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 #define FUNC_DESCR_SYNCHRONOUS 1 /* synchronous exceptions only (built with /EHs) */
101 typedef struct _SCOPETABLE
103 int previousTryLevel
;
104 int (*lpfnFilter
)(PEXCEPTION_POINTERS
);
105 int (*lpfnHandler
)(void);
106 } SCOPETABLE
, *PSCOPETABLE
;
108 typedef struct _MSVCRT_EXCEPTION_FRAME
110 EXCEPTION_REGISTRATION_RECORD
*prev
;
111 void (*handler
)(PEXCEPTION_RECORD
, EXCEPTION_REGISTRATION_RECORD
*,
112 PCONTEXT
, PEXCEPTION_RECORD
);
113 PSCOPETABLE scopetable
;
116 PEXCEPTION_POINTERS xpointers
;
117 } MSVCRT_EXCEPTION_FRAME
;
121 int gs_cookie_offset
;
123 int eh_cookie_offset
;
125 SCOPETABLE entries
[1];
128 #define TRYLEVEL_END (-1) /* End of trylevel list */
130 DWORD CDECL
cxx_frame_handler( PEXCEPTION_RECORD rec
, cxx_exception_frame
* frame
,
131 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
,
132 const cxx_function_descr
*descr
,
133 EXCEPTION_REGISTRATION_RECORD
* nested_frame
, int nested_trylevel
);
135 /* call a function with a given ebp */
136 static inline void *call_ebp_func( void *func
, void *ebp
)
140 __asm__
__volatile__ ("pushl %%ebx\n\t"
146 : "=a" (ret
), "=S" (dummy
), "=D" (dummy
)
147 : "0" (func
), "1" (ebp
) : "ecx", "edx", "memory" );
151 /* call a copy constructor */
152 static inline void call_copy_ctor( void *func
, void *this, void *src
, int has_vbase
)
154 TRACE( "calling copy ctor %p object %p src %p\n", func
, this, src
);
156 /* in that case copy ctor takes an extra bool indicating whether to copy the base class */
157 __asm__
__volatile__("pushl $1; pushl %2; call *%0"
158 : : "r" (func
), "c" (this), "r" (src
) : "eax", "edx", "memory" );
160 __asm__
__volatile__("pushl %2; call *%0"
161 : : "r" (func
), "c" (this), "r" (src
) : "eax", "edx", "memory" );
164 /* continue execution to the specified address after exception is caught */
165 static inline void DECLSPEC_NORETURN
continue_after_catch( cxx_exception_frame
* frame
, void *addr
)
167 __asm__
__volatile__("movl -4(%0),%%esp; leal 12(%0),%%ebp; jmp *%1"
168 : : "r" (frame
), "a" (addr
) );
169 for (;;) ; /* unreached */
172 static inline void call_finally_block( void *code_block
, void *base_ptr
)
174 __asm__
__volatile__ ("movl %1,%%ebp; call *%%eax"
175 : : "a" (code_block
), "g" (base_ptr
));
178 static inline int call_filter( int (*func
)(PEXCEPTION_POINTERS
), void *arg
, void *ebp
)
181 __asm__
__volatile__ ("pushl %%ebp; pushl %3; movl %2,%%ebp; call *%%eax; popl %%ebp; popl %%ebp"
183 : "0" (func
), "r" (ebp
), "r" (arg
)
184 : "ecx", "edx", "memory" );
188 static inline int call_unwind_func( int (*func
)(void), void *ebp
)
191 __asm__
__volatile__ ("pushl %%ebp\n\t"
202 : "0" (func
), "r" (ebp
)
203 : "ecx", "edx", "memory" );
207 static inline void dump_type( const cxx_type_info
*type
)
209 TRACE( "flags %x type %p %s offsets %d,%d,%d size %d copy ctor %p\n",
210 type
->flags
, type
->type_info
, dbgstr_type_info(type
->type_info
),
211 type
->offsets
.this_offset
, type
->offsets
.vbase_descr
, type
->offsets
.vbase_offset
,
212 type
->size
, type
->copy_ctor
);
215 static void dump_exception_type( const cxx_exception_type
*type
)
219 TRACE( "flags %x destr %p handler %p type info %p\n",
220 type
->flags
, type
->destructor
, type
->custom_handler
, type
->type_info_table
);
221 for (i
= 0; i
< type
->type_info_table
->count
; i
++)
224 dump_type( type
->type_info_table
->info
[i
] );
228 static void dump_function_descr( const cxx_function_descr
*descr
)
233 TRACE( "magic %x\n", descr
->magic
);
234 TRACE( "unwind table: %p %d\n", descr
->unwind_table
, descr
->unwind_count
);
235 for (i
= 0; i
< descr
->unwind_count
; i
++)
237 TRACE( " %d: prev %d func %p\n", i
,
238 descr
->unwind_table
[i
].prev
, descr
->unwind_table
[i
].handler
);
240 TRACE( "try table: %p %d\n", descr
->tryblock
, descr
->tryblock_count
);
241 for (i
= 0; i
< descr
->tryblock_count
; i
++)
243 TRACE( " %d: start %d end %d catchlevel %d catch %p %d\n", i
,
244 descr
->tryblock
[i
].start_level
, descr
->tryblock
[i
].end_level
,
245 descr
->tryblock
[i
].catch_level
, descr
->tryblock
[i
].catchblock
,
246 descr
->tryblock
[i
].catchblock_count
);
247 for (j
= 0; j
< descr
->tryblock
[i
].catchblock_count
; j
++)
249 const catchblock_info
*ptr
= &descr
->tryblock
[i
].catchblock
[j
];
250 TRACE( " %d: flags %x offset %d handler %p type %p %s\n",
251 j
, ptr
->flags
, ptr
->offset
, ptr
->handler
,
252 ptr
->type_info
, dbgstr_type_info( ptr
->type_info
) );
255 if (descr
->magic
<= CXX_FRAME_MAGIC_VC6
) return;
256 TRACE( "expect list: %p\n", descr
