Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 1 | #include "qemu-common.h" |
| 2 | #include "migration/migration.h" |
| 3 | #include "migration/qemu-file.h" |
| 4 | #include "migration/vmstate.h" |
| 5 | #include "qemu/bitops.h" |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 6 | #include "trace.h" |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 7 | |
| 8 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
| 9 | void *opaque); |
| 10 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
| 11 | void *opaque); |
| 12 | |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 13 | static int vmstate_n_elems(void *opaque, VMStateField *field) |
| 14 | { |
| 15 | int n_elems = 1; |
| 16 | |
| 17 | if (field->flags & VMS_ARRAY) { |
| 18 | n_elems = field->num; |
| 19 | } else if (field->flags & VMS_VARRAY_INT32) { |
| 20 | n_elems = *(int32_t *)(opaque+field->num_offset); |
| 21 | } else if (field->flags & VMS_VARRAY_UINT32) { |
| 22 | n_elems = *(uint32_t *)(opaque+field->num_offset); |
| 23 | } else if (field->flags & VMS_VARRAY_UINT16) { |
| 24 | n_elems = *(uint16_t *)(opaque+field->num_offset); |
| 25 | } else if (field->flags & VMS_VARRAY_UINT8) { |
| 26 | n_elems = *(uint8_t *)(opaque+field->num_offset); |
| 27 | } |
| 28 | |
| 29 | return n_elems; |
| 30 | } |
| 31 | |
| 32 | static int vmstate_size(void *opaque, VMStateField *field) |
| 33 | { |
| 34 | int size = field->size; |
| 35 | |
| 36 | if (field->flags & VMS_VBUFFER) { |
| 37 | size = *(int32_t *)(opaque+field->size_offset); |
| 38 | if (field->flags & VMS_MULTIPLY) { |
| 39 | size *= field->size; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | return size; |
| 44 | } |
| 45 | |
| 46 | static void *vmstate_base_addr(void *opaque, VMStateField *field) |
| 47 | { |
| 48 | void *base_addr = opaque + field->offset; |
| 49 | |
| 50 | if (field->flags & VMS_POINTER) { |
| 51 | base_addr = *(void **)base_addr + field->start; |
| 52 | } |
| 53 | |
| 54 | return base_addr; |
| 55 | } |
| 56 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 57 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
| 58 | void *opaque, int version_id) |
| 59 | { |
| 60 | VMStateField *field = vmsd->fields; |
| 61 | int ret; |
| 62 | |
| 63 | if (version_id > vmsd->version_id) { |
| 64 | return -EINVAL; |
| 65 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 66 | if (version_id < vmsd->minimum_version_id) { |
Peter Maydell | 767adce | 2014-04-03 19:52:28 +0300 | [diff] [blame] | 67 | if (vmsd->load_state_old && |
| 68 | version_id >= vmsd->minimum_version_id_old) { |
| 69 | return vmsd->load_state_old(f, opaque, version_id); |
| 70 | } |
| 71 | return -EINVAL; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 72 | } |
| 73 | if (vmsd->pre_load) { |
| 74 | int ret = vmsd->pre_load(opaque); |
| 75 | if (ret) { |
| 76 | return ret; |
| 77 | } |
| 78 | } |
| 79 | while (field->name) { |
| 80 | if ((field->field_exists && |
| 81 | field->field_exists(opaque, version_id)) || |
| 82 | (!field->field_exists && |
| 83 | field->version_id <= version_id)) { |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 84 | void *base_addr = vmstate_base_addr(opaque, field); |
| 85 | int i, n_elems = vmstate_n_elems(opaque, field); |
| 86 | int size = vmstate_size(opaque, field); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 87 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 88 | for (i = 0; i < n_elems; i++) { |
