-
Notifications
You must be signed in to change notification settings - Fork 4.7k
/
stubs.cpp
2039 lines (1718 loc) · 75.2 KB
/
stubs.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
//
// File: stubs.cpp
//
// This file contains stub functions for unimplemented features need to
// run on the RISCV64 platform.
#include "common.h"
#include "dllimportcallback.h"
#include "comdelegate.h"
#include "asmconstants.h"
#include "virtualcallstub.h"
#include "jitinterface.h"
#include "ecall.h"
#ifndef DACCESS_COMPILE
//-----------------------------------------------------------------------
// InstructionFormat for JAL/JALR (unconditional jump)
//-----------------------------------------------------------------------
class BranchInstructionFormat : public InstructionFormat
{
// Encoding of the VariationCode:
// bit(0) indicates whether this is a direct or an indirect jump.
// bit(1) indicates whether this is a branch with link -a.k.a call-
public:
enum VariationCodes
{
BIF_VAR_INDIRECT = 0x00000001,
BIF_VAR_CALL = 0x00000002,
BIF_VAR_JUMP = 0x00000000,
BIF_VAR_INDIRECT_CALL = 0x00000003
};
private:
BOOL IsIndirect(UINT variationCode)
{
return (variationCode & BIF_VAR_INDIRECT) != 0;
}
BOOL IsCall(UINT variationCode)
{
return (variationCode & BIF_VAR_CALL) != 0;
}
public:
BranchInstructionFormat() : InstructionFormat(InstructionFormat::k64)
{
LIMITED_METHOD_CONTRACT;
}
virtual UINT GetSizeOfInstruction(UINT refSize, UINT variationCode)
{
LIMITED_METHOD_CONTRACT;
_ASSERTE(refSize == InstructionFormat::k64);
if (IsIndirect(variationCode))
return 16;
else
return 12;
}
virtual UINT GetSizeOfData(UINT refSize, UINT variationCode)
{
WRAPPER_NO_CONTRACT;
return 8;
}
virtual UINT GetHotSpotOffset(UINT refsize, UINT variationCode)
{
WRAPPER_NO_CONTRACT;
return 0;
}
virtual BOOL CanReach(UINT refSize, UINT variationCode, BOOL fExternal, INT_PTR offset)
{
if (fExternal)
{
// Note that the parameter 'offset' is not an offset but the target address itself (when fExternal is true)
return (refSize == InstructionFormat::k64);
}
else
{
return ((offset >= -0x80000000L && offset <= 0x7fffffff) || (refSize == InstructionFormat::k64));
}
}
virtual VOID EmitInstruction(UINT refSize, int64_t fixedUpReference, BYTE *pOutBufferRX, BYTE *pOutBufferRW, UINT variationCode, BYTE *pDataBuffer)
{
LIMITED_METHOD_CONTRACT;
if (IsIndirect(variationCode))
{
_ASSERTE(((UINT_PTR)pDataBuffer & 7) == 0);
int64_t dataOffset = pDataBuffer - pOutBufferRW;
if ((dataOffset < -(0x80000000L)) || (dataOffset > 0x7fffffff))
COMPlusThrow(kNotSupportedException);
UINT16 imm12 = (UINT16)(0xFFF & dataOffset);
// auipc t1, dataOffset[31:12]
// ld t1, t1, dataOffset[11:0]
// ld t1, t1, 0
// jalr x0/1, t1,0
*(DWORD*)pOutBufferRW = 0x00000317 | (((dataOffset + 0x800) >> 12) << 12); // auipc t1, dataOffset[31:12]
*(DWORD*)(pOutBufferRW + 4) = 0x00033303 | (imm12 << 20); // ld t1, t1, dataOffset[11:0]
*(DWORD*)(pOutBufferRW + 8) = 0x00033303; // ld t1, 0(t1)
if (IsCall(variationCode))
{
*(DWORD*)(pOutBufferRW + 12) = 0x000300e7; // jalr ra, t1, 0
}
else
{
*(DWORD*)(pOutBufferRW + 12) = 0x00030067 ;// jalr x0, t1,0
}
*((int64_t*)pDataBuffer) = fixedUpReference + (int64_t)pOutBufferRX;
}
else
{
_ASSERTE(((UINT_PTR)pDataBuffer & 7) == 0);
int64_t dataOffset = pDataBuffer - pOutBufferRW;
if ((dataOffset < -(0x80000000L)) || (dataOffset > 0x7fffffff))
COMPlusThrow(kNotSupportedException);
UINT16 imm12 = (UINT16)(0xFFF & dataOffset);
// auipc t1, dataOffset[31:12]
// ld t1, t1, dataOffset[11:0]
// jalr x0/1, t1,0
*(DWORD*)pOutBufferRW = 0x00000317 | (((dataOffset + 0x800) >> 12) << 12);// auipc t1, dataOffset[31:12]
*(DWORD*)(pOutBufferRW + 4) = 0x00033303 | (imm12 << 20); // ld t1, t1, dataOffset[11:0]
if (IsCall(variationCode))
{
*(DWORD*)(pOutBufferRW + 8) = 0x000300e7; // jalr ra, t1, 0
}
else
{
*(DWORD*)(pOutBufferRW + 8) = 0x00030067 ;// jalr x0, t1,0
}
if (!ClrSafeInt<int64_t>::addition(fixedUpReference, (int64_t)pOutBufferRX, fixedUpReference))
COMPlusThrowArithmetic();
*((int64_t*)pDataBuffer) = fixedUpReference;
}
}
};
static BYTE gBranchIF[sizeof(BranchInstructionFormat)];
#endif
void ClearRegDisplayArgumentAndScratchRegisters(REGDISPLAY * pRD)
{
pRD->volatileCurrContextPointers.R0 = NULL;
pRD->volatileCurrContextPointers.A0 = NULL;
pRD->volatileCurrContextPointers.A1 = NULL;
pRD->volatileCurrContextPointers.A2 = NULL;
pRD->volatileCurrContextPointers.A3 = NULL;
pRD->volatileCurrContextPointers.A4 = NULL;
pRD->volatileCurrContextPointers.A5 = NULL;
pRD->volatileCurrContextPointers.A6 = NULL;
pRD->volatileCurrContextPointers.A7 = NULL;
pRD->volatileCurrContextPointers.T0 = NULL;
pRD->volatileCurrContextPointers.T1 = NULL;
pRD->volatileCurrContextPointers.T2 = NULL;
pRD->volatileCurrContextPointers.T3 = NULL;
pRD->volatileCurrContextPointers.T4 = NULL;
pRD->volatileCurrContextPointers.T5 = NULL;
pRD->volatileCurrContextPointers.T6 = NULL;
}
void LazyMachState::unwindLazyState(LazyMachState* baseState,
MachState* unwoundstate,
DWORD threadId,
int funCallDepth)
{
T_CONTEXT context;
T_KNONVOLATILE_CONTEXT_POINTERS nonVolContextPtrs;
context.ContextFlags = 0; // Read by PAL_VirtualUnwind.
