dlls/msvcrt/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 "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26
  27 #include "windef.h"
  28 #include "winternl.h"
  29 #include "wine/exception.h"
  30 #include "wine/debug.h"
  31 #include "msvcrt.h"
  32 #include "cppexcept.h"
  33 #include "mtdll.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  36
  37 typedef exception bad_cast;
  38 typedef exception bad_typeid;
  39 typedef exception __non_rtti_object;
  40
  41 typedef struct _rtti_base_descriptor
  42 {
  43   const type_info *type_descriptor;
  44   int num_base_classes;
  45   this_ptr_offsets offsets;    /* offsets for computing the this pointer */
  46   unsigned int attributes;
  47 } rtti_base_descriptor;
  48
  49 typedef struct _rtti_base_array
  50 {
  51   const rtti_base_descriptor *bases[3]; /* First element is the class itself */
  52 } rtti_base_array;
  53
  54 typedef struct _rtti_object_hierarchy
  55 {
  56   unsigned int signature;
  57   unsigned int attributes;
  58   int array_len; /* Size of the array pointed to by 'base_classes' */
  59   const rtti_base_array *base_classes;
  60 } rtti_object_hierarchy;
  61
  62 typedef struct _rtti_object_locator
  63 {
  64   unsigned int signature;
  65   int base_class_offset;
  66   unsigned int flags;
  67   const type_info *type_descriptor;
  68   const rtti_object_hierarchy *type_hierarchy;
  69 } rtti_object_locator;
  70
  71
  72 #ifdef __i386__  /* thiscall functions are i386-specific */
  73
  74 #define THISCALL(func) __thiscall_ ## func
  75 #define THISCALL_NAME(func) __ASM_NAME("__thiscall_" #func)
  76 #define __thiscall __stdcall
  77 #define DEFINE_THISCALL_WRAPPER(func,args) \
  78     extern void THISCALL(func)(void); \
  79     __ASM_GLOBAL_FUNC(__thiscall_ ## func, \
  80                       "popl %eax\n\t" \
  81                       "pushl %ecx\n\t" \
  82                       "pushl %eax\n\t" \
  83                       "jmp " __ASM_NAME(#func) __ASM_STDCALL(args) )
  84 #else /* __i386__ */
  85
  86 #define THISCALL(func) func
  87 #define THISCALL_NAME(func) __ASM_NAME(#func)
  88 #define __thiscall __cdecl
  89 #define DEFINE_THISCALL_WRAPPER(func,args) /* nothing */
  90
  91 #endif /* __i386__ */
  92
  93 extern const vtable_ptr MSVCRT_exception_vtable;
  94 extern const vtable_ptr MSVCRT_bad_typeid_vtable;
  95 extern const vtable_ptr MSVCRT_bad_cast_vtable;
  96 extern const vtable_ptr MSVCRT___non_rtti_object_vtable;
  97 extern const vtable_ptr MSVCRT_type_info_vtable;
  98
  99 /* get the vtable pointer for a C++ object */
 100 static inline const vtable_ptr *get_vtable( void *obj )
 101 {
 102     return *(const vtable_ptr **)obj;
 103 }
 104
 105 static inline const rtti_object_locator *get_obj_locator( void *cppobj )
 106 {
 107     const vtable_ptr *vtable = get_vtable( cppobj );
 108     return (const rtti_object_locator *)vtable[-1];
 109 }
 110
 111 static void dump_obj_locator( const rtti_object_locator *ptr )
 112 {
 113     int i;
 114     const rtti_object_hierarchy *h = ptr->type_hierarchy;
 115
 116     TRACE( "%p: sig=%08x base_offset=%08x flags=%08x type=%p %s hierarchy=%p\n",
 117            ptr, ptr->signature, ptr->base_class_offset, ptr->flags,
 118            ptr->type_descriptor, dbgstr_type_info(ptr->type_descriptor), ptr->type_hierarchy );
 119     TRACE( "  hierarchy: sig=%08x attr=%08x len=%d base classes=%p\n",
 120            h->signature, h->attributes, h->array_len, h->base_classes );
 121     for (i = 0; i < h->array_len; i++)
 122     {
 123         TRACE( "    base class %p: num %d off %d,%d,%d attr %08x type %p %s\n",
 124                h->base_classes->bases[i],
 125                h->base_classes->bases[i]->num_base_classes,
 126                h->base_classes->bases[i]->offsets.this_offset,
 127                h->base_classes->bases[i]->offsets.vbase_descr,
 128                h->base_classes->bases[i]->offsets.vbase_offset,
 129                h->base_classes->bases[i]->attributes,
 130                h->base_classes->bases[i]->type_descriptor,
 131                dbgstr_type_info(h->base_classes->bases[i]->type_descriptor) );
 132     }
 133 }
 134
 135 /* Internal common ctor for exception */
 136 static void EXCEPTION_ctor(exception *_this, const char** name)
 137 {
 138   _this->vtable = &MSVCRT_exception_vtable;
 139   if (*name)
 140   {
 141     unsigned int name_len = strlen(*name) + 1;
 142     _this->name = MSVCRT_malloc(name_len);
 143     memcpy(_this->name, *name, name_len);
 144     _this->do_free = TRUE;
 145   }
 146   else
 147   {
 148     _this->name = NULL;
 149     _this->do_free = FALSE;
 150   }
 151 }
 152
 153 /******************************************************************
 154  *              ??0exception@@QAE@ABQBD@Z (MSVCRT.@)