| 89 | void *addr = base_addr + size * i; |
| 90 | |
| 91 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
| 92 | addr = *(void **)addr; |
| 93 | } |
| 94 | if (field->flags & VMS_STRUCT) { |
| 95 | ret = vmstate_load_state(f, field->vmsd, addr, |
| 96 | field->vmsd->version_id); |
| 97 | } else { |
| 98 | ret = field->info->get(f, addr, size); |
| 99 | |
| 100 | } |
| 101 | if (ret < 0) { |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 102 | trace_vmstate_load_field_error(field->name, ret); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 103 | return ret; |
| 104 | } |
| 105 | } |
Michael S. Tsirkin | 5bf81c8 | 2014-04-03 19:50:31 +0300 | [diff] [blame] | 106 | } else if (field->flags & VMS_MUST_EXIST) { |
| 107 | fprintf(stderr, "Input validation failed: %s/%s\n", |
| 108 | vmsd->name, field->name); |
| 109 | return -1; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 110 | } |
| 111 | field++; |
| 112 | } |
| 113 | ret = vmstate_subsection_load(f, vmsd, opaque); |
| 114 | if (ret != 0) { |
| 115 | return ret; |
| 116 | } |
| 117 | if (vmsd->post_load) { |
| 118 | return vmsd->post_load(opaque, version_id); |
| 119 | } |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
| 124 | void *opaque) |
| 125 | { |
| 126 | VMStateField *field = vmsd->fields; |
| 127 | |
| 128 | if (vmsd->pre_save) { |
| 129 | vmsd->pre_save(opaque); |
| 130 | } |
| 131 | while (field->name) { |
| 132 | if (!field->field_exists || |
| 133 | field->field_exists(opaque, vmsd->version_id)) { |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 134 | void *base_addr = vmstate_base_addr(opaque, field); |
| 135 | int i, n_elems = vmstate_n_elems(opaque, field); |
| 136 | int size = vmstate_size(opaque, field); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 137 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 138 | for (i = 0; i < n_elems; i++) { |
| 139 | void *addr = base_addr + size * i; |
| 140 | |
| 141 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
| 142 | addr = *(void **)addr; |
| 143 | } |
| 144 | if (field->flags & VMS_STRUCT) { |
| 145 | vmstate_save_state(f, field->vmsd, addr); |
| 146 | } else { |
| 147 | field->info->put(f, addr, size); |
| 148 | } |
| 149 | } |
Michael S. Tsirkin | 5bf81c8 | 2014-04-03 19:50:31 +0300 | [diff] [blame] | 150 | } else { |
| 151 | if (field->flags & VMS_MUST_EXIST) { |
| 152 | fprintf(stderr, "Output state validation failed: %s/%s\n", |
| 153 | vmsd->name, field->name); |
| 154 | assert(!(field->flags & VMS_MUST_EXIST)); |
| 155 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 156 | } |
| 157 | field++; |
| 158 | } |
| 159 | vmstate_subsection_save(f, vmsd, opaque); |
| 160 | } |
| 161 | |
| 162 | static const VMStateDescription * |
| 163 | vmstate_get_subsection(const VMStateSubsection *sub, char *idstr) |
| 164 | { |
| 165 | while (sub && sub->needed) { |
| 166 | if (strcmp(idstr, sub->vmsd->name) == 0) { |
| 167 | return sub->vmsd; |
| 168 | } |
| 169 | sub++; |
| 170 | } |
| 171 | return NULL; |
| 172 | } |
| 173 | |
| 174 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
| 175 | void *opaque) |
| 176 | { |
| 177 | while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) { |
| 178 | char idstr[256]; |
| 179 | int ret; |
| 180 | uint8_t version_id, len, size; |
| 181 | const VMStateDescription *sub_vmsd; |
| 182 | |
| 183 | len = qemu_peek_byte(f, 1); |
| 184 | if (len < strlen(vmsd->name) + 1) { |
