aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/crypto/aesni-intel_asm.S
blob: 20bb0e1ac681e3c78fed44fc76ccfaff2a0824f3 (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
/*
 * Implement AES algorithm in Intel AES-NI instructions.
 *
 * The white paper of AES-NI instructions can be downloaded from:
 *   http://softwarecommunity.intel.com/isn/downloads/intelavx/AES-Instructions-Set_WP.pdf
 *
 * Copyright (C) 2008, Intel Corp.
 *    Author: Huang Ying <ying.huang@intel.com>
 *            Vinodh Gopal <vinodh.gopal@intel.com>
 *            Kahraman Akdemir
 *
 * 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.
 */

#include <linux/linkage.h>
#include <asm/inst.h>

.text

#define STATE1	%xmm0
#define STATE2	%xmm4
#define STATE3	%xmm5
#define STATE4	%xmm6
#define STATE	STATE1
#define IN1	%xmm1
#define IN2	%xmm7
#define IN3	%xmm8
#define IN4	%xmm9
#define IN	IN1
#define KEY	%xmm2
#define IV	%xmm3

#define KEYP	%rdi
#define OUTP	%rsi
#define INP	%rdx
#define LEN	%rcx
#define IVP	%r8
#define KLEN	%r9d
#define T1	%r10
#define TKEYP	T1
#define T2	%r11

_key_expansion_128:
_key_expansion_256a:
	pshufd $0b11111111, %xmm1, %xmm1
	shufps $0b00010000, %xmm0, %xmm4
	pxor %xmm4, %xmm0
	shufps $0b10001100, %xmm0, %xmm4
	pxor %xmm4, %xmm0
	pxor %xmm1, %xmm0
	movaps %xmm0, (%rcx)
	add $0x10, %rcx
	ret

_key_expansion_192a:
	pshufd $0b01010101, %xmm1, %xmm1
	shufps $0b00010000, %xmm0, %xmm4
	pxor %xmm4, %xmm0
	shufps $0b10001100, %xmm0, %xmm4
	pxor %xmm4, %xmm0
	pxor %xmm1, %xmm0

	movaps %xmm2, %xmm5
	movaps %xmm2, %xmm6
	pslldq $4, %xmm5
	pshufd $0b11111111, %xmm0, %xmm3
	pxor %xmm3, %xmm2
	pxor %xmm5, %xmm2

	movaps %xmm0, %xmm1
	shufps $0b01000100, %xmm0, %xmm6
	movaps %xmm6, (%rcx)
	shufps $0b01001110, %xmm2, %xmm1
	movaps %xmm1, 16(%rcx)
	add $0x20, %rcx
	ret

_key_expansion_192b:
	pshufd $0b01010101, %xmm1, %xmm1
	shufps $0b00010000, %xmm0, %xmm4
	pxor %xmm4, %xmm0
	shufps $0b10001100, %xmm0, %xmm4
	pxor %xmm4, %xmm0
	pxor %xmm1, %xmm0

	movaps %xmm2, %xmm5
	pslldq $4, %xmm5
	pshufd $0b11111111, %xmm0, %xmm3
	pxor %xmm3, %xmm2
	pxor %xmm5, %xmm2

	movaps %xmm0, (%rcx)
	add $0x10, %rcx
	ret

_key_expansion_256b:
	pshufd $0b10101010, %xmm1, %xmm1
	shufps $0b00010000, %xmm2, %xmm4
	pxor %xmm4, %xmm2
	shufps $0b10001100, %xmm2, %xmm4
	pxor %xmm4, %xmm2
	pxor %xmm1, %xmm2
	movaps %xmm2, (%rcx)
	add $0x10, %rcx
	ret

