1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                S Y S T E M . E X C E P T I O N S _ D E B U G             --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 2006-2018, 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 contains internal routines used as debugger helpers.
33--  It should be compiled without optimization to let debuggers inspect
34--  parameter values reliably from breakpoints on the routines.
35
36pragma Compiler_Unit_Warning;
37
38with System.Standard_Library;
39
40package System.Exceptions_Debug is
41
42   pragma Preelaborate;
43   --  To let Ada.Exceptions "with" us and let us "with" Standard_Library
44
45   package SSL renames System.Standard_Library;
46   --  To let some of the hooks below have formal parameters typed in
47   --  accordance with what GDB expects.
48
49   procedure Debug_Raise_Exception
50     (E : SSL.Exception_Data_Ptr; Message : String);
51   pragma Export
52     (Ada, Debug_Raise_Exception, "__gnat_debug_raise_exception");
53   --  Hook called at a "raise" point for an exception E, when it is
54   --  just about to be propagated.
55
56   procedure Debug_Unhandled_Exception (E : SSL.Exception_Data_Ptr);
57   pragma Export
58     (Ada, Debug_Unhandled_Exception, "__gnat_unhandled_exception");
59   --  Hook called during the propagation process of an exception E, as soon
60   --  as it is known to be unhandled.
61
62   procedure Debug_Raise_Assert_Failure;
63   pragma Export
64     (Ada, Debug_Raise_Assert_Failure, "__gnat_debug_raise_assert_failure");
65   --  Hook called when an assertion failed. This is used by the debugger to
66   --  intercept assertion failures, and treat them specially.
67
68   procedure Local_Raise (Excep : System.Address);
69   pragma Export (Ada, Local_Raise);
70   --  This is a dummy routine, used only by the debugger for the purpose of
71   --  logging local raise statements that were transformed into a direct goto
72   --  to the handler code. The compiler in this case generates:
73   --
74   --    Local_Raise (exception_data'address);
75   --    goto Handler
76   --
77   --  The argument is the address of the exception data
78end System.Exceptions_Debug;
79