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 - 2005, 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
  50 #define _COMPONENT          ACPI_EXECUTER
  51 ACPI_MODULE_NAME("exresop")
  52
  53 /* Local prototypes */
  54 static acpi_status
  55 acpi_ex_check_object_type(acpi_object_type type_needed,
  56                           acpi_object_type this_type, void *object);
  57
  58 /*******************************************************************************
  59  *
  60  * FUNCTION:    acpi_ex_check_object_type
  61  *
  62  * PARAMETERS:  type_needed         Object type needed
  63  *              this_type           Actual object type
  64  *              Object              Object pointer
  65  *
  66  * RETURN:      Status
  67  *
  68  * DESCRIPTION: Check required type against actual type
  69  *
  70  ******************************************************************************/
  71
  72 static acpi_status
  73 acpi_ex_check_object_type(acpi_object_type type_needed,
  74                           acpi_object_type this_type, void *object)
  75 {
  76         ACPI_FUNCTION_NAME("ex_check_object_type");
  77
  78         if (type_needed == ACPI_TYPE_ANY) {
  79                 /* All types OK, so we don't perform any typechecks */
  80
  81                 return (AE_OK);
  82         }
  83
  84         if (type_needed == ACPI_TYPE_LOCAL_REFERENCE) {
  85                 /*
  86                  * Allow the AML "Constant" opcodes (Zero, One, etc.) to be reference
  87                  * objects and thus allow them to be targets.  (As per the ACPI
  88                  * specification, a store to a constant is a noop.)
  89                  */
  90                 if ((this_type == ACPI_TYPE_INTEGER) &&
  91                     (((union acpi_operand_object *)object)->common.
  92                      flags & AOPOBJ_AML_CONSTANT)) {
  93                         return (AE_OK);
  94                 }
  95         }
  96
  97         if (type_needed != this_type) {
  98                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
  99                                   "Needed [%s], found [%s] %p\n",
 100                                   acpi_ut_get_type_name(type_needed),
 101                                   acpi_ut_get_type_name(this_type), object));
 102
 103                 return (AE_AML_OPERAND_TYPE);
 104         }
 105
 106         return (AE_OK);
 107 }
 108
 109 /*******************************************************************************
 110  *
 111  * FUNCTION:    acpi_ex_resolve_operands
 112  *
 113  * PARAMETERS:  Opcode              - Opcode being interpreted
 114  *              stack_ptr           - Pointer to the operand stack to be
 115  *                                    resolved
 116  *              walk_state          - Current state
 117  *
 118  * RETURN:      Status
 119  *
 120  * DESCRIPTION: Convert multiple input operands to the types required by the
 121  *              target operator.
 122  *
 123  *      Each 5-bit group in arg_types represents one required
 124  *      operand and indicates the required Type. The corresponding operand
 125  *      will be converted to the required type if possible, otherwise we
 126  *      abort with an exception.
 127  *
 128  ******************************************************************************/
 129
 130 acpi_status
 131 acpi_ex_resolve_operands(u16 opcode,
 132                          union acpi_operand_object ** stack_ptr,
 133                          struct acpi_walk_state * walk_state)
 134 {
 135         union acpi_operand_object *obj_desc;
 136         acpi_status status = AE_OK;
 137         u8 object_type;
 138         void *temp_node;
 139         u32 arg_types;
 140         const struct acpi_opcode_info *op_info;
 141         u32 this_arg_type;
 142         acpi_object_type type_needed;
 143         u16 target_op = 0;
 144
 145         ACPI_FUNCTION_TRACE_U32("ex_resolve_operands", opcode);
 146
 147         op_info = acpi_ps_get_opcode_info(opcode);
 148         if (op_info->class == AML_CLASS_UNKNOWN) {
 149                 return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 150         }
 151
 152         arg_types = op_info->runtime_args;
 153         if (arg_types == ARGI_INVALID_OPCODE) {
 154                 ACPI_REPORT_ERROR(("resolve_operands: %X is not a valid AML opcode\n", opcode));
 155
 156                 return_ACPI_STATUS(AE_AML_INTERNAL);
 157         }
 158
 159         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 160                           "Opcode %X [%s] required_operand_types=%8.8X \n",
 161                           opcode, op_info->name, arg_types));
 162
 163         /*
 164          * Normal exit is with (arg_types == 0) at end of argument list.
