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 - 2014, 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 (Operand[0]->Integer.Value,
 279                                Operand[1]->Integer.Value,
 280                                &ReturnDesc1->Integer.Value,
 281                                &ReturnDesc2->Integer.Value);
 282         if (ACPI_FAILURE (Status))
 283         {
 284             goto Cleanup;
 285         }
 286         break;
 287
 288     default:
 289
 290         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 291             WalkState->Opcode));
 292         Status = AE_AML_BAD_OPCODE;
 293         goto Cleanup;
 294     }
 295
 296     /* Store the results to the target reference operands */
 297
 298     Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
 299     if (ACPI_FAILURE (Status))
 300     {
 301         goto Cleanup;
 302     }
 303
 304     Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
 305     if (ACPI_FAILURE (Status))
 306     {
 307         goto Cleanup;
 308     }
 309
 310 Cleanup:
 311     /*
 312      * Since the remainder is not returned indirectly, remove a reference to
 313      * it. Only the quotient is returned indirectly.
 314      */
 315     AcpiUtRemoveReference (ReturnDesc2);
 316
 317     if (ACPI_FAILURE (Status))
 318     {
 319         /* Delete the return object */
 320
 321         AcpiUtRemoveReference (ReturnDesc1);
 322     }
 323
 324     /* Save return object (the remainder) on success */
 325
 326     else
 327     {
 328         WalkState->ResultObj = ReturnDesc1;
 329     }
 330
 331     return_ACPI_STATUS (Status);
 332 }
 333
 334
 335 /*******************************************************************************
 336  *
 337  * FUNCTION:    AcpiExOpcode_2A_1T_1R
 338  *
 339  * PARAMETERS:  WalkState           - Current walk state
 340  *
 341  * RETURN:      Status
 342  *
 343  * DESCRIPTION: Execute opcode with two arguments, one target, and a return
 344  *              value.
 345  *
 346  ******************************************************************************/
 347
 348 ACPI_STATUS
 349 AcpiExOpcode_2A_1T_1R (
 350     ACPI_WALK_STATE         *WalkState)
 351 {
 352     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 353     ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
 354     UINT64                  Index;
 355     ACPI_STATUS             Status = AE_OK;
 356     ACPI_SIZE               Length = 0;
 357
 358
 359     ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
 360         AcpiPsGetOpcodeName (WalkState->Opcode));
 361
 362
 363     /* Execute the opcode */
 364
 365     if (WalkState->OpInfo->Flags & AML_MATH)
 366     {
 367         /* All simple math opcodes (add, etc.) */
 368
 369         ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 370         if (!ReturnDesc)
 371         {
 372             Status = AE_NO_MEMORY;
 373             goto Cleanup;
 374         }
 375
 376         ReturnDesc->Integer.Value = AcpiExDoMathOp (WalkState->Opcode,
 377                                                 Operand[0]->Integer.Value,
 378                                                 Operand[1]->Integer.Value);
 379         goto StoreResultToTarget;
 380     }
 381
 382     switch (WalkState->Opcode)
 383     {
 384     case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */
 385
 386         ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 387         if (!ReturnDesc)
 388         {
 389             Status = AE_NO_MEMORY;
 390             goto Cleanup;
 391         }
 392
 393         /* ReturnDesc will contain the remainder */
 394
 395         Status = AcpiUtDivide (Operand[0]->Integer.Value,
 396                                Operand[1]->Integer.Value,
 397                                NULL,
 398                                &ReturnDesc->Integer.Value);
 399         break;
 400
 401     case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */
 402
 403         Status = AcpiExDoConcatenate (Operand[0], Operand[1],
 404                     &ReturnDesc, WalkState);
 405         break;
 406
 407     case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
 408         /*
 409          * Input object is guaranteed to be a buffer at this point (it may have
 410          * been converted.)  Copy the raw buffer data to a new object of
 411          * type String.
