2 * msvcrt C++ exception handling
4 * Copyright 2000 Jon Griffiths
5 * Copyright 2002 Alexandre Julliard
6 * Copyright 2005 Juan Lang
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 * A good reference is the article "How a C++ compiler implements
24 * exception handling" by Vishal Kochhar, available on
25 * www.thecodeproject.com.
37 #include "wine/exception.h"
39 #include "wine/debug.h"
41 #include "cppexcept.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(seh
);
46 /* the exception frame used by CxxFrameHandler */
47 typedef struct __cxx_exception_frame
49 EXCEPTION_REGISTRATION_RECORD frame
; /* the standard exception frame */
52 } cxx_exception_frame
;
54 /* info about a single catch {} block */
55 typedef struct __catchblock_info
57 UINT flags
; /* flags (see below) */
58 const type_info
*type_info
; /* C++ type caught by this block */
59 int offset
; /* stack offset to copy exception object to */
60 void * (*handler
)(void);/* catch block handler code */
62 #define TYPE_FLAG_CONST 1
63 #define TYPE_FLAG_VOLATILE 2
64 #define TYPE_FLAG_REFERENCE 8
66 /* info about a single try {} block */
67 typedef struct __tryblock_info
69 int start_level
; /* start trylevel of that block */
70 int end_level
; /* end trylevel of that block */
71 int catch_level
; /* initial trylevel of the catch block */
72 int catchblock_count
; /* count of catch blocks in array */
73 const catchblock_info
*catchblock
; /* array of catch blocks */
76 /* info about the unwind handler for a given trylevel */
77 typedef struct __unwind_info
79 int prev
; /* prev trylevel unwind handler, to run after this one */
80 void * (*handler
)(void);/* unwind handler */
83 /* descriptor of all try blocks of a given function */
84 typedef struct __cxx_function_descr
86 UINT magic
; /* must be CXX_FRAME_MAGIC */
87 UINT unwind_count
; /* number of unwind handlers */
88 const unwind_info
*unwind_table
; /* array of unwind handlers */
89 UINT tryblock_count
; /* number of try blocks */
90 const tryblock_info
*tryblock
; /* array of try blocks */
93 const void *expect_list
; /* expected exceptions list when magic >= VC7 */
94 UINT flags
; /* flags when magic >= VC8 */
97 /* exception frame for nested exceptions in catch block */
100 EXCEPTION_REGISTRATION_RECORD frame
; /* standard exception frame */
101 cxx_exception_frame
*cxx_frame
; /* frame of parent exception */
102 const cxx_function_descr
*descr
; /* descriptor of parent exception */
103 int trylevel
; /* current try level */
104 cxx_frame_info frame_info
;
105 } catch_func_nested_frame
;
109 cxx_exception_frame
*frame
;
110 const cxx_function_descr
*descr
;
111 catch_func_nested_frame
*nested_frame
;
114 typedef struct _SCOPETABLE
116 int previousTryLevel
;
117 int (*lpfnFilter
)(PEXCEPTION_POINTERS
);
118 void * (*lpfnHandler
)(void);
119 } SCOPETABLE
, *PSCOPETABLE
;
121 typedef struct MSVCRT_EXCEPTION_FRAME
123 EXCEPTION_REGISTRATION_RECORD
*prev
;
124 void (*handler
)(PEXCEPTION_RECORD
, EXCEPTION_REGISTRATION_RECORD
*,
125 PCONTEXT
, PEXCEPTION_RECORD
);
126 PSCOPETABLE scopetable
;
129 PEXCEPTION_POINTERS xpointers
;
130 } MSVCRT_EXCEPTION_FRAME
;
134 int gs_cookie_offset
;
136 int eh_cookie_offset
;
138 SCOPETABLE entries
[1];
141 #define TRYLEVEL_END (-1) /* End of trylevel list */
143 DWORD CDECL
cxx_frame_handler( PEXCEPTION_RECORD rec
, cxx_exception_frame
* frame
,
144 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
,
145 const cxx_function_descr
*descr
,
146 catch_func_nested_frame
* nested_frame
) DECLSPEC_HIDDEN
;
148 /* call a copy constructor */
149 extern void call_copy_ctor( void *func
, void *this, void *src
, int has_vbase
);
151 __ASM_GLOBAL_FUNC( call_copy_ctor
,
153 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
154 __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
155 "movl %esp, %ebp\n\t"
156 __ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
158 "movl 12(%ebp), %ecx\n\t"
162 __ASM_CFI(".cfi_def_cfa %esp,4\n\t")
163 __ASM_CFI(".cfi_same_value %ebp\n\t")
166 /* continue execution to the specified address after exception is caught */
167 extern void DECLSPEC_NORETURN
continue_after_catch( cxx_exception_frame
* frame
, void *addr
);
169 __ASM_GLOBAL_FUNC( continue_after_catch
,
170 "movl 4(%esp), %edx\n\t"
171 "movl 8(%esp), %eax\n\t"
172 "movl -4(%edx), %esp\n\t"
173 "leal 12(%edx), %ebp\n\t"
176 extern void DECLSPEC_NORETURN
call_finally_block( void *code_block
, void *base_ptr
);
178 __ASM_GLOBAL_FUNC( call_finally_block
,
179 "movl 8(%esp), %ebp\n\t"
182 extern int call_filter( int (*func
)(PEXCEPTION_POINTERS
), void *arg
, void *ebp
);
184 __ASM_GLOBAL_FUNC( call_filter
,
187 "movl 20(%esp), %ebp\n\t"
193 extern void *call_handler( void * (*func
)(void), void *ebp
);
195 __ASM_GLOBAL_FUNC( call_handler
,
200 "movl 24(%esp), %ebp\n\t"
208 static inline void dump_type( const cxx_type_info
*type
)
210 TRACE( "flags %x type %p %s offsets %d,%d,%d size %d copy ctor %p\n",
211 type
->flags
, type
->type_info
, dbgstr_type_info(type
->type_info
),
212 type
->offsets
.this_offset
, type
->offsets
.vbase_descr
, type
->offsets
.vbase_offset
,
213 type
