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wine/dlls/msvcrt/cpp.c

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/*
* msvcrt.dll C++ objects
*
* Copyright 2000 Jon Griffiths
* Copyright 2003, 2004 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include "windef.h"
#include "winternl.h"
#include "wine/exception.h"
#include "wine/debug.h"
#include "msvcrt.h"
#include "cppexcept.h"
#include "mtdll.h"
#include "cxx.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
typedef exception bad_cast;
typedef exception bad_typeid;
typedef exception __non_rtti_object;
extern const vtable_ptr MSVCRT_exception_vtable;
extern const vtable_ptr MSVCRT_bad_typeid_vtable;
extern const vtable_ptr MSVCRT_bad_cast_vtable;
extern const vtable_ptr MSVCRT___non_rtti_object_vtable;
extern const vtable_ptr MSVCRT_type_info_vtable;
/* get the vtable pointer for a C++ object */
static inline const vtable_ptr *get_vtable( void *obj )
{
return *(const vtable_ptr **)obj;
}
static inline const rtti_object_locator *get_obj_locator( void *cppobj )
{
const vtable_ptr *vtable = get_vtable( cppobj );
return (const rtti_object_locator *)vtable[-1];
}
#ifndef __x86_64__
static void dump_obj_locator( const rtti_object_locator *ptr )
{
int i;
const rtti_object_hierarchy *h = ptr->type_hierarchy;
TRACE( "%p: sig=%08x base_offset=%08x flags=%08x type=%p %s hierarchy=%p\n",
ptr, ptr->signature, ptr->base_class_offset, ptr->flags,
ptr->type_descriptor, dbgstr_type_info(ptr->type_descriptor), ptr->type_hierarchy );
TRACE( " hierarchy: sig=%08x attr=%08x len=%d base classes=%p\n",
h->signature, h->attributes, h->array_len, h->base_classes );
for (i = 0; i < h->array_len; i++)
{
TRACE( " base class %p: num %d off %d,%d,%d attr %08x type %p %s\n",
h->base_classes->bases[i],
h->base_classes->bases[i]->num_base_classes,
h->base_classes->bases[i]->offsets.this_offset,
h->base_classes->bases[i]->offsets.vbase_descr,
h->base_classes->bases[i]->offsets.vbase_offset,
h->base_classes->bases[i]->attributes,
h->base_classes->bases[i]->type_descriptor,
dbgstr_type_info(h->base_classes->bases[i]->type_descriptor) );
}
}
#else
static void dump_obj_locator( const rtti_object_locator *ptr )
{
int i;
char *base = ptr->signature == 0 ? (char*)RtlPcToFileHeader((void*)ptr, (void**)&base) : (char*)ptr - ptr->object_locator;
const rtti_object_hierarchy *h = (const rtti_object_hierarchy*)(base + ptr->type_hierarchy);
const type_info *type_descriptor = (const type_info*)(base + ptr->type_descriptor);
TRACE( "%p: sig=%08x base_offset=%08x flags=%08x type=%p %s hierarchy=%p\n",
ptr, ptr->signature, ptr->base_class_offset, ptr->flags,
type_descriptor, dbgstr_type_info(type_descriptor), h );
TRACE( " hierarchy: sig=%08x attr=%08x len=%d base classes=%p\n",
h->signature, h->attributes, h->array_len, base + h->base_classes );
for (i = 0; i < h->array_len; i++)
{
const rtti_base_descriptor *bases = (rtti_base_descriptor*)(base +
((const rtti_base_array*)(base + h->base_classes))->bases[i]);
TRACE( " base class %p: num %d off %d,%d,%d attr %08x type %p %s\n",
bases,
bases->num_base_classes,
bases->offsets.this_offset,
bases->offsets.vbase_descr,
bases->offsets.vbase_offset,
bases->attributes,
base + bases->type_descriptor,
dbgstr_type_info((const type_info*)(base + bases->type_descriptor)) );
}
}
#endif
/* Internal common ctor for exception */
static void EXCEPTION_ctor(exception *_this, const char** name)
{
_this->vtable = &MSVCRT_exception_vtable;
if (*name)
{
unsigned int name_len = strlen(*name) + 1;
_this->name = MSVCRT_malloc(name_len);
memcpy(_this->name, *name, name_len);
_this->do_free = TRUE;
}
else
{
_this->name = NULL;
_this->do_free = FALSE;
}
}
/******************************************************************
* ??0exception@@QAE@ABQBD@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_ctor,8)
exception * __thiscall MSVCRT_exception_ctor(exception * _this, const char ** name)
{
TRACE("(%p,%s)\n", _this, *name);
EXCEPTION_ctor(_this, name);
return _this;
}
/******************************************************************
* ??0exception@@QAE@ABQBDH@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_ctor_noalloc,12)
exception * __thiscall MSVCRT_exception_ctor_noalloc(exception * _this, char ** name, int noalloc)
{
TRACE("(%p,%s)\n", _this, *name);
