1 #! /usr/bin/env perl
2 # SPDX-License-Identifier: GPL-2.0
3
4 # This code is taken from the OpenSSL project
5 # has relicensed it under the GPLv2. Therefore
6 # you can redistribute it and/or modify it und
7 # Public License version 2 as published by the
8 #
9 # The original headers, including the original
10 # included below for completeness.
11
12 # Copyright 2014-2016 The OpenSSL Project Auth
13 #
14 # Licensed under the OpenSSL license (the "Lic
15 # this file except in compliance with the Lice
16 # in the file LICENSE in the source distributi
17 # https://www.openssl.org/source/license.html
18
19 # ============================================
20 # Written by Andy Polyakov <appro@openssl.org>
21 # project. The module is, however, dual licens
22 # CRYPTOGAMS licenses depending on where you o
23 # details see http://www.openssl.org/~appro/cr
24 # ============================================
25 #
26 # SHA256/512 for ARMv8.
27 #
28 # Performance in cycles per processed byte and
29 # over code generated with "default" compiler:
30 #
31 # SHA256-hw SHA256(*)
32 # Apple A7 1.97 10.5 (+33%)
33 # Cortex-A53 2.38 15.5 (+115%)
34 # Cortex-A57 2.31 11.6 (+86%)
35 # Denver 2.01 10.5 (+26%)
36 # X-Gene 20.0 (+100%)
37 # Mongoose 2.36 13.0 (+50%)
38 #
39 # (*) Software SHA256 results are of lesser
40 # mostly for informational purposes.
41 # (**) The result is a trade-off: it's possib
42 # 10% (or by 1 cycle per round), but at
43 # on Cortex-A53 (or by 4 cycles per roun
44 # (***) Super-impressive coefficients over gcc
45 # indication of some compiler "pathology
46 # generated with -mgeneral-regs-only is
47 # and the gap is only 40-90%.
48 #
49 # October 2016.
50 #
51 # Originally it was reckoned that it makes no
52 # version of SHA256 for 64-bit processors. Thi
53 # improvement on most wide-spread Cortex-A5x p
54 # to be marginal, same on Cortex-A53 and ~10%
55 # observed that 32-bit NEON SHA256 performs si
56 # 64-bit scalar version on *some* of the more
57 # result 64-bit NEON version of SHA256 was add
58 # all-round performance. For example it execut
59 # and Mongoose. [For reference, NEON version o
60 # deliver much less improvement, likely *negat
61 # Which is why NEON support is limited to SHA2
62
63 $output=pop;
64 $flavour=pop;
65
66 if ($flavour && $flavour ne "void") {
67 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
68 ( $xlate="${dir}arm-xlate.pl" and -f $xlat
69 ( $xlate="${dir}../../perlasm/arm-xlate.pl
70 die "can't locate arm-xlate.pl";
71
72 open OUT,"| \"$^X\" $xlate $flavour $outpu
73 *STDOUT=*OUT;
74 } else {
75 open STDOUT,">$output";
76 }
77
78 if ($output =~ /512/) {
79 $BITS=512;
80 $SZ=8;
81 @Sigma0=(28,34,39);
82 @Sigma1=(14,18,41);
83 @sigma0=(1, 8, 7);
84 @sigma1=(19,61, 6);
85 $rounds=80;
86 $reg_t="x";
87 } else {
88 $BITS=256;
89 $SZ=4;
90 @Sigma0=( 2,13,22);
91 @Sigma1=( 6,11,25);
92 @sigma0=( 7,18, 3);
93 @sigma1=(17,19,10);
94 $rounds=64;
95 $reg_t="w";
96 }
97
98 $func="sha${BITS}_block_data_order";
99
100 ($ctx,$inp,$num,$Ktbl)=map("x$_",(0..2,30));
101
102 @X=map("$reg_t$_",(3..15,0..2));
