-
Notifications
You must be signed in to change notification settings - Fork 13
/
psxbios.c
3330 lines (2827 loc) · 72.5 KB
/
psxbios.c
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 (C) 2019 Ryan Schultz, PCSX-df Team, PCSX team, gameblabla, *
* dmitrysmagin, senquack *
* *
* This program 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 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. *
***************************************************************************/
/* Gameblabla 2018-2019 :
* Numerous changes to bios calls as well as improvements in order to conform to nocash's findings
* for the PSX bios calls. Thanks senquack for helping out with some of the changes
* and helping to spot issues and refine my patches.
* */
/*
* Internal simulated HLE BIOS.
*/
// TODO: implement all system calls, count the exact CPU cycles of system calls.
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <ctype.h>
#include <zlib.h>
#include <gccore.h>
extern char mcd1Written;
extern char mcd2Written;
#include "psxbios.h"
#include "psxhw.h"
//We try to emulate bios :) HELP US :P
char *biosA0n[256] = {
// 0x00
"open", "lseek", "read", "write",
"close", "ioctl", "exit", "sys_a0_07",
"getc", "putc", "todigit", "atof",
"strtoul", "strtol", "abs", "labs",
// 0x10
"atoi", "atol", "atob", "setjmp",
"longjmp", "strcat", "strncat", "strcmp",
"strncmp", "strcpy", "strncpy", "strlen",
"index", "rindex", "strchr", "strrchr",
// 0x20
"strpbrk", "strspn", "strcspn", "strtok",
"strstr", "toupper", "tolower", "bcopy",
"bzero", "bcmp", "memcpy", "memset",
"memmove", "memcmp", "memchr", "rand",
// 0x30
"srand", "qsort", "strtod", "malloc",
"free", "lsearch", "bsearch", "calloc",
"realloc", "InitHeap", "_exit", "getchar",
"putchar", "gets", "puts", "printf",
// 0x40
"sys_a0_40", "LoadTest", "Load", "Exec",
"FlushCache", "InstallInterruptHandler", "GPU_dw", "mem2vram",
"SendGPUStatus", "GPU_cw", "GPU_cwb", "SendPackets",
"sys_a0_4c", "GetGPUStatus", "GPU_sync", "sys_a0_4f",
// 0x50
"sys_a0_50", "LoadExec", "GetSysSp", "sys_a0_53",
"_96_init()", "_bu_init()", "_96_remove()", "sys_a0_57",
"sys_a0_58", "sys_a0_59", "sys_a0_5a", "dev_tty_init",
"dev_tty_open", "sys_a0_5d", "dev_tty_ioctl","dev_cd_open",
// 0x60
"dev_cd_read", "dev_cd_close", "dev_cd_firstfile", "dev_cd_nextfile",
"dev_cd_chdir", "dev_card_open", "dev_card_read", "dev_card_write",
"dev_card_close", "dev_card_firstfile", "dev_card_nextfile","dev_card_erase",
"dev_card_undelete","dev_card_format", "dev_card_rename", "dev_card_6f",
// 0x70
"_bu_init", "_96_init", "_96_remove", "sys_a0_73",
"sys_a0_74", "sys_a0_75", "sys_a0_76", "sys_a0_77",
"_96_CdSeekL", "sys_a0_79", "sys_a0_7a", "sys_a0_7b",
"_96_CdGetStatus", "sys_a0_7d", "_96_CdRead", "sys_a0_7f",
// 0x80
