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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 #include "migration/qjson.h"
31
32 typedef struct VMStateInfo VMStateInfo;
33 typedef struct VMStateDescription VMStateDescription;
34 typedef struct VMStateField VMStateField;
35
36 /* VMStateInfo allows customized migration of objects that don't fit in
37 * any category in VMStateFlags. Additional information is always passed
38 * into get and put in terms of field and vmdesc parameters. However
39 * these two parameters should only be used in cases when customized
40 * handling is needed, such as QTAILQ. For primitive data types such as
41 * integer, field and vmdesc parameters should be ignored inside get/put.
42 */
43 struct VMStateInfo {
44 const char *name;
45 int (*get)(QEMUFile *f, void *pv, size_t size, VMStateField *field);
46 int (*put)(QEMUFile *f, void *pv, size_t size, VMStateField *field,
47 QJSON *vmdesc);
48 };
49
50 enum VMStateFlags {
51 /* Ignored */
52 VMS_SINGLE = 0x001,
53
54 /* The struct member at opaque + VMStateField.offset is a pointer
55 * to the actual field (e.g. struct a { uint8_t *b;
56 * }). Dereference the pointer before using it as basis for
57 * further pointer arithmetic (see e.g. VMS_ARRAY). Does not
58 * affect the meaning of VMStateField.num_offset or
59 * VMStateField.size_offset; see VMS_VARRAY* and VMS_VBUFFER for
60 * those. */
61 VMS_POINTER = 0x002,
62
63 /* The field is an array of fixed size. VMStateField.num contains
64 * the number of entries in the array. The size of each entry is
65 * given by VMStateField.size and / or opaque +
66 * VMStateField.size_offset; see VMS_VBUFFER and
67 * VMS_MULTIPLY. Each array entry will be processed individually
68 * (VMStateField.info.get()/put() if VMS_STRUCT is not set,
69 * recursion into VMStateField.vmsd if VMS_STRUCT is set). May not
70 * be combined with VMS_VARRAY*. */
71 VMS_ARRAY = 0x004,
72
73 /* The field is itself a struct, containing one or more
74 * fields. Recurse into VMStateField.vmsd. Most useful in
75 * combination with VMS_ARRAY / VMS_VARRAY*, recursing into each
76 * array entry. */
77 VMS_STRUCT = 0x008,
78
79 /* The field is an array of variable size. The int32_t at opaque +
80 * VMStateField.num_offset contains the number of entries in the
81 * array. See the VMS_ARRAY description regarding array handling
82 * in general. May not be combined with VMS_ARRAY or any other
83 * VMS_VARRAY*. */
84 VMS_VARRAY_INT32 = 0x010,
85
86 /* Ignored */
87 VMS_BUFFER = 0x020,
88
89 /* The field is a (fixed-size or variable-size) array of pointers
90 * (e.g. struct a { uint8_t *b[]; }). Dereference each array entry
91 * before using it. Note: Does not imply any one of VMS_ARRAY /
92 * VMS_VARRAY*; these need to be set explicitly. */
93 VMS_ARRAY_OF_POINTER = 0x040,
94
95 /* The field is an array of variable size. The uint16_t at opaque
96 * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
97 * contains the number of entries in the array. See the VMS_ARRAY
98 * description regarding array handling in general. May not be
99 * combined with VMS_ARRAY or any other VMS_VARRAY*. */
100 VMS_VARRAY_UINT16 = 0x080,
101
102 /* The size of the individual entries (a single array entry if
103 * VMS_ARRAY or any of VMS_VARRAY* are set, or the field itself if
104 * neither is set) is variable (i.e. not known at compile-time),
105 * but the same for all entries. Use the int32_t at opaque +
106 * VMStateField.size_offset (subject to VMS_MULTIPLY) to determine
107 * the size of each (and every) entry. */
108 VMS_VBUFFER = 0x100,
109
110 /* Multiply the entry size given by the int32_t at opaque +
111 * VMStateField.size_offset (see VMS_VBUFFER description) with
112 * VMStateField.size to determine the number of bytes to be
113 * allocated. Only valid in combination with VMS_VBUFFER. */
114 VMS_MULTIPLY = 0x200,
115
116 /* The field is an array of variable size. The uint8_t at opaque +
117 * VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
118 * contains the number of entries in the array. See the VMS_ARRAY
119 * description regarding array handling in general. May not be
120 * combined with VMS_ARRAY or any other VMS_VARRAY*. */
121 VMS_VARRAY_UINT8 = 0x400,
122
123 /* The field is an array of variable size. The uint32_t at opaque
124 * + VMStateField.num_offset (subject to VMS_MULTIPLY_ELEMENTS)
125 * contains the number of entries in the array. See the VMS_ARRAY
126 * description regarding array handling in general. May not be
127 * combined with VMS_ARRAY or any other VMS_VARRAY*. */
128 VMS_VARRAY_UINT32 = 0x800,
129
130 /* Fail loading the serialised VM state if this field is missing
131 * from the input. */
132 VMS_MUST_EXIST = 0x1000,
133
134 /* When loading serialised VM state, allocate memory for the
