ocarina-backends-po_hi_c-deployment.adb 75 KB
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------------------------------------------------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--  O C A R I N A . B A C K E N D S . P O _ H I _ C . D E P L O Y M E N T   --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
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--          Copyright (C) 2008-2011, European Space Agency (ESA).           --
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--                                                                          --
-- Ocarina  is free software;  you  can  redistribute  it and/or  modify    --
-- it under terms of the GNU General Public License as published by the     --
-- Free Software Foundation; either version 2, or (at your option) any      --
-- later version. Ocarina is distributed  in  the  hope  that it will be    --
-- useful, but WITHOUT ANY WARRANTY;  without even the implied warranty of  --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General --
-- Public License for more details. You should have received  a copy of the --
-- GNU General Public License distributed with Ocarina; see file COPYING.   --
-- If not, write to the Free Software Foundation, 51 Franklin Street, Fifth --
-- Floor, Boston, MA 02111-1301, USA.                                       --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
-- this  unit  does not  by itself cause  the resulting  executable to be   --
-- covered  by the  GNU  General  Public  License. This exception does not  --
-- however invalidate  any other reasons why the executable file might be   --
-- covered by the GNU Public License.                                       --
--                                                                          --
--                 Ocarina is maintained by the Ocarina team                --
--                       (ocarina-users@listes.enst.fr)                     --
--                                                                          --
------------------------------------------------------------------------------

with Namet;
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with Utils; use Utils;
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with Ocarina.ME_AADL;
with Ocarina.ME_AADL.AADL_Instances.Nodes;
with Ocarina.ME_AADL.AADL_Instances.Nutils;
with Ocarina.ME_AADL.AADL_Instances.Entities;

with Ocarina.Backends.Utils;
with Ocarina.Backends.C_Values;
with Ocarina.Backends.C_Tree.Nutils;
with Ocarina.Backends.C_Tree.Nodes;
with Ocarina.Backends.C_Common.Mapping;
with Ocarina.Backends.PO_HI_C.Runtime;
with Ocarina.Backends.Properties;
with Ocarina.Backends.Messages;

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with Ocarina.Instances.Queries;

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package body Ocarina.Backends.PO_HI_C.Deployment is

   use Namet;
   use Ocarina.ME_AADL;
   use Ocarina.ME_AADL.AADL_Instances.Nodes;
   use Ocarina.ME_AADL.AADL_Instances.Entities;
   use Ocarina.Backends.Utils;
   use Ocarina.Backends.C_Values;
   use Ocarina.Backends.C_Tree.Nutils;
   use Ocarina.Backends.C_Common.Mapping;
   use Ocarina.Backends.PO_HI_C.Runtime;
   use Ocarina.Backends.Properties;
   use Ocarina.Backends.Messages;
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   use Ocarina.Instances.Queries;
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   package AAN renames Ocarina.ME_AADL.AADL_Instances.Nodes;
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   package AAU renames Ocarina.ME_AADL.AADL_Instances.Nutils;
   package CV renames Ocarina.Backends.C_Values;
   package CTN renames Ocarina.Backends.C_Tree.Nodes;
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   package CTU renames Ocarina.Backends.C_Tree.Nutils;
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   Entity_Array            : Node_Id;
   Devices_Array           : Node_Id;
   Devices_Nb_Buses_Array  : Node_Id;
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   Devices_Confvars        : Node_Id;
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   Devices_Buses_Array     : Node_Id;
   Port_To_Devices         : Node_Id;
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   function Is_Added (P : Node_Id; E : Node_Id) return Boolean;
   function Added_Internal_Name (P : Node_Id; E : Node_Id) return Name_Id;

   --------------
   -- Is_Added --
   --------------

   function Is_Added (P : Node_Id; E : Node_Id) return Boolean is
      I_Name : constant Name_Id := Added_Internal_Name (P, E);
   begin
      return Get_Name_Table_Byte (I_Name) = 1;
   end Is_Added;

   -------------------------
   -- Added_Internal_Name --
   -------------------------

   function Added_Internal_Name (P : Node_Id; E : Node_Id) return Name_Id is
   begin
      Set_Str_To_Name_Buffer ("%add%enumerator%");
      Add_Nat_To_Name_Buffer (Nat (P));
      Add_Char_To_Name_Buffer ('%');
      Add_Nat_To_Name_Buffer (Nat (E));

      return Name_Find;
   end Added_Internal_Name;

