1 // new abi support -*- C++ -*-
3 // Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
5 // This file is part of GCC.
7 // GCC is free software; you can redistribute it and/or modify
8 // it under the terms of the GNU General Public License as published by
9 // the Free Software Foundation; either version 2, or (at your option)
12 // GCC is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with GCC; see the file COPYING. If not, write to
19 // the Free Software Foundation, 59 Temple Place - Suite 330,
20 // Boston, MA 02111-1307, USA.
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
31 // Written by Nathan Sidwell, Codesourcery LLC, <nathan@codesourcery.com>
33 /* This file declares the new abi entry points into the runtime. It is not
34 normally necessary for user programs to include this header, or use the
35 entry points directly. However, this header is available should that be
38 Some of the entry points are intended for both C and C++, thus this header
39 is includable from both C and C++. Though the C++ specific parts are not
40 available in C, naturally enough. */
45 #pragma GCC visibility push(default)
48 #include <bits/cxxabi_tweaks.h>
53 typedef __cxa_cdtor_return_type (*__cxa_cdtor_type)(void *);
61 __cxa_vec_new(size_t __element_count, size_t __element_size,
62 size_t __padding_size, __cxa_cdtor_type constructor,
63 __cxa_cdtor_type destructor);
66 __cxa_vec_new2(size_t __element_count, size_t __element_size,
67 size_t __padding_size, __cxa_cdtor_type constructor,
68 __cxa_cdtor_type destructor, void *(*__alloc) (size_t),
69 void (*__dealloc) (void*));
72 __cxa_vec_new3(size_t __element_count, size_t __element_size,
73 size_t __padding_size, __cxa_cdtor_type constructor,
74 __cxa_cdtor_type destructor, void *(*__alloc) (size_t),
75 void (*__dealloc) (void*, size_t));
78 __cxa_vec_ctor_return_type
79 __cxa_vec_ctor(void* __array_address, size_t __element_count,
80 size_t __element_size, __cxa_cdtor_type constructor,
81 __cxa_cdtor_type destructor);
83 __cxa_vec_ctor_return_type
84 __cxa_vec_cctor(void* dest_array, void* src_array, size_t element_count,
86 __cxa_cdtor_return_type (*constructor) (void*, void*),
87 __cxa_cdtor_type destructor);
91 __cxa_vec_dtor(void* __array_address, size_t __element_count,
92 size_t __element_size, __cxa_cdtor_type destructor);
95 __cxa_vec_cleanup(void* __array_address, size_t __element_count,
96 size_t __element_size, __cxa_cdtor_type destructor);
98 // Destruct and release array.
100 __cxa_vec_delete(void* __array_address, size_t __element_size,
101 size_t __padding_size, __cxa_cdtor_type destructor);
104 __cxa_vec_delete2(void* __array_address, size_t __element_size,
105 size_t __padding_size, __cxa_cdtor_type destructor,
106 void (*__dealloc) (void*));
109 __cxa_vec_delete3(void* __array_address, size_t __element_size,
110 size_t __padding_size, __cxa_cdtor_type destructor,
111 void (*__dealloc) (void*, size_t));
114 __cxa_guard_acquire(__guard*);
117 __cxa_guard_release(__guard*);
120 __cxa_guard_abort(__guard*);
122 // Pure virtual functions.
124 __cxa_pure_virtual(void);
126 // Exception handling.
135 __cxa_atexit(void (*)(void*), void*, void*);
138 __cxa_finalize(void*);
140 // Demangling routines.
142 __cxa_demangle(const char* __mangled_name, char* __output_buffer,
143 size_t* __length, int* __status);
146 } // namespace __cxxabiv1
155 // Type information for int, float etc.
156 class __fundamental_type_info : public std::type_info
160 __fundamental_type_info(const char* __n) : std::type_info(__n) { }
163 ~__fundamental_type_info();
166 // Type information for array objects.
167 class __array_type_info : public std::type_info
171 __array_type_info(const char* __n) : std::type_info(__n) { }
174 ~__array_type_info();
177 // Type information for functions (both member and non-member).
178 class __function_type_info : public std::type_info
182 __function_type_info(const char* __n) : std::type_info(__n) { }
185 ~__function_type_info();
188 // Implementation defined member function.
190 __is_function_p() const;
193 // Type information for enumerations.
194 class __enum_type_info : public std::type_info
198 __enum_type_info(const char* __n) : std::type_info(__n) { }
204 // Common type information for simple pointers and pointers to member.
