forked from 64kramsystem/qemu-pinning
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathop_helper.c
3258 lines (2766 loc) · 104 KB
/
op_helper.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
/*
* MIPS emulation helpers for qemu.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include "cpu.h"
#include "qemu/host-utils.h"
#include "exec/helper-proto.h"
#if !defined(CONFIG_USER_ONLY)
#include "exec/softmmu_exec.h"
#endif /* !defined(CONFIG_USER_ONLY) */
#ifndef CONFIG_USER_ONLY
static inline void cpu_mips_tlb_flush (CPUMIPSState *env, int flush_global);
#endif
/*****************************************************************************/
/* Exceptions processing helpers */
static inline void QEMU_NORETURN do_raise_exception_err(CPUMIPSState *env,
uint32_t exception,
int error_code,
uintptr_t pc)
{
CPUState *cs = CPU(mips_env_get_cpu(env));
if (exception < EXCP_SC) {
qemu_log("%s: %d %d\n", __func__, exception, error_code);
}
cs->exception_index = exception;
env->error_code = error_code;
if (pc) {
/* now we have a real cpu fault */
cpu_restore_state(cs, pc);
}
cpu_loop_exit(cs);
}
static inline void QEMU_NORETURN do_raise_exception(CPUMIPSState *env,
uint32_t exception,
uintptr_t pc)
{
do_raise_exception_err(env, exception, 0, pc);
}
void helper_raise_exception_err(CPUMIPSState *env, uint32_t exception,
int error_code)
{
do_raise_exception_err(env, exception, error_code, 0);
}
void helper_raise_exception(CPUMIPSState *env, uint32_t exception)
{
do_raise_exception(env, exception, 0);
}
#if defined(CONFIG_USER_ONLY)
#define HELPER_LD(name, insn, type) \
static inline type do_##name(CPUMIPSState *env, target_ulong addr, \
int mem_idx) \
{ \
return (type) insn##_raw(addr); \
}
#else
#define HELPER_LD(name, insn, type) \
static inline type do_##name(CPUMIPSState *env, target_ulong addr, \
int mem_idx) \
{ \
switch (mem_idx) \
{ \
case 0: return (type) cpu_##insn##_kernel(env, addr); break; \
case 1: return (type) cpu_##insn##_super(env, addr); break; \
default: \
case 2: return (type) cpu_##insn##_user(env, addr); break; \
} \
}
#endif
HELPER_LD(lbu, ldub, uint8_t)
HELPER_LD(lw, ldl, int32_t)
#ifdef TARGET_MIPS64
HELPER_LD(ld, ldq, int64_t)
#endif
#undef HELPER_LD
#if defined(CONFIG_USER_ONLY)
#define HELPER_ST(name, insn, type) \
static inline void do_##name(CPUMIPSState *env, target_ulong addr, \
type val, int mem_idx) \
{ \
insn##_raw(addr, val); \
}
#else
#define HELPER_ST(name, insn, type) \
static inline void do_##name(CPUMIPSState *env, target_ulong addr, \
type val, int mem_idx) \
{ \
switch (mem_idx) \
{ \
case 0: cpu_##insn##_kernel(env, addr, val); break; \
case 1: cpu_##insn##_super(env, addr, val); break; \
default: \
case 2: cpu_##insn##_user(env, addr, val); break; \
} \
}
#endif
HELPER_ST(sb, stb, uint8_t)
HELPER_ST(sw, stl, uint32_t)
#ifdef TARGET_MIPS64
HELPER_ST(sd, stq, uint64_t)
#endif
#undef HELPER_ST
target_ulong helper_clo (target_ulong arg1)
{
return clo32(arg1);
}
target_ulong helper_clz (target_ulong arg1)
{
return clz32(arg1);
}
#if defined(TARGET_MIPS64)
target_ulong helper_dclo (target_ulong arg1)
{
return clo64(arg1);
}
target_ulong helper_dclz (target_ulong arg1)
{
return clz64(arg1);
}
#endif /* TARGET_MIPS64 */
/* 64 bits arithmetic for 32 bits hosts */
static inline uint64_t get_HILO(CPUMIPSState *env)
{
return ((uint64_t)(env->active_tc.HI[0]) << 32) | (uint32_t)env->active_tc.LO[0];
}
static inline target_ulong set_HIT0_LO(CPUMIPSState *env, uint64_t HILO)
{
target_ulong tmp;
env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
tmp = env->active_tc.HI[0] = (int32_t)(HILO >> 32);
return tmp;
}
static inline target_ulong set_HI_LOT0(CPUMIPSState *env, uint64_t HILO)
{
target_ulong tmp = env->active_tc.LO[0] = (int32_t)(HILO & 0xFFFFFFFF);
env->active_tc.HI[0] = (int32_t)(HILO >> 32);
return tmp;
}
/* Multiplication variants of the vr54xx. */