"sys_a0_80", "sys_a0_81", "sys_a0_82", "sys_a0_83",
"sys_a0_84", "_96_CdStop", "sys_a0_86", "sys_a0_87",
"sys_a0_88", "sys_a0_89", "sys_a0_8a", "sys_a0_8b",
"sys_a0_8c", "sys_a0_8d", "sys_a0_8e", "sys_a0_8f",
// 0x90
"sys_a0_90", "sys_a0_91", "sys_a0_92", "sys_a0_93",
"sys_a0_94", "sys_a0_95", "AddCDROMDevice", "AddMemCardDevide",
"DisableKernelIORedirection", "EnableKernelIORedirection", "sys_a0_9a", "sys_a0_9b",
"SetConf", "GetConf", "sys_a0_9e", "SetMem",
// 0xa0
"_boot", "SystemError", "EnqueueCdIntr", "DequeueCdIntr",
"sys_a0_a4", "ReadSector", "get_cd_status", "bufs_cb_0",
"bufs_cb_1", "bufs_cb_2", "bufs_cb_3", "_card_info",
"_card_load", "_card_auto", "bufs_cd_4", "sys_a0_af",
// 0xb0
"sys_a0_b0", "sys_a0_b1", "do_a_long_jmp", "sys_a0_b3",
"?? sub_function",
};
char *biosB0n[256] = {
// 0x00
"SysMalloc", "sys_b0_01", "sys_b0_02", "sys_b0_03",
"sys_b0_04", "sys_b0_05", "sys_b0_06", "DeliverEvent",
"OpenEvent", "CloseEvent", "WaitEvent", "TestEvent",
"EnableEvent", "DisableEvent", "OpenTh", "CloseTh",
// 0x10
"ChangeTh", "sys_b0_11", "InitPAD", "StartPAD",
"StopPAD", "PAD_init", "PAD_dr", "ReturnFromExecption",
"ResetEntryInt", "HookEntryInt", "sys_b0_1a", "sys_b0_1b",
"sys_b0_1c", "sys_b0_1d", "sys_b0_1e", "sys_b0_1f",
// 0x20
"UnDeliverEvent", "sys_b0_21", "sys_b0_22", "sys_b0_23",
"sys_b0_24", "sys_b0_25", "sys_b0_26", "sys_b0_27",
"sys_b0_28", "sys_b0_29", "sys_b0_2a", "sys_b0_2b",
"sys_b0_2c", "sys_b0_2d", "sys_b0_2e", "sys_b0_2f",
// 0x30
"sys_b0_30", "sys_b0_31", "open", "lseek",
"read", "write", "close", "ioctl",
"exit", "sys_b0_39", "getc", "putc",
"getchar", "putchar", "gets", "puts",
// 0x40
"cd", "format", "firstfile", "nextfile",
"rename", "delete", "undelete", "AddDevice",
"RemoteDevice", "PrintInstalledDevices", "InitCARD", "StartCARD",
"StopCARD", "sys_b0_4d", "_card_write", "_card_read",
// 0x50
"_new_card", "Krom2RawAdd", "sys_b0_52", "sys_b0_53",
"_get_errno", "_get_error", "GetC0Table", "GetB0Table",
"_card_chan", "sys_b0_59", "sys_b0_5a", "ChangeClearPAD",
"_card_status", "_card_wait",
};
char *biosC0n[256] = {
// 0x00
"InitRCnt", "InitException", "SysEnqIntRP", "SysDeqIntRP",
"get_free_EvCB_slot", "get_free_TCB_slot", "ExceptionHandler", "InstallExeptionHandler",
"SysInitMemory", "SysInitKMem", "ChangeClearRCnt", "SystemError",
"InitDefInt", "sys_c0_0d", "sys_c0_0e", "sys_c0_0f",
// 0x10
"sys_c0_10", "sys_c0_11", "InstallDevices", "FlushStfInOutPut",
"sys_c0_14", "_cdevinput", "_cdevscan", "_circgetc",
"_circputc", "ioabort", "sys_c0_1a", "KernelRedirect",
"PatchAOTable",
};
//#define r0 (psxRegs.GPR.n.r0)
#define at (psxRegs.GPR.n.at)
#define v0 (psxRegs.GPR.n.v0)
#define v1 (psxRegs.GPR.n.v1)
#define a0 (psxRegs.GPR.n.a0)
#define a1 (psxRegs.GPR.n.a1)
#define a2 (psxRegs.GPR.n.a2)
