FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/compiler/aslload.c

     /******************************************************************************
      *
      * Module Name: aslload - compiler namespace load callbacks
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 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/compiler/aslcompiler.h>
   #include <contrib/dev/acpica/include/amlcode.h>
   #include <contrib/dev/acpica/include/acdispat.h>
   #include <contrib/dev/acpica/include/acnamesp.h>
   #include <contrib/dev/acpica/include/acparser.h>
   #include "aslcompiler.y.h"
   
   
   #define _COMPONENT          ACPI_COMPILER
           ACPI_MODULE_NAME    ("aslload")
   
   /* Local prototypes */
   
   static ACPI_STATUS
   LdLoadFieldElements (
       UINT32                  AmlType,
       ACPI_PARSE_OBJECT       *Op,
       ACPI_WALK_STATE         *WalkState);
   
   static ACPI_STATUS
   LdLoadResourceElements (
       ACPI_PARSE_OBJECT       *Op,
       ACPI_WALK_STATE         *WalkState);
   
   static ACPI_STATUS
   LdNamespace1Begin (
       ACPI_PARSE_OBJECT       *Op,
       UINT32                  Level,
       void                    *Context);
   
   static ACPI_STATUS
   LdNamespace2Begin (
       ACPI_PARSE_OBJECT       *Op,
       UINT32                  Level,
       void                    *Context);
   
   static ACPI_STATUS
   LdCommonNamespaceEnd (
       ACPI_PARSE_OBJECT       *Op,
       UINT32                  Level,
       void                    *Context);
   
   static void
   LdCheckSpecialNames (
       ACPI_NAMESPACE_NODE     *Node,
       ACPI_PARSE_OBJECT       *Op);
   
   static ACPI_STATUS
   LdAnalyzeExternals (
       ACPI_NAMESPACE_NODE     *Node,
       ACPI_PARSE_OBJECT       *Op,
       ACPI_OBJECT_TYPE        ExternalOpType,
       ACPI_WALK_STATE         *WalkState);
   
   
   /*******************************************************************************
    *
    * FUNCTION:    LdLoadNamespace
    *
    * PARAMETERS:  RootOp      - Root of the parse tree
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the
    *              named ASL/AML objects into the namespace. The namespace is
    *              constructed in order to resolve named references and references
    *              to named fields within resource templates/descriptors.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   LdLoadNamespace (
       ACPI_PARSE_OBJECT       *RootOp)
   {
       ACPI_WALK_STATE         *WalkState;
   
   
       /* Create a new walk state */
   
       WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL);
       if (!WalkState)
       {
           return (AE_NO_MEMORY);
       }
   
       /* Walk the entire parse tree, first pass */
   
       TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin,
           LdCommonNamespaceEnd, WalkState);
   
       /* Second pass to handle forward references */
   
       TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace2Begin,
           LdCommonNamespaceEnd, WalkState);
   
       /* Dump the namespace if debug is enabled */
   
       if (AcpiDbgLevel & ACPI_LV_TABLES)
       {
           AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX);
       }
   
       ACPI_FREE (WalkState);
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    LdLoadFieldElements
    *
    * PARAMETERS:  AmlType         - Type to search
    *              Op              - Parent node (Field)
    *              WalkState       - Current walk state
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Enter the named elements of the field (children of the parent)
    *              into the namespace.
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   LdLoadFieldElements (
       UINT32                  AmlType,
       ACPI_PARSE_OBJECT       *Op,
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_PARSE_OBJECT       *Child = NULL;
       ACPI_PARSE_OBJECT       *SourceRegion;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_STATUS             Status;
       char                    *ExternalPath;
   
   
       SourceRegion = UtGetArg (Op, 0);
       if (SourceRegion)
       {
           Status = AcpiNsLookup (WalkState->ScopeInfo,
               SourceRegion->Asl.Value.String, AmlType, ACPI_IMODE_EXECUTE,
               ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node);
           if (Status == AE_NOT_FOUND)
           {
               /*
                * If the named object is not found, it means that it is either a
                * forward reference or the named object does not exist.
                */
               SourceRegion->Asl.CompileFlags |= OP_NOT_FOUND_DURING_LOAD;
           }
       }
   
       /* Get the first named field element */
   
       switch (Op->Asl.AmlOpcode)
       {
       case AML_BANK_FIELD_OP:
   
           Child = UtGetArg (Op, 6);
           break;
   
       case AML_INDEX_FIELD_OP:
   
           Child = UtGetArg (Op, 5);
           break;
   
       case AML_FIELD_OP:
   
           Child = UtGetArg (Op, 4);
           break;
   
       default:
   