context.Fp = unwoundstate->captureCalleeSavedRegisters[0] = baseState->captureCalleeSavedRegisters[0];
context.S1 = unwoundstate->captureCalleeSavedRegisters[1] = baseState->captureCalleeSavedRegisters[1];
context.S2 = unwoundstate->captureCalleeSavedRegisters[2] = baseState->captureCalleeSavedRegisters[2];
context.S3 = unwoundstate->captureCalleeSavedRegisters[3] = baseState->captureCalleeSavedRegisters[3];
context.S4 = unwoundstate->captureCalleeSavedRegisters[4] = baseState->captureCalleeSavedRegisters[4];
context.S5 = unwoundstate->captureCalleeSavedRegisters[5] = baseState->captureCalleeSavedRegisters[5];
context.S6 = unwoundstate->captureCalleeSavedRegisters[6] = baseState->captureCalleeSavedRegisters[6];
context.S7 = unwoundstate->captureCalleeSavedRegisters[7] = baseState->captureCalleeSavedRegisters[7];
context.S8 = unwoundstate->captureCalleeSavedRegisters[8] = baseState->captureCalleeSavedRegisters[8];
context.S9 = unwoundstate->captureCalleeSavedRegisters[9] = baseState->captureCalleeSavedRegisters[9];
context.S10 = unwoundstate->captureCalleeSavedRegisters[10] = baseState->captureCalleeSavedRegisters[10];
context.S11 = unwoundstate->captureCalleeSavedRegisters[11] = baseState->captureCalleeSavedRegisters[11];
context.Gp = unwoundstate->captureCalleeSavedRegisters[12] = baseState->captureCalleeSavedRegisters[12];
context.Tp = unwoundstate->captureCalleeSavedRegisters[13] = baseState->captureCalleeSavedRegisters[13];
context.Ra = 0; // Filled by the unwinder
context.Sp = baseState->captureSp;
context.Pc = baseState->captureIp;
#if !defined(DACCESS_COMPILE)
// For DAC, if we get here, it means that the LazyMachState is uninitialized and we have to unwind it.
// The API we use to unwind in DAC is StackWalk64(), which does not support the context pointers.
//
// Restore the integer registers to KNONVOLATILE_CONTEXT_POINTERS to be used for unwinding.
nonVolContextPtrs.Fp = &unwoundstate->captureCalleeSavedRegisters[0];
nonVolContextPtrs.S1 = &unwoundstate->captureCalleeSavedRegisters[1];
nonVolContextPtrs.S2 = &unwoundstate->captureCalleeSavedRegisters[2];
nonVolContextPtrs.S3 = &unwoundstate->captureCalleeSavedRegisters[3];
nonVolContextPtrs.S4 = &unwoundstate->captureCalleeSavedRegisters[4];
nonVolContextPtrs.S5 = &unwoundstate->captureCalleeSavedRegisters[5];
nonVolContextPtrs.S6 = &unwoundstate->captureCalleeSavedRegisters[6];
nonVolContextPtrs.S7 = &unwoundstate->captureCalleeSavedRegisters[7];
nonVolContextPtrs.S8 = &unwoundstate->captureCalleeSavedRegisters[8];
nonVolContextPtrs.S9 = &unwoundstate->captureCalleeSavedRegisters[9];
nonVolContextPtrs.S10 = &unwoundstate->captureCalleeSavedRegisters[10];
nonVolContextPtrs.S11 = &unwoundstate->captureCalleeSavedRegisters[11];
nonVolContextPtrs.Gp = &unwoundstate->captureCalleeSavedRegisters[12];
nonVolContextPtrs.Tp = &unwoundstate->captureCalleeSavedRegisters[13];
nonVolContextPtrs.Ra = 0; // Filled by the unwinder
#endif // DACCESS_COMPILE
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK LazyMachState::unwindLazyState(ip:%p,sp:%p)\n", baseState->captureIp, baseState->captureSp));
PCODE pvControlPc;
do {
#ifndef TARGET_UNIX
pvControlPc = Thread::VirtualUnwindCallFrame(&context, &nonVolContextPtrs);
#else // !TARGET_UNIX
#ifdef DACCESS_COMPILE
HRESULT hr = DacVirtualUnwind(threadId, &context, &nonVolContextPtrs);
if (FAILED(hr))
{
DacError(hr);
}
#else // DACCESS_COMPILE
BOOL success = PAL_VirtualUnwind(&context, &nonVolContextPtrs);
if (!success)
{
_ASSERTE(!"unwindLazyState: Unwinding failed");
EEPOLICY_HANDLE_FATAL_ERROR(COR_E_EXECUTIONENGINE);
}
#endif // DACCESS_COMPILE
pvControlPc = GetIP(&context);
#endif // !TARGET_UNIX
if (funCallDepth > 0)
{
funCallDepth--;
if (funCallDepth == 0)
break;
}
else
{
// Determine whether given IP resides in JITted code. (It returns nonzero in that case.)
// Use it now to see if we've unwound to managed code yet.
