ReactOS 0.4.16-dev-747-gbc52d5f
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
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
209void
212 _In_ BYTE Reg,
214{
215 ((DWORD64*)(&Context->Rax))[Reg] = Value;
216}
217
218static
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
239 _In_ BYTE Reg)
240{
241 return ((DWORD64*)(&Context->Rax))[Reg];
242}
243
244static
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
258void
261 _In_ BYTE Reg,
263{
264 ((M128A*)(&Context->Xmm0))[Reg] = Value;
265}
266
267static
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
285M128A
287{
288 return ((M128A*)(&Context->Xmm0))[Reg];
289}
290
301static
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
652static __inline
653BOOL
655 _In_ ULONG64 StackPointer,
656 _In_ ULONG64 LowLimit,
658{
659 return (StackPointer >= LowLimit) &&
660 (StackPointer < HighLimit) &&
661 ((StackPointer & 7) == 0);
662}
663
676NTAPI
678 _In_opt_ PVOID TargetFrame,
679 _In_opt_ PVOID TargetIp,
680 _In_ PEXCEPTION_RECORD ExceptionRecord,
683 _In_opt_ struct _UNWIND_HISTORY_TABLE *HistoryTable,
685{
687 PEXCEPTION_ROUTINE ExceptionRoutine;
689 PRUNTIME_FUNCTION FunctionEntry;
690 ULONG_PTR StackLow, StackHigh;
691 ULONG64 ImageBase, EstablisherFrame;
692 CONTEXT UnwindContext;
693
694 /* Get the current stack limits */
695 RtlpGetStackLimits(&StackLow, &StackHigh);
696
697 /* If we have a target frame, then this is our high limit */
698 if (TargetFrame != NULL)
699 {
700 StackHigh = (ULONG64)TargetFrame + 1;
701 }
702
703 /* Copy the context */
704 UnwindContext = *ContextRecord;
705
706 /* Set up the constant fields of the dispatcher context */
707 DispatcherContext.ContextRecord = &UnwindContext;
708 DispatcherContext.HistoryTable = HistoryTable;
709 DispatcherContext.TargetIp = (ULONG64)TargetIp;
710
711 /* Start looping */
712 while (TRUE)
713 {
714 if (!RtlpIsStackPointerValid(UnwindContext.Rsp, StackLow, StackHigh))
715 {
716 return FALSE;
717 }
718
719 /* Lookup the FunctionEntry for the current RIP */
720 FunctionEntry = RtlLookupFunctionEntry(UnwindContext.Rip, &ImageBase, NULL);
721 if (FunctionEntry == NULL)
722 {
723 /* No function entry, so this must be a leaf function. Pop the return address from the stack.
724 Note: this can happen after the first frame as the result of an exception */
725 UnwindContext.Rip = *(DWORD64*)UnwindContext.Rsp;
726 UnwindContext.Rsp += sizeof(DWORD64);
727
729 {
730 /* Copy the context back for the next iteration */
731 *ContextRecord = UnwindContext;
732 }
733 continue;
734 }
735
736 /* Save Rip before the virtual unwind */
737 DispatcherContext.ControlPc = UnwindContext.Rip;
738
739 /* Do a virtual unwind to get the next frame */
740 ExceptionRoutine = RtlVirtualUnwind(HandlerType,
741 ImageBase,
742 UnwindContext.Rip,
743 FunctionEntry,
744 &UnwindContext,
745 &DispatcherContext.HandlerData,
747 NULL);
748
749 /* Check, if we are still within the stack boundaries */
750 if ((EstablisherFrame < StackLow) ||
751 (EstablisherFrame >= StackHigh) ||
752 (EstablisherFrame & 7))
753 {
755
756 /* If we are handling an exception, we are done here. */
758 {
759 ExceptionRecord->ExceptionFlags |= EXCEPTION_STACK_INVALID;
760 return FALSE;
761 }
762
763 __debugbreak();
765 }
766