/*
 * int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key,
 *                   unsigned int key_len)
 */
ENTRY(aesni_set_key)
	movups (%rsi), %xmm0		# user key (first 16 bytes)
	movaps %xmm0, (%rdi)
	lea 0x10(%rdi), %rcx		# key addr
	movl %edx, 480(%rdi)
	pxor %xmm4, %xmm4		# xmm4 is assumed 0 in _key_expansion_x
	cmp $24, %dl
	jb .Lenc_key128
	je .Lenc_key192
	movups 0x10(%rsi), %xmm2	# other user key
	movaps %xmm2, (%rcx)
	add $0x10, %rcx
	AESKEYGENASSIST 0x1 %xmm2 %xmm1		# round 1
	call _key_expansion_256a
	AESKEYGENASSIST 0x1 %xmm0 %xmm1
	call _key_expansion_256b
	AESKEYGENASSIST 0x2 %xmm2 %xmm1		# round 2
	call _key_expansion_256a
	AESKEYGENASSIST 0x2 %xmm0 %xmm1
	call _key_expansion_256b
	AESKEYGENASSIST 0x4 %xmm2 %xmm1		# round 3
	call _key_expansion_256a
	AESKEYGENASSIST 0x4 %xmm0 %xmm1
	call _key_expansion_256b
	AESKEYGENASSIST 0x8 %xmm2 %xmm1		# round 4
	call _key_expansion_256a
	AESKEYGENASSIST 0x8 %xmm0 %xmm1
	call _key_expansion_256b
	AESKEYGENASSIST 0x10 %xmm2 %xmm1	# round 5
	call _key_expansion_256a
	AESKEYGENASSIST 0x10 %xmm0 %xmm1
	call _key_expansion_256b
	AESKEYGENASSIST 0x20 %xmm2 %xmm1	# round 6
	call _key_expansion_256a
	AESKEYGENASSIST 0x20 %xmm0 %xmm1
	call _key_expansion_256b
	AESKEYGENASSIST 0x40 %xmm2 %xmm1	# round 7
	call _key_expansion_256a
	jmp .Ldec_key
.Lenc_key192:
	movq 0x10(%rsi), %xmm2		# other user key
	AESKEYGENASSIST 0x1 %xmm2 %xmm1		# round 1
	call _key_expansion_192a
	AESKEYGENASSIST 0x2 %xmm2 %xmm1		# round 2
	call _key_expansion_192b
	AESKEYGENASSIST 0x4 %xmm2 %xmm1		# round 3
	call _key_expansion_192a
	AESKEYGENASSIST 0x8 %xmm2 %xmm1		# round 4
	call _key_expansion_192b
	AESKEYGENASSIST 0x10 %xmm2 %xmm1	# round 5
	call _key_expansion_192a
	AESKEYGENASSIST 0x20 %xmm2 %xmm1	# round 6
	call _key_expansion_192b
	AESKEYGENASSIST 0x40 %xmm2 %xmm1	# round 7
	call _key_expansion_192a
	AESKEYGENASSIST 0x80 %xmm2 %xmm1	# round 8
	call _key_expansion_192b
	jmp .Ldec_key
.Lenc_key128:
	AESKEYGENASSIST 0x1 %xmm0 %xmm1		# round 1
	call _key_expansion_128
	AESKEYGENASSIST 0x2 %xmm0 %xmm1		# round 2
	call _key_expansion_128
	AESKEYGENASSIST 0x4 %xmm0 %xmm1		# round 3
	call _key_expansion_128
	AESKEYGENASSIST 0x8 %xmm0 %xmm1		# round 4
	call _key_expansion_128
	AESKEYGENASSIST 0x10 %xmm0 %xmm1	# round 5
	call _key_expansion_128
	AESKEYGENASSIST 0x20 %xmm0 %xmm1	# round 6
	call _key_expansion_128
	AESKEYGENASSIST 0x40 %xmm0 %xmm1	# round 7
	call _key_expansion_128
	AESKEYGENASSIST 0x80 %xmm0 %xmm1	# round 8
	call _key_expansion_128
	AESKEYGENASSIST 0x1b %xmm0 %xmm1	# round 9
	call _key_expansion_128
	AESKEYGENASSIST 0x36 %xmm0 %xmm1	# round 10
	call _key_expansion_128
.Ldec_key:
	sub $0x10, %rcx
	movaps (%rdi), %xmm0
	movaps (%rcx), %xmm1
	movaps %xmm0, 240(%rcx)
	movaps %xmm1, 240(%rdi)
	add $0x10, %rdi
	lea 240-16(%rcx), %rsi
.align 4
.Ldec_key_loop:
	movaps (%rdi), %xmm0
	AESIMC %xmm0 %xmm1
	movaps %xmm1, (%rsi)
	add $0x10, %rdi
	sub $0x10, %rsi
	cmp %rcx, %rdi
	jb .Ldec_key_loop
	xor %rax, %rax
	ret

