3 # ====================================================================
4 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
5 # project. The module is, however, dual licensed under OpenSSL and
6 # CRYPTOGAMS licenses depending on where you obtain it. For further
7 # details see http://www.openssl.org/~appro/cryptogams/.
8 # ====================================================================
10 # SHA256/512 for ARMv8.
12 # Performance in cycles per processed byte and improvement coefficient
13 # over code generated with "default" compiler:
15 # SHA256-hw SHA256(*) SHA512
16 # Apple A7 1.97 10.5 (+33%) 6.73 (-1%(**))
17 # Cortex-A5x n/a n/a n/a
19 # (*) Software SHA256 results are of lesser relevance, presented
20 # mostly for informational purposes.
21 # (**) The result is a trade-off: it's possible to improve it by
22 # 10%, but at the cost of 20% loss on Cortex-A5x.
26 open STDOUT,">$output";
28 if ($output =~ /512/) {
48 $func="sha${BITS}_block_data_order";
50 ($ctx,$inp,$num,$Ktbl)=map("x$_",(0..2,30));
52 @X=map("$reg_t$_",(3..15,0..2));
53 @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("$reg_t$_",(20..27));
54 ($t0,$t1,$t2,$t3)=map("$reg_t$_",(16,17,19,28));
57 my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
59 my ($T0,$T1,$T2)=(@X[($i-8)&15],@X[($i-9)&15],@X[($i-10)&15]);
60 $T0=@X[$i+3] if ($i<11);
62 $code.=<<___ if ($i<16);
64 rev @X[$i],@X[$i] // $i
67 $code.=<<___ if ($i<13 && ($i&1));
68 ldp @X[$i+1],@X[$i+2],[$inp],#2*$SZ
70 $code.=<<___ if ($i==13);
71 ldp @X[14],@X[15],[$inp]
73 $code.=<<___ if ($i>=14);
74 ldr @X[($i-11)&15],[sp,#`$SZ*(($i-11)%4)`]
76 $code.=<<___ if ($i>0 && $i<16);
77 add $a,$a,$t1 // h+=Sigma0(a)
79 $code.=<<___ if ($i>=11);
80 str @X[($i-8)&15],[sp,#`$SZ*(($i-8)%4)`]
82 # While ARMv8 specifies merged rotate-n-logical operation such as
83 # 'eor x,y,z,ror#n', it was found to negatively affect performance
84 # on Apple A7. The reason seems to be that it requires even 'y' to
85 # be available earlier. This means that such merged instruction is
86 # not necessarily best choice on critical path... On the other hand
87 # Cortex-A5x handles merged instructions much better than disjoint
88 # rotate and logical... See (**) footnote above.
89 $code.=<<___ if ($i<15);
90 ror $t0,$e,#$Sigma1[0]
91 add $h,$h,$t2 // h+=K[i]
92 eor $T0,$e,$e,ror#`$Sigma1[2]-$Sigma1[1]`
95 add $h,$h,@X[$i&15] // h+=X[i]
96 orr $t1,$t1,$t2 // Ch(e,f,g)
97 eor $t2,$a,$b // a^b, b^c in next round
98 eor $t0,$t0,$T0,ror#$Sigma1[1] // Sigma1(e)
99 ror $T0,$a,#$Sigma0[0]
100 add $h,$h,$t1 // h+=Ch(e,f,g)
101 eor $t1,$a,$a,ror#`$Sigma0[2]-$Sigma0[1]`
102 add $h,$h,$t0 // h+=Sigma1(e)
103 and $t3,$t3,$t2 // (b^c)&=(a^b)
105 eor $t3,$t3,$b // Maj(a,b,c)
106 eor $t1,$T0,$t1,ror#$Sigma0[1] // Sigma0(a)
107 add $h,$h,$t3 // h+=Maj(a,b,c)
108 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round
109 //add $h,$h,$t1 // h+=Sigma0(a)
111 $code.=<<___ if ($i>=15);
112 ror $t0,$e,#$Sigma1[0]
113 add $h,$h,$t2 // h+=K[i]
114 ror $T1,@X[($j+1)&15],#$sigma0[0]
116 ror $T2,@X[($j+14)&15],#$sigma1[0]
118 ror $T0,$a,#$Sigma0[0]
119 add $h,$h,@X[$i&15] // h+=X[i]
120 eor $t0,$t0,$e,ror#$Sigma1[1]
121 eor $T1,$T1,@X[($j+1)&15],ror#$sigma0[1]
122 orr $t1,$t1,$t2 // Ch(e,f,g)
123 eor $t2,$a,$b // a^b, b^c in next round
124 eor $t0,$t0,$e,ror#$Sigma1[2] // Sigma1(e)
125 eor $T0,$T0,$a,ror#$Sigma0[1]
126 add $h,$h,$t1 // h+=Ch(e,f,g)
127 and $t3,$t3,$t2 // (b^c)&=(a^b)
128 eor $T2,$T2,@X[($j+14)&15],ror#$sigma1[1]
129 eor $T1,$T1,@X[($j+1)&15],lsr#$sigma0[2] // sigma0(X[i+1])
130 add $h,$h,$t0 // h+=Sigma1(e)
131 eor $t3,$t3,$b // Maj(a,b,c)
132 eor $t1,$T0,$a,ror#$Sigma0[2] // Sigma0(a)
133 eor $T2,$T2,@X[($j+14)&15],lsr#$sigma1[2] // sigma1(X[i+14])
134 add @X[$j],@X[$j],@X[($j+9)&15]
136 add $h,$h,$t3 // h+=Maj(a,b,c)
137 ldr $t3,[$Ktbl],#$SZ // *K++, $t2 in next round
138 add @X[$j],@X[$j],$T1
139 add $h,$h,$t1 // h+=Sigma0(a)
140 add @X[$j],@X[$j],$T2
146 #include "arm_arch.h"
151 .type $func,%function
155 $code.=<<___ if ($SZ==4);
156 ldr x16,.LOPENSSL_armcap_P
157 adr x17,.LOPENSSL_armcap_P
160 tst w16,#ARMV8_SHA256
164 stp x29,x30,[sp,#-128]!
