1 // -*- C++ -*- Exception handling routines for throwing.
2 // Copyright (C) 2001, 2003 Free Software Foundation, Inc.
4 // This file is part of GCC.
6 // GCC is free software; you can redistribute it and/or modify
7 // it under the terms of the GNU General Public License as published by
8 // the Free Software Foundation; either version 2, or (at your option)
11 // GCC is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with GCC; see the file COPYING. If not, write to
18 // the Free Software Foundation, 59 Temple Place - Suite 330,
19 // Boston, MA 02111-1307, USA.
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
31 #include <bits/c++config.h>
32 #include "unwind-cxx.h"
35 using namespace __cxxabiv1
;
39 __gxx_exception_cleanup (_Unwind_Reason_Code code
, _Unwind_Exception
*exc
)
41 __cxa_exception
*header
= __get_exception_header_from_ue (exc
);
43 // If we haven't been caught by a foreign handler, then this is
44 // some sort of unwind error. In that case just die immediately.
45 // _Unwind_DeleteException in the HP-UX IA64 libunwind library
46 // returns _URC_NO_REASON and not _URC_FOREIGN_EXCEPTION_CAUGHT
47 // like the GCC _Unwind_DeleteException function does.
48 if (code
!= _URC_FOREIGN_EXCEPTION_CAUGHT
&& code
!= _URC_NO_REASON
)
49 __terminate (header
->terminateHandler
);
51 if (header
->exceptionDestructor
)
52 header
->exceptionDestructor (header
+ 1);
54 __cxa_free_exception (header
+ 1);
59 __cxa_throw (void *obj
, std::type_info
*tinfo
, void (*dest
) (void *))
61 __cxa_exception
*header
= __get_exception_header_from_obj (obj
);
62 header
->exceptionType
= tinfo
;
63 header
->exceptionDestructor
= dest
;
64 header
->unexpectedHandler
= __unexpected_handler
;
65 header
->terminateHandler
= __terminate_handler
;
66 header
->unwindHeader
.exception_class
= __gxx_exception_class
;
67 header
->unwindHeader
.exception_cleanup
= __gxx_exception_cleanup
;
69 __cxa_eh_globals
*globals
= __cxa_get_globals ();
70 globals
->uncaughtExceptions
+= 1;
72 #ifdef _GLIBCPP_SJLJ_EXCEPTIONS
73 _Unwind_SjLj_RaiseException (&header
->unwindHeader
);
75 _Unwind_RaiseException (&header
->unwindHeader
);
78 // Some sort of unwinding error. Note that terminate is a handler.
79 __cxa_begin_catch (&header
->unwindHeader
);
86 __cxa_eh_globals
*globals
= __cxa_get_globals ();
87 __cxa_exception
*header
= globals
->caughtExceptions
;
89 // Watch for luser rethrowing with no active exception.
92 // Tell __cxa_end_catch this is a rethrow.
93 if (header
->unwindHeader
.exception_class
!= __gxx_exception_class
)
94 globals
->caughtExceptions
= 0;
96 header
->handlerCount
= -header
->handlerCount
;
98 #ifdef _GLIBCPP_SJLJ_EXCEPTIONS
99 _Unwind_SjLj_Resume_or_Rethrow (&header
->unwindHeader
);
101 #ifdef _LIBUNWIND_STD_ABI
102 _Unwind_RaiseException (&header
->unwindHeader
);
104 _Unwind_Resume_or_Rethrow (&header
->unwindHeader
);
108 // Some sort of unwinding error. Note that terminate is a handler.
109 __cxa_begin_catch (&header
->unwindHeader
);