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 - 2006, 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                 /* All types OK, so we don't perform any typechecks */
  81
  82                 return (AE_OK);
  83         }
  84
  85         if (type_needed == ACPI_TYPE_LOCAL_REFERENCE) {
  86                 /*
  87                  * Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
  88                  * objects and thus allow them to be targets.  (As per the ACPI
  89                  * specification, a store to a constant is a noop.)
  90                  */
  91                 if ((this_type == ACPI_TYPE_INTEGER) &&
  92                     (((union acpi_operand_object *)object)->common.
  93                      flags & AOPOBJ_AML_CONSTANT)) {
  94                         return (AE_OK);
  95                 }
  96         }
  97
  98         if (type_needed != this_type) {
  99                 ACPI_ERROR((AE_INFO,
 100                             "Needed type [%s], found [%s] %p",
 101                             acpi_ut_get_type_name(type_needed),
 102                             acpi_ut_get_type_name(this_type), object));
 103
 104                 return (AE_AML_OPERAND_TYPE);
 105         }
 106
 107         return (AE_OK);
 108 }
 109
 110 /*******************************************************************************
 111  *
 112  * FUNCTION:    acpi_ex_resolve_operands
 113  *
 114  * PARAMETERS:  Opcode              - Opcode being interpreted
 115  *              stack_ptr           - Pointer to the operand stack to be
 116  *                                    resolved
 117  *              walk_state          - Current state
 118  *
 119  * RETURN:      Status
 120  *
 121  * DESCRIPTION: Convert multiple input operands to the types required by the
 122  *              target operator.
 123  *
 124  *      Each 5-bit group in arg_types represents one required
 125  *      operand and indicates the required Type. The corresponding operand
 126  *      will be converted to the required type if possible, otherwise we
 127  *      abort with an exception.
 128  *
 129  ******************************************************************************/
 130
 131 acpi_status
 132 acpi_ex_resolve_operands(u16 opcode,
 133                          union acpi_operand_object ** stack_ptr,
 134                          struct acpi_walk_state * walk_state)
 135 {
 136         union acpi_operand_object *obj_desc;
 137         acpi_status status = AE_OK;
 138         u8 object_type;
 139         void *temp_node;
 140         u32 arg_types;
 141         const struct acpi_opcode_info *op_info;
 142         u32 this_arg_type;
 143         acpi_object_type type_needed;
 144         u16 target_op = 0;
 145
 146         ACPI_FUNCTION_TRACE_U32("ex_resolve_operands", opcode);
 147
 148         op_info = acpi_ps_get_opcode_info(opcode);
 149         if (op_info->class == AML_CLASS_UNKNOWN) {
 150                 return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 151         }
 152
 153         arg_types = op_info->runtime_args;
 154         if (arg_types == ARGI_INVALID_OPCODE) {
 155                 ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", opcode));
 156
 157                 return_ACPI_STATUS(AE_AML_INTERNAL);
 158         }
 159
 160         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 161                           "Opcode %X [%s] required_operand_types=%8.8X\n",
 162                           opcode, op_info->name, arg_types));
 163
 164         /*
 165          * Normal exit is with (arg_types == 0) at end of argument list.
 166          * Function will return an exception from within the loop upon
 167          * finding an entry which is not (or cannot be converted
 168          * to) the required type; if stack underflows; or upon
 169          * finding a NULL stack entry (which should not happen).
