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
|
/*
* Intel SHA Extensions optimized implementation of a SHA-1 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>
#define DIGEST_PTR %rdi /* 1st arg */
#define DATA_PTR %rsi /* 2nd arg */
#define NUM_BLKS %rdx /* 3rd arg */
/* gcc conversion */
#define FRAME_SIZE 32 /* space for 2x16 bytes */
#define ABCD %xmm0
#define E0 %xmm1 /* Need two E's b/c they ping pong */
#define E1 %xmm2
#define MSG0 %xmm3
#define MSG1 %xmm4
#define MSG2 %xmm5
#define MSG3 %xmm6
#define SHUF_MASK %xmm7
/*
* Intel SHA Extensions optimized implementation of a SHA-1 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 sha1_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
.align 32
SYM_FUNC_START(sha1_ni_transform)
push %rbp
mov %rsp, %rbp
sub $FRAME_SIZE, %rsp
and $~0xF, %rsp
shl $6, NUM_BLKS /* convert to bytes */
jz .Ldone_hash
add DATA_PTR, NUM_BLKS /* pointer to end of data */
/* load initial hash values */
pinsrd $3, 1*16(DIGEST_PTR), E0
movdqu 0*16(DIGEST_PTR), ABCD
pand UPPER_WORD_MASK(%rip), E0
pshufd $0x1B, ABCD, ABCD
movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK
.Lloop0:
/* Save hash values for addition after rounds */
movdqa E0, (0*16)(%rsp)
movdqa ABCD, (1*16)(%rsp)
/* Rounds 0-3 */
movdqu 0*16(DATA_PTR), MSG0
pshufb SHUF_MASK, MSG0
paddd MSG0, E0
movdqa ABCD, E1
sha1rnds4 $0, E0, ABCD
/* Rounds 4-7 */
movdqu 1*16(DATA_PTR), MSG1
pshufb SHUF_MASK, MSG1
sha1nexte MSG1, E1
movdqa ABCD, E0
sha1rnds4 $0, E1, ABCD
sha1msg1 MSG1, MSG0
/* Rounds 8-11 */
movdqu 2*16(DATA_PTR), MSG2
pshufb SHUF_MASK, MSG2
sha1nexte MSG2, E0
movdqa ABCD, E1
sha1rnds4 $0, E0, ABCD
sha1msg1 MSG2, MSG1
pxor MSG2, MSG0
/* Rounds 12-15 */
movdqu 3*16(DATA_PTR), MSG3
pshufb SHUF_MASK, MSG3
sha1nexte MSG3, E1
movdqa ABCD, E0
sha1msg2 MSG3, MSG0
sha1rnds4 $0, E1, ABCD
sha1msg1 MSG3, MSG2
pxor MSG3, MSG1
/* Rounds 16-19 */
sha1nexte MSG0, E0
movdqa ABCD, E1
sha1msg2 MSG0, MSG1
sha1rnds4 $0, E0, ABCD
sha1msg1 MSG0, MSG3
pxor MSG0, MSG2
/* Rounds 20-23 */
sha1nexte MSG1, E1
movdqa ABCD, E0
sha1msg2 MSG1, MSG2
sha1rnds4 $1, E1, ABCD
sha1msg1 MSG1, MSG0
pxor MSG1, MSG3
/* Rounds 24-27 */
sha1nexte MSG2, E0
movdqa ABCD, E1
sha1msg2 MSG2, MSG3
sha1rnds4 $1, E0, ABCD
sha1msg1 MSG2, MSG1
pxor MSG2, MSG0
/* Rounds 28-31 */
sha1nexte MSG3, E1
movdqa ABCD, E0
sha1msg2 MSG3, MSG0
sha1rnds4 $1, E1, ABCD
sha1msg1 MSG3, MSG2
pxor MSG3, MSG1
/* Rounds 32-35 */
sha1nexte MSG0, E0
movdqa ABCD, E1
sha1msg2 MSG0, MSG1
sha1rnds4 $1, E0, ABCD
sha1msg1 MSG0, MSG3
pxor MSG0, MSG2
/* Rounds 36-39 */
sha1nexte MSG1, E1
movdqa ABCD, E0
sha1msg2 MSG1, MSG2
sha1rnds4 $1, E1, ABCD
sha1msg1 MSG1, MSG0
pxor MSG1, MSG3
/* Rounds 40-43 */
sha1nexte MSG2, E0
movdqa ABCD, E1
sha1msg2 MSG2, MSG3
sha1rnds4 $2, E0, ABCD
sha1msg1 MSG2, MSG1
pxor MSG2, MSG0
/* Rounds 44-47 */
sha1nexte MSG3, E1
movdqa ABCD, E0
sha1msg2 MSG3, MSG0
sha1rnds4 $2, E1, ABCD
sha1msg1 MSG3, MSG2
pxor MSG3, MSG1
/* Rounds 48-51 */
sha1nexte MSG0, E0
movdqa ABCD, E1
sha1msg2 MSG0, MSG1
sha1rnds4 $2, E0, ABCD
sha1msg1 MSG0, MSG3
pxor MSG0, MSG2
/* Rounds 52-55 */
sha1nexte MSG1, E1
movdqa ABCD, E0
sha1msg2 MSG1, MSG2
sha1rnds4 $2, E1, ABCD
sha1msg1 MSG1, MSG0
pxor MSG1, MSG3
/* Rounds 56-59 */
sha1nexte MSG2, E0
movdqa ABCD, E1
sha1msg2 MSG2, MSG3
sha1rnds4 $2, E0, ABCD
sha1msg1 MSG2, MSG1
pxor MSG2, MSG0
/* Rounds 60-63 */
sha1nexte MSG3, E1
movdqa ABCD, E0
sha1msg2 MSG3, MSG0
sha1rnds4 $3, E1, ABCD
sha1msg1 MSG3, MSG2
pxor MSG3, MSG1
/* Rounds 64-67 */
sha1nexte MSG0, E0
movdqa ABCD, E1
sha1msg2 MSG0, MSG1
sha1rnds4 $3, E0, ABCD
sha1msg1 MSG0, MSG3
pxor MSG0, MSG2
/* Rounds 68-71 */
sha1nexte MSG1, E1
movdqa ABCD, E0
sha1msg2 MSG1, MSG2
sha1rnds4 $3, E1, ABCD
pxor MSG1, MSG3
/* Rounds 72-75 */
sha1nexte MSG2, E0
movdqa ABCD, E1
sha1msg2 MSG2, MSG3
sha1rnds4 $3, E0, ABCD
/* Rounds 76-79 */
sha1nexte MSG3, E1
movdqa ABCD, E0
sha1rnds4 $3, E1, ABCD
/* Add current hash values with previously saved */
sha1nexte (0*16)(%rsp), E0
paddd (1*16)(%rsp), ABCD
/* 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, ABCD, ABCD
movdqu ABCD, 0*16(DIGEST_PTR)
pextrd $3, E0, 1*16(DIGEST_PTR)
.Ldone_hash:
mov %rbp, %rsp
pop %rbp
RET
SYM_FUNC_END(sha1_ni_transform)
.section .rodata.cst16.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 16
.align 16
PSHUFFLE_BYTE_FLIP_MASK:
.octa 0x000102030405060708090a0b0c0d0e0f
.section .rodata.cst16.UPPER_WORD_MASK, "aM", @progbits, 16
.align 16
UPPER_WORD_MASK:
.octa 0xFFFFFFFF000000000000000000000000
|
