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 Apache License 2.0 (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 # ThunderX2     2.64                    6.36 (+150%)
  31 #
  32 # (*)   Software results are presented mostly for reference purposes.
  33 # (**)  Keep in mind that Denver relies on binary translation, which
  34 #       optimizes compiler output at run-time.
  35
  36 # $output is the last argument if it looks like a file (it has an extension)
  37 # $flavour is the first argument if it doesn't look like a file
  38 $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
  39 $flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
  40
  41 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  42 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
  43 ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate) or
  44 die "can't locate arm-xlate.pl";
  45
  46 open OUT,"| \"$^X\" $xlate $flavour \"$output\""
  47     or die "can't call $xlate: $1";
  48 *STDOUT=*OUT;
  49
  50 ($ctx,$inp,$num)=("x0","x1","x2");
  51 @Xw=map("w$_",(3..17,19));
  52 @Xx=map("x$_",(3..17,19));
  53 @V=($A,$B,$C,$D,$E)=map("w$_",(20..24));
  54 ($t0,$t1,$t2,$K)=map("w$_",(25..28));
  55
  56
  57 sub BODY_00_19 {
  58 my ($i,$a,$b,$c,$d,$e)=@_;
  59 my $j=($i+2)&15;
  60
  61 $code.=<<___ if ($i<15 && !($i&1));
  62         lsr     @Xx[$i+1],@Xx[$i],#32
  63 ___
  64 $code.=<<___ if ($i<14 && !($i&1));
  65         ldur    @Xx[$i+2],[$inp,#`($i+2)*4-64`]
  66 ___
  67 $code.=<<___ if ($i<14 && ($i&1));
  68 #ifdef  __AARCH64EB__
  69         ror     @Xx[$i+1],@Xx[$i+1],#32
  70 #else
  71         rev32   @Xx[$i+1],@Xx[$i+1]
  72 #endif
  73 ___
  74 $code.=<<___ if ($i<14);
  75         bic     $t0,$d,$b
  76         and     $t1,$c,$b
  77         ror     $t2,$a,#27
  78         add     $d,$d,$K                // future e+=K
  79         orr     $t0,$t0,$t1
  80         add     $e,$e,$t2               // e+=rot(a,5)
  81         ror     $b,$b,#2
  82         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
  83         add     $e,$e,$t0               // e+=F(b,c,d)
  84 ___
  85 $code.=<<___ if ($i==19);
  86         movz    $K,#0xeba1
  87         movk    $K,#0x6ed9,lsl#16
  88 ___
  89 $code.=<<___ if ($i>=14);
  90          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
  91         bic     $t0,$d,$b
  92         and     $t1,$c,$b
  93         ror     $t2,$a,#27
  94          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
  95         add     $d,$d,$K                // future e+=K
  96         orr     $t0,$t0,$t1
  97         add     $e,$e,$t2               // e+=rot(a,5)
  98          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
  99         ror     $b,$b,#2
 100         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 101         add     $e,$e,$t0               // e+=F(b,c,d)
 102          ror    @Xw[$j],@Xw[$j],#31
 103 ___
 104 }
 105
 106 sub BODY_40_59 {
 107 my ($i,$a,$b,$c,$d,$e)=@_;
 108 my $j=($i+2)&15;
 109
 110 $code.=<<___ if ($i==59);
 111         movz    $K,#0xc1d6
 112         movk    $K,#0xca62,lsl#16
 113 ___
 114 $code.=<<___;
 115         orr     $t0,$b,$c
 116         and     $t1,$b,$c
 117          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 118         ror     $t2,$a,#27
 119         and     $t0,$t0,$d
 120         add     $d,$d,$K                // future e+=K
 121          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 122         add     $e,$e,$t2               // e+=rot(a,5)
 123         orr     $t0,$t0,$t1
 124         ror     $b,$b,#2
 125          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 126         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 127         add     $e,$e,$t0               // e+=F(b,c,d)
 128          ror    @Xw[$j],@Xw[$j],#31
 129 ___
 130 }
 131
 132 sub BODY_20_39 {
 133 my ($i,$a,$b,$c,$d,$e)=@_;
 134 my $j=($i+2)&15;
 135
 136 $code.=<<___ if ($i==39);
 137         movz    $K,#0xbcdc
 138         movk    $K,#0x8f1b,lsl#16
