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Merge tag 'mmc-v4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[mirror_ubuntu-zesty-kernel.git] / arch / x86 / crypto / sha256-avx2-asm.S
1 ########################################################################
2 # Implement fast SHA-256 with AVX2 instructions. (x86_64)
3 #
4 # Copyright (C) 2013 Intel Corporation.
5 #
6 # Authors:
7 # James Guilford <james.guilford@intel.com>
8 # Kirk Yap <kirk.s.yap@intel.com>
9 # Tim Chen <tim.c.chen@linux.intel.com>
10 #
11 # This software is available to you under a choice of one of two
12 # licenses. You may choose to be licensed under the terms of the GNU
13 # General Public License (GPL) Version 2, available from the file
14 # COPYING in the main directory of this source tree, or the
15 # OpenIB.org BSD license below:
16 #
17 # Redistribution and use in source and binary forms, with or
18 # without modification, are permitted provided that the following
19 # conditions are met:
20 #
21 # - Redistributions of source code must retain the above
22 # copyright notice, this list of conditions and the following
23 # disclaimer.
24 #
25 # - Redistributions in binary form must reproduce the above
26 # copyright notice, this list of conditions and the following
27 # disclaimer in the documentation and/or other materials
28 # provided with the distribution.
29 #
30 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
31 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
32 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
33 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
34 # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
35 # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
36 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 # SOFTWARE.
38 #
39 ########################################################################
40 #
41 # This code is described in an Intel White-Paper:
42 # "Fast SHA-256 Implementations on Intel Architecture Processors"
43 #
44 # To find it, surf to http://www.intel.com/p/en_US/embedded
45 # and search for that title.
46 #
47 ########################################################################
48 # This code schedules 2 blocks at a time, with 4 lanes per block
49 ########################################################################
50
51 #ifdef CONFIG_AS_AVX2
52 #include <linux/linkage.h>
53
54 ## assume buffers not aligned
55 #define VMOVDQ vmovdqu
56
57 ################################ Define Macros
58
59 # addm [mem], reg
60 # Add reg to mem using reg-mem add and store
61 .macro addm p1 p2
62 add \p1, \p2
63 mov \p2, \p1
64 .endm
65
66 ################################
67
68 X0 = %ymm4
69 X1 = %ymm5
70 X2 = %ymm6
71 X3 = %ymm7
72
73 # XMM versions of above
74 XWORD0 = %xmm4
75 XWORD1 = %xmm5
76 XWORD2 = %xmm6
77 XWORD3 = %xmm7
78
79 XTMP0 = %ymm0
80 XTMP1 = %ymm1
81 XTMP2 = %ymm2
82 XTMP3 = %ymm3
83 XTMP4 = %ymm8
84 XFER = %ymm9
85 XTMP5 = %ymm11
86
87 SHUF_00BA = %ymm10 # shuffle xBxA -> 00BA
88 SHUF_DC00 = %ymm12 # shuffle xDxC -> DC00
89 BYTE_FLIP_MASK = %ymm13
90
91 X_BYTE_FLIP_MASK = %xmm13 # XMM version of BYTE_FLIP_MASK
92
93 NUM_BLKS = %rdx # 3rd arg
94 INP = %rsi # 2nd arg
95 CTX = %rdi # 1st arg
96 c = %ecx
97 d = %r8d
98 e = %edx # clobbers NUM_BLKS
99 y3 = %esi # clobbers INP
100
101
102 TBL = %rbp
103 SRND = CTX # SRND is same register as CTX
