dlls/concrt140/concrt140.c

   1 /*
   2  * Copyright 2021 Piotr Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <malloc.h>
  20 #include <stdarg.h>
  21
  22 #include "msvcrt.h"
  23 #include "windef.h"
  24 #include "winternl.h"
  25 #include "wine/debug.h"
  26 #include "details.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(concrt);
  29
  30 CREATE_TYPE_INFO_VTABLE
  31 CREATE_EXCEPTION_OBJECT(exception)
  32
  33 static HMODULE msvcp140;
  34
  35 extern const vtable_ptr exception_vtable;
  36
  37 int CDECL _callnewh(size_t size);
  38 void (__cdecl *_Xmem)(void);
  39 void (__cdecl *_Xout_of_range)(const char*);
  40
  41 void* __cdecl operator_new(size_t size)
  42 {
  43     void *retval;
  44     int freed;
  45
  46     do
  47     {
  48         retval = malloc(size);
  49         if (retval)
  50         {
  51             TRACE("(%Iu) returning %p\n", size, retval);
  52             return retval;
  53         }
  54         freed = _callnewh(size);
  55     } while (freed);
  56
  57     TRACE("(%Iu) out of memory\n", size);
  58     _Xmem();
  59     return NULL;
  60 }
  61
  62 void __cdecl operator_delete(void *mem)
  63 {
  64     free(mem);
  65 }
  66
  67 typedef exception runtime_error;
  68 extern const vtable_ptr runtime_error_vtable;
  69
  70 DEFINE_THISCALL_WRAPPER(runtime_error_copy_ctor,8)
  71 runtime_error * __thiscall runtime_error_copy_ctor(runtime_error *this, const runtime_error *rhs)
  72 {
  73     return __exception_copy_ctor(this, rhs, &runtime_error_vtable);
  74 }
  75
  76 typedef exception range_error;
  77 extern const vtable_ptr range_error_vtable;
  78
  79 DEFINE_THISCALL_WRAPPER(range_error_copy_ctor,8)
  80 range_error * __thiscall range_error_copy_ctor(range_error *this, const range_error *rhs)
  81 {
  82     return __exception_copy_ctor(this, rhs, &range_error_vtable);
  83 }
  84
  85 __ASM_BLOCK_BEGIN(vtables)
  86 __ASM_VTABLE(runtime_error,
  87         VTABLE_ADD_FUNC(exception_vector_dtor)
  88         VTABLE_ADD_FUNC(exception_what));
  89 __ASM_VTABLE(range_error,
  90         VTABLE_ADD_FUNC(exception_vector_dtor)
  91         VTABLE_ADD_FUNC(exception_what));
  92 __ASM_BLOCK_END
  93
  94 DEFINE_CXX_DATA0( exception, exception_dtor )
  95 DEFINE_RTTI_DATA1(runtime_error, 0, &exception_rtti_base_descriptor, ".?AVruntime_error@std@@")
  96 DEFINE_CXX_TYPE_INFO(runtime_error)
  97 DEFINE_RTTI_DATA2(range_error, 0, &runtime_error_rtti_base_descriptor,
  98         &exception_rtti_base_descriptor, ".?AVrange_error@std@@")
  99 DEFINE_CXX_DATA2(range_error, &runtime_error_cxx_type_info,
 100         &exception_cxx_type_info, exception_dtor)
 101
 102 void DECLSPEC_NORETURN throw_range_error(const char *str)
 103 {
 104     range_error e;
 105     __exception_ctor(&e, str, &range_error_vtable);
 106     _CxxThrowException(&e, &range_error_exception_type);
 107 }
 108
 109 void DECLSPEC_NORETURN throw_exception(const char* msg)
 110 {
 111     exception e;
 112     __exception_ctor(&e, msg, &exception_vtable);
 113     _CxxThrowException(&e, &exception_exception_type);
 114 }
 115
 116 static BOOL init_cxx_funcs(void)
 117 {
 118     msvcp140 = LoadLibraryA("msvcp140.dll");
 119     if (!msvcp140)
 120     {
 121         FIXME("Failed to load msvcp140.dll\n");
 122         return FALSE;
 123     }
 124
 125     _Xmem = (void*)GetProcAddress(msvcp140, "?_Xbad_alloc@std@@YAXXZ");
 126     _Xout_of_range = (void*)GetProcAddress(msvcp140, sizeof(void*) > sizeof(int) ?
 127             "?_Xout_of_range@std@@YAXPEBD@Z" : "?_Xout_of_range@std@@YAXPBD@Z");
 128     if (!_Xmem || !_Xout_of_range)
 129     {
 130         FreeLibrary(msvcp140);
 131         return FALSE;
 132     }
 133
 134     return TRUE;
 135 }
 136
 137 BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved)
 138 {
 139    switch (reason)
 140    {
 141    case DLL_PROCESS_ATTACH:
 142        if (!init_cxx_funcs()) return FALSE;
 143 #ifdef RTTI_USE_RVA
 144        init_exception_rtti((char*)inst);
 145        init_range_error_rtti((char*)inst);
 146        init_runtime_error_rtti((char*)inst);
 147        init_type_info_rtti((char*)inst);
 148
 149        init_exception_cxx((char*)inst);
 150        init_runtime_error_cxx_type_info((char*)inst);
 151        init_range_error_cxx((char*)inst);
 152 #endif
 153        msvcrt_init_concurrency(inst);
 154        init_concurrency_details(inst);
 155        break;
 156    case DLL_PROCESS_DETACH:
 157        if (reserved) break;
 158        FreeLibrary(msvcp140);
 159        break;
 160    }
 161    return TRUE;
 162 }