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cxxabi.h
1 //===--------------------------- cxxabi.h ---------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef __CXXABI_H
11 #define __CXXABI_H
12 
13 /*
14  * This header provides the interface to the C++ ABI as defined at:
15  * http://www.codesourcery.com/cxx-abi/
16  */
17 
18 #include <stddef.h>
19 #include <stdint.h>
20 
21 #include <__cxxabi_config.h>
22 
23 #define _LIBCPPABI_VERSION 1002
24 #define _LIBCXXABI_NORETURN __attribute__((noreturn))
25 
26 #ifdef __cplusplus
27 
28 namespace std {
29 #if defined(_WIN32)
30 class _LIBCXXABI_TYPE_VIS type_info; // forward declaration
31 #else
32 class type_info; // forward declaration
33 #endif
34 }
35 
36 
37 // runtime routines use C calling conventions, but are in __cxxabiv1 namespace
38 namespace __cxxabiv1 {
39 extern "C" {
40 
41 // 2.4.2 Allocating the Exception Object
42 extern _LIBCXXABI_FUNC_VIS void *
43 __cxa_allocate_exception(size_t thrown_size) throw();
44 extern _LIBCXXABI_FUNC_VIS void
45 __cxa_free_exception(void *thrown_exception) throw();
46 
47 // 2.4.3 Throwing the Exception Object
48 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
49 __cxa_throw(void *thrown_exception, std::type_info *tinfo,
50  void (*dest)(void *));
51 
52 // 2.5.3 Exception Handlers
53 extern _LIBCXXABI_FUNC_VIS void *
54 __cxa_get_exception_ptr(void *exceptionObject) throw();
55 extern _LIBCXXABI_FUNC_VIS void *
56 __cxa_begin_catch(void *exceptionObject) throw();
57 extern _LIBCXXABI_FUNC_VIS void __cxa_end_catch();
58 #if defined(_LIBCXXABI_ARM_EHABI)
59 extern _LIBCXXABI_FUNC_VIS bool
60 __cxa_begin_cleanup(void *exceptionObject) throw();
61 extern _LIBCXXABI_FUNC_VIS void __cxa_end_cleanup();
62 #endif
63 extern _LIBCXXABI_FUNC_VIS std::type_info *__cxa_current_exception_type();
64 
65 // 2.5.4 Rethrowing Exceptions
66 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_rethrow();
67 
68 // 2.6 Auxiliary Runtime APIs
69 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_cast(void);
70 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_typeid(void);
71 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
72 __cxa_throw_bad_array_new_length(void);
73 
74 // 3.2.6 Pure Virtual Function API
75 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_pure_virtual(void);
76 
77 // 3.2.7 Deleted Virtual Function API
78 extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_deleted_virtual(void);
79 
80 // 3.3.2 One-time Construction API
81 #ifdef __arm__
82 extern _LIBCXXABI_FUNC_VIS int __cxa_guard_acquire(uint32_t *);
83 extern _LIBCXXABI_FUNC_VIS void __cxa_guard_release(uint32_t *);
84 extern _LIBCXXABI_FUNC_VIS void __cxa_guard_abort(uint32_t *);
85 #else
86 extern _LIBCXXABI_FUNC_VIS int __cxa_guard_acquire(uint64_t *);
87 extern _LIBCXXABI_FUNC_VIS void __cxa_guard_release(uint64_t *);
88 extern _LIBCXXABI_FUNC_VIS void __cxa_guard_abort(uint64_t *);
89 #endif
90 
91 // 3.3.3 Array Construction and Destruction API
92 extern _LIBCXXABI_FUNC_VIS void *
93 __cxa_vec_new(size_t element_count, size_t element_size, size_t padding_size,
94  void (*constructor)(void *), void (*destructor)(void *));
95 
96 extern _LIBCXXABI_FUNC_VIS void *
97 __cxa_vec_new2(size_t element_count, size_t element_size, size_t padding_size,