104
105 a = %eax
106 b = %ebx
107 f = %r9d
108 g = %r10d
109 h = %r11d
110 old_h = %r11d
111
112 T1 = %r12d
113 y0 = %r13d
114 y1 = %r14d
115 y2 = %r15d
116
117
118 _XFER_SIZE = 2*64*4 # 2 blocks, 64 rounds, 4 bytes/round
119 _XMM_SAVE_SIZE = 0
120 _INP_END_SIZE = 8
121 _INP_SIZE = 8
122 _CTX_SIZE = 8
123 _RSP_SIZE = 8
124
125 _XFER = 0
126 _XMM_SAVE = _XFER + _XFER_SIZE
127 _INP_END = _XMM_SAVE + _XMM_SAVE_SIZE
128 _INP = _INP_END + _INP_END_SIZE
129 _CTX = _INP + _INP_SIZE
130 _RSP = _CTX + _CTX_SIZE
131 STACK_SIZE = _RSP + _RSP_SIZE
132
133 # rotate_Xs
134 # Rotate values of symbols X0...X3
135 .macro rotate_Xs
136 X_ = X0
137 X0 = X1
138 X1 = X2
139 X2 = X3
140 X3 = X_
141 .endm
142
143 # ROTATE_ARGS
144 # Rotate values of symbols a...h
145 .macro ROTATE_ARGS
146 old_h = h
147 TMP_ = h
148 h = g
149 g = f
150 f = e
151 e = d
152 d = c
153 c = b
154 b = a
155 a = TMP_
156 .endm
157
158 .macro FOUR_ROUNDS_AND_SCHED disp
159 ################################### RND N + 0 ############################
160
161 mov a, y3 # y3 = a # MAJA
162 rorx $25, e, y0 # y0 = e >> 25 # S1A
163 rorx $11, e, y1 # y1 = e >> 11 # S1B
164
165 addl \disp(%rsp, SRND), h # h = k + w + h # --
166 or c, y3 # y3 = a|c # MAJA
167 vpalignr $4, X2, X3, XTMP0 # XTMP0 = W[-7]
168 mov f, y2 # y2 = f # CH
169 rorx $13, a, T1 # T1 = a >> 13 # S0B
170
171 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
172 xor g, y2 # y2 = f^g # CH
173 vpaddd X0, XTMP0, XTMP0 # XTMP0 = W[-7] + W[-16]# y1 = (e >> 6)# S1
174 rorx $6, e, y1 # y1 = (e >> 6) # S1
175
176 and e, y2 # y2 = (f^g)&e # CH
177 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
178 rorx $22, a, y1 # y1 = a >> 22 # S0A
179 add h, d # d = k + w + h + d # --
180
181 and b, y3 # y3 = (a|c)&b # MAJA
182 vpalignr $4, X0, X1, XTMP1 # XTMP1 = W[-15]
183 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
184 rorx $2, a, T1 # T1 = (a >> 2) # S0
185
186 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
187 vpsrld $7, XTMP1, XTMP2
188 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
189 mov a, T1 # T1 = a # MAJB
190 and c, T1 # T1 = a&c # MAJB
191
192 add y0, y2 # y2 = S1 + CH # --
193 vpslld $(32-7), XTMP1, XTMP3
194 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
195 add y1, h # h = k + w + h + S0 # --
196
197 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
198 vpor XTMP2, XTMP3, XTMP3 # XTMP3 = W[-15] ror 7
199
200 vpsrld $18, XTMP1, XTMP2
201 add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
202 add y3, h # h = t1 + S0 + MAJ # --
203
204
205 ROTATE_ARGS
206
207 ################################### RND N + 1 ############################
208
209 mov a, y3 # y3 = a # MAJA
210 rorx $25, e, y0 # y0 = e >> 25 # S1A
211 rorx $11, e, y1 # y1 = e >> 11 # S1B
212 offset = \disp + 1*4
213 addl offset(%rsp, SRND), h # h = k + w + h # --
214 or c, y3 # y3 = a|c # MAJA
215
216
217 vpsrld $3, XTMP1, XTMP4 # XTMP4 = W[-15] >> 3
218 mov f, y2 # y2 = f # CH
219 rorx $13, a, T1 # T1 = a >> 13 # S0B
220 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
221 xor g, y2 # y2 = f^g # CH
222
223
224 rorx $6, e, y1 # y1 = (e >> 6) # S1
225 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
226 rorx $22, a, y1 # y1 = a >> 22 # S0A
227 and e, y2 # y2 = (f^g)&e # CH
228 add h, d # d = k + w + h + d # --
229
230 vpslld $(32-18), XTMP1, XTMP1