103 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("$reg_t$_",(2
104 ($t0,$t1,$t2,$t3)=map("$reg_t$_",(16,17,19,28)
105
106 sub BODY_00_xx {
107 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
108 my $j=($i+1)&15;
109 my ($T0,$T1,$T2)=(@X[($i-8)&15],@X[($i-9)&15],
110 $T0=@X[$i+3] if ($i<11);
111
112 $code.=<<___ if ($i<16);
113 #ifndef __AARCH64EB__
114 rev @X[$i],@X[$i]
115 #endif
116 ___
117 $code.=<<___ if ($i<13 && ($i&1));
118 ldp @X[$i+1],@X[$i+2],[$inp],#2*$S
119 ___
120 $code.=<<___ if ($i==13);
121 ldp @X[14],@X[15],[$inp]
122 ___
123 $code.=<<___ if ($i>=14);
124 ldr @X[($i-11)&15],[sp,#`$SZ*(($i-
125 ___
126 $code.=<<___ if ($i>0 && $i<16);
127 add $a,$a,$t1
128 ___
129 $code.=<<___ if ($i>=11);
130 str @X[($i-8)&15],[sp,#`$SZ*(($i-8
131 ___
132 # While ARMv8 specifies merged rotate-n-logica
133 # 'eor x,y,z,ror#n', it was found to negativel
134 # on Apple A7. The reason seems to be that it
135 # be available earlier. This means that such m
136 # not necessarily best choice on critical path
137 # Cortex-A5x handles merged instructions much
138 # rotate and logical... See (**) footnote abov
139 $code.=<<___ if ($i<15);
140 ror $t0,$e,#$Sigma1[0]
141 add $h,$h,$t2
142 eor $T0,$e,$e,ror#`$Sigma1[2]-$Sig
143 and $t1,$f,$e
144 bic $t2,$g,$e
145 add $h,$h,@X[$i&15]
146 orr $t1,$t1,$t2
147 eor $t2,$a,$b
148 eor $t0,$t0,$T0,ror#$Sigma1[1]
149 ror $T0,$a,#$Sigma0[0]
150 add $h,$h,$t1
151 eor $t1,$a,$a,ror#`$Sigma0[2]-$Sig
152 add $h,$h,$t0
153 and $t3,$t3,$t2
154 add $d,$d,$h
155 eor $t3,$t3,$b
156 eor $t1,$T0,$t1,ror#$Sigma0[1]
157 add $h,$h,$t3
158 ldr $t3,[$Ktbl],#$SZ
159 //add $h,$h,$t1
160 ___
161 $code.=<<___ if ($i>=15);
162 ror $t0,$e,#$Sigma1[0]
163 add $h,$h,$t2
164 ror $T1,@X[($j+1)&15],#$sigma0[0]
165 and $t1,$f,$e
166 ror $T2,@X[($j+14)&15],#$sigma1[0]
167 bic $t2,$g,$e
168 ror $T0,$a,#$Sigma0[0]
169 add $h,$h,@X[$i&15]
170 eor $t0,$t0,$e,ror#$Sigma1[1]
171 eor $T1,$T1,@X[($j+1)&15],ror#$sig
172 orr $t1,$t1,$t2
173 eor $t2,$a,$b
174 eor $t0,$t0,$e,ror#$Sigma1[2]
175 eor $T0,$T0,$a,ror#$Sigma0[1]
176 add $h,$h,$t1
177 and $t3,$t3,$t2
178 eor $T2,$T2,@X[($j+14)&15],ror#$si
179 eor $T1,$T1,@X[($j+1)&15],lsr#$sig
180 add $h,$h,$t0
181 eor $t3,$t3,$b
182 eor $t1,$T0,$a,ror#$Sigma0[2]
183 eor $T2,$T2,@X[($j+14)&15],lsr#$si
184 add @X[$j],@X[$j],@X[($j+9)&15]
185 add $d,$d,$h
186 add $h,$h,$t3
187 ldr $t3,[$Ktbl],#$SZ
188 add @X[$j],@X[$j],$T1
189 add $h,$h,$t1
190 add @X[$j],@X[$j],$T2
191 ___
192 ($t2,$t3)=($t3,$t2);
193 }
194
195 $code.=<<___;
196 #ifndef __KERNEL__
197 # include "arm_arch.h"
198 #endif
199
200 .text
201
202 .extern OPENSSL_armcap_P
203 .globl $func
204 .type $func,%function
205 .align 6
206 $func:
207 ___
208 $code.=<<___ if ($SZ==4);
209 #ifndef __KERNEL__
210 # ifdef __ILP32__
211 ldrsw x16,.LOPENSSL_armcap_P
212 # else
213 ldr x16,.LOPENSSL_armcap_P
214 # endif
215 adr x17,.LOPENSSL_armcap_P
216 add x16,x16,x17
217 ldr w16,[x16]
218 tst w16,#ARMV8_SHA256
219 b.ne .Lv8_entry
220 tst w16,#ARMV7_NEON
221 b.ne .Lneon_entry
222 #endif
223 ___
224 $code.=<<___;
225 stp x29,x30,[sp,#-128]!
