reactos/drivers/bus/acpi/acpica/executer/exoparg2.c

   1 /******************************************************************************
   2  *
   3  * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
   4  *
   5  *****************************************************************************/
   6
   7 /******************************************************************************
   8  *
   9  * 1. Copyright Notice
  10  *
  11  * Some or all of this work - Copyright (c) 1999 - 2015, Intel Corp.
  12  * All rights reserved.
  13  *
  14  * 2. License
  15  *
  16  * 2.1. This is your license from Intel Corp. under its intellectual property
  17  * rights. You may have additional license terms from the party that provided
  18  * you this software, covering your right to use that party's intellectual
  19  * property rights.
  20  *
  21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  22  * copy of the source code appearing in this file ("Covered Code") an
  23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  24  * base code distributed originally by Intel ("Original Intel Code") to copy,
  25  * make derivatives, distribute, use and display any portion of the Covered
  26  * Code in any form, with the right to sublicense such rights; and
  27  *
  28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  29  * license (with the right to sublicense), under only those claims of Intel
  30  * patents that are infringed by the Original Intel Code, to make, use, sell,
  31  * offer to sell, and import the Covered Code and derivative works thereof
  32  * solely to the minimum extent necessary to exercise the above copyright
  33  * license, and in no event shall the patent license extend to any additions
  34  * to or modifications of the Original Intel Code. No other license or right
  35  * is granted directly or by implication, estoppel or otherwise;
  36  *
  37  * The above copyright and patent license is granted only if the following
  38  * conditions are met:
  39  *
  40  * 3. Conditions
  41  *
  42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  43  * Redistribution of source code of any substantial portion of the Covered
  44  * Code or modification with rights to further distribute source must include
  45  * the above Copyright Notice, the above License, this list of Conditions,
  46  * and the following Disclaimer and Export Compliance provision. In addition,
  47  * Licensee must cause all Covered Code to which Licensee contributes to
  48  * contain a file documenting the changes Licensee made to create that Covered
  49  * Code and the date of any change. Licensee must include in that file the
  50  * documentation of any changes made by any predecessor Licensee. Licensee
  51  * must include a prominent statement that the modification is derived,
  52  * directly or indirectly, from Original Intel Code.
  53  *
  54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  55  * Redistribution of source code of any substantial portion of the Covered
  56  * Code or modification without rights to further distribute source must
  57  * include the following Disclaimer and Export Compliance provision in the
  58  * documentation and/or other materials provided with distribution. In
  59  * addition, Licensee may not authorize further sublicense of source of any
  60  * portion of the Covered Code, and must include terms to the effect that the
  61  * license from Licensee to its licensee is limited to the intellectual
  62  * property embodied in the software Licensee provides to its licensee, and
  63  * not to intellectual property embodied in modifications its licensee may
  64  * make.
  65  *
  66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  67  * substantial portion of the Covered Code or modification must reproduce the
  68  * above Copyright Notice, and the following Disclaimer and Export Compliance
  69  * provision in the documentation and/or other materials provided with the
  70  * distribution.
  71  *
  72  * 3.4. Intel retains all right, title, and interest in and to the Original
  73  * Intel Code.
  74  *
  75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  76  * Intel shall be used in advertising or otherwise to promote the sale, use or
  77  * other dealings in products derived from or relating to the Covered Code
  78  * without prior written authorization from Intel.
  79  *
  80  * 4. Disclaimer and Export Compliance
  81  *
  82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
  85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
  86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
  87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  88  * PARTICULAR PURPOSE.
  89  *
  90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
  96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  97  * LIMITED REMEDY.
  98  *
  99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
 100  * software or system incorporating such software without first obtaining any
 101  * required license or other approval from the U. S. Department of Commerce or
 102  * any other agency or department of the United States Government. In the
 103  * event Licensee exports any such software from the United States or
 104  * re-exports any such software from a foreign destination, Licensee shall
 105  * ensure that the distribution and export/re-export of the software is in
 106  * compliance with all laws, regulations, orders, or other restrictions of the
 107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 108  * any of its subsidiaries will export/re-export any technical data, process,
 109  * software, or service, directly or indirectly, to any country for which the
 110  * United States government or any agency thereof requires an export license,
 111  * other governmental approval, or letter of assurance, without first obtaining
 112  * such license, approval or letter.