231 and b, y3 # y3 = (a|c)&b # MAJA
232 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
233
234 vpxor XTMP1, XTMP3, XTMP3
235 rorx $2, a, T1 # T1 = (a >> 2) # S0
236 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
237
238 vpxor XTMP2, XTMP3, XTMP3 # XTMP3 = W[-15] ror 7 ^ W[-15] ror 18
239 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
240 mov a, T1 # T1 = a # MAJB
241 and c, T1 # T1 = a&c # MAJB
242 add y0, y2 # y2 = S1 + CH # --
243
244 vpxor XTMP4, XTMP3, XTMP1 # XTMP1 = s0
245 vpshufd $0b11111010, X3, XTMP2 # XTMP2 = W[-2] {BBAA}
246 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
247 add y1, h # h = k + w + h + S0 # --
248
249 vpaddd XTMP1, XTMP0, XTMP0 # XTMP0 = W[-16] + W[-7] + s0
250 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
251 add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
252 add y3, h # h = t1 + S0 + MAJ # --
253
254 vpsrld $10, XTMP2, XTMP4 # XTMP4 = W[-2] >> 10 {BBAA}
255
256
257 ROTATE_ARGS
258
259 ################################### RND N + 2 ############################
260
261 mov a, y3 # y3 = a # MAJA
262 rorx $25, e, y0 # y0 = e >> 25 # S1A
263 offset = \disp + 2*4
264 addl offset(%rsp, SRND), h # h = k + w + h # --
265
266 vpsrlq $19, XTMP2, XTMP3 # XTMP3 = W[-2] ror 19 {xBxA}
267 rorx $11, e, y1 # y1 = e >> 11 # S1B
268 or c, y3 # y3 = a|c # MAJA
269 mov f, y2 # y2 = f # CH
270 xor g, y2 # y2 = f^g # CH
271
272 rorx $13, a, T1 # T1 = a >> 13 # S0B
273 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
274 vpsrlq $17, XTMP2, XTMP2 # XTMP2 = W[-2] ror 17 {xBxA}
275 and e, y2 # y2 = (f^g)&e # CH
276
277 rorx $6, e, y1 # y1 = (e >> 6) # S1
278 vpxor XTMP3, XTMP2, XTMP2
279 add h, d # d = k + w + h + d # --
280 and b, y3 # y3 = (a|c)&b # MAJA
281
282 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
283 rorx $22, a, y1 # y1 = a >> 22 # S0A
284 vpxor XTMP2, XTMP4, XTMP4 # XTMP4 = s1 {xBxA}
285 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
286
287 vpshufb SHUF_00BA, XTMP4, XTMP4 # XTMP4 = s1 {00BA}
288 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
289 rorx $2, a ,T1 # T1 = (a >> 2) # S0
290 vpaddd XTMP4, XTMP0, XTMP0 # XTMP0 = {..., ..., W[1], W[0]}
291
292 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
293 mov a, T1 # T1 = a # MAJB
294 and c, T1 # T1 = a&c # MAJB
295 add y0, y2 # y2 = S1 + CH # --
296 vpshufd $0b01010000, XTMP0, XTMP2 # XTMP2 = W[-2] {DDCC}
297
298 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
299 add y1,h # h = k + w + h + S0 # --
300 add y2,d # d = k + w + h + d + S1 + CH = d + t1 # --
301 add y2,h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
302
303 add y3,h # h = t1 + S0 + MAJ # --
304
305
306 ROTATE_ARGS
307
308 ################################### RND N + 3 ############################
309
310 mov a, y3 # y3 = a # MAJA
311 rorx $25, e, y0 # y0 = e >> 25 # S1A
312 rorx $11, e, y1 # y1 = e >> 11 # S1B
313 offset = \disp + 3*4
314 addl offset(%rsp, SRND), h # h = k + w + h # --
315 or c, y3 # y3 = a|c # MAJA
316
317
318 vpsrld $10, XTMP2, XTMP5 # XTMP5 = W[-2] >> 10 {DDCC}
319 mov f, y2 # y2 = f # CH
320 rorx $13, a, T1 # T1 = a >> 13 # S0B
321 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
322 xor g, y2 # y2 = f^g # CH
323
324
325 vpsrlq $19, XTMP2, XTMP3 # XTMP3 = W[-2] ror 19 {xDxC}
326 rorx $6, e, y1 # y1 = (e >> 6) # S1
327 and e, y2 # y2 = (f^g)&e # CH
