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
10 # ====================================================================
11 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
12 # project. The module is, however, dual licensed under OpenSSL and
13 # CRYPTOGAMS licenses depending on where you obtain it. For further
14 # details see http://www.openssl.org/~appro/cryptogams/.
15 # ====================================================================
17 # SHA256/512 for ARMv8.
19 # Performance in cycles per processed byte and improvement coefficient
20 # over code generated with "default" compiler:
22 # SHA256-hw SHA256(*) SHA512
23 # Apple A7 1.97 10.5 (+33%) 6.73 (-1%(**))
24 # Cortex-A53 2.38 15.5 (+115%) 10.0 (+150%(***))
25 # Cortex-A57 2.31 11.6 (+86%) 7.51 (+260%(***))
26 # Denver 2.01 10.5 (+26%) 6.70 (+8%)
27 # X-Gene 20.0 (+100%) 12.8 (+300%(***))
28 # Mongoose 2.36 13.0 (+50%) 8.36 (+33%)
30 # (*) Software SHA256 results are of lesser relevance, presented
31 # mostly for informational purposes.
32 # (**) The result is a trade-off: it's possible to improve it by
33 # 10% (or by 1 cycle per round), but at the cost of 20% loss
34 # on Cortex-A53 (or by 4 cycles per round).
35 # (***) Super-impressive coefficients over gcc-generated code are
36 # indication of some compiler "pathology", most notably code
37 # generated with -mgeneral-regs-only is significanty faster
38 # and the gap is only 40-90%.
43 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
44 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
45 ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
46 die "can't locate arm-xlate.pl";
48 open OUT,"| \"$^X\" $xlate $flavour $output";
51 if ($output =~ /512/) {
71 $func="sha${BITS}_block_data_order";
73 ($ctx,$inp,$num,$Ktbl)=map("x$_",(0..2,30));
75 @X=map("$reg_t$_",(3..15,0..2));
76 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("$reg_t$_",(20..27));
77 ($t0,$t1,$t2,$t3)=map("$reg_t$_",(16,17,19,28));
80 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
82 my ($T0,$T1,$T2)=(@X[($i-8)&15],@X[($i-9)&15],@X[($i-10)&15]);
83 $T0=@X[$i+3] if ($i<11);
85 $code.=<<___ if ($i<16);
87 rev @X[$i],@X[$i] // $i
90 $code.=<<___ if ($i<13 && ($i&1));
91 ldp @X[$i+1],@X[$i+2],[$inp],#2*$SZ
93 $code.=<<___ if ($i==13);
94 ldp @X[14],@X[15],[$inp]
96 $code.=<<___ if ($i>=14);
97 ldr @X[($i-11)&15],[sp,#`$SZ*(($i-11)%4)`]
99 $code.=<<___ if ($i>0 && $i<16);
100 add $a,$a,$t1 // h+=Sigma0(a)
102 $code.=<<___ if ($i>=11);
103 str @X[($i-8)&15],[sp,#`$SZ*(($i-8)%4)`]
105 # While ARMv8 specifies merged rotate-n-logical operation such as
106 # 'eor x,y,z,ror#n', it was found to negatively affect performance
107 # on Apple A7. The reason seems to be that it requires even 'y' to
108 # be available earlier. This means that such merged instruction is
109 # not necessarily best choice on critical path... On the other hand
110 # Cortex-A5x handles merged instructions much better than disjoint
111 # rotate and logical... See (**) footnote above.
112 $code.=<<___ if ($i<15);
113 ror $t0,$e,#$Sigma1[0]
114 add $h,$h,$t2 // h+=K[i]
115 eor $T0,$e,$e,ror#`$Sigma1[2]-$Sigma1[1]`
118 add $h,$h,@X[$i&15] // h+=X[i]
119 orr $t1,$t1,$t2 // Ch(e,f,g)
120 eor $t2,$a,$b // a^b, b^c in next round
121 eor $t0,$t0,$T0,ror#$Sigma1[1] // Sigma1(e)
122 ror $T0,$a,#$Sigma0[0]
123 add $h,$h,$t1 // h+=Ch(e,f,g)
124 eor $t1,$a,$a,ror#`$Sigma0[2]-$Sigma0[1]`
125 add $h,$h,$t0 // h+=Sigma1(e)
126 and $t3,$t3,$t2 // (b^c)&=(a^b)
128 eor $t3,$t3,$b // Maj(a,b,c)
129 eor $t1,$T0,$t1,ror#$Sigma0[1] // Sigma0(a)
130 add $h,$h,$t3 // h+=Maj(a,b,c)
131 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round
132 //add $h,$h,$t1 // h+=Sigma0(a)
134 $code.=<<___ if ($i>=15);
135 ror $t0,$e,#$Sigma1[0]
136 add $h,$h,$t2 // h+=K[i]
137 ror $T1,@X[($j+1)&15],#$sigma0[0]
139 ror $T2,@X[($j+14)&15],#$sigma1[0]
141 ror $T0,$a,#$Sigma0[0]
142 add $h,$h,@X[$i&15] // h+=X[i]
143 eor $t0,$t0,$e,ror#$Sigma1[1]
144 eor $T1,$T1,@X[($j+1)&15],ror#$sigma0[1]
145 orr $t1,$t1,$t2 // Ch(e,f,g)
146 eor $t2,$a,$b // a^b, b^c in next round
147 eor $t0,$t0,$e,ror#$Sigma1[2] // Sigma1(e)
148 eor $T0,$T0,$a,ror#$Sigma0[1]
149 add $h,$h,$t1 // h+=Ch(e,f,g)
150 and $t3,$t3,$t2 // (b^c)&=(a^b)
151 eor $T2,$T2,@X[($j+14)&15],ror#$sigma1[1]
152 eor $T1,$T1,@X[($j+1)&15],lsr#$sigma0[2] // sigma0(X[i+1])
153 add $h,$h,$t0 // h+=Sigma1(e)
154 eor $t3,$t3,$b // Maj(a,b,c)
155 eor $t1,$T0,$a,ror#$Sigma0[2] // Sigma0(a)
156 eor $T2,$T2,@X[($j+14)&15],lsr#$sigma1[2] // sigma1(X[i+14])
157 add @X[$j],@X[$j],@X[($j+9)&15]
159 add $h,$h,$t3 // h+=Maj(a,b,c)
160 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round
