C++ AcpiUtDeleteObjectDesc函数代码示例

static ACPI_STATUS
AcpiDsCreateMethodMutex (
    ACPI_OPERAND_OBJECT     *MethodDesc)
{
    ACPI_OPERAND_OBJECT     *MutexDesc;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (DsCreateMethodMutex);


    /* Create the new mutex object */

    MutexDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX);
    if (!MutexDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Create the actual OS Mutex */

    Status = AcpiOsCreateMutex (&MutexDesc->Mutex.OsMutex);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtDeleteObjectDesc (MutexDesc);
        return_ACPI_STATUS (Status);
    }

    MutexDesc->Mutex.SyncLevel = MethodDesc->Method.SyncLevel;
    MethodDesc->Method.Mutex = MutexDesc;
    return_ACPI_STATUS (AE_OK);
}

//.........这里部分代码省略.........
        }

        /* Put the resulting object onto the current object stack */

        Status = AcpiDsObjStackPush (ObjDesc, WalkState);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
        ACPI_DEBUGGER_EXEC (AcpiDbDisplayArgumentObject (ObjDesc, WalkState));
    }
    else
    {
        /* Check for null name case */

        if ((Arg->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
            !(Arg->Common.Flags & ACPI_PARSEOP_IN_STACK))
        {
            /*
             * If the name is null, this means that this is an
             * optional result parameter that was not specified
             * in the original ASL. Create a Zero Constant for a
             * placeholder. (Store to a constant is a Noop.)
             */
            Opcode = AML_ZERO_OP;       /* Has no arguments! */

            ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
                "Null namepath: Arg=%p\n", Arg));
        }
        else
        {
            Opcode = Arg->Common.AmlOpcode;
        }

        /* Get the object type of the argument */

        OpInfo = AcpiPsGetOpcodeInfo (Opcode);
        if (OpInfo->ObjectType == ACPI_TYPE_INVALID)
        {
            return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
        }

        if ((OpInfo->Flags & AML_HAS_RETVAL) || (Arg->Common.Flags & ACPI_PARSEOP_IN_STACK))
        {
            ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
                "Argument previously created, already stacked\n"));

            ACPI_DEBUGGER_EXEC (AcpiDbDisplayArgumentObject (
                WalkState->Operands [WalkState->NumOperands - 1], WalkState));

            /*
             * Use value that was already previously returned
             * by the evaluation of this argument
             */
            Status = AcpiDsResultPop (&ObjDesc, WalkState);
            if (ACPI_FAILURE (Status))
            {
                /*
                 * Only error is underflow, and this indicates
                 * a missing or null operand!
                 */
                ACPI_EXCEPTION ((AE_INFO, Status,
                    "Missing or null operand"));
                return_ACPI_STATUS (Status);
            }
        }
        else
        {
            /* Create an ACPI_INTERNAL_OBJECT for the argument */

            ObjDesc = AcpiUtCreateInternalObject (OpInfo->ObjectType);
            if (!ObjDesc)
            {
                return_ACPI_STATUS (AE_NO_MEMORY);
            }

            /* Initialize the new object */

            Status = AcpiDsInitObjectFromOp (
                        WalkState, Arg, Opcode, &ObjDesc);
            if (ACPI_FAILURE (Status))
            {
                AcpiUtDeleteObjectDesc (ObjDesc);
                return_ACPI_STATUS (Status);
            }
        }

        /* Put the operand object on the object stack */

        Status = AcpiDsObjStackPush (ObjDesc, WalkState);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }

        ACPI_DEBUGGER_EXEC (AcpiDbDisplayArgumentObject (ObjDesc, WalkState));
    }

    return_ACPI_STATUS (AE_OK);
}

ACPI_STATUS
AcpiDsBuildInternalPackageObj (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  ElementCount,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_PARSE_OBJECT       *Arg;
    ACPI_PARSE_OBJECT       *Parent;
    ACPI_OPERAND_OBJECT     *ObjDesc = NULL;
    ACPI_STATUS             Status = AE_OK;
    UINT32                  i;
    UINT16                  Index;
    UINT16                  ReferenceCount;


    ACPI_FUNCTION_TRACE (DsBuildInternalPackageObj);


    /* Find the parent of a possibly nested package */

    Parent = Op->Common.Parent;
    while ((Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
           (Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))
    {
        Parent = Parent->Common.Parent;
    }

    /*
     * If we are evaluating a Named package object "Name (xxxx, Package)",
     * the package object already exists, otherwise it must be created.
     */
    ObjDesc = *ObjDescPtr;
    if (!ObjDesc)
    {
        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
        *ObjDescPtr = ObjDesc;
        if (!ObjDesc)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        ObjDesc->Package.Node = Parent->Common.Node;
    }

