1 // New abi Support -*- C++ -*-
3 // Copyright (C) 2000, 2001 Free Software Foundation, Inc.
5 // This file is part of GNU CC.
7 // GNU CC 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 // GNU CC 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 GNU CC; 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>
36 #include <exception_defines.h>
37 #include "unwind-cxx.h"
43 struct uncatch_exception
46 ~uncatch_exception () { __cxa_begin_catch (&p->unwindHeader); }
51 uncatch_exception::uncatch_exception ()
53 __cxa_eh_globals *globals = __cxa_get_globals_fast ();
55 p = globals->caughtExceptions;
57 globals->caughtExceptions = p->nextException;
58 globals->uncaughtExceptions += 1;
62 // Allocate and construct array.
64 __cxa_vec_new(std::size_t element_count,
65 std::size_t element_size,
66 std::size_t padding_size,
67 void (*constructor) (void *),
68 void (*destructor) (void *))
70 return __cxa_vec_new2(element_count, element_size, padding_size,
71 constructor, destructor,
72 &operator new[], &operator delete []);
76 __cxa_vec_new2(std::size_t element_count,
77 std::size_t element_size,
78 std::size_t padding_size,
79 void (*constructor) (void *),
80 void (*destructor) (void *),
81 void *(*alloc) (std::size_t),
82 void (*dealloc) (void *))
84 std::size_t size = element_count * element_size + padding_size;
85 char *base = static_cast <char *> (alloc (size));
90 reinterpret_cast <std::size_t *> (base)[-1] = element_count;
94 __cxa_vec_ctor(base, element_count, element_size,
95 constructor, destructor);
100 uncatch_exception ue;
101 dealloc(base - padding_size);
103 __throw_exception_again;
109 __cxa_vec_new3(std::size_t element_count,
110 std::size_t element_size,
111 std::size_t padding_size,
112 void (*constructor) (void *),
113 void (*destructor) (void *),
114 void *(*alloc) (std::size_t),
115 void (*dealloc) (void *, std::size_t))
117 std::size_t size = element_count * element_size + padding_size;
118 char *base = static_cast<char *>(alloc (size));
122 base += padding_size;
123 reinterpret_cast<std::size_t *>(base)[-1] = element_count;
127 __cxa_vec_ctor(base, element_count, element_size,
128 constructor, destructor);
133 uncatch_exception ue;
134 dealloc(base - padding_size, size);
136 __throw_exception_again;
143 __cxa_vec_ctor(void *array_address,
144 std::size_t element_count,
145 std::size_t element_size,
146 void (*constructor) (void *),
147 void (*destructor) (void *))
150 char *ptr = static_cast<char *>(array_address);
155 for (; ix != element_count; ix++, ptr += element_size)
161 uncatch_exception ue;
162 __cxa_vec_cleanup(array_address, ix, element_size, destructor);
164 __throw_exception_again;
168 // Construct an array by copying.
170 __cxa_vec_cctor(void *dest_array,
172 std::size_t element_count,
173 std::size_t element_size,
174 void (*constructor) (void *, void *),
175 void (*destructor) (void *))
178 char *dest_ptr = static_cast<char *>(dest_array);
179 char *src_ptr = static_cast<char *>(src_array);
184 for (; ix != element_count;
185 ix++, src_ptr += element_size, dest_ptr += element_size)
186 constructor(dest_ptr, src_ptr);
191 uncatch_exception ue;
192 __cxa_vec_cleanup(dest_array, ix, element_size, destructor);
194 __throw_exception_again;
200 __cxa_vec_dtor(void *array_address,
201 std::size_t element_count,
202 std::size_t element_size,
203 void (*destructor) (void *))
207 char *ptr = static_cast<char *>(array_address);
208 std::size_t ix = element_count;
210 ptr += element_count * element_size;
223 uncatch_exception ue;
224 __cxa_vec_cleanup(array_address, ix, element_size, destructor);
226 __throw_exception_again;
231 // Destruct array as a result of throwing an exception.
232 // [except.ctor]/3 If a destructor called during stack unwinding
233 // exits with an exception, terminate is called.
235 __cxa_vec_cleanup(void *array_address,
236 std::size_t element_count,
237 std::size_t element_size,
238 void (*destructor) (void *))
242 char *ptr = static_cast <char *> (array_address);
243 std::size_t ix = element_count;
245 ptr += element_count * element_size;
262 // Destruct and release array.
264 __cxa_vec_delete(void *array_address,
265 std::size_t element_size,
266 std::size_t padding_size,
267 void (*destructor) (void *))
269 __cxa_vec_delete2(array_address, element_size, padding_size,
271 &operator delete []);
275 __cxa_vec_delete2(void *array_address,
276 std::size_t element_size,
277 std::size_t padding_size,
278 void (*destructor) (void *),
279 void (*dealloc) (void *))
281 char *base = static_cast<char *>(array_address);
285 std::size_t element_count = reinterpret_cast<std::size_t *>(base)[-1];
286 base -= padding_size;
289 __cxa_vec_dtor(array_address, element_count, element_size,
295 uncatch_exception ue;
298 __throw_exception_again;
305 __cxa_vec_delete3(void *array_address,
306 std::size_t element_size,
307 std::size_t padding_size,
308 void (*destructor) (void *),
309 void (*dealloc) (void *, std::size_t))
311 char *base = static_cast <char *> (array_address);
312 std::size_t size = 0;
316 std::size_t element_count = reinterpret_cast<std::size_t *> (base)[-1];
317 base -= padding_size;
318 size = element_count * element_size + padding_size;
321 __cxa_vec_dtor(array_address, element_count, element_size,
327 uncatch_exception ue;
330 __throw_exception_again;
335 } // namespace __cxxabiv1