Sami Tolvanen | f2f770d | 2015-04-03 18:03:40 +0800 | [diff] [blame] | 1 | #!/usr/bin/env perl |
| 2 | |
| 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 | # |
| 9 | # Permission to use under GPL terms is granted. |
| 10 | # ==================================================================== |
| 11 | |
| 12 | # SHA256 block procedure for ARMv4. May 2007. |
| 13 | |
| 14 | # Performance is ~2x better than gcc 3.4 generated code and in "abso- |
| 15 | # lute" terms is ~2250 cycles per 64-byte block or ~35 cycles per |
| 16 | # byte [on single-issue Xscale PXA250 core]. |
| 17 | |
| 18 | # July 2010. |
| 19 | # |
| 20 | # Rescheduling for dual-issue pipeline resulted in 22% improvement on |
| 21 | # Cortex A8 core and ~20 cycles per processed byte. |
| 22 | |
| 23 | # February 2011. |
| 24 | # |
| 25 | # Profiler-assisted and platform-specific optimization resulted in 16% |
| 26 | # improvement on Cortex A8 core and ~15.4 cycles per processed byte. |
| 27 | |
| 28 | # September 2013. |
| 29 | # |
| 30 | # Add NEON implementation. On Cortex A8 it was measured to process one |
| 31 | # byte in 12.5 cycles or 23% faster than integer-only code. Snapdragon |
| 32 | # S4 does it in 12.5 cycles too, but it's 50% faster than integer-only |
| 33 | # code (meaning that latter performs sub-optimally, nothing was done |
| 34 | # about it). |
| 35 | |
| 36 | # May 2014. |
| 37 | # |
| 38 | # Add ARMv8 code path performing at 2.0 cpb on Apple A7. |
| 39 | |
| 40 | while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} |
| 41 | open STDOUT,">$output"; |
| 42 | |
| 43 | $ctx="r0"; $t0="r0"; |
| 44 | $inp="r1"; $t4="r1"; |
| 45 | $len="r2"; $t1="r2"; |
| 46 | $T1="r3"; $t3="r3"; |
| 47 | $A="r4"; |
| 48 | $B="r5"; |
| 49 | $C="r6"; |
| 50 | $D="r7"; |
| 51 | $E="r8"; |
| 52 | $F="r9"; |
| 53 | $G="r10"; |
| 54 | $H="r11"; |
| 55 | @V=($A,$B,$C,$D,$E,$F,$G,$H); |
| 56 | $t2="r12"; |
| 57 | $Ktbl="r14"; |
| 58 | |
| 59 | @Sigma0=( 2,13,22); |
| 60 | @Sigma1=( 6,11,25); |
| 61 | @sigma0=( 7,18, 3); |
| 62 | @sigma1=(17,19,10); |
| 63 | |
| 64 | sub BODY_00_15 { |
| 65 | my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; |
| 66 | |
| 67 | $code.=<<___ if ($i<16); |
| 68 | #if __ARM_ARCH__>=7 |
| 69 | @ ldr $t1,[$inp],#4 @ $i |
| 70 | # if $i==15 |
| 71 | str $inp,[sp,#17*4] @ make room for $t4 |
| 72 | # endif |
| 73 | eor $t0,$e,$e,ror#`$Sigma1[1]-$Sigma1[0]` |
| 74 | add $a,$a,$t2 @ h+=Maj(a,b,c) from the past |
| 75 | eor $t0,$t0,$e,ror#`$Sigma1[2]-$Sigma1[0]` @ Sigma1(e) |
| 76 | # ifndef __ARMEB__ |
| 77 | rev $t1,$t1 |
| 78 | # endif |
| 79 | #else |
| 80 | @ ldrb $t1,[$inp,#3] @ $i |
| 81 | add $a,$a,$t2 @ h+=Maj(a,b,c) from the past |
| 82 | ldrb $t2,[$inp,#2] |
| 83 | ldrb $t0,[$inp,#1] |
| 84 | orr $t1,$t1,$t2,lsl#8 |
| 85 | ldrb $t2,[$inp],#4 |
| 86 | orr $t1,$t1,$t0,lsl#16 |
| 87 | # if $i==15 |
| 88 | str $inp,[sp,#17*4] @ make room for $t4 |
| 89 | # endif |
| 90 | eor $t0,$e,$e,ror#`$Sigma1[1]-$Sigma1[0]` |
| 91 | orr $t1,$t1,$t2,lsl#24 |
