crypto/modes/asm/aesni-gcm-x86_64.pl

   1 #!/usr/bin/env perl
   2 #
   3 # ====================================================================
   4 # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
   5 # project. The module is, however, dual licensed under OpenSSL and
   6 # CRYPTOGAMS licenses depending on where you obtain it. For further
   7 # details see http://www.openssl.org/~appro/cryptogams/.
   8 # ====================================================================
   9 #
  10 #
  11 # AES-NI-CTR+GHASH stitch.
  12 #
  13 # February 2013
  14 #
  15 # OpenSSL GCM implementation is organized in such way that its
  16 # performance is rather close to the sum of its streamed components,
  17 # in the context parallelized AES-NI CTR and modulo-scheduled
  18 # PCLMULQDQ-enabled GHASH. Unfortunately, as no stitch implementation
  19 # was observed to perform significantly better than the sum of the
  20 # components on contemporary CPUs, the effort was deemed impossible to
  21 # justify. This module is based on combination of Intel submissions,
  22 # [1] and [2], with MOVBE twist suggested by Ilya Albrekht and Max
  23 # Locktyukhin of Intel Corp. who verified that it reduces shuffles
  24 # pressure with notable relative improvement, achieving 1.0 cycle per
  25 # byte processed with 128-bit key on Haswell processor, and 0.74 -
  26 # on Broadwell. [Mentioned results are raw profiled measurements for
  27 # favourable packet size, one divisible by 96. Applications using the
  28 # EVP interface will observe a few percent worse performance.]
  29 #
  30 # [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest
  31 # [2] http://www.intel.com/content/dam/www/public/us/en/documents/software-support/enabling-high-performance-gcm.pdf
  32
  33 $flavour = shift;
  34 $output  = shift;
  35 if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
  36
  37 $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
  38
  39 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  40 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
  41 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
  42 die "can't locate x86_64-xlate.pl";
  43
  44 if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
  45                 =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
  46         $avx = ($1>=2.19) + ($1>=2.22);
  47 }
  48
  49 if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
  50             `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) {
  51         $avx = ($1>=2.09) + ($1>=2.10);
  52 }
  53
  54 if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
  55             `ml64 2>&1` =~ /Version ([0-9]+)\./) {
  56         $avx = ($1>=10) + ($1>=11);
  57 }
  58
  59 if (!$avx && `$ENV{CC} -v 2>&1` =~ /(^clang version|based on LLVM) ([3-9]\.[0-9]+)/) {
  60         $avx = ($2>=3.0) + ($2>3.0);
  61 }
  62
  63 open OUT,"| \"$^X\" $xlate $flavour $output";
  64 *STDOUT=*OUT;
  65
  66 if ($avx>1) {{{
  67
  68 ($inp,$out,$len,$key,$ivp,$Xip)=("%rdi","%rsi","%rdx","%rcx","%r8","%r9");
  69
  70 ($Ii,$T1,$T2,$Hkey,
  71  $Z0,$Z1,$Z2,$Z3,$Xi) = map("%xmm$_",(0..8));
  72
  73 ($inout0,$inout1,$inout2,$inout3,$inout4,$inout5,$rndkey) = map("%xmm$_",(9..15));
  74
  75 ($counter,$rounds,$ret,$const,$in0,$end0)=("%ebx","%ebp","%r10","%r11","%r14","%r15");
  76
  77 $code=<<___;
  78 .text
  79
  80 .type   _aesni_ctr32_ghash_6x,\@abi-omnipotent
  81 .align  32
  82 _aesni_ctr32_ghash_6x:
  83         vmovdqu         0x20($const),$T2        # borrow $T2, .Lone_msb
  84         sub             \$6,$len
  85         vpxor           $Z0,$Z0,$Z0             # $Z0   = 0
  86         vmovdqu         0x00-0x80($key),$rndkey
  87         vpaddb          $T2,$T1,$inout1
  88         vpaddb          $T2,$inout1,$inout2
  89         vpaddb          $T2,$inout2,$inout3
  90         vpaddb          $T2,$inout3,$inout4
  91         vpaddb          $T2,$inout4,$inout5
  92         vpxor           $rndkey,$T1,$inout0
  93         vmovdqu         $Z0,16+8(%rsp)          # "$Z3" = 0
  94         jmp             .Loop6x
  95
  96 .align  32
  97 .Loop6x:
  98         add             \$`6<<24`,$counter
  99         jc              .Lhandle_ctr32          # discard $inout[1-5]?
 100         vmovdqu         0x00-0x20($Xip),$Hkey   # $Hkey^1
 101           vpaddb        $T2,$inout5,$T1         # next counter value
 102           vpxor         $rndkey,$inout1,$inout1
 103           vpxor         $rndkey,$inout2,$inout2
 104
 105 .Lresume_ctr32:
 106         vmovdqu         $T1,($ivp)              # save next counter value
 107         vpclmulqdq      \$0x10,$Hkey,$Z3,$Z1
 108           vpxor         $rndkey,$inout3,$inout3
 109           vmovups       0x10-0x80($key),$T2     # borrow $T2 for $rndkey
 110         vpclmulqdq      \$0x01,$Hkey,$Z3,$Z2
 111         xor             %r12,%r12
 112         cmp             $in0,$end0
 113
 114           vaesenc       $T2,$inout0,$inout0
 115         vmovdqu         0x30+8(%rsp),$Ii        # I[4]
 116           vpxor         $rndkey,$inout4,$inout4
 117         vpclmulqdq      \$0x00,$Hkey,$Z3,$T1
 118           vaesenc       $T2,$inout1,$inout1
 119           vpxor         $rndkey,$inout5,$inout5
 120         setnc           %r12b
 121         vpclmulqdq      \$0x11,$Hkey,$Z3,$Z3
 122           vaesenc       $T2,$inout2,$inout2
 123         vmovdqu         0x10-0x20($Xip),$Hkey   # $Hkey^2
 124         neg             %r12
 125           vaesenc       $T2,$inout3,$inout3
 126          vpxor          $Z1,$Z2,$Z2
 127         vpclmulqdq      \$0x00,$Hkey,$Ii,$Z1
 128          vpxor          $Z0,$Xi,$Xi             # modulo-scheduled
