Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
// New abi Support -*- C++ -*-

// Copyright (C) 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
//  
// This file is part of GCC.
//
// GCC is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.

// GCC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING.  If not, write to
// the Free Software Foundation, 51 Franklin Street, Fifth Floor,
// Boston, MA 02110-1301, USA. 

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

// Written by Nathan Sidwell, Codesourcery LLC, <nathan@codesourcery.com>

#include <cxxabi.h>
#include <new>
#include <exception>
#include <exception_defines.h>
#include "unwind-cxx.h"

namespace __cxxabiv1
{
  namespace 
  {
    struct uncatch_exception 
    {
      uncatch_exception();
      ~uncatch_exception () { __cxa_begin_catch (&p->unwindHeader); }
      
      __cxa_exception* p;

    private:
      uncatch_exception&
      operator=(const uncatch_exception&);

      uncatch_exception(const uncatch_exception&);
    };

    uncatch_exception::uncatch_exception() : p(0)
    {
      __cxa_eh_globals *globals = __cxa_get_globals_fast ();

      p = globals->caughtExceptions;
      p->handlerCount -= 1;
      globals->caughtExceptions = p->nextException;
      globals->uncaughtExceptions += 1;
    }
  }

  // Allocate and construct array.
  extern "C" void *
  __cxa_vec_new(std::size_t element_count,
		std::size_t element_size,
		std::size_t padding_size,
		__cxa_cdtor_type constructor,
		__cxa_cdtor_type destructor)
  {
    return __cxa_vec_new2(element_count, element_size, padding_size,
			   constructor, destructor,
			   &operator new[], &operator delete []);
  }

  extern "C" void *
  __cxa_vec_new2(std::size_t element_count,
		 std::size_t element_size,
		 std::size_t padding_size,
		 __cxa_cdtor_type constructor,
		 __cxa_cdtor_type destructor,
		 void *(*alloc) (std::size_t),
		 void (*dealloc) (void *))
  {
    std::size_t size = element_count * element_size + padding_size;
    char *base = static_cast <char *> (alloc (size));
    if (!base)
      return base;

    if (padding_size)
      {
	base += padding_size;
	reinterpret_cast <std::size_t *> (base)[-1] = element_count;
#ifdef _GLIBCXX_ELTSIZE_IN_COOKIE
	reinterpret_cast <std::size_t *> (base)[-2] = element_size;
#endif
      }
    try
      {
	__cxa_vec_ctor(base, element_count, element_size,
		       constructor, destructor);
      }
    catch (...)
      {
	{
	  uncatch_exception ue;
	  dealloc(base - padding_size);
	}
	__throw_exception_again;
      }
    return base;
  }
  
  extern "C" void *
  __cxa_vec_new3(std::size_t element_count,
		 std::size_t element_size,
		 std::size_t padding_size,
		 __cxa_cdtor_type constructor,
		 __cxa_cdtor_type destructor,
		 void *(*alloc) (std::size_t),
		 void (*dealloc) (void *, std::size_t))
  {
    std::size_t size = element_count * element_size + padding_size;
    char *base = static_cast<char *>(alloc (size));
    if (!base)
      return base;
    
    if (padding_size)
      {
	base += padding_size;
	reinterpret_cast<std::size_t *>(base)[-1] = element_count;
#ifdef _GLIBCXX_ELTSIZE_IN_COOKIE
	reinterpret_cast <std::size_t *> (base)[-2] = element_size;
#endif
      }
    try
      {
	__cxa_vec_ctor(base, element_count, element_size,
		       constructor, destructor);
      }
    catch (...)
      {
	{
	  uncatch_exception ue;
	  dealloc(base - padding_size, size);
	}
	__throw_exception_again;
      }
    return base;
  }
  
  // Construct array.
  extern "C" __cxa_vec_ctor_return_type
  __cxa_vec_ctor(void *array_address,
		 std::size_t element_count,
		 std::size_t element_size,
		 __cxa_cdtor_type constructor,
		 __cxa_cdtor_type destructor)
  {
    std::size_t ix = 0;
    char *ptr = static_cast<char *>(array_address);
    
    try
      {
	if (constructor)
	  for (; ix != element_count; ix++, ptr += element_size)
	    constructor(ptr);
      }
    catch (...)
      {
	{
	  uncatch_exception ue;
	  __cxa_vec_cleanup(array_address, ix, element_size, destructor);
	}
	__throw_exception_again;
      }
    _GLIBCXX_CXA_VEC_CTOR_RETURN (array_address);
  }
  