135 * (entire) field. Only valid in combination with
136 * VMS_POINTER. Note: Not all combinations with other flags are
137 * currently supported, e.g. VMS_ALLOC|VMS_ARRAY_OF_POINTER won't
138 * cause the individual entries to be allocated. */
139 VMS_ALLOC = 0x2000,
140
141 /* Multiply the number of entries given by the integer at opaque +
142 * VMStateField.num_offset (see VMS_VARRAY*) with VMStateField.num
143 * to determine the number of entries in the array. Only valid in
144 * combination with one of VMS_VARRAY*. */
145 VMS_MULTIPLY_ELEMENTS = 0x4000,
146 };
147
148 typedef enum {
149 MIG_PRI_DEFAULT = 0,
150 MIG_PRI_IOMMU, /* Must happen before PCI devices */
151 MIG_PRI_GICV3_ITS, /* Must happen before PCI devices */
152 MIG_PRI_GICV3, /* Must happen before the ITS */
153 MIG_PRI_MAX,
154 } MigrationPriority;
155
156 struct VMStateField {
157 const char *name;
158 size_t offset;
159 size_t size;
160 size_t start;
161 int num;
162 size_t num_offset;
163 size_t size_offset;
164 const VMStateInfo *info;
165 enum VMStateFlags flags;
166 const VMStateDescription *vmsd;
167 int version_id;
168 bool (*field_exists)(void *opaque, int version_id);
169 };
170
171 struct VMStateDescription {
172 const char *name;
173 int unmigratable;
174 int version_id;
175 int minimum_version_id;
176 int minimum_version_id_old;
177 MigrationPriority priority;
178 LoadStateHandler *load_state_old;
179 int (*pre_load)(void *opaque);
180 int (*post_load)(void *opaque, int version_id);
181 void (*pre_save)(void *opaque);
182 bool (*needed)(void *opaque);
183 VMStateField *fields;
184 const VMStateDescription **subsections;
185 };
186
187 extern const VMStateDescription vmstate_dummy;
188
189 extern const VMStateInfo vmstate_info_bool;
190
191 extern const VMStateInfo vmstate_info_int8;
192 extern const VMStateInfo vmstate_info_int16;
193 extern const VMStateInfo vmstate_info_int32;
194 extern const VMStateInfo vmstate_info_int64;
195
196 extern const VMStateInfo vmstate_info_uint8_equal;
197 extern const VMStateInfo vmstate_info_uint16_equal;
198 extern const VMStateInfo vmstate_info_int32_equal;
199 extern const VMStateInfo vmstate_info_uint32_equal;
200 extern const VMStateInfo vmstate_info_uint64_equal;
201 extern const VMStateInfo vmstate_info_int32_le;
202
203 extern const VMStateInfo vmstate_info_uint8;
204 extern const VMStateInfo vmstate_info_uint16;
205 extern const VMStateInfo vmstate_info_uint32;
206 extern const VMStateInfo vmstate_info_uint64;
207
208 /** Put this in the stream when migrating a null pointer.*/
209 #define VMS_NULLPTR_MARKER (0x30U) /* '0' */
210 extern const VMStateInfo vmstate_info_nullptr;
211
212 extern const VMStateInfo vmstate_info_float64;
213 extern const VMStateInfo vmstate_info_cpudouble;
214
215 extern const VMStateInfo vmstate_info_timer;
216 extern const VMStateInfo vmstate_info_buffer;
217 extern const VMStateInfo vmstate_info_unused_buffer;
218 extern const VMStateInfo vmstate_info_tmp;
219 extern const VMStateInfo vmstate_info_bitmap;
220 extern const VMStateInfo vmstate_info_qtailq;
221
222 #define type_check_2darray(t1,t2,n,m) ((t1(*)[n][m])0 - (t2*)0)
223 #define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
224 #define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
225
226 #define vmstate_offset_value(_state, _field, _type) \
227 (offsetof(_state, _field) + \
228 type_check(_type, typeof_field(_state, _field)))
229
230 #define vmstate_offset_pointer(_state, _field, _type) \
231 (offsetof(_state, _field) + \
232 type_check_pointer(_type, typeof_field(_state, _field)))
233
234 #define vmstate_offset_array(_state, _field, _type, _num) \
235 (offsetof(_state, _field) + \
236 type_check_array(_type, typeof_field(_state, _field), _num))
237
238 #define vmstate_offset_2darray(_state, _field, _type, _n1, _n2) \
239 (offsetof(_state, _field) + \
240 type_check_2darray(_type, typeof_field(_state, _field), _n1, _n2))
241
242 #define vmstate_offset_sub_array(_state, _field, _type, _start) \
243 vmstate_offset_value(_state, _field[_start], _type)
244
245 #define vmstate_offset_buffer(_state, _field) \
246 vmstate_offset_array(_state, _field, uint8_t, \
247 sizeof(typeof_field(_state, _field)))
248
249 #define VMSTATE_SINGLE_TEST(_field, _state, _test, _version, _info, _type) { \
250 .name = (stringify(_field)), \
251 .version_id = (_version), \
252 .field_exists = (_test), \
253 .size = sizeof(_type), \
254 .info = &(_info), \
255 .flags = VMS_SINGLE, \
256 .offset = vmstate_offset_value(_state, _field, _type), \
257 }
258
259 /* Validate state using a boolean predicate. */
260 #define VMSTATE_VALIDATE(_name, _test) { \
261 .name = (_name), \
262 .field_exists = (_test), \
263 .flags = VMS_ARRAY | VMS_MUST_EXIST, \