205 class __pbase_type_info : public std::type_info
208 unsigned int __flags; // Qualification of the target object.
209 const std::type_info* __pointee; // Type of pointed to object.
212 __pbase_type_info(const char* __n, int __quals,
213 const std::type_info* __type)
214 : std::type_info(__n), __flags(__quals), __pointee(__type)
218 ~__pbase_type_info();
220 // Implementation defined type.
224 __volatile_mask = 0x2,
225 __restrict_mask = 0x4,
226 __incomplete_mask = 0x8,
227 __incomplete_class_mask = 0x10
231 __pbase_type_info(const __pbase_type_info&);
234 operator=(const __pbase_type_info&);
236 // Implementation defined member functions.
238 __do_catch(const std::type_info* __thr_type, void** __thr_obj,
239 unsigned int __outer) const;
242 __pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
243 unsigned __outer) const;
246 // Type information for simple pointers.
247 class __pointer_type_info : public __pbase_type_info
251 __pointer_type_info(const char* __n, int __quals,
252 const std::type_info* __type)
253 : __pbase_type_info (__n, __quals, __type) { }
257 ~__pointer_type_info();
260 // Implementation defined member functions.
262 __is_pointer_p() const;
265 __pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
266 unsigned __outer) const;
269 class __class_type_info;
271 // Type information for a pointer to member variable.
272 class __pointer_to_member_type_info : public __pbase_type_info
275 __class_type_info* __context; // Class of the member.
278 __pointer_to_member_type_info(const char* __n, int __quals,
279 const std::type_info* __type,
280 __class_type_info* __klass)
281 : __pbase_type_info(__n, __quals, __type), __context(__klass) { }
284 ~__pointer_to_member_type_info();
287 __pointer_to_member_type_info(const __pointer_to_member_type_info&);
289 __pointer_to_member_type_info&
290 operator=(const __pointer_to_member_type_info&);
292 // Implementation defined member function.
294 __pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
295 unsigned __outer) const;
298 // Helper class for __vmi_class_type.
299 class __base_class_type_info
302 const __class_type_info* __base_type; // Base class type.
303 long __offset_flags; // Offset and info.
305 enum __offset_flags_masks
307 __virtual_mask = 0x1,
310 __offset_shift = 8 // Bits to shift offset.
313 // Implementation defined member functions.
315 __is_virtual_p() const
316 { return __offset_flags & __virtual_mask; }
319 __is_public_p() const
320 { return __offset_flags & __public_mask; }
325 // This shift, being of a signed type, is implementation
326 // defined. GCC implements such shifts as arithmetic, which is
328 return static_cast<ptrdiff_t>(__offset_flags) >> __offset_shift;
332 // Type information for a class.
333 class __class_type_info : public std::type_info
337 __class_type_info (const char *__n) : type_info(__n) { }
340 ~__class_type_info ();
342 // Implementation defined types.
343 // The type sub_kind tells us about how a base object is contained
344 // within a derived object. We often do this lazily, hence the
345 // UNKNOWN value. At other times we may use NOT_CONTAINED to mean
346 // not publicly contained.
352 // Not contained within us (in some circumstances this might
353 // mean not contained publicly)
356 // Contained ambiguously.
359 // Via a virtual path.
360 __contained_virtual_mask = __base_class_type_info::__virtual_mask,
362 // Via a public path.
363 __contained_public_mask = __base_class_type_info::__public_mask,
365 // Contained within us.
366 __contained_mask = 1 << __base_class_type_info::__hwm_bit,
368 __contained_private = __contained_mask,
369 __contained_public = __contained_mask | __contained_public_mask
372 struct __upcast_result;
373 struct __dyncast_result;
376 // Implementation defined member functions.
378 __do_upcast(const __class_type_info* __dst_type, void**__obj_ptr) const;
381 __do_catch(const type_info* __thr_type, void** __thr_obj,
382 unsigned __outer) const;
385 // Helper for upcast. See if DST is us, or one of our bases.
386 // Return false if not found, true if found.
388 __do_upcast(const __class_type_info* __dst, const void* __obj,
389 __upcast_result& __restrict __result) const;
391 // Indicate whether SRC_PTR of type SRC_TYPE is contained publicly
392 // within OBJ_PTR. OBJ_PTR points to a base object of our type,
393 // which is the destination type. SRC2DST indicates how SRC
394 // objects might be contained within this type. If SRC_PTR is one
395 // of our SRC_TYPE bases, indicate the virtuality. Returns
396 // not_contained for non containment or private containment.
