2 * ARM64 signal handling routines
4 * Copyright 2010-2013 André Hentschel
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
30 #define WIN32_NO_STATUS
33 #include "wine/exception.h"
34 #include "ntdll_misc.h"
35 #include "wine/debug.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(seh
);
39 WINE_DECLARE_DEBUG_CHANNEL(threadname
);
41 TEB
* (* WINAPI __wine_current_teb
)(void) = NULL
;
43 typedef struct _SCOPE_TABLE
53 } SCOPE_TABLE
, *PSCOPE_TABLE
;
56 /* layering violation: the setjmp buffer is defined in msvcrt, but used by RtlUnwindEx */
57 struct MSVCRT_JUMP_BUFFER
59 unsigned __int64 Frame
;
60 unsigned __int64 Reserved
;
80 static void dump_scope_table( ULONG64 base
, const SCOPE_TABLE
*table
)
84 TRACE( "scope table at %p\n", table
);
85 for (i
= 0; i
< table
->Count
; i
++)
86 TRACE( " %u: %I64x-%I64x handler %I64x target %I64x\n", i
,
87 base
+ table
->ScopeRecord
[i
].BeginAddress
,
88 base
+ table
->ScopeRecord
[i
].EndAddress
,
89 base
+ table
->ScopeRecord
[i
].HandlerAddress
,
90 base
+ table
->ScopeRecord
[i
].JumpTarget
);
93 /*******************************************************************
96 static inline BOOL
is_valid_frame( ULONG_PTR frame
)
98 if (frame
& 7) return FALSE
;
99 return ((void *)frame
>= NtCurrentTeb()->Tib
.StackLimit
&&
100 (void *)frame
<= NtCurrentTeb()->Tib
.StackBase
);
104 /**************************************************************************
107 * Supposed to touch all the stack pages, but we shouldn't need that.
109 __ASM_GLOBAL_FUNC( __chkstk
, "ret")
112 /***********************************************************************
113 * RtlCaptureContext (NTDLL.@)
115 __ASM_STDCALL_FUNC( RtlCaptureContext
, 8,
116 "str xzr, [x0, #0x8]\n\t" /* context->X0 */
117 "stp x1, x2, [x0, #0x10]\n\t" /* context->X1,X2 */
118 "stp x3, x4, [x0, #0x20]\n\t" /* context->X3,X4 */
119 "stp x5, x6, [x0, #0x30]\n\t" /* context->X5,X6 */
120 "stp x7, x8, [x0, #0x40]\n\t" /* context->X7,X8 */
121 "stp x9, x10, [x0, #0x50]\n\t" /* context->X9,X10 */
122 "stp x11, x12, [x0, #0x60]\n\t" /* context->X11,X12 */
123 "stp x13, x14, [x0, #0x70]\n\t" /* context->X13,X14 */
124 "stp x15, x16, [x0, #0x80]\n\t" /* context->X15,X16 */
125 "stp x17, x18, [x0, #0x90]\n\t" /* context->X17,X18 */
126 "stp x19, x20, [x0, #0xa0]\n\t" /* context->X19,X20 */
127 "stp x21, x22, [x0, #0xb0]\n\t" /* context->X21,X22 */
128 "stp x23, x24, [x0, #0xc0]\n\t" /* context->X23,X24 */
129 "stp x25, x26, [x0, #0xd0]\n\t" /* context->X25,X26 */
130 "stp x27, x28, [x0, #0xe0]\n\t" /* context->X27,X28 */
131 "stp x29, xzr, [x0, #0xf0]\n\t" /* context->Fp,Lr */
133 "stp x1, x30, [x0, #0x100]\n\t" /* context->Sp,Pc */
134 "stp q0, q1, [x0, #0x110]\n\t" /* context->V[0-1] */
135 "stp q2, q3, [x0, #0x130]\n\t" /* context->V[2-3] */
136 "stp q4, q5, [x0, #0x150]\n\t" /* context->V[4-5] */
137 "stp q6, q7, [x0, #0x170]\n\t" /* context->V[6-7] */
138 "stp q8, q9, [x0, #0x190]\n\t" /* context->V[8-9] */
139 "stp q10, q11, [x0, #0x1b0]\n\t" /* context->V[10-11] */
140 "stp q12, q13, [x0, #0x1d0]\n\t" /* context->V[12-13] */
141 "stp q14, q15, [x0, #0x1f0]\n\t" /* context->V[14-15] */
142 "stp q16, q17, [x0, #0x210]\n\t" /* context->V[16-17] */
143 "stp q18, q19, [x0, #0x230]\n\t" /* context->V[18-19] */
144 "stp q20, q21, [x0, #0x250]\n\t" /* context->V[20-21] */
145 "stp q22, q23, [x0, #0x270]\n\t" /* context->V[22-23] */
146 "stp q24, q25, [x0, #0x290]\n\t" /* context->V[24-25] */
147 "stp q26, q27, [x0, #0x2b0]\n\t" /* context->V[26-27] */
148 "stp q28, q29, [x0, #0x2d0]\n\t" /* context->V[28-29] */
149 "stp q30, q31, [x0, #0x2f0]\n\t" /* context->V[30-31] */
150 "mov w1, #0x400000\n\t" /* CONTEXT_ARM64 */
151 "movk w1, #0x7\n\t" /* CONTEXT_FULL */
152 "str w1, [x0]\n\t" /* context->ContextFlags */
154 "str w1, [x0, #0x4]\n\t" /* context->Cpsr */
156 "str w1, [x0, #0x310]\n\t" /* context->Fpcr */
158 "str w1, [x0, #0x314]\n\t" /* context->Fpsr */
162 /**********************************************************************
165 static NTSTATUS
virtual_unwind( ULONG type
, DISPATCHER_CONTEXT
*dispatch
, CONTEXT
*context
)
167 LDR_DATA_TABLE_ENTRY
*module
;
171 dispatch
->ImageBase
= 0;
172 dispatch
->ScopeIndex
= 0;
173 dispatch
->EstablisherFrame
= 0;
174 dispatch
->ControlPc
= context
->Pc
;
176 * TODO: CONTEXT_UNWOUND_TO_CALL should be cleared if unwound past a
179 dispatch
->ControlPcIsUnwound
= (context
->ContextFlags
& CONTEXT_UNWOUND_TO_CALL
) != 0;
180 pc
= context
->Pc
- (dispatch
->ControlPcIsUnwound
? 4 : 0);
182 /* first look for PE exception information */
184 if ((dispatch
->FunctionEntry
= lookup_function_info(pc
,
185 &dispatch
->ImageBase
, &module
)))
187 dispatch
->LanguageHandler
= RtlVirtualUnwind( type
, dispatch
->ImageBase
, pc
,
188 dispatch
->FunctionEntry
, context
,
189 &dispatch
->HandlerData
, &dispatch
->EstablisherFrame
,
191 return STATUS_SUCCESS
;
194 /* then look for host system exception information */
196 if (!module
|| (module
->Flags
& LDR_WINE_INTERNAL
))
198 struct unwind_builtin_dll_params params
= { type
, dispatch
, context
};
200 status
= WINE_UNIX_CALL( unix_unwind_builtin_dll
, ¶ms
);
201 if (status
!= STATUS_SUCCESS
) return status
;
203 if (dispatch
->EstablisherFrame
)
205 dispatch
->FunctionEntry
= NULL
;
206 if (dispatch
->LanguageHandler
&& !module
)
208 FIXME( "calling personality routine in system library not supported yet\n" );
209 dispatch
->LanguageHandler
= NULL
;
211 return STATUS_SUCCESS
;
216 status
= context
->Pc
!= context
->Lr
?
217 STATUS_SUCCESS
: STATUS_INVALID_DISPOSITION
;
218 WARN( "exception data not found in %s for %p, LR %p, status %lx\n",
219 debugstr_w(module
->BaseDllName
.Buffer
), (void*) context
->Pc
,
220 (void*) context
->Lr
, status
);
221 dispatch
->EstablisherFrame
= context
->Sp
;
222 dispatch
->LanguageHandler
= NULL
;
223 context
->Pc
= context
->Lr
;
224 context
->ContextFlags
|= CONTEXT_UNWOUND_TO_CALL
;
228 dispatch
->EstablisherFrame
= context
->Fp
;
229 dispatch
->LanguageHandler
= NULL
;
230 context
->Pc
= context
->Lr
;
231 context
->ContextFlags
|= CONTEXT_UNWOUND_TO_CALL
;
232 return STATUS_SUCCESS
;
236 struct unwind_exception_frame
238 EXCEPTION_REGISTRATION_RECORD frame
;
239 DISPATCHER_CONTEXT
*dispatch
;
242 /**********************************************************************
243 * unwind_exception_handler
245 * Handler for exceptions happening while calling an unwind handler.