    /*
     * Allocate the element array (array of pointers to the individual
     * objects) based on the NumElements parameter. Add an extra pointer slot
     * so that the list is always null terminated.
     */
    ObjDesc->Package.Elements = ACPI_ALLOCATE_ZEROED (
        ((ACPI_SIZE) ElementCount + 1) * sizeof (void *));

    if (!ObjDesc->Package.Elements)
    {
        AcpiUtDeleteObjectDesc (ObjDesc);
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    ObjDesc->Package.Count = ElementCount;

    /*
     * Initialize the elements of the package, up to the NumElements count.
     * Package is automatically padded with uninitialized (NULL) elements
     * if NumElements is greater than the package list length. Likewise,
     * Package is truncated if NumElements is less than the list length.
     */
    Arg = Op->Common.Value.Arg;
    Arg = Arg->Common.Next;
    for (i = 0; Arg && (i < ElementCount); i++)
    {
        if (Arg->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
        {
            if (Arg->Common.Node->Type == ACPI_TYPE_METHOD)
            {
                /*
                 * A method reference "looks" to the parser to be a method
                 * invocation, so we special case it here
                 */
                Arg->Common.AmlOpcode = AML_INT_NAMEPATH_OP;
                Status = AcpiDsBuildInternalObject (WalkState, Arg,
                            &ObjDesc->Package.Elements[i]);
            }
            else
            {
                /* This package element is already built, just get it */

                ObjDesc->Package.Elements[i] =
                    ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Arg->Common.Node);
            }
        }
        else
        {
            Status = AcpiDsBuildInternalObject (WalkState, Arg,
                        &ObjDesc->Package.Elements[i]);
        }

        if (*ObjDescPtr)
        {
            /* Existing package, get existing reference count */
//.........这里部分代码省略.........

ACPI_STATUS
AcpiDsBuildInternalBufferObj (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  BufferLength,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_PARSE_OBJECT       *Arg;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_PARSE_OBJECT       *ByteList;
    UINT32                  ByteListLength = 0;


    ACPI_FUNCTION_TRACE (DsBuildInternalBufferObj);


    /*
     * If we are evaluating a Named buffer object "Name (xxxx, Buffer)".
     * The buffer object already exists (from the NS node), otherwise it must
     * be created.
     */
    ObjDesc = *ObjDescPtr;
    if (!ObjDesc)
    {
        /* Create a new buffer object */

        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
        *ObjDescPtr = ObjDesc;
        if (!ObjDesc)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }
    }

    /*
     * Second arg is the buffer data (optional) ByteList can be either
     * individual bytes or a string initializer. In either case, a
     * ByteList appears in the AML.
     */
    Arg = Op->Common.Value.Arg;         /* skip first arg */

    ByteList = Arg->Named.Next;
    if (ByteList)
    {
        if (ByteList->Common.AmlOpcode != AML_INT_BYTELIST_OP)
        {
            ACPI_ERROR ((AE_INFO,
                "Expecting bytelist, found AML opcode 0x%X in op %p",
                ByteList->Common.AmlOpcode, ByteList));

            AcpiUtRemoveReference (ObjDesc);
            return (AE_TYPE);
        }

        ByteListLength = (UINT32) ByteList->Common.Value.Integer;
    }

    /*
     * The buffer length (number of bytes) will be the larger of:
     * 1) The specified buffer length and
     * 2) The length of the initializer byte list
     */
    ObjDesc->Buffer.Length = BufferLength;
    if (ByteListLength > BufferLength)
    {
        ObjDesc->Buffer.Length = ByteListLength;
    }

    /* Allocate the buffer */

    if (ObjDesc->Buffer.Length == 0)
    {
        ObjDesc->Buffer.Pointer = NULL;
        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
            "Buffer defined with zero length in AML, creating\n"));
    }
    else
    {
        ObjDesc->Buffer.Pointer = ACPI_ALLOCATE_ZEROED (
                                        ObjDesc->Buffer.Length);
        if (!ObjDesc->Buffer.Pointer)
        {
            AcpiUtDeleteObjectDesc (ObjDesc);
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        /* Initialize buffer from the ByteList (if present) */

        if (ByteList)
        {
            ACPI_MEMCPY (ObjDesc->Buffer.Pointer, ByteList->Named.Data,
                         ByteListLength);
        }
    }

    ObjDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
    Op->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjDesc);
    return_ACPI_STATUS (AE_OK);
}

//.........这里部分代码省略.........
            (void) AcpiOsDeleteSemaphore (AcpiGbl_GlobalLockSemaphore);
            AcpiGbl_GlobalLockSemaphore = NULL;

