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
|
########################################################################
# Implement fast SHA-256 with AVX2 instructions. (x86_64)
#
# Copyright (C) 2013 Intel Corporation.
#
# Authors:
# James Guilford <james.guilford@intel.com>
# Kirk Yap <kirk.s.yap@intel.com>
# Tim Chen <tim.c.chen@linux.intel.com>
#
# This software is available to you under a choice of one of two
# licenses. You may choose to be licensed under the terms of the GNU
# General Public License (GPL) Version 2, available from the file
# COPYING in the main directory of this source tree, or the
# OpenIB.org BSD license below:
#
# Redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following
# conditions are met:
#
# - Redistributions of source code must retain the above
# copyright notice, this list of conditions and the following
# disclaimer.
#
# - Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
########################################################################
#
# This code is described in an Intel White-Paper:
# "Fast SHA-256 Implementations on Intel Architecture Processors"
#
# To find it, surf to http://www.intel.com/p/en_US/embedded
# and search for that title.
#
########################################################################
# This code schedules 2 blocks at a time, with 4 lanes per block
########################################################################
#ifdef CONFIG_AS_AVX2
#include <linux/linkage.h>
## assume buffers not aligned
#define VMOVDQ vmovdqu
################################ Define Macros
# addm [mem], reg
# Add reg to mem using reg-mem add and store
.macro addm p1 p2
add \p1, \p2
mov \p2, \p1
.endm
################################
X0 = %ymm4
X1 = %ymm5
X2 = %ymm6
X3 = %ymm7
# XMM versions of above
XWORD0 = %xmm4
XWORD1 = %xmm5
XWORD2 = %xmm6
XWORD3 = %xmm7
XTMP0 = %ymm0
XTMP1 = %ymm1
XTMP2 = %ymm2
XTMP3 = %ymm3
XTMP4 = %ymm8
XFER = %ymm9
XTMP5 = %ymm11
SHUF_00BA = %ymm10 # shuffle xBxA -> 00BA
SHUF_DC00 = %ymm12 # shuffle xDxC -> DC00
BYTE_FLIP_MASK = %ymm13
X_BYTE_FLIP_MASK = %xmm13 # XMM version of BYTE_FLIP_MASK
NUM_BLKS = %rdx # 3rd arg
INP = %rsi # 2nd arg
CTX = %rdi # 1st arg
c = %ecx
d = %r8d
e = %edx # clobbers NUM_BLKS
y3 = %esi # clobbers INP
TBL = %rbp
SRND = CTX # SRND is same register as CTX
a = %eax
b = %ebx
f = %r9d
g = %r10d
h = %r11d
old_h = %r11d
T1 = %r12d
y0 = %r13d
y1 = %r14d
y2 = %r15d
_XFER_SIZE = 2*64*4 # 2 blocks, 64 rounds, 4 bytes/round
_XMM_SAVE_SIZE = 0
_INP_END_SIZE = 8
_INP_SIZE = 8
_CTX_SIZE = 8
_RSP_SIZE = 8
_XFER = 0
_XMM_SAVE = _XFER + _XFER_SIZE
_INP_END = _XMM_SAVE + _XMM_SAVE_SIZE
_INP = _INP_END + _INP_END_SIZE
_CTX = _INP + _INP_SIZE
_RSP = _CTX + _CTX_SIZE
STACK_SIZE = _RSP + _RSP_SIZE
# rotate_Xs
# Rotate values of symbols X0...X3
.macro rotate_Xs
X_ = X0
X0 = X1
X1 = X2
X2 = X3
X3 = X_
.endm
# ROTATE_ARGS
# Rotate values of symbols a...h
.macro ROTATE_ARGS
old_h = h
TMP_ = h
h = g
g = f
f = e
e = d
d = c
c = b
b = a
a = TMP_
.endm
.macro FOUR_ROUNDS_AND_SCHED disp
################################### RND N + 0 ############################
mov a, y3 # y3 = a # MAJA
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
addl \disp(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