 129           vaesenc       $T2,$inout4,$inout4
 130          vpxor          $Z1,$T1,$Z0
 131         and             \$0x60,%r12
 132           vmovups       0x20-0x80($key),$rndkey
 133         vpclmulqdq      \$0x10,$Hkey,$Ii,$T1
 134           vaesenc       $T2,$inout5,$inout5
 135
 136         vpclmulqdq      \$0x01,$Hkey,$Ii,$T2
 137         lea             ($in0,%r12),$in0
 138           vaesenc       $rndkey,$inout0,$inout0
 139          vpxor          16+8(%rsp),$Xi,$Xi      # modulo-scheduled [vpxor $Z3,$Xi,$Xi]
 140         vpclmulqdq      \$0x11,$Hkey,$Ii,$Hkey
 141          vmovdqu        0x40+8(%rsp),$Ii        # I[3]
 142           vaesenc       $rndkey,$inout1,$inout1
 143         movbe           0x58($in0),%r13
 144           vaesenc       $rndkey,$inout2,$inout2
 145         movbe           0x50($in0),%r12
 146           vaesenc       $rndkey,$inout3,$inout3
 147         mov             %r13,0x20+8(%rsp)
 148           vaesenc       $rndkey,$inout4,$inout4
 149         mov             %r12,0x28+8(%rsp)
 150         vmovdqu         0x30-0x20($Xip),$Z1     # borrow $Z1 for $Hkey^3
 151           vaesenc       $rndkey,$inout5,$inout5
 152
 153           vmovups       0x30-0x80($key),$rndkey
 154          vpxor          $T1,$Z2,$Z2
 155         vpclmulqdq      \$0x00,$Z1,$Ii,$T1
 156           vaesenc       $rndkey,$inout0,$inout0
 157          vpxor          $T2,$Z2,$Z2
 158         vpclmulqdq      \$0x10,$Z1,$Ii,$T2
 159           vaesenc       $rndkey,$inout1,$inout1
 160          vpxor          $Hkey,$Z3,$Z3
 161         vpclmulqdq      \$0x01,$Z1,$Ii,$Hkey
 162           vaesenc       $rndkey,$inout2,$inout2
 163         vpclmulqdq      \$0x11,$Z1,$Ii,$Z1
 164          vmovdqu        0x50+8(%rsp),$Ii        # I[2]
 165           vaesenc       $rndkey,$inout3,$inout3
 166           vaesenc       $rndkey,$inout4,$inout4
 167          vpxor          $T1,$Z0,$Z0
 168         vmovdqu         0x40-0x20($Xip),$T1     # borrow $T1 for $Hkey^4
 169           vaesenc       $rndkey,$inout5,$inout5
 170
 171           vmovups       0x40-0x80($key),$rndkey
 172          vpxor          $T2,$Z2,$Z2
 173         vpclmulqdq      \$0x00,$T1,$Ii,$T2
 174           vaesenc       $rndkey,$inout0,$inout0
 175          vpxor          $Hkey,$Z2,$Z2
 176         vpclmulqdq      \$0x10,$T1,$Ii,$Hkey
 177           vaesenc       $rndkey,$inout1,$inout1
 178         movbe           0x48($in0),%r13
 179          vpxor          $Z1,$Z3,$Z3
 180         vpclmulqdq      \$0x01,$T1,$Ii,$Z1
 181           vaesenc       $rndkey,$inout2,$inout2
 182         movbe           0x40($in0),%r12
 183         vpclmulqdq      \$0x11,$T1,$Ii,$T1
 184          vmovdqu        0x60+8(%rsp),$Ii        # I[1]
 185           vaesenc       $rndkey,$inout3,$inout3
 186         mov             %r13,0x30+8(%rsp)
 187           vaesenc       $rndkey,$inout4,$inout4
 188         mov             %r12,0x38+8(%rsp)
 189          vpxor          $T2,$Z0,$Z0
 190         vmovdqu         0x60-0x20($Xip),$T2     # borrow $T2 for $Hkey^5
 191           vaesenc       $rndkey,$inout5,$inout5
 192
 193           vmovups       0x50-0x80($key),$rndkey
 194          vpxor          $Hkey,$Z2,$Z2
 195         vpclmulqdq      \$0x00,$T2,$Ii,$Hkey
 196           vaesenc       $rndkey,$inout0,$inout0
 197          vpxor          $Z1,$Z2,$Z2
 198         vpclmulqdq      \$0x10,$T2,$Ii,$Z1
 199           vaesenc       $rndkey,$inout1,$inout1
 200         movbe           0x38($in0),%r13
 201          vpxor          $T1,$Z3,$Z3
 202         vpclmulqdq      \$0x01,$T2,$Ii,$T1
 203          vpxor          0x70+8(%rsp),$Xi,$Xi    # accumulate I[0]
 204           vaesenc       $rndkey,$inout2,$inout2
 205         movbe           0x30($in0),%r12
 206         vpclmulqdq      \$0x11,$T2,$Ii,$T2
 207           vaesenc       $rndkey,$inout3,$inout3
 208         mov             %r13,0x40+8(%rsp)
 209           vaesenc       $rndkey,$inout4,$inout4
 210         mov             %r12,0x48+8(%rsp)
 211          vpxor          $Hkey,$Z0,$Z0
 212          vmovdqu        0x70-0x20($Xip),$Hkey   # $Hkey^6
 213           vaesenc       $rndkey,$inout5,$inout5
 214
 215           vmovups       0x60-0x80($key),$rndkey
 216          vpxor          $Z1,$Z2,$Z2
 217         vpclmulqdq      \$0x10,$Hkey,$Xi,$Z1
 218           vaesenc       $rndkey,$inout0,$inout0
 219          vpxor          $T1,$Z2,$Z2
 220         vpclmulqdq      \$0x01,$Hkey,$Xi,$T1
 221           vaesenc       $rndkey,$inout1,$inout1
 222         movbe           0x28($in0),%r13
 223          vpxor          $T2,$Z3,$Z3
 224         vpclmulqdq      \$0x00,$Hkey,$Xi,$T2
 225           vaesenc       $rndkey,$inout2,$inout2
 226         movbe           0x20($in0),%r12
 227         vpclmulqdq      \$0x11,$Hkey,$Xi,$Xi
 228           vaesenc       $rndkey,$inout3,$inout3
 229         mov             %r13,0x50+8(%rsp)
 230           vaesenc       $rndkey,$inout4,$inout4
 231         mov             %r12,0x58+8(%rsp)
 232         vpxor           $Z1,$Z2,$Z2
 233           vaesenc       $rndkey,$inout5,$inout5
 234         vpxor           $T1,$Z2,$Z2
 235
 236           vmovups       0x70-0x80($key),$rndkey
 237         vpslldq         \$8,$Z2,$Z1
 238         vpxor           $T2,$Z0,$Z0
 239         vmovdqu         0x10($const),$Hkey      # .Lpoly
 240
 241           vaesenc       $rndkey,$inout0,$inout0
 242         vpxor           $Xi,$Z3,$Z3
 243           vaesenc       $rndkey,$inout1,$inout1
 244         vpxor           $Z1,$Z0,$Z0
 245         movbe           0x18($in0),%r13
 246           vaesenc       $rndkey,$inout2,$inout2
 247         movbe           0x10($in0),%r12