_this->vtable = &MSVCRT_exception_vtable;
_this->name = *name;
_this->do_free = FALSE;
return _this;
}
/******************************************************************
* ??0exception@@QAE@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_copy_ctor,8)
exception * __thiscall MSVCRT_exception_copy_ctor(exception * _this, const exception * rhs)
{
TRACE("(%p,%p)\n", _this, rhs);
if (!rhs->do_free)
{
_this->vtable = &MSVCRT_exception_vtable;
_this->name = rhs->name;
_this->do_free = FALSE;
}
else
EXCEPTION_ctor(_this, (const char**)&rhs->name);
TRACE("name = %s\n", _this->name);
return _this;
}
/******************************************************************
* ??0exception@@QAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_default_ctor,4)
exception * __thiscall MSVCRT_exception_default_ctor(exception * _this)
{
static const char* empty = NULL;
TRACE("(%p)\n", _this);
EXCEPTION_ctor(_this, &empty);
return _this;
}
/******************************************************************
* ??1exception@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_dtor,4)
void __thiscall MSVCRT_exception_dtor(exception * _this)
{
TRACE("(%p)\n", _this);
_this->vtable = &MSVCRT_exception_vtable;
if (_this->do_free) MSVCRT_free(_this->name);
}
/******************************************************************
* ??4exception@@QAEAAV0@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_opequals,8)
exception * __thiscall MSVCRT_exception_opequals(exception * _this, const exception * rhs)
{
TRACE("(%p %p)\n", _this, rhs);
if (_this != rhs)
{
MSVCRT_exception_dtor(_this);
MSVCRT_exception_copy_ctor(_this, rhs);
}
TRACE("name = %s\n", _this->name);
return _this;
}
/******************************************************************
* ??_Eexception@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_vector_dtor,8)
void * __thiscall MSVCRT_exception_vector_dtor(exception * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
if (flags & 2)
{
/* we have an array, with the number of elements stored before the first object */
INT_PTR i, *ptr = (INT_PTR *)_this - 1;
for (i = *ptr - 1; i >= 0; i--) MSVCRT_exception_dtor(_this + i);
MSVCRT_operator_delete(ptr);
}
else
{
MSVCRT_exception_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
}
return _this;
}
/******************************************************************
* ??_Gexception@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_scalar_dtor,8)
void * __thiscall MSVCRT_exception_scalar_dtor(exception * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
MSVCRT_exception_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
return _this;
}
/******************************************************************
* ?what@exception@@UBEPBDXZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_what_exception,4)
const char * __thiscall MSVCRT_what_exception(exception * _this)
{
TRACE("(%p) returning %s\n", _this, _this->name);
return _this->name ? _this->name : "Unknown exception";
}
/******************************************************************
* ??0bad_typeid@@QAE@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_copy_ctor,8)
bad_typeid * __thiscall MSVCRT_bad_typeid_copy_ctor(bad_typeid * _this, const bad_typeid * rhs)
{
TRACE("(%p %p)\n", _this, rhs);
MSVCRT_exception_copy_ctor(_this, rhs);
_this->vtable = &MSVCRT_bad_typeid_vtable;
return _this;
}
/******************************************************************
* ??0bad_typeid@@QAE@PBD@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_ctor,8)
bad_typeid * __thiscall MSVCRT_bad_typeid_ctor(bad_typeid * _this, const char * name)
{
TRACE("(%p %s)\n", _this, name);
EXCEPTION_ctor(_this, &name);
_this->vtable = &MSVCRT_bad_typeid_vtable;
return _this;
}
/******************************************************************
* ??_Fbad_typeid@@QAEXXZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_default_ctor,4)
bad_typeid * __thiscall MSVCRT_bad_typeid_default_ctor(bad_typeid * _this)
{
return MSVCRT_bad_typeid_ctor( _this, "bad typeid" );
}
/******************************************************************
* ??1bad_typeid@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_dtor,4)
void __thiscall MSVCRT_bad_typeid_dtor(bad_typeid * _this)
{
TRACE("(%p)\n", _this);
