crypto/sha/asm/sha1-armv8.pl

   1 #! /usr/bin/env perl
   2 # Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   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
   8
   9 #
  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 # ====================================================================
  16 #
  17 # SHA1 for ARMv8.
  18 #
  19 # Performance in cycles per processed byte and improvement coefficient
  20 # over code generated with "default" compiler:
  21 #
  22 #               hardware-assisted       software(*)
  23 # Apple A7      2.31                    4.13 (+14%)
  24 # Cortex-A53    2.24                    8.03 (+97%)
  25 # Cortex-A57    2.35                    7.88 (+74%)
  26 # Denver        2.13                    3.97 (+0%)(**)
  27 # X-Gene                                8.80 (+200%)
  28 # Mongoose      2.05                    6.50 (+160%)
  29 #
  30 # (*)   Software results are presented mostly for reference purposes.
  31 # (**)  Keep in mind that Denver relies on binary translation, which
  32 #       optimizes compiler output at run-time.
  33
  34 $flavour = shift;
  35 $output  = shift;
  36
  37 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  38 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
  39 ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
  40 die "can't locate arm-xlate.pl";
  41
  42 open OUT,"| \"$^X\" $xlate $flavour $output";
  43 *STDOUT=*OUT;
  44
  45 ($ctx,$inp,$num)=("x0","x1","x2");
  46 @Xw=map("w$_",(3..17,19));
  47 @Xx=map("x$_",(3..17,19));
  48 @V=($A,$B,$C,$D,$E)=map("w$_",(20..24));
  49 ($t0,$t1,$t2,$K)=map("w$_",(25..28));
  50
  51
  52 sub BODY_00_19 {
  53 my ($i,$a,$b,$c,$d,$e)=@_;
  54 my $j=($i+2)&15;
  55
  56 $code.=<<___ if ($i<15 && !($i&1));
  57         lsr     @Xx[$i+1],@Xx[$i],#32
  58 ___
  59 $code.=<<___ if ($i<14 && !($i&1));
  60         ldr     @Xx[$i+2],[$inp,#`($i+2)*4-64`]
  61 ___
  62 $code.=<<___ if ($i<14 && ($i&1));
  63 #ifdef  __ARMEB__
  64         ror     @Xx[$i+1],@Xx[$i+1],#32
  65 #else
  66         rev32   @Xx[$i+1],@Xx[$i+1]
  67 #endif
  68 ___
  69 $code.=<<___ if ($i<14);
  70         bic     $t0,$d,$b
  71         and     $t1,$c,$b
  72         ror     $t2,$a,#27
  73         add     $d,$d,$K                // future e+=K
  74         orr     $t0,$t0,$t1
  75         add     $e,$e,$t2               // e+=rot(a,5)
  76         ror     $b,$b,#2
  77         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
  78         add     $e,$e,$t0               // e+=F(b,c,d)
  79 ___
  80 $code.=<<___ if ($i==19);
  81         movz    $K,#0xeba1
  82         movk    $K,#0x6ed9,lsl#16
  83 ___
  84 $code.=<<___ if ($i>=14);
  85          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
  86         bic     $t0,$d,$b
  87         and     $t1,$c,$b
  88         ror     $t2,$a,#27
  89          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
  90         add     $d,$d,$K                // future e+=K
  91         orr     $t0,$t0,$t1
  92         add     $e,$e,$t2               // e+=rot(a,5)
  93          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
  94         ror     $b,$b,#2
  95         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
  96         add     $e,$e,$t0               // e+=F(b,c,d)
  97          ror    @Xw[$j],@Xw[$j],#31
  98 ___
  99 }
 100
 101 sub BODY_40_59 {
 102 my ($i,$a,$b,$c,$d,$e)=@_;
 103 my $j=($i+2)&15;
 104
 105 $code.=<<___ if ($i==59);
 106         movz    $K,#0xc1d6
 107         movk    $K,#0xca62,lsl#16
 108 ___
 109 $code.=<<___;
 110         orr     $t0,$b,$c
 111         and     $t1,$b,$c
 112          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 113         ror     $t2,$a,#27
 114         and     $t0,$t0,$d
 115         add     $d,$d,$K                // future e+=K
 116          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 117         add     $e,$e,$t2               // e+=rot(a,5)
 118         orr     $t0,$t0,$t1
 119         ror     $b,$b,#2
 120          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 121         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 122         add     $e,$e,$t0               // e+=F(b,c,d)
 123          ror    @Xw[$j],@Xw[$j],#31
 124 ___
 125 }
 126
