FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/executer/exoparg2.c

     /******************************************************************************
      *
      * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 1. Copyright Notice
     *
     * Some or all of this work - Copyright (c) 1999 - 2022, Intel Corp.
     * All rights reserved.
     *
     * 2. License
     *
     * 2.1. This is your license from Intel Corp. under its intellectual property
     * rights. You may have additional license terms from the party that provided
     * you this software, covering your right to use that party's intellectual
     * property rights.
     *
     * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
     * copy of the source code appearing in this file ("Covered Code") an
     * irrevocable, perpetual, worldwide license under Intel's copyrights in the
     * base code distributed originally by Intel ("Original Intel Code") to copy,
     * make derivatives, distribute, use and display any portion of the Covered
     * Code in any form, with the right to sublicense such rights; and
     *
     * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
     * license (with the right to sublicense), under only those claims of Intel
     * patents that are infringed by the Original Intel Code, to make, use, sell,
     * offer to sell, and import the Covered Code and derivative works thereof
     * solely to the minimum extent necessary to exercise the above copyright
     * license, and in no event shall the patent license extend to any additions
     * to or modifications of the Original Intel Code. No other license or right
     * is granted directly or by implication, estoppel or otherwise;
     *
     * The above copyright and patent license is granted only if the following
     * conditions are met:
     *
     * 3. Conditions
     *
     * 3.1. Redistribution of Source with Rights to Further Distribute Source.
     * Redistribution of source code of any substantial portion of the Covered
     * Code or modification with rights to further distribute source must include
     * the above Copyright Notice, the above License, this list of Conditions,
     * and the following Disclaimer and Export Compliance provision. In addition,
     * Licensee must cause all Covered Code to which Licensee contributes to
     * contain a file documenting the changes Licensee made to create that Covered
     * Code and the date of any change. Licensee must include in that file the
     * documentation of any changes made by any predecessor Licensee. Licensee
     * must include a prominent statement that the modification is derived,
     * directly or indirectly, from Original Intel Code.
     *
     * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
     * Redistribution of source code of any substantial portion of the Covered
     * Code or modification without rights to further distribute source must
     * include the following Disclaimer and Export Compliance provision in the
     * documentation and/or other materials provided with distribution. In
     * addition, Licensee may not authorize further sublicense of source of any
     * portion of the Covered Code, and must include terms to the effect that the
     * license from Licensee to its licensee is limited to the intellectual
     * property embodied in the software Licensee provides to its licensee, and
     * not to intellectual property embodied in modifications its licensee may
     * make.
     *
     * 3.3. Redistribution of Executable. Redistribution in executable form of any
     * substantial portion of the Covered Code or modification must reproduce the
     * above Copyright Notice, and the following Disclaimer and Export Compliance
     * provision in the documentation and/or other materials provided with the
     * distribution.
     *
     * 3.4. Intel retains all right, title, and interest in and to the Original
     * Intel Code.
     *
     * 3.5. Neither the name Intel nor any other trademark owned or controlled by
     * Intel shall be used in advertising or otherwise to promote the sale, use or
     * other dealings in products derived from or relating to the Covered Code
     * without prior written authorization from Intel.
     *
     * 4. Disclaimer and Export Compliance
     *
     * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
     * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
     * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
     * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
     * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
     * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
     * PARTICULAR PURPOSE.
     *
     * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
     * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
     * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
     * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
     * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
     * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
     * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
     * LIMITED REMEDY.
     *
     * 4.3. Licensee shall not export, either directly or indirectly, any of this
    * software or system incorporating such software without first obtaining any
    * required license or other approval from the U. S. Department of Commerce or
    * any other agency or department of the United States Government. In the
    * event Licensee exports any such software from the United States or
    * re-exports any such software from a foreign destination, Licensee shall
    * ensure that the distribution and export/re-export of the software is in
    * compliance with all laws, regulations, orders, or other restrictions of the
    * U.S. Export Administration Regulations. Licensee agrees that neither it nor
    * any of its subsidiaries will export/re-export any technical data, process,
    * software, or service, directly or indirectly, to any country for which the
    * United States government or any agency thereof requires an export license,
    * other governmental approval, or letter of assurance, without first obtaining
    * such license, approval or letter.
    *
    *****************************************************************************
    *
    * Alternatively, you may choose to be licensed under the terms of the
    * following license:
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    * 1. Redistributions of source code must retain the above copyright
    *    notice, this list of conditions, and the following disclaimer,
    *    without modification.
    * 2. Redistributions in binary form must reproduce at minimum a disclaimer
    *    substantially similar to the "NO WARRANTY" disclaimer below
    *    ("Disclaimer") and any redistribution must be conditioned upon
    *    including a substantially similar Disclaimer requirement for further
    *    binary redistribution.
    * 3. Neither the names of the above-listed copyright holders nor the names
    *    of any contributors may be used to endorse or promote products derived
    *    from this software without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    * Alternatively, you may choose to be licensed under the terms of the
    * GNU General Public License ("GPL") version 2 as published by the Free
    * Software Foundation.
    *
    *****************************************************************************/
   