target_ulong helper_muls(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, 0 - ((int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2));
}
target_ulong helper_mulsu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, 0 - (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_macc(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (int64_t)get_HILO(env) + (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_macchi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (int64_t)get_HILO(env) + (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_maccu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (uint64_t)get_HILO(env) +
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_macchiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (uint64_t)get_HILO(env) +
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_msac(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (int64_t)get_HILO(env) - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_msachi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (int64_t)get_HILO(env) - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_msacu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HI_LOT0(env, (uint64_t)get_HILO(env) -
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_msachiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (uint64_t)get_HILO(env) -
(uint64_t)(uint32_t)arg1 * (uint64_t)(uint32_t)arg2);
}
target_ulong helper_mulhi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (int64_t)(int32_t)arg1 * (int64_t)(int32_t)arg2);
}
target_ulong helper_mulhiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
target_ulong helper_mulshi(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, 0 - (int64_t)(int32_t)arg1 *
(int64_t)(int32_t)arg2);
}
target_ulong helper_mulshiu(CPUMIPSState *env, target_ulong arg1,
target_ulong arg2)
{
return set_HIT0_LO(env, 0 - (uint64_t)(uint32_t)arg1 *
(uint64_t)(uint32_t)arg2);
}
#ifndef CONFIG_USER_ONLY
static inline hwaddr do_translate_address(CPUMIPSState *env,
target_ulong address,
int rw)
{
hwaddr lladdr;
lladdr = cpu_mips_translate_address(env, address, rw);
if (lladdr == -1LL) {
cpu_loop_exit(CPU(mips_env_get_cpu(env)));
} else {
return lladdr;
}
}
#define HELPER_LD_ATOMIC(name, insn) \
target_ulong helper_##name(CPUMIPSState *env, target_ulong arg, int mem_idx) \
{ \
env->lladdr = do_translate_address(env, arg, 0); \
env->llval = do_##insn(env, arg, mem_idx); \
return env->llval; \
}
HELPER_LD_ATOMIC(ll, lw)
#ifdef TARGET_MIPS64
HELPER_LD_ATOMIC(lld, ld)
#endif
#undef HELPER_LD_ATOMIC
#define HELPER_ST_ATOMIC(name, ld_insn, st_insn, almask) \
target_ulong helper_##name(CPUMIPSState *env, target_ulong arg1, \
target_ulong arg2, int mem_idx) \
{ \
target_long tmp; \
\
if (arg2 & almask) { \
env->CP0_BadVAddr = arg2; \
helper_raise_exception(env, EXCP_AdES); \
} \
if (do_translate_address(env, arg2, 1) == env->lladdr) { \
tmp = do_##ld_insn(env, arg2, mem_idx); \
if (tmp == env->llval) { \
do_##st_insn(env, arg2, arg1, mem_idx); \
return 1; \
} \
} \
return 0; \
}
HELPER_ST_ATOMIC(sc, lw, sw, 0x3)
#ifdef TARGET_MIPS64
HELPER_ST_ATOMIC(scd, ld, sd, 0x7)
#endif
#undef HELPER_ST_ATOMIC
#endif
#ifdef TARGET_WORDS_BIGENDIAN
#define GET_LMASK(v) ((v) & 3)
#define GET_OFFSET(addr, offset) (addr + (offset))
#else
#define GET_LMASK(v) (((v) & 3) ^ 3)
#define GET_OFFSET(addr, offset) (addr - (offset))
#endif
void helper_swl(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
do_sb(env, arg2, (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK(arg2) <= 2)
do_sb(env, GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK(arg2) <= 1)
do_sb(env, GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK(arg2) == 0)
do_sb(env, GET_OFFSET(arg2, 3), (uint8_t)arg1, mem_idx);
}
void helper_swr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
do_sb(env, arg2, (uint8_t)arg1, mem_idx);
if (GET_LMASK(arg2) >= 1)
do_sb(env, GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK(arg2) >= 2)