226 add x29,sp,#0
227
228 stp x19,x20,[sp,#16]
229 stp x21,x22,[sp,#32]
230 stp x23,x24,[sp,#48]
231 stp x25,x26,[sp,#64]
232 stp x27,x28,[sp,#80]
233 sub sp,sp,#4*$SZ
234
235 ldp $A,$B,[$ctx]
236 ldp $C,$D,[$ctx,#2*$SZ]
237 ldp $E,$F,[$ctx,#4*$SZ]
238 add $num,$inp,$num,lsl#`log(16*$SZ
239 ldp $G,$H,[$ctx,#6*$SZ]
240 adr $Ktbl,.LK$BITS
241 stp $ctx,$num,[x29,#96]
242
243 .Loop:
244 ldp @X[0],@X[1],[$inp],#2*$SZ
245 ldr $t2,[$Ktbl],#$SZ
246 eor $t3,$B,$C
247 str $inp,[x29,#112]
248 ___
249 for ($i=0;$i<16;$i++) { &BODY_00_xx($i,@V);
250 $code.=".Loop_16_xx:\n";
251 for (;$i<32;$i++) { &BODY_00_xx($i,@V);
252 $code.=<<___;
253 cbnz $t2,.Loop_16_xx
254
255 ldp $ctx,$num,[x29,#96]
256 ldr $inp,[x29,#112]
257 sub $Ktbl,$Ktbl,#`$SZ*($rounds+1)`
258
259 ldp @X[0],@X[1],[$ctx]
260 ldp @X[2],@X[3],[$ctx,#2*$SZ]
261 add $inp,$inp,#14*$SZ
262 ldp @X[4],@X[5],[$ctx,#4*$SZ]
263 add $A,$A,@X[0]
264 ldp @X[6],@X[7],[$ctx,#6*$SZ]
265 add $B,$B,@X[1]
266 add $C,$C,@X[2]
267 add $D,$D,@X[3]
268 stp $A,$B,[$ctx]
269 add $E,$E,@X[4]
270 add $F,$F,@X[5]
271 stp $C,$D,[$ctx,#2*$SZ]
272 add $G,$G,@X[6]
273 add $H,$H,@X[7]
274 cmp $inp,$num
275 stp $E,$F,[$ctx,#4*$SZ]
276 stp $G,$H,[$ctx,#6*$SZ]
277 b.ne .Loop
278
279 ldp x19,x20,[x29,#16]
280 add sp,sp,#4*$SZ
281 ldp x21,x22,[x29,#32]
282 ldp x23,x24,[x29,#48]
283 ldp x25,x26,[x29,#64]
284 ldp x27,x28,[x29,#80]
285 ldp x29,x30,[sp],#128
286 ret
287 .size $func,.-$func
288
289 .align 6
290 .type .LK$BITS,%object
291 .LK$BITS:
292 ___
293 $code.=<<___ if ($SZ==8);
294 .quad 0x428a2f98d728ae22,0x713744912
295 .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58
296 .quad 0x3956c25bf348b538,0x59f111f1b
297 .quad 0x923f82a4af194f9b,0xab1c5ed5d
298 .quad 0xd807aa98a3030242,0x12835b014
299 .quad 0x243185be4ee4b28c,0x550c7dc3d
300 .quad 0x72be5d74f27b896f,0x80deb1fe3
301 .quad 0x9bdc06a725c71235,0xc19bf174c
302 .quad 0xe49b69c19ef14ad2,0xefbe47863
303 .quad 0x0fc19dc68b8cd5b5,0x240ca1cc7
304 .quad 0x2de92c6f592b0275,0x4a7484aa6
305 .quad 0x5cb0a9dcbd41fbd4,0x76f988da8
306 .quad 0x983e5152ee66dfab,0xa831c66d2
307 .quad 0xb00327c898fb213f,0xbf597fc7b
308 .quad 0xc6e00bf33da88fc2,0xd5a791479
309 .quad 0x06ca6351e003826f,0x142929670
310 .quad 0x27b70a8546d22ffc,0x2e1b21385
311 .quad 0x4d2c6dfc5ac42aed,0x53380d139
312 .quad 0x650a73548baf63de,0x766a0abb3
313 .quad 0x81c2c92e47edaee6,0x92722c851
