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
|
#if defined(__arm__)
#include "arm_arch.h"
.syntax unified
.text
.code 32
#ifdef __APPLE__
#define ldrplb ldrbpl
#define ldrneb ldrbne
#endif
.type rem_4bit,%object
.align 5
rem_4bit:
.short 0x0000,0x1C20,0x3840,0x2460
.short 0x7080,0x6CA0,0x48C0,0x54E0
.short 0xE100,0xFD20,0xD940,0xC560
.short 0x9180,0x8DA0,0xA9C0,0xB5E0
.size rem_4bit,.-rem_4bit
.type rem_4bit_get,%function
rem_4bit_get:
sub r2,pc,#8
sub r2,r2,#32 @ &rem_4bit
b .Lrem_4bit_got
nop
.size rem_4bit_get,.-rem_4bit_get
.globl gcm_ghash_4bit
.hidden gcm_ghash_4bit
.type gcm_ghash_4bit,%function
gcm_ghash_4bit:
sub r12,pc,#8
add r3,r2,r3 @ r3 to point at the end
stmdb sp!,{r3,r4,r5,r6,r7,r8,r9,r10,r11,lr} @ save r3/end too
sub r12,r12,#48 @ &rem_4bit
ldmia r12,{r4,r5,r6,r7,r8,r9,r10,r11} @ copy rem_4bit ...
stmdb sp!,{r4,r5,r6,r7,r8,r9,r10,r11} @ ... to stack
ldrb r12,[r2,#15]
ldrb r14,[r0,#15]
.Louter:
eor r12,r12,r14
and r14,r12,#0xf0
and r12,r12,#0x0f
mov r3,#14
add r7,r1,r12,lsl#4
ldmia r7,{r4,r5,r6,r7} @ load Htbl[nlo]
add r11,r1,r14
ldrb r12,[r2,#14]
and r14,r4,#0xf @ rem
ldmia r11,{r8,r9,r10,r11} @ load Htbl[nhi]
add r14,r14,r14
eor r4,r8,r4,lsr#4
ldrh r8,[sp,r14] @ rem_4bit[rem]
eor r4,r4,r5,lsl#28
ldrb r14,[r0,#14]
eor r5,r9,r5,lsr#4
eor r5,r5,r6,lsl#28
eor r6,r10,r6,lsr#4
eor r6,r6,r7,lsl#28
eor r7,r11,r7,lsr#4
eor r12,r12,r14
and r14,r12,#0xf0
and r12,r12,#0x0f
eor r7,r7,r8,lsl#16
.Linner:
add r11,r1,r12,lsl#4
and r12,r4,#0xf @ rem
subs r3,r3,#1
add r12,r12,r12
ldmia r11,{r8,r9,r10,r11} @ load Htbl[nlo]
eor r4,r8,r4,lsr#4
eor r4,r4,r5,lsl#28
eor r5,r9,r5,lsr#4
eor r5,r5,r6,lsl#28
ldrh r8,[sp,r12] @ rem_4bit[rem]
eor r6,r10,r6,lsr#4
ldrbpl r12,[r2,r3]
eor r6,r6,r7,lsl#28
eor r7,r11,r7,lsr#4
add r11,r1,r14
and r14,r4,#0xf @ rem
eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem]
add r14,r14,r14
ldmia r11,{r8,r9,r10,r11} @ load Htbl[nhi]
eor r4,r8,r4,lsr#4
ldrbpl r8,[r0,r3]
eor r4,r4,r5,lsl#28
eor r5,r9,r5,lsr#4
ldrh r9,[sp,r14]
eor r5,r5,r6,lsl#28
eor r6,r10,r6,lsr#4
eor r6,r6,r7,lsl#28
eorpl r12,r12,r8
eor r7,r11,r7,lsr#4
andpl r14,r12,#0xf0
andpl r12,r12,#0x0f
eor r7,r7,r9,lsl#16 @ ^= rem_4bit[rem]
bpl .Linner
ldr r3,[sp,#32] @ re-load r3/end
add r2,r2,#16
mov r14,r4
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r4,r4
