ReactOS 0.4.15-dev-7931-gfd331f1
unwind.c
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1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS system libraries
4 * PURPOSE: Unwinding related functions
5 * PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
6 */
7
8/* INCLUDES *****************************************************************/
9
10#include <rtl.h>
11
12#define NDEBUG
13#include <debug.h>
14
15#define UNWIND_HISTORY_TABLE_NONE 0
16#define UNWIND_HISTORY_TABLE_GLOBAL 1
17#define UNWIND_HISTORY_TABLE_LOCAL 2
18
19#define UWOP_PUSH_NONVOL 0
20#define UWOP_ALLOC_LARGE 1
21#define UWOP_ALLOC_SMALL 2
22#define UWOP_SET_FPREG 3
23#define UWOP_SAVE_NONVOL 4
24#define UWOP_SAVE_NONVOL_FAR 5
25#if 0 // These are deprecated / not for x64
26#define UWOP_SAVE_XMM 6
27#define UWOP_SAVE_XMM_FAR 7
28#else
29#define UWOP_EPILOG 6
30#define UWOP_SPARE_CODE 7
31#endif
32#define UWOP_SAVE_XMM128 8
33#define UWOP_SAVE_XMM128_FAR 9
34#define UWOP_PUSH_MACHFRAME 10
35
36
37typedef unsigned char UBYTE;
38
39typedef union _UNWIND_CODE
40{
41 struct
42 {
46 };
49
50typedef struct _UNWIND_INFO
51{
59/* union {
60 OPTIONAL ULONG ExceptionHandler;
61 OPTIONAL ULONG FunctionEntry;
62 };
63 OPTIONAL ULONG ExceptionData[];
64*/
66
67/* FUNCTIONS *****************************************************************/
68
83 IN DWORD64 ControlPc,
84 OUT PDWORD64 ImageBase,
86{
88 ULONG Size;
89
90 /* Find corresponding file header from code address */
91 if (!RtlPcToFileHeader((PVOID)ControlPc, (PVOID*)ImageBase))
92 {
93 /* Nothing found */
94 return NULL;
95 }
96
97 /* Locate the exception directory */
99 TRUE,
101 &Size);
102
103 /* Return the number of entries */
104 *Length = Size / sizeof(RUNTIME_FUNCTION);
105
106 /* Return the address of the table */
107 return Table;
108}
109
111NTAPI
113 _In_ DWORD64 ControlPc,
114 _Out_ PDWORD64 ImageBase,
115 _In_ PUNWIND_HISTORY_TABLE HistoryTable);
116
123NTAPI
125 IN DWORD64 ControlPc,
126 OUT PDWORD64 ImageBase,
127 OUT PUNWIND_HISTORY_TABLE HistoryTable)
128{
129 PRUNTIME_FUNCTION FunctionTable, FunctionEntry;
130 ULONG TableLength;
131 ULONG IndexLo, IndexHi, IndexMid;
132
133 /* Find the corresponding table */
134 FunctionTable = RtlLookupFunctionTable(ControlPc, ImageBase, &TableLength);
135
136 /* If no table is found, try dynamic function tables */
137 if (!FunctionTable)
138 {
139 return RtlpLookupDynamicFunctionEntry(ControlPc, ImageBase, HistoryTable);
140 }
141
142 /* Use relative virtual address */
143 ControlPc -= *ImageBase;
144
145 /* Do a binary search */
146 IndexLo = 0;
147 IndexHi = TableLength;
148 while (IndexHi > IndexLo)
149 {
150 IndexMid = (IndexLo + IndexHi) / 2;
151 FunctionEntry = &FunctionTable[IndexMid];
152
153 if (ControlPc < FunctionEntry->BeginAddress)
154 {
155 /* Continue search in lower half */
156 IndexHi = IndexMid;
157 }
158 else if (ControlPc >= FunctionEntry->EndAddress)
159 {
160 /* Continue search in upper half */
161 IndexLo = IndexMid + 1;
162 }
163 else
164 {
165 /* ControlPc is within limits, return entry */
166 return FunctionEntry;
167 }
168 }
169
170 /* Nothing found, return NULL */
171 return NULL;
172}
173
174static
175__inline
176ULONG
178 _In_ UNWIND_CODE UnwindCode)
179{
180 static const UCHAR UnwindOpExtraSlotTable[] =
181 {
182 0, // UWOP_PUSH_NONVOL
183 1, // UWOP_ALLOC_LARGE (or 3, special cased in lookup code)
184 0, // UWOP_ALLOC_SMALL
185 0, // UWOP_SET_FPREG
186 1, // UWOP_SAVE_NONVOL
187 2, // UWOP_SAVE_NONVOL_FAR
188 1, // UWOP_EPILOG // previously UWOP_SAVE_XMM
189 2, // UWOP_SPARE_CODE // previously UWOP_SAVE_XMM_FAR
190 1, // UWOP_SAVE_XMM128
191 2, // UWOP_SAVE_XMM128_FAR
192 0, // UWOP_PUSH_MACHFRAME
193 2, // UWOP_SET_FPREG_LARGE
194 };
195
196 if ((UnwindCode.UnwindOp == UWOP_ALLOC_LARGE) &&
197 (UnwindCode.OpInfo != 0))
198 {
199 return 3;
200 }
201 else
202 {
203 return UnwindOpExtraSlotTable[UnwindCode.UnwindOp] + 1;
204 }
205}
206
207static
208__inline
209void
212 _In_ BYTE Reg,
214{
215 ((DWORD64*)(&Context->Rax))[Reg] = Value;
216}
217
218static
219__inline
220void
223 _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers,
224 _In_ BYTE Reg,
225 _In_ PDWORD64 ValuePointer)
226{
227 SetReg(Context, Reg, *ValuePointer);
228 if (ContextPointers != NULL)
229 {
230 ContextPointers->IntegerContext[Reg] = ValuePointer;
231 }
232}
233
234static
235__inline
239 _In_ BYTE Reg)
240{
241 return ((DWORD64*)(&Context->Rax))[Reg];
242}
243
244static
245__inline
246void
249 _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers,
250 _In_ BYTE Reg)
251{
252 SetRegFromStackValue(Context, ContextPointers, Reg, (PDWORD64)Context->Rsp);
253 Context->Rsp += sizeof(DWORD64);
254}
255
256static
257__inline
258void
261 _In_ BYTE Reg,
263{
264 ((M128A*)(&Context->Xmm0))[Reg] = Value;
265}
266
267static
268__inline
269void
272 _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers,
273 _In_ BYTE Reg,
274 _In_ M128A *ValuePointer)
275{
276 SetXmmReg(Context, Reg, *ValuePointer);
277 if (ContextPointers != NULL)
278 {
279 ContextPointers->FloatingContext[Reg] = ValuePointer;
