drivers/acpi/acpica/exresop.c

   1 /******************************************************************************
   2  *
   3  * Module Name: exresop - AML Interpreter operand/object resolution
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "amlcode.h"
  47 #include "acparser.h"
  48 #include "acinterp.h"
  49 #include "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 0x%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 = obj_desc->common.type;
 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 [0x%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                                 /* Validate the Reference */
 229
 230                                 switch (obj_desc->reference.class) {
 231                                 case ACPI_REFCLASS_DEBUG:
 232
 233                                         target_op = AML_DEBUG_OP;
 234
 235                                         /*lint -fallthrough */
 236
 237                                 case ACPI_REFCLASS_ARG:
 238                                 case ACPI_REFCLASS_LOCAL:
 239                                 case ACPI_REFCLASS_INDEX:
 240                                 case ACPI_REFCLASS_REFOF:
 241                                 case ACPI_REFCLASS_TABLE:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
 242                                 case ACPI_REFCLASS_NAME:        /* Reference to a named object */
 243
 244                                         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 245                                                           "Operand is a Reference, Class [%s] %2.2X\n",
 246                                                           acpi_ut_get_reference_name
 247                                                           (obj_desc),
 248                                                           obj_desc->reference.
 249                                                           class));
 250                                         break;
 251
 252                                 default:
 253
 254                                         ACPI_ERROR((AE_INFO,
 255                                                     "Unknown Reference Class 0x%2.2X in %p",
 256                                                     obj_desc->reference.class,
 257                                                     obj_desc));
 258
 259                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 260                                 }
 261                         }
 262                         break;
 263
 264                 default:
 265
 266                         /* Invalid descriptor */
 267
 268                         ACPI_ERROR((AE_INFO, "Invalid descriptor %p [%s]",
 269                                     obj_desc,
 270                                     acpi_ut_get_descriptor_name(obj_desc)));
 271
 272                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 273                 }
 274
 275                 /* Get one argument type, point to the next */
 276
 277                 this_arg_type = GET_CURRENT_ARG_TYPE(arg_types);
 278                 INCREMENT_ARG_LIST(arg_types);
 279
 280                 /*
 281                  * Handle cases where the object does not need to be
 282                  * resolved to a value
 283                  */
 284                 switch (this_arg_type) {
 285                 case ARGI_REF_OR_STRING:        /* Can be a String or Reference */
 286
 287                         if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 288                              ACPI_DESC_TYPE_OPERAND)
 289                             && (obj_desc->common.type == ACPI_TYPE_STRING)) {
 290                                 /*
 291                                  * String found - the string references a named object and
 292                                  * must be resolved to a node
 293                                  */
 294                                 goto next_operand;
 295                         }
 296
 297                         /*
 298                          * Else not a string - fall through to the normal Reference
 299                          * case below
 300                          */
 301                         /*lint -fallthrough */
 302
 303                 case ARGI_REFERENCE:    /* References: */
 304                 case ARGI_INTEGER_REF:
 305                 case ARGI_OBJECT_REF:
 306                 case ARGI_DEVICE_REF:
 307                 case ARGI_TARGETREF:    /* Allows implicit conversion rules before store */
 308                 case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
 309                 case ARGI_SIMPLE_TARGET:        /* Name, Local, or arg - no implicit conversion  */
 310                 case ARGI_STORE_TARGET:
 311
 312                         /*
 313                          * Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
 314                          * A Namespace Node is OK as-is
 315                          */
 316                         if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
 317                             ACPI_DESC_TYPE_NAMED) {
 318                                 goto next_operand;
 319                         }
 320
 321                         status =
 322                             acpi_ex_check_object_type(ACPI_TYPE_LOCAL_REFERENCE,
 323                                                       object_type, obj_desc);
 324                         if (ACPI_FAILURE(status)) {
 325                                 return_ACPI_STATUS(status);
 326                         }
 327                         goto next_operand;
 328
 329                 case ARGI_DATAREFOBJ:   /* Store operator only */
 330                         /*
 331                          * We don't want to resolve index_op reference objects during
 332                          * a store because this would be an implicit de_ref_of operation.
 333                          * Instead, we just want to store the reference object.
