// -*- C++ -*- Exception handling routines for throwing.
-// Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+// 2011, 2012 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
// GCC is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2, or (at your option)
+// the Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// GCC is distributed in the hope that it will be useful,
// 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
-// along with GCC; see the file COPYING. If not, write to
-// the Free Software Foundation, 59 Temple Place - Suite 330,
-// Boston, MA 02111-1307, USA.
-
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file 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 General Public License.
+// 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/>.
#include <bits/c++config.h>
#include "unwind-cxx.h"
static void
__gxx_exception_cleanup (_Unwind_Reason_Code code, _Unwind_Exception *exc)
{
- __cxa_exception *header = __get_exception_header_from_ue (exc);
+ // This cleanup is set only for primaries.
+ __cxa_refcounted_exception *header
+ = __get_refcounted_exception_header_from_ue (exc);
- // If we haven't been caught by a foreign handler, then this is
- // some sort of unwind error. In that case just die immediately.
+ // We only want to be called through _Unwind_DeleteException.
// _Unwind_DeleteException in the HP-UX IA64 libunwind library
- // returns _URC_NO_REASON and not _URC_FOREIGN_EXCEPTION_CAUGHT
+ // returns _URC_NO_REASON and not _URC_FOREIGN_EXCEPTION_CAUGHT
// like the GCC _Unwind_DeleteException function does.
if (code != _URC_FOREIGN_EXCEPTION_CAUGHT && code != _URC_NO_REASON)
- __terminate (header->terminateHandler);
+ __terminate (header->exc.terminateHandler);
- if (header->exceptionDestructor)
- header->exceptionDestructor (header + 1);
+#if ATOMIC_INT_LOCK_FREE > 1
+ if (__atomic_sub_fetch (&header->referenceCount, 1, __ATOMIC_ACQ_REL) == 0)
+ {
+#endif
+ if (header->exc.exceptionDestructor)
+ header->exc.exceptionDestructor (header + 1);
- __cxa_free_exception (header + 1);
+ __cxa_free_exception (header + 1);
+#if ATOMIC_INT_LOCK_FREE > 1
+ }
+#endif
}
extern "C" void
-__cxxabiv1::__cxa_throw (void *obj, std::type_info *tinfo,
- void (*dest) (void *))
+__cxxabiv1::__cxa_throw (void *obj, std::type_info *tinfo,
+ void (_GLIBCXX_CDTOR_CALLABI *dest) (void *))
{
- __cxa_exception *header = __get_exception_header_from_obj (obj);
- header->exceptionType = tinfo;
- header->exceptionDestructor = dest;
- header->unexpectedHandler = __unexpected_handler;
- header->terminateHandler = __terminate_handler;
- header->unwindHeader.exception_class = __gxx_exception_class;
- header->unwindHeader.exception_cleanup = __gxx_exception_cleanup;
+ // Definitely a primary.
+ __cxa_refcounted_exception *header
+ = __get_refcounted_exception_header_from_obj (obj);
+ header->referenceCount = 1;
+ header->exc.exceptionType = tinfo;
+ header->exc.exceptionDestructor = dest;
+ header->exc.unexpectedHandler = __unexpected_handler;
+ header->exc.terminateHandler = __terminate_handler;
+ __GXX_INIT_PRIMARY_EXCEPTION_CLASS(header->exc.unwindHeader.exception_class);
+ header->exc.unwindHeader.exception_cleanup = __gxx_exception_cleanup;
#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
- _Unwind_SjLj_RaiseException (&header->unwindHeader);
+ _Unwind_SjLj_RaiseException (&header->exc.unwindHeader);
#else
- _Unwind_RaiseException (&header->unwindHeader);
+ _Unwind_RaiseException (&header->exc.unwindHeader);
#endif
// Some sort of unwinding error. Note that terminate is a handler.
- __cxa_begin_catch (&header->unwindHeader);
+ __cxa_begin_catch (&header->exc.unwindHeader);
std::terminate ();
}
if (header)
{
// Tell __cxa_end_catch this is a rethrow.
- if (header->unwindHeader.exception_class != __gxx_exception_class)
+ if (!__is_gxx_exception_class(header->unwindHeader.exception_class))
globals->caughtExceptions = 0;
else
header->handlerCount = -header->handlerCount;
#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
_Unwind_SjLj_Resume_or_Rethrow (&header->unwindHeader);
#else
-#ifdef _LIBUNWIND_STD_ABI
+#if defined(_LIBUNWIND_STD_ABI)
_Unwind_RaiseException (&header->unwindHeader);
#else
_Unwind_Resume_or_Rethrow (&header->unwindHeader);
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