314 .quad 0xa2bfe8a14cf10364,0xa81a664bb
315 .quad 0xc24b8b70d0f89791,0xc76c51a30
316 .quad 0xd192e819d6ef5218,0xd69906245
317 .quad 0xf40e35855771202a,0x106aa0703
318 .quad 0x19a4c116b8d2d0c8,0x1e376c085
319 .quad 0x2748774cdf8eeb99,0x34b0bcb5e
320 .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae
321 .quad 0x5b9cca4f7763e373,0x682e6ff3d
322 .quad 0x748f82ee5defb2fc,0x78a5636f4
323 .quad 0x84c87814a1f0ab72,0x8cc702081
324 .quad 0x90befffa23631e28,0xa4506cebd
325 .quad 0xbef9a3f7b2c67915,0xc67178f2e
326 .quad 0xca273eceea26619c,0xd186b8c72
327 .quad 0xeada7dd6cde0eb1e,0xf57d4f7fe
328 .quad 0x06f067aa72176fba,0x0a637dc5a
329 .quad 0x113f9804bef90dae,0x1b710b351
330 .quad 0x28db77f523047d84,0x32caab7b4
331 .quad 0x3c9ebe0a15c9bebc,0x431d67c49
332 .quad 0x4cc5d4becb3e42b6,0x597f299cf
333 .quad 0x5fcb6fab3ad6faec,0x6c44198c4
334 .quad 0 // terminator
335 ___
336 $code.=<<___ if ($SZ==4);
337 .long 0x428a2f98,0x71374491,0xb5c0fb
338 .long 0x3956c25b,0x59f111f1,0x923f82
339 .long 0xd807aa98,0x12835b01,0x243185
340 .long 0x72be5d74,0x80deb1fe,0x9bdc06
341 .long 0xe49b69c1,0xefbe4786,0x0fc19d
342 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9
343 .long 0x983e5152,0xa831c66d,0xb00327
344 .long 0xc6e00bf3,0xd5a79147,0x06ca63
345 .long 0x27b70a85,0x2e1b2138,0x4d2c6d
346 .long 0x650a7354,0x766a0abb,0x81c2c9
347 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b
348 .long 0xd192e819,0xd6990624,0xf40e35
349 .long 0x19a4c116,0x1e376c08,0x274877
350 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca
351 .long 0x748f82ee,0x78a5636f,0x84c878
352 .long 0x90befffa,0xa4506ceb,0xbef9a3
353 .long 0 //terminator
354 ___
355 $code.=<<___;
356 .size .LK$BITS,.-.LK$BITS
357 #ifndef __KERNEL__
358 .align 3
359 .LOPENSSL_armcap_P:
360 # ifdef __ILP32__
361 .long OPENSSL_armcap_P-.
362 # else
363 .quad OPENSSL_armcap_P-.
364 # endif
365 #endif
366 .asciz "SHA$BITS block transform for ARMv8, C<
367 .align 2
368 ___
369
370 if ($SZ==4) {
371 my $Ktbl="x3";
372
373 my ($ABCD,$EFGH,$abcd)=map("v$_.16b",(0..2));
374 my @MSG=map("v$_.16b",(4..7));
375 my ($W0,$W1)=("v16.4s","v17.4s");
376 my ($ABCD_SAVE,$EFGH_SAVE)=("v18.16b","v19.16b
377
378 $code.=<<___;
379 #ifndef __KERNEL__
380 .type sha256_block_armv8,%function
381 .align 6
382 sha256_block_armv8:
383 .Lv8_entry:
384 stp x29,x30,[sp,#-16]!
