Peter Maydell | 1393a48 | 2016-01-26 18:16:54 +0000 | [diff] [blame] | 1 | #include "qemu/osdep.h" |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 2 | #include "qemu-common.h" |
| 3 | #include "migration/migration.h" |
| 4 | #include "migration/qemu-file.h" |
| 5 | #include "migration/vmstate.h" |
| 6 | #include "qemu/bitops.h" |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 7 | #include "qemu/error-report.h" |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 8 | #include "trace.h" |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 9 | |
| 10 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 11 | void *opaque, QJSON *vmdesc); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 12 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
| 13 | void *opaque); |
| 14 | |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 15 | static int vmstate_n_elems(void *opaque, VMStateField *field) |
| 16 | { |
| 17 | int n_elems = 1; |
| 18 | |
| 19 | if (field->flags & VMS_ARRAY) { |
| 20 | n_elems = field->num; |
| 21 | } else if (field->flags & VMS_VARRAY_INT32) { |
| 22 | n_elems = *(int32_t *)(opaque+field->num_offset); |
| 23 | } else if (field->flags & VMS_VARRAY_UINT32) { |
| 24 | n_elems = *(uint32_t *)(opaque+field->num_offset); |
| 25 | } else if (field->flags & VMS_VARRAY_UINT16) { |
| 26 | n_elems = *(uint16_t *)(opaque+field->num_offset); |
| 27 | } else if (field->flags & VMS_VARRAY_UINT8) { |
| 28 | n_elems = *(uint8_t *)(opaque+field->num_offset); |
| 29 | } |
| 30 | |
Juan Quintela | b47d3af | 2016-01-11 12:40:22 +0000 | [diff] [blame] | 31 | if (field->flags & VMS_MULTIPLY_ELEMENTS) { |
| 32 | n_elems *= field->num; |
| 33 | } |
| 34 | |
Dr. David Alan Gilbert | 023ad1a | 2016-06-14 10:36:26 +0100 | [diff] [blame] | 35 | trace_vmstate_n_elems(field->name, n_elems); |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 36 | return n_elems; |
| 37 | } |
| 38 | |
| 39 | static int vmstate_size(void *opaque, VMStateField *field) |
| 40 | { |
| 41 | int size = field->size; |
| 42 | |
| 43 | if (field->flags & VMS_VBUFFER) { |
| 44 | size = *(int32_t *)(opaque+field->size_offset); |
| 45 | if (field->flags & VMS_MULTIPLY) { |
| 46 | size *= field->size; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | return size; |
| 51 | } |
| 52 | |
Alexey Kardashevskiy | f32935e | 2014-05-30 19:34:19 +1000 | [diff] [blame] | 53 | static void *vmstate_base_addr(void *opaque, VMStateField *field, bool alloc) |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 54 | { |
| 55 | void *base_addr = opaque + field->offset; |
| 56 | |
| 57 | if (field->flags & VMS_POINTER) { |
Alexey Kardashevskiy | f32935e | 2014-05-30 19:34:19 +1000 | [diff] [blame] | 58 | if (alloc && (field->flags & VMS_ALLOC)) { |
Alexey Kardashevskiy | 94ed706 | 2014-10-02 19:56:02 +1000 | [diff] [blame] | 59 | gsize size = 0; |
| 60 | if (field->flags & VMS_VBUFFER) { |
| 61 | size = vmstate_size(opaque, field); |
| 62 | } else { |
| 63 | int n_elems = vmstate_n_elems(opaque, field); |
| 64 | if (n_elems) { |
| 65 | size = n_elems * field->size; |
| 66 | } |
| 67 | } |
| 68 | if (size) { |
Alexey Kardashevskiy | f32935e | 2014-05-30 19:34:19 +1000 | [diff] [blame] | 69 | *((void **)base_addr + field->start) = g_malloc(size); |
| 70 | } |
| 71 | } |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 72 | base_addr = *(void **)base_addr + field->start; |
| 73 | } |
| 74 | |
| 75 | return base_addr; |
| 76 | } |
| 77 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 78 | int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd, |
| 79 | void *opaque, int version_id) |
| 80 | { |
| 81 | VMStateField *field = vmsd->fields; |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 82 | int ret = 0; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 83 | |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 84 | trace_vmstate_load_state(vmsd->name, version_id); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 85 | if (version_id > vmsd->version_id) { |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 86 | trace_vmstate_load_state_end(vmsd->name, "too new", -EINVAL); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 87 | return -EINVAL; |
| 88 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 89 | if (version_id < vmsd->minimum_version_id) { |
