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.
29 #include "wine/port.h"
39 #include "wine/exception.h"
41 #include "wine/debug.h"
43 #include "cppexcept.h"
45 WINE_DEFAULT_DEBUG_CHANNEL(seh
);
48 /* the exception frame used by CxxFrameHandler */
49 typedef struct __cxx_exception_frame
51 EXCEPTION_REGISTRATION_RECORD frame
; /* the standard exception frame */
54 } cxx_exception_frame
;
56 /* info about a single catch {} block */
57 typedef struct __catchblock_info
59 UINT flags
; /* flags (see below) */
60 const type_info
*type_info
; /* C++ type caught by this block */
61 int offset
; /* stack offset to copy exception object to */
62 void (*handler
)(void);/* catch block handler code */
64 #define TYPE_FLAG_CONST 1
65 #define TYPE_FLAG_VOLATILE 2
66 #define TYPE_FLAG_REFERENCE 8
68 /* info about a single try {} block */
69 typedef struct __tryblock_info
71 int start_level
; /* start trylevel of that block */
72 int end_level
; /* end trylevel of that block */
73 int catch_level
; /* initial trylevel of the catch block */
74 int catchblock_count
; /* count of catch blocks in array */
75 const catchblock_info
*catchblock
; /* array of catch blocks */
78 /* info about the unwind handler for a given trylevel */
79 typedef struct __unwind_info
81 int prev
; /* prev trylevel unwind handler, to run after this one */
82 void (*handler
)(void);/* unwind handler */
85 /* descriptor of all try blocks of a given function */
86 typedef struct __cxx_function_descr
88 UINT magic
; /* must be CXX_FRAME_MAGIC */
89 UINT unwind_count
; /* number of unwind handlers */
90 const unwind_info
*unwind_table
; /* array of unwind handlers */
91 UINT tryblock_count
; /* number of try blocks */
92 const tryblock_info
*tryblock
; /* array of try blocks */
95 const void *expect_list
; /* expected exceptions list when magic >= VC7 */
96 UINT flags
; /* flags when magic >= VC8 */
99 typedef struct _SCOPETABLE
101 int previousTryLevel
;
102 int (*lpfnFilter
)(PEXCEPTION_POINTERS
);
103 int (*lpfnHandler
)(void);
104 } SCOPETABLE
, *PSCOPETABLE
;
106 typedef struct _MSVCRT_EXCEPTION_FRAME
108 EXCEPTION_REGISTRATION_RECORD
*prev
;
109 void (*handler
)(PEXCEPTION_RECORD
, EXCEPTION_REGISTRATION_RECORD
*,
110 PCONTEXT
, PEXCEPTION_RECORD
);
111 PSCOPETABLE scopetable
;
114 PEXCEPTION_POINTERS xpointers
;
115 } MSVCRT_EXCEPTION_FRAME
;
119 int gs_cookie_offset
;
121 int eh_cookie_offset
;
123 SCOPETABLE entries
[1];
126 #define TRYLEVEL_END (-1) /* End of trylevel list */
128 DWORD CDECL
cxx_frame_handler( PEXCEPTION_RECORD rec
, cxx_exception_frame
* frame
,
129 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
,
130 const cxx_function_descr
*descr
,
131 EXCEPTION_REGISTRATION_RECORD
* nested_frame
, int nested_trylevel
);
133 /* call a function with a given ebp */
134 static inline void *call_ebp_func( void *func
, void *ebp
)
138 __asm__
__volatile__ ("pushl %%ebx\n\t"
144 : "=a" (ret
), "=S" (dummy
), "=D" (dummy
)
145 : "0" (func
), "1" (ebp
) : "ecx", "edx", "memory" );
149 /* call a copy constructor */
150 static inline void call_copy_ctor( void *func
, void *this, void *src
, int has_vbase
)
152 TRACE( "calling copy ctor %p object %p src %p\n", func
, this, src
);
154 /* in that case copy ctor takes an extra bool indicating whether to copy the base class */
155 __asm__
__volatile__("pushl $1; pushl %2; call *%0"
156 : : "r" (func
), "c" (this), "r" (src
) : "eax", "edx", "memory" );
158 __asm__
__volatile__("pushl %2; call *%0"
159 : : "r" (func
), "c" (this), "r" (src
) : "eax", "edx", "memory" );
162 /* continue execution to the specified address after exception is caught */
163 static inline void DECLSPEC_NORETURN
continue_after_catch( cxx_exception_frame
* frame
, void *addr
)
165 __asm__
__volatile__("movl -4(%0),%%esp; leal 12(%0),%%ebp; jmp *%1"
166 : : "r" (frame
), "a" (addr
) );
167 for (;;) ; /* unreached */
170 static inline void call_finally_block( void *code_block
, void *base_ptr
)
172 __asm__
__volatile__ ("movl %1,%%ebp; call *%%eax"
173 : : "a" (code_block
), "g" (base_ptr
));
176 static inline int call_filter( int (*func
)(PEXCEPTION_POINTERS
), void *arg
, void *ebp
)
179 __asm__
__volatile__ ("pushl %%ebp; pushl %3; movl %2,%%ebp; call *%%eax; popl %%ebp; popl %%ebp"
181 : "0" (func
), "r" (ebp
), "r" (arg
)
182 : "ecx", "edx", "memory" );
186 static inline int call_unwind_func( int (*func
)(void), void *ebp
)
189 __asm__
__volatile__ ("pushl %%ebp\n\t"
200 : "0" (func
), "r" (ebp
)
201 : "ecx", "edx", "memory" );
205 static inline void dump_type( const cxx_type_info
*type
)
207 TRACE( "flags %x type %p %s offsets %d,%d,%d size %d copy ctor %p\n",
208 type
->flags
, type
->type_info
, dbgstr_type_info(type
->type_info
),
209 type
->offsets
.this_offset
, type
->offsets
.vbase_descr
, type
->offsets
.vbase_offset
,
210 type
->size
, type
->copy_ctor
);
213 static void dump_exception_type( const cxx_exception_type
*type
)
217 TRACE( "flags %x destr %p handler %p type info %p\n",
218 type
->flags
, type
->destructor
, type
->custom_handler
, type
->type_info_table
);
219 for (i
= 0; i
< type
->type_info_table
->count
; i
++)
222 dump_type( type
->type_info_table
->info
[i
] );
