--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/uname.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,188 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                                U N A M E                                 --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+with Namet; use Namet;
+with Types; use Types;
+
+package Uname is
+
+   ---------------------------
+   -- Unit Name Conventions --
+   ---------------------------
+
+   --  Units are associated with a unique ASCII name as follows. First we have
+   --  the fully expanded name of the unit, with lower case letters (except
+   --  for the use of upper case letters for encoding upper half and wide
+   --  characters, as described in Namet), and periods. Following this is one
+   --  of the following suffixes:
+
+   --    %s  for package/subprogram/generic declarations (specs)
+   --    %b  for package/subprogram/generic bodies and subunits
+
+   --  Unit names are stored in the names table, and referred to by the
+   --  corresponding Name_Id values. The type Unit_Name_Type, derived from
+   --  Name_Id, is used to indicate that a Name_Id value that holds a unit name
+   --  (as defined above) is expected.
+
+   --  Note: as far as possible the conventions for unit names are encapsulated
+   --  in this package. The one exception is that package Fname, which provides
+   --  conversion routines from unit names to file names must be aware of the
+   --  precise conventions that are used.
+
+   -------------------
+   -- Display Names --
+   -------------------
+
+   --  For display purposes, unit names are printed out with the suffix
+   --  " (body)" for a body and " (spec)" for a spec. These formats are
+   --  used for the Write_Unit_Name and Get_Unit_Name_String subprograms.
+
+   -----------------
+   -- Subprograms --
+   -----------------
+
+   function Get_Body_Name (N : Unit_Name_Type) return Unit_Name_Type;
+   --  Given the name of a spec, this function returns the name of the
+   --  corresponding body, i.e. characters %s replaced by %b
+
+   function Get_Parent_Body_Name (N : Unit_Name_Type) return Unit_Name_Type;
+   --  Given the name of a subunit, returns the name of the parent body
+
+   function Get_Parent_Spec_Name (N : Unit_Name_Type) return Unit_Name_Type;
+   --  Given the name of a child unit spec or body, returns the unit name
+   --  of the parent spec. Returns No_Name if the given name is not the name
+   --  of a child unit.
+
+   procedure Get_External_Unit_Name_String (N : Unit_Name_Type);
+   --  Given the name of a body or spec unit, this procedure places in
+   --  Name_Buffer the name of the unit with periods replaced by double
+   --  underscores. The spec/body indication is eliminated. The length
+   --  of the stored name is placed in Name_Len. All letters are lower
+   --  case, corresponding to the string used in external names.
+
+   function Get_Spec_Name (N : Unit_Name_Type) return Unit_Name_Type;
+   --  Given the name of a body, this function returns the name of the
+   --  corresponding spec, i.e. characters %b replaced by %s
+
+   function Get_Unit_Name (N : Node_Id) return Unit_Name_Type;
+   --  This procedure returns the unit name that corresponds to the given node,
+   --  which is one of the following:
+   --
+   --    N_Subprogram_Declaration         (spec) cases
+   --    N_Package_Declaration
+   --    N_Generic_Declaration
+   --    N_With_Clause
+   --    N_Function_Instantiation
+   --    N_Package_Instantiation
+   --    N_Procedure_Instantiation
+   --    N_Pragma (Elaborate case)
+   --
+   --    N_Package_Body                   (body) cases
+   --    N_Subprogram_Body
+   --    N_Identifier
+   --    N_Selected_Component
+   --
+   --    N_Subprogram_Body_Stub           (subunit) cases
+   --    N_Package_Body_Stub
+   --    N_Task_Body_Stub
+   --    N_Protected_Body_Stub
+   --    N_Subunit
+
+   procedure Get_Unit_Name_String
+     (N      : Unit_Name_Type;
+      Suffix : Boolean := True);
+   --  Places the display name of the unit in Name_Buffer and sets Name_Len to
+   --  the length of the stored name, i.e. it uses the same interface as the
+   --  Get_Name_String routine in the Namet package. The name is decoded and
+   --  contains an indication of spec or body if Boolean parameter Suffix is
+   --  True.
+
+   function Is_Body_Name (N : Unit_Name_Type) return Boolean;
+   --  Returns True iff the given name is the unit name of a body (i.e. if
+   --  it ends with the characters %b).
+
+   function Is_Child_Name (N : Unit_Name_Type) return Boolean;
+   --  Returns True iff the given name is a child unit name (of either a
+   --  body or a spec).
+
+   function Is_Internal_Unit_Name
+     (Name               : String;
+      Renamings_Included : Boolean := True) return Boolean;
+   --  Same as Fname.Is_Internal_File_Name, except it works with the name of
+   --  the unit, rather than the file name.
+
+   function Is_Predefined_Unit_Name
+     (Name               : String;
+      Renamings_Included : Boolean := True) return Boolean;
+   --  Same as Fname.Is_Predefined_File_Name, except it works with the name of
+   --  the unit, rather than the file name.
+
+   function Is_Spec_Name (N : Unit_Name_Type) return Boolean;
+   --  Returns True iff the given name is the unit name of a specification
+   --  (i.e. if it ends with the characters %s).
+
+   function Name_To_Unit_Name (N : Name_Id) return Unit_Name_Type;
+   --  Given the Id of the Ada name of a unit, this function returns the
+   --  corresponding unit name of the spec (by appending %s to the name).
+
+   function New_Child
+     (Old  : Unit_Name_Type;
+      Newp : Unit_Name_Type) return Unit_Name_Type;
+   --   Old is a child unit name (for either a body or spec). Newp is the unit
+   --   name of the actual parent (this may be different from the parent in
+   --   old). The returned unit name is formed by taking the parent name from
+   --   Newp and the child unit name from Old, with the result being a body or
+   --   spec depending on Old. For example:
+   --
+   --     Old    = A.B.C (body)
+   --     Newp   = A.R (spec)
+   --     result = A.R.C (body)
+   --
+   --   See spec of Load_Unit for extensive discussion of why this routine
+   --   needs to be used (the call in the body of Load_Unit is the only one).
+
+   function Uname_Ge (Left, Right : Unit_Name_Type) return Boolean;
+   function Uname_Gt (Left, Right : Unit_Name_Type) return Boolean;
+   function Uname_Le (Left, Right : Unit_Name_Type) return Boolean;
+   function Uname_Lt (Left, Right : Unit_Name_Type) return Boolean;
+   --  These functions perform lexicographic ordering of unit names. The
+   --  ordering is suitable for printing, and is not quite a straightforward
+   --  comparison of the names, since the convention is that specs appear
+   --  before bodies. Note that the standard = and /= operators work fine
+   --  because all unit names are hashed into the name table, so if two names
+   --  are the same, they always have the same Name_Id value.
+
+   procedure Write_Unit_Name (N : Unit_Name_Type);
+   --  Given a unit name, this procedure writes the display name to the
+   --  standard output file. Name_Buffer and Name_Len are set as described
+   --  above for the Get_Unit_Name_String call on return.
+
+end Uname;