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3d1e93cd MW |
1 | /* |
2 | * ChaCha20 256-bit cipher algorithm, RFC7539, x64 AVX2 functions | |
3 | * | |
4 | * Copyright (C) 2015 Martin Willi | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/linkage.h> | |
13 | ||
14 | .data | |
15 | .align 32 | |
16 | ||
17 | ROT8: .octa 0x0e0d0c0f0a09080b0605040702010003 | |
18 | .octa 0x0e0d0c0f0a09080b0605040702010003 | |
19 | ROT16: .octa 0x0d0c0f0e09080b0a0504070601000302 | |
20 | .octa 0x0d0c0f0e09080b0a0504070601000302 | |
21 | CTRINC: .octa 0x00000003000000020000000100000000 | |
22 | .octa 0x00000007000000060000000500000004 | |
23 | ||
24 | .text | |
25 | ||
26 | ENTRY(chacha20_8block_xor_avx2) | |
27 | # %rdi: Input state matrix, s | |
28 | # %rsi: 8 data blocks output, o | |
29 | # %rdx: 8 data blocks input, i | |
30 | ||
31 | # This function encrypts eight consecutive ChaCha20 blocks by loading | |
32 | # the state matrix in AVX registers eight times. As we need some | |
33 | # scratch registers, we save the first four registers on the stack. The | |
34 | # algorithm performs each operation on the corresponding word of each | |
35 | # state matrix, hence requires no word shuffling. For final XORing step | |
36 | # we transpose the matrix by interleaving 32-, 64- and then 128-bit | |
37 | # words, which allows us to do XOR in AVX registers. 8/16-bit word | |
38 | # rotation is done with the slightly better performing byte shuffling, | |
39 | # 7/12-bit word rotation uses traditional shift+OR. | |
40 | ||
41 | vzeroupper | |
42 | # 4 * 32 byte stack, 32-byte aligned | |
43 | mov %rsp, %r8 | |
44 | and $~31, %rsp | |
45 | sub $0x80, %rsp | |
46 | ||
47 | # x0..15[0-7] = s[0..15] | |
48 | vpbroadcastd 0x00(%rdi),%ymm0 | |
49 | vpbroadcastd 0x04(%rdi),%ymm1 | |
50 | vpbroadcastd 0x08(%rdi),%ymm2 | |
51 | vpbroadcastd 0x0c(%rdi),%ymm3 | |
52 | vpbroadcastd 0x10(%rdi),%ymm4 | |
53 | vpbroadcastd 0x14(%rdi),%ymm5 | |
54 | vpbroadcastd 0x18(%rdi),%ymm6 | |
55 | vpbroadcastd 0x1c(%rdi),%ymm7 | |
56 | vpbroadcastd 0x20(%rdi),%ymm8 | |
57 | vpbroadcastd 0x24(%rdi),%ymm9 | |
58 | vpbroadcastd 0x28(%rdi),%ymm10 | |
59 | vpbroadcastd 0x2c(%rdi),%ymm11 | |
60 | vpbroadcastd 0x30(%rdi),%ymm12 | |
61 | vpbroadcastd 0x34(%rdi),%ymm13 | |
62 | vpbroadcastd 0x38(%rdi),%ymm14 | |