| 92 | eor $t0,$t0,$e,ror#`$Sigma1[2]-$Sigma1[0]` @ Sigma1(e) |
| 93 | #endif |
| 94 | ___ |
| 95 | $code.=<<___; |
| 96 | ldr $t2,[$Ktbl],#4 @ *K256++ |
| 97 | add $h,$h,$t1 @ h+=X[i] |
| 98 | str $t1,[sp,#`$i%16`*4] |
| 99 | eor $t1,$f,$g |
| 100 | add $h,$h,$t0,ror#$Sigma1[0] @ h+=Sigma1(e) |
| 101 | and $t1,$t1,$e |
| 102 | add $h,$h,$t2 @ h+=K256[i] |
| 103 | eor $t1,$t1,$g @ Ch(e,f,g) |
| 104 | eor $t0,$a,$a,ror#`$Sigma0[1]-$Sigma0[0]` |
| 105 | add $h,$h,$t1 @ h+=Ch(e,f,g) |
| 106 | #if $i==31 |
| 107 | and $t2,$t2,#0xff |
| 108 | cmp $t2,#0xf2 @ done? |
| 109 | #endif |
| 110 | #if $i<15 |
| 111 | # if __ARM_ARCH__>=7 |
| 112 | ldr $t1,[$inp],#4 @ prefetch |
| 113 | # else |
| 114 | ldrb $t1,[$inp,#3] |
| 115 | # endif |
| 116 | eor $t2,$a,$b @ a^b, b^c in next round |
| 117 | #else |
| 118 | ldr $t1,[sp,#`($i+2)%16`*4] @ from future BODY_16_xx |
| 119 | eor $t2,$a,$b @ a^b, b^c in next round |
| 120 | ldr $t4,[sp,#`($i+15)%16`*4] @ from future BODY_16_xx |
| 121 | #endif |
| 122 | eor $t0,$t0,$a,ror#`$Sigma0[2]-$Sigma0[0]` @ Sigma0(a) |
| 123 | and $t3,$t3,$t2 @ (b^c)&=(a^b) |
| 124 | add $d,$d,$h @ d+=h |
| 125 | eor $t3,$t3,$b @ Maj(a,b,c) |
| 126 | add $h,$h,$t0,ror#$Sigma0[0] @ h+=Sigma0(a) |
| 127 | @ add $h,$h,$t3 @ h+=Maj(a,b,c) |
| 128 | ___ |
| 129 | ($t2,$t3)=($t3,$t2); |
| 130 | } |
| 131 | |
| 132 | sub BODY_16_XX { |
| 133 | my ($i,$a,$b,$c,$d,$e,$f,$g,$h) = @_; |
| 134 | |
| 135 | $code.=<<___; |
| 136 | @ ldr $t1,[sp,#`($i+1)%16`*4] @ $i |
| 137 | @ ldr $t4,[sp,#`($i+14)%16`*4] |
| 138 | mov $t0,$t1,ror#$sigma0[0] |
| 139 | add $a,$a,$t2 @ h+=Maj(a,b,c) from the past |
| 140 | mov $t2,$t4,ror#$sigma1[0] |
| 141 | eor $t0,$t0,$t1,ror#$sigma0[1] |
| 142 | eor $t2,$t2,$t4,ror#$sigma1[1] |
| 143 | eor $t0,$t0,$t1,lsr#$sigma0[2] @ sigma0(X[i+1]) |
| 144 | ldr $t1,[sp,#`($i+0)%16`*4] |
| 145 | eor $t2,$t2,$t4,lsr#$sigma1[2] @ sigma1(X[i+14]) |
| 146 | ldr $t4,[sp,#`($i+9)%16`*4] |
| 147 | |
| 148 | add $t2,$t2,$t0 |
| 149 | eor $t0,$e,$e,ror#`$Sigma1[1]-$Sigma1[0]` @ from BODY_00_15 |
| 150 | add $t1,$t1,$t2 |
| 151 | eor $t0,$t0,$e,ror#`$Sigma1[2]-$Sigma1[0]` @ Sigma1(e) |
| 152 | add $t1,$t1,$t4 @ X[i] |
| 153 | ___ |
| 154 | &BODY_00_15(@_); |
| 155 | } |
| 156 | |
| 157 | $code=<<___; |
| 158 | #ifndef __KERNEL__ |
| 159 | # include "arm_arch.h" |
| 160 | #else |
| 161 | # define __ARM_ARCH__ __LINUX_ARM_ARCH__ |
| 162 | # define __ARM_MAX_ARCH__ 7 |
| 163 | #endif |
| 164 | |
| 165 | .text |
| 166 | #if __ARM_ARCH__<7 |
| 167 | .code 32 |
| 168 | #else |
| 169 | .syntax unified |
| 170 | # ifdef __thumb2__ |
| 171 | # define adrl adr |
| 172 | .thumb |
| 173 | # else |
| 174 | .code 32 |
| 175 | # endif |
| 176 | #endif |
| 177 | |
| 178 | .type K256,%object |
| 179 | .align 5 |
| 180 | K256: |
| 181 | .word 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 |
| 182 | .word 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 |
| 183 | .word 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 |
| 184 | .word 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 |