/*
 * void aesni_enc(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
 */
ENTRY(aesni_enc)
	movl 480(KEYP), KLEN		# key length
	movups (INP), STATE		# input
	call _aesni_enc1
	movups STATE, (OUTP)		# output
	ret

/*
 * _aesni_enc1:		internal ABI
 * input:
 *	KEYP:		key struct pointer
 *	KLEN:		round count
 *	STATE:		initial state (input)
 * output:
 *	STATE:		finial state (output)
 * changed:
 *	KEY
 *	TKEYP (T1)
 */
_aesni_enc1:
	movaps (KEYP), KEY		# key
	mov KEYP, TKEYP
	pxor KEY, STATE		# round 0
	add $0x30, TKEYP
	cmp $24, KLEN
	jb .Lenc128
	lea 0x20(TKEYP), TKEYP
	je .Lenc192
	add $0x20, TKEYP
	movaps -0x60(TKEYP), KEY
	AESENC KEY STATE
	movaps -0x50(TKEYP), KEY
	AESENC KEY STATE
.align 4
.Lenc192:
	movaps -0x40(TKEYP), KEY
	AESENC KEY STATE
	movaps -0x30(TKEYP), KEY
	AESENC KEY STATE
.align 4
.Lenc128:
	movaps -0x20(TKEYP), KEY
	AESENC KEY STATE
	movaps -0x10(TKEYP), KEY
	AESENC KEY STATE
	movaps (TKEYP), KEY
	AESENC KEY STATE
	movaps 0x10(TKEYP), KEY
	AESENC KEY STATE
	movaps 0x20(TKEYP), KEY
	AESENC KEY STATE
	movaps 0x30(TKEYP), KEY
	AESENC KEY STATE
	movaps 0x40(TKEYP), KEY
	AESENC KEY STATE
	movaps 0x50(TKEYP), KEY
	AESENC KEY STATE
	movaps 0x60(TKEYP), KEY
	AESENC KEY STATE
	movaps 0x70(TKEYP), KEY
	AESENCLAST KEY STATE
	ret

/*
 * _aesni_enc4:	internal ABI
 * input:
 *	KEYP:		key struct pointer
 *	KLEN:		round count
 *	STATE1:		initial state (input)
 *	STATE2
 *	STATE3
 *	STATE4
 * output:
 *	STATE1:		finial state (output)
 *	STATE2
 *	STATE3
 *	STATE4
 * changed:
 *	KEY
 *	TKEYP (T1)
 */
_aesni_enc4:
	movaps (KEYP), KEY		# key
	mov KEYP, TKEYP
	pxor KEY, STATE1		# round 0
	pxor KEY, STATE2
	pxor KEY, STATE3
	pxor KEY, STATE4
	add $0x30, TKEYP
	cmp $24, KLEN
	jb .L4enc128
	lea 0x20(TKEYP), TKEYP
	je .L4enc192
	add $0x20, TKEYP
	movaps -0x60(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps -0x50(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
#.align 4
.L4enc192:
	movaps -0x40(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps -0x30(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
#.align 4
.L4enc128:
	movaps -0x20(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps -0x10(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps (TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x10(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x20(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x30(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x40(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x50(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x60(TKEYP), KEY
	AESENC KEY STATE1
	AESENC KEY STATE2
	AESENC KEY STATE3
	AESENC KEY STATE4
	movaps 0x70(TKEYP), KEY
	AESENCLAST KEY STATE1		# last round
	AESENCLAST KEY STATE2
	AESENCLAST KEY STATE3
	AESENCLAST KEY STATE4
	ret

/*
 * void aesni_dec (struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
 */
ENTRY(aesni_dec)
	mov 480(KEYP), KLEN		# key length
	add $240, KEYP
	movups (INP), STATE		# input
	call _aesni_dec1
	movups STATE, (OUTP)		#output
	ret

