git.oblomov.eu Git - linux-2.6/blob - drivers/acpi/acpica/exresop.c

   1
   2 /******************************************************************************
   3  *
   4  * Module Name: exresop - AML Interpreter operand/object resolution
   5  *
   6  *****************************************************************************/
   7
   8 /*
   9  * Copyright (C) 2000 - 2008, Intel Corp.
  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 "accommon.h"
  47 #include "amlcode.h"
  48 #include "acparser.h"
  49 #include "acinterp.h"
  50 #include "acnamesp.h"
  51
  52 #define _COMPONENT          ACPI_EXECUTER
  53 ACPI_MODULE_NAME("exresop")
  54
  55 /* Local prototypes */
  56 static acpi_status
  57 acpi_ex_check_object_type(acpi_object_type type_needed,
  58                           acpi_object_type this_type, void *object);
  59
  60 /*******************************************************************************
  61  *
  62  * FUNCTION:    acpi_ex_check_object_type
  63  *
  64  * PARAMETERS:  type_needed         Object type needed
  65  *              this_type           Actual object type
  66  *              Object              Object pointer
  67  *
  68  * RETURN:      Status
  69  *
  70  * DESCRIPTION: Check required type against actual type
  71  *
  72  ******************************************************************************/
  73
  74 static acpi_status
  75 acpi_ex_check_object_type(acpi_object_type type_needed,
  76                           acpi_object_type this_type, void *object)
  77 {
  78         ACPI_FUNCTION_ENTRY();
  79
  80         if (type_needed == ACPI_TYPE_ANY) {
  81
  82                 /* All types OK, so we don't perform any typechecks */
  83
  84                 return (AE_OK);
  85         }
  86
  87         if (type_needed == ACPI_TYPE_LOCAL_REFERENCE) {
  88                 /*
  89                  * Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
  90                  * objects and thus allow them to be targets.  (As per the ACPI
  91                  * specification, a store to a constant is a noop.)
  92                  */
  93                 if ((this_type == ACPI_TYPE_INTEGER) &&
  94                     (((union acpi_operand_object *)object)->common.
  95                      flags & AOPOBJ_AML_CONSTANT)) {
  96                         return (AE_OK);
  97                 }
  98         }
  99
 100         if (type_needed != this_type) {
 101                 ACPI_ERROR((AE_INFO,
 102                             "Needed type [%s], found [%s] %p",
 103                             acpi_ut_get_type_name(type_needed),
 104                             acpi_ut_get_type_name(this_type), object));
 105
 106                 return (AE_AML_OPERAND_TYPE);
 107         }
 108
 109         return (AE_OK);
 110 }
 111
 112 /*******************************************************************************
 113  *
 114  * FUNCTION:    acpi_ex_resolve_operands
 115  *
 116  * PARAMETERS:  Opcode              - Opcode being interpreted
 117  *              stack_ptr           - Pointer to the operand stack to be
 118  *                                    resolved
 119  *              walk_state          - Current state
 120  *
 121  * RETURN:      Status
 122  *
 123  * DESCRIPTION: Convert multiple input operands to the types required by the
 124  *              target operator.
 125  *
 126  *      Each 5-bit group in arg_types represents one required
 127  *      operand and indicates the required Type. The corresponding operand
 128  *      will be converted to the required type if possible, otherwise we
 129  *      abort with an exception.
 130  *
 131  ******************************************************************************/
 132
 133 acpi_status
 134 acpi_ex_resolve_operands(u16 opcode,
 135                          union acpi_operand_object ** stack_ptr,
 136                          struct acpi_walk_state * walk_state)
 137 {
 138         union acpi_operand_object *obj_desc;
 139         acpi_status status = AE_OK;
 140         u8 object_type;
 141         u32 arg_types;
 142         const struct acpi_opcode_info *op_info;
 143         u32 this_arg_type;
 144         acpi_object_type type_needed;
 145         u16 target_op = 0;
 146
 147         ACPI_FUNCTION_TRACE_U32(ex_resolve_operands, opcode);
 148
 149         op_info = acpi_ps_get_opcode_info(opcode);
 150         if (op_info->class == AML_CLASS_UNKNOWN) {
 151                 return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 152         }
 153
 154         arg_types = op_info->runtime_args;
 155         if (arg_types == ARGI_INVALID_OPCODE) {
 156                 ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", opcode));
 157
 158                 return_ACPI_STATUS(AE_AML_INTERNAL);
 159         }
 160
 161         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 162                           "Opcode %X [%s] RequiredOperandTypes=%8.8X\n",
 163                           opcode, op_info->name, arg_types));
 164
 165         /*
 166          * Normal exit is with (arg_types == 0) at end of argument list.