 139 ___
 140 $code.=<<___ if ($i<78);
 141          eor    @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 142         eor     $t0,$d,$b
 143         ror     $t2,$a,#27
 144         add     $d,$d,$K                // future e+=K
 145          eor    @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 146         eor     $t0,$t0,$c
 147         add     $e,$e,$t2               // e+=rot(a,5)
 148         ror     $b,$b,#2
 149          eor    @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 150         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 151         add     $e,$e,$t0               // e+=F(b,c,d)
 152          ror    @Xw[$j],@Xw[$j],#31
 153 ___
 154 $code.=<<___ if ($i==78);
 155         ldp     @Xw[1],@Xw[2],[$ctx]
 156         eor     $t0,$d,$b
 157         ror     $t2,$a,#27
 158         add     $d,$d,$K                // future e+=K
 159         eor     $t0,$t0,$c
 160         add     $e,$e,$t2               // e+=rot(a,5)
 161         ror     $b,$b,#2
 162         add     $d,$d,@Xw[($i+1)&15]    // future e+=X[i]
 163         add     $e,$e,$t0               // e+=F(b,c,d)
 164 ___
 165 $code.=<<___ if ($i==79);
 166         ldp     @Xw[3],@Xw[4],[$ctx,#8]
 167         eor     $t0,$d,$b
 168         ror     $t2,$a,#27
 169         eor     $t0,$t0,$c
 170         add     $e,$e,$t2               // e+=rot(a,5)
 171         ror     $b,$b,#2
 172         ldr     @Xw[5],[$ctx,#16]
 173         add     $e,$e,$t0               // e+=F(b,c,d)
 174 ___
 175 }
 176
 177 $code.=<<___;
 178 #ifndef __KERNEL__
 179 # include "arm_arch.h"
 180 .extern OPENSSL_armcap_P
 181 #endif
 182
 183 .text
 184
 185 .globl  sha1_block_data_order
 186 .type   sha1_block_data_order,%function
 187 .align  6
 188 sha1_block_data_order:
 189         adrp    x16,OPENSSL_armcap_P
 190         ldr     w16,[x16,#:lo12:OPENSSL_armcap_P]
 191         tst     w16,#ARMV8_SHA1
 192         b.ne    .Lv8_entry
 193
 194         stp     x29,x30,[sp,#-96]!
 195         add     x29,sp,#0
 196         stp     x19,x20,[sp,#16]
 197         stp     x21,x22,[sp,#32]
 198         stp     x23,x24,[sp,#48]
 199         stp     x25,x26,[sp,#64]
 200         stp     x27,x28,[sp,#80]
 201
 202         ldp     $A,$B,[$ctx]
 203         ldp     $C,$D,[$ctx,#8]
 204         ldr     $E,[$ctx,#16]
 205
 206 .Loop:
 207         ldr     @Xx[0],[$inp],#64
 208         movz    $K,#0x7999
 209         sub     $num,$num,#1
 210         movk    $K,#0x5a82,lsl#16
 211 #ifdef  __AARCH64EB__
 212         ror     $Xx[0],@Xx[0],#32
 213 #else
 214         rev32   @Xx[0],@Xx[0]
 215 #endif
 216         add     $E,$E,$K                // warm it up
 217         add     $E,$E,@Xw[0]
 218 ___
 219 for($i=0;$i<20;$i++)    { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
 220 for(;$i<40;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 221 for(;$i<60;$i++)        { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
 222 for(;$i<80;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 223 $code.=<<___;
 224         add     $B,$B,@Xw[2]
 225         add     $C,$C,@Xw[3]
 226         add     $A,$A,@Xw[1]
 227         add     $D,$D,@Xw[4]
 228         add     $E,$E,@Xw[5]
 229         stp     $A,$B,[$ctx]
 230         stp     $C,$D,[$ctx,#8]
 231         str     $E,[$ctx,#16]
 232         cbnz    $num,.Loop
 233
 234         ldp     x19,x20,[sp,#16]
 235         ldp     x21,x22,[sp,#32]
 236         ldp     x23,x24,[sp,#48]
 237         ldp     x25,x26,[sp,#64]
 238         ldp     x27,x28,[sp,#80]
 239         ldr     x29,[sp],#96
 240         ret
 241 .size   sha1_block_data_order,.-sha1_block_data_order
 242 ___
 243 {{{
 244 my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
 245 my @MSG=map("v$_.16b",(4..7));
 246 my @Kxx=map("v$_.4s",(16..19));
 247 my ($W0,$W1)=("v20.4s","v21.4s");
 248 my $ABCD_SAVE="v22.16b";
 249
 250 $code.=<<___;
 251 .type   sha1_block_armv8,%function
 252 .align  6
 253 sha1_block_armv8:
 254 .Lv8_entry:
 255         stp     x29,x30,[sp,#-16]!