226 static void dump_function_descr( const cxx_function_descr
*descr
)
231 TRACE( "magic %x\n", descr
->magic
);
232 TRACE( "unwind table: %p %d\n", descr
->unwind_table
, descr
->unwind_count
);
233 for (i
= 0; i
< descr
->unwind_count
; i
++)
235 TRACE( " %d: prev %d func %p\n", i
,
236 descr
->unwind_table
[i
].prev
, descr
->unwind_table
[i
].handler
);
238 TRACE( "try table: %p %d\n", descr
->tryblock
, descr
->tryblock_count
);
239 for (i
= 0; i
< descr
->tryblock_count
; i
++)
241 TRACE( " %d: start %d end %d catchlevel %d catch %p %d\n", i
,
242 descr
->tryblock
[i
].start_level
, descr
->tryblock
[i
].end_level
,
243 descr
->tryblock
[i
].catch_level
, descr
->tryblock
[i
].catchblock
,
244 descr
->tryblock
[i
].catchblock_count
);
245 for (j
= 0; j
< descr
->tryblock
[i
].catchblock_count
; j
++)
247 const catchblock_info
*ptr
= &descr
->tryblock
[i
].catchblock
[j
];
248 TRACE( " %d: flags %x offset %d handler %p type %p %s\n",
249 j
, ptr
->flags
, ptr
->offset
, ptr
->handler
,
250 ptr
->type_info
, dbgstr_type_info( ptr
->type_info
) );
253 if (descr
->magic
<= CXX_FRAME_MAGIC_VC6
) return;
254 TRACE( "expect list: %p\n", descr
->expect_list
);
255 if (descr
->magic
<= CXX_FRAME_MAGIC_VC7
) return;
256 TRACE( "flags: %08x\n", descr
->flags
);
259 /* check if the exception type is caught by a given catch block, and return the type that matched */
260 static const cxx_type_info
*find_caught_type( cxx_exception_type
*exc_type
,
261 const type_info
*catch_ti
, UINT catch_flags
)
265 for (i
= 0; i
< exc_type
->type_info_table
->count
; i
++)
267 const cxx_type_info
*type
= exc_type
->type_info_table
->info
[i
];
269 if (!catch_ti
) return type
; /* catch(...) matches any type */
270 if (catch_ti
!= type
->type_info
)
272 if (strcmp( catch_ti
->mangled
, type
->type_info
->mangled
)) continue;
274 /* type is the same, now check the flags */
275 if ((exc_type
->flags
& TYPE_FLAG_CONST
) &&
276 !(catch_flags
& TYPE_FLAG_CONST
)) continue;
277 if ((exc_type
->flags
& TYPE_FLAG_VOLATILE
) &&
278 !(catch_flags
& TYPE_FLAG_VOLATILE
)) continue;
279 return type
; /* it matched */
285 /* copy the exception object where the catch block wants it */
286 static void copy_exception( void *object
, cxx_exception_frame
*frame
,
287 const catchblock_info
*catchblock
, const cxx_type_info
*type
)
291 if (!catchblock
->type_info
|| !catchblock
->type_info
->mangled
[0]) return;
292 if (!catchblock
->offset
) return;
293 dest_ptr
= (void **)((char *)&frame
->ebp
+ catchblock
->offset
);
295 if (catchblock
->flags
& TYPE_FLAG_REFERENCE
)
297 *dest_ptr
= get_this_pointer( &type
->offsets
, object
);
299 else if (type
->flags
& CLASS_IS_SIMPLE_TYPE
)
301 memmove( dest_ptr
, object
, type
->size
);
302 /* if it is a pointer, adjust it */
303 if (type
->size
== sizeof(void *)) *dest_ptr
= get_this_pointer( &type
->offsets
, *dest_ptr
);
305 else /* copy the object */
308 call_copy_ctor( type
->copy_ctor
, dest_ptr
, get_this_pointer(&type
->offsets
,object
),
309 (type
->flags
& CLASS_HAS_VIRTUAL_BASE_CLASS
) );
311 memmove( dest_ptr
, get_this_pointer(&type
->offsets
,object
), type
->size
);
315 /* unwind the local function up to a given trylevel */
316 static void cxx_local_unwind( cxx_exception_frame
* frame
, const cxx_function_descr
*descr
, int last_level
)
318 void (*handler
)(void);
319 int trylevel
= frame
->trylevel
;
321 while (trylevel
!= last_level
)
323 if (trylevel
< 0 || trylevel
>= descr
->unwind_count
)
325 ERR( "invalid trylevel %d\n", trylevel
);
328 handler
= descr
->unwind_table
[trylevel
].handler
;
331 TRACE( "calling unwind handler %p trylevel %d last %d ebp %p\n",
332 handler
, trylevel
, last_level
, &frame
->ebp
);
333 call_ebp_func( handler
, &frame
->ebp
);
335 trylevel
= descr
->unwind_table
[trylevel
].prev
;
337 frame
->trylevel
= last_level
;
340 /* exception frame for nested exceptions in catch block */
341 struct catch_func_nested_frame
343 EXCEPTION_REGISTRATION_RECORD frame
; /* standard exception frame */
344 cxx_exception_frame
*cxx_frame
; /* frame of parent exception */
345 const cxx_function_descr
*descr
; /* descriptor of parent exception */
346 int trylevel
; /* current try level */
347 cxx_frame_info frame_info
;
350 /* handler for exceptions happening while calling a catch function */
351 static DWORD
catch_function_nested_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
352 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
354 struct catch_func_nested_frame
*nested_frame
= (struct catch_func_nested_frame
*)frame
;
356 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
358 __CxxUnregisterExceptionObject(&nested_frame
->frame_info
, FALSE
);
359 return ExceptionContinueSearch
;
362 TRACE( "got nested exception in catch function\n" );
364 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
366 PEXCEPTION_RECORD prev_rec
= msvcrt_get_thread_data()->exc_record
;
368 if((rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0) ||
369 (prev_rec
->ExceptionCode
== CXX_EXCEPTION
&&
370 rec
->ExceptionInformation
[1] == prev_rec
->ExceptionInformation
[1] &&
371 rec
->ExceptionInformation
[2] == prev_rec
->ExceptionInformation
[2]))
