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. */
56 __cxa_vec_new(size_t __element_count, size_t __element_size,
57 size_t __padding_size, void (*__constructor) (void*),
58 void (*__destructor) (void*));
61 __cxa_vec_new2(size_t __element_count, size_t __element_size,
62 size_t __padding_size, void (*__constructor) (void*),
63 void (*__destructor) (void*), void *(*__alloc) (size_t),
64 void (*__dealloc) (void*));
67 __cxa_vec_new3(size_t __element_count, size_t __element_size,
68 size_t __padding_size, void (*__constructor) (void*),
69 void (*__destructor) (void*), void *(*__alloc) (size_t),
70 void (*__dealloc) (void*, size_t));
74 __cxa_vec_ctor(void* __array_address, size_t __element_count,
75 size_t __element_size, void (*__constructor) (void*),
76 void (*__destructor) (void*));
79 __cxa_vec_cctor(void* dest_array, void* src_array, size_t element_count,
80 size_t element_size, void (*constructor) (void*, void*),
81 void (*destructor) (void*));
85 __cxa_vec_dtor(void* __array_address, size_t __element_count,
86 size_t __element_size, void (*__destructor) (void*));
89 __cxa_vec_cleanup(void* __array_address, size_t __element_count,
90 size_t __element_size, void (*__destructor) (void*));
92 // Destruct and release array.
94 __cxa_vec_delete(void* __array_address, size_t __element_size,
95 size_t __padding_size, void (*__destructor) (void*));
98 __cxa_vec_delete2(void* __array_address, size_t __element_size,
99 size_t __padding_size, void (*__destructor) (void*),
100 void (*__dealloc) (void*));
103 __cxa_vec_delete3(void* __array_address, size_t __element_size,
104 size_t __padding_size, void (*__destructor) (void*),
105 void (*__dealloc) (void*, size_t));
108 // The ARM EABI says this is a 32-bit type.
111 // The ABI requires a 64-bit type.
112 __extension__ typedef int __guard __attribute__((mode (__DI__)));
116 __cxa_guard_acquire(__guard*);
119 __cxa_guard_release(__guard*);
122 __cxa_guard_abort(__guard*);
124 // Pure virtual functions.
126 __cxa_pure_virtual(void);
128 // Exception handling.
137 __cxa_atexit(void (*)(void*), void*, void*);
140 __cxa_finalize(void*);
142 // Demangling routines.
144 __cxa_demangle(const char* __mangled_name, char* __output_buffer,
145 size_t* __length, int* __status);
148 } // namespace __cxxabiv1
157 // Type information for int, float etc.
158 class __fundamental_type_info : public std::type_info
162 __fundamental_type_info(const char* __n) : std::type_info(__n) { }
165 ~__fundamental_type_info();
168 // Type information for array objects.
169 class __array_type_info : public std::type_info
173 __array_type_info(const char* __n) : std::type_info(__n) { }
176 ~__array_type_info();
179 // Type information for functions (both member and non-member).
180 class __function_type_info : public std::type_info
184 __function_type_info(const char* __n) : std::type_info(__n) { }
187 ~__function_type_info();
190 // Implementation defined member function.
192 __is_function_p() const;
195 // Type information for enumerations.
196 class __enum_type_info : public std::type_info
200 __enum_type_info(const char* __n) : std::type_info(__n) { }
206 // Common type information for simple pointers and pointers to member.
207 class __pbase_type_info : public std::type_info
210 unsigned int __flags; // Qualification of the target object.
211 const std::type_info* __pointee; // Type of pointed to object.
214 __pbase_type_info(const char* __n, int __quals,
215 const std::type_info* __type)
216 : std::type_info(__n), __flags(__quals), __pointee(__type)
220 ~__pbase_type_info();
222 // Implementation defined type.
226 __volatile_mask = 0x2,
227 __restrict_mask = 0x4,
228 __incomplete_mask = 0x8,
229 __incomplete_class_mask = 0x10
233 __pbase_type_info(const __pbase_type_info&);
236 operator=(const __pbase_type_info&);
238 // Implementation defined member functions.