BOOL fIsManagedCode = ExecutionManager::IsManagedCode(pvControlPc);
if (fIsManagedCode)
break;
}
} while (true);
#ifdef TARGET_UNIX
unwoundstate->captureCalleeSavedRegisters[0] = context.Fp;
unwoundstate->captureCalleeSavedRegisters[1] = context.S1;
unwoundstate->captureCalleeSavedRegisters[2] = context.S2;
unwoundstate->captureCalleeSavedRegisters[3] = context.S3;
unwoundstate->captureCalleeSavedRegisters[4] = context.S4;
unwoundstate->captureCalleeSavedRegisters[5] = context.S5;
unwoundstate->captureCalleeSavedRegisters[6] = context.S6;
unwoundstate->captureCalleeSavedRegisters[7] = context.S7;
unwoundstate->captureCalleeSavedRegisters[8] = context.S8;
unwoundstate->captureCalleeSavedRegisters[9] = context.S9;
unwoundstate->captureCalleeSavedRegisters[10] = context.S10;
unwoundstate->captureCalleeSavedRegisters[11] = context.S11;
unwoundstate->captureCalleeSavedRegisters[12] = context.Gp;
unwoundstate->captureCalleeSavedRegisters[13] = context.Tp;
#endif
#ifdef DACCESS_COMPILE
// For DAC builds, we update the registers directly since we dont have context pointers
unwoundstate->captureCalleeSavedRegisters[0] = context.Fp;
unwoundstate->captureCalleeSavedRegisters[1] = context.S1;
unwoundstate->captureCalleeSavedRegisters[2] = context.S2;
unwoundstate->captureCalleeSavedRegisters[3] = context.S3;
unwoundstate->captureCalleeSavedRegisters[4] = context.S4;
unwoundstate->captureCalleeSavedRegisters[5] = context.S5;
unwoundstate->captureCalleeSavedRegisters[6] = context.S6;
unwoundstate->captureCalleeSavedRegisters[7] = context.S7;
unwoundstate->captureCalleeSavedRegisters[8] = context.S8;
unwoundstate->captureCalleeSavedRegisters[9] = context.S9;
unwoundstate->captureCalleeSavedRegisters[10] = context.S10;
unwoundstate->captureCalleeSavedRegisters[11] = context.S11;
unwoundstate->captureCalleeSavedRegisters[12] = context.Gp;
unwoundstate->captureCalleeSavedRegisters[13] = context.Tp;
#else // !DACCESS_COMPILE
// For non-DAC builds, update the register state from context pointers
unwoundstate->ptrCalleeSavedRegisters[0] = nonVolContextPtrs.Fp;
unwoundstate->ptrCalleeSavedRegisters[1] = nonVolContextPtrs.S1;
unwoundstate->ptrCalleeSavedRegisters[2] = nonVolContextPtrs.S2;
unwoundstate->ptrCalleeSavedRegisters[3] = nonVolContextPtrs.S3;
unwoundstate->ptrCalleeSavedRegisters[4] = nonVolContextPtrs.S4;
unwoundstate->ptrCalleeSavedRegisters[5] = nonVolContextPtrs.S5;
unwoundstate->ptrCalleeSavedRegisters[6] = nonVolContextPtrs.S6;
unwoundstate->ptrCalleeSavedRegisters[7] = nonVolContextPtrs.S7;
unwoundstate->ptrCalleeSavedRegisters[8] = nonVolContextPtrs.S8;
unwoundstate->ptrCalleeSavedRegisters[9] = nonVolContextPtrs.S9;
unwoundstate->ptrCalleeSavedRegisters[10] = nonVolContextPtrs.S10;
unwoundstate->ptrCalleeSavedRegisters[11] = nonVolContextPtrs.S11;
unwoundstate->ptrCalleeSavedRegisters[12] = nonVolContextPtrs.Gp;
unwoundstate->ptrCalleeSavedRegisters[13] = nonVolContextPtrs.Tp;
#endif // DACCESS_COMPILE
unwoundstate->_pc = context.Pc;
unwoundstate->_sp = context.Sp;
unwoundstate->_isValid = TRUE;
}
void HelperMethodFrame::UpdateRegDisplay(const PREGDISPLAY pRD, bool updateFloats)
{
CONTRACTL
{
NOTHROW;
GC_NOTRIGGER;
MODE_ANY;
SUPPORTS_DAC;
}
CONTRACTL_END;
#ifndef DACCESS_COMPILE
if (updateFloats)
{
UpdateFloatingPointRegisters(pRD);
_ASSERTE(pRD->pCurrentContext->Pc == GetReturnAddress());
}
#endif // DACCESS_COMPILE
pRD->IsCallerContextValid = FALSE;
pRD->IsCallerSPValid = FALSE; // Don't add usage of this field. This is only temporary.
//
// Copy the saved state from the frame to the current context.
//
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK HelperMethodFrame::UpdateRegDisplay cached ip:%p, sp:%p\n", m_MachState._pc, m_MachState._sp));
#if defined(DACCESS_COMPILE)
// For DAC, we may get here when the HMF is still uninitialized.
// So we may need to unwind here.
if (!m_MachState.isValid())
{
// This allocation throws on OOM.
MachState* pUnwoundState = (MachState*)DacAllocHostOnlyInstance(sizeof(*pUnwoundState), true);
InsureInit(pUnwoundState);
pRD->pCurrentContext->Pc = pRD->ControlPC = pUnwoundState->_pc;
pRD->pCurrentContext->Sp = pRD->SP = pUnwoundState->_sp;
pRD->pCurrentContext->Fp = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[0]);
pRD->pCurrentContext->S1 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[1]);
pRD->pCurrentContext->S2 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[2]);
pRD->pCurrentContext->S3 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[3]);
pRD->pCurrentContext->S4 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[4]);
pRD->pCurrentContext->S5 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[5]);
pRD->pCurrentContext->S6 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[6]);
pRD->pCurrentContext->S7 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[7]);
pRD->pCurrentContext->S8 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[8]);
pRD->pCurrentContext->S9 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[9]);