373 /* exception was rethrown */
375 rec
->ExceptionFlags
&= ~EH_UNWINDING
;
377 TRACE("detect rethrow: exception code: %x\n", rec
->ExceptionCode
);
378 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
379 TRACE("re-propage: obj: %lx, type: %lx\n",
380 rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[2]);
385 TRACE("detect threw new exception in catch block\n");
389 return cxx_frame_handler( rec
, nested_frame
->cxx_frame
, context
,
390 NULL
, nested_frame
->descr
, &nested_frame
->frame
,
391 nested_frame
->trylevel
);
394 /* find and call the appropriate catch block for an exception */
395 /* returns the address to continue execution to after the catch block was called */
396 static inline void call_catch_block( PEXCEPTION_RECORD rec
, cxx_exception_frame
*frame
,
397 const cxx_function_descr
*descr
, int nested_trylevel
,
398 EXCEPTION_REGISTRATION_RECORD
*catch_frame
,
399 cxx_exception_type
*info
)
403 void *addr
, *object
= (void *)rec
->ExceptionInformation
[1];
404 struct catch_func_nested_frame nested_frame
;
405 int trylevel
= frame
->trylevel
;
406 DWORD save_esp
= ((DWORD
*)frame
)[-1];
409 for (i
= 0; i
< descr
->tryblock_count
; i
++)
411 const tryblock_info
*tryblock
= &descr
->tryblock
[i
];
413 /* only handle try blocks inside current catch block */
414 if (catch_frame
&& nested_trylevel
> tryblock
->start_level
) continue;
416 if (trylevel
< tryblock
->start_level
) continue;
417 if (trylevel
> tryblock
->end_level
) continue;
419 /* got a try block */
420 for (j
= 0; j
< tryblock
->catchblock_count
; j
++)
422 const catchblock_info
*catchblock
= &tryblock
->catchblock
[j
];
425 const cxx_type_info
*type
= find_caught_type( info
,
426 catchblock
->type_info
, catchblock
->flags
);
429 TRACE( "matched type %p in tryblock %d catchblock %d\n", type
, i
, j
);
431 /* copy the exception to its destination on the stack */
432 copy_exception( object
, frame
, catchblock
, type
);
436 /* no CXX_EXCEPTION only proceed with a catch(...) block*/
437 if(catchblock
->type_info
)
439 TRACE("found catch(...) block\n");
442 /* Add frame info here so exception is not freed inside RtlUnwind call */
443 _CreateFrameInfo(&nested_frame
.frame_info
.frame_info
,
444 (void*)rec
->ExceptionInformation
[1]);
446 /* unwind the stack */
447 RtlUnwind( catch_frame
? catch_frame
: &frame
->frame
, 0, rec
, 0 );
448 cxx_local_unwind( frame
, descr
, tryblock
->start_level
);
449 frame
->trylevel
= tryblock
->end_level
+ 1;
451 data
= msvcrt_get_thread_data();
452 nested_frame
.frame_info
.rec
= data
->exc_record
;
453 data
->exc_record
= rec
;
455 /* call the catch block */
456 TRACE( "calling catch block %p addr %p ebp %p\n",
457 catchblock
, catchblock
->handler
, &frame
->ebp
);
459 /* setup an exception block for nested exceptions */
460 nested_frame
.frame
.Handler
= catch_function_nested_handler
;
461 nested_frame
.cxx_frame
= frame
;
462 nested_frame
.descr
= descr
;
463 nested_frame
.trylevel
= nested_trylevel
+ 1;
465 __wine_push_frame( &nested_frame
.frame
);
466 addr
= call_ebp_func( catchblock
->handler
, &frame
->ebp
);
467 __wine_pop_frame( &nested_frame
.frame
);
469 ((DWORD
*)frame
)[-1] = save_esp
;
470 __CxxUnregisterExceptionObject(&nested_frame
.frame_info
, FALSE
);
471 TRACE( "done, continuing at %p\n", addr
);
473 continue_after_catch( frame
, addr
);
478 /*********************************************************************
479 * __CxxExceptionFilter (MSVCRT.@)
481 int CDECL
__CxxExceptionFilter( PEXCEPTION_POINTERS ptrs
,
482 const type_info
*ti
, int flags
, void **copy
)
484 const cxx_type_info
*type
;
485 PEXCEPTION_RECORD rec
;
487 TRACE( "%p %p %x %p\n", ptrs
, ti
, flags
, copy
);
489 if (!ptrs
) return EXCEPTION_CONTINUE_SEARCH
;
491 /* handle catch(...) */
492 if (!ti
) return EXCEPTION_EXECUTE_HANDLER
;
494 rec
= ptrs
->ExceptionRecord
;
495 if (rec
->ExceptionCode
!= CXX_EXCEPTION
|| rec
->NumberParameters
!= 3 ||
496 rec
->ExceptionInformation
[0] < CXX_FRAME_MAGIC_VC6
||
497 rec
->ExceptionInformation
[0] > CXX_FRAME_MAGIC_VC8
)
498 return EXCEPTION_CONTINUE_SEARCH
;
500 if (rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0)
502 rec
= msvcrt_get_thread_data()->exc_record
;
503 if (!rec
) return EXCEPTION_CONTINUE_SEARCH
;
506 type
= find_caught_type( (cxx_exception_type
*)rec
->ExceptionInformation
[2], ti
, flags
);
507 if (!type
) return EXCEPTION_CONTINUE_SEARCH
;
511 void *object
= (void *)rec
->ExceptionInformation
[1];
513 if (flags
& TYPE_FLAG_REFERENCE
)
515 *copy
= get_this_pointer( &type
->offsets
, object
);
517 else if (type
->flags
& CLASS_IS_SIMPLE_TYPE
)
519 memmove( copy
, object
, type
->size
);
520 /* if it is a pointer, adjust it */
521 if (type
->size
== sizeof(void*)) *copy
= get_this_pointer( &type
->offsets
, *copy
);
523 else /* copy the object */
526 call_copy_ctor( type
->copy_ctor
, copy
, get_this_pointer(&type
->offsets
,object
),
527 (type
->flags
& CLASS_HAS_VIRTUAL_BASE_CLASS
) );
529 memmove( copy
, get_this_pointer(&type
->offsets
,object
), type
->size
);
532 return EXCEPTION_EXECUTE_HANDLER
;
535 /*********************************************************************
538 * Implementation of __CxxFrameHandler.