 412          */
 413
 414         /*
 415          * Get the length of the new string. It is the smallest of:
 416          * 1) Length of the input buffer
 417          * 2) Max length as specified in the ToString operator
 418          * 3) Length of input buffer up to a zero byte (null terminator)
 419          *
 420          * NOTE: A length of zero is ok, and will create a zero-length, null
 421          *       terminated string.
 422          */
 423         while ((Length < Operand[0]->Buffer.Length) &&
 424                (Length < Operand[1]->Integer.Value) &&
 425                (Operand[0]->Buffer.Pointer[Length]))
 426         {
 427             Length++;
 428         }
 429
 430         /* Allocate a new string object */
 431
 432         ReturnDesc = AcpiUtCreateStringObject (Length);
 433         if (!ReturnDesc)
 434         {
 435             Status = AE_NO_MEMORY;
 436             goto Cleanup;
 437         }
 438
 439         /*
 440          * Copy the raw buffer data with no transform.
 441          * (NULL terminated already)
 442          */
 443         ACPI_MEMCPY (ReturnDesc->String.Pointer,
 444             Operand[0]->Buffer.Pointer, Length);
 445         break;
 446
 447     case AML_CONCAT_RES_OP:
 448
 449         /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */
 450
 451         Status = AcpiExConcatTemplate (Operand[0], Operand[1],
 452                     &ReturnDesc, WalkState);
 453         break;
 454
 455     case AML_INDEX_OP:              /* Index (Source Index Result) */
 456
 457         /* Create the internal return object */
 458
 459         ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
 460         if (!ReturnDesc)
 461         {
 462             Status = AE_NO_MEMORY;
 463             goto Cleanup;
 464         }
 465
 466         /* Initialize the Index reference object */
 467
 468         Index = Operand[1]->Integer.Value;
 469         ReturnDesc->Reference.Value = (UINT32) Index;
 470         ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;
 471
 472         /*
 473          * At this point, the Source operand is a String, Buffer, or Package.
 474          * Verify that the index is within range.
 475          */
 476         switch ((Operand[0])->Common.Type)
 477         {
 478         case ACPI_TYPE_STRING:
 479
 480             if (Index >= Operand[0]->String.Length)
 481             {
 482                 Length = Operand[0]->String.Length;
 483                 Status = AE_AML_STRING_LIMIT;
 484             }
 485
 486             ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
 487             break;
 488
 489         case ACPI_TYPE_BUFFER:
 490
 491             if (Index >= Operand[0]->Buffer.Length)
 492             {
 493                 Length = Operand[0]->Buffer.Length;
 494                 Status = AE_AML_BUFFER_LIMIT;
 495             }
 496
 497             ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
 498             break;
 499
 500         case ACPI_TYPE_PACKAGE:
 501
 502             if (Index >= Operand[0]->Package.Count)
 503             {
 504                 Length = Operand[0]->Package.Count;
 505                 Status = AE_AML_PACKAGE_LIMIT;
 506             }
 507
 508             ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
 509             ReturnDesc->Reference.Where = &Operand[0]->Package.Elements [Index];
 510             break;
 511
 512         default:
 513
 514             Status = AE_AML_INTERNAL;
 515             goto Cleanup;
 516         }
 517
 518         /* Failure means that the Index was beyond the end of the object */
 519
 520         if (ACPI_FAILURE (Status))
 521         {
 522             ACPI_EXCEPTION ((AE_INFO, Status,
 523                 "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
 524                 ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
 525             goto Cleanup;
 526         }
 527
 528         /*
 529          * Save the target object and add a reference to it for the life
 530          * of the index
 531          */
 532         ReturnDesc->Reference.Object = Operand[0];
 533         AcpiUtAddReference (Operand[0]);
 534
 535         /* Store the reference to the Target */
 536
 537         Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
 538
 539         /* Return the reference */
 540
 541         WalkState->ResultObj = ReturnDesc;
 542         goto Cleanup;
 543
 544     default:
 545
 546         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 547             WalkState->Opcode));
 548         Status = AE_AML_BAD_OPCODE;
 549         break;
 550     }
 551
 552
 553 StoreResultToTarget:
 554
 555     if (ACPI_SUCCESS (Status))
 556     {
 557         /*
 558          * Store the result of the operation (which is now in ReturnDesc) into
 559          * the Target descriptor.