pRD->pCurrentContext->S10 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[10]);
pRD->pCurrentContext->S11 = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[11]);
pRD->pCurrentContext->Gp = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[12]);
pRD->pCurrentContext->Tp = (DWORD64)(pUnwoundState->captureCalleeSavedRegisters[13]);
pRD->pCurrentContext->Ra = 0; // Unwind again to get Caller's PC
pRD->pCurrentContextPointers->Fp = pUnwoundState->ptrCalleeSavedRegisters[0];
pRD->pCurrentContextPointers->S1 = pUnwoundState->ptrCalleeSavedRegisters[1];
pRD->pCurrentContextPointers->S2 = pUnwoundState->ptrCalleeSavedRegisters[2];
pRD->pCurrentContextPointers->S3 = pUnwoundState->ptrCalleeSavedRegisters[3];
pRD->pCurrentContextPointers->S4 = pUnwoundState->ptrCalleeSavedRegisters[4];
pRD->pCurrentContextPointers->S5 = pUnwoundState->ptrCalleeSavedRegisters[5];
pRD->pCurrentContextPointers->S6 = pUnwoundState->ptrCalleeSavedRegisters[6];
pRD->pCurrentContextPointers->S7 = pUnwoundState->ptrCalleeSavedRegisters[7];
pRD->pCurrentContextPointers->S8 = pUnwoundState->ptrCalleeSavedRegisters[8];
pRD->pCurrentContextPointers->S9 = pUnwoundState->ptrCalleeSavedRegisters[9];
pRD->pCurrentContextPointers->S10 = pUnwoundState->ptrCalleeSavedRegisters[10];
pRD->pCurrentContextPointers->S11 = pUnwoundState->ptrCalleeSavedRegisters[11];
pRD->pCurrentContextPointers->Gp = pUnwoundState->ptrCalleeSavedRegisters[12];
pRD->pCurrentContextPointers->Tp = pUnwoundState->ptrCalleeSavedRegisters[13];
pRD->pCurrentContextPointers->Ra = NULL;
return;
}
#endif // DACCESS_COMPILE
// reset pContext; it's only valid for active (top-most) frame
pRD->pContext = NULL;
pRD->ControlPC = GetReturnAddress(); // m_MachState._pc;
pRD->SP = (DWORD64)(size_t)m_MachState._sp;
pRD->pCurrentContext->Pc = pRD->ControlPC;
pRD->pCurrentContext->Sp = pRD->SP;
#ifdef TARGET_UNIX
pRD->pCurrentContext->Fp = m_MachState.ptrCalleeSavedRegisters[0] ? *m_MachState.ptrCalleeSavedRegisters[0] : m_MachState.captureCalleeSavedRegisters[0];
pRD->pCurrentContext->S1 = m_MachState.ptrCalleeSavedRegisters[1] ? *m_MachState.ptrCalleeSavedRegisters[1] : m_MachState.captureCalleeSavedRegisters[1];
pRD->pCurrentContext->S2 = m_MachState.ptrCalleeSavedRegisters[2] ? *m_MachState.ptrCalleeSavedRegisters[2] : m_MachState.captureCalleeSavedRegisters[2];
pRD->pCurrentContext->S3 = m_MachState.ptrCalleeSavedRegisters[3] ? *m_MachState.ptrCalleeSavedRegisters[3] : m_MachState.captureCalleeSavedRegisters[3];
pRD->pCurrentContext->S4 = m_MachState.ptrCalleeSavedRegisters[4] ? *m_MachState.ptrCalleeSavedRegisters[4] : m_MachState.captureCalleeSavedRegisters[4];
pRD->pCurrentContext->S5 = m_MachState.ptrCalleeSavedRegisters[5] ? *m_MachState.ptrCalleeSavedRegisters[5] : m_MachState.captureCalleeSavedRegisters[5];
pRD->pCurrentContext->S6 = m_MachState.ptrCalleeSavedRegisters[6] ? *m_MachState.ptrCalleeSavedRegisters[6] : m_MachState.captureCalleeSavedRegisters[6];
pRD->pCurrentContext->S7 = m_MachState.ptrCalleeSavedRegisters[7] ? *m_MachState.ptrCalleeSavedRegisters[7] : m_MachState.captureCalleeSavedRegisters[7];
pRD->pCurrentContext->S8 = m_MachState.ptrCalleeSavedRegisters[8] ? *m_MachState.ptrCalleeSavedRegisters[8] : m_MachState.captureCalleeSavedRegisters[8];
pRD->pCurrentContext->S9 = m_MachState.ptrCalleeSavedRegisters[9] ? *m_MachState.ptrCalleeSavedRegisters[9] : m_MachState.captureCalleeSavedRegisters[9];
pRD->pCurrentContext->S10 = m_MachState.ptrCalleeSavedRegisters[10] ? *m_MachState.ptrCalleeSavedRegisters[10] : m_MachState.captureCalleeSavedRegisters[10];
pRD->pCurrentContext->S11 = m_MachState.ptrCalleeSavedRegisters[11] ? *m_MachState.ptrCalleeSavedRegisters[11] : m_MachState.captureCalleeSavedRegisters[11];
pRD->pCurrentContext->Gp = m_MachState.ptrCalleeSavedRegisters[12] ? *m_MachState.ptrCalleeSavedRegisters[12] : m_MachState.captureCalleeSavedRegisters[12];
pRD->pCurrentContext->Tp = m_MachState.ptrCalleeSavedRegisters[13] ? *m_MachState.ptrCalleeSavedRegisters[13] : m_MachState.captureCalleeSavedRegisters[13];
pRD->pCurrentContext->Ra = 0; // Unwind again to get Caller's PC
#else // TARGET_UNIX
pRD->pCurrentContext->Fp = *m_MachState.ptrCalleeSavedRegisters[0];
pRD->pCurrentContext->S1 = *m_MachState.ptrCalleeSavedRegisters[1];
pRD->pCurrentContext->S2 = *m_MachState.ptrCalleeSavedRegisters[2];
pRD->pCurrentContext->S3 = *m_MachState.ptrCalleeSavedRegisters[3];
pRD->pCurrentContext->S4 = *m_MachState.ptrCalleeSavedRegisters[4];
pRD->pCurrentContext->S5 = *m_MachState.ptrCalleeSavedRegisters[5];
pRD->pCurrentContext->S6 = *m_MachState.ptrCalleeSavedRegisters[6];
pRD->pCurrentContext->S7 = *m_MachState.ptrCalleeSavedRegisters[7];
pRD->pCurrentContext->S8 = *m_MachState.ptrCalleeSavedRegisters[8];
pRD->pCurrentContext->S9 = *m_MachState.ptrCalleeSavedRegisters[9];
pRD->pCurrentContext->S10 = *m_MachState.ptrCalleeSavedRegisters[10];
pRD->pCurrentContext->S11 = *m_MachState.ptrCalleeSavedRegisters[11];
pRD->pCurrentContext->Gp = *m_MachState.ptrCalleeSavedRegisters[12];
pRD->pCurrentContext->Tp = *m_MachState.ptrCalleeSavedRegisters[13];