#define a3 (psxRegs.GPR.n.a3)
#define t0 (psxRegs.GPR.n.t0)
#define t1 (psxRegs.GPR.n.t1)
#define t2 (psxRegs.GPR.n.t2)
#define t3 (psxRegs.GPR.n.t3)
#define t4 (psxRegs.GPR.n.t4)
#define t5 (psxRegs.GPR.n.t5)
#define t6 (psxRegs.GPR.n.t6)
#define t7 (psxRegs.GPR.n.t7)
#define t8 (psxRegs.GPR.n.t8)
#define t9 (psxRegs.GPR.n.t9)
#define s0 (psxRegs.GPR.n.s0)
#define s1 (psxRegs.GPR.n.s1)
#define s2 (psxRegs.GPR.n.s2)
#define s3 (psxRegs.GPR.n.s3)
#define s4 (psxRegs.GPR.n.s4)
#define s5 (psxRegs.GPR.n.s5)
#define s6 (psxRegs.GPR.n.s6)
#define s7 (psxRegs.GPR.n.s7)
#define k0 (psxRegs.GPR.n.k0)
#define k1 (psxRegs.GPR.n.k1)
#define gp (psxRegs.GPR.n.gp)
#define sp (psxRegs.GPR.n.sp)
#define fp (psxRegs.GPR.n.s8)
#define ra (psxRegs.GPR.n.ra)
#define pc0 (psxRegs.pc)
#define SANE_PSXM(mem) ((u8*)(psxMemRLUT[(mem) >> 16] + ((mem) & 0xffff)))
#define Ra0 ((char*)SANE_PSXM(a0))
#define Ra1 ((char*)SANE_PSXM(a1))
#define Ra2 ((char*)SANE_PSXM(a2))
#define Ra3 ((char*)SANE_PSXM(a3))
#define Rv0 ((char*)SANE_PSXM(v0))
#define Rsp ((char*)SANE_PSXM(sp))
typedef struct _malloc_chunk {
unsigned long stat;
unsigned long size;
struct _malloc_chunk *fd;
struct _malloc_chunk *bk;
} malloc_chunk;
#define INUSE 0x1
typedef struct {
u32 desc;
s32 status;
s32 mode;
u32 fhandler;
} EvCB[32];
#define EvStUNUSED 0x0000
#define EvStWAIT 0x1000
#define EvStACTIVE 0x2000
#define EvStALREADY 0x4000
#define EvMdINTR 0x1000
#define EvMdNOINTR 0x2000
/*
typedef struct {
s32 next;
s32 func1;
s32 func2;
s32 pad;
} SysRPst;
*/
typedef struct {
s32 status;
s32 mode;
u32 reg[32];
u32 func;
} TCB;
typedef struct {
u32 _pc0;
u32 gp0;
u32 t_addr;
u32 t_size;
u32 d_addr;
u32 d_size;
u32 b_addr;
u32 b_size;
u32 S_addr;
u32 s_size;
u32 _sp, _fp, _gp, ret, base;
} EXEC;
struct DIRENTRY {
char name[20];
s32 attr;
s32 size;
struct DIRENTRY *next;
s32 head;
char system[4];
};
typedef struct {
char name[32];
u32 mode;
u32 offset;
u32 size;
u32 mcfile;
} FileDesc;
static u32 *jmp_int = NULL;
static int *pad_buf = NULL;
static char *pad_buf1 = NULL, *pad_buf2 = NULL;
static int pad_buf1len, pad_buf2len;
static int pad_stopped = 0;
static u32 regs[35];
static EvCB *EventCB;
static EvCB *HwEV; // 0xf0
static EvCB *EvEV; // 0xf1
static EvCB *RcEV; // 0xf2
static EvCB *UeEV; // 0xf3
static EvCB *SwEV; // 0xf4
static EvCB *ThEV; // 0xff
static u32 *heap_addr = NULL;
static u32 SysIntRP[8];
static int CardState = -1;
static TCB ThreadCB[8];
static int CurThread = 0;
static FileDesc FDesc[32];
static u32 card_active_chan = 0;
bool hleSoftCall = FALSE;
static inline void softCall(u32 pc) {
pc0 = pc;
ra = 0x80001000;
hleSoftCall = TRUE;
while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
hleSoftCall = FALSE;
}
static inline void softCall2(u32 pc) {