280 }
281}
282
283static
284__inline
285M128A
287{
288 return ((M128A*)(&Context->Xmm0))[Reg];
289}
290
301static
302__inline
306 _In_ ULONG64 ControlPc,
307 _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers,
308 _In_ ULONG64 ImageBase,
309 _In_ PRUNTIME_FUNCTION FunctionEntry)
310{
311 CONTEXT LocalContext;
312 BYTE *InstrPtr;
313 DWORD Instr;
314 BYTE Reg, Mod;
315 ULONG64 EndAddress;
316
317 /* Make a local copy of the context */
318 LocalContext = *Context;
319
320 InstrPtr = (BYTE*)ControlPc;
321
322 /* Check if first instruction of epilog is "add rsp, x" */
323 Instr = *(DWORD*)InstrPtr;
324 if ( (Instr & 0x00fffdff) == 0x00c48148 )
325 {
326 if ( (Instr & 0x0000ff00) == 0x8300 )
327 {
328 /* This is "add rsp, 0x??" */
329 LocalContext.Rsp += Instr >> 24;
330 InstrPtr += 4;
331 }
332 else
333 {
334 /* This is "add rsp, 0x???????? */
335 LocalContext.Rsp += *(DWORD*)(InstrPtr + 3);
336 InstrPtr += 7;
337 }
338 }
339 /* Check if first instruction of epilog is "lea rsp, ..." */
340 else if ( (Instr & 0x38fffe) == 0x208d48 )
341 {
342 /* Get the register */
343 Reg = (Instr >> 16) & 0x7;
344
345 /* REX.R */
346 Reg += (Instr & 1) * 8;
347
348 LocalContext.Rsp = GetReg(&LocalContext, Reg);
349
350 /* Get addressing mode */
351 Mod = (Instr >> 22) & 0x3;
352 if (Mod == 0)
353 {
354 /* No displacement */
355 InstrPtr += 3;
356 }
357 else if (Mod == 1)
358 {
359 /* 1 byte displacement */
360 LocalContext.Rsp += (LONG)(CHAR)(Instr >> 24);
361 InstrPtr += 4;
362 }
363 else if (Mod == 2)
364 {
365 /* 4 bytes displacement */
366 LocalContext.Rsp += *(LONG*)(InstrPtr + 3);
367 InstrPtr += 7;
368 }
369 }
370
371 /* Loop the following instructions before the ret */
372 EndAddress = FunctionEntry->EndAddress + ImageBase - 1;
373 while ((DWORD64)InstrPtr < EndAddress)
374 {
375 Instr = *(DWORD*)InstrPtr;
376
377 /* Check for a simple pop */
378 if ( (Instr & 0xf8) == 0x58 )
379 {
380 /* Opcode pops a basic register from stack */
381 Reg = Instr & 0x7;
382 PopReg(&LocalContext, ContextPointers, Reg);
383 InstrPtr++;
384 continue;
385 }
386
387 /* Check for REX + pop */
388 if ( (Instr & 0xf8fb) == 0x5841 )
389 {
390 /* Opcode is pop r8 .. r15 */
391 Reg = ((Instr >> 8) & 0x7) + 8;
392 PopReg(&LocalContext, ContextPointers, Reg);
393 InstrPtr += 2;
394 continue;
395 }
396
397 /* Opcode not allowed for Epilog */
398 return FALSE;
399 }
400
401 // check for popfq
402
403 // also allow end with jmp imm, jmp [target], iretq
404
405 /* Check if we are at the ret instruction */
406 if ((DWORD64)InstrPtr != EndAddress)
407 {
408 /* If we went past the end of the function, something is broken! */
409 ASSERT((DWORD64)InstrPtr <= EndAddress);
410 return FALSE;
411 }
412
413 /* Make sure this is really a ret instruction */
414 if (*InstrPtr != 0xc3)
415 {
416 return FALSE;
417 }
418
419 /* Unwind is finished, pop new Rip from Stack */
420 LocalContext.Rip = *(DWORD64*)LocalContext.Rsp;
421 LocalContext.Rsp += sizeof(DWORD64);
422
423 *Context = LocalContext;
424 return TRUE;
425}
426
431static
435 _In_ PUNWIND_INFO UnwindInfo,
436 _In_ ULONG_PTR CodeOffset)
437{
438 ULONG i;
439
440 /* Check if we have a frame register */
441 if (UnwindInfo->FrameRegister == 0)
442 {
443 /* No frame register means we use Rsp */
444 return Context->Rsp;
445 }
446
447 if ((CodeOffset >= UnwindInfo->SizeOfProlog) ||
448 ((UnwindInfo->Flags & UNW_FLAG_CHAININFO) != 0))
449 {
450 return GetReg(Context, UnwindInfo->FrameRegister) -
451 UnwindInfo->FrameOffset * 16;
452 }
453
454 /* Loop all unwind ops */
455 for (i = 0;
456 i < UnwindInfo->CountOfCodes;
457 i += UnwindOpSlots(UnwindInfo->UnwindCode[i]))
458 {
459 /* Skip codes past our code offset */
460 if (UnwindInfo->UnwindCode[i].CodeOffset > CodeOffset)
461 {
462 continue;
463 }
464
465 /* Check for SET_FPREG */
466 if (UnwindInfo->UnwindCode[i].UnwindOp == UWOP_SET_FPREG)
467 {
468 return GetReg(Context, UnwindInfo->FrameRegister) -
469 UnwindInfo->FrameOffset * 16;
470 }
471 }
472
473 return Context->Rsp;
474}
475
477NTAPI
480 _In_ ULONG64 ImageBase,
481 _In_ ULONG64 ControlPc,
482 _In_ PRUNTIME_FUNCTION FunctionEntry,
484 _Outptr_ PVOID *HandlerData,
486 _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers)
487{
488 PUNWIND_INFO UnwindInfo;
489 ULONG_PTR ControlRva, CodeOffset;
490 ULONG i, Offset;
491 UNWIND_CODE UnwindCode;
492 BYTE Reg;
493 PULONG LanguageHandler;
494
495 /* Get relative virtual address */
496 ControlRva = ControlPc - ImageBase;
497
498 /* Sanity checks */
499 if ( (ControlRva < FunctionEntry->BeginAddress) ||
500 (ControlRva >= FunctionEntry->EndAddress) )
501 {
502 return NULL;
503 }
504
505 /* Get a pointer to the unwind info */
506 UnwindInfo = RVA(ImageBase, FunctionEntry->UnwindData);
507
508 /* The language specific handler data follows the unwind info */
509 LanguageHandler = ALIGN_UP_POINTER_BY(&UnwindInfo->UnwindCode[UnwindInfo->CountOfCodes], sizeof(ULONG));
510
511 /* Calculate relative offset to function start */
512 CodeOffset = ControlRva - FunctionEntry->BeginAddress;
