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

   1 #! /usr/bin/env perl
   2 # Copyright 2013-2020 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 #
  18 # AES-NI-CTR+GHASH stitch.
  19 #
  20 # February 2013
  21 #
  22 # OpenSSL GCM implementation is organized in such way that its
  23 # performance is rather close to the sum of its streamed components,
  24 # in the context parallelized AES-NI CTR and modulo-scheduled
  25 # PCLMULQDQ-enabled GHASH. Unfortunately, as no stitch implementation
  26 # was observed to perform significantly better than the sum of the
  27 # components on contemporary CPUs, the effort was deemed impossible to
  28 # justify. This module is based on combination of Intel submissions,
  29 # [1] and [2], with MOVBE twist suggested by Ilya Albrekht and Max
  30 # Locktyukhin of Intel Corp. who verified that it reduces shuffles
  31 # pressure with notable relative improvement, achieving 1.0 cycle per
  32 # byte processed with 128-bit key on Haswell processor, 0.74 - on
  33 # Broadwell, 0.63 - on Skylake... [Mentioned results are raw profiled
  34 # measurements for favourable packet size, one divisible by 96.
  35 # Applications using the EVP interface will observe a few percent
  36 # worse performance.]
  37 #
  38 # Knights Landing processes 1 byte in 1.25 cycles (measured with EVP).
  39 #
  40 # [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest
  41 # [2] http://www.intel.com/content/dam/www/public/us/en/documents/software-support/enabling-high-performance-gcm.pdf
  42
  43 # $output is the last argument if it looks like a file (it has an extension)
  44 # $flavour is the first argument if it doesn't look like a file
  45 $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
  46 $flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
  47
  48 $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
  49
  50 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
  51 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
  52 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
  53 die "can't locate x86_64-xlate.pl";
  54
  55 if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
  56                 =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
  57         $avx = ($1>=2.20) + ($1>=2.22);
  58 }
  59
  60 if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
  61             `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) {
  62         $avx = ($1>=2.09) + ($1>=2.10);
  63 }
  64
  65 if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
  66             `ml64 2>&1` =~ /Version ([0-9]+)\./) {
  67         $avx = ($1>=10) + ($1>=11);
  68 }
  69
  70 if (!$avx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+\.[0-9]+)/) {
  71         $avx = ($2>=3.0) + ($2>3.0);
  72 }
  73
  74 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""
  75     or die "can't call $xlate: $!";
  76 *STDOUT=*OUT;
  77
  78 if ($avx>1) {{{
  79
  80 ($inp,$out,$len,$key,$ivp,$Xip)=("%rdi","%rsi","%rdx","%rcx","%r8","%r9");
  81
  82 ($Ii,$T1,$T2,$Hkey,
  83  $Z0,$Z1,$Z2,$Z3,$Xi) = map("%xmm$_",(0..8));
  84
  85 ($inout0,$inout1,$inout2,$inout3,$inout4,$inout5,$rndkey) = map("%xmm$_",(9..15));
  86
  87 ($counter,$rounds,$ret,$const,$in0,$end0)=("%ebx","%ebp","%r10","%r11","%r14","%r15");
  88
  89 $code=<<___;
  90 .text
  91
  92 .type   _aesni_ctr32_ghash_6x,\@abi-omnipotent
  93 .align  32
  94 _aesni_ctr32_ghash_6x:
  95 .cfi_startproc
  96         vmovdqu         0x20($const),$T2        # borrow $T2, .Lone_msb
  97         sub             \$6,$len
  98         vpxor           $Z0,$Z0,$Z0             # $Z0   = 0
  99         vmovdqu         0x00-0x80($key),$rndkey
 100         vpaddb          $T2,$T1,$inout1
 101         vpaddb          $T2,$inout1,$inout2
 102         vpaddb          $T2,$inout2,$inout3
 103         vpaddb          $T2,$inout3,$inout4
 104         vpaddb          $T2,$inout4,$inout5
 105         vpxor           $rndkey,$T1,$inout0
 106         vmovdqu         $Z0,16+8(%rsp)          # "$Z3" = 0
 107         jmp             .Loop6x
 108
 109 .align  32
 110 .Loop6x:
 111         add             \$`6<<24`,$counter
 112         jc              .Lhandle_ctr32          # discard $inout[1-5]?
