drivers/acpi/executer/exstore.c

   1
   2 /******************************************************************************
   3  *
   4  * Module Name: exstore - AML Interpreter object store support
   5  *
   6  *****************************************************************************/
   7
   8 /*
   9  * Copyright (C) 2000 - 2007, R. Byron Moore
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions, and the following disclaimer,
  17  *    without modification.
  18  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  19  *    substantially similar to the "NO WARRANTY" disclaimer below
  20  *    ("Disclaimer") and any redistribution must be conditioned upon
  21  *    including a substantially similar Disclaimer requirement for further
  22  *    binary redistribution.
  23  * 3. Neither the names of the above-listed copyright holders nor the names
  24  *    of any contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * Alternatively, this software may be distributed under the terms of the
  28  * GNU General Public License ("GPL") version 2 as published by the Free
  29  * Software Foundation.
  30  *
  31  * NO WARRANTY
  32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  35  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  36  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  40  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  41  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  42  * POSSIBILITY OF SUCH DAMAGES.
  43  */
  44
  45 #include <acpi/acpi.h>
  46 #include <acpi/acdispat.h>
  47 #include <acpi/acinterp.h>
  48 #include <acpi/amlcode.h>
  49 #include <acpi/acnamesp.h>
  50 #include <acpi/acparser.h>
  51
  52 #define _COMPONENT          ACPI_EXECUTER
  53 ACPI_MODULE_NAME("exstore")
  54
  55 /* Local prototypes */
  56 static void
  57 acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
  58                         u32 level, u32 index);
  59
  60 static acpi_status
  61 acpi_ex_store_object_to_index(union acpi_operand_object *val_desc,
  62                               union acpi_operand_object *dest_desc,
  63                               struct acpi_walk_state *walk_state);
  64
  65 /*******************************************************************************
  66  *
  67  * FUNCTION:    acpi_ex_do_debug_object
  68  *
  69  * PARAMETERS:  source_desc         - Value to be stored
  70  *              Level               - Indentation level (used for packages)
  71  *              Index               - Current package element, zero if not pkg
  72  *
  73  * RETURN:      None
  74  *
  75  * DESCRIPTION: Handles stores to the Debug Object.
  76  *
  77  ******************************************************************************/
  78
  79 static void
  80 acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
  81                         u32 level, u32 index)
  82 {
  83         u32 i;
  84
  85         ACPI_FUNCTION_TRACE_PTR(ex_do_debug_object, source_desc);
  86
  87         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %*s",
  88                               level, " "));
  89
  90         /* Display index for package output only */
  91
  92         if (index > 0) {
  93                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
  94                                       "(%.2u) ", index - 1));
  95         }
  96
  97         if (!source_desc) {
  98                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "<Null Object>\n"));
  99                 return_VOID;
 100         }
 101
 102         if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_OPERAND) {
 103                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: ",
 104                                       acpi_ut_get_object_type_name
 105                                       (source_desc)));
 106
 107                 if (!acpi_ut_valid_internal_object(source_desc)) {
 108                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
 109                                               "%p, Invalid Internal Object!\n",
 110                                               source_desc));
 111                         return_VOID;
 112                 }
 113         } else if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) ==
 114                    ACPI_DESC_TYPE_NAMED) {
 115                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%s: %p\n",
 116                                       acpi_ut_get_type_name(((struct
 117                                                               acpi_namespace_node
 118                                                               *)source_desc)->
 119                                                             type),
 120                                       source_desc));
 121                 return_VOID;
 122         } else {
 123                 return_VOID;
 124         }
 125
 126         /* source_desc is of type ACPI_DESC_TYPE_OPERAND */
 127
 128         switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
 129         case ACPI_TYPE_INTEGER:
 130
 131                 /* Output correct integer width */
 132
 133                 if (acpi_gbl_integer_byte_width == 4) {
 134                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
 135                                               (u32) source_desc->integer.
 136                                               value));
 137                 } else {
 138                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
 139                                               "0x%8.8X%8.8X\n",
 140                                               ACPI_FORMAT_UINT64(source_desc->
 141                                                                  integer.