 165          * Function will return an exception from within the loop upon
 166          * finding an entry which is not (or cannot be converted
 167          * to) the required type; if stack underflows; or upon
 168          * finding a NULL stack entry (which should not happen).
 169          */
 170         while (GET_CURRENT_ARG_TYPE(arg_types)) {
 171                 if (!stack_ptr || !*stack_ptr) {
 172                         ACPI_REPORT_ERROR(("resolve_operands: Null stack entry at %p\n", stack_ptr));
 173
 174                         return_ACPI_STATUS(AE_AML_INTERNAL);
 175                 }
 176
 177                 /* Extract useful items */
 178
 179                 obj_desc = *stack_ptr;
 180
 181                 /* Decode the descriptor type */
 182
 183                 switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
 184                 case ACPI_DESC_TYPE_NAMED:
 185
 186                         /* Namespace Node */
 187
 188                         object_type =
 189                             ((struct acpi_namespace_node *)obj_desc)->type;
 190                         break;
 191
 192                 case ACPI_DESC_TYPE_OPERAND:
 193
 194                         /* ACPI internal object */
 195
 196                         object_type = ACPI_GET_OBJECT_TYPE(obj_desc);
 197
 198                         /* Check for bad acpi_object_type */
 199
 200                         if (!acpi_ut_valid_object_type(object_type)) {
 201                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 202                                                   "Bad operand object type [%X]\n",
 203                                                   object_type));
 204
 205                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 206                         }
 207
 208                         if (object_type == (u8) ACPI_TYPE_LOCAL_REFERENCE) {
 209                                 /* Decode the Reference */
 210
 211                                 op_info = acpi_ps_get_opcode_info(opcode);
 212                                 if (op_info->class == AML_CLASS_UNKNOWN) {
 213                                         return_ACPI_STATUS(AE_AML_BAD_OPCODE);
 214                                 }
 215
 216                                 switch (obj_desc->reference.opcode) {
 217                                 case AML_DEBUG_OP:
 218                                         target_op = AML_DEBUG_OP;
 219
 220                                         /*lint -fallthrough */
 221
 222                                 case AML_NAME_OP:
 223                                 case AML_INDEX_OP:
 224                                 case AML_REF_OF_OP:
 225                                 case AML_ARG_OP:
 226                                 case AML_LOCAL_OP:
 227                                 case AML_LOAD_OP:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
 228                                 case AML_INT_NAMEPATH_OP:       /* Reference to a named object */
 229
 230                                         ACPI_DEBUG_ONLY_MEMBERS(ACPI_DEBUG_PRINT
 231                                                                 ((ACPI_DB_EXEC,
 232                                                                   "Operand is a Reference, ref_opcode [%s]\n",
 233                                                                   (acpi_ps_get_opcode_info
 234                                                                    (obj_desc->
 235                                                                     reference.
 236                                                                     opcode))->
 237                                                                   name)));
 238                                         break;
 239
 240                                 default:
 241                                         ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 242                                                           "Operand is a Reference, Unknown Reference Opcode %X [%s]\n",
 243                                                           obj_desc->reference.
 244                                                           opcode,
 245                                                           (acpi_ps_get_opcode_info
 246                                                            (obj_desc->reference.