do_sb(env, GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK(arg2) == 3)
do_sb(env, GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24), mem_idx);
}
#if defined(TARGET_MIPS64)
/* "half" load and stores. We must do the memory access inline,
or fault handling won't work. */
#ifdef TARGET_WORDS_BIGENDIAN
#define GET_LMASK64(v) ((v) & 7)
#else
#define GET_LMASK64(v) (((v) & 7) ^ 7)
#endif
void helper_sdl(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
do_sb(env, arg2, (uint8_t)(arg1 >> 56), mem_idx);
if (GET_LMASK64(arg2) <= 6)
do_sb(env, GET_OFFSET(arg2, 1), (uint8_t)(arg1 >> 48), mem_idx);
if (GET_LMASK64(arg2) <= 5)
do_sb(env, GET_OFFSET(arg2, 2), (uint8_t)(arg1 >> 40), mem_idx);
if (GET_LMASK64(arg2) <= 4)
do_sb(env, GET_OFFSET(arg2, 3), (uint8_t)(arg1 >> 32), mem_idx);
if (GET_LMASK64(arg2) <= 3)
do_sb(env, GET_OFFSET(arg2, 4), (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK64(arg2) <= 2)
do_sb(env, GET_OFFSET(arg2, 5), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK64(arg2) <= 1)
do_sb(env, GET_OFFSET(arg2, 6), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK64(arg2) <= 0)
do_sb(env, GET_OFFSET(arg2, 7), (uint8_t)arg1, mem_idx);
}
void helper_sdr(CPUMIPSState *env, target_ulong arg1, target_ulong arg2,
int mem_idx)
{
do_sb(env, arg2, (uint8_t)arg1, mem_idx);
if (GET_LMASK64(arg2) >= 1)
do_sb(env, GET_OFFSET(arg2, -1), (uint8_t)(arg1 >> 8), mem_idx);
if (GET_LMASK64(arg2) >= 2)
do_sb(env, GET_OFFSET(arg2, -2), (uint8_t)(arg1 >> 16), mem_idx);
if (GET_LMASK64(arg2) >= 3)
do_sb(env, GET_OFFSET(arg2, -3), (uint8_t)(arg1 >> 24), mem_idx);
if (GET_LMASK64(arg2) >= 4)
do_sb(env, GET_OFFSET(arg2, -4), (uint8_t)(arg1 >> 32), mem_idx);
if (GET_LMASK64(arg2) >= 5)
do_sb(env, GET_OFFSET(arg2, -5), (uint8_t)(arg1 >> 40), mem_idx);
if (GET_LMASK64(arg2) >= 6)
do_sb(env, GET_OFFSET(arg2, -6), (uint8_t)(arg1 >> 48), mem_idx);
if (GET_LMASK64(arg2) == 7)
do_sb(env, GET_OFFSET(arg2, -7), (uint8_t)(arg1 >> 56), mem_idx);
}
#endif /* TARGET_MIPS64 */
static const int multiple_regs[] = { 16, 17, 18, 19, 20, 21, 22, 23, 30 };
void helper_lwm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
env->active_tc.gpr[multiple_regs[i]] =
(target_long)do_lw(env, addr, mem_idx);
addr += 4;
}
}
if (do_r31) {
env->active_tc.gpr[31] = (target_long)do_lw(env, addr, mem_idx);
}
}
void helper_swm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
do_sw(env, addr, env->active_tc.gpr[multiple_regs[i]], mem_idx);
addr += 4;
}
}
if (do_r31) {
do_sw(env, addr, env->active_tc.gpr[31], mem_idx);
}
}
#if defined(TARGET_MIPS64)
void helper_ldm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
env->active_tc.gpr[multiple_regs[i]] = do_ld(env, addr, mem_idx);
addr += 8;
}
}
if (do_r31) {
env->active_tc.gpr[31] = do_ld(env, addr, mem_idx);
}
}
void helper_sdm(CPUMIPSState *env, target_ulong addr, target_ulong reglist,
uint32_t mem_idx)
{
target_ulong base_reglist = reglist & 0xf;
target_ulong do_r31 = reglist & 0x10;
if (base_reglist > 0 && base_reglist <= ARRAY_SIZE (multiple_regs)) {
target_ulong i;
for (i = 0; i < base_reglist; i++) {
do_sd(env, addr, env->active_tc.gpr[multiple_regs[i]], mem_idx);
addr += 8;
}
}
if (do_r31) {
do_sd(env, addr, env->active_tc.gpr[31], mem_idx);
}
}
#endif
#ifndef CONFIG_USER_ONLY
/* SMP helpers. */
static bool mips_vpe_is_wfi(MIPSCPU *c)
{
CPUState *cpu = CPU(c);
CPUMIPSState *env = &c->env;
/* If the VPE is halted but otherwise active, it means it's waiting for
an interrupt. */
return cpu->halted && mips_vpe_active(env);
}
static inline void mips_vpe_wake(MIPSCPU *c)
{
/* Dont set ->halted = 0 directly, let it be done via cpu_has_work
because there might be other conditions that state that c should
be sleeping. */
cpu_interrupt(CPU(c), CPU_INTERRUPT_WAKE);
}
static inline void mips_vpe_sleep(MIPSCPU *cpu)
{
CPUState *cs = CPU(cpu);
/* The VPE was shut off, really go to bed.