 113         vmovdqu         0x00-0x20($Xip),$Hkey   # $Hkey^1
 114           vpaddb        $T2,$inout5,$T1         # next counter value
 115           vpxor         $rndkey,$inout1,$inout1
 116           vpxor         $rndkey,$inout2,$inout2
 117
 118 .Lresume_ctr32:
 119         vmovdqu         $T1,($ivp)              # save next counter value
 120         vpclmulqdq      \$0x10,$Hkey,$Z3,$Z1
 121           vpxor         $rndkey,$inout3,$inout3
 122           vmovups       0x10-0x80($key),$T2     # borrow $T2 for $rndkey
 123         vpclmulqdq      \$0x01,$Hkey,$Z3,$Z2
 124         xor             %r12,%r12
 125         cmp             $in0,$end0
 126
 127           vaesenc       $T2,$inout0,$inout0
 128         vmovdqu         0x30+8(%rsp),$Ii        # I[4]
 129           vpxor         $rndkey,$inout4,$inout4
 130         vpclmulqdq      \$0x00,$Hkey,$Z3,$T1
 131           vaesenc       $T2,$inout1,$inout1
 132           vpxor         $rndkey,$inout5,$inout5
 133         setnc           %r12b
 134         vpclmulqdq      \$0x11,$Hkey,$Z3,$Z3
 135           vaesenc       $T2,$inout2,$inout2
 136         vmovdqu         0x10-0x20($Xip),$Hkey   # $Hkey^2
 137         neg             %r12
 138           vaesenc       $T2,$inout3,$inout3
 139          vpxor          $Z1,$Z2,$Z2
 140         vpclmulqdq      \$0x00,$Hkey,$Ii,$Z1
 141          vpxor          $Z0,$Xi,$Xi             # modulo-scheduled
 142           vaesenc       $T2,$inout4,$inout4
 143          vpxor          $Z1,$T1,$Z0
 144         and             \$0x60,%r12
 145           vmovups       0x20-0x80($key),$rndkey
 146         vpclmulqdq      \$0x10,$Hkey,$Ii,$T1
 147           vaesenc       $T2,$inout5,$inout5
 148
 149         vpclmulqdq      \$0x01,$Hkey,$Ii,$T2
 150         lea             ($in0,%r12),$in0
 151           vaesenc       $rndkey,$inout0,$inout0
 152          vpxor          16+8(%rsp),$Xi,$Xi      # modulo-scheduled [vpxor $Z3,$Xi,$Xi]
 153         vpclmulqdq      \$0x11,$Hkey,$Ii,$Hkey
 154          vmovdqu        0x40+8(%rsp),$Ii        # I[3]
 155           vaesenc       $rndkey,$inout1,$inout1
 156         movbe           0x58($in0),%r13
 157           vaesenc       $rndkey,$inout2,$inout2
 158         movbe           0x50($in0),%r12
 159           vaesenc       $rndkey,$inout3,$inout3
 160         mov             %r13,0x20+8(%rsp)
 161           vaesenc       $rndkey,$inout4,$inout4
 162         mov             %r12,0x28+8(%rsp)
 163         vmovdqu         0x30-0x20($Xip),$Z1     # borrow $Z1 for $Hkey^3
 164           vaesenc       $rndkey,$inout5,$inout5
 165
 166           vmovups       0x30-0x80($key),$rndkey
 167          vpxor          $T1,$Z2,$Z2
 168         vpclmulqdq      \$0x00,$Z1,$Ii,$T1
 169           vaesenc       $rndkey,$inout0,$inout0
 170          vpxor          $T2,$Z2,$Z2
 171         vpclmulqdq      \$0x10,$Z1,$Ii,$T2
 172           vaesenc       $rndkey,$inout1,$inout1
 173          vpxor          $Hkey,$Z3,$Z3
 174         vpclmulqdq      \$0x01,$Z1,$Ii,$Hkey
 175           vaesenc       $rndkey,$inout2,$inout2
 176         vpclmulqdq      \$0x11,$Z1,$Ii,$Z1
 177          vmovdqu        0x50+8(%rsp),$Ii        # I[2]
 178           vaesenc       $rndkey,$inout3,$inout3
 179           vaesenc       $rndkey,$inout4,$inout4
 180          vpxor          $T1,$Z0,$Z0
 181         vmovdqu         0x40-0x20($Xip),$T1     # borrow $T1 for $Hkey^4
 182           vaesenc       $rndkey,$inout5,$inout5
 183
 184           vmovups       0x40-0x80($key),$rndkey
 185          vpxor          $T2,$Z2,$Z2
 186         vpclmulqdq      \$0x00,$T1,$Ii,$T2
 187           vaesenc       $rndkey,$inout0,$inout0
 188          vpxor          $Hkey,$Z2,$Z2
 189         vpclmulqdq      \$0x10,$T1,$Ii,$Hkey
 190           vaesenc       $rndkey,$inout1,$inout1
 191         movbe           0x48($in0),%r13
 192          vpxor          $Z1,$Z3,$Z3
