summaryrefslogtreecommitdiffstats
path: root/target-alpha/op_helper.c
blob: b2abf6c7853d94f4df5def256b23a38a2e6cfb84 (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
/*
 *  Alpha emulation cpu micro-operations helpers for qemu.
 *
 *  Copyright (c) 2007 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 "exec.h"
#include "host-utils.h"
#include "softfloat.h"
#include "helper.h"

/*****************************************************************************/
/* Exceptions processing helpers */
void helper_excp (int excp, int error)
{
    env->exception_index = excp;
    env->error_code = error;
    cpu_loop_exit();
}

uint64_t helper_load_pcc (void)
{
    /* XXX: TODO */
    return 0;
}

uint64_t helper_load_fpcr (void)
{
    return cpu_alpha_load_fpcr (env);
}

void helper_store_fpcr (uint64_t val)
{
    cpu_alpha_store_fpcr (env, val);
}

static spinlock_t intr_cpu_lock = SPIN_LOCK_UNLOCKED;

uint64_t helper_rs(void)
{
    uint64_t tmp;

    spin_lock(&intr_cpu_lock);
    tmp = env->intr_flag;
    env->intr_flag = 1;
    spin_unlock(&intr_cpu_lock);

    return tmp;
}

uint64_t helper_rc(void)
{
    uint64_t tmp;

    spin_lock(&intr_cpu_lock);
    tmp = env->intr_flag;
    env->intr_flag = 0;
    spin_unlock(&intr_cpu_lock);

    return tmp;
}

uint64_t helper_addqv (uint64_t op1, uint64_t op2)
{
    uint64_t tmp = op1;
    op1 += op2;
    if (unlikely((tmp ^ op2 ^ (-1ULL)) & (tmp ^ op1) & (1ULL << 63))) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    return op1;
}

uint64_t helper_addlv (uint64_t op1, uint64_t op2)
{
    uint64_t tmp = op1;
    op1 = (uint32_t)(op1 + op2);
    if (unlikely((tmp ^ op2 ^ (-1UL)) & (tmp ^ op1) & (1UL << 31))) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    return op1;
}

uint64_t helper_subqv (uint64_t op1, uint64_t op2)
{
    uint64_t res;
    res = op1 - op2;
    if (unlikely((op1 ^ op2) & (res ^ op1) & (1ULL << 63))) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    return res;
}

uint64_t helper_sublv (uint64_t op1, uint64_t op2)
{
    uint32_t res;
    res = op1 - op2;
    if (unlikely((op1 ^ op2) & (res ^ op1) & (1UL << 31))) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    return res;
}

uint64_t helper_mullv (uint64_t op1, uint64_t op2)
{
    int64_t res = (int64_t)op1 * (int64_t)op2;

    if (unlikely((int32_t)res != res)) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    return (int64_t)((int32_t)res);
}

uint64_t helper_mulqv (uint64_t op1, uint64_t op2)
{
    uint64_t tl, th;

    muls64(&tl, &th, op1, op2);
    /* If th != 0 && th != -1, then we had an overflow */
    if (unlikely((th + 1) > 1)) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    return tl;
}

uint64_t helper_umulh (uint64_t op1, uint64_t op2)
{
    uint64_t tl, th;

    mulu64(&tl, &th, op1, op2);
    return th;
}

uint64_t helper_ctpop (uint64_t arg)
{
    return ctpop64(arg);
}

uint64_t helper_ctlz (uint64_t arg)
{
    return clz64(arg);
}

uint64_t helper_cttz (uint64_t arg)
{
    return ctz64(arg);
}

static inline uint64_t byte_zap(uint64_t op, uint8_t mskb)
{
    uint64_t mask;

    mask = 0;
    mask |= ((mskb >> 0) & 1) * 0x00000000000000FFULL;
    mask |= ((mskb >> 1) & 1) * 0x000000000000FF00ULL;
    mask |= ((mskb >> 2) & 1) * 0x0000000000FF0000ULL;
    mask |= ((mskb >> 3) & 1) * 0x00000000FF000000ULL;
    mask |= ((mskb >> 4) & 1) * 0x000000FF00000000ULL;
    mask |= ((mskb >> 5) & 1) * 0x0000FF0000000000ULL;
    mask |= ((mskb >> 6) & 1) * 0x00FF000000000000ULL;
    mask |= ((mskb >> 7) & 1) * 0xFF00000000000000ULL;