| 185 | /* subsection name has be be "section_name/a" */ |
| 186 | return 0; |
| 187 | } |
| 188 | size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2); |
| 189 | if (size != len) { |
| 190 | return 0; |
| 191 | } |
| 192 | idstr[size] = 0; |
| 193 | |
| 194 | if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) { |
| 195 | /* it don't have a valid subsection name */ |
| 196 | return 0; |
| 197 | } |
| 198 | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); |
| 199 | if (sub_vmsd == NULL) { |
| 200 | return -ENOENT; |
| 201 | } |
| 202 | qemu_file_skip(f, 1); /* subsection */ |
| 203 | qemu_file_skip(f, 1); /* len */ |
| 204 | qemu_file_skip(f, len); /* idstr */ |
| 205 | version_id = qemu_get_be32(f); |
| 206 | |
| 207 | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
| 208 | if (ret) { |
| 209 | return ret; |
| 210 | } |
| 211 | } |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
| 216 | void *opaque) |
| 217 | { |
| 218 | const VMStateSubsection *sub = vmsd->subsections; |
| 219 | |
| 220 | while (sub && sub->needed) { |
| 221 | if (sub->needed(opaque)) { |
| 222 | const VMStateDescription *vmsd = sub->vmsd; |
| 223 | uint8_t len; |
| 224 | |
| 225 | qemu_put_byte(f, QEMU_VM_SUBSECTION); |
| 226 | len = strlen(vmsd->name); |
| 227 | qemu_put_byte(f, len); |
| 228 | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); |
| 229 | qemu_put_be32(f, vmsd->version_id); |
| 230 | vmstate_save_state(f, vmsd, opaque); |
| 231 | } |
| 232 | sub++; |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | /* bool */ |
| 237 | |
| 238 | static int get_bool(QEMUFile *f, void *pv, size_t size) |
| 239 | { |
| 240 | bool *v = pv; |
| 241 | *v = qemu_get_byte(f); |
| 242 | return 0; |
| 243 | } |
| 244 | |
| 245 | static void put_bool(QEMUFile *f, void *pv, size_t size) |
| 246 | { |
| 247 | bool *v = pv; |
| 248 | qemu_put_byte(f, *v); |
| 249 | } |
| 250 | |
| 251 | const VMStateInfo vmstate_info_bool = { |
| 252 | .name = "bool", |
| 253 | .get = get_bool, |
| 254 | .put = put_bool, |
| 255 | }; |
| 256 | |
| 257 | /* 8 bit int */ |
| 258 | |
| 259 | static int get_int8(QEMUFile *f, void *pv, size_t size) |
| 260 | { |
| 261 | int8_t *v = pv; |
| 262 | qemu_get_s8s(f, v); |
| 263 | return 0; |
| 264 | } |
| 265 | |
| 266 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
| 267 | { |
| 268 | int8_t *v = pv; |
| 269 | qemu_put_s8s(f, v); |
| 270 | } |
| 271 | |
| 272 | const VMStateInfo vmstate_info_int8 = { |
| 273 | .name = "int8", |
| 274 | .get = get_int8, |
| 275 | .put = put_int8, |
| 276 | }; |
| 277 | |
| 278 | /* 16 bit int */ |
| 279 | |
| 280 | static int get_int16(QEMUFile *f, void *pv, size_t size) |
| 281 | { |
| 282 | int16_t *v = pv; |
| 283 | qemu_get_sbe16s(f, v); |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
| 288 | { |
| 289 | int16_t *v = pv; |
| 290 | qemu_put_sbe16s(f, v); |
| 291 | } |
| 292 | |
| 293 | const VMStateInfo vmstate_info_int16 = { |
| 294 | .name = "int16", |
| 295 | .get = get_int16, |
| 296 | .put = put_int16, |
| 297 | }; |
| 298 | |
| 299 | /* 32 bit int */ |
| 300 | |
| 301 | static int get_int32(QEMUFile *f, void *pv, size_t size) |
| 302 | { |
| 303 | int32_t *v = pv; |
| 304 | qemu_get_sbe32s(f, v); |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
| 309 | { |
| 310 | int32_t *v = pv; |
| 311 | qemu_put_sbe32s(f, v); |
| 312 | } |
| 313 | |
| 314 | const VMStateInfo vmstate_info_int32 = { |
