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

   1
   2 /******************************************************************************
   3  *
   4  * Module Name: exresop - AML Interpreter operand/object resolution
   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/amlcode.h>
  47 #include <acpi/acparser.h>
  48 #include <acpi/acinterp.h>
  49 #include <acpi/acnamesp.h>
  50
  51 #define _COMPONENT          ACPI_EXECUTER
  52 ACPI_MODULE_NAME("exresop")
  53
  54 /* Local prototypes */
  55 static acpi_status
  56 acpi_ex_check_object_type(acpi_object_type type_needed,
  57                           acpi_object_type this_type, void *object);
  58
  59 /*******************************************************************************
  60  *
  61  * FUNCTION:    acpi_ex_check_object_type
  62  *
  63  * PARAMETERS:  type_needed         Object type needed
  64  *              this_type           Actual object type
  65  *              Object              Object pointer
  66  *
  67  * RETURN:      Status
  68  *
  69  * DESCRIPTION: Check required type against actual type
  70  *
  71  ******************************************************************************/
  72
  73 static acpi_status
  74 acpi_ex_check_object_type(acpi_object_type type_needed,
  75                           acpi_object_type this_type, void *object)
  76 {
  77         ACPI_FUNCTION_ENTRY();
  78
  79         if (type_needed == ACPI_TYPE_ANY) {
  80
  81                 /* All types OK, so we don't perform any typechecks */
  82
  83                 return (AE_OK);
  84         }
  85
  86         if (type_needed == ACPI_TYPE_LOCAL_REFERENCE) {
  87                 /*
  88                  * Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
  89                  * objects and thus allow them to be targets.  (As per the ACPI
  90                  * specification, a store to a constant is a noop.)
  91                  */
  92                 if ((this_type == ACPI_TYPE_INTEGER) &&
  93                     (((union acpi_operand_object *)object)->common.
  94                      flags & AOPOBJ_AML_CONSTANT)) {
  95                         return (AE_OK);
  96                 }
  97         }
  98
  99         if (type_needed != this_type) {
 100                 ACPI_ERROR((AE_INFO,
 101                             "Needed type [%s], found [%s] %p",
 102                             acpi_ut_get_type_name(type_needed),
 103                             acpi_ut_get_type_name(this_type), object));
 104
 105                 return (AE_AML_OPERAND_TYPE);
 106         }
 107
 108         return (AE_OK);
 109 }
 110
 111 /*******************************************************************************
 112  *
 113  * FUNCTION:    acpi_ex_resolve_operands
 114  *
 115  * PARAMETERS:  Opcode              - Opcode being interpreted
 116  *              stack_ptr           - Pointer to the operand stack to be
 117  *                                    resolved
 118  *              walk_state          - Current state
 119  *
 120  * RETURN:      Status
 121  *
 122  * DESCRIPTION: Convert multiple input operands to the types required by the
 123  *              target operator.
 124  *
 125  *      Each 5-bit group in arg_types represents one required
 126  *      operand and indicates the required Type. The corresponding operand
 127  *      will be converted to the required type if possible, otherwise we
 128  *      abort with an exception.
 129  *
 130  ******************************************************************************/
 131
 132 acpi_status
 133 acpi_ex_resolve_operands(u16 opcode,
 134                          union acpi_operand_object ** stack_ptr,
 135                          struct acpi_walk_state * walk_state)
 136 {
 137         union acpi_operand_object *obj_desc;
 138         acpi_status status = AE_OK;
 139         u8 object_type;
 140         void *temp_node;
 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                                 /* Decode the Reference */
 230
 231                                 op_info = acpi_ps_get_opcode_info(opcode);
 232                                 if (op_info->class == AML_CLASS_UNKNOWN) {
 233                                         return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 234                                 }
 235
 236                                 switch (obj_desc->reference.opcode) {
 237                                 case AML_DEBUG_OP:
 238                                         target_op = AML_DEBUG_OP;
 239
 240                                         /*lint -fallthrough */
 241
 242                                 case AML_NAME_OP:
 243                                 case AML_INDEX_OP:
 244                                 case AML_REF_OF_OP:
 245                                 case AML_ARG_OP:
 246                                 case AML_LOCAL_OP:
 247                                 case AML_LOAD_OP:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
 248                                 case AML_INT_NAMEPATH_OP:       /* Reference to a named object */
 249
 250                                         ACPI_DEBUG_ONLY_MEMBERS(ACPI_DEBUG_PRINT
 251                                                                 ((ACPI_DB_EXEC,
 252                                                                   "Operand is a Reference, RefOpcode [%s]\n",
 253                                                                   (acpi_ps_get_opcode_info
 254                                                                    (obj_desc->
 255                                                                     reference.