| 185 | .word 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc |
| 186 | .word 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da |
| 187 | .word 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 |
| 188 | .word 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 |
| 189 | .word 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 |
| 190 | .word 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 |
| 191 | .word 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 |
| 192 | .word 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 |
| 193 | .word 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 |
| 194 | .word 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 |
| 195 | .word 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 |
| 196 | .word 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 |
| 197 | .size K256,.-K256 |
| 198 | .word 0 @ terminator |
| 199 | #if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__) |
| 200 | .LOPENSSL_armcap: |
| 201 | .word OPENSSL_armcap_P-sha256_block_data_order |
| 202 | #endif |
| 203 | .align 5 |
| 204 | |
| 205 | .global sha256_block_data_order |
| 206 | .type sha256_block_data_order,%function |
| 207 | sha256_block_data_order: |
| 208 | #if __ARM_ARCH__<7 |
| 209 | sub r3,pc,#8 @ sha256_block_data_order |
| 210 | #else |
| 211 | adr r3,sha256_block_data_order |
| 212 | #endif |
| 213 | #if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__) |
| 214 | ldr r12,.LOPENSSL_armcap |
| 215 | ldr r12,[r3,r12] @ OPENSSL_armcap_P |
| 216 | tst r12,#ARMV8_SHA256 |
| 217 | bne .LARMv8 |
| 218 | tst r12,#ARMV7_NEON |
| 219 | bne .LNEON |
| 220 | #endif |
| 221 | add $len,$inp,$len,lsl#6 @ len to point at the end of inp |
| 222 | stmdb sp!,{$ctx,$inp,$len,r4-r11,lr} |
| 223 | ldmia $ctx,{$A,$B,$C,$D,$E,$F,$G,$H} |
| 224 | sub $Ktbl,r3,#256+32 @ K256 |
| 225 | sub sp,sp,#16*4 @ alloca(X[16]) |
| 226 | .Loop: |
| 227 | # if __ARM_ARCH__>=7 |
| 228 | ldr $t1,[$inp],#4 |
| 229 | # else |
| 230 | ldrb $t1,[$inp,#3] |
| 231 | # endif |
| 232 | eor $t3,$B,$C @ magic |
| 233 | eor $t2,$t2,$t2 |
| 234 | ___ |
| 235 | for($i=0;$i<16;$i++) { &BODY_00_15($i,@V); unshift(@V,pop(@V)); } |
| 236 | $code.=".Lrounds_16_xx:\n"; |
| 237 | for (;$i<32;$i++) { &BODY_16_XX($i,@V); unshift(@V,pop(@V)); } |
| 238 | $code.=<<___; |
| 239 | #if __ARM_ARCH__>=7 |
| 240 | ite eq @ Thumb2 thing, sanity check in ARM |
| 241 | #endif |
| 242 | ldreq $t3,[sp,#16*4] @ pull ctx |
| 243 | bne .Lrounds_16_xx |
| 244 | |
| 245 | add $A,$A,$t2 @ h+=Maj(a,b,c) from the past |
| 246 | ldr $t0,[$t3,#0] |
| 247 | ldr $t1,[$t3,#4] |
| 248 | ldr $t2,[$t3,#8] |
| 249 | add $A,$A,$t0 |
| 250 | ldr $t0,[$t3,#12] |
| 251 | add $B,$B,$t1 |
| 252 | ldr $t1,[$t3,#16] |
| 253 | add $C,$C,$t2 |
| 254 | ldr $t2,[$t3,#20] |
| 255 | add $D,$D,$t0 |
| 256 | ldr $t0,[$t3,#24] |
| 257 | add $E,$E,$t1 |
| 258 | ldr $t1,[$t3,#28] |
| 259 | add $F,$F,$t2 |
| 260 | ldr $inp,[sp,#17*4] @ pull inp |
| 261 | ldr $t2,[sp,#18*4] @ pull inp+len |