->size
, type
->copy_ctor
);
216 static void dump_exception_type( const cxx_exception_type
*type
)
220 TRACE( "flags %x destr %p handler %p type info %p\n",
221 type
->flags
, type
->destructor
, type
->custom_handler
, type
->type_info_table
);
222 for (i
= 0; i
< type
->type_info_table
->count
; i
++)
225 dump_type( type
->type_info_table
->info
[i
] );
229 static void dump_function_descr( const cxx_function_descr
*descr
)
234 TRACE( "magic %x\n", descr
->magic
);
235 TRACE( "unwind table: %p %d\n", descr
->unwind_table
, descr
->unwind_count
);
236 for (i
= 0; i
< descr
->unwind_count
; i
++)
238 TRACE( " %d: prev %d func %p\n", i
,
239 descr
->unwind_table
[i
].prev
, descr
->unwind_table
[i
].handler
);
241 TRACE( "try table: %p %d\n", descr
->tryblock
, descr
->tryblock_count
);
242 for (i
= 0; i
< descr
->tryblock_count
; i
++)
244 TRACE( " %d: start %d end %d catchlevel %d catch %p %d\n", i
,
245 descr
->tryblock
[i
].start_level
, descr
->tryblock
[i
].end_level
,
246 descr
->tryblock
[i
].catch_level
, descr
->tryblock
[i
].catchblock
,
247 descr
->tryblock
[i
].catchblock_count
);
248 for (j
= 0; j
< descr
->tryblock
[i
].catchblock_count
; j
++)
250 const catchblock_info
*ptr
= &descr
->tryblock
[i
].catchblock
[j
];
251 TRACE( " %d: flags %x offset %d handler %p type %p %s\n",
252 j
, ptr
->flags
, ptr
->offset
, ptr
->handler
,
253 ptr
->type_info
, dbgstr_type_info( ptr
->type_info
) );
256 if (descr
->magic
<= CXX_FRAME_MAGIC_VC6
) return;
257 TRACE( "expect list: %p\n", descr
->expect_list
);
258 if (descr
->magic
<= CXX_FRAME_MAGIC_VC7
) return;
259 TRACE( "flags: %08x\n", descr
->flags
);
262 /* check if the exception type is caught by a given catch block, and return the type that matched */
263 static const cxx_type_info
*find_caught_type( cxx_exception_type
*exc_type
,
264 const type_info
*catch_ti
, UINT catch_flags
)
268 for (i
= 0; i
< exc_type
->type_info_table
->count
; i
++)
270 const cxx_type_info
*type
= exc_type
->type_info_table
->info
[i
];
272 if (!catch_ti
) return type
; /* catch(...) matches any type */
273 if (catch_ti
!= type
->type_info
)
275 if (strcmp( catch_ti
->mangled
, type
->type_info
->mangled
)) continue;
277 /* type is the same, now check the flags */
278 if ((exc_type
->flags
& TYPE_FLAG_CONST
) &&
279 !(catch_flags
& TYPE_FLAG_CONST
)) continue;
280 if ((exc_type
->flags
& TYPE_FLAG_VOLATILE
) &&
281 !(catch_flags
& TYPE_FLAG_VOLATILE
)) continue;
282 return type
; /* it matched */
288 /* copy the exception object where the catch block wants it */
289 static void copy_exception( void *object
, cxx_exception_frame
*frame
,
290 const catchblock_info
*catchblock
, const cxx_type_info
*type
)
294 if (!catchblock
->type_info
|| !catchblock
->type_info
->mangled
[0]) return;
295 if (!catchblock
->offset
) return;
296 dest_ptr
= (void **)((char *)&frame
->ebp
+ catchblock
->offset
);
298 if (catchblock
->flags
& TYPE_FLAG_REFERENCE
)
300 *dest_ptr
= get_this_pointer( &type
->offsets
, object
);
302 else if (type
->flags
& CLASS_IS_SIMPLE_TYPE
)
304 memmove( dest_ptr
, object
, type
->size
);
305 /* if it is a pointer, adjust it */
306 if (type
->size
== sizeof(void *)) *dest_ptr
= get_this_pointer( &type
->offsets
, *dest_ptr
);
308 else /* copy the object */
311 call_copy_ctor( type
->copy_ctor
, dest_ptr
, get_this_pointer(&type
->offsets
,object
),
312 (type
->flags
& CLASS_HAS_VIRTUAL_BASE_CLASS
) );
314 memmove( dest_ptr
, get_this_pointer(&type
->offsets
,object
), type
->size
);
318 /* unwind the local function up to a given trylevel */
319 static void cxx_local_unwind( cxx_exception_frame
* frame
, const cxx_function_descr
*descr
, int last_level
)
321 void * (*handler
)(void);
322 int trylevel
= frame
->trylevel
;
324 while (trylevel
!= last_level
)
326 if (trylevel
< 0 || trylevel
>= descr
->unwind_count
)
328 ERR( "invalid trylevel %d\n", trylevel
);
331 handler
= descr
->unwind_table
[trylevel
].handler
;
334 TRACE( "calling unwind handler %p trylevel %d last %d ebp %p\n",
335 handler
, trylevel
, last_level
, &frame
->ebp
);
336 call_handler( handler
, &frame
->ebp
);
338 trylevel
= descr
->unwind_table
[trylevel
].prev
;
340 frame
->trylevel
= last_level
;
343 /* handler for exceptions happening while calling a catch function */
344 static DWORD
catch_function_nested_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
345 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
347 catch_func_nested_frame
*nested_frame
= (catch_func_nested_frame
*)frame
;
349 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
351 __CxxUnregisterExceptionObject(&nested_frame
->frame_info
, FALSE
);
352 return ExceptionContinueSearch
;
355 TRACE( "got nested exception in catch function\n" );
357 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
359 PEXCEPTION_RECORD prev_rec
= msvcrt_get_thread_data()->exc_record
;
361 if((rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0) ||
362 (prev_rec
->ExceptionCode
== CXX_EXCEPTION
&&
363 rec
->ExceptionInformation
[1] == prev_rec
->ExceptionInformation
[1] &&
364 rec
->ExceptionInformation
[2] == prev_rec
->ExceptionInformation
[2]))
