1 /* SPDX-License-Identifier: GPL-2.0-or-later *
2 /*
3 * Serpent Cipher 4-way parallel algorithm (i5
4 *
5 * Copyright (C) 2011 Jussi Kivilinna <jussi.ki
6 *
7 * Based on crypto/serpent.c by
8 * Copyright (C) 2002 Dag Arne Osvik <osvik@ii
9 * 2003 Herbert Valerio Riedel <
10 */
11
12 #include <linux/linkage.h>
13
14 .file "serpent-sse2-i586-asm_32.S"
15 .text
16
17 #define arg_ctx 4
18 #define arg_dst 8
19 #define arg_src 12
20 #define arg_xor 16
21
22 /*********************************************
23 4-way SSE2 serpent
24 *********************************************
25 #define CTX %edx
26
27 #define RA %xmm0
28 #define RB %xmm1
29 #define RC %xmm2
30 #define RD %xmm3
31 #define RE %xmm4
32
33 #define RT0 %xmm5
34 #define RT1 %xmm6
35
36 #define RNOT %xmm7
37
38 #define get_key(i, j, t) \
39 movd (4*(i)+(j))*4(CTX), t; \
40 pshufd $0, t, t;
41
42 #define K(x0, x1, x2, x3, x4, i) \
43 get_key(i, 0, x4); \
44 get_key(i, 1, RT0); \
45 get_key(i, 2, RT1); \
46 pxor x4, x0; \
47 pxor RT0, x1; \
48 pxor RT1, x2; \
49 get_key(i, 3, x4); \
50 pxor x4, x3;
51
52 #define LK(x0, x1, x2, x3, x4, i) \
53 movdqa x0, x4; \
54 pslld $13, x0; \
55 psrld $(32 - 13), x4; \
56 por x4, x0; \
57 pxor x0, x1; \
58 movdqa x2, x4; \
59 pslld $3, x2; \
60 psrld $(32 - 3), x4; \
61 por x4, x2; \
62 pxor x2, x1; \
63 movdqa x1, x4; \
64 pslld $1, x1; \
65 psrld $(32 - 1), x4; \
66 por x4, x1; \
67 movdqa x0, x4; \
68 pslld $3, x4; \
69 pxor x2, x3; \
70 pxor x4, x3; \
71 movdqa x3, x4; \
72 pslld $7, x3; \
73 psrld $(32 - 7), x4; \
74 por x4, x3; \
75 movdqa x1, x4; \
76 pslld $7, x4; \
77 pxor x1, x0; \
78 pxor x3, x0; \
79 pxor x3, x2; \
80 pxor x4, x2; \
81 movdqa x0, x4; \
82 get_key(i, 1, RT0); \
83 pxor RT0, x1; \
84 get_key(i, 3, RT0); \
85 pxor RT0, x3; \
86 pslld $5, x0; \
87 psrld $(32 - 5), x4; \
88 por x4, x0; \
89 movdqa x2, x4; \
90 pslld $22, x2; \
91 psrld $(32 - 22), x4; \
92 por x4, x2; \
93 get_key(i, 0, RT0); \
94 pxor RT0, x0; \
95 get_key(i, 2, RT0); \
96 pxor RT0, x2;
97
98 #define KL(x0, x1, x2, x3, x4, i) \
99 K(x0, x1, x2, x3, x4, i); \
100 movdqa x0, x4; \
101 psrld $5, x0; \
102 pslld $(32 - 5), x4; \
103 por x4, x0; \
104 movdqa x2, x4; \
105 psrld $22, x2; \
106 pslld $(32 - 22), x4; \
107 por x4, x2; \
108 pxor x3, x2; \
109 pxor x3, x0; \
110 movdqa x1, x4; \
111 pslld $7, x4; \
112 pxor x1, x0; \
113 pxor x4, x2; \
114 movdqa x1, x4; \
115 psrld $1, x1; \
116 pslld $(32 - 1), x4; \
117 por x4, x1; \
118 movdqa x3, x4; \
119 psrld $7, x3; \
120 pslld $(32 - 7), x4; \
121 por x4, x3; \
122 pxor x0, x1; \
123 movdqa x0, x4; \
124 pslld $3, x4; \
125 pxor x4, x3; \
126 movdqa x0, x4; \
127 psrld $13, x0; \
128 pslld $(32 - 13), x4; \