Reset any old _WAKE requests. */
cs->halted = 1;
cpu_reset_interrupt(cs, CPU_INTERRUPT_WAKE);
}
static inline void mips_tc_wake(MIPSCPU *cpu, int tc)
{
CPUMIPSState *c = &cpu->env;
/* FIXME: TC reschedule. */
if (mips_vpe_active(c) && !mips_vpe_is_wfi(cpu)) {
mips_vpe_wake(cpu);
}
}
static inline void mips_tc_sleep(MIPSCPU *cpu, int tc)
{
CPUMIPSState *c = &cpu->env;
/* FIXME: TC reschedule. */
if (!mips_vpe_active(c)) {
mips_vpe_sleep(cpu);
}
}
/**
* mips_cpu_map_tc:
* @env: CPU from which mapping is performed.
* @tc: Should point to an int with the value of the global TC index.
*
* This function will transform @tc into a local index within the
* returned #CPUMIPSState.
*/
/* FIXME: This code assumes that all VPEs have the same number of TCs,
which depends on runtime setup. Can probably be fixed by
walking the list of CPUMIPSStates. */
static CPUMIPSState *mips_cpu_map_tc(CPUMIPSState *env, int *tc)
{
MIPSCPU *cpu;
CPUState *cs;
CPUState *other_cs;
int vpe_idx;
int tc_idx = *tc;
if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP))) {
/* Not allowed to address other CPUs. */
*tc = env->current_tc;
return env;
}
cs = CPU(mips_env_get_cpu(env));
vpe_idx = tc_idx / cs->nr_threads;
*tc = tc_idx % cs->nr_threads;
other_cs = qemu_get_cpu(vpe_idx);
if (other_cs == NULL) {
return env;
}
cpu = MIPS_CPU(other_cs);
return &cpu->env;
}
/* The per VPE CP0_Status register shares some fields with the per TC
CP0_TCStatus registers. These fields are wired to the same registers,
so changes to either of them should be reflected on both registers.
Also, EntryHi shares the bottom 8 bit ASID with TCStauts.
These helper call synchronizes the regs for a given cpu. */
/* Called for updates to CP0_Status. */
static void sync_c0_status(CPUMIPSState *env, CPUMIPSState *cpu, int tc)
{
int32_t tcstatus, *tcst;
uint32_t v = cpu->CP0_Status;
uint32_t cu, mx, asid, ksu;
uint32_t mask = ((1 << CP0TCSt_TCU3)
| (1 << CP0TCSt_TCU2)
| (1 << CP0TCSt_TCU1)
| (1 << CP0TCSt_TCU0)
| (1 << CP0TCSt_TMX)
| (3 << CP0TCSt_TKSU)
| (0xff << CP0TCSt_TASID));
cu = (v >> CP0St_CU0) & 0xf;
mx = (v >> CP0St_MX) & 0x1;
ksu = (v >> CP0St_KSU) & 0x3;
asid = env->CP0_EntryHi & 0xff;
tcstatus = cu << CP0TCSt_TCU0;
tcstatus |= mx << CP0TCSt_TMX;
tcstatus |= ksu << CP0TCSt_TKSU;
tcstatus |= asid;
if (tc == cpu->current_tc) {
tcst = &cpu->active_tc.CP0_TCStatus;
} else {
tcst = &cpu->tcs[tc].CP0_TCStatus;
}
*tcst &= ~mask;
*tcst |= tcstatus;
compute_hflags(cpu);
}
/* Called for updates to CP0_TCStatus. */
static void sync_c0_tcstatus(CPUMIPSState *cpu, int tc,
target_ulong v)
{
uint32_t status;
uint32_t tcu, tmx, tasid, tksu;
uint32_t mask = ((1U << CP0St_CU3)
| (1 << CP0St_CU2)
| (1 << CP0St_CU1)
| (1 << CP0St_CU0)
| (1 << CP0St_MX)
| (3 << CP0St_KSU));
tcu = (v >> CP0TCSt_TCU0) & 0xf;
tmx = (v >> CP0TCSt_TMX) & 0x1;
tasid = v & 0xff;
tksu = (v >> CP0TCSt_TKSU) & 0x3;
status = tcu << CP0St_CU0;
status |= tmx << CP0St_MX;
status |= tksu << CP0St_KSU;
cpu->CP0_Status &= ~mask;
cpu->CP0_Status |= status;
/* Sync the TASID with EntryHi. */
cpu->CP0_EntryHi &= ~0xff;
cpu->CP0_EntryHi = tasid;
compute_hflags(cpu);
