forked from melonDS-emu/melonDS
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathNDS.cpp
4412 lines (3703 loc) · 116 KB
/
NDS.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
/*
Copyright 2016-2022 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "NDS.h"
#include "ARM.h"
#include "NDSCart.h"
#include "GBACart.h"
#include "DMA.h"
#include "FIFO.h"
#include "GPU.h"
#include "SPU.h"
#include "SPI.h"
#include "RTC.h"
#include "Wifi.h"
#include "AREngine.h"
#include "Platform.h"
#include "FreeBIOS.h"
#ifdef JIT_ENABLED
#include "ARMJIT.h"
#include "ARMJIT_Memory.h"
#endif
#include "DSi.h"
#include "DSi_SPI_TSC.h"
#include "DSi_NWifi.h"
#include "DSi_Camera.h"
#include "DSi_DSP.h"
namespace NDS
{
// timing notes
//
// * this implementation is technically wrong for VRAM
// each bank is considered a separate region
// but this would only matter in specific VRAM->VRAM DMA transfers or
// when running code in VRAM, which is way unlikely
//
// bus/basedelay/nspenalty
//
// bus types:
// * 0 / 32-bit: nothing special
// * 1 / 16-bit: 32-bit accesses split into two 16-bit accesses, second is always sequential
// * 2 / 8-bit/GBARAM: (presumably) split into multiple 8-bit accesses?
// * 3 / ARM9 internal: cache/TCM
//
// ARM9 always gets 3c nonseq penalty when using the bus (except for mainRAM where the penalty is 7c)
// /!\ 3c penalty doesn't apply to DMA!
//
// ARM7 only gets nonseq penalty when accessing mainRAM (7c as for ARM9)
//
// timings for GBA slot and wifi are set up at runtime
int ConsoleType;
u8 ARM9MemTimings[0x40000][8];
u32 ARM9Regions[0x40000];
u8 ARM7MemTimings[0x20000][4];
u32 ARM7Regions[0x20000];
ARMv5* ARM9;
ARMv4* ARM7;
#ifdef JIT_ENABLED
bool EnableJIT;
#endif
u32 NumFrames;
u32 NumLagFrames;
bool LagFrameFlag;
u64 LastSysClockCycles;
u64 FrameStartTimestamp;
int CurCPU;
const s32 kMaxIterationCycles = 64;
const s32 kIterationCycleMargin = 8;
u32 ARM9ClockShift;
// no need to worry about those overflowing, they can keep going for atleast 4350 years
u64 ARM9Timestamp, ARM9Target;
u64 ARM7Timestamp, ARM7Target;
u64 SysTimestamp;
SchedEvent SchedList[Event_MAX];
u32 SchedListMask;
u32 CPUStop;
u8 ARM9BIOS[0x1000];
u8 ARM7BIOS[0x4000];
u8* MainRAM;
u32 MainRAMMask;
u8* SharedWRAM;
u8 WRAMCnt;
// putting them together so they're always next to each other
MemRegion SWRAM_ARM9;
MemRegion SWRAM_ARM7;
u8* ARM7WRAM;
u16 ExMemCnt[2];
// TODO: these belong in NDSCart!