366 /* exception was rethrown */
368 rec
->ExceptionFlags
&= ~EH_UNWINDING
;
370 TRACE("detect rethrow: exception code: %x\n", rec
->ExceptionCode
);
371 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
372 TRACE("re-propagate: obj: %lx, type: %lx\n",
373 rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[2]);
378 TRACE("detect threw new exception in catch block\n");
382 return cxx_frame_handler( rec
, nested_frame
->cxx_frame
, context
,
383 NULL
, nested_frame
->descr
, nested_frame
);
386 /* find and call the appropriate catch block for an exception */
387 /* returns the address to continue execution to after the catch block was called */
388 static inline void call_catch_block( PEXCEPTION_RECORD rec
, CONTEXT
*context
,
389 cxx_exception_frame
*frame
,
390 const cxx_function_descr
*descr
,
391 catch_func_nested_frame
*catch_frame
,
392 cxx_exception_type
*info
)
396 void *addr
, *object
= (void *)rec
->ExceptionInformation
[1];
397 catch_func_nested_frame nested_frame
;
398 int trylevel
= frame
->trylevel
;
399 DWORD save_esp
= ((DWORD
*)frame
)[-1];
400 thread_data_t
*data
= msvcrt_get_thread_data();
402 data
->processing_throw
++;
403 for (i
= 0; i
< descr
->tryblock_count
; i
++)
405 const tryblock_info
*tryblock
= &descr
->tryblock
[i
];
407 /* only handle try blocks inside current catch block */
408 if (catch_frame
&& catch_frame
->trylevel
> tryblock
->start_level
) continue;
410 if (trylevel
< tryblock
->start_level
) continue;
411 if (trylevel
> tryblock
->end_level
) continue;
413 /* got a try block */
414 for (j
= 0; j
< tryblock
->catchblock_count
; j
++)
416 const catchblock_info
*catchblock
= &tryblock
->catchblock
[j
];
419 const cxx_type_info
*type
= find_caught_type( info
,
420 catchblock
->type_info
, catchblock
->flags
);
423 TRACE( "matched type %p in tryblock %d catchblock %d\n", type
, i
, j
);
425 /* copy the exception to its destination on the stack */
426 copy_exception( object
, frame
, catchblock
, type
);
430 /* no CXX_EXCEPTION only proceed with a catch(...) block*/
431 if(catchblock
->type_info
)
433 TRACE("found catch(...) block\n");
436 /* Add frame info here so exception is not freed inside RtlUnwind call */
437 _CreateFrameInfo(&nested_frame
.frame_info
.frame_info
,
438 (void*)rec
->ExceptionInformation
[1]);
440 /* unwind the stack */
441 RtlUnwind( catch_frame
? &catch_frame
->frame
: &frame
->frame
, 0, rec
, 0 );
442 cxx_local_unwind( frame
, descr
, tryblock
->start_level
);
443 frame
->trylevel
= tryblock
->end_level
+ 1;
445 nested_frame
.frame_info
.rec
= data
->exc_record
;
446 nested_frame
.frame_info
.context
= data
->ctx_record
;
447 data
->exc_record
= rec
;
448 data
->ctx_record
= context
;
449 data
->processing_throw
--;
451 /* call the catch block */
452 TRACE( "calling catch block %p addr %p ebp %p\n",
453 catchblock
, catchblock
->handler
, &frame
->ebp
);
455 /* setup an exception block for nested exceptions */
456 nested_frame
.frame
.Handler
= catch_function_nested_handler
;
457 nested_frame
.cxx_frame
= frame
;
458 nested_frame
.descr
= descr
;
459 nested_frame
.trylevel
= tryblock
->end_level
+ 1;
461 __wine_push_frame( &nested_frame
.frame
);
462 addr
= call_handler( catchblock
->handler
, &frame
->ebp
);
463 __wine_pop_frame( &nested_frame
.frame
);
465 ((DWORD
*)frame
)[-1] = save_esp
;
466 __CxxUnregisterExceptionObject(&nested_frame
.frame_info
, FALSE
);
467 TRACE( "done, continuing at %p\n", addr
);
469 continue_after_catch( frame
, addr
);
472 data
->processing_throw
--;
475 /*********************************************************************
476 * __CxxExceptionFilter (MSVCRT.@)
478 int CDECL
__CxxExceptionFilter( PEXCEPTION_POINTERS ptrs
,
479 const type_info
*ti
, int flags
, void **copy
)
481 const cxx_type_info
*type
;
482 PEXCEPTION_RECORD rec
;
484 TRACE( "%p %p %x %p\n", ptrs
, ti
, flags
, copy
);
486 if (!ptrs
) return EXCEPTION_CONTINUE_SEARCH
;
488 /* handle catch(...) */
489 if (!ti
) return EXCEPTION_EXECUTE_HANDLER
;
491 rec
= ptrs
->ExceptionRecord
;
492 if (rec
->ExceptionCode
!= CXX_EXCEPTION
|| rec
->NumberParameters
!= 3 ||
493 rec
->ExceptionInformation
[0] < CXX_FRAME_MAGIC_VC6
||
494 rec
->ExceptionInformation
[0] > CXX_FRAME_MAGIC_VC8
)
495 return EXCEPTION_CONTINUE_SEARCH
;
497 if (rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0)
499 rec
= msvcrt_get_thread_data()->exc_record
;
500 if (!rec
) return EXCEPTION_CONTINUE_SEARCH
;
503 type
= find_caught_type( (cxx_exception_type
*)rec
->ExceptionInformation
[2], ti
, flags
);
504 if (!type
) return EXCEPTION_CONTINUE_SEARCH
;
508 void *object
= (void *)rec
->ExceptionInformation
[1];
510 if (flags
& TYPE_FLAG_REFERENCE
)
512 *copy
= get_this_pointer( &type
->offsets
, object
);
514 else if (type
->flags
& CLASS_IS_SIMPLE_TYPE
)
516 memmove( copy
, object
, type
->size
);
517 /* if it is a pointer, adjust it */
518 if (type
->size
== sizeof(void*)) *copy
= get_this_pointer( &type
->offsets
, *copy
);
520 else /* copy the object */
523 call_copy_ctor( type
->copy_ctor
, copy
, get_this_pointer(&type
->offsets
,object
),
524 (type
->flags
& CLASS_HAS_VIRTUAL_BASE_CLASS