513
514 *EstablisherFrame = GetEstablisherFrame(Context, UnwindInfo, CodeOffset);
515
516 /* Check if we are in the function epilog and try to finish it */
517 if ((CodeOffset > UnwindInfo->SizeOfProlog) && (UnwindInfo->CountOfCodes > 0))
518 {
519 if (RtlpTryToUnwindEpilog(Context, ControlPc, ContextPointers, ImageBase, FunctionEntry))
520 {
521 /* There's no exception routine */
522 return NULL;
523 }
524 }
525
526 /* Skip all Ops with an offset greater than the current Offset */
527 i = 0;
528 while ((i < UnwindInfo->CountOfCodes) &&
529 (UnwindInfo->UnwindCode[i].CodeOffset > CodeOffset))
530 {
531 i += UnwindOpSlots(UnwindInfo->UnwindCode[i]);
532 }
533
534RepeatChainedInfo:
535
536 /* Process the remaining unwind ops */
537 while (i < UnwindInfo->CountOfCodes)
538 {
539 UnwindCode = UnwindInfo->UnwindCode[i];
540 switch (UnwindCode.UnwindOp)
541 {
542 case UWOP_PUSH_NONVOL:
543 Reg = UnwindCode.OpInfo;
544 PopReg(Context, ContextPointers, Reg);
545 i++;
546 break;
547
548 case UWOP_ALLOC_LARGE:
549 if (UnwindCode.OpInfo)
550 {
551 Offset = *(ULONG*)(&UnwindInfo->UnwindCode[i+1]);
552 Context->Rsp += Offset;
553 i += 3;
554 }
555 else
556 {
557 Offset = UnwindInfo->UnwindCode[i+1].FrameOffset;
558 Context->Rsp += Offset * 8;
559 i += 2;
560 }
561 break;
562
563 case UWOP_ALLOC_SMALL:
564 Context->Rsp += (UnwindCode.OpInfo + 1) * 8;
565 i++;
566 break;
567
568 case UWOP_SET_FPREG:
569 Reg = UnwindInfo->FrameRegister;
570 Context->Rsp = GetReg(Context, Reg) - UnwindInfo->FrameOffset * 16;
571 i++;
572 break;
573
574 case UWOP_SAVE_NONVOL:
575 Reg = UnwindCode.OpInfo;
576 Offset = UnwindInfo->UnwindCode[i + 1].FrameOffset;
577 SetRegFromStackValue(Context, ContextPointers, Reg, (DWORD64*)Context->Rsp + Offset);
578 i += 2;
579 break;
580
582 Reg = UnwindCode.OpInfo;
583 Offset = *(ULONG*)(&UnwindInfo->UnwindCode[i + 1]);
584 SetRegFromStackValue(Context, ContextPointers, Reg, (DWORD64*)Context->Rsp + Offset);
585 i += 3;
586 break;
587
588 case UWOP_EPILOG:
589 i += 1;
590 break;
591
592 case UWOP_SPARE_CODE:
593 ASSERT(FALSE);
594 i += 2;
595 break;
596
597 case UWOP_SAVE_XMM128:
598 Reg = UnwindCode.OpInfo;
599 Offset = UnwindInfo->UnwindCode[i + 1].FrameOffset;
600 SetXmmRegFromStackValue(Context, ContextPointers, Reg, (M128A*)Context->Rsp + Offset);
601 i += 2;
602 break;
603
605 Reg = UnwindCode.OpInfo;
606 Offset = *(ULONG*)(&UnwindInfo->UnwindCode[i + 1]);
607 SetXmmRegFromStackValue(Context, ContextPointers, Reg, (M128A*)Context->Rsp + Offset);
608 i += 3;
609 break;
610
612 /* OpInfo is 1, when an error code was pushed, otherwise 0. */
613 Context->Rsp += UnwindCode.OpInfo * sizeof(DWORD64);
614
615 /* Now pop the MACHINE_FRAME (RIP/RSP only. And yes, "magic numbers", deal with it) */
616 Context->Rip = *(PDWORD64)(Context->Rsp + 0x00);
617 Context->Rsp = *(PDWORD64)(Context->Rsp + 0x18);
618 ASSERT((i + 1) == UnwindInfo->CountOfCodes);
619 goto Exit;
620 }
621 }
622
623 /* Check for chained info */
624 if (UnwindInfo->Flags & UNW_FLAG_CHAININFO)
625 {
626 /* See https://docs.microsoft.com/en-us/cpp/build/exception-handling-x64?view=msvc-160#chained-unwind-info-structures */
627 FunctionEntry = (PRUNTIME_FUNCTION)&(UnwindInfo->UnwindCode[(UnwindInfo->CountOfCodes + 1) & ~1]);
628 UnwindInfo = RVA(ImageBase, FunctionEntry->UnwindData);
629 i = 0;
630 goto RepeatChainedInfo;
631 }
632
633 /* Unwind is finished, pop new Rip from Stack */
634 if (Context->Rsp != 0)
635 {
636 Context->Rip = *(DWORD64*)Context->Rsp;
637 Context->Rsp += sizeof(DWORD64);
638 }
639
640Exit:
641
642 /* Check if we have a handler and return it */
643 if (UnwindInfo->Flags & (HandlerType & (UNW_FLAG_EHANDLER | UNW_FLAG_UHANDLER)))
644 {
645 *HandlerData = (LanguageHandler + 1);
646 return RVA(ImageBase, *LanguageHandler);
647 }
648
649 return NULL;
650}
651
664NTAPI
666 _In_opt_ PVOID TargetFrame,
667 _In_opt_ PVOID TargetIp,
668 _In_ PEXCEPTION_RECORD ExceptionRecord,
671 _In_opt_ struct _UNWIND_HISTORY_TABLE *HistoryTable,
673{
675 PEXCEPTION_ROUTINE ExceptionRoutine;
677 PRUNTIME_FUNCTION FunctionEntry;
678 ULONG_PTR StackLow, StackHigh;
679 ULONG64 ImageBase, EstablisherFrame;
680 CONTEXT UnwindContext;
681
682 /* Get the current stack limits and registration frame */
683 RtlpGetStackLimits(&StackLow, &StackHigh);
684
685 /* If we have a target frame, then this is our high limit */
686 if (TargetFrame != NULL)
687 {
688 StackHigh = (ULONG64)TargetFrame + 1;
689 }
690
691 /* Copy the context */
692 UnwindContext = *ContextRecord;
693
694 /* Set up the constant fields of the dispatcher context */
695 DispatcherContext.ContextRecord = &UnwindContext;
696 DispatcherContext.HistoryTable = HistoryTable;
697 DispatcherContext.TargetIp = (ULONG64)TargetIp;
698
699 /* Start looping */
700 while (TRUE)
701 {
702 /* Lookup the FunctionEntry for the current RIP */
703 FunctionEntry = RtlLookupFunctionEntry(UnwindContext.Rip, &ImageBase, NULL);
704 if (FunctionEntry == NULL)
705 {
706 /* No function entry, so this must be a leaf function. Pop the return address from the stack.
