crypto/sha/asm/sha1-armv8.pl

   1 #! /usr/bin/env perl
   2 # Copyright 2014-2020 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 # Kryo          1.88                    8.00 (+90%)
  30 #
  31 # (*)   Software results are presented mostly for reference purposes.
  32 # (**)  Keep in mind that Denver relies on binary translation, which
  33 #       optimizes compiler output at run-time.
  34
  35 $flavour = shift;
  36 $output  = shift;
  37
  38 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  39 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
  40 ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
  41 die "can't locate arm-xlate.pl";
  42
  43 open OUT,"| \"$^X\" $xlate $flavour $output";
  44 *STDOUT=*OUT;
  45
  46 ($ctx,$inp,$num)=("x0","x1","x2");
  47 @Xw=map("w$_",(3..17,19));
  48 @Xx=map("x$_",(3..17,19));
  49 @V=($A,$B,$C,$D,$E)=map("w$_",(20..24));
  50 ($t0,$t1,$t2,$K)=map("w$_",(25..28));
  51
  52
  53 sub BODY_00_19 {
  54 my ($i,$a,$b,$c,$d,$e)=@_;
  55 my $j=($i+2)&15;
  56
  57 $code.=<<___ if ($i<15 && !($i&1));
  58         lsr     @Xx[$i+1],@Xx[$i],#32
  59 ___
  60 $code.=<<___ if ($i<14 && !($i&1));
  61         ldr     @Xx[$i+2],[$inp,#`($i+2)*4-64`]
  62 ___
  63 $code.=<<___ if ($i<14 && ($i&1));
  64 #ifdef  __ARMEB__
  65         ror     @Xx[$i+1],@Xx[$i+1],#32
  66 #else
  67         rev32   @Xx[$i+1],@Xx[$i+1]
  68 #endif
  69 ___
  70 $code.=<<___ if ($i<14);
  71         bic     $t0,$d,$b
  72         and     $t1,$c,$b
  73         ror     $t2,$a,#27
  74         add     $d,$d,$K                // future e+=K
  75         orr     $t0,$t0,$t1
  76         add     $e,$e,$t2               // e+=rot(a,5)
  77         ror     $b,$b,#2
  78         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
  79         add     $e,$e,$t0               // e+=F(b,c,d)
  80 ___
  81 $code.=<<___ if ($i==19);
  82         movz    $K,#0xeba1
  83         movk    $K,#0x6ed9,lsl#16
  84 ___
  85 $code.=<<___ if ($i>=14);
  86          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
  87         bic     $t0,$d,$b
  88         and     $t1,$c,$b
  89         ror     $t2,$a,#27
  90          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
  91         add     $d,$d,$K                // future e+=K
  92         orr     $t0,$t0,$t1
  93         add     $e,$e,$t2               // e+=rot(a,5)
  94          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
  95         ror     $b,$b,#2
  96         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
  97         add     $e,$e,$t0               // e+=F(b,c,d)
  98          ror    @Xw[$j],@Xw[$j],#31
  99 ___
 100 }
 101
 102 sub BODY_40_59 {
 103 my ($i,$a,$b,$c,$d,$e)=@_;
 104 my $j=($i+2)&15;
 105
 106 $code.=<<___ if ($i==59);
 107         movz    $K,#0xc1d6
 108         movk    $K,#0xca62,lsl#16
 109 ___
 110 $code.=<<___;
 111         orr     $t0,$b,$c
 112         and     $t1,$b,$c
 113          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 114         ror     $t2,$a,#27
 115         and     $t0,$t0,$d
 116         add     $d,$d,$K                // future e+=K
 117          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 118         add     $e,$e,$t2               // e+=rot(a,5)
 119         orr     $t0,$t0,$t1
 120         ror     $b,$b,#2
 121          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 122         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 123         add     $e,$e,$t0               // e+=F(b,c,d)
 124          ror    @Xw[$j],@Xw[$j],#31
 125 ___
 126 }
 127
 128 sub BODY_20_39 {
 129 my ($i,$a,$b,$c,$d,$e)=@_;
 130 my $j=($i+2)&15;
 131
 132 $code.=<<___ if ($i==39);
 133         movz    $K,#0xbcdc
 134         movk    $K,#0x8f1b,lsl#16
 135 ___
 136 $code.=<<___ if ($i<78);
 137          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 138         eor     $t0,$d,$b
 139         ror     $t2,$a,#27