) );
526 memmove( copy
, get_this_pointer(&type
->offsets
,object
), type
->size
);
529 return EXCEPTION_EXECUTE_HANDLER
;
532 static LONG CALLBACK
se_translation_filter( EXCEPTION_POINTERS
*ep
, void *c
)
534 se_translator_ctx
*ctx
= (se_translator_ctx
*)c
;
535 EXCEPTION_RECORD
*rec
= ep
->ExceptionRecord
;
536 cxx_exception_type
*exc_type
;
538 if (rec
->ExceptionCode
!= CXX_EXCEPTION
)
540 TRACE( "non-c++ exception thrown in SEH handler: %x\n", rec
->ExceptionCode
);
544 exc_type
= (cxx_exception_type
*)rec
->ExceptionInformation
[2];
545 call_catch_block( rec
, ep
->ContextRecord
, ctx
->frame
, ctx
->descr
,
546 ctx
->nested_frame
, exc_type
);
548 __DestructExceptionObject( rec
);
549 return ExceptionContinueSearch
;
552 static void check_noexcept( PEXCEPTION_RECORD rec
,
553 const cxx_function_descr
*descr
, BOOL nested
)
555 if (!nested
&& rec
->ExceptionCode
== CXX_EXCEPTION
&&
556 descr
->magic
>= CXX_FRAME_MAGIC_VC8
&&
557 (descr
->flags
& FUNC_DESCR_NOEXCEPT
))
559 ERR("noexcept function propagating exception\n");
564 /*********************************************************************
567 * Implementation of __CxxFrameHandler.
569 DWORD CDECL
cxx_frame_handler( PEXCEPTION_RECORD rec
, cxx_exception_frame
* frame
,
570 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
,
571 const cxx_function_descr
*descr
,
572 catch_func_nested_frame
* nested_frame
)
574 cxx_exception_type
*exc_type
;
576 if (descr
->magic
< CXX_FRAME_MAGIC_VC6
|| descr
->magic
> CXX_FRAME_MAGIC_VC8
)
578 ERR( "invalid frame magic %x\n", descr
->magic
);
579 return ExceptionContinueSearch
;
581 if (descr
->magic
>= CXX_FRAME_MAGIC_VC8
&&
582 (descr
->flags
& FUNC_DESCR_SYNCHRONOUS
) &&
583 (rec
->ExceptionCode
!= CXX_EXCEPTION
))
584 return ExceptionContinueSearch
; /* handle only c++ exceptions */
586 if (rec
->ExceptionFlags
& (EH_UNWINDING
|EH_EXIT_UNWIND
))
588 if (descr
->unwind_count
&& !nested_frame
) cxx_local_unwind( frame
, descr
, -1 );
589 return ExceptionContinueSearch
;
591 if (!descr
->tryblock_count
)
593 check_noexcept(rec
, descr
, nested_frame
!= NULL
);
594 return ExceptionContinueSearch
;
597 if(rec
->ExceptionCode
== CXX_EXCEPTION
&&
598 rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0)
600 *rec
= *msvcrt_get_thread_data()->exc_record
;
601 rec
->ExceptionFlags
&= ~EH_UNWINDING
;
603 TRACE("detect rethrow: exception code: %x\n", rec
->ExceptionCode
);
604 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
605 TRACE("re-propagate: obj: %lx, type: %lx\n",
606 rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[2]);
610 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
612 exc_type
= (cxx_exception_type
*)rec
->ExceptionInformation
[2];
614 if (rec
->ExceptionInformation
[0] > CXX_FRAME_MAGIC_VC8
&&
615 exc_type
->custom_handler
)
617 return exc_type
->custom_handler( rec
, frame
, context
, dispatch
, descr
,
618 nested_frame
? nested_frame
->trylevel
: 0,
619 nested_frame
? &nested_frame
->frame
: NULL
, 0 );
624 TRACE("handling C++ exception rec %p frame %p trylevel %d descr %p nested_frame %p\n",
625 rec
, frame
, frame
->trylevel
, descr
, nested_frame
);
626 dump_exception_type( exc_type
);
627 dump_function_descr( descr
);
632 thread_data_t
*data
= msvcrt_get_thread_data();
635 TRACE("handling C exception code %x rec %p frame %p trylevel %d descr %p nested_frame %p\n",
636 rec
->ExceptionCode
, rec
, frame
, frame
->trylevel
, descr
, nested_frame
);
638 if (data
->se_translator
) {
639 EXCEPTION_POINTERS except_ptrs
;
640 se_translator_ctx ctx
;
644 ctx
.nested_frame
= nested_frame
;
647 except_ptrs
.ExceptionRecord
= rec
;
648 except_ptrs
.ContextRecord
= context
;
649 data
->se_translator( rec
->ExceptionCode
, &except_ptrs
);
651 __EXCEPT_CTX(se_translation_filter
, &ctx
)
658 call_catch_block( rec
, context
, frame
, descr
,
659 nested_frame
, exc_type
);
660 check_noexcept(rec
, descr
, nested_frame
!= NULL
);
661 return ExceptionContinueSearch
;
665 /*********************************************************************
666 * __CxxFrameHandler (MSVCRT.@)
668 extern DWORD CDECL
__CxxFrameHandler( PEXCEPTION_RECORD rec
, EXCEPTION_REGISTRATION_RECORD
* frame
,
669 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
);
670 __ASM_GLOBAL_FUNC( __CxxFrameHandler
,
671 "pushl $0\n\t" /* nested_frame */
672 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
673 "pushl %eax\n\t" /* descr */
674 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
675 "pushl 24(%esp)\n\t" /* dispatch */
676 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
677 "pushl 24(%esp)\n\t" /* context */
678 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
679 "pushl 24(%esp)\n\t" /* frame */
680 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
681 "pushl 24(%esp)\n\t" /* rec */
682 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
683 "call " __ASM_NAME("cxx_frame_handler") "\n\t"
685 __ASM_CFI(".cfi_adjust_cfa_offset -24\n\t")
689 /*********************************************************************
690 * __CxxLongjmpUnwind (MSVCRT.@)
692 * Callback meant to be used as UnwindFunc for setjmp/longjmp.
