C++ AcpiNsGetExternalPathname函数代码示例

char *
MpGetConnectionInfo (
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  PinIndex,
    ACPI_NAMESPACE_NODE     **TargetNode,
    char                    **TargetName)
{
    ACPI_PARSE_OBJECT       *NextOp;
    UINT32                  i;


    /*
     * Handle Connection() here. Find the next named FieldUnit.
     * Note: we look at the ParseOpcode for the compiler, look
     * at the AmlOpcode for the disassembler.
     */
    if ((Op->Asl.AmlOpcode == AML_INT_CONNECTION_OP) ||
        (Op->Asl.ParseOpcode == PARSEOP_CONNECTION))
    {
        /* Find the correct field unit definition */

        NextOp = Op;
        for (i = 0; i <= PinIndex;)
        {
            NextOp = NextOp->Asl.Next;
            while (NextOp &&
                (NextOp->Asl.ParseOpcode != PARSEOP_NAMESEG) &&
                (NextOp->Asl.AmlOpcode != AML_INT_NAMEDFIELD_OP))
            {
                NextOp = NextOp->Asl.Next;
            }

            if (!NextOp)
            {
                return ("UNKNOWN");
            }

            /* Add length of this field to the current pin index */

            if (NextOp->Asl.ParseOpcode == PARSEOP_NAMESEG)
            {
                i += (UINT32) NextOp->Asl.Child->Asl.Value.Integer;
            }
            else /* AML_INT_NAMEDFIELD_OP */
            {
                i += (UINT32) NextOp->Asl.Value.Integer;
            }
        }

        /* Return the node and pathname for the field unit */

        *TargetNode = NextOp->Asl.Node;
        *TargetName = AcpiNsGetExternalPathname (*TargetNode);
        return ("-Field-");
    }

    return (NULL);
}

static ACPI_STATUS
AcpiDbWalkForPredefinedNames (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE         *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
    UINT32                      *Count = (UINT32 *) Context;
    const ACPI_PREDEFINED_INFO  *Predefined;
    const ACPI_PREDEFINED_INFO  *Package = NULL;
    char                        *Pathname;
    char                        StringBuffer[48];


    Predefined = AcpiUtMatchPredefinedMethod (Node->Name.Ascii);
    if (!Predefined)
    {
        return (AE_OK);
    }

    Pathname = AcpiNsGetExternalPathname (Node);
    if (!Pathname)
    {
        return (AE_OK);
    }

    /* If method returns a package, the info is in the next table entry */

    if (Predefined->Info.ExpectedBtypes & ACPI_RTYPE_PACKAGE)
    {
        Package = Predefined + 1;
    }

    AcpiUtGetExpectedReturnTypes (StringBuffer,
        Predefined->Info.ExpectedBtypes);

    AcpiOsPrintf ("%-32s Arguments %X, Return Types: %s", Pathname,
        METHOD_GET_ARG_COUNT (Predefined->Info.ArgumentList),
        StringBuffer);

    if (Package)
    {
        AcpiOsPrintf (" (PkgType %2.2X, ObjType %2.2X, Count %2.2X)",
            Package->RetInfo.Type, Package->RetInfo.ObjectType1,
            Package->RetInfo.Count1);
    }

    AcpiOsPrintf("\n");

    /* Check that the declared argument count matches the ACPI spec */

    AcpiNsCheckAcpiCompliance (Pathname, Node, Predefined);

    ACPI_FREE (Pathname);
    (*Count)++;
    return (AE_OK);
}

static ACPI_STATUS
AcpiDbWalkForPredefinedNames (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE         *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
    UINT32                      *Count = (UINT32 *) Context;
    const ACPI_PREDEFINED_INFO  *Predefined;
    const ACPI_PREDEFINED_INFO  *Package = NULL;
    char                        *Pathname;


    Predefined = AcpiNsCheckForPredefinedName (Node);
    if (!Predefined)
    {
        return (AE_OK);
    }

    Pathname = AcpiNsGetExternalPathname (Node);
    if (!Pathname)
    {
        return (AE_OK);
    }

    /* If method returns a package, the info is in the next table entry */

    if (Predefined->Info.ExpectedBtypes & ACPI_BTYPE_PACKAGE)
    {
        Package = Predefined + 1;
    }