   #include <contrib/dev/acpica/include/acpi.h>
   #include <contrib/dev/acpica/include/accommon.h>
   #include <contrib/dev/acpica/include/acparser.h>
   #include <contrib/dev/acpica/include/acinterp.h>
   #include <contrib/dev/acpica/include/acevents.h>
   #include <contrib/dev/acpica/include/amlcode.h>
   
   
   #define _COMPONENT          ACPI_EXECUTER
           ACPI_MODULE_NAME    ("exoparg2")
   
   
   /*!
    * Naming convention for AML interpreter execution routines.
    *
    * The routines that begin execution of AML opcodes are named with a common
    * convention based upon the number of arguments, the number of target operands,
    * and whether or not a value is returned:
    *
    *      AcpiExOpcode_xA_yT_zR
    *
    * Where:
    *
    * xA - ARGUMENTS:    The number of arguments (input operands) that are
    *                    required for this opcode type (1 through 6 args).
    * yT - TARGETS:      The number of targets (output operands) that are required
    *                    for this opcode type (0, 1, or 2 targets).
    * zR - RETURN VALUE: Indicates whether this opcode type returns a value
    *                    as the function return (0 or 1).
    *
    * The AcpiExOpcode* functions are called via the Dispatcher component with
    * fully resolved operands.
   !*/
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExOpcode_2A_0T_0R
    *
    * PARAMETERS:  WalkState           - Current walk state
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Execute opcode with two arguments, no target, and no return
    *              value.
    *
    * ALLOCATION:  Deletes both operands
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExOpcode_2A_0T_0R (
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
       ACPI_NAMESPACE_NODE     *Node;
       UINT32                  Value;
       ACPI_STATUS             Status = AE_OK;
   
   
       ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
               AcpiPsGetOpcodeName (WalkState->Opcode));
   
   
       /* Examine the opcode */
   
       switch (WalkState->Opcode)
       {
       case AML_NOTIFY_OP:         /* Notify (NotifyObject, NotifyValue) */
   
           /* The first operand is a namespace node */
   
           Node = (ACPI_NAMESPACE_NODE *) Operand[0];
   
           /* Second value is the notify value */
   
           Value = (UINT32) Operand[1]->Integer.Value;
   
           /* Are notifies allowed on this object? */
   
           if (!AcpiEvIsNotifyObject (Node))
           {
               ACPI_ERROR ((AE_INFO,
                   "Unexpected notify object type [%s]",
                   AcpiUtGetTypeName (Node->Type)));
   
               Status = AE_AML_OPERAND_TYPE;
               break;
           }
   
           /*
            * Dispatch the notify to the appropriate handler
            * NOTE: the request is queued for execution after this method
            * completes. The notify handlers are NOT invoked synchronously
            * from this thread -- because handlers may in turn run other
            * control methods.
            */
           Status = AcpiEvQueueNotifyRequest (Node, Value);
           break;
   
       default:
   
           ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
               WalkState->Opcode));
           Status = AE_AML_BAD_OPCODE;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExOpcode_2A_2T_1R
    *
    * PARAMETERS:  WalkState           - Current walk state
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets
    *              and one implicit return value.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExOpcode_2A_2T_1R (
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
       ACPI_OPERAND_OBJECT     *ReturnDesc1 = NULL;
       ACPI_OPERAND_OBJECT     *ReturnDesc2 = NULL;
       ACPI_STATUS             Status;
   
   
       ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R,
           AcpiPsGetOpcodeName (WalkState->Opcode));
   
   
       /* Execute the opcode */
   
       switch (WalkState->Opcode)
       {
       case AML_DIVIDE_OP:
   
           /* Divide (Dividend, Divisor, RemainderResult QuotientResult) */
   
           ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
           if (!ReturnDesc1)
           {
               Status = AE_NO_MEMORY;
               goto Cleanup;
           }
   
           ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
           if (!ReturnDesc2)
           {
               Status = AE_NO_MEMORY;
               goto Cleanup;
           }
   
           /* Quotient to ReturnDesc1, remainder to ReturnDesc2 */
   
           Status = AcpiUtDivide (
               Operand[0]->Integer.Value,
               Operand[1]->Integer.Value,
               &ReturnDesc1->Integer.Value,
               &ReturnDesc2->Integer.Value);
           if (ACPI_FAILURE (Status))
           {
               goto Cleanup;
           }
           break;
   
       default:
   
           ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
               WalkState->Opcode));
   
