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
|
/*
* Intel SHA Extensions optimized implementation of a SHA-256 update function
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program 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
* General Public License for more details.
*
* Contact Information:
* Sean Gulley <sean.m.gulley@intel.com>
* Tim Chen <tim.c.chen@linux.intel.com>
*
* BSD LICENSE
*
* Copyright(c) 2015 Intel Corporation.
*
* 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <linux/linkage.h>
#include <linux/cfi_types.h>
#define DIGEST_PTR %rdi /* 1st arg */
#define DATA_PTR %rsi /* 2nd arg */
#define NUM_BLKS %rdx /* 3rd arg */
#define SHA256CONSTANTS %rax
#define MSG %xmm0
#define STATE0 %xmm1
#define STATE1 %xmm2
#define MSGTMP0 %xmm3
#define MSGTMP1 %xmm4
#define MSGTMP2 %xmm5
#define MSGTMP3 %xmm6
#define MSGTMP4 %xmm7
#define SHUF_MASK %xmm8
#define ABEF_SAVE %xmm9
#define CDGH_SAVE %xmm10
/*
* Intel SHA Extensions optimized implementation of a SHA-256 update function
*
* The function takes a pointer to the current hash values, a pointer to the
* input data, and a number of 64 byte blocks to process. Once all blocks have
* been processed, the digest pointer is updated with the resulting hash value.
* The function only processes complete blocks, there is no functionality to
* store partial blocks. All message padding and hash value initialization must
* be done outside the update function.
*
* The indented lines in the loop are instructions related to rounds processing.
* The non-indented lines are instructions related to the message schedule.
*
* void sha256_ni_transform(uint32_t *digest, const void *data,
uint32_t numBlocks);
* digest : pointer to digest
* data: pointer to input data
* numBlocks: Number of blocks to process
*/
.text
SYM_TYPED_FUNC_START(sha256_ni_transform)
shl $6, NUM_BLKS /* convert to bytes */
jz .Ldone_hash
add DATA_PTR, NUM_BLKS /* pointer to end of data */
/*
* load initial hash values
* Need to reorder these appropriately
* DCBA, HGFE -> ABEF, CDGH
*/
movdqu 0*16(DIGEST_PTR), STATE0
movdqu 1*16(DIGEST_PTR), STATE1
pshufd $0xB1, STATE0, STATE0 /* CDAB */
pshufd $0x1B, STATE1, STATE1 /* EFGH */
movdqa STATE0, MSGTMP4
palignr $8, STATE1, STATE0 /* ABEF */
pblendw $0xF0, MSGTMP4, STATE1 /* CDGH */
movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK
lea K256(%rip), SHA256CONSTANTS
.Lloop0:
/* Save hash values for addition after rounds */
movdqa STATE0, ABEF_SAVE
movdqa STATE1, CDGH_SAVE
/* Rounds 0-3 */
movdqu 0*16(DATA_PTR), MSG
pshufb SHUF_MASK, MSG
movdqa MSG, MSGTMP0
paddd 0*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
/* Rounds 4-7 */
movdqu 1*16(DATA_PTR), MSG
pshufb SHUF_MASK, MSG
movdqa MSG, MSGTMP1
paddd 1*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP1, MSGTMP0
/* Rounds 8-11 */
movdqu 2*16(DATA_PTR), MSG
pshufb SHUF_MASK, MSG
movdqa MSG, MSGTMP2
paddd 2*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP2, MSGTMP1
/* Rounds 12-15 */
movdqu 3*16(DATA_PTR), MSG
pshufb SHUF_MASK, MSG
movdqa MSG, MSGTMP3
paddd 3*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP3, MSGTMP4
palignr $4, MSGTMP2, MSGTMP4
paddd MSGTMP4, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP3, MSGTMP2
/* Rounds 16-19 */
movdqa MSGTMP0, MSG
paddd 4*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP0, MSGTMP4
palignr $4, MSGTMP3, MSGTMP4
paddd MSGTMP4, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP0, MSGTMP3
/* Rounds 20-23 */
movdqa MSGTMP1, MSG
paddd 5*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP1, MSGTMP4
palignr $4, MSGTMP0, MSGTMP4
paddd MSGTMP4, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP1, MSGTMP0
/* Rounds 24-27 */
movdqa MSGTMP2, MSG
paddd 6*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP2, MSGTMP4
palignr $4, MSGTMP1, MSGTMP4