 155  */
 156 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_ctor,8)
 157 exception * __thiscall MSVCRT_exception_ctor(exception * _this, const char ** name)
 158 {
 159   TRACE("(%p,%s)\n", _this, *name);
 160   EXCEPTION_ctor(_this, name);
 161   return _this;
 162 }
 163
 164 /******************************************************************
 165  *              ??0exception@@QAE@ABQBDH@Z (MSVCRT.@)
 166  */
 167 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_ctor_noalloc,12)
 168 exception * __thiscall MSVCRT_exception_ctor_noalloc(exception * _this, char ** name, int noalloc)
 169 {
 170   TRACE("(%p,%s)\n", _this, *name);
 171   _this->vtable = &MSVCRT_exception_vtable;
 172   _this->name = *name;
 173   _this->do_free = FALSE;
 174   return _this;
 175 }
 176
 177 /******************************************************************
 178  *              ??0exception@@QAE@ABV0@@Z (MSVCRT.@)
 179  */
 180 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_copy_ctor,8)
 181 exception * __thiscall MSVCRT_exception_copy_ctor(exception * _this, const exception * rhs)
 182 {
 183   TRACE("(%p,%p)\n", _this, rhs);
 184
 185   if (!rhs->do_free)
 186   {
 187     _this->vtable = &MSVCRT_exception_vtable;
 188     _this->name = rhs->name;
 189     _this->do_free = FALSE;
 190   }
 191   else
 192     EXCEPTION_ctor(_this, (const char**)&rhs->name);
 193   TRACE("name = %s\n", _this->name);
 194   return _this;
 195 }
 196
 197 /******************************************************************
 198  *              ??0exception@@QAE@XZ (MSVCRT.@)
 199  */
 200 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_default_ctor,4)
 201 exception * __thiscall MSVCRT_exception_default_ctor(exception * _this)
 202 {
 203   static const char* empty = NULL;
 204
 205   TRACE("(%p)\n", _this);
 206   EXCEPTION_ctor(_this, &empty);
 207   return _this;
 208 }
 209
 210 /******************************************************************
 211  *              ??1exception@@UAE@XZ (MSVCRT.@)
 212  */
 213 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_dtor,4)
 214 void __thiscall MSVCRT_exception_dtor(exception * _this)
 215 {
 216   TRACE("(%p)\n", _this);
 217   _this->vtable = &MSVCRT_exception_vtable;
 218   if (_this->do_free) MSVCRT_free(_this->name);
 219 }
 220
 221 /******************************************************************
 222  *              ??4exception@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 223  */
 224 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_opequals,8)
 225 exception * __thiscall MSVCRT_exception_opequals(exception * _this, const exception * rhs)
 226 {
 227   TRACE("(%p %p)\n", _this, rhs);
 228   if (_this != rhs)
 229   {
 230       MSVCRT_exception_dtor(_this);
 231       MSVCRT_exception_copy_ctor(_this, rhs);
 232   }
 233   TRACE("name = %s\n", _this->name);
 234   return _this;
 235 }
 236
 237 /******************************************************************
 238  *              ??_Eexception@@UAEPAXI@Z (MSVCRT.@)
 239  */
 240 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_vector_dtor,8)
 241 void * __thiscall MSVCRT_exception_vector_dtor(exception * _this, unsigned int flags)
 242 {
 243     TRACE("(%p %x)\n", _this, flags);
 244     if (flags & 2)
 245     {
 246         /* we have an array, with the number of elements stored before the first object */
 247         int i, *ptr = (int *)_this - 1;
 248
 249         for (i = *ptr - 1; i >= 0; i--) MSVCRT_exception_dtor(_this + i);
 250         MSVCRT_operator_delete(ptr);
 251     }
 252     else
 253     {
 254         MSVCRT_exception_dtor(_this);
 255         if (flags & 1) MSVCRT_operator_delete(_this);
 256     }
 257     return _this;
 258 }
 259
 260 /******************************************************************
 261  *              ??_Gexception@@UAEPAXI@Z (MSVCRT.@)
 262  */
 263 DEFINE_THISCALL_WRAPPER(MSVCRT_exception_scalar_dtor,8)
 264 void * __thiscall MSVCRT_exception_scalar_dtor(exception * _this, unsigned int flags)
 265 {
 266     TRACE("(%p %x)\n", _this, flags);
 267     MSVCRT_exception_dtor(_this);
 268     if (flags & 1) MSVCRT_operator_delete(_this);
 269     return _this;
 270 }
 271
 272 /******************************************************************
 273  *              ?what@exception@@UBEPBDXZ (MSVCRT.@)
 274  */
 275 DEFINE_THISCALL_WRAPPER(MSVCRT_what_exception,4)
 276 const char * __thiscall MSVCRT_what_exception(exception * _this)
 277 {
 278   TRACE("(%p) returning %s\n", _this, _this->name);
 279   return _this->name ? _this->name : "Unknown exception";
 280 }
 281
 282 /******************************************************************
 283  *              ??0bad_typeid@@QAE@ABV0@@Z (MSVCRT.@)
 284  */
 285 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_copy_ctor,8)