540 DWORD CDECL
cxx_frame_handler( PEXCEPTION_RECORD rec
, cxx_exception_frame
* frame
,
541 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
,
542 const cxx_function_descr
*descr
,
543 EXCEPTION_REGISTRATION_RECORD
* nested_frame
,
544 int nested_trylevel
)
546 cxx_exception_type
*exc_type
;
548 if (descr
->magic
< CXX_FRAME_MAGIC_VC6
|| descr
->magic
> CXX_FRAME_MAGIC_VC8
)
550 ERR( "invalid frame magic %x\n", descr
->magic
);
551 return ExceptionContinueSearch
;
553 if (descr
->magic
>= CXX_FRAME_MAGIC_VC8
&&
554 (descr
->flags
& FUNC_DESCR_SYNCHRONOUS
) &&
555 (rec
->ExceptionCode
!= CXX_EXCEPTION
))
556 return ExceptionContinueSearch
; /* handle only c++ exceptions */
558 if (rec
->ExceptionFlags
& (EH_UNWINDING
|EH_EXIT_UNWIND
))
560 if (descr
->unwind_count
&& !nested_trylevel
) cxx_local_unwind( frame
, descr
, -1 );
561 return ExceptionContinueSearch
;
563 if (!descr
->tryblock_count
) return ExceptionContinueSearch
;
565 if(rec
->ExceptionCode
== CXX_EXCEPTION
&&
566 rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0)
568 *rec
= *msvcrt_get_thread_data()->exc_record
;
569 rec
->ExceptionFlags
&= ~EH_UNWINDING
;
571 TRACE("detect rethrow: exception code: %x\n", rec
->ExceptionCode
);
572 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
573 TRACE("re-propage: obj: %lx, type: %lx\n",
574 rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[2]);
578 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
580 exc_type
= (cxx_exception_type
*)rec
->ExceptionInformation
[2];
582 if (rec
->ExceptionInformation
[0] > CXX_FRAME_MAGIC_VC8
&&
583 exc_type
->custom_handler
)
585 return exc_type
->custom_handler( rec
, frame
, context
, dispatch
,
586 descr
, nested_trylevel
, nested_frame
, 0 );
591 TRACE("handling C++ exception rec %p frame %p trylevel %d descr %p nested_frame %p\n",
592 rec
, frame
, frame
->trylevel
, descr
, nested_frame
);
593 dump_exception_type( exc_type
);
594 dump_function_descr( descr
);
599 thread_data_t
*data
= msvcrt_get_thread_data();
602 TRACE("handling C exception code %x rec %p frame %p trylevel %d descr %p nested_frame %p\n",
603 rec
->ExceptionCode
, rec
, frame
, frame
->trylevel
, descr
, nested_frame
);
605 if (data
->se_translator
) {
606 EXCEPTION_POINTERS except_ptrs
;
608 except_ptrs
.ExceptionRecord
= rec
;
609 except_ptrs
.ContextRecord
= context
;
610 data
->se_translator(rec
->ExceptionCode
, &except_ptrs
);
614 call_catch_block( rec
, frame
, descr
, frame
->trylevel
, nested_frame
, exc_type
);
615 return ExceptionContinueSearch
;
619 /*********************************************************************
620 * __CxxFrameHandler (MSVCRT.@)
622 extern DWORD CDECL
__CxxFrameHandler( PEXCEPTION_RECORD rec
, EXCEPTION_REGISTRATION_RECORD
* frame
,
623 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
);
624 __ASM_GLOBAL_FUNC( __CxxFrameHandler
,
625 "pushl $0\n\t" /* nested_trylevel */
626 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
627 "pushl $0\n\t" /* nested_frame */
628 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
629 "pushl %eax\n\t" /* descr */
630 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
631 "pushl 28(%esp)\n\t" /* dispatch */
632 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
633 "pushl 28(%esp)\n\t" /* context */
634 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
635 "pushl 28(%esp)\n\t" /* frame */
636 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
637 "pushl 28(%esp)\n\t" /* rec */
638 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
639 "call " __ASM_NAME("cxx_frame_handler") "\n\t"
641 __ASM_CFI(".cfi_adjust_cfa_offset -28\n\t")
645 /*********************************************************************
646 * __CxxLongjmpUnwind (MSVCRT.@)
648 * Callback meant to be used as UnwindFunc for setjmp/longjmp.