 167          * Function will return an exception from within the loop upon
 168          * finding an entry which is not (or cannot be converted
 169          * to) the required type; if stack underflows; or upon
 170          * finding a NULL stack entry (which should not happen).
 171          */
 172         while (GET_CURRENT_ARG_TYPE(arg_types)) {
 173                 if (!stack_ptr || !*stack_ptr) {
 174                         ACPI_ERROR((AE_INFO, "Null stack entry at %p",
 175                                     stack_ptr));
 176
 177                         return_ACPI_STATUS(AE_AML_INTERNAL);
 178                 }
 179
 180                 /* Extract useful items */
 181
 182                 obj_desc = *stack_ptr;
 183
 184                 /* Decode the descriptor type */
 185
 186                 switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
 187                 case ACPI_DESC_TYPE_NAMED:
 188
 189                         /* Namespace Node */
 190
 191                         object_type =
 192                             ((struct acpi_namespace_node *)obj_desc)->type;
 193
 194                         /*
 195                          * Resolve an alias object. The construction of these objects
 196                          * guarantees that there is only one level of alias indirection;
 197                          * thus, the attached object is always the aliased namespace node
 198                          */
 199                         if (object_type == ACPI_TYPE_LOCAL_ALIAS) {
 200                                 obj_desc =
 201                                     acpi_ns_get_attached_object((struct
 202                                                                  acpi_namespace_node
 203                                                                  *)obj_desc);
 204                                 *stack_ptr = obj_desc;
 205                                 object_type =
 206                                     ((struct acpi_namespace_node *)obj_desc)->
 207                                     type;
 208                         }
 209                         break;
 210
 211                 case ACPI_DESC_TYPE_OPERAND:
 212
 213                         /* ACPI internal object */
 214
 215                         object_type = ACPI_GET_OBJECT_TYPE(obj_desc);
 216
 217                         /* Check for bad acpi_object_type */
 218
 219                         if (!acpi_ut_valid_object_type(object_type)) {
 220                                 ACPI_ERROR((AE_INFO,
 221                                             "Bad operand object type [%X]",
 222                                             object_type));
 223
 224                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 225                         }
 226
 227                         if (object_type == (u8) ACPI_TYPE_LOCAL_REFERENCE) {
 228
 229                                 /* Validate the Reference */
 230
 231                                 switch (obj_desc->reference.class) {
 232                                 case ACPI_REFCLASS_DEBUG:
 233
 234                                         target_op = AML_DEBUG_OP;
 235
 236                                         /*lint -fallthrough */
 237
 238                                 case ACPI_REFCLASS_ARG:
 239                                 case ACPI_REFCLASS_LOCAL:
 240                                 case ACPI_REFCLASS_INDEX:
 241                                 case ACPI_REFCLASS_REFOF:
 242                                 case ACPI_REFCLASS_TABLE:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
 243                                 case ACPI_REFCLASS_NAME:        /* Reference to a named object */
 244
 245                                         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 246                                                           "Operand is a Reference, Class [%s] %2.2X\n",
 247                                                           acpi_ut_get_reference_name
 248                                                           (obj_desc),
 249                                                           obj_desc->reference.