 286 bad_typeid * __thiscall MSVCRT_bad_typeid_copy_ctor(bad_typeid * _this, const bad_typeid * rhs)
 287 {
 288   TRACE("(%p %p)\n", _this, rhs);
 289   MSVCRT_exception_copy_ctor(_this, rhs);
 290   _this->vtable = &MSVCRT_bad_typeid_vtable;
 291   return _this;
 292 }
 293
 294 /******************************************************************
 295  *              ??0bad_typeid@@QAE@PBD@Z (MSVCRT.@)
 296  */
 297 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_ctor,8)
 298 bad_typeid * __thiscall MSVCRT_bad_typeid_ctor(bad_typeid * _this, const char * name)
 299 {
 300   TRACE("(%p %s)\n", _this, name);
 301   EXCEPTION_ctor(_this, &name);
 302   _this->vtable = &MSVCRT_bad_typeid_vtable;
 303   return _this;
 304 }
 305
 306 /******************************************************************
 307  *              ??_Fbad_typeid@@QAEXXZ (MSVCRT.@)
 308  */
 309 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_default_ctor,4)
 310 bad_typeid * __thiscall MSVCRT_bad_typeid_default_ctor(bad_typeid * _this)
 311 {
 312   return MSVCRT_bad_typeid_ctor( _this, "bad typeid" );
 313 }
 314
 315 /******************************************************************
 316  *              ??1bad_typeid@@UAE@XZ (MSVCRT.@)
 317  */
 318 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_dtor,4)
 319 void __thiscall MSVCRT_bad_typeid_dtor(bad_typeid * _this)
 320 {
 321   TRACE("(%p)\n", _this);
 322   MSVCRT_exception_dtor(_this);
 323 }
 324
 325 /******************************************************************
 326  *              ??4bad_typeid@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 327  */
 328 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_opequals,8)
 329 bad_typeid * __thiscall MSVCRT_bad_typeid_opequals(bad_typeid * _this, const bad_typeid * rhs)
 330 {
 331   TRACE("(%p %p)\n", _this, rhs);
 332   MSVCRT_exception_opequals(_this, rhs);
 333   return _this;
 334 }
 335
 336 /******************************************************************
 337  *              ??_Ebad_typeid@@UAEPAXI@Z (MSVCRT.@)
 338  */
 339 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_vector_dtor,8)
 340 void * __thiscall MSVCRT_bad_typeid_vector_dtor(bad_typeid * _this, unsigned int flags)
 341 {
 342     TRACE("(%p %x)\n", _this, flags);
 343     if (flags & 2)
 344     {
 345         /* we have an array, with the number of elements stored before the first object */
 346         int i, *ptr = (int *)_this - 1;
 347
 348         for (i = *ptr - 1; i >= 0; i--) MSVCRT_bad_typeid_dtor(_this + i);
 349         MSVCRT_operator_delete(ptr);
 350     }
 351     else
 352     {
 353         MSVCRT_bad_typeid_dtor(_this);
 354         if (flags & 1) MSVCRT_operator_delete(_this);
 355     }
 356     return _this;
 357 }
 358
 359 /******************************************************************
 360  *              ??_Gbad_typeid@@UAEPAXI@Z (MSVCRT.@)
 361  */
 362 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_scalar_dtor,8)
 363 void * __thiscall MSVCRT_bad_typeid_scalar_dtor(bad_typeid * _this, unsigned int flags)
 364 {
 365     TRACE("(%p %x)\n", _this, flags);
 366     MSVCRT_bad_typeid_dtor(_this);
 367     if (flags & 1) MSVCRT_operator_delete(_this);
 368     return _this;
 369 }
 370
 371 /******************************************************************
 372  *              ??0__non_rtti_object@@QAE@ABV0@@Z (MSVCRT.@)
 373  */
 374 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_copy_ctor,8)
 375 __non_rtti_object * __thiscall MSVCRT___non_rtti_object_copy_ctor(__non_rtti_object * _this,
 376                                                                  const __non_rtti_object * rhs)
 377 {
 378   TRACE("(%p %p)\n", _this, rhs);
 379   MSVCRT_bad_typeid_copy_ctor(_this, rhs);
 380   _this->vtable = &MSVCRT___non_rtti_object_vtable;
 381   return _this;
 382 }
 383
 384 /******************************************************************
 385  *              ??0__non_rtti_object@@QAE@PBD@Z (MSVCRT.@)
 386  */
 387 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_ctor,8)
 388 __non_rtti_object * __thiscall MSVCRT___non_rtti_object_ctor(__non_rtti_object * _this,
 389                                                             const char * name)
 390 {
 391   TRACE("(%p %s)\n", _this, name);
 392   EXCEPTION_ctor(_this, &name);
 393   _this->vtable = &MSVCRT___non_rtti_object_vtable;
 394   return _this;
 395 }
 396
 397 /******************************************************************
 398  *              ??1__non_rtti_object@@UAE@XZ (MSVCRT.@)
 399  */
 400 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_dtor,4)
 401 void __thiscall MSVCRT___non_rtti_object_dtor(__non_rtti_object * _this)
 402 {
 403   TRACE("(%p)\n", _this);
 404   MSVCRT_bad_typeid_dtor(_this);