707 Note: this can happen after the first frame as the result of an exception */
708 UnwindContext.Rip = *(DWORD64*)UnwindContext.Rsp;
709 UnwindContext.Rsp += sizeof(DWORD64);
710
711 /* Copy the context back for the next iteration */
712 *ContextRecord = UnwindContext;
713 continue;
714 }
715
716 /* Save Rip before the virtual unwind */
717 DispatcherContext.ControlPc = UnwindContext.Rip;
718
719 /* Do a virtual unwind to get the next frame */
720 ExceptionRoutine = RtlVirtualUnwind(HandlerType,
721 ImageBase,
722 UnwindContext.Rip,
723 FunctionEntry,
724 &UnwindContext,
725 &DispatcherContext.HandlerData,
727 NULL);
728
729 /* Check, if we are still within the stack boundaries */
730 if ((EstablisherFrame < StackLow) ||
731 (EstablisherFrame >= StackHigh) ||
732 (EstablisherFrame & 7))
733 {
735
736 /* If we are handling an exception, we are done here. */
738 {
739 ExceptionRecord->ExceptionFlags |= EXCEPTION_STACK_INVALID;
740 return FALSE;
741 }
742
743 __debugbreak();
745 }
746
747 /* Check if we have an exception routine */
748 if (ExceptionRoutine != NULL)
749 {
750 /* Check if this is the target frame */
751 if (EstablisherFrame == (ULONG64)TargetFrame)
752 {
753 /* Set flag to inform the language handler */
754 ExceptionRecord->ExceptionFlags |= EXCEPTION_TARGET_UNWIND;
755 }
756
757 /* Log the exception if it's enabled */
758 RtlpCheckLogException(ExceptionRecord,
761 sizeof(DispatcherContext));
762
763 /* Set up the variable fields of the dispatcher context */
764 DispatcherContext.ImageBase = ImageBase;
765 DispatcherContext.FunctionEntry = FunctionEntry;
766 DispatcherContext.LanguageHandler = ExceptionRoutine;
767 DispatcherContext.EstablisherFrame = EstablisherFrame;
768 DispatcherContext.ScopeIndex = 0;
769
770 /* Store the return value in the unwind context */
771 UnwindContext.Rax = (ULONG64)ReturnValue;
772
773 /* Loop all nested handlers */
774 do
775 {
777 /* Call the language specific handler */
778 Disposition = ExceptionRoutine(ExceptionRecord,
782
783 /* Clear exception flags for the next iteration */
784 ExceptionRecord->ExceptionFlags &= ~(EXCEPTION_TARGET_UNWIND |
786
787 /* Check if we do exception handling */
789 {
791 {
792 /* Check if it was non-continuable */
793 if (ExceptionRecord->ExceptionFlags & EXCEPTION_NONCONTINUABLE)
794 {
795 __debugbreak();
797 }
798
799 /* Execution continues */
800 return TRUE;
801 }
803 {
805 __debugbreak();
806 }
807 }
808
810 {
812 __debugbreak();
813 }
814
815 /* This must be ExceptionContinueSearch now */
817 {
818 __debugbreak();
820 }
821 } while (ExceptionRecord->ExceptionFlags & EXCEPTION_COLLIDED_UNWIND);
822 }
823
824 /* Check, if we have left our stack (8.) */
825 if ((EstablisherFrame < StackLow) ||
826 (EstablisherFrame > StackHigh) ||
827 (EstablisherFrame & 7))
828 {
830 __debugbreak();
831
832 if (UnwindContext.Rip == ContextRecord->Rip)
833 {
835 }
836 else
837 {
838 ZwRaiseException(ExceptionRecord, ContextRecord, FALSE);
839 }
840 }
841
842 if (EstablisherFrame == (ULONG64)TargetFrame)
843 {
844 break;
845 }
846
847 /* We have successfully unwound a frame. Copy the unwind context back. */
848 *ContextRecord = UnwindContext;
849 }
850
851 if (ExceptionRecord->ExceptionCode != STATUS_UNWIND_CONSOLIDATE)
852 {
853 ContextRecord->Rip = (ULONG64)TargetIp;
854 }
855
856 /* Set the return value */
858
859 /* Restore the context */
860 RtlRestoreContext(ContextRecord, ExceptionRecord);
861
862 /* Should never get here! */
863 ASSERT(FALSE);
864 return FALSE;
865}
866
867VOID
868NTAPI
870 _In_opt_ PVOID TargetFrame,
871 _In_opt_ PVOID TargetIp,
872 _In_opt_ PEXCEPTION_RECORD ExceptionRecord,
875 _In_opt_ struct _UNWIND_HISTORY_TABLE *HistoryTable)
876{
877 EXCEPTION_RECORD LocalExceptionRecord;
878
879 /* Capture the current context */
881
882 /* Check if we have an exception record */
883 if (ExceptionRecord == NULL)
884 {
885 /* No exception record was passed, so set up a local one */
886 LocalExceptionRecord.ExceptionCode = STATUS_UNWIND;
887 LocalExceptionRecord.ExceptionAddress = (PVOID)ContextRecord->Rip;
888 LocalExceptionRecord.ExceptionRecord = NULL;
889 LocalExceptionRecord.NumberParameters = 0;
890 ExceptionRecord = &LocalExceptionRecord;
891 }
892
893 /* Set unwind flags */
894 ExceptionRecord->ExceptionFlags = EXCEPTION_UNWINDING;
