lib/sdk/crt/except/cpp.c

   1 /*
   2  * msvcrt.dll C++ objects
   3  *
   4  * Copyright 2000 Jon Griffiths
   5  * Copyright 2003, 2004 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library 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 GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include <precomp.h>
  23
  24 #include <wine/exception.h>
  25 #include <internal/wine/msvcrt.h>
  26 #include <internal/wine/cppexcept.h>
  27
  28 typedef exception bad_cast;
  29 typedef exception bad_typeid;
  30 typedef exception __non_rtti_object;
  31
  32 typedef struct _rtti_base_descriptor
  33 {
  34   const type_info *type_descriptor;
  35   int num_base_classes;
  36   this_ptr_offsets offsets;    /* offsets for computing the this pointer */
  37   unsigned int attributes;
  38 } rtti_base_descriptor;
  39
  40 typedef struct _rtti_base_array
  41 {
  42   const rtti_base_descriptor *bases[3]; /* First element is the class itself */
  43 } rtti_base_array;
  44
  45 typedef struct _rtti_object_hierarchy
  46 {
  47   unsigned int signature;
  48   unsigned int attributes;
  49   int array_len; /* Size of the array pointed to by 'base_classes' */
  50   const rtti_base_array *base_classes;
  51 } rtti_object_hierarchy;
  52
  53 typedef struct _rtti_object_locator
  54 {
  55   unsigned int signature;
  56   int base_class_offset;
  57   unsigned int flags;
  58   const type_info *type_descriptor;
  59   const rtti_object_hierarchy *type_hierarchy;
  60 } rtti_object_locator;
  61
  62 #ifdef __i386__  /* thiscall functions are i386-specific */
  63
  64 #define THISCALL(func) __thiscall_ ## func
  65 #define THISCALL_NAME(func) __ASM_NAME("__thiscall_" #func)
  66 #define DEFINE_THISCALL_WRAPPER(func,args) \
  67     extern void THISCALL(func)(void); \
  68     __ASM_GLOBAL_FUNC(__thiscall_ ## func, \
  69                       "popl %eax\n\t" \
  70                       "pushl %ecx\n\t" \
  71                       "pushl %eax\n\t" \
  72                       "jmp " __ASM_NAME(#func) __ASM_STDCALL(args) )
  73 #else /* __i386__ */
  74
  75 #define THISCALL(func) func
  76 #define THISCALL_NAME(func) __ASM_NAME(#func)
  77 #define DEFINE_THISCALL_WRAPPER(func,args) /* nothing */
  78
  79 #endif /* __i386__ */
  80
  81 extern const vtable_ptr MSVCRT_exception_vtable;
  82 extern const vtable_ptr MSVCRT_bad_typeid_vtable;
  83 extern const vtable_ptr MSVCRT_bad_cast_vtable;
  84 extern const vtable_ptr MSVCRT___non_rtti_object_vtable;
  85 extern const vtable_ptr MSVCRT_type_info_vtable;
  86
  87 /* get the vtable pointer for a C++ object */
  88 static inline const vtable_ptr *get_vtable( void *obj )
  89 {
  90     return *(const vtable_ptr **)obj;
  91 }
  92
  93 static inline const rtti_object_locator *get_obj_locator( void *cppobj )
  94 {
  95     const vtable_ptr *vtable = get_vtable( cppobj );
  96     return (const rtti_object_locator *)vtable[-1];
  97 }
  98
  99 static void dump_obj_locator( const rtti_object_locator *ptr )
 100 {
 101     int i;
 102     const rtti_object_hierarchy *h = ptr->type_hierarchy;
 103
 104     TRACE( "%p: sig=%08x base_offset=%08x flags=%08x type=%p %s hierarchy=%p\n",
 105            ptr, ptr->signature, ptr->base_class_offset, ptr->flags,
 106            ptr->type_descriptor, dbgstr_type_info(ptr->type_descriptor), ptr->type_hierarchy );
 107     TRACE( "  hierarchy: sig=%08x attr=%08x len=%d base classes=%p\n",
 108            h->signature, h->attributes, h->array_len, h->base_classes );
 109     for (i = 0; i < h->array_len; i++)
 110     {
 111         TRACE( "    base class %p: num %d off %d,%d,%d attr %08x type %p %s\n",
 112                h->base_classes->bases[i],
 113                h->base_classes->bases[i]->num_base_classes,
 114                h->base_classes->bases[i]->offsets.this_offset,
 115                h->base_classes->bases[i]->offsets.vbase_descr,
 116                h->base_classes->bases[i]->offsets.vbase_offset,
 117                h->base_classes->bases[i]->attributes,
 118                h->base_classes->bases[i]->type_descriptor,
 119                dbgstr_type_info(h->base_classes->bases[i]->type_descriptor) );
 120     }
 121 }
 122
 123 /* Internal common ctor for exception */
 124 static void WINAPI EXCEPTION_ctor(exception *_this, const char** name)
 125 {
 126   _this->vtable = &MSVCRT_exception_vtable;
 127   if (*name)
 128   {
 129     unsigned int name_len = strlen(*name) + 1;
 130     _this->name = MSVCRT_malloc(name_len);
 131     memcpy(_this->name, *name, name_len);
 132     _this->do_free = TRUE;
 133   }
 134   else
 135   {
 136     _this->name = NULL;
 137     _this->do_free = FALSE;
 138   }
 139 }
 140
 141 /******************************************************************
 142  *              ??0exception@@QAE@ABQBD@Z (MSVCRT.@)
 143  */
 144 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_ctor,8)
 145 exception * __stdcall MSVCRT_exception_ctor(exception * _this, const char ** name)
 146 {
 147   TRACE("(%p,%s)\n", _this, *name);
 148   EXCEPTION_ctor(_this, name);
 149   return _this;
 150 }
 151
 152 /******************************************************************
 153  *              ??0exception@@QAE@ABQBDH@Z (MSVCRT.@)
 154  */
 155 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_ctor_noalloc,12)
 156 exception * __stdcall MSVCRT_exception_ctor_noalloc(exception * _this, char ** name, int noalloc)
 157 {
 158   TRACE("(%p,%s)\n", _this, *name);
 159   _this->vtable = &MSVCRT_exception_vtable;
 160   _this->name = *name;
 161   _this->do_free = FALSE;
 162   return _this;
 163 }
 164
 165 /******************************************************************
