2012-03-13 15:40:27 +01:00
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/*
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* msvcrt C++ exception handling
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*
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* Copyright 2011 Alexandre Julliard
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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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#include "config.h"
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#include "wine/port.h"
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#ifdef __x86_64__
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#include <stdarg.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winternl.h"
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#include "msvcrt.h"
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#include "wine/exception.h"
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#include "excpt.h"
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#include "wine/debug.h"
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#include "cppexcept.h"
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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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2012-03-13 15:50:40 +01:00
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struct _DISPATCHER_CONTEXT;
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typedef LONG (WINAPI *PC_LANGUAGE_EXCEPTION_HANDLER)( EXCEPTION_POINTERS *ptrs, ULONG64 frame );
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typedef EXCEPTION_DISPOSITION (WINAPI *PEXCEPTION_ROUTINE)( EXCEPTION_RECORD *rec,
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ULONG64 frame,
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CONTEXT *context,
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struct _DISPATCHER_CONTEXT *dispatch );
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typedef struct _DISPATCHER_CONTEXT
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{
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ULONG64 ControlPc;
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ULONG64 ImageBase;
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PRUNTIME_FUNCTION FunctionEntry;
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ULONG64 EstablisherFrame;
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ULONG64 TargetIp;
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PCONTEXT ContextRecord;
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PEXCEPTION_ROUTINE LanguageHandler;
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PVOID HandlerData;
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PUNWIND_HISTORY_TABLE HistoryTable;
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ULONG ScopeIndex;
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} DISPATCHER_CONTEXT;
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2016-03-21 18:23:34 +01:00
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typedef struct
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{
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int prev;
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UINT handler;
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} unwind_info;
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typedef struct
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{
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UINT flags;
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UINT type_info;
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int offset;
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UINT handler;
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2016-03-28 20:11:50 +02:00
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UINT frame;
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2016-03-21 18:23:34 +01:00
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} catchblock_info;
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2016-03-28 20:11:50 +02:00
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#define TYPE_FLAG_CONST 1
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#define TYPE_FLAG_VOLATILE 2
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#define TYPE_FLAG_REFERENCE 8
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2016-03-21 18:23:34 +01:00
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typedef struct
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{
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int start_level;
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int end_level;
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int catch_level;
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int catchblock_count;
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UINT catchblock;
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} tryblock_info;
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2016-03-28 20:11:50 +02:00
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typedef struct
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{
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int ip;
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int state;
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} ipmap_info;
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2016-03-21 18:23:34 +01:00
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typedef struct __cxx_function_descr
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{
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UINT magic;
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UINT unwind_count;
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UINT unwind_table;
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UINT tryblock_count;
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UINT tryblock;
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UINT ipmap_count;
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UINT ipmap;
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UINT unwind_help;
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UINT expect_list;
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UINT flags;
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} cxx_function_descr;
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static inline void* rva_to_ptr(UINT rva, ULONG64 base)
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{
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return rva ? (void*)(base+rva) : NULL;
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}
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static inline void dump_type(UINT type_rva, ULONG64 base)
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{
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const cxx_type_info *type = rva_to_ptr(type_rva, base);
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TRACE("flags %x type %x %s offsets %d,%d,%d size %d copy ctor %x(%p)\n",
