FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/dispatcher/dswload2.c

     /******************************************************************************
      *
      * Module Name: dswload2 - Dispatcher second 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>
   #include <contrib/dev/acpica/include/acevents.h>
   #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
   #include "aecommon.h"
   #endif
   
   #define _COMPONENT          ACPI_DISPATCHER
           ACPI_MODULE_NAME    ("dswload2")
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsLoad2BeginOp
    *
    * 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
   AcpiDsLoad2BeginOp (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       **OutOp)
   {
       ACPI_PARSE_OBJECT       *Op;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_STATUS             Status;
       ACPI_OBJECT_TYPE        ObjectType;
       char                    *BufferPtr;
       UINT32                  Flags;
   
   
       ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
   
   
       Op = WalkState->Op;
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
   
       if (Op)
       {
           if ((WalkState->ControlState) &&
               (WalkState->ControlState->Common.State ==
                   ACPI_CONTROL_CONDITIONAL_EXECUTING))
           {
               /* We are executing a while loop outside of a method */
   
               Status = AcpiDsExecBeginOp (WalkState, OutOp);
               return_ACPI_STATUS (Status);
           }
   
           /* We only care about Namespace opcodes here */
   
           if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE)   &&
                 (WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
               (!(WalkState->OpInfo->Flags & AML_NAMED)))
           {
               return_ACPI_STATUS (AE_OK);
           }
   
           /* Get the name we are going to enter or lookup in the namespace */
   
           if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
           {
               /* For Namepath op, get the path string */
   
               BufferPtr = Op->Common.Value.String;
               if (!BufferPtr)
               {
                   /* No name, just exit */
   
                   return_ACPI_STATUS (AE_OK);
               }
           }
           else
           {
               /* Get name from the op */
   
               BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
           }
       }
       else
       {
           /* Get the namestring from the raw AML */
   
           BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
       }
   
       /* Map the opcode into an internal object type */
   
       ObjectType = WalkState->OpInfo->ObjectType;
   
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
           "State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
   
       switch (WalkState->Opcode)
       {
       case AML_FIELD_OP:
       case AML_BANK_FIELD_OP:
       case AML_INDEX_FIELD_OP:
   
           Node = NULL;
           Status = AE_OK;
           break;
   
       case AML_INT_NAMEPATH_OP:
           /*
            * The NamePath is an object reference to an existing object.
            * Don't enter the name into the namespace, but look it up
            * for use later.
            */
           Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
               ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
               WalkState, &(Node));
           break;
   
       case AML_SCOPE_OP:
   
           /* Special case for Scope(\) -> refers to the Root node */
   
           if (Op && (Op->Named.Node == AcpiGbl_RootNode))
           {
               Node = Op->Named.Node;
   
               Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
               if (ACPI_FAILURE (Status))
               {
                   return_ACPI_STATUS (Status);
               }
           }
           else
           {
               /*
                * The Path is an object reference to an existing object.
                * Don't enter the name into the namespace, but look it up
                * for use later.
                */
               Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
                   ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
                   WalkState, &(Node));
               if (ACPI_FAILURE (Status))
               {
   #ifdef ACPI_ASL_COMPILER
                   if (Status == AE_NOT_FOUND)
                   {
                       Status = AE_OK;
                   }
                   else
                   {
                       ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
                           BufferPtr, Status);
                   }
   #else
                   ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
                       BufferPtr, Status);
   #endif
                   return_ACPI_STATUS (Status);
               }
           }
   
           /*
            * We must 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) { ... }
                */
               ACPI_WARNING ((AE_INFO,
                   "Type override - [%4.4s] had invalid type (%s) "
                   "for Scope operator, changed to type ANY",
                   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:
   
           /* All other opcodes */
   
           if (Op && Op->Common.Node)
           {
               /* This op/node was previously entered into the namespace */
   
