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 /******************************************************************************
  *
  * Module Name: exstore - AML Interpreter object store support
  *
  *****************************************************************************/
 
 /******************************************************************************
  *
  * 1. Copyright Notice
  *
  * Some or all of this work - Copyright (c) 1999 - 2024, 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 "acpi.h"
 #include "accommon.h"
 #include "acdispat.h"
 #include "acinterp.h"
 #include "amlcode.h"
 #include "acnamesp.h"
 
 
 #define _COMPONENT          ACPI_EXECUTER
         ACPI_MODULE_NAME    ("exstore")
 
 /* Local prototypes */
 
 static ACPI_STATUS
 AcpiExStoreObjectToIndex (
     ACPI_OPERAND_OBJECT     *ValDesc,
     ACPI_OPERAND_OBJECT     *DestDesc,
     ACPI_WALK_STATE         *WalkState);
 
 static ACPI_STATUS
 AcpiExStoreDirectToNode (
     ACPI_OPERAND_OBJECT     *SourceDesc,
     ACPI_NAMESPACE_NODE     *Node,
     ACPI_WALK_STATE         *WalkState);
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiExStore
  *
  * PARAMETERS:  *SourceDesc         - Value to be stored
  *              *DestDesc           - Where to store it. Must be an NS node
  *                                    or ACPI_OPERAND_OBJECT of type
  *                                    Reference;
  *              WalkState           - Current walk state
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Store the value described by SourceDesc into the location
  *              described by DestDesc. Called by various interpreter
  *              functions to store the result of an operation into
  *              the destination operand -- not just simply the actual "Store"
  *              ASL operator.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiExStore (
     ACPI_OPERAND_OBJECT     *SourceDesc,
     ACPI_OPERAND_OBJECT     *DestDesc,
     ACPI_WALK_STATE         *WalkState)
 {
     ACPI_STATUS             Status = AE_OK;
     ACPI_OPERAND_OBJECT     *RefDesc = DestDesc;
 
 
     ACPI_FUNCTION_TRACE_PTR (ExStore, DestDesc);
 
 
     /* Validate parameters */
 
     if (!SourceDesc || !DestDesc)
     {
         ACPI_ERROR ((AE_INFO, "Null parameter"));
         return_ACPI_STATUS (AE_AML_NO_OPERAND);
     }
 
     /* DestDesc can be either a namespace node or an ACPI object */
 
     if (ACPI_GET_DESCRIPTOR_TYPE (DestDesc) == ACPI_DESC_TYPE_NAMED)
     {
         /*
          * Dest is a namespace node,
          * Storing an object into a Named node.
          */
         Status = AcpiExStoreObjectToNode (SourceDesc,
             (ACPI_NAMESPACE_NODE *) DestDesc, WalkState,
             ACPI_IMPLICIT_CONVERSION);
 
         return_ACPI_STATUS (Status);
     }
 
     /* Destination object must be a Reference or a Constant object */
 
     switch (DestDesc->Common.Type)
     {
     case ACPI_TYPE_LOCAL_REFERENCE:
 
         break;
 
     case ACPI_TYPE_INTEGER:
 
         /* Allow stores to Constants -- a Noop as per ACPI spec */
 
         if (DestDesc->Common.Flags & AOPOBJ_AML_CONSTANT)
         {
             return_ACPI_STATUS (AE_OK);
         }
 
         ACPI_FALLTHROUGH;
 
     default:
 
         /* Destination is not a Reference object */
 
         ACPI_ERROR ((AE_INFO,
             "Target is not a Reference or Constant object - [%s] %p",
             AcpiUtGetObjectTypeName (DestDesc), DestDesc));
 
         return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
     }
 
     /*
      * Examine the Reference class. These cases are handled:
      *
      * 1) Store to Name (Change the object associated with a name)
      * 2) Store to an indexed area of a Buffer or Package
      * 3) Store to a Method Local or Arg
      * 4) Store to the debug object
      */
     switch (RefDesc->Reference.Class)
     {
     case ACPI_REFCLASS_REFOF:
 
         /* Storing an object into a Name "container" */
 
         Status = AcpiExStoreObjectToNode (SourceDesc,
             RefDesc->Reference.Object,
             WalkState, ACPI_IMPLICIT_CONVERSION);
         break;
 
     case ACPI_REFCLASS_INDEX:
 
         /* Storing to an Index (pointer into a packager or buffer) */
 
         Status = AcpiExStoreObjectToIndex (SourceDesc, RefDesc, WalkState);
         break;
 
     case ACPI_REFCLASS_LOCAL:
     case ACPI_REFCLASS_ARG:
 