 113  *
 114  *****************************************************************************/
 115
 116 #include "acpi.h"
 117 #include "accommon.h"
 118 #include "acparser.h"
 119 #include "acinterp.h"
 120 #include "acevents.h"
 121 #include "amlcode.h"
 122
 123
 124 #define _COMPONENT          ACPI_EXECUTER
 125         ACPI_MODULE_NAME    ("exoparg2")
 126
 127
 128 /*!
 129  * Naming convention for AML interpreter execution routines.
 130  *
 131  * The routines that begin execution of AML opcodes are named with a common
 132  * convention based upon the number of arguments, the number of target operands,
 133  * and whether or not a value is returned:
 134  *
 135  *      AcpiExOpcode_xA_yT_zR
 136  *
 137  * Where:
 138  *
 139  * xA - ARGUMENTS:    The number of arguments (input operands) that are
 140  *                    required for this opcode type (1 through 6 args).
 141  * yT - TARGETS:      The number of targets (output operands) that are required
 142  *                    for this opcode type (0, 1, or 2 targets).
 143  * zR - RETURN VALUE: Indicates whether this opcode type returns a value
 144  *                    as the function return (0 or 1).
 145  *
 146  * The AcpiExOpcode* functions are called via the Dispatcher component with
 147  * fully resolved operands.
 148 !*/
 149
 150
 151 /*******************************************************************************
 152  *
 153  * FUNCTION:    AcpiExOpcode_2A_0T_0R
 154  *
 155  * PARAMETERS:  WalkState           - Current walk state
 156  *
 157  * RETURN:      Status
 158  *
 159  * DESCRIPTION: Execute opcode with two arguments, no target, and no return
 160  *              value.
 161  *
 162  * ALLOCATION:  Deletes both operands
 163  *
 164  ******************************************************************************/
 165
 166 ACPI_STATUS
 167 AcpiExOpcode_2A_0T_0R (
 168     ACPI_WALK_STATE         *WalkState)
 169 {
 170     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 171     ACPI_NAMESPACE_NODE     *Node;
 172     UINT32                  Value;
 173     ACPI_STATUS             Status = AE_OK;
 174
 175
 176     ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
 177             AcpiPsGetOpcodeName (WalkState->Opcode));
 178
 179
 180     /* Examine the opcode */
 181
 182     switch (WalkState->Opcode)
 183     {
 184     case AML_NOTIFY_OP:         /* Notify (NotifyObject, NotifyValue) */
 185
 186         /* The first operand is a namespace node */
 187
 188         Node = (ACPI_NAMESPACE_NODE *) Operand[0];
 189
 190         /* Second value is the notify value */
 191
 192         Value = (UINT32) Operand[1]->Integer.Value;
 193
 194         /* Are notifies allowed on this object? */
 195
 196         if (!AcpiEvIsNotifyObject (Node))
 197         {
 198             ACPI_ERROR ((AE_INFO,
 199                 "Unexpected notify object type [%s]",
 200                 AcpiUtGetTypeName (Node->Type)));
 201
 202             Status = AE_AML_OPERAND_TYPE;
 203             break;
 204         }
 205
 206         /*
 207          * Dispatch the notify to the appropriate handler
 208          * NOTE: the request is queued for execution after this method
 209          * completes. The notify handlers are NOT invoked synchronously
 210          * from this thread -- because handlers may in turn run other
 211          * control methods.
 212          */
 213         Status = AcpiEvQueueNotifyRequest (Node, Value);
 214         break;
 215
 216     default:
 217
 218         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 219             WalkState->Opcode));
 220         Status = AE_AML_BAD_OPCODE;
 221     }
 222
 223     return_ACPI_STATUS (Status);
 224 }
 225
 226
 227 /*******************************************************************************
 228  *
 229  * FUNCTION:    AcpiExOpcode_2A_2T_1R
 230  *
 231  * PARAMETERS:  WalkState           - Current walk state
 232  *
 233  * RETURN:      Status
 234  *
 235  * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets
 236  *              and one implicit return value.