 560          */
 561         Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
 562         if (ACPI_FAILURE (Status))
 563         {
 564             goto Cleanup;
 565         }
 566
 567         if (!WalkState->ResultObj)
 568         {
 569             WalkState->ResultObj = ReturnDesc;
 570         }
 571     }
 572
 573
 574 Cleanup:
 575
 576     /* Delete return object on error */
 577
 578     if (ACPI_FAILURE (Status))
 579     {
 580         AcpiUtRemoveReference (ReturnDesc);
 581         WalkState->ResultObj = NULL;
 582     }
 583
 584     return_ACPI_STATUS (Status);
 585 }
 586
 587
 588 /*******************************************************************************
 589  *
 590  * FUNCTION:    AcpiExOpcode_2A_0T_1R
 591  *
 592  * PARAMETERS:  WalkState           - Current walk state
 593  *
 594  * RETURN:      Status
 595  *
 596  * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
 597  *
 598  ******************************************************************************/
 599
 600 ACPI_STATUS
 601 AcpiExOpcode_2A_0T_1R (
 602     ACPI_WALK_STATE         *WalkState)
 603 {
 604     ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
 605     ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
 606     ACPI_STATUS             Status = AE_OK;
 607     BOOLEAN                 LogicalResult = FALSE;
 608
 609
 610     ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R,
 611         AcpiPsGetOpcodeName (WalkState->Opcode));
 612
 613
 614     /* Create the internal return object */
 615
 616     ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
 617     if (!ReturnDesc)
 618     {
 619         Status = AE_NO_MEMORY;
 620         goto Cleanup;
 621     }
 622
 623     /* Execute the Opcode */
 624
 625     if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC)
 626     {
 627         /* LogicalOp  (Operand0, Operand1) */
 628
 629         Status = AcpiExDoLogicalNumericOp (WalkState->Opcode,
 630                         Operand[0]->Integer.Value, Operand[1]->Integer.Value,
 631                         &LogicalResult);
 632         goto StoreLogicalResult;
 633     }
 634     else if (WalkState->OpInfo->Flags & AML_LOGICAL)
 635     {
 636         /* LogicalOp  (Operand0, Operand1) */
 637
 638         Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0],
 639                     Operand[1], &LogicalResult);
 640         goto StoreLogicalResult;
 641     }
 642
 643     switch (WalkState->Opcode)
 644     {
 645     case AML_ACQUIRE_OP:            /* Acquire (MutexObject, Timeout) */
 646
 647         Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState);
 648         if (Status == AE_TIME)
 649         {
 650             LogicalResult = TRUE;       /* TRUE = Acquire timed out */
 651             Status = AE_OK;
 652         }
 653         break;
 654
 655
 656     case AML_WAIT_OP:               /* Wait (EventObject, Timeout) */
 657
 658         Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]);
 659         if (Status == AE_TIME)
 660         {
 661             LogicalResult = TRUE;       /* TRUE, Wait timed out */
 662             Status = AE_OK;
 663         }
 664         break;
 665
 666     default:
 667
 668         ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
 669             WalkState->Opcode));
 670         Status = AE_AML_BAD_OPCODE;
 671         goto Cleanup;
 672     }
 673
 674
 675 StoreLogicalResult:
 676     /*
 677      * Set return value to according to LogicalResult. logical TRUE (all ones)
 678      * Default is FALSE (zero)
 679      */
 680     if (LogicalResult)
 681     {
 682         ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
 683     }
 684
 685 Cleanup:
 686
 687     /* Delete return object on error */
 688
 689     if (ACPI_FAILURE (Status))
 690     {
 691         AcpiUtRemoveReference (ReturnDesc);
 692     }
 693
 694     /* Save return object on success */
 695
 696     else
 697     {
 698         WalkState->ResultObj = ReturnDesc;
 699     }
 700
 701     return_ACPI_STATUS (Status);
 702 }