385 add x29,sp,#0
386
387 ld1.32 {$ABCD,$EFGH},[$ctx]
388 adr $Ktbl,.LK256
389
390 .Loop_hw:
391 ld1 {@MSG[0]-@MSG[3]},[$in
392 sub $num,$num,#1
393 ld1.32 {$W0},[$Ktbl],#16
394 rev32 @MSG[0],@MSG[0]
395 rev32 @MSG[1],@MSG[1]
396 rev32 @MSG[2],@MSG[2]
397 rev32 @MSG[3],@MSG[3]
398 orr $ABCD_SAVE,$ABCD,$ABCD
399 orr $EFGH_SAVE,$EFGH,$EFGH
400 ___
401 for($i=0;$i<12;$i++) {
402 $code.=<<___;
403 ld1.32 {$W1},[$Ktbl],#16
404 add.i32 $W0,$W0,@MSG[0]
405 sha256su0 @MSG[0],@MSG[1]
406 orr $abcd,$ABCD,$ABCD
407 sha256h $ABCD,$EFGH,$W0
408 sha256h2 $EFGH,$abcd,$W0
409 sha256su1 @MSG[0],@MSG[2],@MSG[3
410 ___
411 ($W0,$W1)=($W1,$W0); push(@MSG,shif
412 }
413 $code.=<<___;
414 ld1.32 {$W1},[$Ktbl],#16
415 add.i32 $W0,$W0,@MSG[0]
416 orr $abcd,$ABCD,$ABCD
417 sha256h $ABCD,$EFGH,$W0
418 sha256h2 $EFGH,$abcd,$W0
419
420 ld1.32 {$W0},[$Ktbl],#16
421 add.i32 $W1,$W1,@MSG[1]
422 orr $abcd,$ABCD,$ABCD
423 sha256h $ABCD,$EFGH,$W1
424 sha256h2 $EFGH,$abcd,$W1
425
426 ld1.32 {$W1},[$Ktbl]
427 add.i32 $W0,$W0,@MSG[2]
428 sub $Ktbl,$Ktbl,#$rounds*$
429 orr $abcd,$ABCD,$ABCD
430 sha256h $ABCD,$EFGH,$W0
431 sha256h2 $EFGH,$abcd,$W0
432
433 add.i32 $W1,$W1,@MSG[3]
434 orr $abcd,$ABCD,$ABCD
435 sha256h $ABCD,$EFGH,$W1
436 sha256h2 $EFGH,$abcd,$W1
437
438 add.i32 $ABCD,$ABCD,$ABCD_SAVE
439 add.i32 $EFGH,$EFGH,$EFGH_SAVE
440
441 cbnz $num,.Loop_hw
442
443 st1.32 {$ABCD,$EFGH},[$ctx]
444
445 ldr x29,[sp],#16
446 ret
447 .size sha256_block_armv8,.-sha256_block_armv
448 #endif
449 ___
450 }
451
452 if ($SZ==4) { ##############################
453 # You'll surely note a lot of similarities wit
454 # and of course it's not a coincidence. sha256
455 # initial template, but was adapted for ARMv8
456 # extensively re-tuned for all-round performan
457
458 my @V = ($A,$B,$C,$D,$E,$F,$G,$H) = map("w$_",
459 my ($t0,$t1,$t2,$t3,$t4) = map("w$_",(11..15))
460 my $Ktbl="x16";
461 my $Xfer="x17";
462 my @X = map("q$_",(0..3));
463 my ($T0,$T1,$T2,$T3,$T4,$T5,$T6,$T7) = map("q$
464 my $j=0;
465
466 sub AUTOLOAD() # thunk [simplified] x
467 { my $opcode = $AUTOLOAD; $opcode =~ s/.*:://;
468 my $arg = pop;
469 $arg = "#$arg" if ($arg*1 eq $arg);
470 $code .= "\t$opcode\t".join(',',@_,$arg)."