 237  *
 238  ******************************************************************************/
 239
 240 ACPI_STATUS
 241 AcpiExOpcode_2A_2T_1R (
 242     ACPI_WALK_STATE         *WalkState)
 243 {
 244     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 245     ACPI_OPERAND_OBJECT     *ReturnDesc1 = NULL;
 246     ACPI_OPERAND_OBJECT     *ReturnDesc2 = NULL;
 247     ACPI_STATUS             Status;
 248
 249
 250     ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R,
 251         AcpiPsGetOpcodeName (WalkState->Opcode));
 252
 253
 254     /* Execute the opcode */
 255
 256     switch (WalkState->Opcode)
 257     {
 258     case AML_DIVIDE_OP:
 259
 260         /* Divide (Dividend, Divisor, RemainderResult QuotientResult) */
 261
 262         ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 263         if (!ReturnDesc1)
 264         {
 265             Status = AE_NO_MEMORY;
 266             goto Cleanup;
 267         }
 268
 269         ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 270         if (!ReturnDesc2)
 271         {
 272             Status = AE_NO_MEMORY;
 273             goto Cleanup;
 274         }
 275
 276         /* Quotient to ReturnDesc1, remainder to ReturnDesc2 */
 277
 278         Status = AcpiUtDivide (
 279             Operand[0]->Integer.Value,
 280             Operand[1]->Integer.Value,
 281             &ReturnDesc1->Integer.Value,
 282             &ReturnDesc2->Integer.Value);
 283         if (ACPI_FAILURE (Status))
 284         {
 285             goto Cleanup;
 286         }
 287         break;
 288
 289     default:
 290
 291         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 292             WalkState->Opcode));
 293
 294         Status = AE_AML_BAD_OPCODE;
 295         goto Cleanup;
 296     }
 297
 298     /* Store the results to the target reference operands */
 299
 300     Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
 301     if (ACPI_FAILURE (Status))
 302     {
 303         goto Cleanup;
 304     }
 305
 306     Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
 307     if (ACPI_FAILURE (Status))
 308     {
 309         goto Cleanup;
 310     }
 311
 312 Cleanup:
 313     /*
 314      * Since the remainder is not returned indirectly, remove a reference to
 315      * it. Only the quotient is returned indirectly.
 316      */
 317     AcpiUtRemoveReference (ReturnDesc2);
 318
 319     if (ACPI_FAILURE (Status))
 320     {
 321         /* Delete the return object */
 322
 323         AcpiUtRemoveReference (ReturnDesc1);
 324     }
 325
 326     /* Save return object (the remainder) on success */
 327
 328     else
 329     {
 330         WalkState->ResultObj = ReturnDesc1;
 331     }
 332
 333     return_ACPI_STATUS (Status);
 334 }
 335
 336
 337 /*******************************************************************************
 338  *
 339  * FUNCTION:    AcpiExOpcode_2A_1T_1R
 340  *
 341  * PARAMETERS:  WalkState           - Current walk state
 342  *
 343  * RETURN:      Status
 344  *
 345  * DESCRIPTION: Execute opcode with two arguments, one target, and a return
 346  *              value.
 347  *
 348  ******************************************************************************/
 349
 350 ACPI_STATUS
 351 AcpiExOpcode_2A_1T_1R (
 352     ACPI_WALK_STATE         *WalkState)
 353 {
 354     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 355     ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
 356     UINT64                  Index;
 357     ACPI_STATUS             Status = AE_OK;
 358     ACPI_SIZE               Length = 0;
 359
 360
 361     ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
 362         AcpiPsGetOpcodeName (WalkState->Opcode));
 363
 364
 365     /* Execute the opcode */
 366
 367     if (WalkState->OpInfo->Flags & AML_MATH)
 368     {
 369         /* All simple math opcodes (add, etc.) */
 370
 371         ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 372         if (!ReturnDesc)
 373         {
 374             Status = AE_NO_MEMORY;
 375             goto Cleanup;
 376         }
 377
 378         ReturnDesc->Integer.Value = AcpiExDoMathOp (
 379             WalkState->Opcode,
 380             Operand[0]->Integer.Value,
 381             Operand[1]->Integer.Value);
 382         goto StoreResultToTarget;
 383     }
 384
 385     switch (WalkState->Opcode)
 386     {
 387     case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */
 388
 389         ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 390         if (!ReturnDesc)
 391         {
 392             Status = AE_NO_MEMORY;
 393             goto Cleanup;
 394         }
 395
 396         /* ReturnDesc will contain the remainder */
 397
 398         Status = AcpiUtDivide (
 399             Operand[0]->Integer.Value,
 400             Operand[1]->Integer.Value,
 401             NULL,
 402             &ReturnDesc->Integer.Value);
 403         break;
 404
 405     case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */
 406
 407         Status = AcpiExDoConcatenate (
 408             Operand[0], Operand[1], &ReturnDesc, WalkState);
 409         break;
 410
 411     case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
 412         /*
 413          * Input object is guaranteed to be a buffer at this point (it may have
 414          * been converted.)  Copy the raw buffer data to a new object of
 415          * type String.