    AcpiOsPrintf ("%-32s arg %X ret %2.2X", Pathname,
        Predefined->Info.ParamCount, Predefined->Info.ExpectedBtypes);

    if (Package)
    {
        AcpiOsPrintf (" PkgType %2.2X ObjType %2.2X Count %2.2X",
            Package->RetInfo.Type, Package->RetInfo.ObjectType1,
            Package->RetInfo.Count1);
    }

    AcpiOsPrintf("\n");

    AcpiNsCheckParameterCount (Pathname, Node, ACPI_UINT32_MAX, Predefined);
    ACPI_FREE (Pathname);
    (*Count)++;

    return (AE_OK);
}

static ACPI_STATUS
AcpiDbDisplayNonRootHandlers (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE     *Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *HandlerObj;
    char                    *Pathname;


    ObjDesc = AcpiNsGetAttachedObject (Node);
    if (!ObjDesc)
    {
        return (AE_OK);
    }

    Pathname = AcpiNsGetExternalPathname (Node);
    if (!Pathname)
    {
        return (AE_OK);
    }

    /* Display all handlers associated with this device */

    HandlerObj = ObjDesc->Device.Handler;
    while (HandlerObj)
    {
        AcpiOsPrintf (ACPI_PREDEFINED_PREFIX,
            AcpiUtGetRegionName ((UINT8) HandlerObj->AddressSpace.SpaceId),
            HandlerObj->AddressSpace.SpaceId);

        AcpiOsPrintf (ACPI_HANDLER_PRESENT_STRING2,
            (HandlerObj->AddressSpace.HandlerFlags &
                ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) ? "Default" : "User",
            HandlerObj->AddressSpace.Handler);

        AcpiOsPrintf (" Device Name: %s (%p)\n", Pathname, Node);

        HandlerObj = HandlerObj->AddressSpace.Next;
    }

    ACPI_FREE (Pathname);
    return (AE_OK);
}

static ACPI_STATUS
AcpiNsDumpOneObjectPath (
    ACPI_HANDLE             ObjHandle,
    UINT32                  Level,
    void                    *Context,
    void                    **ReturnValue)
{
    UINT32                  MaxLevel = *((UINT32 *) Context);
    char                    *Pathname;
    ACPI_NAMESPACE_NODE     *Node;
    int                     PathIndent;


    if (!ObjHandle)
    {
        return (AE_OK);
    }

    Node = AcpiNsValidateHandle (ObjHandle);
    if (!Node)
    {
        /* Ignore bad node during namespace walk */

        return (AE_OK);
    }

    Pathname = AcpiNsGetExternalPathname (Node);

    PathIndent = 1;
    if (Level <= MaxLevel)
    {
        PathIndent = MaxLevel - Level + 1;
    }

    AcpiOsPrintf ("%2d%*s%-12s%*s",
        Level, Level, " ", AcpiUtGetTypeName (Node->Type),
        PathIndent, " ");

    AcpiOsPrintf ("%s\n", &Pathname[1]);
    ACPI_FREE (Pathname);
    return (AE_OK);
}

static ACPI_STATUS
MpEmitOneDevice (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    char                    *DevicePathname;
    char                    *DdnString;
    char                    *HidString;
    const AH_DEVICE_ID      *HidInfo;


    /* Device pathname */

    DevicePathname = AcpiNsGetExternalPathname (
        ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle));

    FlPrintFile (ASL_FILE_MAP_OUTPUT, "%-32s", DevicePathname);

    /* _HID or _DDN */

    HidString = MpGetHidValue (
        ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle));
    FlPrintFile (ASL_FILE_MAP_OUTPUT, "%8s", HidString);

    HidInfo = AcpiAhMatchHardwareId (HidString);
    if (HidInfo)
    {
        FlPrintFile (ASL_FILE_MAP_OUTPUT, "    // %s",
            HidInfo->Description);
    }
    else if ((DdnString = MpGetDdnValue (DevicePathname)))
    {
        FlPrintFile (ASL_FILE_MAP_OUTPUT, "    // %s (_DDN)", DdnString);
    }

    FlPrintFile (ASL_FILE_MAP_OUTPUT, "\n");
    ACPI_FREE (DevicePathname);
    return (AE_OK);
}

char *
MpGetParentDeviceHid (
    ACPI_PARSE_OBJECT       *Op,
    ACPI_NAMESPACE_NODE     **TargetNode,
    char                    **ParentDeviceName)
{
    ACPI_NAMESPACE_NODE     *DeviceNode;