247 static DWORD __cdecl
unwind_exception_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
248 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
250 struct unwind_exception_frame
*unwind_frame
= (struct unwind_exception_frame
*)frame
;
251 DISPATCHER_CONTEXT
*dispatch
= (DISPATCHER_CONTEXT
*)dispatcher
;
253 /* copy the original dispatcher into the current one, except for the TargetIp */
254 dispatch
->ControlPc
= unwind_frame
->dispatch
->ControlPc
;
255 dispatch
->ImageBase
= unwind_frame
->dispatch
->ImageBase
;
256 dispatch
->FunctionEntry
= unwind_frame
->dispatch
->FunctionEntry
;
257 dispatch
->EstablisherFrame
= unwind_frame
->dispatch
->EstablisherFrame
;
258 dispatch
->ContextRecord
= unwind_frame
->dispatch
->ContextRecord
;
259 dispatch
->LanguageHandler
= unwind_frame
->dispatch
->LanguageHandler
;
260 dispatch
->HandlerData
= unwind_frame
->dispatch
->HandlerData
;
261 dispatch
->HistoryTable
= unwind_frame
->dispatch
->HistoryTable
;
262 dispatch
->ScopeIndex
= unwind_frame
->dispatch
->ScopeIndex
;
263 TRACE( "detected collided unwind\n" );
264 return ExceptionCollidedUnwind
;
267 /**********************************************************************
268 * call_unwind_handler
270 * Call a single unwind handler.
272 static DWORD
call_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
)
274 struct unwind_exception_frame frame
;
277 frame
.frame
.Handler
= unwind_exception_handler
;
278 frame
.dispatch
= dispatch
;
279 __wine_push_frame( &frame
.frame
);
281 TRACE( "calling handler %p (rec=%p, frame=%I64x context=%p, dispatch=%p)\n",
282 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
283 res
= dispatch
->LanguageHandler( rec
, (void *)dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
284 TRACE( "handler %p returned %lx\n", dispatch
->LanguageHandler
, res
);
286 __wine_pop_frame( &frame
.frame
);
290 case ExceptionContinueSearch
:
291 case ExceptionCollidedUnwind
:
294 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
302 /**********************************************************************
303 * call_teb_unwind_handler
305 * Call a single unwind handler from the TEB chain.
307 static DWORD
call_teb_unwind_handler( EXCEPTION_RECORD
*rec
, DISPATCHER_CONTEXT
*dispatch
,
308 EXCEPTION_REGISTRATION_RECORD
*teb_frame
)
312 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
313 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, dispatch
);
314 res
= teb_frame
->Handler( rec
, teb_frame
, dispatch
->ContextRecord
, (EXCEPTION_REGISTRATION_RECORD
**)dispatch
);
315 TRACE( "handler at %p returned %lu\n", teb_frame
->Handler
, res
);
319 case ExceptionContinueSearch
:
320 case ExceptionCollidedUnwind
:
323 raise_status( STATUS_INVALID_DISPOSITION
, rec
);
331 static DWORD __cdecl
nested_exception_handler( EXCEPTION_RECORD
*rec
, EXCEPTION_REGISTRATION_RECORD
*frame
,
332 CONTEXT
*context
, EXCEPTION_REGISTRATION_RECORD
**dispatcher
)
334 if (!(rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
)))
335 rec
->ExceptionFlags
|= EH_NESTED_CALL
;
337 return ExceptionContinueSearch
;
341 /**********************************************************************
344 * Call a single exception handler.
345 * FIXME: Handle nested exceptions.
347 static DWORD
call_handler( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, DISPATCHER_CONTEXT
*dispatch
)
349 EXCEPTION_REGISTRATION_RECORD frame
;
352 frame
.Handler
= nested_exception_handler
;
353 __wine_push_frame( &frame
);
355 TRACE( "calling handler %p (rec=%p, frame=%I64x context=%p, dispatch=%p)\n",
356 dispatch
->LanguageHandler
, rec
, dispatch
->EstablisherFrame
, dispatch
->ContextRecord
, dispatch
);
357 res
= dispatch
->LanguageHandler( rec
, (void *)dispatch
->EstablisherFrame
, context
, dispatch
);
358 TRACE( "handler at %p returned %lu\n", dispatch
->LanguageHandler
, res
);
360 rec
->ExceptionFlags
&= EH_NONCONTINUABLE
;
361 __wine_pop_frame( &frame
);
366 /**********************************************************************
369 * Call a single exception handler from the TEB chain.
370 * FIXME: Handle nested exceptions.
372 static DWORD
call_teb_handler( EXCEPTION_RECORD
*rec
, CONTEXT
*context
, DISPATCHER_CONTEXT
*dispatch
,
373 EXCEPTION_REGISTRATION_RECORD
*teb_frame
)
377 TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
378 teb_frame
->Handler
, rec
, teb_frame
, dispatch
->ContextRecord
, dispatch
);
379 res
= teb_frame
->Handler( rec
, teb_frame
, context
, (EXCEPTION_REGISTRATION_RECORD
**)dispatch
);
380 TRACE( "handler at %p returned %lu\n", teb_frame
->Handler
, res
);
385 /**********************************************************************
386 * call_function_handlers
388 * Call the per-function handlers.
390 static NTSTATUS
call_function_handlers( EXCEPTION_RECORD
*rec
, CONTEXT
*orig_context
)
392 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
393 UNWIND_HISTORY_TABLE table
;
394 DISPATCHER_CONTEXT dispatch
;
395 CONTEXT context
, prev_context
;
398 context
= *orig_context
;
399 dispatch
.TargetPc
= 0;
400 dispatch
.ContextRecord
= &context
;
401 dispatch
.HistoryTable
= &table
;
402 prev_context
= context
;
403 dispatch
.NonVolatileRegisters
= (BYTE
*)&prev_context
.X19
;
407 status
= virtual_unwind( UNW_FLAG_EHANDLER
, &dispatch
, &context
);
408 if (status
!= STATUS_SUCCESS
) return status
;
411 if (!dispatch
.EstablisherFrame
) break;
413 if (!is_valid_frame( dispatch
.EstablisherFrame
))
415 ERR( "invalid frame %I64x (%p-%p)\n", dispatch
.EstablisherFrame
,
416 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
417 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
421 if (dispatch
.LanguageHandler
)
423 switch (call_handler( rec
, orig_context
, &dispatch
))
425 case ExceptionContinueExecution
:
426 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
427 return STATUS_SUCCESS
;
428 case ExceptionContinueSearch
:
430 case ExceptionNestedException
:
431 FIXME( "nested exception\n" );
433 case ExceptionCollidedUnwind
: {
436 context
= *dispatch
.ContextRecord
;
437 dispatch
.ContextRecord
= &context
;
438 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