Peter Maydell | 767adce | 2014-04-03 19:52:28 +0300 | [diff] [blame] | 90 | if (vmsd->load_state_old && |
| 91 | version_id >= vmsd->minimum_version_id_old) { |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 92 | ret = vmsd->load_state_old(f, opaque, version_id); |
| 93 | trace_vmstate_load_state_end(vmsd->name, "old path", ret); |
| 94 | return ret; |
Peter Maydell | 767adce | 2014-04-03 19:52:28 +0300 | [diff] [blame] | 95 | } |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 96 | trace_vmstate_load_state_end(vmsd->name, "too old", -EINVAL); |
Peter Maydell | 767adce | 2014-04-03 19:52:28 +0300 | [diff] [blame] | 97 | return -EINVAL; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 98 | } |
| 99 | if (vmsd->pre_load) { |
| 100 | int ret = vmsd->pre_load(opaque); |
| 101 | if (ret) { |
| 102 | return ret; |
| 103 | } |
| 104 | } |
| 105 | while (field->name) { |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 106 | trace_vmstate_load_state_field(vmsd->name, field->name); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 107 | if ((field->field_exists && |
| 108 | field->field_exists(opaque, version_id)) || |
| 109 | (!field->field_exists && |
| 110 | field->version_id <= version_id)) { |
Alexey Kardashevskiy | f32935e | 2014-05-30 19:34:19 +1000 | [diff] [blame] | 111 | void *base_addr = vmstate_base_addr(opaque, field, true); |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 112 | int i, n_elems = vmstate_n_elems(opaque, field); |
| 113 | int size = vmstate_size(opaque, field); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 114 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 115 | for (i = 0; i < n_elems; i++) { |
| 116 | void *addr = base_addr + size * i; |
| 117 | |
| 118 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
| 119 | addr = *(void **)addr; |
| 120 | } |
| 121 | if (field->flags & VMS_STRUCT) { |
| 122 | ret = vmstate_load_state(f, field->vmsd, addr, |
| 123 | field->vmsd->version_id); |
| 124 | } else { |
| 125 | ret = field->info->get(f, addr, size); |
| 126 | |
| 127 | } |
Juan Quintela | 13cde50 | 2014-04-05 20:16:22 +0200 | [diff] [blame] | 128 | if (ret >= 0) { |
| 129 | ret = qemu_file_get_error(f); |
| 130 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 131 | if (ret < 0) { |
Juan Quintela | 13cde50 | 2014-04-05 20:16:22 +0200 | [diff] [blame] | 132 | qemu_file_set_error(f, ret); |
Alexey Kardashevskiy | 9013dca | 2014-03-11 10:42:29 +1100 | [diff] [blame] | 133 | trace_vmstate_load_field_error(field->name, ret); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 134 | return ret; |
| 135 | } |
| 136 | } |
Michael S. Tsirkin | 5bf81c8 | 2014-04-03 19:50:31 +0300 | [diff] [blame] | 137 | } else if (field->flags & VMS_MUST_EXIST) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 138 | error_report("Input validation failed: %s/%s", |
| 139 | vmsd->name, field->name); |
Michael S. Tsirkin | 5bf81c8 | 2014-04-03 19:50:31 +0300 | [diff] [blame] | 140 | return -1; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 141 | } |
| 142 | field++; |
| 143 | } |
| 144 | ret = vmstate_subsection_load(f, vmsd, opaque); |
| 145 | if (ret != 0) { |
| 146 | return ret; |
| 147 | } |
| 148 | if (vmsd->post_load) { |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 149 | ret = vmsd->post_load(opaque, version_id); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 150 | } |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 151 | trace_vmstate_load_state_end(vmsd->name, "end", ret); |
| 152 | return ret; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 153 | } |
| 154 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 155 | static int vmfield_name_num(VMStateField *start, VMStateField *search) |
| 156 | { |
| 157 | VMStateField *field; |
| 158 | int found = 0; |
| 159 | |
| 160 | for (field = start; field->name; field++) { |
| 161 | if (!strcmp(field->name, search->name)) { |
| 162 | if (field == search) { |
| 163 | return found; |
| 164 | } |
| 165 | found++; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return -1; |
| 170 | } |
| 171 | |
| 172 | static bool vmfield_name_is_unique(VMStateField *start, VMStateField *search) |
| 173 | { |
| 174 | VMStateField *field; |
| 175 | int found = 0; |
| 176 | |