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   -----------------
   -- Header_File --
   -----------------

   package body Header_File is

      procedure Visit_Architecture_Instance (E : Node_Id);
      procedure Visit_Component_Instance (E : Node_Id);
      procedure Visit_System_Instance (E : Node_Id);
      procedure Visit_Process_Instance (E : Node_Id);
      procedure Visit_Thread_Instance (E : Node_Id);
      procedure Visit_Subprogram_Instance (E : Node_Id);
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      procedure Visit_Device_Instance (E : Node_Id);
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      procedure Visit_Bus_Instance (E : Node_Id);
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      procedure Set_Added (P : Node_Id; E : Node_Id);

      procedure Append_Existing
        (S : Node_Id;
         L : List_Id;
         Id : in out Unsigned_Long_Long;
         Is_Entity : Boolean := False);

      --  Append a node in a List. If the node was node already processed,
      --  it assigns a value (using the Id) argument to the node and bind
      --  it to the Backend Node of S. Is a value was already assigned, it
      --  simply uses it and append the it in the list.
      --  This function is used to warrant that all entities will have
      --  the same values on each node.

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      Node_Enumerator_List          : List_Id;
      Tasks_Enumerator_List         : List_Id;
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      Devices_Enumerator_List       : List_Id;
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      Buses_Enumerator_List         : List_Id;
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      Entity_Enumerator_List        : List_Id;
      Global_Port_List              : List_Id;
      Global_Port_Names             : Node_Id;
      Global_Port_Model_Names       : Node_Id;
      Local_Port_List               : List_Id;
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      Nb_Nodes                      : Unsigned_Long_Long;
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      Current_Process_Instance      : Node_Id := No_Node;
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      Global_Port_To_Entity     : Node_Id;
      Global_Port_To_Local      : Node_Id;
      Local_Port_Values         : Node_Id;

      Invalid_Local_Port_Added  : Boolean := False;
      Invalid_Global_Port_Added : Boolean := False;
      Invalid_Entity_Added      : Boolean := False;

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      Current_Device : Node_Id := No_Node;
      --  Current_Process : Node_Id := No_Node;

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      --  Point to the process currently visited. When we visit a process
      --  we look at all its ports and visit the called subprograms. So,
      --  we need to know if these subprograms are linked with the currrent
      --  process.

      Node_Identifier          : Unsigned_Long_Long := 0;
      Global_Port_Identifier   : Unsigned_Long_Long := 0;
      Local_Port_Identifier    : Unsigned_Long_Long := 0;
      Entity_Identifier        : Unsigned_Long_Long := 0;
      Task_Identifier          : Unsigned_Long_Long := 0;
      Nb_Protected             : Unsigned_Long_Long := 0;
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      Device_Id                : Unsigned_Long_Long := 0;
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      Bus_Id                   : Unsigned_Long_Long := 0;
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      Nb_Ports_In_Process      : Unsigned_Long_Long := 0;
      Nb_Ports_Total           : Unsigned_Long_Long := 0;
      Total_Ports_Node         : Node_Id := No_Node;
      Nb_Entities_Node         : Node_Id := No_Node;
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      Nb_Devices_Node          : Node_Id := No_Node;
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      Nb_Buses_Node            : Node_Id := No_Node;
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      --  The information from Simulink can come
      --  from both data and subprograms. So, to avoid
      --  conflict, we add relevant informations from
      --  the first component that have them. And for other
      --  components, we add nothing.