 166  *              ??0exception@@QAE@ABV0@@Z (MSVCRT.@)
 167  */
 168 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_copy_ctor,8)
 169 exception * __stdcall MSVCRT_exception_copy_ctor(exception * _this, const exception * rhs)
 170 {
 171   TRACE("(%p,%p)\n", _this, rhs);
 172
 173   if (!rhs->do_free)
 174   {
 175     _this->vtable = &MSVCRT_exception_vtable;
 176     _this->name = rhs->name;
 177     _this->do_free = FALSE;
 178   }
 179   else
 180     EXCEPTION_ctor(_this, (const char**)&rhs->name);
 181   TRACE("name = %s\n", _this->name);
 182   return _this;
 183 }
 184
 185 /******************************************************************
 186  *              ??0exception@@QAE@XZ (MSVCRT.@)
 187  */
 188 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_default_ctor,4)
 189 exception * __stdcall MSVCRT_exception_default_ctor(exception * _this)
 190 {
 191   static const char* empty = NULL;
 192
 193   TRACE("(%p)\n", _this);
 194   EXCEPTION_ctor(_this, &empty);
 195   return _this;
 196 }
 197
 198 /******************************************************************
 199  *              ??1exception@@UAE@XZ (MSVCRT.@)
 200  */
 201 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_dtor,4)
 202 void __stdcall MSVCRT_exception_dtor(exception * _this)
 203 {
 204   TRACE("(%p)\n", _this);
 205   _this->vtable = &MSVCRT_exception_vtable;
 206   if (_this->do_free) MSVCRT_free(_this->name);
 207 }
 208
 209 /******************************************************************
 210  *              ??4exception@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 211  */
 212 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_opequals,8)
 213 exception * __stdcall MSVCRT_exception_opequals(exception * _this, const exception * rhs)
 214 {
 215   TRACE("(%p %p)\n", _this, rhs);
 216   if (_this != rhs)
 217   {
 218       MSVCRT_exception_dtor(_this);
 219       MSVCRT_exception_copy_ctor(_this, rhs);
 220   }
 221   TRACE("name = %s\n", _this->name);
 222   return _this;
 223 }
 224
 225 /******************************************************************
 226  *              ??_Eexception@@UAEPAXI@Z (MSVCRT.@)
 227  */
 228 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_vector_dtor,8)
 229 void * __stdcall MSVCRT_exception_vector_dtor(exception * _this, unsigned int flags)
 230 {
 231     TRACE("(%p %x)\n", _this, flags);
 232     if (flags & 2)
 233     {
 234         /* we have an array, with the number of elements stored before the first object */
 235         int i, *ptr = (int *)_this - 1;
 236
 237         for (i = *ptr - 1; i >= 0; i--) MSVCRT_exception_dtor(_this + i);
 238         MSVCRT_operator_delete(ptr);
 239     }
 240     else
 241     {
 242         MSVCRT_exception_dtor(_this);
 243         if (flags & 1) MSVCRT_operator_delete(_this);
 244     }
 245     return _this;
 246 }
 247
 248 /******************************************************************
 249  *              ??_Gexception@@UAEPAXI@Z (MSVCRT.@)
 250  */
 251 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_scalar_dtor,8)
 252 void * __stdcall MSVCRT_exception_scalar_dtor(exception * _this, unsigned int flags)
 253 {
 254     TRACE("(%p %x)\n", _this, flags);
 255     MSVCRT_exception_dtor(_this);
 256     if (flags & 1) MSVCRT_operator_delete(_this);
 257     return _this;
 258 }
 259
 260 /******************************************************************
 261  *              ?what@exception@@UBEPBDXZ (MSVCRT.@)
 262  */
 263 DEFINE_THISCALL_WRAPPER(MSVCRT_what_exception,4)
 264 const char * __stdcall MSVCRT_what_exception(exception * _this)
 265 {
 266   TRACE("(%p) returning %s\n", _this, _this->name);
 267   return _this->name ? _this->name : "Unknown exception";
 268 }
 269
 270 /******************************************************************
 271  *              ??0bad_typeid@@QAE@ABV0@@Z (MSVCRT.@)
 272  */
 273 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_copy_ctor,8)
 274 bad_typeid * __stdcall MSVCRT_bad_typeid_copy_ctor(bad_typeid * _this, const bad_typeid * rhs)
 275 {
 276   TRACE("(%p %p)\n", _this, rhs);
 277   MSVCRT_exception_copy_ctor(_this, rhs);
 278   _this->vtable = &MSVCRT_bad_typeid_vtable;
 279   return _this;
 280 }
 281
 282 /******************************************************************
 283  *              ??0bad_typeid@@QAE@PBD@Z (MSVCRT.@)
 284  */
 285 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_ctor,8)
 286 bad_typeid * __stdcall MSVCRT_bad_typeid_ctor(bad_typeid * _this, const char * name)
 287 {
 288   TRACE("(%p %s)\n", _this, name);
 289   EXCEPTION_ctor(_this, &name);
 290   _this->vtable = &MSVCRT_bad_typeid_vtable;
 291   return _this;
 292 }
 293
 294 /******************************************************************
 295  *              ??_Fbad_typeid@@QAEXXZ (MSVCRT.@)
 296  */
 297 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_default_ctor,4)
 298 bad_typeid * __stdcall MSVCRT_bad_typeid_default_ctor(bad_typeid * _this)
 299 {
 300   return MSVCRT_bad_typeid_ctor( _this, "bad typeid" );
 301 }
 302
 303 /******************************************************************
 304  *              ??1bad_typeid@@UAE@XZ (MSVCRT.@)
 305  */
 306 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_dtor,4)
 307 void __stdcall MSVCRT_bad_typeid_dtor(bad_typeid * _this)
 308 {
 309   TRACE("(%p)\n", _this);
 310   MSVCRT_exception_dtor(_this);
 311 }
 312
 313 /******************************************************************
 314  *              ??4bad_typeid@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 315  */
