| /* |
| * msvcrt C++ exception handling |
| * |
| * Copyright 2011 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA |
| */ |
| |
| #include "config.h" |
| #include "wine/port.h" |
| |
| #ifdef __x86_64__ |
| |
| #include <stdarg.h> |
| |
| #include "ntstatus.h" |
| #define WIN32_NO_STATUS |
| #include "windef.h" |
| #include "winbase.h" |
| #include "winternl.h" |
| #include "msvcrt.h" |
| #include "wine/exception.h" |
| #include "excpt.h" |
| #include "wine/debug.h" |
| |
| #include "cppexcept.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(seh); |
| |
| struct _DISPATCHER_CONTEXT; |
| |
| typedef LONG (WINAPI *PC_LANGUAGE_EXCEPTION_HANDLER)( EXCEPTION_POINTERS *ptrs, ULONG64 frame ); |
| typedef EXCEPTION_DISPOSITION (WINAPI *PEXCEPTION_ROUTINE)( EXCEPTION_RECORD *rec, |
| ULONG64 frame, |
| CONTEXT *context, |
| struct _DISPATCHER_CONTEXT *dispatch ); |
| |
| typedef struct _DISPATCHER_CONTEXT |
| { |
| ULONG64 ControlPc; |
| ULONG64 ImageBase; |
| PRUNTIME_FUNCTION FunctionEntry; |
| ULONG64 EstablisherFrame; |
| ULONG64 TargetIp; |
| PCONTEXT ContextRecord; |
| PEXCEPTION_ROUTINE LanguageHandler; |
| PVOID HandlerData; |
| PUNWIND_HISTORY_TABLE HistoryTable; |
| ULONG ScopeIndex; |
| } DISPATCHER_CONTEXT; |
| |
| typedef struct |
| { |
| int prev; |
| UINT handler; |
| } unwind_info; |
| |
| typedef struct |
| { |
| UINT flags; |
| UINT type_info; |
| int offset; |
| UINT handler; |
| UINT frame; |
| } catchblock_info; |
| #define TYPE_FLAG_CONST 1 |
| #define TYPE_FLAG_VOLATILE 2 |
| #define TYPE_FLAG_REFERENCE 8 |
| |
| typedef struct |
| { |
| int start_level; |
| int end_level; |
| int catch_level; |
| int catchblock_count; |
| UINT catchblock; |
| } tryblock_info; |
| |
| typedef struct |
| { |
| int ip; |
| int state; |
| } ipmap_info; |
| |
| typedef struct __cxx_function_descr |
| { |
| UINT magic; |
| UINT unwind_count; |
| UINT unwind_table; |
| UINT tryblock_count; |
| UINT tryblock; |
| UINT ipmap_count; |
| UINT ipmap; |
| UINT unwind_help; |
| UINT expect_list; |
| UINT flags; |
| } cxx_function_descr; |
| |
| typedef struct |
| { |
| cxx_frame_info frame_info; |
| BOOL rethrow; |
| } cxx_catch_ctx; |
| |
| typedef struct |
| { |
| ULONG64 dest_frame; |
| ULONG64 orig_frame; |
| EXCEPTION_RECORD *seh_rec; |
| DISPATCHER_CONTEXT *dispatch; |
| const cxx_function_descr *descr; |
| } se_translator_ctx; |
| |
| static inline void* rva_to_ptr(UINT rva, ULONG64 base) |
| { |
| return rva ? (void*)(base+rva) : NULL; |
| } |
| |
| static inline void dump_type(UINT type_rva, ULONG64 base) |
| { |
| const cxx_type_info *type = rva_to_ptr(type_rva, base); |
| |
| TRACE("flags %x type %x %s offsets %d,%d,%d size %d copy ctor %x(%p)\n", |
| type->flags, type->type_info, dbgstr_type_info(rva_to_ptr(type->type_info, base)), |
| type->offsets.this_offset, type->offsets.vbase_descr, type->offsets.vbase_offset, |
| type->size, type->copy_ctor, rva_to_ptr(type->copy_ctor, base)); |
| } |
| |
| static void dump_exception_type(const cxx_exception_type *type, ULONG64 base) |
| { |
| const cxx_type_info_table *type_info_table = rva_to_ptr(type->type_info_table, base); |
| UINT i; |
| |
| TRACE("flags %x destr %x(%p) handler %x(%p) type info %x(%p)\n", |
| type->flags, type->destructor, rva_to_ptr(type->destructor, base), |