471 }
472
473 sub Dscalar { shift =~ m|[qv]([0-9]+)|?"d$1":"
474 sub Dlo { shift =~ m|[qv]([0-9]+)|?"v$1.d[
475 sub Dhi { shift =~ m|[qv]([0-9]+)|?"v$1.d[
476
477 sub Xupdate()
478 { use integer;
479 my $body = shift;
480 my @insns = (&$body,&$body,&$body,&$body);
481 my ($a,$b,$c,$d,$e,$f,$g,$h);
482
483 &ext_8 ($T0,@X[0],@X[1],4);
484 eval(shift(@insns));
485 eval(shift(@insns));
486 eval(shift(@insns));
487 &ext_8 ($T3,@X[2],@X[3],4);
488 eval(shift(@insns));
489 eval(shift(@insns));
490 &mov (&Dscalar($T7),&Dhi(@X
491 eval(shift(@insns));
492 eval(shift(@insns));
493 &ushr_32 ($T2,$T0,$sigma0[0]);
494 eval(shift(@insns));
495 &ushr_32 ($T1,$T0,$sigma0[2]);
496 eval(shift(@insns));
497 &add_32 (@X[0],@X[0],$T3);
498 eval(shift(@insns));
499 &sli_32 ($T2,$T0,32-$sigma0[0]
500 eval(shift(@insns));
501 eval(shift(@insns));
502 &ushr_32 ($T3,$T0,$sigma0[1]);
503 eval(shift(@insns));
504 eval(shift(@insns));
505 &eor_8 ($T1,$T1,$T2);
506 eval(shift(@insns));
507 eval(shift(@insns));
508 &sli_32 ($T3,$T0,32-$sigma0[1]
509 eval(shift(@insns));
510 eval(shift(@insns));
511 &ushr_32 ($T4,$T7,$sigma1[0]);
512 eval(shift(@insns));
513 eval(shift(@insns));
514 &eor_8 ($T1,$T1,$T3);
515 eval(shift(@insns));
516 eval(shift(@insns));
517 &sli_32 ($T4,$T7,32-$sigma1[0]
518 eval(shift(@insns));
519 eval(shift(@insns));
520 &ushr_32 ($T5,$T7,$sigma1[2]);
521 eval(shift(@insns));
522 eval(shift(@insns));
523 &ushr_32 ($T3,$T7,$sigma1[1]);
524 eval(shift(@insns));
525 eval(shift(@insns));
526 &add_32 (@X[0],@X[0],$T1);
527 eval(shift(@insns));
528 eval(shift(@insns));
529 &sli_u32 ($T3,$T7,32-$sigma1[1]
530 eval(shift(@insns));
531 eval(shift(@insns));
532 &eor_8 ($T5,$T5,$T4);
533 eval(shift(@insns));
534 eval(shift(@insns));
535 eval(shift(@insns));
536 &eor_8 ($T5,$T5,$T3);
537 eval(shift(@insns));
538 eval(shift(@insns));
539 eval(shift(@insns));
540 &add_32 (@X[0],@X[0],$T5);
541 eval(shift(@insns));
542 eval(shift(@insns));
543 eval(shift(@insns));
544 &ushr_32 ($T6,@X[0],$sigma1[0])
545 eval(shift(@insns));
546 &ushr_32 ($T7,@X[0],$sigma1[2])
547 eval(shift(@insns));
548 eval(shift(@insns));
549 &sli_32 ($T6,@X[0],32-$sigma1[
550 eval(shift(@insns));
551 &ushr_32 ($T5,@X[0],$sigma1[1])
552 eval(shift(@insns));
553 eval(shift(@insns));
554 &eor_8 ($T7,$T7,$T6);
555 eval(shift(@insns));