MSVCRT_exception_dtor(_this);
}
/******************************************************************
* ??4bad_typeid@@QAEAAV0@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_opequals,8)
bad_typeid * __thiscall MSVCRT_bad_typeid_opequals(bad_typeid * _this, const bad_typeid * rhs)
{
TRACE("(%p %p)\n", _this, rhs);
MSVCRT_exception_opequals(_this, rhs);
return _this;
}
/******************************************************************
* ??_Ebad_typeid@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_vector_dtor,8)
void * __thiscall MSVCRT_bad_typeid_vector_dtor(bad_typeid * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
if (flags & 2)
{
/* we have an array, with the number of elements stored before the first object */
INT_PTR i, *ptr = (INT_PTR *)_this - 1;
for (i = *ptr - 1; i >= 0; i--) MSVCRT_bad_typeid_dtor(_this + i);
MSVCRT_operator_delete(ptr);
}
else
{
MSVCRT_bad_typeid_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
}
return _this;
}
/******************************************************************
* ??_Gbad_typeid@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_scalar_dtor,8)
void * __thiscall MSVCRT_bad_typeid_scalar_dtor(bad_typeid * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
MSVCRT_bad_typeid_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
return _this;
}
/******************************************************************
* ??0__non_rtti_object@@QAE@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_copy_ctor,8)
__non_rtti_object * __thiscall MSVCRT___non_rtti_object_copy_ctor(__non_rtti_object * _this,
const __non_rtti_object * rhs)
{
TRACE("(%p %p)\n", _this, rhs);
MSVCRT_bad_typeid_copy_ctor(_this, rhs);
_this->vtable = &MSVCRT___non_rtti_object_vtable;
return _this;
}
/******************************************************************
* ??0__non_rtti_object@@QAE@PBD@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_ctor,8)
__non_rtti_object * __thiscall MSVCRT___non_rtti_object_ctor(__non_rtti_object * _this,
const char * name)
{
TRACE("(%p %s)\n", _this, name);
EXCEPTION_ctor(_this, &name);
_this->vtable = &MSVCRT___non_rtti_object_vtable;
return _this;
}
/******************************************************************
* ??1__non_rtti_object@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_dtor,4)
void __thiscall MSVCRT___non_rtti_object_dtor(__non_rtti_object * _this)
{
TRACE("(%p)\n", _this);
MSVCRT_bad_typeid_dtor(_this);
}
/******************************************************************
* ??4__non_rtti_object@@QAEAAV0@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_opequals,8)
__non_rtti_object * __thiscall MSVCRT___non_rtti_object_opequals(__non_rtti_object * _this,
const __non_rtti_object *rhs)
{
TRACE("(%p %p)\n", _this, rhs);
MSVCRT_bad_typeid_opequals(_this, rhs);
return _this;
}
/******************************************************************
* ??_E__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_vector_dtor,8)
void * __thiscall MSVCRT___non_rtti_object_vector_dtor(__non_rtti_object * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
if (flags & 2)
{
/* we have an array, with the number of elements stored before the first object */
INT_PTR i, *ptr = (INT_PTR *)_this - 1;
for (i = *ptr - 1; i >= 0; i--) MSVCRT___non_rtti_object_dtor(_this + i);
MSVCRT_operator_delete(ptr);
}
else
{
MSVCRT___non_rtti_object_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
}
return _this;
}
/******************************************************************
* ??_G__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT___non_rtti_object_scalar_dtor,8)
void * __thiscall MSVCRT___non_rtti_object_scalar_dtor(__non_rtti_object * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
MSVCRT___non_rtti_object_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
return _this;
}
/******************************************************************
* ??0bad_cast@@AAE@PBQBD@Z (MSVCRT.@)
* ??0bad_cast@@QAE@ABQBD@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor,8)
bad_cast * __thiscall MSVCRT_bad_cast_ctor(bad_cast * _this, const char ** name)
{
TRACE("(%p %s)\n", _this, *name);
EXCEPTION_ctor(_this, name);
_this->vtable = &MSVCRT_bad_cast_vtable;
return _this;
}
/******************************************************************