->expect_list
);
257 if (descr
->magic
<= CXX_FRAME_MAGIC_VC7
) return;
258 TRACE( "flags: %08x\n", descr
->flags
);
261 /* check if the exception type is caught by a given catch block, and return the type that matched */
262 static const cxx_type_info
*find_caught_type( cxx_exception_type
*exc_type
,
263 const type_info
*catch_ti
, UINT catch_flags
)
267 for (i
= 0; i
< exc_type
->type_info_table
->count
; i
++)
269 const cxx_type_info
*type
= exc_type
->type_info_table
->info
[i
];
271 if (!catch_ti
) return type
; /* catch(...) matches any type */
272 if (catch_ti
!= type
->type_info
)
274 if (strcmp( catch_ti
->mangled
, type
->type_info
->mangled
)) continue;
276 /* type is the same, now check the flags */
277 if ((exc_type
->flags
& TYPE_FLAG_CONST
) &&
278 !(catch_flags
& TYPE_FLAG_CONST
)) continue;
279 if ((exc_type
->flags
& TYPE_FLAG_VOLATILE
) &&
280 !(catch_flags
& TYPE_FLAG_VOLATILE
)) continue;
281 return type
; /* it matched */
287 /* copy the exception object where the catch block wants it */
288 static void copy_exception( void *object
, cxx_exception_frame
*frame
,
289 const catchblock_info
*catchblock
, const cxx_type_info
*type
)
293 if (!catchblock
->type_info
|| !catchblock
->type_info
->mangled
[0]) return;
294 if (!catchblock
->offset
) return;
295 dest_ptr
= (void **)((char *)&frame
->ebp
+ catchblock
->offset
);
297 if (catchblock
->flags
& TYPE_FLAG_REFERENCE
)
299 *dest_ptr
= get_this_pointer( &type
->offsets
, object
);
301 else if (type
->flags
& CLASS_IS_SIMPLE_TYPE
)
303 memmove( dest_ptr
, object
, type
->size
);
304 /* if it is a pointer, adjust it */
305 if (type
->size
== sizeof(void *)) *dest_ptr
= get_this_pointer( &type
->offsets
, *dest_ptr
);
307 else /* copy the object */
310 call_copy_ctor( type
->copy_ctor
, dest_ptr
, get_this_pointer(&type
->offsets
,object
),
311 (type
->flags
& CLASS_HAS_VIRTUAL_BASE_CLASS
) );
313 memmove( dest_ptr
, get_this_pointer(&type
->offsets
,object
), type
->size
);
317 /* unwind the local function up to a given trylevel */
318 static void cxx_local_unwind( cxx_exception_frame
* frame
, const cxx_function_descr
*descr
, int last_level
)
320 void (*handler
)(void);
321 int trylevel
= frame
->trylevel
;
323 while (trylevel
!= last_level
)
325 if (trylevel
< 0 || trylevel
>= descr
->unwind_count
)
327 ERR( "invalid trylevel %d\n", trylevel
);
330 handler
= descr
->unwind_table
[trylevel
].handler
;
333 TRACE( "calling unwind handler %p trylevel %d last %d ebp %p\n",
334 handler
, trylevel
, last_level
, &frame
->ebp
);
335 call_ebp_func( handler
, &frame
->ebp
);
337 trylevel
= descr
->unwind_table
[trylevel
].prev
;
339 frame
->trylevel
= last_level
;
342 /* exception frame for nested exceptions in catch block */
343 struct catch_func_nested_frame
345 EXCEPTION_REGISTRATION_RECORD frame
; /* standard exception frame */
346 cxx_exception_frame
*cxx_frame
; /* frame of parent exception */
347 const cxx_function_descr
*descr
; /* descriptor of parent exception */
348 int trylevel
; /* current try level */
349 cxx_frame_info frame_info
;
352 /* handler for exceptions happening while calling a catch function */
353 static DWORD
catch_function_nested_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
354 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
356 struct catch_func_nested_frame
*nested_frame
= (struct catch_func_nested_frame
*)frame
;
358 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
360 __CxxUnregisterExceptionObject(&nested_frame
->frame_info
, FALSE
);
361 return ExceptionContinueSearch
;
364 TRACE( "got nested exception in catch function\n" );
366 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
368 PEXCEPTION_RECORD prev_rec
= msvcrt_get_thread_data()->exc_record
;
370 if((rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0) ||
371 (prev_rec
->ExceptionCode
== CXX_EXCEPTION
&&
372 rec
->ExceptionInformation
[1] == prev_rec
->ExceptionInformation
[1] &&
373 rec
->ExceptionInformation
[2] == prev_rec
->ExceptionInformation
[2]))
375 /* exception was rethrown */
377 rec
->ExceptionFlags
&= ~EH_UNWINDING
;
379 TRACE("detect rethrow: exception code: %x\n", rec
->ExceptionCode
);
380 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
381 TRACE("re-propage: obj: %lx, type: %lx\n",
382 rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[2]);
387 TRACE("detect threw new exception in catch block\n");
391 return cxx_frame_handler( rec
, nested_frame
->cxx_frame
, context
,
392 NULL
, nested_frame
->descr
, &nested_frame
->frame
,
393 nested_frame
->trylevel
);
396 /* find and call the appropriate catch block for an exception */
