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diff --git a/src/translate/translation.ads b/src/translate/translation.ads
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+--  Iir to ortho translator.
+--  Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
+--
+--  GHDL is free software; you can redistribute it and/or modify it under
+--  the terms of the GNU General Public License as published by the Free
+--  Software Foundation; either version 2, or (at your option) any later
+--  version.
+--
+--  GHDL 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
+--  along with GCC; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+with Iirs; use Iirs;
+with Ortho_Nodes;
+
+package Translation is
+   --  Initialize the package: create internal nodes.
+   procedure Initialize;
+
+   --  Translate (generate code) for design unit UNIT.
+   --  If MAIN is true, the unit is really the unit being compiled (not an
+   --  external unit).  Code shouldn't be generated for external units.
+   procedure Translate (Unit : Iir_Design_Unit; Main : Boolean);
+
+   --  Translate std.standard.
+   procedure Translate_Standard (Main : Boolean);
+
+   --  Get the ortho node for subprogram declaration DECL.
+   function Get_Ortho_Decl (Subprg : Iir) return Ortho_Nodes.O_Dnode;
+
+   --  Get the internal _RESOLV function for FUNC.
+   function Get_Resolv_Ortho_Decl (Func : Iir) return Ortho_Nodes.O_Dnode;
+
+   procedure Finalize;
+
+   package Chap12 is
+      --  Primary unit + secondary unit (architecture name which may be null)
+      --  to elaborate.
+      procedure Elaborate (Primary : String;
+                           Secondary : String;
+                           Filelist : String;
+                           Whole : Boolean);
+   end Chap12;
+
+   --  If set, generate Run-Time Information nodes.
+   Flag_Rti : Boolean := True;
+
+   --  If set, do not generate 64 bits integer types and operations.
+   Flag_Only_32b : Boolean := False;
+
+   --  If set, do not generate code for unused subprograms.
+   --  Be careful: unless you are in whole compilation mode, this
+   --  flag shouldn't be set for packages and entities.
+   Flag_Discard_Unused : Boolean := False;
+
+   --  If set, do not generate code for unused implicit subprograms.
+   Flag_Discard_Unused_Implicit : Boolean := False;
+
+   --  If set, dump drivers per process during compilation.
+   Flag_Dump_Drivers : Boolean := False;
+
+   --  If set, try to create direct drivers.
+   Flag_Direct_Drivers : Boolean := True;
+
+   --  If set, checks ranges (subtype ranges).
+   Flag_Range_Checks : Boolean := True;
+
+   --  If set, checks indexes (arrays index and slice).
+   Flag_Index_Checks : Boolean := True;
+
+   --  If set, do not create identifiers (for in memory compilation).
+   Flag_Discard_Identifiers : Boolean := False;
+
+   --  If true, do not create nested subprograms.
+   --  This flag is forced during initialization if the code generated doesn't
+   --  support nested subprograms.
+   Flag_Unnest_Subprograms : Boolean := False;
+
+   type Foreign_Kind_Type is (Foreign_Unknown,
+                              Foreign_Vhpidirect,
+                              Foreign_Intrinsic);
+
+   type Foreign_Info_Type (Kind : Foreign_Kind_Type := Foreign_Unknown)
+   is record
+      case Kind is
+         when Foreign_Unknown =>
+            null;
+         when Foreign_Vhpidirect =>
+            --  Positions in name_table.name_buffer.
+            Lib_First : Natural;
+            Lib_Last : Natural;
+            Subprg_First : Natural;
+            Subprg_Last : Natural;
+         when Foreign_Intrinsic =>
+            null;
+      end case;
+   end record;
+
+   Foreign_Bad : constant Foreign_Info_Type := (Kind => Foreign_Unknown);
+
+   --  Return a foreign_info for DECL.
+   --  Can generate error messages, if the attribute expression is ill-formed.
+   --  If EXTRACT_NAME is set, internal fields of foreign_info are set.
+   --  Otherwise, only KIND discriminent is set.
+   --  EXTRACT_NAME should be set only inside translation itself, since the
+   --  name can be based on the prefix.
+   function Translate_Foreign_Id (Decl : Iir) return Foreign_Info_Type;
+
+   --  If not null, this procedure is called when a foreign subprogram is
+   --  created.
+   type Foreign_Hook_Access is access procedure (Decl : Iir;
+                                                 Info : Foreign_Info_Type;
+                                                 Ortho : Ortho_Nodes.O_Dnode);
+   Foreign_Hook : Foreign_Hook_Access := null;
+end Translation;