 316 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_opequals,8)
 317 bad_typeid * __stdcall MSVCRT_bad_typeid_opequals(bad_typeid * _this, const bad_typeid * rhs)
 318 {
 319   TRACE("(%p %p)\n", _this, rhs);
 320   MSVCRT_exception_opequals(_this, rhs);
 321   return _this;
 322 }
 323
 324 /******************************************************************
 325  *              ??_Ebad_typeid@@UAEPAXI@Z (MSVCRT.@)
 326  */
 327 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_vector_dtor,8)
 328 void * __stdcall MSVCRT_bad_typeid_vector_dtor(bad_typeid * _this, unsigned int flags)
 329 {
 330     TRACE("(%p %x)\n", _this, flags);
 331     if (flags & 2)
 332     {
 333         /* we have an array, with the number of elements stored before the first object */
 334         int i, *ptr = (int *)_this - 1;
 335
 336         for (i = *ptr - 1; i >= 0; i--) MSVCRT_bad_typeid_dtor(_this + i);
 337         MSVCRT_operator_delete(ptr);
 338     }
 339     else
 340     {
 341         MSVCRT_bad_typeid_dtor(_this);
 342         if (flags & 1) MSVCRT_operator_delete(_this);
 343     }
 344     return _this;
 345 }
 346
 347 /******************************************************************
 348  *              ??_Gbad_typeid@@UAEPAXI@Z (MSVCRT.@)
 349  */
 350 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_scalar_dtor,8)
 351 void * __stdcall MSVCRT_bad_typeid_scalar_dtor(bad_typeid * _this, unsigned int flags)
 352 {
 353     TRACE("(%p %x)\n", _this, flags);
 354     MSVCRT_bad_typeid_dtor(_this);
 355     if (flags & 1) MSVCRT_operator_delete(_this);
 356     return _this;
 357 }
 358
 359 /******************************************************************
 360  *              ??0__non_rtti_object@@QAE@ABV0@@Z (MSVCRT.@)
 361  */
 362 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_copy_ctor,8)
 363 __non_rtti_object * __stdcall MSVCRT___non_rtti_object_copy_ctor(__non_rtti_object * _this,
 364                                                                  const __non_rtti_object * rhs)
 365 {
 366   TRACE("(%p %p)\n", _this, rhs);
 367   MSVCRT_bad_typeid_copy_ctor(_this, rhs);
 368   _this->vtable = &MSVCRT___non_rtti_object_vtable;
 369   return _this;
 370 }
 371
 372 /******************************************************************
 373  *              ??0__non_rtti_object@@QAE@PBD@Z (MSVCRT.@)
 374  */
 375 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_ctor,8)
 376 __non_rtti_object * __stdcall MSVCRT___non_rtti_object_ctor(__non_rtti_object * _this,
 377                                                             const char * name)
 378 {
 379   TRACE("(%p %s)\n", _this, name);
 380   EXCEPTION_ctor(_this, &name);
 381   _this->vtable = &MSVCRT___non_rtti_object_vtable;
 382   return _this;
 383 }
 384
 385 /******************************************************************
 386  *              ??1__non_rtti_object@@UAE@XZ (MSVCRT.@)
 387  */
 388 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_dtor,4)
 389 void __stdcall MSVCRT___non_rtti_object_dtor(__non_rtti_object * _this)
 390 {
 391   TRACE("(%p)\n", _this);
 392   MSVCRT_bad_typeid_dtor(_this);
 393 }
 394
 395 /******************************************************************
 396  *              ??4__non_rtti_object@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 397  */
 398 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_opequals,8)
 399 __non_rtti_object * __stdcall MSVCRT___non_rtti_object_opequals(__non_rtti_object * _this,
 400                                                                 const __non_rtti_object *rhs)
 401 {
 402   TRACE("(%p %p)\n", _this, rhs);
 403   MSVCRT_bad_typeid_opequals(_this, rhs);
 404   return _this;
 405 }
 406
 407 /******************************************************************
 408  *              ??_E__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
 409  */
 410 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_vector_dtor,8)
 411 void * __stdcall MSVCRT___non_rtti_object_vector_dtor(__non_rtti_object * _this, unsigned int flags)
 412 {
 413     TRACE("(%p %x)\n", _this, flags);
 414     if (flags & 2)
 415     {
 416         /* we have an array, with the number of elements stored before the first object */
 417         int i, *ptr = (int *)_this - 1;
 418
 419         for (i = *ptr - 1; i >= 0; i--) MSVCRT___non_rtti_object_dtor(_this + i);
 420         MSVCRT_operator_delete(ptr);
 421     }
 422     else
 423     {
 424         MSVCRT___non_rtti_object_dtor(_this);
 425         if (flags & 1) MSVCRT_operator_delete(_this);
 426     }
 427     return _this;
 428 }
 429
 430 /******************************************************************
 431  *              ??_G__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
 432  */
 433 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_scalar_dtor,8)
 434 void * __stdcall MSVCRT___non_rtti_object_scalar_dtor(__non_rtti_object * _this, unsigned int flags)
 435 {
 436   TRACE("(%p %x)\n", _this, flags);
 437   MSVCRT___non_rtti_object_dtor(_this);
 438   if (flags & 1) MSVCRT_operator_delete(_this);
 439   return _this;
 440 }
 441
 442 /******************************************************************
 443  *              ??0bad_cast@@AAE@PBQBD@Z (MSVCRT.@)
 444  *              ??0bad_cast@@QAE@ABQBD@Z (MSVCRT.@)
 445  */
 446 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor,8)
 447 bad_cast * __stdcall MSVCRT_bad_cast_ctor(bad_cast * _this, const char ** name)
 448 {
 449   TRACE("(%p %s)\n", _this, *name);
 450   EXCEPTION_ctor(_this, name);
 451   _this->vtable = &MSVCRT_bad_cast_vtable;
 452   return _this;
 453 }
 454