| 177 | for (field = start; field->name; field++) { |
| 178 | if (!strcmp(field->name, search->name)) { |
| 179 | found++; |
| 180 | /* name found more than once, so it's not unique */ |
| 181 | if (found > 1) { |
| 182 | return false; |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | return true; |
| 188 | } |
| 189 | |
| 190 | static const char *vmfield_get_type_name(VMStateField *field) |
| 191 | { |
| 192 | const char *type = "unknown"; |
| 193 | |
| 194 | if (field->flags & VMS_STRUCT) { |
| 195 | type = "struct"; |
| 196 | } else if (field->info->name) { |
| 197 | type = field->info->name; |
| 198 | } |
| 199 | |
| 200 | return type; |
| 201 | } |
| 202 | |
| 203 | static bool vmsd_can_compress(VMStateField *field) |
| 204 | { |
| 205 | if (field->field_exists) { |
| 206 | /* Dynamically existing fields mess up compression */ |
| 207 | return false; |
| 208 | } |
| 209 | |
| 210 | if (field->flags & VMS_STRUCT) { |
| 211 | VMStateField *sfield = field->vmsd->fields; |
| 212 | while (sfield->name) { |
| 213 | if (!vmsd_can_compress(sfield)) { |
| 214 | /* Child elements can't compress, so can't we */ |
| 215 | return false; |
| 216 | } |
| 217 | sfield++; |
| 218 | } |
| 219 | |
| 220 | if (field->vmsd->subsections) { |
| 221 | /* Subsections may come and go, better don't compress */ |
| 222 | return false; |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | return true; |
| 227 | } |
| 228 | |
| 229 | static void vmsd_desc_field_start(const VMStateDescription *vmsd, QJSON *vmdesc, |
| 230 | VMStateField *field, int i, int max) |
| 231 | { |
| 232 | char *name, *old_name; |
| 233 | bool is_array = max > 1; |
| 234 | bool can_compress = vmsd_can_compress(field); |
| 235 | |
| 236 | if (!vmdesc) { |
| 237 | return; |
| 238 | } |
| 239 | |
| 240 | name = g_strdup(field->name); |
| 241 | |
| 242 | /* Field name is not unique, need to make it unique */ |
| 243 | if (!vmfield_name_is_unique(vmsd->fields, field)) { |
| 244 | int num = vmfield_name_num(vmsd->fields, field); |
| 245 | old_name = name; |
| 246 | name = g_strdup_printf("%s[%d]", name, num); |
| 247 | g_free(old_name); |
| 248 | } |
| 249 | |
| 250 | json_start_object(vmdesc, NULL); |
| 251 | json_prop_str(vmdesc, "name", name); |
| 252 | if (is_array) { |
| 253 | if (can_compress) { |
| 254 | json_prop_int(vmdesc, "array_len", max); |
| 255 | } else { |
| 256 | json_prop_int(vmdesc, "index", i); |
| 257 | } |
| 258 | } |
| 259 | json_prop_str(vmdesc, "type", vmfield_get_type_name(field)); |
| 260 | |
| 261 | if (field->flags & VMS_STRUCT) { |
| 262 | json_start_object(vmdesc, "struct"); |
| 263 | } |
| 264 | |
| 265 | g_free(name); |
| 266 | } |
| 267 | |
| 268 | static void vmsd_desc_field_end(const VMStateDescription *vmsd, QJSON *vmdesc, |
| 269 | VMStateField *field, size_t size, int i) |
| 270 | { |
| 271 | if (!vmdesc) { |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | if (field->flags & VMS_STRUCT) { |
| 276 | /* We printed a struct in between, close its child object */ |
| 277 | json_end_object(vmdesc); |
| 278 | } |
| 279 | |
| 280 | json_prop_int(vmdesc, "size", size); |
| 281 | json_end_object(vmdesc); |
| 282 | } |
| 283 | |
Juan Quintela | df89615 | 2014-10-15 09:39:14 +0200 | [diff] [blame] | 284 | |
| 285 | bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque) |
| 286 | { |
| 287 | if (vmsd->needed && !vmsd->needed(opaque)) { |
| 288 | /* optional section not needed */ |
| 289 | return false; |
| 290 | } |
| 291 | return true; |
| 292 | } |
| 293 | |
| 294 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 295 | void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd, |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 296 | void *opaque, QJSON *vmdesc) |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 297 | { |
| 298 | VMStateField *field = vmsd->fields; |
| 299 | |
| 300 | if (vmsd->pre_save) { |
| 301 | vmsd->pre_save(opaque); |
| 302 | } |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 303 | |
| 304 | if (vmdesc) { |
| 305 | json_prop_str(vmdesc, "vmsd_name", vmsd->name); |
| 306 | json_prop_int(vmdesc, "version", vmsd->version_id); |
| 307 | json_start_array(vmdesc, "fields"); |
| 308 | } |
| 309 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 310 | while (field->name) { |
| 311 | if (!field->field_exists || |