vpalignr $4, X2, X3, XTMP0 # XTMP0 = W[-7]
mov f, y2 # y2 = f # CH
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
xor g, y2 # y2 = f^g # CH
vpaddd X0, XTMP0, XTMP0 # XTMP0 = W[-7] + W[-16]# y1 = (e >> 6)# S1
rorx $6, e, y1 # y1 = (e >> 6) # S1
and e, y2 # y2 = (f^g)&e # CH
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $22, a, y1 # y1 = a >> 22 # S0A
add h, d # d = k + w + h + d # --
and b, y3 # y3 = (a|c)&b # MAJA
vpalignr $4, X0, X1, XTMP1 # XTMP1 = W[-15]
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
rorx $2, a, T1 # T1 = (a >> 2) # S0
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
vpsrld $7, XTMP1, XTMP2
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
vpslld $(32-7), XTMP1, XTMP3
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
vpor XTMP2, XTMP3, XTMP3 # XTMP3 = W[-15] ror 7
vpsrld $18, XTMP1, XTMP2
add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
add y3, h # h = t1 + S0 + MAJ # --
ROTATE_ARGS
################################### RND N + 1 ############################
mov a, y3 # y3 = a # MAJA
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
offset = \disp + 1*4
addl offset(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
vpsrld $3, XTMP1, XTMP4 # XTMP4 = W[-15] >> 3
mov f, y2 # y2 = f # CH
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
xor g, y2 # y2 = f^g # CH
rorx $6, e, y1 # y1 = (e >> 6) # S1
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $22, a, y1 # y1 = a >> 22 # S0A
and e, y2 # y2 = (f^g)&e # CH
add h, d # d = k + w + h + d # --
vpslld $(32-18), XTMP1, XTMP1
and b, y3 # y3 = (a|c)&b # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
vpxor XTMP1, XTMP3, XTMP3
rorx $2, a, T1 # T1 = (a >> 2) # S0
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
vpxor XTMP2, XTMP3, XTMP3 # XTMP3 = W[-15] ror 7 ^ W[-15] ror 18
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
vpxor XTMP4, XTMP3, XTMP1 # XTMP1 = s0
vpshufd $0b11111010, X3, XTMP2 # XTMP2 = W[-2] {BBAA}
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
vpaddd XTMP1, XTMP0, XTMP0 # XTMP0 = W[-16] + W[-7] + s0
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
add y3, h # h = t1 + S0 + MAJ # --
vpsrld $10, XTMP2, XTMP4 # XTMP4 = W[-2] >> 10 {BBAA}
ROTATE_ARGS
################################### RND N + 2 ############################
mov a, y3 # y3 = a # MAJA
rorx $25, e, y0 # y0 = e >> 25 # S1A
offset = \disp + 2*4
addl offset(%rsp, SRND), h # h = k + w + h # --
vpsrlq $19, XTMP2, XTMP3 # XTMP3 = W[-2] ror 19 {xBxA}
rorx $11, e, y1 # y1 = e >> 11 # S1B
or c, y3 # y3 = a|c # MAJA
mov f, y2 # y2 = f # CH
xor g, y2 # y2 = f^g # CH
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
vpsrlq $17, XTMP2, XTMP2 # XTMP2 = W[-2] ror 17 {xBxA}
and e, y2 # y2 = (f^g)&e # CH
rorx $6, e, y1 # y1 = (e >> 6) # S1
vpxor XTMP3, XTMP2, XTMP2
add h, d # d = k + w + h + d # --
and b, y3 # y3 = (a|c)&b # MAJA
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $22, a, y1 # y1 = a >> 22 # S0A
vpxor XTMP2, XTMP4, XTMP4 # XTMP4 = s1 {xBxA}
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
vpshufb SHUF_00BA, XTMP4, XTMP4 # XTMP4 = s1 {00BA}
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
rorx $2, a ,T1 # T1 = (a >> 2) # S0
