FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/utilities/utcopy.c

     /******************************************************************************
      *
      * Module Name: utcopy - Internal to external object translation utilities
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 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/acnamesp.h>
   
   
   #define _COMPONENT          ACPI_UTILITIES
           ACPI_MODULE_NAME    ("utcopy")
   
   /* Local prototypes */
   
   static ACPI_STATUS
   AcpiUtCopyIsimpleToEsimple (
       ACPI_OPERAND_OBJECT     *InternalObject,
       ACPI_OBJECT             *ExternalObject,
       UINT8                   *DataSpace,
       ACPI_SIZE               *BufferSpaceUsed);
   
   static ACPI_STATUS
   AcpiUtCopyIelementToIelement (
       UINT8                   ObjectType,
       ACPI_OPERAND_OBJECT     *SourceObject,
       ACPI_GENERIC_STATE      *State,
       void                    *Context);
   
   static ACPI_STATUS
   AcpiUtCopyIpackageToEpackage (
       ACPI_OPERAND_OBJECT     *InternalObject,
       UINT8                   *Buffer,
       ACPI_SIZE               *SpaceUsed);
   
   static ACPI_STATUS
   AcpiUtCopyEsimpleToIsimple(
       ACPI_OBJECT             *UserObj,
       ACPI_OPERAND_OBJECT     **ReturnObj);
   
   static ACPI_STATUS
   AcpiUtCopyEpackageToIpackage (
       ACPI_OBJECT             *ExternalObject,
       ACPI_OPERAND_OBJECT     **InternalObject);
   
   static ACPI_STATUS
   AcpiUtCopySimpleObject (
       ACPI_OPERAND_OBJECT     *SourceDesc,
       ACPI_OPERAND_OBJECT     *DestDesc);
   
   static ACPI_STATUS
   AcpiUtCopyIelementToEelement (
       UINT8                   ObjectType,
       ACPI_OPERAND_OBJECT     *SourceObject,
       ACPI_GENERIC_STATE      *State,
       void                    *Context);
   
   static ACPI_STATUS
   AcpiUtCopyIpackageToIpackage (
       ACPI_OPERAND_OBJECT     *SourceObj,
       ACPI_OPERAND_OBJECT     *DestObj,
       ACPI_WALK_STATE         *WalkState);
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyIsimpleToEsimple
    *
    * PARAMETERS:  InternalObject      - Source object to be copied
    *              ExternalObject      - Where to return the copied object
    *              DataSpace           - Where object data is returned (such as
    *                                    buffer and string data)
    *              BufferSpaceUsed     - Length of DataSpace that was used
    *
    * RETURN:      Status
    *
    * DESCRIPTION: This function is called to copy a simple internal object to
    *              an external object.
    *
    *              The DataSpace buffer is assumed to have sufficient space for
    *              the object.
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopyIsimpleToEsimple (
       ACPI_OPERAND_OBJECT     *InternalObject,
       ACPI_OBJECT             *ExternalObject,
       UINT8                   *DataSpace,
       ACPI_SIZE               *BufferSpaceUsed)
   {
       ACPI_STATUS             Status = AE_OK;
   
   
       ACPI_FUNCTION_TRACE (UtCopyIsimpleToEsimple);
   
   
       *BufferSpaceUsed = 0;
   
       /*
        * Check for NULL object case (could be an uninitialized
        * package element)
        */
       if (!InternalObject)
       {
           return_ACPI_STATUS (AE_OK);
       }
   
       /* Always clear the external object */
   
       memset (ExternalObject, 0, sizeof (ACPI_OBJECT));
   
       /*
        * In general, the external object will be the same type as
        * the internal object
        */
       ExternalObject->Type = InternalObject->Common.Type;
   
       /* However, only a limited number of external types are supported */
   
       switch (InternalObject->Common.Type)
       {
       case ACPI_TYPE_STRING:
   
           ExternalObject->String.Pointer = (char *) DataSpace;
           ExternalObject->String.Length  = InternalObject->String.Length;
           *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
               (ACPI_SIZE) InternalObject->String.Length + 1);
   
           memcpy ((void *) DataSpace,
               (void *) InternalObject->String.Pointer,
               (ACPI_SIZE) InternalObject->String.Length + 1);
           break;
   
       case ACPI_TYPE_BUFFER:
   