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type->flags, type->type_info, dbgstr_type_info(rva_to_ptr(type->type_info, base)),
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type->offsets.this_offset, type->offsets.vbase_descr, type->offsets.vbase_offset,
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type->size, type->copy_ctor, rva_to_ptr(type->copy_ctor, base));
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}
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static void dump_exception_type(const cxx_exception_type *type, ULONG64 base)
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{
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const cxx_type_info_table *type_info_table = rva_to_ptr(type->type_info_table, base);
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UINT i;
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TRACE("flags %x destr %x(%p) handler %x(%p) type info %x(%p)\n",
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type->flags, type->destructor, rva_to_ptr(type->destructor, base),
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type->custom_handler, rva_to_ptr(type->custom_handler, base),
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type->type_info_table, type_info_table);
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for (i = 0; i < type_info_table->count; i++)
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{
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TRACE(" %d: ", i);
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dump_type(type_info_table->info[i], base);
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}
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}
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static void dump_function_descr(const cxx_function_descr *descr, ULONG64 image_base)
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{
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unwind_info *unwind_table = rva_to_ptr(descr->unwind_table, image_base);
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tryblock_info *tryblock = rva_to_ptr(descr->tryblock, image_base);
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2016-03-28 20:11:50 +02:00
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ipmap_info *ipmap = rva_to_ptr(descr->ipmap, image_base);
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2016-03-21 18:23:34 +01:00
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UINT i, j;
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TRACE("magic %x\n", descr->magic);
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TRACE("unwind table: %x(%p) %d\n", descr->unwind_table, unwind_table, descr->unwind_count);
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for (i=0; i<descr->unwind_count; i++)
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{
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TRACE(" %d: prev %d func %x(%p)\n", i, unwind_table[i].prev,
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unwind_table[i].handler, rva_to_ptr(unwind_table[i].handler, image_base));
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}
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TRACE("try table: %x(%p) %d\n", descr->tryblock, tryblock, descr->tryblock_count);
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for (i=0; i<descr->tryblock_count; i++)
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{
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catchblock_info *catchblock = rva_to_ptr(tryblock[i].catchblock, image_base);
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2016-03-28 20:11:50 +02:00
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TRACE(" %d: start %d end %d catchlevel %d catch %x(%p) %d\n", i,
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2016-03-21 18:23:34 +01:00
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tryblock[i].start_level, tryblock[i].end_level,
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tryblock[i].catch_level, tryblock[i].catchblock,
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catchblock, tryblock[i].catchblock_count);
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for (j=0; j<tryblock[i].catchblock_count; j++)
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{
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2016-03-28 20:11:50 +02:00
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TRACE(" %d: flags %x offset %d handler %x(%p) frame %x type %x %s\n",
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j, catchblock[j].flags, catchblock[j].offset, catchblock[j].handler,
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rva_to_ptr(catchblock[j].handler, image_base), catchblock[j].frame,
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catchblock[j].type_info,
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dbgstr_type_info(rva_to_ptr(catchblock[j].type_info, image_base)));
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2016-03-21 18:23:34 +01:00
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}
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}
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2016-03-28 20:11:50 +02:00
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TRACE("ipmap: %x(%p) %d\n", descr->ipmap, ipmap, descr->ipmap_count);
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for (i=0; i<descr->ipmap_count; i++)
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{
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TRACE(" %d: ip %x state %d\n", i, ipmap[i].ip, ipmap[i].state);
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}
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2016-03-21 18:23:34 +01:00
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TRACE("unwind_help %d\n", descr->unwind_help);
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TRACE("expect list: %x\n", descr->expect_list);
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TRACE("flags: %08x\n", descr->flags);
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}
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static DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG64 frame,
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CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
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const cxx_function_descr *descr)
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{
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cxx_exception_type *exc_type;
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if (descr->magic != CXX_FRAME_MAGIC_VC8)
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{
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FIXME("unhandled frame magic %x\n", descr->magic);
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return ExceptionContinueSearch;
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}
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if (rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND))