 140         add     $d,$d,$K                // future e+=K
 141          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 142         eor     $t0,$t0,$c
 143         add     $e,$e,$t2               // e+=rot(a,5)
 144         ror     $b,$b,#2
 145          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 146         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 147         add     $e,$e,$t0               // e+=F(b,c,d)
 148          ror    @Xw[$j],@Xw[$j],#31
 149 ___
 150 $code.=<<___ if ($i==78);
 151         ldp     @Xw[1],@Xw[2],[$ctx]
 152         eor     $t0,$d,$b
 153         ror     $t2,$a,#27
 154         add     $d,$d,$K                // future e+=K
 155         eor     $t0,$t0,$c
 156         add     $e,$e,$t2               // e+=rot(a,5)
 157         ror     $b,$b,#2
 158         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 159         add     $e,$e,$t0               // e+=F(b,c,d)
 160 ___
 161 $code.=<<___ if ($i==79);
 162         ldp     @Xw[3],@Xw[4],[$ctx,#8]
 163         eor     $t0,$d,$b
 164         ror     $t2,$a,#27
 165         eor     $t0,$t0,$c
 166         add     $e,$e,$t2               // e+=rot(a,5)
 167         ror     $b,$b,#2
 168         ldr     @Xw[5],[$ctx,#16]
 169         add     $e,$e,$t0               // e+=F(b,c,d)
 170 ___
 171 }
 172
 173 $code.=<<___;
 174 #include "arm_arch.h"
 175
 176 .text
 177
 178 .extern OPENSSL_armcap_P
 179 .hidden OPENSSL_armcap_P
 180 .globl  sha1_block_data_order
 181 .type   sha1_block_data_order,%function
 182 .align  6
 183 sha1_block_data_order:
 184 #ifdef  __ILP32__
 185         ldrsw   x16,.LOPENSSL_armcap_P
 186 #else
 187         ldr     x16,.LOPENSSL_armcap_P
 188 #endif
 189         adr     x17,.LOPENSSL_armcap_P
 190         add     x16,x16,x17
 191         ldr     w16,[x16]
 192         tst     w16,#ARMV8_SHA1
 193         b.ne    .Lv8_entry
 194
 195         stp     x29,x30,[sp,#-96]!
 196         add     x29,sp,#0
 197         stp     x19,x20,[sp,#16]
 198         stp     x21,x22,[sp,#32]
 199         stp     x23,x24,[sp,#48]
 200         stp     x25,x26,[sp,#64]
 201         stp     x27,x28,[sp,#80]
 202
 203         ldp     $A,$B,[$ctx]
 204         ldp     $C,$D,[$ctx,#8]
 205         ldr     $E,[$ctx,#16]
 206
 207 .Loop:
 208         ldr     @Xx[0],[$inp],#64
 209         movz    $K,#0x7999
 210         sub     $num,$num,#1
 211         movk    $K,#0x5a82,lsl#16
 212 #ifdef  __ARMEB__
 213         ror     $Xx[0],@Xx[0],#32
 214 #else
 215         rev32   @Xx[0],@Xx[0]
 216 #endif
 217         add     $E,$E,$K                // warm it up
 218         add     $E,$E,@Xw[0]
 219 ___
 220 for($i=0;$i<20;$i++)    { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
 221 for(;$i<40;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 222 for(;$i<60;$i++)        { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
 223 for(;$i<80;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 224 $code.=<<___;
 225         add     $B,$B,@Xw[2]
 226         add     $C,$C,@Xw[3]
 227         add     $A,$A,@Xw[1]
 228         add     $D,$D,@Xw[4]
 229         add     $E,$E,@Xw[5]
 230         stp     $A,$B,[$ctx]
 231         stp     $C,$D,[$ctx,#8]
 232         str     $E,[$ctx,#16]
 233         cbnz    $num,.Loop
 234
 235         ldp     x19,x20,[sp,#16]
 236         ldp     x21,x22,[sp,#32]
 237         ldp     x23,x24,[sp,#48]
 238         ldp     x25,x26,[sp,#64]
 239         ldp     x27,x28,[sp,#80]
 240         ldr     x29,[sp],#96
 241         ret
 242 .size   sha1_block_data_order,.-sha1_block_data_order
 243 ___
 244 {{{
 245 my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
 246 my @MSG=map("v$_.16b",(4..7));
 247 my @Kxx=map("v$_.4s",(16..19));
 248 my ($W0,$W1)=("v20.4s","v21.4s");
 249 my $ABCD_SAVE="v22.16b";
 250
 251 $code.=<<___;
 252 .type   sha1_block_armv8,%function
 253 .align  6
 254 sha1_block_armv8:
 255 .Lv8_entry:
 256         stp     x29,x30,[sp,#-16]!