           ExternalObject->Buffer.Pointer = DataSpace;
           ExternalObject->Buffer.Length  = InternalObject->Buffer.Length;
           *BufferSpaceUsed = ACPI_ROUND_UP_TO_NATIVE_WORD (
               InternalObject->String.Length);
   
           memcpy ((void *) DataSpace,
               (void *) InternalObject->Buffer.Pointer,
               InternalObject->Buffer.Length);
           break;
   
       case ACPI_TYPE_INTEGER:
   
           ExternalObject->Integer.Value = InternalObject->Integer.Value;
           break;
   
       case ACPI_TYPE_LOCAL_REFERENCE:
   
           /* This is an object reference. */
   
           switch (InternalObject->Reference.Class)
           {
           case ACPI_REFCLASS_NAME:
               /*
                * For namepath, return the object handle ("reference")
                * We are referring to the namespace node
                */
               ExternalObject->Reference.Handle =
                   InternalObject->Reference.Node;
               ExternalObject->Reference.ActualType =
                   AcpiNsGetType (InternalObject->Reference.Node);
               break;
   
           default:
   
               /* All other reference types are unsupported */
   
               return_ACPI_STATUS (AE_TYPE);
           }
           break;
   
       case ACPI_TYPE_PROCESSOR:
   
           ExternalObject->Processor.ProcId =
               InternalObject->Processor.ProcId;
           ExternalObject->Processor.PblkAddress =
               InternalObject->Processor.Address;
           ExternalObject->Processor.PblkLength =
               InternalObject->Processor.Length;
           break;
   
       case ACPI_TYPE_POWER:
   
           ExternalObject->PowerResource.SystemLevel =
               InternalObject->PowerResource.SystemLevel;
   
           ExternalObject->PowerResource.ResourceOrder =
               InternalObject->PowerResource.ResourceOrder;
           break;
   
       default:
           /*
            * There is no corresponding external object type
            */
           ACPI_ERROR ((AE_INFO,
               "Unsupported object type, cannot convert to external object: %s",
               AcpiUtGetTypeName (InternalObject->Common.Type)));
   
           return_ACPI_STATUS (AE_SUPPORT);
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyIelementToEelement
    *
    * PARAMETERS:  ACPI_PKG_CALLBACK
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Copy one package element to another package element
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopyIelementToEelement (
       UINT8                   ObjectType,
       ACPI_OPERAND_OBJECT     *SourceObject,
       ACPI_GENERIC_STATE      *State,
       void                    *Context)
   {
       ACPI_STATUS             Status = AE_OK;
       ACPI_PKG_INFO           *Info = (ACPI_PKG_INFO *) Context;
       ACPI_SIZE               ObjectSpace;
       UINT32                  ThisIndex;
       ACPI_OBJECT             *TargetObject;
   
   
       ACPI_FUNCTION_ENTRY ();
   
   
       ThisIndex = State->Pkg.Index;
       TargetObject = (ACPI_OBJECT *) &((ACPI_OBJECT *)
           (State->Pkg.DestObject))->Package.Elements[ThisIndex];
   
       switch (ObjectType)
       {
       case ACPI_COPY_TYPE_SIMPLE:
           /*
            * This is a simple or null object
            */
           Status = AcpiUtCopyIsimpleToEsimple (SourceObject,
               TargetObject, Info->FreeSpace, &ObjectSpace);
           if (ACPI_FAILURE (Status))
           {
               return (Status);
           }
           break;
   
       case ACPI_COPY_TYPE_PACKAGE:
           /*
            * Build the package object
            */
           TargetObject->Type = ACPI_TYPE_PACKAGE;
           TargetObject->Package.Count = SourceObject->Package.Count;
           TargetObject->Package.Elements =
               ACPI_CAST_PTR (ACPI_OBJECT, Info->FreeSpace);
   
           /*
            * Pass the new package object back to the package walk routine
            */
           State->Pkg.ThisTargetObj = TargetObject;
   