 142                                                                  value)));
 143                 }
 144                 break;
 145
 146         case ACPI_TYPE_BUFFER:
 147
 148                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]\n",
 149                                       (u32) source_desc->buffer.length));
 150                 ACPI_DUMP_BUFFER(source_desc->buffer.pointer,
 151                                  (source_desc->buffer.length <
 152                                   256) ? source_desc->buffer.length : 256);
 153                 break;
 154
 155         case ACPI_TYPE_STRING:
 156
 157                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
 158                                       source_desc->string.length,
 159                                       source_desc->string.pointer));
 160                 break;
 161
 162         case ACPI_TYPE_PACKAGE:
 163
 164                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
 165                                       "[0x%.2X Elements]\n",
 166                                       source_desc->package.count));
 167
 168                 /* Output the entire contents of the package */
 169
 170                 for (i = 0; i < source_desc->package.count; i++) {
 171                         acpi_ex_do_debug_object(source_desc->package.
 172                                                 elements[i], level + 4, i + 1);
 173                 }
 174                 break;
 175
 176         case ACPI_TYPE_LOCAL_REFERENCE:
 177
 178                 if (source_desc->reference.opcode == AML_INDEX_OP) {
 179                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
 180                                               "[%s, 0x%X]\n",
 181                                               acpi_ps_get_opcode_name
 182                                               (source_desc->reference.opcode),
 183                                               source_desc->reference.offset));
 184                 } else {
 185                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s]",
 186                                               acpi_ps_get_opcode_name
 187                                               (source_desc->reference.opcode)));
 188                 }
 189
 190                 if (source_desc->reference.opcode == AML_LOAD_OP) {     /* Load and load_table */
 191                         ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
 192                                               " Table OwnerId %p\n",
 193                                               source_desc->reference.object));
 194                         break;
 195                 }
 196
 197                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "\n"));
 198                 if (source_desc->reference.object) {
 199                         if (ACPI_GET_DESCRIPTOR_TYPE
 200                             (source_desc->reference.object) ==
 201                             ACPI_DESC_TYPE_NAMED) {
 202                                 acpi_ex_do_debug_object(((struct
 203                                                           acpi_namespace_node *)
 204                                                          source_desc->reference.
 205                                                          object)->object,
 206                                                         level + 4, 0);
 207                         } else {
 208                                 acpi_ex_do_debug_object(source_desc->reference.
 209                                                         object, level + 4, 0);
 210                         }
 211                 } else if (source_desc->reference.node) {
 212                         if (ACPI_GET_DESCRIPTOR_TYPE
 213                             (source_desc->reference.node) !=
 214                             ACPI_DESC_TYPE_NAMED) {
 215                                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
 216                                                       " %p - Not a valid namespace node\n",
 217                                                       source_desc->reference.
 218                                                       node));
 219                         } else {
 220                                 acpi_ex_do_debug_object((source_desc->reference.
 221                                                          node)->object,
 222                                                         level + 4, 0);
 223                         }
 224                 }
 225                 break;
 226
 227         default:
 228
 229                 ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "%p %s\n",
 230                                       source_desc,
 231                                       acpi_ut_get_object_type_name
 232                                       (source_desc)));
 233                 break;
 234         }
 235
 236         ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "\n"));
 237         return_VOID;
 238 }
 239
 240 /*******************************************************************************
 241  *
 242  * FUNCTION:    acpi_ex_store
 243  *
 244  * PARAMETERS:  *source_desc        - Value to be stored
 245  *              *dest_desc          - Where to store it.  Must be an NS node
 246  *                                    or an union acpi_operand_object of type
 247  *                                    Reference;
 248  *              walk_state          - Current walk state
 249  *
 250  * RETURN:      Status
 251  *
 252  * DESCRIPTION: Store the value described by source_desc into the location
 253  *              described by dest_desc. Called by various interpreter
 254  *              functions to store the result of an operation into
 255  *              the destination operand -- not just simply the actual "Store"
 256  *              ASL operator.
 257  *
 258  ******************************************************************************/
 259
 260 acpi_status
 261 acpi_ex_store(union acpi_operand_object *source_desc,
 262               union acpi_operand_object *dest_desc,
 263               struct acpi_walk_state *walk_state)
 264 {
 265         acpi_status status = AE_OK;
 266         union acpi_operand_object *ref_desc = dest_desc;
 267
 268         ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc);
 269
 270         /* Validate parameters */
 271
 272         if (!source_desc || !dest_desc) {
 273                 ACPI_ERROR((AE_INFO, "Null parameter"));
 274                 return_ACPI_STATUS(AE_AML_NO_OPERAND);
 275         }
 276
 277         /* dest_desc can be either a namespace node or an ACPI object */
 278
 279         if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) {
 280                 /*
 281                  * Dest is a namespace node,
 282                  * Storing an object into a Named node.