 334                          * -- All others must be resolved below.
 335                          */
 336                         if ((opcode == AML_STORE_OP) &&
 337                             ((*stack_ptr)->common.type ==
 338                              ACPI_TYPE_LOCAL_REFERENCE)
 339                             && ((*stack_ptr)->reference.class ==
 340                                 ACPI_REFCLASS_INDEX)) {
 341                                 goto next_operand;
 342                         }
 343                         break;
 344
 345                 default:
 346
 347                         /* All cases covered above */
 348
 349                         break;
 350                 }
 351
 352                 /*
 353                  * Resolve this object to a value
 354                  */
 355                 status = acpi_ex_resolve_to_value(stack_ptr, walk_state);
 356                 if (ACPI_FAILURE(status)) {
 357                         return_ACPI_STATUS(status);
 358                 }
 359
 360                 /* Get the resolved object */
 361
 362                 obj_desc = *stack_ptr;
 363
 364                 /*
 365                  * Check the resulting object (value) type
 366                  */
 367                 switch (this_arg_type) {
 368                         /*
 369                          * For the simple cases, only one type of resolved object
 370                          * is allowed
 371                          */
 372                 case ARGI_MUTEX:
 373
 374                         /* Need an operand of type ACPI_TYPE_MUTEX */
 375
 376                         type_needed = ACPI_TYPE_MUTEX;
 377                         break;
 378
 379                 case ARGI_EVENT:
 380
 381                         /* Need an operand of type ACPI_TYPE_EVENT */
 382
 383                         type_needed = ACPI_TYPE_EVENT;
 384                         break;
 385
 386                 case ARGI_PACKAGE:      /* Package */
 387
 388                         /* Need an operand of type ACPI_TYPE_PACKAGE */
 389
 390                         type_needed = ACPI_TYPE_PACKAGE;
 391                         break;
 392
 393                 case ARGI_ANYTYPE:
 394
 395                         /* Any operand type will do */
 396
 397                         type_needed = ACPI_TYPE_ANY;
 398                         break;
 399
 400                 case ARGI_DDBHANDLE:
 401
 402                         /* Need an operand of type ACPI_TYPE_DDB_HANDLE */
 403
 404                         type_needed = ACPI_TYPE_LOCAL_REFERENCE;
 405                         break;
 406
 407                         /*
 408                          * The more complex cases allow multiple resolved object types
 409                          */
 410                 case ARGI_INTEGER:
 411
 412                         /*
 413                          * Need an operand of type ACPI_TYPE_INTEGER,
 414                          * But we can implicitly convert from a STRING or BUFFER
 415                          * aka - "Implicit Source Operand Conversion"
 416                          */
 417                         status =
 418                             acpi_ex_convert_to_integer(obj_desc, stack_ptr, 16);
 419                         if (ACPI_FAILURE(status)) {
 420                                 if (status == AE_TYPE) {
 421                                         ACPI_ERROR((AE_INFO,
 422                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 423                                                     acpi_ut_get_object_type_name
 424                                                     (obj_desc), 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                          * Need an operand of type ACPI_TYPE_BUFFER,
 440                          * But we can implicitly convert from a STRING or INTEGER
 441                          * aka - "Implicit Source Operand Conversion"
 442                          */
 443                         status = acpi_ex_convert_to_buffer(obj_desc, stack_ptr);
 444                         if (ACPI_FAILURE(status)) {
 445                                 if (status == AE_TYPE) {
 446                                         ACPI_ERROR((AE_INFO,
 447                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 448                                                     acpi_ut_get_object_type_name
 449                                                     (obj_desc), obj_desc));
 450
 451                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 452                                 }
 453
 454                                 return_ACPI_STATUS(status);
 455                         }
 456