    return op & ~mask;
}

uint64_t helper_zap(uint64_t val, uint64_t mask)
{
    return byte_zap(val, mask);
}

uint64_t helper_zapnot(uint64_t val, uint64_t mask)
{
    return byte_zap(val, ~mask);
}

uint64_t helper_cmpbge (uint64_t op1, uint64_t op2)
{
    uint8_t opa, opb, res;
    int i;

    res = 0;
    for (i = 0; i < 8; i++) {
        opa = op1 >> (i * 8);
        opb = op2 >> (i * 8);
        if (opa >= opb)
            res |= 1 << i;
    }
    return res;
}

uint64_t helper_minub8 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    uint8_t opa, opb, opr;
    int i;

    for (i = 0; i < 8; ++i) {
        opa = op1 >> (i * 8);
        opb = op2 >> (i * 8);
        opr = opa < opb ? opa : opb;
        res |= (uint64_t)opr << (i * 8);
    }
    return res;
}

uint64_t helper_minsb8 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    int8_t opa, opb;
    uint8_t opr;
    int i;

    for (i = 0; i < 8; ++i) {
        opa = op1 >> (i * 8);
        opb = op2 >> (i * 8);
        opr = opa < opb ? opa : opb;
        res |= (uint64_t)opr << (i * 8);
    }
    return res;
}

uint64_t helper_minuw4 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    uint16_t opa, opb, opr;
    int i;

    for (i = 0; i < 4; ++i) {
        opa = op1 >> (i * 16);
        opb = op2 >> (i * 16);
        opr = opa < opb ? opa : opb;
        res |= (uint64_t)opr << (i * 16);
    }
    return res;
}

uint64_t helper_minsw4 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    int16_t opa, opb;
    uint16_t opr;
    int i;

    for (i = 0; i < 4; ++i) {
        opa = op1 >> (i * 16);
        opb = op2 >> (i * 16);
        opr = opa < opb ? opa : opb;
        res |= (uint64_t)opr << (i * 16);
    }
    return res;
}

uint64_t helper_maxub8 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    uint8_t opa, opb, opr;
    int i;

    for (i = 0; i < 8; ++i) {
        opa = op1 >> (i * 8);
        opb = op2 >> (i * 8);
        opr = opa > opb ? opa : opb;
        res |= (uint64_t)opr << (i * 8);
    }
    return res;
}

uint64_t helper_maxsb8 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    int8_t opa, opb;
    uint8_t opr;
    int i;

    for (i = 0; i < 8; ++i) {
        opa = op1 >> (i * 8);
        opb = op2 >> (i * 8);
        opr = opa > opb ? opa : opb;
        res |= (uint64_t)opr << (i * 8);
    }
    return res;
}

uint64_t helper_maxuw4 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    uint16_t opa, opb, opr;
    int i;

    for (i = 0; i < 4; ++i) {
        opa = op1 >> (i * 16);
        opb = op2 >> (i * 16);
        opr = opa > opb ? opa : opb;
        res |= (uint64_t)opr << (i * 16);
    }
    return res;
}

uint64_t helper_maxsw4 (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    int16_t opa, opb;
    uint16_t opr;
    int i;

    for (i = 0; i < 4; ++i) {
        opa = op1 >> (i * 16);
        opb = op2 >> (i * 16);
        opr = opa > opb ? opa : opb;
        res |= (uint64_t)opr << (i * 16);
    }
    return res;
}

uint64_t helper_perr (uint64_t op1, uint64_t op2)
{
    uint64_t res = 0;
    uint8_t opa, opb, opr;
    int i;

    for (i = 0; i < 8; ++i) {
        opa = op1 >> (i * 8);
        opb = op2 >> (i * 8);
        if (opa >= opb)
            opr = opa - opb;
        else
            opr = opb - opa;
        res += opr;
    }
    return res;
}

uint64_t helper_pklb (uint64_t op1)
{
    return (op1 & 0xff) | ((op1 >> 24) & 0xff00);
}

uint64_t helper_pkwb (uint64_t op1)
{
    return ((op1 & 0xff)
            | ((op1 >> 8) & 0xff00)
            | ((op1 >> 16) & 0xff0000)
            | ((op1 >> 24) & 0xff000000));
}

uint64_t helper_unpkbl (uint64_t op1)
{
    return (op1 & 0xff) | ((op1 & 0xff00) << 24);
}

uint64_t helper_unpkbw (uint64_t op1)
{
    return ((op1 & 0xff)
            | ((op1 & 0xff00) << 8)
            | ((op1 & 0xff0000) << 16)
            | ((op1 & 0xff000000) << 24));
}