         /* Store to a method local/arg  */
 
         Status = AcpiDsStoreObjectToLocal (RefDesc->Reference.Class,
             RefDesc->Reference.Value, SourceDesc, WalkState);
         break;
 
     case ACPI_REFCLASS_DEBUG:
         /*
          * Storing to the Debug object causes the value stored to be
          * displayed and otherwise has no effect -- see ACPI Specification
          */
         ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
             "**** Write to Debug Object: Object %p [%s] ****:\n\n",
             SourceDesc, AcpiUtGetObjectTypeName (SourceDesc)));
 
         ACPI_DEBUG_OBJECT (SourceDesc, 0, 0);
         break;
 
     default:
 
         ACPI_ERROR ((AE_INFO, "Unknown Reference Class 0x%2.2X",
             RefDesc->Reference.Class));
         ACPI_DUMP_ENTRY (RefDesc, ACPI_LV_INFO);
 
         Status = AE_AML_INTERNAL;
         break;
     }
 
     return_ACPI_STATUS (Status);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiExStoreObjectToIndex
  *
  * PARAMETERS:  *SourceDesc             - Value to be stored
  *              *DestDesc               - Named object to receive the value
  *              WalkState               - Current walk state
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Store the object to indexed Buffer or Package element
  *
  ******************************************************************************/
 
 static ACPI_STATUS
 AcpiExStoreObjectToIndex (
     ACPI_OPERAND_OBJECT     *SourceDesc,
     ACPI_OPERAND_OBJECT     *IndexDesc,
     ACPI_WALK_STATE         *WalkState)
 {
     ACPI_STATUS             Status = AE_OK;
     ACPI_OPERAND_OBJECT     *ObjDesc;
     ACPI_OPERAND_OBJECT     *NewDesc;
     UINT8                   Value = 0;
     UINT32                  i;
 
 
     ACPI_FUNCTION_TRACE (ExStoreObjectToIndex);
 
 
     /*
      * Destination must be a reference pointer, and
      * must point to either a buffer or a package
      */
     switch (IndexDesc->Reference.TargetType)
     {
     case ACPI_TYPE_PACKAGE:
         /*
          * Storing to a package element. Copy the object and replace
          * any existing object with the new object. No implicit
          * conversion is performed.
          *
          * The object at *(IndexDesc->Reference.Where) is the
          * element within the package that is to be modified.
          * The parent package object is at IndexDesc->Reference.Object
          */
         ObjDesc = *(IndexDesc->Reference.Where);
 
         if (SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE &&
             SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE)
         {
             /* This is a DDBHandle, just add a reference to it */
 
             AcpiUtAddReference (SourceDesc);
             NewDesc = SourceDesc;
         }
         else
         {
             /* Normal object, copy it */
 
             Status = AcpiUtCopyIobjectToIobject (
                 SourceDesc, &NewDesc, WalkState);
             if (ACPI_FAILURE (Status))
             {
                 return_ACPI_STATUS (Status);
             }
         }
 
         if (ObjDesc)
         {
             /* Decrement reference count by the ref count of the parent package */
 
             for (i = 0;
                  i < ((ACPI_OPERAND_OBJECT *)
                         IndexDesc->Reference.Object)->Common.ReferenceCount;
                  i++)
             {
                 AcpiUtRemoveReference (ObjDesc);
             }
         }
 
         *(IndexDesc->Reference.Where) = NewDesc;
 
         /* Increment ref count by the ref count of the parent package-1 */
 
         for (i = 1;
              i < ((ACPI_OPERAND_OBJECT *)
                     IndexDesc->Reference.Object)->Common.ReferenceCount;
              i++)
         {
             AcpiUtAddReference (NewDesc);
         }
 
         break;
 
     case ACPI_TYPE_BUFFER_FIELD:
         /*
          * Store into a Buffer or String (not actually a real BufferField)
          * at a location defined by an Index.
          *
          * The first 8-bit element of the source object is written to the
          * 8-bit Buffer location defined by the Index destination object,
          * according to the ACPI 2.0 specification.
          */
 
         /*
          * Make sure the target is a Buffer or String. An error should
          * not happen here, since the ReferenceObject was constructed
          * by the INDEX_OP code.
          */
         ObjDesc = IndexDesc->Reference.Object;
         if ((ObjDesc->Common.Type != ACPI_TYPE_BUFFER) &&
             (ObjDesc->Common.Type != ACPI_TYPE_STRING))
         {
             return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
         }
 
         /*
          * The assignment of the individual elements will be slightly
          * different for each source type.
          */
         switch (SourceDesc->Common.Type)
         {
         case ACPI_TYPE_INTEGER:
 
             /* Use the least-significant byte of the integer */
 
             Value = (UINT8) (SourceDesc->Integer.Value);
             break;
 
         case ACPI_TYPE_BUFFER:
         case ACPI_TYPE_STRING:
 