174 ldp $A,$B,[$ctx] // load context
175 ldp $C,$D,[$ctx,#2*$SZ]
176 ldp $E,$F,[$ctx,#4*$SZ]
177 add $num,$inp,$num,lsl#`log(16*$SZ)/log(2)` // end of input
178 ldp $G,$H,[$ctx,#6*$SZ]
180 stp $ctx,$num,[x29,#96]
183 ldp @X[0],@X[1],[$inp],#2*$SZ
184 ldr $t2,[$Ktbl],#$SZ // *K++
185 eor $t3,$B,$C // magic seed
188 for ($i=0;$i<16;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); }
189 $code.=".Loop_16_xx:\n";
190 for (;$i<32;$i++) { &BODY_00_xx($i,@V); unshift(@V,pop(@V)); }
194 ldp $ctx,$num,[x29,#96]
196 sub $Ktbl,$Ktbl,#`$SZ*($rounds+1)` // rewind
198 ldp @X[0],@X[1],[$ctx]
199 ldp @X[2],@X[3],[$ctx,#2*$SZ]
200 add $inp,$inp,#14*$SZ // advance input pointer
201 ldp @X[4],@X[5],[$ctx,#4*$SZ]
203 ldp @X[6],@X[7],[$ctx,#6*$SZ]
210 stp $C,$D,[$ctx,#2*$SZ]
214 stp $E,$F,[$ctx,#4*$SZ]
215 stp $G,$H,[$ctx,#6*$SZ]
218 ldp x19,x20,[x29,#16]
220 ldp x21,x22,[x29,#32]
221 ldp x23,x24,[x29,#48]
222 ldp x25,x26,[x29,#64]
223 ldp x27,x28,[x29,#80]
224 ldp x29,x30,[sp],#128
232 $code.=<<___ if ($SZ==8);
233 .quad 0x428a2f98d728ae22,0x7137449123ef65cd
234 .quad 0xb5c0fbcfec4d3b2f,0xe9b5dba58189dbbc
235 .quad 0x3956c25bf348b538,0x59f111f1b605d019
236 .quad 0x923f82a4af194f9b,0xab1c5ed5da6d8118
237 .quad 0xd807aa98a3030242,0x12835b0145706fbe
238 .quad 0x243185be4ee4b28c,0x550c7dc3d5ffb4e2
239 .quad 0x72be5d74f27b896f,0x80deb1fe3b1696b1
240 .quad 0x9bdc06a725c71235,0xc19bf174cf692694
241 .quad 0xe49b69c19ef14ad2,0xefbe4786384f25e3
242 .quad 0x0fc19dc68b8cd5b5,0x240ca1cc77ac9c65
243 .quad 0x2de92c6f592b0275,0x4a7484aa6ea6e483
244 .quad 0x5cb0a9dcbd41fbd4,0x76f988da831153b5
245 .quad 0x983e5152ee66dfab,0xa831c66d2db43210
246 .quad 0xb00327c898fb213f,0xbf597fc7beef0ee4
247 .quad 0xc6e00bf33da88fc2,0xd5a79147930aa725
248 .quad 0x06ca6351e003826f,0x142929670a0e6e70
249 .quad 0x27b70a8546d22ffc,0x2e1b21385c26c926
250 .quad 0x4d2c6dfc5ac42aed,0x53380d139d95b3df
251 .quad 0x650a73548baf63de,0x766a0abb3c77b2a8
252 .quad 0x81c2c92e47edaee6,0x92722c851482353b
253 .quad 0xa2bfe8a14cf10364,0xa81a664bbc423001
254 .quad 0xc24b8b70d0f89791,0xc76c51a30654be30
255 .quad 0xd192e819d6ef5218,0xd69906245565a910
256 .quad 0xf40e35855771202a,0x106aa07032bbd1b8
257 .quad 0x19a4c116b8d2d0c8,0x1e376c085141ab53
258 .quad 0x2748774cdf8eeb99,0x34b0bcb5e19b48a8
259 .quad 0x391c0cb3c5c95a63,0x4ed8aa4ae3418acb
260 .quad 0x5b9cca4f7763e373,0x682e6ff3d6b2b8a3
261 .quad 0x748f82ee5defb2fc,0x78a5636f43172f60
262 .quad 0x84c87814a1f0ab72,0x8cc702081a6439ec
263 .quad 0x90befffa23631e28,0xa4506cebde82bde9
264 .quad 0xbef9a3f7b2c67915,0xc67178f2e372532b
265 .quad 0xca273eceea26619c,0xd186b8c721c0c207
266 .quad 0xeada7dd6cde0eb1e,0xf57d4f7fee6ed178
267 .quad 0x06f067aa72176fba,0x0a637dc5a2c898a6
268 .quad 0x113f9804bef90dae,0x1b710b35131c471b
269 .quad 0x28db77f523047d84,0x32caab7b40c72493
270 .quad 0x3c9ebe0a15c9bebc,0x431d67c49c100d4c
271 .quad 0x4cc5d4becb3e42b6,0x597f299cfc657e2a
272 .quad 0x5fcb6fab3ad6faec,0x6c44198c4a475817
273 .quad 0 // terminator
275 $code.=<<___ if ($SZ==4);
276 .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5
277 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5
278 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3
279 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174
280 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc
281 .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da
282 .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7
283 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967
284 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13
285 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85
286 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3
287 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070
288 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5
289 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3
290 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208
291 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
295 .size K$BITS,.-K$BITS
298 .quad OPENSSL_armcap_P-.