               Node = Op->Common.Node;
   
               if (AcpiNsOpensScope (ObjectType))
               {
                   Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
                   if (ACPI_FAILURE (Status))
                   {
                       return_ACPI_STATUS (Status);
                   }
               }
   
               return_ACPI_STATUS (AE_OK);
           }
   
           /*
            * 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.
            *
            * Note: Name may already exist if we are executing a deferred opcode.
            */
           if (WalkState->DeferredNode)
           {
               /* This name is already in the namespace, get the node */
   
               Node = WalkState->DeferredNode;
               Status = AE_OK;
               break;
           }
   
           Flags = ACPI_NS_NO_UPSEARCH;
           if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
           {
               /* Execution mode, node cannot already exist, node is temporary */
   
               Flags |= ACPI_NS_ERROR_IF_FOUND;
   
               if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
               {
                   Flags |= ACPI_NS_TEMPORARY;
               }
           }
   
   #ifdef ACPI_ASL_COMPILER
   
           /*
            * Do not open a scope for AML_EXTERNAL_OP
            * AcpiNsLookup can open a new scope based on the object type
            * of this op. AML_EXTERNAL_OP is a declaration rather than a
            * definition. In the case that this external is a method object,
            * AcpiNsLookup will open a new scope. However, an AML_EXTERNAL_OP
            * associated with the ACPI_TYPE_METHOD is a declaration, rather than
            * a definition. Flags is set to avoid opening a scope for any
            * AML_EXTERNAL_OP.
            */
           if (WalkState->Opcode == AML_EXTERNAL_OP)
           {
               Flags |= ACPI_NS_DONT_OPEN_SCOPE;
           }
   #endif
   
           /*
            * For name creation opcodes, the full namepath prefix must
            * exist, except for the final (new) nameseg.
            */
           if (WalkState->OpInfo->Flags & AML_NAMED)
           {
               Flags |= ACPI_NS_PREFIX_MUST_EXIST;
           }
   
           /* Add new entry or lookup existing entry */
   
           Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
               ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
   
           if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
           {
               ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
                   "***New Node [%4.4s] %p is temporary\n",
                   AcpiUtGetNodeName (Node), Node));
           }
           break;
       }
   
       if (ACPI_FAILURE (Status))
       {
           ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
               BufferPtr, Status);
           return_ACPI_STATUS (Status);
       }
   
       if (!Op)
       {
           /* Create a new op */
   
           Op = AcpiPsAllocOp (WalkState->Opcode, WalkState->Aml);
           if (!Op)
           {
               return_ACPI_STATUS (AE_NO_MEMORY);
           }
   
           /* Initialize the new op */
   
           if (Node)
           {
               Op->Named.Name = Node->Name.Integer;
           }
           *OutOp = Op;
       }
   
       /*
        * 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;
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDsLoad2EndOp
    *
    * 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
   AcpiDsLoad2EndOp (
       ACPI_WALK_STATE         *WalkState)
   {
       ACPI_PARSE_OBJECT       *Op;
       ACPI_STATUS             Status = AE_OK;
       ACPI_OBJECT_TYPE        ObjectType;
       ACPI_NAMESPACE_NODE     *Node;
       ACPI_PARSE_OBJECT       *Arg;
       ACPI_NAMESPACE_NODE     *NewNode;
       UINT32                  i;
       UINT8                   RegionSpace;
   #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
       ACPI_OPERAND_OBJECT     *ObjDesc;
       char                    *Namepath;
   #endif
   
   
       ACPI_FUNCTION_TRACE (DsLoad2EndOp);
   
       Op = WalkState->Op;
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
           WalkState->OpInfo->Name, Op, WalkState));
   
       /* Check if opcode had an associated namespace object */
   
       if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
       {
           return_ACPI_STATUS (AE_OK);
       }
   
       if (Op->Common.AmlOpcode == AML_SCOPE_OP)
       {
           ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
               "Ending scope Op=%p State=%p\n", Op, WalkState));
       }
   
       ObjectType = WalkState->OpInfo->ObjectType;
   