 256                                                                     opcode))->
 257                                                                   name)));
 258                                         break;
 259
 260                                 default:
 261                                         ACPI_ERROR((AE_INFO,
 262                                                     "Operand is a Reference, Unknown Reference Opcode: %X",
 263                                                     obj_desc->reference.
 264                                                     opcode));
 265
 266                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 267                                 }
 268                         }
 269                         break;
 270
 271                 default:
 272
 273                         /* Invalid descriptor */
 274
 275                         ACPI_ERROR((AE_INFO,
 276                                     "Invalid descriptor %p [%s]",
 277                                     obj_desc,
 278                                     acpi_ut_get_descriptor_name(obj_desc)));
 279
 280                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 281                 }
 282
 283                 /* Get one argument type, point to the next */
 284
 285                 this_arg_type = GET_CURRENT_ARG_TYPE(arg_types);
 286                 INCREMENT_ARG_LIST(arg_types);
 287
 288                 /*
 289                  * Handle cases where the object does not need to be
 290                  * resolved to a value
 291                  */
 292                 switch (this_arg_type) {
 293                 case ARGI_REF_OR_STRING:        /* Can be a String or Reference */
 294
 295                         if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 296                              ACPI_DESC_TYPE_OPERAND)
 297                             && (ACPI_GET_OBJECT_TYPE(obj_desc) ==
 298                                 ACPI_TYPE_STRING)) {
 299                                 /*
 300                                  * String found - the string references a named object and
 301                                  * must be resolved to a node
 302                                  */
 303                                 goto next_operand;
 304                         }
 305
 306                         /*
 307                          * Else not a string - fall through to the normal Reference
 308                          * case below
 309                          */
 310                         /*lint -fallthrough */
 311
 312                 case ARGI_REFERENCE:    /* References: */
 313                 case ARGI_INTEGER_REF:
 314                 case ARGI_OBJECT_REF:
 315                 case ARGI_DEVICE_REF:
 316                 case ARGI_TARGETREF:    /* Allows implicit conversion rules before store */
 317                 case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
 318                 case ARGI_SIMPLE_TARGET:        /* Name, Local, or Arg - no implicit conversion  */
 319
 320                         /*
 321                          * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
 322                          * A Namespace Node is OK as-is
 323                          */
 324                         if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 325                             ACPI_DESC_TYPE_NAMED) {
 326                                 goto next_operand;
 327                         }
 328
 329                         status =
 330                             acpi_ex_check_object_type(ACPI_TYPE_LOCAL_REFERENCE,
 331                                                       object_type, obj_desc);
 332                         if (ACPI_FAILURE(status)) {
 333                                 return_ACPI_STATUS(status);
 334                         }
 335
 336                         if (obj_desc->reference.opcode == AML_NAME_OP) {
 337
 338                                 /* Convert a named reference to the actual named object */
 339
 340                                 temp_node = obj_desc->reference.object;
 341                                 acpi_ut_remove_reference(obj_desc);
 342                                 (*stack_ptr) = temp_node;
 343                         }
 344                         goto next_operand;
 345
 346                 case ARGI_DATAREFOBJ:   /* Store operator only */
 347
 348                         /*
 349                          * We don't want to resolve index_op reference objects during
 350                          * a store because this would be an implicit de_ref_of operation.
