541 lines
16 KiB
C
541 lines
16 KiB
C
/*
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* msvcrt.dll C++ objects
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*
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* Copyright 2000 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "msvcrt.h"
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#include "msvcrt/eh.h"
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#include "msvcrt/stdlib.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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typedef void (*v_table_ptr)();
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static v_table_ptr exception_vtable[2];
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static v_table_ptr bad_typeid_vtable[3];
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static v_table_ptr __non_rtti_object_vtable[3];
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static v_table_ptr bad_cast_vtable[3];
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static v_table_ptr type_info_vtable[1];
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typedef struct __exception
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{
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v_table_ptr *vtable;
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const char *name;
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int do_free; /* FIXME: take string copy with char* ctor? */
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} exception;
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typedef struct __bad_typeid
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{
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exception base;
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} bad_typeid;
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typedef struct ____non_rtti_object
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{
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bad_typeid base;
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} __non_rtti_object;
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typedef struct __bad_cast
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{
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exception base;
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} bad_cast;
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typedef struct __type_info
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{
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v_table_ptr *vtable;
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void *data;
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char name[1];
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} type_info;
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typedef struct _rtti_base_descriptor
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{
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type_info *type_descriptor;
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int num_base_classes;
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int base_class_offset;
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unsigned int flags;
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} rtti_base_descriptor;
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typedef struct _rtti_base_array
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{
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rtti_base_descriptor *bases[1]; /* First element is the class itself */
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} rtti_base_array;
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typedef struct _rtti_object_hierachy
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{
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int unknown1;
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int unknown2;
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int array_len; /* Size of the array pointed to by 'base_classes' */
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rtti_base_array *base_classes;
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} rtti_object_hierachy;
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typedef struct _rtti_object_locator
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{
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int unknown1;
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int base_class_offset;
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unsigned int flags;
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type_info *type_descriptor;
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rtti_object_hierachy *type_hierachy;
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} rtti_object_locator;
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/******************************************************************
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* ??0exception@@QAE@ABQBD@Z (MSVCRT.@)
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*/
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void MSVCRT_exception_ctor(exception * _this, const char ** name)
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{
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TRACE("(%p %s)\n",_this,*name);
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_this->vtable = exception_vtable;
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_this->name = *name;
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TRACE("name = %s\n",_this->name);
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_this->do_free = 0; /* FIXME */
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}
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/******************************************************************
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* ??0exception@@QAE@ABV0@@Z (MSVCRT.@)
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*/
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void MSVCRT_exception_copy_ctor(exception * _this, const exception * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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if (_this != rhs)
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memcpy (_this, rhs, sizeof (*_this));
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TRACE("name = %s\n",_this->name);
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}
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/******************************************************************
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* ??0exception@@QAE@XZ (MSVCRT.@)
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*/
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void MSVCRT_exception_default_ctor(exception * _this)
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{
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TRACE("(%p)\n",_this);
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_this->vtable = exception_vtable;
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_this->name = "";
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_this->do_free = 0; /* FIXME */
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}
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/******************************************************************
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* ??1exception@@UAE@XZ (MSVCRT.@)
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*/
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void MSVCRT_exception_dtor(exception * _this)
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{
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TRACE("(%p)\n",_this);
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}
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/******************************************************************
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* ??4exception@@QAEAAV0@ABV0@@Z (MSVCRT.@)
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*/
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exception * MSVCRT_exception_opequals(exception * _this, const exception * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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memcpy (_this, rhs, sizeof (*_this));
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TRACE("name = %s\n",_this->name);
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return _this;
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}
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/******************************************************************
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* ??_Eexception@@UAEPAXI@Z (MSVCRT.@)
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*/
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void * MSVCRT_exception__unknown_E(exception * _this, unsigned int arg1)
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{