}
/* Called for updates to CP0_EntryHi. */
static void sync_c0_entryhi(CPUMIPSState *cpu, int tc)
{
int32_t *tcst;
uint32_t asid, v = cpu->CP0_EntryHi;
asid = v & 0xff;
if (tc == cpu->current_tc) {
tcst = &cpu->active_tc.CP0_TCStatus;
} else {
tcst = &cpu->tcs[tc].CP0_TCStatus;
}
*tcst &= ~0xff;
*tcst |= asid;
}
/* CP0 helpers */
target_ulong helper_mfc0_mvpcontrol(CPUMIPSState *env)
{
return env->mvp->CP0_MVPControl;
}
target_ulong helper_mfc0_mvpconf0(CPUMIPSState *env)
{
return env->mvp->CP0_MVPConf0;
}
target_ulong helper_mfc0_mvpconf1(CPUMIPSState *env)
{
return env->mvp->CP0_MVPConf1;
}
target_ulong helper_mfc0_random(CPUMIPSState *env)
{
return (int32_t)cpu_mips_get_random(env);
}
target_ulong helper_mfc0_tcstatus(CPUMIPSState *env)
{
return env->active_tc.CP0_TCStatus;
}
target_ulong helper_mftc0_tcstatus(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCStatus;
else
return other->tcs[other_tc].CP0_TCStatus;
}
target_ulong helper_mfc0_tcbind(CPUMIPSState *env)
{
return env->active_tc.CP0_TCBind;
}
target_ulong helper_mftc0_tcbind(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCBind;
else
return other->tcs[other_tc].CP0_TCBind;
}
target_ulong helper_mfc0_tcrestart(CPUMIPSState *env)
{
return env->active_tc.PC;
}
target_ulong helper_mftc0_tcrestart(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.PC;
else
return other->tcs[other_tc].PC;
}
target_ulong helper_mfc0_tchalt(CPUMIPSState *env)
{
return env->active_tc.CP0_TCHalt;
}
target_ulong helper_mftc0_tchalt(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCHalt;
else
return other->tcs[other_tc].CP0_TCHalt;
}
target_ulong helper_mfc0_tccontext(CPUMIPSState *env)
{
return env->active_tc.CP0_TCContext;
}
target_ulong helper_mftc0_tccontext(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCContext;
else
return other->tcs[other_tc].CP0_TCContext;
}
target_ulong helper_mfc0_tcschedule(CPUMIPSState *env)
{
return env->active_tc.CP0_TCSchedule;
}
target_ulong helper_mftc0_tcschedule(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCSchedule;
else
return other->tcs[other_tc].CP0_TCSchedule;
}
target_ulong helper_mfc0_tcschefback(CPUMIPSState *env)
{
return env->active_tc.CP0_TCScheFBack;
}
target_ulong helper_mftc0_tcschefback(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
return other->active_tc.CP0_TCScheFBack;
else
return other->tcs[other_tc].CP0_TCScheFBack;
}
target_ulong helper_mfc0_count(CPUMIPSState *env)
{
return (int32_t)cpu_mips_get_count(env);
}
target_ulong helper_mftc0_entryhi(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
return other->CP0_EntryHi;
}
target_ulong helper_mftc0_cause(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
int32_t tccause;
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc) {
tccause = other->CP0_Cause;
} else {
tccause = other->CP0_Cause;
}
return tccause;
}
target_ulong helper_mftc0_status(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
return other->CP0_Status;
}
target_ulong helper_mfc0_lladdr(CPUMIPSState *env)
{
return (int32_t)(env->lladdr >> env->CP0_LLAddr_shift);
}