397 /* returns the address to continue execution to after the catch block was called */
398 static inline void call_catch_block( PEXCEPTION_RECORD rec
, cxx_exception_frame
*frame
,
399 const cxx_function_descr
*descr
, int nested_trylevel
,
400 EXCEPTION_REGISTRATION_RECORD
*catch_frame
,
401 cxx_exception_type
*info
)
405 void *addr
, *object
= (void *)rec
->ExceptionInformation
[1];
406 struct catch_func_nested_frame nested_frame
;
407 int trylevel
= frame
->trylevel
;
408 DWORD save_esp
= ((DWORD
*)frame
)[-1];
411 for (i
= 0; i
< descr
->tryblock_count
; i
++)
413 const tryblock_info
*tryblock
= &descr
->tryblock
[i
];
415 /* only handle try blocks inside current catch block */
416 if (catch_frame
&& nested_trylevel
> tryblock
->start_level
) continue;
418 if (trylevel
< tryblock
->start_level
) continue;
419 if (trylevel
> tryblock
->end_level
) continue;
421 /* got a try block */
422 for (j
= 0; j
< tryblock
->catchblock_count
; j
++)
424 const catchblock_info
*catchblock
= &tryblock
->catchblock
[j
];
427 const cxx_type_info
*type
= find_caught_type( info
,
428 catchblock
->type_info
, catchblock
->flags
);
431 TRACE( "matched type %p in tryblock %d catchblock %d\n", type
, i
, j
);
433 /* copy the exception to its destination on the stack */
434 copy_exception( object
, frame
, catchblock
, type
);
438 /* no CXX_EXCEPTION only proceed with a catch(...) block*/
439 if(catchblock
->type_info
)
441 TRACE("found catch(...) block\n");
444 /* Add frame info here so exception is not freed inside RtlUnwind call */
445 _CreateFrameInfo(&nested_frame
.frame_info
.frame_info
,
446 (void*)rec
->ExceptionInformation
[1]);
448 /* unwind the stack */
449 RtlUnwind( catch_frame
? catch_frame
: &frame
->frame
, 0, rec
, 0 );
450 cxx_local_unwind( frame
, descr
, tryblock
->start_level
);
451 frame
->trylevel
= tryblock
->end_level
+ 1;
453 data
= msvcrt_get_thread_data();
454 nested_frame
.frame_info
.rec
= data
->exc_record
;
455 data
->exc_record
= rec
;
457 /* call the catch block */
458 TRACE( "calling catch block %p addr %p ebp %p\n",
459 catchblock
, catchblock
->handler
, &frame
->ebp
);
461 /* setup an exception block for nested exceptions */
462 nested_frame
.frame
.Handler
= catch_function_nested_handler
;
463 nested_frame
.cxx_frame
= frame
;
464 nested_frame
.descr
= descr
;
465 nested_frame
.trylevel
= nested_trylevel
+ 1;
467 __wine_push_frame( &nested_frame
.frame
);
468 addr
= call_ebp_func( catchblock
->handler
, &frame
->ebp
);
469 __wine_pop_frame( &nested_frame
.frame
);
471 ((DWORD
*)frame
)[-1] = save_esp
;
472 __CxxUnregisterExceptionObject(&nested_frame
.frame_info
, FALSE
);
473 TRACE( "done, continuing at %p\n", addr
);
475 continue_after_catch( frame
, addr
);
480 /*********************************************************************
481 * __CxxExceptionFilter (MSVCRT.@)
483 int CDECL
__CxxExceptionFilter( PEXCEPTION_POINTERS ptrs
,
484 const type_info
*ti
, int flags
, void **copy
)
486 const cxx_type_info
*type
;
487 PEXCEPTION_RECORD rec
;
489 TRACE( "%p %p %x %p\n", ptrs
, ti
, flags
, copy
);
491 if (!ptrs
) return EXCEPTION_CONTINUE_SEARCH
;
493 /* handle catch(...) */
494 if (!ti
) return EXCEPTION_EXECUTE_HANDLER
;
496 rec
= ptrs
->ExceptionRecord
;
497 if (rec
->ExceptionCode
!= CXX_EXCEPTION
|| rec
->NumberParameters
!= 3 ||
498 rec
->ExceptionInformation
[0] < CXX_FRAME_MAGIC_VC6
||
499 rec
->ExceptionInformation
[0] > CXX_FRAME_MAGIC_VC8
)
500 return EXCEPTION_CONTINUE_SEARCH
;
502 if (rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0)
504 rec
= msvcrt_get_thread_data()->exc_record
;
505 if (!rec
) return EXCEPTION_CONTINUE_SEARCH
;
508 type
= find_caught_type( (cxx_exception_type
*)rec
->ExceptionInformation
[2], ti
, flags
);
509 if (!type
) return EXCEPTION_CONTINUE_SEARCH
;
513 void *object
= (void *)rec
->ExceptionInformation
[1];
515 if (flags
& TYPE_FLAG_REFERENCE
)
517 *copy
= get_this_pointer( &type
->offsets
, object
);
519 else if (type
->flags
& CLASS_IS_SIMPLE_TYPE
)
521 memmove( copy
, object
, type
->size
);
522 /* if it is a pointer, adjust it */
523 if (type
->size
== sizeof(void*)) *copy
= get_this_pointer( &type
->offsets
, *copy
);
525 else /* copy the object */
528 call_copy_ctor( type
->copy_ctor
, copy
, get_this_pointer(&type
->offsets
,object
),
529 (type
->flags
& CLASS_HAS_VIRTUAL_BASE_CLASS
) );
531 memmove( copy
, get_this_pointer(&type
->offsets
,object
), type
->size
);
534 return EXCEPTION_EXECUTE_HANDLER
;
537 /*********************************************************************
540 * Implementation of __CxxFrameHandler.