           /* No other opcodes should arrive here */
   
           return (AE_BAD_PARAMETER);
       }
   
       /* Enter all elements into the namespace */
   
       while (Child)
       {
           switch (Child->Asl.AmlOpcode)
           {
           case AML_INT_RESERVEDFIELD_OP:
           case AML_INT_ACCESSFIELD_OP:
           case AML_INT_CONNECTION_OP:
               break;
   
           default:
   
               Status = AcpiNsLookup (WalkState->ScopeInfo,
                   Child->Asl.Value.String,
                   ACPI_TYPE_LOCAL_REGION_FIELD,
                   ACPI_IMODE_LOAD_PASS1,
                   ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE |
                       ACPI_NS_ERROR_IF_FOUND, NULL, &Node);
               if (ACPI_FAILURE (Status))
               {
                   if (Status != AE_ALREADY_EXISTS)
                   {
                       AslError (ASL_ERROR, ASL_MSG_CORE_EXCEPTION, Child,
                           Child->Asl.Value.String);
                       return (Status);
                   }
                   else if (Status == AE_ALREADY_EXISTS &&
                       (Node->Flags & ANOBJ_IS_EXTERNAL))
                   {
                       Node->Type = (UINT8) ACPI_TYPE_LOCAL_REGION_FIELD;
                       Node->Flags &= ~ANOBJ_IS_EXTERNAL;
                   }
                   else
                   {
                       /*
                        * The name already exists in this scope
                        * But continue processing the elements
                        */
                       ExternalPath = AcpiNsGetNormalizedPathname (Node, TRUE);
   
                       AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child,
                           ExternalPath, ASL_MSG_FOUND_HERE, Node->Op,
                           ExternalPath);
   
                       if (ExternalPath)
                       {
                           ACPI_FREE (ExternalPath);
                       }
                   }
               }
               else
               {
                   Child->Asl.Node = Node;
                   Node->Op = Child;
               }
               break;
           }
   
           Child = Child->Asl.Next;
       }
   
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    LdLoadResourceElements
    *
    * PARAMETERS:  Op              - Parent node (Resource Descriptor)
    *              WalkState       - Current walk state
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Enter the named elements of the resource descriptor (children
    *              of the parent) into the namespace.
    *
    * NOTE: In the real AML namespace, these named elements never exist. But
    *       we simply use the namespace here as a symbol table so we can look
    *       them up as they are referenced.
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   LdLoadResourceElements (
       ACPI_PARSE_OBJECT       *Op,
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_PARSE_OBJECT       *InitializerOp = NULL;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_STATUS             Status;
       char                    *ExternalPath;
   
   
       /*
        * Enter the resource name into the namespace. Name must not already exist.
        * This opens a scope, so later field names are guaranteed to be new/unique.
        */
       Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath,
           ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1,
           ACPI_NS_NO_UPSEARCH | ACPI_NS_ERROR_IF_FOUND,
           WalkState, &Node);
       if (ACPI_FAILURE (Status))
       {
           if (Status == AE_ALREADY_EXISTS)
           {
               /* Actual node causing the error was saved in ParentMethod */
   
               ExternalPath = AcpiNsGetNormalizedPathname (Node, TRUE);
   
               AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS,
                   (ACPI_PARSE_OBJECT *) Op->Asl.ParentMethod,
                   ExternalPath, ASL_MSG_FOUND_HERE, Node->Op,
                   ExternalPath);
   
               if (ExternalPath)
               {
                   ACPI_FREE (ExternalPath);
               }
               return (AE_OK);
           }
           return (Status);
       }
   
       Node->Value = (UINT32) Op->Asl.Value.Integer;
       Node->Op = Op;
       Op->Asl.Node = Node;
   
       /*
        * Now enter the predefined fields, for easy lookup when referenced
        * by the source ASL
        */
       InitializerOp = ASL_GET_CHILD_NODE (Op);
       while (InitializerOp)
       {
           if (InitializerOp->Asl.ExternalName)
           {
               Status = AcpiNsLookup (WalkState->ScopeInfo,
                   InitializerOp->Asl.ExternalName,
                   ACPI_TYPE_LOCAL_RESOURCE_FIELD, ACPI_IMODE_LOAD_PASS1,
                   ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node);
               if (ACPI_FAILURE (Status))
               {
                   return (Status);
               }
   
               /*
                * Store the field offset and length in the namespace node
                * so it can be used when the field is referenced
                */
               Node->Value = InitializerOp->Asl.Value.Tag.BitOffset;
               Node->Length = InitializerOp->Asl.Value.Tag.BitLength;
               InitializerOp->Asl.Node = Node;
               Node->Op = InitializerOp;
           }
   