pRD->pCurrentContext->Ra = 0; // Unwind again to get Caller's PC
#endif
#if !defined(DACCESS_COMPILE)
pRD->pCurrentContextPointers->Fp = m_MachState.ptrCalleeSavedRegisters[0];
pRD->pCurrentContextPointers->S1 = m_MachState.ptrCalleeSavedRegisters[1];
pRD->pCurrentContextPointers->S2 = m_MachState.ptrCalleeSavedRegisters[2];
pRD->pCurrentContextPointers->S3 = m_MachState.ptrCalleeSavedRegisters[3];
pRD->pCurrentContextPointers->S4 = m_MachState.ptrCalleeSavedRegisters[4];
pRD->pCurrentContextPointers->S5 = m_MachState.ptrCalleeSavedRegisters[5];
pRD->pCurrentContextPointers->S6 = m_MachState.ptrCalleeSavedRegisters[6];
pRD->pCurrentContextPointers->S7 = m_MachState.ptrCalleeSavedRegisters[7];
pRD->pCurrentContextPointers->S8 = m_MachState.ptrCalleeSavedRegisters[8];
pRD->pCurrentContextPointers->S9 = m_MachState.ptrCalleeSavedRegisters[9];
pRD->pCurrentContextPointers->S10 = m_MachState.ptrCalleeSavedRegisters[10];
pRD->pCurrentContextPointers->S11 = m_MachState.ptrCalleeSavedRegisters[11];
pRD->pCurrentContextPointers->Gp = m_MachState.ptrCalleeSavedRegisters[12];
pRD->pCurrentContextPointers->Tp = m_MachState.ptrCalleeSavedRegisters[13];
pRD->pCurrentContextPointers->Ra = NULL; // Unwind again to get Caller's PC
#endif
ClearRegDisplayArgumentAndScratchRegisters(pRD);
}
#ifndef DACCESS_COMPILE
void ThisPtrRetBufPrecode::Init(MethodDesc* pMD, LoaderAllocator *pLoaderAllocator)
{
WRAPPER_NO_CONTRACT;
//Initially
//a0 -This ptr
//a1 -ReturnBuffer
m_rgCode[0] = 0x00050f93; // addi t6, a0, 0x0
m_rgCode[1] = 0x00058513; // addi a0, a1, 0x0
m_rgCode[2] = 0x000f8593; // addi a1, t6, 0x0
m_rgCode[3] = 0x00000f97; // auipc t6, 0
m_rgCode[4] = 0x00cfbf83; // ld t6, 12(t6)
m_rgCode[5] = 0x000f8067; // jalr x0, 0(t6)
_ASSERTE((UINT32*)&m_pTarget == &m_rgCode[6]);
_ASSERTE(6 == ARRAY_SIZE(m_rgCode));
m_pTarget = GetPreStubEntryPoint();
m_pMethodDesc = (TADDR)pMD;
}
#endif // !DACCESS_COMPILE
void UpdateRegDisplayFromCalleeSavedRegisters(REGDISPLAY * pRD, CalleeSavedRegisters * pCalleeSaved)
{
LIMITED_METHOD_CONTRACT;
pRD->pCurrentContext->S1 = pCalleeSaved->s1;
pRD->pCurrentContext->S2 = pCalleeSaved->s2;
pRD->pCurrentContext->S3 = pCalleeSaved->s3;
pRD->pCurrentContext->S4 = pCalleeSaved->s4;
pRD->pCurrentContext->S5 = pCalleeSaved->s5;
pRD->pCurrentContext->S6 = pCalleeSaved->s6;
pRD->pCurrentContext->S7 = pCalleeSaved->s7;
pRD->pCurrentContext->S8 = pCalleeSaved->s8;
pRD->pCurrentContext->S9 = pCalleeSaved->s9;
pRD->pCurrentContext->S10 = pCalleeSaved->s10;
pRD->pCurrentContext->S11 = pCalleeSaved->s11;
pRD->pCurrentContext->Gp = pCalleeSaved->gp;
pRD->pCurrentContext->Tp = pCalleeSaved->tp;
pRD->pCurrentContext->Fp = pCalleeSaved->fp;
pRD->pCurrentContext->Ra = pCalleeSaved->ra;
T_KNONVOLATILE_CONTEXT_POINTERS * pContextPointers = pRD->pCurrentContextPointers;
pContextPointers->S1 = (PDWORD64)&pCalleeSaved->s1;
pContextPointers->S2 = (PDWORD64)&pCalleeSaved->s2;
pContextPointers->S3 = (PDWORD64)&pCalleeSaved->s3;
pContextPointers->S4 = (PDWORD64)&pCalleeSaved->s4;
pContextPointers->S5 = (PDWORD64)&pCalleeSaved->s5;
pContextPointers->S6 = (PDWORD64)&pCalleeSaved->s6;
pContextPointers->S7 = (PDWORD64)&pCalleeSaved->s7;
pContextPointers->S8 = (PDWORD64)&pCalleeSaved->s8;
pContextPointers->S9 = (PDWORD64)&pCalleeSaved->s9;
pContextPointers->S10 = (PDWORD64)&pCalleeSaved->s10;
pContextPointers->S11 = (PDWORD64)&pCalleeSaved->s11;
pContextPointers->Gp = (PDWORD64)&pCalleeSaved->gp;
pContextPointers->Tp = (PDWORD64)&pCalleeSaved->tp;
pContextPointers->Fp = (PDWORD64)&pCalleeSaved->fp;
pContextPointers->Ra = (PDWORD64)&pCalleeSaved->ra;
}
void TransitionFrame::UpdateRegDisplay(const PREGDISPLAY pRD, bool updateFloats)
{
#ifndef DACCESS_COMPILE
if (updateFloats)
{
UpdateFloatingPointRegisters(pRD);
_ASSERTE(pRD->pCurrentContext->Pc == GetReturnAddress());
}
#endif // DACCESS_COMPILE
pRD->IsCallerContextValid = FALSE;
pRD->IsCallerSPValid = FALSE; // Don't add usage of this field. This is only temporary.
// copy the callee saved regs
CalleeSavedRegisters *pCalleeSaved = GetCalleeSavedRegisters();
UpdateRegDisplayFromCalleeSavedRegisters(pRD, pCalleeSaved);
ClearRegDisplayArgumentAndScratchRegisters(pRD);
// copy the control registers
//pRD->pCurrentContext->Fp = pCalleeSaved->fp;//not needed for duplicated.
//pRD->pCurrentContext->Ra = pCalleeSaved->ra;//not needed for duplicated.
pRD->pCurrentContext->Pc = GetReturnAddress();
pRD->pCurrentContext->Sp = this->GetSP();
// Finally, syncup the regdisplay with the context
SyncRegDisplayToCurrentContext(pRD);
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK TransitionFrame::UpdateRegDisplay(pc:%p, sp:%p)\n", pRD->ControlPC, pRD->SP));
}
void FaultingExceptionFrame::UpdateRegDisplay(const PREGDISPLAY pRD, bool updateFloats)
{
LIMITED_METHOD_DAC_CONTRACT;
// Copy the context to regdisplay
memcpy(pRD->pCurrentContext, &m_ctx, sizeof(T_CONTEXT));
pRD->ControlPC = ::GetIP(&m_ctx);
pRD->SP = ::GetSP(&m_ctx);
// Update the integer registers in KNONVOLATILE_CONTEXT_POINTERS from
// the exception context we have.