 250                                                           class));
 251                                         break;
 252
 253                                 default:
 254
 255                                         ACPI_ERROR((AE_INFO,
 256                                                     "Unknown Reference Class %2.2X in %p",
 257                                                     obj_desc->reference.class,
 258                                                     obj_desc));
 259
 260                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 261                                 }
 262                         }
 263                         break;
 264
 265                 default:
 266
 267                         /* Invalid descriptor */
 268
 269                         ACPI_ERROR((AE_INFO, "Invalid descriptor %p [%s]",
 270                                     obj_desc,
 271                                     acpi_ut_get_descriptor_name(obj_desc)));
 272
 273                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 274                 }
 275
 276                 /* Get one argument type, point to the next */
 277
 278                 this_arg_type = GET_CURRENT_ARG_TYPE(arg_types);
 279                 INCREMENT_ARG_LIST(arg_types);
 280
 281                 /*
 282                  * Handle cases where the object does not need to be
 283                  * resolved to a value
 284                  */
 285                 switch (this_arg_type) {
 286                 case ARGI_REF_OR_STRING:        /* Can be a String or Reference */
 287
 288                         if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 289                              ACPI_DESC_TYPE_OPERAND)
 290                             && (ACPI_GET_OBJECT_TYPE(obj_desc) ==
 291                                 ACPI_TYPE_STRING)) {
 292                                 /*
 293                                  * String found - the string references a named object and
 294                                  * must be resolved to a node
 295                                  */
 296                                 goto next_operand;
 297                         }
 298
 299                         /*
 300                          * Else not a string - fall through to the normal Reference
 301                          * case below
 302                          */
 303                         /*lint -fallthrough */
 304
 305                 case ARGI_REFERENCE:    /* References: */
 306                 case ARGI_INTEGER_REF:
 307                 case ARGI_OBJECT_REF:
 308                 case ARGI_DEVICE_REF:
 309                 case ARGI_TARGETREF:    /* Allows implicit conversion rules before store */
 310                 case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
 311                 case ARGI_SIMPLE_TARGET:        /* Name, Local, or Arg - no implicit conversion  */
 312
 313                         /*
 314                          * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
 315                          * A Namespace Node is OK as-is
 316                          */
 317                         if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 318                             ACPI_DESC_TYPE_NAMED) {
 319                                 goto next_operand;
 320                         }
 321
 322                         status =
 323                             acpi_ex_check_object_type(ACPI_TYPE_LOCAL_REFERENCE,
 324                                                       object_type, obj_desc);
 325                         if (ACPI_FAILURE(status)) {
 326                                 return_ACPI_STATUS(status);
 327                         }
 328                         goto next_operand;
 329
 330                 case ARGI_DATAREFOBJ:   /* Store operator only */
 331
 332                         /*
 333                          * We don't want to resolve index_op reference objects during
 334                          * a store because this would be an implicit de_ref_of operation.
 335                          * Instead, we just want to store the reference object.
 336                          * -- All others must be resolved below.
 337                          */
 338                         if ((opcode == AML_STORE_OP) &&
 339                             (ACPI_GET_OBJECT_TYPE(*stack_ptr) ==
 340                              ACPI_TYPE_LOCAL_REFERENCE)
 341                             && ((*stack_ptr)->reference.class == ACPI_REFCLASS_INDEX)) {
 342                                 goto next_operand;
 343                         }
 344                         break;
 345
 346                 default:
 347                         /* All cases covered above */
 348                         break;
 349                 }
 350
 351                 /*
 352                  * Resolve this object to a value
 353                  */
 354                 status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
 355                 if (ACPI_FAILURE(status)) {
 356                         return_ACPI_STATUS(status);
 357                 }
 358
 359                 /* Get the resolved object */
 360
 361                 obj_desc = *stack_ptr;
 362
 363                 /*
 364                  * Check the resulting object (value) type
 365                  */
 366                 switch (this_arg_type) {
 367                         /*
 368                          * For the simple cases, only one type of resolved object
 369                          * is allowed
 370                          */
 371                 case ARGI_MUTEX:
 372
 373                         /* Need an operand of type ACPI_TYPE_MUTEX */
 374
 375                         type_needed = ACPI_TYPE_MUTEX;
 376                         break;
 377
 378                 case ARGI_EVENT:
 379
 380                         /* Need an operand of type ACPI_TYPE_EVENT */
 381
 382                         type_needed = ACPI_TYPE_EVENT;
 383                         break;
 384
 385                 case ARGI_PACKAGE:      /* Package */
 386
 387                         /* Need an operand of type ACPI_TYPE_PACKAGE */
 388
 389                         type_needed = ACPI_TYPE_PACKAGE;
 390                         break;
 391
 392                 case ARGI_ANYTYPE:
 393
 394                         /* Any operand type will do */
 395
 396                         type_needed = ACPI_TYPE_ANY;
 397                         break;
 398
 399                 case ARGI_DDBHANDLE:
 400
 401                         /* Need an operand of type ACPI_TYPE_DDB_HANDLE */
 402
 403                         type_needed = ACPI_TYPE_LOCAL_REFERENCE;
 404                         break;
 405
 406                         /*
 407                          * The more complex cases allow multiple resolved object types
 408                          */
 409                 case ARGI_INTEGER:
 410
 411                         /*