 247                                                             opcode))->name));
 248
 249                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 250                                 }
 251                         }
 252                         break;
 253
 254                 default:
 255
 256                         /* Invalid descriptor */
 257
 258                         ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 259                                           "Invalid descriptor %p [%s]\n",
 260                                           obj_desc,
 261                                           acpi_ut_get_descriptor_name
 262                                           (obj_desc)));
 263
 264                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 265                 }
 266
 267                 /* Get one argument type, point to the next */
 268
 269                 this_arg_type = GET_CURRENT_ARG_TYPE(arg_types);
 270                 INCREMENT_ARG_LIST(arg_types);
 271
 272                 /*
 273                  * Handle cases where the object does not need to be
 274                  * resolved to a value
 275                  */
 276                 switch (this_arg_type) {
 277                 case ARGI_REF_OR_STRING:        /* Can be a String or Reference */
 278
 279                         if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 280                              ACPI_DESC_TYPE_OPERAND)
 281                             && (ACPI_GET_OBJECT_TYPE(obj_desc) ==
 282                                 ACPI_TYPE_STRING)) {
 283                                 /*
 284                                  * String found - the string references a named object and
 285                                  * must be resolved to a node
 286                                  */
 287                                 goto next_operand;
 288                         }
 289
 290                         /*
 291                          * Else not a string - fall through to the normal Reference
 292                          * case below
 293                          */
 294                         /*lint -fallthrough */
 295
 296                 case ARGI_REFERENCE:    /* References: */
 297                 case ARGI_INTEGER_REF:
 298                 case ARGI_OBJECT_REF:
 299                 case ARGI_DEVICE_REF:
 300                 case ARGI_TARGETREF:    /* Allows implicit conversion rules before store */
 301                 case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
 302                 case ARGI_SIMPLE_TARGET:        /* Name, Local, or Arg - no implicit conversion  */
 303
 304                         /*
 305                          * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
 306                          * A Namespace Node is OK as-is
 307                          */
 308                         if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 309                             ACPI_DESC_TYPE_NAMED) {
 310                                 goto next_operand;
 311                         }
 312
 313                         status =
 314                             acpi_ex_check_object_type(ACPI_TYPE_LOCAL_REFERENCE,
 315                                                       object_type, obj_desc);
 316                         if (ACPI_FAILURE(status)) {
 317                                 return_ACPI_STATUS(status);
 318                         }
 319
 320                         if (obj_desc->reference.opcode == AML_NAME_OP) {
 321                                 /* Convert a named reference to the actual named object */
 322
 323                                 temp_node = obj_desc->reference.object;
 324                                 acpi_ut_remove_reference(obj_desc);
 325                                 (*stack_ptr) = temp_node;
 326                         }
 327                         goto next_operand;
 328
 329                 case ARGI_DATAREFOBJ:   /* Store operator only */
 330
 331                         /*
 332                          * We don't want to resolve index_op reference objects during
 333                          * a store because this would be an implicit de_ref_of operation.
 334                          * Instead, we just want to store the reference object.
 335                          * -- All others must be resolved below.
 336                          */
 337                         if ((opcode == AML_STORE_OP) &&
 338                             (ACPI_GET_OBJECT_TYPE(*stack_ptr) ==
 339                              ACPI_TYPE_LOCAL_REFERENCE)
 340                             && ((*stack_ptr)->reference.opcode ==
 341                                 AML_INDEX_OP)) {
 342                                 goto next_operand;
 343                         }
 344                         break;
 345
 346                 default:
 347                         /* All cases covered above */
 348                         break;
 349                 }
 350
 351                 /*
 352                  * Resolve this object to a value
 353                  */
 354                 status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
 355                 if (ACPI_FAILURE(status)) {
 356                         return_ACPI_STATUS(status);
 357                 }
 358
 359                 /* Get the resolved object */
 360
 361                 obj_desc = *stack_ptr;
 362
 363                 /*
 364                  * Check the resulting object (value) type
 365                  */
 366                 switch (this_arg_type) {
 367                         /*
 368                          * For the simple cases, only one type of resolved object
 369                          * is allowed
 370                          */
 371                 case ARGI_MUTEX:
 372
 373                         /* Need an operand of type ACPI_TYPE_MUTEX */
 374
 375                         type_needed = ACPI_TYPE_MUTEX;
 376                         break;
 377
 378                 case ARGI_EVENT:
 379
 380                         /* Need an operand of type ACPI_TYPE_EVENT */
 381
 382                         type_needed = ACPI_TYPE_EVENT;
 383                         break;
 384
 385                 case ARGI_PACKAGE:      /* Package */
 386
 387                         /* Need an operand of type ACPI_TYPE_PACKAGE */
 388
 389                         type_needed = ACPI_TYPE_PACKAGE;
 390                         break;
 391
 392                 case ARGI_ANYTYPE:
 393
 394                         /* Any operand type will do */
 395
 396                         type_needed = ACPI_TYPE_ANY;
 397                         break;
 398
 399                 case ARGI_DDBHANDLE:
 400
 401                         /* Need an operand of type ACPI_TYPE_DDB_HANDLE */
 402
 403                         type_needed = ACPI_TYPE_LOCAL_REFERENCE;
 404                         break;
 405
 406                         /*
 407                          * The more complex cases allow multiple resolved object types
 408                          */
 409                 case ARGI_INTEGER:
 410
 411                         /*
 412                          * Need an operand of type ACPI_TYPE_INTEGER,