439 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
440 &context
, &dispatch
.HandlerData
, &frame
, NULL
);
444 return STATUS_INVALID_DISPOSITION
;
447 /* hack: call wine handlers registered in the tib list */
448 else while ((ULONG64
)teb_frame
< context
.Sp
)
450 TRACE( "found wine frame %p rsp %I64x handler %p\n",
451 teb_frame
, context
.Sp
, teb_frame
->Handler
);
452 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
453 switch (call_teb_handler( rec
, orig_context
, &dispatch
, teb_frame
))
455 case ExceptionContinueExecution
:
456 if (rec
->ExceptionFlags
& EH_NONCONTINUABLE
) return STATUS_NONCONTINUABLE_EXCEPTION
;
457 return STATUS_SUCCESS
;
458 case ExceptionContinueSearch
:
460 case ExceptionNestedException
:
461 FIXME( "nested exception\n" );
463 case ExceptionCollidedUnwind
: {
466 context
= *dispatch
.ContextRecord
;
467 dispatch
.ContextRecord
= &context
;
468 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
469 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
470 &context
, &dispatch
.HandlerData
, &frame
, NULL
);
471 teb_frame
= teb_frame
->Prev
;
475 return STATUS_INVALID_DISPOSITION
;
477 teb_frame
= teb_frame
->Prev
;
480 if (context
.Sp
== (ULONG64
)NtCurrentTeb()->Tib
.StackBase
) break;
481 prev_context
= context
;
483 return STATUS_UNHANDLED_EXCEPTION
;
487 /*******************************************************************
488 * KiUserExceptionDispatcher (NTDLL.@)
490 NTSTATUS WINAPI
KiUserExceptionDispatcher( EXCEPTION_RECORD
*rec
, CONTEXT
*context
)
495 if (pWow64PrepareForException
) pWow64PrepareForException( rec
, context
);
497 TRACE( "code=%lx flags=%lx addr=%p pc=%016I64x\n",
498 rec
->ExceptionCode
, rec
->ExceptionFlags
, rec
->ExceptionAddress
, context
->Pc
);
499 for (c
= 0; c
< rec
->NumberParameters
; c
++)
500 TRACE( " info[%ld]=%016I64x\n", c
, rec
->ExceptionInformation
[c
] );
502 if (rec
->ExceptionCode
== EXCEPTION_WINE_STUB
)
504 if (rec
->ExceptionInformation
[1] >> 16)
505 MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
506 rec
->ExceptionAddress
,
507 (char*)rec
->ExceptionInformation
[0], (char*)rec
->ExceptionInformation
[1] );
509 MESSAGE( "wine: Call from %p to unimplemented function %s.%Id, aborting\n",
510 rec
->ExceptionAddress
,
511 (char*)rec
->ExceptionInformation
[0], rec
->ExceptionInformation
[1] );
513 else if (rec
->ExceptionCode
== EXCEPTION_WINE_NAME_THREAD
&& rec
->ExceptionInformation
[0] == 0x1000)
515 if ((DWORD
)rec
->ExceptionInformation
[2] == -1 || (DWORD
)rec
->ExceptionInformation
[2] == GetCurrentThreadId())
516 WARN_(threadname
)( "Thread renamed to %s\n", debugstr_a((char *)rec
->ExceptionInformation
[1]) );
518 WARN_(threadname
)( "Thread ID %04lx renamed to %s\n", (DWORD
)rec
->ExceptionInformation
[2],
519 debugstr_a((char *)rec
->ExceptionInformation
[1]) );
521 set_native_thread_name((DWORD
)rec
->ExceptionInformation
[2], (char *)rec
->ExceptionInformation
[1]);
523 else if (rec
->ExceptionCode
== DBG_PRINTEXCEPTION_C
)
525 WARN( "%s\n", debugstr_an((char *)rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[0] - 1) );
527 else if (rec
->ExceptionCode
== DBG_PRINTEXCEPTION_WIDE_C
)
529 WARN( "%s\n", debugstr_wn((WCHAR
*)rec
->ExceptionInformation
[1], rec
->ExceptionInformation
[0] - 1) );
533 if (rec
->ExceptionCode
== STATUS_ASSERTION_FAILURE
)
534 ERR( "%s exception (code=%lx) raised\n", debugstr_exception_code(rec
->ExceptionCode
), rec
->ExceptionCode
);
536 WARN( "%s exception (code=%lx) raised\n", debugstr_exception_code(rec
->ExceptionCode
), rec
->ExceptionCode
);
538 TRACE(" x0=%016I64x x1=%016I64x x2=%016I64x x3=%016I64x\n",
539 context
->X0
, context
->X1
, context
->X2
, context
->X3
);
540 TRACE(" x4=%016I64x x5=%016I64x x6=%016I64x x7=%016I64x\n",
541 context
->X4
, context
->X5
, context
->X6
, context
->X7
);
542 TRACE(" x8=%016I64x x9=%016I64x x10=%016I64x x11=%016I64x\n",
543 context
->X8
, context
->X9
, context
->X10
, context
->X11
);
544 TRACE(" x12=%016I64x x13=%016I64x x14=%016I64x x15=%016I64x\n",
545 context
->X12
, context
->X13
, context
->X14
, context
->X15
);
546 TRACE(" x16=%016I64x x17=%016I64x x18=%016I64x x19=%016I64x\n",
547 context
->X16
, context
->X17
, context
->X18
, context
->X19
);
548 TRACE(" x20=%016I64x x21=%016I64x x22=%016I64x x23=%016I64x\n",
549 context
->X20
, context
->X21
, context
->X22
, context
->X23
);
550 TRACE(" x24=%016I64x x25=%016I64x x26=%016I64x x27=%016I64x\n",
551 context
->X24
, context
->X25
, context
->X26
, context
->X27
);
552 TRACE(" x28=%016I64x fp=%016I64x lr=%016I64x sp=%016I64x\n",
553 context
->X28
, context
->Fp
, context
->Lr
, context
->Sp
);
556 if (call_vectored_handlers( rec
, context
) == EXCEPTION_CONTINUE_EXECUTION
)
557 NtContinue( context
, FALSE
);
559 if ((status
= call_function_handlers( rec
, context
)) == STATUS_SUCCESS
)
560 NtContinue( context
, FALSE
);
562 if (status
!= STATUS_UNHANDLED_EXCEPTION
) RtlRaiseStatus( status
);
563 return NtRaiseException( rec
, context
, FALSE
);
567 /*******************************************************************
568 * KiUserApcDispatcher (NTDLL.@)
570 void WINAPI
KiUserApcDispatcher( CONTEXT
*context
, ULONG_PTR arg1
, ULONG_PTR arg2
, ULONG_PTR arg3
,
573 void (CALLBACK
*func
)(ULONG_PTR
,ULONG_PTR
,ULONG_PTR
,CONTEXT
*) = (void *)apc
;
574 func( arg1
, arg2
, arg3
, context
);
575 NtContinue( context
, TRUE
);
579 /*******************************************************************
580 * KiUserCallbackDispatcher (NTDLL.@)
582 void WINAPI
KiUserCallbackDispatcher( ULONG id
, void *args
, ULONG len
)
588 NTSTATUS (WINAPI
*func
)(void *, ULONG
) = ((void **)NtCurrentTeb()->Peb
->KernelCallbackTable
)[id
];
589 status
= NtCallbackReturn( NULL
, 0, func( args
, len
));
593 ERR_(seh
)( "ignoring exception\n" );
594 status
= NtCallbackReturn( 0, 0, 0 );
598 RtlRaiseStatus( status
);
602 /***********************************************************************
603 * Definitions for Win32 unwind tables
608 DWORD function_length
: 18;
616 struct unwind_info_ext
623 struct unwind_info_epilog
630 static const BYTE unwind_code_len
[256] =