u32 sra = ra;
pc0 = pc;
ra = 0x80001000;
hleSoftCall = TRUE;
while (pc0 != 0x80001000) psxCpu->ExecuteBlock();
ra = sra;
hleSoftCall = FALSE;
}
static inline void DeliverEvent(u32 ev, u32 spec) {
if (EventCB[ev][spec].status != SWAP32(EvStACTIVE)) return;
// EventCB[ev][spec].status = SWAP32(EvStALREADY);
if (EventCB[ev][spec].mode == SWAP32(EvMdINTR)) {
softCall2(SWAP32(EventCB[ev][spec].fhandler));
} else EventCB[ev][spec].status = SWAP32(EvStALREADY);
}
static unsigned interrupt_r26=0x8004E8B0;
static inline void SaveRegs() {
memcpy(regs, psxRegs.GPR.r, 32*4);
regs[32] = psxRegs.GPR.n.lo;
regs[33] = psxRegs.GPR.n.hi;
regs[34] = psxRegs.pc;
}
static inline void LoadRegs() {
memcpy(psxRegs.GPR.r, regs, 32*4);
psxRegs.GPR.n.lo = regs[32];
psxRegs.GPR.n.hi = regs[33];
}
/* *
// *
// *
// System calls A0 */
#define buread(Ra1, slot, length) { \
/*SysPrintf("read %d: %x,%x (%s)\n", FDesc[1 + slot].mcfile, FDesc[1 + slot].offset, a2, Mcd##slot##Data + 128 * FDesc[1 + slot].mcfile + 0xa);*/ \
ptr = Mcd##slot##Data + 8192 * FDesc[1 + slot].mcfile + FDesc[1 + slot].offset; \
memcpy(Ra1, ptr, length); \
if (FDesc[1 + slot].mode & 0x8000) { \
DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
v0 = 0; } \
else v0 = length; \
FDesc[1 + slot].offset += v0; \
}
#define buwrite(Ra1, slot, length) { \
u32 offset = + 8192 * FDesc[1 + slot].mcfile + FDesc[1 + slot].offset; \
/*SysPrintf("write %d: %x,%x\n", FDesc[1 + slot].mcfile, FDesc[1 + slot].offset, a2);*/ \
ptr = Mcd##slot##Data + offset; \
memcpy(ptr, Ra1, length); \
FDesc[1 + slot].offset += length; \
SaveMcdByNum(slot); \
mcd##slot##Written = 1; \
if (FDesc[1 + slot].mode & 0x8000) { \
DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
v0 = 0; } \
else v0 = length; \
}
/* Internally redirects to "FileRead(fd,tempbuf,1)".*/
/* For some strange reason, the returned character is sign-expanded; */
/* So if a return value of FFFFFFFFh could mean either character FFh, or error. */
/* TODO FIX ME : Properly implement this behaviour */
void psxBios_getc(void) // 0x03, 0x35
{
char *ptr;
void *pa1 = Ra1;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x03]);
#endif
v0 = -1;
if (pa1) {
switch (a0) {
case 2: buread(pa1, 1, 1); break;
case 3: buread(pa1, 2, 1); break;
}
}
pc0 = ra;
}
/* Copy of psxBios_write, except size is 1. */
void psxBios_putc(void) // 0x09, 0x3B
{
char *ptr;
void *pa1 = Ra1;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x09]);
#endif
v0 = -1;
if (!pa1) {
pc0 = ra;
return;
}
if (a0 == 1) { // stdout
char *ptr = (char *)pa1;
v0 = a2;
while (a2 > 0) {
printf("%c", *ptr++); a2--;
}
pc0 = ra; return;
}
switch (a0) {
case 2: buwrite(pa1, 1, 1); break;
case 3: buwrite(pa1, 2, 1); break;
}
pc0 = ra;
}
void psxBios_todigit(void) // 0x0a