650 void __stdcall
__CxxLongjmpUnwind( const struct MSVCRT___JUMP_BUFFER
*buf
)
652 cxx_exception_frame
*frame
= (cxx_exception_frame
*)buf
->Registration
;
653 const cxx_function_descr
*descr
= (const cxx_function_descr
*)buf
->UnwindData
[0];
655 TRACE( "unwinding frame %p descr %p trylevel %ld\n", frame
, descr
, buf
->TryLevel
);
656 cxx_local_unwind( frame
, descr
, buf
->TryLevel
);
659 /*********************************************************************
660 * __CppXcptFilter (MSVCRT.@)
662 int CDECL
__CppXcptFilter(NTSTATUS ex
, PEXCEPTION_POINTERS ptr
)
664 /* only filter c++ exceptions */
665 if (ex
!= CXX_EXCEPTION
) return EXCEPTION_CONTINUE_SEARCH
;
666 return _XcptFilter( ex
, ptr
);
669 /*********************************************************************
670 * __CxxDetectRethrow (MSVCRT.@)
672 BOOL CDECL
__CxxDetectRethrow(PEXCEPTION_POINTERS ptrs
)
674 PEXCEPTION_RECORD rec
;
679 rec
= ptrs
->ExceptionRecord
;
681 if (rec
->ExceptionCode
== CXX_EXCEPTION
&&
682 rec
->NumberParameters
== 3 &&
683 rec
->ExceptionInformation
[0] == CXX_FRAME_MAGIC_VC6
&&
684 rec
->ExceptionInformation
[2])
686 ptrs
->ExceptionRecord
= msvcrt_get_thread_data()->exc_record
;
689 return (msvcrt_get_thread_data()->exc_record
== rec
);
692 /*********************************************************************
693 * __CxxQueryExceptionSize (MSVCRT.@)
695 unsigned int CDECL
__CxxQueryExceptionSize(void)
697 return sizeof(cxx_exception_type
);
701 /*********************************************************************
702 * _EH_prolog (MSVCRT.@)
705 /* Provided for VC++ binary compatibility only */
706 __ASM_GLOBAL_FUNC(_EH_prolog
,
707 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") /* skip ret addr */
709 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
711 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
713 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
714 "movl %esp, %fs:0\n\t"
715 "movl 12(%esp), %eax\n\t"
716 "movl %ebp, 12(%esp)\n\t"
717 "leal 12(%esp), %ebp\n\t"
719 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
722 static const SCOPETABLE_V4
*get_scopetable_v4( MSVCRT_EXCEPTION_FRAME
*frame
, ULONG_PTR cookie
)
724 return (const SCOPETABLE_V4
*)((ULONG_PTR
)frame
->scopetable
^ cookie
);
727 static DWORD
MSVCRT_nested_handler(PEXCEPTION_RECORD rec
,
728 EXCEPTION_REGISTRATION_RECORD
* frame
,
730 EXCEPTION_REGISTRATION_RECORD
** dispatch
)
732 if (!(rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)))
733 return ExceptionContinueSearch
;
735 return ExceptionCollidedUnwind
;
738 static void msvcrt_local_unwind2(MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
, void *ebp
)
740 EXCEPTION_REGISTRATION_RECORD reg
;
742 TRACE("(%p,%d,%d)\n",frame
, frame
->trylevel
, trylevel
);
744 /* Register a handler in case of a nested exception */
745 reg
.Handler
= MSVCRT_nested_handler
;
746 reg
.Prev
= NtCurrentTeb()->Tib
.ExceptionList
;
747 __wine_push_frame(®
);
749 while (frame
->trylevel
!= TRYLEVEL_END
&& frame
->trylevel
!= trylevel
)
751 int level
= frame
->trylevel
;
752 frame
->trylevel
= frame
->scopetable
[level
].previousTryLevel
;
753 if (!frame
->scopetable
[level
].lpfnFilter
)
755 TRACE( "__try block cleanup level %d handler %p ebp %p\n",
756 level
, frame
->scopetable
[level
].lpfnHandler
, ebp
);
757 call_unwind_func( frame
->scopetable
[level
].lpfnHandler
, ebp
);
760 __wine_pop_frame(®
);
761 TRACE("unwound OK\n");
764 static void msvcrt_local_unwind4( ULONG
*cookie
, MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
, void *ebp
)
766 EXCEPTION_REGISTRATION_RECORD reg
;
767 const SCOPETABLE_V4
*scopetable
= get_scopetable_v4( frame
, *cookie
);
769 TRACE("(%p,%d,%d)\n",frame
, frame
->trylevel
, trylevel
);
771 /* Register a handler in case of a nested exception */
772 reg
.Handler
= MSVCRT_nested_handler
;
773 reg
.Prev
= NtCurrentTeb()->Tib
.ExceptionList
;
774 __wine_push_frame(®
);
776 while (frame
->trylevel
!= -2 && frame
->trylevel
!= trylevel
)
778 int level
= frame
->trylevel
;
779 frame
->trylevel
= scopetable
->entries
[level
].previousTryLevel
;
780 if (!scopetable
->entries
[level
].lpfnFilter
)
782 TRACE( "__try block cleanup level %d handler %p ebp %p\n",
783 level
, scopetable
->entries
[level
].lpfnHandler
, ebp
);
784 call_unwind_func( scopetable
->entries
[level
].lpfnHandler
, ebp
);
787 __wine_pop_frame(®
);
788 TRACE("unwound OK\n");
791 /*******************************************************************
792 * _local_unwind2 (MSVCRT.@)
794 void CDECL
_local_unwind2(MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
)
796 msvcrt_local_unwind2( frame
, trylevel
, &frame
->_ebp
);
799 /*******************************************************************
800 * _local_unwind4 (MSVCRT.@)
802 void CDECL
_local_unwind4( ULONG
*cookie
, MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
)
804 msvcrt_local_unwind4( cookie
, frame
, trylevel
, &frame
->_ebp
);