    /* Find parent Device() or Scope() Op */

    while (Op &&
        (Op->Asl.AmlOpcode != AML_DEVICE_OP) &&
        (Op->Asl.AmlOpcode != AML_SCOPE_OP))
    {
        Op = Op->Asl.Parent;
    }

    if (!Op)
    {
        FlPrintFile (ASL_FILE_MAP_OUTPUT, " No_Parent_Device ");
        goto ErrorExit;
    }

    /* Get the full pathname to the device and the _HID */

    DeviceNode = Op->Asl.Node;
    if (!DeviceNode)
    {
        FlPrintFile (ASL_FILE_MAP_OUTPUT, " No_Device_Node ");
        goto ErrorExit;
    }

    *ParentDeviceName = AcpiNsGetExternalPathname (DeviceNode);
    return (MpGetHidValue (DeviceNode));


ErrorExit:
    return ("-No HID-");
}

static char *
AcpiDmNormalizeParentPrefix (
    ACPI_PARSE_OBJECT       *Op,
    char                    *Path)
{
    ACPI_NAMESPACE_NODE     *Node;
    char                    *Fullpath;
    char                    *ParentPath;
    ACPI_SIZE               Length;
    UINT32                  Index = 0;


    if (!Op)
    {
        return (NULL);
    }

    /* Search upwards in the parse tree until we reach the next namespace node */

    Op = Op->Common.Parent;
    while (Op)
    {
        if (Op->Common.Node)
        {
            break;
        }

        Op = Op->Common.Parent;
    }

    if (!Op)
    {
        return (NULL);
    }

    /*
     * Find the actual parent node for the reference:
     * Remove all carat prefixes from the input path.
     * There may be multiple parent prefixes (For example, ^^^M000)
     */
    Node = Op->Common.Node;
    while (Node && (*Path == (UINT8) AML_PARENT_PREFIX))
    {
        Node = Node->Parent;
        Path++;
    }

    if (!Node)
    {
        return (NULL);
    }

    /* Get the full pathname for the parent node */

    ParentPath = AcpiNsGetExternalPathname (Node);
    if (!ParentPath)
    {
        return (NULL);
    }

    Length = (ACPI_STRLEN (ParentPath) + ACPI_STRLEN (Path) + 1);
    if (ParentPath[1])
    {
        /*
         * If ParentPath is not just a simple '\', increment the length
         * for the required dot separator (ParentPath.Path)
         */
        Length++;

        /* For External() statements, we do not want a leading '\' */

        if (*ParentPath == AML_ROOT_PREFIX)
        {
            Index = 1;
        }
    }

    Fullpath = ACPI_ALLOCATE_ZEROED (Length);
    if (!Fullpath)
    {
        goto Cleanup;
    }

    /*
     * Concatenate parent fullpath and path. For example,
     * parent fullpath "\_SB_", Path "^INIT", Fullpath "\_SB_.INIT"
     *
     * Copy the parent path
     */
    ACPI_STRCPY (Fullpath, &ParentPath[Index]);

    /*
     * Add dot separator
     * (don't need dot if parent fullpath is a single backslash)
     */
    if (ParentPath[1])
    {
        ACPI_STRCAT (Fullpath, ".");
    }

//.........这里部分代码省略.........

//.........这里部分代码省略.........

            LsWriteSourceLines (Op->Asl.LineNumber, Op->Asl.LogicalLineNumber,
                FileId);
            break;
        }

        switch (Op->Asl.AmlOpcode)
        {
        case AML_SCOPE_OP:
        case AML_ALIAS_OP:

            /* These opcodes do not declare a new object, ignore them */

            break;

        default:

            /* All other named object opcodes come here */

            switch (FileId)
            {
            case ASL_FILE_ASM_SOURCE_OUTPUT:
            case ASL_FILE_C_SOURCE_OUTPUT:
            case ASL_FILE_ASM_INCLUDE_OUTPUT:
            case ASL_FILE_C_INCLUDE_OUTPUT:
                /*
                 * For named objects, we will create a valid symbol so that the
                 * AML code can be referenced from C or ASM
                 */
                if (Op->Asl.ExternalName)
                {
                    /* Get the full pathname associated with this node */

                    Pathname = AcpiNsGetExternalPathname (Op->Asl.Node);
                    Length = strlen (Pathname);
                    if (Length >= 4)
                    {
                        /* Convert all dots in the path to underscores */

