1 files changed, 102 insertions, 0 deletions
diff --git a/libstdc++-v3/libsupc++/eh_throw.cc b/libstdc++-v3/libsupc++/eh_throw.cc
new file mode 100644
index 00000000000..a8e9ba34557
--- /dev/null
+++ b/libstdc++-v3/libsupc++/eh_throw.cc
@@ -0,0 +1,102 @@
+// -*- C++ -*- Exception handling routines for throwing.
+// Copyright (C) 2001 Free Software Foundation, Inc.
+//
+// This file is part of GNU CC.
+//
+// GNU CC 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)
+// any later version.
+//
+// GNU CC is distributed in the hope that it will be useful,
+// but WITHOUT 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
+// along with GNU CC; 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.
+
+
+#include <bits/c++config.h>
+#include "unwind-cxx.h"
+
+
+using namespace __cxxabiv1;
+
+
+static void
+__gxx_exception_cleanup (_Unwind_Reason_Code code, _Unwind_Exception *exc)
+{
+  __cxa_exception *header = __get_exception_header_from_ue (exc);
+
+  // If we havn't been caught by a foreign handler, then this is
+  // some sort of unwind error.  In that case just die immediately.
+  if (code != _URC_FOREIGN_EXCEPTION_CAUGHT)
+    __terminate (header->terminateHandler);
+
+  if (header->exceptionDestructor)
+    header->exceptionDestructor (header + 1);
+
+  __cxa_free_exception (header + 1);
+}
+
+
+extern "C" void
+__cxa_throw (void *obj, std::type_info *tinfo, void (*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;
+
+  __cxa_eh_globals *globals = __cxa_get_globals ();
+  globals->uncaughtExceptions += 1;
+
+#ifdef _GLIBCPP_SJLJ_EXCEPTIONS
+  _Unwind_SjLj_RaiseException (&header->unwindHeader);
+#else
+  _Unwind_RaiseException (&header->unwindHeader);
+#endif
+
+  // Some sort of unwinding error.  Note that terminate is a handler.
+  __cxa_begin_catch (&header->unwindHeader);
+  std::terminate ();
+}
+
+extern "C" void
+__cxa_rethrow ()
+{
+  __cxa_eh_globals *globals = __cxa_get_globals ();
+  __cxa_exception *header = globals->caughtExceptions;
+
+  // Watch for luser rethrowing with no active exception.
+  if (header)
+    {
+      // Tell __cxa_end_catch this is a rethrow.
+      header->handlerCount = -header->handlerCount;
+
+#ifdef _GLIBCPP_SJLJ_EXCEPTIONS
+      _Unwind_SjLj_RaiseException (&header->unwindHeader);
+#else
+      _Unwind_RaiseException (&header->unwindHeader);
+#endif
+  
+      // Some sort of unwinding error.  Note that terminate is a handler.
+      __cxa_begin_catch (&header->unwindHeader);
+    }
+  std::terminate ();
+}