 127 sub BODY_20_39 {
 128 my ($i,$a,$b,$c,$d,$e)=@_;
 129 my $j=($i+2)&15;
 130
 131 $code.=<<___ if ($i==39);
 132         movz    $K,#0xbcdc
 133         movk    $K,#0x8f1b,lsl#16
 134 ___
 135 $code.=<<___ if ($i<78);
 136          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 137         eor     $t0,$d,$b
 138         ror     $t2,$a,#27
 139         add     $d,$d,$K                // future e+=K
 140          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 141         eor     $t0,$t0,$c
 142         add     $e,$e,$t2               // e+=rot(a,5)
 143         ror     $b,$b,#2
 144          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 145         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 146         add     $e,$e,$t0               // e+=F(b,c,d)
 147          ror    @Xw[$j],@Xw[$j],#31
 148 ___
 149 $code.=<<___ if ($i==78);
 150         ldp     @Xw[1],@Xw[2],[$ctx]
 151         eor     $t0,$d,$b
 152         ror     $t2,$a,#27
 153         add     $d,$d,$K                // future e+=K
 154         eor     $t0,$t0,$c
 155         add     $e,$e,$t2               // e+=rot(a,5)
 156         ror     $b,$b,#2
 157         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 158         add     $e,$e,$t0               // e+=F(b,c,d)
 159 ___
 160 $code.=<<___ if ($i==79);
 161         ldp     @Xw[3],@Xw[4],[$ctx,#8]
 162         eor     $t0,$d,$b
 163         ror     $t2,$a,#27
 164         eor     $t0,$t0,$c
 165         add     $e,$e,$t2               // e+=rot(a,5)
 166         ror     $b,$b,#2
 167         ldr     @Xw[5],[$ctx,#16]
 168         add     $e,$e,$t0               // e+=F(b,c,d)
 169 ___
 170 }
 171
 172 $code.=<<___;
 173 #include "arm_arch.h"
 174
 175 .text
 176
 177 .extern OPENSSL_armcap_P
 178 .globl  sha1_block_data_order
 179 .type   sha1_block_data_order,%function
 180 .align  6
 181 sha1_block_data_order:
 182 #ifdef  __ILP32__
 183         ldrsw   x16,.LOPENSSL_armcap_P
 184 #else
 185         ldr     x16,.LOPENSSL_armcap_P
 186 #endif
 187         adr     x17,.LOPENSSL_armcap_P
 188         add     x16,x16,x17
 189         ldr     w16,[x16]
 190         tst     w16,#ARMV8_SHA1
 191         b.ne    .Lv8_entry
 192
 193         stp     x29,x30,[sp,#-96]!
 194         add     x29,sp,#0
 195         stp     x19,x20,[sp,#16]
 196         stp     x21,x22,[sp,#32]
 197         stp     x23,x24,[sp,#48]
 198         stp     x25,x26,[sp,#64]
 199         stp     x27,x28,[sp,#80]
 200
 201         ldp     $A,$B,[$ctx]
 202         ldp     $C,$D,[$ctx,#8]
 203         ldr     $E,[$ctx,#16]
 204
 205 .Loop:
 206         ldr     @Xx[0],[$inp],#64
 207         movz    $K,#0x7999
 208         sub     $num,$num,#1
 209         movk    $K,#0x5a82,lsl#16
 210 #ifdef  __ARMEB__
 211         ror     $Xx[0],@Xx[0],#32
 212 #else
 213         rev32   @Xx[0],@Xx[0]
 214 #endif
 215         add     $E,$E,$K                // warm it up
 216         add     $E,$E,@Xw[0]
 217 ___
 218 for($i=0;$i<20;$i++)    { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
 219 for(;$i<40;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 220 for(;$i<60;$i++)        { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
 221 for(;$i<80;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 222 $code.=<<___;
 223         add     $B,$B,@Xw[2]
 224         add     $C,$C,@Xw[3]
 225         add     $A,$A,@Xw[1]
 226         add     $D,$D,@Xw[4]
 227         add     $E,$E,@Xw[5]
 228         stp     $A,$B,[$ctx]
 229         stp     $C,$D,[$ctx,#8]
 230         str     $E,[$ctx,#16]
 231         cbnz    $num,.Loop
 232
 233         ldp     x19,x20,[sp,#16]
 234         ldp     x21,x22,[sp,#32]
 235         ldp     x23,x24,[sp,#48]
 236         ldp     x25,x26,[sp,#64]
 237         ldp     x27,x28,[sp,#80]
 238         ldr     x29,[sp],#96
 239         ret
 240 .size   sha1_block_data_order,.-sha1_block_data_order
 241 ___
 242 {{{
 243 my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
 244 my @MSG=map("v$_.16b",(4..7));
 245 my @Kxx=map("v$_.4s",(16..19));
 246 my ($W0,$W1)=("v20.4s","v21.4s");
 247 my $ABCD_SAVE="v22.16b";
 248
 249 $code.=<<___;
 250 .type   sha1_block_armv8,%function
 251 .align  6
 252 sha1_block_armv8:
 253 .Lv8_entry:
 254         stp     x29,x30,[sp,#-16]!