 405 }
 406
 407 /******************************************************************
 408  *              ??4__non_rtti_object@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 409  */
 410 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_opequals,8)
 411 __non_rtti_object * __thiscall MSVCRT___non_rtti_object_opequals(__non_rtti_object * _this,
 412                                                                 const __non_rtti_object *rhs)
 413 {
 414   TRACE("(%p %p)\n", _this, rhs);
 415   MSVCRT_bad_typeid_opequals(_this, rhs);
 416   return _this;
 417 }
 418
 419 /******************************************************************
 420  *              ??_E__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
 421  */
 422 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_vector_dtor,8)
 423 void * __thiscall MSVCRT___non_rtti_object_vector_dtor(__non_rtti_object * _this, unsigned int flags)
 424 {
 425     TRACE("(%p %x)\n", _this, flags);
 426     if (flags & 2)
 427     {
 428         /* we have an array, with the number of elements stored before the first object */
 429         int i, *ptr = (int *)_this - 1;
 430
 431         for (i = *ptr - 1; i >= 0; i--) MSVCRT___non_rtti_object_dtor(_this + i);
 432         MSVCRT_operator_delete(ptr);
 433     }
 434     else
 435     {
 436         MSVCRT___non_rtti_object_dtor(_this);
 437         if (flags & 1) MSVCRT_operator_delete(_this);
 438     }
 439     return _this;
 440 }
 441
 442 /******************************************************************
 443  *              ??_G__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
 444  */
 445 DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_scalar_dtor,8)
 446 void * __thiscall MSVCRT___non_rtti_object_scalar_dtor(__non_rtti_object * _this, unsigned int flags)
 447 {
 448   TRACE("(%p %x)\n", _this, flags);
 449   MSVCRT___non_rtti_object_dtor(_this);
 450   if (flags & 1) MSVCRT_operator_delete(_this);
 451   return _this;
 452 }
 453
 454 /******************************************************************
 455  *              ??0bad_cast@@AAE@PBQBD@Z (MSVCRT.@)
 456  *              ??0bad_cast@@QAE@ABQBD@Z (MSVCRT.@)
 457  */
 458 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor,8)
 459 bad_cast * __thiscall MSVCRT_bad_cast_ctor(bad_cast * _this, const char ** name)
 460 {
 461   TRACE("(%p %s)\n", _this, *name);
 462   EXCEPTION_ctor(_this, name);
 463   _this->vtable = &MSVCRT_bad_cast_vtable;
 464   return _this;
 465 }
 466
 467 /******************************************************************
 468  *              ??0bad_cast@@QAE@ABV0@@Z (MSVCRT.@)
 469  */
 470 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_copy_ctor,8)
 471 bad_cast * __thiscall MSVCRT_bad_cast_copy_ctor(bad_cast * _this, const bad_cast * rhs)
 472 {
 473   TRACE("(%p %p)\n", _this, rhs);
 474   MSVCRT_exception_copy_ctor(_this, rhs);
 475   _this->vtable = &MSVCRT_bad_cast_vtable;
 476   return _this;
 477 }
 478
 479 /******************************************************************
 480  *              ??0bad_cast@@QAE@PBD@Z (MSVCRT.@)
 481  */
 482 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor_charptr,8)
 483 bad_cast * __thiscall MSVCRT_bad_cast_ctor_charptr(bad_cast * _this, const char * name)
 484 {
 485   TRACE("(%p %s)\n", _this, name);
 486   EXCEPTION_ctor(_this, &name);
 487   _this->vtable = &MSVCRT_bad_cast_vtable;
 488   return _this;
 489 }
 490
 491 /******************************************************************
 492  *              ??_Fbad_cast@@QAEXXZ (MSVCRT.@)
 493  */
 494 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_default_ctor,4)
 495 bad_cast * __thiscall MSVCRT_bad_cast_default_ctor(bad_cast * _this)
 496 {
 497   return MSVCRT_bad_cast_ctor_charptr( _this, "bad cast" );
 498 }
 499
 500 /******************************************************************
 501  *              ??1bad_cast@@UAE@XZ (MSVCRT.@)
 502  */
 503 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_dtor,4)
 504 void __thiscall MSVCRT_bad_cast_dtor(bad_cast * _this)
 505 {
 506   TRACE("(%p)\n", _this);
 507   MSVCRT_exception_dtor(_this);
 508 }
 509
 510 /******************************************************************
 511  *              ??4bad_cast@@QAEAAV0@ABV0@@Z (MSVCRT.@)
 512  */
 513 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_opequals,8)
 514 bad_cast * __thiscall MSVCRT_bad_cast_opequals(bad_cast * _this, const bad_cast * rhs)
 515 {
 516   TRACE("(%p %p)\n", _this, rhs);
 517   MSVCRT_exception_opequals(_this, rhs);
 518   return _this;
 519 }
 520
 521 /******************************************************************
 522  *              ??_Ebad_cast@@UAEPAXI@Z (MSVCRT.@)
 523  */
 524 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_vector_dtor,8)
