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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                    S Y S T E M . E X C E P T I O N S                     --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 2006-2009, 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.      --

--                                                                          --

------------------------------------------------------------------------------

--  This package contains internal routines used as debugger helpers.

--  It should be compiled without optimization to let debuggers inspect

--  parameter values reliably from breakpoints on the routines.

pragma Compiler_Unit;

with System.Standard_Library;

package System.Exceptions is

   pragma Preelaborate_05;

   --  To let Ada.Exceptions "with" us and let us "with" Standard_Library

   package SSL renames System.Standard_Library;

   --  To let some of the hooks below have formal parameters typed in

   --  accordance with what GDB expects.

   procedure Debug_Raise_Exception (E : SSL.Exception_Data_Ptr);

   pragma Export

     (Ada, Debug_Raise_Exception, "__gnat_debug_raise_exception");

   --  Hook called at a "raise" point for an exception E, when it is

   --  just about to be propagated.

   procedure Debug_Unhandled_Exception (E : SSL.Exception_Data_Ptr);

   pragma Export

     (Ada, Debug_Unhandled_Exception, "__gnat_unhandled_exception");

   --  Hook called during the propagation process of an exception E, as soon

   --  as it is known to be unhandled.

   procedure Debug_Raise_Assert_Failure;

   pragma Export

     (Ada, Debug_Raise_Assert_Failure, "__gnat_debug_raise_assert_failure");

   --  Hook called when an assertion failed. This is used by the debugger to

   --  intercept assertion failures, and treat them specially.

   procedure Local_Raise (Excep : System.Address);

   pragma Export (Ada, Local_Raise);

   --  This is a dummy routine, used only by the debugger for the purpose of

   --  logging local raise statements that were transformed into a direct goto

   --  to the handler code. The compiler in this case generates:

   --

   --    Local_Raise (exception_data'address);

   --    goto Handler

   --

   --  The argument is the address of the exception data

end System.Exceptions;