 248         vpalignr        \$8,$Z0,$Z0,$Ii         # 1st phase
 249         vpclmulqdq      \$0x10,$Hkey,$Z0,$Z0
 250         mov             %r13,0x60+8(%rsp)
 251           vaesenc       $rndkey,$inout3,$inout3
 252         mov             %r12,0x68+8(%rsp)
 253           vaesenc       $rndkey,$inout4,$inout4
 254           vmovups       0x80-0x80($key),$T1     # borrow $T1 for $rndkey
 255           vaesenc       $rndkey,$inout5,$inout5
 256
 257           vaesenc       $T1,$inout0,$inout0
 258           vmovups       0x90-0x80($key),$rndkey
 259           vaesenc       $T1,$inout1,$inout1
 260         vpsrldq         \$8,$Z2,$Z2
 261           vaesenc       $T1,$inout2,$inout2
 262         vpxor           $Z2,$Z3,$Z3
 263           vaesenc       $T1,$inout3,$inout3
 264         vpxor           $Ii,$Z0,$Z0
 265         movbe           0x08($in0),%r13
 266           vaesenc       $T1,$inout4,$inout4
 267         movbe           0x00($in0),%r12
 268           vaesenc       $T1,$inout5,$inout5
 269           vmovups       0xa0-0x80($key),$T1
 270           cmp           \$11,$rounds
 271           jb            .Lenc_tail              # 128-bit key
 272
 273           vaesenc       $rndkey,$inout0,$inout0
 274           vaesenc       $rndkey,$inout1,$inout1
 275           vaesenc       $rndkey,$inout2,$inout2
 276           vaesenc       $rndkey,$inout3,$inout3
 277           vaesenc       $rndkey,$inout4,$inout4
 278           vaesenc       $rndkey,$inout5,$inout5
 279
 280           vaesenc       $T1,$inout0,$inout0
 281           vaesenc       $T1,$inout1,$inout1
 282           vaesenc       $T1,$inout2,$inout2
 283           vaesenc       $T1,$inout3,$inout3
 284           vaesenc       $T1,$inout4,$inout4
 285           vmovups       0xb0-0x80($key),$rndkey
 286           vaesenc       $T1,$inout5,$inout5
 287           vmovups       0xc0-0x80($key),$T1
 288           je            .Lenc_tail              # 192-bit key
 289
 290           vaesenc       $rndkey,$inout0,$inout0
 291           vaesenc       $rndkey,$inout1,$inout1
 292           vaesenc       $rndkey,$inout2,$inout2
 293           vaesenc       $rndkey,$inout3,$inout3
 294           vaesenc       $rndkey,$inout4,$inout4
 295           vaesenc       $rndkey,$inout5,$inout5
 296
 297           vaesenc       $T1,$inout0,$inout0
 298           vaesenc       $T1,$inout1,$inout1
 299           vaesenc       $T1,$inout2,$inout2
 300           vaesenc       $T1,$inout3,$inout3
 301           vaesenc       $T1,$inout4,$inout4
 302           vmovups       0xd0-0x80($key),$rndkey
 303           vaesenc       $T1,$inout5,$inout5
 304           vmovups       0xe0-0x80($key),$T1
 305           jmp           .Lenc_tail              # 256-bit key
 306
 307 .align  32
 308 .Lhandle_ctr32:
 309         vmovdqu         ($const),$Ii            # borrow $Ii for .Lbswap_mask
 310           vpshufb       $Ii,$T1,$Z2             # byte-swap counter
 311           vmovdqu       0x30($const),$Z1        # borrow $Z1, .Ltwo_lsb
 312           vpaddd        0x40($const),$Z2,$inout1        # .Lone_lsb
 313           vpaddd        $Z1,$Z2,$inout2
 314         vmovdqu         0x00-0x20($Xip),$Hkey   # $Hkey^1
 315           vpaddd        $Z1,$inout1,$inout3
 316           vpshufb       $Ii,$inout1,$inout1
 317           vpaddd        $Z1,$inout2,$inout4
 318           vpshufb       $Ii,$inout2,$inout2
 319           vpxor         $rndkey,$inout1,$inout1
 320           vpaddd        $Z1,$inout3,$inout5
 321           vpshufb       $Ii,$inout3,$inout3
 322           vpxor         $rndkey,$inout2,$inout2
 323           vpaddd        $Z1,$inout4,$T1         # byte-swapped next counter value
 324           vpshufb       $Ii,$inout4,$inout4
 325           vpshufb       $Ii,$inout5,$inout5
 326           vpshufb       $Ii,$T1,$T1             # next counter value
 327         jmp             .Lresume_ctr32
 328
 329 .align  32
 330 .Lenc_tail:
 331           vaesenc       $rndkey,$inout0,$inout0
 332         vmovdqu         $Z3,16+8(%rsp)          # postpone vpxor $Z3,$Xi,$Xi
 333         vpalignr        \$8,$Z0,$Z0,$Xi         # 2nd phase
 334           vaesenc       $rndkey,$inout1,$inout1
 335         vpclmulqdq      \$0x10,$Hkey,$Z0,$Z0
 336           vpxor         0x00($inp),$T1,$T2
 337           vaesenc       $rndkey,$inout2,$inout2
 338           vpxor         0x10($inp),$T1,$Ii
 339           vaesenc       $rndkey,$inout3,$inout3
 340           vpxor         0x20($inp),$T1,$Z1
 341           vaesenc       $rndkey,$inout4,$inout4
 342           vpxor         0x30($inp),$T1,$Z2
 343           vaesenc       $rndkey,$inout5,$inout5
 344           vpxor         0x40($inp),$T1,$Z3
 345           vpxor         0x50($inp),$T1,$Hkey
 346           vmovdqu       ($ivp),$T1              # load next counter value
 347
 348           vaesenclast   $T2,$inout0,$inout0
 349           vmovdqu       0x20($const),$T2        # borrow $T2, .Lone_msb
 350           vaesenclast   $Ii,$inout1,$inout1
 351          vpaddb         $T2,$T1,$Ii
 352         mov             %r13,0x70+8(%rsp)
 353         lea             0x60($inp),$inp
 354           vaesenclast   $Z1,$inout2,$inout2
 355          vpaddb         $T2,$Ii,$Z1
 356         mov             %r12,0x78+8(%rsp)
 357         lea             0x60($out),$out
 358           vmovdqu       0x00-0x80($key),$rndkey
 359           vaesenclast   $Z2,$inout3,$inout3
 360          vpaddb         $T2,$Z1,$Z2
 361           vaesenclast   $Z3, $inout4,$inout4
 362          vpaddb         $T2,$Z2,$Z3
 363           vaesenclast   $Hkey,$inout5,$inout5
 364          vpaddb         $T2,$Z3,$Hkey
 365
 366         add             \$0x60,$ret