                        for (i = 0; i < Length; i++)
                        {
                            if (Pathname[i] == '.')
                            {
                                Pathname[i] = '_';
                            }
                        }

                        /* Create the appropriate symbol in the output file */

                        switch (FileId)
                        {
                        case ASL_FILE_ASM_SOURCE_OUTPUT:

                            FlPrintFile (FileId,
                                "%s_%s_%s  \\\n",
                                Gbl_TableSignature, Gbl_TableId, &Pathname[1]);
                            break;

                        case ASL_FILE_C_SOURCE_OUTPUT:

                            FlPrintFile (FileId,
                                "    unsigned char    %s_%s_%s [] =\n    {\n",
                                Gbl_TableSignature, Gbl_TableId, &Pathname[1]);
                            break;

                        case ASL_FILE_ASM_INCLUDE_OUTPUT:

static ACPI_STATUS
AcpiDbDeviceResources (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_NAMESPACE_NODE     *PrtNode = NULL;
    ACPI_NAMESPACE_NODE     *CrsNode = NULL;
    ACPI_NAMESPACE_NODE     *PrsNode = NULL;
    ACPI_NAMESPACE_NODE     *AeiNode = NULL;
    char                    *ParentPath;
    ACPI_BUFFER             ReturnObj;
    ACPI_STATUS             Status;


    Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, ObjHandle);
    ParentPath = AcpiNsGetExternalPathname (Node);
    if (!ParentPath)
    {
        return (AE_NO_MEMORY);
    }

    /* Get handles to the resource methods for this device */

    (void) AcpiGetHandle (Node, METHOD_NAME__PRT, ACPI_CAST_PTR (ACPI_HANDLE, &PrtNode));
    (void) AcpiGetHandle (Node, METHOD_NAME__CRS, ACPI_CAST_PTR (ACPI_HANDLE, &CrsNode));
    (void) AcpiGetHandle (Node, METHOD_NAME__PRS, ACPI_CAST_PTR (ACPI_HANDLE, &PrsNode));
    (void) AcpiGetHandle (Node, METHOD_NAME__AEI, ACPI_CAST_PTR (ACPI_HANDLE, &AeiNode));
    if (!PrtNode && !CrsNode && !PrsNode && !AeiNode)
    {
        goto Cleanup;   /* Nothing to do */
    }

    AcpiOsPrintf ("\nDevice: %s\n", ParentPath);

    /* Prepare for a return object of arbitrary size */

    ReturnObj.Pointer = AcpiGbl_DbBuffer;
    ReturnObj.Length  = ACPI_DEBUG_BUFFER_SIZE;


    /* _PRT */

    if (PrtNode)
    {
        AcpiOsPrintf ("Evaluating _PRT\n");

        Status = AcpiEvaluateObject (PrtNode, NULL, NULL, &ReturnObj);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not evaluate _PRT: %s\n",
                AcpiFormatException (Status));
            goto GetCrs;
        }

        ReturnObj.Pointer = AcpiGbl_DbBuffer;
        ReturnObj.Length  = ACPI_DEBUG_BUFFER_SIZE;

        Status = AcpiGetIrqRoutingTable (Node, &ReturnObj);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("GetIrqRoutingTable failed: %s\n",
                AcpiFormatException (Status));
            goto GetCrs;
        }

        AcpiRsDumpIrqList (ACPI_CAST_PTR (UINT8, AcpiGbl_DbBuffer));
    }


    /* _CRS */

GetCrs:
    if (CrsNode)
    {
        AcpiOsPrintf ("Evaluating _CRS\n");

        ReturnObj.Pointer = AcpiGbl_DbBuffer;
        ReturnObj.Length  = ACPI_DEBUG_BUFFER_SIZE;

        Status = AcpiEvaluateObject (CrsNode, NULL, NULL, &ReturnObj);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("Could not evaluate _CRS: %s\n",
                AcpiFormatException (Status));
            goto GetPrs;
        }

        /* This code is here to exercise the AcpiWalkResources interface */

        Status = AcpiWalkResources (Node, METHOD_NAME__CRS,
            AcpiDbResourceCallback, NULL);
        if (ACPI_FAILURE (Status))
        {
            AcpiOsPrintf ("AcpiWalkResources failed: %s\n",
                AcpiFormatException (Status));
            goto GetPrs;
        }
//.........这里部分代码省略.........