/* Floating point helpers */

/* F floating (VAX) */
static inline uint64_t float32_to_f(float32 fa)
{
    uint64_t r, exp, mant, sig;
    CPU_FloatU a;

    a.f = fa;
    sig = ((uint64_t)a.l & 0x80000000) << 32;
    exp = (a.l >> 23) & 0xff;
    mant = ((uint64_t)a.l & 0x007fffff) << 29;

    if (exp == 255) {
        /* NaN or infinity */
        r = 1; /* VAX dirty zero */
    } else if (exp == 0) {
        if (mant == 0) {
            /* Zero */
            r = 0;
        } else {
            /* Denormalized */
            r = sig | ((exp + 1) << 52) | mant;
        }
    } else {
        if (exp >= 253) {
            /* Overflow */
            r = 1; /* VAX dirty zero */
        } else {
            r = sig | ((exp + 2) << 52);
        }
    }

    return r;
}

static inline float32 f_to_float32(uint64_t a)
{
    uint32_t exp, mant_sig;
    CPU_FloatU r;

    exp = ((a >> 55) & 0x80) | ((a >> 52) & 0x7f);
    mant_sig = ((a >> 32) & 0x80000000) | ((a >> 29) & 0x007fffff);

    if (unlikely(!exp && mant_sig)) {
        /* Reserved operands / Dirty zero */
        helper_excp(EXCP_OPCDEC, 0);
    }

    if (exp < 3) {
        /* Underflow */
        r.l = 0;
    } else {
        r.l = ((exp - 2) << 23) | mant_sig;
    }

    return r.f;
}

uint32_t helper_f_to_memory (uint64_t a)
{
    uint32_t r;
    r =  (a & 0x00001fffe0000000ull) >> 13;
    r |= (a & 0x07ffe00000000000ull) >> 45;
    r |= (a & 0xc000000000000000ull) >> 48;
    return r;
}

uint64_t helper_memory_to_f (uint32_t a)
{
    uint64_t r;
    r =  ((uint64_t)(a & 0x0000c000)) << 48;
    r |= ((uint64_t)(a & 0x003fffff)) << 45;
    r |= ((uint64_t)(a & 0xffff0000)) << 13;
    if (!(a & 0x00004000))
        r |= 0x7ll << 59;
    return r;
}

uint64_t helper_addf (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = f_to_float32(a);
    fb = f_to_float32(b);
    fr = float32_add(fa, fb, &FP_STATUS);
    return float32_to_f(fr);
}

uint64_t helper_subf (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = f_to_float32(a);
    fb = f_to_float32(b);
    fr = float32_sub(fa, fb, &FP_STATUS);
    return float32_to_f(fr);
}

uint64_t helper_mulf (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = f_to_float32(a);
    fb = f_to_float32(b);
    fr = float32_mul(fa, fb, &FP_STATUS);
    return float32_to_f(fr);
}

uint64_t helper_divf (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = f_to_float32(a);
    fb = f_to_float32(b);
    fr = float32_div(fa, fb, &FP_STATUS);
    return float32_to_f(fr);
}

uint64_t helper_sqrtf (uint64_t t)
{
    float32 ft, fr;

    ft = f_to_float32(t);
    fr = float32_sqrt(ft, &FP_STATUS);
    return float32_to_f(fr);
}


/* G floating (VAX) */
static inline uint64_t float64_to_g(float64 fa)
{
    uint64_t r, exp, mant, sig;
    CPU_DoubleU a;

    a.d = fa;
    sig = a.ll & 0x8000000000000000ull;
    exp = (a.ll >> 52) & 0x7ff;
    mant = a.ll & 0x000fffffffffffffull;

    if (exp == 2047) {
        /* NaN or infinity */
        r = 1; /* VAX dirty zero */
    } else if (exp == 0) {
        if (mant == 0) {
            /* Zero */
            r = 0;
        } else {
            /* Denormalized */
            r = sig | ((exp + 1) << 52) | mant;
        }
    } else {
        if (exp >= 2045) {
            /* Overflow */
            r = 1; /* VAX dirty zero */
        } else {
            r = sig | ((exp + 2) << 52);
        }
    }