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TRACE("(%p %d)\n",_this,arg1);
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_purecall();
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return NULL;
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}
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/******************************************************************
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* ??_Gexception@@UAEPAXI@Z (MSVCRT.@)
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*/
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void * MSVCRT_exception__unknown_G(exception * _this, unsigned int arg1)
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{
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TRACE("(%p %d)\n",_this,arg1);
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_purecall();
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return NULL;
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}
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/******************************************************************
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* ?what@exception@@UBEPBDXZ (MSVCRT.@)
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*/
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const char * MSVCRT_what_exception(exception * _this)
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{
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TRACE("(%p) returning %s\n",_this,_this->name);
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return _this->name;
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}
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/******************************************************************
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* ?set_terminate@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
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*/
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terminate_function MSVCRT_set_terminate(terminate_function func)
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{
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MSVCRT_thread_data *data = msvcrt_get_thread_data();
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terminate_function previous = data->terminate_handler;
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TRACE("(%p) returning %p\n",func,previous);
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data->terminate_handler = func;
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return previous;
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}
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/******************************************************************
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* ?set_unexpected@@YAP6AXXZP6AXXZ@Z (MSVCRT.@)
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*/
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unexpected_function MSVCRT_set_unexpected(unexpected_function func)
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{
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MSVCRT_thread_data *data = msvcrt_get_thread_data();
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unexpected_function previous = data->unexpected_handler;
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TRACE("(%p) returning %p\n",func,previous);
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data->unexpected_handler = func;
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return previous;
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}
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/******************************************************************
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* ?_set_se_translator@@YAP6AXIPAU_EXCEPTION_POINTERS@@@ZP6AXI0@Z@Z (MSVCRT.@)
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*/
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_se_translator_function MSVCRT__set_se_translator(_se_translator_function func)
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{
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MSVCRT_thread_data *data = msvcrt_get_thread_data();
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_se_translator_function previous = data->se_translator;
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TRACE("(%p) returning %p\n",func,previous);
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data->se_translator = func;
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return previous;
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}
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/******************************************************************
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* ?terminate@@YAXXZ (MSVCRT.@)
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*/
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void MSVCRT_terminate(void)
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{
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MSVCRT_thread_data *data = msvcrt_get_thread_data();
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if (data->terminate_handler) data->terminate_handler();
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MSVCRT_abort();
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}
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/******************************************************************
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* ?unexpected@@YAXXZ (MSVCRT.@)
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*/
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void MSVCRT_unexpected(void)
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{
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MSVCRT_thread_data *data = msvcrt_get_thread_data();
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if (data->unexpected_handler) data->unexpected_handler();
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MSVCRT_terminate();
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}
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/******************************************************************
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* ??0bad_typeid@@QAE@ABV0@@Z (MSVCRT.@)
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*/
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void MSVCRT_bad_typeid_copy_ctor(bad_typeid * _this, const bad_typeid * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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MSVCRT_exception_copy_ctor(&_this->base,&rhs->base);
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}
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/******************************************************************
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* ??0bad_typeid@@QAE@PBD@Z (MSVCRT.@)
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*/
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void MSVCRT_bad_typeid_ctor(bad_typeid * _this, const char * name)
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{
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TRACE("(%p %s)\n",_this,name);
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MSVCRT_exception_ctor(&_this->base, &name);
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_this->base.vtable = bad_typeid_vtable;
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}
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/******************************************************************
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* ??1bad_typeid@@UAE@XZ (MSVCRT.@)
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*/
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void MSVCRT_bad_typeid_dtor(bad_typeid * _this)
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{
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TRACE("(%p)\n",_this);
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MSVCRT_exception_dtor(&_this->base);
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}
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/******************************************************************
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* ??4bad_typeid@@QAEAAV0@ABV0@@Z (MSVCRT.@)
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*/
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bad_typeid * MSVCRT_bad_typeid_opequals(bad_typeid * _this, const bad_typeid * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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MSVCRT_exception_copy_ctor(&_this->base,&rhs->base);
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return _this;
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}
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/******************************************************************
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* ??0__non_rtti_object@@QAE@ABV0@@Z (MSVCRT.@)
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*/
