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Diffstat (limited to 'gcc/ada/g-excact.adb')
| -rw-r--r-- | gcc/ada/g-excact.adb | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/gcc/ada/g-excact.adb b/gcc/ada/g-excact.adb new file mode 100644 index 00000000000..3c41a5138df --- /dev/null +++ b/gcc/ada/g-excact.adb @@ -0,0 +1,134 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- G N A T . E X C E P T I O N _ A C T I O N S -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2002-2003 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 2, 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +with Ada.Exceptions; use Ada.Exceptions; +with Ada.Unchecked_Conversion; +with System; +with System.Soft_Links; use System.Soft_Links; +with System.Standard_Library; use System.Standard_Library; +with System.Exception_Table; use System.Exception_Table; + +package body GNAT.Exception_Actions is + + Global_Action : Exception_Action; + pragma Import (C, Global_Action, "__gnat_exception_actions_global_action"); + -- Imported from Ada.Exceptions. Any change in the external name needs to + -- be coordinated with a-except.adb + + Raise_Hook_Initialized : Boolean; + pragma Import + (Ada, Raise_Hook_Initialized, "__gnat_exception_actions_initialized"); + + function To_Raise_Action is new Ada.Unchecked_Conversion + (Exception_Action, Raise_Action); + + -- ??? Would be nice to have this in System.Standard_Library + function To_Data is new Ada.Unchecked_Conversion + (Exception_Id, Exception_Data_Ptr); + function To_Id is new Ada.Unchecked_Conversion + (Exception_Data_Ptr, Exception_Id); + + ---------------------------- + -- Register_Global_Action -- + ---------------------------- + + procedure Register_Global_Action (Action : Exception_Action) is + begin + Lock_Task.all; + Global_Action := Action; + Unlock_Task.all; + end Register_Global_Action; + + ------------------------ + -- Register_Id_Action -- + ------------------------ + + procedure Register_Id_Action + (Id : Exception_Id; + Action : Exception_Action) + is + begin + if Id = Null_Id then + raise Program_Error; + end if; + + Lock_Task.all; + To_Data (Id).Raise_Hook := To_Raise_Action (Action); + Raise_Hook_Initialized := True; + Unlock_Task.all; + end Register_Id_Action; + + --------------- + -- Core_Dump -- + --------------- + + procedure Core_Dump (Occurrence : Exception_Occurrence) is separate; + + ---------------- + -- Name_To_Id -- + ---------------- + + function Name_To_Id (Name : String) return Exception_Id is + begin + return To_Id (Internal_Exception (Name, False)); + end Name_To_Id; + + --------------------------------- + -- Registered_Exceptions_Count -- + --------------------------------- + + function Registered_Exceptions_Count return Natural renames + System.Exception_Table.Registered_Exceptions_Count; + + ------------------------------- + -- Get_Registered_Exceptions -- + ------------------------------- + -- This subprogram isn't an iterator to avoid concurrency problems, + -- since the exceptions are registered dynamically. Since we have to lock + -- the runtime while computing this array, this means that any callback in + -- an active iterator would be unable to access the runtime. + + procedure Get_Registered_Exceptions + (List : out Exception_Id_Array; + Last : out Integer) + is + Ids : Exception_Data_Array (List'Range); + begin + Get_Registered_Exceptions (Ids, Last); + + for L in List'First .. Last loop + List (L) := To_Id (Ids (L)); + end loop; + end Get_Registered_Exceptions; + +end GNAT.Exception_Actions; |