            AcpiOsDeleteMutex (Object->Mutex.OsMutex);
            AcpiGbl_GlobalLockMutex = NULL;
        }
        else
        {
            AcpiExUnlinkMutex (Object);
            AcpiOsDeleteMutex (Object->Mutex.OsMutex);
        }
        break;

    case ACPI_TYPE_EVENT:

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "***** Event %p, OS Semaphore %p\n",
            Object, Object->Event.OsSemaphore));

        (void) AcpiOsDeleteSemaphore (Object->Event.OsSemaphore);
        Object->Event.OsSemaphore = NULL;
        break;

    case ACPI_TYPE_METHOD:

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "***** Method %p\n", Object));

        /* Delete the method mutex if it exists */

        if (Object->Method.Mutex)
        {
            AcpiOsDeleteMutex (Object->Method.Mutex->Mutex.OsMutex);
            AcpiUtDeleteObjectDesc (Object->Method.Mutex);
            Object->Method.Mutex = NULL;
        }
        break;

    case ACPI_TYPE_REGION:

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "***** Region %p\n", Object));

        /*
         * Update AddressRange list. However, only permanent regions
         * are installed in this list. (Not created within a method)
         */
        if (!(Object->Region.Node->Flags & ANOBJ_TEMPORARY))
        {
            AcpiUtRemoveAddressRange (Object->Region.SpaceId,
                Object->Region.Node);
        }

        SecondDesc = AcpiNsGetSecondaryObject (Object);
        if (SecondDesc)
        {
            /*
             * Free the RegionContext if and only if the handler is one of the
             * default handlers -- and therefore, we created the context object
             * locally, it was not created by an external caller.
             */
            HandlerDesc = Object->Region.Handler;
            if (HandlerDesc)
            {
                NextDesc = HandlerDesc->AddressSpace.RegionList;
                StartDesc = NextDesc;

ACPI_STATUS
AcpiDsBuildInternalPackageObj (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  ElementCount,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_PARSE_OBJECT       *Arg;
    ACPI_PARSE_OBJECT       *Parent;
    ACPI_OPERAND_OBJECT     *ObjDesc = NULL;
    ACPI_STATUS             Status = AE_OK;
    ACPI_NATIVE_UINT        i;


    ACPI_FUNCTION_TRACE (DsBuildInternalPackageObj);


    /* Find the parent of a possibly nested package */

    Parent = Op->Common.Parent;
    while ((Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
           (Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))
    {
        Parent = Parent->Common.Parent;
    }

    /*
     * If we are evaluating a Named package object "Name (xxxx, Package)",
     * the package object already exists, otherwise it must be created.
     */
    ObjDesc = *ObjDescPtr;
    if (!ObjDesc)
    {
        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
        *ObjDescPtr = ObjDesc;
        if (!ObjDesc)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        ObjDesc->Package.Node = Parent->Common.Node;
    }

    /*
     * Allocate the element array (array of pointers to the individual
     * objects) based on the NumElements parameter. Add an extra pointer slot
     * so that the list is always null terminated.
     */
    ObjDesc->Package.Elements = ACPI_ALLOCATE_ZEROED (
        ((ACPI_SIZE) ElementCount + 1) * sizeof (void *));

    if (!ObjDesc->Package.Elements)
    {
        AcpiUtDeleteObjectDesc (ObjDesc);
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    ObjDesc->Package.Count = ElementCount;

    /*
     * Initialize the elements of the package, up to the NumElements count.
     * Package is automatically padded with uninitialized (NULL) elements
     * if NumElements is greater than the package list length. Likewise,
     * Package is truncated if NumElements is less than the list length.
     */
    Arg = Op->Common.Value.Arg;
    Arg = Arg->Common.Next;
    for (i = 0; Arg && (i < ElementCount); i++)
    {
        if (Arg->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
        {
            /* This package element is already built, just get it */

            ObjDesc->Package.Elements[i] =
                ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Arg->Common.Node);
        }
        else
        {
            Status = AcpiDsBuildInternalObject (WalkState, Arg,
                        &ObjDesc->Package.Elements[i]);
        }
        Arg = Arg->Common.Next;
    }

    if (!Arg)
    {
        ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
            "Package List length larger than NumElements count (%X), truncated\n",
            ElementCount));
    }

    ObjDesc->Package.Flags |= AOPOBJ_DATA_VALID;
    Op->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjDesc);
    return_ACPI_STATUS (Status);
}