632 /* 00 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
633 /* 20 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
634 /* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
635 /* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
636 /* 80 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
637 /* a0 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
638 /* c0 */ 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
639 /* e0 */ 4,1,2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
642 /***********************************************************************
645 static unsigned int get_sequence_len( BYTE
*ptr
, BYTE
*end
)
647 unsigned int ret
= 0;
651 if (*ptr
== 0xe4 || *ptr
== 0xe5) break;
652 ptr
+= unwind_code_len
[*ptr
];
659 /***********************************************************************
662 static void restore_regs( int reg
, int count
, int pos
, CONTEXT
*context
,
663 KNONVOLATILE_CONTEXT_POINTERS
*ptrs
)
665 int i
, offset
= max( 0, pos
);
666 for (i
= 0; i
< count
; i
++)
668 if (ptrs
&& reg
+ i
>= 19) (&ptrs
->X19
)[reg
+ i
- 19] = (DWORD64
*)context
->Sp
+ i
+ offset
;
669 context
->X
[reg
+ i
] = ((DWORD64
*)context
->Sp
)[i
+ offset
];
671 if (pos
< 0) context
->Sp
+= -8 * pos
;
675 /***********************************************************************
678 static void restore_fpregs( int reg
, int count
, int pos
, CONTEXT
*context
,
679 KNONVOLATILE_CONTEXT_POINTERS
*ptrs
)
681 int i
, offset
= max( 0, pos
);
682 for (i
= 0; i
< count
; i
++)
684 if (ptrs
&& reg
+ i
>= 8) (&ptrs
->D8
)[reg
+ i
- 8] = (DWORD64
*)context
->Sp
+ i
+ offset
;
685 context
->V
[reg
+ i
].D
[0] = ((double *)context
->Sp
)[i
+ offset
];
687 if (pos
< 0) context
->Sp
+= -8 * pos
;
691 static void do_pac_auth( CONTEXT
*context
)
693 register DWORD64 x17
__asm__( "x17" ) = context
->Lr
;
694 register DWORD64 x16
__asm__( "x16" ) = context
->Sp
;
696 /* This is the autib1716 instruction. The hint instruction is used here
697 * as gcc does not assemble autib1716 for pre armv8.3a targets. For
698 * pre-armv8.3a targets, this is just treated as a hint instruction, which
700 __asm__( "hint 0xe" : "+r"(x17
) : "r"(x16
) );
705 /***********************************************************************
706 * process_unwind_codes
708 static void process_unwind_codes( BYTE
*ptr
, BYTE
*end
, CONTEXT
*context
,
709 KNONVOLATILE_CONTEXT_POINTERS
*ptrs
, int skip
)
711 unsigned int val
, len
, save_next
= 2;
714 while (ptr
< end
&& skip
)
716 if (*ptr
== 0xe4 || *ptr
== 0xe5) break;
717 ptr
+= unwind_code_len
[*ptr
];
723 if ((len
= unwind_code_len
[*ptr
]) > 1)
725 if (ptr
+ len
> end
) break;
726 val
= ptr
[0] * 0x100 + ptr
[1];
730 if (*ptr
< 0x20) /* alloc_s */
731 context
->Sp
+= 16 * (val
& 0x1f);
732 else if (*ptr
< 0x40) /* save_r19r20_x */
733 restore_regs( 19, save_next
, -(val
& 0x1f), context
, ptrs
);
734 else if (*ptr
< 0x80) /* save_fplr */
735 restore_regs( 29, 2, val
& 0x3f, context
, ptrs
);
736 else if (*ptr
< 0xc0) /* save_fplr_x */
737 restore_regs( 29, 2, -(val
& 0x3f) - 1, context
, ptrs
);
738 else if (*ptr
< 0xc8) /* alloc_m */
739 context
->Sp
+= 16 * (val
& 0x7ff);
740 else if (*ptr
< 0xcc) /* save_regp */
741 restore_regs( 19 + ((val
>> 6) & 0xf), save_next
, val
& 0x3f, context
, ptrs
);
742 else if (*ptr
< 0xd0) /* save_regp_x */
743 restore_regs( 19 + ((val
>> 6) & 0xf), save_next
, -(val
& 0x3f) - 1, context
, ptrs
);
744 else if (*ptr
< 0xd4) /* save_reg */
745 restore_regs( 19 + ((val
>> 6) & 0xf), 1, val
& 0x3f, context
, ptrs
);
746 else if (*ptr
< 0xd6) /* save_reg_x */
747 restore_regs( 19 + ((val
>> 5) & 0xf), 1, -(val
& 0x1f) - 1, context
, ptrs
);
748 else if (*ptr
< 0xd8) /* save_lrpair */
750 restore_regs( 19 + 2 * ((val
>> 6) & 0x7), 1, val
& 0x3f, context
, ptrs
);
751 restore_regs( 30, 1, (val
& 0x3f) + 1, context
, ptrs
);
753 else if (*ptr
< 0xda) /* save_fregp */
754 restore_fpregs( 8 + ((val
>> 6) & 0x7), save_next
, val
& 0x3f, context
, ptrs
);
755 else if (*ptr
< 0xdc) /* save_fregp_x */
756 restore_fpregs( 8 + ((val
>> 6) & 0x7), save_next
, -(val
& 0x3f) - 1, context
, ptrs
);
757 else if (*ptr
< 0xde) /* save_freg */
758 restore_fpregs( 8 + ((val
>> 6) & 0x7), 1, val
& 0x3f, context
, ptrs
);
759 else if (*ptr
== 0xde) /* save_freg_x */
760 restore_fpregs( 8 + ((val
>> 5) & 0x7), 1, -(val
& 0x3f) - 1, context
, ptrs
);
761 else if (*ptr
== 0xe0) /* alloc_l */
762 context
->Sp
+= 16 * ((ptr
[1] << 16) + (ptr
[2] << 8) + ptr
[3]);
763 else if (*ptr
== 0xe1) /* set_fp */
764 context
->Sp
= context
->Fp
;
765 else if (*ptr
== 0xe2) /* add_fp */
766 context
->Sp
= context
->Fp
- 8 * (val
& 0xff);
767 else if (*ptr
== 0xe3) /* nop */
769 else if (*ptr
== 0xe4) /* end */
771 else if (*ptr
== 0xe5) /* end_c */
773 else if (*ptr
== 0xe6) /* save_next */
779 else if (*ptr
== 0xe9) /* MSFT_OP_MACHINE_FRAME */
781 context
->Pc
= ((DWORD64
*)context
->Sp
)[1];
782 context
->Sp
= ((DWORD64
*)context
->Sp
)[0];
784 else if (*ptr
== 0xea) /* MSFT_OP_CONTEXT */
786 memcpy( context
, (DWORD64
*)context
->Sp
, sizeof(CONTEXT
) );
788 else if (*ptr
== 0xfc) /* pac_sign_lr */
790 do_pac_auth( context
);
794 WARN( "unsupported code %02x\n", *ptr
);
803 /***********************************************************************
806 static void *unwind_packed_data( ULONG_PTR base
, ULONG_PTR pc
, RUNTIME_FUNCTION
*func
,
807 CONTEXT
*context
, KNONVOLATILE_CONTEXT_POINTERS
*ptrs
)
810 unsigned int len
, offset
, skip
= 0;
811 unsigned int int_size
= func
->RegI
* 8, fp_size
= func
->RegF
* 8, regsave
, local_size
;
812 unsigned int int_regs
, fp_regs
, saved_regs
, local_size_regs
;
814 TRACE( "function %I64x-%I64x: len=%#x flag=%x regF=%u regI=%u H=%u CR=%u frame=%x\n",
815 base
+ func
->BeginAddress
, base
+ func
->BeginAddress
+ func
->FunctionLength
* 4,
816 func
->FunctionLength
, func
->Flag
, func
->RegF
, func
->RegI
, func
->H
, func
->CR
, func
->FrameSize
);
818 if (func
->CR
== 1) int_size
+= 8;
819 if (func
->RegF
) fp_size
+= 8;
821 regsave
= ((int_size
+ fp_size
+ 8 * 8 * func
->H
) + 0xf) & ~0xf;
822 local_size
= func
->FrameSize
* 16 - regsave
;