u8 ROMSeed0[2*8];
u8 ROMSeed1[2*8];
// IO shit
u32 IME[2];
u32 IE[2], IF[2];
u32 IE2, IF2;
u8 PostFlag9;
u8 PostFlag7;
u16 PowerControl9;
u16 PowerControl7;
u16 WifiWaitCnt;
u16 ARM7BIOSProt;
Timer Timers[8];
u8 TimerCheckMask[2];
u64 TimerTimestamp[2];
DMA* DMAs[8];
u32 DMA9Fill[4];
u16 IPCSync9, IPCSync7;
u16 IPCFIFOCnt9, IPCFIFOCnt7;
FIFO<u32, 16> IPCFIFO9; // FIFO in which the ARM9 writes
FIFO<u32, 16> IPCFIFO7;
u16 DivCnt;
u32 DivNumerator[2];
u32 DivDenominator[2];
u32 DivQuotient[2];
u32 DivRemainder[2];
u16 SqrtCnt;
u32 SqrtVal[2];
u32 SqrtRes;
u32 KeyInput;
u16 KeyCnt;
u16 RCnt;
bool Running;
bool RunningGame;
void DivDone(u32 param);
void SqrtDone(u32 param);
void RunTimer(u32 tid, s32 cycles);
void UpdateWifiTimings();
void SetWifiWaitCnt(u16 val);
void SetGBASlotTimings();
bool Init()
{
ARM9 = new ARMv5();
ARM7 = new ARMv4();
#ifdef JIT_ENABLED
ARMJIT::Init();
#else
MainRAM = new u8[0x1000000];
ARM7WRAM = new u8[ARM7WRAMSize];
SharedWRAM = new u8[SharedWRAMSize];
#endif
DMAs[0] = new DMA(0, 0);
DMAs[1] = new DMA(0, 1);
DMAs[2] = new DMA(0, 2);
DMAs[3] = new DMA(0, 3);
DMAs[4] = new DMA(1, 0);
DMAs[5] = new DMA(1, 1);
DMAs[6] = new DMA(1, 2);
DMAs[7] = new DMA(1, 3);
if (!NDSCart::Init()) return false;
if (!GBACart::Init()) return false;
if (!GPU::Init()) return false;
if (!SPU::Init()) return false;
if (!SPI::Init()) return false;
if (!RTC::Init()) return false;
if (!Wifi::Init()) return false;
if (!DSi::Init()) return false;
if (!AREngine::Init()) return false;
return true;
}
void DeInit()
{
#ifdef JIT_ENABLED
ARMJIT::DeInit();
#endif
delete ARM9;
delete ARM7;
for (int i = 0; i < 8; i++)
delete DMAs[i];
NDSCart::DeInit();
GBACart::DeInit();
GPU::DeInit();
SPU::DeInit();
SPI::DeInit();
RTC::DeInit();
Wifi::DeInit();
DSi::DeInit();
AREngine::DeInit();
}
void SetARM9RegionTimings(u32 addrstart, u32 addrend, u32 region, int buswidth, int nonseq, int seq)
{
addrstart >>= 2;
addrend >>= 2;
int N16, S16, N32, S32, cpuN;
N16 = nonseq;
S16 = seq;
if (buswidth == 16)
{
N32 = N16 + S16;
S32 = S16 + S16;
}
else
{
N32 = N16;
S32 = S16;
}
// nonseq accesses on the CPU get a 3-cycle penalty for all regions except main RAM
cpuN = (region == Mem9_MainRAM) ? 0 : 3;
for (u32 i = addrstart; i < addrend; i++)
{
// CPU timings
ARM9MemTimings[i][0] = N16 + cpuN;
ARM9MemTimings[i][1] = S16;
ARM9MemTimings[i][2] = N32 + cpuN;
ARM9MemTimings[i][3] = S32;
// DMA timings
ARM9MemTimings[i][4] = N16;
ARM9MemTimings[i][5] = S16;
ARM9MemTimings[i][6] = N32;
ARM9MemTimings[i][7] = S32;
ARM9Regions[i] = region;
}
ARM9->UpdateRegionTimings(addrstart<<2, addrend<<2);
}
void SetARM7RegionTimings(u32 addrstart, u32 addrend, u32 region, int buswidth, int nonseq, int seq)
{
addrstart >>= 3;
addrend >>= 3;
int N16, S16, N32, S32;
N16 = nonseq;
S16 = seq;
if (buswidth == 16)
{
N32 = N16 + S16;
S32 = S16 + S16;
}
else
{
N32 = N16;
S32 = S16;
}
for (u32 i = addrstart; i < addrend; i++)
{
// CPU and DMA timings are the same
ARM7MemTimings[i][0] = N16;
ARM7MemTimings[i][1] = S16;
ARM7MemTimings[i][2] = N32;
ARM7MemTimings[i][3] = S32;
ARM7Regions[i] = region;
}
}
void InitTimings()
{
// TODO, eventually:
// VRAM is initially unmapped. The timings should be those of void regions.