             /* Note: Takes advantage of common string/buffer fields */
 
             Value = SourceDesc->Buffer.Pointer[0];
             break;
 
         default:
 
             /* All other types are invalid */
 
             ACPI_ERROR ((AE_INFO,
                 "Source must be type [Integer/Buffer/String], found [%s]",
                 AcpiUtGetObjectTypeName (SourceDesc)));
             return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
         }
 
         /* Store the source value into the target buffer byte */
 
         ObjDesc->Buffer.Pointer[IndexDesc->Reference.Value] = Value;
         break;
 
     default:
         ACPI_ERROR ((AE_INFO,
             "Target is not of type [Package/BufferField]"));
         Status = AE_AML_TARGET_TYPE;
         break;
     }
 
     return_ACPI_STATUS (Status);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiExStoreObjectToNode
  *
  * PARAMETERS:  SourceDesc              - Value to be stored
  *              Node                    - Named object to receive the value
  *              WalkState               - Current walk state
  *              ImplicitConversion      - Perform implicit conversion (yes/no)
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Store the object to the named object.
  *
  * The assignment of an object to a named object is handled here.
  * The value passed in will replace the current value (if any)
  * with the input value.
  *
  * When storing into an object the data is converted to the
  * target object type then stored in the object. This means
  * that the target object type (for an initialized target) will
  * not be changed by a store operation. A CopyObject can change
  * the target type, however.
  *
  * The ImplicitConversion flag is set to NO/FALSE only when
  * storing to an ArgX -- as per the rules of the ACPI spec.
  *
  * Assumes parameters are already validated.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiExStoreObjectToNode (
     ACPI_OPERAND_OBJECT     *SourceDesc,
     ACPI_NAMESPACE_NODE     *Node,
     ACPI_WALK_STATE         *WalkState,
     UINT8                   ImplicitConversion)
 {
     ACPI_STATUS             Status = AE_OK;
     ACPI_OPERAND_OBJECT     *TargetDesc;
     ACPI_OPERAND_OBJECT     *NewDesc;
     ACPI_OBJECT_TYPE        TargetType;
 
 
     ACPI_FUNCTION_TRACE_PTR (ExStoreObjectToNode, SourceDesc);
 
 
     /* Get current type of the node, and object attached to Node */
 
     TargetType = AcpiNsGetType (Node);
     TargetDesc = AcpiNsGetAttachedObject (Node);
 
     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Storing %p [%s] to node %p [%s]\n",
         SourceDesc, AcpiUtGetObjectTypeName (SourceDesc),
         Node, AcpiUtGetTypeName (TargetType)));
 
     /* Only limited target types possible for everything except CopyObject */
 
     if (WalkState->Opcode != AML_COPY_OBJECT_OP)
     {
         /*
          * Only CopyObject allows all object types to be overwritten. For
          * TargetRef(s), there are restrictions on the object types that
          * are allowed.
          *
          * Allowable operations/typing for Store:
          *
          * 1) Simple Store
          *      Integer     --> Integer (Named/Local/Arg)
          *      String      --> String  (Named/Local/Arg)
          *      Buffer      --> Buffer  (Named/Local/Arg)
          *      Package     --> Package (Named/Local/Arg)
          *
          * 2) Store with implicit conversion
          *      Integer     --> String or Buffer  (Named)
          *      String      --> Integer or Buffer (Named)
          *      Buffer      --> Integer or String (Named)
          */
         switch (TargetType)
         {
         case ACPI_TYPE_PACKAGE:
             /*
              * Here, can only store a package to an existing package.
              * Storing a package to a Local/Arg is OK, and handled
              * elsewhere.
              */
             if (WalkState->Opcode == AML_STORE_OP)
             {
                 if (SourceDesc->Common.Type != ACPI_TYPE_PACKAGE)
                 {
                     ACPI_ERROR ((AE_INFO,
                         "Cannot assign type [%s] to [Package] "
                         "(source must be type Pkg)",
                         AcpiUtGetObjectTypeName (SourceDesc)));
 
                     return_ACPI_STATUS (AE_AML_TARGET_TYPE);
                 }
                 break;
             }
 
             ACPI_FALLTHROUGH;
 
         case ACPI_TYPE_DEVICE:
         case ACPI_TYPE_EVENT:
         case ACPI_TYPE_MUTEX:
         case ACPI_TYPE_REGION:
         case ACPI_TYPE_POWER:
         case ACPI_TYPE_PROCESSOR:
         case ACPI_TYPE_THERMAL:
 