 413                          * But we can implicitly convert from a STRING or BUFFER
 414                          * Aka - "Implicit Source Operand Conversion"
 415                          */
 416                         status =
 417                             acpi_ex_convert_to_integer(obj_desc, stack_ptr, 16);
 418                         if (ACPI_FAILURE(status)) {
 419                                 if (status == AE_TYPE) {
 420                                         ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 421                                                           "Needed [Integer/String/Buffer], found [%s] %p\n",
 422                                                           acpi_ut_get_object_type_name
 423                                                           (obj_desc),
 424                                                           obj_desc));
 425
 426                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 427                                 }
 428
 429                                 return_ACPI_STATUS(status);
 430                         }
 431
 432                         if (obj_desc != *stack_ptr) {
 433                                 acpi_ut_remove_reference(obj_desc);
 434                         }
 435                         goto next_operand;
 436
 437                 case ARGI_BUFFER:
 438
 439                         /*
 440                          * Need an operand of type ACPI_TYPE_BUFFER,
 441                          * But we can implicitly convert from a STRING or INTEGER
 442                          * Aka - "Implicit Source Operand Conversion"
 443                          */
 444                         status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
 445                         if (ACPI_FAILURE(status)) {
 446                                 if (status == AE_TYPE) {
 447                                         ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 448                                                           "Needed [Integer/String/Buffer], found [%s] %p\n",
 449                                                           acpi_ut_get_object_type_name
 450                                                           (obj_desc),
 451                                                           obj_desc));
 452
 453                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 454                                 }
 455
 456                                 return_ACPI_STATUS(status);
 457                         }
 458
 459                         if (obj_desc != *stack_ptr) {
 460                                 acpi_ut_remove_reference(obj_desc);
 461                         }
 462                         goto next_operand;
 463
 464                 case ARGI_STRING:
 465
 466                         /*
 467                          * Need an operand of type ACPI_TYPE_STRING,
 468                          * But we can implicitly convert from a BUFFER or INTEGER
 469                          * Aka - "Implicit Source Operand Conversion"
 470                          */
 471                         status = acpi_ex_convert_to_string(obj_desc, stack_ptr,
 472                                                            ACPI_IMPLICIT_CONVERT_HEX);
 473                         if (ACPI_FAILURE(status)) {
 474                                 if (status == AE_TYPE) {
 475                                         ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 476                                                           "Needed [Integer/String/Buffer], found [%s] %p\n",
 477                                                           acpi_ut_get_object_type_name
 478                                                           (obj_desc),
 479                                                           obj_desc));
 480
 481                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 482                                 }
 483
 484                                 return_ACPI_STATUS(status);
 485                         }
 486
 487                         if (obj_desc != *stack_ptr) {
 488                                 acpi_ut_remove_reference(obj_desc);
 489                         }
 490                         goto next_operand;
 491
 492                 case ARGI_COMPUTEDATA:
 493
 494                         /* Need an operand of type INTEGER, STRING or BUFFER */
 495
 496                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 497                         case ACPI_TYPE_INTEGER:
 498                         case ACPI_TYPE_STRING:
 499                         case ACPI_TYPE_BUFFER:
 500
 501                                 /* Valid operand */
 502                                 break;
 503
 504                         default:
 505                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 506                                                   "Needed [Integer/String/Buffer], found [%s] %p\n",
 507                                                   acpi_ut_get_object_type_name
 508                                                   (obj_desc), obj_desc));
 509
 510                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 511                         }
 512                         goto next_operand;
 513
 514                 case ARGI_BUFFER_OR_STRING:
 515
 516                         /* Need an operand of type STRING or BUFFER */
 517
 518                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 519                         case ACPI_TYPE_STRING:
 520                         case ACPI_TYPE_BUFFER:
 521
 522                                 /* Valid operand */
 523                                 break;
 524
 525                         case ACPI_TYPE_INTEGER:
 526
 527                                 /* Highest priority conversion is to type Buffer */
 528
 529                                 status =
 530                                     acpi_ex_convert_to_buffer(obj_desc,
 531                                                               stack_ptr);
 532                                 if (ACPI_FAILURE(status)) {
 533                                         return_ACPI_STATUS(status);
 534                                 }
 535
 536                                 if (obj_desc != *stack_ptr) {
 537                                         acpi_ut_remove_reference(obj_desc);
 538                                 }
 539                                 break;
 540
 541                         default:
 542                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 543                                                   "Needed [Integer/String/Buffer], found [%s] %p\n",
 544                                                   acpi_ut_get_object_type_name
 545                                                   (obj_desc), obj_desc));
 546
 547                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 548                         }
 549                         goto next_operand;
 550
 551                 case ARGI_DATAOBJECT:
 552                         /*
 553                          * ARGI_DATAOBJECT is only used by the size_of operator.