542 DWORD CDECL
cxx_frame_handler( PEXCEPTION_RECORD rec
, cxx_exception_frame
* frame
,
543 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
,
544 const cxx_function_descr
*descr
,
545 EXCEPTION_REGISTRATION_RECORD
* nested_frame
,
546 int nested_trylevel
)
548 cxx_exception_type
*exc_type
;
550 if (descr
->magic
< CXX_FRAME_MAGIC_VC6
|| descr
->magic
> CXX_FRAME_MAGIC_VC8
)
552 ERR( "invalid frame magic %x\n", descr
->magic
);
553 return ExceptionContinueSearch
;
555 if (descr
->magic
>= CXX_FRAME_MAGIC_VC8
&&
556 (descr
->flags
& FUNC_DESCR_SYNCHRONOUS
) &&
557 (rec
->ExceptionCode
!= CXX_EXCEPTION
))
558 return ExceptionContinueSearch
; /* handle only c++ exceptions */
560 if (rec
->ExceptionFlags
& (EH_UNWINDING
|EH_EXIT_UNWIND
))
562 if (descr
->unwind_count
&& !nested_trylevel
) cxx_local_unwind( frame
, descr
, -1 );
563 return ExceptionContinueSearch
;
565 if (!descr
->tryblock_count
) return ExceptionContinueSearch
;
567 if(rec
->ExceptionCode
== CXX_EXCEPTION
&&
568 rec
->ExceptionInformation
[1] == 0 && rec
->ExceptionInformation
[2] == 0)
570 *rec
= *msvcrt_get_thread_data()->exc_record
;
571 rec
->ExceptionFlags
&= ~EH_UNWINDING
;
573 TRACE("detect rethrow: exception code: %x\n", rec
->ExceptionCode
);
574 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
575 TRACE("re-propage: obj: %lx, type: %lx\n",
576 rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[2]);
580 if(rec
->ExceptionCode
== CXX_EXCEPTION
)
582 exc_type
= (cxx_exception_type
*)rec
->ExceptionInformation
[2];
584 if (rec
->ExceptionInformation
[0] > CXX_FRAME_MAGIC_VC8
&&
585 exc_type
->custom_handler
)
587 return exc_type
->custom_handler( rec
, frame
, context
, dispatch
,
588 descr
, nested_trylevel
, nested_frame
, 0 );
593 TRACE("handling C++ exception rec %p frame %p trylevel %d descr %p nested_frame %p\n",
594 rec
, frame
, frame
->trylevel
, descr
, nested_frame
);
595 dump_exception_type( exc_type
);
596 dump_function_descr( descr
);
601 thread_data_t
*data
= msvcrt_get_thread_data();
604 TRACE("handling C exception code %x rec %p frame %p trylevel %d descr %p nested_frame %p\n",
605 rec
->ExceptionCode
, rec
, frame
, frame
->trylevel
, descr
, nested_frame
);
607 if (data
->se_translator
) {
608 EXCEPTION_POINTERS except_ptrs
;
610 except_ptrs
.ExceptionRecord
= rec
;
611 except_ptrs
.ContextRecord
= context
;
612 data
->se_translator(rec
->ExceptionCode
, &except_ptrs
);
616 call_catch_block( rec
, frame
, descr
, frame
->trylevel
, nested_frame
, exc_type
);
617 return ExceptionContinueSearch
;
621 /*********************************************************************
622 * __CxxFrameHandler (MSVCRT.@)
624 extern DWORD CDECL
__CxxFrameHandler( PEXCEPTION_RECORD rec
, EXCEPTION_REGISTRATION_RECORD
* frame
,
625 PCONTEXT context
, EXCEPTION_REGISTRATION_RECORD
** dispatch
);
626 __ASM_GLOBAL_FUNC( __CxxFrameHandler
,
627 "pushl $0\n\t" /* nested_trylevel */
628 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
629 "pushl $0\n\t" /* nested_frame */
630 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
631 "pushl %eax\n\t" /* descr */
632 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
633 "pushl 28(%esp)\n\t" /* dispatch */
634 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
635 "pushl 28(%esp)\n\t" /* context */
636 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
637 "pushl 28(%esp)\n\t" /* frame */
638 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
639 "pushl 28(%esp)\n\t" /* rec */
640 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
641 "call " __ASM_NAME("cxx_frame_handler") "\n\t"
643 __ASM_CFI(".cfi_adjust_cfa_offset -28\n\t")
647 /*********************************************************************
648 * __CxxLongjmpUnwind (MSVCRT.@)
650 * Callback meant to be used as UnwindFunc for setjmp/longjmp.