vpaddd XTMP4, XTMP0, XTMP0 # XTMP0 = {..., ..., W[1], W[0]}
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
vpshufd $0b01010000, XTMP0, XTMP2 # XTMP2 = W[-2] {DDCC}
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1,h # h = k + w + h + S0 # --
add y2,d # d = k + w + h + d + S1 + CH = d + t1 # --
add y2,h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
add y3,h # h = t1 + S0 + MAJ # --
ROTATE_ARGS
################################### RND N + 3 ############################
mov a, y3 # y3 = a # MAJA
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
offset = \disp + 3*4
addl offset(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
vpsrld $10, XTMP2, XTMP5 # XTMP5 = W[-2] >> 10 {DDCC}
mov f, y2 # y2 = f # CH
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
xor g, y2 # y2 = f^g # CH
vpsrlq $19, XTMP2, XTMP3 # XTMP3 = W[-2] ror 19 {xDxC}
rorx $6, e, y1 # y1 = (e >> 6) # S1
and e, y2 # y2 = (f^g)&e # CH
add h, d # d = k + w + h + d # --
and b, y3 # y3 = (a|c)&b # MAJA
vpsrlq $17, XTMP2, XTMP2 # XTMP2 = W[-2] ror 17 {xDxC}
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
vpxor XTMP3, XTMP2, XTMP2
rorx $22, a, y1 # y1 = a >> 22 # S0A
add y0, y2 # y2 = S1 + CH # --
vpxor XTMP2, XTMP5, XTMP5 # XTMP5 = s1 {xDxC}
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
rorx $2, a, T1 # T1 = (a >> 2) # S0
vpshufb SHUF_DC00, XTMP5, XTMP5 # XTMP5 = s1 {DC00}
vpaddd XTMP0, XTMP5, X0 # X0 = {W[3], W[2], W[1], W[0]}
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and c, T1 # T1 = a&c # MAJB
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
add y3, h # h = t1 + S0 + MAJ # --
ROTATE_ARGS
rotate_Xs
.endm
.macro DO_4ROUNDS disp
################################### RND N + 0 ###########################
mov f, y2 # y2 = f # CH
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
xor g, y2 # y2 = f^g # CH
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
rorx $6, e, y1 # y1 = (e >> 6) # S1
and e, y2 # y2 = (f^g)&e # CH
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
rorx $22, a, y1 # y1 = a >> 22 # S0A
mov a, y3 # y3 = a # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
rorx $2, a, T1 # T1 = (a >> 2) # S0
addl \disp(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and b, y3 # y3 = (a|c)&b # MAJA
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
add h, d # d = k + w + h + d # --
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
ROTATE_ARGS
################################### RND N + 1 ###########################
add y2, old_h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
mov f, y2 # y2 = f # CH
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
xor g, y2 # y2 = f^g # CH
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
rorx $6, e, y1 # y1 = (e >> 6) # S1
and e, y2 # y2 = (f^g)&e # CH
add y3, old_h # h = t1 + S0 + MAJ # --
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
rorx $22, a, y1 # y1 = a >> 22 # S0A
mov a, y3 # y3 = a # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
rorx $2, a, T1 # T1 = (a >> 2) # S0
offset = 4*1 + \disp
addl offset(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and b, y3 # y3 = (a|c)&b # MAJA
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
add h, d # d = k + w + h + d # --