767 /* Check if we have an exception routine */
768 if (ExceptionRoutine != NULL)
769 {
770 /* Check if this is the target frame */
771 if (EstablisherFrame == (ULONG64)TargetFrame)
772 {
773 /* Set flag to inform the language handler */
774 ExceptionRecord->ExceptionFlags |= EXCEPTION_TARGET_UNWIND;
775 }
776
777 /* Log the exception if it's enabled */
778 RtlpCheckLogException(ExceptionRecord,
779 &UnwindContext,
781 sizeof(DispatcherContext));
782
783 /* Set up the variable fields of the dispatcher context */
784 DispatcherContext.ImageBase = ImageBase;
785 DispatcherContext.FunctionEntry = FunctionEntry;
786 DispatcherContext.LanguageHandler = ExceptionRoutine;
787 DispatcherContext.EstablisherFrame = EstablisherFrame;
788 DispatcherContext.ScopeIndex = 0;
789
790 /* Store the return value in the unwind context */
791 UnwindContext.Rax = (ULONG64)ReturnValue;
792
793 /* Loop all nested handlers */
794 do
795 {
797 /* Call the language specific handler */
798 Disposition = ExceptionRoutine(ExceptionRecord,
802
803 /* Clear exception flags for the next iteration */
804 ExceptionRecord->ExceptionFlags &= ~(EXCEPTION_TARGET_UNWIND |
806
807 /* Check if we do exception handling */
809 {
811 {
812 /* Check if it was non-continuable */
813 if (ExceptionRecord->ExceptionFlags & EXCEPTION_NONCONTINUABLE)
814 {
815 __debugbreak();
817 }
818
819 /* Execution continues */
820 return TRUE;
821 }
823 {
825 __debugbreak();
826 }
827 }
828
830 {
832 __debugbreak();
833 }
834
835 /* This must be ExceptionContinueSearch now */
837 {
838 __debugbreak();
840 }
841 } while (ExceptionRecord->ExceptionFlags & EXCEPTION_COLLIDED_UNWIND);
842 }
843
844 /* Check, if we have left our stack (8.) */
845 if ((EstablisherFrame < StackLow) ||
846 (EstablisherFrame > StackHigh) ||
847 (EstablisherFrame & 7))
848 {
850 __debugbreak();
851
852 if (UnwindContext.Rip == ContextRecord->Rip)
853 {
855 }
856 else
857 {
858 ZwRaiseException(ExceptionRecord, ContextRecord, FALSE);
859 }
860 }
861
862 if (EstablisherFrame == (ULONG64)TargetFrame)
863 {
864 break;
865 }
866
868 {
869 /* We have successfully unwound a frame. Copy the unwind context back. */
870 *ContextRecord = UnwindContext;
871 }
872 }
873
874 if (ExceptionRecord->ExceptionCode != STATUS_UNWIND_CONSOLIDATE)
875 {
876 ContextRecord->Rip = (ULONG64)TargetIp;
877 }
878
879 /* Set the return value */
881
882 /* Restore the context */
883 RtlRestoreContext(ContextRecord, ExceptionRecord);
884
885 /* Should never get here! */
886 ASSERT(FALSE);
887 return FALSE;
888}
889
890VOID
891NTAPI
893 _In_opt_ PVOID TargetFrame,
894 _In_opt_ PVOID TargetIp,
895 _In_opt_ PEXCEPTION_RECORD ExceptionRecord,
898 _In_opt_ struct _UNWIND_HISTORY_TABLE *HistoryTable)
899{
900 EXCEPTION_RECORD LocalExceptionRecord;
901
902 /* Capture the current context */
904
905 /* Check if we have an exception record */
906 if (ExceptionRecord == NULL)
907 {
908 /* No exception record was passed, so set up a local one */
909 LocalExceptionRecord.ExceptionCode = STATUS_UNWIND;
910 LocalExceptionRecord.ExceptionAddress = (PVOID)ContextRecord->Rip;
911 LocalExceptionRecord.ExceptionRecord = NULL;
912 LocalExceptionRecord.NumberParameters = 0;
913 ExceptionRecord = &LocalExceptionRecord;
914 }
915
916 /* Set unwind flags */