 351                          * Instead, we just want to store the reference object.
 352                          * -- All others must be resolved below.
 353                          */
 354                         if ((opcode == AML_STORE_OP) &&
 355                             (ACPI_GET_OBJECT_TYPE(*stack_ptr) ==
 356                              ACPI_TYPE_LOCAL_REFERENCE)
 357                             && ((*stack_ptr)->reference.opcode ==
 358                                 AML_INDEX_OP)) {
 359                                 goto next_operand;
 360                         }
 361                         break;
 362
 363                 default:
 364                         /* All cases covered above */
 365                         break;
 366                 }
 367
 368                 /*
 369                  * Resolve this object to a value
 370                  */
 371                 status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
 372                 if (ACPI_FAILURE(status)) {
 373                         return_ACPI_STATUS(status);
 374                 }
 375
 376                 /* Get the resolved object */
 377
 378                 obj_desc = *stack_ptr;
 379
 380                 /*
 381                  * Check the resulting object (value) type
 382                  */
 383                 switch (this_arg_type) {
 384                         /*
 385                          * For the simple cases, only one type of resolved object
 386                          * is allowed
 387                          */
 388                 case ARGI_MUTEX:
 389
 390                         /* Need an operand of type ACPI_TYPE_MUTEX */
 391
 392                         type_needed = ACPI_TYPE_MUTEX;
 393                         break;
 394
 395                 case ARGI_EVENT:
 396
 397                         /* Need an operand of type ACPI_TYPE_EVENT */
 398
 399                         type_needed = ACPI_TYPE_EVENT;
 400                         break;
 401
 402                 case ARGI_PACKAGE:      /* Package */
 403
 404                         /* Need an operand of type ACPI_TYPE_PACKAGE */
 405
 406                         type_needed = ACPI_TYPE_PACKAGE;
 407                         break;
 408
 409                 case ARGI_ANYTYPE:
 410
 411                         /* Any operand type will do */
 412
 413                         type_needed = ACPI_TYPE_ANY;
 414                         break;
 415
 416                 case ARGI_DDBHANDLE:
 417
 418                         /* Need an operand of type ACPI_TYPE_DDB_HANDLE */
 419
 420                         type_needed = ACPI_TYPE_LOCAL_REFERENCE;
 421                         break;
 422
 423                         /*
 424                          * The more complex cases allow multiple resolved object types
 425                          */
 426                 case ARGI_INTEGER:
 427
 428                         /*
 429                          * Need an operand of type ACPI_TYPE_INTEGER,
 430                          * But we can implicitly convert from a STRING or BUFFER
 431                          * Aka - "Implicit Source Operand Conversion"
 432                          */
 433                         status =
 434                             acpi_ex_convert_to_integer(obj_desc, stack_ptr, 16);
 435                         if (ACPI_FAILURE(status)) {
 436                                 if (status == AE_TYPE) {
 437                                         ACPI_ERROR((AE_INFO,
 438                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 439                                                     acpi_ut_get_object_type_name
 440                                                     (obj_desc), obj_desc));
 441
 442                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 443                                 }
 444
 445                                 return_ACPI_STATUS(status);
 446                         }
 447
 448                         if (obj_desc != *stack_ptr) {
 449                                 acpi_ut_remove_reference(obj_desc);
 450                         }
 451                         goto next_operand;
 452
 453                 case ARGI_BUFFER:
 454
 455                         /*
 456                          * Need an operand of type ACPI_TYPE_BUFFER,
 457                          * But we can implicitly convert from a STRING or INTEGER
 458                          * Aka - "Implicit Source Operand Conversion"
 459                          */
 460                         status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
 461                         if (ACPI_FAILURE(status)) {
 462                                 if (status == AE_TYPE) {
 463                                         ACPI_ERROR((AE_INFO,
 464                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 465                                                     acpi_ut_get_object_type_name