* ??0bad_cast@@QAE@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_copy_ctor,8)
bad_cast * __thiscall MSVCRT_bad_cast_copy_ctor(bad_cast * _this, const bad_cast * rhs)
{
TRACE("(%p %p)\n", _this, rhs);
MSVCRT_exception_copy_ctor(_this, rhs);
_this->vtable = &MSVCRT_bad_cast_vtable;
return _this;
}
/******************************************************************
* ??0bad_cast@@QAE@PBD@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor_charptr,8)
bad_cast * __thiscall MSVCRT_bad_cast_ctor_charptr(bad_cast * _this, const char * name)
{
TRACE("(%p %s)\n", _this, name);
EXCEPTION_ctor(_this, &name);
_this->vtable = &MSVCRT_bad_cast_vtable;
return _this;
}
/******************************************************************
* ??_Fbad_cast@@QAEXXZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_default_ctor,4)
bad_cast * __thiscall MSVCRT_bad_cast_default_ctor(bad_cast * _this)
{
return MSVCRT_bad_cast_ctor_charptr( _this, "bad cast" );
}
/******************************************************************
* ??1bad_cast@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_dtor,4)
void __thiscall MSVCRT_bad_cast_dtor(bad_cast * _this)
{
TRACE("(%p)\n", _this);
MSVCRT_exception_dtor(_this);
}
/******************************************************************
* ??4bad_cast@@QAEAAV0@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_opequals,8)
bad_cast * __thiscall MSVCRT_bad_cast_opequals(bad_cast * _this, const bad_cast * rhs)
{
TRACE("(%p %p)\n", _this, rhs);
MSVCRT_exception_opequals(_this, rhs);
return _this;
}
/******************************************************************
* ??_Ebad_cast@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_vector_dtor,8)
void * __thiscall MSVCRT_bad_cast_vector_dtor(bad_cast * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
if (flags & 2)
{
/* we have an array, with the number of elements stored before the first object */
INT_PTR i, *ptr = (INT_PTR *)_this - 1;
for (i = *ptr - 1; i >= 0; i--) MSVCRT_bad_cast_dtor(_this + i);
MSVCRT_operator_delete(ptr);
}
else
{
MSVCRT_bad_cast_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
}
return _this;
}
/******************************************************************
* ??_Gbad_cast@@UAEPAXI@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_scalar_dtor,8)
void * __thiscall MSVCRT_bad_cast_scalar_dtor(bad_cast * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
MSVCRT_bad_cast_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
return _this;
}
/******************************************************************
* ??8type_info@@QBEHABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_opequals_equals,8)
int __thiscall MSVCRT_type_info_opequals_equals(type_info * _this, const type_info * rhs)
{
int ret = !strcmp(_this->mangled + 1, rhs->mangled + 1);
TRACE("(%p %p) returning %d\n", _this, rhs, ret);
return ret;
}
/******************************************************************
* ??9type_info@@QBEHABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_opnot_equals,8)
int __thiscall MSVCRT_type_info_opnot_equals(type_info * _this, const type_info * rhs)
{
int ret = !!strcmp(_this->mangled + 1, rhs->mangled + 1);
TRACE("(%p %p) returning %d\n", _this, rhs, ret);
return ret;
}
/******************************************************************
* ?before@type_info@@QBEHABV1@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_before,8)
int __thiscall MSVCRT_type_info_before(type_info * _this, const type_info * rhs)
{
int ret = strcmp(_this->mangled + 1, rhs->mangled + 1) < 0;
TRACE("(%p %p) returning %d\n", _this, rhs, ret);
return ret;
}
/******************************************************************
* ??1type_info@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_dtor,4)
void __thiscall MSVCRT_type_info_dtor(type_info * _this)
{
TRACE("(%p)\n", _this);
MSVCRT_free(_this->name);
}
/******************************************************************
* ?name@type_info@@QBEPBDXZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_name,4)
const char * __thiscall MSVCRT_type_info_name(type_info * _this)
{
if (!_this->name)
{
/* Create and set the demangled name */
/* Note: mangled name in type_info struct always starts with a '.', while
* it isn't valid for mangled name.