264 .num = 0, /* 0 elements: no data, only run _test */ \
265 }
266
267 #define VMSTATE_POINTER(_field, _state, _version, _info, _type) { \
268 .name = (stringify(_field)), \
269 .version_id = (_version), \
270 .info = &(_info), \
271 .size = sizeof(_type), \
272 .flags = VMS_SINGLE|VMS_POINTER, \
273 .offset = vmstate_offset_value(_state, _field, _type), \
274 }
275
276 #define VMSTATE_POINTER_TEST(_field, _state, _test, _info, _type) { \
277 .name = (stringify(_field)), \
278 .info = &(_info), \
279 .field_exists = (_test), \
280 .size = sizeof(_type), \
281 .flags = VMS_SINGLE|VMS_POINTER, \
282 .offset = vmstate_offset_value(_state, _field, _type), \
283 }
284
285 #define VMSTATE_ARRAY(_field, _state, _num, _version, _info, _type) {\
286 .name = (stringify(_field)), \
287 .version_id = (_version), \
288 .num = (_num), \
289 .info = &(_info), \
290 .size = sizeof(_type), \
291 .flags = VMS_ARRAY, \
292 .offset = vmstate_offset_array(_state, _field, _type, _num), \
293 }
294
295 #define VMSTATE_2DARRAY(_field, _state, _n1, _n2, _version, _info, _type) { \
296 .name = (stringify(_field)), \
297 .version_id = (_version), \
298 .num = (_n1) * (_n2), \
299 .info = &(_info), \
300 .size = sizeof(_type), \
301 .flags = VMS_ARRAY, \
302 .offset = vmstate_offset_2darray(_state, _field, _type, _n1, _n2), \
303 }
304
305 #define VMSTATE_VARRAY_MULTIPLY(_field, _state, _field_num, _multiply, _info, _type) { \
306 .name = (stringify(_field)), \
307 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
308 .num = (_multiply), \
309 .info = &(_info), \
310 .size = sizeof(_type), \
311 .flags = VMS_VARRAY_UINT32|VMS_MULTIPLY_ELEMENTS, \
312 .offset = offsetof(_state, _field), \
313 }
314
315 #define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
316 .name = (stringify(_field)), \
317 .field_exists = (_test), \
318 .num = (_num), \
319 .info = &(_info), \
320 .size = sizeof(_type), \
321 .flags = VMS_ARRAY, \
322 .offset = vmstate_offset_array(_state, _field, _type, _num),\
323 }
324
325 #define VMSTATE_SUB_ARRAY(_field, _state, _start, _num, _version, _info, _type) { \
326 .name = (stringify(_field)), \
327 .version_id = (_version), \
328 .num = (_num), \
329 .info = &(_info), \
330 .size = sizeof(_type), \
331 .flags = VMS_ARRAY, \
332 .offset = vmstate_offset_sub_array(_state, _field, _type, _start), \
333 }
334
335 #define VMSTATE_ARRAY_INT32_UNSAFE(_field, _state, _field_num, _info, _type) {\
336 .name = (stringify(_field)), \
337 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
338 .info = &(_info), \
339 .size = sizeof(_type), \
340 .flags = VMS_VARRAY_INT32, \
341 .offset = offsetof(_state, _field), \
342 }
343
344 #define VMSTATE_VARRAY_INT32(_field, _state, _field_num, _version, _info, _type) {\
345 .name = (stringify(_field)), \
346 .version_id = (_version), \
347 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
348 .info = &(_info), \
349 .size = sizeof(_type), \
350 .flags = VMS_VARRAY_INT32|VMS_POINTER, \
351 .offset = vmstate_offset_pointer(_state, _field, _type), \
352 }
353
354 #define VMSTATE_VARRAY_UINT32(_field, _state, _field_num, _version, _info, _type) {\
355 .name = (stringify(_field)), \
356 .version_id = (_version), \
357 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
358 .info = &(_info), \
359 .size = sizeof(_type), \
360 .flags = VMS_VARRAY_UINT32|VMS_POINTER, \
361 .offset = vmstate_offset_pointer(_state, _field, _type), \
362 }
363
364 #define VMSTATE_VARRAY_UINT32_ALLOC(_field, _state, _field_num, _version, _info, _type) {\
365 .name = (stringify(_field)), \
366 .version_id = (_version), \
367 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
368 .info = &(_info), \
369 .size = sizeof(_type), \
370 .flags = VMS_VARRAY_UINT32|VMS_POINTER|VMS_ALLOC, \
371 .offset = vmstate_offset_pointer(_state, _field, _type), \
372 }
373
374 #define VMSTATE_VARRAY_UINT16_UNSAFE(_field, _state, _field_num, _version, _info, _type) {\
375 .name = (stringify(_field)), \
376 .version_id = (_version), \
377 .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
378 .info = &(_info), \
379 .size = sizeof(_type), \
380 .flags = VMS_VARRAY_UINT16, \
381 .offset = offsetof(_state, _field), \
382 }
383
384 #define VMSTATE_STRUCT_TEST(_field, _state, _test, _version, _vmsd, _type) { \
385 .name = (stringify(_field)), \
386 .version_id = (_version), \
387 .field_exists = (_test), \
388 .vmsd = &(_vmsd), \
389 .size = sizeof(_type), \
390 .flags = VMS_STRUCT, \
391 .offset = vmstate_offset_value(_state, _field, _type), \
392 }
393
394 #define VMSTATE_STRUCT_POINTER_V(_field, _state, _version, _vmsd, _type) { \
395 .name = (stringify(_field)), \
396 .version_id = (_version), \
397 .vmsd = &(_vmsd), \
398 .size = sizeof(_type *), \
399 .flags = VMS_STRUCT|VMS_POINTER, \