 455 /******************************************************************
 456  *              ??0bad_cast@@QAE@ABV0@@Z (MSVCRT.@)
 457  */
 458 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_copy_ctor,8)
 459 bad_cast * __stdcall MSVCRT_bad_cast_copy_ctor(bad_cast * _this, const bad_cast * rhs)
 460 {
 461   TRACE("(%p %p)\n", _this, rhs);
 462   MSVCRT_exception_copy_ctor(_this, rhs);
 463   _this->vtable = &MSVCRT_bad_cast_vtable;
 464   return _this;
 465 }
 466
 467 /******************************************************************
 468  *              ??0bad_cast@@QAE@PBD@Z (MSVCRT.@)
 469  */
 470 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor_charptr,8)
 471 bad_cast * __stdcall MSVCRT_bad_cast_ctor_charptr(bad_cast * _this, const char * name)
 472 {
 473   TRACE("(%p %s)\n", _this, name);
 474   EXCEPTION_ctor(_this, &name);
 475   _this->vtable = &MSVCRT_bad_cast_vtable;
 476   return _this;
 477 }
 478
 479 /******************************************************************
 480  *              ??_Fbad_cast@@QAEXXZ (MSVCRT.@)
 481  */
 482 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_default_ctor,4)
 483 bad_cast * __stdcall MSVCRT_bad_cast_default_ctor(bad_cast * _this)
 484 {
 485   return MSVCRT_bad_cast_ctor_charptr( _this, "bad cast" );
 486 }
 487
 488 /******************************************************************
 489  *              ??1bad_cast@@UAE@XZ (MSVCRT.@)
 490  */
 491 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_dtor,4)
 492 void __stdcall MSVCRT_bad_cast_dtor(bad_cast * _this)
 493 {
 494   TRACE("(%p)\n", _this);
 495   MSVCRT_exception_dtor(_this);
 496 }
 497
 498 /******************************************************************
 499  *              ??4bad_cast@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 500  */
 501 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_opequals,8)
 502 bad_cast * __stdcall MSVCRT_bad_cast_opequals(bad_cast * _this, const bad_cast * rhs)
 503 {
 504   TRACE("(%p %p)\n", _this, rhs);
 505   MSVCRT_exception_opequals(_this, rhs);
 506   return _this;
 507 }
 508
 509 /******************************************************************
 510  *              ??_Ebad_cast@@UAEPAXI@Z (MSVCRT.@)
 511  */
 512 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_vector_dtor,8)
 513 void * __stdcall MSVCRT_bad_cast_vector_dtor(bad_cast * _this, unsigned int flags)
 514 {
 515     TRACE("(%p %x)\n", _this, flags);
 516     if (flags & 2)
 517     {
 518         /* we have an array, with the number of elements stored before the first object */
 519         int i, *ptr = (int *)_this - 1;
 520
 521         for (i = *ptr - 1; i >= 0; i--) MSVCRT_bad_cast_dtor(_this + i);
 522         MSVCRT_operator_delete(ptr);
 523     }
 524     else
 525     {
 526         MSVCRT_bad_cast_dtor(_this);
 527         if (flags & 1) MSVCRT_operator_delete(_this);
 528     }
 529     return _this;
 530 }
 531
 532 /******************************************************************
 533  *              ??_Gbad_cast@@UAEPAXI@Z (MSVCRT.@)
 534  */
 535 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_scalar_dtor,8)
 536 void * __stdcall MSVCRT_bad_cast_scalar_dtor(bad_cast * _this, unsigned int flags)
 537 {
 538   TRACE("(%p %x)\n", _this, flags);
 539   MSVCRT_bad_cast_dtor(_this);
 540   if (flags & 1) MSVCRT_operator_delete(_this);
 541   return _this;
 542 }
 543
 544 /******************************************************************
 545  *              ??8type_info@@QBEHABV0@@Z (MSVCRT.@)
 546  */
 547 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_opequals_equals,8)
 548 int __stdcall MSVCRT_type_info_opequals_equals(type_info * _this, const type_info * rhs)
 549 {
 550     int ret = !strcmp(_this->mangled + 1, rhs->mangled + 1);
 551     TRACE("(%p %p) returning %d\n", _this, rhs, ret);
 552     return ret;
 553 }
 554
 555 /******************************************************************
 556  *              ??9type_info@@QBEHABV0@@Z (MSVCRT.@)
 557  */
 558 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_opnot_equals,8)
 559 int __stdcall MSVCRT_type_info_opnot_equals(type_info * _this, const type_info * rhs)
 560 {
 561     int ret = !!strcmp(_this->mangled + 1, rhs->mangled + 1);
 562     TRACE("(%p %p) returning %d\n", _this, rhs, ret);
 563     return ret;
 564 }
 565
 566 /******************************************************************
 567  *              ?before@type_info@@QBEHABV1@@Z (MSVCRT.@)
 568  */
 569 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_before,8)
 570 int __stdcall MSVCRT_type_info_before(type_info * _this, const type_info * rhs)
 571 {
 572     int ret = strcmp(_this->mangled + 1, rhs->mangled + 1) < 0;
 573     TRACE("(%p %p) returning %d\n", _this, rhs, ret);
 574     return ret;
 575 }
 576
 577 /******************************************************************
 578  *              ??1type_info@@UAE@XZ (MSVCRT.@)
 579  */
 580 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_dtor,4)
 581 void __stdcall MSVCRT_type_info_dtor(type_info * _this)
 582 {
 583   TRACE("(%p)\n", _this);
 584   MSVCRT_free(_this->name);
 585 }
 586
 587 /******************************************************************
 588  *              ?name@type_info@@QBEPBDXZ (MSVCRT.@)
 589  */
 590 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_name,4)
 591 const char * __stdcall MSVCRT_type_info_name(type_info * _this)
 592 {
 593   if (!_this->name)
 594   {
 595     /* Create and set the demangled name */
 596     /* Nota: mangled name in type_info struct always start with a '.', while
 597      * it isn't valid for mangled name.