      ---------------------
      -- Append_Existing --
      ---------------------

      procedure Append_Existing
        (S         : Node_Id;
         L         : List_Id;
         Id        : in out Unsigned_Long_Long;
         Is_Entity : Boolean := False) is
         N         : Node_Id;
      begin
         if No (Backend_Node (Identifier (S))) or else
            (Present (Backend_Node (Identifier (S))) and then
            No (CTN.Enumerator_Node
                 (Backend_Node (Identifier (S))))) then

            N := Make_Expression
               (Make_Defining_Identifier
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                  (Map_C_Enumerator_Name
                     (S,
                     Custom_Parent => Current_Device,
                     Entity => Is_Entity)),
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               Op_Equal,
               Make_Literal
                  (CV.New_Int_Value (Id, 0, 10)));
            Bind_AADL_To_Enumerator (Identifier (S), N);
            Append_Node_To_List (N, L);
            Id := Id + 1;
         end if;
      end Append_Existing;

      ---------------
      -- Set_Added --
      ---------------

      procedure Set_Added (P : Node_Id; E : Node_Id) is
         I_Name : constant Name_Id := Added_Internal_Name (P, E);
      begin
         Set_Name_Table_Byte (I_Name, 1);
      end Set_Added;

      -----------
      -- Visit --
      -----------

      procedure Visit (E : Node_Id) is
      begin
         case Kind (E) is
            when K_Architecture_Instance =>
               Visit_Architecture_Instance (E);

            when K_Component_Instance =>
               Visit_Component_Instance (E);

            when others =>
               null;
         end case;
      end Visit;

      ---------------------------------
      -- Visit_Architecture_Instance --
      ---------------------------------

      procedure Visit_Architecture_Instance (E : Node_Id) is
      begin
         Visit (Root_System (E));
      end Visit_Architecture_Instance;

      ------------------------------
      -- Visit_Component_Instance --
      ------------------------------

      procedure Visit_Component_Instance (E : Node_Id) is
         Category : constant Component_Category
           := Get_Category_Of_Component (E);
      begin
         case Category is
            when CC_System =>
               Visit_System_Instance (E);

            when CC_Process =>
               Visit_Process_Instance (E);

            when CC_Thread =>
               Visit_Thread_Instance (E);

            when CC_Subprogram =>
               Visit_Subprogram_Instance (E);

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            when CC_Device =>
               Visit_Device_Instance (E);

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            when CC_Bus =>
               Visit_Bus_Instance (E);

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            when others =>
               null;
         end case;
      end Visit_Component_Instance;

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      ------------------------
      -- Visit_Bus_Instance --
      ------------------------

      procedure Visit_Bus_Instance (E : Node_Id) is
         N        : Node_Id;
      begin
         N := Make_Expression
           (Make_Defining_Identifier
            (Map_C_Enumerator_Name
             (E, Entity => False)),
            Op_Equal,
            (Make_Literal
          (CV.New_Int_Value (Bus_Id, 0, 10))));
         Append_Node_To_List
           (N, Buses_Enumerator_List);

         Bus_Id  := Bus_Id + 1;

         CTN.Set_Value
            (Nb_Buses_Node, New_Int_Value
             (Bus_Id, 1, 10));

      end Visit_Bus_Instance;

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      ---------------------------
      -- Visit_Device_Instance --
      ---------------------------

      procedure Visit_Device_Instance (E : Node_Id) is
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         N                    : Node_Id;
         U                    : Node_Id;
         P                    : Node_Id;
         Q                    : Node_Id;
         F                    : Node_Id;
         Conf_Str             : Name_Id := No_Name;
         Tmp_Name             : Name_Id;
         Nb_Connected_Buses   : Unsigned_Long_Long;
         Accessed_Buses       : constant Node_Id := Make_Array_Values;
         Accessed_Bus         : Node_Id;
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         Device_Implementation : Node_Id;
         Configuration_Data   : Node_Id;
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         The_System           : constant Node_Id := Parent_Component
                                 (Parent_Subcomponent (E));
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      begin
         Current_Device := E;

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         if Current_Process_Instance /= No_Node and then
            Get_Bound_Processor (E) =
            Get_Bound_Processor (Current_Process_Instance) then
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            if Backend_Node (Identifier (E)) /= No_Node and then
               CTN.Enumerator_Node
                  (Backend_Node (Identifier (E))) /= No_Node then
               return;
            end if;

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            Bind_AADL_To_Enumerator
               (Identifier (E),
                Make_Defining_Identifier
                  (Map_C_Enumerator_Name (E, Entity => False)));

            N := Make_Expression
              (Make_Defining_Identifier
               (Map_C_Enumerator_Name
                (E, Entity => False)),
               Op_Equal,
               (Make_Literal
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             (CV.New_Int_Value (Device_Id, 0, 10))));
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            Append_Node_To_List
              (N, Devices_Enumerator_List);