 367         sub             \$0x6,$len
 368         jc              .L6x_done
 369
 370           vmovups       $inout0,-0x60($out)     # save output
 371          vpxor          $rndkey,$T1,$inout0
 372           vmovups       $inout1,-0x50($out)
 373          vmovdqa        $Ii,$inout1             # 0 latency
 374           vmovups       $inout2,-0x40($out)
 375          vmovdqa        $Z1,$inout2             # 0 latency
 376           vmovups       $inout3,-0x30($out)
 377          vmovdqa        $Z2,$inout3             # 0 latency
 378           vmovups       $inout4,-0x20($out)
 379          vmovdqa        $Z3,$inout4             # 0 latency
 380           vmovups       $inout5,-0x10($out)
 381          vmovdqa        $Hkey,$inout5           # 0 latency
 382         vmovdqu         0x20+8(%rsp),$Z3        # I[5]
 383         jmp             .Loop6x
 384
 385 .L6x_done:
 386         vpxor           16+8(%rsp),$Xi,$Xi      # modulo-scheduled
 387         vpxor           $Z0,$Xi,$Xi             # modulo-scheduled
 388
 389         ret
 390 .size   _aesni_ctr32_ghash_6x,.-_aesni_ctr32_ghash_6x
 391 ___
 392 ######################################################################
 393 #
 394 # size_t aesni_gcm_[en|de]crypt(const void *inp, void *out, size_t len,
 395 #               const AES_KEY *key, unsigned char iv[16],
 396 #               struct { u128 Xi,H,Htbl[9]; } *Xip);
 397 $code.=<<___;
 398 .globl  aesni_gcm_decrypt
 399 .type   aesni_gcm_decrypt,\@function,6
 400 .align  32
 401 aesni_gcm_decrypt:
 402         xor     $ret,$ret
 403         cmp     \$0x60,$len                     # minimal accepted length
 404         jb      .Lgcm_dec_abort
 405
 406         lea     (%rsp),%rax                     # save stack pointer
 407         push    %rbx
 408         push    %rbp
 409         push    %r12
 410         push    %r13
 411         push    %r14
 412         push    %r15
 413 ___
 414 $code.=<<___ if ($win64);
 415         lea     -0xa8(%rsp),%rsp
 416         movaps  %xmm6,-0xd8(%rax)
 417         movaps  %xmm7,-0xc8(%rax)
 418         movaps  %xmm8,-0xb8(%rax)
 419         movaps  %xmm9,-0xa8(%rax)
 420         movaps  %xmm10,-0x98(%rax)
 421         movaps  %xmm11,-0x88(%rax)
 422         movaps  %xmm12,-0x78(%rax)
 423         movaps  %xmm13,-0x68(%rax)
 424         movaps  %xmm14,-0x58(%rax)
 425         movaps  %xmm15,-0x48(%rax)
 426 .Lgcm_dec_body:
 427 ___
 428 $code.=<<___;
 429         vzeroupper
 430
 431         vmovdqu         ($ivp),$T1              # input counter value
 432         add             \$-128,%rsp
 433         mov             12($ivp),$counter
 434         lea             .Lbswap_mask(%rip),$const
 435         lea             -0x80($key),$in0        # borrow $in0
 436         mov             \$0xf80,$end0           # borrow $end0
 437         vmovdqu         ($Xip),$Xi              # load Xi
 438         and             \$-128,%rsp             # ensure stack alignment
 439         vmovdqu         ($const),$Ii            # borrow $Ii for .Lbswap_mask
 440         lea             0x80($key),$key         # size optimization
 441         lea             0x20+0x20($Xip),$Xip    # size optimization
 442         mov             0xf0-0x80($key),$rounds
 443         vpshufb         $Ii,$Xi,$Xi
 444
 445         and             $end0,$in0
 446         and             %rsp,$end0
 447         sub             $in0,$end0
 448         jc              .Ldec_no_key_aliasing
 449         cmp             \$768,$end0
 450         jnc             .Ldec_no_key_aliasing
 451         sub             $end0,%rsp              # avoid aliasing with key
 452 .Ldec_no_key_aliasing:
 453
 454         vmovdqu         0x50($inp),$Z3          # I[5]
 455         lea             ($inp),$in0
 456         vmovdqu         0x40($inp),$Z0
 457         lea             -0xc0($inp,$len),$end0
 458         vmovdqu         0x30($inp),$Z1
 459         shr             \$4,$len
 460         xor             $ret,$ret
 461         vmovdqu         0x20($inp),$Z2
 462          vpshufb        $Ii,$Z3,$Z3             # passed to _aesni_ctr32_ghash_6x
 463         vmovdqu         0x10($inp),$T2
 464          vpshufb        $Ii,$Z0,$Z0
 465         vmovdqu         ($inp),$Hkey
 466          vpshufb        $Ii,$Z1,$Z1
 467         vmovdqu         $Z0,0x30(%rsp)
 468          vpshufb        $Ii,$Z2,$Z2
 469         vmovdqu         $Z1,0x40(%rsp)
 470          vpshufb        $Ii,$T2,$T2
 471         vmovdqu         $Z2,0x50(%rsp)
 472          vpshufb        $Ii,$Hkey,$Hkey
 473         vmovdqu         $T2,0x60(%rsp)
 474         vmovdqu         $Hkey,0x70(%rsp)
 475
 476         call            _aesni_ctr32_ghash_6x
 477
 478         vmovups         $inout0,-0x60($out)     # save output
 479         vmovups         $inout1,-0x50($out)
 480         vmovups         $inout2,-0x40($out)
 481         vmovups         $inout3,-0x30($out)
 482         vmovups         $inout4,-0x20($out)
 483         vmovups         $inout5,-0x10($out)
 484
 485         vpshufb         ($const),$Xi,$Xi        # .Lbswap_mask
 486         vmovdqu         $Xi,-0x40($Xip)         # output Xi
 487
 488         vzeroupper
 489 ___
 490 $code.=<<___ if ($win64);
 491         movaps  -0xd8(%rax),%xmm6
 492         movaps  -0xd8(%rax),%xmm7
 493         movaps  -0xb8(%rax),%xmm8
 494         movaps  -0xa8(%rax),%xmm9
 495         movaps  -0x98(%rax),%xmm10
 496         movaps  -0x88(%rax),%xmm11
 497         movaps  -0x78(%rax),%xmm12
 498         movaps  -0x68(%rax),%xmm13
 499         movaps  -0x58(%rax),%xmm14
 500         movaps  -0x48(%rax),%xmm15
 501 ___
 502 $code.=<<___;
 503         mov     -48(%rax),%r15
