| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- A D A . E X C E P T I O N S . E X C E P T I O N _ P R O P A G A T I O N -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2012, 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 is the default version, using the __builtin_setjmp/longjmp EH |
| -- mechanism. |
| |
| with Ada.Unchecked_Conversion; |
| |
| separate (Ada.Exceptions) |
| package body Exception_Propagation is |
| |
| -- Common binding to __builtin_longjmp for sjlj variants. |
| |
| procedure builtin_longjmp (buffer : System.Address; Flag : Integer); |
| pragma No_Return (builtin_longjmp); |
| pragma Import (Intrinsic, builtin_longjmp, "__builtin_longjmp"); |
| |
| procedure Propagate_Continue (E : Exception_Id); |
| pragma No_Return (Propagate_Continue); |
| pragma Export (C, Propagate_Continue, "__gnat_raise_nodefer_with_msg"); |
| -- A call to this procedure is inserted automatically by GIGI, in order |
| -- to continue the propagation when the exception was not handled. |
| -- The linkage name is historical. |
| |
| ------------------------- |
| -- Allocate_Occurrence -- |
| ------------------------- |
| |
| function Allocate_Occurrence return EOA is |
| begin |
| return Get_Current_Excep.all; |
| end Allocate_Occurrence; |
| |
| ------------------------- |
| -- Propagate_Exception -- |
| ------------------------- |
| |
| procedure Propagate_Exception (Excep : EOA) is |
| Jumpbuf_Ptr : constant Address := Get_Jmpbuf_Address.all; |
| |
| begin |
| -- If the jump buffer pointer is non-null, transfer control using |
| -- it. Otherwise announce an unhandled exception (note that this |
| -- means that we have no finalizations to do other than at the outer |
| -- level). Perform the necessary notification tasks in both cases. |
| |
| if Jumpbuf_Ptr /= Null_Address then |
| if not Excep.Exception_Raised then |
| Excep.Exception_Raised := True; |
| Exception_Traces.Notify_Handled_Exception (Excep); |
| end if; |
| |
| builtin_longjmp (Jumpbuf_Ptr, 1); |
| |
| else |
| Exception_Traces.Notify_Unhandled_Exception (Excep); |
| Exception_Traces.Unhandled_Exception_Terminate (Excep); |
| end if; |
| end Propagate_Exception; |
| |
| ------------------------ |
| -- Propagate_Continue -- |
| ------------------------ |
| |
| procedure Propagate_Continue (E : Exception_Id) is |
| pragma Unreferenced (E); |
| begin |
| Propagate_Exception (Get_Current_Excep.all); |
| end Propagate_Continue; |
| |
| end Exception_Propagation; |