63 | vpbroadcastd 0x3c(%rdi),%ymm15 | |
64 | # x0..3 on stack | |
65 | vmovdqa %ymm0,0x00(%rsp) | |
66 | vmovdqa %ymm1,0x20(%rsp) | |
67 | vmovdqa %ymm2,0x40(%rsp) | |
68 | vmovdqa %ymm3,0x60(%rsp) | |
69 | ||
70 | vmovdqa CTRINC(%rip),%ymm1 | |
71 | vmovdqa ROT8(%rip),%ymm2 | |
72 | vmovdqa ROT16(%rip),%ymm3 | |
73 | ||
74 | # x12 += counter values 0-3 | |
75 | vpaddd %ymm1,%ymm12,%ymm12 | |
76 | ||
77 | mov $10,%ecx | |
78 | ||
79 | .Ldoubleround8: | |
80 | # x0 += x4, x12 = rotl32(x12 ^ x0, 16) | |
81 | vpaddd 0x00(%rsp),%ymm4,%ymm0 | |
82 | vmovdqa %ymm0,0x00(%rsp) | |
83 | vpxor %ymm0,%ymm12,%ymm12 | |
84 | vpshufb %ymm3,%ymm12,%ymm12 | |
85 | # x1 += x5, x13 = rotl32(x13 ^ x1, 16) | |
86 | vpaddd 0x20(%rsp),%ymm5,%ymm0 | |
87 | vmovdqa %ymm0,0x20(%rsp) | |
88 | vpxor %ymm0,%ymm13,%ymm13 | |
89 | vpshufb %ymm3,%ymm13,%ymm13 | |
90 | # x2 += x6, x14 = rotl32(x14 ^ x2, 16) | |
91 | vpaddd 0x40(%rsp),%ymm6,%ymm0 | |
92 | vmovdqa %ymm0,0x40(%rsp) | |
93 | vpxor %ymm0,%ymm14,%ymm14 | |
94 | vpshufb %ymm3,%ymm14,%ymm14 | |
95 | # x3 += x7, x15 = rotl32(x15 ^ x3, 16) | |
96 | vpaddd 0x60(%rsp),%ymm7,%ymm0 | |
97 | vmovdqa %ymm0,0x60(%rsp) | |
98 | vpxor %ymm0,%ymm15,%ymm15 | |
99 | vpshufb %ymm3,%ymm15,%ymm15 | |
100 | ||
101 | # x8 += x12, x4 = rotl32(x4 ^ x8, 12) | |
102 | vpaddd %ymm12,%ymm8,%ymm8 | |
103 | vpxor %ymm8,%ymm4,%ymm4 | |
104 | vpslld $12,%ymm4,%ymm0 | |
105 | vpsrld $20,%ymm4,%ymm4 | |
106 | vpor %ymm0,%ymm4,%ymm4 | |
107 | # x9 += x13, x5 = rotl32(x5 ^ x9, 12) | |
108 | vpaddd %ymm13,%ymm9,%ymm9 | |
109 | vpxor %ymm9,%ymm5,%ymm5 | |
110 | vpslld $12,%ymm5,%ymm0 | |
111 | vpsrld $20,%ymm5,%ymm5 | |
112 | vpor %ymm0,%ymm5,%ymm5 | |
113 | # x10 += x14, x6 = rotl32(x6 ^ x10, 12) | |
114 | vpaddd %ymm14,%ymm10,%ymm10 | |
115 | vpxor %ymm10,%ymm6,%ymm6 | |
116 | vpslld $12,%ymm6,%ymm0 | |
117 | vpsrld $20,%ymm6,%ymm6 | |
118 | vpor %ymm0,%ymm6,%ymm6 | |
119 | # x11 += x15, x7 = rotl32(x7 ^ x11, 12) | |
120 | vpaddd %ymm15,%ymm11,%ymm11 | |
121 | vpxor %ymm11,%ymm7,%ymm7 | |
122 | vpslld $12,%ymm7,%ymm0 | |
123 | vpsrld $20,%ymm7,%ymm7 | |
124 | vpor %ymm0,%ymm7,%ymm7 | |
125 | ||
126 | # x0 += x4, x12 = rotl32(x12 ^ x0, 8) | |
127 | vpaddd 0x00(%rsp),%ymm4,%ymm0 | |
128 | vmovdqa %ymm0,0x00(%rsp) | |
129 | vpxor %ymm0,%ymm12,%ymm12 | |
130 | vpshufb %ymm2,%ymm12,%ymm12 | |