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return ExceptionContinueSearch;
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if (!descr->tryblock_count) return ExceptionContinueSearch;
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if (rec->ExceptionCode == CXX_EXCEPTION &&
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rec->ExceptionInformation[1] == 0 && rec->ExceptionInformation[2] == 0)
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{
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*rec = *msvcrt_get_thread_data()->exc_record;
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rec->ExceptionFlags &= ~EH_UNWINDING;
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if (TRACE_ON(seh)) {
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TRACE("detect rethrow: exception code: %x\n", rec->ExceptionCode);
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if (rec->ExceptionCode == CXX_EXCEPTION)
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TRACE("re-propage: obj: %lx, type: %lx\n",
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rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
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}
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}
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if (rec->ExceptionCode == CXX_EXCEPTION)
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{
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exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
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if (TRACE_ON(seh))
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{
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TRACE("handling C++ exception rec %p frame %lx unwind_help %d descr %p\n",
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rec, frame, *((INT*)(frame+descr->unwind_help)), descr);
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dump_exception_type(exc_type, rec->ExceptionInformation[3]);
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dump_function_descr(descr, dispatch->ImageBase);
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}
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}
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else
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{
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2016-03-28 20:11:44 +02:00
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thread_data_t *data = msvcrt_get_thread_data();
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2016-03-21 18:23:34 +01:00
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exc_type = NULL;
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TRACE("handling C exception code %x rec %p frame %lx unwind_help %d descr %p\n",
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rec->ExceptionCode, rec, frame, *((INT*)(frame+descr->unwind_help)), descr);
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2016-03-28 20:11:44 +02:00
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if (data->se_translator) {
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EXCEPTION_POINTERS except_ptrs;
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except_ptrs.ExceptionRecord = rec;
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except_ptrs.ContextRecord = context;
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data->se_translator(rec->ExceptionCode, &except_ptrs);
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}
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2016-03-21 18:23:34 +01:00
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}
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return ExceptionContinueSearch;
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}
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2015-09-29 12:23:13 +02:00
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/*********************************************************************
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* __CxxExceptionFilter (MSVCRT.@)
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*/
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int CDECL __CxxExceptionFilter( PEXCEPTION_POINTERS ptrs,
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const type_info *ti, int flags, void **copy )
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{
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FIXME( "%p %p %x %p: not implemented\n", ptrs, ti, flags, copy );
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return EXCEPTION_CONTINUE_SEARCH;
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}
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2012-03-13 15:50:40 +01:00
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/*********************************************************************
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* __CxxFrameHandler (MSVCRT.@)
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*/
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EXCEPTION_DISPOSITION CDECL __CxxFrameHandler( EXCEPTION_RECORD *rec, ULONG64 frame,
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CONTEXT *context, DISPATCHER_CONTEXT *dispatch )
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{
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FIXME( "%p %lx %p %p: not implemented\n", rec, frame, context, dispatch );
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2016-03-21 18:23:34 +01:00
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return cxx_frame_handler( rec, frame, context, dispatch,
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rva_to_ptr(*(UINT*)dispatch->HandlerData, dispatch->ImageBase) );
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2012-03-13 15:50:40 +01:00
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}
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/*********************************************************************
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* __CppXcptFilter (MSVCRT.@)
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*/
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int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
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{
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/* only filter c++ exceptions */
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if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH;
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return _XcptFilter( ex, ptr );
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}
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/*********************************************************************
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* __CxxDetectRethrow (MSVCRT.@)
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*/
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BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs)