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            Device_Id  := Device_Id + 1;

            CTN.Set_Value
               (Nb_Devices_Node, New_Int_Value
                (Device_Id, 1, 10));

            if Get_Location (E) /= No_Name then
               Get_Name_String (Get_Location (E));
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               Conf_Str := Name_Find;
               if Get_Port_Number (E) /= Properties.No_Value then
                  Set_Str_To_Name_Buffer (":");
                  Add_Str_To_Name_Buffer
                     (Value_Id'Image (Get_Port_Number (E)));
                  Tmp_Name := Name_Find;
               end if;
               Get_Name_String (Conf_Str);
               Get_Name_String_And_Append (Tmp_Name);
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               Conf_Str := Name_Find;
            elsif Is_Defined_Property (E, "deployment::channel_address") then
               Set_Str_To_Name_Buffer
                  (Unsigned_Long_Long'Image
                     (Get_Integer_Property
                        (E, "deployment::channel_address")));
               Conf_Str := Name_Find;
               if Is_Defined_Property (E, "deployment::process_id") then
                  Set_Str_To_Name_Buffer
                  (Unsigned_Long_Long'Image
                   (Get_Integer_Property (E, "deployment::process_id")));
                  Tmp_Name := Name_Find;
                  Get_Name_String (Conf_Str);
                  Add_Str_To_Name_Buffer (":");
                  Get_Name_String_And_Append (Tmp_Name);
                  Conf_Str := Name_Find;
               end if;
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            elsif Is_Defined_Property (E, "deployment::configuration") and then
               Get_String_Property
                  (E, "deployment::configuration") /= No_Name then
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               Get_Name_String
                  (Get_String_Property
                     (E, "deployment::configuration"));
               Conf_Str := Name_Find;
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            end if;

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            --  Now, we look at the amount of buses connected to
            --  the device and which bus is connected to which
            --  device. As a result, the arrays
            --  __po_hi_devices_nb_accessed_bus and
            --  __po_hi_devices_accessed_bus will be created.

            Nb_Connected_Buses := 0;

            if not AAU.Is_Empty (Features (E)) then
               F := First_Node (Features (E));

               while Present (F) loop
                  if Kind (F) = K_Subcomponent_Access_Instance and then
                     AAU.Is_Bus (Corresponding_Instance (F)) and then
                     First_Node (Sources (F)) /= No_Node then

                     Accessed_Bus := Item (First_Node (Sources (F)));

                     Append_Node_To_List
                     (Make_Defining_Identifier
                      (Map_C_Enumerator_Name
                        (Corresponding_Instance (Accessed_Bus))),
                     CTN.Values (Accessed_Buses));

                     Nb_Connected_Buses := Nb_Connected_Buses + 1;
                  end if;
                  F := Next_Node (F);
               end loop;
            end if;

            --  If the device accesses at least one bus, we declare
            --  an array in ALL processed that detail the buses
            --  it accesses. Then, this array is contained
            --  in the global array __po_hi_devices_accessed_buses.
            --  For this reason, we are forced to process again
            --  all processes to add the new array to all processes.

            if not Is_Empty (CTN.Values (Accessed_Buses)) then
               Set_Deployment_Source;

               --  Here, we browse all the process components
               --  of the root system.
               Q := First_Node (Subcomponents (The_System));

               while Present (Q) loop
                  if AAU.Is_Process (Corresponding_Instance (Q)) then
                     U := CTN.Distributed_Application_Unit
                           (CTN.Naming_Node
                              (Backend_Node
                                 (Identifier
                                    (Corresponding_Instance (Q)))));
                     P := CTN.Entity (U);

                     Push_Entity (P);
                     Push_Entity (U);

                     Set_Deployment_Source;

                     --  Here, we build the array that details the buses
                     --  accessed by the device and add it to each
                     --  deployment.c file of ALL processes.