131 | # x1 += x5, x13 = rotl32(x13 ^ x1, 8) | |
132 | vpaddd 0x20(%rsp),%ymm5,%ymm0 | |
133 | vmovdqa %ymm0,0x20(%rsp) | |
134 | vpxor %ymm0,%ymm13,%ymm13 | |
135 | vpshufb %ymm2,%ymm13,%ymm13 | |
136 | # x2 += x6, x14 = rotl32(x14 ^ x2, 8) | |
137 | vpaddd 0x40(%rsp),%ymm6,%ymm0 | |
138 | vmovdqa %ymm0,0x40(%rsp) | |
139 | vpxor %ymm0,%ymm14,%ymm14 | |
140 | vpshufb %ymm2,%ymm14,%ymm14 | |
141 | # x3 += x7, x15 = rotl32(x15 ^ x3, 8) | |
142 | vpaddd 0x60(%rsp),%ymm7,%ymm0 | |
143 | vmovdqa %ymm0,0x60(%rsp) | |
144 | vpxor %ymm0,%ymm15,%ymm15 | |
145 | vpshufb %ymm2,%ymm15,%ymm15 | |
146 | ||
147 | # x8 += x12, x4 = rotl32(x4 ^ x8, 7) | |
148 | vpaddd %ymm12,%ymm8,%ymm8 | |
149 | vpxor %ymm8,%ymm4,%ymm4 | |
150 | vpslld $7,%ymm4,%ymm0 | |
151 | vpsrld $25,%ymm4,%ymm4 | |
152 | vpor %ymm0,%ymm4,%ymm4 | |
153 | # x9 += x13, x5 = rotl32(x5 ^ x9, 7) | |
154 | vpaddd %ymm13,%ymm9,%ymm9 | |
155 | vpxor %ymm9,%ymm5,%ymm5 | |
156 | vpslld $7,%ymm5,%ymm0 | |
157 | vpsrld $25,%ymm5,%ymm5 | |
158 | vpor %ymm0,%ymm5,%ymm5 | |
159 | # x10 += x14, x6 = rotl32(x6 ^ x10, 7) | |
160 | vpaddd %ymm14,%ymm10,%ymm10 | |
161 | vpxor %ymm10,%ymm6,%ymm6 | |
162 | vpslld $7,%ymm6,%ymm0 | |
163 | vpsrld $25,%ymm6,%ymm6 | |
164 | vpor %ymm0,%ymm6,%ymm6 | |
165 | # x11 += x15, x7 = rotl32(x7 ^ x11, 7) | |
166 | vpaddd %ymm15,%ymm11,%ymm11 | |
167 | vpxor %ymm11,%ymm7,%ymm7 | |
168 | vpslld $7,%ymm7,%ymm0 | |
169 | vpsrld $25,%ymm7,%ymm7 | |
170 | vpor %ymm0,%ymm7,%ymm7 | |
171 | ||
172 | # x0 += x5, x15 = rotl32(x15 ^ x0, 16) | |
173 | vpaddd 0x00(%rsp),%ymm5,%ymm0 | |
174 | vmovdqa %ymm0,0x00(%rsp) | |
175 | vpxor %ymm0,%ymm15,%ymm15 | |
176 | vpshufb %ymm3,%ymm15,%ymm15 | |
177 | # x1 += x6, x12 = rotl32(x12 ^ x1, 16)%ymm0 | |
178 | vpaddd 0x20(%rsp),%ymm6,%ymm0 | |
179 | vmovdqa %ymm0,0x20(%rsp) | |
180 | vpxor %ymm0,%ymm12,%ymm12 | |
181 | vpshufb %ymm3,%ymm12,%ymm12 | |
182 | # x2 += x7, x13 = rotl32(x13 ^ x2, 16) | |
183 | vpaddd 0x40(%rsp),%ymm7,%ymm0 | |
184 | vmovdqa %ymm0,0x40(%rsp) | |
185 | vpxor %ymm0,%ymm13,%ymm13 | |
186 | vpshufb %ymm3,%ymm13,%ymm13 | |
187 | # x3 += x4, x14 = rotl32(x14 ^ x3, 16) | |
188 | vpaddd 0x60(%rsp),%ymm4,%ymm0 | |
189 | vmovdqa %ymm0,0x60(%rsp) | |
190 | vpxor %ymm0,%ymm14,%ymm14 | |
191 | vpshufb %ymm3,%ymm14,%ymm14 | |
192 | ||
