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 /******************************************************************************
  *
  * Module Name: dswload - Dispatcher first pass namespace load callbacks
  *
  *****************************************************************************/
 
 /******************************************************************************
  *
  * 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 "acparser.h"
 #include "amlcode.h"
 #include "acdispat.h"
 #include "acinterp.h"
 #include "acnamesp.h"
 #ifdef ACPI_ASL_COMPILER
 #include "acdisasm.h"
 #endif
 
 #define _COMPONENT          ACPI_DISPATCHER
         ACPI_MODULE_NAME    ("dswload")
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsInitCallbacks
  *
  * PARAMETERS:  WalkState       - Current state of the parse tree walk
  *              PassNumber      - 1, 2, or 3
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Init walk state callbacks
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiDsInitCallbacks (
     ACPI_WALK_STATE         *WalkState,
     UINT32                  PassNumber)
 {
 
     switch (PassNumber)
     {
     case 0:
 
         /* Parse only - caller will setup callbacks */
 
         WalkState->ParseFlags         = ACPI_PARSE_LOAD_PASS1 |
                                         ACPI_PARSE_DELETE_TREE |
                                         ACPI_PARSE_DISASSEMBLE;
         WalkState->DescendingCallback = NULL;
         WalkState->AscendingCallback  = NULL;
         break;
 
     case 1:
 
         /* Load pass 1 */
 
         WalkState->ParseFlags         = ACPI_PARSE_LOAD_PASS1 |
                                         ACPI_PARSE_DELETE_TREE;
         WalkState->DescendingCallback = AcpiDsLoad1BeginOp;
         WalkState->AscendingCallback  = AcpiDsLoad1EndOp;
         break;
 
     case 2:
 
         /* Load pass 2 */
 
         WalkState->ParseFlags         = ACPI_PARSE_LOAD_PASS1 |
                                         ACPI_PARSE_DELETE_TREE;
         WalkState->DescendingCallback = AcpiDsLoad2BeginOp;
         WalkState->AscendingCallback  = AcpiDsLoad2EndOp;
         break;
 
     case 3:
 
         /* Execution pass */
 
         WalkState->ParseFlags        |= ACPI_PARSE_EXECUTE  |
                                         ACPI_PARSE_DELETE_TREE;
         WalkState->DescendingCallback = AcpiDsExecBeginOp;
         WalkState->AscendingCallback  = AcpiDsExecEndOp;
         break;
 
     default:
 
         return (AE_BAD_PARAMETER);
     }
 
     return (AE_OK);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsLoad1BeginOp
  *
  * PARAMETERS:  WalkState       - Current state of the parse tree walk
  *              OutOp           - Where to return op if a new one is created
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Descending callback used during the loading of ACPI tables.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiDsLoad1BeginOp (
     ACPI_WALK_STATE         *WalkState,
     ACPI_PARSE_OBJECT       **OutOp)
 {
     ACPI_PARSE_OBJECT       *Op;
     ACPI_NAMESPACE_NODE     *Node;
     ACPI_STATUS             Status;
     ACPI_OBJECT_TYPE        ObjectType;
     char                    *Path;
     UINT32                  Flags;
 
 
     ACPI_FUNCTION_TRACE_PTR (DsLoad1BeginOp, WalkState->Op);
 
 
     Op = WalkState->Op;
     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
 
     /* We are only interested in opcodes that have an associated name */
 
     if (Op)
     {
         if (!(WalkState->OpInfo->Flags & AML_NAMED))
         {
             *OutOp = Op;
             return_ACPI_STATUS (AE_OK);
         }
 
         /* Check if this object has already been installed in the namespace */
 
         if (Op->Common.Node)
         {
             *OutOp = Op;
             return_ACPI_STATUS (AE_OK);
         }
     }
 
     Path = AcpiPsGetNextNamestring (&WalkState->ParserState);
 
     /* Map the raw opcode into an internal object type */
 
     ObjectType = WalkState->OpInfo->ObjectType;
 