 416          */
 417
 418         /*
 419          * Get the length of the new string. It is the smallest of:
 420          * 1) Length of the input buffer
 421          * 2) Max length as specified in the ToString operator
 422          * 3) Length of input buffer up to a zero byte (null terminator)
 423          *
 424          * NOTE: A length of zero is ok, and will create a zero-length, null
 425          *       terminated string.
 426          */
 427         while ((Length < Operand[0]->Buffer.Length) &&
 428                (Length < Operand[1]->Integer.Value) &&
 429                (Operand[0]->Buffer.Pointer[Length]))
 430         {
 431             Length++;
 432         }
 433
 434         /* Allocate a new string object */
 435
 436         ReturnDesc = AcpiUtCreateStringObject (Length);
 437         if (!ReturnDesc)
 438         {
 439             Status = AE_NO_MEMORY;
 440             goto Cleanup;
 441         }
 442
 443         /*
 444          * Copy the raw buffer data with no transform.
 445          * (NULL terminated already)
 446          */
 447         memcpy (ReturnDesc->String.Pointer,
 448             Operand[0]->Buffer.Pointer, Length);
 449         break;
 450
 451     case AML_CONCAT_RES_OP:
 452
 453         /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */
 454
 455         Status = AcpiExConcatTemplate (
 456             Operand[0], Operand[1], &ReturnDesc, WalkState);
 457         break;
 458
 459     case AML_INDEX_OP:              /* Index (Source Index Result) */
 460
 461         /* Create the internal return object */
 462
 463         ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
 464         if (!ReturnDesc)
 465         {
 466             Status = AE_NO_MEMORY;
 467             goto Cleanup;
 468         }
 469
 470         /* Initialize the Index reference object */
 471
 472         Index = Operand[1]->Integer.Value;
 473         ReturnDesc->Reference.Value = (UINT32) Index;
 474         ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;
 475
 476         /*
 477          * At this point, the Source operand is a String, Buffer, or Package.
 478          * Verify that the index is within range.
 479          */
 480         switch ((Operand[0])->Common.Type)
 481         {
 482         case ACPI_TYPE_STRING:
 483
 484             if (Index >= Operand[0]->String.Length)
 485             {
 486                 Length = Operand[0]->String.Length;
 487                 Status = AE_AML_STRING_LIMIT;
 488             }
 489
 490             ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
 491             ReturnDesc->Reference.IndexPointer =
 492                 &(Operand[0]->Buffer.Pointer [Index]);
 493             break;
 494
 495         case ACPI_TYPE_BUFFER:
 496
 497             if (Index >= Operand[0]->Buffer.Length)
 498             {
 499                 Length = Operand[0]->Buffer.Length;
 500                 Status = AE_AML_BUFFER_LIMIT;
 501             }
 502
 503             ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
 504             ReturnDesc->Reference.IndexPointer =
 505                 &(Operand[0]->Buffer.Pointer [Index]);
 506             break;
 507
 508         case ACPI_TYPE_PACKAGE:
 509
 510             if (Index >= Operand[0]->Package.Count)
 511             {
 512                 Length = Operand[0]->Package.Count;
 513                 Status = AE_AML_PACKAGE_LIMIT;
 514             }
 515
 516             ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
 517             ReturnDesc->Reference.Where =
 518                 &Operand[0]->Package.Elements [Index];
 519             break;
 520
 521         default:
 522
 523             Status = AE_AML_INTERNAL;
 524             goto Cleanup;
 525         }
 526
 527         /* Failure means that the Index was beyond the end of the object */
 528
 529         if (ACPI_FAILURE (Status))
 530         {
 531             ACPI_EXCEPTION ((AE_INFO, Status,
 532                 "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
 533                 ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
 534             goto Cleanup;
 535         }
 536
 537         /*
 538          * Save the target object and add a reference to it for the life
 539          * of the index
 540          */
 541         ReturnDesc->Reference.Object = Operand[0];
 542         AcpiUtAddReference (Operand[0]);
 543
 544         /* Store the reference to the Target */
 545
 546         Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
 547
 548         /* Return the reference */
 549
 550         WalkState->ResultObj = ReturnDesc;
 551         goto Cleanup;
 552
 553     default:
 554
 555         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 556             WalkState->Opcode));
 557         Status = AE_AML_BAD_OPCODE;
 558         break;
 559     }
 560
 561
 562 StoreResultToTarget:
 563
 564     if (ACPI_SUCCESS (Status))
 565     {
 566         /*
 567          * Store the result of the operation (which is now in ReturnDesc) into
 568          * the Target descriptor.