| 262 | add $G,$G,$t0 |
| 263 | add $H,$H,$t1 |
| 264 | stmia $t3,{$A,$B,$C,$D,$E,$F,$G,$H} |
| 265 | cmp $inp,$t2 |
| 266 | sub $Ktbl,$Ktbl,#256 @ rewind Ktbl |
| 267 | bne .Loop |
| 268 | |
| 269 | add sp,sp,#`16+3`*4 @ destroy frame |
| 270 | #if __ARM_ARCH__>=5 |
| 271 | ldmia sp!,{r4-r11,pc} |
| 272 | #else |
| 273 | ldmia sp!,{r4-r11,lr} |
| 274 | tst lr,#1 |
| 275 | moveq pc,lr @ be binary compatible with V4, yet |
| 276 | bx lr @ interoperable with Thumb ISA:-) |
| 277 | #endif |
| 278 | .size sha256_block_data_order,.-sha256_block_data_order |
| 279 | ___ |
| 280 | ###################################################################### |
| 281 | # NEON stuff |
| 282 | # |
| 283 | {{{ |
| 284 | my @X=map("q$_",(0..3)); |
| 285 | my ($T0,$T1,$T2,$T3,$T4,$T5)=("q8","q9","q10","q11","d24","d25"); |
| 286 | my $Xfer=$t4; |
| 287 | my $j=0; |
| 288 | |
| 289 | sub Dlo() { shift=~m|q([1]?[0-9])|?"d".($1*2):""; } |
| 290 | sub Dhi() { shift=~m|q([1]?[0-9])|?"d".($1*2+1):""; } |
| 291 | |
| 292 | sub AUTOLOAD() # thunk [simplified] x86-style perlasm |
| 293 | { my $opcode = $AUTOLOAD; $opcode =~ s/.*:://; $opcode =~ s/_/\./; |
| 294 | my $arg = pop; |
| 295 | $arg = "#$arg" if ($arg*1 eq $arg); |
| 296 | $code .= "\t$opcode\t".join(',',@_,$arg)."\n"; |
| 297 | } |
| 298 | |
| 299 | sub Xupdate() |
| 300 | { use integer; |
| 301 | my $body = shift; |
| 302 | my @insns = (&$body,&$body,&$body,&$body); |
| 303 | my ($a,$b,$c,$d,$e,$f,$g,$h); |
| 304 | |
| 305 | &vext_8 ($T0,@X[0],@X[1],4); # X[1..4] |
| 306 | eval(shift(@insns)); |
| 307 | eval(shift(@insns)); |
| 308 | eval(shift(@insns)); |
| 309 | &vext_8 ($T1,@X[2],@X[3],4); # X[9..12] |
| 310 | eval(shift(@insns)); |
| 311 | eval(shift(@insns)); |
| 312 | eval(shift(@insns)); |
| 313 | &vshr_u32 ($T2,$T0,$sigma0[0]); |
| 314 | eval(shift(@insns)); |
| 315 | eval(shift(@insns)); |
| 316 | &vadd_i32 (@X[0],@X[0],$T1); # X[0..3] += X[9..12] |
| 317 | eval(shift(@insns)); |
| 318 | eval(shift(@insns)); |
| 319 | &vshr_u32 ($T1,$T0,$sigma0[2]); |
| 320 | eval(shift(@insns)); |
| 321 | eval(shift(@insns)); |
| 322 | &vsli_32 ($T2,$T0,32-$sigma0[0]); |
| 323 | eval(shift(@insns)); |
| 324 | eval(shift(@insns)); |
| 325 | &vshr_u32 ($T3,$T0,$sigma0[1]); |
| 326 | eval(shift(@insns)); |
| 327 | eval(shift(@insns)); |
| 328 | &veor ($T1,$T1,$T2); |
| 329 | eval(shift(@insns)); |
| 330 | eval(shift(@insns)); |
| 331 | &vsli_32 ($T3,$T0,32-$sigma0[1]); |
| 332 | eval(shift(@insns)); |
| 333 | eval(shift(@insns)); |
| 334 | &vshr_u32 ($T4,&Dhi(@X[3]),$sigma1[0]); |
| 335 | eval(shift(@insns)); |
| 336 | eval(shift(@insns)); |
| 337 | &veor ($T1,$T1,$T3); # sigma0(X[1..4]) |
| 338 | eval(shift(@insns)); |
| 339 | eval(shift(@insns)); |
| 340 | &vsli_32 ($T4,&Dhi(@X[3]),32-$sigma1[0]); |
| 341 | eval(shift(@insns)); |
| 342 | eval(shift(@insns)); |
| 343 | &vshr_u32 ($T5,&Dhi(@X[3]),$sigma1[2]); |
| 344 | eval(shift(@insns)); |
| 345 | eval(shift(@insns)); |
| 346 | &vadd_i32 (@X[0],@X[0],$T1); # X[0..3] += sigma0(X[1..4]) |