  // Construct an array by copying.
  extern "C" __cxa_vec_ctor_return_type
  __cxa_vec_cctor(void *dest_array,
		  void *src_array,
		  std::size_t element_count,
		  std::size_t element_size,
		  __cxa_cdtor_return_type (*constructor) (void *, void *),
		  __cxa_cdtor_type destructor)
  {
    std::size_t ix = 0;
    char *dest_ptr = static_cast<char *>(dest_array);
    char *src_ptr = static_cast<char *>(src_array);
    
    try
      {
	if (constructor)
	  for (; ix != element_count; 
	       ix++, src_ptr += element_size, dest_ptr += element_size)
	    constructor(dest_ptr, src_ptr);
      }
    catch (...)
      {
	{
	  uncatch_exception ue;
	  __cxa_vec_cleanup(dest_array, ix, element_size, destructor);
	}
	__throw_exception_again;
      }
    _GLIBCXX_CXA_VEC_CTOR_RETURN (dest_array);
  }
  
  // Destruct array.
  extern "C" void
  __cxa_vec_dtor(void *array_address,
		 std::size_t element_count,
		 std::size_t element_size,
		 __cxa_cdtor_type destructor)
  {
    if (destructor)
      {
	char *ptr = static_cast<char *>(array_address);
	std::size_t ix = element_count;

	ptr += element_count * element_size;

	try
	  {
	    while (ix--)
	      {
		ptr -= element_size;
		destructor(ptr);
	      }
	  }
	catch (...)
	  {
	    {
	      uncatch_exception ue;
	      __cxa_vec_cleanup(array_address, ix, element_size, destructor);
	    }
	    __throw_exception_again;
	  }
      }
  }

  // Destruct array as a result of throwing an exception.
  // [except.ctor]/3 If a destructor called during stack unwinding
  // exits with an exception, terminate is called.
  extern "C" void
  __cxa_vec_cleanup(void *array_address,
		    std::size_t element_count,
		    std::size_t element_size,
		    __cxa_cdtor_type destructor)
  {
    if (destructor)
      {
	char *ptr = static_cast <char *> (array_address);
	std::size_t ix = element_count;

	ptr += element_count * element_size;

	try
	  {
	    while (ix--)
	      {
		ptr -= element_size;
		destructor(ptr);
	      }
	  }
	catch (...)
	  {
	    std::terminate();
	  }
      }
  }

  // Destruct and release array.
  extern "C" void
  __cxa_vec_delete(void *array_address,
		   std::size_t element_size,
		   std::size_t padding_size,
		   __cxa_cdtor_type destructor)
  {
    __cxa_vec_delete2(array_address, element_size, padding_size,
		       destructor,
		       &operator delete []);
  }

  extern "C" void
  __cxa_vec_delete2(void *array_address,
		    std::size_t element_size,
		    std::size_t padding_size,
		    __cxa_cdtor_type destructor,
		    void (*dealloc) (void *))
  {
    if (!array_address)
      return;

    char* base = static_cast<char *>(array_address);
  
    if (padding_size)
      {
	std::size_t element_count = reinterpret_cast<std::size_t *>(base)[-1];
	base -= padding_size;
	try
	  {
	    __cxa_vec_dtor(array_address, element_count, element_size,
			   destructor);
	  }
	catch (...)
	  {
	    {
	      uncatch_exception ue;
	      dealloc(base);
	    }
	    __throw_exception_again;
	  }
      }
    dealloc(base);
  }

  extern "C" void
  __cxa_vec_delete3(void *array_address,
		    std::size_t element_size,
		    std::size_t padding_size,
		     __cxa_cdtor_type destructor,
		    void (*dealloc) (void *, std::size_t))
  {
    if (!array_address)
      return;

    char* base = static_cast <char *> (array_address);
    std::size_t size = 0;

    if (padding_size)
      {
	std::size_t element_count = reinterpret_cast<std::size_t *> (base)[-1];
	base -= padding_size;
	size = element_count * element_size + padding_size;
	try
	  {
	    __cxa_vec_dtor(array_address, element_count, element_size,
			   destructor);
	  }
	catch (...)
	  {
	    {
	      uncatch_exception ue;
	      dealloc(base, size);
	    }
	    __throw_exception_again;
	  }
      }
    dealloc(base, size);
  }
} // namespace __cxxabiv1

#if defined(__arm__) && defined(__ARM_EABI__)

// The ARM C++ ABI requires that the library provide these additional
// helper functions.  There are placed in this file, despite being
// architecture-specifier, so that the compiler can inline the __cxa
// functions into these functions as appropriate.