* Is this '.' really part of the mangled name, or has it some other meaning ?
*/
char* name = __unDName(0, _this->mangled + 1, 0,
MSVCRT_malloc, MSVCRT_free, 0x2800);
if (name)
{
unsigned int len = strlen(name);
/* It seems _unDName may leave blanks at the end of the demangled name */
while (len && name[--len] == ' ')
name[len] = '\0';
if (InterlockedCompareExchangePointer((void**)&_this->name, name, NULL))
{
/* Another thread set this member since we checked above - use it */
MSVCRT_free(name);
}
}
}
TRACE("(%p) returning %s\n", _this, _this->name);
return _this->name;
}
/******************************************************************
* ?raw_name@type_info@@QBEPBDXZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_raw_name,4)
const char * __thiscall MSVCRT_type_info_raw_name(type_info * _this)
{
TRACE("(%p) returning %s\n", _this, _this->mangled);
return _this->mangled;
}
/* Unexported */
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_vector_dtor,8)
void * __thiscall MSVCRT_type_info_vector_dtor(type_info * _this, unsigned int flags)
{
TRACE("(%p %x)\n", _this, flags);
if (flags & 2)
{
/* we have an array, with the number of elements stored before the first object */
INT_PTR i, *ptr = (INT_PTR *)_this - 1;
for (i = *ptr - 1; i >= 0; i--) MSVCRT_type_info_dtor(_this + i);
MSVCRT_operator_delete(ptr);
}
else
{
MSVCRT_type_info_dtor(_this);
if (flags & 1) MSVCRT_operator_delete(_this);
}
return _this;
}
#ifndef __GNUC__
void __asm_dummy_vtables(void) {
#endif
__ASM_VTABLE(type_info,
VTABLE_ADD_FUNC(MSVCRT_type_info_vector_dtor));
__ASM_VTABLE(exception,
VTABLE_ADD_FUNC(MSVCRT_exception_vector_dtor)
VTABLE_ADD_FUNC(MSVCRT_what_exception));
__ASM_VTABLE(bad_typeid,
VTABLE_ADD_FUNC(MSVCRT_bad_typeid_vector_dtor)
VTABLE_ADD_FUNC(MSVCRT_what_exception));
__ASM_VTABLE(bad_cast,
VTABLE_ADD_FUNC(MSVCRT_bad_cast_vector_dtor)
VTABLE_ADD_FUNC(MSVCRT_what_exception));
__ASM_VTABLE(__non_rtti_object,
VTABLE_ADD_FUNC(MSVCRT___non_rtti_object_vector_dtor)
VTABLE_ADD_FUNC(MSVCRT_what_exception));
#ifndef __GNUC__
}
#endif
DEFINE_RTTI_DATA0( type_info, 0, ".?AVtype_info@@" );
DEFINE_RTTI_DATA0( exception, 0, ".?AVexception@@" );
DEFINE_RTTI_DATA1( bad_typeid, 0, &exception_rtti_base_descriptor, ".?AVbad_typeid@@" );
DEFINE_RTTI_DATA1( bad_cast, 0, &exception_rtti_base_descriptor, ".?AVbad_cast@@" );
DEFINE_RTTI_DATA2( __non_rtti_object, 0, &bad_typeid_rtti_base_descriptor, &exception_rtti_base_descriptor, ".?AV__non_rtti_object@@" );
DEFINE_EXCEPTION_TYPE_INFO( exception, 0, NULL, NULL );
DEFINE_EXCEPTION_TYPE_INFO( bad_typeid, 1, &exception_cxx_type_info, NULL );
DEFINE_EXCEPTION_TYPE_INFO( bad_cast, 1, &exception_cxx_type_info, NULL );
DEFINE_EXCEPTION_TYPE_INFO( __non_rtti_object, 2, &bad_typeid_cxx_type_info, &exception_cxx_type_info );
void msvcrt_init_exception(void *base)
{
#ifdef __x86_64__
init_type_info_rtti(base);
init_exception_rtti(base);
init_bad_typeid_rtti(base);
init_bad_cast_rtti(base);
init___non_rtti_object_rtti(base);
init_exception_cxx(base);
init_bad_typeid_cxx(base);
init_bad_cast_cxx(base);
init___non_rtti_object_cxx(base);
#endif
}
/******************************************************************
* ?set_terminate@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
*
* Install a handler to be called when terminate() is called.
