gcc/ada/s-vmexta.ads

   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) 1997-2007, 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 2,  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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This package is usually used only on Alpha/VMS systems in the case
  35 --  where there is at least one Import/Export exception present.
  36
  37 with System.Standard_Library;
  38
  39 package System.VMS_Exception_Table is
  40
  41    package SSL renames System.Standard_Library;
  42
  43    procedure Register_VMS_Exception
  44      (Code : SSL.Exception_Code;
  45       E    : SSL.Exception_Data_Ptr);
  46    --  Register an exception in the hash table mapping with a VMS
  47    --  condition code.
  48
  49    --  LOTS more comments needed here regarding the entire scheme ???
  50
  51 private
  52
  53    function Base_Code_In (Code : SSL.Exception_Code) return SSL.Exception_Code;
  54    --  Value of Code with the severity bits masked off
  55
  56    function Coded_Exception (X : SSL.Exception_Code)
  57      return SSL.Exception_Data_Ptr;
  58    --  Given a VMS condition, find and return it's allocated Ada exception
  59    --  (called only from init.c).
  60
  61 end System.VMS_Exception_Table;