FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/dispatcher/dswload.c

     /******************************************************************************
      *
      * Module Name: dswload - Dispatcher first pass 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/include/acpi.h>
   #include <contrib/dev/acpica/include/accommon.h>
   #include <contrib/dev/acpica/include/acparser.h>
   #include <contrib/dev/acpica/include/amlcode.h>
   #include <contrib/dev/acpica/include/acdispat.h>
   #include <contrib/dev/acpica/include/acinterp.h>
   #include <contrib/dev/acpica/include/acnamesp.h>
   #ifdef ACPI_ASL_COMPILER
   #include <contrib/dev/acpica/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);
   }

Cache object: 0ac0a793e5c4f2c10b27a8b951bd9a83