           InitializerOp = ASL_GET_PEER_NODE (InitializerOp);
       }
   
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    LdNamespace1Begin
    *
    * PARAMETERS:  ASL_WALK_CALLBACK
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Descending callback used during the parse tree walk. If this
    *              is a named AML opcode, enter into the namespace
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   LdNamespace1Begin (
       ACPI_PARSE_OBJECT       *Op,
       UINT32                  Level,
       void                    *Context)
   {
       ACPI_WALK_STATE         *WalkState = (ACPI_WALK_STATE *) Context;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_PARSE_OBJECT       *MethodOp;
       ACPI_STATUS             Status;
       ACPI_OBJECT_TYPE        ObjectType;
       char                    *Path;
       UINT32                  Flags = ACPI_NS_NO_UPSEARCH;
       ACPI_PARSE_OBJECT       *Arg;
       UINT32                  i;
       BOOLEAN                 ForceNewScope = FALSE;
       const ACPI_OPCODE_INFO  *OpInfo;
       ACPI_PARSE_OBJECT       *ParentOp;
       char                    *ExternalPath;
   
   
       ACPI_FUNCTION_NAME (LdNamespace1Begin);
   
   
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
           Op, Op->Asl.ParseOpName));
   
       /*
        * We are only interested in opcodes that have an associated name
        * (or multiple names)
        */
       switch (Op->Asl.AmlOpcode)
       {
       case AML_INDEX_FIELD_OP:
   
           Status = LdLoadFieldElements (ACPI_TYPE_LOCAL_REGION_FIELD, Op, WalkState);
           return (Status);
   
       case AML_BANK_FIELD_OP:
       case AML_FIELD_OP:
   
           Status = LdLoadFieldElements (ACPI_TYPE_REGION, Op, WalkState);
           return (Status);
   
       case AML_INT_CONNECTION_OP:
   
           if (Op->Asl.Child->Asl.AmlOpcode != AML_INT_NAMEPATH_OP)
           {
               break;
           }
   
           Arg = Op->Asl.Child;
           Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Asl.ExternalName,
               ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
               WalkState, &Node);
           if (ACPI_FAILURE (Status))
           {
               break;
           }
   
           break;
   
       default:
   
           /* All other opcodes go below */
   
           break;
       }
   
       /* Check if this object has already been installed in the namespace */
   
       if (Op->Asl.Node)
       {
           return (AE_OK);
       }
   
       /* Check for a possible illegal forward reference */
   
       if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
           (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
           (Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
       {
           /*
            * Op->Asl.Namepath will be NULL for these opcodes.
            * These opcodes are guaranteed to have a parent.
            * Examine the parent opcode.
            */
           ParentOp = Op->Asl.Parent;
           OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Asl.AmlOpcode);
   
           /*
            * Exclude all operators that actually declare a new name:
            *      Name (ABCD, 1) -> Ignore (AML_CLASS_NAMED_OBJECT)
            * We only want references to named objects:
            *      Store (2, WXYZ) -> Attempt to resolve the name
            */
           if ((Op->Asl.ParseOpcode != PARSEOP_METHODCALL) &&
               (OpInfo->Class == AML_CLASS_NAMED_OBJECT))
           {
               return (AE_OK);
           }
   
           /*
            * Check if the referenced object exists at this point during
            * the load:
            * 1) If it exists, then this cannot be a forward reference.
            * 2) If it does not exist, it could be a forward reference or
            * it truly does not exist (and no external declaration).
            */
           Status = AcpiNsLookup (WalkState->ScopeInfo,
               Op->Asl.Value.Name, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
               ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
               WalkState, &Node);
           if (Status == AE_NOT_FOUND)
           {
               /*
                * This is either a forward reference or the object truly
                * does not exist. The two cases can only be differentiated
                * during the cross-reference stage later. Mark the Op/Name
                * as not-found for now to indicate the need for further
                * processing.
                *
                * Special case: Allow forward references from elements of
                * Package objects. This provides compatibility with other
                * ACPI implementations. To correctly implement this, the
                * ACPICA table load defers package resolution until the entire
                * namespace has been loaded.
                */
               if ((ParentOp->Asl.ParseOpcode != PARSEOP_PACKAGE) &&
                   (ParentOp->Asl.ParseOpcode != PARSEOP_VAR_PACKAGE))
               {
                   Op->Asl.CompileFlags |= OP_NOT_FOUND_DURING_LOAD;
               }
   
               return (AE_OK);
           }
   
           return (Status);
       }
   
       Path = Op->Asl.Namepath;
       if (!Path)
       {
           return (AE_OK);
       }
   
       /* Map the raw opcode into an internal object type */
   
       switch (Op->Asl.ParseOpcode)
       {
       case PARSEOP_NAME:
   