 504         mov     -40(%rax),%r14
 505         mov     -32(%rax),%r13
 506         mov     -24(%rax),%r12
 507         mov     -16(%rax),%rbp
 508         mov     -8(%rax),%rbx
 509         lea     (%rax),%rsp             # restore %rsp
 510 .Lgcm_dec_abort:
 511         mov     $ret,%rax               # return value
 512         ret
 513 .size   aesni_gcm_decrypt,.-aesni_gcm_decrypt
 514 ___
 515
 516 $code.=<<___;
 517 .type   _aesni_ctr32_6x,\@abi-omnipotent
 518 .align  32
 519 _aesni_ctr32_6x:
 520         vmovdqu         0x00-0x80($key),$Z0     # borrow $Z0 for $rndkey
 521         vmovdqu         0x20($const),$T2        # borrow $T2, .Lone_msb
 522         lea             -1($rounds),%r13
 523         vmovups         0x10-0x80($key),$rndkey
 524         lea             0x20-0x80($key),%r12
 525         vpxor           $Z0,$T1,$inout0
 526         add             \$`6<<24`,$counter
 527         jc              .Lhandle_ctr32_2
 528         vpaddb          $T2,$T1,$inout1
 529         vpaddb          $T2,$inout1,$inout2
 530         vpxor           $Z0,$inout1,$inout1
 531         vpaddb          $T2,$inout2,$inout3
 532         vpxor           $Z0,$inout2,$inout2
 533         vpaddb          $T2,$inout3,$inout4
 534         vpxor           $Z0,$inout3,$inout3
 535         vpaddb          $T2,$inout4,$inout5
 536         vpxor           $Z0,$inout4,$inout4
 537         vpaddb          $T2,$inout5,$T1
 538         vpxor           $Z0,$inout5,$inout5
 539         jmp             .Loop_ctr32
 540
 541 .align  16
 542 .Loop_ctr32:
 543         vaesenc         $rndkey,$inout0,$inout0
 544         vaesenc         $rndkey,$inout1,$inout1
 545         vaesenc         $rndkey,$inout2,$inout2
 546         vaesenc         $rndkey,$inout3,$inout3
 547         vaesenc         $rndkey,$inout4,$inout4
 548         vaesenc         $rndkey,$inout5,$inout5
 549         vmovups         (%r12),$rndkey
 550         lea             0x10(%r12),%r12
 551         dec             %r13d
 552         jnz             .Loop_ctr32
 553
 554         vmovdqu         (%r12),$Hkey            # last round key
 555         vaesenc         $rndkey,$inout0,$inout0
 556         vpxor           0x00($inp),$Hkey,$Z0
 557         vaesenc         $rndkey,$inout1,$inout1
 558         vpxor           0x10($inp),$Hkey,$Z1
 559         vaesenc         $rndkey,$inout2,$inout2
 560         vpxor           0x20($inp),$Hkey,$Z2
 561         vaesenc         $rndkey,$inout3,$inout3
 562         vpxor           0x30($inp),$Hkey,$Xi
 563         vaesenc         $rndkey,$inout4,$inout4
 564         vpxor           0x40($inp),$Hkey,$T2
 565         vaesenc         $rndkey,$inout5,$inout5
 566         vpxor           0x50($inp),$Hkey,$Hkey
 567         lea             0x60($inp),$inp
 568
 569         vaesenclast     $Z0,$inout0,$inout0
 570         vaesenclast     $Z1,$inout1,$inout1
 571         vaesenclast     $Z2,$inout2,$inout2
 572         vaesenclast     $Xi,$inout3,$inout3
 573         vaesenclast     $T2,$inout4,$inout4
 574         vaesenclast     $Hkey,$inout5,$inout5
 575         vmovups         $inout0,0x00($out)
 576         vmovups         $inout1,0x10($out)
 577         vmovups         $inout2,0x20($out)
 578         vmovups         $inout3,0x30($out)
 579         vmovups         $inout4,0x40($out)
 580         vmovups         $inout5,0x50($out)
 581         lea             0x60($out),$out
 582
 583         ret
 584 .align  32
 585 .Lhandle_ctr32_2:
 586         vpshufb         $Ii,$T1,$Z2             # byte-swap counter
 587         vmovdqu         0x30($const),$Z1        # borrow $Z1, .Ltwo_lsb
 588         vpaddd          0x40($const),$Z2,$inout1        # .Lone_lsb
 589         vpaddd          $Z1,$Z2,$inout2
 590         vpaddd          $Z1,$inout1,$inout3
 591         vpshufb         $Ii,$inout1,$inout1
 592         vpaddd          $Z1,$inout2,$inout4
 593         vpshufb         $Ii,$inout2,$inout2
 594         vpxor           $Z0,$inout1,$inout1
 595         vpaddd          $Z1,$inout3,$inout5
 596         vpshufb         $Ii,$inout3,$inout3
 597         vpxor           $Z0,$inout2,$inout2
 598         vpaddd          $Z1,$inout4,$T1         # byte-swapped next counter value
 599         vpshufb         $Ii,$inout4,$inout4
 600         vpxor           $Z0,$inout3,$inout3
 601         vpshufb         $Ii,$inout5,$inout5
 602         vpxor           $Z0,$inout4,$inout4
 603         vpshufb         $Ii,$T1,$T1             # next counter value
 604         vpxor           $Z0,$inout5,$inout5
 605         jmp     .Loop_ctr32
 606 .size   _aesni_ctr32_6x,.-_aesni_ctr32_6x
 607
 608 .globl  aesni_gcm_encrypt
 609 .type   aesni_gcm_encrypt,\@function,6
 610 .align  32
 611 aesni_gcm_encrypt:
 612         xor     $ret,$ret
 613         cmp     \$0x60*3,$len                   # minimal accepted length
 614         jb      .Lgcm_enc_abort
 615
 616         lea     (%rsp),%rax                     # save stack pointer
 617         push    %rbx
 618         push    %rbp
 619         push    %r12
 620         push    %r13
 621         push    %r14
 622         push    %r15
 623 ___
 624 $code.=<<___ if ($win64);
 625         lea     -0xa8(%rsp),%rsp
 626         movaps  %xmm6,-0xd8(%rax)
 627         movaps  %xmm7,-0xc8(%rax)
 628         movaps  %xmm8,-0xb8(%rax)
 629         movaps  %xmm9,-0xa8(%rax)
 630         movaps  %xmm10,-0x98(%rax)
 631         movaps  %xmm11,-0x88(%rax)
 632         movaps  %xmm12,-0x78(%rax)
 633         movaps  %xmm13,-0x68(%rax)
 634         movaps  %xmm14,-0x58(%rax)
 635         movaps  %xmm15,-0x48(%rax)
 636 .Lgcm_enc_body:
 637 ___
 638 $code.=<<___;
 639         vzeroupper
 640