| 312 | field->field_exists(opaque, vmsd->version_id)) { |
Alexey Kardashevskiy | f32935e | 2014-05-30 19:34:19 +1000 | [diff] [blame] | 313 | void *base_addr = vmstate_base_addr(opaque, field, false); |
Michael S. Tsirkin | 35fc1f7 | 2014-04-03 19:50:26 +0300 | [diff] [blame] | 314 | int i, n_elems = vmstate_n_elems(opaque, field); |
| 315 | int size = vmstate_size(opaque, field); |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 316 | int64_t old_offset, written_bytes; |
| 317 | QJSON *vmdesc_loop = vmdesc; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 318 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 319 | for (i = 0; i < n_elems; i++) { |
| 320 | void *addr = base_addr + size * i; |
| 321 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 322 | vmsd_desc_field_start(vmsd, vmdesc_loop, field, i, n_elems); |
| 323 | old_offset = qemu_ftell_fast(f); |
| 324 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 325 | if (field->flags & VMS_ARRAY_OF_POINTER) { |
| 326 | addr = *(void **)addr; |
| 327 | } |
| 328 | if (field->flags & VMS_STRUCT) { |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 329 | vmstate_save_state(f, field->vmsd, addr, vmdesc_loop); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 330 | } else { |
| 331 | field->info->put(f, addr, size); |
| 332 | } |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 333 | |
| 334 | written_bytes = qemu_ftell_fast(f) - old_offset; |
| 335 | vmsd_desc_field_end(vmsd, vmdesc_loop, field, written_bytes, i); |
| 336 | |
| 337 | /* Compressed arrays only care about the first element */ |
| 338 | if (vmdesc_loop && vmsd_can_compress(field)) { |
| 339 | vmdesc_loop = NULL; |
| 340 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 341 | } |
Michael S. Tsirkin | 5bf81c8 | 2014-04-03 19:50:31 +0300 | [diff] [blame] | 342 | } else { |
| 343 | if (field->flags & VMS_MUST_EXIST) { |
Dr. David Alan Gilbert | 6a64b64 | 2015-01-21 10:14:47 +0000 | [diff] [blame] | 344 | error_report("Output state validation failed: %s/%s", |
Michael S. Tsirkin | 5bf81c8 | 2014-04-03 19:50:31 +0300 | [diff] [blame] | 345 | vmsd->name, field->name); |
| 346 | assert(!(field->flags & VMS_MUST_EXIST)); |
| 347 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 348 | } |
| 349 | field++; |
| 350 | } |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 351 | |
| 352 | if (vmdesc) { |
| 353 | json_end_array(vmdesc); |
| 354 | } |
| 355 | |
| 356 | vmstate_subsection_save(f, vmsd, opaque, vmdesc); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | static const VMStateDescription * |
Juan Quintela | 5cd8cad | 2014-09-23 14:09:54 +0200 | [diff] [blame] | 360 | vmstate_get_subsection(const VMStateDescription **sub, char *idstr) |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 361 | { |
Juan Quintela | 5cd8cad | 2014-09-23 14:09:54 +0200 | [diff] [blame] | 362 | while (sub && *sub && (*sub)->needed) { |
| 363 | if (strcmp(idstr, (*sub)->name) == 0) { |
| 364 | return *sub; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 365 | } |
| 366 | sub++; |
| 367 | } |
| 368 | return NULL; |
| 369 | } |
| 370 | |
| 371 | static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, |
| 372 | void *opaque) |
| 373 | { |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 374 | trace_vmstate_subsection_load(vmsd->name); |
| 375 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 376 | while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) { |
Dr. David Alan Gilbert | 7c1e52b | 2015-05-21 13:24:15 +0100 | [diff] [blame] | 377 | char idstr[256], *idstr_ret; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 378 | int ret; |
| 379 | uint8_t version_id, len, size; |
| 380 | const VMStateDescription *sub_vmsd; |
| 381 | |
| 382 | len = qemu_peek_byte(f, 1); |
| 383 | if (len < strlen(vmsd->name) + 1) { |
| 384 | /* subsection name has be be "section_name/a" */ |
Dr. David Alan Gilbert | 023ad1a | 2016-06-14 10:36:26 +0100 | [diff] [blame] | 385 | trace_vmstate_subsection_load_bad(vmsd->name, "(short)", ""); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 386 | return 0; |
| 387 | } |
Dr. David Alan Gilbert | 7c1e52b | 2015-05-21 13:24:15 +0100 | [diff] [blame] | 388 | size = qemu_peek_buffer(f, (uint8_t **)&idstr_ret, len, 2); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 389 | if (size != len) { |