 283                  */
 284                 status = acpi_ex_store_object_to_node(source_desc,
 285                                                       (struct
 286                                                        acpi_namespace_node *)
 287                                                       dest_desc, walk_state,
 288                                                       ACPI_IMPLICIT_CONVERSION);
 289
 290                 return_ACPI_STATUS(status);
 291         }
 292
 293         /* Destination object must be a Reference or a Constant object */
 294
 295         switch (ACPI_GET_OBJECT_TYPE(dest_desc)) {
 296         case ACPI_TYPE_LOCAL_REFERENCE:
 297                 break;
 298
 299         case ACPI_TYPE_INTEGER:
 300
 301                 /* Allow stores to Constants -- a Noop as per ACPI spec */
 302
 303                 if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
 304                         return_ACPI_STATUS(AE_OK);
 305                 }
 306
 307                 /*lint -fallthrough */
 308
 309         default:
 310
 311                 /* Destination is not a Reference object */
 312
 313                 ACPI_ERROR((AE_INFO,
 314                             "Target is not a Reference or Constant object - %s [%p]",
 315                             acpi_ut_get_object_type_name(dest_desc),
 316                             dest_desc));
 317
 318                 ACPI_DUMP_STACK_ENTRY(source_desc);
 319                 ACPI_DUMP_STACK_ENTRY(dest_desc);
 320                 ACPI_DUMP_OPERANDS(&dest_desc, ACPI_IMODE_EXECUTE, "ExStore",
 321                                    2,
 322                                    "Target is not a Reference or Constant object");
 323
 324                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 325         }
 326
 327         /*
 328          * Examine the Reference opcode.  These cases are handled:
 329          *
 330          * 1) Store to Name (Change the object associated with a name)
 331          * 2) Store to an indexed area of a Buffer or Package
 332          * 3) Store to a Method Local or Arg
 333          * 4) Store to the debug object
 334          */
 335         switch (ref_desc->reference.opcode) {
 336         case AML_REF_OF_OP:
 337
 338                 /* Storing an object into a Name "container" */
 339
 340                 status = acpi_ex_store_object_to_node(source_desc,
 341                                                       ref_desc->reference.
 342                                                       object, walk_state,
 343                                                       ACPI_IMPLICIT_CONVERSION);
 344                 break;
 345
 346         case AML_INDEX_OP:
 347
 348                 /* Storing to an Index (pointer into a packager or buffer) */
 349
 350                 status =
 351                     acpi_ex_store_object_to_index(source_desc, ref_desc,
 352                                                   walk_state);
 353                 break;
 354
 355         case AML_LOCAL_OP:
 356         case AML_ARG_OP:
 357
 358                 /* Store to a method local/arg  */
 359
 360                 status =
 361                     acpi_ds_store_object_to_local(ref_desc->reference.opcode,
 362                                                   ref_desc->reference.offset,
 363                                                   source_desc, walk_state);
 364                 break;
 365
 366         case AML_DEBUG_OP:
 367
 368                 /*
 369                  * Storing to the Debug object causes the value stored to be
 370                  * displayed and otherwise has no effect -- see ACPI Specification
 371                  */
 372                 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 373                                   "**** Write to Debug Object: Object %p %s ****:\n\n",
 374                                   source_desc,
 375                                   acpi_ut_get_object_type_name(source_desc)));
 376
 377                 acpi_ex_do_debug_object(source_desc, 0, 0);
 378                 break;
 379
 380         default:
 381
 382                 ACPI_ERROR((AE_INFO, "Unknown Reference opcode %X",
 383                             ref_desc->reference.opcode));
 384                 ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_ERROR);
 385
 386                 status = AE_AML_INTERNAL;
 387                 break;
 388         }
 389
 390         return_ACPI_STATUS(status);
 391 }
 392
 393 /*******************************************************************************
 394  *
 395  * FUNCTION:    acpi_ex_store_object_to_index
 396  *
 397  * PARAMETERS:  *source_desc            - Value to be stored
 398  *              *dest_desc              - Named object to receive the value
 399  *              walk_state              - Current walk state
 400  *
 401  * RETURN:      Status
 402  *
 403  * DESCRIPTION: Store the object to indexed Buffer or Package element
 404  *
 405  ******************************************************************************/
 406
 407 static acpi_status
 408 acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
 409                               union acpi_operand_object *index_desc,
 410                               struct acpi_walk_state *walk_state)
 411 {
 412         acpi_status status = AE_OK;
 413         union acpi_operand_object *obj_desc;
 414         union acpi_operand_object *new_desc;
 415         u8 value = 0;
 416         u32 i;
 417
 418         ACPI_FUNCTION_TRACE(ex_store_object_to_index);
 419
 420         /*
 421          * Destination must be a reference pointer, and
 422          * must point to either a buffer or a package
 423          */
 424         switch (index_desc->reference.target_type) {
 425         case ACPI_TYPE_PACKAGE:
 426                 /*
 427                  * Storing to a package element. Copy the object and replace
 428                  * any existing object with the new object. No implicit
 429                  * conversion is performed.