 598      * Is this '.' really part of the mangled name, or has it some other meaning ?
 599      */
 600     char* name = __unDName(0, _this->mangled + 1, 0,
 601                            MSVCRT_malloc, MSVCRT_free, 0x2800);
 602
 603     if (name)
 604     {
 605       unsigned int len = strlen(name);
 606
 607       /* It seems _unDName may leave blanks at the end of the demangled name */
 608       while (len && name[--len] == ' ')
 609         name[len] = '\0';
 610
 611       _mlock(_EXIT_LOCK2);
 612
 613       if (_this->name)
 614       {
 615         /* Another thread set this member since we checked above - use it */
 616         MSVCRT_free(name);
 617       }
 618       else
 619         _this->name = name;
 620
 621       _munlock(_EXIT_LOCK2);
 622     }
 623   }
 624   TRACE("(%p) returning %s\n", _this, _this->name);
 625   return _this->name;
 626 }
 627
 628 /******************************************************************
 629  *              ?raw_name@type_info@@QBEPBDXZ (MSVCRT.@)
 630  */
 631 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_raw_name,4)
 632 const char * __stdcall MSVCRT_type_info_raw_name(type_info * _this)
 633 {
 634   TRACE("(%p) returning %s\n", _this, _this->mangled);
 635   return _this->mangled;
 636 }
 637
 638 /* Unexported */
 639 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_vector_dtor,8)
 640 void * __stdcall MSVCRT_type_info_vector_dtor(type_info * _this, unsigned int flags)
 641 {
 642     TRACE("(%p %x)\n", _this, flags);
 643     if (flags & 2)
 644     {
 645         /* we have an array, with the number of elements stored before the first object */
 646         int i, *ptr = (int *)_this - 1;
 647
 648         for (i = *ptr - 1; i >= 0; i--) MSVCRT_type_info_dtor(_this + i);
 649         MSVCRT_operator_delete(ptr);
 650     }
 651     else
 652     {
 653         MSVCRT_type_info_dtor(_this);
 654         if (flags & 1) MSVCRT_operator_delete(_this);
 655     }
 656     return _this;
 657 }
 658
 659 /* vtables */
 660
 661 #ifdef _WIN64
 662
 663 #define __ASM_VTABLE(name,funcs) \
 664     __asm__(".data\n" \
 665             "\t.align 8\n" \
 666             "\t.quad " __ASM_NAME(#name "_rtti") "\n" \
 667             "\t.globl " __ASM_NAME("MSVCRT_" #name "_vtable") "\n" \
 668             __ASM_NAME("MSVCRT_" #name "_vtable") ":\n" \
 669             "\t.quad " THISCALL_NAME(MSVCRT_ ## name ## _vector_dtor) "\n" \
 670             funcs "\n\t.text");
 671
 672 #define __ASM_EXCEPTION_VTABLE(name) \
 673     __ASM_VTABLE(name, "\t.quad " THISCALL_NAME(MSVCRT_what_exception) )
 674
 675 #else
 676
 677 #define __ASM_VTABLE(name,funcs) \
 678     __asm__(".data\n" \
 679             "\t.align 4\n" \
 680             "\t.long " __ASM_NAME(#name "_rtti") "\n" \
 681             "\t.globl " __ASM_NAME("MSVCRT_" #name "_vtable") "\n" \
 682             __ASM_NAME("MSVCRT_" #name "_vtable") ":\n" \
 683             "\t.long " THISCALL_NAME(MSVCRT_ ## name ## _vector_dtor) "\n" \
 684             funcs "\n\t.text");
 685
 686 #define __ASM_EXCEPTION_VTABLE(name) \
 687     __ASM_VTABLE(name, "\t.long " THISCALL_NAME(MSVCRT_what_exception) )
 688
 689 #endif /* _WIN64 */
 690
 691 #ifndef __GNUC__
 692 void __asm_dummy_vtables(void) {
 693 #endif
 694
 695 __ASM_VTABLE(type_info,"")
 696 __ASM_EXCEPTION_VTABLE(exception)
 697 __ASM_EXCEPTION_VTABLE(bad_typeid)
 698 __ASM_EXCEPTION_VTABLE(bad_cast)
 699 __ASM_EXCEPTION_VTABLE(__non_rtti_object)
 700
 701 #ifndef __GNUC__
 702 }
 703 #endif
 704
 705 /* Static RTTI for exported objects */
 706
 707 static const type_info exception_type_info =
 708 {
 709   &MSVCRT_type_info_vtable,
 710   NULL,
 711   ".?AVexception@@"
 712 };
 713
 714 static const rtti_base_descriptor exception_rtti_base_descriptor =
 715 {
 716   &exception_type_info,
 717   0,
 718   { 0, -1, 0 },
 719   0
 720 };
 721
 722 static const rtti_base_array exception_rtti_base_array =
 723 {
 724   {
 725     &exception_rtti_base_descriptor,
 726     NULL,
 727     NULL
 728   }
 729 };
 730
 731 static const rtti_object_hierarchy exception_type_hierarchy =
 732 {
 733   0,
 734   0,
 735   1,
 736   &exception_rtti_base_array
 737 };
 738
 739 const rtti_object_locator exception_rtti =
 740 {
 741   0,
 742   0,
 743   0,
 744   &exception_type_info,
 745   &exception_type_hierarchy
 746 };
 747
 748 static const cxx_type_info exception_cxx_type_info =