917 ExceptionRecord->ExceptionFlags = EXCEPTION_UNWINDING;
918 if (TargetFrame == NULL)
919 {
920 ExceptionRecord->ExceptionFlags |= EXCEPTION_EXIT_UNWIND;
921 }
922
923 /* Call the internal function */
924 RtlpUnwindInternal(TargetFrame,
925 TargetIp,
926 ExceptionRecord,
929 HistoryTable,
931}
932
933VOID
934NTAPI
936 _In_opt_ PVOID TargetFrame,
937 _In_opt_ PVOID TargetIp,
938 _In_opt_ PEXCEPTION_RECORD ExceptionRecord,
940{
942
943 RtlUnwindEx(TargetFrame,
944 TargetIp,
945 ExceptionRecord,
947 &Context,
948 NULL);
949}
950
951ULONG
952NTAPI
954 IN ULONG Count,
955 IN ULONG Flags)
956{
958 ULONG64 ControlPc, ImageBase, EstablisherFrame;
959 ULONG64 StackLow, StackHigh;
960 PVOID HandlerData;
961 ULONG i, FramesToSkip;
962 PRUNTIME_FUNCTION FunctionEntry;
963 MODE CurrentMode = RtlpGetMode();
964
965 DPRINT("Enter RtlWalkFrameChain\n");
966
967 /* The upper bits in Flags define how many frames to skip */
968 FramesToSkip = Flags >> 8;
969
970 /* Capture the current Context */
972 ControlPc = Context.Rip;
973
974 /* Get the stack limits */
975 RtlpGetStackLimits(&StackLow, &StackHigh);
976
978 {
979 /* Loop the frames */
980 for (i = 0; i < FramesToSkip + Count; i++)
981 {
982 /* Lookup the FunctionEntry for the current ControlPc */
983 FunctionEntry = RtlLookupFunctionEntry(ControlPc, &ImageBase, NULL);
984
985 /* Is this a leaf function? */
986 if (!FunctionEntry)
987 {
988 Context.Rip = *(DWORD64*)Context.Rsp;
989 Context.Rsp += sizeof(DWORD64);
990 DPRINT("leaf funtion, new Rip = %p, new Rsp = %p\n", (PVOID)Context.Rip, (PVOID)Context.Rsp);
991 }
992 else
993 {
995 ImageBase,
996 ControlPc,
997 FunctionEntry,
998 &Context,
999 &HandlerData,
1001 NULL);
1002 DPRINT("normal funtion, new Rip = %p, new Rsp = %p\n", (PVOID)Context.Rip, (PVOID)Context.Rsp);
1003 }
1004
1005 /* Check if we are in kernel mode */
1006 if (CurrentMode == KernelMode)
1007 {
1008 /* Check if we left the kernel range */
1009 if (Context.Rip < 0xFFFF800000000000ULL)
1010 {
1011 /* Bail out, unless user mode was requested */
1012 if ((Flags & 1) == 0)
1013 {
1014 break;
1015 }
1016
1017 /* We are in user mode now, get UM stack bounds */
1018 CurrentMode = UserMode;
1019 StackLow = (ULONG64)NtCurrentTeb()->NtTib.StackLimit;
1020 StackHigh = (ULONG64)NtCurrentTeb()->NtTib.StackBase;
1021 }
1022 }
1023
1024 /* Check (again) if we are in user mode now */
1025 if (CurrentMode == UserMode)
1026 {
1027 /* Check if we left the user range */
1028 if ((Context.Rip < 0x10000) ||
1029 (Context.Rip > 0x000007FFFFFEFFFFULL))
1030 {
1031 break;
1032 }
1033 }
1034
1035 /* Check, if we have left our stack */
1036 if ((Context.Rsp <= StackLow) || (Context.Rsp >= StackHigh))
1037 {
1038 break;
1039 }
1040
1041 /* Continue with new Rip */
1042 ControlPc = Context.Rip;
1043
1044 /* Save value, if we are past the frames to skip */
1045 if (i >= FramesToSkip)
1046 {
1047 Callers[i - FramesToSkip] = (PVOID)ControlPc;
1048 }
1049 }
1050 }
1052 {
1053 DPRINT1("Exception while getting callers!\n");
1054 i = 0;
1055 }
1056 _SEH2_END;
1057
1058 DPRINT("RtlWalkFrameChain returns %ld\n", i);
1059 return i;
1060}
1061
1065#undef RtlGetCallersAddress
1066VOID
1067NTAPI
1069 OUT PVOID *CallersAddress,
1070 OUT PVOID *CallersCaller )
1071{
1072 PVOID Callers[4];
1073 ULONG Number;