 525 void * __thiscall MSVCRT_bad_cast_vector_dtor(bad_cast * _this, unsigned int flags)
 526 {
 527     TRACE("(%p %x)\n", _this, flags);
 528     if (flags & 2)
 529     {
 530         /* we have an array, with the number of elements stored before the first object */
 531         int i, *ptr = (int *)_this - 1;
 532
 533         for (i = *ptr - 1; i >= 0; i--) MSVCRT_bad_cast_dtor(_this + i);
 534         MSVCRT_operator_delete(ptr);
 535     }
 536     else
 537     {
 538         MSVCRT_bad_cast_dtor(_this);
 539         if (flags & 1) MSVCRT_operator_delete(_this);
 540     }
 541     return _this;
 542 }
 543
 544 /******************************************************************
 545  *              ??_Gbad_cast@@UAEPAXI@Z (MSVCRT.@)
 546  */
 547 DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_scalar_dtor,8)
 548 void * __thiscall MSVCRT_bad_cast_scalar_dtor(bad_cast * _this, unsigned int flags)
 549 {
 550   TRACE("(%p %x)\n", _this, flags);
 551   MSVCRT_bad_cast_dtor(_this);
 552   if (flags & 1) MSVCRT_operator_delete(_this);
 553   return _this;
 554 }
 555
 556 /******************************************************************
 557  *              ??8type_info@@QBEHABV0@@Z (MSVCRT.@)
 558  */
 559 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_opequals_equals,8)
 560 int __thiscall MSVCRT_type_info_opequals_equals(type_info * _this, const type_info * rhs)
 561 {
 562     int ret = !strcmp(_this->mangled + 1, rhs->mangled + 1);
 563     TRACE("(%p %p) returning %d\n", _this, rhs, ret);
 564     return ret;
 565 }
 566
 567 /******************************************************************
 568  *              ??9type_info@@QBEHABV0@@Z (MSVCRT.@)
 569  */
 570 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_opnot_equals,8)
 571 int __thiscall MSVCRT_type_info_opnot_equals(type_info * _this, const type_info * rhs)
 572 {
 573     int ret = !!strcmp(_this->mangled + 1, rhs->mangled + 1);
 574     TRACE("(%p %p) returning %d\n", _this, rhs, ret);
 575     return ret;
 576 }
 577
 578 /******************************************************************
 579  *              ?before@type_info@@QBEHABV1@@Z (MSVCRT.@)
 580  */
 581 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_before,8)
 582 int __thiscall MSVCRT_type_info_before(type_info * _this, const type_info * rhs)
 583 {
 584     int ret = strcmp(_this->mangled + 1, rhs->mangled + 1) < 0;
 585     TRACE("(%p %p) returning %d\n", _this, rhs, ret);
 586     return ret;
 587 }
 588
 589 /******************************************************************
 590  *              ??1type_info@@UAE@XZ (MSVCRT.@)
 591  */
 592 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_dtor,4)
 593 void __thiscall MSVCRT_type_info_dtor(type_info * _this)
 594 {
 595   TRACE("(%p)\n", _this);
 596   MSVCRT_free(_this->name);
 597 }
 598
 599 /******************************************************************
 600  *              ?name@type_info@@QBEPBDXZ (MSVCRT.@)
 601  */
 602 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_name,4)
 603 const char * __thiscall MSVCRT_type_info_name(type_info * _this)
 604 {
 605   if (!_this->name)
 606   {
 607     /* Create and set the demangled name */
 608     /* Note: mangled name in type_info struct always starts with a '.', while
 609      * it isn't valid for mangled name.
 610      * Is this '.' really part of the mangled name, or has it some other meaning ?
 611      */
 612     char* name = __unDName(0, _this->mangled + 1, 0,
 613                            MSVCRT_malloc, MSVCRT_free, 0x2800);
 614     if (name)
 615     {
 616       unsigned int len = strlen(name);
 617
 618       /* It seems _unDName may leave blanks at the end of the demangled name */
 619       while (len && name[--len] == ' ')
 620         name[len] = '\0';
 621
 622       if (InterlockedCompareExchangePointer((void**)&_this->name, name, NULL))
 623       {
 624         /* Another thread set this member since we checked above - use it */
 625         MSVCRT_free(name);
 626       }
 627     }
 628   }
 629   TRACE("(%p) returning %s\n", _this, _this->name);
 630   return _this->name;
 631 }
 632
 633 /******************************************************************
 634  *              ?raw_name@type_info@@QBEPBDXZ (MSVCRT.@)
 635  */
 636 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_raw_name,4)
 637 const char * __thiscall MSVCRT_type_info_raw_name(type_info * _this)
 638 {
 639   TRACE("(%p) returning %s\n", _this, _this->mangled);
 640   return _this->mangled;
 641 }
 642
 643 /* Unexported */
 644 DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_vector_dtor,8)
 645 void * __thiscall MSVCRT_type_info_vector_dtor(type_info * _this, unsigned int flags)
 646 {
 647     TRACE("(%p %x)\n", _this, flags);