 749 {
 750   0,
 751   &exception_type_info,
 752   { 0, -1, 0 },
 753   sizeof(exception),
 754   (cxx_copy_ctor)THISCALL(MSVCRT_exception_copy_ctor)
 755 };
 756
 757 static const type_info bad_typeid_type_info =
 758 {
 759   &MSVCRT_type_info_vtable,
 760   NULL,
 761   ".?AVbad_typeid@@"
 762 };
 763
 764 static const rtti_base_descriptor bad_typeid_rtti_base_descriptor =
 765 {
 766   &bad_typeid_type_info,
 767   1,
 768   { 0, -1, 0 },
 769   0
 770 };
 771
 772 static const rtti_base_array bad_typeid_rtti_base_array =
 773 {
 774   {
 775     &bad_typeid_rtti_base_descriptor,
 776     &exception_rtti_base_descriptor,
 777     NULL
 778   }
 779 };
 780
 781 static const rtti_object_hierarchy bad_typeid_type_hierarchy =
 782 {
 783   0,
 784   0,
 785   2,
 786   &bad_typeid_rtti_base_array
 787 };
 788
 789 const rtti_object_locator bad_typeid_rtti =
 790 {
 791   0,
 792   0,
 793   0,
 794   &bad_typeid_type_info,
 795   &bad_typeid_type_hierarchy
 796 };
 797
 798 static const cxx_type_info bad_typeid_cxx_type_info =
 799 {
 800   0,
 801   &bad_typeid_type_info,
 802   { 0, -1, 0 },
 803   sizeof(exception),
 804   (cxx_copy_ctor)THISCALL(MSVCRT_bad_typeid_copy_ctor)
 805 };
 806
 807 static const type_info bad_cast_type_info =
 808 {
 809   &MSVCRT_type_info_vtable,
 810   NULL,
 811   ".?AVbad_cast@@"
 812 };
 813
 814 static const rtti_base_descriptor bad_cast_rtti_base_descriptor =
 815 {
 816   &bad_cast_type_info,
 817   1,
 818   { 0, -1, 0 },
 819   0
 820 };
 821
 822 static const rtti_base_array bad_cast_rtti_base_array =
 823 {
 824   {
 825     &bad_cast_rtti_base_descriptor,
 826     &exception_rtti_base_descriptor,
 827     NULL
 828   }
 829 };
 830
 831 static const rtti_object_hierarchy bad_cast_type_hierarchy =
 832 {
 833   0,
 834   0,
 835   2,
 836   &bad_cast_rtti_base_array
 837 };
 838
 839 const rtti_object_locator bad_cast_rtti =
 840 {
 841   0,
 842   0,
 843   0,
 844   &bad_cast_type_info,
 845   &bad_cast_type_hierarchy
 846 };
 847
 848 static const cxx_type_info bad_cast_cxx_type_info =
 849 {
 850   0,
 851   &bad_cast_type_info,
 852   { 0, -1, 0 },
 853   sizeof(exception),
 854   (cxx_copy_ctor)THISCALL(MSVCRT_bad_cast_copy_ctor)
 855 };
 856
 857 static const type_info __non_rtti_object_type_info =
 858 {
 859   &MSVCRT_type_info_vtable,
 860   NULL,
 861   ".?AV__non_rtti_object@@"
 862 };
 863
 864 static const rtti_base_descriptor __non_rtti_object_rtti_base_descriptor =
 865 {
 866   &__non_rtti_object_type_info,
 867   2,
 868   { 0, -1, 0 },
 869   0
 870 };
 871
 872 static const rtti_base_array __non_rtti_object_rtti_base_array =
 873 {
 874   {
 875     &__non_rtti_object_rtti_base_descriptor,
 876     &bad_typeid_rtti_base_descriptor,
 877     &exception_rtti_base_descriptor
 878   }
 879 };
 880
 881 static const rtti_object_hierarchy __non_rtti_object_type_hierarchy =
 882 {
 883   0,
 884   0,
 885   3,
 886   &__non_rtti_object_rtti_base_array
 887 };
 888
 889 const rtti_object_locator __non_rtti_object_rtti =
 890 {
 891   0,
 892   0,
 893   0,
 894   &__non_rtti_object_type_info,
 895   &__non_rtti_object_type_hierarchy
 896 };
 897
 898 static const cxx_type_info __non_rtti_object_cxx_type_info =
 899 {
 900   0,
 901   &__non_rtti_object_type_info,
 902   { 0, -1, 0 },
 903   sizeof(exception),
 904   (cxx_copy_ctor)THISCALL(MSVCRT___non_rtti_object_copy_ctor)
 905 };
 906
 907 static const type_info type_info_type_info =
 908 {
 909   &MSVCRT_type_info_vtable,
 910   NULL,
 911   ".?AVtype_info@@"
 912 };
 913
 914 static const rtti_base_descriptor type_info_rtti_base_descriptor =
 915 {
 916   &type_info_type_info,
 917   0,
 918   { 0, -1, 0 },
 919   0
 920 };
 921
 922 static const rtti_base_array type_info_rtti_base_array =
 923 {
 924   {
 925     &type_info_rtti_base_descriptor,
 926     NULL,
 927     NULL
 928   }
 929 };
 930
 931 static const rtti_object_hierarchy type_info_type_hierarchy =
 932 {
 933   0,
 934   0,
 935   1,
 936   &type_info_rtti_base_array
 937 };
 938
 939 const rtti_object_locator type_info_rtti =
 940 {
 941   0,
 942   0,
 943   0,
 944   &type_info_type_info,
 945   &type_info_type_hierarchy
 946 };
 947
 948 /*
 949  * Exception RTTI for cpp objects
 950  */
 951 static const cxx_type_info_table bad_cast_type_info_table =
 952 {
 953   3,
 954   {
 955    &__non_rtti_object_cxx_type_info,
 956    &bad_typeid_cxx_type_info,
