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wine/dlls/msvcrt/cpp.c
Alexandre Julliard 21548cf02b Fixed spelling of 'hierarchy'.
2004-10-14 03:11:52 +00:00

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/*
* msvcrt.dll C++ objects
*
* Copyright 2000 Jon Griffiths
* Copyright 2003 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "wine/exception.h"
#include "excpt.h"
#include "wine/debug.h"
#include "msvcrt.h"
#include "cppexcept.h"
#include "mtdll.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
/*
* exception object: base for exception, bad_cast, bad_typeid, __non_rtti_object
*/
typedef struct
{
void* pfn_vector_dtor;
void* pfn_what;
} exception_vtable;
typedef struct __exception
{
const exception_vtable *vtable;
char *name; /* Name of this exception, always a new copy for each object */
int do_free; /* Whether to free 'name' in our dtor */
} exception;
typedef exception bad_cast;
typedef exception bad_typeid;
typedef exception __non_rtti_object;
typedef struct _rtti_base_descriptor
{
type_info *type_descriptor;
int num_base_classes;
int base_class_offset;
unsigned int flags;
int unknown1;
int unknown2;
} rtti_base_descriptor;
typedef struct _rtti_base_array
{
const rtti_base_descriptor *bases[3]; /* First element is the class itself */
} rtti_base_array;
typedef struct _rtti_object_hierarchy
{
int unknown1;
int unknown2;
int array_len; /* Size of the array pointed to by 'base_classes' */
const rtti_base_array *base_classes;
} rtti_object_hierarchy;
typedef struct _rtti_object_locator
{
int unknown1;
int base_class_offset;
unsigned int flags;
type_info *type_descriptor;
const rtti_object_hierarchy *type_hierarchy;
} rtti_object_locator;
#ifdef __i386__ /* thiscall functions are i386-specific */
#define DEFINE_THISCALL_WRAPPER(func) \
extern void __thiscall_ ## func(); \
__ASM_GLOBAL_FUNC(__thiscall_ ## func, \
"popl %eax\n\t" \
"pushl %ecx\n\t" \
"pushl %eax\n\t" \
"jmp " __ASM_NAME(#func) )
const exception_vtable MSVCRT_exception_vtable;
const exception_vtable MSVCRT_bad_typeid_vtable;
const exception_vtable MSVCRT_bad_cast_vtable;
const exception_vtable MSVCRT___non_rtti_object_vtable;
static const exception_vtable MSVCRT_type_info_vtable;
/* Internal common ctor for exception */
static void WINAPI EXCEPTION_ctor(exception *_this, const char** name)
{
_this->vtable = &MSVCRT_exception_vtable;
if (*name)
{
size_t 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);
exception * __stdcall MSVCRT_exception_ctor(exception * _this, const char ** name)
{
TRACE("(%p,%s)\n", _this, *name);
EXCEPTION_ctor(_this, name);
return _this;
}
/******************************************************************
* ??0exception@@QAE@ABV0@@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_exception_copy_ctor);
exception * __stdcall 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);
exception * __stdcall 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);
void __stdcall 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);
exception * __stdcall 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);
void * __stdcall 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 i, *ptr = (int *)_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);
void * __stdcall 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);
const char * __stdcall 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);
bad_typeid * __stdcall 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);
bad_typeid * __stdcall 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;
}
/******************************************************************
* ??1bad_typeid@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_typeid_dtor);
void __stdcall 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);
bad_typeid * __stdcall 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);
void * __stdcall 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 i, *ptr = (int *)_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);
void * __stdcall 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);
__non_rtti_object * __stdcall 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);
__non_rtti_object * __stdcall 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);
void __stdcall 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);
__non_rtti_object * __stdcall 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);
void * __stdcall 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 i, *ptr = (int *)_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);
void * __stdcall 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@@QAE@ABQBD@Z (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_ctor);