           /*
            * Save space for the array of objects (Package elements)
            * update the buffer length counter
            */
           ObjectSpace = ACPI_ROUND_UP_TO_NATIVE_WORD (
               (ACPI_SIZE) TargetObject->Package.Count *
               sizeof (ACPI_OBJECT));
           break;
   
       default:
   
           return (AE_BAD_PARAMETER);
       }
   
       Info->FreeSpace += ObjectSpace;
       Info->Length += ObjectSpace;
       return (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyIpackageToEpackage
    *
    * PARAMETERS:  InternalObject      - Pointer to the object we are returning
    *              Buffer              - Where the object is returned
    *              SpaceUsed           - Where the object length is returned
    *
    * RETURN:      Status
    *
    * DESCRIPTION: This function is called to place a package object in a user
    *              buffer. A package object by definition contains other objects.
    *
    *              The buffer is assumed to have sufficient space for the object.
    *              The caller must have verified the buffer length needed using
    *              the AcpiUtGetObjectSize function before calling this function.
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopyIpackageToEpackage (
       ACPI_OPERAND_OBJECT     *InternalObject,
       UINT8                   *Buffer,
       ACPI_SIZE               *SpaceUsed)
   {
       ACPI_OBJECT             *ExternalObject;
       ACPI_STATUS             Status;
       ACPI_PKG_INFO           Info;
   
   
       ACPI_FUNCTION_TRACE (UtCopyIpackageToEpackage);
   
   
       /*
        * First package at head of the buffer
        */
       ExternalObject = ACPI_CAST_PTR (ACPI_OBJECT, Buffer);
   
       /*
        * Free space begins right after the first package
        */
       Info.Length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
       Info.FreeSpace = Buffer +
           ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
       Info.ObjectSpace = 0;
       Info.NumPackages = 1;
   
       ExternalObject->Type = InternalObject->Common.Type;
       ExternalObject->Package.Count = InternalObject->Package.Count;
       ExternalObject->Package.Elements =
           ACPI_CAST_PTR (ACPI_OBJECT, Info.FreeSpace);
   
       /*
        * Leave room for an array of ACPI_OBJECTS in the buffer
        * and move the free space past it
        */
       Info.Length += (ACPI_SIZE) ExternalObject->Package.Count *
           ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
       Info.FreeSpace += ExternalObject->Package.Count *
           ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT));
   
       Status = AcpiUtWalkPackageTree (InternalObject, ExternalObject,
           AcpiUtCopyIelementToEelement, &Info);
   
       *SpaceUsed = Info.Length;
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyIobjectToEobject
    *
    * PARAMETERS:  InternalObject      - The internal object to be converted
    *              RetBuffer           - Where the object is returned
    *
    * RETURN:      Status
    *
    * DESCRIPTION: This function is called to build an API object to be returned
    *              to the caller.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiUtCopyIobjectToEobject (
       ACPI_OPERAND_OBJECT     *InternalObject,
       ACPI_BUFFER             *RetBuffer)
   {
       ACPI_STATUS             Status;
   
   
       ACPI_FUNCTION_TRACE (UtCopyIobjectToEobject);
   
   
       if (InternalObject->Common.Type == ACPI_TYPE_PACKAGE)
       {
           /*
            * Package object:  Copy all subobjects (including
            * nested packages)
            */
           Status = AcpiUtCopyIpackageToEpackage (InternalObject,
               RetBuffer->Pointer, &RetBuffer->Length);
       }
       else
       {
           /*
            * Build a simple object (no nested objects)
            */
           Status = AcpiUtCopyIsimpleToEsimple (InternalObject,
               ACPI_CAST_PTR (ACPI_OBJECT, RetBuffer->Pointer),
               ACPI_ADD_PTR (UINT8, RetBuffer->Pointer,
                   ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (ACPI_OBJECT))),
               &RetBuffer->Length);
           /*
            * build simple does not include the object size in the length
            * so we add it in here
            */
           RetBuffer->Length += sizeof (ACPI_OBJECT);
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyEsimpleToIsimple
    *
    * PARAMETERS:  ExternalObject      - The external object to be converted
    *              RetInternalObject   - Where the internal object is returned
    *
    * RETURN:      Status
    *
    * DESCRIPTION: This function copies an external object to an internal one.
    *              NOTE: Pointers can be copied, we don't need to copy data.
    *              (The pointers have to be valid in our address space no matter
    *              what we do with them!)
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopyEsimpleToIsimple (
       ACPI_OBJECT             *ExternalObject,
       ACPI_OPERAND_OBJECT     **RetInternalObject)
   {
       ACPI_OPERAND_OBJECT     *InternalObject;
   