| 315 | .name = "int32", |
| 316 | .get = get_int32, |
| 317 | .put = put_int32, |
| 318 | }; |
| 319 | |
| 320 | /* 32 bit int. See that the received value is the same than the one |
| 321 | in the field */ |
| 322 | |
| 323 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
| 324 | { |
| 325 | int32_t *v = pv; |
| 326 | int32_t v2; |
| 327 | qemu_get_sbe32s(f, &v2); |
| 328 | |
| 329 | if (*v == v2) { |
| 330 | return 0; |
| 331 | } |
| 332 | return -EINVAL; |
| 333 | } |
| 334 | |
| 335 | const VMStateInfo vmstate_info_int32_equal = { |
| 336 | .name = "int32 equal", |
| 337 | .get = get_int32_equal, |
| 338 | .put = put_int32, |
| 339 | }; |
| 340 | |
Michael S. Tsirkin | d2ef4b6 | 2014-04-03 19:51:42 +0300 | [diff] [blame] | 341 | /* 32 bit int. Check that the received value is non-negative |
| 342 | * and less than or equal to the one in the field. |
| 343 | */ |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 344 | |
| 345 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
| 346 | { |
Dr. David Alan Gilbert | 24a370e | 2014-02-12 17:20:10 +0000 | [diff] [blame] | 347 | int32_t *cur = pv; |
| 348 | int32_t loaded; |
| 349 | qemu_get_sbe32s(f, &loaded); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 350 | |
Michael S. Tsirkin | d2ef4b6 | 2014-04-03 19:51:42 +0300 | [diff] [blame] | 351 | if (loaded >= 0 && loaded <= *cur) { |
Dr. David Alan Gilbert | 24a370e | 2014-02-12 17:20:10 +0000 | [diff] [blame] | 352 | *cur = loaded; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 353 | return 0; |
| 354 | } |
| 355 | return -EINVAL; |
| 356 | } |
| 357 | |
| 358 | const VMStateInfo vmstate_info_int32_le = { |
Dr. David Alan Gilbert | 24a370e | 2014-02-12 17:20:10 +0000 | [diff] [blame] | 359 | .name = "int32 le", |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 360 | .get = get_int32_le, |
| 361 | .put = put_int32, |
| 362 | }; |
| 363 | |
| 364 | /* 64 bit int */ |
| 365 | |
| 366 | static int get_int64(QEMUFile *f, void *pv, size_t size) |
| 367 | { |
| 368 | int64_t *v = pv; |
| 369 | qemu_get_sbe64s(f, v); |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
| 374 | { |
| 375 | int64_t *v = pv; |
| 376 | qemu_put_sbe64s(f, v); |
| 377 | } |
| 378 | |
| 379 | const VMStateInfo vmstate_info_int64 = { |
| 380 | .name = "int64", |
| 381 | .get = get_int64, |
| 382 | .put = put_int64, |
| 383 | }; |
| 384 | |
| 385 | /* 8 bit unsigned int */ |
| 386 | |
| 387 | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
| 388 | { |
| 389 | uint8_t *v = pv; |
| 390 | qemu_get_8s(f, v); |
| 391 | return 0; |
| 392 | } |
| 393 | |
| 394 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
| 395 | { |
| 396 | uint8_t *v = pv; |
| 397 | qemu_put_8s(f, v); |
| 398 | } |
| 399 | |
| 400 | const VMStateInfo vmstate_info_uint8 = { |
| 401 | .name = "uint8", |
| 402 | .get = get_uint8, |
| 403 | .put = put_uint8, |
| 404 | }; |
| 405 | |
| 406 | /* 16 bit unsigned int */ |
| 407 | |
| 408 | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
| 409 | { |
| 410 | uint16_t *v = pv; |
| 411 | qemu_get_be16s(f, v); |
| 412 | return 0; |
| 413 | } |
| 414 | |
| 415 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
| 416 | { |
| 417 | uint16_t *v = pv; |
| 418 | qemu_put_be16s(f, v); |
| 419 | } |
| 420 | |
| 421 | const VMStateInfo vmstate_info_uint16 = { |
| 422 | .name = "uint16", |
| 423 | .get = get_uint16, |
| 424 | .put = put_uint16, |
| 425 | }; |
| 426 | |