           Arg = Op->Asl.Child;  /* Get the NameSeg/NameString node */
           Arg = Arg->Asl.Next;  /* First peer is the object to be associated with the name */
   
           /*
            * If this name refers to a ResourceTemplate, we will need to open
            * a new scope so that the resource subfield names can be entered into
            * the namespace underneath this name
            */
           if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
           {
               ForceNewScope = TRUE;
           }
   
           /* Get the data type associated with the named object, not the name itself */
   
           /* Log2 loop to convert from Btype (binary) to Etype (encoded) */
   
           ObjectType = 1;
           for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2)
           {
               ObjectType++;
           }
           break;
   
       case PARSEOP_EXTERNAL:
           /*
            * "External" simply enters a name and type into the namespace.
            * We must be careful to not open a new scope, however, no matter
            * what type the external name refers to (e.g., a method)
            *
            * first child is name, next child is ObjectType
            */
           ObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer;
   
           /*
            * We will mark every new node along the path as "External". This
            * allows some or all of the nodes to be created later in the ASL
            * code. Handles cases like this:
            *
            *   External (\_SB_.PCI0.ABCD, IntObj)
            *   Scope (_SB_)
            *   {
            *       Device (PCI0)
            *       {
            *       }
            *   }
            *   Method (X)
            *   {
            *       Store (\_SB_.PCI0.ABCD, Local0)
            *   }
            */
           Flags |= ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE;
           break;
   
       case PARSEOP_DEFAULT_ARG:
   
           if (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC)
           {
               Status = LdLoadResourceElements (Op, WalkState);
               return_ACPI_STATUS (Status);
           }
   
           ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
           break;
   
       case PARSEOP_SCOPE:
           /*
            * The name referenced by Scope(Name) must already exist at this point.
            * In other words, forward references for Scope() are not supported.
            * The only real reason for this is that the MS interpreter cannot
            * handle this case. Perhaps someday this case can go away.
            */
           Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
               ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, WalkState, &Node);
           if (ACPI_FAILURE (Status))
           {
               if (Status == AE_NOT_FOUND)
               {
                   /* The name was not found, go ahead and create it */
   
                   Status = AcpiNsLookup (WalkState->ScopeInfo, Path,
                       ACPI_TYPE_LOCAL_SCOPE, ACPI_IMODE_LOAD_PASS1,
                       Flags, WalkState, &Node);
                   if (ACPI_FAILURE (Status))
                   {
                       return_ACPI_STATUS (Status);
                   }
   
                   /* However, this is an error -- operand to Scope must exist */
   
                   if (strlen (Op->Asl.ExternalName) == ACPI_NAMESEG_SIZE)
                   {
                       AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
                           Op->Asl.ExternalName);
                   }
                   else
                   {
                       AslError (ASL_ERROR, ASL_MSG_NAMEPATH_NOT_EXIST, Op,
                           Op->Asl.ExternalName);
                   }
   
                   goto FinishNode;
               }
   
               AslCoreSubsystemError (Op, Status,
                   "Failure from namespace lookup", FALSE);
   
               return_ACPI_STATUS (Status);
           }
           else /* Status AE_OK */
           {
               /*
                * Do not allow references to external scopes from the DSDT.
                * This is because the DSDT is always loaded first, and the
                * external reference cannot be resolved -- causing a runtime
                * error because Scope() must be resolved immediately.
                * 10/2015.
                */
               if ((Node->Flags & ANOBJ_IS_EXTERNAL) &&
                   (ACPI_COMPARE_NAMESEG (AslGbl_TableSignature, "DSDT")))
               {
                   /* However, allowed if the reference is within a method */
   
                   MethodOp = Op->Asl.Parent;
                   while (MethodOp &&
                         (MethodOp->Asl.ParseOpcode != PARSEOP_METHOD))
                   {
                       MethodOp = MethodOp->Asl.Parent;
                   }
   
                   if (!MethodOp)
                   {
                       /* Not in a control method, error */
   
                       AslError (ASL_ERROR, ASL_MSG_CROSS_TABLE_SCOPE, Op, NULL);
                   }
               }
           }
   
           /* We found a node with this name, now check the type */
   
           switch (Node->Type)
           {
           case ACPI_TYPE_LOCAL_SCOPE:
           case ACPI_TYPE_DEVICE:
           case ACPI_TYPE_POWER:
           case ACPI_TYPE_PROCESSOR:
           case ACPI_TYPE_THERMAL:
   
               /* These are acceptable types - they all open a new scope */
               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) { ... }
                *
                * Which is used to workaround the fact that the MS interpreter
                * does not allow Scope() forward references.
                */
               sprintf (AslGbl_MsgBuffer, "%s [%s], changing type to [Scope]",
                   Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type));
               AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, AslGbl_MsgBuffer);
   