Dr. David Alan Gilbert | 023ad1a | 2016-06-14 10:36:26 +0100 | [diff] [blame] | 390 | trace_vmstate_subsection_load_bad(vmsd->name, "(peek fail)", ""); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 391 | return 0; |
| 392 | } |
Dr. David Alan Gilbert | 7c1e52b | 2015-05-21 13:24:15 +0100 | [diff] [blame] | 393 | memcpy(idstr, idstr_ret, size); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 394 | idstr[size] = 0; |
| 395 | |
| 396 | if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) { |
Dr. David Alan Gilbert | 023ad1a | 2016-06-14 10:36:26 +0100 | [diff] [blame] | 397 | trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(prefix)"); |
| 398 | /* it doesn't have a valid subsection name */ |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 399 | return 0; |
| 400 | } |
| 401 | sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr); |
| 402 | if (sub_vmsd == NULL) { |
Dr. David Alan Gilbert | 023ad1a | 2016-06-14 10:36:26 +0100 | [diff] [blame] | 403 | trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(lookup)"); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 404 | return -ENOENT; |
| 405 | } |
| 406 | qemu_file_skip(f, 1); /* subsection */ |
| 407 | qemu_file_skip(f, 1); /* len */ |
| 408 | qemu_file_skip(f, len); /* idstr */ |
| 409 | version_id = qemu_get_be32(f); |
| 410 | |
| 411 | ret = vmstate_load_state(f, sub_vmsd, opaque, version_id); |
| 412 | if (ret) { |
Dr. David Alan Gilbert | 023ad1a | 2016-06-14 10:36:26 +0100 | [diff] [blame] | 413 | trace_vmstate_subsection_load_bad(vmsd->name, idstr, "(child)"); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 414 | return ret; |
| 415 | } |
| 416 | } |
Dr. David Alan Gilbert | a5df2a0 | 2015-01-21 10:14:48 +0000 | [diff] [blame] | 417 | |
| 418 | trace_vmstate_subsection_load_good(vmsd->name); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 423 | void *opaque, QJSON *vmdesc) |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 424 | { |
Juan Quintela | 5cd8cad | 2014-09-23 14:09:54 +0200 | [diff] [blame] | 425 | const VMStateDescription **sub = vmsd->subsections; |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 426 | bool subsection_found = false; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 427 | |
Juan Quintela | 5cd8cad | 2014-09-23 14:09:54 +0200 | [diff] [blame] | 428 | while (sub && *sub && (*sub)->needed) { |
| 429 | if ((*sub)->needed(opaque)) { |
| 430 | const VMStateDescription *vmsd = *sub; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 431 | uint8_t len; |
| 432 | |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 433 | if (vmdesc) { |
| 434 | /* Only create subsection array when we have any */ |
| 435 | if (!subsection_found) { |
| 436 | json_start_array(vmdesc, "subsections"); |
| 437 | subsection_found = true; |
| 438 | } |
| 439 | |
| 440 | json_start_object(vmdesc, NULL); |
| 441 | } |
| 442 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 443 | qemu_put_byte(f, QEMU_VM_SUBSECTION); |
| 444 | len = strlen(vmsd->name); |
| 445 | qemu_put_byte(f, len); |
| 446 | qemu_put_buffer(f, (uint8_t *)vmsd->name, len); |
| 447 | qemu_put_be32(f, vmsd->version_id); |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 448 | vmstate_save_state(f, vmsd, opaque, vmdesc); |
| 449 | |
| 450 | if (vmdesc) { |
| 451 | json_end_object(vmdesc); |
| 452 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 453 | } |
| 454 | sub++; |
| 455 | } |
Alexander Graf | 8118f09 | 2015-01-22 15:01:39 +0100 | [diff] [blame] | 456 | |
| 457 | if (vmdesc && subsection_found) { |
| 458 | json_end_array(vmdesc); |
| 459 | } |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 460 | } |
| 461 | |
| 462 | /* bool */ |
| 463 | |
| 464 | static int get_bool(QEMUFile *f, void *pv, size_t size) |
| 465 | { |
| 466 | bool *v = pv; |
| 467 | *v = qemu_get_byte(f); |
| 468 | return 0; |
| 469 | } |
| 470 | |
| 471 | static void put_bool(QEMUFile *f, void *pv, size_t size) |
| 472 | { |
| 473 | bool *v = pv; |
| 474 | qemu_put_byte(f, *v); |
| 475 | } |
| 476 | |
| 477 | const VMStateInfo vmstate_info_bool = { |
| 478 | .name = "bool", |
| 479 | .get = get_bool, |
| 480 | .put = put_bool, |
| 481 | }; |
| 482 | |
| 483 | /* 8 bit int */ |
| 484 | |