ACPI_OPERAND_OBJECT  *
AcpiUtCreateInternalObjectDbg (
    const char              *ModuleName,
    UINT32                  LineNumber,
    UINT32                  ComponentId,
    ACPI_OBJECT_TYPE        Type)
{
    ACPI_OPERAND_OBJECT     *Object;
    ACPI_OPERAND_OBJECT     *SecondObject;


    ACPI_FUNCTION_TRACE_STR (UtCreateInternalObjectDbg,
        AcpiUtGetTypeName (Type));


    /* Allocate the raw object descriptor */

    Object = AcpiUtAllocateObjectDescDbg (
        ModuleName, LineNumber, ComponentId);
    if (!Object)
    {
        return_PTR (NULL);
    }

    switch (Type)
    {
    case ACPI_TYPE_REGION:
    case ACPI_TYPE_BUFFER_FIELD:
    case ACPI_TYPE_LOCAL_BANK_FIELD:

        /* These types require a secondary object */

        SecondObject = AcpiUtAllocateObjectDescDbg (
            ModuleName, LineNumber, ComponentId);
        if (!SecondObject)
        {
            AcpiUtDeleteObjectDesc (Object);
            return_PTR (NULL);
        }

        SecondObject->Common.Type = ACPI_TYPE_LOCAL_EXTRA;
        SecondObject->Common.ReferenceCount = 1;

        /* Link the second object to the first */

        Object->Common.NextObject = SecondObject;
        break;

    default:

        /* All others have no secondary object */
        break;
    }

    /* Save the object type in the object descriptor */

    Object->Common.Type = (UINT8) Type;

    /* Init the reference count */

    Object->Common.ReferenceCount = 1;

    /* Any per-type initialization should go here */

    return_PTR (Object);
}

ACPI_STATUS
AcpiExPrepFieldValue (
    ACPI_CREATE_FIELD_INFO  *Info)
{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *SecondDesc = NULL;
    ACPI_STATUS             Status;
    UINT32                  AccessByteWidth;
    UINT32                  Type;


    ACPI_FUNCTION_TRACE (ExPrepFieldValue);


    /* Parameter validation */

    if (Info->FieldType != ACPI_TYPE_LOCAL_INDEX_FIELD)
    {
        if (!Info->RegionNode)
        {
            ACPI_ERROR ((AE_INFO, "Null RegionNode"));
            return_ACPI_STATUS (AE_AML_NO_OPERAND);
        }

        Type = AcpiNsGetType (Info->RegionNode);
        if (Type != ACPI_TYPE_REGION)
        {
            ACPI_ERROR ((AE_INFO, "Needed Region, found type 0x%X (%s)",
                Type, AcpiUtGetTypeName (Type)));

            return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
        }
    }

    /* Allocate a new field object */

    ObjDesc = AcpiUtCreateInternalObject (Info->FieldType);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Initialize areas of the object that are common to all fields */

    ObjDesc->CommonField.Node = Info->FieldNode;
    Status = AcpiExPrepCommonFieldObject (ObjDesc,
                Info->FieldFlags, Info->Attribute,
                Info->FieldBitPosition, Info->FieldBitLength);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtDeleteObjectDesc (ObjDesc);
        return_ACPI_STATUS (Status);
    }

    /* Initialize areas of the object that are specific to the field type */

    switch (Info->FieldType)
    {
    case ACPI_TYPE_LOCAL_REGION_FIELD:

        ObjDesc->Field.RegionObj = AcpiNsGetAttachedObject (Info->RegionNode);

        /* Fields specific to GenericSerialBus fields */

        ObjDesc->Field.AccessLength = Info->AccessLength;

        if (Info->ConnectionNode)
        {
            SecondDesc = Info->ConnectionNode->Object;
            if (!(SecondDesc->Common.Flags & AOPOBJ_DATA_VALID))
            {
                Status = AcpiDsGetBufferArguments (SecondDesc);
                if (ACPI_FAILURE (Status))
                {
                    AcpiUtDeleteObjectDesc (ObjDesc);
                    return_ACPI_STATUS (Status);
                }
            }

            ObjDesc->Field.ResourceBuffer = SecondDesc->Buffer.Pointer;
            ObjDesc->Field.ResourceLength = (UINT16) SecondDesc->Buffer.Length;
        }
        else if (Info->ResourceBuffer)
        {
            ObjDesc->Field.ResourceBuffer = Info->ResourceBuffer;
            ObjDesc->Field.ResourceLength = Info->ResourceLength;
        }

        /* Allow full data read from EC address space */

        if ((ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_EC) &&
            (ObjDesc->CommonField.BitLength > 8))
        {
            AccessByteWidth = ACPI_ROUND_BITS_UP_TO_BYTES (
                ObjDesc->CommonField.BitLength);

            /* Maximum byte width supported is 255 */

            if (AccessByteWidth < 256)
            {
//.........这里部分代码省略.........