 170          */
 171         while (GET_CURRENT_ARG_TYPE(arg_types)) {
 172                 if (!stack_ptr || !*stack_ptr) {
 173                         ACPI_ERROR((AE_INFO, "Null stack entry at %p",
 174                                     stack_ptr));
 175
 176                         return_ACPI_STATUS(AE_AML_INTERNAL);
 177                 }
 178
 179                 /* Extract useful items */
 180
 181                 obj_desc = *stack_ptr;
 182
 183                 /* Decode the descriptor type */
 184
 185                 switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
 186                 case ACPI_DESC_TYPE_NAMED:
 187
 188                         /* Namespace Node */
 189
 190                         object_type =
 191                             ((struct acpi_namespace_node *)obj_desc)->type;
 192
 193                         /*
 194                          * Resolve an alias object. The construction of these objects
 195                          * guarantees that there is only one level of alias indirection;
 196                          * thus, the attached object is always the aliased namespace node
 197                          */
 198                         if (object_type == ACPI_TYPE_LOCAL_ALIAS) {
 199                                 obj_desc =
 200                                     acpi_ns_get_attached_object((struct
 201                                                                  acpi_namespace_node
 202                                                                  *)obj_desc);
 203                                 *stack_ptr = obj_desc;
 204                                 object_type =
 205                                     ((struct acpi_namespace_node *)obj_desc)->
 206                                     type;
 207                         }
 208                         break;
 209
 210                 case ACPI_DESC_TYPE_OPERAND:
 211
 212                         /* ACPI internal object */
 213
 214                         object_type = ACPI_GET_OBJECT_TYPE(obj_desc);
 215
 216                         /* Check for bad acpi_object_type */
 217
 218                         if (!acpi_ut_valid_object_type(object_type)) {
 219                                 ACPI_ERROR((AE_INFO,
 220                                             "Bad operand object type [%X]",
 221                                             object_type));
 222
 223                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 224                         }
 225
 226                         if (object_type == (u8) ACPI_TYPE_LOCAL_REFERENCE) {
 227                                 /* Decode the Reference */
 228
 229                                 op_info = acpi_ps_get_opcode_info(opcode);
 230                                 if (op_info->class == AML_CLASS_UNKNOWN) {
 231                                         return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 232                                 }
 233
 234                                 switch (obj_desc->reference.opcode) {
 235                                 case AML_DEBUG_OP:
 236                                         target_op = AML_DEBUG_OP;
 237
 238                                         /*lint -fallthrough */
 239
 240                                 case AML_NAME_OP:
 241                                 case AML_INDEX_OP:
 242                                 case AML_REF_OF_OP:
 243                                 case AML_ARG_OP:
 244                                 case AML_LOCAL_OP:
 245                                 case AML_LOAD_OP:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
 246                                 case AML_INT_NAMEPATH_OP:       /* Reference to a named object */
 247
 248                                         ACPI_DEBUG_ONLY_MEMBERS(ACPI_DEBUG_PRINT
 249                                                                 ((ACPI_DB_EXEC,
 250                                                                   "Operand is a Reference, ref_opcode [%s]\n",
 251                                                                   (acpi_ps_get_opcode_info
 252                                                                    (obj_desc->
 253                                                                     reference.
 254                                                                     opcode))->
 255                                                                   name)));
 256                                         break;
 257
 258                                 default:
 259                                         ACPI_ERROR((AE_INFO,
 260                                                     "Operand is a Reference, Unknown Reference Opcode: %X",
 261                                                     obj_desc->reference.
 262                                                     opcode));
 263
 264                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 265                                 }
 266                         }
 267                         break;
 268
 269                 default:
 270
 271                         /* Invalid descriptor */
 272
 273                         ACPI_ERROR((AE_INFO,
 274                                     "Invalid descriptor %p [%s]",
 275                                     obj_desc,
 276                                     acpi_ut_get_descriptor_name(obj_desc)));
 277
 278                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 279                 }
 280
 281                 /* Get one argument type, point to the next */
 282
 283                 this_arg_type = GET_CURRENT_ARG_TYPE(arg_types);
 284                 INCREMENT_ARG_LIST(arg_types);
 285
 286                 /*
 287                  * Handle cases where the object does not need to be
 288                  * resolved to a value
 289                  */
 290                 switch (this_arg_type) {
 291                 case ARGI_REF_OR_STRING:        /* Can be a String or Reference */
 292
 293                         if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 294                              ACPI_DESC_TYPE_OPERAND)
 295                             && (ACPI_GET_OBJECT_TYPE(obj_desc) ==
 296                                 ACPI_TYPE_STRING)) {
 297                                 /*
 298                                  * String found - the string references a named object and
 299                                  * must be resolved to a node
 300                                  */
 301                                 goto next_operand;
 302                         }
 303
 304                         /*
 305                          * Else not a string - fall through to the normal Reference
 306                          * case below
 307                          */
 308                         /*lint -fallthrough */
 309
 310                 case ARGI_REFERENCE:    /* References: */
 311                 case ARGI_INTEGER_REF:
 312                 case ARGI_OBJECT_REF:
 313                 case ARGI_DEVICE_REF:
 314                 case ARGI_TARGETREF:    /* Allows implicit conversion rules before store */
 315                 case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
 316                 case ARGI_SIMPLE_TARGET:        /* Name, Local, or Arg - no implicit conversion  */
 317
 318                         /*
 319                          * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
 320                          * A Namespace Node is OK as-is
 321                          */
 322                         if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 323                             ACPI_DESC_TYPE_NAMED) {
 324                                 goto next_operand;
 325                         }
 326
 327                         status =
 328                             acpi_ex_check_object_type(ACPI_TYPE_LOCAL_REFERENCE,
 329                                                       object_type, obj_desc);
 330                         if (ACPI_FAILURE(status)) {
 331                                 return_ACPI_STATUS(status);
 332                         }
 333
 334                         if (obj_desc->reference.opcode == AML_NAME_OP) {
 335                                 /* Convert a named reference to the actual named object */
 336
 337                                 temp_node = obj_desc->reference.object;
 338                                 acpi_ut_remove_reference(obj_desc);
 339                                 (*stack_ptr) = temp_node;
 340                         }
 341                         goto next_operand;
 342
 343                 case ARGI_DATAREFOBJ:   /* Store operator only */
 344
 345                         /*
 346                          * We don't want to resolve index_op reference objects during
 347                          * a store because this would be an implicit de_ref_of operation.