{
int c = a0;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x0a]);
#endif
c &= 0xFF;
if (c >= 0x30 && c < 0x3A) {
c -= 0x30;
}
else if (c > 0x60 && c < 0x7B) {
c -= 0x20;
}
else if (c > 0x40 && c < 0x5B) {
c = c - 0x41 + 10;
}
else if (c >= 0x80) {
c = -1;
}
else
{
c = 0x0098967F;
}
v0 = c;
pc0 = ra;
}
void psxBios_abs() { // 0x0e
if ((s32)a0 < 0) v0 = -(s32)a0;
else v0 = a0;
pc0 = ra;
}
void psxBios_labs() { // 0x0f
psxBios_abs();
}
void psxBios_atoi() { // 0x10
s32 n = 0, f = 0;
char *p = (char *)Ra0;
for (;;p++) {
switch (*p) {
case ' ': case '\t': continue;
case '-': f++;
case '+': p++;
}
break;
}
while (*p >= '0' && *p <= '9') {
n = n * 10 + *p++ - '0';
}
v0 = (f ? -n : n);
pc0 = ra;
}
void psxBios_atol() { // 0x11
psxBios_atoi();
}
void psxBios_setjmp() { // 0x13
u32 *jmp_buf = (u32 *)Ra0;
int i;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x13]);
#endif
jmp_buf[0] = SWAP32(ra);
jmp_buf[1] = SWAP32(sp);
jmp_buf[2] = SWAP32(fp);
for (i=0; i<8; i++) // s0-s7
jmp_buf[3+i] = SWAP32(psxRegs.GPR.r[16+i]);
jmp_buf[11] = SWAP32(gp);
v0 = 0; pc0 = ra;
}
void psxBios_longjmp() { // 0x14
u32 *jmp_buf = (u32 *)Ra0;
int i;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x14]);
#endif
ra = SWAP32(jmp_buf[0]); /* ra */
sp = SWAP32(jmp_buf[1]); /* sp */
fp = SWAP32(jmp_buf[2]); /* fp */
for (i=0; i<8; i++) // s0-s7
psxRegs.GPR.r[16+i] = SWAP32(jmp_buf[3+i]);
gp = SWAP32(jmp_buf[11]); /* gp */
v0 = a1; pc0 = ra;
}
void psxBios_strcat() { // 0x15
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s: %s, %s\n", biosA0n[0x15], Ra0, Ra1);
#endif
if (a0 == 0 || a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
while (*p1++);
--p1;
while ((*p1++ = *p2++) != '\0');
v0 = a0; pc0 = ra;
}
void psxBios_strncat() { // 0x16
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
s32 n = a2;
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x16], Ra0, a0, Ra1, a1, a2);
#endif
if (a0 == 0 || a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
while (*p1++);
--p1;
while ((*p1++ = *p2++) != '\0') {
if (--n < 0) {
*--p1 = '\0';
break;
}
}
v0 = a0; pc0 = ra;
}
void psxBios_strcmp() { // 0x17
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
s32 n=0;
if (a0 == 0 && a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
else if (a0 == 0 && a1 != 0)
{
v0 = -1;
pc0 = ra;
return;
}
else if (a0 != 0 && a1 == 0)
{
v0 = 1;
pc0 = ra;
return;
}
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x)\n", biosA0n[0x17], Ra0, a0, Ra1, a1);
#endif
while (*p1 == *p2++) {
n++;
if (*p1++ == '\0') {
v1=n-1;
a0+=n;
a1+=n;
v0 = 0;
pc0 = ra;
return;
}
}
v0 = (*p1 - *--p2);
v1 = n;
a0+=n;
a1+=n;
pc0 = ra;
}
void psxBios_strncmp() { // 0x18
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
s32 n = a2;