// Similarly for any unmapped VRAM area.
// Need to check whether supporting these timing characteristics would impact performance
// (especially wrt VRAM mirroring and overlapping and whatnot).
// Also, each VRAM bank is its own memory region. This would matter when DMAing from a VRAM
// bank to another (if this is a thing) for example.
// TODO: check in detail how WRAM works, although it seems to be one region.
// TODO: DSi-specific timings!!
SetARM9RegionTimings(0x00000, 0x100000, 0, 32, 1, 1); // void
SetARM9RegionTimings(0xFFFF0, 0x100000, Mem9_BIOS, 32, 1, 1); // BIOS
SetARM9RegionTimings(0x02000, 0x03000, Mem9_MainRAM, 16, 8, 1); // main RAM
SetARM9RegionTimings(0x03000, 0x04000, Mem9_WRAM, 32, 1, 1); // ARM9/shared WRAM
SetARM9RegionTimings(0x04000, 0x05000, Mem9_IO, 32, 1, 1); // IO
SetARM9RegionTimings(0x05000, 0x06000, Mem9_Pal, 16, 1, 1); // palette
SetARM9RegionTimings(0x06000, 0x07000, Mem9_VRAM, 16, 1, 1); // VRAM
SetARM9RegionTimings(0x07000, 0x08000, Mem9_OAM, 32, 1, 1); // OAM
// ARM7
SetARM7RegionTimings(0x00000, 0x100000, 0, 32, 1, 1); // void
SetARM7RegionTimings(0x00000, 0x00010, Mem7_BIOS, 32, 1, 1); // BIOS
SetARM7RegionTimings(0x02000, 0x03000, Mem7_MainRAM, 16, 8, 1); // main RAM
SetARM7RegionTimings(0x03000, 0x04000, Mem7_WRAM, 32, 1, 1); // ARM7/shared WRAM
SetARM7RegionTimings(0x04000, 0x04800, Mem7_IO, 32, 1, 1); // IO
SetARM7RegionTimings(0x06000, 0x07000, Mem7_VRAM, 16, 1, 1); // ARM7 VRAM
// handled later: GBA slot, wifi
}
bool NeedsDirectBoot()
{
if (ConsoleType == 1)
{
// for now, DSi mode requires original BIOS/NAND
return false;
}
else
{
// internal BIOS does not support direct boot
if (!Platform::GetConfigBool(Platform::ExternalBIOSEnable))
return true;
// DSi/3DS firmwares aren't bootable
if (SPI_Firmware::GetFirmwareLength() == 0x20000)
return true;
return false;
}
}
void SetupDirectBoot(std::string romname)
{
if (ConsoleType == 1)
{
DSi::SetupDirectBoot();
}
else
{
MapSharedWRAM(3);
// setup main RAM data
for (u32 i = 0; i < 0x170; i+=4)
{
u32 tmp = *(u32*)&NDSCart::CartROM[i];
ARM9Write32(0x027FFE00+i, tmp);
}
ARM9Write32(0x027FF800, NDSCart::CartID);
ARM9Write32(0x027FF804, NDSCart::CartID);
ARM9Write16(0x027FF808, NDSCart::Header.HeaderCRC16);
ARM9Write16(0x027FF80A, NDSCart::Header.SecureAreaCRC16);
ARM9Write16(0x027FF850, 0x5835);
ARM9Write32(0x027FFC00, NDSCart::CartID);
ARM9Write32(0x027FFC04, NDSCart::CartID);
ARM9Write16(0x027FFC08, NDSCart::Header.HeaderCRC16);
ARM9Write16(0x027FFC0A, NDSCart::Header.SecureAreaCRC16);