bad_cast * __stdcall 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);
bad_cast * __stdcall 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;
}
/******************************************************************
* ??1bad_cast@@UAE@XZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_bad_cast_dtor);
void __stdcall 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);
bad_cast * __stdcall 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);
void * __stdcall 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 i, *ptr = (int *)_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);
void * __stdcall 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);
int __stdcall 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);
int __stdcall 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);
int __stdcall 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);
void __stdcall MSVCRT_type_info_dtor(type_info * _this)
{
TRACE("(%p)\n", _this);
if (_this->name)
MSVCRT_free(_this->name);
}
/******************************************************************
* ?name@type_info@@QBEPBDXZ (MSVCRT.@)
*/
DEFINE_THISCALL_WRAPPER(MSVCRT_type_info_name);
const char * __stdcall MSVCRT_type_info_name(type_info * _this)
{
if (!_this->name)
{
/* Create and set the demangled name */
char* name = __unDName(0, _this->mangled, 0,
(malloc_func_t)MSVCRT_malloc,
(free_func_t)MSVCRT_free, 0x2800);
if (name)
{
unsigned int len = strlen(name);
/* It seems _unDName may leave blanks at the end of the demangled name */
if (name[len] == ' ')
name[len] = '\0';
_mlock(_EXIT_LOCK2);
if (_this->name)
{
/* Another thread set this member since we checked above - use it */
MSVCRT_free(name);
}
else
_this->name = name;
_munlock(_EXIT_LOCK2);
}
}
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);
const char * __stdcall 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);
void * __stdcall 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 i, *ptr = (int *)_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;
}
/* vtables */
const exception_vtable MSVCRT_exception_vtable =
{
__thiscall_MSVCRT_exception_vector_dtor,
__thiscall_MSVCRT_what_exception
};
const exception_vtable MSVCRT_bad_typeid_vtable =
{
__thiscall_MSVCRT_bad_typeid_vector_dtor,
__thiscall_MSVCRT_what_exception
};
const exception_vtable MSVCRT_bad_cast_vtable =
{
__thiscall_MSVCRT_bad_cast_vector_dtor,
__thiscall_MSVCRT_what_exception
};
const exception_vtable MSVCRT___non_rtti_object_vtable =
{
__thiscall_MSVCRT___non_rtti_object_vector_dtor,
__thiscall_MSVCRT_what_exception
};
static const exception_vtable MSVCRT_type_info_vtable =
{
__thiscall_MSVCRT_type_info_vector_dtor,
NULL
};
/* Static RTTI for exported objects */
static type_info exception_type_info =
{
(void*)&MSVCRT_type_info_vtable,
NULL,
".?AVexception@@"
};
static const rtti_base_descriptor exception_rtti_base_descriptor =
{
&exception_type_info,
0,
0,
0,
0,
0
};
static const rtti_base_array exception_rtti_base_array =
{
{
&exception_rtti_base_descriptor,
NULL,
NULL
}
};
static const rtti_object_hierarchy exception_type_hierarchy =
{
0,
0,
1,
&exception_rtti_base_array
};
static const rtti_object_locator exception_rtti =
{
0,
0,
0,
&exception_type_info,
&exception_type_hierarchy
};
static const cxx_type_info exception_cxx_type_info =
{
0,
&exception_type_info,
0,
-1,
0,
sizeof(exception),
(cxx_copy_ctor)__thiscall_MSVCRT_exception_copy_ctor
};
static type_info bad_typeid_type_info =
{
(void*)&MSVCRT_type_info_vtable,
NULL,
".?AVbad_typeid@@"
};
static const rtti_base_descriptor bad_typeid_rtti_base_descriptor =
{
&bad_typeid_type_info,
1,
0,
0xffffffff,
0,
0
};
static const rtti_base_array bad_typeid_rtti_base_array =
{
{
&bad_typeid_rtti_base_descriptor,
&exception_rtti_base_descriptor,
NULL
}
};
static const rtti_object_hierarchy bad_typeid_type_hierarchy =
{
0,
0,
2,
&bad_typeid_rtti_base_array
};
static const rtti_object_locator bad_typeid_rtti =
{
0,
0,
0,
&bad_typeid_type_info,
&bad_typeid_type_hierarchy
};
static const cxx_type_info bad_typeid_cxx_type_info =
{
0,
&bad_typeid_type_info,
0,
-1,
0,
sizeof(exception),
(cxx_copy_ctor)__thiscall_MSVCRT_bad_typeid_copy_ctor
};
static type_info bad_cast_type_info =
{
(void*)&MSVCRT_type_info_vtable,
NULL,
".?AVbad_cast@@"
};
static const rtti_base_descriptor bad_cast_rtti_base_descriptor =
{
&bad_cast_type_info,
1,
0,
0xffffffff,
0,
0
};
static const rtti_base_array bad_cast_rtti_base_array =
{
{
&bad_cast_rtti_base_descriptor,
&exception_rtti_base_descriptor,
NULL
}
};
static const rtti_object_hierarchy bad_cast_type_hierarchy =
{
0,
0,
2,
&bad_cast_rtti_base_array
};
static const rtti_object_locator bad_cast_rtti =
{
0,
0,
0,
&bad_cast_type_info,
&bad_cast_type_hierarchy
};