652 void __stdcall
__CxxLongjmpUnwind( const struct MSVCRT___JUMP_BUFFER
*buf
)
654 cxx_exception_frame
*frame
= (cxx_exception_frame
*)buf
->Registration
;
655 const cxx_function_descr
*descr
= (const cxx_function_descr
*)buf
->UnwindData
[0];
657 TRACE( "unwinding frame %p descr %p trylevel %ld\n", frame
, descr
, buf
->TryLevel
);
658 cxx_local_unwind( frame
, descr
, buf
->TryLevel
);
661 /*********************************************************************
662 * __CppXcptFilter (MSVCRT.@)
664 int CDECL
__CppXcptFilter(NTSTATUS ex
, PEXCEPTION_POINTERS ptr
)
666 /* only filter c++ exceptions */
667 if (ex
!= CXX_EXCEPTION
) return EXCEPTION_CONTINUE_SEARCH
;
668 return _XcptFilter( ex
, ptr
);
671 /*********************************************************************
672 * __CxxDetectRethrow (MSVCRT.@)
674 BOOL CDECL
__CxxDetectRethrow(PEXCEPTION_POINTERS ptrs
)
676 PEXCEPTION_RECORD rec
;
681 rec
= ptrs
->ExceptionRecord
;
683 if (rec
->ExceptionCode
== CXX_EXCEPTION
&&
684 rec
->NumberParameters
== 3 &&
685 rec
->ExceptionInformation
[0] == CXX_FRAME_MAGIC_VC6
&&
686 rec
->ExceptionInformation
[2])
688 ptrs
->ExceptionRecord
= msvcrt_get_thread_data()->exc_record
;
691 return (msvcrt_get_thread_data()->exc_record
== rec
);
694 /*********************************************************************
695 * __CxxQueryExceptionSize (MSVCRT.@)
697 unsigned int CDECL
__CxxQueryExceptionSize(void)
699 return sizeof(cxx_exception_type
);
703 /*********************************************************************
704 * _EH_prolog (MSVCRT.@)
707 /* Provided for VC++ binary compatibility only */
708 __ASM_GLOBAL_FUNC(_EH_prolog
,
709 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") /* skip ret addr */
711 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
713 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
715 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
716 "movl %esp, %fs:0\n\t"
717 "movl 12(%esp), %eax\n\t"
718 "movl %ebp, 12(%esp)\n\t"
719 "leal 12(%esp), %ebp\n\t"
721 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
724 static const SCOPETABLE_V4
*get_scopetable_v4( MSVCRT_EXCEPTION_FRAME
*frame
, ULONG_PTR cookie
)
726 return (const SCOPETABLE_V4
*)((ULONG_PTR
)frame
->scopetable
^ cookie
);
729 static DWORD
MSVCRT_nested_handler(PEXCEPTION_RECORD rec
,
730 EXCEPTION_REGISTRATION_RECORD
* frame
,
732 EXCEPTION_REGISTRATION_RECORD
** dispatch
)
734 if (!(rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)))
735 return ExceptionContinueSearch
;
737 return ExceptionCollidedUnwind
;
740 static void msvcrt_local_unwind2(MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
, void *ebp
)
742 EXCEPTION_REGISTRATION_RECORD reg
;
744 TRACE("(%p,%d,%d)\n",frame
, frame
->trylevel
, trylevel
);
746 /* Register a handler in case of a nested exception */
747 reg
.Handler
= MSVCRT_nested_handler
;
748 reg
.Prev
= NtCurrentTeb()->Tib
.ExceptionList
;
749 __wine_push_frame(®
);
751 while (frame
->trylevel
!= TRYLEVEL_END
&& frame
->trylevel
!= trylevel
)
753 int level
= frame
->trylevel
;
754 frame
->trylevel
= frame
->scopetable
[level
].previousTryLevel
;
755 if (!frame
->scopetable
[level
].lpfnFilter
)
757 TRACE( "__try block cleanup level %d handler %p ebp %p\n",
758 level
, frame
->scopetable
[level
].lpfnHandler
, ebp
);
759 call_unwind_func( frame
->scopetable
[level
].lpfnHandler
, ebp
);
762 __wine_pop_frame(®
);
763 TRACE("unwound OK\n");
766 static void msvcrt_local_unwind4( ULONG
*cookie
, MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
, void *ebp
)
768 EXCEPTION_REGISTRATION_RECORD reg
;
769 const SCOPETABLE_V4
*scopetable
= get_scopetable_v4( frame
, *cookie
);
771 TRACE("(%p,%d,%d)\n",frame
, frame
->trylevel
, trylevel
);
773 /* Register a handler in case of a nested exception */
774 reg
.Handler
= MSVCRT_nested_handler
;
775 reg
.Prev
= NtCurrentTeb()->Tib
.ExceptionList
;
776 __wine_push_frame(®
);
778 while (frame
->trylevel
!= -2 && frame
->trylevel
!= trylevel
)
780 int level
= frame
->trylevel
;
781 frame
->trylevel
= scopetable
->entries
[level
].previousTryLevel
;
782 if (!scopetable
->entries
[level
].lpfnFilter
)
784 TRACE( "__try block cleanup level %d handler %p ebp %p\n",
785 level
, scopetable
->entries
[level
].lpfnHandler
, ebp
);
786 call_unwind_func( scopetable
->entries
[level
].lpfnHandler
, ebp
);
789 __wine_pop_frame(®
);
790 TRACE("unwound OK\n");
793 /*******************************************************************
794 * _local_unwind2 (MSVCRT.@)
796 void CDECL
_local_unwind2(MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
)
798 msvcrt_local_unwind2( frame
, trylevel
, &frame
->_ebp
);
801 /*******************************************************************
802 * _local_unwind4 (MSVCRT.@)
804 void CDECL
_local_unwind4( ULONG
*cookie
, MSVCRT_EXCEPTION_FRAME
* frame
, int trylevel
)
806 msvcrt_local_unwind4( cookie
, frame
, trylevel
, &frame
->_ebp
);
809 /*******************************************************************
810 * _global_unwind2 (MSVCRT.@)
812 void CDECL
_global_unwind2(EXCEPTION_REGISTRATION_RECORD
* frame
)
814 TRACE("(%p)\n",frame
);
815 RtlUnwind( frame
, 0, 0, 0 );
818 /*********************************************************************
819 * _except_handler2 (MSVCRT.@)
821 int CDECL
_except_handler2(PEXCEPTION_RECORD rec
,
822 EXCEPTION_REGISTRATION_RECORD
* frame
,
824 EXCEPTION_REGISTRATION_RECORD
** dispatcher
)
826 FIXME("exception %x flags=%x at %p handler=%p %p %p stub\n",
827 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
828 frame
->Handler
, context
, dispatcher
);
829 return ExceptionContinueSearch
;
832 /*********************************************************************
833 * _except_handler3 (MSVCRT.@)
835 int CDECL
_except_handler3(PEXCEPTION_RECORD rec
,
836 MSVCRT_EXCEPTION_FRAME
* frame
,
837 PCONTEXT context
, void* dispatcher
)
839 int retval
, trylevel
;
840 EXCEPTION_POINTERS exceptPtrs
;
841 PSCOPETABLE pScopeTable
;
843 TRACE("exception %x flags=%x at %p handler=%p %p %p semi-stub\n",
844 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
845 frame
->handler
, context
, dispatcher
);
847 __asm__
__volatile__ ("cld");
849 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
851 /* Unwinding the current frame */
852 msvcrt_local_unwind2(frame
, TRYLEVEL_END
, &frame
->_ebp
);
853 TRACE("unwound current frame, returning ExceptionContinueSearch\n");
854 return ExceptionContinueSearch
;
858 /* Hunting for handler */
859 exceptPtrs
.ExceptionRecord
= rec
;
860 exceptPtrs
.ContextRecord
= context
;
861 *((DWORD
*)frame
-1) = (DWORD
)&exceptPtrs
;
862 trylevel
= frame
->trylevel
;
863 pScopeTable
= frame
->scopetable
;
865 while (trylevel
!= TRYLEVEL_END
)
867 TRACE( "level %d prev %d filter %p\n", trylevel
, pScopeTable
[trylevel
].previousTryLevel
,
868 pScopeTable
[trylevel
].lpfnFilter
);
869 if (pScopeTable
[trylevel
].lpfnFilter
)
871 retval
= call_filter( pScopeTable
[trylevel
].lpfnFilter
, &exceptPtrs
, &frame
->_ebp
);
873 TRACE("filter returned %s\n", retval
== EXCEPTION_CONTINUE_EXECUTION
?
