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 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 #
  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 && !($i&1));
  61         ldur    @Xx[$i+2],[$inp,#`($i+2)*4-64`]
  62 ___
  63 $code.=<<___ if ($i<14 && ($i&1));
  64 #ifdef  __AARCH64EB__
  65         ror     @Xx[$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 #ifndef __KERNEL__
 175 # include "arm_arch.h"
 176 .extern OPENSSL_armcap_P
 177 #endif
 178
 179 .text
 180
 181 .globl  sha1_block_data_order
 182 .type   sha1_block_data_order,%function
 183 .align  6
 184 sha1_block_data_order:
 185         adrp    x16,OPENSSL_armcap_P
 186         ldr     w16,[x16,#:lo12:OPENSSL_armcap_P]
 187         tst     w16,#ARMV8_SHA1
 188         b.ne    .Lv8_entry
 189
 190         stp     x29,x30,[sp,#-96]!
 191         add     x29,sp,#0
 192         stp     x19,x20,[sp,#16]
 193         stp     x21,x22,[sp,#32]
 194         stp     x23,x24,[sp,#48]
 195         stp     x25,x26,[sp,#64]
 196         stp     x27,x28,[sp,#80]
 197
 198         ldp     $A,$B,[$ctx]
 199         ldp     $C,$D,[$ctx,#8]
 200         ldr     $E,[$ctx,#16]
 201
 202 .Loop:
 203         ldr     @Xx[0],[$inp],#64
 204         movz    $K,#0x7999
 205         sub     $num,$num,#1
 206         movk    $K,#0x5a82,lsl#16
 207 #ifdef  __AARCH64EB__
 208         ror     $Xx[0],@Xx[0],#32
 209 #else
 210         rev32   @Xx[0],@Xx[0]
 211 #endif
 212         add     $E,$E,$K                // warm it up
 213         add     $E,$E,@Xw[0]
 214 ___
 215 for($i=0;$i<20;$i++)    { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
 216 for(;$i<40;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 217 for(;$i<60;$i++)        { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
 218 for(;$i<80;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 219 $code.=<<___;
 220         add     $B,$B,@Xw[2]
 221         add     $C,$C,@Xw[3]
 222         add     $A,$A,@Xw[1]
 223         add     $D,$D,@Xw[4]
 224         add     $E,$E,@Xw[5]
 225         stp     $A,$B,[$ctx]
 226         stp     $C,$D,[$ctx,#8]
 227         str     $E,[$ctx,#16]
 228         cbnz    $num,.Loop
 229
 230         ldp     x19,x20,[sp,#16]
 231         ldp     x21,x22,[sp,#32]
 232         ldp     x23,x24,[sp,#48]
 233         ldp     x25,x26,[sp,#64]
 234         ldp     x27,x28,[sp,#80]
 235         ldr     x29,[sp],#96
 236         ret
 237 .size   sha1_block_data_order,.-sha1_block_data_order
 238 ___
 239 {{{
 240 my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
 241 my @MSG=map("v$_.16b",(4..7));
 242 my @Kxx=map("v$_.4s",(16..19));
 243 my ($W0,$W1)=("v20.4s","v21.4s");
 244 my $ABCD_SAVE="v22.16b";
 245
 246 $code.=<<___;
 247 .type   sha1_block_armv8,%function
 248 .align  6
 249 sha1_block_armv8:
 250 .Lv8_entry:
 251         stp     x29,x30,[sp,#-16]!