| type->custom_handler, rva_to_ptr(type->custom_handler, base), |
| type->type_info_table, type_info_table); |
| for (i = 0; i < type_info_table->count; i++) |
| { |
| TRACE(" %d: ", i); |
| dump_type(type_info_table->info[i], base); |
| } |
| } |
| |
| static void dump_function_descr(const cxx_function_descr *descr, ULONG64 image_base) |
| { |
| unwind_info *unwind_table = rva_to_ptr(descr->unwind_table, image_base); |
| tryblock_info *tryblock = rva_to_ptr(descr->tryblock, image_base); |
| ipmap_info *ipmap = rva_to_ptr(descr->ipmap, image_base); |
| UINT i, j; |
| |
| TRACE("magic %x\n", descr->magic); |
| TRACE("unwind table: %x(%p) %d\n", descr->unwind_table, unwind_table, descr->unwind_count); |
| for (i=0; i<descr->unwind_count; i++) |
| { |
| TRACE(" %d: prev %d func %x(%p)\n", i, unwind_table[i].prev, |
| unwind_table[i].handler, rva_to_ptr(unwind_table[i].handler, image_base)); |
| } |
| TRACE("try table: %x(%p) %d\n", descr->tryblock, tryblock, descr->tryblock_count); |
| for (i=0; i<descr->tryblock_count; i++) |
| { |
| catchblock_info *catchblock = rva_to_ptr(tryblock[i].catchblock, image_base); |
| |
| TRACE(" %d: start %d end %d catchlevel %d catch %x(%p) %d\n", i, |
| tryblock[i].start_level, tryblock[i].end_level, |
| tryblock[i].catch_level, tryblock[i].catchblock, |
| catchblock, tryblock[i].catchblock_count); |
| for (j=0; j<tryblock[i].catchblock_count; j++) |
| { |
| TRACE(" %d: flags %x offset %d handler %x(%p) frame %x type %x %s\n", |
| j, catchblock[j].flags, catchblock[j].offset, catchblock[j].handler, |
| rva_to_ptr(catchblock[j].handler, image_base), catchblock[j].frame, |
| catchblock[j].type_info, |
| dbgstr_type_info(rva_to_ptr(catchblock[j].type_info, image_base))); |
| } |
| } |
| TRACE("ipmap: %x(%p) %d\n", descr->ipmap, ipmap, descr->ipmap_count); |
| for (i=0; i<descr->ipmap_count; i++) |
| { |
| TRACE(" %d: ip %x state %d\n", i, ipmap[i].ip, ipmap[i].state); |
| } |
| TRACE("unwind_help %d\n", descr->unwind_help); |
| if (descr->magic <= CXX_FRAME_MAGIC_VC6) return; |
| TRACE("expect list: %x\n", descr->expect_list); |
| if (descr->magic <= CXX_FRAME_MAGIC_VC7) return; |
| TRACE("flags: %08x\n", descr->flags); |
| } |
| |
| static inline int ip_to_state(ipmap_info *ipmap, UINT count, int ip) |
| { |
| UINT low = 0, high = count-1, med; |
| |
| while (low < high) { |
| med = low + (high-low)/2; |
| |
| if (ipmap[med].ip <= ip && ipmap[med+1].ip > ip) |
| { |
| low = med; |
| break; |
| } |
| if (ipmap[med].ip < ip) low = med+1; |
| else high = med-1; |
| } |
| |
| TRACE("%x -> %d\n", ip, ipmap[low].state); |
| return ipmap[low].state; |
| } |
| |
| /* check if the exception type is caught by a given catch block, and return the type that matched */ |
| static const cxx_type_info *find_caught_type(cxx_exception_type *exc_type, ULONG64 exc_base, |
| const type_info *catch_ti, UINT catch_flags) |
| { |
| const cxx_type_info_table *type_info_table = rva_to_ptr(exc_type->type_info_table, exc_base); |
| UINT i; |
| |
| for (i = 0; i < type_info_table->count; i++) |
| { |
| const cxx_type_info *type = rva_to_ptr(type_info_table->info[i], exc_base); |
| const type_info *ti = rva_to_ptr(type->type_info, exc_base); |
| |