 257         add     x29,sp,#0
 258
 259         adr     x4,.Lconst
 260         eor     $E,$E,$E
 261         ld1.32  {$ABCD},[$ctx],#16
 262         ld1.32  {$E}[0],[$ctx]
 263         sub     $ctx,$ctx,#16
 264         ld1.32  {@Kxx[0]-@Kxx[3]},[x4]
 265
 266 .Loop_hw:
 267         ld1     {@MSG[0]-@MSG[3]},[$inp],#64
 268         sub     $num,$num,#1
 269         rev32   @MSG[0],@MSG[0]
 270         rev32   @MSG[1],@MSG[1]
 271
 272         add.i32 $W0,@Kxx[0],@MSG[0]
 273         rev32   @MSG[2],@MSG[2]
 274         orr     $ABCD_SAVE,$ABCD,$ABCD  // offload
 275
 276         add.i32 $W1,@Kxx[0],@MSG[1]
 277         rev32   @MSG[3],@MSG[3]
 278         sha1h   $E1,$ABCD
 279         sha1c   $ABCD,$E,$W0            // 0
 280         add.i32 $W0,@Kxx[$j],@MSG[2]
 281         sha1su0 @MSG[0],@MSG[1],@MSG[2]
 282 ___
 283 for ($j=0,$i=1;$i<20-3;$i++) {
 284 my $f=("c","p","m","p")[$i/5];
 285 $code.=<<___;
 286         sha1h   $E0,$ABCD               // $i
 287         sha1$f  $ABCD,$E1,$W1
 288         add.i32 $W1,@Kxx[$j],@MSG[3]
 289         sha1su1 @MSG[0],@MSG[3]
 290 ___
 291 $code.=<<___ if ($i<20-4);
 292         sha1su0 @MSG[1],@MSG[2],@MSG[3]
 293 ___
 294         ($E0,$E1)=($E1,$E0);            ($W0,$W1)=($W1,$W0);
 295         push(@MSG,shift(@MSG));         $j++ if ((($i+3)%5)==0);
 296 }
 297 $code.=<<___;
 298         sha1h   $E0,$ABCD               // $i
 299         sha1p   $ABCD,$E1,$W1
 300         add.i32 $W1,@Kxx[$j],@MSG[3]
 301
 302         sha1h   $E1,$ABCD               // 18
 303         sha1p   $ABCD,$E0,$W0
 304
 305         sha1h   $E0,$ABCD               // 19
 306         sha1p   $ABCD,$E1,$W1
 307
 308         add.i32 $E,$E,$E0
 309         add.i32 $ABCD,$ABCD,$ABCD_SAVE
 310
 311         cbnz    $num,.Loop_hw
 312
 313         st1.32  {$ABCD},[$ctx],#16
 314         st1.32  {$E}[0],[$ctx]
 315
 316         ldr     x29,[sp],#16
 317         ret
 318 .size   sha1_block_armv8,.-sha1_block_armv8
 319 .align  6
 320 .Lconst:
 321 .long   0x5a827999,0x5a827999,0x5a827999,0x5a827999     //K_00_19
 322 .long   0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1     //K_20_39
 323 .long   0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc     //K_40_59
 324 .long   0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6     //K_60_79
 325 .LOPENSSL_armcap_P:
 326 #ifdef  __ILP32__
 327 .long   OPENSSL_armcap_P-.
 328 #else
 329 .quad   OPENSSL_armcap_P-.
 330 #endif
 331 .asciz  "SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
 332 .align  2
 333 ___
 334 }}}
 335
 336 {   my  %opcode = (
 337         "sha1c"         => 0x5e000000,  "sha1p"         => 0x5e001000,
 338         "sha1m"         => 0x5e002000,  "sha1su0"       => 0x5e003000,
 339         "sha1h"         => 0x5e280800,  "sha1su1"       => 0x5e281800   );
 340
 341     sub unsha1 {
 342         my ($mnemonic,$arg)=@_;
 343
 344         $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
 345         &&
 346         sprintf ".inst\t0x%08x\t//%s %s",
 347                         $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
 348                         $mnemonic,$arg;
 349     }
 350 }
 351
 352 foreach(split("\n",$code)) {
 353
 354         s/\`([^\`]*)\`/eval($1)/geo;
 355
 356         s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;
 357
 358         s/\.\w?32\b//o          and s/\.16b/\.4s/go;
 359         m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;
 360
 361         print $_,"\n";
 362 }
 363
 364 close STDOUT or die "error closing STDOUT: $!";