328 add h, d # d = k + w + h + d # --
329 and b, y3 # y3 = (a|c)&b # MAJA
330
331 vpsrlq $17, XTMP2, XTMP2 # XTMP2 = W[-2] ror 17 {xDxC}
332 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
333 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
334
335 vpxor XTMP3, XTMP2, XTMP2
336 rorx $22, a, y1 # y1 = a >> 22 # S0A
337 add y0, y2 # y2 = S1 + CH # --
338
339 vpxor XTMP2, XTMP5, XTMP5 # XTMP5 = s1 {xDxC}
340 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
341 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
342
343 rorx $2, a, T1 # T1 = (a >> 2) # S0
344 vpshufb SHUF_DC00, XTMP5, XTMP5 # XTMP5 = s1 {DC00}
345
346 vpaddd XTMP0, XTMP5, X0 # X0 = {W[3], W[2], W[1], W[0]}
347 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
348 mov a, T1 # T1 = a # MAJB
349 and c, T1 # T1 = a&c # MAJB
350 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
351
352 add y1, h # h = k + w + h + S0 # --
353 add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
354 add y3, h # h = t1 + S0 + MAJ # --
355
356 ROTATE_ARGS
357 rotate_Xs
358 .endm
359
360 .macro DO_4ROUNDS disp
361 ################################### RND N + 0 ###########################
362
363 mov f, y2 # y2 = f # CH
364 rorx $25, e, y0 # y0 = e >> 25 # S1A
365 rorx $11, e, y1 # y1 = e >> 11 # S1B
366 xor g, y2 # y2 = f^g # CH
367
368 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
369 rorx $6, e, y1 # y1 = (e >> 6) # S1
370 and e, y2 # y2 = (f^g)&e # CH
371
372 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
373 rorx $13, a, T1 # T1 = a >> 13 # S0B
374 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
375 rorx $22, a, y1 # y1 = a >> 22 # S0A
376 mov a, y3 # y3 = a # MAJA
377
378 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
379 rorx $2, a, T1 # T1 = (a >> 2) # S0
380 addl \disp(%rsp, SRND), h # h = k + w + h # --
381 or c, y3 # y3 = a|c # MAJA
382
383 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
384 mov a, T1 # T1 = a # MAJB
385 and b, y3 # y3 = (a|c)&b # MAJA
386 and c, T1 # T1 = a&c # MAJB
387 add y0, y2 # y2 = S1 + CH # --
388
389
390 add h, d # d = k + w + h + d # --
391 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
392 add y1, h # h = k + w + h + S0 # --
393 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
394
395 ROTATE_ARGS
396
397 ################################### RND N + 1 ###########################
398
399 add y2, old_h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
400 mov f, y2 # y2 = f # CH
401 rorx $25, e, y0 # y0 = e >> 25 # S1A
402 rorx $11, e, y1 # y1 = e >> 11 # S1B
403 xor g, y2 # y2 = f^g # CH
404
405 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
406 rorx $6, e, y1 # y1 = (e >> 6) # S1
407 and e, y2 # y2 = (f^g)&e # CH
408 add y3, old_h # h = t1 + S0 + MAJ # --
409
410 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
411 rorx $13, a, T1 # T1 = a >> 13 # S0B
412 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
413 rorx $22, a, y1 # y1 = a >> 22 # S0A
414 mov a, y3 # y3 = a # MAJA
415
416 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
417 rorx $2, a, T1 # T1 = (a >> 2) # S0
418 offset = 4*1 + \disp
419 addl offset(%rsp, SRND), h # h = k + w + h # --
420 or c, y3 # y3 = a|c # MAJA
421
422 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
423 mov a, T1 # T1 = a # MAJB
424 and b, y3 # y3 = (a|c)&b # MAJA
425 and c, T1 # T1 = a&c # MAJB