               /* Switch the type to scope, open the new scope */
   
               Node->Type = ACPI_TYPE_LOCAL_SCOPE;
               Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE,
                   WalkState);
               if (ACPI_FAILURE (Status))
               {
                   return_ACPI_STATUS (Status);
               }
               break;
   
           default:
   
               /* All other types are an error */
   
               sprintf (AslGbl_MsgBuffer, "%s [%s]", Op->Asl.ExternalName,
                   AcpiUtGetTypeName (Node->Type));
               AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, AslGbl_MsgBuffer);
   
               /*
                * However, switch the type to be an actual scope so
                * that compilation can continue without generating a whole
                * cascade of additional errors. Open the new scope.
                */
               Node->Type = ACPI_TYPE_LOCAL_SCOPE;
               Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE,
                   WalkState);
               if (ACPI_FAILURE (Status))
               {
                   return_ACPI_STATUS (Status);
               }
               break;
           }
   
           Status = AE_OK;
           goto FinishNode;
   
       default:
   
           ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
           break;
       }
   
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n",
           Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType)));
   
       /* The name must not already exist */
   
       Flags |= ACPI_NS_ERROR_IF_FOUND;
   
       /*
        * For opcodes that enter new names into the namespace,
        * all prefix NameSegs must exist.
        */
       WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
       if (((WalkState->OpInfo->Flags & AML_NAMED) ||
           (WalkState->OpInfo->Flags & AML_CREATE)) &&
           (Op->Asl.AmlOpcode != AML_EXTERNAL_OP))
       {
           Flags |= ACPI_NS_PREFIX_MUST_EXIST;
       }
   
       /*
        * 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->Type == ACPI_TYPE_LOCAL_SCOPE)
               {
                   /* Allow multiple references to the same scope */
   
                   Node->Type = (UINT8) ObjectType;
                   Status = AE_OK;
               }
               else if ((Node->Flags & ANOBJ_IS_EXTERNAL) ||
                        (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL))
               {
                   Status = LdAnalyzeExternals (Node, Op, ObjectType, WalkState);
                   if (ACPI_FAILURE (Status))
                   {
                       if (Status == AE_ERROR)
                       {
                           /*
                            * The use of AE_ERROR here indicates that there was a
                            * compiler error emitted in LdAnalyzeExternals which
                            * means that the caller should proceed to the next Op
                            * for analysis of subsequent parse objects.
                            */
                           Status = AE_OK;
                       }
                       return_ACPI_STATUS (Status);
                   }
   
                   if (!(Node->Flags & ANOBJ_IS_EXTERNAL) &&
                        (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL))
                   {
                       /*
                        * If we get to here, it means that an actual definition of
                        * the object declared external exists. Meaning that Op
                        * loading this this Op should have no change to the ACPI
                        * namespace. By going to FinishNode, we skip the
                        * assignment of Node->Op = Op.
                        */
                       goto FinishNode;
                   }
               }
               else
               {
                   /* Valid error, object already exists */
   
                   ExternalPath = AcpiNsGetNormalizedPathname (Node, TRUE);
   
                   AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op,
                       ExternalPath, ASL_MSG_FOUND_HERE, Node->Op,
                       ExternalPath);
   
                   if (ExternalPath)
                   {
                       ACPI_FREE (ExternalPath);
                   }
                   return_ACPI_STATUS (AE_OK);
               }
           }
           else if (AE_NOT_FOUND)
           {
               /*
                * One or more prefix NameSegs of the NamePath do not exist
                * (all of them must exist). Attempt to continue compilation
                * by setting the current scope to the root.
                */
               Node = AcpiGbl_RootNode;
               Status = AE_OK;
           }
           else
           {
               /* Flag all other errors as coming from the ACPICA core */
   
               AslCoreSubsystemError (Op, Status,
                   "Failure from namespace lookup", FALSE);
               return_ACPI_STATUS (Status);
           }
       }
   
       /* Check special names like _WAK and _PTS */
   
       LdCheckSpecialNames (Node, Op);
   
       if (ForceNewScope)
       {
           Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
           if (ACPI_FAILURE (Status))
           {
               return_ACPI_STATUS (Status);
           }
       }
   
       /* Point the Node back to the original Parse node */
   
       Node->Op = Op;
   
   FinishNode:
   