namespace __aeabiv1
{
  extern "C" void *
  __aeabi_vec_ctor_nocookie_nodtor (void *array_address,
				    abi::__cxa_cdtor_type constructor,
				    std::size_t element_size,
				    std::size_t element_count)
  {
    return abi::__cxa_vec_ctor (array_address, element_count, element_size,
				constructor, /*destructor=*/NULL);
  }

  extern "C" void *
  __aeabi_vec_ctor_cookie_nodtor (void *array_address,
				  abi::__cxa_cdtor_type constructor,
				  std::size_t element_size,
				  std::size_t element_count)
  {
    if (array_address == NULL)
      return NULL;

    array_address = reinterpret_cast<std::size_t *>(array_address) + 2;
    reinterpret_cast<std::size_t *>(array_address)[-2] = element_size;
    reinterpret_cast<std::size_t *>(array_address)[-1] = element_count;
    return abi::__cxa_vec_ctor (array_address,
				element_count, element_size, 
				constructor, /*destructor=*/NULL);
  }
  
  extern "C" void *
  __aeabi_vec_cctor_nocookie_nodtor (void *dest_array,
				     void *src_array, 
				     std::size_t element_size, 
				     std::size_t element_count,
				     void *(*constructor) (void *, void *))
  {
    return abi::__cxa_vec_cctor (dest_array, src_array,
				 element_count, element_size,
				 constructor, NULL);
  }

  extern "C" void *
  __aeabi_vec_new_cookie_noctor (std::size_t element_size, 
				 std::size_t element_count)
  {
    return abi::__cxa_vec_new(element_count, element_size, 
			      2 * sizeof (std::size_t),
			      /*constructor=*/NULL, /*destructor=*/NULL);
  }

  extern "C" void *
  __aeabi_vec_new_nocookie (std::size_t element_size, 
			    std::size_t element_count,
			    abi::__cxa_cdtor_type constructor)
  {
    return abi::__cxa_vec_new (element_count, element_size, 0, constructor, 
			       NULL);
  }

  extern "C" void *
  __aeabi_vec_new_cookie_nodtor (std::size_t element_size, 
				 std::size_t element_count,
				 abi::__cxa_cdtor_type constructor)
  {
    return abi::__cxa_vec_new(element_count, element_size, 
			      2 * sizeof (std::size_t),
			      constructor, NULL);
  }

  extern "C" void *
  __aeabi_vec_new_cookie(std::size_t element_size, 
			 std::size_t element_count,
			 abi::__cxa_cdtor_type constructor,
			 abi::__cxa_cdtor_type destructor)
  {
    return abi::__cxa_vec_new (element_count, element_size, 
			       2 * sizeof (std::size_t),
			       constructor, destructor);
  }

  
  extern "C" void *
  __aeabi_vec_dtor (void *array_address, 
		    abi::__cxa_cdtor_type destructor,
		    std::size_t element_size, 
		    std::size_t element_count)
  {
    abi::__cxa_vec_dtor (array_address, element_count, element_size, 
			 destructor);
    return reinterpret_cast<std::size_t*> (array_address) - 2;
  }

  extern "C" void *
  __aeabi_vec_dtor_cookie (void *array_address, 
			   abi::__cxa_cdtor_type destructor)
  {
    abi::__cxa_vec_dtor (array_address, 
			 reinterpret_cast<std::size_t *>(array_address)[-1],
			 reinterpret_cast<std::size_t *>(array_address)[-2],
			 destructor);
    return reinterpret_cast<std::size_t*> (array_address) - 2;
  }
  
  
  extern "C" void
  __aeabi_vec_delete (void *array_address, 
		      abi::__cxa_cdtor_type destructor)
  {
    abi::__cxa_vec_delete (array_address,
			   reinterpret_cast<std::size_t *>(array_address)[-2],
			   2 * sizeof (std::size_t),
			   destructor);
  }

  extern "C" void
  __aeabi_vec_delete3 (void *array_address, 
		       abi::__cxa_cdtor_type destructor,
		       void (*dealloc) (void *, std::size_t))
  {
    abi::__cxa_vec_delete3 (array_address,
			    reinterpret_cast<std::size_t *>(array_address)[-2],
			    2 * sizeof (std::size_t),
			    destructor, dealloc);
  }

  extern "C" void
  __aeabi_vec_delete3_nodtor (void *array_address,
			      void (*dealloc) (void *, std::size_t))
  {
    abi::__cxa_vec_delete3 (array_address,
			    reinterpret_cast<std::size_t *>(array_address)[-2],
			    2 * sizeof (std::size_t),
			    /*destructor=*/NULL, dealloc);
  }
  
  extern "C" int
  __aeabi_atexit (void *object, 
		  void (*destructor) (void *),
		  void *dso_handle)
  {
    return abi::__cxa_atexit(destructor, object, dso_handle);
  }
} // namespace __aeabiv1

#endif // defined(__arm__) && defined(__ARM_EABI__)