 193         vpclmulqdq      \$0x01,$T1,$Ii,$Z1
 194           vaesenc       $rndkey,$inout2,$inout2
 195         movbe           0x40($in0),%r12
 196         vpclmulqdq      \$0x11,$T1,$Ii,$T1
 197          vmovdqu        0x60+8(%rsp),$Ii        # I[1]
 198           vaesenc       $rndkey,$inout3,$inout3
 199         mov             %r13,0x30+8(%rsp)
 200           vaesenc       $rndkey,$inout4,$inout4
 201         mov             %r12,0x38+8(%rsp)
 202          vpxor          $T2,$Z0,$Z0
 203         vmovdqu         0x60-0x20($Xip),$T2     # borrow $T2 for $Hkey^5
 204           vaesenc       $rndkey,$inout5,$inout5
 205
 206           vmovups       0x50-0x80($key),$rndkey
 207          vpxor          $Hkey,$Z2,$Z2
 208         vpclmulqdq      \$0x00,$T2,$Ii,$Hkey
 209           vaesenc       $rndkey,$inout0,$inout0
 210          vpxor          $Z1,$Z2,$Z2
 211         vpclmulqdq      \$0x10,$T2,$Ii,$Z1
 212           vaesenc       $rndkey,$inout1,$inout1
 213         movbe           0x38($in0),%r13
 214          vpxor          $T1,$Z3,$Z3
 215         vpclmulqdq      \$0x01,$T2,$Ii,$T1
 216          vpxor          0x70+8(%rsp),$Xi,$Xi    # accumulate I[0]
 217           vaesenc       $rndkey,$inout2,$inout2
 218         movbe           0x30($in0),%r12
 219         vpclmulqdq      \$0x11,$T2,$Ii,$T2
 220           vaesenc       $rndkey,$inout3,$inout3
 221         mov             %r13,0x40+8(%rsp)
 222           vaesenc       $rndkey,$inout4,$inout4
 223         mov             %r12,0x48+8(%rsp)
 224          vpxor          $Hkey,$Z0,$Z0
 225          vmovdqu        0x70-0x20($Xip),$Hkey   # $Hkey^6
 226           vaesenc       $rndkey,$inout5,$inout5
 227
 228           vmovups       0x60-0x80($key),$rndkey
 229          vpxor          $Z1,$Z2,$Z2
 230         vpclmulqdq      \$0x10,$Hkey,$Xi,$Z1
 231           vaesenc       $rndkey,$inout0,$inout0
 232          vpxor          $T1,$Z2,$Z2
 233         vpclmulqdq      \$0x01,$Hkey,$Xi,$T1
 234           vaesenc       $rndkey,$inout1,$inout1
 235         movbe           0x28($in0),%r13
 236          vpxor          $T2,$Z3,$Z3
 237         vpclmulqdq      \$0x00,$Hkey,$Xi,$T2
 238           vaesenc       $rndkey,$inout2,$inout2
 239         movbe           0x20($in0),%r12
 240         vpclmulqdq      \$0x11,$Hkey,$Xi,$Xi
 241           vaesenc       $rndkey,$inout3,$inout3
 242         mov             %r13,0x50+8(%rsp)
 243           vaesenc       $rndkey,$inout4,$inout4
 244         mov             %r12,0x58+8(%rsp)
 245         vpxor           $Z1,$Z2,$Z2
 246           vaesenc       $rndkey,$inout5,$inout5
 247         vpxor           $T1,$Z2,$Z2
 248
 249           vmovups       0x70-0x80($key),$rndkey
 250         vpslldq         \$8,$Z2,$Z1
 251         vpxor           $T2,$Z0,$Z0
 252         vmovdqu         0x10($const),$Hkey      # .Lpoly
 253
 254           vaesenc       $rndkey,$inout0,$inout0
 255         vpxor           $Xi,$Z3,$Z3
 256           vaesenc       $rndkey,$inout1,$inout1
 257         vpxor           $Z1,$Z0,$Z0
 258         movbe           0x18($in0),%r13
 259           vaesenc       $rndkey,$inout2,$inout2
 260         movbe           0x10($in0),%r12
 261         vpalignr        \$8,$Z0,$Z0,$Ii         # 1st phase
 262         vpclmulqdq      \$0x10,$Hkey,$Z0,$Z0
 263         mov             %r13,0x60+8(%rsp)
 264           vaesenc       $rndkey,$inout3,$inout3
 265         mov             %r12,0x68+8(%rsp)
 266           vaesenc       $rndkey,$inout4,$inout4
 267           vmovups       0x80-0x80($key),$T1     # borrow $T1 for $rndkey
 268           vaesenc       $rndkey,$inout5,$inout5
 269
 270           vaesenc       $T1,$inout0,$inout0
 271           vmovups       0x90-0x80($key),$rndkey
 272           vaesenc       $T1,$inout1,$inout1
 273         vpsrldq         \$8,$Z2,$Z2
 274           vaesenc       $T1,$inout2,$inout2