 430                  *
 431                  * The object at *(index_desc->Reference.Where) is the
 432                  * element within the package that is to be modified.
 433                  * The parent package object is at index_desc->Reference.Object
 434                  */
 435                 obj_desc = *(index_desc->reference.where);
 436
 437                 if (ACPI_GET_OBJECT_TYPE(source_desc) ==
 438                     ACPI_TYPE_LOCAL_REFERENCE
 439                     && source_desc->reference.opcode == AML_LOAD_OP) {
 440
 441                         /* This is a DDBHandle, just add a reference to it */
 442
 443                         acpi_ut_add_reference(source_desc);
 444                         new_desc = source_desc;
 445                 } else {
 446                         /* Normal object, copy it */
 447
 448                         status =
 449                             acpi_ut_copy_iobject_to_iobject(source_desc,
 450                                                             &new_desc,
 451                                                             walk_state);
 452                         if (ACPI_FAILURE(status)) {
 453                                 return_ACPI_STATUS(status);
 454                         }
 455                 }
 456
 457                 if (obj_desc) {
 458
 459                         /* Decrement reference count by the ref count of the parent package */
 460
 461                         for (i = 0; i < ((union acpi_operand_object *)
 462                                          index_desc->reference.object)->common.
 463                              reference_count; i++) {
 464                                 acpi_ut_remove_reference(obj_desc);
 465                         }
 466                 }
 467
 468                 *(index_desc->reference.where) = new_desc;
 469
 470                 /* Increment ref count by the ref count of the parent package-1 */
 471
 472                 for (i = 1; i < ((union acpi_operand_object *)
 473                                  index_desc->reference.object)->common.
 474                      reference_count; i++) {
 475                         acpi_ut_add_reference(new_desc);
 476                 }
 477
 478                 break;
 479
 480         case ACPI_TYPE_BUFFER_FIELD:
 481
 482                 /*
 483                  * Store into a Buffer or String (not actually a real buffer_field)
 484                  * at a location defined by an Index.
 485                  *
 486                  * The first 8-bit element of the source object is written to the
 487                  * 8-bit Buffer location defined by the Index destination object,
 488                  * according to the ACPI 2.0 specification.
 489                  */
 490
 491                 /*
 492                  * Make sure the target is a Buffer or String. An error should
 493                  * not happen here, since the reference_object was constructed
 494                  * by the INDEX_OP code.
 495                  */
 496                 obj_desc = index_desc->reference.object;
 497                 if ((ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_BUFFER) &&
 498                     (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_STRING)) {
 499                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 500                 }
 501
 502                 /*
 503                  * The assignment of the individual elements will be slightly
 504                  * different for each source type.
 505                  */
 506                 switch (ACPI_GET_OBJECT_TYPE(source_desc)) {
 507                 case ACPI_TYPE_INTEGER:
 508
 509                         /* Use the least-significant byte of the integer */
 510
 511                         value = (u8) (source_desc->integer.value);
 512                         break;
 513
 514                 case ACPI_TYPE_BUFFER:
 515                 case ACPI_TYPE_STRING:
 516
 517                         /* Note: Takes advantage of common string/buffer fields */
 518
 519                         value = source_desc->buffer.pointer[0];
 520                         break;
 521
 522                 default:
 523
 524                         /* All other types are invalid */
 525
 526                         ACPI_ERROR((AE_INFO,
 527                                     "Source must be Integer/Buffer/String type, not %s",
 528                                     acpi_ut_get_object_type_name(source_desc)));
 529                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 530                 }
 531
 532                 /* Store the source value into the target buffer byte */
 533
 534                 obj_desc->buffer.pointer[index_desc->reference.offset] = value;
 535                 break;
 536
 537         default:
 538                 ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField"));
 539                 status = AE_AML_OPERAND_TYPE;
 540                 break;
 541         }
 542
 543         return_ACPI_STATUS(status);
 544 }
 545
 546 /*******************************************************************************
 547  *
 548  * FUNCTION:    acpi_ex_store_object_to_node
 549  *
 550  * PARAMETERS:  source_desc             - Value to be stored
 551  *              Node                    - Named object to receive the value
 552  *              walk_state              - Current walk state
 553  *              implicit_conversion     - Perform implicit conversion (yes/no)
 554  *
 555  * RETURN:      Status
 556  *
 557  * DESCRIPTION: Store the object to the named object.