ARM9Write16(0x027FFC10, 0x5835);
ARM9Write16(0x027FFC30, 0xFFFF);
ARM9Write16(0x027FFC40, 0x0001);
u32 arm9start = 0;
// load the ARM9 secure area
if (NDSCart::Header.ARM9ROMOffset >= 0x4000 && NDSCart::Header.ARM9ROMOffset < 0x8000)
{
u8 securearea[0x800];
NDSCart::DecryptSecureArea(securearea);
for (u32 i = 0; i < 0x800; i+=4)
{
ARM9Write32(NDSCart::Header.ARM9RAMAddress+i, *(u32*)&securearea[i]);
arm9start += 4;
}
}
// CHECKME: firmware seems to load this in 0x200 byte chunks
for (u32 i = arm9start; i < NDSCart::Header.ARM9Size; i+=4)
{
u32 tmp = *(u32*)&NDSCart::CartROM[NDSCart::Header.ARM9ROMOffset+i];
ARM9Write32(NDSCart::Header.ARM9RAMAddress+i, tmp);
}
for (u32 i = 0; i < NDSCart::Header.ARM7Size; i+=4)
{
u32 tmp = *(u32*)&NDSCart::CartROM[NDSCart::Header.ARM7ROMOffset+i];
ARM7Write32(NDSCart::Header.ARM7RAMAddress+i, tmp);
}
ARM7BIOSProt = 0x1204;
SPI_Firmware::SetupDirectBoot(false);
ARM9->CP15Write(0x100, 0x00012078);
ARM9->CP15Write(0x200, 0x00000042);
ARM9->CP15Write(0x201, 0x00000042);
ARM9->CP15Write(0x300, 0x00000002);
ARM9->CP15Write(0x502, 0x15111011);
ARM9->CP15Write(0x503, 0x05100011);
ARM9->CP15Write(0x600, 0x04000033);
ARM9->CP15Write(0x601, 0x04000033);
ARM9->CP15Write(0x610, 0x0200002B);
ARM9->CP15Write(0x611, 0x0200002B);
ARM9->CP15Write(0x620, 0x00000000);
ARM9->CP15Write(0x621, 0x00000000);
ARM9->CP15Write(0x630, 0x08000035);
ARM9->CP15Write(0x631, 0x08000035);
ARM9->CP15Write(0x640, 0x0300001B);
ARM9->CP15Write(0x641, 0x0300001B);
ARM9->CP15Write(0x650, 0x00000000);
ARM9->CP15Write(0x651, 0x00000000);
ARM9->CP15Write(0x660, 0xFFFF001D);
ARM9->CP15Write(0x661, 0xFFFF001D);
ARM9->CP15Write(0x670, 0x027FF017);
ARM9->CP15Write(0x671, 0x027FF017);
ARM9->CP15Write(0x910, 0x0300000A);
ARM9->CP15Write(0x911, 0x00000020);
}
NDSCart::SetupDirectBoot(romname);
ARM9->R[12] = NDSCart::Header.ARM9EntryAddress;
ARM9->R[13] = 0x03002F7C;
ARM9->R[14] = NDSCart::Header.ARM9EntryAddress;
ARM9->R_IRQ[0] = 0x03003F80;
ARM9->R_SVC[0] = 0x03003FC0;
ARM7->R[12] = NDSCart::Header.ARM7EntryAddress;
ARM7->R[13] = 0x0380FD80;
ARM7->R[14] = NDSCart::Header.ARM7EntryAddress;
ARM7->R_IRQ[0] = 0x0380FF80;
ARM7->R_SVC[0] = 0x0380FFC0;
ARM9->JumpTo(NDSCart::Header.ARM9EntryAddress);
ARM7->JumpTo(NDSCart::Header.ARM7EntryAddress);
PostFlag9 = 0x01;
PostFlag7 = 0x01;
PowerControl9 = 0x820F;
GPU::SetPowerCnt(PowerControl9);
// checkme
RCnt = 0x8000;
NDSCart::SPICnt = 0x8000;
SPU::SetBias(0x200);
SetWifiWaitCnt(0x0030);
}
void Reset()
{
FILE* f;
u32 i;
#ifdef JIT_ENABLED