*
* PARAMS
* func [I] Handler function to install
*
* RETURNS
* The previously installed handler function, if any.
*/
MSVCRT_terminate_function CDECL MSVCRT_set_terminate(MSVCRT_terminate_function func)
{
thread_data_t *data = msvcrt_get_thread_data();
MSVCRT_terminate_function previous = data->terminate_handler;
TRACE("(%p) returning %p\n",func,previous);
data->terminate_handler = func;
return previous;
}
/******************************************************************
* _get_terminate (MSVCRT.@)
*/
MSVCRT_terminate_function CDECL MSVCRT__get_terminate(void)
{
thread_data_t *data = msvcrt_get_thread_data();
TRACE("returning %p\n", data->terminate_handler);
return data->terminate_handler;
}
/******************************************************************
* ?set_unexpected@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
*
* Install a handler to be called when unexpected() is called.
*
* PARAMS
* func [I] Handler function to install
*
* RETURNS
* The previously installed handler function, if any.
*/
MSVCRT_unexpected_function CDECL MSVCRT_set_unexpected(MSVCRT_unexpected_function func)
{
thread_data_t *data = msvcrt_get_thread_data();
MSVCRT_unexpected_function previous = data->unexpected_handler;
TRACE("(%p) returning %p\n",func,previous);
data->unexpected_handler = func;
return previous;
}
/******************************************************************
* _get_unexpected (MSVCRT.@)
*/
MSVCRT_unexpected_function CDECL MSVCRT__get_unexpected(void)
{
thread_data_t *data = msvcrt_get_thread_data();
TRACE("returning %p\n", data->unexpected_handler);
return data->unexpected_handler;
}
/******************************************************************
* ?_set_se_translator@@YAP6AXIPAU_EXCEPTION_POINTERS@@@ZP6AXI0@Z@Z (MSVCRT.@)
*/
MSVCRT__se_translator_function CDECL MSVCRT__set_se_translator(MSVCRT__se_translator_function func)
{
thread_data_t *data = msvcrt_get_thread_data();
MSVCRT__se_translator_function previous = data->se_translator;
TRACE("(%p) returning %p\n",func,previous);
data->se_translator = func;
return previous;
}
/******************************************************************
* ?terminate@@YAXXZ (MSVCRT.@)
*
* Default handler for an unhandled exception.
*
* PARAMS
* None.
*
* RETURNS
* This function does not return. Either control resumes from any
* handler installed by calling set_terminate(), or (by default) abort()
* is called.
*/
void CDECL MSVCRT_terminate(void)
{
thread_data_t *data = msvcrt_get_thread_data();
if (data->terminate_handler) data->terminate_handler();
MSVCRT_abort();
}
/******************************************************************
* ?unexpected@@YAXXZ (MSVCRT.@)
*/
void CDECL MSVCRT_unexpected(void)
{
thread_data_t *data = msvcrt_get_thread_data();
if (data->unexpected_handler) data->unexpected_handler();
MSVCRT_terminate();
}
/******************************************************************
* __RTtypeid (MSVCRT.@)
*
* Retrieve the Run Time Type Information (RTTI) for a C++ object.