 558  *
 559  *              The Assignment of an object to a named object is handled here
 560  *              The value passed in will replace the current value (if any)
 561  *              with the input value.
 562  *
 563  *              When storing into an object the data is converted to the
 564  *              target object type then stored in the object.  This means
 565  *              that the target object type (for an initialized target) will
 566  *              not be changed by a store operation.
 567  *
 568  *              Assumes parameters are already validated.
 569  *
 570  ******************************************************************************/
 571
 572 acpi_status
 573 acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
 574                              struct acpi_namespace_node *node,
 575                              struct acpi_walk_state *walk_state,
 576                              u8 implicit_conversion)
 577 {
 578         acpi_status status = AE_OK;
 579         union acpi_operand_object *target_desc;
 580         union acpi_operand_object *new_desc;
 581         acpi_object_type target_type;
 582
 583         ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc);
 584
 585         /* Get current type of the node, and object attached to Node */
 586
 587         target_type = acpi_ns_get_type(node);
 588         target_desc = acpi_ns_get_attached_object(node);
 589
 590         ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n",
 591                           source_desc,
 592                           acpi_ut_get_object_type_name(source_desc), node,
 593                           acpi_ut_get_type_name(target_type)));
 594
 595         /*
 596          * Resolve the source object to an actual value
 597          * (If it is a reference object)
 598          */
 599         status = acpi_ex_resolve_object(&source_desc, target_type, walk_state);
 600         if (ACPI_FAILURE(status)) {
 601                 return_ACPI_STATUS(status);
 602         }
 603
 604         /* If no implicit conversion, drop into the default case below */
 605
 606         if ((!implicit_conversion) || (walk_state->opcode == AML_COPY_OP)) {
 607
 608                 /* Force execution of default (no implicit conversion) */
 609
 610                 target_type = ACPI_TYPE_ANY;
 611         }
 612
 613         /* Do the actual store operation */
 614
 615         switch (target_type) {
 616         case ACPI_TYPE_BUFFER_FIELD:
 617         case ACPI_TYPE_LOCAL_REGION_FIELD:
 618         case ACPI_TYPE_LOCAL_BANK_FIELD:
 619         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 620
 621                 /* For fields, copy the source data to the target field. */
 622
 623                 status = acpi_ex_write_data_to_field(source_desc, target_desc,
 624                                                      &walk_state->result_obj);
 625                 break;
 626
 627         case ACPI_TYPE_INTEGER:
 628         case ACPI_TYPE_STRING:
 629         case ACPI_TYPE_BUFFER:
 630
 631                 /*
 632                  * These target types are all of type Integer/String/Buffer, and
 633                  * therefore support implicit conversion before the store.
 634                  *
 635                  * Copy and/or convert the source object to a new target object
 636                  */
 637                 status =
 638                     acpi_ex_store_object_to_object(source_desc, target_desc,
 639                                                    &new_desc, walk_state);
 640                 if (ACPI_FAILURE(status)) {
 641                         return_ACPI_STATUS(status);
 642                 }
 643
 644                 if (new_desc != target_desc) {
 645                         /*
 646                          * Store the new new_desc as the new value of the Name, and set
 647                          * the Name's type to that of the value being stored in it.
 648                          * source_desc reference count is incremented by attach_object.
 649                          *
 650                          * Note: This may change the type of the node if an explicit store
 651                          * has been performed such that the node/object type has been
 652                          * changed.
 653                          */
 654                         status =
 655                             acpi_ns_attach_object(node, new_desc,
 656                                                   new_desc->common.type);
 657
 658                         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 659                                           "Store %s into %s via Convert/Attach\n",
 660                                           acpi_ut_get_object_type_name
 661                                           (source_desc),
 662                                           acpi_ut_get_object_type_name
 663                                           (new_desc)));
 664                 }
 665                 break;
 666
 667         default:
 668
 669                 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 670                                   "Storing %s (%p) directly into node (%p) with no implicit conversion\n",
 671                                   acpi_ut_get_object_type_name(source_desc),
 672                                   source_desc, node));
 673
 674                 /* No conversions for all other types.  Just attach the source object */
 675
 676                 status = acpi_ns_attach_object(node, source_desc,
 677                                                ACPI_GET_OBJECT_TYPE
 678                                                (source_desc));
 679                 break;
 680         }
 681
 682         return_ACPI_STATUS(status);
 683 }