     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
         "State=%p Op=%p [%s]\n", WalkState, Op,
         AcpiUtGetTypeName (ObjectType)));
 
     switch (WalkState->Opcode)
     {
     case AML_SCOPE_OP:
         /*
          * The target name of the Scope() operator must exist at this point so
          * that we can actually open the scope to enter new names underneath it.
          * Allow search-to-root for single namesegs.
          */
         Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
             ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &(Node));
 #ifdef ACPI_ASL_COMPILER
         if (Status == AE_NOT_FOUND)
         {
             /*
              * Table disassembly:
              * Target of Scope() not found. Generate an External for it, and
              * insert the name into the namespace.
              */
             AcpiDmAddOpToExternalList (Op, Path, ACPI_TYPE_DEVICE, 0, 0);
             Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
                ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
                WalkState, &Node);
         }
 #endif
         if (ACPI_FAILURE (Status))
         {
             ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Path, Status);
             return_ACPI_STATUS (Status);
         }
 
         /*
          * Check to make sure that the target is
          * one of the opcodes that actually opens a scope
          */
         switch (Node->Type)
         {
         case ACPI_TYPE_ANY:
         case ACPI_TYPE_LOCAL_SCOPE:         /* Scope  */
         case ACPI_TYPE_DEVICE:
         case ACPI_TYPE_POWER:
         case ACPI_TYPE_PROCESSOR:
         case ACPI_TYPE_THERMAL:
 
             /* These are acceptable types */
             break;
 
         case ACPI_TYPE_INTEGER:
         case ACPI_TYPE_STRING:
         case ACPI_TYPE_BUFFER:
             /*
              * These types we will allow, but we will change the type.
              * This enables some existing code of the form:
              *
              *  Name (DEB, 0)
              *  Scope (DEB) { ... }
              *
              * Note: silently change the type here. On the second pass,
              * we will report a warning
              */
             ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
                 "Type override - [%4.4s] had invalid type (%s) "
                 "for Scope operator, changed to type ANY\n",
                 AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
 
             Node->Type = ACPI_TYPE_ANY;
             WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
             break;
 
         case ACPI_TYPE_METHOD:
             /*
              * Allow scope change to root during execution of module-level
              * code. Root is typed METHOD during this time.
              */
             if ((Node == AcpiGbl_RootNode) &&
                 (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
             {
                 break;
             }
 
             ACPI_FALLTHROUGH;
 
         default:
 
             /* All other types are an error */
 
             ACPI_ERROR ((AE_INFO,
                 "Invalid type (%s) for target of "
                 "Scope operator [%4.4s] (Cannot override)",
                 AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
 
             return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
         }
         break;
 
     default:
         /*
          * For all other named opcodes, we will enter the name into
          * the namespace.
          *
          * Setup the search flags.
          * Since we are entering a name into the namespace, we do not want to
          * enable the search-to-root upsearch.
          *
          * There are only two conditions where it is acceptable that the name
          * already exists:
          *    1) the Scope() operator can reopen a scoping object that was
          *       previously defined (Scope, Method, Device, etc.)
          *    2) Whenever we are parsing a deferred opcode (OpRegion, Buffer,
          *       BufferField, or Package), the name of the object is already
          *       in the namespace.
          */
         if (WalkState->DeferredNode)
         {
             /* This name is already in the namespace, get the node */
 
             Node = WalkState->DeferredNode;
             Status = AE_OK;
             break;
         }
 
         /*
          * If we are executing a method, do not create any namespace objects
          * during the load phase, only during execution.
          */
         if (WalkState->MethodNode)
         {
             Node = NULL;
             Status = AE_OK;
             break;
         }
 
         Flags = ACPI_NS_NO_UPSEARCH;
         if ((WalkState->Opcode != AML_SCOPE_OP) &&
             (!(WalkState->ParseFlags & ACPI_PARSE_DEFERRED_OP)))
         {
             if (WalkState->NamespaceOverride)
             {
                 Flags |= ACPI_NS_OVERRIDE_IF_FOUND;
                 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Override allowed\n",
                     AcpiUtGetTypeName (ObjectType)));
             }
             else
             {
                 Flags |= ACPI_NS_ERROR_IF_FOUND;
                 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[%s] Cannot already exist\n",
                     AcpiUtGetTypeName (ObjectType)));
             }
         }
         else
         {
             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
                 "[%s] Both Find or Create allowed\n",
                 AcpiUtGetTypeName (ObjectType)));
         }
 