/*
 * _aesni_dec1:		internal ABI
 * input:
 *	KEYP:		key struct pointer
 *	KLEN:		key length
 *	STATE:		initial state (input)
 * output:
 *	STATE:		finial state (output)
 * changed:
 *	KEY
 *	TKEYP (T1)
 */
_aesni_dec1:
	movaps (KEYP), KEY		# key
	mov KEYP, TKEYP
	pxor KEY, STATE		# round 0
	add $0x30, TKEYP
	cmp $24, KLEN
	jb .Ldec128
	lea 0x20(TKEYP), TKEYP
	je .Ldec192
	add $0x20, TKEYP
	movaps -0x60(TKEYP), KEY
	AESDEC KEY STATE
	movaps -0x50(TKEYP), KEY
	AESDEC KEY STATE
.align 4
.Ldec192:
	movaps -0x40(TKEYP), KEY
	AESDEC KEY STATE
	movaps -0x30(TKEYP), KEY
	AESDEC KEY STATE
.align 4
.Ldec128:
	movaps -0x20(TKEYP), KEY
	AESDEC KEY STATE
	movaps -0x10(TKEYP), KEY
	AESDEC KEY STATE
	movaps (TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x10(TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x20(TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x30(TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x40(TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x50(TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x60(TKEYP), KEY
	AESDEC KEY STATE
	movaps 0x70(TKEYP), KEY
	AESDECLAST KEY STATE
	ret

/*
 * _aesni_dec4:	internal ABI
 * input:
 *	KEYP:		key struct pointer
 *	KLEN:		key length
 *	STATE1:		initial state (input)
 *	STATE2
 *	STATE3
 *	STATE4
 * output:
 *	STATE1:		finial state (output)
 *	STATE2
 *	STATE3
 *	STATE4
 * changed:
 *	KEY
 *	TKEYP (T1)
 */
_aesni_dec4:
	movaps (KEYP), KEY		# key
	mov KEYP, TKEYP
	pxor KEY, STATE1		# round 0
	pxor KEY, STATE2
	pxor KEY, STATE3
	pxor KEY, STATE4
	add $0x30, TKEYP
	cmp $24, KLEN
	jb .L4dec128
	lea 0x20(TKEYP), TKEYP
	je .L4dec192
	add $0x20, TKEYP
	movaps -0x60(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps -0x50(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
.align 4
.L4dec192:
	movaps -0x40(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps -0x30(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
.align 4
.L4dec128:
	movaps -0x20(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps -0x10(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps (TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x10(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x20(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x30(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x40(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x50(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x60(TKEYP), KEY
	AESDEC KEY STATE1
	AESDEC KEY STATE2
	AESDEC KEY STATE3
	AESDEC KEY STATE4
	movaps 0x70(TKEYP), KEY
	AESDECLAST KEY STATE1		# last round
	AESDECLAST KEY STATE2
	AESDECLAST KEY STATE3
	AESDECLAST KEY STATE4
	ret

/*
 * void aesni_ecb_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
 *		      size_t len)
 */
ENTRY(aesni_ecb_enc)
	test LEN, LEN		# check length
	jz .Lecb_enc_ret
	mov 480(KEYP), KLEN
	cmp $16, LEN
	jb .Lecb_enc_ret
	cmp $64, LEN
	jb .Lecb_enc_loop1
.align 4
.Lecb_enc_loop4:
	movups (INP), STATE1
	movups 0x10(INP), STATE2
	movups 0x20(INP), STATE3
	movups 0x30(INP), STATE4
	call _aesni_enc4
	movups STATE1, (OUTP)
	movups STATE2, 0x10(OUTP)
	movups STATE3, 0x20(OUTP)
	movups STATE4, 0x30(OUTP)
	sub $64, LEN
	add $64, INP
	add $64, OUTP
	cmp $64, LEN
	jge .Lecb_enc_loop4
	cmp $16, LEN
	jb .Lecb_enc_ret
.align 4
.Lecb_enc_loop1:
	movups (INP), STATE1
	call _aesni_enc1
	movups STATE1, (OUTP)
	sub $16, LEN
	add $16, INP
	add $16, OUTP
	cmp $16, LEN
	jge .Lecb_enc_loop1
.Lecb_enc_ret:
	ret