                     N := Make_Expression
                       (Left_Expr =>
                          Make_Variable_Declaration
                          (Defining_Identifier =>
                             Make_Array_Declaration
                             (Defining_Identifier =>
                                 Make_Defining_Identifier
                                    (Map_Devices_Buses_Array_Name (E)),
                              Array_Size =>
                                 Make_Literal
                                    (CV.New_Int_Value
                                       (Nb_Connected_Buses, 1, 10))),
                           Used_Type =>
                             RE (RE_Bus_Id)),
                        Operator => Op_Equal,
                        Right_Expr => Accessed_Buses);

                     Append_Node_To_List
                        (N,
                         CTN.Declarations (Current_File));
                     Pop_Entity;
                     Pop_Entity;
                     Set_Deployment_Header;
                  end if;
                  Q := Next_Node (Q);
               end loop;

               Set_Deployment_Header;

               --  Finally, here, we reference the array name that
               --  contains connected buses to the main array
               --  __po_hi_devices_accessed_buses.

               Append_Node_To_List
                  (Make_Defining_Identifier
                     (Map_Devices_Buses_Array_Name (E)),
                  CTN.Values (Devices_Buses_Array));
            else
               --  If no bus is connected, we just specify
               --  a null pointer, meaning that no bus is
               --  connected to this device.
               Append_Node_To_List
                  (Make_Defining_Identifier (CONST (C_Null),
                                                    C_Conversion => False),
                  CTN.Values (Devices_Buses_Array));
            end if;
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            Append_Node_To_List
               (Make_Literal
                   (CV.New_Int_Value (Nb_Connected_Buses, 1, 10)),
               CTN.Values (Devices_Nb_Buses_Array));
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            if Is_Defined_Property (E, "source_text") then
               Append_Node_To_List
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                  (Make_Type_Conversion
                     (Make_Pointer_Type
                        (RE (RE_Uint32_T)),
                     Make_Variable_Address
                        (Make_Defining_Identifier
                        (Map_Device_Confvar_Name (E)))),
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                  CTN.Values (Devices_Confvars));
               Set_Deployment_Source;

               Device_Implementation := Get_Implementation (Current_Device);

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               if Is_Defined_Property (Device_Implementation,
                                       "deployment::configuration_type") then
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                  Configuration_Data
                     := Get_Classifier_Property
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                        (Device_Implementation,
                        "deployment::configuration_type");
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                  if Configuration_Data /= No_Node and then
                     Is_Defined_Property
                        (Configuration_Data, "type_source_name") then
                        --  Here, we browse all the process components
                        --  of the root system to declare external
                        --  variable that contain the configuration
                        --  of the device.

                        Q := First_Node (Subcomponents (The_System));

                        while Present (Q) loop
                           if AAU.Is_Process (Corresponding_Instance (Q)) then
                              U := CTN.Distributed_Application_Unit
                                    (CTN.Naming_Node
                                       (Backend_Node
                                          (Identifier
                                             (Corresponding_Instance (Q)))));
                              P := CTN.Entity (U);

                              Push_Entity (P);
                              Push_Entity (U);

                              Set_Deployment_Source;

                              N := Make_Extern_Entity_Declaration
                                 (Make_Variable_Declaration
                                    (Defining_Identifier =>
                                       Make_Defining_Identifier
                                          (Map_Device_Confvar_Name (E)),
                                    Used_Type =>
                                       Make_Pointer_Type
                                          (Make_Defining_Identifier
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                                             (Map_ASN_Type
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                                             (Get_String_Property
                                                (Configuration_Data,
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                                                "type_source_name"))))));
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                              Append_Node_To_List
                                 (N, CTN.Declarations (Current_File));
                              declare
                                 ST : constant Name_Array
                                    := Get_Source_Text (Configuration_Data);
                                 Include_Name : Name_Id;
                              begin
                                 Set_Deployment_Header;

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                                 if ST'Length = 0 then
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                                    Display_Error
                                       ("Source_Text property of " &
                                        "configuration data" &
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                                        " must have at least one element " &
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                                        "(the header file).",
                                        Fatal => True);
                                 end if;

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                                 Include_Name := No_Name;
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                                 for Index in ST'Range loop
                                    Get_Name_String (ST (Index));
                                    if Name_Buffer (Name_Len - 1 .. Name_Len)
                                       = ".h" then
                                       Include_Name := Get_String_Name
                                          (Name_Buffer (1 .. Name_Len - 2));
                                    end if;
                                 end loop;