807 /*******************************************************************
808 * _global_unwind2 (MSVCRT.@)
810 void CDECL
_global_unwind2(EXCEPTION_REGISTRATION_RECORD
* frame
)
812 TRACE("(%p)\n",frame
);
813 RtlUnwind( frame
, 0, 0, 0 );
816 /*********************************************************************
817 * _except_handler2 (MSVCRT.@)
819 int CDECL
_except_handler2(PEXCEPTION_RECORD rec
,
820 EXCEPTION_REGISTRATION_RECORD
* frame
,
822 EXCEPTION_REGISTRATION_RECORD
** dispatcher
)
824 FIXME("exception %x flags=%x at %p handler=%p %p %p stub\n",
825 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
826 frame
->Handler
, context
, dispatcher
);
827 return ExceptionContinueSearch
;
830 /*********************************************************************
831 * _except_handler3 (MSVCRT.@)
833 int CDECL
_except_handler3(PEXCEPTION_RECORD rec
,
834 MSVCRT_EXCEPTION_FRAME
* frame
,
835 PCONTEXT context
, void* dispatcher
)
837 int retval
, trylevel
;
838 EXCEPTION_POINTERS exceptPtrs
;
839 PSCOPETABLE pScopeTable
;
841 TRACE("exception %x flags=%x at %p handler=%p %p %p semi-stub\n",
842 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
843 frame
->handler
, context
, dispatcher
);
845 __asm__
__volatile__ ("cld");
847 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
849 /* Unwinding the current frame */
850 msvcrt_local_unwind2(frame
, TRYLEVEL_END
, &frame
->_ebp
);
851 TRACE("unwound current frame, returning ExceptionContinueSearch\n");
852 return ExceptionContinueSearch
;
856 /* Hunting for handler */
857 exceptPtrs
.ExceptionRecord
= rec
;
858 exceptPtrs
.ContextRecord
= context
;
859 *((DWORD
*)frame
-1) = (DWORD
)&exceptPtrs
;
860 trylevel
= frame
->trylevel
;
861 pScopeTable
= frame
->scopetable
;
863 while (trylevel
!= TRYLEVEL_END
)
865 TRACE( "level %d prev %d filter %p\n", trylevel
, pScopeTable
[trylevel
].previousTryLevel
,
866 pScopeTable
[trylevel
].lpfnFilter
);
867 if (pScopeTable
[trylevel
].lpfnFilter
)
869 retval
= call_filter( pScopeTable
[trylevel
].lpfnFilter
, &exceptPtrs
, &frame
->_ebp
);
871 TRACE("filter returned %s\n", retval
== EXCEPTION_CONTINUE_EXECUTION
?
872 "CONTINUE_EXECUTION" : retval
== EXCEPTION_EXECUTE_HANDLER
?
873 "EXECUTE_HANDLER" : "CONTINUE_SEARCH");
875 if (retval
== EXCEPTION_CONTINUE_EXECUTION
)
876 return ExceptionContinueExecution
;
878 if (retval
== EXCEPTION_EXECUTE_HANDLER
)
880 /* Unwind all higher frames, this one will handle the exception */
881 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)frame
);
882 msvcrt_local_unwind2(frame
, trylevel
, &frame
->_ebp
);
884 /* Set our trylevel to the enclosing block, and call the __finally
885 * code, which won't return
887 frame
->trylevel
= pScopeTable
[trylevel
].previousTryLevel
;
888 TRACE("__finally block %p\n",pScopeTable
[trylevel
].lpfnHandler
);
889 call_finally_block(pScopeTable
[trylevel
].lpfnHandler
, &frame
->_ebp
);
890 ERR("Returned from __finally block - expect crash!\n");
893 trylevel
= pScopeTable
[trylevel
].previousTryLevel
;
896 TRACE("reached TRYLEVEL_END, returning ExceptionContinueSearch\n");
897 return ExceptionContinueSearch
;
900 /*********************************************************************
901 * _except_handler4_common (MSVCRT.@)
903 int CDECL
_except_handler4_common( ULONG
*cookie
, void (*check_cookie
)(void),
904 EXCEPTION_RECORD
*rec
, MSVCRT_EXCEPTION_FRAME
*frame
,
905 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
907 int retval
, trylevel
;
908 EXCEPTION_POINTERS exceptPtrs
;
909 const SCOPETABLE_V4
*scope_table
= get_scopetable_v4( frame
, *cookie
);
911 TRACE( "exception %x flags=%x at %p handler=%p %p %p cookie=%x scope table=%p cookies=%d/%x,%d/%x\n",
912 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
913 frame
->handler
, context
, dispatcher
, *cookie
, scope_table
,
914 scope_table
->gs_cookie_offset
, scope_table
->gs_cookie_xor
,
915 scope_table
->eh_cookie_offset
, scope_table
->eh_cookie_xor
);
917 /* FIXME: no cookie validation yet */
919 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
921 /* Unwinding the current frame */
922 msvcrt_local_unwind4( cookie
, frame
, -2, &frame
->_ebp
);
923 TRACE("unwound current frame, returning ExceptionContinueSearch\n");
924 return ExceptionContinueSearch
;
928 /* Hunting for handler */
929 exceptPtrs
.ExceptionRecord
= rec
;
930 exceptPtrs
.ContextRecord
= context
;
931 *((DWORD
*)frame
-1) = (DWORD
)&exceptPtrs
;
932 trylevel
= frame
->trylevel
;
934 while (trylevel
!= -2)
936 TRACE( "level %d prev %d filter %p\n", trylevel
,
937 scope_table
->entries
[trylevel
].previousTryLevel
,
938 scope_table
->entries
[trylevel
].lpfnFilter
);
939 if (scope_table
->entries
[trylevel
].lpfnFilter
)
941 retval
= call_filter( scope_table
->entries
[trylevel
].lpfnFilter
, &exceptPtrs
, &frame
->_ebp
);
943 TRACE("filter returned %s\n", retval
== EXCEPTION_CONTINUE_EXECUTION
?
944 "CONTINUE_EXECUTION" : retval
== EXCEPTION_EXECUTE_HANDLER
?