    return r;
}

static inline float64 g_to_float64(uint64_t a)
{
    uint64_t exp, mant_sig;
    CPU_DoubleU r;

    exp = (a >> 52) & 0x7ff;
    mant_sig = a & 0x800fffffffffffffull;

    if (!exp && mant_sig) {
        /* Reserved operands / Dirty zero */
        helper_excp(EXCP_OPCDEC, 0);
    }

    if (exp < 3) {
        /* Underflow */
        r.ll = 0;
    } else {
        r.ll = ((exp - 2) << 52) | mant_sig;
    }

    return r.d;
}

uint64_t helper_g_to_memory (uint64_t a)
{
    uint64_t r;
    r =  (a & 0x000000000000ffffull) << 48;
    r |= (a & 0x00000000ffff0000ull) << 16;
    r |= (a & 0x0000ffff00000000ull) >> 16;
    r |= (a & 0xffff000000000000ull) >> 48;
    return r;
}

uint64_t helper_memory_to_g (uint64_t a)
{
    uint64_t r;
    r =  (a & 0x000000000000ffffull) << 48;
    r |= (a & 0x00000000ffff0000ull) << 16;
    r |= (a & 0x0000ffff00000000ull) >> 16;
    r |= (a & 0xffff000000000000ull) >> 48;
    return r;
}

uint64_t helper_addg (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = g_to_float64(a);
    fb = g_to_float64(b);
    fr = float64_add(fa, fb, &FP_STATUS);
    return float64_to_g(fr);
}

uint64_t helper_subg (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = g_to_float64(a);
    fb = g_to_float64(b);
    fr = float64_sub(fa, fb, &FP_STATUS);
    return float64_to_g(fr);
}

uint64_t helper_mulg (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = g_to_float64(a);
    fb = g_to_float64(b);
    fr = float64_mul(fa, fb, &FP_STATUS);
    return float64_to_g(fr);
}

uint64_t helper_divg (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = g_to_float64(a);
    fb = g_to_float64(b);
    fr = float64_div(fa, fb, &FP_STATUS);
    return float64_to_g(fr);
}

uint64_t helper_sqrtg (uint64_t a)
{
    float64 fa, fr;

    fa = g_to_float64(a);
    fr = float64_sqrt(fa, &FP_STATUS);
    return float64_to_g(fr);
}


/* S floating (single) */

/* Taken from linux/arch/alpha/kernel/traps.c, s_mem_to_reg.  */
static inline uint64_t float32_to_s_int(uint32_t fi)
{
    uint32_t frac = fi & 0x7fffff;
    uint32_t sign = fi >> 31;
    uint32_t exp_msb = (fi >> 30) & 1;
    uint32_t exp_low = (fi >> 23) & 0x7f;
    uint32_t exp;

    exp = (exp_msb << 10) | exp_low;
    if (exp_msb) {
        if (exp_low == 0x7f)
            exp = 0x7ff;
    } else {
        if (exp_low != 0x00)
            exp |= 0x380;
    }

    return (((uint64_t)sign << 63)
            | ((uint64_t)exp << 52)
            | ((uint64_t)frac << 29));
}

static inline uint64_t float32_to_s(float32 fa)
{
    CPU_FloatU a;
    a.f = fa;
    return float32_to_s_int(a.l);
}

static inline uint32_t s_to_float32_int(uint64_t a)
{
    return ((a >> 32) & 0xc0000000) | ((a >> 29) & 0x3fffffff);
}

static inline float32 s_to_float32(uint64_t a)
{
    CPU_FloatU r;
    r.l = s_to_float32_int(a);
    return r.f;
}

uint32_t helper_s_to_memory (uint64_t a)
{
    return s_to_float32_int(a);
}

uint64_t helper_memory_to_s (uint32_t a)
{
    return float32_to_s_int(a);
}

uint64_t helper_adds (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = s_to_float32(a);
    fb = s_to_float32(b);
    fr = float32_add(fa, fb, &FP_STATUS);
    return float32_to_s(fr);
}

uint64_t helper_subs (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = s_to_float32(a);
    fb = s_to_float32(b);
    fr = float32_sub(fa, fb, &FP_STATUS);
    return float32_to_s(fr);
}

uint64_t helper_muls (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = s_to_float32(a);
    fb = s_to_float32(b);
    fr = float32_mul(fa, fb, &FP_STATUS);
    return float32_to_s(fr);
}

uint64_t helper_divs (uint64_t a, uint64_t b)
{
    float32 fa, fb, fr;

    fa = s_to_float32(a);
    fb = s_to_float32(b);
    fr = float32_div(fa, fb, &FP_STATUS);
    return float32_to_s(fr);
}

uint64_t helper_sqrts (uint64_t a)
{
    float32 fa, fr;

    fa = s_to_float32(a);
    fr = float32_sqrt(fa, &FP_STATUS);
    return float32_to_s(fr);
}