 348                          * Instead, we just want to store the reference object.
 349                          * -- All others must be resolved below.
 350                          */
 351                         if ((opcode == AML_STORE_OP) &&
 352                             (ACPI_GET_OBJECT_TYPE(*stack_ptr) ==
 353                              ACPI_TYPE_LOCAL_REFERENCE)
 354                             && ((*stack_ptr)->reference.opcode ==
 355                                 AML_INDEX_OP)) {
 356                                 goto next_operand;
 357                         }
 358                         break;
 359
 360                 default:
 361                         /* All cases covered above */
 362                         break;
 363                 }
 364
 365                 /*
 366                  * Resolve this object to a value
 367                  */
 368                 status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
 369                 if (ACPI_FAILURE(status)) {
 370                         return_ACPI_STATUS(status);
 371                 }
 372
 373                 /* Get the resolved object */
 374
 375                 obj_desc = *stack_ptr;
 376
 377                 /*
 378                  * Check the resulting object (value) type
 379                  */
 380                 switch (this_arg_type) {
 381                         /*
 382                          * For the simple cases, only one type of resolved object
 383                          * is allowed
 384                          */
 385                 case ARGI_MUTEX:
 386
 387                         /* Need an operand of type ACPI_TYPE_MUTEX */
 388
 389                         type_needed = ACPI_TYPE_MUTEX;
 390                         break;
 391
 392                 case ARGI_EVENT:
 393
 394                         /* Need an operand of type ACPI_TYPE_EVENT */
 395
 396                         type_needed = ACPI_TYPE_EVENT;
 397                         break;
 398
 399                 case ARGI_PACKAGE:      /* Package */
 400
 401                         /* Need an operand of type ACPI_TYPE_PACKAGE */
 402
 403                         type_needed = ACPI_TYPE_PACKAGE;
 404                         break;
 405
 406                 case ARGI_ANYTYPE:
 407
 408                         /* Any operand type will do */
 409
 410                         type_needed = ACPI_TYPE_ANY;
 411                         break;
 412
 413                 case ARGI_DDBHANDLE:
 414
 415                         /* Need an operand of type ACPI_TYPE_DDB_HANDLE */
 416
 417                         type_needed = ACPI_TYPE_LOCAL_REFERENCE;
 418                         break;
 419
 420                         /*
 421                          * The more complex cases allow multiple resolved object types
 422                          */
 423                 case ARGI_INTEGER:
 424
 425                         /*
 426                          * Need an operand of type ACPI_TYPE_INTEGER,
 427                          * But we can implicitly convert from a STRING or BUFFER
 428                          * Aka - "Implicit Source Operand Conversion"
 429                          */
 430                         status =
 431                             acpi_ex_convert_to_integer(obj_desc, stack_ptr, 16);
 432                         if (ACPI_FAILURE(status)) {
 433                                 if (status == AE_TYPE) {
 434                                         ACPI_ERROR((AE_INFO,
 435                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 436                                                     acpi_ut_get_object_type_name
 437                                                     (obj_desc), obj_desc));
 438
 439                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 440                                 }
 441
 442                                 return_ACPI_STATUS(status);
 443                         }
 444
 445                         if (obj_desc != *stack_ptr) {
 446                                 acpi_ut_remove_reference(obj_desc);
 447                         }
 448                         goto next_operand;
 449
 450                 case ARGI_BUFFER:
 451
 452                         /*
 453                          * Need an operand of type ACPI_TYPE_BUFFER,
 454                          * But we can implicitly convert from a STRING or INTEGER
 455                          * Aka - "Implicit Source Operand Conversion"
 456                          */
 457                         status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
 458                         if (ACPI_FAILURE(status)) {
 459                                 if (status == AE_TYPE) {
 460                                         ACPI_ERROR((AE_INFO,
 461                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 462                                                     acpi_ut_get_object_type_name
