1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--            S Y S T E M . V M S _ E X C E P T I O N _ T A B L E           --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1997-2013, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  This package is usually used only on OpenVMS systems in the case
33--  where there is at least one Import/Export exception present.
34
35with System.Standard_Library;
36
37package System.VMS_Exception_Table is
38
39   package SSL renames System.Standard_Library;
40
41   subtype Exception_Code is System.Address;
42
43   procedure Register_VMS_Exception
44     (Code : Exception_Code;
45      E    : SSL.Exception_Data_Ptr);
46   --  Register an exception in hash table mapping with a VMS condition code.
47   --
48   --  The table is used by exception code (the personnality routine) to detect
49   --  wether a VMS exception (aka condition) is known by the Ada code. In
50   --  that case, the identity of the imported or exported exception is used
51   --  to create the occurrence.
52
53   --  LOTS more comments needed here regarding the entire scheme ???
54
55private
56
57   --  The following functions are directly called (without import/export) in
58   --  init.c by __gnat_handle_vms_condition.
59
60   function Base_Code_In (Code : Exception_Code) return Exception_Code;
61   --  Value of Code with the severity bits masked off
62
63   function Coded_Exception (X : Exception_Code)
64     return SSL.Exception_Data_Ptr;
65   --  Given a VMS condition, find and return its allocated Ada exception
66
67end System.VMS_Exception_Table;
68