pRD->pCurrentContextPointers->S1 = (PDWORD64)&m_ctx.S1;
pRD->pCurrentContextPointers->S2 = (PDWORD64)&m_ctx.S2;
pRD->pCurrentContextPointers->S3 = (PDWORD64)&m_ctx.S3;
pRD->pCurrentContextPointers->S4 = (PDWORD64)&m_ctx.S4;
pRD->pCurrentContextPointers->S5 = (PDWORD64)&m_ctx.S5;
pRD->pCurrentContextPointers->S6 = (PDWORD64)&m_ctx.S6;
pRD->pCurrentContextPointers->S7 = (PDWORD64)&m_ctx.S7;
pRD->pCurrentContextPointers->S8 = (PDWORD64)&m_ctx.S8;
pRD->pCurrentContextPointers->S9 = (PDWORD64)&m_ctx.S9;
pRD->pCurrentContextPointers->S10 = (PDWORD64)&m_ctx.S10;
pRD->pCurrentContextPointers->S11 = (PDWORD64)&m_ctx.S11;
pRD->pCurrentContextPointers->Fp = (PDWORD64)&m_ctx.Fp;
pRD->pCurrentContextPointers->Gp = (PDWORD64)&m_ctx.Gp;
pRD->pCurrentContextPointers->Tp = (PDWORD64)&m_ctx.Tp;
pRD->pCurrentContextPointers->Ra = (PDWORD64)&m_ctx.Ra;
ClearRegDisplayArgumentAndScratchRegisters(pRD);
pRD->IsCallerContextValid = FALSE;
pRD->IsCallerSPValid = FALSE; // Don't add usage of this field. This is only temporary.
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK FaultingExceptionFrame::UpdateRegDisplay(pc:%p, sp:%p)\n", pRD->ControlPC, pRD->SP));
}
void InlinedCallFrame::UpdateRegDisplay(const PREGDISPLAY pRD, bool updateFloats)
{
CONTRACT_VOID
{
NOTHROW;
GC_NOTRIGGER;
#ifdef PROFILING_SUPPORTED
PRECONDITION(CORProfilerStackSnapshotEnabled() || InlinedCallFrame::FrameHasActiveCall(this));
#endif
MODE_ANY;
SUPPORTS_DAC;
}
CONTRACT_END;
if (!InlinedCallFrame::FrameHasActiveCall(this))
{
LOG((LF_CORDB, LL_ERROR, "WARNING: InlinedCallFrame::UpdateRegDisplay called on inactive frame %p\n", this));
return;
}
#ifndef DACCESS_COMPILE
if (updateFloats)
{
UpdateFloatingPointRegisters(pRD);
}
#endif // DACCESS_COMPILE
pRD->IsCallerContextValid = FALSE;
pRD->IsCallerSPValid = FALSE;
pRD->pCurrentContext->Pc = *(DWORD64 *)&m_pCallerReturnAddress;
pRD->pCurrentContext->Sp = *(DWORD64 *)&m_pCallSiteSP;
pRD->pCurrentContext->Fp = *(DWORD64 *)&m_pCalleeSavedFP;
pRD->pCurrentContextPointers->S1 = NULL;
pRD->pCurrentContextPointers->S2 = NULL;
pRD->pCurrentContextPointers->S3 = NULL;
pRD->pCurrentContextPointers->S4 = NULL;
pRD->pCurrentContextPointers->S5 = NULL;
pRD->pCurrentContextPointers->S6 = NULL;
pRD->pCurrentContextPointers->S7 = NULL;
pRD->pCurrentContextPointers->S8 = NULL;
pRD->pCurrentContextPointers->S9 = NULL;
pRD->pCurrentContextPointers->S10 = NULL;
pRD->pCurrentContextPointers->S11 = NULL;
pRD->pCurrentContextPointers->Gp = NULL;
pRD->pCurrentContextPointers->Tp = NULL;
pRD->ControlPC = m_pCallerReturnAddress;
pRD->SP = (DWORD64) dac_cast<TADDR>(m_pCallSiteSP);
// reset pContext; it's only valid for active (top-most) frame
pRD->pContext = NULL;
ClearRegDisplayArgumentAndScratchRegisters(pRD);
// Update the frame pointer in the current context.
pRD->pCurrentContextPointers->Fp = &m_pCalleeSavedFP;
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK InlinedCallFrame::UpdateRegDisplay(pc:%p, sp:%p)\n", pRD->ControlPC, pRD->SP));
RETURN;
}
#ifdef FEATURE_HIJACK
TADDR ResumableFrame::GetReturnAddressPtr(void)
{
LIMITED_METHOD_DAC_CONTRACT;
return dac_cast<TADDR>(m_Regs) + offsetof(T_CONTEXT, Pc);
}
void ResumableFrame::UpdateRegDisplay(const PREGDISPLAY pRD, bool updateFloats)
{
CONTRACT_VOID
{
NOTHROW;
GC_NOTRIGGER;
MODE_ANY;
SUPPORTS_DAC;
}
CONTRACT_END;
CopyMemory(pRD->pCurrentContext, m_Regs, sizeof(T_CONTEXT));
pRD->ControlPC = m_Regs->Pc;
pRD->SP = m_Regs->Sp;
pRD->pCurrentContextPointers->S1 = &m_Regs->S1;
pRD->pCurrentContextPointers->S2 = &m_Regs->S2;
pRD->pCurrentContextPointers->S3 = &m_Regs->S3;
pRD->pCurrentContextPointers->S4 = &m_Regs->S4;
pRD->pCurrentContextPointers->S5 = &m_Regs->S5;
pRD->pCurrentContextPointers->S6 = &m_Regs->S6;
pRD->pCurrentContextPointers->S7 = &m_Regs->S7;
pRD->pCurrentContextPointers->S8 = &m_Regs->S8;
pRD->pCurrentContextPointers->S9 = &m_Regs->S9;
pRD->pCurrentContextPointers->S10 = &m_Regs->S10;
pRD->pCurrentContextPointers->S11 = &m_Regs->S11;
pRD->pCurrentContextPointers->Tp = &m_Regs->Tp;
pRD->pCurrentContextPointers->Gp = &m_Regs->Gp;
pRD->pCurrentContextPointers->Fp = &m_Regs->Fp;
pRD->pCurrentContextPointers->Ra = &m_Regs->Ra;
pRD->volatileCurrContextPointers.R0 = &m_Regs->R0;
pRD->volatileCurrContextPointers.A0 = &m_Regs->A0;
pRD->volatileCurrContextPointers.A1 = &m_Regs->A1;
pRD->volatileCurrContextPointers.A2 = &m_Regs->A2;
pRD->volatileCurrContextPointers.A3 = &m_Regs->A3;
pRD->volatileCurrContextPointers.A4 = &m_Regs->A4;
pRD->volatileCurrContextPointers.A5 = &m_Regs->A5;
pRD->volatileCurrContextPointers.A6 = &m_Regs->A6;
pRD->volatileCurrContextPointers.A7 = &m_Regs->A7;
pRD->volatileCurrContextPointers.T0 = &m_Regs->T0;
pRD->volatileCurrContextPointers.T1 = &m_Regs->T1;
pRD->volatileCurrContextPointers.T2 = &m_Regs->T2;
pRD->volatileCurrContextPointers.T3 = &m_Regs->T3;
pRD->volatileCurrContextPointers.T4 = &m_Regs->T4;
pRD->volatileCurrContextPointers.T5 = &m_Regs->T5;
pRD->volatileCurrContextPointers.T6 = &m_Regs->T6;
pRD->IsCallerContextValid = FALSE;
pRD->IsCallerSPValid = FALSE; // Don't add usage of this field. This is only temporary.