 275         vpxor           $Z2,$Z3,$Z3
 276           vaesenc       $T1,$inout3,$inout3
 277         vpxor           $Ii,$Z0,$Z0
 278         movbe           0x08($in0),%r13
 279           vaesenc       $T1,$inout4,$inout4
 280         movbe           0x00($in0),%r12
 281           vaesenc       $T1,$inout5,$inout5
 282           vmovups       0xa0-0x80($key),$T1
 283           cmp           \$11,$rounds
 284           jb            .Lenc_tail              # 128-bit key
 285
 286           vaesenc       $rndkey,$inout0,$inout0
 287           vaesenc       $rndkey,$inout1,$inout1
 288           vaesenc       $rndkey,$inout2,$inout2
 289           vaesenc       $rndkey,$inout3,$inout3
 290           vaesenc       $rndkey,$inout4,$inout4
 291           vaesenc       $rndkey,$inout5,$inout5
 292
 293           vaesenc       $T1,$inout0,$inout0
 294           vaesenc       $T1,$inout1,$inout1
 295           vaesenc       $T1,$inout2,$inout2
 296           vaesenc       $T1,$inout3,$inout3
 297           vaesenc       $T1,$inout4,$inout4
 298           vmovups       0xb0-0x80($key),$rndkey
 299           vaesenc       $T1,$inout5,$inout5
 300           vmovups       0xc0-0x80($key),$T1
 301           je            .Lenc_tail              # 192-bit key
 302
 303           vaesenc       $rndkey,$inout0,$inout0
 304           vaesenc       $rndkey,$inout1,$inout1
 305           vaesenc       $rndkey,$inout2,$inout2
 306           vaesenc       $rndkey,$inout3,$inout3
 307           vaesenc       $rndkey,$inout4,$inout4
 308           vaesenc       $rndkey,$inout5,$inout5
 309
 310           vaesenc       $T1,$inout0,$inout0
 311           vaesenc       $T1,$inout1,$inout1
 312           vaesenc       $T1,$inout2,$inout2
 313           vaesenc       $T1,$inout3,$inout3
 314           vaesenc       $T1,$inout4,$inout4
 315           vmovups       0xd0-0x80($key),$rndkey
 316           vaesenc       $T1,$inout5,$inout5
 317           vmovups       0xe0-0x80($key),$T1
 318           jmp           .Lenc_tail              # 256-bit key
 319
 320 .align  32
 321 .Lhandle_ctr32:
 322         vmovdqu         ($const),$Ii            # borrow $Ii for .Lbswap_mask
 323           vpshufb       $Ii,$T1,$Z2             # byte-swap counter
 324           vmovdqu       0x30($const),$Z1        # borrow $Z1, .Ltwo_lsb
 325           vpaddd        0x40($const),$Z2,$inout1        # .Lone_lsb
 326           vpaddd        $Z1,$Z2,$inout2
 327         vmovdqu         0x00-0x20($Xip),$Hkey   # $Hkey^1
 328           vpaddd        $Z1,$inout1,$inout3
 329           vpshufb       $Ii,$inout1,$inout1
 330           vpaddd        $Z1,$inout2,$inout4
 331           vpshufb       $Ii,$inout2,$inout2
 332           vpxor         $rndkey,$inout1,$inout1
 333           vpaddd        $Z1,$inout3,$inout5
 334           vpshufb       $Ii,$inout3,$inout3
 335           vpxor         $rndkey,$inout2,$inout2
 336           vpaddd        $Z1,$inout4,$T1         # byte-swapped next counter value
 337           vpshufb       $Ii,$inout4,$inout4
 338           vpshufb       $Ii,$inout5,$inout5
 339           vpshufb       $Ii,$T1,$T1             # next counter value
 340         jmp             .Lresume_ctr32
 341
 342 .align  32
 343 .Lenc_tail:
 344           vaesenc       $rndkey,$inout0,$inout0
 345         vmovdqu         $Z3,16+8(%rsp)          # postpone vpxor $Z3,$Xi,$Xi
 346         vpalignr        \$8,$Z0,$Z0,$Xi         # 2nd phase
 347           vaesenc       $rndkey,$inout1,$inout1
 348         vpclmulqdq      \$0x10,$Hkey,$Z0,$Z0
 349           vpxor         0x00($inp),$T1,$T2
 350           vaesenc       $rndkey,$inout2,$inout2
 351           vpxor         0x10($inp),$T1,$Ii
 352           vaesenc       $rndkey,$inout3,$inout3
 353           vpxor         0x20($inp),$T1,$Z1
 354           vaesenc       $rndkey,$inout4,$inout4