400 .offset = vmstate_offset_pointer(_state, _field, _type), \
401 }
402
403 #define VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, _version, _vmsd, _type) { \
404 .name = (stringify(_field)), \
405 .version_id = (_version), \
406 .field_exists = (_test), \
407 .vmsd = &(_vmsd), \
408 .size = sizeof(_type *), \
409 .flags = VMS_STRUCT|VMS_POINTER, \
410 .offset = vmstate_offset_pointer(_state, _field, _type), \
411 }
412
413 #define VMSTATE_ARRAY_OF_POINTER(_field, _state, _num, _version, _info, _type) {\
414 .name = (stringify(_field)), \
415 .version_id = (_version), \
416 .num = (_num), \
417 .info = &(_info), \
418 .size = sizeof(_type), \
419 .flags = VMS_ARRAY|VMS_ARRAY_OF_POINTER, \
420 .offset = vmstate_offset_array(_state, _field, _type, _num), \
421 }
422
423 #define VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, _v, _vmsd, _type) { \
424 .name = (stringify(_f)), \
425 .version_id = (_v), \
426 .num = (_n), \
427 .vmsd = &(_vmsd), \
428 .size = sizeof(_type *), \
429 .flags = VMS_ARRAY|VMS_STRUCT|VMS_ARRAY_OF_POINTER, \
430 .offset = vmstate_offset_array(_s, _f, _type*, _n), \
431 }
432
433 #define VMSTATE_STRUCT_SUB_ARRAY(_field, _state, _start, _num, _version, _vmsd, _type) { \
434 .name = (stringify(_field)), \
435 .version_id = (_version), \
436 .num = (_num), \
437 .vmsd = &(_vmsd), \
438 .size = sizeof(_type), \
439 .flags = VMS_STRUCT|VMS_ARRAY, \
440 .offset = vmstate_offset_sub_array(_state, _field, _type, _start), \
441 }
442
443 #define VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, _test, _version, _vmsd, _type) { \
444 .name = (stringify(_field)), \
445 .num = (_num), \
446 .field_exists = (_test), \
447 .version_id = (_version), \
448 .vmsd = &(_vmsd), \
449 .size = sizeof(_type), \
450 .flags = VMS_STRUCT|VMS_ARRAY, \
451 .offset = vmstate_offset_array(_state, _field, _type, _num),\
452 }
453
454 #define VMSTATE_STRUCT_2DARRAY_TEST(_field, _state, _n1, _n2, _test, \
455 _version, _vmsd, _type) { \
456 .name = (stringify(_field)), \
457 .num = (_n1) * (_n2), \
458 .field_exists = (_test), \
459 .version_id = (_version), \
460 .vmsd = &(_vmsd), \
461 .size = sizeof(_type), \
462 .flags = VMS_STRUCT | VMS_ARRAY, \
463 .offset = vmstate_offset_2darray(_state, _field, _type, \
464 _n1, _n2), \
465 }
466
467 #define VMSTATE_STRUCT_VARRAY_UINT8(_field, _state, _field_num, _version, _vmsd, _type) { \
468 .name = (stringify(_field)), \
469 .num_offset = vmstate_offset_value(_state, _field_num, uint8_t), \
470 .version_id = (_version), \
471 .vmsd = &(_vmsd), \
472 .size = sizeof(_type), \
473 .flags = VMS_STRUCT|VMS_VARRAY_UINT8, \
474 .offset = offsetof(_state, _field), \
475 }
476
477 /* a variable length array (i.e. _type *_field) but we know the
478 * length
479 */
480 #define VMSTATE_STRUCT_VARRAY_POINTER_KNOWN(_field, _state, _num, _version, _vmsd, _type) { \
481 .name = (stringify(_field)), \
482 .num = (_num), \
483 .version_id = (_version), \
484 .vmsd = &(_vmsd), \
485 .size = sizeof(_type), \
486 .flags = VMS_STRUCT|VMS_ARRAY|VMS_POINTER, \
487 .offset = offsetof(_state, _field), \
488 }
489
490 #define VMSTATE_STRUCT_VARRAY_POINTER_INT32(_field, _state, _field_num, _vmsd, _type) { \
491 .name = (stringify(_field)), \
492 .version_id = 0, \
493 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
494 .size = sizeof(_type), \
495 .vmsd = &(_vmsd), \
496 .flags = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT, \
497 .offset = vmstate_offset_pointer(_state, _field, _type), \
498 }
499
500 #define VMSTATE_STRUCT_VARRAY_POINTER_UINT32(_field, _state, _field_num, _vmsd, _type) { \
501 .name = (stringify(_field)), \
502 .version_id = 0, \
503 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
504 .size = sizeof(_type), \
505 .vmsd = &(_vmsd), \
506 .flags = VMS_POINTER | VMS_VARRAY_INT32 | VMS_STRUCT, \
507 .offset = vmstate_offset_pointer(_state, _field, _type), \
508 }
509
510 #define VMSTATE_STRUCT_VARRAY_POINTER_UINT16(_field, _state, _field_num, _vmsd, _type) { \
511 .name = (stringify(_field)), \
512 .version_id = 0, \
513 .num_offset = vmstate_offset_value(_state, _field_num, uint16_t),\
514 .size = sizeof(_type), \
515 .vmsd = &(_vmsd), \
516 .flags = VMS_POINTER | VMS_VARRAY_UINT16 | VMS_STRUCT, \
517 .offset = vmstate_offset_pointer(_state, _field, _type), \
518 }
519
520 #define VMSTATE_STRUCT_VARRAY_INT32(_field, _state, _field_num, _version, _vmsd, _type) { \
521 .name = (stringify(_field)), \
522 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
523 .version_id = (_version), \
524 .vmsd = &(_vmsd), \
525 .size = sizeof(_type), \
526 .flags = VMS_STRUCT|VMS_VARRAY_INT32, \
527 .offset = offsetof(_state, _field), \
528 }
529
530 #define VMSTATE_STRUCT_VARRAY_UINT32(_field, _state, _field_num, _version, _vmsd, _type) { \