874 "CONTINUE_EXECUTION" : retval
== EXCEPTION_EXECUTE_HANDLER
?
875 "EXECUTE_HANDLER" : "CONTINUE_SEARCH");
877 if (retval
== EXCEPTION_CONTINUE_EXECUTION
)
878 return ExceptionContinueExecution
;
880 if (retval
== EXCEPTION_EXECUTE_HANDLER
)
882 /* Unwind all higher frames, this one will handle the exception */
883 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)frame
);
884 msvcrt_local_unwind2(frame
, trylevel
, &frame
->_ebp
);
886 /* Set our trylevel to the enclosing block, and call the __finally
887 * code, which won't return
889 frame
->trylevel
= pScopeTable
[trylevel
].previousTryLevel
;
890 TRACE("__finally block %p\n",pScopeTable
[trylevel
].lpfnHandler
);
891 call_finally_block(pScopeTable
[trylevel
].lpfnHandler
, &frame
->_ebp
);
892 ERR("Returned from __finally block - expect crash!\n");
895 trylevel
= pScopeTable
[trylevel
].previousTryLevel
;
898 TRACE("reached TRYLEVEL_END, returning ExceptionContinueSearch\n");
899 return ExceptionContinueSearch
;
902 /*********************************************************************
903 * _except_handler4_common (MSVCRT.@)
905 int CDECL
_except_handler4_common( ULONG
*cookie
, void (*check_cookie
)(void),
906 EXCEPTION_RECORD
*rec
, MSVCRT_EXCEPTION_FRAME
*frame
,
907 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
909 int retval
, trylevel
;
910 EXCEPTION_POINTERS exceptPtrs
;
911 const SCOPETABLE_V4
*scope_table
= get_scopetable_v4( frame
, *cookie
);
913 TRACE( "exception %x flags=%x at %p handler=%p %p %p cookie=%x scope table=%p cookies=%d/%x,%d/%x\n",
914 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
,
915 frame
->handler
, context
, dispatcher
, *cookie
, scope_table
,
916 scope_table
->gs_cookie_offset
, scope_table
->gs_cookie_xor
,
917 scope_table
->eh_cookie_offset
, scope_table
->eh_cookie_xor
);
919 /* FIXME: no cookie validation yet */
921 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
923 /* Unwinding the current frame */
924 msvcrt_local_unwind4( cookie
, frame
, -2, &frame
->_ebp
);
925 TRACE("unwound current frame, returning ExceptionContinueSearch\n");
926 return ExceptionContinueSearch
;
930 /* Hunting for handler */
931 exceptPtrs
.ExceptionRecord
= rec
;
932 exceptPtrs
.ContextRecord
= context
;
933 *((DWORD
*)frame
-1) = (DWORD
)&exceptPtrs
;
934 trylevel
= frame
->trylevel
;
936 while (trylevel
!= -2)
938 TRACE( "level %d prev %d filter %p\n", trylevel
,
939 scope_table
->entries
[trylevel
].previousTryLevel
,
940 scope_table
->entries
[trylevel
].lpfnFilter
);
941 if (scope_table
->entries
[trylevel
].lpfnFilter
)
943 retval
= call_filter( scope_table
->entries
[trylevel
].lpfnFilter
, &exceptPtrs
, &frame
->_ebp
);
945 TRACE("filter returned %s\n", retval
== EXCEPTION_CONTINUE_EXECUTION
?
946 "CONTINUE_EXECUTION" : retval
== EXCEPTION_EXECUTE_HANDLER
?
