forked from Mirrors/wine-wine
120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/*
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* vcruntime140_1 x86_64 C++ exception handling
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*
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* Copyright 2002 Alexandre Julliard
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* Copyright 2020 Piotr Caban
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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typedef void (*vtable_ptr)(void);
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/* type_info object, see cpp.c for implementation */
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typedef struct __type_info
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{
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const vtable_ptr *vtable;
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char *name; /* Unmangled name, allocated lazily */
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char mangled[64]; /* Variable length, but we declare it large enough for static RTTI */
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} type_info;
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typedef struct
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{
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int this_offset; /* offset of base class this pointer from start of object */
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int vbase_descr; /* offset of virtual base class descriptor */
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int vbase_offset; /* offset of this pointer offset in virtual base class descriptor */
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} this_ptr_offsets;
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/* complete information about a C++ type */
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typedef struct __cxx_type_info
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{
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UINT flags;
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unsigned int type_info;
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this_ptr_offsets offsets;
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unsigned int size;
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unsigned int copy_ctor;
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} cxx_type_info;
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#define CLASS_IS_SIMPLE_TYPE 1
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#define CLASS_HAS_VIRTUAL_BASE_CLASS 4
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/* table of C++ types that apply for a given object */
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typedef struct __cxx_type_info_table
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{
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UINT count;
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unsigned int info[3];
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} cxx_type_info_table;
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struct __cxx_exception_frame;
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struct __cxx_function_descr;
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/* type information for an exception object */
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typedef struct
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{
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UINT flags;
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unsigned int destructor;
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unsigned int custom_handler;
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unsigned int type_info_table;
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} cxx_exception_type;
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static inline const char *dbgstr_type_info( const type_info *info )
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{
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if (!info) return "{}";
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return wine_dbg_sprintf( "{vtable=%p name=%s (%s)}",
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info->vtable, info->mangled, info->name ? info->name : "" );
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}
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/* compute the this pointer for a base class of a given type */
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static inline void *get_this_pointer( const this_ptr_offsets *off, void *object )
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{
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if (!object) return NULL;
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if (off->vbase_descr >= 0)
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{
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int *offset_ptr;
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/* move this ptr to vbase descriptor */
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object = (char *)object + off->vbase_descr;
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/* and fetch additional offset from vbase descriptor */
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offset_ptr = (int *)(*(char **)object + off->vbase_offset);
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object = (char *)object + *offset_ptr;
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}
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object = (char *)object + off->this_offset;
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return object;
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}
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typedef void (__cdecl *_se_translator_function)(unsigned int code, struct _EXCEPTION_POINTERS *info);
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typedef struct _frame_info
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{
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void *object;
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struct _frame_info *next;
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} frame_info;
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typedef struct
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{
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frame_info frame_info;
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EXCEPTION_RECORD *rec;
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CONTEXT *context;
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} cxx_frame_info;
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BOOL __cdecl __CxxRegisterExceptionObject(EXCEPTION_POINTERS*, cxx_frame_info*);
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void __cdecl __CxxUnregisterExceptionObject(cxx_frame_info*, BOOL);
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void __cdecl __DestructExceptionObject(EXCEPTION_RECORD *rec);
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void** __cdecl __current_exception(void);
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int* __cdecl __processing_throw(void);
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void __cdecl terminate(void);
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