 355           vpxor         0x30($inp),$T1,$Z2
 356           vaesenc       $rndkey,$inout5,$inout5
 357           vpxor         0x40($inp),$T1,$Z3
 358           vpxor         0x50($inp),$T1,$Hkey
 359           vmovdqu       ($ivp),$T1              # load next counter value
 360
 361           vaesenclast   $T2,$inout0,$inout0
 362           vmovdqu       0x20($const),$T2        # borrow $T2, .Lone_msb
 363           vaesenclast   $Ii,$inout1,$inout1
 364          vpaddb         $T2,$T1,$Ii
 365         mov             %r13,0x70+8(%rsp)
 366         lea             0x60($inp),$inp
 367           vaesenclast   $Z1,$inout2,$inout2
 368          vpaddb         $T2,$Ii,$Z1
 369         mov             %r12,0x78+8(%rsp)
 370         lea             0x60($out),$out
 371           vmovdqu       0x00-0x80($key),$rndkey
 372           vaesenclast   $Z2,$inout3,$inout3
 373          vpaddb         $T2,$Z1,$Z2
 374           vaesenclast   $Z3, $inout4,$inout4
 375          vpaddb         $T2,$Z2,$Z3
 376           vaesenclast   $Hkey,$inout5,$inout5
 377          vpaddb         $T2,$Z3,$Hkey
 378
 379         add             \$0x60,$ret
 380         sub             \$0x6,$len
 381         jc              .L6x_done
 382
 383           vmovups       $inout0,-0x60($out)     # save output
 384          vpxor          $rndkey,$T1,$inout0
 385           vmovups       $inout1,-0x50($out)
 386          vmovdqa        $Ii,$inout1             # 0 latency
 387           vmovups       $inout2,-0x40($out)
 388          vmovdqa        $Z1,$inout2             # 0 latency
 389           vmovups       $inout3,-0x30($out)
 390          vmovdqa        $Z2,$inout3             # 0 latency
 391           vmovups       $inout4,-0x20($out)
 392          vmovdqa        $Z3,$inout4             # 0 latency
 393           vmovups       $inout5,-0x10($out)
 394          vmovdqa        $Hkey,$inout5           # 0 latency
 395         vmovdqu         0x20+8(%rsp),$Z3        # I[5]
 396         jmp             .Loop6x
 397
 398 .L6x_done:
 399         vpxor           16+8(%rsp),$Xi,$Xi      # modulo-scheduled
 400         vpxor           $Z0,$Xi,$Xi             # modulo-scheduled
 401
 402         ret
 403 .cfi_endproc
 404 .size   _aesni_ctr32_ghash_6x,.-_aesni_ctr32_ghash_6x
 405 ___
 406 ######################################################################
 407 #
 408 # size_t aesni_gcm_[en|de]crypt(const void *inp, void *out, size_t len,
 409 #               const AES_KEY *key, unsigned char iv[16],
 410 #               struct { u128 Xi,H,Htbl[9]; } *Xip);
 411 $code.=<<___;
 412 .globl  aesni_gcm_decrypt
 413 .type   aesni_gcm_decrypt,\@function,6
 414 .align  32
 415 aesni_gcm_decrypt:
 416 .cfi_startproc
 417         xor     $ret,$ret
 418         cmp     \$0x60,$len                     # minimal accepted length
 419         jb      .Lgcm_dec_abort
 420
 421         lea     (%rsp),%rax                     # save stack pointer
 422 .cfi_def_cfa_register   %rax
 423         push    %rbx
 424 .cfi_push       %rbx
 425         push    %rbp
 426 .cfi_push       %rbp
 427         push    %r12
 428 .cfi_push       %r12
 429         push    %r13
 430 .cfi_push       %r13
 431         push    %r14
 432 .cfi_push       %r14
 433         push    %r15
 434 .cfi_push       %r15
 435 ___
 436 $code.=<<___ if ($win64);
 437         lea     -0xa8(%rsp),%rsp
 438         movaps  %xmm6,-0xd8(%rax)
 439         movaps  %xmm7,-0xc8(%rax)
 440         movaps  %xmm8,-0xb8(%rax)
 441         movaps  %xmm9,-0xa8(%rax)
 442         movaps  %xmm10,-0x98(%rax)
 443         movaps  %xmm11,-0x88(%rax)
 444         movaps  %xmm12,-0x78(%rax)
 445         movaps  %xmm13,-0x68(%rax)
 446         movaps  %xmm14,-0x58(%rax)
 447         movaps  %xmm15,-0x48(%rax)
 448 .Lgcm_dec_body:
 449 ___
 450 $code.=<<___;
 451         vzeroupper
 452