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
ROTATE_ARGS
################################### RND N + 2 ##############################
add y2, old_h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
mov f, y2 # y2 = f # CH
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
xor g, y2 # y2 = f^g # CH
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
rorx $6, e, y1 # y1 = (e >> 6) # S1
and e, y2 # y2 = (f^g)&e # CH
add y3, old_h # h = t1 + S0 + MAJ # --
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
rorx $22, a, y1 # y1 = a >> 22 # S0A
mov a, y3 # y3 = a # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
rorx $2, a, T1 # T1 = (a >> 2) # S0
offset = 4*2 + \disp
addl offset(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and b, y3 # y3 = (a|c)&b # MAJA
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
add h, d # d = k + w + h + d # --
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
ROTATE_ARGS
################################### RND N + 3 ###########################
add y2, old_h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
mov f, y2 # y2 = f # CH
rorx $25, e, y0 # y0 = e >> 25 # S1A
rorx $11, e, y1 # y1 = e >> 11 # S1B
xor g, y2 # y2 = f^g # CH
xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
rorx $6, e, y1 # y1 = (e >> 6) # S1
and e, y2 # y2 = (f^g)&e # CH
add y3, old_h # h = t1 + S0 + MAJ # --
xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
rorx $13, a, T1 # T1 = a >> 13 # S0B
xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
rorx $22, a, y1 # y1 = a >> 22 # S0A
mov a, y3 # y3 = a # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
rorx $2, a, T1 # T1 = (a >> 2) # S0
offset = 4*3 + \disp
addl offset(%rsp, SRND), h # h = k + w + h # --
or c, y3 # y3 = a|c # MAJA
xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
mov a, T1 # T1 = a # MAJB
and b, y3 # y3 = (a|c)&b # MAJA
and c, T1 # T1 = a&c # MAJB
add y0, y2 # y2 = S1 + CH # --
add h, d # d = k + w + h + d # --
or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
add y1, h # h = k + w + h + S0 # --
add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
add y3, h # h = t1 + S0 + MAJ # --
ROTATE_ARGS
.endm
########################################################################
## void sha256_transform_rorx(void *input_data, UINT32 digest[8], UINT64 num_blks)
## arg 1 : pointer to digest
## arg 2 : pointer to input data
## arg 3 : Num blocks
########################################################################
.text
ENTRY(sha256_transform_rorx)
.align 32
pushq %rbx
pushq %rbp
pushq %r12
pushq %r13
pushq %r14
pushq %r15
mov %rsp, %rax
subq $STACK_SIZE, %rsp
and $-32, %rsp # align rsp to 32 byte boundary
mov %rax, _RSP(%rsp)
shl $6, NUM_BLKS # convert to bytes
jz done_hash
lea -64(INP, NUM_BLKS), NUM_BLKS # pointer to last block
mov NUM_BLKS, _INP_END(%rsp)
cmp NUM_BLKS, INP
je only_one_block
## load initial digest
mov (CTX), a
mov 4*1(CTX), b
mov 4*2(CTX), c
mov 4*3(CTX), d
mov 4*4(CTX), e
mov 4*5(CTX), f
mov 4*6(CTX), g
mov 4*7(CTX), h
vmovdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), BYTE_FLIP_MASK
vmovdqa _SHUF_00BA(%rip), SHUF_00BA
vmovdqa _SHUF_DC00(%rip), SHUF_DC00
mov CTX, _CTX(%rsp)
loop0:
lea K256(%rip), TBL
## Load first 16 dwords from two blocks
VMOVDQ 0*32(INP),XTMP0