 412                          * Need an operand of type ACPI_TYPE_INTEGER,
 413                          * But we can implicitly convert from a STRING or BUFFER
 414                          * Aka - "Implicit Source Operand Conversion"
 415                          */
 416                         status =
 417                             acpi_ex_convert_to_integer(obj_desc, stack_ptr, 16);
 418                         if (ACPI_FAILURE(status)) {
 419                                 if (status == AE_TYPE) {
 420                                         ACPI_ERROR((AE_INFO,
 421                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 422                                                     acpi_ut_get_object_type_name
 423                                                     (obj_desc), obj_desc));
 424
 425                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 426                                 }
 427
 428                                 return_ACPI_STATUS(status);
 429                         }
 430
 431                         if (obj_desc != *stack_ptr) {
 432                                 acpi_ut_remove_reference(obj_desc);
 433                         }
 434                         goto next_operand;
 435
 436                 case ARGI_BUFFER:
 437
 438                         /*
 439                          * Need an operand of type ACPI_TYPE_BUFFER,
 440                          * But we can implicitly convert from a STRING or INTEGER
 441                          * Aka - "Implicit Source Operand Conversion"
 442                          */
 443                         status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
 444                         if (ACPI_FAILURE(status)) {
 445                                 if (status == AE_TYPE) {
 446                                         ACPI_ERROR((AE_INFO,
 447                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 448                                                     acpi_ut_get_object_type_name
 449                                                     (obj_desc), obj_desc));
 450
 451                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 452                                 }
 453
 454                                 return_ACPI_STATUS(status);
 455                         }
 456
 457                         if (obj_desc != *stack_ptr) {
 458                                 acpi_ut_remove_reference(obj_desc);
 459                         }
 460                         goto next_operand;
 461
 462                 case ARGI_STRING:
 463
 464                         /*
 465                          * Need an operand of type ACPI_TYPE_STRING,
 466                          * But we can implicitly convert from a BUFFER or INTEGER
 467                          * Aka - "Implicit Source Operand Conversion"
 468                          */
 469                         status = acpi_ex_convert_to_string(obj_desc, stack_ptr,
 470                                                            ACPI_IMPLICIT_CONVERT_HEX);
 471                         if (ACPI_FAILURE(status)) {
 472                                 if (status == AE_TYPE) {
 473                                         ACPI_ERROR((AE_INFO,
 474                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 475                                                     acpi_ut_get_object_type_name
 476                                                     (obj_desc), obj_desc));
 477
 478                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 479                                 }
 480
 481                                 return_ACPI_STATUS(status);
 482                         }
 483
 484                         if (obj_desc != *stack_ptr) {
 485                                 acpi_ut_remove_reference(obj_desc);
 486                         }
 487                         goto next_operand;
 488
 489                 case ARGI_COMPUTEDATA:
 490
 491                         /* Need an operand of type INTEGER, STRING or BUFFER */
 492
 493                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 494                         case ACPI_TYPE_INTEGER:
 495                         case ACPI_TYPE_STRING:
 496                         case ACPI_TYPE_BUFFER:
 497
 498                                 /* Valid operand */
 499                                 break;
 500
 501                         default:
 502                                 ACPI_ERROR((AE_INFO,
 503                                             "Needed [Integer/String/Buffer], found [%s] %p",
 504                                             acpi_ut_get_object_type_name
 505                                             (obj_desc), obj_desc));
 506
 507                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 508                         }
 509                         goto next_operand;
 510
 511                 case ARGI_BUFFER_OR_STRING:
 512
 513                         /* Need an operand of type STRING or BUFFER */
 514
 515                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 516                         case ACPI_TYPE_STRING:
 517                         case ACPI_TYPE_BUFFER:
 518
 519                                 /* Valid operand */
 520                                 break;
 521
 522                         case ACPI_TYPE_INTEGER:
 523
 524                                 /* Highest priority conversion is to type Buffer */
 525
 526                                 status =
 527                                     acpi_ex_convert_to_buffer(obj_desc,
 528                                                               stack_ptr);
 529                                 if (ACPI_FAILURE(status)) {
 530                                         return_ACPI_STATUS(status);
 531                                 }
 532
 533                                 if (obj_desc != *stack_ptr) {
 534                                         acpi_ut_remove_reference(obj_desc);
 535                                 }
 536                                 break;
 537
 538                         default:
 539                                 ACPI_ERROR((AE_INFO,
 540                                             "Needed [Integer/String/Buffer], found [%s] %p",
 541                                             acpi_ut_get_object_type_name
 542                                             (obj_desc), obj_desc));
 543
 544                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 545                         }
 546                         goto next_operand;
 547
 548                 case ARGI_DATAOBJECT:
 549                         /*
 550                          * ARGI_DATAOBJECT is only used by the size_of operator.
 551                          * Need a buffer, string, package, or ref_of reference.
 552                          *
 553                          * The only reference allowed here is a direct reference to
 554                          * a namespace node.