1074
1075 /* Get callers:
1076 * RtlWalkFrameChain -> RtlGetCallersAddress -> x -> y */
1077 Number = RtlWalkFrameChain(Callers, 4, 0);
1078
1079 *CallersAddress = (Number >= 3) ? Callers[2] : NULL;
1080 *CallersCaller = (Number == 4) ? Callers[3] : NULL;
1081
1082 return;
1083}
1084
1085static
1086VOID
1088 _Out_ PKNONVOLATILE_CONTEXT_POINTERS NonvolatileContextPointers,
1089 _In_ ULONG64 TargetFrame)
1090{
1092 PRUNTIME_FUNCTION FunctionEntry;
1093 ULONG64 ImageBase;
1094 PVOID HandlerData;
1096
1097 /* Zero out the nonvolatile context pointers */
1098 RtlZeroMemory(NonvolatileContextPointers, sizeof(*NonvolatileContextPointers));
1099
1100 /* Capture the current context */
1102
1103 do
1104 {
1105 /* Make sure nothing fishy is going on. Currently this is for kernel mode only. */
1106 ASSERT((LONG64)Context.Rip < 0);
1107 ASSERT((LONG64)Context.Rsp < 0);
1108
1109 /* Look up the function entry */
1110 FunctionEntry = RtlLookupFunctionEntry(Context.Rip, &ImageBase, NULL);
1111 if (FunctionEntry != NULL)
1112 {
1113 /* Do a virtual unwind to the caller and capture saved non-volatiles */
1115 ImageBase,
1116 Context.Rip,
1117 FunctionEntry,
1118 &Context,
1119 &HandlerData,
1121 NonvolatileContextPointers);
1122
1124 }
1125 else
1126 {
1127 Context.Rip = *(PULONG64)Context.Rsp;
1128 Context.Rsp += 8;
1129 }
1130
1131 /* Continue until we reach user mode */
1132 } while ((LONG64)Context.Rip < 0);
1133
1134 /* If the caller did the right thing, we should get past the target frame */
1135 ASSERT(EstablisherFrame >= TargetFrame);
1136}
1137
1138VOID
1141 _In_ DWORD64 TargetFrame)
1142{
1143 KNONVOLATILE_CONTEXT_POINTERS ContextPointers;
1144
1145 /* Capture pointers to the non-volatiles up to the target frame */
1146 RtlpCaptureNonVolatileContextPointers(&ContextPointers, TargetFrame);
1147
1148 /* Copy the nonvolatiles to the captured locations */
1149 *ContextPointers.R12 = Context->R12;
1150 *ContextPointers.R13 = Context->R13;
1151 *ContextPointers.R14 = Context->R14;
1152 *ContextPointers.R15 = Context->R15;
1153 *ContextPointers.Xmm6 = Context->Xmm6;
1154 *ContextPointers.Xmm7 = Context->Xmm7;
1155 *ContextPointers.Xmm8 = Context->Xmm8;
1156 *ContextPointers.Xmm9 = Context->Xmm9;
1157 *ContextPointers.Xmm10 = Context->Xmm10;
1158 *ContextPointers.Xmm11 = Context->Xmm11;
1159 *ContextPointers.Xmm12 = Context->Xmm12;
1160 *ContextPointers.Xmm13 = Context->Xmm13;
1161 *ContextPointers.Xmm14 = Context->Xmm14;
1162 *ContextPointers.Xmm15 = Context->Xmm15;
1163}
1164
1165VOID
1168
1169VOID
1172 _In_ PEXCEPTION_RECORD ExceptionRecord)
1173{
1174 if (ExceptionRecord != NULL)
1175 {
1176 if ((ExceptionRecord->ExceptionCode == STATUS_UNWIND_CONSOLIDATE) &&
1177 (ExceptionRecord->NumberParameters >= 1))
1178 {
1179 PVOID (*Consolidate)(EXCEPTION_RECORD*) = (PVOID)ExceptionRecord->ExceptionInformation[0];
1180 // FIXME: This should be called through an asm wrapper to allow handling recursive unwinding
1181 ContextRecord->Rip = (ULONG64)Consolidate(ExceptionRecord);
1182 }
1183 }
1184
1186}
unsigned char BOOLEAN
#define __inline
Definition: _wctype.cpp:15
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:203
KPROCESSOR_MODE NTAPI RtlpGetMode(VOID)
Definition: libsupp.c:55
PVOID NTAPI RtlPcToFileHeader(IN PVOID PcValue, PVOID *BaseOfImage)
