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 - 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 <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         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] RequiredOperandTypes=%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
 228                                 /* Decode the Reference */
 229
 230                                 op_info = acpi_ps_get_opcode_info(opcode);
 231                                 if (op_info->class == AML_CLASS_UNKNOWN) {
 232                                         return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 233                                 }
 234
 235                                 switch (obj_desc->reference.opcode) {
 236                                 case AML_DEBUG_OP:
 237                                         target_op = AML_DEBUG_OP;
 238
 239                                         /*lint -fallthrough */
 240
 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, RefOpcode [%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                         goto next_operand;
 334
 335                 case ARGI_DATAREFOBJ:   /* Store operator only */
 336
 337                         /*
 338                          * We don't want to resolve index_op reference objects during
 339                          * a store because this would be an implicit de_ref_of operation.
 340                          * Instead, we just want to store the reference object.
 341                          * -- All others must be resolved below.
 342                          */
 343                         if ((opcode == AML_STORE_OP) &&
 344                             (ACPI_GET_OBJECT_TYPE(*stack_ptr) ==
 345                              ACPI_TYPE_LOCAL_REFERENCE)
 346                             && ((*stack_ptr)->reference.opcode == AML_INDEX_OP)) {
 347                                 goto next_operand;
 348                         }
 349                         break;
 350
 351                 default:
 352                         /* All cases covered above */
 353                         break;
 354                 }
 355
 356                 /*
 357                  * Resolve this object to a value
 358                  */
 359                 status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
 360                 if (ACPI_FAILURE(status)) {
 361                         return_ACPI_STATUS(status);
 362                 }
 363
 364                 /* Get the resolved object */
 365
 366                 obj_desc = *stack_ptr;
 367
 368                 /*
 369                  * Check the resulting object (value) type
 370                  */
 371                 switch (this_arg_type) {
 372                         /*
 373                          * For the simple cases, only one type of resolved object
 374                          * is allowed
 375                          */
 376                 case ARGI_MUTEX:
 377
 378                         /* Need an operand of type ACPI_TYPE_MUTEX */
 379
 380                         type_needed = ACPI_TYPE_MUTEX;
 381                         break;
 382
 383                 case ARGI_EVENT:
 384
 385                         /* Need an operand of type ACPI_TYPE_EVENT */
 386
 387                         type_needed = ACPI_TYPE_EVENT;
 388                         break;
 389
 390                 case ARGI_PACKAGE:      /* Package */
 391
 392                         /* Need an operand of type ACPI_TYPE_PACKAGE */
 393
 394                         type_needed = ACPI_TYPE_PACKAGE;
 395                         break;
 396
 397                 case ARGI_ANYTYPE:
 398
 399                         /* Any operand type will do */
 400
 401                         type_needed = ACPI_TYPE_ANY;
 402                         break;
 403
 404                 case ARGI_DDBHANDLE:
 405
 406                         /* Need an operand of type ACPI_TYPE_DDB_HANDLE */
 407
 408                         type_needed = ACPI_TYPE_LOCAL_REFERENCE;
 409                         break;
 410
 411                         /*
 412                          * The more complex cases allow multiple resolved object types
 413                          */
 414                 case ARGI_INTEGER:
 415
 416                         /*
 417                          * Need an operand of type ACPI_TYPE_INTEGER,
 418                          * But we can implicitly convert from a STRING or BUFFER
 419                          * Aka - "Implicit Source Operand Conversion"
 420                          */
 421                         status =
 422                             acpi_ex_convert_to_integer(obj_desc, stack_ptr, 16);
 423                         if (ACPI_FAILURE(status)) {
 424                                 if (status == AE_TYPE) {
 425                                         ACPI_ERROR((AE_INFO,
 426                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 427                                                     acpi_ut_get_object_type_name
 428                                                     (obj_desc), obj_desc));
 429
 430                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 431                                 }
 432
 433                                 return_ACPI_STATUS(status);
 434                         }
 435
 436                         if (obj_desc != *stack_ptr) {
 437                                 acpi_ut_remove_reference(obj_desc);
 438                         }
 439                         goto next_operand;
 440
 441                 case ARGI_BUFFER:
 442
 443                         /*