240 __do_catch(const std::type_info* __thr_type, void** __thr_obj,
241 unsigned int __outer) const;
244 __pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
245 unsigned __outer) const;
248 // Type information for simple pointers.
249 class __pointer_type_info : public __pbase_type_info
253 __pointer_type_info(const char* __n, int __quals,
254 const std::type_info* __type)
255 : __pbase_type_info (__n, __quals, __type) { }
259 ~__pointer_type_info();
262 // Implementation defined member functions.
264 __is_pointer_p() const;
267 __pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
268 unsigned __outer) const;
271 class __class_type_info;
273 // Type information for a pointer to member variable.
274 class __pointer_to_member_type_info : public __pbase_type_info
277 __class_type_info* __context; // Class of the member.
280 __pointer_to_member_type_info(const char* __n, int __quals,
281 const std::type_info* __type,
282 __class_type_info* __klass)
283 : __pbase_type_info(__n, __quals, __type), __context(__klass) { }
286 ~__pointer_to_member_type_info();
289 __pointer_to_member_type_info(const __pointer_to_member_type_info&);
291 __pointer_to_member_type_info&
292 operator=(const __pointer_to_member_type_info&);
294 // Implementation defined member function.
296 __pointer_catch(const __pbase_type_info* __thr_type, void** __thr_obj,
297 unsigned __outer) const;
300 // Helper class for __vmi_class_type.
301 class __base_class_type_info
304 const __class_type_info* __base_type; // Base class type.
305 long __offset_flags; // Offset and info.
307 enum __offset_flags_masks
309 __virtual_mask = 0x1,
312 __offset_shift = 8 // Bits to shift offset.
315 // Implementation defined member functions.
317 __is_virtual_p() const
318 { return __offset_flags & __virtual_mask; }
321 __is_public_p() const
322 { return __offset_flags & __public_mask; }
327 // This shift, being of a signed type, is implementation
328 // defined. GCC implements such shifts as arithmetic, which is
330 return static_cast<ptrdiff_t>(__offset_flags) >> __offset_shift;
334 // Type information for a class.
335 class __class_type_info : public std::type_info
339 __class_type_info (const char *__n) : type_info(__n) { }
342 ~__class_type_info ();
344 // Implementation defined types.
345 // The type sub_kind tells us about how a base object is contained
346 // within a derived object. We often do this lazily, hence the
347 // UNKNOWN value. At other times we may use NOT_CONTAINED to mean
348 // not publicly contained.
354 // Not contained within us (in some circumstances this might
355 // mean not contained publicly)
358 // Contained ambiguously.
361 // Via a virtual path.
362 __contained_virtual_mask = __base_class_type_info::__virtual_mask,
364 // Via a public path.
365 __contained_public_mask = __base_class_type_info::__public_mask,
367 // Contained within us.
368 __contained_mask = 1 << __base_class_type_info::__hwm_bit,
370 __contained_private = __contained_mask,
371 __contained_public = __contained_mask | __contained_public_mask
374 struct __upcast_result;
375 struct __dyncast_result;
378 // Implementation defined member functions.
380 __do_upcast(const __class_type_info* __dst_type, void**__obj_ptr) const;
383 __do_catch(const type_info* __thr_type, void** __thr_obj,
384 unsigned __outer) const;
387 // Helper for upcast. See if DST is us, or one of our bases.
388 // Return false if not found, true if found.
390 __do_upcast(const __class_type_info* __dst, const void* __obj,
391 __upcast_result& __restrict __result) const;
393 // Indicate whether SRC_PTR of type SRC_TYPE is contained publicly
394 // within OBJ_PTR. OBJ_PTR points to a base object of our type,
395 // which is the destination type. SRC2DST indicates how SRC
396 // objects might be contained within this type. If SRC_PTR is one
397 // of our SRC_TYPE bases, indicate the virtuality. Returns
398 // not_contained for non containment or private containment.
400 __find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
401 const __class_type_info* __src_type,
402 const void* __src_ptr) const;
404 // Helper for dynamic cast. ACCESS_PATH gives the access from the
405 // most derived object to this base. DST_TYPE indicates the
406 // desired type we want. OBJ_PTR points to a base of our type
407 // within the complete object. SRC_TYPE indicates the static type
408 // started from and SRC_PTR points to that base within the most
409 // derived object. Fill in RESULT with what we find. Return true
410 // if we have located an ambiguous match.