 641         vmovdqu         ($ivp),$T1              # input counter value
 642         add             \$-128,%rsp
 643         mov             12($ivp),$counter
 644         lea             .Lbswap_mask(%rip),$const
 645         lea             -0x80($key),$in0        # borrow $in0
 646         mov             \$0xf80,$end0           # borrow $end0
 647         lea             0x80($key),$key         # size optimization
 648         vmovdqu         ($const),$Ii            # borrow $Ii for .Lbswap_mask
 649         and             \$-128,%rsp             # ensure stack alignment
 650         mov             0xf0-0x80($key),$rounds
 651
 652         and             $end0,$in0
 653         and             %rsp,$end0
 654         sub             $in0,$end0
 655         jc              .Lenc_no_key_aliasing
 656         cmp             \$768,$end0
 657         jnc             .Lenc_no_key_aliasing
 658         sub             $end0,%rsp              # avoid aliasing with key
 659 .Lenc_no_key_aliasing:
 660
 661         lea             ($out),$in0
 662         lea             -0xc0($out,$len),$end0
 663         shr             \$4,$len
 664
 665         call            _aesni_ctr32_6x
 666         vpshufb         $Ii,$inout0,$Xi         # save bswapped output on stack
 667         vpshufb         $Ii,$inout1,$T2
 668         vmovdqu         $Xi,0x70(%rsp)
 669         vpshufb         $Ii,$inout2,$Z0
 670         vmovdqu         $T2,0x60(%rsp)
 671         vpshufb         $Ii,$inout3,$Z1
 672         vmovdqu         $Z0,0x50(%rsp)
 673         vpshufb         $Ii,$inout4,$Z2
 674         vmovdqu         $Z1,0x40(%rsp)
 675         vpshufb         $Ii,$inout5,$Z3         # passed to _aesni_ctr32_ghash_6x
 676         vmovdqu         $Z2,0x30(%rsp)
 677
 678         call            _aesni_ctr32_6x
 679
 680         vmovdqu         ($Xip),$Xi              # load Xi
 681         lea             0x20+0x20($Xip),$Xip    # size optimization
 682         sub             \$12,$len
 683         mov             \$0x60*2,$ret
 684         vpshufb         $Ii,$Xi,$Xi
 685
 686         call            _aesni_ctr32_ghash_6x
 687         vmovdqu         0x20(%rsp),$Z3          # I[5]
 688          vmovdqu        ($const),$Ii            # borrow $Ii for .Lbswap_mask
 689         vmovdqu         0x00-0x20($Xip),$Hkey   # $Hkey^1
 690         vpunpckhqdq     $Z3,$Z3,$T1
 691         vmovdqu         0x20-0x20($Xip),$rndkey # borrow $rndkey for $HK
 692          vmovups        $inout0,-0x60($out)     # save output
 693          vpshufb        $Ii,$inout0,$inout0     # but keep bswapped copy
 694         vpxor           $Z3,$T1,$T1
 695          vmovups        $inout1,-0x50($out)
 696          vpshufb        $Ii,$inout1,$inout1
 697          vmovups        $inout2,-0x40($out)
 698          vpshufb        $Ii,$inout2,$inout2
 699          vmovups        $inout3,-0x30($out)
 700          vpshufb        $Ii,$inout3,$inout3
 701          vmovups        $inout4,-0x20($out)
 702          vpshufb        $Ii,$inout4,$inout4
 703          vmovups        $inout5,-0x10($out)
 704          vpshufb        $Ii,$inout5,$inout5
 705          vmovdqu        $inout0,0x10(%rsp)      # free $inout0
 706 ___
 707 { my ($HK,$T3)=($rndkey,$inout0);
 708
 709 $code.=<<___;
 710          vmovdqu        0x30(%rsp),$Z2          # I[4]
 711          vmovdqu        0x10-0x20($Xip),$Ii     # borrow $Ii for $Hkey^2
 712          vpunpckhqdq    $Z2,$Z2,$T2
 713         vpclmulqdq      \$0x00,$Hkey,$Z3,$Z1
 714          vpxor          $Z2,$T2,$T2
 715         vpclmulqdq      \$0x11,$Hkey,$Z3,$Z3
 716         vpclmulqdq      \$0x00,$HK,$T1,$T1
 717
 718          vmovdqu        0x40(%rsp),$T3          # I[3]
 719         vpclmulqdq      \$0x00,$Ii,$Z2,$Z0
 720          vmovdqu        0x30-0x20($Xip),$Hkey   # $Hkey^3
 721         vpxor           $Z1,$Z0,$Z0
 722          vpunpckhqdq    $T3,$T3,$Z1
 723         vpclmulqdq      \$0x11,$Ii,$Z2,$Z2
 724          vpxor          $T3,$Z1,$Z1
 725         vpxor           $Z3,$Z2,$Z2
 726         vpclmulqdq      \$0x10,$HK,$T2,$T2
 727          vmovdqu        0x50-0x20($Xip),$HK
 728         vpxor           $T1,$T2,$T2
 729
 730          vmovdqu        0x50(%rsp),$T1          # I[2]
 731         vpclmulqdq      \$0x00,$Hkey,$T3,$Z3
 732          vmovdqu        0x40-0x20($Xip),$Ii     # borrow $Ii for $Hkey^4
 733         vpxor           $Z0,$Z3,$Z3
 734          vpunpckhqdq    $T1,$T1,$Z0
 735         vpclmulqdq      \$0x11,$Hkey,$T3,$T3
 736          vpxor          $T1,$Z0,$Z0
 737         vpxor           $Z2,$T3,$T3
 738         vpclmulqdq      \$0x00,$HK,$Z1,$Z1
 739         vpxor           $T2,$Z1,$Z1
 740
 741          vmovdqu        0x60(%rsp),$T2          # I[1]
 742         vpclmulqdq      \$0x00,$Ii,$T1,$Z2
 743          vmovdqu        0x60-0x20($Xip),$Hkey   # $Hkey^5
 744         vpxor           $Z3,$Z2,$Z2
 745          vpunpckhqdq    $T2,$T2,$Z3
 746         vpclmulqdq      \$0x11,$Ii,$T1,$T1
 747          vpxor          $T2,$Z3,$Z3
 748         vpxor           $T3,$T1,$T1
 749         vpclmulqdq      \$0x10,$HK,$Z0,$Z0
 750          vmovdqu        0x80-0x20($Xip),$HK
 751         vpxor           $Z1,$Z0,$Z0
 752
 753          vpxor          0x70(%rsp),$Xi,$Xi      # accumulate I[0]
 754         vpclmulqdq      \$0x00,$Hkey,$T2,$Z1
 755          vmovdqu        0x70-0x20($Xip),$Ii     # borrow $Ii for $Hkey^6
 756          vpunpckhqdq    $Xi,$Xi,$T3
 757         vpxor           $Z2,$Z1,$Z1
 758         vpclmulqdq      \$0x11,$Hkey,$T2,$T2
 759          vpxor          $Xi,$T3,$T3
 760         vpxor           $T1,$T2,$T2
 761         vpclmulqdq      \$0x00,$HK,$Z3,$Z3
 762         vpxor           $Z0,$Z3,$Z0