       /* Point the parse node to the new namespace node */
   
      Op->Asl.Node = Node;
  
      if (Op->Asl.ParseOpcode == PARSEOP_METHOD)
      {
          /*
           * Get the method argument count from "Extra" and save
           * it in the namespace node
           */
          Node->Value = (UINT32) Op->Asl.Extra;
      }
      else if (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL &&
          Node->Type == ACPI_TYPE_METHOD &&
          (Node->Flags & ANOBJ_IS_EXTERNAL))
      {
          Node->Value =
              (UINT32) Op->Asl.Child->Asl.Next->Asl.Next->Asl.Value.Integer;
      }
  
      return_ACPI_STATUS (Status);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    LdMatchExternType
   *
   * PARAMETERS:  Type1
   *              Type2
   *
   * RETURN:      BOOLEAN
   *
   * DESCRIPTION: Match Type1 and Type2 with the assumption that one might be
   *              using external types and another might be using local types.
   *              This should be used to compare the types found in external
   *              declarations with types found in other external declarations or
   *              named object declaration. This should not be used to match two
   *              object type declarations.
   *
   ******************************************************************************/
  
  static BOOLEAN
  LdMatchExternType (
      ACPI_OBJECT_TYPE        Type1,
      ACPI_OBJECT_TYPE        Type2)
  {
      BOOLEAN                 Type1IsLocal = Type1 > ACPI_TYPE_EXTERNAL_MAX;
      BOOLEAN                 Type2IsLocal = Type2 > ACPI_TYPE_EXTERNAL_MAX;
      ACPI_OBJECT_TYPE        ExternalType;
      ACPI_OBJECT_TYPE        LocalType;
  
  
      /*
       * The inputs could represent types that are local to ACPICA or types that
       * are known externally. Some local types, such as the OperationRegion
       * field units, are defined with more granularity than ACPICA local types.
       *
       * Therefore, map the local types to the external types before matching.
       */
      if (Type1IsLocal && !Type2IsLocal)
      {
          LocalType = Type1;
          ExternalType = Type2;
      }
      else if (!Type1IsLocal && Type2IsLocal)
      {
          LocalType = Type2;
          ExternalType = Type1;
      }
      else
      {
          return (Type1 == Type2);
      }
  
      switch (LocalType)
      {
          case ACPI_TYPE_LOCAL_REGION_FIELD:
          case ACPI_TYPE_LOCAL_BANK_FIELD:
          case ACPI_TYPE_LOCAL_INDEX_FIELD:
  
              LocalType = ACPI_TYPE_FIELD_UNIT;
              break;
  
          default:
              break;
      }
  
      return (LocalType == ExternalType);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    LdAnalyzeExternals
   *
   * PARAMETERS:  Node            - Node that represents the named object
   *              Op              - Named object declaring this named object
   *              ExternalOpType  - Type of ExternalOp
   *              WalkState       - Current WalkState
   *
   * RETURN:      Status
   *
   * DESCRIPTION: Node and Op represents an identically named object declaration
   *              that is either declared by the ASL external keyword or declared
   *              by operators that declare named objects (i.e. Name, Device,
   *              OperationRegion, and etc.). This function ensures that the
   *              declarations do not contradict each other.
   *
   ******************************************************************************/
  
  static ACPI_STATUS
  LdAnalyzeExternals (
      ACPI_NAMESPACE_NODE     *Node,
      ACPI_PARSE_OBJECT       *Op,
      ACPI_OBJECT_TYPE        ExternalOpType,
      ACPI_WALK_STATE         *WalkState)
  {
      ACPI_STATUS             Status = AE_OK;
      ACPI_OBJECT_TYPE        ActualExternalOpType;
      ACPI_OBJECT_TYPE        ActualOpType;
      ACPI_PARSE_OBJECT       *ExternalOp;
      ACPI_PARSE_OBJECT       *ActualOp;
  
  
      /*
       * The declaration represented by Node and Op must have the same type.
       * The type of the external Op is represented by ExternalOpType. However,
       * the type of the pre-existing declaration depends on whether if Op
       * is an external declaration or an actual declaration.
       */
      if (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL)
      {
          ActualExternalOpType = ExternalOpType;
          ActualOpType = Node->Type;
      }
      else
      {
          ActualExternalOpType = Node->Type;
          ActualOpType = ExternalOpType;
      }
  
      if ((ActualOpType != ACPI_TYPE_ANY) &&
          (ActualExternalOpType != ACPI_TYPE_ANY) &&
          !LdMatchExternType (ActualExternalOpType, ActualOpType))
      {
          if (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL &&
              Node->Op->Asl.ParseOpcode == PARSEOP_EXTERNAL)
          {
              AslDualParseOpError (ASL_WARNING,
                  ASL_MSG_DUPLICATE_EXTERN_MISMATCH, Op, NULL,
                  ASL_MSG_DUPLICATE_EXTERN_FOUND_HERE, Node->Op, NULL);
          }
          else
          {
              if (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL &&
                  Node->Op->Asl.ParseOpcode != PARSEOP_EXTERNAL)
              {
                  ExternalOp = Op;
                  ActualOp = Node->Op;
              }
              else
              {
                  ExternalOp = Node->Op;
                  ActualOp = Op;
              }
              AslDualParseOpError (ASL_WARNING,
                  ASL_MSG_DECLARATION_TYPE_MISMATCH, ExternalOp, NULL,
                  ASL_MSG_TYPE_MISMATCH_FOUND_HERE, ActualOp, NULL);
          }
      }
  