       /*
        * Get the Node/name from the earlier lookup
        * (It was saved in the *op structure)
        */
       Node = Op->Common.Node;
   
       /*
        * Put the Node on the object stack (Contains the ACPI Name of
        * this object)
        */
       WalkState->Operands[0] = (void *) Node;
       WalkState->NumOperands = 1;
   
       /* Pop the scope stack */
   
       if (AcpiNsOpensScope (ObjectType) &&
          (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
       {
           ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
               AcpiUtGetTypeName (ObjectType), Op));
   
           Status = AcpiDsScopeStackPop (WalkState);
           if (ACPI_FAILURE (Status))
           {
               goto Cleanup;
           }
       }
   
       /*
        * Named operations are as follows:
        *
        * AML_ALIAS
        * AML_BANKFIELD
        * AML_CREATEBITFIELD
        * AML_CREATEBYTEFIELD
        * AML_CREATEDWORDFIELD
        * AML_CREATEFIELD
        * AML_CREATEQWORDFIELD
        * AML_CREATEWORDFIELD
        * AML_DATA_REGION
        * AML_DEVICE
        * AML_EVENT
        * AML_FIELD
        * AML_INDEXFIELD
        * AML_METHOD
        * AML_METHODCALL
        * AML_MUTEX
        * AML_NAME
        * AML_NAMEDFIELD
        * AML_OPREGION
        * AML_POWERRES
        * AML_PROCESSOR
        * AML_SCOPE
        * AML_THERMALZONE
        */
   
       ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
           "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
           AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
   
       /* Decode the opcode */
   
       Arg = Op->Common.Value.Arg;
   
       switch (WalkState->OpInfo->Type)
       {
   
       case AML_TYPE_CREATE_FIELD:
           /*
            * Create the field object, but the field buffer and index must
            * be evaluated later during the execution phase
            */
           Status = AcpiDsCreateBufferField (Op, WalkState);
           if ACPI_FAILURE (Status)
           {
               ACPI_EXCEPTION ((AE_INFO, Status, "CreateBufferField failure"));
               goto Cleanup;
           }
           break;
   
        case AML_TYPE_NAMED_FIELD:
           /*
            * If we are executing a method, initialize the field
            */
           if (WalkState->MethodNode)
           {
               Status = AcpiDsInitFieldObjects (Op, WalkState);
           }
   
           switch (Op->Common.AmlOpcode)
           {
           case AML_INDEX_FIELD_OP:
   
               Status = AcpiDsCreateIndexField (
                   Op, (ACPI_HANDLE) Arg->Common.Node, WalkState);
               break;
   
           case AML_BANK_FIELD_OP:
   
               Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
               break;
   
           case AML_FIELD_OP:
   
               Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
               break;
   
           default:
   
               /* All NAMED_FIELD opcodes must be handled above */
               break;
           }
           break;
   
        case AML_TYPE_NAMED_SIMPLE:
   
           Status = AcpiDsCreateOperands (WalkState, Arg);
           if (ACPI_FAILURE (Status))
           {
               goto Cleanup;
           }
   
           switch (Op->Common.AmlOpcode)
           {
           case AML_PROCESSOR_OP:
   
               Status = AcpiExCreateProcessor (WalkState);
               break;
   
           case AML_POWER_RESOURCE_OP:
   
               Status = AcpiExCreatePowerResource (WalkState);
               break;
   
           case AML_MUTEX_OP:
   
               Status = AcpiExCreateMutex (WalkState);
               break;
   
           case AML_EVENT_OP:
   
               Status = AcpiExCreateEvent (WalkState);
               break;
   
           case AML_ALIAS_OP:
   
               Status = AcpiExCreateAlias (WalkState);
               break;
   
           default:
   