824 int_regs
= int_size
/ 8;
825 fp_regs
= fp_size
/ 8;
826 saved_regs
= regsave
/ 8;
827 local_size_regs
= local_size
/ 8;
829 /* check for prolog/epilog */
832 offset
= ((pc
- base
) - func
->BeginAddress
) / 4;
833 if (offset
< 17 || offset
>= func
->FunctionLength
- 15)
835 len
= (int_size
+ 8) / 16 + (fp_size
+ 8) / 16;
842 len
++; /* mov x29,sp */
843 len
++; /* stp x29,lr,[sp,0] */
844 if (local_size
<= 512) break;
848 if (local_size
) len
++; /* sub sp,sp,#local_size */
849 if (local_size
> 4088) len
++; /* sub sp,sp,#4088 */
853 if (offset
< len
) /* prolog */
857 else if (offset
>= func
->FunctionLength
- (len
+ 1)) /* epilog */
859 skip
= offset
- (func
->FunctionLength
- (len
+ 1));
866 if (func
->CR
== 3 || func
->CR
== 2)
868 DWORD64
*fp
= (DWORD64
*) context
->Fp
; /* X[29] */
869 context
->Sp
= context
->Fp
;
870 context
->X
[29] = fp
[0];
871 context
->X
[30] = fp
[1];
873 context
->Sp
+= local_size
;
874 if (fp_size
) restore_fpregs( 8, fp_regs
, int_regs
, context
, ptrs
);
875 if (func
->CR
== 1) restore_regs( 30, 1, int_regs
- 1, context
, ptrs
);
876 restore_regs( 19, func
->RegI
, -saved_regs
, context
, ptrs
);
880 unsigned int pos
= 0;
887 if (pos
++ >= skip
) context
->Sp
= context
->Fp
;
888 if (local_size
<= 512)
890 /* stp x29,lr,[sp,-#local_size]! */
891 if (pos
++ >= skip
) restore_regs( 29, 2, -local_size_regs
, context
, ptrs
);
894 /* stp x29,lr,[sp,0] */
895 if (pos
++ >= skip
) restore_regs( 29, 2, 0, context
, ptrs
);
899 if (!local_size
) break;
900 /* sub sp,sp,#local_size */
901 if (pos
++ >= skip
) context
->Sp
+= (local_size
- 1) % 4088 + 1;
902 if (local_size
> 4088 && pos
++ >= skip
) context
->Sp
+= 4088;
906 if (func
->H
) pos
+= 4;
910 if (func
->RegF
% 2 == 0 && pos
++ >= skip
)
911 /* str d%u,[sp,#fp_size] */
912 restore_fpregs( 8 + func
->RegF
, 1, int_regs
+ fp_regs
- 1, context
, ptrs
);
913 for (i
= (func
->RegF
+ 1) / 2 - 1; i
>= 0; i
--)
915 if (pos
++ < skip
) continue;
917 /* stp d8,d9,[sp,-#regsave]! */
918 restore_fpregs( 8, 2, -saved_regs
, context
, ptrs
);
920 /* stp dn,dn+1,[sp,#offset] */
921 restore_fpregs( 8 + 2 * i
, 2, int_regs
+ 2 * i
, context
, ptrs
);
929 /* stp xn,lr,[sp,#offset] */
930 if (func
->CR
== 1) restore_regs( 30, 1, int_regs
- 1, context
, ptrs
);
931 /* str xn,[sp,#offset] */
932 restore_regs( 18 + func
->RegI
, 1,
933 (func
->RegI
> 1) ? func
->RegI
- 1 : -saved_regs
,
937 else if (func
->CR
== 1)
939 /* str lr,[sp,#offset] */
940 if (pos
++ >= skip
) restore_regs( 30, 1, func
->RegI
? int_regs
- 1 : -saved_regs
, context
, ptrs
);
943 for (i
= func
->RegI
/ 2 - 1; i
>= 0; i
--)
945 if (pos
++ < skip
) continue;
947 /* stp xn,xn+1,[sp,#offset] */
948 restore_regs( 19 + 2 * i
, 2, 2 * i
, context
, ptrs
);
950 /* stp x19,x20,[sp,-#regsave]! */
951 restore_regs( 19, 2, -saved_regs
, context
, ptrs
);
954 if (func
->CR
== 2) do_pac_auth( context
);
959 /***********************************************************************
962 static void *unwind_full_data( ULONG_PTR base
, ULONG_PTR pc
, RUNTIME_FUNCTION
*func
,
963 CONTEXT
*context
, PVOID
*handler_data
, KNONVOLATILE_CONTEXT_POINTERS
*ptrs
)
965 struct unwind_info
*info
;
966 struct unwind_info_epilog
*info_epilog
;
967 unsigned int i
, codes
, epilogs
, len
, offset
;
971 info
= (struct unwind_info
*)((char *)base
+ func
->UnwindData
);
973 epilogs
= info
->epilog
;
975 if (!codes
&& !epilogs
)
977 struct unwind_info_ext
*infoex
= data
;
978 codes
= infoex
->codes
;
979 epilogs
= infoex
->epilog
;
983 if (!info
->e
) data
= info_epilog
+ epilogs
;
985 offset
= ((pc
- base
) - func
->BeginAddress
) / 4;
986 end
= (BYTE
*)data
+ codes
* 4;
988 TRACE( "function %I64x-%I64x: len=%#x ver=%u X=%u E=%u epilogs=%u codes=%u\n",
989 base
+ func
->BeginAddress
, base
+ func
->BeginAddress
+ info
->function_length
* 4,
990 info
->function_length
, info
->version
, info
->x
, info
->e
, epilogs
, codes
* 4 );
992 /* check for prolog */
993 if (offset
< codes
* 4)
995 len
= get_sequence_len( data
, end
);
998 process_unwind_codes( data
, end
, context
, ptrs
, len
- offset
);
1003 /* check for epilog */
1006 for (i
= 0; i
< epilogs
; i
++)
1008 if (offset
< info_epilog
[i
].offset
) break;
1009 if (offset
- info_epilog
[i
].offset
< codes
* 4 - info_epilog
[i
].index
)
1011 BYTE
*ptr
= (BYTE
*)data
+ info_epilog
[i
].index
;
1012 len
= get_sequence_len( ptr
, end
);
1013 if (offset
<= info_epilog
[i
].offset
+ len
)
1015 process_unwind_codes( ptr
, end
, context
, ptrs
, offset
- info_epilog
[i
].offset
);
1021 else if (info
->function_length
- offset
<= codes
* 4 - epilogs
)
1023 BYTE
*ptr
= (BYTE
*)data
+ epilogs
;
1024 len
= get_sequence_len( ptr
, end
) + 1;
1025 if (offset
>= info
->function_length
- len
)
1027 process_unwind_codes( ptr
, end
, context
, ptrs
, offset
- (info
->function_length
- len
) );
1032 process_unwind_codes( data
, end
, context
, ptrs
, 0 );
1034 /* get handler since we are inside the main code */
1037 DWORD
*handler_rva
= (DWORD
*)data
+ codes
;
1038 *handler_data
= handler_rva
+ 1;
1039 return (char *)base
+ *handler_rva
;
1045 /**********************************************************************
1046 * RtlVirtualUnwind (NTDLL.@)
1048 PVOID WINAPI
RtlVirtualUnwind( ULONG type
, ULONG_PTR base
, ULONG_PTR pc
,
1049 RUNTIME_FUNCTION
*func
, CONTEXT
*context
,
1050 PVOID
*handler_data
, ULONG_PTR
*frame_ret
,
1051 KNONVOLATILE_CONTEXT_POINTERS
*ctx_ptr
)
1055 TRACE( "type %lx pc %I64x sp %I64x func %I64x\n", type
, pc
, context
->Sp
, base
+ func
->BeginAddress
);
1057 *handler_data
= NULL
;
1061 handler
= unwind_packed_data( base
, pc
, func
, context
, ctx_ptr
);
1063 handler
= unwind_full_data( base
, pc
, func
, context
, handler_data
, ctx_ptr
);
1065 TRACE( "ret: lr=%I64x sp=%I64x handler=%p\n", context
->Lr
, context
->Sp
, handler
);
1067 context
->Pc
= context
->Lr
;
1068 context
->ContextFlags
|= CONTEXT_UNWOUND_TO_CALL
;
1069 *frame_ret
= context
->Sp
;
1073 /**********************************************************************
1074 * call_consolidate_callback
1076 * Wrapper function to call a consolidate callback from a fake frame.