129 por x4, x0; \
130 pxor x2, x1; \
131 pxor x2, x3; \
132 movdqa x2, x4; \
133 psrld $3, x2; \
134 pslld $(32 - 3), x4; \
135 por x4, x2;
136
137 #define S0(x0, x1, x2, x3, x4) \
138 movdqa x3, x4; \
139 por x0, x3; \
140 pxor x4, x0; \
141 pxor x2, x4; \
142 pxor RNOT, x4; \
143 pxor x1, x3; \
144 pand x0, x1; \
145 pxor x4, x1; \
146 pxor x0, x2; \
147 pxor x3, x0; \
148 por x0, x4; \
149 pxor x2, x0; \
150 pand x1, x2; \
151 pxor x2, x3; \
152 pxor RNOT, x1; \
153 pxor x4, x2; \
154 pxor x2, x1;
155
156 #define S1(x0, x1, x2, x3, x4) \
157 movdqa x1, x4; \
158 pxor x0, x1; \
159 pxor x3, x0; \
160 pxor RNOT, x3; \
161 pand x1, x4; \
162 por x1, x0; \
163 pxor x2, x3; \
164 pxor x3, x0; \
165 pxor x3, x1; \
166 pxor x4, x3; \
167 por x4, x1; \
168 pxor x2, x4; \
169 pand x0, x2; \
170 pxor x1, x2; \
171 por x0, x1; \
172 pxor RNOT, x0; \
173 pxor x2, x0; \
174 pxor x1, x4;
175
176 #define S2(x0, x1, x2, x3, x4) \
177 pxor RNOT, x3; \
178 pxor x0, x1; \
179 movdqa x0, x4; \
180 pand x2, x0; \
181 pxor x3, x0; \
182 por x4, x3; \
183 pxor x1, x2; \
184 pxor x1, x3; \
185 pand x0, x1; \
186 pxor x2, x0; \
187 pand x3, x2; \
188 por x1, x3; \
189 pxor RNOT, x0; \
190 pxor x0, x3; \
191 pxor x0, x4; \
192 pxor x2, x0; \
193 por x2, x1;
194
195 #define S3(x0, x1, x2, x3, x4) \
196 movdqa x1, x4; \
197 pxor x3, x1; \
198 por x0, x3; \
199 pand x0, x4; \
200 pxor x2, x0; \
201 pxor x1, x2; \
202 pand x3, x1; \
203 pxor x3, x2; \
204 por x4, x0; \
205 pxor x3, x4; \
206 pxor x0, x1; \
207 pand x3, x0; \
208 pand x4, x3; \
209 pxor x2, x3; \
210 por x1, x4; \
211 pand x1, x2; \
212 pxor x3, x4; \
213 pxor x3, x0; \
214 pxor x2, x3;
215
216 #define S4(x0, x1, x2, x3, x4) \
217 movdqa x3, x4; \
218 pand x0, x3; \
219 pxor x4, x0; \
220 pxor x2, x3; \
221 por x4, x2; \
222 pxor x1, x0; \
223 pxor x3, x4; \
224 por x0, x2; \
225 pxor x1, x2; \
226 pand x0, x1; \
227 pxor x4, x1; \
228 pand x2, x4; \
229 pxor x3, x2; \
230 pxor x0, x4; \
231 por x1, x3; \
232 pxor RNOT, x1; \
233 pxor x0, x3;
234
235 #define S5(x0, x1, x2, x3, x4) \
236 movdqa x1, x4; \
237 por x0, x1; \
238 pxor x1, x2; \
239 pxor RNOT, x3; \
240 pxor x0, x4; \
241 pxor x2, x0; \
242 pand x4, x1; \
243 por x3, x4; \
244 pxor x0, x4; \
245 pand x3, x0; \
246 pxor x3, x1; \
247 pxor x2, x3; \
248 pxor x1, x0; \
249 pand x4, x2; \
250 pxor x2, x1; \
251 pand x0, x2; \
252 pxor x2, x3;
253
254 #define S6(x0, x1, x2, x3, x4) \
255 movdqa x1, x4; \
256 pxor x0, x3; \
257 pxor x2, x1; \
258 pxor x0, x2; \
259 pand x3, x0; \
260 por x3, x1; \
261 pxor RNOT, x4; \
262 pxor x1, x0; \
263 pxor x2, x1; \
264 pxor x4, x3; \
265 pxor x0, x4; \
266 pand x0, x2; \
267 pxor x1, x4; \
268 pxor x3, x2; \