                                 if Include_Name = No_Name then
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                                    Display_Error
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                                       ("Cannot find header file " &
                                        "that implements the data type",
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                                        Fatal => True);
                                 end if;

                                 Add_Include
                                    (Make_Include_Clause
                                       (Make_Defining_Identifier
                                          (Include_Name)));
                              end;
                              Pop_Entity;
                              Pop_Entity;
                           end if;
                           Q := Next_Node (Q);
                        end loop;
                  end if;
               end if;
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               Append_Node_To_List
               (Make_Literal
                (CV.New_Pointed_Char_Value
                 (Get_String_Name ("noaddr"))),
               CTN.Values (Devices_Array));
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               Set_Deployment_Header;
            else
               Append_Node_To_List
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                  (Make_Literal
                     (CV.New_Int_Value (0, 0, 10)),
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                  CTN.Values (Devices_Confvars));
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               if Conf_Str /= No_Name then
                  Append_Node_To_List
                  (Make_Literal
                   (CV.New_Pointed_Char_Value (Conf_Str)),
                  CTN.Values (Devices_Array));
               else
                  Append_Node_To_List
                  (Make_Literal
                   (CV.New_Pointed_Char_Value
                    (Get_String_Name ("noaddr"))),
                  CTN.Values (Devices_Array));
               end if;
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            end if;
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         end if;
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         Current_Device := No_Node;
      end Visit_Device_Instance;

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      ----------------------------
      -- Visit_Process_Instance --
      ----------------------------

      procedure Visit_Process_Instance (E : Node_Id) is
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         U           : constant Node_Id
               := CTN.Distributed_Application_Unit
                  (CTN.Naming_Node (Backend_Node (Identifier (E))));
         P           : constant Node_Id := CTN.Entity (U);
         S           : constant Node_Id := Parent_Subcomponent (E);
         Root_Sys    : constant Node_Id
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           := Parent_Component (Parent_Subcomponent (E));
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         Driver_Name : Name_Id;
         Q           : Node_Id;
         N           : Node_Id;
         C           : Node_Id;
         F           : Node_Id;
         Data        : Node_Id;
         Src         : Node_Id;
         Dst         : Node_Id;
         Parent      : Node_Id;
         The_System  : constant Node_Id := Parent_Component
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           (Parent_Subcomponent (E));
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         Device_Implementation : Node_Id;
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      begin
         pragma Assert (AAU.Is_System (Root_Sys));

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         Nb_Nodes := 0;

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         Set_Added (E, E);

         Current_Process_Instance := E;

         Tasks_Enumerator_List      := New_List (CTN.K_Enumeration_Literals);
         Node_Enumerator_List       := New_List (CTN.K_Enumeration_Literals);

         Push_Entity (P);
         Push_Entity (U);
         Set_Deployment_Header;

         Node_Identifier       := 0;
         Task_Identifier       := 0;
         Nb_Protected          := 0;
         Nb_Ports_In_Process   := 0;

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         N := Make_Define_Statement
         (Defining_Identifier =>
          (RE (RE_My_Node)),
          Value => Make_Defining_Identifier
          (Map_C_Enumerator_Name (Parent_Subcomponent (E))));
         Append_Node_To_List
         (N, CTN.Declarations (Current_File));

         --  Visit all devices attached to the parent system that
         --  share the same processor as process E.

         if not AAU.Is_Empty (Subcomponents (The_System)) then
            C := First_Node (Subcomponents (The_System));
            while Present (C) loop
               if AAU.Is_Device (Corresponding_Instance (C))
               and then
                 Get_Bound_Processor (Corresponding_Instance (C))
                 = Get_Bound_Processor (E)
               then
                  --  Build the enumerator corresponding to the device
                  --  Note: we reuse the process name XXX

                  Visit_Device_Instance (Corresponding_Instance (C));
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                  Current_Device := Corresponding_Instance (C);

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                  Device_Implementation := Get_Implementation (Current_Device);
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                  if Device_Implementation /= No_Node then
                     if not AAU.Is_Empty
                        (AAN.Subcomponents (Device_Implementation)) then
                        N := First_Node (Subcomponents
                           (Device_Implementation));
                        while Present (N) loop
                           Visit_Component_Instance
                              (Corresponding_Instance (N));
                           N := Next_Node (N);
                        end loop;
                     end if;
                  end if;