945 "EXECUTE_HANDLER" : "CONTINUE_SEARCH");
947 if (retval
== EXCEPTION_CONTINUE_EXECUTION
)
948 return ExceptionContinueExecution
;
950 if (retval
== EXCEPTION_EXECUTE_HANDLER
)
952 __DestructExceptionObject(rec
);
954 /* Unwind all higher frames, this one will handle the exception */
955 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)frame
);
956 msvcrt_local_unwind4( cookie
, frame
, trylevel
, &frame
->_ebp
);
958 /* Set our trylevel to the enclosing block, and call the __finally
959 * code, which won't return
961 frame
->trylevel
= scope_table
->entries
[trylevel
].previousTryLevel
;
962 TRACE("__finally block %p\n",scope_table
->entries
[trylevel
].lpfnHandler
);
963 call_finally_block(scope_table
->entries
[trylevel
].lpfnHandler
, &frame
->_ebp
);
964 ERR("Returned from __finally block - expect crash!\n");
967 trylevel
= scope_table
->entries
[trylevel
].previousTryLevel
;
970 TRACE("reached -2, returning ExceptionContinueSearch\n");
971 return ExceptionContinueSearch
;
976 * setjmp/longjmp implementation
979 #define MSVCRT_JMP_MAGIC 0x56433230 /* ID value for new jump structure */
980 typedef void (__stdcall
*MSVCRT_unwind_function
)(const struct MSVCRT___JUMP_BUFFER
*);
982 /* define an entrypoint for setjmp/setjmp3 that stores the registers in the jmp buf */
983 /* and then jumps to the C backend function */
984 #define DEFINE_SETJMP_ENTRYPOINT(name) \
985 __ASM_GLOBAL_FUNC( name, \
986 "movl 4(%esp),%ecx\n\t" /* jmp_buf */ \
987 "movl %ebp,0(%ecx)\n\t" /* jmp_buf.Ebp */ \
988 "movl %ebx,4(%ecx)\n\t" /* jmp_buf.Ebx */ \
989 "movl %edi,8(%ecx)\n\t" /* jmp_buf.Edi */ \
990 "movl %esi,12(%ecx)\n\t" /* jmp_buf.Esi */ \
991 "movl %esp,16(%ecx)\n\t" /* jmp_buf.Esp */ \
992 "movl 0(%esp),%eax\n\t" \
993 "movl %eax,20(%ecx)\n\t" /* jmp_buf.Eip */ \
994 "jmp " __ASM_NAME("__regs_") # name )
996 /* restore the registers from the jmp buf upon longjmp */
997 extern void DECLSPEC_NORETURN
longjmp_set_regs( struct MSVCRT___JUMP_BUFFER
*jmp
, int retval
);
998 __ASM_GLOBAL_FUNC( longjmp_set_regs
,
999 "movl 4(%esp),%ecx\n\t" /* jmp_buf */
1000 "movl 8(%esp),%eax\n\t" /* retval */
1001 "movl 0(%ecx),%ebp\n\t" /* jmp_buf.Ebp */
1002 "movl 4(%ecx),%ebx\n\t" /* jmp_buf.Ebx */
1003 "movl 8(%ecx),%edi\n\t" /* jmp_buf.Edi */
1004 "movl 12(%ecx),%esi\n\t" /* jmp_buf.Esi */
1005 "movl 16(%ecx),%esp\n\t" /* jmp_buf.Esp */
1006 "addl $4,%esp\n\t" /* get rid of return address */
1007 "jmp *20(%ecx)\n\t" /* jmp_buf.Eip */ )
1010 * The signatures of the setjmp/longjmp functions do not match that
1011 * declared in the setjmp header so they don't follow the regular naming
1012 * convention to avoid conflicts.
1015 /*******************************************************************
1016 * _setjmp (MSVCRT.@)
1018 DEFINE_SETJMP_ENTRYPOINT(MSVCRT__setjmp
)
1019 int CDECL
__regs_MSVCRT__setjmp(struct MSVCRT___JUMP_BUFFER
*jmp
)
1021 jmp
->Registration
= (unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1022 if (jmp
->Registration
== ~0UL)
1023 jmp
->TryLevel
= TRYLEVEL_END
;
1025 jmp
->TryLevel
= ((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
)->trylevel
;
1027 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
1028 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
);
1032 /*******************************************************************
1033 * _setjmp3 (MSVCRT.@)
1035 DEFINE_SETJMP_ENTRYPOINT( MSVCRT__setjmp3
)
1036 int CDECL
__regs_MSVCRT__setjmp3(struct MSVCRT___JUMP_BUFFER
*jmp
, int nb_args
, ...)