| 347 | eval(shift(@insns)); |
| 348 | eval(shift(@insns)); |
| 349 | &veor ($T5,$T5,$T4); |
| 350 | eval(shift(@insns)); |
| 351 | eval(shift(@insns)); |
| 352 | &vshr_u32 ($T4,&Dhi(@X[3]),$sigma1[1]); |
| 353 | eval(shift(@insns)); |
| 354 | eval(shift(@insns)); |
| 355 | &vsli_32 ($T4,&Dhi(@X[3]),32-$sigma1[1]); |
| 356 | eval(shift(@insns)); |
| 357 | eval(shift(@insns)); |
| 358 | &veor ($T5,$T5,$T4); # sigma1(X[14..15]) |
| 359 | eval(shift(@insns)); |
| 360 | eval(shift(@insns)); |
| 361 | &vadd_i32 (&Dlo(@X[0]),&Dlo(@X[0]),$T5);# X[0..1] += sigma1(X[14..15]) |
| 362 | eval(shift(@insns)); |
| 363 | eval(shift(@insns)); |
| 364 | &vshr_u32 ($T4,&Dlo(@X[0]),$sigma1[0]); |
| 365 | eval(shift(@insns)); |
| 366 | eval(shift(@insns)); |
| 367 | &vsli_32 ($T4,&Dlo(@X[0]),32-$sigma1[0]); |
| 368 | eval(shift(@insns)); |
| 369 | eval(shift(@insns)); |
| 370 | &vshr_u32 ($T5,&Dlo(@X[0]),$sigma1[2]); |
| 371 | eval(shift(@insns)); |
| 372 | eval(shift(@insns)); |
| 373 | &veor ($T5,$T5,$T4); |
| 374 | eval(shift(@insns)); |
| 375 | eval(shift(@insns)); |
| 376 | &vshr_u32 ($T4,&Dlo(@X[0]),$sigma1[1]); |
| 377 | eval(shift(@insns)); |
| 378 | eval(shift(@insns)); |
| 379 | &vld1_32 ("{$T0}","[$Ktbl,:128]!"); |
| 380 | eval(shift(@insns)); |
| 381 | eval(shift(@insns)); |
| 382 | &vsli_32 ($T4,&Dlo(@X[0]),32-$sigma1[1]); |
| 383 | eval(shift(@insns)); |
| 384 | eval(shift(@insns)); |
| 385 | &veor ($T5,$T5,$T4); # sigma1(X[16..17]) |
| 386 | eval(shift(@insns)); |
| 387 | eval(shift(@insns)); |
| 388 | &vadd_i32 (&Dhi(@X[0]),&Dhi(@X[0]),$T5);# X[2..3] += sigma1(X[16..17]) |
| 389 | eval(shift(@insns)); |
| 390 | eval(shift(@insns)); |
| 391 | &vadd_i32 ($T0,$T0,@X[0]); |
| 392 | while($#insns>=2) { eval(shift(@insns)); } |
| 393 | &vst1_32 ("{$T0}","[$Xfer,:128]!"); |
| 394 | eval(shift(@insns)); |
| 395 | eval(shift(@insns)); |
| 396 | |
| 397 | push(@X,shift(@X)); # "rotate" X[] |
| 398 | } |
| 399 | |
| 400 | sub Xpreload() |
| 401 | { use integer; |
| 402 | my $body = shift; |
| 403 | my @insns = (&$body,&$body,&$body,&$body); |
| 404 | my ($a,$b,$c,$d,$e,$f,$g,$h); |
| 405 | |
| 406 | eval(shift(@insns)); |
| 407 | eval(shift(@insns)); |
| 408 | eval(shift(@insns)); |
| 409 | eval(shift(@insns)); |
| 410 | &vld1_32 ("{$T0}","[$Ktbl,:128]!"); |
| 411 | eval(shift(@insns)); |
| 412 | eval(shift(@insns)); |
| 413 | eval(shift(@insns)); |
| 414 | eval(shift(@insns)); |
| 415 | &vrev32_8 (@X[0],@X[0]); |
| 416 | eval(shift(@insns)); |
| 417 | eval(shift(@insns)); |
| 418 | eval(shift(@insns)); |
| 419 | eval(shift(@insns)); |
| 420 | &vadd_i32 ($T0,$T0,@X[0]); |
| 421 | foreach (@insns) { eval; } # remaining instructions |
| 422 | &vst1_32 ("{$T0}","[$Xfer,:128]!"); |
| 423 | |
| 424 | push(@X,shift(@X)); # "rotate" X[] |
| 425 | } |
| 426 | |
| 427 | sub body_00_15 () { |
| 428 | ( |
| 429 | '($a,$b,$c,$d,$e,$f,$g,$h)=@V;'. |
| 430 | '&add ($h,$h,$t1)', # h+=X[i]+K[i] |
| 431 | '&eor ($t1,$f,$g)', |
| 432 | '&eor ($t0,$e,$e,"ror#".($Sigma1[1]-$Sigma1[0]))', |