694 void __stdcall
__CxxLongjmpUnwind( const struct MSVCRT___JUMP_BUFFER
*buf
)
696 cxx_exception_frame
*frame
= (cxx_exception_frame
*)buf
->Registration
;
697 const cxx_function_descr
*descr
= (const cxx_function_descr
*)buf
->UnwindData
[0];
699 TRACE( "unwinding frame %p descr %p trylevel %ld\n", frame
, descr
, buf
->TryLevel
);
700 cxx_local_unwind( frame
, descr
, buf
->TryLevel
);
703 /*********************************************************************
704 * __CppXcptFilter (MSVCRT.@)
706 int CDECL
__CppXcptFilter(NTSTATUS ex
, PEXCEPTION_POINTERS ptr
)
708 /* only filter c++ exceptions */
709 if (ex
!= CXX_EXCEPTION
) return EXCEPTION_CONTINUE_SEARCH
;
710 return _XcptFilter( ex
, ptr
);
713 /*********************************************************************
714 * __CxxDetectRethrow (MSVCRT.@)
716 BOOL CDECL
__CxxDetectRethrow(PEXCEPTION_POINTERS ptrs
)
718 PEXCEPTION_RECORD rec
;
723 rec
= ptrs
->ExceptionRecord
;
725 if (rec
->ExceptionCode
== CXX_EXCEPTION
&&
726 rec
->NumberParameters
== 3 &&
727 rec
->ExceptionInformation
[0] == CXX_FRAME_MAGIC_VC6
&&
728 rec
->ExceptionInformation
[2])
730 ptrs
->ExceptionRecord
= msvcrt_get_thread_data()->exc_record
;
733 return (msvcrt_get_thread_data()->exc_record
== rec
);
736 /*********************************************************************
737 * __CxxQueryExceptionSize (MSVCRT.@)
739 unsigned int CDECL
__CxxQueryExceptionSize(void)
741 return sizeof(cxx_exception_type
);
745 /*********************************************************************
746 * _EH_prolog (MSVCRT.@)
749 /* Provided for VC++ binary compatibility only */
750 __ASM_GLOBAL_FUNC(_EH_prolog
,
751 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") /* skip ret addr */
753 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
755 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
757 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
758 "movl %esp, %fs:0\n\t"
759 "movl 12(%esp), %eax\n\t"
760 "movl %ebp, 12(%esp)\n\t"
761 "leal 12(%esp), %ebp\n\t"
763 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
766 static const SCOPETABLE_V4
*get_scopetable_v4( MSVCRT_EXCEPTION_FRAME
*frame
, ULONG_PTR cookie
)
768 return (const SCOPETABLE_V4
*)((ULONG_PTR
)frame
->scopetable
^ cookie
);
771 static DWORD
MSVCRT_nested_handler(PEXCEPTION_RECORD rec
,
772 EXCEPTION_REGISTRATION_RECORD
* frame
,
774 EXCEPTION_REGISTRATION_RECORD
** dispatch
)
776 if (!(rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)))
777 return ExceptionContinueSearch
;
779 return ExceptionCollidedUnwind
;
782 static void msvcrt_local_unwind2(MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
, void *ebp
)
784 EXCEPTION_REGISTRATION_RECORD reg
;
786 TRACE("(%p,%d,%d)\n",frame
, frame
->trylevel
, trylevel
);
788 /* Register a handler in case of a nested exception */
789 reg
.Handler
= MSVCRT_nested_handler
;
790 reg
.Prev
= NtCurrentTeb()->Tib
.ExceptionList
;
791 __wine_push_frame(®
);
793 while (frame
->trylevel
!= TRYLEVEL_END
&& frame
->trylevel
!= trylevel
)
795 int level
= frame
->trylevel
;
796 frame
->trylevel
= frame
->scopetable
[level
].previousTryLevel
;
797 if (!frame
->scopetable
[level
].lpfnFilter
)
799 TRACE( "__try block cleanup level %d handler %p ebp %p\n",
800 level
, frame
->scopetable
[level
].lpfnHandler
, ebp
);
801 call_handler( frame
->scopetable
[level
].lpfnHandler
, ebp
);
804 __wine_pop_frame(®
);
805 TRACE("unwound OK\n");
808 static void msvcrt_local_unwind4( ULONG
*cookie
, MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
, void *ebp
)
810 EXCEPTION_REGISTRATION_RECORD reg
;
811 const SCOPETABLE_V4
*scopetable
= get_scopetable_v4( frame
, *cookie
);
813 TRACE("(%p,%d,%d)\n",frame
, frame
->trylevel
, trylevel
);
815 /* Register a handler in case of a nested exception */
816 reg
.Handler
= MSVCRT_nested_handler
;
817 reg
.Prev
= NtCurrentTeb()->Tib
.ExceptionList
;
818 __wine_push_frame(®
);
820 while (frame
->trylevel
!= -2 && frame
->trylevel
!= trylevel
)
822 int level
= frame
->trylevel
;
823 frame
->trylevel
= scopetable
->entries
[level
].previousTryLevel
;
824 if (!scopetable
->entries
[level
].lpfnFilter
)
826 TRACE( "__try block cleanup level %d handler %p ebp %p\n",
827 level
, scopetable
->entries
[level
].lpfnHandler
, ebp
);
828 call_handler( scopetable
->entries
[level
].lpfnHandler
, ebp
);
831 __wine_pop_frame(®
);
832 TRACE("unwound OK\n");
835 /*******************************************************************
836 * _local_unwind2 (MSVCRT.@)
838 void CDECL
_local_unwind2(MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
)
840 msvcrt_local_unwind2( frame
, trylevel
, &frame
->_ebp
);
843 /*******************************************************************
844 * _local_unwind4 (MSVCRT.@)
846 void CDECL
_local_unwind4( ULONG
*cookie
, MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
)
848 msvcrt_local_unwind4( cookie