269 pand x1, x3; \
270 pxor x0, x3; \
271 pxor x2, x1;
272
273 #define S7(x0, x1, x2, x3, x4) \
274 pxor RNOT, x1; \
275 movdqa x1, x4; \
276 pxor RNOT, x0; \
277 pand x2, x1; \
278 pxor x3, x1; \
279 por x4, x3; \
280 pxor x2, x4; \
281 pxor x3, x2; \
282 pxor x0, x3; \
283 por x1, x0; \
284 pand x0, x2; \
285 pxor x4, x0; \
286 pxor x3, x4; \
287 pand x0, x3; \
288 pxor x1, x4; \
289 pxor x4, x2; \
290 pxor x1, x3; \
291 por x0, x4; \
292 pxor x1, x4;
293
294 #define SI0(x0, x1, x2, x3, x4) \
295 movdqa x3, x4; \
296 pxor x0, x1; \
297 por x1, x3; \
298 pxor x1, x4; \
299 pxor RNOT, x0; \
300 pxor x3, x2; \
301 pxor x0, x3; \
302 pand x1, x0; \
303 pxor x2, x0; \
304 pand x3, x2; \
305 pxor x4, x3; \
306 pxor x3, x2; \
307 pxor x3, x1; \
308 pand x0, x3; \
309 pxor x0, x1; \
310 pxor x2, x0; \
311 pxor x3, x4;
312
313 #define SI1(x0, x1, x2, x3, x4) \
314 pxor x3, x1; \
315 movdqa x0, x4; \
316 pxor x2, x0; \
317 pxor RNOT, x2; \
318 por x1, x4; \
319 pxor x3, x4; \
320 pand x1, x3; \
321 pxor x2, x1; \
322 pand x4, x2; \
323 pxor x1, x4; \
324 por x3, x1; \
325 pxor x0, x3; \
326 pxor x0, x2; \
327 por x4, x0; \
328 pxor x4, x2; \
329 pxor x0, x1; \
330 pxor x1, x4;
331
332 #define SI2(x0, x1, x2, x3, x4) \
333 pxor x1, x2; \
334 movdqa x3, x4; \
335 pxor RNOT, x3; \
336 por x2, x3; \
337 pxor x4, x2; \
338 pxor x0, x4; \
339 pxor x1, x3; \
340 por x2, x1; \
341 pxor x0, x2; \
342 pxor x4, x1; \
343 por x3, x4; \
344 pxor x3, x2; \
345 pxor x2, x4; \
346 pand x1, x2; \
347 pxor x3, x2; \
348 pxor x4, x3; \
349 pxor x0, x4;
350
351 #define SI3(x0, x1, x2, x3, x4) \
352 pxor x1, x2; \
353 movdqa x1, x4; \
354 pand x2, x1; \
355 pxor x0, x1; \
356 por x4, x0; \
357 pxor x3, x4; \
358 pxor x3, x0; \
359 por x1, x3; \
360 pxor x2, x1; \
361 pxor x3, x1; \
362 pxor x2, x0; \
363 pxor x3, x2; \
364 pand x1, x3; \
365 pxor x0, x1; \
366 pand x2, x0; \
367 pxor x3, x4; \
368 pxor x0, x3; \
369 pxor x1, x0;
370
371 #define SI4(x0, x1, x2, x3, x4) \
372 pxor x3, x2; \
373 movdqa x0, x4; \
374 pand x1, x0; \
375 pxor x2, x0; \
376 por x3, x2; \
377 pxor RNOT, x4; \
378 pxor x0, x1; \
379 pxor x2, x0; \
380 pand x4, x2; \
381 pxor x0, x2; \
382 por x4, x0; \
383 pxor x3, x0; \
384 pand x2, x3; \
385 pxor x3, x4; \
386 pxor x1, x3; \
387 pand x0, x1; \
388 pxor x1, x4; \
389 pxor x3, x0;
390
391 #define SI5(x0, x1, x2, x3, x4) \
392 movdqa x1, x4; \
393 por x2, x1; \
394 pxor x4, x2; \
395 pxor x3, x1; \
396 pand x4, x3; \
397 pxor x3, x2; \
398 por x0, x3; \
399 pxor RNOT, x0; \
400 pxor x2, x3; \
401 por x0, x2; \
402 pxor x1, x4; \
403 pxor x4, x2; \
404 pand x0, x4; \
405 pxor x1, x0; \
406 pxor x3, x1; \
407 pand x2, x0; \
408 pxor x3, x2; \
409 pxor x2, x0; \