| if (!catch_ti) return type; /* catch(...) matches any type */ |
| if (catch_ti != ti) |
| { |
| if (strcmp( catch_ti->mangled, ti->mangled )) continue; |
| } |
| /* type is the same, now check the flags */ |
| if ((exc_type->flags & TYPE_FLAG_CONST) && |
| !(catch_flags & TYPE_FLAG_CONST)) continue; |
| if ((exc_type->flags & TYPE_FLAG_VOLATILE) && |
| !(catch_flags & TYPE_FLAG_VOLATILE)) continue; |
| return type; /* it matched */ |
| } |
| return NULL; |
| } |
| |
| static inline void copy_exception(void *object, ULONG64 frame, |
| DISPATCHER_CONTEXT *dispatch, |
| const catchblock_info *catchblock, |
| const cxx_type_info *type, ULONG64 exc_base) |
| { |
| const type_info *catch_ti = rva_to_ptr(catchblock->type_info, dispatch->ImageBase); |
| void **dest = rva_to_ptr(catchblock->offset, frame); |
| |
| if (!catch_ti || !catch_ti->mangled[0]) return; |
| if (!catchblock->offset) return; |
| |
| if (catchblock->flags & TYPE_FLAG_REFERENCE) |
| { |
| *dest = get_this_pointer(&type->offsets, object); |
| } |
| else if (type->flags & CLASS_IS_SIMPLE_TYPE) |
| { |
| memmove(dest, object, type->size); |
| /* if it is a pointer, adjust it */ |
| if (type->size == sizeof(void*)) *dest = get_this_pointer(&type->offsets, *dest); |
| } |
| else /* copy the object */ |
| { |
| if (type->copy_ctor) |
| { |
| if (type->flags & CLASS_HAS_VIRTUAL_BASE_CLASS) |
| { |
| void (__cdecl *copy_ctor)(void*, void*, int) = |
| rva_to_ptr(type->copy_ctor, exc_base); |
| copy_ctor(dest, get_this_pointer(&type->offsets, object), 1); |
| } |
| else |
| { |
| void (__cdecl *copy_ctor)(void*, void*) = |
| rva_to_ptr(type->copy_ctor, exc_base); |
| copy_ctor(dest, get_this_pointer(&type->offsets, object)); |
| } |
| } |
| else |
| memmove(dest, get_this_pointer(&type->offsets,object), type->size); |
| } |
| } |
| |
| static void cxx_local_unwind(ULONG64 frame, DISPATCHER_CONTEXT *dispatch, |
| const cxx_function_descr *descr, int last_level) |
| { |
| const unwind_info *unwind_table = rva_to_ptr(descr->unwind_table, dispatch->ImageBase); |
| void (__cdecl *handler)(ULONG64 unk, ULONG64 rbp); |
| int *unwind_help = rva_to_ptr(descr->unwind_help, frame); |
| int trylevel; |
| |
| if (unwind_help[0] == -2) |
| { |
| trylevel = ip_to_state(rva_to_ptr(descr->ipmap, dispatch->ImageBase), |
| descr->ipmap_count, dispatch->ControlPc-dispatch->ImageBase); |
| } |
| else |
| { |
| trylevel = unwind_help[0]; |
| } |
| |
| TRACE("current level: %d, last level: %d\n", trylevel, last_level); |
| while (trylevel > last_level) |
| { |
| if (trylevel<0 || trylevel>=descr->unwind_count) |
| { |
| ERR("invalid trylevel %d\n", trylevel); |
| MSVCRT_terminate(); |
| } |
| handler = rva_to_ptr(unwind_table[trylevel].handler, dispatch->ImageBase); |
| if (handler) |
| { |
| TRACE("handler: %p\n", handler); |
| handler(0, frame); |
| } |
| trylevel = unwind_table[trylevel].prev; |
| } |
| unwind_help[0] = trylevel; |
| } |
| |
| static LONG CALLBACK cxx_rethrow_filter(PEXCEPTION_POINTERS eptrs, void *c) |
| { |
| EXCEPTION_RECORD *rec = eptrs->ExceptionRecord; |
| thread_data_t *data = msvcrt_get_thread_data(); |
| cxx_catch_ctx *ctx = c; |
| |
| if (rec->ExceptionCode != CXX_EXCEPTION) |
| return EXCEPTION_CONTINUE_SEARCH; |
| if (!rec->ExceptionInformation[1] && !rec->ExceptionInformation[2]) |