paddd MSGTMP4, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP2, MSGTMP1
/* Rounds 28-31 */
movdqa MSGTMP3, MSG
paddd 7*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP3, MSGTMP4
palignr $4, MSGTMP2, MSGTMP4
paddd MSGTMP4, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP3, MSGTMP2
/* Rounds 32-35 */
movdqa MSGTMP0, MSG
paddd 8*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP0, MSGTMP4
palignr $4, MSGTMP3, MSGTMP4
paddd MSGTMP4, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP0, MSGTMP3
/* Rounds 36-39 */
movdqa MSGTMP1, MSG
paddd 9*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP1, MSGTMP4
palignr $4, MSGTMP0, MSGTMP4
paddd MSGTMP4, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP1, MSGTMP0
/* Rounds 40-43 */
movdqa MSGTMP2, MSG
paddd 10*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP2, MSGTMP4
palignr $4, MSGTMP1, MSGTMP4
paddd MSGTMP4, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP2, MSGTMP1
/* Rounds 44-47 */
movdqa MSGTMP3, MSG
paddd 11*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP3, MSGTMP4
palignr $4, MSGTMP2, MSGTMP4
paddd MSGTMP4, MSGTMP0
sha256msg2 MSGTMP3, MSGTMP0
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP3, MSGTMP2
/* Rounds 48-51 */
movdqa MSGTMP0, MSG
paddd 12*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP0, MSGTMP4
palignr $4, MSGTMP3, MSGTMP4
paddd MSGTMP4, MSGTMP1
sha256msg2 MSGTMP0, MSGTMP1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
sha256msg1 MSGTMP0, MSGTMP3
/* Rounds 52-55 */
movdqa MSGTMP1, MSG
paddd 13*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP1, MSGTMP4
palignr $4, MSGTMP0, MSGTMP4
paddd MSGTMP4, MSGTMP2
sha256msg2 MSGTMP1, MSGTMP2
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
/* Rounds 56-59 */
movdqa MSGTMP2, MSG
paddd 14*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
movdqa MSGTMP2, MSGTMP4
palignr $4, MSGTMP1, MSGTMP4
paddd MSGTMP4, MSGTMP3
sha256msg2 MSGTMP2, MSGTMP3
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
/* Rounds 60-63 */
movdqa MSGTMP3, MSG
paddd 15*16(SHA256CONSTANTS), MSG
sha256rnds2 STATE0, STATE1
pshufd $0x0E, MSG, MSG
sha256rnds2 STATE1, STATE0
/* Add current hash values with previously saved */
paddd ABEF_SAVE, STATE0
paddd CDGH_SAVE, STATE1
/* Increment data pointer and loop if more to process */
add $64, DATA_PTR
cmp NUM_BLKS, DATA_PTR
jne .Lloop0
/* Write hash values back in the correct order */
pshufd $0x1B, STATE0, STATE0 /* FEBA */
pshufd $0xB1, STATE1, STATE1 /* DCHG */
movdqa STATE0, MSGTMP4
pblendw $0xF0, STATE1, STATE0 /* DCBA */
palignr $8, MSGTMP4, STATE1 /* HGFE */
movdqu STATE0, 0*16(DIGEST_PTR)
movdqu STATE1, 1*16(DIGEST_PTR)
.Ldone_hash:
RET
SYM_FUNC_END(sha256_ni_transform)
.section .rodata.cst256.K256, "aM", @progbits, 256
.align 64
K256:
.long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
.long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
.long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
.long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
.long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
.long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
.long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
.long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
.long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
.long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
.long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
.long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
.long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
.long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
.long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
.long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
.section .rodata.cst16.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 16
.align 16
PSHUFFLE_BYTE_FLIP_MASK:
.octa 0x0c0d0e0f08090a0b0405060700010203
|