| 433 | '&add ($a,$a,$t2)', # h+=Maj(a,b,c) from the past |
| 434 | '&and ($t1,$t1,$e)', |
| 435 | '&eor ($t2,$t0,$e,"ror#".($Sigma1[2]-$Sigma1[0]))', # Sigma1(e) |
| 436 | '&eor ($t0,$a,$a,"ror#".($Sigma0[1]-$Sigma0[0]))', |
| 437 | '&eor ($t1,$t1,$g)', # Ch(e,f,g) |
| 438 | '&add ($h,$h,$t2,"ror#$Sigma1[0]")', # h+=Sigma1(e) |
| 439 | '&eor ($t2,$a,$b)', # a^b, b^c in next round |
| 440 | '&eor ($t0,$t0,$a,"ror#".($Sigma0[2]-$Sigma0[0]))', # Sigma0(a) |
| 441 | '&add ($h,$h,$t1)', # h+=Ch(e,f,g) |
| 442 | '&ldr ($t1,sprintf "[sp,#%d]",4*(($j+1)&15)) if (($j&15)!=15);'. |
| 443 | '&ldr ($t1,"[$Ktbl]") if ($j==15);'. |
| 444 | '&ldr ($t1,"[sp,#64]") if ($j==31)', |
| 445 | '&and ($t3,$t3,$t2)', # (b^c)&=(a^b) |
| 446 | '&add ($d,$d,$h)', # d+=h |
| 447 | '&add ($h,$h,$t0,"ror#$Sigma0[0]");'. # h+=Sigma0(a) |
| 448 | '&eor ($t3,$t3,$b)', # Maj(a,b,c) |
| 449 | '$j++; unshift(@V,pop(@V)); ($t2,$t3)=($t3,$t2);' |
| 450 | ) |
| 451 | } |
| 452 | |
| 453 | $code.=<<___; |
| 454 | #if __ARM_MAX_ARCH__>=7 |
| 455 | .arch armv7-a |
| 456 | .fpu neon |
| 457 | |
| 458 | .global sha256_block_data_order_neon |
| 459 | .type sha256_block_data_order_neon,%function |
| 460 | .align 4 |
| 461 | sha256_block_data_order_neon: |
| 462 | .LNEON: |
| 463 | stmdb sp!,{r4-r12,lr} |
| 464 | |
| 465 | sub $H,sp,#16*4+16 |
| 466 | adrl $Ktbl,K256 |
| 467 | bic $H,$H,#15 @ align for 128-bit stores |
| 468 | mov $t2,sp |
| 469 | mov sp,$H @ alloca |
| 470 | add $len,$inp,$len,lsl#6 @ len to point at the end of inp |
| 471 | |
| 472 | vld1.8 {@X[0]},[$inp]! |
| 473 | vld1.8 {@X[1]},[$inp]! |
| 474 | vld1.8 {@X[2]},[$inp]! |
| 475 | vld1.8 {@X[3]},[$inp]! |
| 476 | vld1.32 {$T0},[$Ktbl,:128]! |
| 477 | vld1.32 {$T1},[$Ktbl,:128]! |
| 478 | vld1.32 {$T2},[$Ktbl,:128]! |
| 479 | vld1.32 {$T3},[$Ktbl,:128]! |
| 480 | vrev32.8 @X[0],@X[0] @ yes, even on |
| 481 | str $ctx,[sp,#64] |
| 482 | vrev32.8 @X[1],@X[1] @ big-endian |
| 483 | str $inp,[sp,#68] |
| 484 | mov $Xfer,sp |
| 485 | vrev32.8 @X[2],@X[2] |
| 486 | str $len,[sp,#72] |
| 487 | vrev32.8 @X[3],@X[3] |
| 488 | str $t2,[sp,#76] @ save original sp |
| 489 | vadd.i32 $T0,$T0,@X[0] |
| 490 | vadd.i32 $T1,$T1,@X[1] |
| 491 | vst1.32 {$T0},[$Xfer,:128]! |
| 492 | vadd.i32 $T2,$T2,@X[2] |
| 493 | vst1.32 {$T1},[$Xfer,:128]! |
| 494 | vadd.i32 $T3,$T3,@X[3] |
| 495 | vst1.32 {$T2},[$Xfer,:128]! |
| 496 | vst1.32 {$T3},[$Xfer,:128]! |
| 497 | |
| 498 | ldmia $ctx,{$A-$H} |
| 499 | sub $Xfer,$Xfer,#64 |
| 500 | ldr $t1,[sp,#0] |
| 501 | eor $t2,$t2,$t2 |
| 502 | eor $t3,$B,$C |
| 503 | b .L_00_48 |
| 504 | |
| 505 | .align 4 |
| 506 | .L_00_48: |
| 507 | ___ |
| 508 | &Xupdate(\&body_00_15); |
| 509 | &Xupdate(\&body_00_15); |
| 510 | &Xupdate(\&body_00_15); |
| 511 | &Xupdate(\&body_00_15); |
| 512 | $code.=<<___; |
| 513 | teq $t1,#0 @ check for K256 terminator |
| 514 | ldr $t1,[sp,#0] |
| 515 | sub $Xfer,$Xfer,#64 |
| 516 | bne .L_00_48 |
| 517 | |
| 518 | ldr $inp,[sp,#68] |
| 519 | ldr $t0,[sp,#72] |
| 520 | sub $Ktbl,$Ktbl,#256 @ rewind $Ktbl |