static ACPI_STATUS
AcpiDbWalkForExecute (
    ACPI_HANDLE             ObjHandle,
    UINT32                  NestingLevel,
    void                    *Context,
    void                    **ReturnValue)
{
    ACPI_NAMESPACE_NODE         *Node = (ACPI_NAMESPACE_NODE *) ObjHandle;
    ACPI_DB_EXECUTE_WALK        *Info = (ACPI_DB_EXECUTE_WALK *) Context;
    char                        *Pathname;
    const ACPI_PREDEFINED_INFO  *Predefined;
    ACPI_DEVICE_INFO            *ObjInfo;
    ACPI_OBJECT_LIST            ParamObjects;
    ACPI_OBJECT                 Params[ACPI_METHOD_NUM_ARGS];
    ACPI_OBJECT                 *ThisParam;
    ACPI_BUFFER                 ReturnObj;
    ACPI_STATUS                 Status;
    UINT16                      ArgTypeList;
    UINT8                       ArgCount;
    UINT8                       ArgType;
    UINT32                      i;


    /* The name must be a predefined ACPI name */

    Predefined = AcpiUtMatchPredefinedMethod (Node->Name.Ascii);
    if (!Predefined)
    {
        return (AE_OK);
    }

    if (Node->Type == ACPI_TYPE_LOCAL_SCOPE)
    {
        return (AE_OK);
    }

    Pathname = AcpiNsGetExternalPathname (Node);
    if (!Pathname)
    {
        return (AE_OK);
    }

    /* Get the object info for number of method parameters */

    Status = AcpiGetObjectInfo (ObjHandle, &ObjInfo);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    ParamObjects.Count = 0;
    ParamObjects.Pointer = NULL;

    if (ObjInfo->Type == ACPI_TYPE_METHOD)
    {
        /* Setup default parameters (with proper types) */

        ArgTypeList = Predefined->Info.ArgumentList;
        ArgCount = METHOD_GET_ARG_COUNT (ArgTypeList);

        /*
         * Setup the ACPI-required number of arguments, regardless of what
         * the actual method defines. If there is a difference, then the
         * method is wrong and a warning will be issued during execution.
         */
        ThisParam = Params;
        for (i = 0; i < ArgCount; i++)
        {
            ArgType = METHOD_GET_NEXT_TYPE (ArgTypeList);
            ThisParam->Type = ArgType;

            switch (ArgType)
            {
            case ACPI_TYPE_INTEGER:

                ThisParam->Integer.Value = 1;
                break;

            case ACPI_TYPE_STRING:

                ThisParam->String.Pointer = __UNCONST(
		    "This is the default argument string");
                ThisParam->String.Length = ACPI_STRLEN (ThisParam->String.Pointer);
                break;

            case ACPI_TYPE_BUFFER:

                ThisParam->Buffer.Pointer = (UINT8 *) Params; /* just a garbage buffer */
                ThisParam->Buffer.Length = 48;
                break;

             case ACPI_TYPE_PACKAGE:

                ThisParam->Package.Elements = NULL;
                ThisParam->Package.Count = 0;
                break;

           default:

                AcpiOsPrintf ("%s: Unsupported argument type: %u\n",
//.........这里部分代码省略.........

ACPI_STATUS
AcpiEvaluateObjectTyped (
    ACPI_HANDLE             Handle,
    ACPI_STRING             Pathname,
    ACPI_OBJECT_LIST        *ExternalParams,
    ACPI_BUFFER             *ReturnBuffer,
    ACPI_OBJECT_TYPE        ReturnType)
{
    ACPI_STATUS             Status;
    BOOLEAN                 FreeBufferOnError = FALSE;
    ACPI_HANDLE             TargetHandle;
    char                    *FullPathname;


    ACPI_FUNCTION_TRACE (AcpiEvaluateObjectTyped);


    /* Return buffer must be valid */

    if (!ReturnBuffer)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    if (ReturnBuffer->Length == ACPI_ALLOCATE_BUFFER)
    {
        FreeBufferOnError = TRUE;
    }

    /* Get a handle here, in order to build an error message if needed */

    TargetHandle = Handle;
    if (Pathname)
    {
        Status = AcpiGetHandle (Handle, Pathname, &TargetHandle);
        if (ACPI_FAILURE (Status))
        {
            return_ACPI_STATUS (Status);
        }
    }

