1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . E X C E P T I O N S --
9 -- Copyright (C) 2006-2007, Free Software Foundation, Inc. --
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. --
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. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This package contains internal routines used as debugger helpers.
35 -- It should be compiled without optimization to let debuggers inspect
36 -- parameter values reliably from breakpoints on the routines.
38 with System.Standard_Library;
40 package System.Exceptions is
42 pragma Warnings (Off);
43 pragma Preelaborate_05;
45 -- To let Ada.Exceptions "with" us and let us "with" Standard_Library
47 package SSL renames System.Standard_Library;
48 -- To let some of the hooks below have formal parameters typed in
49 -- accordance with what GDB expects.
51 procedure Debug_Raise_Exception (E : SSL.Exception_Data_Ptr);
53 (Ada, Debug_Raise_Exception, "__gnat_debug_raise_exception");
54 -- Hook called at a "raise" point for an exception E, when it is
55 -- just about to be propagated.
57 procedure Debug_Unhandled_Exception (E : SSL.Exception_Data_Ptr);
59 (Ada, Debug_Unhandled_Exception, "__gnat_unhandled_exception");
60 -- Hook called during the propagation process of an exception E, as soon
61 -- as it is known to be unhandled.
63 procedure Debug_Raise_Assert_Failure;
65 (Ada, Debug_Raise_Assert_Failure, "__gnat_debug_raise_assert_failure");
66 -- Hook called when an assertion failed. This is used by the debugger to
67 -- intercept assertion failures, and treat them specially.
69 procedure Local_Raise (Excep : System.Address);
70 pragma Export (Ada, Local_Raise);
71 -- This is a dummy routine, used only by the debugger for the purpose of
72 -- logging local raise statements that were transformed into a direct goto
73 -- to the handler code. The compiler in this case generates:
75 -- Local_Raise (exception_data'address);
78 -- The argument is the address of the exception data
80 end System.Exceptions;