531 .name = (stringify(_field)), \
532 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t), \
533 .version_id = (_version), \
534 .vmsd = &(_vmsd), \
535 .size = sizeof(_type), \
536 .flags = VMS_STRUCT|VMS_VARRAY_UINT32, \
537 .offset = offsetof(_state, _field), \
538 }
539
540 #define VMSTATE_STRUCT_VARRAY_ALLOC(_field, _state, _field_num, _version, _vmsd, _type) {\
541 .name = (stringify(_field)), \
542 .version_id = (_version), \
543 .vmsd = &(_vmsd), \
544 .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
545 .size = sizeof(_type), \
546 .flags = VMS_STRUCT|VMS_VARRAY_INT32|VMS_ALLOC|VMS_POINTER, \
547 .offset = vmstate_offset_pointer(_state, _field, _type), \
548 }
549
550 #define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
551 .name = (stringify(_field)), \
552 .version_id = (_version), \
553 .field_exists = (_test), \
554 .size = (_size - _start), \
555 .info = &vmstate_info_buffer, \
556 .flags = VMS_BUFFER, \
557 .offset = vmstate_offset_buffer(_state, _field) + _start, \
558 }
559
560 #define VMSTATE_VBUFFER_MULTIPLY(_field, _state, _version, _test, \
561 _field_size, _multiply) { \
562 .name = (stringify(_field)), \
563 .version_id = (_version), \
564 .field_exists = (_test), \
565 .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
566 .size = (_multiply), \
567 .info = &vmstate_info_buffer, \
568 .flags = VMS_VBUFFER|VMS_POINTER|VMS_MULTIPLY, \
569 .offset = offsetof(_state, _field), \
570 }
571
572 #define VMSTATE_VBUFFER(_field, _state, _version, _test, _field_size) { \
573 .name = (stringify(_field)), \
574 .version_id = (_version), \
575 .field_exists = (_test), \
576 .size_offset = vmstate_offset_value(_state, _field_size, int32_t),\
577 .info = &vmstate_info_buffer, \
578 .flags = VMS_VBUFFER|VMS_POINTER, \
579 .offset = offsetof(_state, _field), \
580 }
581
582 #define VMSTATE_VBUFFER_UINT32(_field, _state, _version, _test, _field_size) { \
583 .name = (stringify(_field)), \
584 .version_id = (_version), \
585 .field_exists = (_test), \
586 .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
587 .info = &vmstate_info_buffer, \
588 .flags = VMS_VBUFFER|VMS_POINTER, \
589 .offset = offsetof(_state, _field), \
590 }
591
592 #define VMSTATE_VBUFFER_ALLOC_UINT32(_field, _state, _version, \
593 _test, _field_size) { \
594 .name = (stringify(_field)), \
595 .version_id = (_version), \
596 .field_exists = (_test), \
597 .size_offset = vmstate_offset_value(_state, _field_size, uint32_t),\
598 .info = &vmstate_info_buffer, \
599 .flags = VMS_VBUFFER|VMS_POINTER|VMS_ALLOC, \
600 .offset = offsetof(_state, _field), \
601 }
602
603 #define VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, _test, _version, _info, _size) { \
604 .name = (stringify(_field)), \
605 .version_id = (_version), \
606 .field_exists = (_test), \
607 .size = (_size), \
608 .info = &(_info), \
609 .flags = VMS_BUFFER, \
610 .offset = offsetof(_state, _field), \
611 }
612
613 #define VMSTATE_BUFFER_POINTER_UNSAFE(_field, _state, _version, _size) { \
614 .name = (stringify(_field)), \
615 .version_id = (_version), \
616 .size = (_size), \
617 .info = &vmstate_info_buffer, \
618 .flags = VMS_BUFFER|VMS_POINTER, \
619 .offset = offsetof(_state, _field), \
620 }
621
622 /* Allocate a temporary of type 'tmp_type', set tmp->parent to _state
623 * and execute the vmsd on the temporary. Note that we're working with
624 * the whole of _state here, not a field within it.
625 * We compile time check that:
626 * That _tmp_type contains a 'parent' member that's a pointer to the
627 * '_state' type
628 * That the pointer is right at the start of _tmp_type.
629 */
630 #define VMSTATE_WITH_TMP(_state, _tmp_type, _vmsd) { \
631 .name = "tmp", \
632 .size = sizeof(_tmp_type) + \
633 QEMU_BUILD_BUG_ON_ZERO(offsetof(_tmp_type, parent) != 0) + \
634 type_check_pointer(_state, \
635 typeof_field(_tmp_type, parent)), \
636 .vmsd = &(_vmsd), \
637 .info = &vmstate_info_tmp, \
638 }
639
640 #define VMSTATE_UNUSED_BUFFER(_test, _version, _size) { \
641 .name = "unused", \
642 .field_exists = (_test), \
643 .version_id = (_version), \
644 .size = (_size), \
645 .info = &vmstate_info_unused_buffer, \
646 .flags = VMS_BUFFER, \
647 }
648
649 /* Discard size * field_num bytes, where field_num is a uint32 member */
650 #define VMSTATE_UNUSED_VARRAY_UINT32(_state, _test, _version, _field_num, _size) {\
651 .name = "unused", \
652 .field_exists = (_test), \
653 .num_offset = vmstate_offset_value(_state, _field_num, uint32_t),\
654 .version_id = (_version), \
655 .size = (_size), \
656 .info = &vmstate_info_unused_buffer, \
657 .flags = VMS_VARRAY_UINT32 | VMS_BUFFER, \
658 }
659
660 /* _field_size should be a int32_t field in the _state struct giving the
661 * size of the bitmap _field in bits.