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK ResumableFrame::UpdateRegDisplay(pc:%p, sp:%p)\n", pRD->ControlPC, pRD->SP));
RETURN;
}
void HijackFrame::UpdateRegDisplay(const PREGDISPLAY pRD, bool updateFloats)
{
LIMITED_METHOD_CONTRACT;
pRD->IsCallerContextValid = FALSE;
pRD->IsCallerSPValid = FALSE;
pRD->pCurrentContext->Pc = m_ReturnAddress;
size_t s = sizeof(struct HijackArgs);
_ASSERTE(s%8 == 0); // HijackArgs contains register values and hence will be a multiple of 8
// stack must be multiple of 16. So if s is not multiple of 16 then there must be padding of 8 bytes
s = s + s%16;
pRD->pCurrentContext->Sp = PTR_TO_TADDR(m_Args) + s ;
pRD->pCurrentContext->S1 = m_Args->S1;
pRD->pCurrentContext->S2 = m_Args->S2;
pRD->pCurrentContext->S3 = m_Args->S3;
pRD->pCurrentContext->S4 = m_Args->S4;
pRD->pCurrentContext->S5 = m_Args->S5;
pRD->pCurrentContext->S6 = m_Args->S6;
pRD->pCurrentContext->S7 = m_Args->S7;
pRD->pCurrentContext->S8 = m_Args->S8;
pRD->pCurrentContext->S9 = m_Args->S9;
pRD->pCurrentContext->S10 = m_Args->S10;
pRD->pCurrentContext->S11 = m_Args->S11;
pRD->pCurrentContext->Gp = m_Args->Gp;
pRD->pCurrentContext->Tp = m_Args->Tp;
pRD->pCurrentContext->Fp = m_Args->Fp;
pRD->pCurrentContext->Ra = m_Args->Ra;
pRD->pCurrentContextPointers->S1 = &m_Args->S1;
pRD->pCurrentContextPointers->S2 = &m_Args->S2;
pRD->pCurrentContextPointers->S3 = &m_Args->S3;
pRD->pCurrentContextPointers->S4 = &m_Args->S4;
pRD->pCurrentContextPointers->S5 = &m_Args->S5;
pRD->pCurrentContextPointers->S6 = &m_Args->S6;
pRD->pCurrentContextPointers->S7 = &m_Args->S7;
pRD->pCurrentContextPointers->S8 = &m_Args->S8;
pRD->pCurrentContextPointers->S9 = &m_Args->S9;
pRD->pCurrentContextPointers->S10 = &m_Args->S10;
pRD->pCurrentContextPointers->S11 = &m_Args->S11;
pRD->pCurrentContextPointers->Gp = &m_Args->Gp;
pRD->pCurrentContextPointers->Tp = &m_Args->Tp;
pRD->pCurrentContextPointers->Fp = &m_Args->Fp;
pRD->pCurrentContextPointers->Ra = NULL;
SyncRegDisplayToCurrentContext(pRD);
LOG((LF_GCROOTS, LL_INFO100000, "STACKWALK HijackFrame::UpdateRegDisplay(pc:%p, sp:%p)\n", pRD->ControlPC, pRD->SP));
}
#endif // FEATURE_HIJACK
#ifdef FEATURE_COMINTEROP
void emitCOMStubCall (ComCallMethodDesc *pCOMMethodRX, ComCallMethodDesc *pCOMMethodRW, PCODE target)
{
_ASSERTE(!"RISCV64: not implementation on riscv64!!!");
}
#endif // FEATURE_COMINTEROP
void JIT_TailCall()
{
_ASSERTE(!"RISCV64:NYI");
}
#if !defined(DACCESS_COMPILE)
EXTERN_C void JIT_UpdateWriteBarrierState(bool skipEphemeralCheck, size_t writeableOffset);
extern "C" void STDCALL JIT_PatchedCodeStart();
extern "C" void STDCALL JIT_PatchedCodeLast();
static void UpdateWriteBarrierState(bool skipEphemeralCheck)
{
BYTE *writeBarrierCodeStart = GetWriteBarrierCodeLocation((void*)JIT_PatchedCodeStart);
BYTE *writeBarrierCodeStartRW = writeBarrierCodeStart;
ExecutableWriterHolderNoLog<BYTE> writeBarrierWriterHolder;
if (IsWriteBarrierCopyEnabled())
{
writeBarrierWriterHolder.AssignExecutableWriterHolder(writeBarrierCodeStart, (BYTE*)JIT_PatchedCodeLast - (BYTE*)JIT_PatchedCodeStart);
writeBarrierCodeStartRW = writeBarrierWriterHolder.GetRW();
}
JIT_UpdateWriteBarrierState(GCHeapUtilities::IsServerHeap(), writeBarrierCodeStartRW - writeBarrierCodeStart);
}
void InitJITHelpers1()
{
STANDARD_VM_CONTRACT;
_ASSERTE(g_SystemInfo.dwNumberOfProcessors != 0);
// Allocation helpers, faster but non-logging
if (!((TrackAllocationsEnabled()) ||
(LoggingOn(LF_GCALLOC, LL_INFO10))
#ifdef _DEBUG
|| (g_pConfig->ShouldInjectFault(INJECTFAULT_GCHEAP) != 0)
#endif // _DEBUG
))
{
if (GCHeapUtilities::UseThreadAllocationContexts())
{
SetJitHelperFunction(CORINFO_HELP_NEWSFAST, JIT_NewS_MP_FastPortable);
SetJitHelperFunction(CORINFO_HELP_NEWSFAST_ALIGN8, JIT_NewS_MP_FastPortable);
SetJitHelperFunction(CORINFO_HELP_NEWARR_1_VC, JIT_NewArr1VC_MP_FastPortable);
SetJitHelperFunction(CORINFO_HELP_NEWARR_1_OBJ, JIT_NewArr1OBJ_MP_FastPortable);
SetJitHelperFunction(CORINFO_HELP_BOX, JIT_Box_MP_FastPortable);
ECall::DynamicallyAssignFCallImpl(GetEEFuncEntryPoint(AllocateString_MP_FastPortable), ECall::FastAllocateString);
}
}
UpdateWriteBarrierState(GCHeapUtilities::IsServerHeap());