 463                                                     (obj_desc), obj_desc));
 464
 465                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 466                                 }
 467
 468                                 return_ACPI_STATUS(status);
 469                         }
 470
 471                         if (obj_desc != *stack_ptr) {
 472                                 acpi_ut_remove_reference(obj_desc);
 473                         }
 474                         goto next_operand;
 475
 476                 case ARGI_STRING:
 477
 478                         /*
 479                          * Need an operand of type ACPI_TYPE_STRING,
 480                          * But we can implicitly convert from a BUFFER or INTEGER
 481                          * Aka - "Implicit Source Operand Conversion"
 482                          */
 483                         status = acpi_ex_convert_to_string(obj_desc, stack_ptr,
 484                                                            ACPI_IMPLICIT_CONVERT_HEX);
 485                         if (ACPI_FAILURE(status)) {
 486                                 if (status == AE_TYPE) {
 487                                         ACPI_ERROR((AE_INFO,
 488                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 489                                                     acpi_ut_get_object_type_name
 490                                                     (obj_desc), obj_desc));
 491
 492                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 493                                 }
 494
 495                                 return_ACPI_STATUS(status);
 496                         }
 497
 498                         if (obj_desc != *stack_ptr) {
 499                                 acpi_ut_remove_reference(obj_desc);
 500                         }
 501                         goto next_operand;
 502
 503                 case ARGI_COMPUTEDATA:
 504
 505                         /* Need an operand of type INTEGER, STRING or BUFFER */
 506
 507                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 508                         case ACPI_TYPE_INTEGER:
 509                         case ACPI_TYPE_STRING:
 510                         case ACPI_TYPE_BUFFER:
 511
 512                                 /* Valid operand */
 513                                 break;
 514
 515                         default:
 516                                 ACPI_ERROR((AE_INFO,
 517                                             "Needed [Integer/String/Buffer], found [%s] %p",
 518                                             acpi_ut_get_object_type_name
 519                                             (obj_desc), obj_desc));
 520
 521                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 522                         }
 523                         goto next_operand;
 524
 525                 case ARGI_BUFFER_OR_STRING:
 526
 527                         /* Need an operand of type STRING or BUFFER */
 528
 529                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 530                         case ACPI_TYPE_STRING:
 531                         case ACPI_TYPE_BUFFER:
 532
 533                                 /* Valid operand */
 534                                 break;
 535
 536                         case ACPI_TYPE_INTEGER:
 537
 538                                 /* Highest priority conversion is to type Buffer */
 539
 540                                 status =
 541                                     acpi_ex_convert_to_buffer(obj_desc,
 542                                                               stack_ptr);
 543                                 if (ACPI_FAILURE(status)) {
 544                                         return_ACPI_STATUS(status);
 545                                 }
 546
 547                                 if (obj_desc != *stack_ptr) {
 548                                         acpi_ut_remove_reference(obj_desc);
 549                                 }
 550                                 break;
 551
 552                         default:
 553                                 ACPI_ERROR((AE_INFO,
 554                                             "Needed [Integer/String/Buffer], found [%s] %p",
 555                                             acpi_ut_get_object_type_name
 556                                             (obj_desc), obj_desc));
 557
 558                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 559                         }
 560                         goto next_operand;
 561
 562                 case ARGI_DATAOBJECT:
 563                         /*
 564                          * ARGI_DATAOBJECT is only used by the size_of operator.
 565                          * Need a buffer, string, package, or ref_of reference.
 566                          *
 567                          * The only reference allowed here is a direct reference to
 568                          * a namespace node.