   
       ACPI_FUNCTION_TRACE (UtCopyEsimpleToIsimple);
   
   
       /*
        * Simple types supported are: String, Buffer, Integer
        */
       switch (ExternalObject->Type)
       {
       case ACPI_TYPE_STRING:
       case ACPI_TYPE_BUFFER:
       case ACPI_TYPE_INTEGER:
       case ACPI_TYPE_LOCAL_REFERENCE:
   
           InternalObject = AcpiUtCreateInternalObject (
               (UINT8) ExternalObject->Type);
           if (!InternalObject)
           {
               return_ACPI_STATUS (AE_NO_MEMORY);
           }
           break;
   
       case ACPI_TYPE_ANY: /* This is the case for a NULL object */
   
           *RetInternalObject = NULL;
           return_ACPI_STATUS (AE_OK);
   
       default:
   
           /* All other types are not supported */
   
           ACPI_ERROR ((AE_INFO,
               "Unsupported object type, cannot convert to internal object: %s",
               AcpiUtGetTypeName (ExternalObject->Type)));
   
           return_ACPI_STATUS (AE_SUPPORT);
       }
   
   
       /* Must COPY string and buffer contents */
   
       switch (ExternalObject->Type)
       {
       case ACPI_TYPE_STRING:
   
           InternalObject->String.Pointer =
               ACPI_ALLOCATE_ZEROED ((ACPI_SIZE)
                   ExternalObject->String.Length + 1);
   
           if (!InternalObject->String.Pointer)
           {
               goto ErrorExit;
           }
   
           memcpy (InternalObject->String.Pointer,
               ExternalObject->String.Pointer,
               ExternalObject->String.Length);
   
           InternalObject->String.Length = ExternalObject->String.Length;
           break;
   
       case ACPI_TYPE_BUFFER:
   
           InternalObject->Buffer.Pointer =
               ACPI_ALLOCATE_ZEROED (ExternalObject->Buffer.Length);
           if (!InternalObject->Buffer.Pointer)
           {
               goto ErrorExit;
           }
   
           memcpy (InternalObject->Buffer.Pointer,
               ExternalObject->Buffer.Pointer,
               ExternalObject->Buffer.Length);
   
           InternalObject->Buffer.Length = ExternalObject->Buffer.Length;
   
           /* Mark buffer data valid */
   
           InternalObject->Buffer.Flags |= AOPOBJ_DATA_VALID;
           break;
   
       case ACPI_TYPE_INTEGER:
   
           InternalObject->Integer.Value = ExternalObject->Integer.Value;
           break;
   
       case ACPI_TYPE_LOCAL_REFERENCE:
   
           /* An incoming reference is defined to be a namespace node */
   
           InternalObject->Reference.Class = ACPI_REFCLASS_REFOF;
           InternalObject->Reference.Object = ExternalObject->Reference.Handle;
           break;
   
       default:
   
           /* Other types can't get here */
   
           break;
       }
   
       *RetInternalObject = InternalObject;
       return_ACPI_STATUS (AE_OK);
   
   
   ErrorExit:
       AcpiUtRemoveReference (InternalObject);
       return_ACPI_STATUS (AE_NO_MEMORY);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyEpackageToIpackage
    *
    * PARAMETERS:  ExternalObject      - The external object to be converted
    *              InternalObject      - Where the internal object is returned
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Copy an external package object to an internal package.
    *              Handles nested packages.
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopyEpackageToIpackage (
       ACPI_OBJECT             *ExternalObject,
       ACPI_OPERAND_OBJECT     **InternalObject)
   {
       ACPI_STATUS             Status = AE_OK;
       ACPI_OPERAND_OBJECT     *PackageObject;
       ACPI_OPERAND_OBJECT     **PackageElements;
       UINT32                  i;
   
   
       ACPI_FUNCTION_TRACE (UtCopyEpackageToIpackage);
   