EnableJIT = Platform::GetConfigBool(Platform::JIT_Enable);
#endif
RunningGame = false;
LastSysClockCycles = 0;
memset(ARM9BIOS, 0, 0x1000);
memset(ARM7BIOS, 0, 0x4000);
// DS BIOSes are always loaded, even in DSi mode
// we need them for DS-compatible mode
if (Platform::GetConfigBool(Platform::ExternalBIOSEnable))
{
f = Platform::OpenLocalFile(Platform::GetConfigString(Platform::BIOS9Path), "rb");
if (!f)
{
printf("ARM9 BIOS not found\n");
for (i = 0; i < 16; i++)
((u32*)ARM9BIOS)[i] = 0xE7FFDEFF;
}
else
{
fseek(f, 0, SEEK_SET);
fread(ARM9BIOS, 0x1000, 1, f);
printf("ARM9 BIOS loaded\n");
fclose(f);
}
f = Platform::OpenLocalFile(Platform::GetConfigString(Platform::BIOS7Path), "rb");
if (!f)
{
printf("ARM7 BIOS not found\n");
for (i = 0; i < 16; i++)
((u32*)ARM7BIOS)[i] = 0xE7FFDEFF;
}
else
{
fseek(f, 0, SEEK_SET);
fread(ARM7BIOS, 0x4000, 1, f);
printf("ARM7 BIOS loaded\n");
fclose(f);
}
}
else
{
memcpy(ARM9BIOS, bios_arm9_bin, bios_arm9_bin_len);
memcpy(ARM7BIOS, bios_arm7_bin, bios_arm7_bin_len);
}
#ifdef JIT_ENABLED
ARMJIT::Reset();
#endif
if (ConsoleType == 1)
{
DSi::LoadBIOS();
ARM9ClockShift = 2;
MainRAMMask = 0xFFFFFF;
}
else
{
ARM9ClockShift = 1;
MainRAMMask = 0x3FFFFF;
}
// has to be called before InitTimings
// otherwise some PU settings are completely
// unitialised on the first run
ARM9->CP15Reset();
ARM9Timestamp = 0; ARM9Target = 0;
ARM7Timestamp = 0; ARM7Target = 0;
SysTimestamp = 0;
InitTimings();
memset(MainRAM, 0, MainRAMMask + 1);
memset(SharedWRAM, 0, 0x8000);
memset(ARM7WRAM, 0, 0x10000);
MapSharedWRAM(0);
ExMemCnt[0] = 0x4000;
ExMemCnt[1] = 0x4000;
memset(ROMSeed0, 0, 2*8);
memset(ROMSeed1, 0, 2*8);
SetGBASlotTimings();
IME[0] = 0;
IE[0] = 0;
IF[0] = 0;
IME[1] = 0;
IE[1] = 0;
IF[1] = 0;
IE2 = 0;
IF2 = 0;
PostFlag9 = 0x00;
PostFlag7 = 0x00;
PowerControl9 = 0x0001;
PowerControl7 = 0x0001;
WifiWaitCnt = 0xFFFF; // temp
SetWifiWaitCnt(0);
ARM7BIOSProt = 0;
IPCSync9 = 0;
IPCSync7 = 0;
IPCFIFOCnt9 = 0;
IPCFIFOCnt7 = 0;
IPCFIFO9.Clear();
IPCFIFO7.Clear();
DivCnt = 0;
SqrtCnt = 0;
ARM9->Reset();
ARM7->Reset();
CPUStop = 0;
memset(Timers, 0, 8*sizeof(Timer));
TimerCheckMask[0] = 0;
TimerCheckMask[1] = 0;
TimerTimestamp[0] = 0;
TimerTimestamp[1] = 0;
for (i = 0; i < 8; i++) DMAs[i]->Reset();
memset(DMA9Fill, 0, 4*4);
memset(SchedList, 0, sizeof(SchedList));
SchedListMask = 0;
KeyInput = 0x007F03FF;
KeyCnt = 0;
RCnt = 0;
NDSCart::Reset();
GBACart::Reset();
GPU::Reset();
SPU::Reset();
SPI::Reset();
RTC::Reset();
Wifi::Reset();
// TODO: move the SOUNDBIAS/degrade logic to SPU?