 255         add     x29,sp,#0
 256
 257         adr     x4,.Lconst
 258         eor     $E,$E,$E
 259         ld1.32  {$ABCD},[$ctx],#16
 260         ld1.32  {$E}[0],[$ctx]
 261         sub     $ctx,$ctx,#16
 262         ld1.32  {@Kxx[0]-@Kxx[3]},[x4]
 263
 264 .Loop_hw:
 265         ld1     {@MSG[0]-@MSG[3]},[$inp],#64
 266         sub     $num,$num,#1
 267         rev32   @MSG[0],@MSG[0]
 268         rev32   @MSG[1],@MSG[1]
 269
 270         add.i32 $W0,@Kxx[0],@MSG[0]
 271         rev32   @MSG[2],@MSG[2]
 272         orr     $ABCD_SAVE,$ABCD,$ABCD  // offload
 273
 274         add.i32 $W1,@Kxx[0],@MSG[1]
 275         rev32   @MSG[3],@MSG[3]
 276         sha1h   $E1,$ABCD
 277         sha1c   $ABCD,$E,$W0            // 0
 278         add.i32 $W0,@Kxx[$j],@MSG[2]
 279         sha1su0 @MSG[0],@MSG[1],@MSG[2]
 280 ___
 281 for ($j=0,$i=1;$i<20-3;$i++) {
 282 my $f=("c","p","m","p")[$i/5];
 283 $code.=<<___;
 284         sha1h   $E0,$ABCD               // $i
 285         sha1$f  $ABCD,$E1,$W1
 286         add.i32 $W1,@Kxx[$j],@MSG[3]
 287         sha1su1 @MSG[0],@MSG[3]
 288 ___
 289 $code.=<<___ if ($i<20-4);
 290         sha1su0 @MSG[1],@MSG[2],@MSG[3]
 291 ___
 292         ($E0,$E1)=($E1,$E0);            ($W0,$W1)=($W1,$W0);
 293         push(@MSG,shift(@MSG));         $j++ if ((($i+3)%5)==0);
 294 }
 295 $code.=<<___;
 296         sha1h   $E0,$ABCD               // $i
 297         sha1p   $ABCD,$E1,$W1
 298         add.i32 $W1,@Kxx[$j],@MSG[3]
 299
 300         sha1h   $E1,$ABCD               // 18
 301         sha1p   $ABCD,$E0,$W0
 302
 303         sha1h   $E0,$ABCD               // 19
 304         sha1p   $ABCD,$E1,$W1
 305
 306         add.i32 $E,$E,$E0
 307         add.i32 $ABCD,$ABCD,$ABCD_SAVE
 308
 309         cbnz    $num,.Loop_hw
 310
 311         st1.32  {$ABCD},[$ctx],#16
 312         st1.32  {$E}[0],[$ctx]
 313
 314         ldr     x29,[sp],#16
 315         ret
 316 .size   sha1_block_armv8,.-sha1_block_armv8
 317 .align  6
 318 .Lconst:
 319 .long   0x5a827999,0x5a827999,0x5a827999,0x5a827999     //K_00_19
 320 .long   0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1     //K_20_39
 321 .long   0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc     //K_40_59
 322 .long   0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6     //K_60_79
 323 .LOPENSSL_armcap_P:
 324 #ifdef  __ILP32__
 325 .long   OPENSSL_armcap_P-.
 326 #else
 327 .quad   OPENSSL_armcap_P-.
 328 #endif
 329 .asciz  "SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
 330 .align  2
 331 .comm   OPENSSL_armcap_P,4,4
 332 ___
 333 }}}
 334
 335 {   my  %opcode = (
 336         "sha1c"         => 0x5e000000,  "sha1p"         => 0x5e001000,
 337         "sha1m"         => 0x5e002000,  "sha1su0"       => 0x5e003000,
 338         "sha1h"         => 0x5e280800,  "sha1su1"       => 0x5e281800   );
 339
 340     sub unsha1 {
 341         my ($mnemonic,$arg)=@_;
 342
 343         $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
 344         &&
 345         sprintf ".inst\t0x%08x\t//%s %s",
 346                         $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
 347                         $mnemonic,$arg;
 348     }
 349 }
 350
 351 foreach(split("\n",$code)) {
 352
 353         s/\`([^\`]*)\`/eval($1)/geo;
 354
 355         s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;
 356
 357         s/\.\w?32\b//o          and s/\.16b/\.4s/go;
 358         m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;
 359
 360         print $_,"\n";
 361 }
 362
 363 close STDOUT;