426 add y0, y2 # y2 = S1 + CH # --
427
428
429 add h, d # d = k + w + h + d # --
430 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
431 add y1, h # h = k + w + h + S0 # --
432
433 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
434
435 ROTATE_ARGS
436
437 ################################### RND N + 2 ##############################
438
439 add y2, old_h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
440 mov f, y2 # y2 = f # CH
441 rorx $25, e, y0 # y0 = e >> 25 # S1A
442 rorx $11, e, y1 # y1 = e >> 11 # S1B
443 xor g, y2 # y2 = f^g # CH
444
445 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
446 rorx $6, e, y1 # y1 = (e >> 6) # S1
447 and e, y2 # y2 = (f^g)&e # CH
448 add y3, old_h # h = t1 + S0 + MAJ # --
449
450 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
451 rorx $13, a, T1 # T1 = a >> 13 # S0B
452 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
453 rorx $22, a, y1 # y1 = a >> 22 # S0A
454 mov a, y3 # y3 = a # MAJA
455
456 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
457 rorx $2, a, T1 # T1 = (a >> 2) # S0
458 offset = 4*2 + \disp
459 addl offset(%rsp, SRND), h # h = k + w + h # --
460 or c, y3 # y3 = a|c # MAJA
461
462 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
463 mov a, T1 # T1 = a # MAJB
464 and b, y3 # y3 = (a|c)&b # MAJA
465 and c, T1 # T1 = a&c # MAJB
466 add y0, y2 # y2 = S1 + CH # --
467
468
469 add h, d # d = k + w + h + d # --
470 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
471 add y1, h # h = k + w + h + S0 # --
472
473 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
474
475 ROTATE_ARGS
476
477 ################################### RND N + 3 ###########################
478
479 add y2, old_h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
480 mov f, y2 # y2 = f # CH
481 rorx $25, e, y0 # y0 = e >> 25 # S1A
482 rorx $11, e, y1 # y1 = e >> 11 # S1B
483 xor g, y2 # y2 = f^g # CH
484
485 xor y1, y0 # y0 = (e>>25) ^ (e>>11) # S1
486 rorx $6, e, y1 # y1 = (e >> 6) # S1
487 and e, y2 # y2 = (f^g)&e # CH
488 add y3, old_h # h = t1 + S0 + MAJ # --
489
490 xor y1, y0 # y0 = (e>>25) ^ (e>>11) ^ (e>>6) # S1
491 rorx $13, a, T1 # T1 = a >> 13 # S0B
492 xor g, y2 # y2 = CH = ((f^g)&e)^g # CH
493 rorx $22, a, y1 # y1 = a >> 22 # S0A
494 mov a, y3 # y3 = a # MAJA
495
496 xor T1, y1 # y1 = (a>>22) ^ (a>>13) # S0
497 rorx $2, a, T1 # T1 = (a >> 2) # S0
498 offset = 4*3 + \disp
499 addl offset(%rsp, SRND), h # h = k + w + h # --
500 or c, y3 # y3 = a|c # MAJA
501
502 xor T1, y1 # y1 = (a>>22) ^ (a>>13) ^ (a>>2) # S0
503 mov a, T1 # T1 = a # MAJB
504 and b, y3 # y3 = (a|c)&b # MAJA
505 and c, T1 # T1 = a&c # MAJB
506 add y0, y2 # y2 = S1 + CH # --
507
508
509 add h, d # d = k + w + h + d # --
510 or T1, y3 # y3 = MAJ = (a|c)&b)|(a&c) # MAJ
511 add y1, h # h = k + w + h + S0 # --
512
513 add y2, d # d = k + w + h + d + S1 + CH = d + t1 # --
514
515
516 add y2, h # h = k + w + h + S0 + S1 + CH = t1 + S0# --
517
518 add y3, h # h = t1 + S0 + MAJ # --
519
520 ROTATE_ARGS
521
522 .endm
523
524 ########################################################################
525 ## void sha256_transform_rorx(void *input_data, UINT32 digest[8], UINT64 num_blks)
526 ## arg 1 : pointer to digest
527 ## arg 2 : pointer to input data
528 ## arg 3 : Num blocks
529 ########################################################################