         /*
          * Enter the named type into the internal namespace. We enter the name
          * as we go downward in the parse tree. Any necessary subobjects that
          * involve arguments to the opcode must be created as we go back up the
          * parse tree later.
          */
         Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
             ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node);
         if (ACPI_FAILURE (Status))
         {
             if (Status == AE_ALREADY_EXISTS)
             {
                 /* The name already exists in this scope */
 
                 if (Node->Flags & ANOBJ_IS_EXTERNAL)
                 {
                     /*
                      * Allow one create on an object or segment that was
                      * previously declared External
                      */
                     Node->Flags &= ~ANOBJ_IS_EXTERNAL;
                     Node->Type = (UINT8) ObjectType;
 
                     /* Just retyped a node, probably will need to open a scope */
 
                     if (AcpiNsOpensScope (ObjectType))
                     {
                         Status = AcpiDsScopeStackPush (
                             Node, ObjectType, WalkState);
                         if (ACPI_FAILURE (Status))
                         {
                             return_ACPI_STATUS (Status);
                         }
                     }
 
                     Status = AE_OK;
                 }
             }
 
             if (ACPI_FAILURE (Status))
             {
                 ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo, Path, Status);
                 return_ACPI_STATUS (Status);
             }
         }
         break;
     }
 
     /* Common exit */
 
     if (!Op)
     {
         /* Create a new op */
 
         Op = AcpiPsAllocOp (WalkState->Opcode, WalkState->Aml);
         if (!Op)
         {
             return_ACPI_STATUS (AE_NO_MEMORY);
         }
     }
 
     /* Initialize the op */
 
 #ifdef ACPI_CONSTANT_EVAL_ONLY
     Op->Named.Path = Path;
 #endif
 
     if (Node)
     {
         /*
          * Put the Node in the "op" object that the parser uses, so we
          * can get it again quickly when this scope is closed
          */
         Op->Common.Node = Node;
         Op->Named.Name = Node->Name.Integer;
     }
 
     AcpiPsAppendArg (AcpiPsGetParentScope (&WalkState->ParserState), Op);
     *OutOp = Op;
     return_ACPI_STATUS (Status);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiDsLoad1EndOp
  *
  * PARAMETERS:  WalkState       - Current state of the parse tree walk
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Ascending callback used during the loading of the namespace,
  *              both control methods and everything else.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiDsLoad1EndOp (
     ACPI_WALK_STATE         *WalkState)
 {
     ACPI_PARSE_OBJECT       *Op;
     ACPI_OBJECT_TYPE        ObjectType;
     ACPI_STATUS             Status = AE_OK;
 #ifdef ACPI_ASL_COMPILER
     UINT8                   ParamCount;
 #endif
 
 
     ACPI_FUNCTION_TRACE (DsLoad1EndOp);
 
 
     Op = WalkState->Op;
     ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
 
     /*
      * Disassembler: handle create field operators here.
      *
      * CreateBufferField is a deferred op that is typically processed in load
      * pass 2. However, disassembly of control method contents walk the parse
      * tree with ACPI_PARSE_LOAD_PASS1 and AML_CREATE operators are processed
      * in a later walk. This is a problem when there is a control method that
      * has the same name as the AML_CREATE object. In this case, any use of the
      * name segment will be detected as a method call rather than a reference
      * to a buffer field.
      *
      * This earlier creation during disassembly solves this issue by inserting
      * the named object in the ACPI namespace so that references to this name
      * would be a name string rather than a method call.
      */
     if ((WalkState->ParseFlags & ACPI_PARSE_DISASSEMBLE) &&
         (WalkState->OpInfo->Flags & AML_CREATE))
     {
         Status = AcpiDsCreateBufferField (Op, WalkState);
         return_ACPI_STATUS (Status);
     }
 
     /* We are only interested in opcodes that have an associated name */
 
     if (!(WalkState->OpInfo->Flags & (AML_NAMED | AML_FIELD)))
     {
         return_ACPI_STATUS (AE_OK);
     }
 
     /* Get the object type to determine if we should pop the scope */
 
     ObjectType = WalkState->OpInfo->ObjectType;
 
     if (WalkState->OpInfo->Flags & AML_FIELD)
     {
         /*
          * If we are executing a method, do not create any namespace objects
          * during the load phase, only during execution.
          */
         if (!WalkState->MethodNode)
         {
             if (WalkState->Opcode == AML_FIELD_OP          ||
                 WalkState->Opcode == AML_BANK_FIELD_OP     ||
                 WalkState->Opcode == AML_INDEX_FIELD_OP)
             {
                 Status = AcpiDsInitFieldObjects (Op, WalkState);
             }
         }
         return_ACPI_STATUS (Status);
     }
 