, frame
, trylevel
, &frame
->_ebp
);
851 /*******************************************************************
852 * _global_unwind2 (MSVCRT.@)
854 void CDECL
_global_unwind2(EXCEPTION_REGISTRATION_RECORD
* frame
)
856 TRACE("(%p)\n",frame
);
857 RtlUnwind( frame
, 0, 0, 0 );
860 /*********************************************************************
861 * _except_handler2 (MSVCRT.@)
863 int CDECL
_except_handler2(PEXCEPTION_RECORD rec
,
864 EXCEPTION_REGISTRATION_RECORD
* frame
,
866 EXCEPTION_REGISTRATION_RECORD
** dispatcher
)
868 FIXME("exception %x flags=%x at %p handler=%p %p %p stub\n",
869 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
870 frame
->Handler
, context
, dispatcher
);
871 return ExceptionContinueSearch
;
874 /*********************************************************************
875 * _except_handler3 (MSVCRT.@)
877 int CDECL
_except_handler3(PEXCEPTION_RECORD rec
,
878 MSVCRT_EXCEPTION_FRAME
* frame
,
879 PCONTEXT context
, void* dispatcher
)
881 int retval
, trylevel
;
882 EXCEPTION_POINTERS exceptPtrs
;
883 PSCOPETABLE pScopeTable
;
885 TRACE("exception %x flags=%x at %p handler=%p %p %p semi-stub\n",
886 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
887 frame
->handler
, context
, dispatcher
);
889 __asm__
__volatile__ ("cld");
891 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
893 /* Unwinding the current frame */
894 msvcrt_local_unwind2(frame
, TRYLEVEL_END
, &frame
->_ebp
);
895 TRACE("unwound current frame, returning ExceptionContinueSearch\n");
896 return ExceptionContinueSearch
;
900 /* Hunting for handler */
901 exceptPtrs
.ExceptionRecord
= rec
;
902 exceptPtrs
.ContextRecord
= context
;
903 *((DWORD
*)frame
-1) = (DWORD
)&exceptPtrs
;
904 trylevel
= frame
->trylevel
;
905 pScopeTable
= frame
->scopetable
;
907 while (trylevel
!= TRYLEVEL_END
)
909 TRACE( "level %d prev %d filter %p\n", trylevel
, pScopeTable
[trylevel
].previousTryLevel
,
910 pScopeTable
[trylevel
].lpfnFilter
);
911 if (pScopeTable
[trylevel
].lpfnFilter
)
913 retval
= call_filter( pScopeTable
[trylevel
].lpfnFilter
, &exceptPtrs
, &frame
->_ebp
);
915 TRACE("filter returned %s\n", retval
== EXCEPTION_CONTINUE_EXECUTION
?
916 "CONTINUE_EXECUTION" : retval
== EXCEPTION_EXECUTE_HANDLER
?
917 "EXECUTE_HANDLER" : "CONTINUE_SEARCH");
919 if (retval
== EXCEPTION_CONTINUE_EXECUTION
)
920 return ExceptionContinueExecution
;
922 if (retval
== EXCEPTION_EXECUTE_HANDLER
)
924 /* Unwind all higher frames, this one will handle the exception */
925 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)frame
);
926 msvcrt_local_unwind2(frame
, trylevel
, &frame
->_ebp
);
928 /* Set our trylevel to the enclosing block, and call the __finally
929 * code, which won't return
931 frame
->trylevel
= pScopeTable
[trylevel
].previousTryLevel
;
932 TRACE("__finally block %p\n",pScopeTable
[trylevel
].lpfnHandler
);
933 call_finally_block(pScopeTable
[trylevel
].lpfnHandler
, &frame
->_ebp
);
936 trylevel
= pScopeTable
[trylevel
].previousTryLevel
;
939 TRACE("reached TRYLEVEL_END, returning ExceptionContinueSearch\n");
940 return ExceptionContinueSearch
;
943 /*********************************************************************
944 * _except_handler4_common (MSVCRT.@)
946 int CDECL
_except_handler4_common( ULONG
*cookie
, void (*check_cookie
)(void),
947 EXCEPTION_RECORD
*rec
, MSVCRT_EXCEPTION_FRAME
*frame
,
948 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
950 int retval
, trylevel
;
951 EXCEPTION_POINTERS exceptPtrs
;
952 const SCOPETABLE_V4
*scope_table
= get_scopetable_v4( frame
, *cookie
);
954 TRACE( "exception %x flags=%x at %p handler=%p %p %p cookie=%x scope table=%p cookies=%d/%x,%d/%x\n",
955 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
956 frame
->handler
, context
, dispatcher
, *cookie
, scope_table
,
957 scope_table
->gs_cookie_offset
, scope_table
->gs_cookie_xor
,
958 scope_table
->eh_cookie_offset
, scope_table
->eh_cookie_xor
);
960 /* FIXME: no cookie validation yet */
962 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
964 /* Unwinding the current frame */
965 msvcrt_local_unwind4( cookie
, frame
, -2, &frame
->_ebp
);
966 TRACE("unwound current frame, returning ExceptionContinueSearch\n");
967 return ExceptionContinueSearch
;
971 /* Hunting for handler */
972 exceptPtrs
.ExceptionRecord
= rec
;
973 exceptPtrs
.ContextRecord
= context
;
974 *((DWORD
*)frame
-1) = (DWORD
)&exceptPtrs
;
975 trylevel
= frame
->trylevel
;
977 while (trylevel
!= -2)
979 TRACE( "level %d prev %d filter %p\n", trylevel
,
980 scope_table
->entries
[trylevel
].previousTryLevel
,
981 scope_table
->entries
[trylevel
].lpfnFilter
);
982 if (scope_table
->entries
[trylevel
].lpfnFilter
)
984 retval
= call_filter( scope_table
->entries
[trylevel
].lpfnFilter
, &exceptPtrs
, &frame
->_ebp
);
986 TRACE("filter returned %s\n", retval
== EXCEPTION_CONTINUE_EXECUTION
?
