2 # Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the OpenSSL license (the "License"). You may not use
5 # this file except in compliance with the License. You can obtain a copy
6 # in the file LICENSE in the source distribution or at
7 # https://www.openssl.org/source/license.html
9 # ====================================================================
10 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
11 # project. The module is, however, dual licensed under OpenSSL and
12 # CRYPTOGAMS licenses depending on where you obtain it. For further
13 # details see http://www.openssl.org/~appro/cryptogams/.
15 # Permission to use under GPLv2 terms is granted.
16 # ====================================================================
18 # SHA256/512 for ARMv8.
20 # Performance in cycles per processed byte and improvement coefficient
21 # over code generated with "default" compiler:
23 # SHA256-hw SHA256(*) SHA512
24 # Apple A7 1.97 10.5 (+33%) 6.73 (-1%(**))
25 # Cortex-A53 2.38 15.5 (+115%) 10.0 (+150%(***))
26 # Cortex-A57 2.31 11.6 (+86%) 7.51 (+260%(***))
27 # Denver 2.01 10.5 (+26%) 6.70 (+8%)
28 # X-Gene 20.0 (+100%) 12.8 (+300%(***))
29 # Mongoose 2.36 13.0 (+50%) 8.36 (+33%)
31 # (*) Software SHA256 results are of lesser relevance, presented
32 # mostly for informational purposes.
33 # (**) The result is a trade-off: it's possible to improve it by
34 # 10% (or by 1 cycle per round), but at the cost of 20% loss
35 # on Cortex-A53 (or by 4 cycles per round).
36 # (***) Super-impressive coefficients over gcc-generated code are
37 # indication of some compiler "pathology", most notably code
38 # generated with -mgeneral-regs-only is significanty faster
39 # and the gap is only 40-90%.
44 if ($flavour && $flavour ne "void") {
45 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
46 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
47 ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
48 die "can't locate arm-xlate.pl";
50 open OUT,"| \"$^X\" $xlate $flavour $output";
53 open STDOUT,">$output";
56 if ($output =~ /512/) {
76 $func="sha${BITS}_block_data_order";
78 ($ctx,$inp,$num,$Ktbl)=map("x$_",(0..2,30));
80 @X=map("$reg_t$_",(3..15,0..2));
81 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("$reg_t$_",(20..27));
82 ($t0,$t1,$t2,$t3)=map("$reg_t$_",(16,17,19,28));
85 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
87 my ($T0,$T1,$T2)=(@X[($i-8)&15],@X[($i-9)&15],@X[($i-10)&15]);
88 $T0=@X[$i+3] if ($i<11);
90 $code.=<<___ if ($i<16);
92 rev @X[$i],@X[$i] // $i
95 $code.=<<___ if ($i<13 && ($i&1));
96 ldp @X[$i+1],@X[$i+2],[$inp],#2*$SZ
98 $code.=<<___ if ($i==13);
99 ldp @X[14],@X[15],[$inp]
101 $code.=<<___ if ($i>=14);
102 ldr @X[($i-11)&15],[sp,#`$SZ*(($i-11)%4)`]
104 $code.=<<___ if ($i>0 && $i<16);
105 add $a,$a,$t1 // h+=Sigma0(a)
107 $code.=<<___ if ($i>=11);
108 str @X[($i-8)&15],[sp,#`$SZ*(($i-8)%4)`]
110 # While ARMv8 specifies merged rotate-n-logical operation such as
111 # 'eor x,y,z,ror#n', it was found to negatively affect performance
112 # on Apple A7. The reason seems to be that it requires even 'y' to
113 # be available earlier. This means that such merged instruction is
114 # not necessarily best choice on critical path... On the other hand
115 # Cortex-A5x handles merged instructions much better than disjoint
116 # rotate and logical... See (**) footnote above.