target_ulong helper_mfc0_watchlo(CPUMIPSState *env, uint32_t sel)
{
return (int32_t)env->CP0_WatchLo[sel];
}
target_ulong helper_mfc0_watchhi(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchHi[sel];
}
target_ulong helper_mfc0_debug(CPUMIPSState *env)
{
target_ulong t0 = env->CP0_Debug;
if (env->hflags & MIPS_HFLAG_DM)
t0 |= 1 << CP0DB_DM;
return t0;
}
target_ulong helper_mftc0_debug(CPUMIPSState *env)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
int32_t tcstatus;
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
if (other_tc == other->current_tc)
tcstatus = other->active_tc.CP0_Debug_tcstatus;
else
tcstatus = other->tcs[other_tc].CP0_Debug_tcstatus;
/* XXX: Might be wrong, check with EJTAG spec. */
return (other->CP0_Debug & ~((1 << CP0DB_SSt) | (1 << CP0DB_Halt))) |
(tcstatus & ((1 << CP0DB_SSt) | (1 << CP0DB_Halt)));
}
#if defined(TARGET_MIPS64)
target_ulong helper_dmfc0_tcrestart(CPUMIPSState *env)
{
return env->active_tc.PC;
}
target_ulong helper_dmfc0_tchalt(CPUMIPSState *env)
{
return env->active_tc.CP0_TCHalt;
}
target_ulong helper_dmfc0_tccontext(CPUMIPSState *env)
{
return env->active_tc.CP0_TCContext;
}
target_ulong helper_dmfc0_tcschedule(CPUMIPSState *env)
{
return env->active_tc.CP0_TCSchedule;
}
target_ulong helper_dmfc0_tcschefback(CPUMIPSState *env)
{
return env->active_tc.CP0_TCScheFBack;
}
target_ulong helper_dmfc0_lladdr(CPUMIPSState *env)
{
return env->lladdr >> env->CP0_LLAddr_shift;
}
target_ulong helper_dmfc0_watchlo(CPUMIPSState *env, uint32_t sel)
{
return env->CP0_WatchLo[sel];
}
#endif /* TARGET_MIPS64 */
void helper_mtc0_index(CPUMIPSState *env, target_ulong arg1)
{
int num = 1;
unsigned int tmp = env->tlb->nb_tlb;
do {
tmp >>= 1;
num <<= 1;
} while (tmp);
env->CP0_Index = (env->CP0_Index & 0x80000000) | (arg1 & (num - 1));
}
void helper_mtc0_mvpcontrol(CPUMIPSState *env, target_ulong arg1)
{
uint32_t mask = 0;
uint32_t newval;
if (env->CP0_VPEConf0 & (1 << CP0VPEC0_MVP))
mask |= (1 << CP0MVPCo_CPA) | (1 << CP0MVPCo_VPC) |
(1 << CP0MVPCo_EVP);
if (env->mvp->CP0_MVPControl & (1 << CP0MVPCo_VPC))
mask |= (1 << CP0MVPCo_STLB);
newval = (env->mvp->CP0_MVPControl & ~mask) | (arg1 & mask);
// TODO: Enable/disable shared TLB, enable/disable VPEs.
env->mvp->CP0_MVPControl = newval;
}
void helper_mtc0_vpecontrol(CPUMIPSState *env, target_ulong arg1)
{
uint32_t mask;
uint32_t newval;
mask = (1 << CP0VPECo_YSI) | (1 << CP0VPECo_GSI) |
(1 << CP0VPECo_TE) | (0xff << CP0VPECo_TargTC);
newval = (env->CP0_VPEControl & ~mask) | (arg1 & mask);
/* Yield scheduler intercept not implemented. */
/* Gating storage scheduler intercept not implemented. */
// TODO: Enable/disable TCs.
env->CP0_VPEControl = newval;
}
void helper_mttc0_vpecontrol(CPUMIPSState *env, target_ulong arg1)
{
int other_tc = env->CP0_VPEControl & (0xff << CP0VPECo_TargTC);
CPUMIPSState *other = mips_cpu_map_tc(env, &other_tc);
uint32_t mask;
uint32_t newval;
mask = (1 << CP0VPECo_YSI) | (1 << CP0VPECo_GSI) |
(1 << CP0VPECo_TE) | (0xff << CP0VPECo_TargTC);
newval = (other->CP0_VPEControl & ~mask) | (arg1 & mask);
/* TODO: Enable/disable TCs. */
other->CP0_VPEControl = newval;