193 | # x10 += x15, x5 = rotl32(x5 ^ x10, 12) | |
194 | vpaddd %ymm15,%ymm10,%ymm10 | |
195 | vpxor %ymm10,%ymm5,%ymm5 | |
196 | vpslld $12,%ymm5,%ymm0 | |
197 | vpsrld $20,%ymm5,%ymm5 | |
198 | vpor %ymm0,%ymm5,%ymm5 | |
199 | # x11 += x12, x6 = rotl32(x6 ^ x11, 12) | |
200 | vpaddd %ymm12,%ymm11,%ymm11 | |
201 | vpxor %ymm11,%ymm6,%ymm6 | |
202 | vpslld $12,%ymm6,%ymm0 | |
203 | vpsrld $20,%ymm6,%ymm6 | |
204 | vpor %ymm0,%ymm6,%ymm6 | |
205 | # x8 += x13, x7 = rotl32(x7 ^ x8, 12) | |
206 | vpaddd %ymm13,%ymm8,%ymm8 | |
207 | vpxor %ymm8,%ymm7,%ymm7 | |
208 | vpslld $12,%ymm7,%ymm0 | |
209 | vpsrld $20,%ymm7,%ymm7 | |
210 | vpor %ymm0,%ymm7,%ymm7 | |
211 | # x9 += x14, x4 = rotl32(x4 ^ x9, 12) | |
212 | vpaddd %ymm14,%ymm9,%ymm9 | |
213 | vpxor %ymm9,%ymm4,%ymm4 | |
214 | vpslld $12,%ymm4,%ymm0 | |
215 | vpsrld $20,%ymm4,%ymm4 | |
216 | vpor %ymm0,%ymm4,%ymm4 | |
217 | ||
218 | # x0 += x5, x15 = rotl32(x15 ^ x0, 8) | |
219 | vpaddd 0x00(%rsp),%ymm5,%ymm0 | |
220 | vmovdqa %ymm0,0x00(%rsp) | |
221 | vpxor %ymm0,%ymm15,%ymm15 | |
222 | vpshufb %ymm2,%ymm15,%ymm15 | |
223 | # x1 += x6, x12 = rotl32(x12 ^ x1, 8) | |
224 | vpaddd 0x20(%rsp),%ymm6,%ymm0 | |
225 | vmovdqa %ymm0,0x20(%rsp) | |
226 | vpxor %ymm0,%ymm12,%ymm12 | |
227 | vpshufb %ymm2,%ymm12,%ymm12 | |
228 | # x2 += x7, x13 = rotl32(x13 ^ x2, 8) | |
229 | vpaddd 0x40(%rsp),%ymm7,%ymm0 | |
230 | vmovdqa %ymm0,0x40(%rsp) | |
231 | vpxor %ymm0,%ymm13,%ymm13 | |
232 | vpshufb %ymm2,%ymm13,%ymm13 | |
233 | # x3 += x4, x14 = rotl32(x14 ^ x3, 8) | |
234 | vpaddd 0x60(%rsp),%ymm4,%ymm0 | |
235 | vmovdqa %ymm0,0x60(%rsp) | |
236 | vpxor %ymm0,%ymm14,%ymm14 | |
237 | vpshufb %ymm2,%ymm14,%ymm14 | |
238 | ||
239 | # x10 += x15, x5 = rotl32(x5 ^ x10, 7) | |
240 | vpaddd %ymm15,%ymm10,%ymm10 | |
241 | vpxor %ymm10,%ymm5,%ymm5 | |
242 | vpslld $7,%ymm5,%ymm0 | |
243 | vpsrld $25,%ymm5,%ymm5 | |
244 | vpor %ymm0,%ymm5,%ymm5 | |
245 | # x11 += x12, x6 = rotl32(x6 ^ x11, 7) | |
246 | vpaddd %ymm12,%ymm11,%ymm11 | |
247 | vpxor %ymm11,%ymm6,%ymm6 | |
248 | vpslld $7,%ymm6,%ymm0 | |
249 | vpsrld $25,%ymm6,%ymm6 | |
250 | vpor %ymm0,%ymm6,%ymm6 | |
251 | # x8 += x13, x7 = rotl32(x7 ^ x8, 7) | |
252 | vpaddd %ymm13,%ymm8,%ymm8 | |
253 | vpxor %ymm8,%ymm7,%ymm7 | |
254 | vpslld $7,%ymm7,%ymm0 | |
255 | vpsrld $25,%ymm7,%ymm7 | |