VMOVDQ 1*32(INP),XTMP1
VMOVDQ 2*32(INP),XTMP2
VMOVDQ 3*32(INP),XTMP3
## byte swap data
vpshufb BYTE_FLIP_MASK, XTMP0, XTMP0
vpshufb BYTE_FLIP_MASK, XTMP1, XTMP1
vpshufb BYTE_FLIP_MASK, XTMP2, XTMP2
vpshufb BYTE_FLIP_MASK, XTMP3, XTMP3
## transpose data into high/low halves
vperm2i128 $0x20, XTMP2, XTMP0, X0
vperm2i128 $0x31, XTMP2, XTMP0, X1
vperm2i128 $0x20, XTMP3, XTMP1, X2
vperm2i128 $0x31, XTMP3, XTMP1, X3
last_block_enter:
add $64, INP
mov INP, _INP(%rsp)
## schedule 48 input dwords, by doing 3 rounds of 12 each
xor SRND, SRND
.align 16
loop1:
vpaddd 0*32(TBL, SRND), X0, XFER
vmovdqa XFER, 0*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 0*32
vpaddd 1*32(TBL, SRND), X0, XFER
vmovdqa XFER, 1*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 1*32
vpaddd 2*32(TBL, SRND), X0, XFER
vmovdqa XFER, 2*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 2*32
vpaddd 3*32(TBL, SRND), X0, XFER
vmovdqa XFER, 3*32+_XFER(%rsp, SRND)
FOUR_ROUNDS_AND_SCHED _XFER + 3*32
add $4*32, SRND
cmp $3*4*32, SRND
jb loop1
loop2:
## Do last 16 rounds with no scheduling
vpaddd 0*32(TBL, SRND), X0, XFER
vmovdqa XFER, 0*32+_XFER(%rsp, SRND)
DO_4ROUNDS _XFER + 0*32
vpaddd 1*32(TBL, SRND), X1, XFER
vmovdqa XFER, 1*32+_XFER(%rsp, SRND)
DO_4ROUNDS _XFER + 1*32
add $2*32, SRND
vmovdqa X2, X0
vmovdqa X3, X1
cmp $4*4*32, SRND
jb loop2
mov _CTX(%rsp), CTX
mov _INP(%rsp), INP
addm (4*0)(CTX),a
addm (4*1)(CTX),b
addm (4*2)(CTX),c
addm (4*3)(CTX),d
addm (4*4)(CTX),e
addm (4*5)(CTX),f
addm (4*6)(CTX),g
addm (4*7)(CTX),h
cmp _INP_END(%rsp), INP
ja done_hash
#### Do second block using previously scheduled results
xor SRND, SRND
.align 16
loop3:
DO_4ROUNDS _XFER + 0*32 + 16
DO_4ROUNDS _XFER + 1*32 + 16
add $2*32, SRND
cmp $4*4*32, SRND
jb loop3
mov _CTX(%rsp), CTX
mov _INP(%rsp), INP
add $64, INP
addm (4*0)(CTX),a
addm (4*1)(CTX),b
addm (4*2)(CTX),c
addm (4*3)(CTX),d
addm (4*4)(CTX),e
addm (4*5)(CTX),f
addm (4*6)(CTX),g
addm (4*7)(CTX),h
cmp _INP_END(%rsp), INP
jb loop0
ja done_hash
do_last_block:
#### do last block
lea K256(%rip), TBL
VMOVDQ 0*16(INP),XWORD0
VMOVDQ 1*16(INP),XWORD1
VMOVDQ 2*16(INP),XWORD2
VMOVDQ 3*16(INP),XWORD3
vpshufb X_BYTE_FLIP_MASK, XWORD0, XWORD0
vpshufb X_BYTE_FLIP_MASK, XWORD1, XWORD1
vpshufb X_BYTE_FLIP_MASK, XWORD2, XWORD2
vpshufb X_BYTE_FLIP_MASK, XWORD3, XWORD3
jmp last_block_enter
only_one_block:
## load initial digest
mov (4*0)(CTX),a
mov (4*1)(CTX),b
mov (4*2)(CTX),c
mov (4*3)(CTX),d
mov (4*4)(CTX),e
mov (4*5)(CTX),f
mov (4*6)(CTX),g
mov (4*7)(CTX),h
vmovdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), BYTE_FLIP_MASK
vmovdqa _SHUF_00BA(%rip), SHUF_00BA
vmovdqa _SHUF_DC00(%rip), SHUF_DC00
mov CTX, _CTX(%rsp)
jmp do_last_block
done_hash:
mov _RSP(%rsp), %rsp
popq %r15
popq %r14
popq %r13
popq %r12
popq %rbp
popq %rbx
ret
ENDPROC(sha256_transform_rorx)
.data
.align 64
K256:
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
PSHUFFLE_BYTE_FLIP_MASK:
.octa 0x0c0d0e0f08090a0b0405060700010203,0x0c0d0e0f08090a0b0405060700010203
# shuffle xBxA -> 00BA
_SHUF_00BA:
.octa 0xFFFFFFFFFFFFFFFF0b0a090803020100,0xFFFFFFFFFFFFFFFF0b0a090803020100
# shuffle xDxC -> DC00
_SHUF_DC00:
.octa 0x0b0a090803020100FFFFFFFFFFFFFFFF,0x0b0a090803020100FFFFFFFFFFFFFFFF
#endif
|