987 "CONTINUE_EXECUTION" : retval
== EXCEPTION_EXECUTE_HANDLER
?
988 "EXECUTE_HANDLER" : "CONTINUE_SEARCH");
990 if (retval
== EXCEPTION_CONTINUE_EXECUTION
)
991 return ExceptionContinueExecution
;
993 if (retval
== EXCEPTION_EXECUTE_HANDLER
)
995 __DestructExceptionObject(rec
);
997 /* Unwind all higher frames, this one will handle the exception */
998 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)frame
);
999 msvcrt_local_unwind4( cookie
, frame
, trylevel
, &frame
->_ebp
);
1001 /* Set our trylevel to the enclosing block, and call the __finally
1002 * code, which won't return
1004 frame
->trylevel
= scope_table
->entries
[trylevel
].previousTryLevel
;
1005 TRACE("__finally block %p\n",scope_table
->entries
[trylevel
].lpfnHandler
);
1006 call_finally_block(scope_table
->entries
[trylevel
].lpfnHandler
, &frame
->_ebp
);
1009 trylevel
= scope_table
->entries
[trylevel
].previousTryLevel
;
1012 TRACE("reached -2, returning ExceptionContinueSearch\n");
1013 return ExceptionContinueSearch
;
1018 * setjmp/longjmp implementation
1021 #define MSVCRT_JMP_MAGIC 0x56433230 /* ID value for new jump structure */
1022 typedef void (__stdcall
*MSVCRT_unwind_function
)(const struct MSVCRT___JUMP_BUFFER
*);
1024 /* define an entrypoint for setjmp/setjmp3 that stores the registers in the jmp buf */
1025 /* and then jumps to the C backend function */
1026 #define DEFINE_SETJMP_ENTRYPOINT(name) \
1027 __ASM_GLOBAL_FUNC( name, \
1028 "movl 4(%esp),%ecx\n\t" /* jmp_buf */ \
1029 "movl %ebp,0(%ecx)\n\t" /* jmp_buf.Ebp */ \
1030 "movl %ebx,4(%ecx)\n\t" /* jmp_buf.Ebx */ \
1031 "movl %edi,8(%ecx)\n\t" /* jmp_buf.Edi */ \
1032 "movl %esi,12(%ecx)\n\t" /* jmp_buf.Esi */ \
1033 "movl %esp,16(%ecx)\n\t" /* jmp_buf.Esp */ \
1034 "movl 0(%esp),%eax\n\t" \
1035 "movl %eax,20(%ecx)\n\t" /* jmp_buf.Eip */ \
1036 "jmp " __ASM_NAME("__regs_") # name )
1038 /*******************************************************************
1039 * _setjmp (MSVCRT.@)
1041 DEFINE_SETJMP_ENTRYPOINT(MSVCRT__setjmp
)
1042 int CDECL DECLSPEC_HIDDEN
__regs_MSVCRT__setjmp(struct MSVCRT___JUMP_BUFFER
*jmp
)
1044 jmp
->Registration
= (unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1045 if (jmp
->Registration
== ~0UL)
1046 jmp
->TryLevel
= TRYLEVEL_END
;
1048 jmp
->TryLevel
= ((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
)->trylevel
;
1050 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
1051 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
);
1055 /*******************************************************************
1056 * _setjmp3 (MSVCRT.@)
1058 DEFINE_SETJMP_ENTRYPOINT( MSVCRT__setjmp3
)
1059 int WINAPIV DECLSPEC_HIDDEN
__regs_MSVCRT__setjmp3(struct MSVCRT___JUMP_BUFFER
*jmp
, int nb_args
, ...)