299 .asciz "SHA$BITS block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
306 my ($ABCD,$EFGH,$abcd)=map("v$_.16b",(0..2));
307 my @MSG=map("v$_.16b",(4..7));
308 my ($W0,$W1)=("v16.4s","v17.4s");
309 my ($ABCD_SAVE,$EFGH_SAVE)=("v18.16b","v19.16b");
312 .type sha256_block_armv8,%function
316 stp x29,x30,[sp,#-16]!
319 ld1.32 {$ABCD,$EFGH},[$ctx]
323 ld1 {@MSG[0]-@MSG[3]},[$inp],#64
325 ld1.32 {$W0},[$Ktbl],#16
326 rev32 @MSG[0],@MSG[0]
327 rev32 @MSG[1],@MSG[1]
328 rev32 @MSG[2],@MSG[2]
329 rev32 @MSG[3],@MSG[3]
330 orr $ABCD_SAVE,$ABCD,$ABCD // offload
331 orr $EFGH_SAVE,$EFGH,$EFGH
333 for($i=0;$i<12;$i++) {
335 ld1.32 {$W1},[$Ktbl],#16
336 add.i32 $W0,$W0,@MSG[0]
337 sha256su0 @MSG[0],@MSG[1]
338 orr $abcd,$ABCD,$ABCD
339 sha256h $ABCD,$EFGH,$W0
340 sha256h2 $EFGH,$abcd,$W0
341 sha256su1 @MSG[0],@MSG[2],@MSG[3]
343 ($W0,$W1)=($W1,$W0); push(@MSG,shift(@MSG));
346 ld1.32 {$W1},[$Ktbl],#16
347 add.i32 $W0,$W0,@MSG[0]
348 orr $abcd,$ABCD,$ABCD
349 sha256h $ABCD,$EFGH,$W0
350 sha256h2 $EFGH,$abcd,$W0
352 ld1.32 {$W0},[$Ktbl],#16
353 add.i32 $W1,$W1,@MSG[1]
354 orr $abcd,$ABCD,$ABCD
355 sha256h $ABCD,$EFGH,$W1
356 sha256h2 $EFGH,$abcd,$W1
359 add.i32 $W0,$W0,@MSG[2]
360 sub $Ktbl,$Ktbl,#$rounds*$SZ-16 // rewind
361 orr $abcd,$ABCD,$ABCD
362 sha256h $ABCD,$EFGH,$W0
363 sha256h2 $EFGH,$abcd,$W0
365 add.i32 $W1,$W1,@MSG[3]
366 orr $abcd,$ABCD,$ABCD
367 sha256h $ABCD,$EFGH,$W1
368 sha256h2 $EFGH,$abcd,$W1
370 add.i32 $ABCD,$ABCD,$ABCD_SAVE
371 add.i32 $EFGH,$EFGH,$EFGH_SAVE
375 st1.32 {$ABCD,$EFGH},[$ctx]
379 .size sha256_block_armv8,.-sha256_block_armv8
384 .comm OPENSSL_armcap_P,4,4
388 "sha256h" => 0x5e004000, "sha256h2" => 0x5e005000,
389 "sha256su0" => 0x5e282800, "sha256su1" => 0x5e006000 );
392 my ($mnemonic,$arg)=@_;
394 $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
396 sprintf ".inst\t0x%08x\t//%s %s",
397 $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
402 foreach(split("\n",$code)) {
404 s/\`([^\`]*)\`/eval($1)/geo;
406 s/\b(sha256\w+)\s+([qv].*)/unsha256($1,$2)/geo;
408 s/\.\w?32\b//o and s/\.16b/\.4s/go;
409 m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;