895 if (TargetFrame == NULL)
896 {
897 ExceptionRecord->ExceptionFlags |= EXCEPTION_EXIT_UNWIND;
898 }
899
900 /* Call the internal function */
901 RtlpUnwindInternal(TargetFrame,
902 TargetIp,
903 ExceptionRecord,
906 HistoryTable,
908}
909
910VOID
911NTAPI
913 _In_opt_ PVOID TargetFrame,
914 _In_opt_ PVOID TargetIp,
915 _In_opt_ PEXCEPTION_RECORD ExceptionRecord,
917{
919
920 RtlUnwindEx(TargetFrame,
921 TargetIp,
922 ExceptionRecord,
924 &Context,
925 NULL);
926}
927
928ULONG
929NTAPI
931 IN ULONG Count,
932 IN ULONG Flags)
933{
935 ULONG64 ControlPc, ImageBase, EstablisherFrame;
936 ULONG64 StackLow, StackHigh;
937 PVOID HandlerData;
938 ULONG i, FramesToSkip;
939 PRUNTIME_FUNCTION FunctionEntry;
940
941 DPRINT("Enter RtlWalkFrameChain\n");
942
943 /* The upper bits in Flags define how many frames to skip */
944 FramesToSkip = Flags >> 8;
945
946 /* Capture the current Context */
948 ControlPc = Context.Rip;
949
950 /* Get the stack limits */
951 RtlpGetStackLimits(&StackLow, &StackHigh);
952
953 /* Check if we want the user-mode stack frame */
954 if (Flags & 1)
955 {
956 }
957
959 {
960 /* Loop the frames */
961 for (i = 0; i < FramesToSkip + Count; i++)
962 {
963 /* Lookup the FunctionEntry for the current ControlPc */
964 FunctionEntry = RtlLookupFunctionEntry(ControlPc, &ImageBase, NULL);
965
966 /* Is this a leaf function? */
967 if (!FunctionEntry)
968 {
969 Context.Rip = *(DWORD64*)Context.Rsp;
970 Context.Rsp += sizeof(DWORD64);
971 DPRINT("leaf funtion, new Rip = %p, new Rsp = %p\n", (PVOID)Context.Rip, (PVOID)Context.Rsp);
972 }
973 else
974 {
976 ImageBase,
977 ControlPc,
978 FunctionEntry,
979 &Context,
980 &HandlerData,
982 NULL);
983 DPRINT("normal funtion, new Rip = %p, new Rsp = %p\n", (PVOID)Context.Rip, (PVOID)Context.Rsp);
984 }
985
986 /* Check if we are in kernel mode */
987 if (RtlpGetMode() == KernelMode)
988 {
989 /* Check if we left the kernel range */
990 if (!(Flags & 1) && (Context.Rip < 0xFFFF800000000000ULL))
991 {
992 break;
993 }
994 }
995 else
996 {
997 /* Check if we left the user range */
998 if ((Context.Rip < 0x10000) ||
999 (Context.Rip > 0x000007FFFFFEFFFFULL))
1000 {
1001 break;
1002 }
1003 }
1004
1005 /* Check, if we have left our stack */
1006 if ((Context.Rsp <= StackLow) || (Context.Rsp >= StackHigh))
1007 {
1008 break;
1009 }
1010
1011 /* Continue with new Rip */
1012 ControlPc = Context.Rip;
1013
1014 /* Save value, if we are past the frames to skip */
1015 if (i >= FramesToSkip)
1016 {
1017 Callers[i - FramesToSkip] = (PVOID)ControlPc;
1018 }
1019 }
1020 }
1022 {
1023 DPRINT1("Exception while getting callers!\n");
1024 i = 0;
1025 }
1026 _SEH2_END;
1027
1028 DPRINT("RtlWalkFrameChain returns %ld\n", i);
1029 return i;
1030}
1031
1035#undef RtlGetCallersAddress
1036VOID
1037NTAPI
1039 OUT PVOID *CallersAddress,
1040 OUT PVOID *CallersCaller )
1041{
1042 PVOID Callers[4];
1043 ULONG Number;
1044
1045 /* Get callers:
1046 * RtlWalkFrameChain -> RtlGetCallersAddress -> x -> y */
1047 Number = RtlWalkFrameChain(Callers, 4, 0);
1048
1049 *CallersAddress = (Number >= 3) ? Callers[2] : NULL;
1050 *CallersCaller = (Number == 4) ? Callers[3] : NULL;
1051
1052 return;
1053}
1054
1055static
1056VOID
1058 _Out_ PKNONVOLATILE_CONTEXT_POINTERS NonvolatileContextPointers,
1059 _In_ ULONG64 TargetFrame)
1060{
1062 PRUNTIME_FUNCTION FunctionEntry;
1063 ULONG64 ImageBase;
1064 PVOID HandlerData;
1066
1067 /* Zero out the nonvolatile context pointers */
1068 RtlZeroMemory(NonvolatileContextPointers, sizeof(*NonvolatileContextPointers));
1069
1070 /* Capture the current context */
1072
1073 do
1074 {
1075 /* Make sure nothing fishy is going on. Currently this is for kernel mode only. */
1076 ASSERT((LONG64)Context.Rip < 0);
1077 ASSERT((LONG64)Context.Rsp < 0);
1078
1079 /* Look up the function entry */
1080 FunctionEntry = RtlLookupFunctionEntry(Context.Rip, &ImageBase, NULL);
1081 if (FunctionEntry != NULL)
1082 {
1083 /* Do a virtual unwind to the caller and capture saved non-volatiles */
1085 ImageBase,
1086 Context.Rip,
1087 FunctionEntry,
1088 &Context,
1089 &HandlerData,
1091 NonvolatileContextPointers);
1092
1094 }
1095 else
1096 {
1097 Context.Rip = *(PULONG64)Context.Rsp;
1098 Context.Rsp += 8;
1099 }
1100
1101 /* Continue until we reach user mode */