           Status = AE_AML_BAD_OPCODE;
           goto Cleanup;
       }
   
       /* Store the results to the target reference operands */
   
       Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
       if (ACPI_FAILURE (Status))
       {
           goto Cleanup;
       }
   
       Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
       if (ACPI_FAILURE (Status))
       {
           goto Cleanup;
       }
   
   Cleanup:
       /*
        * Since the remainder is not returned indirectly, remove a reference to
        * it. Only the quotient is returned indirectly.
        */
       AcpiUtRemoveReference (ReturnDesc2);
   
       if (ACPI_FAILURE (Status))
       {
           /* Delete the return object */
   
           AcpiUtRemoveReference (ReturnDesc1);
       }
   
       /* Save return object (the remainder) on success */
   
       else
       {
           WalkState->ResultObj = ReturnDesc1;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExOpcode_2A_1T_1R
    *
    * PARAMETERS:  WalkState           - Current walk state
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Execute opcode with two arguments, one target, and a return
    *              value.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExOpcode_2A_1T_1R (
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
       ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
       UINT64                  Index;
       ACPI_STATUS             Status = AE_OK;
       ACPI_SIZE               Length = 0;
   
   
       ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
           AcpiPsGetOpcodeName (WalkState->Opcode));
   
   
       /* Execute the opcode */
   
       if (WalkState->OpInfo->Flags & AML_MATH)
       {
           /* All simple math opcodes (add, etc.) */
   
           ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
           if (!ReturnDesc)
           {
               Status = AE_NO_MEMORY;
               goto Cleanup;
           }
   
           ReturnDesc->Integer.Value = AcpiExDoMathOp (
               WalkState->Opcode,
               Operand[0]->Integer.Value,
               Operand[1]->Integer.Value);
           goto StoreResultToTarget;
       }
   
       switch (WalkState->Opcode)
       {
       case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */
   
           ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
           if (!ReturnDesc)
           {
               Status = AE_NO_MEMORY;
               goto Cleanup;
           }
   
           /* ReturnDesc will contain the remainder */
   
           Status = AcpiUtDivide (
               Operand[0]->Integer.Value,
               Operand[1]->Integer.Value,
               NULL,
               &ReturnDesc->Integer.Value);
           break;
   
       case AML_CONCATENATE_OP: /* Concatenate (Data1, Data2, Result) */
   
           Status = AcpiExDoConcatenate (
               Operand[0], Operand[1], &ReturnDesc, WalkState);
           break;
   
       case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
           /*
            * Input object is guaranteed to be a buffer at this point (it may have
            * been converted.)  Copy the raw buffer data to a new object of
            * type String.
            */
   
           /*
            * Get the length of the new string. It is the smallest of:
            * 1) Length of the input buffer
            * 2) Max length as specified in the ToString operator
            * 3) Length of input buffer up to a zero byte (null terminator)
            *
            * NOTE: A length of zero is ok, and will create a zero-length, null
            *       terminated string.
            */
           while ((Length < Operand[0]->Buffer.Length) &&  /* Length of input buffer */
                  (Length < Operand[1]->Integer.Value) &&  /* Length operand */
                  (Operand[0]->Buffer.Pointer[Length]))    /* Null terminator */
           {
               Length++;
           }
   
           /* Allocate a new string object */
   
           ReturnDesc = AcpiUtCreateStringObject (Length);
           if (!ReturnDesc)
           {
               Status = AE_NO_MEMORY;
               goto Cleanup;
           }
   
           /*
            * Copy the raw buffer data with no transform.
            * (NULL terminated already)
            */
           memcpy (ReturnDesc->String.Pointer,
               Operand[0]->Buffer.Pointer, Length);
           break;
   
       case AML_CONCATENATE_TEMPLATE_OP:
   
           /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */
   
           Status = AcpiExConcatTemplate (
               Operand[0], Operand[1], &ReturnDesc, WalkState);
           break;
   
       case AML_INDEX_OP:              /* Index (Source Index Result) */
   
           /* Create the internal return object */
   
           ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
           if (!ReturnDesc)
           {
               Status = AE_NO_MEMORY;
               goto Cleanup;
           }
   
           /* Initialize the Index reference object */
   
           Index = Operand[1]->Integer.Value;
           ReturnDesc->Reference.Value = (UINT32) Index;
           ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;
   
           /*
            * At this point, the Source operand is a String, Buffer, or Package.
            * Verify that the index is within range.
            */
           switch ((Operand[0])->Common.Type)
           {
           case ACPI_TYPE_STRING:
   
               if (Index >= Operand[0]->String.Length)
               {
                   Length = Operand[0]->String.Length;
                   Status = AE_AML_STRING_LIMIT;
               }
   
               ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
               ReturnDesc->Reference.IndexPointer =
                   &(Operand[0]->Buffer.Pointer [Index]);
               break;
   
           case ACPI_TYPE_BUFFER:
   
               if (Index >= Operand[0]->Buffer.Length)
               {
                   Length = Operand[0]->Buffer.Length;
                   Status = AE_AML_BUFFER_LIMIT;
               }
   
               ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
               ReturnDesc->Reference.IndexPointer =
                   &(Operand[0]->Buffer.Pointer [Index]);
               break;
   
           case ACPI_TYPE_PACKAGE:
   
               if (Index >= Operand[0]->Package.Count)
               {
                   Length = Operand[0]->Package.Count;
                   Status = AE_AML_PACKAGE_LIMIT;
               }
   
               ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
               ReturnDesc->Reference.Where =
                   &Operand[0]->Package.Elements [Index];
               break;
   
           default:
   
               ACPI_ERROR ((AE_INFO,
                   "Invalid object type: %X", (Operand[0])->Common.Type));
               Status = AE_AML_INTERNAL;
               goto Cleanup;
           }
   
           /* Failure means that the Index was beyond the end of the object */
   
           if (ACPI_FAILURE (Status))
           {
               ACPI_BIOS_EXCEPTION ((AE_INFO, Status,
                   "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
                   ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
               goto Cleanup;
           }
   
           /*
            * Save the target object and add a reference to it for the life
            * of the index
            */
           ReturnDesc->Reference.Object = Operand[0];
           AcpiUtAddReference (Operand[0]);
   
           /* Store the reference to the Target */
   
           Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
   
           /* Return the reference */
   
           WalkState->ResultObj = ReturnDesc;
           goto Cleanup;
   
       default:
   
           ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
               WalkState->Opcode));
           Status = AE_AML_BAD_OPCODE;
           break;
       }
   
   
   StoreResultToTarget:
   
       if (ACPI_SUCCESS (Status))
       {
           /*
            * Store the result of the operation (which is now in ReturnDesc) into
            * the Target descriptor.
            */
           Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
           if (ACPI_FAILURE (Status))
           {
               goto Cleanup;
           }
   
           if (!WalkState->ResultObj)
           {
               WalkState->ResultObj = ReturnDesc;
           }
       }
   
   
   Cleanup:
   
       /* Delete return object on error */
   
       if (ACPI_FAILURE (Status))
       {
           AcpiUtRemoveReference (ReturnDesc);
           WalkState->ResultObj = NULL;
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiExOpcode_2A_0T_1R
    *
    * PARAMETERS:  WalkState           - Current walk state
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiExOpcode_2A_0T_1R (
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
       ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
       ACPI_STATUS             Status = AE_OK;
       BOOLEAN                 LogicalResult = FALSE;
   
   
       ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R,
           AcpiPsGetOpcodeName (WalkState->Opcode));
   
   
       /* Create the internal return object */
   
       ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
       if (!ReturnDesc)
       {
           Status = AE_NO_MEMORY;
           goto Cleanup;
       }
   
       /* Execute the Opcode */
   
       if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC)
       {
           /* LogicalOp  (Operand0, Operand1) */
   
           Status = AcpiExDoLogicalNumericOp (WalkState->Opcode,
               Operand[0]->Integer.Value, Operand[1]->Integer.Value,
               &LogicalResult);
           goto StoreLogicalResult;
       }
       else if (WalkState->OpInfo->Flags & AML_LOGICAL)
       {
           /* LogicalOp  (Operand0, Operand1) */
   
           Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0],
               Operand[1], &LogicalResult);
           goto StoreLogicalResult;
       }
   
       switch (WalkState->Opcode)
       {
       case AML_ACQUIRE_OP:            /* Acquire (MutexObject, Timeout) */
   
           Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState);
           if (Status == AE_TIME)
           {
               LogicalResult = TRUE;       /* TRUE = Acquire timed out */
               Status = AE_OK;
           }
           break;
   
   
       case AML_WAIT_OP:               /* Wait (EventObject, Timeout) */
   
           Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]);
           if (Status == AE_TIME)
           {
               LogicalResult = TRUE;       /* TRUE, Wait timed out */
               Status = AE_OK;
           }
           break;
   
       default:
   
           ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
               WalkState->Opcode));
   
           Status = AE_AML_BAD_OPCODE;
           goto Cleanup;
       }
   
   
   StoreLogicalResult:
       /*
        * Set return value to according to LogicalResult. logical TRUE (all ones)
        * Default is FALSE (zero)
        */
       if (LogicalResult)
       {
           ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
       }
   
   Cleanup:
   
       /* Delete return object on error */
   
       if (ACPI_FAILURE (Status))
       {
           AcpiUtRemoveReference (ReturnDesc);
       }
   
       /* Save return object on success */
   
       else
       {
           WalkState->ResultObj = ReturnDesc;
       }
   
       return_ACPI_STATUS (Status);
   }

Cache object: 32af5711f80aea43dad70d479ca745ea