 444                          * Need an operand of type ACPI_TYPE_BUFFER,
 445                          * But we can implicitly convert from a STRING or INTEGER
 446                          * Aka - "Implicit Source Operand Conversion"
 447                          */
 448                         status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
 449                         if (ACPI_FAILURE(status)) {
 450                                 if (status == AE_TYPE) {
 451                                         ACPI_ERROR((AE_INFO,
 452                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 453                                                     acpi_ut_get_object_type_name
 454                                                     (obj_desc), obj_desc));
 455
 456                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 457                                 }
 458
 459                                 return_ACPI_STATUS(status);
 460                         }
 461
 462                         if (obj_desc != *stack_ptr) {
 463                                 acpi_ut_remove_reference(obj_desc);
 464                         }
 465                         goto next_operand;
 466
 467                 case ARGI_STRING:
 468
 469                         /*
 470                          * Need an operand of type ACPI_TYPE_STRING,
 471                          * But we can implicitly convert from a BUFFER or INTEGER
 472                          * Aka - "Implicit Source Operand Conversion"
 473                          */
 474                         status = acpi_ex_convert_to_string(obj_desc, stack_ptr,
 475                                                            ACPI_IMPLICIT_CONVERT_HEX);
 476                         if (ACPI_FAILURE(status)) {
 477                                 if (status == AE_TYPE) {
 478                                         ACPI_ERROR((AE_INFO,
 479                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 480                                                     acpi_ut_get_object_type_name
 481                                                     (obj_desc), obj_desc));
 482
 483                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 484                                 }
 485
 486                                 return_ACPI_STATUS(status);
 487                         }
 488
 489                         if (obj_desc != *stack_ptr) {
 490                                 acpi_ut_remove_reference(obj_desc);
 491                         }
 492                         goto next_operand;
 493
 494                 case ARGI_COMPUTEDATA:
 495
 496                         /* Need an operand of type INTEGER, STRING or BUFFER */
 497
 498                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 499                         case ACPI_TYPE_INTEGER:
 500                         case ACPI_TYPE_STRING:
 501                         case ACPI_TYPE_BUFFER:
 502
 503                                 /* Valid operand */
 504                                 break;
 505
 506                         default:
 507                                 ACPI_ERROR((AE_INFO,
 508                                             "Needed [Integer/String/Buffer], found [%s] %p",
 509                                             acpi_ut_get_object_type_name
 510                                             (obj_desc), obj_desc));
 511
 512                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 513                         }
 514                         goto next_operand;
 515
 516                 case ARGI_BUFFER_OR_STRING:
 517
 518                         /* Need an operand of type STRING or BUFFER */
 519
 520                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 521                         case ACPI_TYPE_STRING:
 522                         case ACPI_TYPE_BUFFER:
 523
 524                                 /* Valid operand */
 525                                 break;
 526
 527                         case ACPI_TYPE_INTEGER:
 528
 529                                 /* Highest priority conversion is to type Buffer */
 530
 531                                 status =
 532                                     acpi_ex_convert_to_buffer(obj_desc,
 533                                                               stack_ptr);
 534                                 if (ACPI_FAILURE(status)) {
 535                                         return_ACPI_STATUS(status);
 536                                 }
 537
 538                                 if (obj_desc != *stack_ptr) {
 539                                         acpi_ut_remove_reference(obj_desc);
 540                                 }
 541                                 break;
 542
 543                         default:
 544                                 ACPI_ERROR((AE_INFO,
 545                                             "Needed [Integer/String/Buffer], found [%s] %p",
 546                                             acpi_ut_get_object_type_name
 547                                             (obj_desc), obj_desc));
 548
 549                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 550                         }
 551                         goto next_operand;
 552
 553                 case ARGI_DATAOBJECT:
 554                         /*
 555                          * ARGI_DATAOBJECT is only used by the size_of operator.
 556                          * Need a buffer, string, package, or ref_of reference.
 557                          *
 558                          * The only reference allowed here is a direct reference to
 559                          * a namespace node.