1077 * If the callback executes RtlUnwindEx (like for example done in C++ handlers),
1078 * we have to skip all frames which were already processed. To do that we
1079 * trick the unwinding functions into thinking the call came from somewhere
1080 * else. All CFI instructions are either DW_CFA_def_cfa_expression or
1081 * DW_CFA_expression, and the expressions have the following format:
1083 * DW_OP_breg31; sleb128 <OFFSET> | Load x31 + struct member offset
1084 * [DW_OP_deref] | Dereference, only for CFA
1086 extern void * WINAPI
call_consolidate_callback( CONTEXT
*context
,
1087 void *(CALLBACK
*callback
)(EXCEPTION_RECORD
*),
1088 EXCEPTION_RECORD
*rec
,
1090 __ASM_GLOBAL_FUNC( call_consolidate_callback
,
1091 "stp x29, x30, [sp, #-0x30]!\n\t"
1092 __ASM_CFI(".cfi_def_cfa_offset 48\n\t")
1093 __ASM_CFI(".cfi_offset 29, -48\n\t")
1094 __ASM_CFI(".cfi_offset 30, -40\n\t")
1095 __ASM_SEH(".seh_nop\n\t")
1096 "stp x1, x2, [sp, #0x10]\n\t"
1097 __ASM_SEH(".seh_nop\n\t")
1098 "str x3, [sp, #0x20]\n\t"
1099 __ASM_SEH(".seh_nop\n\t")
1101 __ASM_CFI(".cfi_def_cfa_register 29\n\t")
1102 __ASM_SEH(".seh_nop\n\t")
1103 __ASM_CFI(".cfi_remember_state\n\t")
1104 /* Memcpy the context onto the stack */
1105 "sub sp, sp, #0x390\n\t"
1106 __ASM_SEH(".seh_nop\n\t")
1108 __ASM_SEH(".seh_nop\n\t")
1110 __ASM_SEH(".seh_nop\n\t")
1111 "mov x2, #0x390\n\t"
1112 __ASM_SEH(".seh_nop\n\t")
1113 "bl " __ASM_NAME("memcpy") "\n\t"
1114 __ASM_CFI(".cfi_def_cfa 31, 0\n\t")
1115 __ASM_CFI(".cfi_escape 0x0f,0x04,0x8f,0x80,0x02,0x06\n\t") /* CFA, DW_OP_breg31 + 0x100, DW_OP_deref */
1116 __ASM_CFI(".cfi_escape 0x10,0x13,0x03,0x8f,0xa0,0x01\n\t") /* x19, DW_OP_breg31 + 0xA0 */
1117 __ASM_CFI(".cfi_escape 0x10,0x14,0x03,0x8f,0xa8,0x01\n\t") /* x20 */
1118 __ASM_CFI(".cfi_escape 0x10,0x15,0x03,0x8f,0xb0,0x01\n\t") /* x21 */
1119 __ASM_CFI(".cfi_escape 0x10,0x16,0x03,0x8f,0xb8,0x01\n\t") /* x22 */
1120 __ASM_CFI(".cfi_escape 0x10,0x17,0x03,0x8f,0xc0,0x01\n\t") /* x23 */
1121 __ASM_CFI(".cfi_escape 0x10,0x18,0x03,0x8f,0xc8,0x01\n\t") /* x24 */
1122 __ASM_CFI(".cfi_escape 0x10,0x19,0x03,0x8f,0xd0,0x01\n\t") /* x25 */
1123 __ASM_CFI(".cfi_escape 0x10,0x1a,0x03,0x8f,0xd8,0x01\n\t") /* x26 */
1124 __ASM_CFI(".cfi_escape 0x10,0x1b,0x03,0x8f,0xe0,0x01\n\t") /* x27 */
1125 __ASM_CFI(".cfi_escape 0x10,0x1c,0x03,0x8f,0xe8,0x01\n\t") /* x28 */
1126 __ASM_CFI(".cfi_escape 0x10,0x1d,0x03,0x8f,0xf0,0x01\n\t") /* x29 */
1127 __ASM_CFI(".cfi_escape 0x10,0x1e,0x03,0x8f,0xf8,0x01\n\t") /* x30 */
1128 __ASM_CFI(".cfi_escape 0x10,0x48,0x03,0x8f,0x90,0x03\n\t") /* d8 */
1129 __ASM_CFI(".cfi_escape 0x10,0x49,0x03,0x8f,0x98,0x03\n\t") /* d9 */
1130 __ASM_CFI(".cfi_escape 0x10,0x4a,0x03,0x8f,0xa0,0x03\n\t") /* d10 */
1131 __ASM_CFI(".cfi_escape 0x10,0x4b,0x03,0x8f,0xa8,0x03\n\t") /* d11 */
1132 __ASM_CFI(".cfi_escape 0x10,0x4c,0x03,0x8f,0xb0,0x03\n\t") /* d12 */
1133 __ASM_CFI(".cfi_escape 0x10,0x4d,0x03,0x8f,0xb8,0x03\n\t") /* d13 */
1134 __ASM_CFI(".cfi_escape 0x10,0x4e,0x03,0x8f,0xc0,0x03\n\t") /* d14 */
1135 __ASM_CFI(".cfi_escape 0x10,0x4f,0x03,0x8f,0xc8,0x03\n\t") /* d15 */
1136 __ASM_SEH(".seh_context\n\t")
1137 __ASM_SEH(".seh_endprologue\n\t")
1138 "ldp x1, x2, [x29, #0x10]\n\t"
1139 "ldr x18, [x29, #0x20]\n\t"
1143 __ASM_CFI(".cfi_restore_state\n\t")
1144 "ldp x29, x30, [sp], #48\n\t"
1145 __ASM_CFI(".cfi_restore 30\n\t")
1146 __ASM_CFI(".cfi_restore 29\n\t")
1147 __ASM_CFI(".cfi_def_cfa 31, 0\n\t")
1150 /*******************************************************************
1151 * RtlRestoreContext (NTDLL.@)
1153 void CDECL
RtlRestoreContext( CONTEXT
*context
, EXCEPTION_RECORD
*rec
)
1155 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
1157 if (rec
&& rec
->ExceptionCode
== STATUS_LONGJUMP
&& rec
->NumberParameters
>= 1)
1159 struct MSVCRT_JUMP_BUFFER
*jmp
= (struct MSVCRT_JUMP_BUFFER
*)rec
->ExceptionInformation
[0];
1162 context
->X19
= jmp
->X19
;
1163 context
->X20
= jmp
->X20
;
1164 context
->X21
= jmp
->X21
;
1165 context
->X22
= jmp
->X22
;
1166 context
->X23
= jmp
->X23
;
1167 context
->X24
= jmp
->X24
;
1168 context
->X25
= jmp
->X25
;
1169 context
->X26
= jmp
->X26
;
1170 context
->X27
= jmp
->X27
;
1171 context
->X28
= jmp
->X28
;
1172 context
->Fp
= jmp
->Fp
;
1173 context
->Lr
= jmp
->Lr
;
1174 context
->Sp
= jmp
->Sp
;
1175 context
->Fpcr
= jmp
->Fpcr
;
1176 context
->Fpsr
= jmp
->Fpsr
;
1178 for (i
= 0; i
< 8; i
++)
1179 context
->V
[8+i
].D
[0] = jmp
->D
[i
];
1181 else if (rec
&& rec
->ExceptionCode
== STATUS_UNWIND_CONSOLIDATE
&& rec
->NumberParameters
>= 1)
1183 PVOID (CALLBACK
*consolidate
)(EXCEPTION_RECORD
*) = (void *)rec
->ExceptionInformation
[0];
1184 TRACE( "calling consolidate callback %p (rec=%p)\n", consolidate
, rec
);
1185 rec
->ExceptionInformation
[10] = (ULONG_PTR
)&context
->X19
;
1187 context
->Pc
= (ULONG64
)call_consolidate_callback( context
, consolidate
, rec
, NtCurrentTeb() );
1190 /* hack: remove no longer accessible TEB frames */
1191 while ((ULONG64
)teb_frame
< context
->Sp
)
1193 TRACE( "removing TEB frame: %p\n", teb_frame
);
1194 teb_frame
= __wine_pop_frame( teb_frame
);
1197 TRACE( "returning to %I64x stack %I64x\n", context
->Pc
, context
->Sp
);
1198 NtContinue( context
, FALSE
);
1201 /*******************************************************************
1202 * RtlUnwindEx (NTDLL.@)
1204 void WINAPI
RtlUnwindEx( PVOID end_frame
, PVOID target_ip
, EXCEPTION_RECORD
*rec
,
1205 PVOID retval
, CONTEXT
*context
, UNWIND_HISTORY_TABLE
*table
)
1207 EXCEPTION_REGISTRATION_RECORD
*teb_frame
= NtCurrentTeb()->Tib
.ExceptionList
;
1208 EXCEPTION_RECORD record
;
1209 DISPATCHER_CONTEXT dispatch
;
1210 CONTEXT new_context
;
1214 RtlCaptureContext( context
);
1215 new_context
= *context
;
1217 /* build an exception record, if we do not have one */
1220 record
.ExceptionCode
= STATUS_UNWIND
;
1221 record
.ExceptionFlags
= 0;
1222 record
.ExceptionRecord
= NULL
;
1223 record
.ExceptionAddress
= (void *)context
->Pc
;
1224 record
.NumberParameters
= 0;
1228 rec
->ExceptionFlags