| return EXCEPTION_EXECUTE_HANDLER; |
| if (rec->ExceptionInformation[1] == data->exc_record->ExceptionInformation[1]) |
| ctx->rethrow = TRUE; |
| return EXCEPTION_CONTINUE_SEARCH; |
| } |
| |
| static void CALLBACK cxx_catch_cleanup(BOOL normal, void *c) |
| { |
| cxx_catch_ctx *ctx = c; |
| __CxxUnregisterExceptionObject(&ctx->frame_info, ctx->rethrow); |
| } |
| |
| static void* WINAPI call_catch_block(EXCEPTION_RECORD *rec) |
| { |
| ULONG64 frame = rec->ExceptionInformation[1]; |
| const cxx_function_descr *descr = (void*)rec->ExceptionInformation[2]; |
| EXCEPTION_RECORD *prev_rec = (void*)rec->ExceptionInformation[4]; |
| EXCEPTION_RECORD *untrans_rec = (void*)rec->ExceptionInformation[6]; |
| void* (__cdecl *handler)(ULONG64 unk, ULONG64 rbp) = (void*)rec->ExceptionInformation[5]; |
| int *unwind_help = rva_to_ptr(descr->unwind_help, frame); |
| cxx_catch_ctx ctx; |
| void *ret_addr = NULL; |
| |
| TRACE("calling handler %p\n", handler); |
| |
| ctx.rethrow = FALSE; |
| __CxxRegisterExceptionObject(&prev_rec, &ctx.frame_info); |
| __TRY |
| { |
| __TRY |
| { |
| ret_addr = handler(0, frame); |
| } |
| __EXCEPT_CTX(cxx_rethrow_filter, &ctx) |
| { |
| TRACE("detect rethrow: exception code: %x\n", prev_rec->ExceptionCode); |
| ctx.rethrow = TRUE; |
| |
| if (untrans_rec) |
| { |
| __DestructExceptionObject(prev_rec); |
| RaiseException(untrans_rec->ExceptionCode, untrans_rec->ExceptionFlags, |
| untrans_rec->NumberParameters, untrans_rec->ExceptionInformation); |
| } |
| else |
| { |
| RaiseException(prev_rec->ExceptionCode, prev_rec->ExceptionFlags, |
| prev_rec->NumberParameters, prev_rec->ExceptionInformation); |
| } |
| } |
| __ENDTRY |
| } |
| __FINALLY_CTX(cxx_catch_cleanup, &ctx) |
| |
| unwind_help[0] = -2; |
| unwind_help[1] = -1; |
| return ret_addr; |
| } |
| |
| static inline BOOL cxx_is_consolidate(const EXCEPTION_RECORD *rec) |
| { |
| return rec->ExceptionCode==STATUS_UNWIND_CONSOLIDATE && rec->NumberParameters==7 && |
| rec->ExceptionInformation[0]==(ULONG_PTR)call_catch_block; |
| } |
| |
| static inline void find_catch_block(EXCEPTION_RECORD *rec, EXCEPTION_RECORD *untrans_rec, |
| ULONG64 frame, DISPATCHER_CONTEXT *dispatch, |
| const cxx_function_descr *descr, |
| cxx_exception_type *info, ULONG64 orig_frame) |
| { |
| ULONG64 exc_base = (rec->NumberParameters == 4 ? rec->ExceptionInformation[3] : 0); |
| int trylevel = ip_to_state(rva_to_ptr(descr->ipmap, dispatch->ImageBase), |
| descr->ipmap_count, dispatch->ControlPc-dispatch->ImageBase); |
| const tryblock_info *in_catch; |
| EXCEPTION_RECORD catch_record; |
| CONTEXT context; |
| UINT i, j; |
| INT *unwind_help; |
| |
| for (i=descr->tryblock_count; i>0; i--) |
| { |
| in_catch = rva_to_ptr(descr->tryblock, dispatch->ImageBase); |
| in_catch = &in_catch[i-1]; |
| |
| if (trylevel>in_catch->end_level && trylevel<=in_catch->catch_level) |
| break; |
| } |
| if (!i) |
| in_catch = NULL; |
| |
| unwind_help = rva_to_ptr(descr->unwind_help, orig_frame); |
| if (trylevel > unwind_help[1]) |
| unwind_help[0] = unwind_help[1] = trylevel; |
| else |
| trylevel = unwind_help[1]; |
| TRACE("current trylevel: %d\n", trylevel); |
| |
| for (i=0; i<descr->tryblock_count; i++) |
| { |