 957    &exception_cxx_type_info
 958   }
 959 };
 960
 961 static const cxx_exception_type bad_cast_exception_type =
 962 {
 963   0,
 964   (void*)THISCALL(MSVCRT_bad_cast_dtor),
 965   NULL,
 966   &bad_cast_type_info_table
 967 };
 968
 969 static const cxx_type_info_table bad_typeid_type_info_table =
 970 {
 971   2,
 972   {
 973    &bad_cast_cxx_type_info,
 974    &exception_cxx_type_info,
 975    NULL
 976   }
 977 };
 978
 979 static const cxx_exception_type bad_typeid_exception_type =
 980 {
 981   0,
 982   (void*)THISCALL(MSVCRT_bad_typeid_dtor),
 983   NULL,
 984   &bad_cast_type_info_table
 985 };
 986
 987 static const cxx_exception_type __non_rtti_object_exception_type =
 988 {
 989   0,
 990   (void*)THISCALL(MSVCRT___non_rtti_object_dtor),
 991   NULL,
 992   &bad_typeid_type_info_table
 993 };
 994
 995
 996 /******************************************************************
 997  *              ?set_terminate@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
 998  *
 999  * Install a handler to be called when terminate() is called.
1000  *
1001  * PARAMS
1002  *  func [I] Handler function to install
1003  *
1004  * RETURNS
1005  *  The previously installed handler function, if any.
1006  */
1007 terminate_function CDECL MSVCRT_set_terminate(terminate_function func)
1008 {
1009     MSVCRT_thread_data *data = msvcrt_get_thread_data();
1010     terminate_function previous = data->terminate_handler;
1011     TRACE("(%p) returning %p\n",func,previous);
1012     data->terminate_handler = func;
1013     return previous;
1014 }
1015
1016 /******************************************************************
1017  *              ?set_unexpected@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
1018  *
1019  * Install a handler to be called when unexpected() is called.
1020  *
1021  * PARAMS
1022  *  func [I] Handler function to install
1023  *
1024  * RETURNS
1025  *  The previously installed handler function, if any.
1026  */
1027 unexpected_function CDECL MSVCRT_set_unexpected(unexpected_function func)
1028 {
1029     MSVCRT_thread_data *data = msvcrt_get_thread_data();
1030     unexpected_function previous = data->unexpected_handler;
1031     TRACE("(%p) returning %p\n",func,previous);
1032     data->unexpected_handler = func;
1033     return previous;
1034 }
1035
1036 /******************************************************************
1037  *              ?_set_se_translator@@YAP6AXIPAU_EXCEPTION_POINTERS@@@ZP6AXI0@Z@Z  (MSVCRT.@)
1038  */
1039 _se_translator_function CDECL MSVCRT__set_se_translator(_se_translator_function func)
1040 {
1041     MSVCRT_thread_data *data = msvcrt_get_thread_data();
1042     _se_translator_function previous = data->se_translator;
1043     TRACE("(%p) returning %p\n",func,previous);
1044     data->se_translator = func;
1045     return previous;
1046 }
1047
1048 /******************************************************************
1049  *              ?terminate@@YAXXZ (MSVCRT.@)
1050  *
1051  * Default handler for an unhandled exception.
1052  *
1053  * PARAMS
1054  *  None.
1055  *
1056  * RETURNS
1057  *  This function does not return. Either control resumes from any
1058  *  handler installed by calling set_terminate(), or (by default) abort()
1059  *  is called.
1060  */
1061 void CDECL MSVCRT_terminate(void)
1062 {
1063     MSVCRT_thread_data *data = msvcrt_get_thread_data();
1064     if (data->terminate_handler) data->terminate_handler();
1065     abort();
1066 }
1067
1068 /******************************************************************
1069  *              ?unexpected@@YAXXZ (MSVCRT.@)
1070  */
1071 void CDECL MSVCRT_unexpected(void)
1072 {
1073     MSVCRT_thread_data *data = msvcrt_get_thread_data();
1074     if (data->unexpected_handler) data->unexpected_handler();
1075     MSVCRT_terminate();
1076 }
1077
1078
1079 /******************************************************************
1080  *              __RTtypeid (MSVCRT.@)
1081  *
1082  * Retrieve the Run Time Type Information (RTTI) for a C++ object.
1083  *
1084  * PARAMS
1085  *  cppobj [I] C++ object to get type information for.
1086  *
1087  * RETURNS
1088  *  Success: A type_info object describing cppobj.
1089  *  Failure: If the object to be cast has no RTTI, a __non_rtti_object
1090  *           exception is thrown. If cppobj is NULL, a bad_typeid exception
1091  *           is thrown. In either case, this function does not return.