/*
 * void aesni_ecb_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
 *		      size_t len);
 */
ENTRY(aesni_ecb_dec)
	test LEN, LEN
	jz .Lecb_dec_ret
	mov 480(KEYP), KLEN
	add $240, KEYP
	cmp $16, LEN
	jb .Lecb_dec_ret
	cmp $64, LEN
	jb .Lecb_dec_loop1
.align 4
.Lecb_dec_loop4:
	movups (INP), STATE1
	movups 0x10(INP), STATE2
	movups 0x20(INP), STATE3
	movups 0x30(INP), STATE4
	call _aesni_dec4
	movups STATE1, (OUTP)
	movups STATE2, 0x10(OUTP)
	movups STATE3, 0x20(OUTP)
	movups STATE4, 0x30(OUTP)
	sub $64, LEN
	add $64, INP
	add $64, OUTP
	cmp $64, LEN
	jge .Lecb_dec_loop4
	cmp $16, LEN
	jb .Lecb_dec_ret
.align 4
.Lecb_dec_loop1:
	movups (INP), STATE1
	call _aesni_dec1
	movups STATE1, (OUTP)
	sub $16, LEN
	add $16, INP
	add $16, OUTP
	cmp $16, LEN
	jge .Lecb_dec_loop1
.Lecb_dec_ret:
	ret

/*
 * void aesni_cbc_enc(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
 *		      size_t len, u8 *iv)
 */
ENTRY(aesni_cbc_enc)
	cmp $16, LEN
	jb .Lcbc_enc_ret
	mov 480(KEYP), KLEN
	movups (IVP), STATE	# load iv as initial state
.align 4
.Lcbc_enc_loop:
	movups (INP), IN	# load input
	pxor IN, STATE
	call _aesni_enc1
	movups STATE, (OUTP)	# store output
	sub $16, LEN
	add $16, INP
	add $16, OUTP
	cmp $16, LEN
	jge .Lcbc_enc_loop
	movups STATE, (IVP)
.Lcbc_enc_ret:
	ret

/*
 * void aesni_cbc_dec(struct crypto_aes_ctx *ctx, const u8 *dst, u8 *src,
 *		      size_t len, u8 *iv)
 */
ENTRY(aesni_cbc_dec)
	cmp $16, LEN
	jb .Lcbc_dec_just_ret
	mov 480(KEYP), KLEN
	add $240, KEYP
	movups (IVP), IV
	cmp $64, LEN
	jb .Lcbc_dec_loop1
.align 4
.Lcbc_dec_loop4:
	movups (INP), IN1
	movaps IN1, STATE1
	movups 0x10(INP), IN2
	movaps IN2, STATE2
	movups 0x20(INP), IN3
	movaps IN3, STATE3
	movups 0x30(INP), IN4
	movaps IN4, STATE4
	call _aesni_dec4
	pxor IV, STATE1
	pxor IN1, STATE2
	pxor IN2, STATE3
	pxor IN3, STATE4
	movaps IN4, IV
	movups STATE1, (OUTP)
	movups STATE2, 0x10(OUTP)
	movups STATE3, 0x20(OUTP)
	movups STATE4, 0x30(OUTP)
	sub $64, LEN
	add $64, INP
	add $64, OUTP
	cmp $64, LEN
	jge .Lcbc_dec_loop4
	cmp $16, LEN
	jb .Lcbc_dec_ret
.align 4
.Lcbc_dec_loop1:
	movups (INP), IN
	movaps IN, STATE
	call _aesni_dec1
	pxor IV, STATE
	movups STATE, (OUTP)
	movaps IN, IV
	sub $16, LEN
	add $16, INP
	add $16, OUTP
	cmp $16, LEN
	jge .Lcbc_dec_loop1
.Lcbc_dec_ret:
	movups IV, (IVP)
.Lcbc_dec_just_ret:
	ret