530 .text
531 ENTRY(sha256_transform_rorx)
532 .align 32
533 pushq %rbx
534 pushq %rbp
535 pushq %r12
536 pushq %r13
537 pushq %r14
538 pushq %r15
539
540 mov %rsp, %rax
541 subq $STACK_SIZE, %rsp
542 and $-32, %rsp # align rsp to 32 byte boundary
543 mov %rax, _RSP(%rsp)
544
545
546 shl $6, NUM_BLKS # convert to bytes
547 jz done_hash
548 lea -64(INP, NUM_BLKS), NUM_BLKS # pointer to last block
549 mov NUM_BLKS, _INP_END(%rsp)
550
551 cmp NUM_BLKS, INP
552 je only_one_block
553
554 ## load initial digest
555 mov (CTX), a
556 mov 4*1(CTX), b
557 mov 4*2(CTX), c
558 mov 4*3(CTX), d
559 mov 4*4(CTX), e
560 mov 4*5(CTX), f
561 mov 4*6(CTX), g
562 mov 4*7(CTX), h
563
564 vmovdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), BYTE_FLIP_MASK
565 vmovdqa _SHUF_00BA(%rip), SHUF_00BA
566 vmovdqa _SHUF_DC00(%rip), SHUF_DC00
567
568 mov CTX, _CTX(%rsp)
569
570 loop0:
571 lea K256(%rip), TBL
572
573 ## Load first 16 dwords from two blocks
574 VMOVDQ 0*32(INP),XTMP0
575 VMOVDQ 1*32(INP),XTMP1
576 VMOVDQ 2*32(INP),XTMP2
577 VMOVDQ 3*32(INP),XTMP3
578
579 ## byte swap data
580 vpshufb BYTE_FLIP_MASK, XTMP0, XTMP0
581 vpshufb BYTE_FLIP_MASK, XTMP1, XTMP1
582 vpshufb BYTE_FLIP_MASK, XTMP2, XTMP2
583 vpshufb BYTE_FLIP_MASK, XTMP3, XTMP3
584
585 ## transpose data into high/low halves
586 vperm2i128 $0x20, XTMP2, XTMP0, X0
587 vperm2i128 $0x31, XTMP2, XTMP0, X1
588 vperm2i128 $0x20, XTMP3, XTMP1, X2
589 vperm2i128 $0x31, XTMP3, XTMP1, X3
590
591 last_block_enter:
592 add $64, INP
593 mov INP, _INP(%rsp)
594
595 ## schedule 48 input dwords, by doing 3 rounds of 12 each
596 xor SRND, SRND
597
598 .align 16
599 loop1:
600 vpaddd 0*32(TBL, SRND), X0, XFER
601 vmovdqa XFER, 0*32+_XFER(%rsp, SRND)
602 FOUR_ROUNDS_AND_SCHED _XFER + 0*32
603
604 vpaddd 1*32(TBL, SRND), X0, XFER
605 vmovdqa XFER, 1*32+_XFER(%rsp, SRND)
606 FOUR_ROUNDS_AND_SCHED _XFER + 1*32
607
608 vpaddd 2*32(TBL, SRND), X0, XFER
609 vmovdqa XFER, 2*32+_XFER(%rsp, SRND)
610 FOUR_ROUNDS_AND_SCHED _XFER + 2*32
611
612 vpaddd 3*32(TBL, SRND), X0, XFER
613 vmovdqa XFER, 3*32+_XFER(%rsp, SRND)
614 FOUR_ROUNDS_AND_SCHED _XFER + 3*32
615
616 add $4*32, SRND
617 cmp $3*4*32, SRND
618 jb loop1
619
620 loop2:
621 ## Do last 16 rounds with no scheduling
622 vpaddd 0*32(TBL, SRND), X0, XFER
623 vmovdqa XFER, 0*32+_XFER(%rsp, SRND)
624 DO_4ROUNDS _XFER + 0*32
625 vpaddd 1*32(TBL, SRND), X1, XFER
626 vmovdqa XFER, 1*32+_XFER(%rsp, SRND)
627 DO_4ROUNDS _XFER + 1*32
628 add $2*32, SRND
629
630 vmovdqa X2, X0
631 vmovdqa X3, X1
632
633 cmp $4*4*32, SRND
634 jb loop2
635
636 mov _CTX(%rsp), CTX
637 mov _INP(%rsp), INP
638
639 addm (4*0)(CTX),a
640 addm (4*1)(CTX),b
641 addm (4*2)(CTX),c
642 addm (4*3)(CTX),d
643 addm (4*4)(CTX),e
644 addm (4*5)(CTX),f
645 addm (4*6)(CTX),g
646 addm (4*7)(CTX),h
647
648 cmp _INP_END(%rsp), INP
649 ja done_hash
650
651 #### Do second block using previously scheduled results
652 xor SRND, SRND
653 .align 16
654 loop3:
655 DO_4ROUNDS _XFER + 0*32 + 16
656 DO_4ROUNDS _XFER + 1*32 + 16
657 add $2*32, SRND
658 cmp $4*4*32, SRND
659 jb loop3
660
661 mov _CTX(%rsp), CTX
662 mov _INP(%rsp), INP
663 add $64, INP
664
665 addm (4*0)(CTX),a
666 addm (4*1)(CTX),b
667 addm (4*2)(CTX),c
668 addm (4*3)(CTX),d
669 addm (4*4)(CTX),e
670 addm (4*5)(CTX),f
671 addm (4*6)(CTX),g
672 addm (4*7)(CTX),h
673
674 cmp _INP_END(%rsp), INP
675 jb loop0