 466                                                     (obj_desc), obj_desc));
 467
 468                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 469                                 }
 470
 471                                 return_ACPI_STATUS(status);
 472                         }
 473
 474                         if (obj_desc != *stack_ptr) {
 475                                 acpi_ut_remove_reference(obj_desc);
 476                         }
 477                         goto next_operand;
 478
 479                 case ARGI_STRING:
 480
 481                         /*
 482                          * Need an operand of type ACPI_TYPE_STRING,
 483                          * But we can implicitly convert from a BUFFER or INTEGER
 484                          * Aka - "Implicit Source Operand Conversion"
 485                          */
 486                         status = acpi_ex_convert_to_string(obj_desc, stack_ptr,
 487                                                            ACPI_IMPLICIT_CONVERT_HEX);
 488                         if (ACPI_FAILURE(status)) {
 489                                 if (status == AE_TYPE) {
 490                                         ACPI_ERROR((AE_INFO,
 491                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 492                                                     acpi_ut_get_object_type_name
 493                                                     (obj_desc), obj_desc));
 494
 495                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 496                                 }
 497
 498                                 return_ACPI_STATUS(status);
 499                         }
 500
 501                         if (obj_desc != *stack_ptr) {
 502                                 acpi_ut_remove_reference(obj_desc);
 503                         }
 504                         goto next_operand;
 505
 506                 case ARGI_COMPUTEDATA:
 507
 508                         /* Need an operand of type INTEGER, STRING or BUFFER */
 509
 510                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 511                         case ACPI_TYPE_INTEGER:
 512                         case ACPI_TYPE_STRING:
 513                         case ACPI_TYPE_BUFFER:
 514
 515                                 /* Valid operand */
 516                                 break;
 517
 518                         default:
 519                                 ACPI_ERROR((AE_INFO,
 520                                             "Needed [Integer/String/Buffer], found [%s] %p",
 521                                             acpi_ut_get_object_type_name
 522                                             (obj_desc), obj_desc));
 523
 524                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 525                         }
 526                         goto next_operand;
 527
 528                 case ARGI_BUFFER_OR_STRING:
 529
 530                         /* Need an operand of type STRING or BUFFER */
 531
 532                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 533                         case ACPI_TYPE_STRING:
 534                         case ACPI_TYPE_BUFFER:
 535
 536                                 /* Valid operand */
 537                                 break;
 538
 539                         case ACPI_TYPE_INTEGER:
 540
 541                                 /* Highest priority conversion is to type Buffer */
 542
 543                                 status =
 544                                     acpi_ex_convert_to_buffer(obj_desc,
 545                                                               stack_ptr);
 546                                 if (ACPI_FAILURE(status)) {
 547                                         return_ACPI_STATUS(status);
 548                                 }
 549
 550                                 if (obj_desc != *stack_ptr) {
 551                                         acpi_ut_remove_reference(obj_desc);
 552                                 }
 553                                 break;
 554
 555                         default:
 556                                 ACPI_ERROR((AE_INFO,
 557                                             "Needed [Integer/String/Buffer], found [%s] %p",
 558                                             acpi_ut_get_object_type_name
 559                                             (obj_desc), obj_desc));
 560
 561                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 562                         }
 563                         goto next_operand;
 564
 565                 case ARGI_DATAOBJECT:
 566                         /*
 567                          * ARGI_DATAOBJECT is only used by the size_of operator.
 568                          * Need a buffer, string, package, or ref_of reference.
 569                          *
 570                          * The only reference allowed here is a direct reference to
 571                          * a namespace node.