str r4,[r0,#12]
#elif defined(__ARMEB__)
str r4,[r0,#12]
#else
mov r9,r4,lsr#8
strb r4,[r0,#12+3]
mov r10,r4,lsr#16
strb r9,[r0,#12+2]
mov r11,r4,lsr#24
strb r10,[r0,#12+1]
strb r11,[r0,#12]
#endif
cmp r2,r3
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r5,r5
str r5,[r0,#8]
#elif defined(__ARMEB__)
str r5,[r0,#8]
#else
mov r9,r5,lsr#8
strb r5,[r0,#8+3]
mov r10,r5,lsr#16
strb r9,[r0,#8+2]
mov r11,r5,lsr#24
strb r10,[r0,#8+1]
strb r11,[r0,#8]
#endif
ldrbne r12,[r2,#15]
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r6,r6
str r6,[r0,#4]
#elif defined(__ARMEB__)
str r6,[r0,#4]
#else
mov r9,r6,lsr#8
strb r6,[r0,#4+3]
mov r10,r6,lsr#16
strb r9,[r0,#4+2]
mov r11,r6,lsr#24
strb r10,[r0,#4+1]
strb r11,[r0,#4]
#endif
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r7,r7
str r7,[r0,#0]
#elif defined(__ARMEB__)
str r7,[r0,#0]
#else
mov r9,r7,lsr#8
strb r7,[r0,#0+3]
mov r10,r7,lsr#16
strb r9,[r0,#0+2]
mov r11,r7,lsr#24
strb r10,[r0,#0+1]
strb r11,[r0,#0]
#endif
bne .Louter
add sp,sp,#36
#if __ARM_ARCH__>=5
ldmia sp!,{r4,r5,r6,r7,r8,r9,r10,r11,pc}
#else
ldmia sp!,{r4,r5,r6,r7,r8,r9,r10,r11,lr}
tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
.word 0xe12fff1e @ interoperable with Thumb ISA:-)
#endif
.size gcm_ghash_4bit,.-gcm_ghash_4bit
.globl gcm_gmult_4bit
.hidden gcm_gmult_4bit
.type gcm_gmult_4bit,%function
gcm_gmult_4bit:
stmdb sp!,{r4,r5,r6,r7,r8,r9,r10,r11,lr}
ldrb r12,[r0,#15]
b rem_4bit_get
.Lrem_4bit_got:
and r14,r12,#0xf0
and r12,r12,#0x0f
mov r3,#14
add r7,r1,r12,lsl#4
ldmia r7,{r4,r5,r6,r7} @ load Htbl[nlo]
ldrb r12,[r0,#14]
add r11,r1,r14
and r14,r4,#0xf @ rem
ldmia r11,{r8,r9,r10,r11} @ load Htbl[nhi]
add r14,r14,r14
eor r4,r8,r4,lsr#4
ldrh r8,[r2,r14] @ rem_4bit[rem]
eor r4,r4,r5,lsl#28
eor r5,r9,r5,lsr#4
eor r5,r5,r6,lsl#28
eor r6,r10,r6,lsr#4
eor r6,r6,r7,lsl#28
eor r7,r11,r7,lsr#4
and r14,r12,#0xf0
eor r7,r7,r8,lsl#16
and r12,r12,#0x0f
.Loop:
add r11,r1,r12,lsl#4
and r12,r4,#0xf @ rem
subs r3,r3,#1
add r12,r12,r12
ldmia r11,{r8,r9,r10,r11} @ load Htbl[nlo]
eor r4,r8,r4,lsr#4
eor r4,r4,r5,lsl#28
eor r5,r9,r5,lsr#4
eor r5,r5,r6,lsl#28
ldrh r8,[r2,r12] @ rem_4bit[rem]
eor r6,r10,r6,lsr#4
ldrbpl r12,[r0,r3]
eor r6,r6,r7,lsl#28
eor r7,r11,r7,lsr#4
add r11,r1,r14
and r14,r4,#0xf @ rem
eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem]
add r14,r14,r14
ldmia r11,{r8,r9,r10,r11} @ load Htbl[nhi]
eor r4,r8,r4,lsr#4
eor r4,r4,r5,lsl#28
eor r5,r9,r5,lsr#4
ldrh r8,[r2,r14] @ rem_4bit[rem]
eor r5,r5,r6,lsl#28
eor r6,r10,r6,lsr#4
eor r6,r6,r7,lsl#28
eor r7,r11,r7,lsr#4
andpl r14,r12,#0xf0
andpl r12,r12,#0x0f
eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem]
bpl .Loop
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r4,r4
str r4,[r0,#12]
#elif defined(__ARMEB__)
str r4,[r0,#12]
#else
mov r9,r4,lsr#8
strb r4,[r0,#12+3]
mov r10,r4,lsr#16
strb r9,[r0,#12+2]
mov r11,r4,lsr#24
strb r10,[r0,#12+1]
strb r11,[r0,#12]
#endif
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r5,r5
str r5,[r0,#8]
#elif defined(__ARMEB__)
str r5,[r0,#8]
#else
mov r9,r5,lsr#8
strb r5,[r0,#8+3]
mov r10,r5,lsr#16
strb r9,[r0,#8+2]
mov r11,r5,lsr#24
strb r10,[r0,#8+1]
strb r11,[r0,#8]
#endif
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r6,r6
str r6,[r0,#4]
#elif defined(__ARMEB__)
str r6,[r0,#4]
#else
mov r9,r6,lsr#8
strb r6,[r0,#4+3]
mov r10,r6,lsr#16
strb r9,[r0,#4+2]
mov r11,r6,lsr#24
strb r10,[r0,#4+1]
strb r11,[r0,#4]
#endif
#if __ARM_ARCH__>=7 && defined(__ARMEL__)
rev r7,r7
str r7,[r0,#0]
#elif defined(__ARMEB__)
str r7,[r0,#0]
#else
mov r9,r7,lsr#8
strb r7,[r0,#0+3]
mov r10,r7,lsr#16
strb r9,[r0,#0+2]
mov r11,r7,lsr#24
strb r10,[r0,#0+1]
strb r11,[r0,#0]
#endif
#if __ARM_ARCH__>=5
ldmia sp!,{r4,r5,r6,r7,r8,r9,r10,r11,pc}
#else
ldmia sp!,{r4,r5,r6,r7,r8,r9,r10,r11,lr}
tst lr,#1
moveq pc,lr @ be binary compatible with V4, yet
.word 0xe12fff1e @ interoperable with Thumb ISA:-)
#endif
.size gcm_gmult_4bit,.-gcm_gmult_4bit
#if __ARM_MAX_ARCH__>=7
.arch armv7-a
.fpu neon
.globl gcm_init_neon
.hidden gcm_init_neon
.type gcm_init_neon,%function
.align 4
gcm_init_neon:
vld1.64 d7,[r1]! @ load H
vmov.i8 q8,#0xe1
vld1.64 d6,[r1]
vshl.i64 d17,#57
vshr.u64 d16,#63 @ t0=0xc2....01
vdup.8 q9,d7[7]
vshr.u64 d26,d6,#63
vshr.s8 q9,#7 @ broadcast carry bit
vshl.i64 q3,q3,#1
vand q8,q8,q9
vorr d7,d26 @ H<<<=1
veor q3,q3,q8 @ twisted H
vstmia r0,{q3}
bx lr @ bx lr
.size gcm_init_neon,.-gcm_init_neon
.globl gcm_gmult_neon
.hidden gcm_gmult_neon
.type gcm_gmult_neon,%function
.align 4
gcm_gmult_neon:
vld1.64 d7,[r0]! @ load Xi
vld1.64 d6,[r0]!