 554                          * Need a buffer, string, package, or ref_of reference.
 555                          *
 556                          * The only reference allowed here is a direct reference to
 557                          * a namespace node.
 558                          */
 559                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 560                         case ACPI_TYPE_PACKAGE:
 561                         case ACPI_TYPE_STRING:
 562                         case ACPI_TYPE_BUFFER:
 563                         case ACPI_TYPE_LOCAL_REFERENCE:
 564
 565                                 /* Valid operand */
 566                                 break;
 567
 568                         default:
 569                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 570                                                   "Needed [Buffer/String/Package/Reference], found [%s] %p\n",
 571                                                   acpi_ut_get_object_type_name
 572                                                   (obj_desc), obj_desc));
 573
 574                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 575                         }
 576                         goto next_operand;
 577
 578                 case ARGI_COMPLEXOBJ:
 579
 580                         /* Need a buffer or package or (ACPI 2.0) String */
 581
 582                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 583                         case ACPI_TYPE_PACKAGE:
 584                         case ACPI_TYPE_STRING:
 585                         case ACPI_TYPE_BUFFER:
 586
 587                                 /* Valid operand */
 588                                 break;
 589
 590                         default:
 591                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 592                                                   "Needed [Buffer/String/Package], found [%s] %p\n",
 593                                                   acpi_ut_get_object_type_name
 594                                                   (obj_desc), obj_desc));
 595
 596                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 597                         }
 598                         goto next_operand;
 599
 600                 case ARGI_REGION_OR_FIELD:
 601
 602                         /* Need an operand of type REGION or a FIELD in a region */
 603
 604                         switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 605                         case ACPI_TYPE_REGION:
 606                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 607                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 608                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 609
 610                                 /* Valid operand */
 611                                 break;
 612
 613                         default:
 614                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 615                                                   "Needed [Region/region_field], found [%s] %p\n",
 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                                         /* Allow store of any object to the Debug object */
 655
 656                                         break;
 657                                 }
 658
 659                                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 660                                                   "Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p\n",
 661                                                   acpi_ut_get_object_type_name
 662                                                   (obj_desc), obj_desc));
 663
 664                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 665                         }
 666                         goto next_operand;
 667
 668                 default:
 669
 670                         /* Unknown type */
 671
 672                         ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 673                                           "Internal - Unknown ARGI (required operand) type %X\n",
 674                                           this_arg_type));
 675
 676                         return_ACPI_STATUS(AE_BAD_PARAMETER);
 677                 }
 678
 679                 /*
 680                  * Make sure that the original object was resolved to the
 681                  * required object type (Simple cases only).
 682                  */
 683                 status = acpi_ex_check_object_type(type_needed,
 684                                                    ACPI_GET_OBJECT_TYPE
 685                                                    (*stack_ptr), *stack_ptr);
 686                 if (ACPI_FAILURE(status)) {
 687                         return_ACPI_STATUS(status);
 688                 }
 689
 690               next_operand:
 691                 /*
 692                  * If more operands needed, decrement stack_ptr to point
 693                  * to next operand on stack
 694                  */
 695                 if (GET_CURRENT_ARG_TYPE(arg_types)) {
 696                         stack_ptr--;
 697                 }
 698         }
 699
 700         return_ACPI_STATUS(status);
 701 }