*
* PARAMS
* cppobj [I] C++ object to get type information for.
*
* RETURNS
* Success: A type_info object describing cppobj.
* Failure: If the object to be cast has no RTTI, a __non_rtti_object
* exception is thrown. If cppobj is NULL, a bad_typeid exception
* is thrown. In either case, this function does not return.
*
* NOTES
* This function is usually called by compiler generated code as a result
* of using one of the C++ dynamic cast statements.
*/
#ifndef __x86_64__
const type_info* CDECL MSVCRT___RTtypeid(void *cppobj)
{
const type_info *ret;
if (!cppobj)
{
bad_typeid e;
MSVCRT_bad_typeid_ctor( &e, "Attempted a typeid of NULL pointer!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__TRY
{
const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
ret = obj_locator->type_descriptor;
}
__EXCEPT_PAGE_FAULT
{
__non_rtti_object e;
MSVCRT___non_rtti_object_ctor( &e, "Bad read pointer - no RTTI data!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__ENDTRY
return ret;
}
#else
const type_info* CDECL MSVCRT___RTtypeid(void *cppobj)
{
const type_info *ret;
if (!cppobj)
{
bad_typeid e;
MSVCRT_bad_typeid_ctor( &e, "Attempted a typeid of NULL pointer!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__TRY
{
const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
char *base;
if(obj_locator->signature == 0)
base = (char*)RtlPcToFileHeader((void*)obj_locator, (void**)&base);
else
base = (char*)obj_locator - obj_locator->object_locator;
ret = (type_info*)(base + obj_locator->type_descriptor);
}
__EXCEPT_PAGE_FAULT
{
__non_rtti_object e;
MSVCRT___non_rtti_object_ctor( &e, "Bad read pointer - no RTTI data!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__ENDTRY
return ret;
}
#endif
/******************************************************************
* __RTDynamicCast (MSVCRT.@)
*
* Dynamically cast a C++ object to one of its base classes.
*
* PARAMS
* cppobj [I] Any C++ object to cast
* unknown [I] Reserved, set to 0
* src [I] type_info object describing cppobj
* dst [I] type_info object describing the base class to cast to
* do_throw [I] TRUE = throw an exception if the cast fails, FALSE = don't
*
* RETURNS
* Success: The address of cppobj, cast to the object described by dst.
* Failure: NULL, If the object to be cast has no RTTI, or dst is not a
* valid cast for cppobj. If do_throw is TRUE, a bad_cast exception
* is thrown and this function does not return.
*
* NOTES
* This function is usually called by compiler generated code as a result
* of using one of the C++ dynamic cast statements.
*/
#ifndef __x86_64__
void* CDECL MSVCRT___RTDynamicCast(void *cppobj, int unknown,
type_info *src, type_info *dst,
int do_throw)
{
void *ret;
if (!cppobj) return NULL;
TRACE("obj: %p unknown: %d src: %p %s dst: %p %s do_throw: %d)\n",
cppobj, unknown, src, dbgstr_type_info(src), dst, dbgstr_type_info(dst), do_throw);
/* To cast an object at runtime:
* 1.Find out the true type of the object from the typeinfo at vtable[-1]
* 2.Search for the destination type in the class hierarchy
* 3.If destination type is found, return base object address + dest offset
* Otherwise, fail the cast
*
* FIXME: the unknown parameter doesn't seem to be used for anything
*/
__TRY
{
int i;
const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
const rtti_object_hierarchy *obj_bases = obj_locator->type_hierarchy;
const rtti_base_descriptor * const* base_desc = obj_bases->base_classes->bases;
if (TRACE_ON(msvcrt)) dump_obj_locator(obj_locator);
ret = NULL;
for (i = 0; i < obj_bases->array_len; i++)
{
const type_info *typ = base_desc[i]->type_descriptor;
if (!strcmp(typ->mangled, dst->mangled))
{
/* compute the correct this pointer for that base class */
void *this_ptr = (char *)cppobj - obj_locator->base_class_offset;
ret = get_this_pointer( &base_desc[i]->offsets, this_ptr );
break;
}
}
/* VC++ sets do_throw to 1 when the result of a dynamic_cast is assigned
* to a reference, since references cannot be NULL.