556 eval(shift(@insns));
557 &sli_32 ($T5,@X[0],32-$sigma1[
558 eval(shift(@insns));
559 eval(shift(@insns));
560 &ld1_32 ("{$T0}","[$Ktbl], #16
561 eval(shift(@insns));
562 &eor_8 ($T7,$T7,$T5);
563 eval(shift(@insns));
564 eval(shift(@insns));
565 &eor_8 ($T5,$T5,$T5);
566 eval(shift(@insns));
567 eval(shift(@insns));
568 &mov (&Dhi($T5), &Dlo($T7))
569 eval(shift(@insns));
570 eval(shift(@insns));
571 eval(shift(@insns));
572 &add_32 (@X[0],@X[0],$T5);
573 eval(shift(@insns));
574 eval(shift(@insns));
575 eval(shift(@insns));
576 &add_32 ($T0,$T0,@X[0]);
577 while($#insns>=1) { eval(shift(@insns
578 &st1_32 ("{$T0}","[$Xfer], #16
579 eval(shift(@insns));
580
581 push(@X,shift(@X)); # "rot
582 }
583
584 sub Xpreload()
585 { use integer;
586 my $body = shift;
587 my @insns = (&$body,&$body,&$body,&$body);
588 my ($a,$b,$c,$d,$e,$f,$g,$h);
589
590 eval(shift(@insns));
591 eval(shift(@insns));
592 &ld1_8 ("{@X[0]}","[$inp],#16
593 eval(shift(@insns));
594 eval(shift(@insns));
595 &ld1_32 ("{$T0}","[$Ktbl],#16"
596 eval(shift(@insns));
597 eval(shift(@insns));
598 eval(shift(@insns));
599 eval(shift(@insns));
600 &rev32 (@X[0],@X[0]);
601 eval(shift(@insns));
602 eval(shift(@insns));
603 eval(shift(@insns));
604 eval(shift(@insns));
605 &add_32 ($T0,$T0,@X[0]);
606 foreach (@insns) { eval; } # rema
607 &st1_32 ("{$T0}","[$Xfer], #16
608
609 push(@X,shift(@X)); # "rot
610 }
611
612 sub body_00_15 () {
613 (
614 '($a,$b,$c,$d,$e,$f,$g,$h)=@V;'.
615 '&add ($h,$h,$t1)',
616 '&add ($a,$a,$t4);'.
617 '&and ($t1,$f,$e)',
618 '&bic ($t4,$g,$e)',
619 '&eor ($t0,$e,$e,"ror#".($Sigma1[1]-
620 '&add ($a,$a,$t2)',
621 '&orr ($t1,$t1,$t4)',
622 '&eor ($t0,$t0,$e,"ror#".($Sigma1[2]
623 '&eor ($t4,$a,$a,"ror#".($Sigma0[1]-
624 '&add ($h,$h,$t1)',
625 '&ror ($t0,$t0,"#$Sigma1[0]")',
626 '&eor ($t2,$a,$b)',
627 '&eor ($t4,$t4,$a,"ror#".($Sigma0[2]
628 '&add ($h,$h,$t0)',
629 '&ldr ($t1,sprintf "[sp,#%d]",4*(($j
630 '&ldr ($t1,"[$Ktbl]")
631 '&and ($t3,$t3,$t2)',
632 '&ror ($t4,$t4,"#$Sigma0[0]")',
633 '&add ($d,$d,$h)',
634 '&eor ($t3,$t3,$b)',
635 '$j++; unshift(@V,pop(@V)); ($t2,$t3)
636 )
637 }
638
639 $code.=<<___;
640 #ifdef __KERNEL__
641 .globl sha256_block_neon
642 #endif
643 .type sha256_block_neon,%function
644 .align 4
645 sha256_block_neon:
646 .Lneon_entry:
647 stp x29, x30, [sp, #-16]!