   
       /* Create the package object */
   
       PackageObject = AcpiUtCreatePackageObject (
           ExternalObject->Package.Count);
       if (!PackageObject)
       {
           return_ACPI_STATUS (AE_NO_MEMORY);
       }
   
       PackageElements = PackageObject->Package.Elements;
   
       /*
        * Recursive implementation. Probably ok, since nested external
        * packages as parameters should be very rare.
        */
       for (i = 0; i < ExternalObject->Package.Count; i++)
       {
           Status = AcpiUtCopyEobjectToIobject (
               &ExternalObject->Package.Elements[i],
               &PackageElements[i]);
           if (ACPI_FAILURE (Status))
           {
               /* Truncate package and delete it */
   
               PackageObject->Package.Count = i;
               PackageElements[i] = NULL;
               AcpiUtRemoveReference (PackageObject);
               return_ACPI_STATUS (Status);
           }
       }
   
       /* Mark package data valid */
   
       PackageObject->Package.Flags |= AOPOBJ_DATA_VALID;
   
       *InternalObject = PackageObject;
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyEobjectToIobject
    *
    * PARAMETERS:  ExternalObject      - The external object to be converted
    *              InternalObject      - Where the internal object is returned
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Converts an external object to an internal object.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiUtCopyEobjectToIobject (
       ACPI_OBJECT             *ExternalObject,
       ACPI_OPERAND_OBJECT     **InternalObject)
   {
       ACPI_STATUS             Status;
   
   
       ACPI_FUNCTION_TRACE (UtCopyEobjectToIobject);
   
   
       if (ExternalObject->Type == ACPI_TYPE_PACKAGE)
       {
           Status = AcpiUtCopyEpackageToIpackage (
               ExternalObject, InternalObject);
       }
       else
       {
           /*
            * Build a simple object (no nested objects)
            */
           Status = AcpiUtCopyEsimpleToIsimple (ExternalObject,
               InternalObject);
       }
   
       return_ACPI_STATUS (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopySimpleObject
    *
    * PARAMETERS:  SourceDesc          - The internal object to be copied
    *              DestDesc            - New target object
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Simple copy of one internal object to another. Reference count
    *              of the destination object is preserved.
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopySimpleObject (
       ACPI_OPERAND_OBJECT     *SourceDesc,
       ACPI_OPERAND_OBJECT     *DestDesc)
   {
       UINT16                  ReferenceCount;
       ACPI_OPERAND_OBJECT     *NextObject;
       ACPI_STATUS             Status;
       ACPI_SIZE               CopySize;
   
   
       /* Save fields from destination that we don't want to overwrite */
   
       ReferenceCount = DestDesc->Common.ReferenceCount;
       NextObject = DestDesc->Common.NextObject;
   
       /*
        * Copy the entire source object over the destination object.
        * Note: Source can be either an operand object or namespace node.
        */
       CopySize = sizeof (ACPI_OPERAND_OBJECT);
       if (ACPI_GET_DESCRIPTOR_TYPE (SourceDesc) == ACPI_DESC_TYPE_NAMED)
       {
           CopySize = sizeof (ACPI_NAMESPACE_NODE);
       }
   
       memcpy (ACPI_CAST_PTR (char, DestDesc),
           ACPI_CAST_PTR (char, SourceDesc), CopySize);
   
       /* Restore the saved fields */
   
       DestDesc->Common.ReferenceCount = ReferenceCount;
       DestDesc->Common.NextObject = NextObject;
   
       /* New object is not static, regardless of source */
   
       DestDesc->Common.Flags &= ~AOPOBJ_STATIC_POINTER;
   
       /* Handle the objects with extra data */
   
       switch (DestDesc->Common.Type)
       {
       case ACPI_TYPE_BUFFER:
           /*
            * Allocate and copy the actual buffer if and only if:
            * 1) There is a valid buffer pointer
            * 2) The buffer has a length > 0
            */
           if ((SourceDesc->Buffer.Pointer) &&
               (SourceDesc->Buffer.Length))
           {
               DestDesc->Buffer.Pointer =
                   ACPI_ALLOCATE (SourceDesc->Buffer.Length);
               if (!DestDesc->Buffer.Pointer)
               {
                   return (AE_NO_MEMORY);
               }
   
