1 /* except-gcc.h -*-C++-*-
2 *
3 *************************************************************************
4 *
5 * @copyright
6 * Copyright (C) 2009-2013, Intel Corporation
7 * All rights reserved.
8 *
9 * @copyright
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * * Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * * Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 * * Neither the name of Intel Corporation nor the names of its
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
23 *
24 * @copyright
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
30 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
31 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
32 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
33 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
35 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 **************************************************************************/
38
39 /**
40 * @file except-gcc.h
41 *
42 * @brief ABI for gcc exception handling.
43 *
44 * @par Origin
45 * The code below is generally copied from the Intel Itanium ABI (Intel
46 * download 245370).
47 */
48
49 #ifndef INCLUDED_EXCEPT_GCC_DOT_H
50 #define INCLUDED_EXCEPT_GCC_DOT_H
51
52 #ifndef __cplusplus
53 # error except-gcc.h should be used in C++ code only.
54 #endif
55
56 #include <cilk/common.h>
57 #include <exception>
58 #include <typeinfo>
59
60 struct __cxa_exception;
61
62 __CILKRTS_BEGIN_EXTERN_C
63
64 /** Unwind reason code (Itanium ABI 6.1.2.1) */
65 typedef enum _Unwind_Reason_Code {
66 _URC_NO_REASON = 0,
67 _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
68 _URC_FATAL_PHASE2_ERROR = 2,
69 _URC_FATAL_PHASE1_ERROR = 3,
70 _URC_NORMAL_STOP = 4,
71 _URC_END_OF_STACK = 5,
72 _URC_HANDLER_FOUND = 6,
73 _URC_INSTALL_CONTEXT = 7,
74 _URC_CONTINUE_UNWIND = 8
75 } _Unwind_Reason_Code;
76
77 typedef struct _Unwind_Exception _Unwind_Exception;
78
79 /** Exception cleanup function pointer (Itanium ABI 6.1.2.2) */
80 typedef void (*_Unwind_Exception_Cleanup_Fn)(_Unwind_Reason_Code reason,
81 _Unwind_Exception *exc);
82
83 /**
84 * @brief Exception undwinding information
85 *
86 * This is copied from the Intel Itanium ABI except that the
87 * private fields are declared unsigned long for binary
88 * compatibility with gcc/g++ on 32 bit machines.
89 */
90 struct _Unwind_Exception
91 {
92 uint64_t exception_class;
93 _Unwind_Exception_Cleanup_Fn exception_cleanup;
94 unsigned long private_1;
95 unsigned long private_2;
96 };
97
98 /** Throw or rethrow an exception */
99 _Unwind_Reason_Code
100 _Unwind_RaiseException(_Unwind_Exception *exception_object);
101
102 /** Resume an exception other than by rethrowing it. */
103 void _Unwind_Resume(_Unwind_Exception *exception_object);
104
105 /** Delete an exception object */
106 void _Unwind_DeleteException(_Unwind_Exception *exception_object);
107
108 /**
109 * C++ exception ABI.
110 * The following declarations are from
111 *
112 * http://www.codesourcery.com/public/cxx-abi/abi-eh.html#cxx-abi
113 */
114
115 struct __cxa_exception {
116 std::type_info * exceptionType;
117 void (*exceptionDestructor)(void *);
118 std::unexpected_handler unexpectedHandler;
119 std::terminate_handler terminateHandler;
120 __cxa_exception * nextException;
121
122 int handlerCount;
123 int handlerSwitchValue;
124 const char * actionRecord;
125 const char * languageSpecificData;
126 void * catchTemp;
127 void * adjustedPtr;
128
129 _Unwind_Exception unwindHeader;
130 };
131
to_cxx(_Unwind_Exception * e)132 static inline __cxa_exception *to_cxx(_Unwind_Exception *e)
133 {
134 return ((__cxa_exception *)(e+1)) - 1;
135 }
136
137 typedef struct __cxa_eh_globals {
138 __cxa_exception *caughtExceptions;
139 unsigned int uncaughtExceptions;
140 } __cxa_eh_globals;
141
142 __cxa_eh_globals*__cxa_get_globals(void) throw();
143
144 __CILKRTS_END_EXTERN_C
145
146 #endif // ! defined(INCLUDED_EXCEPT_GCC_DOT_H)
147