 560                          */
 561                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 562                         case ACPI_TYPE_PACKAGE:
 563                         case ACPI_TYPE_STRING:
 564                         case ACPI_TYPE_BUFFER:
 565                         case ACPI_TYPE_LOCAL_REFERENCE:
 566
 567                                 /* Valid operand */
 568                                 break;
 569
 570                         default:
 571                                 ACPI_ERROR((AE_INFO,
 572                                             "Needed [Buffer/String/Package/Reference], found [%s] %p",
 573                                             acpi_ut_get_object_type_name
 574                                             (obj_desc), obj_desc));
 575
 576                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 577                         }
 578                         goto next_operand;
 579
 580                 case ARGI_COMPLEXOBJ:
 581
 582                         /* Need a buffer or package or (ACPI 2.0) String */
 583
 584                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 585                         case ACPI_TYPE_PACKAGE:
 586                         case ACPI_TYPE_STRING:
 587                         case ACPI_TYPE_BUFFER:
 588
 589                                 /* Valid operand */
 590                                 break;
 591
 592                         default:
 593                                 ACPI_ERROR((AE_INFO,
 594                                             "Needed [Buffer/String/Package], found [%s] %p",
 595                                             acpi_ut_get_object_type_name
 596                                             (obj_desc), obj_desc));
 597
 598                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 599                         }
 600                         goto next_operand;
 601
 602                 case ARGI_REGION_OR_BUFFER:     /* Used by Load() only */
 603
 604                         /* Need an operand of type REGION or a BUFFER (which could be a resolved region field) */
 605
 606                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 607                         case ACPI_TYPE_BUFFER:
 608                         case ACPI_TYPE_REGION:
 609
 610                                 /* Valid operand */
 611                                 break;
 612
 613                         default:
 614                                 ACPI_ERROR((AE_INFO,
 615                                             "Needed [Region/Buffer], found [%s] %p",
 616                                             acpi_ut_get_object_type_name
 617                                             (obj_desc), obj_desc));
 618
 619                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 620                         }
 621                         goto next_operand;
 622
 623                 case ARGI_DATAREFOBJ:
 624
 625                         /* Used by the Store() operator only */
 626
 627                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 628                         case ACPI_TYPE_INTEGER:
 629                         case ACPI_TYPE_PACKAGE:
 630                         case ACPI_TYPE_STRING:
 631                         case ACPI_TYPE_BUFFER:
 632                         case ACPI_TYPE_BUFFER_FIELD:
 633                         case ACPI_TYPE_LOCAL_REFERENCE:
 634                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 635                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 636                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 637                         case ACPI_TYPE_DDB_HANDLE:
 638
 639                                 /* Valid operand */
 640                                 break;
 641
 642                         default:
 643
 644                                 if (acpi_gbl_enable_interpreter_slack) {
 645                                         /*
 646                                          * Enable original behavior of Store(), allowing any and all
 647                                          * objects as the source operand.  The ACPI spec does not
 648                                          * allow this, however.
 649                                          */
 650                                         break;
 651                                 }
 652
 653                                 if (target_op == AML_DEBUG_OP) {
 654
 655                                         /* Allow store of any object to the Debug object */
 656
 657                                         break;
 658                                 }
 659
 660                                 ACPI_ERROR((AE_INFO,
 661                                             "Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p",
 662                                             acpi_ut_get_object_type_name
 663                                             (obj_desc), obj_desc));
 664
 665                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 666                         }
 667                         goto next_operand;
 668
 669                 default:
 670
 671                         /* Unknown type */
 672
 673                         ACPI_ERROR((AE_INFO,
 674                                     "Internal - Unknown ARGI (required operand) type %X",
 675                                     this_arg_type));
 676
 677                         return_ACPI_STATUS(AE_BAD_PARAMETER);
 678                 }
 679
 680                 /*
 681                  * Make sure that the original object was resolved to the
 682                  * required object type (Simple cases only).
 683                  */
 684                 status = acpi_ex_check_object_type(type_needed,
 685                                                    ACPI_GET_OBJECT_TYPE
 686                                                    (*stack_ptr), *stack_ptr);
 687                 if (ACPI_FAILURE(status)) {
 688                         return_ACPI_STATUS(status);
 689                 }
 690
 691               next_operand:
 692                 /*
 693                  * If more operands needed, decrement stack_ptr to point
 694                  * to next operand on stack
 695                  */
 696                 if (GET_CURRENT_ARG_TYPE(arg_types)) {
 697                         stack_ptr--;
 698                 }
 699         }
 700
 701         ACPI_DUMP_OPERANDS(walk_state->operands,
 702                            acpi_ps_get_opcode_name(opcode),
 703                            walk_state->num_operands);
 704
 705         return_ACPI_STATUS(status);
 706 }