                  Current_Device := No_Node;

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               end if;
               C := Next_Node (C);
            end loop;
         end if;
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         --  Visit all the subcomponents of the process

         if not AAU.Is_Empty (Subcomponents (E)) then
            C := First_Node (Subcomponents (E));

            while Present (C) loop
               if AAU.Is_Data (Corresponding_Instance (C)) then
                  N := Make_Literal
                    (New_Int_Value
                     (Nb_Protected, 1, 10));
                  Bind_AADL_To_Default_Value
                 (Identifier (C), N);

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                  Nb_Protected := Nb_Protected + 1;
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               else
                  --  Visit the component instance corresponding to the
                  --  subcomponent S.
                  Visit (Corresponding_Instance (C));
               end if;

               C := Next_Node (C);
            end loop;
         end if;

         --  For each of the processes P connected to E, (1) we add an
         --  enumerator corresponding to P and (2) for each one of the
         --  threads of P, we add an enumerator.

         if not AAU.Is_Empty (Features (E)) then
            F := First_Node (Features (E));

            while Present (F) loop
               --  The sources of F

               if not AAU.Is_Empty (Sources (F)) then
                  Src := First_Node (Sources (F));

                  while Present (Src) loop

                     Parent := Parent_Component (Item (Src));

                     if AAU.Is_Process (Parent)
                       and then Parent /= E
                     then
                        Set_Added (Parent, E);
                        --  Traverse all the subcomponents of Parent

                        if not AAU.Is_Empty (Subcomponents (Parent)) then
                           C := First_Node (Subcomponents (Parent));

                           while Present (C) loop
                              Visit (Corresponding_Instance (C));

                              C := Next_Node (C);
                           end loop;
                        end if;

                        --  Mark P as being Added
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                     elsif AAU.Is_Device (Parent)
                        and then Parent /= E then
                        Driver_Name := Get_Driver_Name (Parent);

                        if Driver_Name /= No_Name then
                           Set_Str_To_Name_Buffer ("__PO_HI_NEED_DRIVER_");
                           Get_Name_String_And_Append (Driver_Name);

                           Driver_Name := Name_Find;
                           Driver_Name := To_Upper (Driver_Name);

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                           Add_Define_Deployment
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                                    (Make_Defining_Identifier
                                       (Driver_Name,
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                                       C_Conversion => False));
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                        end if;
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                     end if;

                     Src := Next_Node (Src);
                  end loop;
               end if;

               --  The destinations of F

               if not AAU.Is_Empty (Destinations (F)) then
                  Dst := First_Node (Destinations (F));

                  while Present (Dst) loop
                     Parent := Parent_Component (Item (Dst));

                     if AAU.Is_Process (Parent)
                       and then Parent /= E
                     then
                        Set_Added (Parent, E);

                        if not AAU.Is_Empty (Subcomponents (Parent)) then
                           C := First_Node (Subcomponents (Parent));

                           while Present (C) loop
                              Visit (Corresponding_Instance (C));

                              C := Next_Node (C);
                           end loop;
                        end if;
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                     elsif AAU.Is_Device (Parent)
                        and then Parent /= E then
                        Driver_Name := Get_Driver_Name (Parent);

                        if Driver_Name /= No_Name then
                           Set_Str_To_Name_Buffer ("__PO_HI_NEED_DRIVER_");
                           Get_Name_String_And_Append (Driver_Name);

                           Driver_Name := Name_Find;
                           Driver_Name := To_Upper (Driver_Name);

                           Append_Node_To_List
                              (Make_Define_Statement
                                 (Defining_Identifier =>
                                    (Make_Defining_Identifier
                                       (Driver_Name,
                                       C_Conversion => False)),
                                 Value =>
                                    (Make_Literal
                                       (CV.New_Int_Value (1, 1, 10)))),
                              CTN.Declarations (Current_File));
                        end if;
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                     end if;

                     Dst := Next_Node (Dst);
                  end loop;
               end if;

               if Is_Data (F) then
                  if Get_Source_Language (Corresponding_Instance (F))
                     = Language_Simulink then
                     Data := Corresponding_Instance (F);

                     if Get_Source_Name (Data) /= No_Name then
                        N := Make_Define_Statement
                           (Defining_Identifier =>
                              (RE (RE_Simulink_Node)),
                           Value => Make_Defining_Identifier
                                    (Get_Source_Name (Data)));
                        Append_Node_To_List
                           (N, CTN.Declarations (Current_File));