               /* Copy the actual buffer data */
   
               memcpy (DestDesc->Buffer.Pointer,
                   SourceDesc->Buffer.Pointer, SourceDesc->Buffer.Length);
           }
           break;
   
       case ACPI_TYPE_STRING:
           /*
            * Allocate and copy the actual string if and only if:
            * 1) There is a valid string pointer
            * (Pointer to a NULL string is allowed)
            */
           if (SourceDesc->String.Pointer)
           {
               DestDesc->String.Pointer =
                   ACPI_ALLOCATE ((ACPI_SIZE) SourceDesc->String.Length + 1);
               if (!DestDesc->String.Pointer)
               {
                   return (AE_NO_MEMORY);
               }
   
               /* Copy the actual string data */
   
               memcpy (DestDesc->String.Pointer, SourceDesc->String.Pointer,
                   (ACPI_SIZE) SourceDesc->String.Length + 1);
           }
           break;
   
       case ACPI_TYPE_LOCAL_REFERENCE:
           /*
            * We copied the reference object, so we now must add a reference
            * to the object pointed to by the reference
            *
            * DDBHandle reference (from Load/LoadTable) is a special reference,
            * it does not have a Reference.Object, so does not need to
            * increase the reference count
            */
           if (SourceDesc->Reference.Class == ACPI_REFCLASS_TABLE)
           {
               break;
           }
   
           AcpiUtAddReference (SourceDesc->Reference.Object);
           break;
   
       case ACPI_TYPE_REGION:
           /*
            * We copied the Region Handler, so we now must add a reference
            */
           if (DestDesc->Region.Handler)
           {
               AcpiUtAddReference (DestDesc->Region.Handler);
           }
           break;
   
       /*
        * For Mutex and Event objects, we cannot simply copy the underlying
        * OS object. We must create a new one.
        */
       case ACPI_TYPE_MUTEX:
   
           Status = AcpiOsCreateMutex (&DestDesc->Mutex.OsMutex);
           if (ACPI_FAILURE (Status))
           {
               return (Status);
           }
           break;
   
       case ACPI_TYPE_EVENT:
   
           Status = AcpiOsCreateSemaphore (ACPI_NO_UNIT_LIMIT, 0,
               &DestDesc->Event.OsSemaphore);
           if (ACPI_FAILURE (Status))
           {
               return (Status);
           }
           break;
   
       default:
   
           /* Nothing to do for other simple objects */
   
           break;
       }
   
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiUtCopyIelementToIelement
    *
    * PARAMETERS:  ACPI_PKG_CALLBACK
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Copy one package element to another package element
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiUtCopyIelementToIelement (
       UINT8                   ObjectType,
       ACPI_OPERAND_OBJECT     *SourceObject,
       ACPI_GENERIC_STATE      *State,
       void                    *Context)
   {
       ACPI_STATUS             Status = AE_OK;
       UINT32                  ThisIndex;
       ACPI_OPERAND_OBJECT     **ThisTargetPtr;
       ACPI_OPERAND_OBJECT     *TargetObject;
   
   
       ACPI_FUNCTION_ENTRY ();
   
   
       ThisIndex = State->Pkg.Index;
       ThisTargetPtr = (ACPI_OPERAND_OBJECT **)
           &State->Pkg.DestObject->Package.Elements[ThisIndex];
   
      switch (ObjectType)
      {
      case ACPI_COPY_TYPE_SIMPLE:
  
          /* A null source object indicates a (legal) null package element */
  
          if (SourceObject)
          {
              /*
               * This is a simple object, just copy it
               */
              TargetObject = AcpiUtCreateInternalObject (
                  SourceObject->Common.Type);
              if (!TargetObject)
              {
                  return (AE_NO_MEMORY);
              }
  
              Status = AcpiUtCopySimpleObject (SourceObject, TargetObject);
              if (ACPI_FAILURE (Status))
              {
                  goto ErrorExit;
              }
  
              *ThisTargetPtr = TargetObject;
          }
          else
          {
              /* Pass through a null element */
  
              *ThisTargetPtr = NULL;
          }
          break;
  
      case ACPI_COPY_TYPE_PACKAGE:
          /*
           * This object is a package - go down another nesting level
           * Create and build the package object
           */
          TargetObject = AcpiUtCreatePackageObject (
              SourceObject->Package.Count);
          if (!TargetObject)
          {
              return (AE_NO_MEMORY);
          }
  