|= EH_UNWINDING
| (end_frame
? 0 : EH_EXIT_UNWIND
);
1230 TRACE( "code=%lx flags=%lx end_frame=%p target_ip=%p pc=%016I64x\n",
1231 rec
->ExceptionCode
, rec
->ExceptionFlags
, end_frame
, target_ip
, context
->Pc
);
1232 for (i
= 0; i
< min( EXCEPTION_MAXIMUM_PARAMETERS
, rec
->NumberParameters
); i
++)
1233 TRACE( " info[%ld]=%016I64x\n", i
, rec
->ExceptionInformation
[i
] );
1234 TRACE(" x0=%016I64x x1=%016I64x x2=%016I64x x3=%016I64x\n",
1235 context
->X0
, context
->X1
, context
->X2
, context
->X3
);
1236 TRACE(" x4=%016I64x x5=%016I64x x6=%016I64x x7=%016I64x\n",
1237 context
->X4
, context
->X5
, context
->X6
, context
->X7
);
1238 TRACE(" x8=%016I64x x9=%016I64x x10=%016I64x x11=%016I64x\n",
1239 context
->X8
, context
->X9
, context
->X10
, context
->X11
);
1240 TRACE(" x12=%016I64x x13=%016I64x x14=%016I64x x15=%016I64x\n",
1241 context
->X12
, context
->X13
, context
->X14
, context
->X15
);
1242 TRACE(" x16=%016I64x x17=%016I64x x18=%016I64x x19=%016I64x\n",
1243 context
->X16
, context
->X17
, context
->X18
, context
->X19
);
1244 TRACE(" x20=%016I64x x21=%016I64x x22=%016I64x x23=%016I64x\n",
1245 context
->X20
, context
->X21
, context
->X22
, context
->X23
);
1246 TRACE(" x24=%016I64x x25=%016I64x x26=%016I64x x27=%016I64x\n",
1247 context
->X24
, context
->X25
, context
->X26
, context
->X27
);
1248 TRACE(" x28=%016I64x fp=%016I64x lr=%016I64x sp=%016I64x\n",
1249 context
->X28
, context
->Fp
, context
->Lr
, context
->Sp
);
1251 dispatch
.TargetPc
= (ULONG64
)target_ip
;
1252 dispatch
.ContextRecord
= context
;
1253 dispatch
.HistoryTable
= table
;
1254 dispatch
.NonVolatileRegisters
= (BYTE
*)&context
->X19
;
1258 status
= virtual_unwind( UNW_FLAG_UHANDLER
, &dispatch
, &new_context
);
1259 if (status
!= STATUS_SUCCESS
) raise_status( status
, rec
);
1262 if (!dispatch
.EstablisherFrame
) break;
1264 if (!is_valid_frame( dispatch
.EstablisherFrame
))
1266 ERR( "invalid frame %I64x (%p-%p)\n", dispatch
.EstablisherFrame
,
1267 NtCurrentTeb()->Tib
.StackLimit
, NtCurrentTeb()->Tib
.StackBase
);
1268 rec
->ExceptionFlags
|= EH_STACK_INVALID
;
1272 if (dispatch
.LanguageHandler
)
1274 if (end_frame
&& (dispatch
.EstablisherFrame
> (ULONG64
)end_frame
))
1276 ERR( "invalid end frame %I64x/%p\n", dispatch
.EstablisherFrame
, end_frame
);
1277 raise_status( STATUS_INVALID_UNWIND_TARGET
, rec
);
1279 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) rec
->ExceptionFlags
|= EH_TARGET_UNWIND
;
1280 if (call_unwind_handler( rec
, &dispatch
) == ExceptionCollidedUnwind
)
1284 *context
= new_context
= *dispatch
.ContextRecord
;
1285 dispatch
.ContextRecord
= context
;
1286 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
1287 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
1288 &new_context
, &dispatch
.HandlerData
, &frame
,
1290 rec
->ExceptionFlags
|= EH_COLLIDED_UNWIND
;
1293 rec
->ExceptionFlags
&= ~EH_COLLIDED_UNWIND
;
1295 else /* hack: call builtin handlers registered in the tib list */
1297 DWORD64 backup_frame
= dispatch
.EstablisherFrame
;
1298 while ((ULONG64
)teb_frame
< new_context
.Sp
&& (ULONG64
)teb_frame
< (ULONG64
)end_frame
)
1300 TRACE( "found builtin frame %p handler %p\n", teb_frame
, teb_frame
->Handler
);
1301 dispatch
.EstablisherFrame
= (ULONG64
)teb_frame
;
1302 if (call_teb_unwind_handler( rec
, &dispatch
, teb_frame
) == ExceptionCollidedUnwind
)
1306 teb_frame
= __wine_pop_frame( teb_frame
);
1308 *context
= new_context
= *dispatch
.ContextRecord
;
1309 dispatch
.ContextRecord
= context
;
1310 RtlVirtualUnwind( UNW_FLAG_NHANDLER
, dispatch
.ImageBase
,
1311 dispatch
.ControlPc
, dispatch
.FunctionEntry
,
1312 &new_context
, &dispatch
.HandlerData
,
1314 rec
->ExceptionFlags
|= EH_COLLIDED_UNWIND
;
1317 teb_frame
= __wine_pop_frame( teb_frame
);
1319 if ((ULONG64
)teb_frame
== (ULONG64
)end_frame
&& (ULONG64
)end_frame
< new_context
.Sp
) break;
1320 dispatch
.EstablisherFrame
= backup_frame
;
1323 if (dispatch
.EstablisherFrame
== (ULONG64
)end_frame
) break;
1324 *context
= new_context
;
1327 context
->X0
= (ULONG64
)retval
;
1328 context
->Pc
= (ULONG64
)target_ip
;
1329 RtlRestoreContext(context
, rec
);
1333 /***********************************************************************
1334 * RtlUnwind (NTDLL.@)
1336 void WINAPI
RtlUnwind( void *frame
, void *target_ip
, EXCEPTION_RECORD
*rec
, void *retval
)
1339 RtlUnwindEx( frame
, target_ip
, rec
, retval
, &context
, NULL
);
1342 /*******************************************************************
1343 * _local_unwind (NTDLL.@)
1345 void WINAPI
_local_unwind( void *frame
, void *target_ip
)
1348 RtlUnwindEx( frame
, target_ip
, NULL
, NULL
, &context
, NULL
);
1351 extern LONG
__C_ExecuteExceptionFilter(PEXCEPTION_POINTERS ptrs
, PVOID frame
,
1352 PEXCEPTION_FILTER filter
,
1353 PUCHAR nonvolatile
);
1354 __ASM_GLOBAL_FUNC( __C_ExecuteExceptionFilter
,
1355 "stp x29, x30, [sp, #-96]!\n\t"
1356 __ASM_SEH(".seh_save_fplr_x 96\n\t")
1357 "stp x19, x20, [sp, #16]\n\t"
1358 __ASM_SEH(".seh_save_regp x19, 16\n\t")
1359 "stp x21, x22, [sp, #32]\n\t"
1360 __ASM_SEH(".seh_save_regp x21, 32\n\t")
1361 "stp x23, x24, [sp, #48]\n\t"
1362 __ASM_SEH(".seh_save_regp x23, 48\n\t")
1363 "stp x25, x26, [sp, #64]\n\t"
1364 __ASM_SEH(".seh_save_regp x25, 64\n\t")
1365 "stp x27, x28, [sp, #80]\n\t"
1366 __ASM_SEH(".seh_save_regp x27, 80\n\t")
1368 __ASM_SEH(".seh_set_fp\n\t")
1369 __ASM_SEH(".seh_endprologue\n\t")
1371 __ASM_CFI(".cfi_def_cfa x29, 96\n\t")
1372 __ASM_CFI(".cfi_offset x29, -96\n\t")
1373 __ASM_CFI(".cfi_offset x30, -88\n\t")
1374 __ASM_CFI(".cfi_offset x19, -80\n\t")
1375 __ASM_CFI(".cfi_offset x20, -72\n\t")
1376 __ASM_CFI(".cfi_offset x21, -64\n\t")
1377 __ASM_CFI(".cfi_offset x22, -56\n\t")
1378 __ASM_CFI(".cfi_offset x23, -48\n\t")
1379 __ASM_CFI(".cfi_offset x24, -40\n\t")
1380 __ASM_CFI(".cfi_offset x25, -32\n\t")
1381 __ASM_CFI(".cfi_offset x26, -24\n\t")
1382 __ASM_CFI(".cfi_offset x27, -16\n\t")
1383 __ASM_CFI(".cfi_offset x28, -8\n\t")
1385 "ldp x19, x20, [x3, #0]\n\t"