161 add @X[$j],@X[$j],$T1
162 add $h,$h,$t1 // h+=Sigma0(a)
163 add @X[$j],@X[$j],$T2
169 #include "arm_arch.h"
173 .extern OPENSSL_armcap_P
175 .type $func,%function
179 $code.=<<___ if ($SZ==4);
181 ldrsw x16,.LOPENSSL_armcap_P
183 ldr x16,.LOPENSSL_armcap_P
185 adr x17,.LOPENSSL_armcap_P
188 tst w16,#ARMV8_SHA256
192 stp x29,x30,[sp,#-128]!
202 ldp $A,$B,[$ctx] // load context
203 ldp $C,$D,[$ctx,#2*$SZ]
204 ldp $E,$F,[$ctx,#4*$SZ]
205 add $num,$inp,$num,lsl#`log(16*$SZ)/log(2)` // end of input
206 ldp $G,$H,[$ctx,#6*$SZ]
208 stp $ctx,$num,[x29,#96]
211 ldp @X[0],@X[1],[$inp],#2*$SZ
212 ldr $t2,[$Ktbl],#$SZ // *K++
213 eor $t3,$B,$C // magic seed
216 for ($i=0;$i<16;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); }
217 $code.=".Loop_16_xx:\n";
218 for (;$i<32;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); }
222 ldp $ctx,$num,[x29,#96]
224 sub $Ktbl,$Ktbl,#`$SZ*($rounds+1)` // rewind
226 ldp @X[0],@X[1],[$ctx]
227 ldp @X[2],@X[3],[$ctx,#2*$SZ]
228 add $inp,$inp,#14*$SZ // advance input pointer
229 ldp @X[4],@X[5],[$ctx,#4*$SZ]
231 ldp @X[6],@X[7],[$ctx,#6*$SZ]
238 stp $C,$D,[$ctx,#2*$SZ]
242 stp $E,$F,[$ctx,#4*$SZ]
243 stp $G,$H,[$ctx,#6*$SZ]
246 ldp x19,x20,[x29,#16]
248 ldp x21,x22,[x29,#32]
249 ldp x23,x24,[x29,#48]
250 ldp x25,x26,[x29,#64]
251 ldp x27,x28,[x29,#80]
252 ldp x29,x30,[sp],#128
257 .type .LK$BITS,%object
260 $code.=<<___ if ($SZ==8);
261 .quad 0x428a2f98d728ae22,0x7137449123ef65cd
262 .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
263 .quad 0x3956c25bf348b538,0x59f111f1b605d019
264 .quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118
265 .quad 0xd807aa98a3030242,0x12835b0145706fbe
266 .quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
267 .quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1
268 .quad 0x9bdc06a725c71235,0xc19bf174cf692694
269 .quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3
270 .quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
271 .quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483
272 .quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5
273 .quad 0x983e5152ee66dfab,0xa831c66d2db43210
274 .quad 0xb00327c898fb213f,0xbf597fc7beef0ee4
275 .quad 0xc6e00bf33da88fc2,0xd5a79147930aa725
276 .quad 0x06ca6351e003826f,0x142929670a0e6e70
277 .quad 0x27b70a8546d22ffc,0x2e1b21385c26c926
278 .quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df
279 .quad 0x650a73548baf63de,0x766a0abb3c77b2a8
280 .quad 0x81c2c92e47edaee6,0x92722c851482353b
281 .quad 0xa2bfe8a14cf10364,0xa81a664bbc423001
282 .quad 0xc24b8b70d0f89791,0xc76c51a30654be30
283 .quad 0xd192e819d6ef5218,0xd69906245565a910
284 .quad 0xf40e35855771202a,0x106aa07032bbd1b8
285 .quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53
286 .quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
287 .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
288 .quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
289 .quad 0x748f82ee5defb2fc,0x78a5636f43172f60
290 .quad 0x84c87814a1f0ab72,0x8cc702081a6439ec
291 .quad 0x90befffa23631e28,0xa4506cebde82bde9
292 .quad 0xbef9a3f7b2c67915,0xc67178f2e372532b
293 .quad 0xca273eceea26619c,0xd186b8c721c0c207
294 .quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
295 .quad 0x06f067aa72176fba,0x0a637dc5a2c898a6
296 .quad 0x113f9804bef90dae,0x1b710b35131c471b
297 .quad 0x28db77f523047d84,0x32caab7b40c72493
298 .quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
299 .quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a
300 .quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817
301 .quad 0 // terminator
303 $code.=<<___ if ($SZ==4);
304 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
305 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
306 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
307 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
308 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
309 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
310 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
311 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
312 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
313 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
314 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
315 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
316 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
317 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
318 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
319 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
323 .size .LK$BITS,.-.LK$BITS
327 .long OPENSSL_armcap_P-.