| 485 | static int get_int8(QEMUFile *f, void *pv, size_t size) |
| 486 | { |
| 487 | int8_t *v = pv; |
| 488 | qemu_get_s8s(f, v); |
| 489 | return 0; |
| 490 | } |
| 491 | |
| 492 | static void put_int8(QEMUFile *f, void *pv, size_t size) |
| 493 | { |
| 494 | int8_t *v = pv; |
| 495 | qemu_put_s8s(f, v); |
| 496 | } |
| 497 | |
| 498 | const VMStateInfo vmstate_info_int8 = { |
| 499 | .name = "int8", |
| 500 | .get = get_int8, |
| 501 | .put = put_int8, |
| 502 | }; |
| 503 | |
| 504 | /* 16 bit int */ |
| 505 | |
| 506 | static int get_int16(QEMUFile *f, void *pv, size_t size) |
| 507 | { |
| 508 | int16_t *v = pv; |
| 509 | qemu_get_sbe16s(f, v); |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | static void put_int16(QEMUFile *f, void *pv, size_t size) |
| 514 | { |
| 515 | int16_t *v = pv; |
| 516 | qemu_put_sbe16s(f, v); |
| 517 | } |
| 518 | |
| 519 | const VMStateInfo vmstate_info_int16 = { |
| 520 | .name = "int16", |
| 521 | .get = get_int16, |
| 522 | .put = put_int16, |
| 523 | }; |
| 524 | |
| 525 | /* 32 bit int */ |
| 526 | |
| 527 | static int get_int32(QEMUFile *f, void *pv, size_t size) |
| 528 | { |
| 529 | int32_t *v = pv; |
| 530 | qemu_get_sbe32s(f, v); |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | static void put_int32(QEMUFile *f, void *pv, size_t size) |
| 535 | { |
| 536 | int32_t *v = pv; |
| 537 | qemu_put_sbe32s(f, v); |
| 538 | } |
| 539 | |
| 540 | const VMStateInfo vmstate_info_int32 = { |
| 541 | .name = "int32", |
| 542 | .get = get_int32, |
| 543 | .put = put_int32, |
| 544 | }; |
| 545 | |
| 546 | /* 32 bit int. See that the received value is the same than the one |
| 547 | in the field */ |
| 548 | |
| 549 | static int get_int32_equal(QEMUFile *f, void *pv, size_t size) |
| 550 | { |
| 551 | int32_t *v = pv; |
| 552 | int32_t v2; |
| 553 | qemu_get_sbe32s(f, &v2); |
| 554 | |
| 555 | if (*v == v2) { |
| 556 | return 0; |
| 557 | } |
| 558 | return -EINVAL; |
| 559 | } |
| 560 | |
| 561 | const VMStateInfo vmstate_info_int32_equal = { |
| 562 | .name = "int32 equal", |
| 563 | .get = get_int32_equal, |
| 564 | .put = put_int32, |
| 565 | }; |
| 566 | |
Michael S. Tsirkin | d2ef4b6 | 2014-04-03 19:51:42 +0300 | [diff] [blame] | 567 | /* 32 bit int. Check that the received value is non-negative |
| 568 | * and less than or equal to the one in the field. |
| 569 | */ |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 570 | |
| 571 | static int get_int32_le(QEMUFile *f, void *pv, size_t size) |
| 572 | { |
Dr. David Alan Gilbert | 24a370e | 2014-02-12 17:20:10 +0000 | [diff] [blame] | 573 | int32_t *cur = pv; |
| 574 | int32_t loaded; |
| 575 | qemu_get_sbe32s(f, &loaded); |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 576 | |
Michael S. Tsirkin | d2ef4b6 | 2014-04-03 19:51:42 +0300 | [diff] [blame] | 577 | if (loaded >= 0 && loaded <= *cur) { |
Dr. David Alan Gilbert | 24a370e | 2014-02-12 17:20:10 +0000 | [diff] [blame] | 578 | *cur = loaded; |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 579 | return 0; |
| 580 | } |
| 581 | return -EINVAL; |
| 582 | } |
| 583 | |
| 584 | const VMStateInfo vmstate_info_int32_le = { |
Dr. David Alan Gilbert | 24a370e | 2014-02-12 17:20:10 +0000 | [diff] [blame] | 585 | .name = "int32 le", |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 586 | .get = get_int32_le, |
| 587 | .put = put_int32, |
| 588 | }; |
| 589 | |
| 590 | /* 64 bit int */ |
| 591 | |
| 592 | static int get_int64(QEMUFile *f, void *pv, size_t size) |
| 593 | { |
| 594 | int64_t *v = pv; |
| 595 | qemu_get_sbe64s(f, v); |
| 596 | return 0; |
| 597 | } |
| 598 | |
| 599 | static void put_int64(QEMUFile *f, void *pv, size_t size) |
| 600 | { |
| 601 | int64_t *v = pv; |
| 602 | qemu_put_sbe64s(f, v); |
| 603 | } |
| 604 | |
| 605 | const VMStateInfo vmstate_info_int64 = { |
| 606 | .name = "int64", |
| 607 | .get = get_int64, |
| 608 | .put = put_int64, |
| 609 | }; |
| 610 | |
| 611 | /* 8 bit unsigned int */ |
| 612 | |
| 613 | static int get_uint8(QEMUFile *f, void *pv, size_t size) |
| 614 | { |
| 615 | uint8_t *v = pv; |
| 616 | qemu_get_8s(f, v); |
| 617 | return 0; |
| 618 | } |
| 619 | |
| 620 | static void put_uint8(QEMUFile *f, void *pv, size_t size) |
| 621 | { |
| 622 | uint8_t *v = pv; |
| 623 | qemu_put_8s(f, v); |
| 624 | } |
| 625 | |