947 "EXECUTE_HANDLER" : "CONTINUE_SEARCH");
949 if (retval
== EXCEPTION_CONTINUE_EXECUTION
)
950 return ExceptionContinueExecution
;
952 if (retval
== EXCEPTION_EXECUTE_HANDLER
)
954 __DestructExceptionObject(rec
);
956 /* Unwind all higher frames, this one will handle the exception */
957 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)frame
);
958 msvcrt_local_unwind4( cookie
, frame
, trylevel
, &frame
->_ebp
);
960 /* Set our trylevel to the enclosing block, and call the __finally
961 * code, which won't return
963 frame
->trylevel
= scope_table
->entries
[trylevel
].previousTryLevel
;
964 TRACE("__finally block %p\n",scope_table
->entries
[trylevel
].lpfnHandler
);
965 call_finally_block(scope_table
->entries
[trylevel
].lpfnHandler
, &frame
->_ebp
);
966 ERR("Returned from __finally block - expect crash!\n");
969 trylevel
= scope_table
->entries
[trylevel
].previousTryLevel
;
972 TRACE("reached -2, returning ExceptionContinueSearch\n");
973 return ExceptionContinueSearch
;
978 * setjmp/longjmp implementation
981 #define MSVCRT_JMP_MAGIC 0x56433230 /* ID value for new jump structure */
982 typedef void (__stdcall
*MSVCRT_unwind_function
)(const struct MSVCRT___JUMP_BUFFER
*);
984 /* define an entrypoint for setjmp/setjmp3 that stores the registers in the jmp buf */
985 /* and then jumps to the C backend function */
986 #define DEFINE_SETJMP_ENTRYPOINT(name) \
987 __ASM_GLOBAL_FUNC( name, \
988 "movl 4(%esp),%ecx\n\t" /* jmp_buf */ \
989 "movl %ebp,0(%ecx)\n\t" /* jmp_buf.Ebp */ \
990 "movl %ebx,4(%ecx)\n\t" /* jmp_buf.Ebx */ \
991 "movl %edi,8(%ecx)\n\t" /* jmp_buf.Edi */ \
992 "movl %esi,12(%ecx)\n\t" /* jmp_buf.Esi */ \
993 "movl %esp,16(%ecx)\n\t" /* jmp_buf.Esp */ \
994 "movl 0(%esp),%eax\n\t" \
995 "movl %eax,20(%ecx)\n\t" /* jmp_buf.Eip */ \
996 "jmp " __ASM_NAME("__regs_") # name )
998 /* restore the registers from the jmp buf upon longjmp */
999 extern void DECLSPEC_NORETURN
longjmp_set_regs( struct MSVCRT___JUMP_BUFFER
*jmp
, int retval
);
1000 __ASM_GLOBAL_FUNC( longjmp_set_regs
,
1001 "movl 4(%esp),%ecx\n\t" /* jmp_buf */
1002 "movl 8(%esp),%eax\n\t" /* retval */
1003 "movl 0(%ecx),%ebp\n\t" /* jmp_buf.Ebp */
1004 "movl 4(%ecx),%ebx\n\t" /* jmp_buf.Ebx */
1005 "movl 8(%ecx),%edi\n\t" /* jmp_buf.Edi */
1006 "movl 12(%ecx),%esi\n\t" /* jmp_buf.Esi */
1007 "movl 16(%ecx),%esp\n\t" /* jmp_buf.Esp */
1008 "addl $4,%esp\n\t" /* get rid of return address */
1009 "jmp *20(%ecx)\n\t" /* jmp_buf.Eip */ )
1012 * The signatures of the setjmp/longjmp functions do not match that
1013 * declared in the setjmp header so they don't follow the regular naming
1014 * convention to avoid conflicts.
1017 /*******************************************************************
1018 * _setjmp (MSVCRT.@)
1020 DEFINE_SETJMP_ENTRYPOINT(MSVCRT__setjmp
)
1021 int CDECL
__regs_MSVCRT__setjmp(struct MSVCRT___JUMP_BUFFER
*jmp
)
1023 jmp
->Registration
= (unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1024 if (jmp
->Registration
== ~0UL)
1025 jmp
->TryLevel
= TRYLEVEL_END
;
1027 jmp
->TryLevel
= ((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
)->trylevel
;
1029 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
1030 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
);
1034 /*******************************************************************
1035 * _setjmp3 (MSVCRT.@)
1037 DEFINE_SETJMP_ENTRYPOINT( MSVCRT__setjmp3
)
1038 int CDECL
__regs_MSVCRT__setjmp3(struct MSVCRT___JUMP_BUFFER
*jmp
, int nb_args
, ...)
1040 jmp
->Cookie
= MSVCRT_JMP_MAGIC
;
1041 jmp
->UnwindFunc
= 0;
1042 jmp
->Registration
= (unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1043 if (jmp
->Registration
== ~0UL)
1045 jmp
->TryLevel
= TRYLEVEL_END
;
1052 va_start( args
, nb_args
);
1053 if (nb_args
> 0) jmp
->UnwindFunc
= va_arg( args
, unsigned long );
1054 if (nb_args
> 1) jmp
->TryLevel
= va_arg( args
, unsigned long );
1055 else jmp
->TryLevel
= ((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
)->trylevel
;
1056 for (i
= 0; i
< 6 && i
< nb_args
- 2; i
++)
1057 jmp
->UnwindData
[i
] = va_arg( args
, unsigned long );
1061 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx\n",
1062 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
);
1066 /*********************************************************************
1067 * longjmp (MSVCRT.@)
1069 void CDECL
MSVCRT_longjmp(struct MSVCRT___JUMP_BUFFER
*jmp
, int retval
)
1071 unsigned long cur_frame
= 0;
1073 TRACE("buf=%p ebx=%08lx esi=%08lx edi=%08lx ebp=%08lx esp=%08lx eip=%08lx frame=%08lx retval=%08x\n",
1074 jmp
, jmp
->Ebx
, jmp
->Esi
, jmp
->Edi
, jmp