256 | vpor %ymm0,%ymm7,%ymm7 | |
257 | # x9 += x14, x4 = rotl32(x4 ^ x9, 7) | |
258 | vpaddd %ymm14,%ymm9,%ymm9 | |
259 | vpxor %ymm9,%ymm4,%ymm4 | |
260 | vpslld $7,%ymm4,%ymm0 | |
261 | vpsrld $25,%ymm4,%ymm4 | |
262 | vpor %ymm0,%ymm4,%ymm4 | |
263 | ||
264 | dec %ecx | |
265 | jnz .Ldoubleround8 | |
266 | ||
267 | # x0..15[0-3] += s[0..15] | |
268 | vpbroadcastd 0x00(%rdi),%ymm0 | |
269 | vpaddd 0x00(%rsp),%ymm0,%ymm0 | |
270 | vmovdqa %ymm0,0x00(%rsp) | |
271 | vpbroadcastd 0x04(%rdi),%ymm0 | |
272 | vpaddd 0x20(%rsp),%ymm0,%ymm0 | |
273 | vmovdqa %ymm0,0x20(%rsp) | |
274 | vpbroadcastd 0x08(%rdi),%ymm0 | |
275 | vpaddd 0x40(%rsp),%ymm0,%ymm0 | |
276 | vmovdqa %ymm0,0x40(%rsp) | |
277 | vpbroadcastd 0x0c(%rdi),%ymm0 | |
278 | vpaddd 0x60(%rsp),%ymm0,%ymm0 | |
279 | vmovdqa %ymm0,0x60(%rsp) | |
280 | vpbroadcastd 0x10(%rdi),%ymm0 | |
281 | vpaddd %ymm0,%ymm4,%ymm4 | |
282 | vpbroadcastd 0x14(%rdi),%ymm0 | |
283 | vpaddd %ymm0,%ymm5,%ymm5 | |
284 | vpbroadcastd 0x18(%rdi),%ymm0 | |
285 | vpaddd %ymm0,%ymm6,%ymm6 | |
286 | vpbroadcastd 0x1c(%rdi),%ymm0 | |
287 | vpaddd %ymm0,%ymm7,%ymm7 | |
288 | vpbroadcastd 0x20(%rdi),%ymm0 | |
289 | vpaddd %ymm0,%ymm8,%ymm8 | |
290 | vpbroadcastd 0x24(%rdi),%ymm0 | |
291 | vpaddd %ymm0,%ymm9,%ymm9 | |
292 | vpbroadcastd 0x28(%rdi),%ymm0 | |
293 | vpaddd %ymm0,%ymm10,%ymm10 | |
294 | vpbroadcastd 0x2c(%rdi),%ymm0 | |
295 | vpaddd %ymm0,%ymm11,%ymm11 | |
296 | vpbroadcastd 0x30(%rdi),%ymm0 | |
297 | vpaddd %ymm0,%ymm12,%ymm12 | |
298 | vpbroadcastd 0x34(%rdi),%ymm0 | |
299 | vpaddd %ymm0,%ymm13,%ymm13 | |
300 | vpbroadcastd 0x38(%rdi),%ymm0 | |
301 | vpaddd %ymm0,%ymm14,%ymm14 | |
302 | vpbroadcastd 0x3c(%rdi),%ymm0 | |
303 | vpaddd %ymm0,%ymm15,%ymm15 | |
304 | ||
305 | # x12 += counter values 0-3 | |
306 | vpaddd %ymm1,%ymm12,%ymm12 | |
307 | ||
308 | # interleave 32-bit words in state n, n+1 | |
309 | vmovdqa 0x00(%rsp),%ymm0 | |
310 | vmovdqa 0x20(%rsp),%ymm1 | |
311 | vpunpckldq %ymm1,%ymm0,%ymm2 | |
312 | vpunpckhdq %ymm1,%ymm0,%ymm1 | |
313 | vmovdqa %ymm2,0x00(%rsp) | |
314 | vmovdqa %ymm1,0x20(%rsp) | |
315 | vmovdqa 0x40(%rsp),%ymm0 | |
316 | vmovdqa 0x60(%rsp),%ymm1 | |
317 | vpunpckldq %ymm1,%ymm0,%ymm2 | |
318 | vpunpckhdq %ymm1,%ymm0,%ymm1 | |
319 | vmovdqa %ymm2,0x40(%rsp) | |
320 | vmovdqa %ymm1,0x60(%rsp) | |