vmov.i64 d29,#0x0000ffffffffffff
vldmia r1,{d26,d27} @ load twisted H
vmov.i64 d30,#0x00000000ffffffff
#ifdef __ARMEL__
vrev64.8 q3,q3
#endif
vmov.i64 d31,#0x000000000000ffff
veor d28,d26,d27 @ Karatsuba pre-processing
mov r3,#16
b .Lgmult_neon
.size gcm_gmult_neon,.-gcm_gmult_neon
.globl gcm_ghash_neon
.hidden gcm_ghash_neon
.type gcm_ghash_neon,%function
.align 4
gcm_ghash_neon:
vld1.64 d1,[r0]! @ load Xi
vld1.64 d0,[r0]!
vmov.i64 d29,#0x0000ffffffffffff
vldmia r1,{d26,d27} @ load twisted H
vmov.i64 d30,#0x00000000ffffffff
#ifdef __ARMEL__
vrev64.8 q0,q0
#endif
vmov.i64 d31,#0x000000000000ffff
veor d28,d26,d27 @ Karatsuba pre-processing
.Loop_neon:
vld1.64 d7,[r2]! @ load inp
vld1.64 d6,[r2]!
#ifdef __ARMEL__
vrev64.8 q3,q3
#endif
veor q3,q0 @ inp^=Xi
.Lgmult_neon:
vext.8 d16, d26, d26, #1 @ A1
vmull.p8 q8, d16, d6 @ F = A1*B
vext.8 d0, d6, d6, #1 @ B1
vmull.p8 q0, d26, d0 @ E = A*B1
vext.8 d18, d26, d26, #2 @ A2
vmull.p8 q9, d18, d6 @ H = A2*B
vext.8 d22, d6, d6, #2 @ B2
vmull.p8 q11, d26, d22 @ G = A*B2
vext.8 d20, d26, d26, #3 @ A3
veor q8, q8, q0 @ L = E + F
vmull.p8 q10, d20, d6 @ J = A3*B
vext.8 d0, d6, d6, #3 @ B3
veor q9, q9, q11 @ M = G + H
vmull.p8 q0, d26, d0 @ I = A*B3
veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8
vand d17, d17, d29
vext.8 d22, d6, d6, #4 @ B4
veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16
vand d19, d19, d30
vmull.p8 q11, d26, d22 @ K = A*B4
veor q10, q10, q0 @ N = I + J
veor d16, d16, d17
veor d18, d18, d19
veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24
vand d21, d21, d31
vext.8 q8, q8, q8, #15
veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32
vmov.i64 d23, #0
vext.8 q9, q9, q9, #14
veor d20, d20, d21
vmull.p8 q0, d26, d6 @ D = A*B
vext.8 q11, q11, q11, #12
vext.8 q10, q10, q10, #13
veor q8, q8, q9
veor q10, q10, q11
veor q0, q0, q8
veor q0, q0, q10
veor d6,d6,d7 @ Karatsuba pre-processing
vext.8 d16, d28, d28, #1 @ A1
vmull.p8 q8, d16, d6 @ F = A1*B
vext.8 d2, d6, d6, #1 @ B1
vmull.p8 q1, d28, d2 @ E = A*B1
vext.8 d18, d28, d28, #2 @ A2
vmull.p8 q9, d18, d6 @ H = A2*B
vext.8 d22, d6, d6, #2 @ B2
vmull.p8 q11, d28, d22 @ G = A*B2
vext.8 d20, d28, d28, #3 @ A3
veor q8, q8, q1 @ L = E + F
vmull.p8 q10, d20, d6 @ J = A3*B
vext.8 d2, d6, d6, #3 @ B3
veor q9, q9, q11 @ M = G + H
vmull.p8 q1, d28, d2 @ I = A*B3
veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8
vand d17, d17, d29
vext.8 d22, d6, d6, #4 @ B4
veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16
vand d19, d19, d30
vmull.p8 q11, d28, d22 @ K = A*B4
veor q10, q10, q1 @ N = I + J
veor d16, d16, d17
veor d18, d18, d19
veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24
vand d21, d21, d31
vext.8 q8, q8, q8, #15
veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32
vmov.i64 d23, #0
vext.8 q9, q9, q9, #14
veor d20, d20, d21
vmull.p8 q1, d28, d6 @ D = A*B
vext.8 q11, q11, q11, #12
vext.8 q10, q10, q10, #13
veor q8, q8, q9
veor q10, q10, q11
veor q1, q1, q8
veor q1, q1, q10
vext.8 d16, d27, d27, #1 @ A1
vmull.p8 q8, d16, d7 @ F = A1*B
vext.8 d4, d7, d7, #1 @ B1
vmull.p8 q2, d27, d4 @ E = A*B1
vext.8 d18, d27, d27, #2 @ A2
vmull.p8 q9, d18, d7 @ H = A2*B
vext.8 d22, d7, d7, #2 @ B2
vmull.p8 q11, d27, d22 @ G = A*B2
vext.8 d20, d27, d27, #3 @ A3
veor q8, q8, q2 @ L = E + F
vmull.p8 q10, d20, d7 @ J = A3*B
vext.8 d4, d7, d7, #3 @ B3
veor q9, q9, q11 @ M = G + H
vmull.p8 q2, d27, d4 @ I = A*B3
veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8
vand d17, d17, d29
vext.8 d22, d7, d7, #4 @ B4
veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16
vand d19, d19, d30
vmull.p8 q11, d27, d22 @ K = A*B4
veor q10, q10, q2 @ N = I + J
veor d16, d16, d17
veor d18, d18, d19
veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24
vand d21, d21, d31
vext.8 q8, q8, q8, #15
veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32
vmov.i64 d23, #0
vext.8 q9, q9, q9, #14
veor d20, d20, d21
vmull.p8 q2, d27, d7 @ D = A*B
vext.8 q11, q11, q11, #12
vext.8 q10, q10, q10, #13
veor q8, q8, q9
veor q10, q10, q11
veor q2, q2, q8
veor q2, q2, q10
veor q1,q1,q0 @ Karatsuba post-processing
veor q1,q1,q2
veor d1,d1,d2
veor d4,d4,d3 @ Xh|Xl - 256-bit result
@ equivalent of reduction_avx from ghash-x86_64.pl
vshl.i64 q9,q0,#57 @ 1st phase
vshl.i64 q10,q0,#62
veor q10,q10,q9 @
vshl.i64 q9,q0,#63
veor q10, q10, q9 @
veor d1,d1,d20 @
veor d4,d4,d21
vshr.u64 q10,q0,#1 @ 2nd phase
veor q2,q2,q0
veor q0,q0,q10 @
vshr.u64 q10,q10,#6
vshr.u64 q0,q0,#1 @
veor q0,q0,q2 @
veor q0,q0,q10 @
subs r3,#16
bne .Loop_neon
#ifdef __ARMEL__
vrev64.8 q0,q0
#endif
sub r0,#16
vst1.64 d1,[r0]! @ write out Xi
vst1.64 d0,[r0]
bx lr @ bx lr
.size gcm_ghash_neon,.-gcm_ghash_neon
#endif
.byte 71,72,65,83,72,32,102,111,114,32,65,82,77,118,52,47,78,69,79,78,44,32,67,82,89,80,84,79,71,65,77,83,32,98,121,32,60,97,112,112,114,111,64,111,112,101,110,115,115,108,46,111,114,103,62,0
.align 2
.align 2
#endif
|