98  void (*constructor)(void *), void (*destructor)(void *),
99  void *(*alloc)(size_t), void (*dealloc)(void *));
100 
101 extern _LIBCXXABI_FUNC_VIS void *
102 __cxa_vec_new3(size_t element_count, size_t element_size, size_t padding_size,
103  void (*constructor)(void *), void (*destructor)(void *),
104  void *(*alloc)(size_t), void (*dealloc)(void *, size_t));
105 
106 extern _LIBCXXABI_FUNC_VIS void
107 __cxa_vec_ctor(void *array_address, size_t element_count, size_t element_size,
108  void (*constructor)(void *), void (*destructor)(void *));
109 
110 extern _LIBCXXABI_FUNC_VIS void __cxa_vec_dtor(void *array_address,
111  size_t element_count,
112  size_t element_size,
113  void (*destructor)(void *));
114 
115 extern _LIBCXXABI_FUNC_VIS void __cxa_vec_cleanup(void *array_address,
116  size_t element_count,
117  size_t element_size,
118  void (*destructor)(void *));
119 
120 extern _LIBCXXABI_FUNC_VIS void __cxa_vec_delete(void *array_address,
121  size_t element_size,
122  size_t padding_size,
123  void (*destructor)(void *));
124 
125 extern _LIBCXXABI_FUNC_VIS void
126 __cxa_vec_delete2(void *array_address, size_t element_size, size_t padding_size,
127  void (*destructor)(void *), void (*dealloc)(void *));
128 
129 extern _LIBCXXABI_FUNC_VIS void
130 __cxa_vec_delete3(void *__array_address, size_t element_size,
131  size_t padding_size, void (*destructor)(void *),
132  void (*dealloc)(void *, size_t));
133 
134 extern _LIBCXXABI_FUNC_VIS void
135 __cxa_vec_cctor(void *dest_array, void *src_array, size_t element_count,
136  size_t element_size, void (*constructor)(void *, void *),
137  void (*destructor)(void *));
138 
139 // 3.3.5.3 Runtime API
140 extern _LIBCXXABI_FUNC_VIS int __cxa_atexit(void (*f)(void *), void *p,
141  void *d);
142 extern _LIBCXXABI_FUNC_VIS int __cxa_finalize(void *);
143 
144 // 3.4 Demangler API
145 extern _LIBCXXABI_FUNC_VIS char *__cxa_demangle(const char *mangled_name,
146  char *output_buffer,
147  size_t *length, int *status);
148 
149 // Apple additions to support C++ 0x exception_ptr class
150 // These are primitives to wrap a smart pointer around an exception object
151 extern _LIBCXXABI_FUNC_VIS void *__cxa_current_primary_exception() throw();
152 extern _LIBCXXABI_FUNC_VIS void
153 __cxa_rethrow_primary_exception(void *primary_exception);
154 extern _LIBCXXABI_FUNC_VIS void
155 __cxa_increment_exception_refcount(void *primary_exception) throw();
156 extern _LIBCXXABI_FUNC_VIS void
157 __cxa_decrement_exception_refcount(void *primary_exception) throw();
158 
159 // Apple extension to support std::uncaught_exception()
160 extern _LIBCXXABI_FUNC_VIS bool __cxa_uncaught_exception() throw();
161 extern _LIBCXXABI_FUNC_VIS unsigned int __cxa_uncaught_exceptions() throw();
162 
163 #if defined(__linux__) || defined(__Fuchsia__)
164 // Linux and Fuchsia TLS support. Not yet an official part of the Itanium ABI.
165 // https://sourceware.org/glibc/wiki/Destructor%20support%20for%20thread_local%20variables
166 extern _LIBCXXABI_FUNC_VIS int __cxa_thread_atexit(void (*)(void *), void *,
167  void *) throw();
168 #endif
169 
170 } // extern "C"
171 } // namespace __cxxabiv1
172 
173 namespace abi = __cxxabiv1;
174 
175 #endif // __cplusplus
176 
177 #endif // __CXXABI_H
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