          TargetObject->Common.Flags = SourceObject->Common.Flags;
  
          /* Pass the new package object back to the package walk routine */
  
          State->Pkg.ThisTargetObj = TargetObject;
  
          /* Store the object pointer in the parent package object */
  
          *ThisTargetPtr = TargetObject;
          break;
  
      default:
  
          return (AE_BAD_PARAMETER);
      }
  
      return (Status);
  
  ErrorExit:
      AcpiUtRemoveReference (TargetObject);
      return (Status);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    AcpiUtCopyIpackageToIpackage
   *
   * PARAMETERS:  SourceObj       - Pointer to the source package object
   *              DestObj         - Where the internal object is returned
   *              WalkState       - Current Walk state descriptor
   *
   * RETURN:      Status
   *
   * DESCRIPTION: This function is called to copy an internal package object
   *              into another internal package object.
   *
   ******************************************************************************/
  
  static ACPI_STATUS
  AcpiUtCopyIpackageToIpackage (
      ACPI_OPERAND_OBJECT     *SourceObj,
      ACPI_OPERAND_OBJECT     *DestObj,
      ACPI_WALK_STATE         *WalkState)
  {
      ACPI_STATUS             Status = AE_OK;
  
  
      ACPI_FUNCTION_TRACE (UtCopyIpackageToIpackage);
  
  
      DestObj->Common.Type = SourceObj->Common.Type;
      DestObj->Common.Flags = SourceObj->Common.Flags;
      DestObj->Package.Count = SourceObj->Package.Count;
  
      /*
       * Create the object array and walk the source package tree
       */
      DestObj->Package.Elements = ACPI_ALLOCATE_ZEROED (
          ((ACPI_SIZE) SourceObj->Package.Count + 1) *
          sizeof (void *));
      if (!DestObj->Package.Elements)
      {
          ACPI_ERROR ((AE_INFO, "Package allocation failure"));
          return_ACPI_STATUS (AE_NO_MEMORY);
      }
  
      /*
       * Copy the package element-by-element by walking the package "tree".
       * This handles nested packages of arbitrary depth.
       */
      Status = AcpiUtWalkPackageTree (SourceObj, DestObj,
          AcpiUtCopyIelementToIelement, WalkState);
      if (ACPI_FAILURE (Status))
      {
          /* On failure, delete the destination package object */
  
          AcpiUtRemoveReference (DestObj);
      }
  
      return_ACPI_STATUS (Status);
  }
  
  
  /*******************************************************************************
   *
   * FUNCTION:    AcpiUtCopyIobjectToIobject
   *
   * PARAMETERS:  SourceDesc          - The internal object to be copied
   *              DestDesc            - Where the copied object is returned
   *              WalkState           - Current walk state
   *
   * RETURN:      Status
   *
   * DESCRIPTION: Copy an internal object to a new internal object
   *
   ******************************************************************************/
  
  ACPI_STATUS
  AcpiUtCopyIobjectToIobject (
      ACPI_OPERAND_OBJECT     *SourceDesc,
      ACPI_OPERAND_OBJECT     **DestDesc,
      ACPI_WALK_STATE         *WalkState)
  {
      ACPI_STATUS             Status = AE_OK;
  
  
      ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject);
  
  
      /* Create the top level object */
  
      *DestDesc = AcpiUtCreateInternalObject (SourceDesc->Common.Type);
      if (!*DestDesc)
      {
          return_ACPI_STATUS (AE_NO_MEMORY);
      }
  
      /* Copy the object and possible subobjects */
  
      if (SourceDesc->Common.Type == ACPI_TYPE_PACKAGE)
      {
          Status = AcpiUtCopyIpackageToIpackage (
              SourceDesc, *DestDesc, WalkState);
      }
      else
      {
          Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc);
      }
  
      /* Delete the allocated object if copy failed */
  
      if (ACPI_FAILURE (Status))
      {
          AcpiUtRemoveReference (*DestDesc);
      }
  
      return_ACPI_STATUS (Status);
  }

Cache object: e55dea0d4637e6487d1e1276e2aa1a00