412 __do_dyncast(ptrdiff_t __src2dst, __sub_kind __access_path,
413 const __class_type_info* __dst_type, const void* __obj_ptr,
414 const __class_type_info* __src_type, const void* __src_ptr,
415 __dyncast_result& __result) const;
417 // Helper for find_public_subobj. SRC2DST indicates how SRC_TYPE
418 // bases are inherited by the type started from -- which is not
419 // necessarily the current type. The current type will be a base
420 // of the destination type. OBJ_PTR points to the current base.
422 __do_find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
423 const __class_type_info* __src_type,
424 const void* __src_ptr) const;
427 // Type information for a class with a single non-virtual base.
428 class __si_class_type_info : public __class_type_info
431 const __class_type_info* __base_type;
434 __si_class_type_info(const char *__n, const __class_type_info *__base)
435 : __class_type_info(__n), __base_type(__base) { }
438 ~__si_class_type_info();
441 __si_class_type_info(const __si_class_type_info&);
443 __si_class_type_info&
444 operator=(const __si_class_type_info&);
446 // Implementation defined member functions.
448 __do_dyncast(ptrdiff_t __src2dst, __sub_kind __access_path,
449 const __class_type_info* __dst_type, const void* __obj_ptr,
450 const __class_type_info* __src_type, const void* __src_ptr,
451 __dyncast_result& __result) const;
454 __do_find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
455 const __class_type_info* __src_type,
456 const void* __sub_ptr) const;
459 __do_upcast(const __class_type_info*__dst, const void*__obj,
460 __upcast_result& __restrict __result) const;
463 // Type information for a class with multiple and/or virtual bases.
464 class __vmi_class_type_info : public __class_type_info
467 unsigned int __flags; // Details about the class hierarchy.
468 unsigned int __base_count; // Dumber of direct bases.
470 // The array of bases uses the trailing array struct hack so this
471 // class is not constructable with a normal constructor. It is
472 // internally generated by the compiler.
473 __base_class_type_info __base_info[1]; // Array of bases.
476 __vmi_class_type_info(const char* __n, int ___flags)
477 : __class_type_info(__n), __flags(___flags), __base_count(0) { }
480 ~__vmi_class_type_info();
482 // Implementation defined types.
485 __non_diamond_repeat_mask = 0x1, // Distinct instance of repeated base.
486 __diamond_shaped_mask = 0x2, // Diamond shaped multiple inheritance.
487 __flags_unknown_mask = 0x10
491 // Implementation defined member functions.
493 __do_dyncast(ptrdiff_t __src2dst, __sub_kind __access_path,
494 const __class_type_info* __dst_type, const void* __obj_ptr,
495 const __class_type_info* __src_type, const void* __src_ptr,
496 __dyncast_result& __result) const;
499 __do_find_public_src(ptrdiff_t __src2dst, const void* __obj_ptr,
500 const __class_type_info* __src_type,
501 const void* __src_ptr) const;
504 __do_upcast(const __class_type_info* __dst, const void* __obj,
505 __upcast_result& __restrict __result) const;
508 // Dynamic cast runtime.
509 // src2dst has the following possible values
510 // >-1: src_type is a unique public non-virtual base of dst_type
511 // dst_ptr + src2dst == src_ptr
512 // -1: unspecified relationship
513 // -2: src_type is not a public base of dst_type
514 // -3: src_type is a multiple public non-virtual base of dst_type
516 __dynamic_cast(const void* __src_ptr, // Starting object.
517 const __class_type_info* __src_type, // Static type of object.
518 const __class_type_info* __dst_type, // Desired target type.
519 ptrdiff_t __src2dst); // How src and dst are related.
522 // Returns the type_info for the currently handled exception [15.3/8], or
523 // null if there is none.
524 extern "C" std::type_info*
525 __cxa_current_exception_type();
526 } // namespace __cxxabiv1
528 // User programs should use the alias `abi'.
529 namespace abi = __cxxabiv1;
531 #endif // __cplusplus