321 | vmovdqa %ymm4,%ymm0 | |
322 | vpunpckldq %ymm5,%ymm0,%ymm4 | |
323 | vpunpckhdq %ymm5,%ymm0,%ymm5 | |
324 | vmovdqa %ymm6,%ymm0 | |
325 | vpunpckldq %ymm7,%ymm0,%ymm6 | |
326 | vpunpckhdq %ymm7,%ymm0,%ymm7 | |
327 | vmovdqa %ymm8,%ymm0 | |
328 | vpunpckldq %ymm9,%ymm0,%ymm8 | |
329 | vpunpckhdq %ymm9,%ymm0,%ymm9 | |
330 | vmovdqa %ymm10,%ymm0 | |
331 | vpunpckldq %ymm11,%ymm0,%ymm10 | |
332 | vpunpckhdq %ymm11,%ymm0,%ymm11 | |
333 | vmovdqa %ymm12,%ymm0 | |
334 | vpunpckldq %ymm13,%ymm0,%ymm12 | |
335 | vpunpckhdq %ymm13,%ymm0,%ymm13 | |
336 | vmovdqa %ymm14,%ymm0 | |
337 | vpunpckldq %ymm15,%ymm0,%ymm14 | |
338 | vpunpckhdq %ymm15,%ymm0,%ymm15 | |
339 | ||
340 | # interleave 64-bit words in state n, n+2 | |
341 | vmovdqa 0x00(%rsp),%ymm0 | |
342 | vmovdqa 0x40(%rsp),%ymm2 | |
343 | vpunpcklqdq %ymm2,%ymm0,%ymm1 | |
344 | vpunpckhqdq %ymm2,%ymm0,%ymm2 | |
345 | vmovdqa %ymm1,0x00(%rsp) | |
346 | vmovdqa %ymm2,0x40(%rsp) | |
347 | vmovdqa 0x20(%rsp),%ymm0 | |
348 | vmovdqa 0x60(%rsp),%ymm2 | |
349 | vpunpcklqdq %ymm2,%ymm0,%ymm1 | |
350 | vpunpckhqdq %ymm2,%ymm0,%ymm2 | |
351 | vmovdqa %ymm1,0x20(%rsp) | |
352 | vmovdqa %ymm2,0x60(%rsp) | |
353 | vmovdqa %ymm4,%ymm0 | |
354 | vpunpcklqdq %ymm6,%ymm0,%ymm4 | |
355 | vpunpckhqdq %ymm6,%ymm0,%ymm6 | |
356 | vmovdqa %ymm5,%ymm0 | |
357 | vpunpcklqdq %ymm7,%ymm0,%ymm5 | |
358 | vpunpckhqdq %ymm7,%ymm0,%ymm7 | |
359 | vmovdqa %ymm8,%ymm0 | |
360 | vpunpcklqdq %ymm10,%ymm0,%ymm8 | |
361 | vpunpckhqdq %ymm10,%ymm0,%ymm10 | |
362 | vmovdqa %ymm9,%ymm0 | |
363 | vpunpcklqdq %ymm11,%ymm0,%ymm9 | |
364 | vpunpckhqdq %ymm11,%ymm0,%ymm11 | |
365 | vmovdqa %ymm12,%ymm0 | |
366 | vpunpcklqdq %ymm14,%ymm0,%ymm12 | |
367 | vpunpckhqdq %ymm14,%ymm0,%ymm14 | |
368 | vmovdqa %ymm13,%ymm0 | |
369 | vpunpcklqdq %ymm15,%ymm0,%ymm13 | |
370 | vpunpckhqdq %ymm15,%ymm0,%ymm15 | |
371 | ||
372 | # interleave 128-bit words in state n, n+4 | |
373 | vmovdqa 0x00(%rsp),%ymm0 | |
374 | vperm2i128 $0x20,%ymm4,%ymm0,%ymm1 | |
375 | vperm2i128 $0x31,%ymm4,%ymm0,%ymm4 | |
376 | vmovdqa %ymm1,0x00(%rsp) | |
377 | vmovdqa 0x20(%rsp),%ymm0 | |
378 | vperm2i128 $0x20,%ymm5,%ymm0,%ymm1 | |
379 | vperm2i128 $0x31,%ymm5,%ymm0,%ymm5 | |
380 | vmovdqa %ymm1,0x20(%rsp) | |
381 | vmovdqa 0x40(%rsp),%ymm0 | |
382 | vperm2i128 $0x20,%ymm6,%ymm0,%ymm1 | |