| const tryblock_info *tryblock = rva_to_ptr(descr->tryblock, dispatch->ImageBase); |
| tryblock = &tryblock[i]; |
| |
| if (trylevel < tryblock->start_level) continue; |
| if (trylevel > tryblock->end_level) continue; |
| |
| if (in_catch) |
| { |
| if(tryblock->start_level <= in_catch->end_level) continue; |
| if(tryblock->end_level > in_catch->catch_level) continue; |
| } |
| |
| /* got a try block */ |
| for (j=0; j<tryblock->catchblock_count; j++) |
| { |
| const catchblock_info *catchblock = rva_to_ptr(tryblock->catchblock, dispatch->ImageBase); |
| catchblock = &catchblock[j]; |
| |
| if (info) |
| { |
| const cxx_type_info *type = find_caught_type(info, exc_base, |
| rva_to_ptr(catchblock->type_info, dispatch->ImageBase), |
| catchblock->flags); |
| if (!type) continue; |
| |
| TRACE("matched type %p in tryblock %d catchblock %d\n", type, i, j); |
| |
| /* copy the exception to its destination on the stack */ |
| copy_exception((void*)rec->ExceptionInformation[1], |
| orig_frame, dispatch, catchblock, type, exc_base); |
| } |
| else |
| { |
| /* no CXX_EXCEPTION only proceed with a catch(...) block*/ |
| if (catchblock->type_info) |
| continue; |
| TRACE("found catch(...) block\n"); |
| } |
| |
| /* unwind stack and call catch */ |
| memset(&catch_record, 0, sizeof(catch_record)); |
| catch_record.ExceptionCode = STATUS_UNWIND_CONSOLIDATE; |
| catch_record.ExceptionFlags = EXCEPTION_NONCONTINUABLE; |
| catch_record.NumberParameters = 7; |
| catch_record.ExceptionInformation[0] = (ULONG_PTR)call_catch_block; |
| catch_record.ExceptionInformation[1] = orig_frame; |
| catch_record.ExceptionInformation[2] = (ULONG_PTR)descr; |
| catch_record.ExceptionInformation[3] = tryblock->start_level; |
| catch_record.ExceptionInformation[4] = (ULONG_PTR)rec; |
| catch_record.ExceptionInformation[5] = |
| (ULONG_PTR)rva_to_ptr(catchblock->handler, dispatch->ImageBase); |
| catch_record.ExceptionInformation[6] = (ULONG_PTR)untrans_rec; |
| RtlUnwindEx((void*)frame, (void*)dispatch->ControlPc, &catch_record, NULL, &context, NULL); |
| } |
| } |
| |
| TRACE("no matching catch block found\n"); |
| } |
| |
| static LONG CALLBACK se_translation_filter(EXCEPTION_POINTERS *ep, void *c) |
| { |
| se_translator_ctx *ctx = (se_translator_ctx *)c; |
| EXCEPTION_RECORD *rec = ep->ExceptionRecord; |
| cxx_exception_type *exc_type; |
| |
| if (rec->ExceptionCode != CXX_EXCEPTION) |
| { |
| TRACE("non-c++ exception thrown in SEH handler: %x\n", rec->ExceptionCode); |
| MSVCRT_terminate(); |
| } |
| |
| exc_type = (cxx_exception_type *)rec->ExceptionInformation[2]; |
| find_catch_block(rec, ctx->seh_rec, ctx->dest_frame, ctx->dispatch, |
| ctx->descr, exc_type, ctx->orig_frame); |
| |
| __DestructExceptionObject(rec); |
| return ExceptionContinueSearch; |
| } |
| |
| static DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG64 frame, |
| CONTEXT *context, DISPATCHER_CONTEXT *dispatch, |
| const cxx_function_descr *descr) |
| { |
| int trylevel = ip_to_state(rva_to_ptr(descr->ipmap, dispatch->ImageBase), |
| descr->ipmap_count, dispatch->ControlPc-dispatch->ImageBase); |
| cxx_exception_type *exc_type; |
| ULONG64 orig_frame = frame; |
| ULONG64 throw_base; |
| DWORD throw_func_off; |
| void *throw_func; |
| UINT i, j; |
| int unwindlevel = -1; |