                        N := Make_Define_Statement
                           (Defining_Identifier =>
                              (RE (RE_Simulink_Init_Func)),
                           Value => Map_Simulink_Init_Func (Data));
                        Append_Node_To_List
                           (N, CTN.Declarations (Current_File));

                        N := Make_Define_Statement
                           (Defining_Identifier =>
                              (RE (RE_Simulink_Model_Type)),
                           Value => Map_Simulink_Model_Type (Data));
                        Append_Node_To_List
                           (N, CTN.Declarations (Current_File));
                     end if;
                  end if;

               end if;

               F := Next_Node (F);
            end loop;
         end if;

         Q := First_Node (Subcomponents (Root_Sys));

         while Present (Q) loop
            if AAU.Is_Process (Corresponding_Instance (Q)) then
               if Is_Added (Corresponding_Instance (Q), E) then
                  N := Make_Expression
                     (Make_Defining_Identifier
                        (Map_C_Enumerator_Name (Q)),
                     Op_Equal,
                     Make_Literal
                        (CV.New_Int_Value
                           (Node_Identifier, 0, 10)));
                  Append_Node_To_List
                     (N, Node_Enumerator_List);
                  Node_Identifier := Node_Identifier + 1;
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                  Nb_Nodes := Nb_Nodes + 1;
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               else
                  N := Make_Expression
                     (Make_Defining_Identifier
                        (Map_C_Enumerator_Name (Q)),
                     Op_Equal,
                     RE (RE_Unused_Node));
                  Append_Node_To_List
                     (N, Node_Enumerator_List);
               end if;
            end if;

            Q := Next_Node (Q);
         end loop;

         --  Create the node enumeration type declaration. Note that
         --  the type creation is possible even the enumeration list
         --  is incomplete. We can do this in the first traversal
         --  since we are sure that the enumerator list is not empty.

         N := Message_Comment ("For each node in the distributed"
                               & " application add an enumerator");
         Append_Node_To_List (N, CTN.Declarations (Current_File));

         N := Make_Full_Type_Declaration
           (Defining_Identifier => RE (RE_Node_T),
            Type_Definition     => Make_Enum_Aggregate
              (Node_Enumerator_List));
         Append_Node_To_List (N, CTN.Declarations (Current_File));

         --  Create the thread enumeration type declaration. Note that
         --  the type creation is possible even the enumeration list
         --  is incomplete. This type may not be generated in case the
         --  application is local.

         if not Is_Empty (Entity_Enumerator_List) then
            N := Message_Comment ("For each thread in the distributed"
                                  & " application nodes, add an"
                                  & " enumerator");
            Append_Node_To_List (N, CTN.Declarations (Current_File));

            if not Invalid_Entity_Added then
               Set_Str_To_Name_Buffer ("invalid_entity");
               N := Make_Expression
                 (Make_Defining_Identifier
                  (Name_Find),
                  Op_Equal,
                  (Make_Literal
                (CV.New_Int_Value (1, -1, 10))));
               Append_Node_To_List
                  (N, Entity_Enumerator_List);
               Invalid_Entity_Added := True;
            end if;

            N := Make_Full_Type_Declaration
              (Defining_Identifier => RE (RE_Entity_T),
               Type_Definition     => Make_Enum_Aggregate
                 (Entity_Enumerator_List));
            Append_Node_To_List (N, CTN.Declarations (Current_File));
         end if;

         Set_Str_To_Name_Buffer ("invalid_task_id");
         N := Make_Expression
           (Make_Defining_Identifier
            (Name_Find),
            Op_Equal,
            (Make_Literal
          (CV.New_Int_Value (1, -1, 10))));
         Append_Node_To_List
            (N, Tasks_Enumerator_List);

         N := Make_Full_Type_Declaration
           (Defining_Identifier => RE (RE_Task_Id),
            Type_Definition     => Make_Enum_Aggregate
              (Tasks_Enumerator_List));
         Append_Node_To_List (N, CTN.Declarations (Current_File));

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