| 626 | const VMStateInfo vmstate_info_uint8 = { |
| 627 | .name = "uint8", |
| 628 | .get = get_uint8, |
| 629 | .put = put_uint8, |
| 630 | }; |
| 631 | |
| 632 | /* 16 bit unsigned int */ |
| 633 | |
| 634 | static int get_uint16(QEMUFile *f, void *pv, size_t size) |
| 635 | { |
| 636 | uint16_t *v = pv; |
| 637 | qemu_get_be16s(f, v); |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | static void put_uint16(QEMUFile *f, void *pv, size_t size) |
| 642 | { |
| 643 | uint16_t *v = pv; |
| 644 | qemu_put_be16s(f, v); |
| 645 | } |
| 646 | |
| 647 | const VMStateInfo vmstate_info_uint16 = { |
| 648 | .name = "uint16", |
| 649 | .get = get_uint16, |
| 650 | .put = put_uint16, |
| 651 | }; |
| 652 | |
| 653 | /* 32 bit unsigned int */ |
| 654 | |
| 655 | static int get_uint32(QEMUFile *f, void *pv, size_t size) |
| 656 | { |
| 657 | uint32_t *v = pv; |
| 658 | qemu_get_be32s(f, v); |
| 659 | return 0; |
| 660 | } |
| 661 | |
| 662 | static void put_uint32(QEMUFile *f, void *pv, size_t size) |
| 663 | { |
| 664 | uint32_t *v = pv; |
| 665 | qemu_put_be32s(f, v); |
| 666 | } |
| 667 | |
| 668 | const VMStateInfo vmstate_info_uint32 = { |
| 669 | .name = "uint32", |
| 670 | .get = get_uint32, |
| 671 | .put = put_uint32, |
| 672 | }; |
| 673 | |
| 674 | /* 32 bit uint. See that the received value is the same than the one |
| 675 | in the field */ |
| 676 | |
| 677 | static int get_uint32_equal(QEMUFile *f, void *pv, size_t size) |
| 678 | { |
| 679 | uint32_t *v = pv; |
| 680 | uint32_t v2; |
| 681 | qemu_get_be32s(f, &v2); |
| 682 | |
| 683 | if (*v == v2) { |
| 684 | return 0; |
| 685 | } |
| 686 | return -EINVAL; |
| 687 | } |
| 688 | |
| 689 | const VMStateInfo vmstate_info_uint32_equal = { |
| 690 | .name = "uint32 equal", |
| 691 | .get = get_uint32_equal, |
| 692 | .put = put_uint32, |
| 693 | }; |
| 694 | |
| 695 | /* 64 bit unsigned int */ |
| 696 | |
| 697 | static int get_uint64(QEMUFile *f, void *pv, size_t size) |
| 698 | { |
| 699 | uint64_t *v = pv; |
| 700 | qemu_get_be64s(f, v); |
| 701 | return 0; |
| 702 | } |
| 703 | |
| 704 | static void put_uint64(QEMUFile *f, void *pv, size_t size) |
| 705 | { |
| 706 | uint64_t *v = pv; |
| 707 | qemu_put_be64s(f, v); |
| 708 | } |
| 709 | |
| 710 | const VMStateInfo vmstate_info_uint64 = { |
| 711 | .name = "uint64", |
| 712 | .get = get_uint64, |
| 713 | .put = put_uint64, |
| 714 | }; |
| 715 | |
| 716 | /* 64 bit unsigned int. See that the received value is the same than the one |
| 717 | in the field */ |
| 718 | |
| 719 | static int get_uint64_equal(QEMUFile *f, void *pv, size_t size) |
| 720 | { |
| 721 | uint64_t *v = pv; |
| 722 | uint64_t v2; |
| 723 | qemu_get_be64s(f, &v2); |
| 724 | |
| 725 | if (*v == v2) { |
| 726 | return 0; |
| 727 | } |
| 728 | return -EINVAL; |
| 729 | } |
| 730 | |
| 731 | const VMStateInfo vmstate_info_uint64_equal = { |
| 732 | .name = "int64 equal", |
| 733 | .get = get_uint64_equal, |
| 734 | .put = put_uint64, |
| 735 | }; |
| 736 | |
| 737 | /* 8 bit int. See that the received value is the same than the one |
| 738 | in the field */ |
| 739 | |
| 740 | static int get_uint8_equal(QEMUFile *f, void *pv, size_t size) |
| 741 | { |
| 742 | uint8_t *v = pv; |
| 743 | uint8_t v2; |
| 744 | qemu_get_8s(f, &v2); |
| 745 | |
| 746 | if (*v == v2) { |
| 747 | return 0; |
| 748 | } |
| 749 | return -EINVAL; |
| 750 | } |
| 751 | |
| 752 | const VMStateInfo vmstate_info_uint8_equal = { |
| 753 | .name = "uint8 equal", |
| 754 | .get = get_uint8_equal, |
| 755 | .put = put_uint8, |
| 756 | }; |
| 757 | |
| 758 | /* 16 bit unsigned int int. See that the received value is the same than the one |
| 759 | in the field */ |
| 760 | |
| 761 | static int get_uint16_equal(QEMUFile *f, void *pv, size_t size) |
| 762 | { |
| 763 | uint16_t *v = pv; |
| 764 | uint16_t v2; |
| 765 | qemu_get_be16s(f, &v2); |
| 766 | |
| 767 | if (*v == v2) { |
| 768 | return 0; |
| 769 | } |
| 770 | return -EINVAL; |
| 771 | } |
| 772 | |
| 773 | const VMStateInfo vmstate_info_uint16_equal = { |
| 774 | .name = "uint16 equal", |
| 775 | .get = get_uint16_equal, |
| 776 | .put = put_uint16, |
| 777 | }; |
| 778 | |
| 779 | /* floating point */ |
| 780 | |
| 781 | static int get_float64(QEMUFile *f, void *pv, size_t size) |
| 782 | { |
| 783 | float64 *v = pv; |
| 784 | |