1386 "ldp x21, x22, [x3, #16]\n\t"
1387 "ldp x23, x24, [x3, #32]\n\t"
1388 "ldp x25, x26, [x3, #48]\n\t"
1389 "ldp x27, x28, [x3, #64]\n\t"
1390 /* Overwrite the frame parameter with Fp from the
1391 * nonvolatile regs */
1392 "ldr x1, [x3, #80]\n\t"
1394 "ldp x19, x20, [sp, #16]\n\t"
1395 "ldp x21, x22, [sp, #32]\n\t"
1396 "ldp x23, x24, [sp, #48]\n\t"
1397 "ldp x25, x26, [sp, #64]\n\t"
1398 "ldp x27, x28, [sp, #80]\n\t"
1399 "ldp x29, x30, [sp], #96\n\t"
1402 extern void __C_ExecuteTerminationHandler(BOOL abnormal
, PVOID frame
,
1403 PTERMINATION_HANDLER handler
,
1404 PUCHAR nonvolatile
);
1405 /* This is, implementation wise, identical to __C_ExecuteExceptionFilter. */
1406 __ASM_GLOBAL_FUNC( __C_ExecuteTerminationHandler
,
1407 "b " __ASM_NAME("__C_ExecuteExceptionFilter") "\n\t");
1409 /*******************************************************************
1410 * __C_specific_handler (NTDLL.@)
1412 EXCEPTION_DISPOSITION WINAPI
__C_specific_handler( EXCEPTION_RECORD
*rec
,
1415 struct _DISPATCHER_CONTEXT
*dispatch
)
1417 SCOPE_TABLE
*table
= dispatch
->HandlerData
;
1419 DWORD64 ControlPc
= dispatch
->ControlPc
;
1421 TRACE( "%p %p %p %p\n", rec
, frame
, context
, dispatch
);
1422 if (TRACE_ON(seh
)) dump_scope_table( dispatch
->ImageBase
, table
);
1424 if (dispatch
->ControlPcIsUnwound
)
1427 if (rec
->ExceptionFlags
& (EH_UNWINDING
| EH_EXIT_UNWIND
))
1429 for (i
= dispatch
->ScopeIndex
; i
< table
->Count
; i
++)
1431 if (ControlPc
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
1432 ControlPc
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
1434 PTERMINATION_HANDLER handler
;
1436 if (table
->ScopeRecord
[i
].JumpTarget
) continue;
1438 if (rec
->ExceptionFlags
& EH_TARGET_UNWIND
&&
1439 dispatch
->TargetPc
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
1440 dispatch
->TargetPc
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
1445 handler
= (PTERMINATION_HANDLER
)(dispatch
->ImageBase
+ table
->ScopeRecord
[i
].HandlerAddress
);
1446 dispatch
->ScopeIndex
= i
+1;
1448 TRACE( "calling __finally %p frame %p\n", handler
, frame
);
1449 __C_ExecuteTerminationHandler( TRUE
, frame
, handler
,
1450 dispatch
->NonVolatileRegisters
);
1453 return ExceptionContinueSearch
;
1456 for (i
= dispatch
->ScopeIndex
; i
< table
->Count
; i
++)
1458 if (ControlPc
>= dispatch
->ImageBase
+ table
->ScopeRecord
[i
].BeginAddress
&&
1459 ControlPc
< dispatch
->ImageBase
+ table
->ScopeRecord
[i
].EndAddress
)
1461 if (!table
->ScopeRecord
[i
].JumpTarget
) continue;
1462 if (table
->ScopeRecord
[i
].HandlerAddress
!= EXCEPTION_EXECUTE_HANDLER
)
1464 EXCEPTION_POINTERS ptrs
;
1465 PEXCEPTION_FILTER filter
;
1467 filter
= (PEXCEPTION_FILTER
)(dispatch
->ImageBase
+ table
->ScopeRecord
[i
].HandlerAddress
);
1468 ptrs
.ExceptionRecord
= rec
;
1469 ptrs
.ContextRecord
= context
;
1470 TRACE( "calling filter %p ptrs %p frame %p\n", filter
, &ptrs
, frame
);
1471 switch (__C_ExecuteExceptionFilter( &ptrs
, frame
, filter
,
1472 dispatch
->NonVolatileRegisters
))
1474 case EXCEPTION_EXECUTE_HANDLER
:
1476 case EXCEPTION_CONTINUE_SEARCH
:
1478 case EXCEPTION_CONTINUE_EXECUTION
:
1479 return ExceptionContinueExecution
;
1482 TRACE( "unwinding to target %I64x\n", dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
);
1483 RtlUnwindEx( frame
, (char *)dispatch
->ImageBase
+ table
->ScopeRecord
[i
].JumpTarget
,
1484 rec
, 0, dispatch
->ContextRecord
, dispatch
->HistoryTable
);
1487 return ExceptionContinueSearch
;
1491 /***********************************************************************
1492 * RtlRaiseException (NTDLL.@)
1494 __ASM_STDCALL_FUNC( RtlRaiseException
, 4,
1495 "sub sp, sp, #0x3b0\n\t" /* 0x390 (context) + 0x20 */
1496 "stp x29, x30, [sp]\n\t"
1497 __ASM_SEH(".seh_stackalloc 0x3b0\n\t")
1498 __ASM_SEH(".seh_save_fplr 0\n\t")
1499 __ASM_SEH(".seh_endprologue\n\t")
1500 __ASM_CFI(".cfi_def_cfa x29, 944\n\t")
1501 __ASM_CFI(".cfi_offset x30, -936\n\t")
1502 __ASM_CFI(".cfi_offset x29, -944\n\t")
1504 "str x0, [sp, #0x10]\n\t"
1505 "add x0, sp, #0x20\n\t"
1506 "bl " __ASM_NAME("RtlCaptureContext") "\n\t"
1507 "add x1, sp, #0x20\n\t" /* context pointer */
1508 "add x2, sp, #0x3b0\n\t" /* orig stack pointer */
1509 "str x2, [x1, #0x100]\n\t" /* context->Sp */
1510 "ldr x0, [sp, #0x10]\n\t" /* original first parameter */
1511 "str x0, [x1, #0x08]\n\t" /* context->X0 */
1512 "ldp x4, x5, [sp]\n\t" /* frame pointer, return address */
1513 "stp x4, x5, [x1, #0xf0]\n\t" /* context->Fp, Lr */
1514 "str x5, [x1, #0x108]\n\t" /* context->Pc */
1515 "str x5, [x0, #0x10]\n\t" /* rec->ExceptionAddress */
1517 "bl " __ASM_NAME("NtRaiseException") "\n\t"
1518 "bl " __ASM_NAME("RtlRaiseStatus") /* does not return */ );
1520 /*************************************************************************
1521 * RtlCaptureStackBackTrace (NTDLL.@)
1523 USHORT WINAPI
RtlCaptureStackBackTrace( ULONG skip
, ULONG count
, PVOID
*buffer
, ULONG
*hash
)
1525 FIXME( "(%ld, %ld, %p, %p) stub!\n", skip
, count
, buffer
, hash
);
1529 /***********************************************************************
1530 * signal_start_thread
1532 __ASM_GLOBAL_FUNC( signal_start_thread
,
1533 "mov sp, x0\n\t" /* context */
1535 "b " __ASM_NAME("NtContinue") )
1537 /**********************************************************************
1538 * DbgBreakPoint (NTDLL.@)
1540 __ASM_STDCALL_FUNC( DbgBreakPoint
, 0, "brk #0xf000; ret"
1541 "\n\tnop; nop; nop; nop; nop; nop; nop; nop"
1542 "\n\tnop; nop; nop; nop; nop; nop" );
1544 /**********************************************************************
1545 * DbgUserBreakPoint (NTDLL.@)
1547 __ASM_STDCALL_FUNC( DbgUserBreakPoint
, 0, "brk #0xf000; ret"
1548 "\n\tnop; nop; nop; nop; nop; nop; nop; nop"
1549 "\n\tnop; nop; nop; nop; nop; nop" );
1551 /**********************************************************************
1552 * NtCurrentTeb (NTDLL.@)
1554 TEB
* WINAPI
NtCurrentTeb(void)
1556 return __wine_current_teb();
1559 #endif /* __aarch64__ */