static const cxx_type_info bad_cast_cxx_type_info =
{
0,
&bad_cast_type_info,
0,
-1,
0,
sizeof(exception),
(cxx_copy_ctor)__thiscall_MSVCRT_bad_cast_copy_ctor
};
static type_info __non_rtti_object_type_info =
{
(void*)&MSVCRT_type_info_vtable,
NULL,
".?AV__non_rtti_object@@"
};
static const rtti_base_descriptor __non_rtti_object_rtti_base_descriptor =
{
&__non_rtti_object_type_info,
2,
0,
0xffffffff,
0,
0
};
static const rtti_base_array __non_rtti_object_rtti_base_array =
{
{
&__non_rtti_object_rtti_base_descriptor,
&bad_typeid_rtti_base_descriptor,
&exception_rtti_base_descriptor
}
};
static const rtti_object_hierarchy __non_rtti_object_type_hierarchy =
{
0,
0,
3,
&__non_rtti_object_rtti_base_array
};
static const rtti_object_locator __non_rtti_object_rtti =
{
0,
0,
0,
&__non_rtti_object_type_info,
&__non_rtti_object_type_hierarchy
};
static const cxx_type_info __non_rtti_object_cxx_type_info =
{
0,
&__non_rtti_object_type_info,
0,
-1,
0,
sizeof(exception),
(cxx_copy_ctor)__thiscall_MSVCRT___non_rtti_object_copy_ctor
};
static type_info type_info_type_info =
{
(void*)&MSVCRT_type_info_vtable,
NULL,
".?AVtype_info@@"
};
static const rtti_base_descriptor type_info_rtti_base_descriptor =
{
&type_info_type_info,
0,
0,
0xffffffff,
0,
0
};
static const rtti_base_array type_info_rtti_base_array =
{
{
&type_info_rtti_base_descriptor,
NULL,
NULL
}
};
static const rtti_object_hierarchy type_info_type_hierarchy =
{
0,
0,
1,
&type_info_rtti_base_array
};
static const rtti_object_locator type_info_rtti =
{
0,
0,
0,
&type_info_type_info,
&type_info_type_hierarchy
};
/*
* Exception RTTI for cpp objects
*/
static const cxx_type_info_table bad_cast_type_info_table =
{
3,
{
&__non_rtti_object_cxx_type_info,
&bad_typeid_cxx_type_info,
&exception_cxx_type_info
}
};
static const cxx_exception_type bad_cast_exception_type =
{
0,
(void*)__thiscall_MSVCRT_bad_cast_dtor,
NULL,
&bad_cast_type_info_table
};
static const cxx_type_info_table bad_typeid_type_info_table =
{
2,
{
&bad_cast_cxx_type_info,
&exception_cxx_type_info,
NULL
}
};
static const cxx_exception_type bad_typeid_exception_type =
{
0,
(void*)__thiscall_MSVCRT_bad_typeid_dtor,
NULL,
&bad_cast_type_info_table
};
static const cxx_exception_type __non_rtti_object_exception_type =
{
0,
(void*)__thiscall_MSVCRT___non_rtti_object_dtor,
NULL,
&bad_typeid_type_info_table
};
#endif /* __i386__ */
/******************************************************************
* ?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 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;
}
/******************************************************************
* ?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 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;
}
/******************************************************************
* ?_set_se_translator@@YAP6AXIPAU_EXCEPTION_POINTERS@@@ZP6AXI0@Z@Z (MSVCRT.@)
*/
MSVCRT__se_translator_function 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 MSVCRT_terminate(void)
{
thread_data_t *data = msvcrt_get_thread_data();
if (data->terminate_handler) data->terminate_handler();
MSVCRT_abort();
}
/******************************************************************
* ?unexpected@@YAXXZ (MSVCRT.@)
*/
void MSVCRT_unexpected(void)
{
thread_data_t *data = msvcrt_get_thread_data();
if (data->unexpected_handler) data->unexpected_handler();
MSVCRT_terminate();
}
/* Get type info from an object (internal) */
static const rtti_object_locator* RTTI_GetObjectLocator(type_info *cppobj)
{
const rtti_object_locator *obj_locator = NULL;
#ifdef __i386__
const exception_vtable* vtable = (const exception_vtable*)cppobj->vtable;
/* Perhaps this is one of classes we export? */
if (vtable == &MSVCRT_exception_vtable)
{
TRACE("returning exception_rtti\n");
return &exception_rtti;
}
else if (vtable == &MSVCRT_bad_typeid_vtable)
{
TRACE("returning bad_typeid_rtti\n");
return &bad_typeid_rtti;
}
else if (vtable == &MSVCRT_bad_cast_vtable)
{
TRACE("returning bad_cast_rtti\n");
return &bad_cast_rtti;
}
else if (vtable == &MSVCRT___non_rtti_object_vtable)
{
TRACE("returning __non_rtti_object_rtti\n");
return &__non_rtti_object_rtti;
}
else if (vtable == &MSVCRT_type_info_vtable)
{
TRACE("returning type_info_rtti\n");
return &type_info_rtti;
}
#endif
if (!IsBadReadPtr(cppobj, sizeof(void *)) &&
!IsBadReadPtr(cppobj->vtable - 1,sizeof(void *)) &&
!IsBadReadPtr((void*)cppobj->vtable[-1], sizeof(rtti_object_locator)))
{
obj_locator = (rtti_object_locator *)cppobj->vtable[-1];
TRACE("returning type_info from vtable (%p)\n", obj_locator);
}
return obj_locator;
}
/******************************************************************
* __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.