 569                          */
 570                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 571                         case ACPI_TYPE_PACKAGE:
 572                         case ACPI_TYPE_STRING:
 573                         case ACPI_TYPE_BUFFER:
 574                         case ACPI_TYPE_LOCAL_REFERENCE:
 575
 576                                 /* Valid operand */
 577                                 break;
 578
 579                         default:
 580                                 ACPI_ERROR((AE_INFO,
 581                                             "Needed [Buffer/String/Package/Reference], found [%s] %p",
 582                                             acpi_ut_get_object_type_name
 583                                             (obj_desc), obj_desc));
 584
 585                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 586                         }
 587                         goto next_operand;
 588
 589                 case ARGI_COMPLEXOBJ:
 590
 591                         /* Need a buffer or package or (ACPI 2.0) String */
 592
 593                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 594                         case ACPI_TYPE_PACKAGE:
 595                         case ACPI_TYPE_STRING:
 596                         case ACPI_TYPE_BUFFER:
 597
 598                                 /* Valid operand */
 599                                 break;
 600
 601                         default:
 602                                 ACPI_ERROR((AE_INFO,
 603                                             "Needed [Buffer/String/Package], found [%s] %p",
 604                                             acpi_ut_get_object_type_name
 605                                             (obj_desc), obj_desc));
 606
 607                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 608                         }
 609                         goto next_operand;
 610
 611                 case ARGI_REGION_OR_FIELD:
 612
 613                         /* Need an operand of type REGION or a FIELD in a region */
 614
 615                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 616                         case ACPI_TYPE_REGION:
 617                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 618                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 619                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 620
 621                                 /* Valid operand */
 622                                 break;
 623
 624                         default:
 625                                 ACPI_ERROR((AE_INFO,
 626                                             "Needed [Region/region_field], found [%s] %p",
 627                                             acpi_ut_get_object_type_name
 628                                             (obj_desc), obj_desc));
 629
 630                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 631                         }
 632                         goto next_operand;
 633
 634                 case ARGI_DATAREFOBJ:
 635
 636                         /* Used by the Store() operator only */
 637
 638                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 639                         case ACPI_TYPE_INTEGER:
 640                         case ACPI_TYPE_PACKAGE:
 641                         case ACPI_TYPE_STRING:
 642                         case ACPI_TYPE_BUFFER:
 643                         case ACPI_TYPE_BUFFER_FIELD:
 644                         case ACPI_TYPE_LOCAL_REFERENCE:
 645                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 646                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 647                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 648                         case ACPI_TYPE_DDB_HANDLE:
 649
 650                                 /* Valid operand */
 651                                 break;
 652
 653                         default:
 654
 655                                 if (acpi_gbl_enable_interpreter_slack) {
 656                                         /*
 657                                          * Enable original behavior of Store(), allowing any and all
 658                                          * objects as the source operand.  The ACPI spec does not
 659                                          * allow this, however.
 660                                          */
 661                                         break;
 662                                 }
 663
 664                                 if (target_op == AML_DEBUG_OP) {
 665                                         /* Allow store of any object to the Debug object */
 666
 667                                         break;
 668                                 }
 669
 670                                 ACPI_ERROR((AE_INFO,
 671                                             "Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p",
 672                                             acpi_ut_get_object_type_name
 673                                             (obj_desc), obj_desc));
 674
 675                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 676                         }
 677                         goto next_operand;
 678
 679                 default:
 680
 681                         /* Unknown type */
 682
 683                         ACPI_ERROR((AE_INFO,
 684                                     "Internal - Unknown ARGI (required operand) type %X",
 685                                     this_arg_type));
 686
 687                         return_ACPI_STATUS(AE_BAD_PARAMETER);
 688                 }
 689
 690                 /*
 691                  * Make sure that the original object was resolved to the
 692                  * required object type (Simple cases only).
 693                  */
 694                 status = acpi_ex_check_object_type(type_needed,
 695                                                    ACPI_GET_OBJECT_TYPE
 696                                                    (*stack_ptr), *stack_ptr);
 697                 if (ACPI_FAILURE(status)) {
 698                         return_ACPI_STATUS(status);
 699                 }
 700
 701               next_operand:
 702                 /*
 703                  * If more operands needed, decrement stack_ptr to point
 704                  * to next operand on stack
 705                  */
 706                 if (GET_CURRENT_ARG_TYPE(arg_types)) {
 707                         stack_ptr--;
 708                 }
 709         }
 710
 711         return_ACPI_STATUS(status);
 712 }