383 | vperm2i128 $0x31,%ymm6,%ymm0,%ymm6 | |
384 | vmovdqa %ymm1,0x40(%rsp) | |
385 | vmovdqa 0x60(%rsp),%ymm0 | |
386 | vperm2i128 $0x20,%ymm7,%ymm0,%ymm1 | |
387 | vperm2i128 $0x31,%ymm7,%ymm0,%ymm7 | |
388 | vmovdqa %ymm1,0x60(%rsp) | |
389 | vperm2i128 $0x20,%ymm12,%ymm8,%ymm0 | |
390 | vperm2i128 $0x31,%ymm12,%ymm8,%ymm12 | |
391 | vmovdqa %ymm0,%ymm8 | |
392 | vperm2i128 $0x20,%ymm13,%ymm9,%ymm0 | |
393 | vperm2i128 $0x31,%ymm13,%ymm9,%ymm13 | |
394 | vmovdqa %ymm0,%ymm9 | |
395 | vperm2i128 $0x20,%ymm14,%ymm10,%ymm0 | |
396 | vperm2i128 $0x31,%ymm14,%ymm10,%ymm14 | |
397 | vmovdqa %ymm0,%ymm10 | |
398 | vperm2i128 $0x20,%ymm15,%ymm11,%ymm0 | |
399 | vperm2i128 $0x31,%ymm15,%ymm11,%ymm15 | |
400 | vmovdqa %ymm0,%ymm11 | |
401 | ||
402 | # xor with corresponding input, write to output | |
403 | vmovdqa 0x00(%rsp),%ymm0 | |
404 | vpxor 0x0000(%rdx),%ymm0,%ymm0 | |
405 | vmovdqu %ymm0,0x0000(%rsi) | |
406 | vmovdqa 0x20(%rsp),%ymm0 | |
407 | vpxor 0x0080(%rdx),%ymm0,%ymm0 | |
408 | vmovdqu %ymm0,0x0080(%rsi) | |
409 | vmovdqa 0x40(%rsp),%ymm0 | |
410 | vpxor 0x0040(%rdx),%ymm0,%ymm0 | |
411 | vmovdqu %ymm0,0x0040(%rsi) | |
412 | vmovdqa 0x60(%rsp),%ymm0 | |
413 | vpxor 0x00c0(%rdx),%ymm0,%ymm0 | |
414 | vmovdqu %ymm0,0x00c0(%rsi) | |
415 | vpxor 0x0100(%rdx),%ymm4,%ymm4 | |
416 | vmovdqu %ymm4,0x0100(%rsi) | |
417 | vpxor 0x0180(%rdx),%ymm5,%ymm5 | |
418 | vmovdqu %ymm5,0x00180(%rsi) | |
419 | vpxor 0x0140(%rdx),%ymm6,%ymm6 | |
420 | vmovdqu %ymm6,0x0140(%rsi) | |
421 | vpxor 0x01c0(%rdx),%ymm7,%ymm7 | |
422 | vmovdqu %ymm7,0x01c0(%rsi) | |
423 | vpxor 0x0020(%rdx),%ymm8,%ymm8 | |
424 | vmovdqu %ymm8,0x0020(%rsi) | |
425 | vpxor 0x00a0(%rdx),%ymm9,%ymm9 | |
426 | vmovdqu %ymm9,0x00a0(%rsi) | |
427 | vpxor 0x0060(%rdx),%ymm10,%ymm10 | |
428 | vmovdqu %ymm10,0x0060(%rsi) | |
429 | vpxor 0x00e0(%rdx),%ymm11,%ymm11 | |
430 | vmovdqu %ymm11,0x00e0(%rsi) | |
431 | vpxor 0x0120(%rdx),%ymm12,%ymm12 | |
432 | vmovdqu %ymm12,0x0120(%rsi) | |
433 | vpxor 0x01a0(%rdx),%ymm13,%ymm13 | |
434 | vmovdqu %ymm13,0x01a0(%rsi) | |
435 | vpxor 0x0160(%rdx),%ymm14,%ymm14 | |
436 | vmovdqu %ymm14,0x0160(%rsi) | |
437 | vpxor 0x01e0(%rdx),%ymm15,%ymm15 | |
438 | vmovdqu %ymm15,0x01e0(%rsi) | |
439 | ||
440 | vzeroupper | |
441 | mov %r8,%rsp | |
442 | ret | |
443 | ENDPROC(chacha20_8block_xor_avx2) |