if (a0 == 0 && a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
else if (a0 == 0 && a1 != 0)
{
v0 = -1;
pc0 = ra;
return;
}
else if (a0 != 0 && a1 == 0)
{
v0 = 1;
pc0 = ra;
return;
}
#ifdef PSXBIOS_LOG
PSXBIOS_LOG("psxBios_%s: %s (%x), %s (%x), %d\n", biosA0n[0x18], Ra0, a0, Ra1, a1, a2);
#endif
while (--n >= 0 && *p1 == *p2++) {
if (*p1++ == '\0') {
v0 = 0;
pc0 = ra;
v1 = a2 - ((a2-n) - 1);
a0 += (a2-n) - 1;
a1 += (a2-n) - 1;
a2 = n;
return;
}
}
v0 = (n < 0 ? 0 : *p1 - *--p2);
pc0 = ra;
v1 = a2 - ((a2-n) - 1);
a0 += (a2-n) - 1;
a1 += (a2-n) - 1;
a2 = n;
}
void psxBios_strcpy() { // 0x19
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
if (a0 == 0 || a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
while ((*p1++ = *p2++) != '\0');
v0 = a0; pc0 = ra;
}
void psxBios_strncpy() { // 0x1a
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
s32 n = a2, i;
if (a0 == 0 || a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
for (i = 0; i < n; i++) {
if ((*p1++ = *p2++) == '\0') {
while (++i < n) {
*p1++ = '\0';
}
v0 = a0; pc0 = ra;
return;
}
}
v0 = a0; pc0 = ra;
}
void psxBios_strlen() { // 0x1b
char *p = (char *)Ra0;
v0 = 0;
if (a0 == 0)
{
pc0 = ra;
return;
}
while (*p++) v0++;
pc0 = ra;
}
void psxBios_index() { // 0x1c
char *p = (char *)Ra0;
if (a0 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
do {
if (*p == a1) {
v0 = a0 + (p - (char *)Ra0);
pc0 = ra;
return;
}
} while (*p++ != '\0');
v0 = 0; pc0 = ra;
}
void psxBios_rindex() { // 0x1d
char *p = (char *)Ra0;
v0 = 0;
if (a0 == 0)
{
pc0 = ra;
return;
}
do {
if (*p == a1)
v0 = a0 + (p - (char *)Ra0);
} while (*p++ != '\0');
pc0 = ra;
}
void psxBios_strchr() { // 0x1e
psxBios_index();
}
void psxBios_strrchr() { // 0x1f
psxBios_rindex();
}
void psxBios_strpbrk() { // 0x20
char *p1 = (char *)Ra0, *p2 = (char *)Ra1, *scanp, c, sc;
while ((c = *p1++) != '\0') {
for (scanp = p2; (sc = *scanp++) != '\0';) {
if (sc == c) {
v0 = a0 + (p1 - 1 - (char *)Ra0);
pc0 = ra;
return;
}
}
}
// BUG: return a0 instead of NULL if not found
v0 = a0; pc0 = ra;
}
void psxBios_strspn() { // 0x21
char *p1, *p2;
for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
if (*p2 == '\0') break;
}
v0 = p1 - (char *)Ra0; pc0 = ra;
}
void psxBios_strcspn() { // 0x22
char *p1, *p2;
for (p1 = (char *)Ra0; *p1 != '\0'; p1++) {
for (p2 = (char *)Ra1; *p2 != '\0' && *p2 != *p1; p2++);
if (*p2 != '\0') break;
}
v0 = p1 - (char *)Ra0; pc0 = ra;
}
void psxBios_strtok() { // 0x23
char *pcA0 = (char *)Ra0;
char *pcRet = strtok(pcA0, (char *)Ra1);
if (pcRet)
v0 = a0 + pcRet - pcA0;
else
v0 = 0;
pc0 = ra;
}
void psxBios_strstr() { // 0x24
char *p = (char *)Ra0, *p1, *p2;
while (*p != '\0') {
p1 = p;
p2 = (char *)Ra1;
while (*p1 != '\0' && *p2 != '\0' && *p1 == *p2) {
p1++; p2++;
}
if (*p2 == '\0') {