 252         add     x29,sp,#0
 253
 254         adr     x4,.Lconst
 255         eor     $E,$E,$E
 256         ld1.32  {$ABCD},[$ctx],#16
 257         ld1.32  {$E}[0],[$ctx]
 258         sub     $ctx,$ctx,#16
 259         ld1.32  {@Kxx[0]-@Kxx[3]},[x4]
 260
 261 .Loop_hw:
 262         ld1     {@MSG[0]-@MSG[3]},[$inp],#64
 263         sub     $num,$num,#1
 264         rev32   @MSG[0],@MSG[0]
 265         rev32   @MSG[1],@MSG[1]
 266
 267         add.i32 $W0,@Kxx[0],@MSG[0]
 268         rev32   @MSG[2],@MSG[2]
 269         orr     $ABCD_SAVE,$ABCD,$ABCD  // offload
 270
 271         add.i32 $W1,@Kxx[0],@MSG[1]
 272         rev32   @MSG[3],@MSG[3]
 273         sha1h   $E1,$ABCD
 274         sha1c   $ABCD,$E,$W0            // 0
 275         add.i32 $W0,@Kxx[$j],@MSG[2]
 276         sha1su0 @MSG[0],@MSG[1],@MSG[2]
 277 ___
 278 for ($j=0,$i=1;$i<20-3;$i++) {
 279 my $f=("c","p","m","p")[$i/5];
 280 $code.=<<___;
 281         sha1h   $E0,$ABCD               // $i
 282         sha1$f  $ABCD,$E1,$W1
 283         add.i32 $W1,@Kxx[$j],@MSG[3]
 284         sha1su1 @MSG[0],@MSG[3]
 285 ___
 286 $code.=<<___ if ($i<20-4);
 287         sha1su0 @MSG[1],@MSG[2],@MSG[3]
 288 ___
 289         ($E0,$E1)=($E1,$E0);            ($W0,$W1)=($W1,$W0);
 290         push(@MSG,shift(@MSG));         $j++ if ((($i+3)%5)==0);
 291 }
 292 $code.=<<___;
 293         sha1h   $E0,$ABCD               // $i
 294         sha1p   $ABCD,$E1,$W1
 295         add.i32 $W1,@Kxx[$j],@MSG[3]
 296
 297         sha1h   $E1,$ABCD               // 18
 298         sha1p   $ABCD,$E0,$W0
 299
 300         sha1h   $E0,$ABCD               // 19
 301         sha1p   $ABCD,$E1,$W1
 302
 303         add.i32 $E,$E,$E0
 304         add.i32 $ABCD,$ABCD,$ABCD_SAVE
 305
 306         cbnz    $num,.Loop_hw
 307
 308         st1.32  {$ABCD},[$ctx],#16
 309         st1.32  {$E}[0],[$ctx]
 310
 311         ldr     x29,[sp],#16
 312         ret
 313 .size   sha1_block_armv8,.-sha1_block_armv8
 314 .align  6
 315 .Lconst:
 316 .long   0x5a827999,0x5a827999,0x5a827999,0x5a827999     //K_00_19
 317 .long   0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1     //K_20_39
 318 .long   0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc     //K_40_59
 319 .long   0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6     //K_60_79
 320 .asciz  "SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
 321 .align  2
 322 #if !defined(__KERNELL__) && !defined(_WIN64)
 323 .comm   OPENSSL_armcap_P,4,4
 324 #endif
 325 ___
 326 }}}
 327
 328 {   my  %opcode = (
 329         "sha1c"         => 0x5e000000,  "sha1p"         => 0x5e001000,
 330         "sha1m"         => 0x5e002000,  "sha1su0"       => 0x5e003000,
 331         "sha1h"         => 0x5e280800,  "sha1su1"       => 0x5e281800   );
 332
 333     sub unsha1 {
 334         my ($mnemonic,$arg)=@_;
 335
 336         $arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
 337         &&
 338         sprintf ".inst\t0x%08x\t//%s %s",
 339                         $opcode{$mnemonic}|$1|($2<<5)|($3<<16),
 340                         $mnemonic,$arg;
 341     }
 342 }
 343
 344 foreach(split("\n",$code)) {
 345
 346         s/\`([^\`]*)\`/eval($1)/geo;
 347
 348         s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;
 349
 350         s/\.\w?32\b//o          and s/\.16b/\.4s/go;
 351         m/(ld|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;
 352
 353         print $_,"\n";
 354 }
 355
 356 close STDOUT;