| /* |
| * 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; |
| } catchblock_info; |
| |
| typedef struct |
| { |
| int start_level; |
| int end_level; |
| int catch_level; |
| int catchblock_count; |
| UINT catchblock; |
| } tryblock_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; |
| |
| 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); |
| 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) type %x %s\n", |
| j, catchblock->flags, catchblock->offset, catchblock->handler, |
| rva_to_ptr(catchblock->handler, image_base), catchblock->type_info, |
| dbgstr_type_info(rva_to_ptr(catchblock->type_info, image_base))); |
| } |
| } |
| 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 DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG64 frame, |
| CONTEXT *context, DISPATCHER_CONTEXT *dispatch, |
| const cxx_function_descr *descr) |
| { |
| cxx_exception_type *exc_type; |
| |
| if (descr->magic<CXX_FRAME_MAGIC_VC6 || descr->magic>CXX_FRAME_MAGIC_VC8) |
| { |
| FIXME("unhandled frame magic %x\n", descr->magic); |
| return ExceptionContinueSearch; |
| } |
| |
| if (rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND)) |
| return ExceptionContinueSearch; |
| if (!descr->tryblock_count) return ExceptionContinueSearch; |
| |
| if (rec->ExceptionCode == CXX_EXCEPTION && |
| rec->ExceptionInformation[1] == 0 && rec->ExceptionInformation[2] == 0) |
| { |
| *rec = *msvcrt_get_thread_data()->exc_record; |
| rec->ExceptionFlags &= ~EH_UNWINDING; |
| if (TRACE_ON(seh)) { |
| TRACE("detect rethrow: exception code: %x\n", rec->ExceptionCode); |
| if (rec->ExceptionCode == CXX_EXCEPTION) |
| TRACE("re-propage: obj: %lx, type: %lx\n", |
| rec->ExceptionInformation[1], rec->ExceptionInformation[2]); |
| } |
| } |
| |
| 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 unwind_help %d descr %p\n", |
| rec, frame, *((INT*)(frame+descr->unwind_help)), descr); |
| dump_exception_type(exc_type, rec->ExceptionInformation[3]); |
| dump_function_descr(descr, dispatch->ImageBase); |
| } |
| } |
| else |
| { |
| exc_type = NULL; |
| TRACE("handling C exception code %x rec %p frame %lx unwind_help %d descr %p\n", |
| rec->ExceptionCode, rec, frame, *((INT*)(frame+descr->unwind_help)), descr); |
| } |
| |
| 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 ) |
| { |
| FIXME( "%p %lx %p %p: not implemented\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 == 3 && |
| 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, |
| "xorq %rdx,%rdx\n\t" /* frame */ |
| "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 ); |
| } |
| |
| #endif /* __x86_64__ */ |