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void MSVCRT___non_rtti_object_copy_ctor(__non_rtti_object * _this,
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const __non_rtti_object * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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MSVCRT_bad_typeid_copy_ctor(&_this->base,&rhs->base);
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}
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/******************************************************************
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* ??0__non_rtti_object@@QAE@PBD@Z (MSVCRT.@)
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*/
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void MSVCRT___non_rtti_object_ctor(__non_rtti_object * _this,
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const char * name)
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{
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TRACE("(%p %s)\n",_this,name);
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MSVCRT_bad_typeid_ctor(&_this->base,name);
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_this->base.base.vtable = __non_rtti_object_vtable;
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}
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/******************************************************************
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* ??1__non_rtti_object@@UAE@XZ (MSVCRT.@)
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*/
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void MSVCRT___non_rtti_object_dtor(__non_rtti_object * _this)
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{
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TRACE("(%p)\n",_this);
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MSVCRT_bad_typeid_dtor(&_this->base);
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}
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/******************************************************************
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* ??4__non_rtti_object@@QAEAAV0@ABV0@@Z (MSVCRT.@)
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*/
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__non_rtti_object * MSVCRT___non_rtti_object_opequals(__non_rtti_object * _this,
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const __non_rtti_object *rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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memcpy (_this, rhs, sizeof (*_this));
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TRACE("name = %s\n",_this->base.base.name);
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return _this;
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}
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/******************************************************************
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* ??_E__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
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*/
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void * MSVCRT___non_rtti_object__unknown_E(__non_rtti_object * _this, unsigned int arg1)
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{
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TRACE("(%p %d)\n",_this,arg1);
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_purecall();
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return NULL;
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}
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/******************************************************************
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* ??_G__non_rtti_object@@UAEPAXI@Z (MSVCRT.@)
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*/
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void * MSVCRT___non_rtti_object__unknown_G(__non_rtti_object * _this, unsigned int arg1)
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{
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TRACE("(%p %d)\n",_this,arg1);
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_purecall();
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return NULL;
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}
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/******************************************************************
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* ??0bad_cast@@QAE@ABQBD@Z (MSVCRT.@)
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*/
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void MSVCRT_bad_cast_ctor(bad_cast * _this, const char ** name)
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{
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TRACE("(%p %s)\n",_this,*name);
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MSVCRT_exception_ctor(&_this->base, name);
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_this->base.vtable = bad_cast_vtable;
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}
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/******************************************************************
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* ??0bad_cast@@QAE@ABV0@@Z (MSVCRT.@)
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*/
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void MSVCRT_bad_cast_copy_ctor(bad_cast * _this, const bad_cast * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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MSVCRT_exception_copy_ctor(&_this->base,&rhs->base);
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}
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/******************************************************************
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* ??1bad_cast@@UAE@XZ (MSVCRT.@)
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*/
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void MSVCRT_bad_cast_dtor(bad_cast * _this)
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{
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TRACE("(%p)\n",_this);
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MSVCRT_exception_dtor(&_this->base);
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}
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/******************************************************************
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* ??4bad_cast@@QAEAAV0@ABV0@@Z (MSVCRT.@)
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*/
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bad_cast * MSVCRT_bad_cast_opequals(bad_cast * _this, const bad_cast * rhs)
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{
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TRACE("(%p %p)\n",_this,rhs);
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MSVCRT_exception_copy_ctor(&_this->base,&rhs->base);
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return _this;
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}
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/******************************************************************
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* ??8type_info@@QBEHABV0@@Z (MSVCRT.@)
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*/
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int __stdcall MSVCRT_type_info_opequals_equals(type_info * _this, const type_info * rhs)
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{
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TRACE("(%p %p) returning %d\n",_this,rhs,_this->name == rhs->name);
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return _this->name == rhs->name;
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}
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/******************************************************************
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* ??9type_info@@QBEHABV0@@Z (MSVCRT.@)
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*/
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int __stdcall MSVCRT_type_info_opnot_equals(type_info * _this, const type_info * rhs)
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{
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TRACE("(%p %p) returning %d\n",_this,rhs,_this->name == rhs->name);
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return _this->name != rhs->name;
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}
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/******************************************************************
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* ??1type_info@@UAE@XZ (MSVCRT.@)
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*/
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void MSVCRT_type_info_dtor(type_info * _this)
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{
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TRACE("(%p)\n",_this);