 555                          */
 556                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 557                         case ACPI_TYPE_PACKAGE:
 558                         case ACPI_TYPE_STRING:
 559                         case ACPI_TYPE_BUFFER:
 560                         case ACPI_TYPE_LOCAL_REFERENCE:
 561
 562                                 /* Valid operand */
 563                                 break;
 564
 565                         default:
 566                                 ACPI_ERROR((AE_INFO,
 567                                             "Needed [Buffer/String/Package/Reference], found [%s] %p",
 568                                             acpi_ut_get_object_type_name
 569                                             (obj_desc), obj_desc));
 570
 571                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 572                         }
 573                         goto next_operand;
 574
 575                 case ARGI_COMPLEXOBJ:
 576
 577                         /* Need a buffer or package or (ACPI 2.0) String */
 578
 579                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 580                         case ACPI_TYPE_PACKAGE:
 581                         case ACPI_TYPE_STRING:
 582                         case ACPI_TYPE_BUFFER:
 583
 584                                 /* Valid operand */
 585                                 break;
 586
 587                         default:
 588                                 ACPI_ERROR((AE_INFO,
 589                                             "Needed [Buffer/String/Package], found [%s] %p",
 590                                             acpi_ut_get_object_type_name
 591                                             (obj_desc), obj_desc));
 592
 593                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 594                         }
 595                         goto next_operand;
 596
 597                 case ARGI_REGION_OR_BUFFER:     /* Used by Load() only */
 598
 599                         /* Need an operand of type REGION or a BUFFER (which could be a resolved region field) */
 600
 601                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 602                         case ACPI_TYPE_BUFFER:
 603                         case ACPI_TYPE_REGION:
 604
 605                                 /* Valid operand */
 606                                 break;
 607
 608                         default:
 609                                 ACPI_ERROR((AE_INFO,
 610                                             "Needed [Region/Buffer], found [%s] %p",
 611                                             acpi_ut_get_object_type_name
 612                                             (obj_desc), obj_desc));
 613
 614                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 615                         }
 616                         goto next_operand;
 617
 618                 case ARGI_DATAREFOBJ:
 619
 620                         /* Used by the Store() operator only */
 621
 622                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 623                         case ACPI_TYPE_INTEGER:
 624                         case ACPI_TYPE_PACKAGE:
 625                         case ACPI_TYPE_STRING:
 626                         case ACPI_TYPE_BUFFER:
 627                         case ACPI_TYPE_BUFFER_FIELD:
 628                         case ACPI_TYPE_LOCAL_REFERENCE:
 629                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 630                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 631                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 632                         case ACPI_TYPE_DDB_HANDLE:
 633
 634                                 /* Valid operand */
 635                                 break;
 636
 637                         default:
 638
 639                                 if (acpi_gbl_enable_interpreter_slack) {
 640                                         /*
 641                                          * Enable original behavior of Store(), allowing any and all
 642                                          * objects as the source operand.  The ACPI spec does not
 643                                          * allow this, however.
 644                                          */
 645                                         break;
 646                                 }
 647
 648                                 if (target_op == AML_DEBUG_OP) {
 649
 650                                         /* Allow store of any object to the Debug object */
 651
 652                                         break;
 653                                 }
 654
 655                                 ACPI_ERROR((AE_INFO,
 656                                             "Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p",
 657                                             acpi_ut_get_object_type_name
 658                                             (obj_desc), obj_desc));
 659
 660                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 661                         }
 662                         goto next_operand;
 663
 664                 default:
 665
 666                         /* Unknown type */
 667
 668                         ACPI_ERROR((AE_INFO,
 669                                     "Internal - Unknown ARGI (required operand) type %X",
 670                                     this_arg_type));
 671
 672                         return_ACPI_STATUS(AE_BAD_PARAMETER);
 673                 }
 674
 675                 /*
 676                  * Make sure that the original object was resolved to the
 677                  * required object type (Simple cases only).
 678                  */
 679                 status = acpi_ex_check_object_type(type_needed,
 680                                                    ACPI_GET_OBJECT_TYPE
 681                                                    (*stack_ptr), *stack_ptr);
 682                 if (ACPI_FAILURE(status)) {
 683                         return_ACPI_STATUS(status);
 684                 }
 685
 686               next_operand:
 687                 /*
 688                  * If more operands needed, decrement stack_ptr to point
 689                  * to next operand on stack
 690                  */
 691                 if (GET_CURRENT_ARG_TYPE(arg_types)) {
 692                         stack_ptr--;
 693                 }
 694         }
 695
 696         ACPI_DUMP_OPERANDS(walk_state->operands,
 697                            acpi_ps_get_opcode_name(opcode),
 698                            walk_state->num_operands);
 699
 700         return_ACPI_STATUS(status);
 701 }