/* T floating (double) */
static inline float64 t_to_float64(uint64_t a)
{
    /* Memory format is the same as float64 */
    CPU_DoubleU r;
    r.ll = a;
    return r.d;
}

static inline uint64_t float64_to_t(float64 fa)
{
    /* Memory format is the same as float64 */
    CPU_DoubleU r;
    r.d = fa;
    return r.ll;
}

uint64_t helper_addt (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = t_to_float64(a);
    fb = t_to_float64(b);
    fr = float64_add(fa, fb, &FP_STATUS);
    return float64_to_t(fr);
}

uint64_t helper_subt (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = t_to_float64(a);
    fb = t_to_float64(b);
    fr = float64_sub(fa, fb, &FP_STATUS);
    return float64_to_t(fr);
}

uint64_t helper_mult (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = t_to_float64(a);
    fb = t_to_float64(b);
    fr = float64_mul(fa, fb, &FP_STATUS);
    return float64_to_t(fr);
}

uint64_t helper_divt (uint64_t a, uint64_t b)
{
    float64 fa, fb, fr;

    fa = t_to_float64(a);
    fb = t_to_float64(b);
    fr = float64_div(fa, fb, &FP_STATUS);
    return float64_to_t(fr);
}

uint64_t helper_sqrtt (uint64_t a)
{
    float64 fa, fr;

    fa = t_to_float64(a);
    fr = float64_sqrt(fa, &FP_STATUS);
    return float64_to_t(fr);
}


/* Sign copy */
uint64_t helper_cpys(uint64_t a, uint64_t b)
{
    return (a & 0x8000000000000000ULL) | (b & ~0x8000000000000000ULL);
}

uint64_t helper_cpysn(uint64_t a, uint64_t b)
{
    return ((~a) & 0x8000000000000000ULL) | (b & ~0x8000000000000000ULL);
}

uint64_t helper_cpyse(uint64_t a, uint64_t b)
{
    return (a & 0xFFF0000000000000ULL) | (b & ~0xFFF0000000000000ULL);
}


/* Comparisons */
uint64_t helper_cmptun (uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = t_to_float64(a);
    fb = t_to_float64(b);

    if (float64_is_nan(fa) || float64_is_nan(fb))
        return 0x4000000000000000ULL;
    else
        return 0;
}

uint64_t helper_cmpteq(uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = t_to_float64(a);
    fb = t_to_float64(b);

    if (float64_eq(fa, fb, &FP_STATUS))
        return 0x4000000000000000ULL;
    else
        return 0;
}

uint64_t helper_cmptle(uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = t_to_float64(a);
    fb = t_to_float64(b);

    if (float64_le(fa, fb, &FP_STATUS))
        return 0x4000000000000000ULL;
    else
        return 0;
}

uint64_t helper_cmptlt(uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = t_to_float64(a);
    fb = t_to_float64(b);

    if (float64_lt(fa, fb, &FP_STATUS))
        return 0x4000000000000000ULL;
    else
        return 0;
}

uint64_t helper_cmpgeq(uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = g_to_float64(a);
    fb = g_to_float64(b);

    if (float64_eq(fa, fb, &FP_STATUS))
        return 0x4000000000000000ULL;
    else
        return 0;
}

uint64_t helper_cmpgle(uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = g_to_float64(a);
    fb = g_to_float64(b);

    if (float64_le(fa, fb, &FP_STATUS))
        return 0x4000000000000000ULL;
    else
        return 0;
}

uint64_t helper_cmpglt(uint64_t a, uint64_t b)
{
    float64 fa, fb;

    fa = g_to_float64(a);
    fb = g_to_float64(b);

    if (float64_lt(fa, fb, &FP_STATUS))
        return 0x4000000000000000ULL;
    else
        return 0;
}