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{
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PEXCEPTION_RECORD rec;
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if (!ptrs)
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return FALSE;
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rec = ptrs->ExceptionRecord;
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if (rec->ExceptionCode == CXX_EXCEPTION &&
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2016-03-21 18:23:06 +01:00
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rec->NumberParameters == 4 &&
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2012-03-13 15:50:40 +01:00
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rec->ExceptionInformation[0] == CXX_FRAME_MAGIC_VC6 &&
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rec->ExceptionInformation[2])
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{
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ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record;
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return TRUE;
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}
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return (msvcrt_get_thread_data()->exc_record == rec);
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}
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/*********************************************************************
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* __CxxQueryExceptionSize (MSVCRT.@)
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*/
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unsigned int CDECL __CxxQueryExceptionSize(void)
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{
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return sizeof(cxx_exception_type);
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}
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2012-03-13 15:40:27 +01:00
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/*******************************************************************
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* _setjmp (MSVCRT.@)
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*/
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__ASM_GLOBAL_FUNC( MSVCRT__setjmp,
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"xorq %rdx,%rdx\n\t" /* frame */
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"jmp " __ASM_NAME("MSVCRT__setjmpex") );
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/*******************************************************************
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* _setjmpex (MSVCRT.@)
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*/
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__ASM_GLOBAL_FUNC( MSVCRT__setjmpex,
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"movq %rdx,(%rcx)\n\t" /* jmp_buf->Frame */
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"movq %rbx,0x8(%rcx)\n\t" /* jmp_buf->Rbx */
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"leaq 0x8(%rsp),%rax\n\t"
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"movq %rax,0x10(%rcx)\n\t" /* jmp_buf->Rsp */
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"movq %rbp,0x18(%rcx)\n\t" /* jmp_buf->Rbp */
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"movq %rsi,0x20(%rcx)\n\t" /* jmp_buf->Rsi */
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"movq %rdi,0x28(%rcx)\n\t" /* jmp_buf->Rdi */
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"movq %r12,0x30(%rcx)\n\t" /* jmp_buf->R12 */
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"movq %r13,0x38(%rcx)\n\t" /* jmp_buf->R13 */
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"movq %r14,0x40(%rcx)\n\t" /* jmp_buf->R14 */
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"movq %r15,0x48(%rcx)\n\t" /* jmp_buf->R15 */
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"movq (%rsp),%rax\n\t"
|
|
|
|
"movq %rax,0x50(%rcx)\n\t" /* jmp_buf->Rip */
|
|
|
|
"movdqa %xmm6,0x60(%rcx)\n\t" /* jmp_buf->Xmm6 */
|
|
|
|
"movdqa %xmm7,0x70(%rcx)\n\t" /* jmp_buf->Xmm7 */
|
|
|
|
"movdqa %xmm8,0x80(%rcx)\n\t" /* jmp_buf->Xmm8 */
|
|
|
|
"movdqa %xmm9,0x90(%rcx)\n\t" /* jmp_buf->Xmm9 */
|
|
|
|
"movdqa %xmm10,0xa0(%rcx)\n\t" /* jmp_buf->Xmm10 */
|
|
|
|
"movdqa %xmm11,0xb0(%rcx)\n\t" /* jmp_buf->Xmm11 */
|
|
|
|
"movdqa %xmm12,0xc0(%rcx)\n\t" /* jmp_buf->Xmm12 */
|
|
|
|
"movdqa %xmm13,0xd0(%rcx)\n\t" /* jmp_buf->Xmm13 */
|
|
|
|
"movdqa %xmm14,0xe0(%rcx)\n\t" /* jmp_buf->Xmm14 */
|
|
|
|
"movdqa %xmm15,0xf0(%rcx)\n\t" /* jmp_buf->Xmm15 */
|
|
|
|
"xorq %rax,%rax\n\t"
|
|
|
|
"retq" );
|
|
|
|
|
|
|
|
|
|
|
|
extern void DECLSPEC_NORETURN CDECL longjmp_set_regs( struct MSVCRT___JUMP_BUFFER *jmp, int retval );
|
|
|
|
__ASM_GLOBAL_FUNC( longjmp_set_regs,
|
|
|
|
"movq %rdx,%rax\n\t" /* retval */
|
|
|
|
"movq 0x8(%rcx),%rbx\n\t" /* jmp_buf->Rbx */
|
|
|
|
"movq 0x18(%rcx),%rbp\n\t" /* jmp_buf->Rbp */
|
|
|
|
"movq 0x20(%rcx),%rsi\n\t" /* jmp_buf->Rsi */
|
|
|
|
"movq 0x28(%rcx),%rdi\n\t" /* jmp_buf->Rdi */
|
|
|
|
"movq 0x30(%rcx),%r12\n\t" /* jmp_buf->R12 */
|
|
|
|
"movq 0x38(%rcx),%r13\n\t" /* jmp_buf->R13 */
|
|
|
|
"movq 0x40(%rcx),%r14\n\t" /* jmp_buf->R14 */
|
|
|
|
"movq 0x48(%rcx),%r15\n\t" /* jmp_buf->R15 */
|
|
|
|
"movdqa 0x60(%rcx),%xmm6\n\t" /* jmp_buf->Xmm6 */
|
|
|
|
"movdqa 0x70(%rcx),%xmm7\n\t" /* jmp_buf->Xmm7 */
|
|
|
|
"movdqa 0x80(%rcx),%xmm8\n\t" /* jmp_buf->Xmm8 */
|
|
|
|
"movdqa 0x90(%rcx),%xmm9\n\t" /* jmp_buf->Xmm9 */
|
|
|
|
"movdqa 0xa0(%rcx),%xmm10\n\t" /* jmp_buf->Xmm10 */
|
|
|
|
"movdqa 0xb0(%rcx),%xmm11\n\t" /* jmp_buf->Xmm11 */
|
|
|
|
"movdqa 0xc0(%rcx),%xmm12\n\t" /* jmp_buf->Xmm12 */
|
|
|
|
"movdqa 0xd0(%rcx),%xmm13\n\t" /* jmp_buf->Xmm13 */
|
|
|
|
"movdqa 0xe0(%rcx),%xmm14\n\t" /* jmp_buf->Xmm14 */
|
|
|
|
"movdqa 0xf0(%rcx),%xmm15\n\t" /* jmp_buf->Xmm15 */
|
|
|
|
"movq 0x50(%rcx),%rdx\n\t" /* jmp_buf->Rip */
|
|
|
|
"movq 0x10(%rcx),%rsp\n\t" /* jmp_buf->Rsp */
|
|
|
|
"jmp *%rdx" );
|
|
|
|
|
|
|
|
/*******************************************************************
|
|
|
|
* longjmp (MSVCRT.@)
|
|
|
|
*/
|
|
|
|
void __cdecl MSVCRT_longjmp( struct MSVCRT___JUMP_BUFFER *jmp, int retval )
|
|
|
|
{
|
|
|
|
EXCEPTION_RECORD rec;
|
|
|
|
|
|
|
|
if (!retval) retval = 1;
|
|
|
|
if (jmp->Frame)
|
|
|
|
{
|
|
|
|
rec.ExceptionCode = STATUS_LONGJUMP;
|
|
|
|
rec.ExceptionFlags = 0;
|
|
|
|
rec.ExceptionRecord = NULL;
|
|
|
|
rec.ExceptionAddress = NULL;
|
|
|
|
rec.NumberParameters = 1;
|
|
|
|
rec.ExceptionInformation[0] = (DWORD_PTR)jmp;
|
|
|
|
RtlUnwind( (void *)jmp->Frame, (void *)jmp->Rip, &rec, IntToPtr(retval) );
|
|
|
|
}
|
|
|
|
longjmp_set_regs( jmp, retval );
|
|
|
|
}
|
|
|
|
|
|
|
|
/*******************************************************************
|
|
|
|
* _local_unwind (MSVCRT.@)
|
|
|
|
*/
|
|
|
|
void __cdecl _local_unwind( void *frame, void *target )
|
|
|
|
{
|
|
|
|
RtlUnwind( frame, target, NULL, 0 );
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* __x86_64__ */
|