| 521 | teq $inp,$t0 |
| 522 | it eq |
| 523 | subeq $inp,$inp,#64 @ avoid SEGV |
| 524 | vld1.8 {@X[0]},[$inp]! @ load next input block |
| 525 | vld1.8 {@X[1]},[$inp]! |
| 526 | vld1.8 {@X[2]},[$inp]! |
| 527 | vld1.8 {@X[3]},[$inp]! |
| 528 | it ne |
| 529 | strne $inp,[sp,#68] |
| 530 | mov $Xfer,sp |
| 531 | ___ |
| 532 | &Xpreload(\&body_00_15); |
| 533 | &Xpreload(\&body_00_15); |
| 534 | &Xpreload(\&body_00_15); |
| 535 | &Xpreload(\&body_00_15); |
| 536 | $code.=<<___; |
| 537 | ldr $t0,[$t1,#0] |
| 538 | add $A,$A,$t2 @ h+=Maj(a,b,c) from the past |
| 539 | ldr $t2,[$t1,#4] |
| 540 | ldr $t3,[$t1,#8] |
| 541 | ldr $t4,[$t1,#12] |
| 542 | add $A,$A,$t0 @ accumulate |
| 543 | ldr $t0,[$t1,#16] |
| 544 | add $B,$B,$t2 |
| 545 | ldr $t2,[$t1,#20] |
| 546 | add $C,$C,$t3 |
| 547 | ldr $t3,[$t1,#24] |
| 548 | add $D,$D,$t4 |
| 549 | ldr $t4,[$t1,#28] |
| 550 | add $E,$E,$t0 |
| 551 | str $A,[$t1],#4 |
| 552 | add $F,$F,$t2 |
| 553 | str $B,[$t1],#4 |
| 554 | add $G,$G,$t3 |
| 555 | str $C,[$t1],#4 |
| 556 | add $H,$H,$t4 |
| 557 | str $D,[$t1],#4 |
| 558 | stmia $t1,{$E-$H} |
| 559 | |
| 560 | ittte ne |
| 561 | movne $Xfer,sp |
| 562 | ldrne $t1,[sp,#0] |
| 563 | eorne $t2,$t2,$t2 |
| 564 | ldreq sp,[sp,#76] @ restore original sp |
| 565 | itt ne |
| 566 | eorne $t3,$B,$C |
| 567 | bne .L_00_48 |
| 568 | |
| 569 | ldmia sp!,{r4-r12,pc} |
| 570 | .size sha256_block_data_order_neon,.-sha256_block_data_order_neon |
| 571 | #endif |
| 572 | ___ |
| 573 | }}} |
| 574 | ###################################################################### |
| 575 | # ARMv8 stuff |
| 576 | # |
| 577 | {{{ |
| 578 | my ($ABCD,$EFGH,$abcd)=map("q$_",(0..2)); |
| 579 | my @MSG=map("q$_",(8..11)); |
| 580 | my ($W0,$W1,$ABCD_SAVE,$EFGH_SAVE)=map("q$_",(12..15)); |
| 581 | my $Ktbl="r3"; |
| 582 | |
| 583 | $code.=<<___; |
| 584 | #if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__) |
| 585 | |
| 586 | # ifdef __thumb2__ |
| 587 | # define INST(a,b,c,d) .byte c,d|0xc,a,b |
| 588 | # else |
| 589 | # define INST(a,b,c,d) .byte a,b,c,d |
| 590 | # endif |
| 591 | |
| 592 | .type sha256_block_data_order_armv8,%function |
| 593 | .align 5 |
| 594 | sha256_block_data_order_armv8: |
| 595 | .LARMv8: |
| 596 | vld1.32 {$ABCD,$EFGH},[$ctx] |
| 597 | # ifdef __thumb2__ |
| 598 | adr $Ktbl,.LARMv8 |
| 599 | sub $Ktbl,$Ktbl,#.LARMv8-K256 |
| 600 | # else |
| 601 | adrl $Ktbl,K256 |
| 602 | # endif |
| 603 | add $len,$inp,$len,lsl#6 @ len to point at the end of inp |
| 604 | |
| 605 | .Loop_v8: |
| 606 | vld1.8 {@MSG[0]-@MSG[1]},[$inp]! |
| 607 | vld1.8 {@MSG[2]-@MSG[3]},[$inp]! |
| 608 | vld1.32 {$W0},[$Ktbl]! |
| 609 | vrev32.8 @MSG[0],@MSG[0] |
| 610 | vrev32.8 @MSG[1],@MSG[1] |
| 611 | vrev32.8 @MSG[2],@MSG[2] |
| 612 | vrev32.8 @MSG[3],@MSG[3] |
| 613 | vmov $ABCD_SAVE,$ABCD @ offload |
| 614 | vmov $EFGH_SAVE,$EFGH |
| 615 | teq $inp,$len |
| 616 | ___ |
| 617 | for($i=0;$i<12;$i++) { |
| 618 | $code.=<<___; |
| 619 | vld1.32 {$W1},[$Ktbl]! |
| 620 | vadd.i32 $W0,$W0,@MSG[0] |