117 $code.=<<___ if ($i<15);
118 ror $t0,$e,#$Sigma1[0]
119 add $h,$h,$t2 // h+=K[i]
120 eor $T0,$e,$e,ror#`$Sigma1[2]-$Sigma1[1]`
123 add $h,$h,@X[$i&15] // h+=X[i]
124 orr $t1,$t1,$t2 // Ch(e,f,g)
125 eor $t2,$a,$b // a^b, b^c in next round
126 eor $t0,$t0,$T0,ror#$Sigma1[1] // Sigma1(e)
127 ror $T0,$a,#$Sigma0[0]
128 add $h,$h,$t1 // h+=Ch(e,f,g)
129 eor $t1,$a,$a,ror#`$Sigma0[2]-$Sigma0[1]`
130 add $h,$h,$t0 // h+=Sigma1(e)
131 and $t3,$t3,$t2 // (b^c)&=(a^b)
133 eor $t3,$t3,$b // Maj(a,b,c)
134 eor $t1,$T0,$t1,ror#$Sigma0[1] // Sigma0(a)
135 add $h,$h,$t3 // h+=Maj(a,b,c)
136 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round
137 //add $h,$h,$t1 // h+=Sigma0(a)
139 $code.=<<___ if ($i>=15);
140 ror $t0,$e,#$Sigma1[0]
141 add $h,$h,$t2 // h+=K[i]
142 ror $T1,@X[($j+1)&15],#$sigma0[0]
144 ror $T2,@X[($j+14)&15],#$sigma1[0]
146 ror $T0,$a,#$Sigma0[0]
147 add $h,$h,@X[$i&15] // h+=X[i]
148 eor $t0,$t0,$e,ror#$Sigma1[1]
149 eor $T1,$T1,@X[($j+1)&15],ror#$sigma0[1]
150 orr $t1,$t1,$t2 // Ch(e,f,g)
151 eor $t2,$a,$b // a^b, b^c in next round
152 eor $t0,$t0,$e,ror#$Sigma1[2] // Sigma1(e)
153 eor $T0,$T0,$a,ror#$Sigma0[1]
154 add $h,$h,$t1 // h+=Ch(e,f,g)
155 and $t3,$t3,$t2 // (b^c)&=(a^b)
156 eor $T2,$T2,@X[($j+14)&15],ror#$sigma1[1]
157 eor $T1,$T1,@X[($j+1)&15],lsr#$sigma0[2] // sigma0(X[i+1])
158 add $h,$h,$t0 // h+=Sigma1(e)
159 eor $t3,$t3,$b // Maj(a,b,c)
160 eor $t1,$T0,$a,ror#$Sigma0[2] // Sigma0(a)
161 eor $T2,$T2,@X[($j+14)&15],lsr#$sigma1[2] // sigma1(X[i+14])
162 add @X[$j],@X[$j],@X[($j+9)&15]
164 add $h,$h,$t3 // h+=Maj(a,b,c)
165 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round
166 add @X[$j],@X[$j],$T1
167 add $h,$h,$t1 // h+=Sigma0(a)
168 add @X[$j],@X[$j],$T2
175 # include "arm_arch.h"
180 .extern OPENSSL_armcap_P
182 .type $func,%function
186 $code.=<<___ if ($SZ==4);
189 ldrsw x16,.LOPENSSL_armcap_P
191 ldr x16,.LOPENSSL_armcap_P
193 adr x17,.LOPENSSL_armcap_P
196 tst w16,#ARMV8_SHA256
201 stp x29,x30,[sp,#-128]!
211 ldp $A,$B,[$ctx] // load context
212 ldp $C,$D,[$ctx,#2*$SZ]
213 ldp $E,$F,[$ctx,#4*$SZ]
214 add $num,$inp,$num,lsl#`log(16*$SZ)/log(2)` // end of input
215 ldp $G,$H,[$ctx,#6*$SZ]
217 stp $ctx,$num,[x29,#96]
220 ldp @X[0],@X[1],[$inp],#2*$SZ
221 ldr $t2,[$Ktbl],#$SZ // *K++
222 eor $t3,$B,$C // magic seed
225 for ($i=0;$i<16;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); }
226 $code.=".Loop_16_xx:\n";
227 for (;$i<32;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); }
231 ldp $ctx,$num,[x29,#96]
233 sub $Ktbl,$Ktbl,#`$SZ*($rounds+1)` // rewind
235 ldp @X[0],@X[1],[$ctx]
236 ldp @X[2],@X[3],[$ctx,#2*$SZ]
237 add $inp,$inp,#14*$SZ // advance input pointer
238 ldp @X[4],@X[5],[$ctx,#4*$SZ]
240 ldp @X[6],@X[7],[$ctx,#6*$SZ]
247 stp $C,$D,[$ctx,#2*$SZ]
251 stp $E,$F,[$ctx,#4*$SZ]
252 stp $G,$H,[$ctx,#6*$SZ]
255 ldp x19,x20,[x29,#16]
257 ldp x21,x22,[x29,#32]
258 ldp x23,x24,[x29,#48]
259 ldp x25,x26,[x29,#64]
260 ldp x27,x28,[x29,#80]
261 ldp x29,x30,[sp],#128
266 .type .LK$BITS,%object
269 $code.=<<___ if ($SZ==8);
270 .quad 0x428a2f98d728ae22,0x7137449123ef65cd
271 .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
272 .quad 0x3956c25bf348b538,0x59f111f1b605d019
273 .quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118
274 .quad 0xd807aa98a3030242,0x12835b0145706fbe
275 .quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
276 .quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1
277 .quad 0x9bdc06a725c71235,0xc19bf174cf692694
278 .quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3
279 .quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
280 .quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483
281 .quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5
282 .quad 0x983e5152ee66dfab,0xa831c66d2db43210
283 .quad 0xb00327c898fb213f,0xbf597fc7beef0ee4
284 .quad 0xc6e00bf33da88fc2,0xd5a79147930aa725
285 .quad 0x06ca6351e003826f,0x142929670a0e6e70
286 .quad 0x27b70a8546d22ffc,0x2e1b21385c26c926
287 .quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df
288 .quad 0x650a73548baf63de,0x766a0abb3c77b2a8
289 .quad 0x81c2c92e47edaee6,0x92722c851482353b
290 .quad 0xa2bfe8a14cf10364,0xa81a664bbc423001
291 .quad 0xc24b8b70d0f89791,0xc76c51a30654be30
292 .quad 0xd192e819d6ef5218,0xd69906245565a910
293 .quad 0xf40e35855771202a,0x106aa07032bbd1b8
294 .quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53
295 .quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
296 .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
297 .quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
298 .quad 0x748f82ee5defb2fc,0x78a5636f43172f60
299 .quad 0x84c87814a1f0ab72,0x8cc702081a6439ec
300 .quad 0x90befffa23631e28,0xa4506cebde82bde9
301 .quad 0xbef9a3f7b2c67915,0xc67178f2e372532b
302 .quad 0xca273eceea26619c,0xd186b8c721c0c207
303 .quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
304 .quad 0x06f067aa72176fba,0x0a637dc5a2c898a6
305 .quad 0x113f9804bef90dae,0x1b710b35131c471b
306 .quad 0x28db77f523047d84,0x32caab7b40c72493
307 .quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
308 .quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a
309 .quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817
310 .quad 0 // terminator
312 $code.=<<___ if ($SZ==4);
313 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
314 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
315 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
316 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
317 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
318 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
319 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
320 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
321 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
322 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
323 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
324 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
325 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
326 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
327 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
328 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
332 .size .LK$BITS,.-.LK$BITS
337 .long OPENSSL_armcap_P-.