 457                         if (obj_desc != *stack_ptr) {
 458                                 acpi_ut_remove_reference(obj_desc);
 459                         }
 460                         goto next_operand;
 461
 462                 case ARGI_STRING:
 463                         /*
 464                          * Need an operand of type ACPI_TYPE_STRING,
 465                          * But we can implicitly convert from a BUFFER or INTEGER
 466                          * aka - "Implicit Source Operand Conversion"
 467                          */
 468                         status = acpi_ex_convert_to_string(obj_desc, stack_ptr,
 469                                                            ACPI_IMPLICIT_CONVERT_HEX);
 470                         if (ACPI_FAILURE(status)) {
 471                                 if (status == AE_TYPE) {
 472                                         ACPI_ERROR((AE_INFO,
 473                                                     "Needed [Integer/String/Buffer], found [%s] %p",
 474                                                     acpi_ut_get_object_type_name
 475                                                     (obj_desc), obj_desc));
 476
 477                                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 478                                 }
 479
 480                                 return_ACPI_STATUS(status);
 481                         }
 482
 483                         if (obj_desc != *stack_ptr) {
 484                                 acpi_ut_remove_reference(obj_desc);
 485                         }
 486                         goto next_operand;
 487
 488                 case ARGI_COMPUTEDATA:
 489
 490                         /* Need an operand of type INTEGER, STRING or BUFFER */
 491
 492                         switch (obj_desc->common.type) {
 493                         case ACPI_TYPE_INTEGER:
 494                         case ACPI_TYPE_STRING:
 495                         case ACPI_TYPE_BUFFER:
 496
 497                                 /* Valid operand */
 498                                 break;
 499
 500                         default:
 501                                 ACPI_ERROR((AE_INFO,
 502                                             "Needed [Integer/String/Buffer], found [%s] %p",
 503                                             acpi_ut_get_object_type_name
 504                                             (obj_desc), obj_desc));
 505
 506                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 507                         }
 508                         goto next_operand;
 509
 510                 case ARGI_BUFFER_OR_STRING:
 511
 512                         /* Need an operand of type STRING or BUFFER */
 513
 514                         switch (obj_desc->common.type) {
 515                         case ACPI_TYPE_STRING:
 516                         case ACPI_TYPE_BUFFER:
 517
 518                                 /* Valid operand */
 519                                 break;
 520
 521                         case ACPI_TYPE_INTEGER:
 522
 523                                 /* Highest priority conversion is to type Buffer */
 524
 525                                 status =
 526                                     acpi_ex_convert_to_buffer(obj_desc,
 527                                                               stack_ptr);
 528                                 if (ACPI_FAILURE(status)) {
 529                                         return_ACPI_STATUS(status);
 530                                 }
 531
 532                                 if (obj_desc != *stack_ptr) {
 533                                         acpi_ut_remove_reference(obj_desc);
 534                                 }
 535                                 break;
 536
 537                         default:
 538                                 ACPI_ERROR((AE_INFO,
 539                                             "Needed [Integer/String/Buffer], found [%s] %p",
 540                                             acpi_ut_get_object_type_name
 541                                             (obj_desc), obj_desc));
 542
 543                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 544                         }
 545                         goto next_operand;
 546
 547                 case ARGI_DATAOBJECT:
 548                         /*
 549                          * ARGI_DATAOBJECT is only used by the size_of operator.
 550                          * Need a buffer, string, package, or ref_of reference.
 551                          *
 552                          * The only reference allowed here is a direct reference to
 553                          * a namespace node.