1092  *
1093  * NOTES
1094  *  This function is usually called by compiler generated code as a result
1095  *  of using one of the C++ dynamic cast statements.
1096  */
1097 const type_info* CDECL MSVCRT___RTtypeid(void *cppobj)
1098 {
1099     const type_info *ret;
1100
1101     if (!cppobj)
1102     {
1103         bad_typeid e;
1104         MSVCRT_bad_typeid_ctor( &e, "Attempted a typeid of NULL pointer!" );
1105         _CxxThrowException( &e, &bad_typeid_exception_type );
1106         return NULL;
1107     }
1108
1109     __TRY
1110     {
1111         const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
1112         ret = obj_locator->type_descriptor;
1113     }
1114     __EXCEPT_PAGE_FAULT
1115     {
1116         __non_rtti_object e;
1117         MSVCRT___non_rtti_object_ctor( &e, "Bad read pointer - no RTTI data!" );
1118         _CxxThrowException( &e, &bad_typeid_exception_type );
1119         return NULL;
1120     }
1121     __ENDTRY
1122     return ret;
1123 }
1124
1125 /******************************************************************
1126  *              __RTDynamicCast (MSVCRT.@)
1127  *
1128  * Dynamically cast a C++ object to one of its base classes.
1129  *
1130  * PARAMS
1131  *  cppobj   [I] Any C++ object to cast
1132  *  unknown  [I] Reserved, set to 0
1133  *  src      [I] type_info object describing cppobj
1134  *  dst      [I] type_info object describing the base class to cast to
1135  *  do_throw [I] TRUE = throw an exception if the cast fails, FALSE = don't
1136  *
1137  * RETURNS
1138  *  Success: The address of cppobj, cast to the object described by dst.
1139  *  Failure: NULL, If the object to be cast has no RTTI, or dst is not a
1140  *           valid cast for cppobj. If do_throw is TRUE, a bad_cast exception
1141  *           is thrown and this function does not return.
1142  *
1143  * NOTES
1144  *  This function is usually called by compiler generated code as a result
1145  *  of using one of the C++ dynamic cast statements.
1146  */
1147 void* CDECL MSVCRT___RTDynamicCast(void *cppobj, int unknown,
1148                                    type_info *src, type_info *dst,
1149                                    int do_throw)
1150 {
1151     void *ret;
1152
1153     if (!cppobj) return NULL;
1154
1155     TRACE("obj: %p unknown: %d src: %p %s dst: %p %s do_throw: %d)\n",
1156           cppobj, unknown, src, dbgstr_type_info(src), dst, dbgstr_type_info(dst), do_throw);
1157
1158     /* To cast an object at runtime:
1159      * 1.Find out the true type of the object from the typeinfo at vtable[-1]
1160      * 2.Search for the destination type in the class hierarchy
1161      * 3.If destination type is found, return base object address + dest offset
1162      *   Otherwise, fail the cast
1163      *
1164      * FIXME: the unknown parameter doesn't seem to be used for anything
1165      */
1166     __TRY
1167     {
1168         int i;
1169         const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
1170         const rtti_object_hierarchy *obj_bases = obj_locator->type_hierarchy;
1171         const rtti_base_descriptor * const* base_desc = obj_bases->base_classes->bases;
1172
1173         if (TRACE_ON(msvcrt)) dump_obj_locator(obj_locator);
1174
1175         ret = NULL;
1176         for (i = 0; i < obj_bases->array_len; i++)
1177         {
1178             const type_info *typ = base_desc[i]->type_descriptor;
1179
1180             if (!strcmp(typ->mangled, dst->mangled))
1181             {
1182                 /* compute the correct this pointer for that base class */
1183                 void *this_ptr = (char *)cppobj - obj_locator->base_class_offset;
1184                 ret = get_this_pointer( &base_desc[i]->offsets, this_ptr );
1185                 break;
1186             }
1187         }
1188         /* VC++ sets do_throw to 1 when the result of a dynamic_cast is assigned
1189          * to a reference, since references cannot be NULL.
1190          */
1191         if (!ret && do_throw)
1192         {
1193             const char *msg = "Bad dynamic_cast!";
1194             bad_cast e;
1195             MSVCRT_bad_cast_ctor( &e, &msg );
1196             _CxxThrowException( &e, &bad_cast_exception_type );
1197         }
1198     }
1199     __EXCEPT_PAGE_FAULT
1200     {
1201         __non_rtti_object e;
1202         MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
1203         _CxxThrowException( &e, &bad_typeid_exception_type );
1204         return NULL;
1205     }
1206     __ENDTRY
1207     return ret;
1208 }
1209
1210
1211 /******************************************************************
1212  *              __RTCastToVoid (MSVCRT.@)
1213  *
1214  * Dynamically cast a C++ object to a void*.
1215  *
1216  * PARAMS
1217  *  cppobj [I] The C++ object to cast
1218  *
1219  * RETURNS
1220  *  Success: The base address of the object as a void*.
1221  *  Failure: NULL, if cppobj is NULL or has no RTTI.
1222  *
1223  * NOTES
1224  *  This function is usually called by compiler generated code as a result
1225  *  of using one of the C++ dynamic cast statements.
1226  */
1227 void* CDECL MSVCRT___RTCastToVoid(void *cppobj)
1228 {
1229     void *ret;
1230
1231     if (!cppobj) return NULL;
1232
1233     __TRY
1234     {
1235         const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
1236         ret = (char *)cppobj - obj_locator->base_class_offset;
1237     }
1238     __EXCEPT_PAGE_FAULT
1239     {
1240         __non_rtti_object e;
1241         MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
1242         _CxxThrowException( &e, &bad_typeid_exception_type );
1243         return NULL;
1244     }
1245     __ENDTRY
1246     return ret;
1247 }