1102 } while ((LONG64)Context.Rip < 0);
1103
1104 /* If the caller did the right thing, we should get past the target frame */
1105 ASSERT(EstablisherFrame >= TargetFrame);
1106}
1107
1108VOID
1111 _In_ DWORD64 TargetFrame)
1112{
1113 KNONVOLATILE_CONTEXT_POINTERS ContextPointers;
1114
1115 /* Capture pointers to the non-volatiles up to the target frame */
1116 RtlpCaptureNonVolatileContextPointers(&ContextPointers, TargetFrame);
1117
1118 /* Copy the nonvolatiles to the captured locations */
1119 *ContextPointers.R12 = Context->R12;
1120 *ContextPointers.R13 = Context->R13;
1121 *ContextPointers.R14 = Context->R14;
1122 *ContextPointers.R15 = Context->R15;
1123 *ContextPointers.Xmm6 = Context->Xmm6;
1124 *ContextPointers.Xmm7 = Context->Xmm7;
1125 *ContextPointers.Xmm8 = Context->Xmm8;
1126 *ContextPointers.Xmm9 = Context->Xmm9;
1127 *ContextPointers.Xmm10 = Context->Xmm10;
1128 *ContextPointers.Xmm11 = Context->Xmm11;
1129 *ContextPointers.Xmm12 = Context->Xmm12;
1130 *ContextPointers.Xmm13 = Context->Xmm13;
1131 *ContextPointers.Xmm14 = Context->Xmm14;
1132 *ContextPointers.Xmm15 = Context->Xmm15;
1133}
1134
1135VOID
1138
1139VOID
1142 _In_ PEXCEPTION_RECORD ExceptionRecord)
1143{
1144 if (ExceptionRecord != NULL)
1145 {
1146 if ((ExceptionRecord->ExceptionCode == STATUS_UNWIND_CONSOLIDATE) &&
1147 (ExceptionRecord->NumberParameters >= 1))
1148 {
1149 PVOID (*Consolidate)(EXCEPTION_RECORD*) = (PVOID)ExceptionRecord->ExceptionInformation[0];
1150 // FIXME: This should be called through an asm wrapper to allow handling recursive unwinding
1151 ContextRecord->Rip = (ULONG64)Consolidate(ExceptionRecord);
1152 }
1153 }
1154
1156}
unsigned char BOOLEAN
UINT32 void void ** ReturnValue
Definition: acevents.h:216
ACPI_PHYSICAL_ADDRESS ACPI_SIZE BOOLEAN Warn UINT32 *TableIdx UINT32 ACPI_TABLE_HEADER *OutTableHeader ACPI_TABLE_HEADER **OutTable ACPI_HANDLE UINT32 ACPI_WALK_CALLBACK ACPI_WALK_CALLBACK void void **ReturnValue UINT32 ACPI_BUFFER *RetPathPtr ACPI_OBJECT_HANDLER void *Data ACPI_OBJECT_HANDLER void **Data ACPI_STRING ACPI_OBJECT_LIST ACPI_BUFFER *ReturnObjectBuffer ACPI_DEVICE_INFO **ReturnBuffer ACPI_HANDLE ACPI_HANDLE ACPI_HANDLE *OutHandle ACPI_HANDLE *OutHandle void *Context void *Context ACPI_EVENT_HANDLER Handler UINT32 UINT32 ACPI_GPE_HANDLER void *Context UINT32 HandlerType
Definition: acpixf.h:817
#define DPRINT1
Definition: precomp.h:8
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
VOID NTAPI RtlpCheckLogException(IN PEXCEPTION_RECORD ExceptionRecord, IN PCONTEXT ContextRecord, IN PVOID ContextData, IN ULONG Size)
Definition: libsupp.c:201
KPROCESSOR_MODE NTAPI RtlpGetMode(VOID)
Definition: libsupp.c:53
PVOID NTAPI RtlPcToFileHeader(IN PVOID PcValue, PVOID *BaseOfImage)
Definition: libsupp.c:656
VOID NTAPI RtlpGetStackLimits(OUT PULONG_PTR LowLimit, OUT PULONG_PTR HighLimit)
Definition: libsupp.c:335
@ ExceptionContinueSearch
Definition: compat.h:91
@ ExceptionCollidedUnwind
Definition: compat.h:93
@ ExceptionNestedException
Definition: compat.h:92
@ ExceptionContinueExecution
Definition: compat.h:90
EXCEPTION_ROUTINE * PEXCEPTION_ROUTINE
Definition: compat.h:709
#define RtlImageDirectoryEntryToData
Definition: compat.h:809
enum _EXCEPTION_DISPOSITION EXCEPTION_DISPOSITION
#define _SEH2_END
Definition: filesup.c:22
#define _SEH2_TRY
Definition: filesup.c:19
unsigned long DWORD
Definition: ntddk_ex.h:95
#define RVA(m, b)
Definition: freeldr.h:28
ASMGENDATA Table[]
Definition: genincdata.c:61
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define UNW_FLAG_NHANDLER
Definition: gs_support.c:32
#define EXCEPTION_EXECUTE_HANDLER
Definition: excpt.h:85
void __cdecl __debugbreak(void)
Definition: intrin_ppc.h:698
#define ASSERT(a)
Definition: mode.c:44
unsigned __int64 * PULONG64
Definition: imports.h:198
unsigned __int64 ULONG64
Definition: imports.h:198
#define _Inout_
Definition: ms_sal.h:378
#define _Outptr_
Definition: ms_sal.h:427
#define _Inout_opt_
Definition: ms_sal.h:379
#define _Out_
Definition: ms_sal.h:345
#define _In_
Definition: ms_sal.h:308
#define _In_opt_
Definition: ms_sal.h:309
#define KernelMode
Definition: asm.h:34
_In_ ACCESS_MASK _In_ POBJECT_ATTRIBUTES _Reserved_ ULONG _In_opt_ PUNICODE_STRING _In_ ULONG _Out_opt_ PULONG Disposition
Definition: cmfuncs.h:56