/* Floating point format conversion */
uint64_t helper_cvtts (uint64_t a)
{
    float64 fa;
    float32 fr;

    fa = t_to_float64(a);
    fr = float64_to_float32(fa, &FP_STATUS);
    return float32_to_s(fr);
}

uint64_t helper_cvtst (uint64_t a)
{
    float32 fa;
    float64 fr;

    fa = s_to_float32(a);
    fr = float32_to_float64(fa, &FP_STATUS);
    return float64_to_t(fr);
}

uint64_t helper_cvtqs (uint64_t a)
{
    float32 fr = int64_to_float32(a, &FP_STATUS);
    return float32_to_s(fr);
}

uint64_t helper_cvttq (uint64_t a)
{
    float64 fa = t_to_float64(a);
    return float64_to_int64_round_to_zero(fa, &FP_STATUS);
}

uint64_t helper_cvtqt (uint64_t a)
{
    float64 fr = int64_to_float64(a, &FP_STATUS);
    return float64_to_t(fr);
}

uint64_t helper_cvtqf (uint64_t a)
{
    float32 fr = int64_to_float32(a, &FP_STATUS);
    return float32_to_f(fr);
}

uint64_t helper_cvtgf (uint64_t a)
{
    float64 fa;
    float32 fr;

    fa = g_to_float64(a);
    fr = float64_to_float32(fa, &FP_STATUS);
    return float32_to_f(fr);
}

uint64_t helper_cvtgq (uint64_t a)
{
    float64 fa = g_to_float64(a);
    return float64_to_int64_round_to_zero(fa, &FP_STATUS);
}

uint64_t helper_cvtqg (uint64_t a)
{
    float64 fr;
    fr = int64_to_float64(a, &FP_STATUS);
    return float64_to_g(fr);
}

uint64_t helper_cvtlq (uint64_t a)
{
    int32_t lo = a >> 29;
    int32_t hi = a >> 32;
    return (lo & 0x3FFFFFFF) | (hi & 0xc0000000);
}

static inline uint64_t __helper_cvtql(uint64_t a, int s, int v)
{
    uint64_t r;

    r = ((uint64_t)(a & 0xC0000000)) << 32;
    r |= ((uint64_t)(a & 0x7FFFFFFF)) << 29;

    if (v && (int64_t)((int32_t)r) != (int64_t)r) {
        helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW);
    }
    if (s) {
        /* TODO */
    }
    return r;
}

uint64_t helper_cvtql (uint64_t a)
{
    return __helper_cvtql(a, 0, 0);
}

uint64_t helper_cvtqlv (uint64_t a)
{
    return __helper_cvtql(a, 0, 1);
}

uint64_t helper_cvtqlsv (uint64_t a)
{
    return __helper_cvtql(a, 1, 1);
}

/* PALcode support special instructions */
#if !defined (CONFIG_USER_ONLY)
void helper_hw_rei (void)
{
    env->pc = env->ipr[IPR_EXC_ADDR] & ~3;
    env->ipr[IPR_EXC_ADDR] = env->ipr[IPR_EXC_ADDR] & 1;
    /* XXX: re-enable interrupts and memory mapping */
}

void helper_hw_ret (uint64_t a)
{
    env->pc = a & ~3;
    env->ipr[IPR_EXC_ADDR] = a & 1;
    /* XXX: re-enable interrupts and memory mapping */
}

uint64_t helper_mfpr (int iprn, uint64_t val)
{
    uint64_t tmp;

    if (cpu_alpha_mfpr(env, iprn, &tmp) == 0)
        val = tmp;

    return val;
}

void helper_mtpr (int iprn, uint64_t val)
{
    cpu_alpha_mtpr(env, iprn, val, NULL);
}

void helper_set_alt_mode (void)
{
    env->saved_mode = env->ps & 0xC;
    env->ps = (env->ps & ~0xC) | (env->ipr[IPR_ALT_MODE] & 0xC);
}

void helper_restore_mode (void)
{
    env->ps = (env->ps & ~0xC) | env->saved_mode;
}

#endif

/*****************************************************************************/
/* Softmmu support */
#if !defined (CONFIG_USER_ONLY)