               /* Unknown opcode */
   
               Status = AE_OK;
               goto Cleanup;
           }
   
           /* Delete operands */
   
           for (i = 1; i < WalkState->NumOperands; i++)
           {
               AcpiUtRemoveReference (WalkState->Operands[i]);
               WalkState->Operands[i] = NULL;
           }
   
           break;
   
       case AML_TYPE_NAMED_COMPLEX:
   
           switch (Op->Common.AmlOpcode)
           {
           case AML_REGION_OP:
           case AML_DATA_REGION_OP:
   
               if (Op->Common.AmlOpcode == AML_REGION_OP)
               {
                   RegionSpace = (ACPI_ADR_SPACE_TYPE)
                       ((Op->Common.Value.Arg)->Common.Value.Integer);
               }
               else
               {
                   RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
               }
   
               /*
                * The OpRegion is not fully parsed at this time. The only valid
                * argument is the SpaceId. (We must save the address of the
                * AML of the address and length operands)
                *
                * If we have a valid region, initialize it. The namespace is
                * unlocked at this point.
                *
                * Need to unlock interpreter if it is locked (if we are running
                * a control method), in order to allow _REG methods to be run
                * during AcpiEvInitializeRegion.
                */
               if (WalkState->MethodNode)
               {
                   /*
                    * Executing a method: initialize the region and unlock
                    * the interpreter
                    */
                   Status = AcpiExCreateRegion (Op->Named.Data,
                       Op->Named.Length, RegionSpace, WalkState);
                   if (ACPI_FAILURE (Status))
                   {
                       return_ACPI_STATUS (Status);
                   }
               }
   
               Status = AcpiEvInitializeRegion (
                   AcpiNsGetAttachedObject (Node));
               break;
   
           case AML_NAME_OP:
   
               Status = AcpiDsCreateNode (WalkState, Node, Op);
               if (ACPI_FAILURE (Status))
               {
                   goto Cleanup;
               }
   
   #if !defined(ACPI_DB_APP) && defined(ACPI_EXEC_APP)
               /*
                * AcpiExec support for namespace initialization file (initialize
                * Name opcodes in this code.)
                */
               Namepath = AcpiNsGetExternalPathname (Node);
               Status = AeLookupInitFileEntry (Namepath, &ObjDesc);
               if (ACPI_SUCCESS (Status))
               {
                   /* Detach any existing object, attach new object */
   
                   if (Node->Object)
                   {
                       AcpiNsDetachObject (Node);
                   }
                   AcpiNsAttachObject (Node, ObjDesc, ObjDesc->Common.Type);
               }
               ACPI_FREE (Namepath);
               Status = AE_OK;
   #endif
               break;
   
           case 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);
                   }
               }
               break;
   
   
           default:
   
               /* All NAMED_COMPLEX opcodes must be handled above */
               break;
           }
           break;
   
       case AML_CLASS_INTERNAL:
   
           /* case AML_INT_NAMEPATH_OP: */
           break;
   
       case AML_CLASS_METHOD_CALL:
   
           ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
               "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
               WalkState, Op, Node));
   
           /*
            * Lookup the method name and save the Node
            */
           Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
               ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
               ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
               WalkState, &(NewNode));
           if (ACPI_SUCCESS (Status))
           {
               /*
                * Make sure that what we found is indeed a method
                * We didn't search for a method on purpose, to see if the name
                * would resolve
                */
               if (NewNode->Type != ACPI_TYPE_METHOD)
               {
                   Status = AE_AML_OPERAND_TYPE;
               }
   
               /* We could put the returned object (Node) on the object stack for
                * later, but for now, we will put it in the "op" object that the
                * parser uses, so we can get it again at the end of this scope
                */
               Op->Common.Node = NewNode;
           }
           else
           {
               ACPI_ERROR_NAMESPACE (WalkState->ScopeInfo,
                   Arg->Common.Value.String, Status);
           }
           break;
   
   
       default:
   
           break;
       }
   
   Cleanup:
   
       /* Remove the Node pushed at the very beginning */
   
       WalkState->Operands[0] = NULL;
       WalkState->NumOperands = 0;
       return_ACPI_STATUS (Status);
   }

Cache object: 41356868675b366acdc6b88af8a6366c