 569          */
 570         Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
 571         if (ACPI_FAILURE (Status))
 572         {
 573             goto Cleanup;
 574         }
 575
 576         if (!WalkState->ResultObj)
 577         {
 578             WalkState->ResultObj = ReturnDesc;
 579         }
 580     }
 581
 582
 583 Cleanup:
 584
 585     /* Delete return object on error */
 586
 587     if (ACPI_FAILURE (Status))
 588     {
 589         AcpiUtRemoveReference (ReturnDesc);
 590         WalkState->ResultObj = NULL;
 591     }
 592
 593     return_ACPI_STATUS (Status);
 594 }
 595
 596
 597 /*******************************************************************************
 598  *
 599  * FUNCTION:    AcpiExOpcode_2A_0T_1R
 600  *
 601  * PARAMETERS:  WalkState           - Current walk state
 602  *
 603  * RETURN:      Status
 604  *
 605  * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
 606  *
 607  ******************************************************************************/
 608
 609 ACPI_STATUS
 610 AcpiExOpcode_2A_0T_1R (
 611     ACPI_WALK_STATE         *WalkState)
 612 {
 613     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 614     ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
 615     ACPI_STATUS             Status = AE_OK;
 616     BOOLEAN                 LogicalResult = FALSE;
 617
 618
 619     ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R,
 620         AcpiPsGetOpcodeName (WalkState->Opcode));
 621
 622
 623     /* Create the internal return object */
 624
 625     ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 626     if (!ReturnDesc)
 627     {
 628         Status = AE_NO_MEMORY;
 629         goto Cleanup;
 630     }
 631
 632     /* Execute the Opcode */
 633
 634     if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC)
 635     {
 636         /* LogicalOp  (Operand0, Operand1) */
 637
 638         Status = AcpiExDoLogicalNumericOp (WalkState->Opcode,
 639             Operand[0]->Integer.Value, Operand[1]->Integer.Value,
 640             &LogicalResult);
 641         goto StoreLogicalResult;
 642     }
 643     else if (WalkState->OpInfo->Flags & AML_LOGICAL)
 644     {
 645         /* LogicalOp  (Operand0, Operand1) */
 646
 647         Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0],
 648             Operand[1], &LogicalResult);
 649         goto StoreLogicalResult;
 650     }
 651
 652     switch (WalkState->Opcode)
 653     {
 654     case AML_ACQUIRE_OP:            /* Acquire (MutexObject, Timeout) */
 655
 656         Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState);
 657         if (Status == AE_TIME)
 658         {
 659             LogicalResult = TRUE;       /* TRUE = Acquire timed out */
 660             Status = AE_OK;
 661         }
 662         break;
 663
 664
 665     case AML_WAIT_OP:               /* Wait (EventObject, Timeout) */
 666
 667         Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]);
 668         if (Status == AE_TIME)
 669         {
 670             LogicalResult = TRUE;       /* TRUE, Wait timed out */
 671             Status = AE_OK;
 672         }
 673         break;
 674
 675     default:
 676
 677         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 678             WalkState->Opcode));
 679
 680         Status = AE_AML_BAD_OPCODE;
 681         goto Cleanup;
 682     }
 683
 684
 685 StoreLogicalResult:
 686     /*
 687      * Set return value to according to LogicalResult. logical TRUE (all ones)
 688      * Default is FALSE (zero)
 689      */
 690     if (LogicalResult)
 691     {
 692         ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
 693     }
 694
 695 Cleanup:
 696
 697     /* Delete return object on error */
 698
 699     if (ACPI_FAILURE (Status))
 700     {
 701         AcpiUtRemoveReference (ReturnDesc);
 702     }
 703
 704     /* Save return object on success */
 705
 706     else
 707     {
 708         WalkState->ResultObj = ReturnDesc;
 709     }
 710
 711     return_ACPI_STATUS (Status);
 712 }