 453         vmovdqu         ($ivp),$T1              # input counter value
 454         add             \$-128,%rsp
 455         mov             12($ivp),$counter
 456         lea             .Lbswap_mask(%rip),$const
 457         lea             -0x80($key),$in0        # borrow $in0
 458         mov             \$0xf80,$end0           # borrow $end0
 459         vmovdqu         ($Xip),$Xi              # load Xi
 460         and             \$-128,%rsp             # ensure stack alignment
 461         vmovdqu         ($const),$Ii            # borrow $Ii for .Lbswap_mask
 462         lea             0x80($key),$key         # size optimization
 463         lea             0x20+0x20($Xip),$Xip    # size optimization
 464         mov             0xf0-0x80($key),$rounds
 465         vpshufb         $Ii,$Xi,$Xi
 466
 467         and             $end0,$in0
 468         and             %rsp,$end0
 469         sub             $in0,$end0
 470         jc              .Ldec_no_key_aliasing
 471         cmp             \$768,$end0
 472         jnc             .Ldec_no_key_aliasing
 473         sub             $end0,%rsp              # avoid aliasing with key
 474 .Ldec_no_key_aliasing:
 475
 476         vmovdqu         0x50($inp),$Z3          # I[5]
 477         lea             ($inp),$in0
 478         vmovdqu         0x40($inp),$Z0
 479         lea             -0xc0($inp,$len),$end0
 480         vmovdqu         0x30($inp),$Z1
 481         shr             \$4,$len
 482         xor             $ret,$ret
 483         vmovdqu         0x20($inp),$Z2
 484          vpshufb        $Ii,$Z3,$Z3             # passed to _aesni_ctr32_ghash_6x
 485         vmovdqu         0x10($inp),$T2
 486          vpshufb        $Ii,$Z0,$Z0
 487         vmovdqu         ($inp),$Hkey
 488          vpshufb        $Ii,$Z1,$Z1
 489         vmovdqu         $Z0,0x30(%rsp)
 490          vpshufb        $Ii,$Z2,$Z2
 491         vmovdqu         $Z1,0x40(%rsp)
 492          vpshufb        $Ii,$T2,$T2
 493         vmovdqu         $Z2,0x50(%rsp)
 494          vpshufb        $Ii,$Hkey,$Hkey
 495         vmovdqu         $T2,0x60(%rsp)
 496         vmovdqu         $Hkey,0x70(%rsp)
 497
 498         call            _aesni_ctr32_ghash_6x
 499
 500         vmovups         $inout0,-0x60($out)     # save output
 501         vmovups         $inout1,-0x50($out)
 502         vmovups         $inout2,-0x40($out)
 503         vmovups         $inout3,-0x30($out)
 504         vmovups         $inout4,-0x20($out)
 505         vmovups         $inout5,-0x10($out)
 506
 507         vpshufb         ($const),$Xi,$Xi        # .Lbswap_mask
 508         vmovdqu         $Xi,-0x40($Xip)         # output Xi
 509
 510         vzeroupper
 511 ___
 512 $code.=<<___ if ($win64);
 513         movaps  -0xd8(%rax),%xmm6
 514         movaps  -0xc8(%rax),%xmm7
 515         movaps  -0xb8(%rax),%xmm8
 516         movaps  -0xa8(%rax),%xmm9
 517         movaps  -0x98(%rax),%xmm10
 518         movaps  -0x88(%rax),%xmm11
 519         movaps  -0x78(%rax),%xmm12
 520         movaps  -0x68(%rax),%xmm13
 521         movaps  -0x58(%rax),%xmm14
 522         movaps  -0x48(%rax),%xmm15
 523 ___
 524 $code.=<<___;
 525         mov     -48(%rax),%r15
 526 .cfi_restore    %r15
 527         mov     -40(%rax),%r14
 528 .cfi_restore    %r14
 529         mov     -32(%rax),%r13
 530 .cfi_restore    %r13
 531         mov     -24(%rax),%r12
 532 .cfi_restore    %r12
 533         mov     -16(%rax),%rbp
 534 .cfi_restore    %rbp
 535         mov     -8(%rax),%rbx
 536 .cfi_restore    %rbx
 537         lea     (%rax),%rsp             # restore %rsp
 538 .cfi_def_cfa_register   %rsp
 539 .Lgcm_dec_abort:
 540         mov     $ret,%rax               # return value
 541         ret
 542 .cfi_endproc
 543 .size   aesni_gcm_decrypt,.-aesni_gcm_decrypt
 544 ___
 545
 546 $code.=<<___;
 547 .type   _aesni_ctr32_6x,\@abi-omnipotent
 548 .align  32
 549 _aesni_ctr32_6x:
 550 .cfi_startproc
 551         vmovdqu         0x00-0x80($key),$Z0     # borrow $Z0 for $rndkey
 552         vmovdqu         0x20($const),$T2        # borrow $T2, .Lone_msb
 553         lea             -1($rounds),%r13
 554         vmovups         0x10-0x80($key),$rndkey
 555         lea             0x20-0x80($key),%r12
 556         vpxor           $Z0,$T1,$inout0
 557         add             \$`6<<24`,$counter
 558         jc              .Lhandle_ctr32_2
 559         vpaddb          $T2,$T1,$inout1
 560         vpaddb          $T2,$inout1,$inout2
 561         vpxor           $Z0,$inout1,$inout1
 562         vpaddb          $T2,$inout2,$inout3
 563         vpxor           $Z0,$inout2,$inout2
 564         vpaddb          $T2,$inout3,$inout4
 565         vpxor           $Z0,$inout3,$inout3
 566         vpaddb          $T2,$inout4,$inout5
 567         vpxor           $Z0,$inout4,$inout4
 568         vpaddb          $T2,$inout5,$T1
 569         vpxor           $Z0,$inout5,$inout5
 570         jmp             .Loop_ctr32
 571
 572 .align  16
 573 .Loop_ctr32:
 574         vaesenc         $rndkey,$inout0,$inout0
 575         vaesenc         $rndkey,$inout1,$inout1
 576         vaesenc         $rndkey,$inout2,$inout2
 577         vaesenc         $rndkey,$inout3,$inout3
 578         vaesenc         $rndkey,$inout4,$inout4
 579         vaesenc         $rndkey,$inout5,$inout5
 580         vmovups         (%r12),$rndkey
 581         lea             0x10(%r12),%r12
 582         dec             %r13d
 583         jnz             .Loop_ctr32
 584
 585         vmovdqu         (%r12),$Hkey            # last round key
 586         vaesenc         $rndkey,$inout0,$inout0
 587         vpxor           0x00($inp),$Hkey,$Z0
 588         vaesenc         $rndkey,$inout1,$inout1
 589         vpxor           0x10($inp),$Hkey,$Z1
 590         vaesenc         $rndkey,$inout2,$inout2
 591         vpxor           0x20($inp),$Hkey,$Z2
 592         vaesenc         $rndkey,$inout3,$inout3
 593         vpxor           0x30($inp),$Hkey,$Xi
 594         vaesenc         $rndkey,$inout4,$inout4
 595         vpxor           0x40($inp),$Hkey,$T2
 596         vaesenc         $rndkey,$inout5,$inout5
 597         vpxor           0x50($inp),$Hkey,$Hkey
 598         lea             0x60($inp),$inp
 599
 600         vaesenclast     $Z0,$inout0,$inout0
 601         vaesenclast     $Z1,$inout1,$inout1
 602         vaesenclast     $Z2,$inout2,$inout2
 603         vaesenclast     $Xi,$inout3,$inout3
 604         vaesenclast     $T2,$inout4,$inout4
 605         vaesenclast     $Hkey,$inout5,$inout5
 606         vmovups         $inout0,0x00($out)
 607         vmovups         $inout1,0x10($out)
 608         vmovups         $inout2,0x20($out)
 609         vmovups         $inout3,0x30($out)
 610         vmovups         $inout4,0x40($out)
 611         vmovups         $inout5,0x50($out)
 612         lea             0x60($out),$out
 613
 614         ret
 615 .align  32
 616 .Lhandle_ctr32_2:
 617         vpshufb         $Ii,$T1,$Z2             # byte-swap counter
 618         vmovdqu         0x30($const),$Z1        # borrow $Z1, .Ltwo_lsb
 619         vpaddd          0x40($const),$Z2,$inout1        # .Lone_lsb
 620         vpaddd          $Z1,$Z2,$inout2
 621         vpaddd          $Z1,$inout1,$inout3
 622         vpshufb         $Ii,$inout1,$inout1
 623         vpaddd          $Z1,$inout2,$inout4
 624         vpshufb         $Ii,$inout2,$inout2
 625         vpxor           $Z0,$inout1,$inout1
 626         vpaddd          $Z1,$inout3,$inout5
 627         vpshufb         $Ii,$inout3,$inout3
 628         vpxor           $Z0,$inout2,$inout2
 629         vpaddd          $Z1,$inout4,$T1         # byte-swapped next counter value
 630         vpshufb         $Ii,$inout4,$inout4
 631         vpxor           $Z0,$inout3,$inout3
 632         vpshufb         $Ii,$inout5,$inout5