 572                          */
 573                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 574                         case ACPI_TYPE_PACKAGE:
 575                         case ACPI_TYPE_STRING:
 576                         case ACPI_TYPE_BUFFER:
 577                         case ACPI_TYPE_LOCAL_REFERENCE:
 578
 579                                 /* Valid operand */
 580                                 break;
 581
 582                         default:
 583                                 ACPI_ERROR((AE_INFO,
 584                                             "Needed [Buffer/String/Package/Reference], found [%s] %p",
 585                                             acpi_ut_get_object_type_name
 586                                             (obj_desc), obj_desc));
 587
 588                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 589                         }
 590                         goto next_operand;
 591
 592                 case ARGI_COMPLEXOBJ:
 593
 594                         /* Need a buffer or package or (ACPI 2.0) String */
 595
 596                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 597                         case ACPI_TYPE_PACKAGE:
 598                         case ACPI_TYPE_STRING:
 599                         case ACPI_TYPE_BUFFER:
 600
 601                                 /* Valid operand */
 602                                 break;
 603
 604                         default:
 605                                 ACPI_ERROR((AE_INFO,
 606                                             "Needed [Buffer/String/Package], found [%s] %p",
 607                                             acpi_ut_get_object_type_name
 608                                             (obj_desc), obj_desc));
 609
 610                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 611                         }
 612                         goto next_operand;
 613
 614                 case ARGI_REGION_OR_BUFFER:     /* Used by Load() only */
 615
 616                         /* Need an operand of type REGION or a BUFFER (which could be a resolved region field) */
 617
 618                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 619                         case ACPI_TYPE_BUFFER:
 620                         case ACPI_TYPE_REGION:
 621
 622                                 /* Valid operand */
 623                                 break;
 624
 625                         default:
 626                                 ACPI_ERROR((AE_INFO,
 627                                             "Needed [Region/Buffer], found [%s] %p",
 628                                             acpi_ut_get_object_type_name
 629                                             (obj_desc), obj_desc));
 630
 631                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 632                         }
 633                         goto next_operand;
 634
 635                 case ARGI_DATAREFOBJ:
 636
 637                         /* Used by the Store() operator only */
 638
 639                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 640                         case ACPI_TYPE_INTEGER:
 641                         case ACPI_TYPE_PACKAGE:
 642                         case ACPI_TYPE_STRING:
 643                         case ACPI_TYPE_BUFFER:
 644                         case ACPI_TYPE_BUFFER_FIELD:
 645                         case ACPI_TYPE_LOCAL_REFERENCE:
 646                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 647                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 648                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 649                         case ACPI_TYPE_DDB_HANDLE:
 650
 651                                 /* Valid operand */
 652                                 break;
 653
 654                         default:
 655
 656                                 if (acpi_gbl_enable_interpreter_slack) {
 657                                         /*
 658                                          * Enable original behavior of Store(), allowing any and all
 659                                          * objects as the source operand.  The ACPI spec does not
 660                                          * allow this, however.
 661                                          */
 662                                         break;
 663                                 }
 664
 665                                 if (target_op == AML_DEBUG_OP) {
 666
 667                                         /* Allow store of any object to the Debug object */
 668
 669                                         break;
 670                                 }
 671
 672                                 ACPI_ERROR((AE_INFO,
 673                                             "Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p",
 674                                             acpi_ut_get_object_type_name
 675                                             (obj_desc), obj_desc));
 676
 677                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 678                         }
 679                         goto next_operand;
 680
 681                 default:
 682
 683                         /* Unknown type */
 684
 685                         ACPI_ERROR((AE_INFO,
 686                                     "Internal - Unknown ARGI (required operand) type %X",
 687                                     this_arg_type));
 688
 689                         return_ACPI_STATUS(AE_BAD_PARAMETER);
 690                 }
 691
 692                 /*
 693                  * Make sure that the original object was resolved to the
 694                  * required object type (Simple cases only).
 695                  */
 696                 status = acpi_ex_check_object_type(type_needed,
 697                                                    ACPI_GET_OBJECT_TYPE
 698                                                    (*stack_ptr), *stack_ptr);
 699                 if (ACPI_FAILURE(status)) {
 700                         return_ACPI_STATUS(status);
 701                 }
 702
 703               next_operand:
 704                 /*
 705                  * If more operands needed, decrement stack_ptr to point
 706                  * to next operand on stack
 707                  */
 708                 if (GET_CURRENT_ARG_TYPE(arg_types)) {
 709                         stack_ptr--;
 710                 }
 711         }
 712
 713         return_ACPI_STATUS(status);
 714 }