*/
type_info* MSVCRT___RTtypeid(type_info *cppobj)
{
const rtti_object_locator *obj_locator = RTTI_GetObjectLocator(cppobj);
#ifdef __i386__
if (!obj_locator)
{
static const char* szNullPtr = "Attempted a typeid of NULL pointer!";
static const char* szBadPtr = "Bad read pointer - no RTTI data!";
const cxx_exception_type *e_type;
exception e;
/* Throw a bad_typeid or __non_rtti_object exception */
if (!cppobj)
{
EXCEPTION_ctor(&e, &szNullPtr);
e.vtable = &MSVCRT_bad_typeid_vtable;
e_type = &bad_typeid_exception_type;
}
else
{
EXCEPTION_ctor(&e, &szBadPtr);
e.vtable = &MSVCRT___non_rtti_object_vtable;
e_type = &__non_rtti_object_exception_type;
}
_CxxThrowException(&e, e_type);
DebugBreak();
}
return obj_locator->type_descriptor;
#else
return NULL;
#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.
*/
void* MSVCRT___RTDynamicCast(type_info *cppobj, int unknown,
type_info *src, type_info *dst,
int do_throw)
{
const rtti_object_locator *obj_locator;
/* Note: cppobj _isn't_ a type_info, we use that struct for its vtable ptr */
TRACE("(%p,%d,%p,%p,%d)\n", cppobj, unknown, src, dst, do_throw);
if (!cppobj)
return 0;
obj_locator= RTTI_GetObjectLocator(cppobj);
if (unknown)
FIXME("Unknown parameter is non-zero: please report\n");
/* 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
*/
if (obj_locator)
{
int count = 0;
const rtti_object_hierarchy *obj_bases = obj_locator->type_hierarchy;
const rtti_base_descriptor **base_desc = obj_bases->base_classes->bases;
int src_offset = obj_locator->base_class_offset, dst_offset = -1;
while (count < obj_bases->array_len)
{
const type_info *typ = (*base_desc)->type_descriptor;
if (!strcmp(typ->mangled, dst->mangled))
{
dst_offset = (*base_desc)->base_class_offset;
break;
}
base_desc++;
count++;
}
if (dst_offset >= 0)
return (void*)((unsigned long)cppobj - src_offset + dst_offset);
}
#ifdef __i386__
/* VC++ sets do_throw to 1 when the result of a dynamic_cast is assigned
* to a reference, since references cannot be NULL.
*/
if (do_throw)
{
static const char* exception_text = "Bad dynamic_cast!";
exception e;
/* Throw a bad_cast exception */
EXCEPTION_ctor(&e, &exception_text);
e.vtable = &MSVCRT_bad_cast_vtable;
_CxxThrowException(&e, &bad_cast_exception_type);
DebugBreak();
}
#endif
return NULL;
}
/******************************************************************
* __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* MSVCRT___RTCastToVoid(type_info *cppobj)
{
const rtti_object_locator *obj_locator = RTTI_GetObjectLocator(cppobj);
/* Note: cppobj _isn't_ a type_info, we use that struct for its vtable ptr */
TRACE("(%p)\n", cppobj);
/* Casts to void* simply cast to the base object */
if (obj_locator)
return (void*)((unsigned long)cppobj - obj_locator->base_class_offset);
return NULL;
}
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