NTSYSAPI NTSTATUS NTAPI ZwRaiseException(_In_ PEXCEPTION_RECORD ExceptionRecord, _In_ PCONTEXT Context, _In_ BOOLEAN SearchFrames)
DECLSPEC_NORETURN NTSYSAPI VOID NTAPI RtlRaiseStatus(_In_ NTSTATUS Status)
NTSYSAPI VOID NTAPI RtlCaptureContext(_Out_ PCONTEXT ContextRecord)
int Count
Definition: noreturn.cpp:7
_IRQL_requires_same_ _In_ PVOID EstablisherFrame
Definition: ntbasedef.h:653
_IRQL_requires_same_ _In_ PVOID _Inout_ struct _CONTEXT * ContextRecord
Definition: ntbasedef.h:654
_IRQL_requires_same_ _In_ PVOID _Inout_ struct _CONTEXT _In_ PVOID DispatcherContext
Definition: ntbasedef.h:655
_In_ ULONG _In_ ULONG Offset
Definition: ntddpcm.h:101
_In_ ULONG _In_ ULONG _In_ ULONG Length
Definition: ntddpcm.h:102
_In_opt_ PENTER_STATE_SYSTEM_HANDLER _In_opt_ PVOID _In_ LONG _In_opt_ LONG volatile * Number
Definition: ntpoapi.h:207
#define STATUS_INVALID_DISPOSITION
Definition: ntstatus.h:275
#define STATUS_UNWIND
Definition: ntstatus.h:276
#define STATUS_UNWIND_CONSOLIDATE
Definition: ntstatus.h:220
#define STATUS_BAD_FUNCTION_TABLE
Definition: ntstatus.h:491
#define STATUS_BAD_STACK
Definition: ntstatus.h:277
#define IMAGE_DIRECTORY_ENTRY_EXCEPTION
Definition: pedump.c:262
long LONG
Definition: pedump.c:60
unsigned short USHORT
Definition: pedump.c:61
#define _SEH2_EXCEPT(...)
Definition: pseh2_64.h:34
@ UNW_FLAG_EHANDLER
Definition: rsym64.h:109
@ UNW_FLAG_CHAININFO
Definition: rsym64.h:111
@ UNW_FLAG_UHANDLER
Definition: rsym64.h:110
unsigned char UBYTE
Definition: rsym64.h:4
struct _RUNTIME_FUNCTION * PRUNTIME_FUNCTION
struct _RUNTIME_FUNCTION RUNTIME_FUNCTION
#define DPRINT
Definition: sndvol32.h:71
static void Exit(void)
Definition: sock.c:1330
struct _EXCEPTION_RECORD * ExceptionRecord
Definition: compat.h:210
DWORD ExceptionCode
Definition: compat.h:208
DWORD NumberParameters
Definition: compat.h:212
DWORD ExceptionFlags
Definition: compat.h:209
PVOID ExceptionAddress
Definition: compat.h:211
UBYTE CountOfCodes
Definition: unwind.c:55
UBYTE FrameRegister
Definition: unwind.c:56
UBYTE Version
Definition: unwind.c:52
UBYTE SizeOfProlog
Definition: unwind.c:54
UNWIND_CODE UnwindCode[1]
Definition: cpu_x86_64.c:68
UBYTE FrameOffset
Definition: unwind.c:57
UBYTE Flags
Definition: unwind.c:53
#define EXCEPTION_NONCONTINUABLE
Definition: stubs.h:23
uint64_t * PDWORD64
Definition: typedefs.h:67
uint32_t * PULONG
Definition: typedefs.h:59
int64_t LONG64
Definition: typedefs.h:68
uint64_t DWORD64
Definition: typedefs.h:67
#define NTAPI
Definition: typedefs.h:36
void * PVOID
Definition: typedefs.h:50
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
uint32_t ULONG_PTR
Definition: typedefs.h:65
#define IN
Definition: typedefs.h:39
uint32_t ULONG
Definition: typedefs.h:59
#define OUT
Definition: typedefs.h:40
#define ALIGN_UP_POINTER_BY(ptr, align)
Definition: umtypes.h:85
BYTE UnwindOp
Definition: cpu_x86_64.c:54
BYTE CodeOffset
Definition: cpu_x86_64.c:53
USHORT FrameOffset
Definition: cpu_x86_64.c:57
UBYTE UnwindOp
Definition: unwind.c:44
UBYTE OpInfo
Definition: unwind.c:45
UBYTE CodeOffset
Definition: unwind.c:43
PEXCEPTION_ROUTINE NTAPI RtlVirtualUnwind(_In_ ULONG HandlerType, _In_ ULONG64 ImageBase, _In_ ULONG64 ControlPc, _In_ PRUNTIME_FUNCTION FunctionEntry, _Inout_ PCONTEXT Context, _Outptr_ PVOID *HandlerData, _Out_ PULONG64 EstablisherFrame, _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers)
Definition: unwind.c:478
static __inline M128A GetXmmReg(PCONTEXT Context, BYTE Reg)
Definition: unwind.c:286
VOID NTAPI RtlGetCallersAddress(OUT PVOID *CallersAddress, OUT PVOID *CallersCaller)
Definition: unwind.c:1038
BOOLEAN NTAPI RtlpUnwindInternal(_In_opt_ PVOID TargetFrame, _In_opt_ PVOID TargetIp, _In_ PEXCEPTION_RECORD ExceptionRecord, _In_ PVOID ReturnValue, _In_ PCONTEXT ContextRecord, _In_opt_ struct _UNWIND_HISTORY_TABLE *HistoryTable, _In_ ULONG HandlerType)
Definition: unwind.c:665
#define UWOP_EPILOG
Definition: unwind.c:29
unsigned char UBYTE
Definition: unwind.c:37
static __inline void PopReg(_Inout_ PCONTEXT Context, _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers, _In_ BYTE Reg)
Definition: unwind.c:247
VOID NTAPI RtlUnwind(_In_opt_ PVOID TargetFrame, _In_opt_ PVOID TargetIp, _In_opt_ PEXCEPTION_RECORD ExceptionRecord, _In_ PVOID ReturnValue)
Definition: unwind.c:912