//.........这里部分代码省略.........

            AcpiOsDeleteMutex (Object->Mutex.OsMutex);
            AcpiGbl_GlobalLockMutex = NULL;
        }
        else
        {
            AcpiExUnlinkMutex (Object);
            AcpiOsDeleteMutex (Object->Mutex.OsMutex);
        }
        break;


    case ACPI_TYPE_EVENT:

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
                           "***** Event %p, OS Semaphore %p\n",
                           Object, Object->Event.OsSemaphore));

        (void) AcpiOsDeleteSemaphore (Object->Event.OsSemaphore);
        Object->Event.OsSemaphore = NULL;
        break;


    case ACPI_TYPE_METHOD:

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
                           "***** Method %p\n", Object));

        /* Delete the method mutex if it exists */

        if (Object->Method.Mutex)
        {
            AcpiOsDeleteMutex (Object->Method.Mutex->Mutex.OsMutex);
            AcpiUtDeleteObjectDesc (Object->Method.Mutex);
            Object->Method.Mutex = NULL;
        }
        break;


    case ACPI_TYPE_REGION:

        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
                           "***** Region %p\n", Object));

        SecondDesc = AcpiNsGetSecondaryObject (Object);
        if (SecondDesc)
        {
            /*
             * Free the RegionContext if and only if the handler is one of the
             * default handlers -- and therefore, we created the context object
             * locally, it was not created by an external caller.
             */
            HandlerDesc = Object->Region.Handler;
            if (HandlerDesc)
            {
                if (HandlerDesc->AddressSpace.HandlerFlags &
                        ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
                {
                    /* Deactivate region and free region context */

                    if (HandlerDesc->AddressSpace.Setup)
                    {
                        (void) HandlerDesc->AddressSpace.Setup (Object,
                                                                ACPI_REGION_DEACTIVATE,
                                                                HandlerDesc->AddressSpace.Context,
                                                                &SecondDesc->Extra.RegionContext);

ACPI_STATUS
AcpiDsBuildInternalPackageObj (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  PackageLength,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_PARSE_OBJECT       *Arg;
    ACPI_PARSE_OBJECT       *Parent;
    ACPI_OPERAND_OBJECT     *ObjDesc = NULL;
    UINT32                  PackageListLength;
    ACPI_STATUS             Status = AE_OK;
    UINT32                  i;


    ACPI_FUNCTION_TRACE ("DsBuildInternalPackageObj");


    /* Find the parent of a possibly nested package */

    Parent = Op->Common.Parent;
    while ((Parent->Common.AmlOpcode == AML_PACKAGE_OP)     ||
           (Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))
    {
        Parent = Parent->Common.Parent;
    }

    ObjDesc = *ObjDescPtr;
    if (ObjDesc)
    {
        /*
         * We are evaluating a Named package object "Name (xxxx, Package)".
         * Get the existing package object from the NS node
         */
    }
    else
    {
        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
        *ObjDescPtr = ObjDesc;
        if (!ObjDesc)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        ObjDesc->Package.Node = Parent->Common.Node;
    }

    ObjDesc->Package.Count = PackageLength;

    /* Count the number of items in the package list */

    PackageListLength = 0;
    Arg = Op->Common.Value.Arg;
    Arg = Arg->Common.Next;
    while (Arg)
    {
        PackageListLength++;
        Arg = Arg->Common.Next;
    }

    /*
     * The package length (number of elements) will be the greater
     * of the specified length and the length of the initializer list
     */
    if (PackageListLength > PackageLength)
    {
        ObjDesc->Package.Count = PackageListLength;
    }

    /*
     * Allocate the pointer array (array of pointers to the
     * individual objects). Add an extra pointer slot so
     * that the list is always null terminated.
     */
    ObjDesc->Package.Elements = ACPI_MEM_CALLOCATE (
                ((ACPI_SIZE) ObjDesc->Package.Count + 1) * sizeof (void *));

    if (!ObjDesc->Package.Elements)
    {
        AcpiUtDeleteObjectDesc (ObjDesc);
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /*
     * Now init the elements of the package
     */
    i = 0;
    Arg = Op->Common.Value.Arg;
    Arg = Arg->Common.Next;
    while (Arg)
    {
        if (Arg->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
        {
            /* Object (package or buffer) is already built */

            ObjDesc->Package.Elements[i] = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Arg->Common.Node);
        }
        else
        {
            Status = AcpiDsBuildInternalObject (WalkState, Arg,
//.........这里部分代码省略.........