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if (_this->data)
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MSVCRT_free(_this->data);
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}
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/******************************************************************
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* ?name@type_info@@QBEPBDXZ (MSVCRT.@)
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*/
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const char * __stdcall MSVCRT_type_info_name(type_info * _this)
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{
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TRACE("(%p) returning %s\n",_this,_this->name);
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return _this->name;
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}
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/******************************************************************
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* ?raw_name@type_info@@QBEPBDXZ (MSVCRT.@)
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*/
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const char * __stdcall MSVCRT_type_info_raw_name(type_info * _this)
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{
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TRACE("(%p) returning %s\n",_this,_this->name);
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return _this->name;
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}
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/******************************************************************
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* __RTtypeid (MSVCRT.@)
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*/
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type_info* MSVCRT___RTtypeid(type_info *cppobj)
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{
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/* Note: cppobj _isn't_ a type_info, we use that struct for its vtable ptr */
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TRACE("(%p)\n",cppobj);
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if (!IsBadReadPtr(cppobj, sizeof(void *)) &&
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!IsBadReadPtr(cppobj->vtable - 1,sizeof(void *)) &&
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!IsBadReadPtr((void*)cppobj->vtable[-1], sizeof(rtti_object_locator)))
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{
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rtti_object_locator *obj_locator = (rtti_object_locator *)cppobj->vtable[-1];
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return obj_locator->type_descriptor;
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}
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/* FIXME: throw a C++ exception */
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FIXME("Should throw(bad_typeid). Creating NULL reference, expect crash!\n");
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return NULL;
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}
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/******************************************************************
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* __RTDynamicCast (MSVCRT.@)
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*/
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void* MSVCRT___RTDynamicCast(type_info *cppobj, int unknown,
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type_info *src, type_info *dst,
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int do_throw)
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{
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/* Note: cppobj _isn't_ a type_info, we use that struct for its vtable ptr */
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TRACE("(%p,%d,%p,%p,%d)\n",cppobj, unknown, src, dst, do_throw);
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if (unknown)
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FIXME("Unknown prameter is non-zero: please report\n");
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/* To cast an object at runtime:
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* 1.Find out the true type of the object from the typeinfo at vtable[-1]
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* 2.Search for the destination type in the class heirachy
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* 3.If destination type is found, return base object address + dest offset
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* Otherwise, fail the cast
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*/
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if (!IsBadReadPtr(cppobj, sizeof(void *)) &&
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!IsBadReadPtr(cppobj->vtable - 1,sizeof(void *)) &&
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!IsBadReadPtr((void*)cppobj->vtable[-1], sizeof(rtti_object_locator)))
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{
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int count = 0;
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rtti_object_locator *obj_locator = (rtti_object_locator *)cppobj->vtable[-1];
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rtti_object_hierachy *obj_bases = obj_locator->type_hierachy;
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rtti_base_descriptor **base_desc = obj_bases->base_classes->bases;
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int src_offset = obj_locator->base_class_offset, dst_offset = -1;
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while (count < obj_bases->array_len)
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{
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type_info *typ = (*base_desc)->type_descriptor;
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if (!strcmp(typ->name, dst->name))
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{
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dst_offset = (*base_desc)->base_class_offset;
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break;
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}
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base_desc++;
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count++;
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}
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if (dst_offset >= 0)
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return (void*)((unsigned long)cppobj - src_offset + dst_offset);
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}
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/* VC++ sets do_throw to 1 when the result of a dynamic_cast is assigned
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* to a reference, since references cannot be NULL.
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*/
|
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if (do_throw)
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FIXME("Should throw(bad_cast). Creating NULL reference, expect crash!\n");
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return NULL;
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}
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|
|
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/******************************************************************
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* __RTCastToVoid (MSVCRT.@)
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*/
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void* MSVCRT___RTCastToVoid(type_info *cppobj)
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{
|
|
/* 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 (!IsBadReadPtr(cppobj, sizeof(void *)) &&
|
|
!IsBadReadPtr(cppobj->vtable - 1,sizeof(void *)) &&
|
|
!IsBadReadPtr((void*)cppobj->vtable[-1], sizeof(rtti_object_locator)))
|
|
{
|
|
rtti_object_locator *obj_locator = (rtti_object_locator *)cppobj->vtable[-1];
|
|
int src_offset = obj_locator->base_class_offset;
|
|
|
|
return (void*)((unsigned long)cppobj - src_offset);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* INTERNAL: Set up vtables
|
|
* FIXME:should be static, cope with versions?
|
|
*/
|
|
void msvcrt_init_vtables(void)
|
|
{
|
|
exception_vtable[0] = MSVCRT_exception_dtor;
|
|
exception_vtable[1] = (void*)MSVCRT_what_exception;
|
|
|
|
bad_typeid_vtable[0] = MSVCRT_bad_typeid_dtor;
|
|
bad_typeid_vtable[1] = exception_vtable[1];
|
|
bad_typeid_vtable[2] = _purecall; /* FIXME */
|
|
|
|
__non_rtti_object_vtable[0] = MSVCRT___non_rtti_object_dtor;
|
|
__non_rtti_object_vtable[1] = bad_typeid_vtable[1];
|
|
__non_rtti_object_vtable[2] = bad_typeid_vtable[2];
|
|
|
|
bad_cast_vtable[0] = MSVCRT_bad_cast_dtor;
|
|
bad_cast_vtable[1] = exception_vtable[1];
|
|
bad_cast_vtable[2] = _purecall; /* FIXME */
|
|
|
|
type_info_vtable[0] = MSVCRT_type_info_dtor;
|
|
|
|
}
|