// The SOUNDBIAS register does nothing on DSi
SPU::SetApplyBias(ConsoleType == 0);
bool degradeAudio = true;
if (ConsoleType == 1)
{
DSi::Reset();
KeyInput &= ~(1 << (16+6));
degradeAudio = false;
}
int bitrate = Platform::GetConfigInt(Platform::AudioBitrate);
if (bitrate == 1) // Always 10-bit
degradeAudio = true;
else if (bitrate == 2) // Always 16-bit
degradeAudio = false;
SPU::SetDegrade10Bit(degradeAudio);
AREngine::Reset();
}
void Start()
{
Running = true;
}
void Stop()
{
printf("Stopping: shutdown\n");
Running = false;
Platform::StopEmu();
GPU::Stop();
SPU::Stop();
if (ConsoleType == 1)
DSi::Stop();
}
bool DoSavestate_Scheduler(Savestate* file)
{
// this is a bit of a hack
// but uh, your local coder realized that the scheduler list contains function pointers
// and that storing those as-is is not a very good idea
// unless you want it to crash and burn
// this is the solution your local coder came up with.
// it's gross but I think it's the best solution for this problem.
// just remember to add here if you add more event callbacks, kay?
// atleast until we come up with something more elegant.
void (*eventfuncs[])(u32) =
{
GPU::StartScanline, GPU::StartHBlank, GPU::FinishFrame,
SPU::Mix,
Wifi::USTimer,
GPU::DisplayFIFO,
NDSCart::ROMPrepareData, NDSCart::ROMEndTransfer,
NDSCart::SPITransferDone,
SPI::TransferDone,
DivDone,
SqrtDone,
DSi_SDHost::FinishRX,
DSi_SDHost::FinishTX,
DSi_NWifi::MSTimer,
DSi_CamModule::IRQ,
DSi_CamModule::TransferScanline,
DSi_DSP::DSPCatchUpU32,
nullptr
};
int len = Event_MAX;
if (file->Saving)
{
for (int i = 0; i < len; i++)
{
SchedEvent* evt = &SchedList[i];
u32 funcid = 0xFFFFFFFF;
if (evt->Func)
{
for (int j = 0; eventfuncs[j]; j++)
{
if (evt->Func == eventfuncs[j])
{
funcid = j;
break;
}
}
if (funcid == 0xFFFFFFFF)
{
printf("savestate: VERY BAD!!!!! FUNCTION POINTER FOR EVENT %d NOT IN HACKY LIST. CANNOT SAVE. SMACK ARISOTURA.\n", i);
return false;
}
}
file->Var32(&funcid);
file->Var64(&evt->Timestamp);
file->Var32(&evt->Param);
}
}
else
{
for (int i = 0; i < len; i++)
{
SchedEvent* evt = &SchedList[i];
u32 funcid;
file->Var32(&funcid);
if (funcid != 0xFFFFFFFF)
{
for (int j = 0; ; j++)
{
if (!eventfuncs[j])
{
printf("savestate: VERY BAD!!!!!! EVENT FUNCTION POINTER ID %d IS OUT OF RANGE. HAX?????\n", j);
return false;
}
if (j == funcid) break;
}
evt->Func = eventfuncs[funcid];
}
else
evt->Func = nullptr;
file->Var64(&evt->Timestamp);
file->Var32(&evt->Param);
}
}
return true;
}
bool DoSavestate(Savestate* file)
{
file->Section("NDSG");
if (file->Saving)
{
u32 console = ConsoleType;
file->Var32(&console);
}
else
{
u32 console;
file->Var32(&console);
if (console != ConsoleType)
return false;
}
file->VarArray(MainRAM, MainRAMMaxSize);
file->VarArray(SharedWRAM, SharedWRAMSize);
file->VarArray(ARM7WRAM, ARM7WRAMSize);
//file->VarArray(ARM9BIOS, 0x1000);
//file->VarArray(ARM7BIOS, 0x4000);
file->VarArray(ExMemCnt, 2*sizeof(u16));
file->VarArray(ROMSeed0, 2*8);
file->VarArray(ROMSeed1, 2*8);