410 pxor x4, x2; \
411 pxor x3, x4;
412
413 #define SI6(x0, x1, x2, x3, x4) \
414 pxor x2, x0; \
415 movdqa x0, x4; \
416 pand x3, x0; \
417 pxor x3, x2; \
418 pxor x2, x0; \
419 pxor x1, x3; \
420 por x4, x2; \
421 pxor x3, x2; \
422 pand x0, x3; \
423 pxor RNOT, x0; \
424 pxor x1, x3; \
425 pand x2, x1; \
426 pxor x0, x4; \
427 pxor x4, x3; \
428 pxor x2, x4; \
429 pxor x1, x0; \
430 pxor x0, x2;
431
432 #define SI7(x0, x1, x2, x3, x4) \
433 movdqa x3, x4; \
434 pand x0, x3; \
435 pxor x2, x0; \
436 por x4, x2; \
437 pxor x1, x4; \
438 pxor RNOT, x0; \
439 por x3, x1; \
440 pxor x0, x4; \
441 pand x2, x0; \
442 pxor x1, x0; \
443 pand x2, x1; \
444 pxor x2, x3; \
445 pxor x3, x4; \
446 pand x3, x2; \
447 por x0, x3; \
448 pxor x4, x1; \
449 pxor x4, x3; \
450 pand x0, x4; \
451 pxor x2, x4;
452
453 #define transpose_4x4(x0, x1, x2, x3, t0, t1,
454 movdqa x0, t2; \
455 punpckldq x1, x0; \
456 punpckhdq x1, t2; \
457 movdqa x2, t1; \
458 punpckhdq x3, x2; \
459 punpckldq x3, t1; \
460 movdqa x0, x1; \
461 punpcklqdq t1, x0; \
462 punpckhqdq t1, x1; \
463 movdqa t2, x3; \
464 punpcklqdq x2, t2; \
465 punpckhqdq x2, x3; \
466 movdqa t2, x2;
467
468 #define read_blocks(in, x0, x1, x2, x3, t0, t1
469 movdqu (0*4*4)(in), x0; \
470 movdqu (1*4*4)(in), x1; \
471 movdqu (2*4*4)(in), x2; \
472 movdqu (3*4*4)(in), x3; \
473 \
474 transpose_4x4(x0, x1, x2, x3, t0, t1,
475
476 #define write_blocks(out, x0, x1, x2, x3, t0,
477 transpose_4x4(x0, x1, x2, x3, t0, t1,
478 \
479 movdqu x0, (0*4*4)(out); \
480 movdqu x1, (1*4*4)(out); \
481 movdqu x2, (2*4*4)(out); \
482 movdqu x3, (3*4*4)(out);
483
484 #define xor_blocks(out, x0, x1, x2, x3, t0, t1
485 transpose_4x4(x0, x1, x2, x3, t0, t1,
486 \
487 movdqu (0*4*4)(out), t0; \
488 pxor t0, x0; \
489 movdqu x0, (0*4*4)(out);
490 movdqu (1*4*4)(out), t0; \
491 pxor t0, x1; \
492 movdqu x1, (1*4*4)(out);
493 movdqu (2*4*4)(out), t0; \
494 pxor t0, x2; \
495 movdqu x2, (2*4*4)(out);
496 movdqu (3*4*4)(out), t0; \
497 pxor t0, x3; \
498 movdqu x3, (3*4*4)(out);
499
500 SYM_FUNC_START(__serpent_enc_blk_4way)
501 /* input:
502 * arg_ctx(%esp): ctx, CTX
503 * arg_dst(%esp): dst
504 * arg_src(%esp): src
505 * arg_xor(%esp): bool, if true:
506 */
507
508 pcmpeqd RNOT, RNOT;
509
510 movl arg_ctx(%esp), CTX;
511
512 movl arg_src(%esp), %eax;
513 read_blocks(%eax, RA, RB, RC, RD, RT0,
514
515 K(RA,
516 S0(RA, RB, RC, RD, RE); LK(RC,
517 S1(RC, RB, RD, RA, RE); LK(RE,
518 S2(RE, RD, RA, RC, RB); LK(RB,
519 S3(RB, RD, RE, RC, RA); LK(RC,
520 S4(RC, RA, RD, RB, RE); LK(RA,
521 S5(RA, RD, RB, RE, RC); LK(RC,
522 S6(RC, RA, RD, RE, RB); LK(RD,
523 S7(RD, RB, RA, RE, RC); LK(RC,
524 S0(RC, RA, RE, RD, RB); LK(RE,