1061 jmp
->Cookie
= MSVCRT_JMP_MAGIC
;
1062 jmp
->UnwindFunc
= 0;
1063 jmp
->Registration
= (unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1064 if (jmp
->Registration
== ~0UL)
1066 jmp
->TryLevel
= TRYLEVEL_END
;
1073 va_start( args
, nb_args
);
1074 if (nb_args
> 0) jmp
->UnwindFunc
= va_arg( args
, unsigned long );
1075 if (nb_args
> 1) jmp
->TryLevel
= va_arg( args
, unsigned long );
1076 else jmp
->TryLevel
= ((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
)->trylevel
;
1077 for (i
= 0; i
< 6 && i
< nb_args
- 2; i
++)
1078 jmp
->UnwindData
[i
] = va_arg( args
, unsigned long );
1082 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
1083 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
);
1087 /*********************************************************************
1088 * longjmp (MSVCRT.@)
1090 void CDECL
MSVCRT_longjmp(struct MSVCRT___JUMP_BUFFER
*jmp
, int retval
)
1092 unsigned long cur_frame
= 0;
1094 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx retval=%08x\n",
1095 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
, retval
);
1097 cur_frame
=(unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1098 TRACE("cur_frame=%lx\n",cur_frame
);
1100 if (cur_frame
!= jmp
->Registration
)
1101 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)jmp
->Registration
);
1103 if (jmp
->Registration
)
1105 if (IsBadReadPtr(&jmp
->Cookie
, sizeof(long)) || jmp
->Cookie
!= MSVCRT_JMP_MAGIC
)
1107 msvcrt_local_unwind2((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
,
1108 jmp
->TryLevel
, (void *)jmp
->Ebp
);
1110 else if(jmp
->UnwindFunc
)
1112 MSVCRT_unwind_function unwind_func
;
1114 unwind_func
=(MSVCRT_unwind_function
)jmp
->UnwindFunc
;
1122 __wine_longjmp( (__wine_jmp_buf
*)jmp
, retval
);
1125 /*********************************************************************
1126 * _seh_longjmp_unwind (MSVCRT.@)
1128 void __stdcall
_seh_longjmp_unwind(struct MSVCRT___JUMP_BUFFER
*jmp
)
1130 msvcrt_local_unwind2( (MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
, jmp
->TryLevel
, (void *)jmp
->Ebp
);
1133 /*********************************************************************
1134 * _seh_longjmp_unwind4 (MSVCRT.@)
1136 void __stdcall
_seh_longjmp_unwind4(struct MSVCRT___JUMP_BUFFER
*jmp
)
1138 msvcrt_local_unwind4( (ULONG
*)&jmp
->Cookie
, (MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
,
1139 jmp
->TryLevel
, (void *)jmp
->Ebp
);
1142 /*********************************************************************
1143 * _fpieee_flt (MSVCRT.@)
1145 int __cdecl
_fpieee_flt(__msvcrt_ulong exception_code
, EXCEPTION_POINTERS
*ep
,
1146 int (__cdecl
*handler
)(_FPIEEE_RECORD
*))
1148 FLOATING_SAVE_AREA
*ctx
= &ep
->ContextRecord
->FloatSave
;
1152 TRACE("(%lx %p %p)\n", exception_code
, ep
, handler
);
1154 switch(exception_code
) {
1155 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1156 case STATUS_FLOAT_INEXACT_RESULT
:
1157 case STATUS_FLOAT_INVALID_OPERATION
:
1158 case STATUS_FLOAT_OVERFLOW
:
1159 case STATUS_FLOAT_UNDERFLOW
:
1162 return EXCEPTION_CONTINUE_SEARCH
;
1165 memset(&rec
, 0, sizeof(rec
));
1166 rec
.RoundingMode
= ctx
->ControlWord
>> 10;
1167 switch((ctx
->ControlWord
>> 8) & 0x3) {
1168 case 0: rec
.Precision
= 2; break;
1169 case 1: rec
.Precision
= 3; break;
1170 case 2: rec
.Precision
= 1; break;
1171 case 3: rec
.Precision
= 0; break;
1173 rec
.Status
.InvalidOperation
= ctx
->StatusWord
& 0x1;
1174 rec
.Status
.ZeroDivide
= ((ctx
->StatusWord
& 0x4) != 0);
1175 rec
.Status
.Overflow
= ((ctx
->StatusWord
& 0x8) != 0);
1176 rec
.Status
.Underflow
= ((ctx
->StatusWord
& 0x10) != 0);
1177 rec
.Status
.Inexact
= ((ctx
->StatusWord
& 0x20) != 0);
1178 rec
.Enable
.InvalidOperation
= ((ctx
->ControlWord
& 0x1) == 0);
1179 rec
.Enable
.ZeroDivide
= ((ctx
->ControlWord
& 0x4) == 0);
1180 rec
.Enable
.Overflow
= ((ctx
->ControlWord
& 0x8) == 0);
1181 rec
.Enable
.Underflow
= ((ctx
->ControlWord
& 0x10) == 0);
1182 rec
.Enable
.Inexact
= ((ctx
->ControlWord
& 0x20) == 0);
1183 rec
.Cause
.InvalidOperation
= rec
.Enable
.InvalidOperation
& rec
.Status
.InvalidOperation
;
1184 rec
.Cause
.ZeroDivide
= rec
.Enable
.ZeroDivide
& rec
.Status
.ZeroDivide
;
1185 rec
.Cause
.Overflow
= rec
.Enable
.Overflow
& rec
.Status
.Overflow
;
1186 rec
.Cause
.Underflow
= rec
.Enable
.Underflow
& rec
.Status
.Underflow
;
1187 rec
.Cause
.Inexact
= rec
.Enable
.Inexact
& rec
.Status
.Inexact
;
1189 TRACE("opcode: %x\n", *(ULONG
*)ep
->ContextRecord
->FloatSave
.ErrorOffset
);
1191 if(*(WORD
*)ctx
->ErrorOffset
== 0x35dc) { /* fdiv m64fp */
1192 if(exception_code
==STATUS_FLOAT_DIVIDE_BY_ZERO
|| exception_code
==STATUS_FLOAT_INVALID_OPERATION
) {
1193 rec
.Operand1
.OperandValid
= 1;
1194 rec
.Result
.OperandValid
= 0;
1196 rec
.Operand1
.OperandValid
= 0;
1197 rec
.Result
.OperandValid
= 1;
1199 rec
.Operand2
.OperandValid
= 1;
1200 rec
.Operation
= _FpCodeDivide
;
1201 rec
.Operand1
.Format
= _FpFormatFp80
;
1202 memcpy(&rec
.Operand1
.Value
.Fp80Value
, ctx
->RegisterArea
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1203 rec
.Operand2
.Format
= _FpFormatFp64
;
1204 rec
.Operand2
.Value
.Fp64Value
= *(double*)ctx
->DataOffset
;
1205 rec
.Result
.Format
= _FpFormatFp80
;
1206 memcpy(&rec
.Result
.Value
.Fp80Value
, ctx
->RegisterArea
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1208 ret
= handler(&rec
);
1210 if(ret
== EXCEPTION_CONTINUE_EXECUTION
)
1211 memcpy(ctx
->RegisterArea
, &rec
.Result
.Value
.Fp80Value
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1215 FIXME("unsupported opcode: %x\n", *(ULONG
*)ep
->ContextRecord
->FloatSave
.ErrorOffset
);
1216 return EXCEPTION_CONTINUE_SEARCH
;
1219 #endif /* __i386__ */