*/
if (!ret && do_throw)
{
const char *msg = "Bad dynamic_cast!";
bad_cast e;
MSVCRT_bad_cast_ctor( &e, &msg );
_CxxThrowException( &e, &bad_cast_exception_type );
}
}
__EXCEPT_PAGE_FAULT
{
__non_rtti_object e;
MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__ENDTRY
return ret;
}
#else
void* CDECL MSVCRT___RTDynamicCast(void *cppobj, int unknown,
type_info *src, type_info *dst,
int do_throw)
{
void *ret;
if (!cppobj) return NULL;
TRACE("obj: %p unknown: %d src: %p %s dst: %p %s do_throw: %d)\n",
cppobj, unknown, src, dbgstr_type_info(src), dst, dbgstr_type_info(dst), do_throw);
__TRY
{
int i;
const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
const rtti_object_hierarchy *obj_bases;
const rtti_base_array *base_array;
char *base;
if (TRACE_ON(msvcrt)) dump_obj_locator(obj_locator);
if(obj_locator->signature == 0)
base = (char*)RtlPcToFileHeader((void*)obj_locator, (void**)&base);
else
base = (char*)obj_locator - obj_locator->object_locator;
obj_bases = (const rtti_object_hierarchy*)(base + obj_locator->type_hierarchy);
base_array = (const rtti_base_array*)(base + obj_bases->base_classes);
ret = NULL;
for (i = 0; i < obj_bases->array_len; i++)
{
const rtti_base_descriptor *base_desc = (const rtti_base_descriptor*)(base + base_array->bases[i]);
const type_info *typ = (const type_info*)(base + base_desc->type_descriptor);
if (!strcmp(typ->mangled, dst->mangled))
{
void *this_ptr = (char *)cppobj - obj_locator->base_class_offset;
ret = get_this_pointer( &base_desc->offsets, this_ptr );
break;
}
}
if (!ret && do_throw)
{
const char *msg = "Bad dynamic_cast!";
bad_cast e;
MSVCRT_bad_cast_ctor( &e, &msg );
_CxxThrowException( &e, &bad_cast_exception_type );
}
}
__EXCEPT_PAGE_FAULT
{
__non_rtti_object e;
MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__ENDTRY
return ret;
}
#endif
/******************************************************************
* __RTCastToVoid (MSVCRT.@)
*
* Dynamically cast a C++ object to a void*.
*
* PARAMS
* cppobj [I] The C++ object to cast
*
* RETURNS
* Success: The base address of the object as a void*.
* Failure: NULL, if cppobj is NULL or has no RTTI.
*
* NOTES
* This function is usually called by compiler generated code as a result
* of using one of the C++ dynamic cast statements.
*/
void* CDECL MSVCRT___RTCastToVoid(void *cppobj)
{
void *ret;
if (!cppobj) return NULL;
__TRY
{
const rtti_object_locator *obj_locator = get_obj_locator( cppobj );
ret = (char *)cppobj - obj_locator->base_class_offset;
}
__EXCEPT_PAGE_FAULT
{
__non_rtti_object e;
MSVCRT___non_rtti_object_ctor( &e, "Access violation - no RTTI data!" );
_CxxThrowException( &e, &bad_typeid_exception_type );
return NULL;
}
__ENDTRY
return ret;
}
/*********************************************************************
* _CxxThrowException (MSVCRT.@)
*/
void WINAPI _CxxThrowException( exception *object, const cxx_exception_type *type )
{
ULONG_PTR args[3];
args[0] = CXX_FRAME_MAGIC_VC6;
args[1] = (ULONG_PTR)object;
args[2] = (ULONG_PTR)type;
RaiseException( CXX_EXCEPTION, EH_NONCONTINUABLE, 3, args );
}
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