     /*
      * If we are executing a method, do not create any namespace objects
      * during the load phase, only during execution.
      */
     if (!WalkState->MethodNode)
     {
         if (Op->Common.AmlOpcode == AML_REGION_OP)
         {
             Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
                 (ACPI_ADR_SPACE_TYPE)
                     ((Op->Common.Value.Arg)->Common.Value.Integer),
                 WalkState);
             if (ACPI_FAILURE (Status))
             {
                 return_ACPI_STATUS (Status);
             }
         }
         else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP)
         {
             Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
                 ACPI_ADR_SPACE_DATA_TABLE, WalkState);
             if (ACPI_FAILURE (Status))
             {
                 return_ACPI_STATUS (Status);
             }
         }
     }
 
     if (Op->Common.AmlOpcode == AML_NAME_OP)
     {
         /* For Name opcode, get the object type from the argument */
 
         if (Op->Common.Value.Arg)
         {
             ObjectType = (AcpiPsGetOpcodeInfo (
                 (Op->Common.Value.Arg)->Common.AmlOpcode))->ObjectType;
 
             /* Set node type if we have a namespace node */
 
             if (Op->Common.Node)
             {
                 Op->Common.Node->Type = (UINT8) ObjectType;
             }
         }
     }
 
 #ifdef ACPI_ASL_COMPILER
     /*
      * For external opcode, get the object type from the argument and
      * get the parameter count from the argument's next.
      */
     if (AcpiGbl_DisasmFlag &&
         Op->Common.Node &&
         Op->Common.AmlOpcode == AML_EXTERNAL_OP)
     {
         /*
          * Note, if this external is not a method
          * Op->Common.Value.Arg->Common.Next->Common.Value.Integer == 0
          * Therefore, ParamCount will be 0.
          */
         ParamCount = (UINT8) Op->Common.Value.Arg->Common.Next->Common.Value.Integer;
         ObjectType = (UINT8) Op->Common.Value.Arg->Common.Value.Integer;
         Op->Common.Node->Flags |= ANOBJ_IS_EXTERNAL;
         Op->Common.Node->Type = (UINT8) ObjectType;
 
         AcpiDmCreateSubobjectForExternal ((UINT8)ObjectType,
             &Op->Common.Node, ParamCount);
 
         /*
          * Add the external to the external list because we may be
          * emitting code based off of the items within the external list.
          */
         AcpiDmAddOpToExternalList (Op, Op->Named.Path, (UINT8)ObjectType, ParamCount,
            ACPI_EXT_ORIGIN_FROM_OPCODE | ACPI_EXT_RESOLVED_REFERENCE);
     }
 #endif
 
     /*
      * If we are executing a method, do not create any namespace objects
      * during the load phase, only during execution.
      */
     if (!WalkState->MethodNode)
     {
         if (Op->Common.AmlOpcode == AML_METHOD_OP)
         {
             /*
              * MethodOp PkgLength NameString MethodFlags TermList
              *
              * Note: We must create the method node/object pair as soon as we
              * see the method declaration. This allows later pass1 parsing
              * of invocations of the method (need to know the number of
              * arguments.)
              */
             ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
                 "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
                 WalkState, Op, Op->Named.Node));
 
             if (!AcpiNsGetAttachedObject (Op->Named.Node))
             {
                 WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
                 WalkState->NumOperands = 1;
 
                 Status = AcpiDsCreateOperands (
                     WalkState, Op->Common.Value.Arg);
                 if (ACPI_SUCCESS (Status))
                 {
                     Status = AcpiExCreateMethod (Op->Named.Data,
                         Op->Named.Length, WalkState);
                 }
 
                 WalkState->Operands[0] = NULL;
                 WalkState->NumOperands = 0;
 
                 if (ACPI_FAILURE (Status))
                 {
                     return_ACPI_STATUS (Status);
                 }
             }
         }
     }
 
     /* Pop the scope stack (only if loading a table) */
 
     if (!WalkState->MethodNode &&
         Op->Common.AmlOpcode != AML_EXTERNAL_OP &&
         AcpiNsOpensScope (ObjectType))
     {
         ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s): Popping scope for Op %p\n",
             AcpiUtGetTypeName (ObjectType), Op));
 
         Status = AcpiDsScopeStackPop (WalkState);
     }
 
     return_ACPI_STATUS (Status);
 }

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