 256         add     x29,sp,#0
 257
 258         adr     x4,.Lconst
 259         eor     $E,$E,$E
 260         ld1.32  {$ABCD},[$ctx],#16
 261         ld1.32  {$E}[0],[$ctx]
 262         sub     $ctx,$ctx,#16
 263         ld1.32  {@Kxx[0]-@Kxx[3]},[x4]
 264
 265 .Loop_hw:
 266         ld1     {@MSG[0]-@MSG[3]},[$inp],#64
 267         sub     $num,$num,#1
 268         rev32   @MSG[0],@MSG[0]
 269         rev32   @MSG[1],@MSG[1]
 270
 271         add.i32 $W0,@Kxx[0],@MSG[0]
 272         rev32   @MSG[2],@MSG[2]
 273         orr     $ABCD_SAVE,$ABCD,$ABCD  // offload
 274
 275         add.i32 $W1,@Kxx[0],@MSG[1]
 276         rev32   @MSG[3],@MSG[3]
 277         sha1h   $E1,$ABCD
 278         sha1c   $ABCD,$E,$W0            // 0
 279         add.i32 $W0,@Kxx[$j],@MSG[2]
 280         sha1su0 @MSG[0],@MSG[1],@MSG[2]
 281 ___
 282 for ($j=0,$i=1;$i<20-3;$i++) {
 283 my $f=("c","p","m","p")[$i/5];
 284 $code.=<<___;
 285         sha1h   $E0,$ABCD               // $i
 286         sha1$f  $ABCD,$E1,$W1
 287         add.i32 $W1,@Kxx[$j],@MSG[3]
 288         sha1su1 @MSG[0],@MSG[3]
 289 ___
 290 $code.=<<___ if ($i<20-4);
 291         sha1su0 @MSG[1],@MSG[2],@MSG[3]
 292 ___
 293         ($E0,$E1)=($E1,$E0);            ($W0,$W1)=($W1,$W0);
 294         push(@MSG,shift(@MSG));         $j++ if ((($i+3)%5)==0);
 295 }
 296 $code.=<<___;
 297         sha1h   $E0,$ABCD               // $i
 298         sha1p   $ABCD,$E1,$W1
 299         add.i32 $W1,@Kxx[$j],@MSG[3]
 300
 301         sha1h   $E1,$ABCD               // 18
 302         sha1p   $ABCD,$E0,$W0
 303
 304         sha1h   $E0,$ABCD               // 19
 305         sha1p   $ABCD,$E1,$W1
 306
 307         add.i32 $E,$E,$E0
 308         add.i32 $ABCD,$ABCD,$ABCD_SAVE
 309
 310         cbnz    $num,.Loop_hw
 311
 312         st1.32  {$ABCD},[$ctx],#16
 313         st1.32  {$E}[0],[$ctx]
 314
 315         ldr     x29,[sp],#16
 316         ret
 317 .size   sha1_block_armv8,.-sha1_block_armv8
 318 .align  6
 319 .Lconst:
 320 .long   0x5a827999,0x5a827999,0x5a827999,0x5a827999     //K_00_19
 321 .long   0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1     //K_20_39
 322 .long   0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc     //K_40_59
 323 .long   0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6     //K_60_79
 324 .asciz  "SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
 325 .align  2
 326 #if !defined(__KERNELL__) && !defined(_WIN64)
 327 .comm   OPENSSL_armcap_P,4,4
 328 #endif
 329 ___
 330 }}}
 331
 332 {   my  %opcode = (
 333         "sha1c"         => 0x5e000000,  "sha1p"         => 0x5e001000,
 334         "sha1m"         => 0x5e002000,  "sha1su0"       => 0x5e003000,
 335         "sha1h"         => 0x5e280800,  "sha1su1"       => 0x5e281800   );
 336
 337     sub unsha1 {
 338         my ($mnemonic,$arg)=@_;
 339
 340         $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
 341         &&
 342         sprintf ".inst\t0x%08x\t//%s %s",
 343                         $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
 344                         $mnemonic,$arg;
 345     }
 346 }
 347
 348 foreach(split("\n",$code)) {
 349
 350         s/\`([^\`]*)\`/eval($1)/geo;
 351
 352         s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;
 353
 354         s/\.\w?32\b//o          and s/\.16b/\.4s/go;
 355         m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;
 356
 357         print $_,"\n";
 358 }
 359
 360 close STDOUT or die "error closing STDOUT: $!";