662 */
663 #define VMSTATE_BITMAP(_field, _state, _version, _field_size) { \
664 .name = (stringify(_field)), \
665 .version_id = (_version), \
666 .size_offset = vmstate_offset_value(_state, _field_size, int32_t),\
667 .info = &vmstate_info_bitmap, \
668 .flags = VMS_VBUFFER|VMS_POINTER, \
669 .offset = offsetof(_state, _field), \
670 }
671
672 /* For migrating a QTAILQ.
673 * Target QTAILQ needs be properly initialized.
674 * _type: type of QTAILQ element
675 * _next: name of QTAILQ entry field in QTAILQ element
676 * _vmsd: VMSD for QTAILQ element
677 * size: size of QTAILQ element
678 * start: offset of QTAILQ entry in QTAILQ element
679 */
680 #define VMSTATE_QTAILQ_V(_field, _state, _version, _vmsd, _type, _next) \
681 { \
682 .name = (stringify(_field)), \
683 .version_id = (_version), \
684 .vmsd = &(_vmsd), \
685 .size = sizeof(_type), \
686 .info = &vmstate_info_qtailq, \
687 .offset = offsetof(_state, _field), \
688 .start = offsetof(_type, _next), \
689 }
690
691 /* _f : field name
692 _f_n : num of elements field_name
693 _n : num of elements
694 _s : struct state name
695 _v : version
696 */
697
698 #define VMSTATE_SINGLE(_field, _state, _version, _info, _type) \
699 VMSTATE_SINGLE_TEST(_field, _state, NULL, _version, _info, _type)
700
701 #define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) \
702 VMSTATE_STRUCT_TEST(_field, _state, NULL, _version, _vmsd, _type)
703
704 #define VMSTATE_STRUCT_POINTER(_field, _state, _vmsd, _type) \
705 VMSTATE_STRUCT_POINTER_V(_field, _state, 0, _vmsd, _type)
706
707 #define VMSTATE_STRUCT_POINTER_TEST(_field, _state, _test, _vmsd, _type) \
708 VMSTATE_STRUCT_POINTER_TEST_V(_field, _state, _test, 0, _vmsd, _type)
709
710 #define VMSTATE_STRUCT_ARRAY(_field, _state, _num, _version, _vmsd, _type) \
711 VMSTATE_STRUCT_ARRAY_TEST(_field, _state, _num, NULL, _version, \
712 _vmsd, _type)
713
714 #define VMSTATE_STRUCT_2DARRAY(_field, _state, _n1, _n2, _version, \
715 _vmsd, _type) \
716 VMSTATE_STRUCT_2DARRAY_TEST(_field, _state, _n1, _n2, NULL, \
717 _version, _vmsd, _type)
718
719 #define VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, _info, _size) \
720 VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _state, NULL, _version, _info, \
721 _size)
722
723 #define VMSTATE_BOOL_V(_f, _s, _v) \
724 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_bool, bool)
725
726 #define VMSTATE_INT8_V(_f, _s, _v) \
727 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int8, int8_t)
728 #define VMSTATE_INT16_V(_f, _s, _v) \
729 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int16, int16_t)
730 #define VMSTATE_INT32_V(_f, _s, _v) \
731 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int32, int32_t)
732 #define VMSTATE_INT64_V(_f, _s, _v) \
733 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_int64, int64_t)
734
735 #define VMSTATE_UINT8_V(_f, _s, _v) \
736 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint8, uint8_t)
737 #define VMSTATE_UINT16_V(_f, _s, _v) \
738 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16, uint16_t)
739 #define VMSTATE_UINT32_V(_f, _s, _v) \
740 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32, uint32_t)
741 #define VMSTATE_UINT64_V(_f, _s, _v) \
742 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64, uint64_t)
743
744 #define VMSTATE_BOOL(_f, _s) \
745 VMSTATE_BOOL_V(_f, _s, 0)
746
747 #define VMSTATE_INT8(_f, _s) \
748 VMSTATE_INT8_V(_f, _s, 0)
749 #define VMSTATE_INT16(_f, _s) \
750 VMSTATE_INT16_V(_f, _s, 0)
751 #define VMSTATE_INT32(_f, _s) \
752 VMSTATE_INT32_V(_f, _s, 0)
753 #define VMSTATE_INT64(_f, _s) \
754 VMSTATE_INT64_V(_f, _s, 0)
755
756 #define VMSTATE_UINT8(_f, _s) \
757 VMSTATE_UINT8_V(_f, _s, 0)
758 #define VMSTATE_UINT16(_f, _s) \
759 VMSTATE_UINT16_V(_f, _s, 0)
760 #define VMSTATE_UINT32(_f, _s) \
761 VMSTATE_UINT32_V(_f, _s, 0)
762 #define VMSTATE_UINT64(_f, _s) \
763 VMSTATE_UINT64_V(_f, _s, 0)
764
765 #define VMSTATE_UINT8_EQUAL(_f, _s) \
766 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint8_equal, uint8_t)
767
768 #define VMSTATE_UINT16_EQUAL(_f, _s) \
769 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_uint16_equal, uint16_t)
770
771 #define VMSTATE_UINT16_EQUAL_V(_f, _s, _v) \
772 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint16_equal, uint16_t)
773
774 #define VMSTATE_INT32_EQUAL(_f, _s) \
775 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_equal, int32_t)
776
777 #define VMSTATE_UINT32_EQUAL_V(_f, _s, _v) \