/* XXX: the two following helpers are pure hacks.
 *      Hopefully, we emulate the PALcode, then we should never see
 *      HW_LD / HW_ST instructions.
 */
uint64_t helper_ld_virt_to_phys (uint64_t virtaddr)
{
    uint64_t tlb_addr, physaddr;
    int index, mmu_idx;
    void *retaddr;

    mmu_idx = cpu_mmu_index(env);
    index = (virtaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 redo:
    tlb_addr = env->tlb_table[mmu_idx][index].addr_read;
    if ((virtaddr & TARGET_PAGE_MASK) ==
        (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
        physaddr = virtaddr + env->tlb_table[mmu_idx][index].addend;
    } else {
        /* the page is not in the TLB : fill it */
        retaddr = GETPC();
        tlb_fill(virtaddr, 0, mmu_idx, retaddr);
        goto redo;
    }
    return physaddr;
}

uint64_t helper_st_virt_to_phys (uint64_t virtaddr)
{
    uint64_t tlb_addr, physaddr;
    int index, mmu_idx;
    void *retaddr;

    mmu_idx = cpu_mmu_index(env);
    index = (virtaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 redo:
    tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
    if ((virtaddr & TARGET_PAGE_MASK) ==
        (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
        physaddr = virtaddr + env->tlb_table[mmu_idx][index].addend;
    } else {
        /* the page is not in the TLB : fill it */
        retaddr = GETPC();
        tlb_fill(virtaddr, 1, mmu_idx, retaddr);
        goto redo;
    }
    return physaddr;
}

void helper_ldl_raw(uint64_t t0, uint64_t t1)
{
    ldl_raw(t1, t0);
}

void helper_ldq_raw(uint64_t t0, uint64_t t1)
{
    ldq_raw(t1, t0);
}

void helper_ldl_l_raw(uint64_t t0, uint64_t t1)
{
    env->lock = t1;
    ldl_raw(t1, t0);
}

void helper_ldq_l_raw(uint64_t t0, uint64_t t1)
{
    env->lock = t1;
    ldl_raw(t1, t0);
}

void helper_ldl_kernel(uint64_t t0, uint64_t t1)
{
    ldl_kernel(t1, t0);
}

void helper_ldq_kernel(uint64_t t0, uint64_t t1)
{
    ldq_kernel(t1, t0);
}

void helper_ldl_data(uint64_t t0, uint64_t t1)
{
    ldl_data(t1, t0);
}

void helper_ldq_data(uint64_t t0, uint64_t t1)
{
    ldq_data(t1, t0);
}

void helper_stl_raw(uint64_t t0, uint64_t t1)
{
    stl_raw(t1, t0);
}

void helper_stq_raw(uint64_t t0, uint64_t t1)
{
    stq_raw(t1, t0);
}

uint64_t helper_stl_c_raw(uint64_t t0, uint64_t t1)
{
    uint64_t ret;

    if (t1 == env->lock) {
        stl_raw(t1, t0);
        ret = 0;
    } else
        ret = 1;

    env->lock = 1;

    return ret;
}

uint64_t helper_stq_c_raw(uint64_t t0, uint64_t t1)
{
    uint64_t ret;

    if (t1 == env->lock) {
        stq_raw(t1, t0);
        ret = 0;
    } else
        ret = 1;

    env->lock = 1;

    return ret;
}

#define MMUSUFFIX _mmu

#define SHIFT 0
#include "softmmu_template.h"

#define SHIFT 1
#include "softmmu_template.h"

#define SHIFT 2
#include "softmmu_template.h"

#define SHIFT 3
#include "softmmu_template.h"

/* try to fill the TLB and return an exception if error. If retaddr is
   NULL, it means that the function was called in C code (i.e. not
   from generated code or from helper.c) */
/* XXX: fix it to restore all registers */
void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
{
    TranslationBlock *tb;
    CPUState *saved_env;
    unsigned long pc;
    int ret;

    /* XXX: hack to restore env in all cases, even if not called from
       generated code */
    saved_env = env;
    env = cpu_single_env;
    ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
    if (!likely(ret == 0)) {
        if (likely(retaddr)) {
            /* now we have a real cpu fault */
            pc = (unsigned long)retaddr;
            tb = tb_find_pc(pc);
            if (likely(tb)) {
                /* the PC is inside the translated code. It means that we have
                   a virtual CPU fault */
                cpu_restore_state(tb, env, pc, NULL);
            }
        }
        /* Exception index and error code are already set */
        cpu_loop_exit();
    }
    env = saved_env;
}

#endif
OpenPOWER on IntegriCloud