file->Var16(&WifiWaitCnt);
file->VarArray(IME, 2*sizeof(u32));
file->VarArray(IE, 2*sizeof(u32));
file->VarArray(IF, 2*sizeof(u32));
file->Var32(&IE2);
file->Var32(&IF2);
file->Var8(&PostFlag9);
file->Var8(&PostFlag7);
file->Var16(&PowerControl9);
file->Var16(&PowerControl7);
file->Var16(&ARM7BIOSProt);
file->Var16(&IPCSync9);
file->Var16(&IPCSync7);
file->Var16(&IPCFIFOCnt9);
file->Var16(&IPCFIFOCnt7);
IPCFIFO9.DoSavestate(file);
IPCFIFO7.DoSavestate(file);
file->Var16(&DivCnt);
file->Var16(&SqrtCnt);
file->Var32(&CPUStop);
for (int i = 0; i < 8; i++)
{
Timer* timer = &Timers[i];
file->Var16(&timer->Reload);
file->Var16(&timer->Cnt);
file->Var32(&timer->Counter);
file->Var32(&timer->CycleShift);
}
file->VarArray(TimerCheckMask, 2*sizeof(u8));
file->VarArray(TimerTimestamp, 2*sizeof(u64));
file->VarArray(DMA9Fill, 4*sizeof(u32));
if (!DoSavestate_Scheduler(file)) return false;
file->Var32(&SchedListMask);
file->Var64(&ARM9Timestamp);
file->Var64(&ARM9Target);
file->Var64(&ARM7Timestamp);
file->Var64(&ARM7Target);
file->Var64(&SysTimestamp);
file->Var64(&LastSysClockCycles);
file->Var64(&FrameStartTimestamp);
file->Var32(&NumFrames);
file->Var32(&NumLagFrames);
file->Bool32(&LagFrameFlag);
// TODO: save KeyInput????
file->Var16(&KeyCnt);
file->Var16(&RCnt);
file->Var8(&WRAMCnt);
file->Bool32(&RunningGame);
if (!file->Saving)
{
// 'dept of redundancy dept'
// but we do need to update the mappings
MapSharedWRAM(WRAMCnt);
InitTimings();
SetGBASlotTimings();
UpdateWifiTimings();
}
for (int i = 0; i < 8; i++)
DMAs[i]->DoSavestate(file);
ARM9->DoSavestate(file);
ARM7->DoSavestate(file);
NDSCart::DoSavestate(file);
if (ConsoleType == 0)
GBACart::DoSavestate(file);
GPU::DoSavestate(file);
SPU::DoSavestate(file);
SPI::DoSavestate(file);
RTC::DoSavestate(file);
Wifi::DoSavestate(file);
if (ConsoleType == 1)
DSi::DoSavestate(file);
if (!file->Saving)
{
GPU::SetPowerCnt(PowerControl9);
SPU::SetPowerCnt(PowerControl7 & 0x0001);
Wifi::SetPowerCnt(PowerControl7 & 0x0002);
}
#ifdef JIT_ENABLED
if (!file->Saving)
{
ARMJIT::ResetBlockCache();
ARMJIT_Memory::Reset();
}
#endif
return true;
}
void SetConsoleType(int type)
{
ConsoleType = type;
}
bool LoadCart(const u8* romdata, u32 romlen, const u8* savedata, u32 savelen)
{
if (!NDSCart::LoadROM(romdata, romlen))
return false;
if (savedata && savelen)
NDSCart::LoadSave(savedata, savelen);
return true;
}
void LoadSave(const u8* savedata, u32 savelen)
{
if (savedata && savelen)
NDSCart::LoadSave(savedata, savelen);
}
void EjectCart()
{
NDSCart::EjectCart();
}
bool CartInserted()
{
return NDSCart::CartInserted;
}
bool LoadGBACart(const u8* romdata, u32 romlen, const u8* savedata, u32 savelen)
{
if (!GBACart::LoadROM(romdata, romlen))
return false;
if (savedata && savelen)
GBACart::LoadSave(savedata, savelen);
return true;
}
void LoadGBAAddon(int type)
{
GBACart::LoadAddon(type);
}
void EjectGBACart()
{
GBACart::EjectCart();
}
void LoadBIOS()
{
Reset();
}
u64 NextTarget()