| |
| if (descr->magic<CXX_FRAME_MAGIC_VC6 || descr->magic>CXX_FRAME_MAGIC_VC8) |
| { |
| FIXME("unhandled frame magic %x\n", descr->magic); |
| return ExceptionContinueSearch; |
| } |
| |
| if (descr->magic >= CXX_FRAME_MAGIC_VC8 && |
| (descr->flags & FUNC_DESCR_SYNCHRONOUS) && |
| (rec->ExceptionCode != CXX_EXCEPTION && |
| !cxx_is_consolidate(rec) && |
| rec->ExceptionCode != STATUS_LONGJUMP)) |
| return ExceptionContinueSearch; /* handle only c++ exceptions */ |
| |
| /* update orig_frame if it's a nested exception */ |
| throw_func_off = RtlLookupFunctionEntry(dispatch->ControlPc, &throw_base, NULL)->BeginAddress; |
| throw_func = rva_to_ptr(throw_func_off, throw_base); |
| TRACE("reconstructed handler pointer: %p\n", throw_func); |
| for (i=descr->tryblock_count; i>0; i--) |
| { |
| const tryblock_info *tryblock = rva_to_ptr(descr->tryblock, dispatch->ImageBase); |
| tryblock = &tryblock[i-1]; |
| |
| if (trylevel>tryblock->end_level && trylevel<=tryblock->catch_level) |
| { |
| for (j=0; j<tryblock->catchblock_count; j++) |
| { |
| const catchblock_info *catchblock = rva_to_ptr(tryblock->catchblock, dispatch->ImageBase); |
| catchblock = &catchblock[j]; |
| |
| if (rva_to_ptr(catchblock->handler, dispatch->ImageBase) == throw_func) |
| { |
| TRACE("nested exception detected\n"); |
| unwindlevel = tryblock->end_level; |
| orig_frame = *(ULONG64*)rva_to_ptr(catchblock->frame, frame); |
| TRACE("setting orig_frame to %lx\n", orig_frame); |
| } |
| } |
| } |
| } |
| |
| if (rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND)) |
| { |
| if (rec->ExceptionFlags & EH_TARGET_UNWIND) |
| cxx_local_unwind(orig_frame, dispatch, descr, |
| cxx_is_consolidate(rec) ? rec->ExceptionInformation[3] : trylevel); |
| else |
| cxx_local_unwind(orig_frame, dispatch, descr, unwindlevel); |
| return ExceptionContinueSearch; |
| } |
| if (!descr->tryblock_count) return ExceptionContinueSearch; |
| |
| if (rec->ExceptionCode == CXX_EXCEPTION) |
| { |
| exc_type = (cxx_exception_type *)rec->ExceptionInformation[2]; |
| |
| if (TRACE_ON(seh)) |
| { |
| TRACE("handling C++ exception rec %p frame %lx descr %p\n", rec, frame, descr); |
| dump_exception_type(exc_type, rec->ExceptionInformation[3]); |
| dump_function_descr(descr, dispatch->ImageBase); |
| } |
| } |
| else |
| { |
| thread_data_t *data = msvcrt_get_thread_data(); |
| |
| exc_type = NULL; |
| TRACE("handling C exception code %x rec %p frame %lx descr %p\n", |
| rec->ExceptionCode, rec, frame, descr); |
| |
| if (data->se_translator) { |
| EXCEPTION_POINTERS except_ptrs; |
| se_translator_ctx ctx; |
| |
| ctx.dest_frame = frame; |
| ctx.orig_frame = orig_frame; |
| ctx.seh_rec = rec; |
| ctx.dispatch = dispatch; |
| ctx.descr = descr; |
| __TRY |
| { |
| except_ptrs.ExceptionRecord = rec; |
| except_ptrs.ContextRecord = context; |
| data->se_translator(rec->ExceptionCode, &except_ptrs); |
| } |
| __EXCEPT_CTX(se_translation_filter, &ctx) |
| { |
| } |
| __ENDTRY |
| } |
| } |
| |
| find_catch_block(rec, NULL, frame, dispatch, descr, exc_type, orig_frame); |
| return ExceptionContinueSearch; |
| } |
| |
| /********************************************************************* |
| * __CxxExceptionFilter (MSVCRT.@) |
| */ |