778 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint32_equal, uint32_t)
779
780 #define VMSTATE_UINT32_EQUAL(_f, _s) \
781 VMSTATE_UINT32_EQUAL_V(_f, _s, 0)
782
783 #define VMSTATE_UINT64_EQUAL_V(_f, _s, _v) \
784 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_uint64_equal, uint64_t)
785
786 #define VMSTATE_UINT64_EQUAL(_f, _s) \
787 VMSTATE_UINT64_EQUAL_V(_f, _s, 0)
788
789 #define VMSTATE_INT32_POSITIVE_LE(_f, _s) \
790 VMSTATE_SINGLE(_f, _s, 0, vmstate_info_int32_le, int32_t)
791
792 #define VMSTATE_INT8_TEST(_f, _s, _t) \
793 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int8, int8_t)
794
795 #define VMSTATE_INT16_TEST(_f, _s, _t) \
796 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int16, int16_t)
797
798 #define VMSTATE_INT32_TEST(_f, _s, _t) \
799 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int32, int32_t)
800
801 #define VMSTATE_INT64_TEST(_f, _s, _t) \
802 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_int64, int64_t)
803
804 #define VMSTATE_UINT8_TEST(_f, _s, _t) \
805 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint8, uint8_t)
806
807 #define VMSTATE_UINT16_TEST(_f, _s, _t) \
808 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint16, uint16_t)
809
810 #define VMSTATE_UINT32_TEST(_f, _s, _t) \
811 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint32, uint32_t)
812
813 #define VMSTATE_UINT64_TEST(_f, _s, _t) \
814 VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_info_uint64, uint64_t)
815
816
817 #define VMSTATE_FLOAT64_V(_f, _s, _v) \
818 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_float64, float64)
819
820 #define VMSTATE_FLOAT64(_f, _s) \
821 VMSTATE_FLOAT64_V(_f, _s, 0)
822
823 #define VMSTATE_TIMER_PTR_TEST(_f, _s, _test) \
824 VMSTATE_POINTER_TEST(_f, _s, _test, vmstate_info_timer, QEMUTimer *)
825
826 #define VMSTATE_TIMER_PTR_V(_f, _s, _v) \
827 VMSTATE_POINTER(_f, _s, _v, vmstate_info_timer, QEMUTimer *)
828
829 #define VMSTATE_TIMER_PTR(_f, _s) \
830 VMSTATE_TIMER_PTR_V(_f, _s, 0)
831
832 #define VMSTATE_TIMER_PTR_ARRAY(_f, _s, _n) \
833 VMSTATE_ARRAY_OF_POINTER(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer *)
834
835 #define VMSTATE_TIMER_TEST(_f, _s, _test) \
836 VMSTATE_SINGLE_TEST(_f, _s, _test, 0, vmstate_info_timer, QEMUTimer)
837
838 #define VMSTATE_TIMER_V(_f, _s, _v) \
839 VMSTATE_SINGLE(_f, _s, _v, vmstate_info_timer, QEMUTimer)
840
841 #define VMSTATE_TIMER(_f, _s) \
842 VMSTATE_TIMER_V(_f, _s, 0)
843
844 #define VMSTATE_TIMER_ARRAY(_f, _s, _n) \
845 VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_timer, QEMUTimer)
846
847 #define VMSTATE_BOOL_ARRAY_V(_f, _s, _n, _v) \
848 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_bool, bool)
849
850 #define VMSTATE_BOOL_ARRAY(_f, _s, _n) \
851 VMSTATE_BOOL_ARRAY_V(_f, _s, _n, 0)
852
853 #define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v) \
854 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t)
855
856 #define VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, _v) \
857 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint16, uint16_t)
858
859 #define VMSTATE_UINT16_ARRAY(_f, _s, _n) \
860 VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0)
861
862 #define VMSTATE_UINT16_2DARRAY(_f, _s, _n1, _n2) \
863 VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, 0)
864
865 #define VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, _v) \
866 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint8, uint8_t)
867
868 #define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v) \
869 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t)
870
871 #define VMSTATE_UINT8_ARRAY(_f, _s, _n) \
872 VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0)
873
874 #define VMSTATE_UINT8_SUB_ARRAY(_f, _s, _start, _num) \
875 VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint8, uint8_t)
876
877 #define VMSTATE_UINT8_2DARRAY(_f, _s, _n1, _n2) \
878 VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, 0)
879
880 #define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v) \
881 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)
882
883 #define VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, _v) \
884 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint32, uint32_t)
885
886 #define VMSTATE_UINT32_ARRAY(_f, _s, _n) \
887 VMSTATE_UINT32_ARRAY_V(_f, _s, _n, 0)
888
889 #define VMSTATE_UINT32_2DARRAY(_f, _s, _n1, _n2) \
890 VMSTATE_UINT32_2DARRAY_V(_f, _s, _n1, _n2, 0)
891