648 mov x29, sp
649 sub sp,sp,#16*4
650
651 adr $Ktbl,.LK256
652 add $num,$inp,$num,lsl#6 // len
653
654 ld1.8 {@X[0]},[$inp], #16
655 ld1.8 {@X[1]},[$inp], #16
656 ld1.8 {@X[2]},[$inp], #16
657 ld1.8 {@X[3]},[$inp], #16
658 ld1.32 {$T0},[$Ktbl], #16
659 ld1.32 {$T1},[$Ktbl], #16
660 ld1.32 {$T2},[$Ktbl], #16
661 ld1.32 {$T3},[$Ktbl], #16
662 rev32 @X[0],@X[0] // yes
663 rev32 @X[1],@X[1] // big
664 rev32 @X[2],@X[2]
665 rev32 @X[3],@X[3]
666 mov $Xfer,sp
667 add.32 $T0,$T0,@X[0]
668 add.32 $T1,$T1,@X[1]
669 add.32 $T2,$T2,@X[2]
670 st1.32 {$T0-$T1},[$Xfer], #32
671 add.32 $T3,$T3,@X[3]
672 st1.32 {$T2-$T3},[$Xfer]
673 sub $Xfer,$Xfer,#32
674
675 ldp $A,$B,[$ctx]
676 ldp $C,$D,[$ctx,#8]
677 ldp $E,$F,[$ctx,#16]
678 ldp $G,$H,[$ctx,#24]
679 ldr $t1,[sp,#0]
680 mov $t2,wzr
681 eor $t3,$B,$C
682 mov $t4,wzr
683 b .L_00_48
684
685 .align 4
686 .L_00_48:
687 ___
688 &Xupdate(\&body_00_15);
689 &Xupdate(\&body_00_15);
690 &Xupdate(\&body_00_15);
691 &Xupdate(\&body_00_15);
692 $code.=<<___;
693 cmp $t1,#0
694 ldr $t1,[sp,#0]
695 sub $Xfer,$Xfer,#64
696 bne .L_00_48
697
698 sub $Ktbl,$Ktbl,#256
699 cmp $inp,$num
700 mov $Xfer, #64
701 csel $Xfer, $Xfer, xzr, eq
702 sub $inp,$inp,$Xfer
703 mov $Xfer,sp
704 ___
705 &Xpreload(\&body_00_15);
706 &Xpreload(\&body_00_15);
707 &Xpreload(\&body_00_15);
708 &Xpreload(\&body_00_15);
709 $code.=<<___;
710 add $A,$A,$t4
711 ldp $t0,$t1,[$ctx,#0]
712 add $A,$A,$t2
713 ldp $t2,$t3,[$ctx,#8]
714 add $A,$A,$t0
715 add $B,$B,$t1
716 ldp $t0,$t1,[$ctx,#16]
717 add $C,$C,$t2
718 add $D,$D,$t3
719 ldp $t2,$t3,[$ctx,#24]
720 add $E,$E,$t0
721 add $F,$F,$t1
722 ldr $t1,[sp,#0]
723 stp $A,$B,[$ctx,#0]
724 add $G,$G,$t2
725 mov $t2,wzr
726 stp $C,$D,[$ctx,#8]
727 add $H,$H,$t3
728 stp $E,$F,[$ctx,#16]
729 eor $t3,$B,$C
730 stp $G,$H,[$ctx,#24]
731 mov $t4,wzr
732 mov $Xfer,sp
733 b.ne .L_00_48
734
735 ldr x29,[x29]
736 add sp,sp,#16*4+16
737 ret
738 .size sha256_block_neon,.-sha256_block_neon
739 ___
740 }
741
742 $code.=<<___;
743 #ifndef __KERNEL__
744 .comm OPENSSL_armcap_P,4,4
745 #endif
746 ___
747
748 { my %opcode = (
749 "sha256h" => 0x5e004000, "sha25
750 "sha256su0" => 0x5e282800, "sha25
751
752 sub unsha256 {
753 my ($mnemonic,$arg)=@_;
754
755 $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0
756 &&
757 sprintf ".inst\t0x%08x\t//%s %s",
758 $opcode{$mnemonic}|$1|
759 $mnemonic,$arg;
760 }
761 }
762
763 open SELF,$0;
764 while(<SELF>) {
765 next if (/^#!/);
766 last if (!s/^#/\/\// and !/^$/);
767 print;
768 }
769 close SELF;
770
771 foreach(split("\n",$code)) {
772
773 s/\`([^\`]*)\`/eval($1)/ge;
774
775 s/\b(sha256\w+)\s+([qv].*)/unsha256($1
776
777 s/\bq([0-9]+)\b/v$1.16b/g;
778
779 s/\.[ui]?8(\s)/$1/;
780 s/\.\w?32\b// and s/\.16b/\.
781 m/(ld|st)1[^\[]+\[0\]/ and s/\.4s/\.s
782
783 print $_,"\n";
784 }
785
786 close STDOUT;
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