 648     if (flags & 2)
 649     {
 650         /* we have an array, with the number of elements stored before the first object */
 651         int i, *ptr = (int *)_this - 1;
 652
 653         for (i = *ptr - 1; i >= 0; i--) MSVCRT_type_info_dtor(_this + i);
 654         MSVCRT_operator_delete(ptr);
 655     }
 656     else
 657     {
 658         MSVCRT_type_info_dtor(_this);
 659         if (flags & 1) MSVCRT_operator_delete(_this);
 660     }
 661     return _this;
 662 }
 663
 664 /* vtables */
 665
 666 #ifdef _WIN64
 667
 668 #define __ASM_VTABLE(name,funcs) \
 669     __asm__(".data\n" \
 670             "\t.align 8\n" \
 671             "\t.quad " __ASM_NAME(#name "_rtti") "\n" \
 672             "\t.globl " __ASM_NAME("MSVCRT_" #name "_vtable") "\n" \
 673             __ASM_NAME("MSVCRT_" #name "_vtable") ":\n" \
 674             "\t.quad " THISCALL_NAME(MSVCRT_ ## name ## _vector_dtor) "\n" \
 675             funcs "\n\t.text");
 676
 677 #define __ASM_EXCEPTION_VTABLE(name) \
 678     __ASM_VTABLE(name, "\t.quad " THISCALL_NAME(MSVCRT_what_exception) )
 679
 680 #else
 681
 682 #define __ASM_VTABLE(name,funcs) \
 683     __asm__(".data\n" \
 684             "\t.align 4\n" \
 685             "\t.long " __ASM_NAME(#name "_rtti") "\n" \
 686             "\t.globl " __ASM_NAME("MSVCRT_" #name "_vtable") "\n" \
 687             __ASM_NAME("MSVCRT_" #name "_vtable") ":\n" \
 688             "\t.long " THISCALL_NAME(MSVCRT_ ## name ## _vector_dtor) "\n" \
 689             funcs "\n\t.text");
 690
 691 #define __ASM_EXCEPTION_VTABLE(name) \
 692     __ASM_VTABLE(name, "\t.long " THISCALL_NAME(MSVCRT_what_exception) )
 693
 694 #endif /* _WIN64 */
 695
 696 #ifndef __GNUC__
 697 void __asm_dummy_vtables(void) {
 698 #endif
 699
 700 __ASM_VTABLE(type_info,"")
 701 __ASM_EXCEPTION_VTABLE(exception)
 702 __ASM_EXCEPTION_VTABLE(bad_typeid)
 703 __ASM_EXCEPTION_VTABLE(bad_cast)
 704 __ASM_EXCEPTION_VTABLE(__non_rtti_object)
 705
 706 #ifndef __GNUC__
 707 }
 708 #endif
 709
 710 /* Static RTTI for exported objects */
 711
 712 #define DEFINE_RTTI_DATA(name, base_classes, cl1, cl2, mangled_name) \
 713 static const type_info name ## _type_info = { \
 714     &MSVCRT_type_info_vtable, \
 715     NULL, \
 716     mangled_name \
 717 }; \
 718 \
 719 static const rtti_base_descriptor name ## _rtti_base_descriptor = { \
 720     &name ##_type_info, \
 721     base_classes, \
 722     { 0, -1, 0}, \
 723     0 \
 724 }; \
 725 \
 726 static const rtti_base_array name ## _rtti_base_array = { \
 727     { \
 728         &name ## _rtti_base_descriptor, \
 729         cl1, \
 730         cl2  \
 731     } \
 732 }; \
 733 \
 734 static const rtti_object_hierarchy name ## _hierarchy = { \
 735     0, \
 736     0, \
 737     base_classes+1, \
 738     &name ## _rtti_base_array \
 739 }; \
 740 \
 741 const rtti_object_locator name ## _rtti = { \
 742     0, \
 743     0, \
 744     0, \
 745     &name ## _type_info, \
 746     &name ## _hierarchy \
 747 }
 748
 749 #define DEFINE_EXCEPTION_TYPE_INFO(name, base_classes, cl1, cl2) \
 750 static const cxx_type_info name ## _cxx_type_info = \
 751 { \
 752     0, \
 753     &name ## _type_info, \
 754     { 0, -1, 0 }, \
 755     sizeof(name), \
 756     (cxx_copy_ctor)THISCALL(MSVCRT_ ## name ## _copy_ctor) \
 757 }; \
 758 \
 759 static const cxx_type_info_table name ## _type_info_table = \
 760 { \
 761     base_classes+1, \
 762     { \
 763         &name ## _cxx_type_info, \
 764         cl2, \
 765         cl1 \
 766     } \
 767 }; \
 768 \
 769 const cxx_exception_type name ## _exception_type = \
 770 { \
 771     0, \
 772     (void *)THISCALL(MSVCRT_ ## name ## _dtor), \
 773     NULL, \
 774     &name ## _type_info_table \
 775 }
 776
 777 DEFINE_RTTI_DATA( type_info, 0, NULL, NULL, ".?AVtype_info@@" );
 778 DEFINE_RTTI_DATA( exception, 0, NULL, NULL, ".?AVexception@@" );
 779 DEFINE_RTTI_DATA( bad_typeid, 1, &exception_rtti_base_descriptor, NULL, ".?AVbad_typeid@@" );
 780 DEFINE_RTTI_DATA( bad_cast, 1, &exception_rtti_base_descriptor, NULL, ".?AVbad_cast@@" );
 781 DEFINE_RTTI_DATA( __non_rtti_object, 2, &bad_typeid_rtti_base_descriptor, &exception_rtti_base_descriptor, ".?AV__non_rtti_object@@" );
 782
 783 DEFINE_EXCEPTION_TYPE_INFO( exception, 0, NULL, NULL );
 784 DEFINE_EXCEPTION_TYPE_INFO( bad_typeid, 1, &exception_cxx_type_info, NULL );
 785 DEFINE_EXCEPTION_TYPE_INFO( bad_cast, 1, &exception_cxx_type_info, NULL );
 786 DEFINE_EXCEPTION_TYPE_INFO( __non_rtti_object, 2, &bad_typeid_cxx_type_info, &exception_cxx_type_info );
 787
 788
 789 /******************************************************************
 790  *              ?set_terminate@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
 791  *
 792  * Install a handler to be called when terminate() is called.
