0)
 815
 816#define VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, _v)                 \
 817    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint8, uint8_t)
 818
 819#define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v)                         \
 820    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t)
 821
 822#define VMSTATE_UINT8_ARRAY(_f, _s, _n)                               \
 823    VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0)
 824
 825#define VMSTATE_UINT8_SUB_ARRAY(_f, _s, _start, _num)                \
 826    VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint8, uint8_t)
 827
 828#define VMSTATE_UINT8_2DARRAY(_f, _s, _n1, _n2)                       \
 829    VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, 0)
 830
 831#define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v)                        \
 832    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)
 833
 834#define VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, _v)                \
 835    VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint32, uint32_t)
 836
 837#define VMSTATE_UINT32_ARRAY(_f, _s, _n)                              \
 838    VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
 839
 840#define VMSTATE_UINT32_2DARRAY(_f, _s, _n1, _n2)                      \
 841    VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, 0)
 842
 843#define VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v)                        \
 844    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint64, uint64_t)
 845
 846#define VMSTATE_UINT64_ARRAY(_f, _s, _n)                              \
 847    VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0)
 848
 849#define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v)                         \
 850    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int16, int16_t)
 851
 852#define VMSTATE_INT16_ARRAY(_f, _s, _n)                               \
 853    VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0)
 854
 855#define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v)                         \
 856    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t)
 857
 858#define VMSTATE_INT32_ARRAY(_f, _s, _n)                               \
 859    VMSTATE_INT32_ARRAY_V(_f, _s, _n, 0)
 860
 861#define VMSTATE_UINT32_SUB_ARRAY(_f, _s, _start, _num)                \
 862    VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint32, uint32_t)
 863
 864#define VMSTATE_INT64_ARRAY_V(_f, _s, _n, _v)                         \
 865    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int64, int64_t)
 866
 867#define VMSTATE_INT64_ARRAY(_f, _s, _n)                               \
 868    VMSTATE_INT64_ARRAY_V(_f, _s, _n, 0)
 869
 870#define VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, _v)                       \
 871    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_float64, float64)
 872
 873#define VMSTATE_FLOAT64_ARRAY(_f, _s, _n)                             \
 874    VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, 0)
 875
 876#define VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, _v)                     \
 877    VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_cpudouble, CPU_DoubleU)
 878
 879#define VMSTATE_CPUDOUBLE_ARRAY(_f, _s, _n)                           \
 880    VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, 0)
 881
 882#define VMSTATE_BUFFER_V(_f, _s, _v)                                  \
 883    VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))
 884
 885#define VMSTATE_BUFFER(_f, _s)                                        \
 886    VMSTATE_BUFFER_V(_f, _s, 0)
 887
 888#define VMSTATE_PARTIAL_BUFFER(_f, _s, _size)                         \
 889    VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size)
 890
 891#define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \
 892    VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, _start, sizeof(typeof_field(_s, _f)))
 893
 894#define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size)                        \
 895    VMSTATE_VBUFFER(_f, _s, 0, NULL, 0, _size)
 896
 897#define VMSTATE_PARTIAL_VBUFFER_UINT32(_f, _s, _size)                        \
 898    VMSTATE_VBUFFER_UINT32(_f, _s, 0, NULL, 0, _size)
 899
 900#define VMSTATE_SUB_VBUFFER(_f, _s, _start, _size)                    \
 901    VMSTATE_VBUFFER(_f, _s, 0, NULL, _start, _size)
 902
 903#define VMSTATE_BUFFER_TEST(_f, _s, _test)                            \
 904    VMSTATE_STATIC_BUFFER(_f, _s, 0, _test, 0, sizeof(typeof_field(_s, _f)))
 905
 906#define VMSTATE_BUFFER_UNSAFE(_field, _state, _version, _size)        \
 907    VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, vmstate_info_buffer, _size)
 908
 909#define VMSTATE_UNUSED_V(_v, _size)                                   \
 910    VMSTATE_UNUSED_BUFFER(NULL, _v, _size)
 911
 912#define VMSTATE_UNUSED(_size)                                         \
 913    VMSTATE_UNUSED_V(0, _size)
 914
 915#define VMSTATE_UNUSED_TEST(_test, _size)                             \
 916    VMSTATE_UNUSED_BUFFER(_test, 0, _size)
 917
 918#define VMSTATE_END_OF_LIST()                                         \
 919    {}
 920
 921#define SELF_ANNOUNCE_ROUNDS 5
 922
 923void loadvm_free_handlers(MigrationIncomingState *mis);
 924
 925int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
 926                       void *opaque, int version_id);
 927void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
 928                        void *opaque, QJSON *vmdesc);
 929
 930bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque);
 931
 932int vmstate_register_with_alias_id(DeviceState *dev, int instance_id,
 933                                   const VMStateDescription *vmsd,
 934                                   void *base, int alias_id,
 935                                   int required_for_version);
 936
 937static inline int vmstate_register(DeviceState *dev, int instance_id,
 938                                   const VMStateDescription *vmsd,
 939                                   void *opaque)
 940{
 941    return vmstate_register_with_alias_id(dev, instance_id, vmsd,
 942                                          opaque, -1, 0);
 943}
 944
 945void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
 946                        void *opaque);
 947
 948struct MemoryRegion;
 949void vmstate_register_ram(struct MemoryRegion *memory, DeviceState *dev);
 950void vmstate_unregister_ram(struct MemoryRegion *memory, DeviceState *dev);
 951void vmstate_register_ram_global(struct MemoryRegion *memory);
 952
 953static inline
 954int64_t self_announce_delay(int round)
 955{
 956    assert(round < SELF_ANNOUNCE_ROUNDS && round > 0);
 957    /* delay 50ms, 150ms, 250ms, ... */
 958    return 50 + (SELF_ANNOUNCE_ROUNDS - round - 1) * 100;
 959}
 960
 961void dump_vmstate_json_to_file(FILE *out_fp);
 962
 963#endif
 964