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