 793  *
 794  * PARAMS
 795  *  func [I] Handler function to install
 796  *
 797  * RETURNS
 798  *  The previously installed handler function, if any.
 799  */
 800 MSVCRT_terminate_function CDECL MSVCRT_set_terminate(MSVCRT_terminate_function func)
 801 {
 802     thread_data_t *data = msvcrt_get_thread_data();
 803     MSVCRT_terminate_function previous = data->terminate_handler;
 804     TRACE("(%p) returning %p\n",func,previous);
 805     data->terminate_handler = func;
 806     return previous;
 807 }
 808
 809 /******************************************************************
 810  *              _get_terminate (MSVCRT.@)
 811  */
 812 MSVCRT_terminate_function CDECL MSVCRT__get_terminate(void)
 813 {
 814     thread_data_t *data = msvcrt_get_thread_data();
 815     TRACE("returning %p\n", data->terminate_handler);
 816     return data->terminate_handler;
 817 }
 818
 819 /******************************************************************
 820  *              ?set_unexpected@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
 821  *
 822  * Install a handler to be called when unexpected() is called.
 823  *
 824  * PARAMS
 825  *  func [I] Handler function to install
 826  *
 827  * RETURNS
 828  *  The previously installed handler function, if any.
 829  */
 830 MSVCRT_unexpected_function CDECL MSVCRT_set_unexpected(MSVCRT_unexpected_function func)
 831 {
 832     thread_data_t *data = msvcrt_get_thread_data();
 833     MSVCRT_unexpected_function previous = data->unexpected_handler;
 834     TRACE("(%p) returning %p\n",func,previous);
 835     data->unexpected_handler = func;
 836     return previous;
 837 }
 838
 839 /******************************************************************
 840  *              _get_unexpected (MSVCRT.@)
 841  */
 842 MSVCRT_unexpected_function CDECL MSVCRT__get_unexpected(void)
 843 {
 844     thread_data_t *data = msvcrt_get_thread_data();
 845     TRACE("returning %p\n", data->unexpected_handler);
 846     return data->unexpected_handler;
 847 }
 848
 849 /******************************************************************
 850  *              ?_set_se_translator@@YAP6AXIPAU_EXCEPTION_POINTERS@@@ZP6AXI0@Z@Z  (MSVCRT.@)
 851  */
 852 MSVCRT__se_translator_function CDECL MSVCRT__set_se_translator(MSVCRT__se_translator_function func)
 853 {
 854     thread_data_t *data = msvcrt_get_thread_data();
 855     MSVCRT__se_translator_function previous = data->se_translator;
 856     TRACE("(%p) returning %p\n",func,previous);
 857     data->se_translator = func;
 858     return previous;
 859 }
 860
 861 /******************************************************************
 862  *              ?terminate@@YAXXZ (MSVCRT.@)
 863  *
 864  * Default handler for an unhandled exception.
 865  *
 866  * PARAMS
 867  *  None.
 868  *
 869  * RETURNS
 870  *  This function does not return. Either control resumes from any
 871  *  handler installed by calling set_terminate(), or (by default) abort()
 872  *  is called.
 873  */
 874 void CDECL MSVCRT_terminate(void)
 875 {
 876     thread_data_t *data = msvcrt_get_thread_data();
 877     if (data->terminate_handler) data->terminate_handler();
 878     MSVCRT_abort();
 879 }
 880
 881 /******************************************************************
 882  *              ?unexpected@@YAXXZ (MSVCRT.@)
 883  */
 884 void CDECL MSVCRT_unexpected(void)
 885 {
 886     thread_data_t *data = msvcrt_get_thread_data();
 887     if (data->unexpected_handler) data->unexpected_handler();
 888     MSVCRT_terminate();
 889 }
 890
 891
 892 /******************************************************************
 893  *              __RTtypeid (MSVCRT.@)
 894  *
 895  * Retrieve the Run Time Type Information (RTTI) for a C++ object.
 896  *
 897  * PARAMS
 898  *  cppobj [I] C++ object to get type information for.
 899  *
 900  * RETURNS
 901  *  Success: A type_info object describing cppobj.
 902  *  Failure: If the object to be cast has no RTTI, a __non_rtti_object
 903  *           exception is thrown. If cppobj is NULL, a bad_typeid exception
 904  *           is thrown. In either case, this function does not return.
 905  *
 906  * NOTES
 907  *  This function is usually called by compiler generated code as a result
 908  *  of using one of the C++ dynamic cast statements.
 909  */
 910 const type_info* CDECL MSVCRT___RTtypeid(void *cppobj)
 911 {
 912     const type_info *ret;
 913
 914     if (!cppobj)
 915     {
 916         bad_typeid e;
 917         MSVCRT_bad_typeid_ctor( &e, "Attempted a typeid of NULL pointer!" );
 918         _CxxThrowException( &e, &bad_typeid_exception_type );
 919         return NULL;
 920     }
 921
 922     __TRY
 923     {
 924         const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
 925         ret = obj_locator->type_descriptor;
 926     }
 927     __EXCEPT_PAGE_FAULT
 928     {
 929         __non_rtti_object e;
 930         MSVCRT___non_rtti_object_ctor( &e, "Bad read pointer - no RTTI data!" );
 931         _CxxThrowException( &e, &bad_typeid_exception_type );
 932         return NULL;
 933     }
 934     __ENDTRY
 935     return ret;
 936 }
 937
 938 /******************************************************************
 939  *              __RTDynamicCast (MSVCRT.@)
 940  *
 941  * Dynamically cast a C++ object to one of its base classes.