| 427 | /* 32 bit unsigned int */ |
| 428 | |
| 429 | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
| 430 | { |
| 431 | uint32_t *v = pv; |
| 432 | qemu_get_be32s(f, v); |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
| 437 | { |
| 438 | uint32_t *v = pv; |
| 439 | qemu_put_be32s(f, v); |
| 440 | } |
| 441 | |
| 442 | const VMStateInfo vmstate_info_uint32 = { |
| 443 | .name = "uint32", |
| 444 | .get = get_uint32, |
| 445 | .put = put_uint32, |
| 446 | }; |
| 447 | |
| 448 | /* 32 bit uint. See that the received value is the same than the one |
| 449 | in the field */ |
| 450 | |
| 451 | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size) |
| 452 | { |
| 453 | uint32_t *v = pv; |
| 454 | uint32_t v2; |
| 455 | qemu_get_be32s(f, &v2); |
| 456 | |
| 457 | if (*v == v2) { |
| 458 | return 0; |
| 459 | } |
| 460 | return -EINVAL; |
| 461 | } |
| 462 | |
| 463 | const VMStateInfo vmstate_info_uint32_equal = { |
| 464 | .name = "uint32 equal", |
| 465 | .get = get_uint32_equal, |
| 466 | .put = put_uint32, |
| 467 | }; |
| 468 | |
| 469 | /* 64 bit unsigned int */ |
| 470 | |
| 471 | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
| 472 | { |
| 473 | uint64_t *v = pv; |
| 474 | qemu_get_be64s(f, v); |
| 475 | return 0; |
| 476 | } |
| 477 | |
| 478 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
| 479 | { |
| 480 | uint64_t *v = pv; |
| 481 | qemu_put_be64s(f, v); |
| 482 | } |
| 483 | |
| 484 | const VMStateInfo vmstate_info_uint64 = { |
| 485 | .name = "uint64", |
| 486 | .get = get_uint64, |
| 487 | .put = put_uint64, |
| 488 | }; |
| 489 | |
| 490 | /* 64 bit unsigned int. See that the received value is the same than the one |
| 491 | in the field */ |
| 492 | |
| 493 | static int get_uint64_equal(QEMUFile *f, void *pv, size_t size) |
| 494 | { |
| 495 | uint64_t *v = pv; |
| 496 | uint64_t v2; |
| 497 | qemu_get_be64s(f, &v2); |
| 498 | |
| 499 | if (*v == v2) { |
| 500 | return 0; |
| 501 | } |
| 502 | return -EINVAL; |
| 503 | } |
| 504 | |
| 505 | const VMStateInfo vmstate_info_uint64_equal = { |
| 506 | .name = "int64 equal", |
| 507 | .get = get_uint64_equal, |
| 508 | .put = put_uint64, |
| 509 | }; |
| 510 | |
| 511 | /* 8 bit int. See that the received value is the same than the one |
| 512 | in the field */ |
| 513 | |
| 514 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
| 515 | { |
| 516 | uint8_t *v = pv; |
| 517 | uint8_t v2; |
| 518 | qemu_get_8s(f, &v2); |
| 519 | |
| 520 | if (*v == v2) { |
| 521 | return 0; |
| 522 | } |
| 523 | return -EINVAL; |
| 524 | } |
| 525 | |
| 526 | const VMStateInfo vmstate_info_uint8_equal = { |
| 527 | .name = "uint8 equal", |
| 528 | .get = get_uint8_equal, |
| 529 | .put = put_uint8, |
| 530 | }; |
| 531 | |
| 532 | /* 16 bit unsigned int int. See that the received value is the same than the one |
| 533 | in the field */ |
| 534 | |
| 535 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
| 536 | { |
| 537 | uint16_t *v = pv; |
| 538 | uint16_t v2; |
| 539 | qemu_get_be16s(f, &v2); |
| 540 | |
| 541 | if (*v == v2) { |
| 542 | return 0; |
| 543 | } |
| 544 | return -EINVAL; |
| 545 | } |
| 546 | |
| 547 | const VMStateInfo vmstate_info_uint16_equal = { |
| 548 | .name = "uint16 equal", |
| 549 | .get = get_uint16_equal, |
| 550 | .put = put_uint16, |
| 551 | }; |
| 552 | |
| 553 | /* floating point */ |
| 554 | |
| 555 | static int get_float64(QEMUFile *f, void *pv, size_t size) |
| 556 | { |