    FullPathname = AcpiNsGetExternalPathname (TargetHandle);
    if (!FullPathname)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Evaluate the object */

    Status = AcpiEvaluateObject (TargetHandle, NULL, ExternalParams,
        ReturnBuffer);
    if (ACPI_FAILURE (Status))
    {
        goto Exit;
    }

    /* Type ANY means "don't care about return value type" */

    if (ReturnType == ACPI_TYPE_ANY)
    {
        goto Exit;
    }

    if (ReturnBuffer->Length == 0)
    {
        /* Error because caller specifically asked for a return value */

        ACPI_ERROR ((AE_INFO, "%s did not return any object",
            FullPathname));
        Status = AE_NULL_OBJECT;
        goto Exit;
    }

    /* Examine the object type returned from EvaluateObject */

    if (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type == ReturnType)
    {
        goto Exit;
    }

    /* Return object type does not match requested type */

    ACPI_ERROR ((AE_INFO,
        "Incorrect return type from %s - received [%s], requested [%s]",
        FullPathname,
        AcpiUtGetTypeName (((ACPI_OBJECT *) ReturnBuffer->Pointer)->Type),
        AcpiUtGetTypeName (ReturnType)));

    if (FreeBufferOnError)
    {
        /*
         * Free a buffer created via ACPI_ALLOCATE_BUFFER.
         * Note: We use AcpiOsFree here because AcpiOsAllocate was used
         * to allocate the buffer. This purposefully bypasses the
         * (optionally enabled) allocation tracking mechanism since we
         * only want to track internal allocations.
         */
        AcpiOsFree (ReturnBuffer->Pointer);
        ReturnBuffer->Pointer = NULL;
    }
//.........这里部分代码省略.........

void
AcpiDmAddNodeToExternalList (
    ACPI_NAMESPACE_NODE     *Node,
    UINT8                   Type,
    UINT32                  Value,
    UINT16                  Flags)
{
    char                    *ExternalPath;
    char                    *InternalPath;
    char                    *Temp;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (DmAddNodeToExternalList);


    if (!Node)
    {
        return_VOID;
    }

    /* Get the full external and internal pathnames to the node */

    ExternalPath = AcpiNsGetExternalPathname (Node);
    if (!ExternalPath)
    {
        return_VOID;
    }

    Status = AcpiNsInternalizeName (ExternalPath, &InternalPath);
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (ExternalPath);
        return_VOID;
    }

    /* Remove the root backslash */

    if ((*ExternalPath == AML_ROOT_PREFIX) && (ExternalPath[1]))
    {
        Temp = ACPI_ALLOCATE_ZEROED (strlen (ExternalPath) + 1);
        if (!Temp)
        {
            return_VOID;
        }

        strcpy (Temp, &ExternalPath[1]);
        ACPI_FREE (ExternalPath);
        ExternalPath = Temp;
    }

    /* Create the new External() declaration node */

    Status = AcpiDmCreateNewExternal (ExternalPath, InternalPath, Type,
        Value, (Flags | ACPI_EXT_INTERNAL_PATH_ALLOCATED));
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (ExternalPath);
        ACPI_FREE (InternalPath);
    }

    return_VOID;
}

ACPI_STATUS
AcpiNsCheckPredefinedNames (
    ACPI_NAMESPACE_NODE         *Node,
    UINT32                      UserParamCount,
    ACPI_STATUS                 ReturnStatus,
    ACPI_OPERAND_OBJECT         **ReturnObjectPtr)
{
    ACPI_OPERAND_OBJECT         *ReturnObject = *ReturnObjectPtr;
    ACPI_STATUS                 Status = AE_OK;
    const ACPI_PREDEFINED_INFO  *Predefined;
    char                        *Pathname;
    ACPI_PREDEFINED_DATA        *Data;


    /* Match the name for this method/object against the predefined list */

    Predefined = AcpiNsCheckForPredefinedName (Node);

    /* Get the full pathname to the object, for use in warning messages */

#ifdef ACPI_DEBUG_OUTPUT /* AB */
    Pathname = AcpiNsGetExternalPathname (Node);
#else
    Pathname = NULL;
#endif
    if (!Pathname)
    {
        return (AE_OK); /* Could not get pathname, ignore */
    }