1038 jmp
->Cookie
= MSVCRT_JMP_MAGIC
;
1039 jmp
->UnwindFunc
= 0;
1040 jmp
->Registration
= (unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1041 if (jmp
->Registration
== ~0UL)
1043 jmp
->TryLevel
= TRYLEVEL_END
;
1050 va_start( args
, nb_args
);
1051 if (nb_args
> 0) jmp
->UnwindFunc
= va_arg( args
, unsigned long );
1052 if (nb_args
> 1) jmp
->TryLevel
= va_arg( args
, unsigned long );
1053 else jmp
->TryLevel
= ((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
)->trylevel
;
1054 for (i
= 0; i
< 6 && i
< nb_args
- 2; i
++)
1055 jmp
->UnwindData
[i
] = va_arg( args
, unsigned long );
1059 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
1060 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
);
1064 /*********************************************************************
1065 * longjmp (MSVCRT.@)
1067 void CDECL
MSVCRT_longjmp(struct MSVCRT___JUMP_BUFFER
*jmp
, int retval
)
1069 unsigned long cur_frame
= 0;
1071 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx retval=%08x\n",
1072 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
, retval
);
1074 cur_frame
=(unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1075 TRACE("cur_frame=%lx\n",cur_frame
);
1077 if (cur_frame
!= jmp
->Registration
)
1078 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)jmp
->Registration
);
1080 if (jmp
->Registration
)
1082 if (IsBadReadPtr(&jmp
->Cookie
, sizeof(long)) || jmp
->Cookie
!= MSVCRT_JMP_MAGIC
)
1084 msvcrt_local_unwind2((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
,
1085 jmp
->TryLevel
, (void *)jmp
->Ebp
);
1087 else if(jmp
->UnwindFunc
)
1089 MSVCRT_unwind_function unwind_func
;
1091 unwind_func
=(MSVCRT_unwind_function
)jmp
->UnwindFunc
;
1099 longjmp_set_regs( jmp
, retval
);
1102 /*********************************************************************
1103 * _seh_longjmp_unwind (MSVCRT.@)
1105 void __stdcall
_seh_longjmp_unwind(struct MSVCRT___JUMP_BUFFER
*jmp
)
1107 msvcrt_local_unwind2( (MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
, jmp
->TryLevel
, (void *)jmp
->Ebp
);
1110 /*********************************************************************
1111 * _seh_longjmp_unwind4 (MSVCRT.@)
1113 void __stdcall
_seh_longjmp_unwind4(struct MSVCRT___JUMP_BUFFER
*jmp
)
1115 msvcrt_local_unwind4( (ULONG
*)&jmp
->Cookie
, (MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
,
1116 jmp
->TryLevel
, (void *)jmp
->Ebp
);
1119 /*********************************************************************
1120 * _fpieee_flt (MSVCRT.@)
1122 int __cdecl
_fpieee_flt(ULONG exception_code
, EXCEPTION_POINTERS
*ep
,
1123 int (__cdecl
*handler
)(_FPIEEE_RECORD
*))
1125 FLOATING_SAVE_AREA
*ctx
= &ep
->ContextRecord
->FloatSave
;
1129 TRACE("(%x %p %p)\n", exception_code
, ep
, handler
);
1131 switch(exception_code
) {
1132 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1133 case STATUS_FLOAT_INEXACT_RESULT
:
1134 case STATUS_FLOAT_INVALID_OPERATION
:
1135 case STATUS_FLOAT_OVERFLOW
:
1136 case STATUS_FLOAT_UNDERFLOW
:
1139 return EXCEPTION_CONTINUE_SEARCH
;
1142 memset(&rec
, 0, sizeof(rec
));
1143 rec
.RoundingMode
= ctx
->ControlWord
>> 10;
1144 switch((ctx
->ControlWord
>> 8) & 0x3) {
1145 case 0: rec
.Precision
= 2; break;
1146 case 1: rec
.Precision
= 3; break;
1147 case 2: rec
.Precision
= 1; break;
1148 case 3: rec
.Precision
= 0; break;
1150 rec
.Status
.InvalidOperation
= ctx
->StatusWord
& 0x1;
1151 rec
.Status
.ZeroDivide
= ((ctx
->StatusWord
& 0x4) != 0);
1152 rec
.Status
.Overflow
= ((ctx
->StatusWord
& 0x8) != 0);
1153 rec
.Status
.Underflow
= ((ctx
->StatusWord
& 0x10) != 0);
1154 rec
.Status
.Inexact
= ((ctx
->StatusWord
& 0x20) != 0);
1155 rec
.Enable
.InvalidOperation
= ((ctx
->ControlWord
& 0x1) == 0);
1156 rec
.Enable
.ZeroDivide
= ((ctx
->ControlWord
& 0x4) == 0);
1157 rec
.Enable
.Overflow
= ((ctx
->ControlWord
& 0x8) == 0);
1158 rec
.Enable
.Underflow
= ((ctx
->ControlWord
& 0x10) == 0);
1159 rec
.Enable
.Inexact
= ((ctx
->ControlWord
& 0x20) == 0);
1160 rec
.Cause
.InvalidOperation
= rec
.Enable
.InvalidOperation
& rec
.Status
.InvalidOperation
;
1161 rec
.Cause
.ZeroDivide
= rec
.Enable
.ZeroDivide
& rec
.Status
.ZeroDivide
;
1162 rec
.Cause
.Overflow
= rec
.Enable
.Overflow
& rec
.Status
.Overflow
;
1163 rec
.Cause
.Underflow
= rec
.Enable
.Underflow
& rec
.Status
.Underflow
;
1164 rec
.Cause
.Inexact
= rec
.Enable
.Inexact
& rec
.Status
.Inexact
;
1166 TRACE("opcode: %x\n", *(ULONG
*)ep
->ContextRecord
->FloatSave
.ErrorOffset
);
1168 if(*(WORD
*)ctx
->ErrorOffset
== 0x35dc) { /* fdiv m64fp */
1169 if(exception_code
==STATUS_FLOAT_DIVIDE_BY_ZERO
|| exception_code
==STATUS_FLOAT_INVALID_OPERATION
) {
1170 rec
.Operand1
.OperandValid
= 1;
1171 rec
.Result
.OperandValid
= 0;
1173 rec
.Operand1
.OperandValid
= 0;
1174 rec
.Result
.OperandValid
= 1;
1176 rec
.Operand2
.OperandValid
= 1;
1177 rec
.Operation
= _FpCodeDivide
;
1178 rec
.Operand1
.Format
= _FpFormatFp80
;
1179 memcpy(&rec
.Operand1
.Value
.Fp80Value
, ctx
->RegisterArea
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1180 rec
.Operand2
.Format
= _FpFormatFp64
;
1181 rec
.Operand2
.Value
.Fp64Value
= *(double*)ctx
->DataOffset
;
1182 rec
.Result
.Format
= _FpFormatFp80
;
1183 memcpy(&rec
.Result
.Value
.Fp80Value
, ctx
->RegisterArea
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1185 ret
= handler(&rec
);
1187 if(ret
== EXCEPTION_CONTINUE_EXECUTION
)
1188 memcpy(ctx
->RegisterArea
, &rec
.Result
.Value
.Fp80Value
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1192 FIXME("unsupported opcode: %x\n", *(ULONG
*)ep
->ContextRecord
->FloatSave
.ErrorOffset
);
1193 return EXCEPTION_CONTINUE_SEARCH
;
1196 #endif /* __i386__ */