 554                          */
 555                         switch (obj_desc->common.type) {
 556                         case ACPI_TYPE_PACKAGE:
 557                         case ACPI_TYPE_STRING:
 558                         case ACPI_TYPE_BUFFER:
 559                         case ACPI_TYPE_LOCAL_REFERENCE:
 560
 561                                 /* Valid operand */
 562                                 break;
 563
 564                         default:
 565
 566                                 ACPI_ERROR((AE_INFO,
 567                                             "Needed [Buffer/String/Package/Reference], found [%s] %p",
 568                                             acpi_ut_get_object_type_name
 569                                             (obj_desc), obj_desc));
 570
 571                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 572                         }
 573                         goto next_operand;
 574
 575                 case ARGI_COMPLEXOBJ:
 576
 577                         /* Need a buffer or package or (ACPI 2.0) String */
 578
 579                         switch (obj_desc->common.type) {
 580                         case ACPI_TYPE_PACKAGE:
 581                         case ACPI_TYPE_STRING:
 582                         case ACPI_TYPE_BUFFER:
 583
 584                                 /* Valid operand */
 585                                 break;
 586
 587                         default:
 588
 589                                 ACPI_ERROR((AE_INFO,
 590                                             "Needed [Buffer/String/Package], found [%s] %p",
 591                                             acpi_ut_get_object_type_name
 592                                             (obj_desc), obj_desc));
 593
 594                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 595                         }
 596                         goto next_operand;
 597
 598                 case ARGI_REGION_OR_BUFFER:     /* Used by Load() only */
 599
 600                         /* Need an operand of type REGION or a BUFFER (which could be a resolved region field) */
 601
 602                         switch (obj_desc->common.type) {
 603                         case ACPI_TYPE_BUFFER:
 604                         case ACPI_TYPE_REGION:
 605
 606                                 /* Valid operand */
 607                                 break;
 608
 609                         default:
 610
 611                                 ACPI_ERROR((AE_INFO,
 612                                             "Needed [Region/Buffer], found [%s] %p",
 613                                             acpi_ut_get_object_type_name
 614                                             (obj_desc), obj_desc));
 615
 616                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 617                         }
 618                         goto next_operand;
 619
 620                 case ARGI_DATAREFOBJ:
 621
 622                         /* Used by the Store() operator only */
 623
 624                         switch (obj_desc->common.type) {
 625                         case ACPI_TYPE_INTEGER:
 626                         case ACPI_TYPE_PACKAGE:
 627                         case ACPI_TYPE_STRING:
 628                         case ACPI_TYPE_BUFFER:
 629                         case ACPI_TYPE_BUFFER_FIELD:
 630                         case ACPI_TYPE_LOCAL_REFERENCE:
 631                         case ACPI_TYPE_LOCAL_REGION_FIELD:
 632                         case ACPI_TYPE_LOCAL_BANK_FIELD:
 633                         case ACPI_TYPE_LOCAL_INDEX_FIELD:
 634                         case ACPI_TYPE_DDB_HANDLE:
 635
 636                                 /* Valid operand */
 637                                 break;
 638
 639                         default:
 640
 641                                 if (acpi_gbl_enable_interpreter_slack) {
 642                                         /*
 643                                          * Enable original behavior of Store(), allowing any and all
 644                                          * objects as the source operand. The ACPI spec does not
 645                                          * allow this, however.
 646                                          */
 647                                         break;
 648                                 }
 649
 650                                 if (target_op == AML_DEBUG_OP) {
 651
 652                                         /* Allow store of any object to the Debug object */
 653
 654                                         break;
 655                                 }
 656
 657                                 ACPI_ERROR((AE_INFO,
 658                                             "Needed Integer/Buffer/String/Package/Ref/Ddb], found [%s] %p",
 659                                             acpi_ut_get_object_type_name
 660                                             (obj_desc), obj_desc));
 661
 662                                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 663                         }
 664                         goto next_operand;
 665
 666                 default:
 667
 668                         /* Unknown type */
 669
 670                         ACPI_ERROR((AE_INFO,
 671                                     "Internal - Unknown ARGI (required operand) type 0x%X",
 672                                     this_arg_type));
 673
 674                         return_ACPI_STATUS(AE_BAD_PARAMETER);
 675                 }
 676
 677                 /*
 678                  * Make sure that the original object was resolved to the
 679                  * required object type (Simple cases only).
 680                  */
 681                 status = acpi_ex_check_object_type(type_needed,
 682                                                    (*stack_ptr)->common.type,
 683                                                    *stack_ptr);
 684                 if (ACPI_FAILURE(status)) {
 685                         return_ACPI_STATUS(status);
 686                 }
 687
 688 next_operand:
 689                 /*
 690                  * If more operands needed, decrement stack_ptr to point
 691                  * to next operand on stack
 692                  */
 693                 if (GET_CURRENT_ARG_TYPE(arg_types)) {
 694                         stack_ptr--;
 695                 }
 696         }
 697
 698         ACPI_DUMP_OPERANDS(walk_state->operands,
 699                            acpi_ps_get_opcode_name(opcode),
 700                            walk_state->num_operands);
 701
 702         return_ACPI_STATUS(status);
 703 }