    /*
     * Check that the parameter count for this method matches the ASL
     * definition. For predefined names, ensure that both the caller and
     * the method itself are in accordance with the ACPI specification.
     */
    AcpiNsCheckParameterCount (Pathname, Node, UserParamCount, Predefined);

    /* If not a predefined name, we cannot validate the return object */

    if (!Predefined)
    {
        goto Cleanup;
    }

    /*
     * If the method failed or did not actually return an object, we cannot
     * validate the return object
     */
    if ((ReturnStatus != AE_OK) && (ReturnStatus != AE_CTRL_RETURN_VALUE))
    {
        goto Cleanup;
    }

    /*
     * If there is no return value, check if we require a return value for
     * this predefined name. Either one return value is expected, or none,
     * for both methods and other objects.
     *
     * Exit now if there is no return object. Warning if one was expected.
     */
    if (!ReturnObject)
    {
        if ((Predefined->Info.ExpectedBtypes) &&
            (!(Predefined->Info.ExpectedBtypes & ACPI_RTYPE_NONE)))
        {
            ACPI_WARN_PREDEFINED ((AE_INFO, Pathname, ACPI_WARN_ALWAYS,
                "Missing expected return value"));

            Status = AE_AML_NO_RETURN_VALUE;
        }
        goto Cleanup;
    }

    /*
     * 1) We have a return value, but if one wasn't expected, just exit, this is
     * not a problem. For example, if the "Implicit Return" feature is
     * enabled, methods will always return a value.
     *
     * 2) If the return value can be of any type, then we cannot perform any
     * validation, exit.
     */
    if ((!Predefined->Info.ExpectedBtypes) ||
        (Predefined->Info.ExpectedBtypes == ACPI_RTYPE_ALL))
    {
        goto Cleanup;
    }

    /* Create the parameter data block for object validation */

    Data = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PREDEFINED_DATA));
    if (!Data)
    {
        goto Cleanup;
    }
    Data->Predefined = Predefined;
    Data->NodeFlags = Node->Flags;
    Data->Pathname = Pathname;

    /*
     * Check that the type of the return object is what is expected for
//.........这里部分代码省略.........

static ACPI_STATUS
MpNamespaceXrefBegin (
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  Level,
    void                    *Context)
{
    ACPI_GPIO_INFO          *Info = ACPI_CAST_PTR (ACPI_GPIO_INFO, Context);
    const ACPI_OPCODE_INFO  *OpInfo;
    char                    *DevicePathname;
    ACPI_PARSE_OBJECT       *ParentOp;
    char                    *HidString;


    ACPI_FUNCTION_TRACE_PTR (MpNamespaceXrefBegin, Op);

    /*
     * If this node is the actual declaration of a name
     * [such as the XXXX name in "Method (XXXX)"],
     * we are not interested in it here. We only care about names that
     * are references to other objects within the namespace and the
     * parent objects of name declarations
     */
    if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)
    {
        return (AE_OK);
    }

    /* We are only interested in opcodes that have an associated name */

    OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);

    if ((OpInfo->Flags & AML_NAMED) ||
        (OpInfo->Flags & AML_CREATE))
    {
        return (AE_OK);
    }

    if ((Op->Asl.ParseOpcode != PARSEOP_NAMESTRING) &&
        (Op->Asl.ParseOpcode != PARSEOP_NAMESEG)    &&
        (Op->Asl.ParseOpcode != PARSEOP_METHODCALL))
    {
        return (AE_OK);
    }

    if (!Op->Asl.Node)
    {
        return (AE_OK);
    }

    ParentOp = Op->Asl.Parent;
    if (ParentOp->Asl.ParseOpcode == PARSEOP_FIELD)
    {
        return (AE_OK);
    }

    if (Op->Asl.Node == Info->TargetNode)
    {
        while (ParentOp && (!ParentOp->Asl.Node))
        {
            ParentOp = ParentOp->Asl.Parent;
        }

        if (ParentOp)
        {
            DevicePathname = AcpiNsGetExternalPathname (
                ParentOp->Asl.Node);

            if (!Info->References)
            {
                FlPrintFile (ASL_FILE_MAP_OUTPUT, "  // References:");
            }

            HidString = MpGetHidViaNamestring (DevicePathname);

            FlPrintFile (ASL_FILE_MAP_OUTPUT, " %s [%s]",
                DevicePathname, HidString);

            Info->References++;

            ACPI_FREE (DevicePathname);
        }
    }

    return (AE_OK);
}