v0 = a0 + (p - (char *)Ra0);
pc0 = ra;
return;
}
p++;
}
v0 = 0; pc0 = ra;
}
void psxBios_toupper() { // 0x25
v0 = (s8)(a0 & 0xff);
if (v0 >= 'a' && v0 <= 'z') v0 -= 'a' - 'A';
pc0 = ra;
}
void psxBios_tolower() { // 0x26
v0 = (s8)(a0 & 0xff);
if (v0 >= 'A' && v0 <= 'Z') v0 += 'a' - 'A';
pc0 = ra;
}
void psxBios_bcopy() { // 0x27
char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
v0 = a0;
if (a0 == 0 || a2 > 0x7FFFFFFF)
{
pc0 = ra;
return;
}
while ((s32)a2-- > 0) *p1++ = *p2++;
a2 = 0;
pc0 = ra;
}
void psxBios_bzero() { // 0x28
char *p = (char *)Ra0;
v0 = a0;
/* Same as memset here (See memset below) */
if (a1 > 0x7FFFFFFF || a1 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
else if (a0 == 0)
{
pc0 = ra;
return;
}
while ((s32)a1-- > 0) *p++ = '\0';
a1 = 0;
pc0 = ra;
}
void psxBios_bcmp() { // 0x29
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
if (a0 == 0 || a1 == 0) { v0 = 0; pc0 = ra; return; }
while ((s32)a2-- > 0) {
if (*p1++ != *p2++) {
v0 = *p1 - *p2; // BUG: compare the NEXT byte
pc0 = ra;
return;
}
}
v0 = 0; pc0 = ra;
}
void psxBios_memcpy() { // 0x2a
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
v0 = a0;
if (a0 == 0 || a2 > 0x7FFFFFFF)
{
pc0 = ra;
return;
}
while ((s32)a2-- > 0) {
*p1++ = *p2++;
}
a2 = 0;
pc0 = ra;
}
void psxBios_memset() { // 0x2b
char *p = (char *)Ra0;
v0 = a0;
if (a2 > 0x7FFFFFFF || a2 == 0)
{
v0 = 0;
pc0 = ra;
return;
}
if (a0 == 0)
{
pc0 = ra;
return;
}
while ((s32)a2-- > 0) *p++ = (char)a1;
a2 = 0;
v0 = a0; pc0 = ra;
}
void psxBios_memmove() { // 0x2c
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
v0 = a0;
if (a0 == 0 || a2 > 0x7FFFFFFF)
{
pc0 = ra;
return;
}
if (p2 <= p1 && p2 + a2 > p1) {
a2++; // BUG: copy one more byte here
p1 += a2;
p2 += a2;
while ((s32)a2-- > 0) *--p1 = *--p2;
} else {
while ((s32)a2-- > 0) *p1++ = *p2++;
}
pc0 = ra;
}
void psxBios_memcmp() { // 0x2d
psxBios_bcmp();
}
void psxBios_memchr() { // 0x2e
char *p = (char *)Ra0;
if (a0 == 0 || a2 > 0x7FFFFFFF)
{
pc0 = ra;
return;
}
while ((s32)a2-- > 0) {
if (*p++ != (s8)a1) continue;
v0 = a0 + (p - (char *)Ra0 - 1);
pc0 = ra;
return;
}
v0 = 0; pc0 = ra;
}
void psxBios_rand() { // 0x2f
u32 s = psxMu32(0x9010) * 1103515245 + 12345;
v0 = (s >> 16) & 0x7fff;
psxMu32ref(0x9010) = SWAPu32(s);
pc0 = ra;
}
void psxBios_srand() { // 0x30
psxMu32ref(0x9010) = SWAPu32(a0);
pc0 = ra;
}
static u32 qscmpfunc, qswidth;
static inline int qscmp(char *a, char *b) {
u32 sa0 = a0;
a0 = sa0 + (a - (char *)PSXM(sa0));
a1 = sa0 + (b - (char *)PSXM(sa0));
softCall2(qscmpfunc);
a0 = sa0;
return (s32)v0;
}
static inline void qexchange(char *i, char *j) {
char t;
int n = qswidth;
do {
t = *i;
*i++ = *j;
*j++ = t;
} while (--n);
}
static inline void q3exchange(char *i, char *j, char *k) {