 763
 764         vpclmulqdq      \$0x00,$Ii,$Xi,$Z2
 765          vmovdqu        0x00-0x20($Xip),$Hkey   # $Hkey^1
 766          vpunpckhqdq    $inout5,$inout5,$T1
 767         vpclmulqdq      \$0x11,$Ii,$Xi,$Xi
 768          vpxor          $inout5,$T1,$T1
 769         vpxor           $Z1,$Z2,$Z1
 770         vpclmulqdq      \$0x10,$HK,$T3,$T3
 771          vmovdqu        0x20-0x20($Xip),$HK
 772         vpxor           $T2,$Xi,$Z3
 773         vpxor           $Z0,$T3,$Z2
 774
 775          vmovdqu        0x10-0x20($Xip),$Ii     # borrow $Ii for $Hkey^2
 776           vpxor         $Z1,$Z3,$T3             # aggregated Karatsuba post-processing
 777         vpclmulqdq      \$0x00,$Hkey,$inout5,$Z0
 778           vpxor         $T3,$Z2,$Z2
 779          vpunpckhqdq    $inout4,$inout4,$T2
 780         vpclmulqdq      \$0x11,$Hkey,$inout5,$inout5
 781          vpxor          $inout4,$T2,$T2
 782           vpslldq       \$8,$Z2,$T3
 783         vpclmulqdq      \$0x00,$HK,$T1,$T1
 784           vpxor         $T3,$Z1,$Xi
 785           vpsrldq       \$8,$Z2,$Z2
 786           vpxor         $Z2,$Z3,$Z3
 787
 788         vpclmulqdq      \$0x00,$Ii,$inout4,$Z1
 789          vmovdqu        0x30-0x20($Xip),$Hkey   # $Hkey^3
 790         vpxor           $Z0,$Z1,$Z1
 791          vpunpckhqdq    $inout3,$inout3,$T3
 792         vpclmulqdq      \$0x11,$Ii,$inout4,$inout4
 793          vpxor          $inout3,$T3,$T3
 794         vpxor           $inout5,$inout4,$inout4
 795           vpalignr      \$8,$Xi,$Xi,$inout5     # 1st phase
 796         vpclmulqdq      \$0x10,$HK,$T2,$T2
 797          vmovdqu        0x50-0x20($Xip),$HK
 798         vpxor           $T1,$T2,$T2
 799
 800         vpclmulqdq      \$0x00,$Hkey,$inout3,$Z0
 801          vmovdqu        0x40-0x20($Xip),$Ii     # borrow $Ii for $Hkey^4
 802         vpxor           $Z1,$Z0,$Z0
 803          vpunpckhqdq    $inout2,$inout2,$T1
 804         vpclmulqdq      \$0x11,$Hkey,$inout3,$inout3
 805          vpxor          $inout2,$T1,$T1
 806         vpxor           $inout4,$inout3,$inout3
 807           vxorps        0x10(%rsp),$Z3,$Z3      # accumulate $inout0
 808         vpclmulqdq      \$0x00,$HK,$T3,$T3
 809         vpxor           $T2,$T3,$T3
 810
 811           vpclmulqdq    \$0x10,0x10($const),$Xi,$Xi
 812           vxorps        $inout5,$Xi,$Xi
 813
 814         vpclmulqdq      \$0x00,$Ii,$inout2,$Z1
 815          vmovdqu        0x60-0x20($Xip),$Hkey   # $Hkey^5
 816         vpxor           $Z0,$Z1,$Z1
 817          vpunpckhqdq    $inout1,$inout1,$T2
 818         vpclmulqdq      \$0x11,$Ii,$inout2,$inout2
 819          vpxor          $inout1,$T2,$T2
 820           vpalignr      \$8,$Xi,$Xi,$inout5     # 2nd phase
 821         vpxor           $inout3,$inout2,$inout2
 822         vpclmulqdq      \$0x10,$HK,$T1,$T1
 823          vmovdqu        0x80-0x20($Xip),$HK
 824         vpxor           $T3,$T1,$T1
 825
 826           vxorps        $Z3,$inout5,$inout5
 827           vpclmulqdq    \$0x10,0x10($const),$Xi,$Xi
 828           vxorps        $inout5,$Xi,$Xi
 829
 830         vpclmulqdq      \$0x00,$Hkey,$inout1,$Z0
 831          vmovdqu        0x70-0x20($Xip),$Ii     # borrow $Ii for $Hkey^6
 832         vpxor           $Z1,$Z0,$Z0
 833          vpunpckhqdq    $Xi,$Xi,$T3
 834         vpclmulqdq      \$0x11,$Hkey,$inout1,$inout1
 835          vpxor          $Xi,$T3,$T3
 836         vpxor           $inout2,$inout1,$inout1
 837         vpclmulqdq      \$0x00,$HK,$T2,$T2
 838         vpxor           $T1,$T2,$T2
 839
 840         vpclmulqdq      \$0x00,$Ii,$Xi,$Z1
 841         vpclmulqdq      \$0x11,$Ii,$Xi,$Z3
 842         vpxor           $Z0,$Z1,$Z1
 843         vpclmulqdq      \$0x10,$HK,$T3,$Z2
 844         vpxor           $inout1,$Z3,$Z3
 845         vpxor           $T2,$Z2,$Z2
 846
 847         vpxor           $Z1,$Z3,$Z0             # aggregated Karatsuba post-processing
 848         vpxor           $Z0,$Z2,$Z2
 849         vpslldq         \$8,$Z2,$T1
 850         vmovdqu         0x10($const),$Hkey      # .Lpoly
 851         vpsrldq         \$8,$Z2,$Z2
 852         vpxor           $T1,$Z1,$Xi
 853         vpxor           $Z2,$Z3,$Z3
 854
 855         vpalignr        \$8,$Xi,$Xi,$T2         # 1st phase
 856         vpclmulqdq      \$0x10,$Hkey,$Xi,$Xi
 857         vpxor           $T2,$Xi,$Xi
 858
 859         vpalignr        \$8,$Xi,$Xi,$T2         # 2nd phase
 860         vpclmulqdq      \$0x10,$Hkey,$Xi,$Xi
 861         vpxor           $Z3,$T2,$T2
 862         vpxor           $T2,$Xi,$Xi
 863 ___
 864 }
 865 $code.=<<___;
 866         vpshufb         ($const),$Xi,$Xi        # .Lbswap_mask
 867         vmovdqu         $Xi,-0x40($Xip)         # output Xi
 868
 869         vzeroupper
 870 ___
 871 $code.=<<___ if ($win64);
 872         movaps  -0xd8(%rax),%xmm6
 873         movaps  -0xc8(%rax),%xmm7
 874         movaps  -0xb8(%rax),%xmm8
 875         movaps  -0xa8(%rax),%xmm9
 876         movaps  -0x98(%rax),%xmm10
 877         movaps  -0x88(%rax),%xmm11
 878         movaps  -0x78(%rax),%xmm12
 879         movaps  -0x68(%rax),%xmm13
 880         movaps  -0x58(%rax),%xmm14
 881         movaps  -0x48(%rax),%xmm15
 882 ___
 883 $code.=<<___;
 884         mov     -48(%rax),%r15
 885         mov     -40(%rax),%r14
 886         mov     -32(%rax),%r13
 887         mov     -24(%rax),%r12
 888         mov     -16(%rax),%rbp
 889         mov     -8(%rax),%rbx
 890         lea     (%rax),%rsp             # restore %rsp
 891 .Lgcm_enc_abort:
 892         mov     $ret,%rax               # return value
 893         ret
 894 .size   aesni_gcm_encrypt,.-aesni_gcm_encrypt
 895 ___
 896
 897 $code.=<<___;
 898 .align  64
 899 .Lbswap_mask:
 900         .byte   15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
 901 .Lpoly:
 902         .byte   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2
 903 .Lone_msb:
 904         .byte   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1
 905 .Ltwo_lsb:
 906         .byte   2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 907 .Lone_lsb:
 908         .byte   1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 909 .asciz  "AES-NI GCM module for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
 910 .align  64
 911 ___
 912 if ($win64) {
 913 $rec="%rcx";
 914 $frame="%rdx";
 915 $context="%r8";
 916 $disp="%r9";
 917
 918 $code.=<<___
 919 .extern __imp_RtlVirtualUnwind
 920 .type   gcm_se_handler,\@abi-omnipotent
 921 .align  16
 922 gcm_se_handler:
 923         push    %rsi
 924         push    %rdi
 925         push    %rbx
 926         push    %rbp
 927         push    %r12
 928         push    %r13
 929         push    %r14
 930         push    %r15
 931         pushfq
 932         sub     \$64,%rsp
 933
 934         mov     120($context),%rax      # pull context->Rax
 935         mov     248($context),%rbx      # pull context->Rip
 936
 937         mov     8($disp),%rsi           # disp->ImageBase
 938         mov     56($disp),%r11          # disp->HandlerData
 939
 940         mov     0(%r11),%r10d           # HandlerData[0]
 941         lea     (%rsi,%r10),%r10        # prologue label
 942         cmp     %r10,%rbx               # context->Rip<prologue label
 943         jb      .Lcommon_seh_tail
 944
 945         mov     152($context),%rax      # pull context->Rsp
 946
 947         mov     4(%r11),%r10d           # HandlerData[1]
 948         lea     (%rsi,%r10),%r10        # epilogue label
 949         cmp     %r10,%rbx               # context->Rip>=epilogue label
 950         jae     .Lcommon_seh_tail
 951
 952         mov     120($context),%rax      # pull context->Rax
 953
 954         mov     -48(%rax),%r15
 955         mov     -40(%rax),%r14
 956         mov     -32(%rax),%r13
 957         mov     -24(%rax),%r12
 958         mov     -16(%rax),%rbp
 959         mov     -8(%rax),%rbx
 960         mov     %r15,240($context)
 961         mov     %r14,232($context)
 962         mov     %r13,224($context)
 963         mov     %r12,216($context)
 964         mov     %rbp,160($context)
 965         mov     %rbx,144($context)
 966
 967         lea     -0xd8(%rax),%rsi        # %xmm save area
 968         lea     512($context),%rdi      # & context.Xmm6
 969         mov     \$20,%ecx               # 10*sizeof(%xmm0)/sizeof(%rax)
 970         .long   0xa548f3fc              # cld; rep movsq
 971
 972 .Lcommon_seh_tail:
 973         mov     8(%rax),%rdi
 974         mov     16(%rax),%rsi
 975         mov     %rax,152($context)      # restore context->Rsp
 976         mov     %rsi,168($context)      # restore context->Rsi
 977         mov     %rdi,176($context)      # restore context->Rdi
 978
 979         mov     40($disp),%rdi          # disp->ContextRecord
 980         mov     $context,%rsi           # context
 981         mov     \$154,%ecx              # sizeof(CONTEXT)
 982         .long   0xa548f3fc              # cld; rep movsq
 983
 984         mov     $disp,%rsi
 985         xor     %rcx,%rcx               # arg1, UNW_FLAG_NHANDLER
 986         mov     8(%rsi),%rdx            # arg2, disp->ImageBase
 987         mov     0(%rsi),%r8             # arg3, disp->ControlPc
 988         mov     16(%rsi),%r9            # arg4, disp->FunctionEntry
 989         mov     40(%rsi),%r10           # disp->ContextRecord
 990         lea     56(%rsi),%r11           # &disp->HandlerData
 991         lea     24(%rsi),%r12           # &disp->EstablisherFrame
 992         mov     %r10,32(%rsp)           # arg5
 993         mov     %r11,40(%rsp)           # arg6
 994         mov     %r12,48(%rsp)           # arg7
 995         mov     %rcx,56(%rsp)           # arg8, (NULL)
 996         call    *__imp_RtlVirtualUnwind(%rip)
 997
 998         mov     \$1,%eax                # ExceptionContinueSearch
 999         add     \$64,%rsp
1000         popfq
1001         pop     %r15
1002         pop     %r14
1003         pop     %r13
1004         pop     %r12
1005         pop     %rbp
1006         pop     %rbx
1007         pop     %rdi
1008         pop     %rsi
1009         ret
1010 .size   gcm_se_handler,.-gcm_se_handler
1011
1012 .section        .pdata
1013 .align  4
1014         .rva    .LSEH_begin_aesni_gcm_decrypt
1015         .rva    .LSEH_end_aesni_gcm_decrypt
1016         .rva    .LSEH_gcm_dec_info
1017
1018         .rva    .LSEH_begin_aesni_gcm_encrypt
1019         .rva    .LSEH_end_aesni_gcm_encrypt
1020         .rva    .LSEH_gcm_enc_info
1021 .section        .xdata
1022 .align  8
1023 .LSEH_gcm_dec_info:
1024         .byte   9,0,0,0
1025         .rva    gcm_se_handler
1026         .rva    .Lgcm_dec_body,.Lgcm_dec_abort
1027 .LSEH_gcm_enc_info:
1028         .byte   9,0,0,0
1029         .rva    gcm_se_handler
1030         .rva    .Lgcm_enc_body,.Lgcm_enc_abort
1031 ___
1032 }
1033 }}} else {{{
1034 $code=<<___;    # assembler is too old
1035 .text
1036
1037 .globl  aesni_gcm_encrypt
1038 .type   aesni_gcm_encrypt,\@abi-omnipotent
1039 aesni_gcm_encrypt:
1040         xor     %eax,%eax
1041         ret
1042 .size   aesni_gcm_encrypt,.-aesni_gcm_encrypt
1043
1044 .globl  aesni_gcm_decrypt
1045 .type   aesni_gcm_decrypt,\@abi-omnipotent
1046 aesni_gcm_decrypt:
1047         xor     %eax,%eax
1048         ret
1049 .size   aesni_gcm_decrypt,.-aesni_gcm_decrypt
1050 ___
1051 }}}
1052
1053 $code =~ s/\`([^\`]*)\`/eval($1)/gem;
1054
1055 print $code;
1056
1057 close STDOUT;