| 557 | float64 *v = pv; |
| 558 | |
| 559 | *v = make_float64(qemu_get_be64(f)); |
| 560 | return 0; |
| 561 | } |
| 562 | |
| 563 | static void put_float64(QEMUFile *f, void *pv, size_t size) |
| 564 | { |
| 565 | uint64_t *v = pv; |
| 566 | |
| 567 | qemu_put_be64(f, float64_val(*v)); |
| 568 | } |
| 569 | |
| 570 | const VMStateInfo vmstate_info_float64 = { |
| 571 | .name = "float64", |
| 572 | .get = get_float64, |
| 573 | .put = put_float64, |
| 574 | }; |
| 575 | |
| 576 | /* uint8_t buffers */ |
| 577 | |
| 578 | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
| 579 | { |
| 580 | uint8_t *v = pv; |
| 581 | qemu_get_buffer(f, v, size); |
| 582 | return 0; |
| 583 | } |
| 584 | |
| 585 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
| 586 | { |
| 587 | uint8_t *v = pv; |
| 588 | qemu_put_buffer(f, v, size); |
| 589 | } |
| 590 | |
| 591 | const VMStateInfo vmstate_info_buffer = { |
| 592 | .name = "buffer", |
| 593 | .get = get_buffer, |
| 594 | .put = put_buffer, |
| 595 | }; |
| 596 | |
| 597 | /* unused buffers: space that was used for some fields that are |
| 598 | not useful anymore */ |
| 599 | |
| 600 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
| 601 | { |
| 602 | uint8_t buf[1024]; |
| 603 | int block_len; |
| 604 | |
| 605 | while (size > 0) { |
| 606 | block_len = MIN(sizeof(buf), size); |
| 607 | size -= block_len; |
| 608 | qemu_get_buffer(f, buf, block_len); |
| 609 | } |
| 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
| 614 | { |
| 615 | static const uint8_t buf[1024]; |
| 616 | int block_len; |
| 617 | |
| 618 | while (size > 0) { |
| 619 | block_len = MIN(sizeof(buf), size); |
| 620 | size -= block_len; |
| 621 | qemu_put_buffer(f, buf, block_len); |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | const VMStateInfo vmstate_info_unused_buffer = { |
| 626 | .name = "unused_buffer", |
| 627 | .get = get_unused_buffer, |
| 628 | .put = put_unused_buffer, |
| 629 | }; |
| 630 | |
| 631 | /* bitmaps (as defined by bitmap.h). Note that size here is the size |
| 632 | * of the bitmap in bits. The on-the-wire format of a bitmap is 64 |
| 633 | * bit words with the bits in big endian order. The in-memory format |
| 634 | * is an array of 'unsigned long', which may be either 32 or 64 bits. |
| 635 | */ |
| 636 | /* This is the number of 64 bit words sent over the wire */ |
| 637 | #define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64) |
| 638 | static int get_bitmap(QEMUFile *f, void *pv, size_t size) |
| 639 | { |
| 640 | unsigned long *bmp = pv; |
| 641 | int i, idx = 0; |
| 642 | for (i = 0; i < BITS_TO_U64S(size); i++) { |
| 643 | uint64_t w = qemu_get_be64(f); |
| 644 | bmp[idx++] = w; |
| 645 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { |
| 646 | bmp[idx++] = w >> 32; |
| 647 | } |
| 648 | } |
| 649 | return 0; |
| 650 | } |
| 651 | |
| 652 | static void put_bitmap(QEMUFile *f, void *pv, size_t size) |
| 653 | { |
| 654 | unsigned long *bmp = pv; |
| 655 | int i, idx = 0; |
| 656 | for (i = 0; i < BITS_TO_U64S(size); i++) { |
| 657 | uint64_t w = bmp[idx++]; |
| 658 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { |
| 659 | w |= ((uint64_t)bmp[idx++]) << 32; |
| 660 | } |
| 661 | qemu_put_be64(f, w); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | const VMStateInfo vmstate_info_bitmap = { |
| 666 | .name = "bitmap", |
| 667 | .get = get_bitmap, |
| 668 | .put = put_bitmap, |
| 669 | }; |