| int CDECL __CxxExceptionFilter( PEXCEPTION_POINTERS ptrs, |
| const type_info *ti, int flags, void **copy ) |
| { |
| FIXME( "%p %p %x %p: not implemented\n", ptrs, ti, flags, copy ); |
| return EXCEPTION_CONTINUE_SEARCH; |
| } |
| |
| /********************************************************************* |
| * __CxxFrameHandler (MSVCRT.@) |
| */ |
| EXCEPTION_DISPOSITION CDECL __CxxFrameHandler( EXCEPTION_RECORD *rec, ULONG64 frame, |
| CONTEXT *context, DISPATCHER_CONTEXT *dispatch ) |
| { |
| TRACE( "%p %lx %p %p\n", rec, frame, context, dispatch ); |
| return cxx_frame_handler( rec, frame, context, dispatch, |
| rva_to_ptr(*(UINT*)dispatch->HandlerData, dispatch->ImageBase) ); |
| } |
| |
| |
| /********************************************************************* |
| * __CppXcptFilter (MSVCRT.@) |
| */ |
| int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr) |
| { |
| /* only filter c++ exceptions */ |
| if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH; |
| return _XcptFilter( ex, ptr ); |
| } |
| |
| |
| /********************************************************************* |
| * __CxxDetectRethrow (MSVCRT.@) |
| */ |
| BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs) |
| { |
| PEXCEPTION_RECORD rec; |
| |
| if (!ptrs) |
| return FALSE; |
| |
| rec = ptrs->ExceptionRecord; |
| |
| if (rec->ExceptionCode == CXX_EXCEPTION && |
| rec->NumberParameters == 4 && |
| rec->ExceptionInformation[0] == CXX_FRAME_MAGIC_VC6 && |
| rec->ExceptionInformation[2]) |
| { |
| ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record; |
| return TRUE; |
| } |
| return (msvcrt_get_thread_data()->exc_record == rec); |
| } |
| |
| |
| /********************************************************************* |
| * __CxxQueryExceptionSize (MSVCRT.@) |
| */ |
| unsigned int CDECL __CxxQueryExceptionSize(void) |
| { |
| return sizeof(cxx_exception_type); |
| } |
| |
| |
| /******************************************************************* |
| * _setjmp (MSVCRT.@) |
| */ |
| __ASM_GLOBAL_FUNC( MSVCRT__setjmp, |
| "jmp " __ASM_NAME("MSVCRT__setjmpex") ); |
| |
| /******************************************************************* |
| * _setjmpex (MSVCRT.@) |
| */ |
| __ASM_GLOBAL_FUNC( MSVCRT__setjmpex, |
| "movq %rdx,(%rcx)\n\t" /* jmp_buf->Frame */ |
| "movq %rbx,0x8(%rcx)\n\t" /* jmp_buf->Rbx */ |
| "leaq 0x8(%rsp),%rax\n\t" |
| "movq %rax,0x10(%rcx)\n\t" /* jmp_buf->Rsp */ |
| "movq %rbp,0x18(%rcx)\n\t" /* jmp_buf->Rbp */ |
| "movq %rsi,0x20(%rcx)\n\t" /* jmp_buf->Rsi */ |
| "movq %rdi,0x28(%rcx)\n\t" /* jmp_buf->Rdi */ |
| "movq %r12,0x30(%rcx)\n\t" /* jmp_buf->R12 */ |
| "movq %r13,0x38(%rcx)\n\t" /* jmp_buf->R13 */ |
| "movq %r14,0x40(%rcx)\n\t" /* jmp_buf->R14 */ |
| "movq %r15,0x48(%rcx)\n\t" /* jmp_buf->R15 */ |
| "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 ); |
| } |
| |
| /********************************************************************* |
| * _fpieee_flt (MSVCRT.@) |
| */ |
| int __cdecl _fpieee_flt(ULONG exception_code, EXCEPTION_POINTERS *ep, |
| int (__cdecl *handler)(_FPIEEE_RECORD*)) |
| { |
| FIXME("(%x %p %p) opcode: %s\n", exception_code, ep, handler, |
| wine_dbgstr_longlong(*(ULONG64*)ep->ContextRecord->Rip)); |
| return EXCEPTION_CONTINUE_SEARCH; |
| } |
| |
| #endif /* __x86_64__ */ |