398 __find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
399 const __class_type_info* __src_type,
400 const void* __src_ptr) const;
402 // Helper for dynamic cast. ACCESS_PATH gives the access from the
403 // most derived object to this base. DST_TYPE indicates the
404 // desired type we want. OBJ_PTR points to a base of our type
405 // within the complete object. SRC_TYPE indicates the static type
406 // started from and SRC_PTR points to that base within the most
407 // derived object. Fill in RESULT with what we find. Return true
408 // if we have located an ambiguous match.
410 __do_dyncast(ptrdiff_t __src2dst, __sub_kind __access_path,
411 const __class_type_info* __dst_type, const void* __obj_ptr,
412 const __class_type_info* __src_type, const void* __src_ptr,
413 __dyncast_result& __result) const;
415 // Helper for find_public_subobj. SRC2DST indicates how SRC_TYPE
416 // bases are inherited by the type started from -- which is not
417 // necessarily the current type. The current type will be a base
418 // of the destination type. OBJ_PTR points to the current base.
420 __do_find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
421 const __class_type_info* __src_type,
422 const void* __src_ptr) const;
425 // Type information for a class with a single non-virtual base.
426 class __si_class_type_info : public __class_type_info
429 const __class_type_info* __base_type;
432 __si_class_type_info(const char *__n, const __class_type_info *__base)
433 : __class_type_info(__n), __base_type(__base) { }
436 ~__si_class_type_info();
439 __si_class_type_info(const __si_class_type_info&);
441 __si_class_type_info&
442 operator=(const __si_class_type_info&);
444 // Implementation defined member functions.
446 __do_dyncast(ptrdiff_t __src2dst, __sub_kind __access_path,
447 const __class_type_info* __dst_type, const void* __obj_ptr,
448 const __class_type_info* __src_type, const void* __src_ptr,
449 __dyncast_result& __result) const;
452 __do_find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
453 const __class_type_info* __src_type,
454 const void* __sub_ptr) const;
457 __do_upcast(const __class_type_info*__dst, const void*__obj,
458 __upcast_result& __restrict __result) const;
461 // Type information for a class with multiple and/or virtual bases.
462 class __vmi_class_type_info : public __class_type_info
465 unsigned int __flags; // Details about the class hierarchy.
466 unsigned int __base_count; // Dumber of direct bases.
468 // The array of bases uses the trailing array struct hack so this
469 // class is not constructable with a normal constructor. It is
470 // internally generated by the compiler.
471 __base_class_type_info __base_info[1]; // Array of bases.
474 __vmi_class_type_info(const char* __n, int ___flags)
475 : __class_type_info(__n), __flags(___flags), __base_count(0) { }
478 ~__vmi_class_type_info();
480 // Implementation defined types.
483 __non_diamond_repeat_mask = 0x1, // Distinct instance of repeated base.
484 __diamond_shaped_mask = 0x2, // Diamond shaped multiple inheritance.
485 __flags_unknown_mask = 0x10
489 // Implementation defined member functions.
491 __do_dyncast(ptrdiff_t __src2dst, __sub_kind __access_path,
492 const __class_type_info* __dst_type, const void* __obj_ptr,
493 const __class_type_info* __src_type, const void* __src_ptr,
494 __dyncast_result& __result) const;
497 __do_find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
498 const __class_type_info* __src_type,
499 const void* __src_ptr) const;
502 __do_upcast(const __class_type_info* __dst, const void* __obj,
503 __upcast_result& __restrict __result) const;
506 // Dynamic cast runtime.
507 // src2dst has the following possible values
508 // >-1: src_type is a unique public non-virtual base of dst_type
509 // dst_ptr + src2dst == src_ptr
510 // -1: unspecified relationship
511 // -2: src_type is not a public base of dst_type
512 // -3: src_type is a multiple public non-virtual base of dst_type
514 __dynamic_cast(const void* __src_ptr, // Starting object.
515 const __class_type_info* __src_type, // Static type of object.
516 const __class_type_info* __dst_type, // Desired target type.
517 ptrdiff_t __src2dst); // How src and dst are related.
520 // Returns the type_info for the currently handled exception [15.3/8], or
521 // null if there is none.
522 extern "C" std::type_info*
523 __cxa_current_exception_type();
524 } // namespace __cxxabiv1
526 // User programs should use the alias `abi'.
527 namespace abi = __cxxabiv1;
529 #endif // __cplusplus
531 #pragma GCC visibility pop