892 #define VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v) \
893 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint64, uint64_t)
894
895 #define VMSTATE_UINT64_ARRAY(_f, _s, _n) \
896 VMSTATE_UINT64_ARRAY_V(_f, _s, _n, 0)
897
898 #define VMSTATE_UINT64_2DARRAY(_f, _s, _n1, _n2) \
899 VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, 0)
900
901 #define VMSTATE_UINT64_2DARRAY_V(_f, _s, _n1, _n2, _v) \
902 VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint64, uint64_t)
903
904 #define VMSTATE_INT16_ARRAY_V(_f, _s, _n, _v) \
905 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int16, int16_t)
906
907 #define VMSTATE_INT16_ARRAY(_f, _s, _n) \
908 VMSTATE_INT16_ARRAY_V(_f, _s, _n, 0)
909
910 #define VMSTATE_INT32_ARRAY_V(_f, _s, _n, _v) \
911 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int32, int32_t)
912
913 #define VMSTATE_INT32_ARRAY(_f, _s, _n) \
914 VMSTATE_INT32_ARRAY_V(_f, _s, _n, 0)
915
916 #define VMSTATE_UINT32_SUB_ARRAY(_f, _s, _start, _num) \
917 VMSTATE_SUB_ARRAY(_f, _s, _start, _num, 0, vmstate_info_uint32, uint32_t)
918
919 #define VMSTATE_INT64_ARRAY_V(_f, _s, _n, _v) \
920 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_int64, int64_t)
921
922 #define VMSTATE_INT64_ARRAY(_f, _s, _n) \
923 VMSTATE_INT64_ARRAY_V(_f, _s, _n, 0)
924
925 #define VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, _v) \
926 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_float64, float64)
927
928 #define VMSTATE_FLOAT64_ARRAY(_f, _s, _n) \
929 VMSTATE_FLOAT64_ARRAY_V(_f, _s, _n, 0)
930
931 #define VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, _v) \
932 VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_cpudouble, CPU_DoubleU)
933
934 #define VMSTATE_CPUDOUBLE_ARRAY(_f, _s, _n) \
935 VMSTATE_CPUDOUBLE_ARRAY_V(_f, _s, _n, 0)
936
937 #define VMSTATE_BUFFER_V(_f, _s, _v) \
938 VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))
939
940 #define VMSTATE_BUFFER(_f, _s) \
941 VMSTATE_BUFFER_V(_f, _s, 0)
942
943 #define VMSTATE_PARTIAL_BUFFER(_f, _s, _size) \
944 VMSTATE_STATIC_BUFFER(_f, _s, 0, NULL, 0, _size)
945
946 #define VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, _v) \
947 VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, _start, sizeof(typeof_field(_s, _f)))
948
949 #define VMSTATE_BUFFER_START_MIDDLE(_f, _s, _start) \
950 VMSTATE_BUFFER_START_MIDDLE_V(_f, _s, _start, 0)
951
952 #define VMSTATE_PARTIAL_VBUFFER(_f, _s, _size) \
953 VMSTATE_VBUFFER(_f, _s, 0, NULL, _size)
954
955 #define VMSTATE_PARTIAL_VBUFFER_UINT32(_f, _s, _size) \
956 VMSTATE_VBUFFER_UINT32(_f, _s, 0, NULL, _size)
957
958 #define VMSTATE_BUFFER_TEST(_f, _s, _test) \
959 VMSTATE_STATIC_BUFFER(_f, _s, 0, _test, 0, sizeof(typeof_field(_s, _f)))
960
961 #define VMSTATE_BUFFER_UNSAFE(_field, _state, _version, _size) \
962 VMSTATE_BUFFER_UNSAFE_INFO(_field, _state, _version, vmstate_info_buffer, _size)
963
964 #define VMSTATE_UNUSED_V(_v, _size) \
965 VMSTATE_UNUSED_BUFFER(NULL, _v, _size)
966
967 #define VMSTATE_UNUSED(_size) \
968 VMSTATE_UNUSED_V(0, _size)
969
970 #define VMSTATE_UNUSED_TEST(_test, _size) \
971 VMSTATE_UNUSED_BUFFER(_test, 0, _size)
972
973 #define VMSTATE_END_OF_LIST() \
974 {}
975
976 int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
977 void *opaque, int version_id);
978 void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
979 void *opaque, QJSON *vmdesc);
980
981 bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque);
982
983 /* Returns: 0 on success, -1 on failure */
984 int vmstate_register_with_alias_id(DeviceState *dev, int instance_id,
985 const VMStateDescription *vmsd,
986 void *base, int alias_id,
987 int required_for_version,
988 Error **errp);
989
990 /* Returns: 0 on success, -1 on failure */
991 static inline int vmstate_register(DeviceState *dev, int instance_id,
992 const VMStateDescription *vmsd,
993 void *opaque)
994 {
995 return vmstate_register_with_alias_id(dev, instance_id, vmsd,
996 opaque, -1, 0, NULL);
997 }
998
999 void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd,
1000 void *opaque);
1001
1002 struct MemoryRegion;
1003 void vmstate_register_ram(struct MemoryRegion *memory, DeviceState *dev);
1004 void vmstate_unregister_ram(struct MemoryRegion *memory, DeviceState *dev);
1005 void vmstate_register_ram_global(struct MemoryRegion *memory);
1006
1007 bool vmstate_check_only_migratable(const VMStateDescription *vmsd);
1008
1009 #endif
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