Definition: libsupp.c:658
VOID NTAPI RtlpGetStackLimits(OUT PULONG_PTR LowLimit, OUT PULONG_PTR HighLimit)
Definition: libsupp.c:337
@ 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
unsigned int BOOL
Definition: ntddk_ex.h:94
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:90
void __cdecl __debugbreak(void)
Definition: intrin_ppc.h:698
#define NtCurrentTeb
#define ASSERT(a)
Definition: mode.c:44
unsigned __int64 * PULONG64
Definition: imports.h:198
unsigned __int64 ULONG64
Definition: imports.h:198
_In_ ACCESS_MASK _In_ POBJECT_ATTRIBUTES _Reserved_ ULONG _In_opt_ PUNICODE_STRING _In_ ULONG _Out_opt_ PULONG Disposition
Definition: cmfuncs.h:56
#define KernelMode
Definition: asm.h:38
#define UserMode
Definition: asm.h:39
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)
#define _Inout_
Definition: no_sal2.h:162
#define _Outptr_
Definition: no_sal2.h:262
#define _Inout_opt_
Definition: no_sal2.h:216
#define _Out_
Definition: no_sal2.h:160
#define _In_
Definition: no_sal2.h:158
#define _In_opt_
Definition: no_sal2.h:212
int Count
Definition: noreturn.cpp:7
_IRQL_requires_same_ _In_ PVOID EstablisherFrame
Definition: ntbasedef.h:661
_IRQL_requires_same_ _In_ PVOID _Inout_ struct _CONTEXT * ContextRecord
Definition: ntbasedef.h:662
_IRQL_requires_same_ _In_ PVOID _Inout_ struct _CONTEXT _In_ PVOID DispatcherContext
Definition: ntbasedef.h:663
_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:66
#define _SEH2_END
Definition: pseh2_64.h:155
#define _SEH2_TRY
Definition: pseh2_64.h:55
unsigned char UBYTE
Definition: rsym64.h:4
struct _RUNTIME_FUNCTION * PRUNTIME_FUNCTION
struct _RUNTIME_FUNCTION RUNTIME_FUNCTION
@ UNW_FLAG_EHANDLER
Definition: rsym64.h:109
@ UNW_FLAG_CHAININFO
Definition: rsym64.h:111
@ UNW_FLAG_UHANDLER
Definition: rsym64.h:110
#define DPRINT
Definition: sndvol32.h:73
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:1068
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:677
#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:935
VOID RtlRestoreContext(_In_ PCONTEXT ContextRecord, _In_ PEXCEPTION_RECORD ExceptionRecord)
Definition: unwind.c:1170
#define UWOP_SAVE_NONVOL
Definition: unwind.c:23
static VOID RtlpCaptureNonVolatileContextPointers(_Out_ PKNONVOLATILE_CONTEXT_POINTERS NonvolatileContextPointers, _In_ ULONG64 TargetFrame)
Definition: unwind.c:1087
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:892
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:953
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. https://learn....
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)
static __inline BOOL RtlpIsStackPointerValid(_In_ ULONG64 StackPointer, _In_ ULONG64 LowLimit, _In_ ULONG64 HighLimit)
Definition: unwind.c:654
#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:1139
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:354
static WLX_DISPATCH_VERSION_1_4 FunctionTable
Definition: wlx.c:722
_Must_inspect_result_ _In_ ULONG Flags
Definition: wsk.h:170
_Out_ PULONG_PTR HighLimit
Definition: iofuncs.h:2885
M128A
Definition: ketypes.h:937
enum _MODE MODE
#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
Definition: xmlstorage.h:181
char CHAR
Definition: xmlstorage.h:175
unsigned char BYTE
Definition: xxhash.c:193