mirror of git://gcc.gnu.org/git/gcc.git
100 lines
4.5 KiB
Ada
100 lines
4.5 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- 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;
|