             ACPI_ERROR ((AE_INFO,
                 "Target must be [Buffer/Integer/String/Reference]"
                 ", found [%s] (%4.4s)",
                 AcpiUtGetTypeName (Node->Type), Node->Name.Ascii));
 
             return_ACPI_STATUS (AE_AML_TARGET_TYPE);
 
         default:
             break;
         }
     }
 
     /*
      * Resolve the source object to an actual value
      * (If it is a reference object)
      */
     Status = AcpiExResolveObject (&SourceDesc, TargetType, WalkState);
     if (ACPI_FAILURE (Status))
     {
         return_ACPI_STATUS (Status);
     }
 
     /* Do the actual store operation */
 
     switch (TargetType)
     {
         /*
          * The simple data types all support implicit source operand
          * conversion before the store.
          */
     case ACPI_TYPE_INTEGER:
     case ACPI_TYPE_STRING:
     case ACPI_TYPE_BUFFER:
 
         if ((WalkState->Opcode == AML_COPY_OBJECT_OP) ||
             !ImplicitConversion)
         {
             /*
              * However, CopyObject and Stores to ArgX do not perform
              * an implicit conversion, as per the ACPI specification.
              * A direct store is performed instead.
              */
             Status = AcpiExStoreDirectToNode (SourceDesc, Node, WalkState);
             break;
         }
 
         /* Store with implicit source operand conversion support */
 
         Status = AcpiExStoreObjectToObject (SourceDesc, TargetDesc,
             &NewDesc, WalkState);
         if (ACPI_FAILURE (Status))
         {
             return_ACPI_STATUS (Status);
         }
 
         if (NewDesc != TargetDesc)
         {
             /*
              * Store the new NewDesc as the new value of the Name, and set
              * the Name's type to that of the value being stored in it.
              * SourceDesc reference count is incremented by AttachObject.
              *
              * Note: This may change the type of the node if an explicit
              * store has been performed such that the node/object type
              * has been changed.
              */
             Status = AcpiNsAttachObject (
                 Node, NewDesc, NewDesc->Common.Type);
 
             ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
                 "Store type [%s] into [%s] via Convert/Attach\n",
                 AcpiUtGetObjectTypeName (SourceDesc),
                 AcpiUtGetObjectTypeName (NewDesc)));
         }
         break;
 
     case ACPI_TYPE_BUFFER_FIELD:
     case ACPI_TYPE_LOCAL_REGION_FIELD:
     case ACPI_TYPE_LOCAL_BANK_FIELD:
     case ACPI_TYPE_LOCAL_INDEX_FIELD:
         /*
          * For all fields, always write the source data to the target
          * field. Any required implicit source operand conversion is
          * performed in the function below as necessary. Note, field
          * objects must retain their original type permanently.
          */
         Status = AcpiExWriteDataToField (SourceDesc, TargetDesc,
             &WalkState->ResultObj);
         break;
 
     default:
         /*
          * CopyObject operator: No conversions for all other types.
          * Instead, directly store a copy of the source object.
          *
          * This is the ACPI spec-defined behavior for the CopyObject
          * operator. (Note, for this default case, all normal
          * Store/Target operations exited above with an error).
          */
         Status = AcpiExStoreDirectToNode (SourceDesc, Node, WalkState);
         break;
     }
 
     return_ACPI_STATUS (Status);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiExStoreDirectToNode
  *
  * PARAMETERS:  SourceDesc              - Value to be stored
  *              Node                    - Named object to receive the value
  *              WalkState               - Current walk state
  *
  * RETURN:      Status
  *
  * DESCRIPTION: "Store" an object directly to a node. This involves a copy
  *              and an attach.
  *
  ******************************************************************************/
 
 static ACPI_STATUS
 AcpiExStoreDirectToNode (
     ACPI_OPERAND_OBJECT     *SourceDesc,
     ACPI_NAMESPACE_NODE     *Node,
     ACPI_WALK_STATE         *WalkState)
 {
     ACPI_STATUS             Status;
     ACPI_OPERAND_OBJECT     *NewDesc;
 
 
     ACPI_FUNCTION_TRACE (ExStoreDirectToNode);
 
 
     ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
         "Storing [%s] (%p) directly into node [%s] (%p)"
         " with no implicit conversion\n",
         AcpiUtGetObjectTypeName (SourceDesc), SourceDesc,
         AcpiUtGetTypeName (Node->Type), Node));
 
     /* Copy the source object to a new object */
 
     Status = AcpiUtCopyIobjectToIobject (SourceDesc, &NewDesc, WalkState);
     if (ACPI_FAILURE (Status))
     {
         return_ACPI_STATUS (Status);
     }
 
     /* Attach the new object to the node */
 
     Status = AcpiNsAttachObject (Node, NewDesc, NewDesc->Common.Type);
     AcpiUtRemoveReference (NewDesc);
     return_ACPI_STATUS (Status);
 }

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