      /* Set the object type of the external */
  
      if ((Node->Flags & ANOBJ_IS_EXTERNAL) &&
          (Op->Asl.ParseOpcode != PARSEOP_EXTERNAL))
      {
          /*
           * Allow one create on an object or segment that was
           * previously declared External
           */
          Node->Flags &= ~ANOBJ_IS_EXTERNAL;
          Node->Type = (UINT8) ActualOpType;
  
          /* Just retyped a node, probably will need to open a scope */
  
          if (AcpiNsOpensScope (ActualOpType))
          {
              Status = AcpiDsScopeStackPush (Node, ActualOpType, WalkState);
              if (ACPI_FAILURE (Status))
              {
                  return (Status);
              }
          }
  
          Status = AE_OK;
      }
      else if (!(Node->Flags & ANOBJ_IS_EXTERNAL) &&
               (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL))
      {
          /*
           * Allow externals in same scope as the definition of the
           * actual object. Similar to C. Allows multiple definition
           * blocks that refer to each other in the same file.
           */
          Status = AE_OK;
      }
      else if ((Node->Flags & ANOBJ_IS_EXTERNAL) &&
               (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL) &&
               (ActualOpType == ACPI_TYPE_ANY))
      {
          /* Allow update of externals of unknown type. */
  
          Node->Type = (UINT8) ActualExternalOpType;
          Status = AE_OK;
      }
  
      return (Status);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    LdCheckSpecialNames
   *
   * PARAMETERS:  Node        - Node that represents the named object
   *              Op          - Named object declaring this named object
   *
   * RETURN:      None
   *
   * DESCRIPTION: Check if certain named objects are declared in the incorrect
   *              scope. Special named objects are listed in
   *              AslGbl_SpecialNamedObjects and can only be declared at the root
   *              scope. _UID inside of a processor declaration must not be a
   *              string.
   *
   ******************************************************************************/
  
  static void
  LdCheckSpecialNames (
      ACPI_NAMESPACE_NODE     *Node,
      ACPI_PARSE_OBJECT       *Op)
  {
      UINT32                  i;
  
  
      for (i = 0; i < MAX_SPECIAL_NAMES; i++)
      {
          if (ACPI_COMPARE_NAMESEG(Node->Name.Ascii, AslGbl_SpecialNamedObjects[i]) &&
              Node->Parent != AcpiGbl_RootNode)
          {
              AslError (ASL_ERROR, ASL_MSG_INVALID_SPECIAL_NAME, Op, Op->Asl.ExternalName);
              return;
          }
      }
  
      if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, "_UID") &&
          Node->Parent->Type == ACPI_TYPE_PROCESSOR &&
          Node->Type == ACPI_TYPE_STRING)
      {
          AslError (ASL_ERROR, ASL_MSG_INVALID_PROCESSOR_UID , Op, "found a string");
      }
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    LdNamespace2Begin
   *
   * PARAMETERS:  ASL_WALK_CALLBACK
   *
   * RETURN:      Status
   *
   * DESCRIPTION: Descending callback used during the pass 2 parse tree walk.
   *              Second pass resolves some forward references.
   *
   * Notes:
   * Currently only needs to handle the Alias operator.
   * Could be used to allow forward references from the Scope() operator, but
   * the MS interpreter does not allow this, so this compiler does not either.
   *
   ******************************************************************************/
  
  static ACPI_STATUS
  LdNamespace2Begin (
      ACPI_PARSE_OBJECT       *Op,
      UINT32                  Level,
      void                    *Context)
  {
      ACPI_WALK_STATE         *WalkState = (ACPI_WALK_STATE *) Context;
      ACPI_STATUS             Status;
      ACPI_NAMESPACE_NODE     *Node;
      ACPI_OBJECT_TYPE        ObjectType;
      BOOLEAN                 ForceNewScope = FALSE;
      ACPI_PARSE_OBJECT       *Arg;
      char                    *Path;
      ACPI_NAMESPACE_NODE     *TargetNode;
  
  
      ACPI_FUNCTION_NAME (LdNamespace2Begin);
      ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n",
          Op, Op->Asl.ParseOpName));
  