->Ebp
, jmp
->Esp
, jmp
->Eip
, jmp
->Registration
, retval
);
1076 cur_frame
=(unsigned long)NtCurrentTeb()->Tib
.ExceptionList
;
1077 TRACE("cur_frame=%lx\n",cur_frame
);
1079 if (cur_frame
!= jmp
->Registration
)
1080 _global_unwind2((EXCEPTION_REGISTRATION_RECORD
*)jmp
->Registration
);
1082 if (jmp
->Registration
)
1084 if (IsBadReadPtr(&jmp
->Cookie
, sizeof(long)) || jmp
->Cookie
!= MSVCRT_JMP_MAGIC
)
1086 msvcrt_local_unwind2((MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
,
1087 jmp
->TryLevel
, (void *)jmp
->Ebp
);
1089 else if(jmp
->UnwindFunc
)
1091 MSVCRT_unwind_function unwind_func
;
1093 unwind_func
=(MSVCRT_unwind_function
)jmp
->UnwindFunc
;
1101 longjmp_set_regs( jmp
, retval
);
1104 /*********************************************************************
1105 * _seh_longjmp_unwind (MSVCRT.@)
1107 void __stdcall
_seh_longjmp_unwind(struct MSVCRT___JUMP_BUFFER
*jmp
)
1109 msvcrt_local_unwind2( (MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
, jmp
->TryLevel
, (void *)jmp
->Ebp
);
1112 /*********************************************************************
1113 * _seh_longjmp_unwind4 (MSVCRT.@)
1115 void __stdcall
_seh_longjmp_unwind4(struct MSVCRT___JUMP_BUFFER
*jmp
)
1117 msvcrt_local_unwind4( (ULONG
*)&jmp
->Cookie
, (MSVCRT_EXCEPTION_FRAME
*)jmp
->Registration
,
1118 jmp
->TryLevel
, (void *)jmp
->Ebp
);
1121 /*********************************************************************
1122 * _fpieee_flt (MSVCRT.@)
1124 int __cdecl
_fpieee_flt(ULONG exception_code
, EXCEPTION_POINTERS
*ep
,
1125 int (__cdecl
*handler
)(_FPIEEE_RECORD
*))
1127 FLOATING_SAVE_AREA
*ctx
= &ep
->ContextRecord
->FloatSave
;
1131 TRACE("(%x %p %p)\n", exception_code
, ep
, handler
);
1133 switch(exception_code
) {
1134 case STATUS_FLOAT_DIVIDE_BY_ZERO
:
1135 case STATUS_FLOAT_INEXACT_RESULT
:
1136 case STATUS_FLOAT_INVALID_OPERATION
:
1137 case STATUS_FLOAT_OVERFLOW
:
1138 case STATUS_FLOAT_UNDERFLOW
:
1141 return EXCEPTION_CONTINUE_SEARCH
;
1144 memset(&rec
, 0, sizeof(rec
));
1145 rec
.RoundingMode
= ctx
->ControlWord
>> 10;
1146 switch((ctx
->ControlWord
>> 8) & 0x3) {
1147 case 0: rec
.Precision
= 2; break;
1148 case 1: rec
.Precision
= 3; break;
1149 case 2: rec
.Precision
= 1; break;
1150 case 3: rec
.Precision
= 0; break;
1152 rec
.Status
.InvalidOperation
= ctx
->StatusWord
& 0x1;
1153 rec
.Status
.ZeroDivide
= ((ctx
->StatusWord
& 0x4) != 0);
1154 rec
.Status
.Overflow
= ((ctx
->StatusWord
& 0x8) != 0);
1155 rec
.Status
.Underflow
= ((ctx
->StatusWord
& 0x10) != 0);
1156 rec
.Status
.Inexact
= ((ctx
->StatusWord
& 0x20) != 0);
1157 rec
.Enable
.InvalidOperation
= ((ctx
->ControlWord
& 0x1) == 0);
1158 rec
.Enable
.ZeroDivide
= ((ctx
->ControlWord
& 0x4) == 0);
1159 rec
.Enable
.Overflow
= ((ctx
->ControlWord
& 0x8) == 0);
1160 rec
.Enable
.Underflow
= ((ctx
->ControlWord
& 0x10) == 0);
1161 rec
.Enable
.Inexact
= ((ctx
->ControlWord
& 0x20) == 0);
1162 rec
.Cause
.InvalidOperation
= rec
.Enable
.InvalidOperation
& rec
.Status
.InvalidOperation
;
1163 rec
.Cause
.ZeroDivide
= rec
.Enable
.ZeroDivide
& rec
.Status
.ZeroDivide
;
1164 rec
.Cause
.Overflow
= rec
.Enable
.Overflow
& rec
.Status
.Overflow
;
1165 rec
.Cause
.Underflow
= rec
.Enable
.Underflow
& rec
.Status
.Underflow
;
1166 rec
.Cause
.Inexact
= rec
.Enable
.Inexact
& rec
.Status
.Inexact
;
1168 TRACE("opcode: %x\n", *(ULONG
*)ep
->ContextRecord
->FloatSave
.ErrorOffset
);
1170 if(*(WORD
*)ctx
->ErrorOffset
== 0x35dc) { /* fdiv m64fp */
1171 if(exception_code
==STATUS_FLOAT_DIVIDE_BY_ZERO
|| exception_code
==STATUS_FLOAT_INVALID_OPERATION
) {
1172 rec
.Operand1
.OperandValid
= 1;
1173 rec
.Result
.OperandValid
= 0;
1175 rec
.Operand1
.OperandValid
= 0;
1176 rec
.Result
.OperandValid
= 1;
1178 rec
.Operand2
.OperandValid
= 1;
1179 rec
.Operation
= _FpCodeDivide
;
1180 rec
.Operand1
.Format
= _FpFormatFp80
;
1181 memcpy(&rec
.Operand1
.Value
.Fp80Value
, ctx
->RegisterArea
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1182 rec
.Operand2
.Format
= _FpFormatFp64
;
1183 rec
.Operand2
.Value
.Fp64Value
= *(double*)ctx
->DataOffset
;
1184 rec
.Result
.Format
= _FpFormatFp80
;
1185 memcpy(&rec
.Result
.Value
.Fp80Value
, ctx
->RegisterArea
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1187 ret
= handler(&rec
);
1189 if(ret
== EXCEPTION_CONTINUE_EXECUTION
)
1190 memcpy(ctx
->RegisterArea
, &rec
.Result
.Value
.Fp80Value
, sizeof(rec
.Operand1
.Value
.Fp80Value
));
1194 FIXME("unsupported opcode: %x\n", *(ULONG
*)ep
->ContextRecord
->FloatSave
.ErrorOffset
);
1195 return EXCEPTION_CONTINUE_SEARCH
;
1198 #endif /* __i386__ */