525 S1(RE, RA, RD, RC, RB); LK(RB,
526 S2(RB, RD, RC, RE, RA); LK(RA,
527 S3(RA, RD, RB, RE, RC); LK(RE,
528 S4(RE, RC, RD, RA, RB); LK(RC,
529 S5(RC, RD, RA, RB, RE); LK(RE,
530 S6(RE, RC, RD, RB, RA); LK(RD,
531 S7(RD, RA, RC, RB, RE); LK(RE,
532 S0(RE, RC, RB, RD, RA); LK(RB,
533 S1(RB, RC, RD, RE, RA); LK(RA,
534 S2(RA, RD, RE, RB, RC); LK(RC,
535 S3(RC, RD, RA, RB, RE); LK(RB,
536 S4(RB, RE, RD, RC, RA); LK(RE,
537 S5(RE, RD, RC, RA, RB); LK(RB,
538 S6(RB, RE, RD, RA, RC); LK(RD,
539 S7(RD, RC, RE, RA, RB); LK(RB,
540 S0(RB, RE, RA, RD, RC); LK(RA,
541 S1(RA, RE, RD, RB, RC); LK(RC,
542 S2(RC, RD, RB, RA, RE); LK(RE,
543 S3(RE, RD, RC, RA, RB); LK(RA,
544 S4(RA, RB, RD, RE, RC); LK(RB,
545 S5(RB, RD, RE, RC, RA); LK(RA,
546 S6(RA, RB, RD, RC, RE); LK(RD,
547 S7(RD, RE, RB, RC, RA); K(RA,
548
549 movl arg_dst(%esp), %eax;
550
551 cmpb $0, arg_xor(%esp);
552 jnz .L__enc_xor4;
553
554 write_blocks(%eax, RA, RB, RC, RD, RT0
555
556 RET;
557
558 .L__enc_xor4:
559 xor_blocks(%eax, RA, RB, RC, RD, RT0,
560
561 RET;
562 SYM_FUNC_END(__serpent_enc_blk_4way)
563
564 SYM_FUNC_START(serpent_dec_blk_4way)
565 /* input:
566 * arg_ctx(%esp): ctx, CTX
567 * arg_dst(%esp): dst
568 * arg_src(%esp): src
569 */
570
571 pcmpeqd RNOT, RNOT;
572
573 movl arg_ctx(%esp), CTX;
574
575 movl arg_src(%esp), %eax;
576 read_blocks(%eax, RA, RB, RC, RD, RT0,
577
578 K(RA,
579 SI7(RA, RB, RC, RD, RE); KL(RB,
580 SI6(RB, RD, RA, RE, RC); KL(RA,
581 SI5(RA, RC, RE, RB, RD); KL(RC,
582 SI4(RC, RD, RA, RE, RB); KL(RC,
583 SI3(RC, RA, RB, RE, RD); KL(RB,
584 SI2(RB, RC, RD, RE, RA); KL(RC,
585 SI1(RC, RA, RE, RD, RB); KL(RB,
586 SI0(RB, RA, RE, RD, RC); KL(RE,
587 SI7(RE, RC, RA, RB, RD); KL(RC,
588 SI6(RC, RB, RE, RD, RA); KL(RE,
589 SI5(RE, RA, RD, RC, RB); KL(RA,
590 SI4(RA, RB, RE, RD, RC); KL(RA,
591 SI3(RA, RE, RC, RD, RB); KL(RC,
592 SI2(RC, RA, RB, RD, RE); KL(RA,
593 SI1(RA, RE, RD, RB, RC); KL(RC,
594 SI0(RC, RE, RD, RB, RA); KL(RD,
595 SI7(RD, RA, RE, RC, RB); KL(RA,
596 SI6(RA, RC, RD, RB, RE); KL(RD,
597 SI5(RD, RE, RB, RA, RC); KL(RE,
598 SI4(RE, RC, RD, RB, RA); KL(RE,
599 SI3(RE, RD, RA, RB, RC); KL(RA,
600 SI2(RA, RE, RC, RB, RD); KL(RE,
601 SI1(RE, RD, RB, RC, RA); KL(RA,
602 SI0(RA, RD, RB, RC, RE); KL(RB,
603 SI7(RB, RE, RD, RA, RC); KL(RE,
604 SI6(RE, RA, RB, RC, RD); KL(RB,
605 SI5(RB, RD, RC, RE, RA); KL(RD,
606 SI4(RD, RA, RB, RC, RE); KL(RD,
607 SI3(RD, RB, RE, RC, RA); KL(RE,
608 SI2(RE, RD, RA, RC, RB); KL(RD,
609 SI1(RD, RB, RC, RA, RE); KL(RE,
610 SI0(RE, RB, RC, RA, RD); K(RC,
611
612 movl arg_dst(%esp), %eax;
613 write_blocks(%eax, RC, RD, RB, RE, RT0
614
615 RET;
616 SYM_FUNC_END(serpent_dec_blk_4way)
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