| 621 | sha256su0 @MSG[0],@MSG[1] |
| 622 | vmov $abcd,$ABCD |
| 623 | sha256h $ABCD,$EFGH,$W0 |
| 624 | sha256h2 $EFGH,$abcd,$W0 |
| 625 | sha256su1 @MSG[0],@MSG[2],@MSG[3] |
| 626 | ___ |
| 627 | ($W0,$W1)=($W1,$W0); push(@MSG,shift(@MSG)); |
| 628 | } |
| 629 | $code.=<<___; |
| 630 | vld1.32 {$W1},[$Ktbl]! |
| 631 | vadd.i32 $W0,$W0,@MSG[0] |
| 632 | vmov $abcd,$ABCD |
| 633 | sha256h $ABCD,$EFGH,$W0 |
| 634 | sha256h2 $EFGH,$abcd,$W0 |
| 635 | |
| 636 | vld1.32 {$W0},[$Ktbl]! |
| 637 | vadd.i32 $W1,$W1,@MSG[1] |
| 638 | vmov $abcd,$ABCD |
| 639 | sha256h $ABCD,$EFGH,$W1 |
| 640 | sha256h2 $EFGH,$abcd,$W1 |
| 641 | |
| 642 | vld1.32 {$W1},[$Ktbl] |
| 643 | vadd.i32 $W0,$W0,@MSG[2] |
| 644 | sub $Ktbl,$Ktbl,#256-16 @ rewind |
| 645 | vmov $abcd,$ABCD |
| 646 | sha256h $ABCD,$EFGH,$W0 |
| 647 | sha256h2 $EFGH,$abcd,$W0 |
| 648 | |
| 649 | vadd.i32 $W1,$W1,@MSG[3] |
| 650 | vmov $abcd,$ABCD |
| 651 | sha256h $ABCD,$EFGH,$W1 |
| 652 | sha256h2 $EFGH,$abcd,$W1 |
| 653 | |
| 654 | vadd.i32 $ABCD,$ABCD,$ABCD_SAVE |
| 655 | vadd.i32 $EFGH,$EFGH,$EFGH_SAVE |
| 656 | it ne |
| 657 | bne .Loop_v8 |
| 658 | |
| 659 | vst1.32 {$ABCD,$EFGH},[$ctx] |
| 660 | |
| 661 | ret @ bx lr |
| 662 | .size sha256_block_data_order_armv8,.-sha256_block_data_order_armv8 |
| 663 | #endif |
| 664 | ___ |
| 665 | }}} |
| 666 | $code.=<<___; |
| 667 | .asciz "SHA256 block transform for ARMv4/NEON/ARMv8, CRYPTOGAMS by <appro\@openssl.org>" |
| 668 | .align 2 |
| 669 | #if __ARM_MAX_ARCH__>=7 && !defined(__KERNEL__) |
| 670 | .comm OPENSSL_armcap_P,4,4 |
| 671 | #endif |
| 672 | ___ |
| 673 | |
| 674 | open SELF,$0; |
| 675 | while(<SELF>) { |
| 676 | next if (/^#!/); |
| 677 | last if (!s/^#/@/ and !/^$/); |
| 678 | print; |
| 679 | } |
| 680 | close SELF; |
| 681 | |
| 682 | { my %opcode = ( |
| 683 | "sha256h" => 0xf3000c40, "sha256h2" => 0xf3100c40, |
| 684 | "sha256su0" => 0xf3ba03c0, "sha256su1" => 0xf3200c40 ); |
| 685 | |
| 686 | sub unsha256 { |
| 687 | my ($mnemonic,$arg)=@_; |
| 688 | |
| 689 | if ($arg =~ m/q([0-9]+)(?:,\s*q([0-9]+))?,\s*q([0-9]+)/o) { |
| 690 | my $word = $opcode{$mnemonic}|(($1&7)<<13)|(($1&8)<<19) |
| 691 | |(($2&7)<<17)|(($2&8)<<4) |
| 692 | |(($3&7)<<1) |(($3&8)<<2); |
| 693 | # since ARMv7 instructions are always encoded little-endian. |
| 694 | # correct solution is to use .inst directive, but older |
| 695 | # assemblers don't implement it:-( |
| 696 | sprintf "INST(0x%02x,0x%02x,0x%02x,0x%02x)\t@ %s %s", |
| 697 | $word&0xff,($word>>8)&0xff, |
| 698 | ($word>>16)&0xff,($word>>24)&0xff, |
| 699 | $mnemonic,$arg; |
| 700 | } |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | foreach (split($/,$code)) { |
| 705 | |
| 706 | s/\`([^\`]*)\`/eval $1/geo; |
| 707 | |
| 708 | s/\b(sha256\w+)\s+(q.*)/unsha256($1,$2)/geo; |
| 709 | |
| 710 | s/\bret\b/bx lr/go or |
| 711 | s/\bbx\s+lr\b/.word\t0xe12fff1e/go; # make it possible to compile with -march=armv4 |
| 712 | |
| 713 | print $_,"\n"; |
| 714 | } |
| 715 | |
| 716 | close STDOUT; # enforce flush |