 942  *
 943  * PARAMS
 944  *  cppobj   [I] Any C++ object to cast
 945  *  unknown  [I] Reserved, set to 0
 946  *  src      [I] type_info object describing cppobj
 947  *  dst      [I] type_info object describing the base class to cast to
 948  *  do_throw [I] TRUE = throw an exception if the cast fails, FALSE = don't
 949  *
 950  * RETURNS
 951  *  Success: The address of cppobj, cast to the object described by dst.
 952  *  Failure: NULL, If the object to be cast has no RTTI, or dst is not a
 953  *           valid cast for cppobj. If do_throw is TRUE, a bad_cast exception
 954  *           is thrown and this function does not return.
 955  *
 956  * NOTES
 957  *  This function is usually called by compiler generated code as a result
 958  *  of using one of the C++ dynamic cast statements.
 959  */
 960 void* CDECL MSVCRT___RTDynamicCast(void *cppobj, int unknown,
 961                                    type_info *src, type_info *dst,
 962                                    int do_throw)
 963 {
 964     void *ret;
 965
 966     if (!cppobj) return NULL;
 967
 968     TRACE("obj: %p unknown: %d src: %p %s dst: %p %s do_throw: %d)\n",
 969           cppobj, unknown, src, dbgstr_type_info(src), dst, dbgstr_type_info(dst), do_throw);
 970
 971     /* To cast an object at runtime:
 972      * 1.Find out the true type of the object from the typeinfo at vtable[-1]
 973      * 2.Search for the destination type in the class hierarchy
 974      * 3.If destination type is found, return base object address + dest offset
 975      *   Otherwise, fail the cast
 976      *
 977      * FIXME: the unknown parameter doesn't seem to be used for anything
 978      */
 979     __TRY
 980     {
 981         int i;
 982         const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
 983         const rtti_object_hierarchy *obj_bases = obj_locator->type_hierarchy;
 984         const rtti_base_descriptor * const* base_desc = obj_bases->base_classes->bases;
 985
 986         if (TRACE_ON(msvcrt)) dump_obj_locator(obj_locator);
 987
 988         ret = NULL;
 989         for (i = 0; i < obj_bases->array_len; i++)
 990         {
 991             const type_info *typ = base_desc[i]->type_descriptor;
 992
 993             if (!strcmp(typ->mangled, dst->mangled))
 994             {
 995                 /* compute the correct this pointer for that base class */
 996                 void *this_ptr = (char *)cppobj - obj_locator->base_class_offset;
 997                 ret = get_this_pointer( &base_desc[i]->offsets, this_ptr );
 998                 break;
 999             }
1000         }
1001         /* VC++ sets do_throw to 1 when the result of a dynamic_cast is assigned
1002          * to a reference, since references cannot be NULL.
1003          */
1004         if (!ret && do_throw)
1005         {
1006             const char *msg = "Bad dynamic_cast!";
1007             bad_cast e;
1008             MSVCRT_bad_cast_ctor( &e, &msg );
1009             _CxxThrowException( &e, &bad_cast_exception_type );
1010         }
1011     }
1012     __EXCEPT_PAGE_FAULT
1013     {
1014         __non_rtti_object e;
1015         MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
1016         _CxxThrowException( &e, &bad_typeid_exception_type );
1017         return NULL;
1018     }
1019     __ENDTRY
1020     return ret;
1021 }
1022
1023
1024 /******************************************************************
1025  *              __RTCastToVoid (MSVCRT.@)
1026  *
1027  * Dynamically cast a C++ object to a void*.
1028  *
1029  * PARAMS
1030  *  cppobj [I] The C++ object to cast
1031  *
1032  * RETURNS
1033  *  Success: The base address of the object as a void*.
1034  *  Failure: NULL, if cppobj is NULL or has no RTTI.
1035  *
1036  * NOTES
1037  *  This function is usually called by compiler generated code as a result
1038  *  of using one of the C++ dynamic cast statements.
1039  */
1040 void* CDECL MSVCRT___RTCastToVoid(void *cppobj)
1041 {
1042     void *ret;
1043
1044     if (!cppobj) return NULL;
1045
1046     __TRY
1047     {
1048         const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
1049         ret = (char *)cppobj - obj_locator->base_class_offset;
1050     }
1051     __EXCEPT_PAGE_FAULT
1052     {
1053         __non_rtti_object e;
1054         MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
1055         _CxxThrowException( &e, &bad_typeid_exception_type );
1056         return NULL;
1057     }
1058     __ENDTRY
1059     return ret;
1060 }
1061
1062
1063 /*********************************************************************
1064  *              _CxxThrowException (MSVCRT.@)
1065  */
1066 void WINAPI _CxxThrowException( exception *object, const cxx_exception_type *type )
1067 {
1068     ULONG_PTR args[3];
1069
1070     args[0] = CXX_FRAME_MAGIC_VC6;
1071     args[1] = (ULONG_PTR)object;
1072     args[2] = (ULONG_PTR)type;
1073     RaiseException( CXX_EXCEPTION, EH_NONCONTINUABLE, 3, args );
1074 }