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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [libsupc++/] [eh_throw.cc] - Rev 516
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// -*- C++ -*- Exception handling routines for throwing. // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 // 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 3, or (at your option) // any later version. // // GCC 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. // // 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" using namespace __cxxabiv1; static void __gxx_exception_cleanup (_Unwind_Reason_Code code, _Unwind_Exception *exc) { // This cleanup is set only for primaries. __cxa_refcounted_exception *header = __get_refcounted_exception_header_from_ue (exc); // 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 // like the GCC _Unwind_DeleteException function does. if (code != _URC_FOREIGN_EXCEPTION_CAUGHT && code != _URC_NO_REASON) __terminate (header->exc.terminateHandler); #ifdef _GLIBCXX_ATOMIC_BUILTINS_4 if (__sync_sub_and_fetch (&header->referenceCount, 1) == 0) { #endif if (header->exc.exceptionDestructor) header->exc.exceptionDestructor (header + 1); __cxa_free_exception (header + 1); #ifdef _GLIBCXX_ATOMIC_BUILTINS_4 } #endif } extern "C" void __cxxabiv1::__cxa_throw (void *obj, std::type_info *tinfo, void (*dest) (void *)) { // 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->exc.unwindHeader); #else _Unwind_RaiseException (&header->exc.unwindHeader); #endif // Some sort of unwinding error. Note that terminate is a handler. __cxa_begin_catch (&header->exc.unwindHeader); std::terminate (); } extern "C" void __cxxabiv1::__cxa_rethrow () { __cxa_eh_globals *globals = __cxa_get_globals (); __cxa_exception *header = globals->caughtExceptions; globals->uncaughtExceptions += 1; // Watch for luser rethrowing with no active exception. if (header) { // Tell __cxa_end_catch this is a rethrow. 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 #if defined(_LIBUNWIND_STD_ABI) _Unwind_RaiseException (&header->unwindHeader); #else _Unwind_Resume_or_Rethrow (&header->unwindHeader); #endif #endif // Some sort of unwinding error. Note that terminate is a handler. __cxa_begin_catch (&header->unwindHeader); } std::terminate (); }