339 .quad OPENSSL_armcap_P-.
342 .asciz "SHA$BITS block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
349 my ($ABCD,$EFGH,$abcd)=map("v$_.16b",(0..2));
350 my @MSG=map("v$_.16b",(4..7));
351 my ($W0,$W1)=("v16.4s","v17.4s");
352 my ($ABCD_SAVE,$EFGH_SAVE)=("v18.16b","v19.16b");
356 .type sha256_block_armv8,%function
360 stp x29,x30,[sp,#-16]!
363 ld1.32 {$ABCD,$EFGH},[$ctx]
367 ld1 {@MSG[0]-@MSG[3]},[$inp],#64
369 ld1.32 {$W0},[$Ktbl],#16
370 rev32 @MSG[0],@MSG[0]
371 rev32 @MSG[1],@MSG[1]
372 rev32 @MSG[2],@MSG[2]
373 rev32 @MSG[3],@MSG[3]
374 orr $ABCD_SAVE,$ABCD,$ABCD // offload
375 orr $EFGH_SAVE,$EFGH,$EFGH
377 for($i=0;$i<12;$i++) {
379 ld1.32 {$W1},[$Ktbl],#16
380 add.i32 $W0,$W0,@MSG[0]
381 sha256su0 @MSG[0],@MSG[1]
382 orr $abcd,$ABCD,$ABCD
383 sha256h $ABCD,$EFGH,$W0
384 sha256h2 $EFGH,$abcd,$W0
385 sha256su1 @MSG[0],@MSG[2],@MSG[3]
387 ($W0,$W1)=($W1,$W0); push(@MSG,shift(@MSG));
390 ld1.32 {$W1},[$Ktbl],#16
391 add.i32 $W0,$W0,@MSG[0]
392 orr $abcd,$ABCD,$ABCD
393 sha256h $ABCD,$EFGH,$W0
394 sha256h2 $EFGH,$abcd,$W0
396 ld1.32 {$W0},[$Ktbl],#16
397 add.i32 $W1,$W1,@MSG[1]
398 orr $abcd,$ABCD,$ABCD
399 sha256h $ABCD,$EFGH,$W1
400 sha256h2 $EFGH,$abcd,$W1
403 add.i32 $W0,$W0,@MSG[2]
404 sub $Ktbl,$Ktbl,#$rounds*$SZ-16 // rewind
405 orr $abcd,$ABCD,$ABCD
406 sha256h $ABCD,$EFGH,$W0
407 sha256h2 $EFGH,$abcd,$W0
409 add.i32 $W1,$W1,@MSG[3]
410 orr $abcd,$ABCD,$ABCD
411 sha256h $ABCD,$EFGH,$W1
412 sha256h2 $EFGH,$abcd,$W1
414 add.i32 $ABCD,$ABCD,$ABCD_SAVE
415 add.i32 $EFGH,$EFGH,$EFGH_SAVE
419 st1.32 {$ABCD,$EFGH},[$ctx]
423 .size sha256_block_armv8,.-sha256_block_armv8
430 .comm OPENSSL_armcap_P,4,4
435 "sha256h" => 0x5e004000, "sha256h2" => 0x5e005000,
436 "sha256su0" => 0x5e282800, "sha256su1" => 0x5e006000 );
439 my ($mnemonic,$arg)=@_;
441 $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
443 sprintf ".inst\t0x%08x\t//%s %s",
444 $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
452 last if (!s/^#/\/\// and !/^$/);
457 foreach(split("\n",$code)) {
459 s/\`([^\`]*)\`/eval($1)/geo;
461 s/\b(sha256\w+)\s+([qv].*)/unsha256($1,$2)/geo;
463 s/\.\w?32\b//o and s/\.16b/\.4s/go;
464 m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;