}
#else
void UpdateWriteBarrierState(bool) {}
#endif // !defined(DACCESS_COMPILE)
PTR_CONTEXT GetCONTEXTFromRedirectedStubStackFrame(T_DISPATCHER_CONTEXT * pDispatcherContext)
{
LIMITED_METHOD_DAC_CONTRACT;
DWORD64 stackSlot = pDispatcherContext->EstablisherFrame + REDIRECTSTUB_SP_OFFSET_CONTEXT;
PTR_PTR_CONTEXT ppContext = dac_cast<PTR_PTR_CONTEXT>((TADDR)stackSlot);
return *ppContext;
}
PTR_CONTEXT GetCONTEXTFromRedirectedStubStackFrame(T_CONTEXT * pContext)
{
LIMITED_METHOD_DAC_CONTRACT;
DWORD64 stackSlot = pContext->Sp + REDIRECTSTUB_SP_OFFSET_CONTEXT;
PTR_PTR_CONTEXT ppContext = dac_cast<PTR_PTR_CONTEXT>((TADDR)stackSlot);
return *ppContext;
}
#if !defined(DACCESS_COMPILE)
FaultingExceptionFrame *GetFrameFromRedirectedStubStackFrame (DISPATCHER_CONTEXT *pDispatcherContext)
{
_ASSERTE(!"RISCV64: not implementation on riscv64!!!");
LIMITED_METHOD_CONTRACT;
return (FaultingExceptionFrame*)NULL;
}
BOOL
AdjustContextForVirtualStub(
EXCEPTION_RECORD *pExceptionRecord,
CONTEXT *pContext)
{
LIMITED_METHOD_CONTRACT;
Thread * pThread = GetThreadNULLOk();
// We may not have a managed thread object. Example is an AV on the helper thread.
// (perhaps during StubManager::IsStub)
if (pThread == NULL)
{
return FALSE;
}
PCODE f_IP = GetIP(pContext);
StubCodeBlockKind sk = RangeSectionStubManager::GetStubKind(f_IP);
if (sk == STUB_CODE_BLOCK_VSD_DISPATCH_STUB)
{
if (*PTR_DWORD(f_IP - 4) != DISPATCH_STUB_FIRST_DWORD)
{
_ASSERTE(!"AV in DispatchStub at unknown instruction");
return FALSE;
}
}
else
if (sk == STUB_CODE_BLOCK_VSD_RESOLVE_STUB)
{
if (*PTR_DWORD(f_IP) != RESOLVE_STUB_FIRST_DWORD)
{
_ASSERTE(!"AV in ResolveStub at unknown instruction");
return FALSE;
}
}
else
{
return FALSE;
}
PCODE callsite = GetAdjustedCallAddress(GetRA(pContext));
// Lr must already have been saved before calling so it should not be necessary to restore Lr
if (pExceptionRecord != NULL)
{
pExceptionRecord->ExceptionAddress = (PVOID)callsite;
}
SetIP(pContext, callsite);
return TRUE;
}
#endif // !DACCESS_COMPILE
UMEntryThunk * UMEntryThunk::Decode(void *pCallback)
{
_ASSERTE(offsetof(UMEntryThunkCode, m_code) == 0);
UMEntryThunkCode * pCode = (UMEntryThunkCode*)pCallback;
// We may be called with an unmanaged external code pointer instead. So if it doesn't look like one of our
// stubs (see UMEntryThunkCode::Encode below) then we'll return NULL. Luckily in these scenarios our
// caller will perform a hash lookup on successful return to verify our result in case random unmanaged
// code happens to look like ours.
if ((pCode->m_code[0] == 0x00000f97) && // auipc t6, 0
(pCode->m_code[1] == 0x018fb383) && // ld t2, 24(t6)
(pCode->m_code[2] == 0x010fbf83) && // ld t6, 16(t6)
(pCode->m_code[3] == 0x000f8067)) // jalr x0, 0(t6)
{
return (UMEntryThunk*)pCode->m_pvSecretParam;
}
return NULL;
}
void UMEntryThunkCode::Encode(UMEntryThunkCode *pEntryThunkCodeRX, BYTE* pTargetCode, void* pvSecretParam)
{
// auipc t6, 0
// ld t2, 24(t6)
// ld t6, 16(t6)
// jalr x0, 0(t6)
// m_pTargetCode data
// m_pvSecretParam data
m_code[0] = 0x00000f97; // auipc t6, 0
m_code[1] = 0x018fb383; // ld t2, 24(t6)
m_code[2] = 0x010fbf83; // ld t6, 16(t6)
m_code[3] = 0x000f8067; // jalr x0, 0(t6)
m_pTargetCode = (TADDR)pTargetCode;
m_pvSecretParam = (TADDR)pvSecretParam;
FlushInstructionCache(GetCurrentProcess(),&pEntryThunkCodeRX->m_code,sizeof(m_code));
}
#ifndef DACCESS_COMPILE
void UMEntryThunkCode::Poison()
{
ExecutableWriterHolder<UMEntryThunkCode> thunkWriterHolder(this, sizeof(UMEntryThunkCode));
UMEntryThunkCode *pThisRW = thunkWriterHolder.GetRW();
pThisRW->m_pTargetCode = (TADDR)UMEntryThunk::ReportViolation;
// ld a0, 24(t6)
pThisRW->m_code[1] = 0x018fb503;
ClrFlushInstructionCache(&m_code,sizeof(m_code));
}
#endif // DACCESS_COMPILE
#if !defined(DACCESS_COMPILE)
VOID ResetCurrentContext()
{
LIMITED_METHOD_CONTRACT;
}
#endif
LONG CLRNoCatchHandler(EXCEPTION_POINTERS* pExceptionInfo, PVOID pv)
{
return EXCEPTION_CONTINUE_SEARCH;
}
void FlushWriteBarrierInstructionCache()
{
// this wouldn't be called in riscv64, just to comply with gchelpers.h
}
int StompWriteBarrierEphemeral(bool isRuntimeSuspended)