  
      /* Ignore Ops with no namespace node */
  
      Node = Op->Asl.Node;
      if (!Node)
      {
          return (AE_OK);
      }
  
      /* Get the type to determine if we should push the scope */
  
      if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
          (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC))
      {
          ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
      }
      else
      {
          ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
      }
  
      /* Push scope for Resource Templates */
  
      if (Op->Asl.ParseOpcode == PARSEOP_NAME)
      {
          if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
          {
              ForceNewScope = TRUE;
          }
      }
  
      /* Push the scope stack */
  
      if (ForceNewScope || AcpiNsOpensScope (ObjectType))
      {
          Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
          if (ACPI_FAILURE (Status))
          {
              return_ACPI_STATUS (Status);
          }
      }
  
      if (Op->Asl.ParseOpcode == PARSEOP_ALIAS)
      {
          /*
           * Complete the alias node by getting and saving the target node.
           * First child is the alias target
           */
          Arg = Op->Asl.Child;
  
          /* Get the target pathname */
  
          Path = Arg->Asl.Namepath;
          if (!Path)
          {
              Status = UtInternalizeName (Arg->Asl.ExternalName, &Path);
              if (ACPI_FAILURE (Status))
              {
                  return (Status);
              }
          }
  
          /* Get the NS node associated with the target. It must exist. */
  
          Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
              ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
              WalkState, &TargetNode);
          if (ACPI_FAILURE (Status))
          {
              if (Status == AE_NOT_FOUND)
              {
                  /* Standalone NameSeg vs. NamePath */
  
                  if (strlen (Arg->Asl.ExternalName) == ACPI_NAMESEG_SIZE)
                  {
                      AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op,
                          Arg->Asl.ExternalName);
                  }
                  else
                  {
                      AslError (ASL_ERROR, ASL_MSG_NAMEPATH_NOT_EXIST, Op,
                          Arg->Asl.ExternalName);
                  }
  
  #if 0
  /*
   * NOTE: Removed 10/2018 to enhance compiler error reporting. No
   * regressions seen.
   */
                  /*
                   * The name was not found, go ahead and create it.
                   * This prevents more errors later.
                   */
                  Status = AcpiNsLookup (WalkState->ScopeInfo, Path,
                      ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS1,
                      ACPI_NS_NO_UPSEARCH, WalkState, &Node);
  #endif
                  return (Status);
  /* Removed: return (AE_OK)*/
              }
  
              AslCoreSubsystemError (Op, Status,
                  "Failure from namespace lookup", FALSE);
              return (AE_OK);
          }
  
          /* Save the target node within the alias node as well as type information */
  
          Node->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode);
          Node->Type = TargetNode->Type;
          if (Node->Type == ACPI_TYPE_METHOD)
          {
              /* Save the parameter count for methods */
  
              Node->Value = TargetNode->Value;
          }
      }
  
      return (AE_OK);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    LdCommonNamespaceEnd
   *
   * PARAMETERS:  ASL_WALK_CALLBACK
   *
   * RETURN:      Status
   *
   * DESCRIPTION: Ascending callback used during the loading of the namespace,
   *              We only need to worry about managing the scope stack here.
   *
   ******************************************************************************/
  
  static ACPI_STATUS
  LdCommonNamespaceEnd (
      ACPI_PARSE_OBJECT       *Op,
      UINT32                  Level,
      void                    *Context)
  {
      ACPI_WALK_STATE         *WalkState = (ACPI_WALK_STATE *) Context;
      ACPI_OBJECT_TYPE        ObjectType;
      BOOLEAN                 ForceNewScope = FALSE;
  
  
      ACPI_FUNCTION_NAME (LdCommonNamespaceEnd);
  
  
      /* We are only interested in opcodes that have an associated name */
  
      if (!Op->Asl.Namepath)
      {
          return (AE_OK);
      }
  
      /* Get the type to determine if we should pop the scope */
  
      if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) &&
          (Op->Asl.CompileFlags == OP_IS_RESOURCE_DESC))
      {
          /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */
  
          ObjectType = ACPI_TYPE_LOCAL_RESOURCE;
      }
      else
      {
          ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
      }
  
      /* Pop scope that was pushed for Resource Templates */
  
      if (Op->Asl.ParseOpcode == PARSEOP_NAME)
      {
          if (Op->Asl.CompileFlags & OP_IS_RESOURCE_DESC)
          {
              ForceNewScope = TRUE;
          }
      }
  
      /* Pop the scope stack */
  
      if (ForceNewScope || AcpiNsOpensScope (ObjectType))
      {
          ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
              "(%s): Popping scope for Op [%s] %p\n",
              AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op));
  
          (void) AcpiDsScopeStackPop (WalkState);
      }
  
      return (AE_OK);
  }

Cache object: dda662482ef3dcb0df9a13a06db1a150