| 785 | *v = make_float64(qemu_get_be64(f)); |
| 786 | return 0; |
| 787 | } |
| 788 | |
| 789 | static void put_float64(QEMUFile *f, void *pv, size_t size) |
| 790 | { |
| 791 | uint64_t *v = pv; |
| 792 | |
| 793 | qemu_put_be64(f, float64_val(*v)); |
| 794 | } |
| 795 | |
| 796 | const VMStateInfo vmstate_info_float64 = { |
| 797 | .name = "float64", |
| 798 | .get = get_float64, |
| 799 | .put = put_float64, |
| 800 | }; |
| 801 | |
Juan Quintela | 5517474 | 2016-01-11 12:40:21 +0000 | [diff] [blame] | 802 | /* CPU_DoubleU type */ |
| 803 | |
| 804 | static int get_cpudouble(QEMUFile *f, void *pv, size_t size) |
| 805 | { |
| 806 | CPU_DoubleU *v = pv; |
| 807 | qemu_get_be32s(f, &v->l.upper); |
| 808 | qemu_get_be32s(f, &v->l.lower); |
| 809 | return 0; |
| 810 | } |
| 811 | |
| 812 | static void put_cpudouble(QEMUFile *f, void *pv, size_t size) |
| 813 | { |
| 814 | CPU_DoubleU *v = pv; |
| 815 | qemu_put_be32s(f, &v->l.upper); |
| 816 | qemu_put_be32s(f, &v->l.lower); |
| 817 | } |
| 818 | |
| 819 | const VMStateInfo vmstate_info_cpudouble = { |
| 820 | .name = "CPU_Double_U", |
| 821 | .get = get_cpudouble, |
| 822 | .put = put_cpudouble, |
| 823 | }; |
| 824 | |
Eduardo Habkost | b6fcfa5 | 2013-11-28 12:01:15 -0200 | [diff] [blame] | 825 | /* uint8_t buffers */ |
| 826 | |
| 827 | static int get_buffer(QEMUFile *f, void *pv, size_t size) |
| 828 | { |
| 829 | uint8_t *v = pv; |
| 830 | qemu_get_buffer(f, v, size); |
| 831 | return 0; |
| 832 | } |
| 833 | |
| 834 | static void put_buffer(QEMUFile *f, void *pv, size_t size) |
| 835 | { |
| 836 | uint8_t *v = pv; |
| 837 | qemu_put_buffer(f, v, size); |
| 838 | } |
| 839 | |
| 840 | const VMStateInfo vmstate_info_buffer = { |
| 841 | .name = "buffer", |
| 842 | .get = get_buffer, |
| 843 | .put = put_buffer, |
| 844 | }; |
| 845 | |
| 846 | /* unused buffers: space that was used for some fields that are |
| 847 | not useful anymore */ |
| 848 | |
| 849 | static int get_unused_buffer(QEMUFile *f, void *pv, size_t size) |
| 850 | { |
| 851 | uint8_t buf[1024]; |
| 852 | int block_len; |
| 853 | |
| 854 | while (size > 0) { |
| 855 | block_len = MIN(sizeof(buf), size); |
| 856 | size -= block_len; |
| 857 | qemu_get_buffer(f, buf, block_len); |
| 858 | } |
| 859 | return 0; |
| 860 | } |
| 861 | |
| 862 | static void put_unused_buffer(QEMUFile *f, void *pv, size_t size) |
| 863 | { |
| 864 | static const uint8_t buf[1024]; |
| 865 | int block_len; |
| 866 | |
| 867 | while (size > 0) { |
| 868 | block_len = MIN(sizeof(buf), size); |
| 869 | size -= block_len; |
| 870 | qemu_put_buffer(f, buf, block_len); |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | const VMStateInfo vmstate_info_unused_buffer = { |
| 875 | .name = "unused_buffer", |
| 876 | .get = get_unused_buffer, |
| 877 | .put = put_unused_buffer, |
| 878 | }; |
| 879 | |
| 880 | /* bitmaps (as defined by bitmap.h). Note that size here is the size |
| 881 | * of the bitmap in bits. The on-the-wire format of a bitmap is 64 |
| 882 | * bit words with the bits in big endian order. The in-memory format |
| 883 | * is an array of 'unsigned long', which may be either 32 or 64 bits. |
| 884 | */ |
| 885 | /* This is the number of 64 bit words sent over the wire */ |
| 886 | #define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64) |
| 887 | static int get_bitmap(QEMUFile *f, void *pv, size_t size) |
| 888 | { |
| 889 | unsigned long *bmp = pv; |
| 890 | int i, idx = 0; |
| 891 | for (i = 0; i < BITS_TO_U64S(size); i++) { |
| 892 | uint64_t w = qemu_get_be64(f); |
| 893 | bmp[idx++] = w; |
| 894 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { |
| 895 | bmp[idx++] = w >> 32; |
| 896 | } |
| 897 | } |
| 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | static void put_bitmap(QEMUFile *f, void *pv, size_t size) |
| 902 | { |
| 903 | unsigned long *bmp = pv; |
| 904 | int i, idx = 0; |
| 905 | for (i = 0; i < BITS_TO_U64S(size); i++) { |
| 906 | uint64_t w = bmp[idx++]; |
| 907 | if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) { |
| 908 | w |= ((uint64_t)bmp[idx++]) << 32; |
| 909 | } |
| 910 | qemu_put_be64(f, w); |
| 911 | } |
| 912 | } |
| 913 | |
| 914 | const VMStateInfo vmstate_info_bitmap = { |
| 915 | .name = "bitmap", |
| 916 | .get = get_bitmap, |
| 917 | .put = put_bitmap, |
| 918 | }; |