VOID RtlRestoreContext(_In_ PCONTEXT ContextRecord, _In_ PEXCEPTION_RECORD ExceptionRecord)
Definition: unwind.c:1140
#define UWOP_SAVE_NONVOL
Definition: unwind.c:23
static VOID RtlpCaptureNonVolatileContextPointers(_Out_ PKNONVOLATILE_CONTEXT_POINTERS NonvolatileContextPointers, _In_ ULONG64 TargetFrame)
Definition: unwind.c:1057
VOID NTAPI RtlUnwindEx(_In_opt_ PVOID TargetFrame, _In_opt_ PVOID TargetIp, _In_opt_ PEXCEPTION_RECORD ExceptionRecord, _In_ PVOID ReturnValue, _In_ PCONTEXT ContextRecord, _In_opt_ struct _UNWIND_HISTORY_TABLE *HistoryTable)
Definition: unwind.c:869
union _UNWIND_CODE UNWIND_CODE
#define UWOP_SPARE_CODE
Definition: unwind.c:30
static ULONG64 GetEstablisherFrame(_In_ PCONTEXT Context, _In_ PUNWIND_INFO UnwindInfo, _In_ ULONG_PTR CodeOffset)
Definition: unwind.c:433
struct _UNWIND_INFO * PUNWIND_INFO
#define UWOP_SAVE_NONVOL_FAR
Definition: unwind.c:24
ULONG NTAPI RtlWalkFrameChain(OUT PVOID *Callers, IN ULONG Count, IN ULONG Flags)
Definition: unwind.c:930
PRUNTIME_FUNCTION NTAPI RtlpLookupDynamicFunctionEntry(_In_ DWORD64 ControlPc, _Out_ PDWORD64 ImageBase, _In_ PUNWIND_HISTORY_TABLE HistoryTable)
Definition: dynfntbl.c:271
static __inline void SetXmmReg(_Inout_ PCONTEXT Context, _In_ BYTE Reg, _In_ M128A Value)
Definition: unwind.c:259
static __inline void SetReg(_Inout_ PCONTEXT Context, _In_ BYTE Reg, _In_ DWORD64 Value)
Definition: unwind.c:210
static __inline void SetRegFromStackValue(_Inout_ PCONTEXT Context, _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers, _In_ BYTE Reg, _In_ PDWORD64 ValuePointer)
Definition: unwind.c:221
PRUNTIME_FUNCTION NTAPI RtlLookupFunctionEntry(IN DWORD64 ControlPc, OUT PDWORD64 ImageBase, OUT PUNWIND_HISTORY_TABLE HistoryTable)
Locates the RUNTIME_FUNCTION entry corresponding to a code address. http://msdn.microsoft....
Definition: unwind.c:124
static __inline ULONG UnwindOpSlots(_In_ UNWIND_CODE UnwindCode)
Definition: unwind.c:177
#define UWOP_PUSH_MACHFRAME
Definition: unwind.c:34
#define UWOP_ALLOC_LARGE
Definition: unwind.c:20
struct _UNWIND_INFO UNWIND_INFO
static __inline DWORD64 GetReg(_In_ PCONTEXT Context, _In_ BYTE Reg)
Definition: unwind.c:237
union _UNWIND_CODE * PUNWIND_CODE
static __inline BOOLEAN RtlpTryToUnwindEpilog(_Inout_ PCONTEXT Context, _In_ ULONG64 ControlPc, _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers, _In_ ULONG64 ImageBase, _In_ PRUNTIME_FUNCTION FunctionEntry)
Helper function that tries to unwind epilog instructions.
Definition: unwind.c:304
#define UWOP_ALLOC_SMALL
Definition: unwind.c:21
VOID RtlpRestoreContextInternal(_In_ PCONTEXT ContextRecord)
#define UWOP_SAVE_XMM128
Definition: unwind.c:32
static __inline void SetXmmRegFromStackValue(_Out_ PCONTEXT Context, _Inout_opt_ PKNONVOLATILE_CONTEXT_POINTERS ContextPointers, _In_ BYTE Reg, _In_ M128A *ValuePointer)
Definition: unwind.c:270
#define UWOP_SAVE_XMM128_FAR
Definition: unwind.c:33
VOID RtlSetUnwindContext(_In_ PCONTEXT Context, _In_ DWORD64 TargetFrame)
Definition: unwind.c:1109
PRUNTIME_FUNCTION NTAPI RtlLookupFunctionTable(IN DWORD64 ControlPc, OUT PDWORD64 ImageBase, OUT PULONG Length)
Locates the table of RUNTIME_FUNCTION entries for a code address.
Definition: unwind.c:82
#define UWOP_PUSH_NONVOL
Definition: unwind.c:19
#define UWOP_SET_FPREG
Definition: unwind.c:22
_Must_inspect_result_ _In_ WDFDEVICE _In_ PWDF_DEVICE_PROPERTY_DATA _In_ DEVPROPTYPE _In_ ULONG Size
Definition: wdfdevice.h:4533
_Must_inspect_result_ _In_ WDFKEY _In_ PCUNICODE_STRING _Out_opt_ PUSHORT _Inout_opt_ PUNICODE_STRING Value
Definition: wdfregistry.h:413
#define EXCEPTION_NONCONTINUABLE_EXCEPTION
Definition: winbase.h:328
static WLX_DISPATCH_VERSION_1_4 FunctionTable
Definition: wlx.c:722
_Must_inspect_result_ _In_ ULONG Flags
Definition: wsk.h:170
M128A
Definition: ketypes.h:937
#define EXCEPTION_EXIT_UNWIND
Definition: rtltypes.h:156
#define EXCEPTION_STACK_INVALID
Definition: rtltypes.h:157
#define EXCEPTION_UNWINDING
Definition: rtltypes.h:155
#define EXCEPTION_TARGET_UNWIND
Definition: rtltypes.h:159
#define EXCEPTION_COLLIDED_UNWIND
Definition: rtltypes.h:160
unsigned char UCHAR
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char CHAR
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unsigned char BYTE
Definition: xxhash.c:193