676 ja done_hash
677
678 do_last_block:
679 #### do last block
680 lea K256(%rip), TBL
681
682 VMOVDQ 0*16(INP),XWORD0
683 VMOVDQ 1*16(INP),XWORD1
684 VMOVDQ 2*16(INP),XWORD2
685 VMOVDQ 3*16(INP),XWORD3
686
687 vpshufb X_BYTE_FLIP_MASK, XWORD0, XWORD0
688 vpshufb X_BYTE_FLIP_MASK, XWORD1, XWORD1
689 vpshufb X_BYTE_FLIP_MASK, XWORD2, XWORD2
690 vpshufb X_BYTE_FLIP_MASK, XWORD3, XWORD3
691
692 jmp last_block_enter
693
694 only_one_block:
695
696 ## load initial digest
697 mov (4*0)(CTX),a
698 mov (4*1)(CTX),b
699 mov (4*2)(CTX),c
700 mov (4*3)(CTX),d
701 mov (4*4)(CTX),e
702 mov (4*5)(CTX),f
703 mov (4*6)(CTX),g
704 mov (4*7)(CTX),h
705
706 vmovdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), BYTE_FLIP_MASK
707 vmovdqa _SHUF_00BA(%rip), SHUF_00BA
708 vmovdqa _SHUF_DC00(%rip), SHUF_DC00
709
710 mov CTX, _CTX(%rsp)
711 jmp do_last_block
712
713 done_hash:
714
715 mov _RSP(%rsp), %rsp
716
717 popq %r15
718 popq %r14
719 popq %r13
720 popq %r12
721 popq %rbp
722 popq %rbx
723 ret
724 ENDPROC(sha256_transform_rorx)
725
726 .data
727 .align 64
728 K256:
729 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
730 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
731 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
732 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
733 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
734 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
735 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
736 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
737 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
738 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
739 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
740 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
741 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
742 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
743 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
744 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
745 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
746 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
747 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
748 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
749 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
750 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
751 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
752 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
753 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
754 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
755 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
756 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
757 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
758 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
759 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
760 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
761
762 PSHUFFLE_BYTE_FLIP_MASK:
763 .octa 0x0c0d0e0f08090a0b0405060700010203,0x0c0d0e0f08090a0b0405060700010203
764
765 # shuffle xBxA -> 00BA
766 _SHUF_00BA:
767 .octa 0xFFFFFFFFFFFFFFFF0b0a090803020100,0xFFFFFFFFFFFFFFFF0b0a090803020100
768
769 # shuffle xDxC -> DC00
770 _SHUF_DC00:
771 .octa 0x0b0a090803020100FFFFFFFFFFFFFFFF,0x0b0a090803020100FFFFFFFFFFFFFFFF
772 #endif
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