329 .quad OPENSSL_armcap_P-.
331 .asciz "SHA$BITS block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
338 my ($ABCD,$EFGH,$abcd)=map("v$_.16b",(0..2));
339 my @MSG=map("v$_.16b",(4..7));
340 my ($W0,$W1)=("v16.4s","v17.4s");
341 my ($ABCD_SAVE,$EFGH_SAVE)=("v18.16b","v19.16b");
344 .type sha256_block_armv8,%function
348 stp x29,x30,[sp,#-16]!
351 ld1.32 {$ABCD,$EFGH},[$ctx]
355 ld1 {@MSG[0]-@MSG[3]},[$inp],#64
357 ld1.32 {$W0},[$Ktbl],#16
358 rev32 @MSG[0],@MSG[0]
359 rev32 @MSG[1],@MSG[1]
360 rev32 @MSG[2],@MSG[2]
361 rev32 @MSG[3],@MSG[3]
362 orr $ABCD_SAVE,$ABCD,$ABCD // offload
363 orr $EFGH_SAVE,$EFGH,$EFGH
365 for($i=0;$i<12;$i++) {
367 ld1.32 {$W1},[$Ktbl],#16
368 add.i32 $W0,$W0,@MSG[0]
369 sha256su0 @MSG[0],@MSG[1]
370 orr $abcd,$ABCD,$ABCD
371 sha256h $ABCD,$EFGH,$W0
372 sha256h2 $EFGH,$abcd,$W0
373 sha256su1 @MSG[0],@MSG[2],@MSG[3]
375 ($W0,$W1)=($W1,$W0); push(@MSG,shift(@MSG));
378 ld1.32 {$W1},[$Ktbl],#16
379 add.i32 $W0,$W0,@MSG[0]
380 orr $abcd,$ABCD,$ABCD
381 sha256h $ABCD,$EFGH,$W0
382 sha256h2 $EFGH,$abcd,$W0
384 ld1.32 {$W0},[$Ktbl],#16
385 add.i32 $W1,$W1,@MSG[1]
386 orr $abcd,$ABCD,$ABCD
387 sha256h $ABCD,$EFGH,$W1
388 sha256h2 $EFGH,$abcd,$W1
391 add.i32 $W0,$W0,@MSG[2]
392 sub $Ktbl,$Ktbl,#$rounds*$SZ-16 // rewind
393 orr $abcd,$ABCD,$ABCD
394 sha256h $ABCD,$EFGH,$W0
395 sha256h2 $EFGH,$abcd,$W0
397 add.i32 $W1,$W1,@MSG[3]
398 orr $abcd,$ABCD,$ABCD
399 sha256h $ABCD,$EFGH,$W1
400 sha256h2 $EFGH,$abcd,$W1
402 add.i32 $ABCD,$ABCD,$ABCD_SAVE
403 add.i32 $EFGH,$EFGH,$EFGH_SAVE
407 st1.32 {$ABCD,$EFGH},[$ctx]
411 .size sha256_block_armv8,.-sha256_block_armv8
416 .comm OPENSSL_armcap_P,4,4
420 "sha256h" => 0x5e004000, "sha256h2" => 0x5e005000,
421 "sha256su0" => 0x5e282800, "sha256su1" => 0x5e006000 );
424 my ($mnemonic,$arg)=@_;
426 $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
428 sprintf ".inst\t0x%08x\t//%s %s",
429 $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
434 foreach(split("\n",$code)) {
436 s/\`([^\`]*)\`/eval($1)/geo;
438 s/\b(sha256\w+)\s+([qv].*)/unsha256($1,$2)/geo;
440 s/\.\w?32\b//o and s/\.16b/\.4s/go;
441 m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;