 633         vpxor           $Z0,$inout4,$inout4
 634         vpshufb         $Ii,$T1,$T1             # next counter value
 635         vpxor           $Z0,$inout5,$inout5
 636         jmp     .Loop_ctr32
 637 .cfi_endproc
 638 .size   _aesni_ctr32_6x,.-_aesni_ctr32_6x
 639
 640 .globl  aesni_gcm_encrypt
 641 .type   aesni_gcm_encrypt,\@function,6
 642 .align  32
 643 aesni_gcm_encrypt:
 644 .cfi_startproc
 645         xor     $ret,$ret
 646         cmp     \$0x60*3,$len                   # minimal accepted length
 647         jb      .Lgcm_enc_abort
 648
 649         lea     (%rsp),%rax                     # save stack pointer
 650 .cfi_def_cfa_register   %rax
 651         push    %rbx
 652 .cfi_push       %rbx
 653         push    %rbp
 654 .cfi_push       %rbp
 655         push    %r12
 656 .cfi_push       %r12
 657         push    %r13
 658 .cfi_push       %r13
 659         push    %r14
 660 .cfi_push       %r14
 661         push    %r15
 662 .cfi_push       %r15
 663 ___
 664 $code.=<<___ if ($win64);
 665         lea     -0xa8(%rsp),%rsp
 666         movaps  %xmm6,-0xd8(%rax)
 667         movaps  %xmm7,-0xc8(%rax)
 668         movaps  %xmm8,-0xb8(%rax)
 669         movaps  %xmm9,-0xa8(%rax)
 670         movaps  %xmm10,-0x98(%rax)
 671         movaps  %xmm11,-0x88(%rax)
 672         movaps  %xmm12,-0x78(%rax)
 673         movaps  %xmm13,-0x68(%rax)
 674         movaps  %xmm14,-0x58(%rax)
 675         movaps  %xmm15,-0x48(%rax)
 676 .Lgcm_enc_body:
 677 ___
 678 $code.=<<___;
 679         vzeroupper
 680
 681         vmovdqu         ($ivp),$T1              # input counter value
 682         add             \$-128,%rsp
 683         mov             12($ivp),$counter
 684         lea             .Lbswap_mask(%rip),$const
 685         lea             -0x80($key),$in0        # borrow $in0
 686         mov             \$0xf80,$end0           # borrow $end0
 687         lea             0x80($key),$key         # size optimization
 688         vmovdqu         ($const),$Ii            # borrow $Ii for .Lbswap_mask
 689         and             \$-128,%rsp             # ensure stack alignment
 690         mov             0xf0-0x80($key),$rounds
 691
 692         and             $end0,$in0
 693         and             %rsp,$end0
 694         sub             $in0,$end0
 695         jc              .Lenc_no_key_aliasing
 696         cmp             \$768,$end0
 697         jnc             .Lenc_no_key_aliasing
 698         sub             $end0,%rsp              # avoid aliasing with key
 699 .Lenc_no_key_aliasing:
 700
 701         lea             ($out),$in0
 702         lea             -0xc0($out,$len),$end0
 703         shr             \$4,$len
 704
 705         call            _aesni_ctr32_6x
 706         vpshufb         $Ii,$inout0,$Xi         # save bswapped output on stack
 707         vpshufb         $Ii,$inout1,$T2
 708         vmovdqu         $Xi,0x70(%rsp)
 709         vpshufb         $Ii,$inout2,$Z0
 710         vmovdqu         $T2,0x60(%rsp)
 711         vpshufb         $Ii,$inout3,$Z1
 712         vmovdqu         $Z0,0x50(%rsp)
 713         vpshufb         $Ii,$inout4,$Z2
 714         vmovdqu         $Z1,0x40(%rsp)
 715         vpshufb         $Ii,$inout5,$Z3         # passed to _aesni_ctr32_ghash_6x
 716         vmovdqu         $Z2,0x30(%rsp)
 717
 718         call            _aesni_ctr32_6x
 719
 720         vmovdqu         ($Xip),$Xi              # load Xi
 721         lea             0x20+0x20($Xip),$Xip    # size optimization
 722         sub             \$12,$len
 723         mov             \$0x60*2,$ret
 724         vpshufb         $Ii,$Xi,$Xi
 725
 726         call            _aesni_ctr32_ghash_6x
 727         vmovdqu         0x20(%rsp),$Z3          # I[5]
 728          vmovdqu        ($const),$Ii            # borrow $Ii for .Lbswap_mask
 729         vmovdqu         0x00-0x20($Xip),$Hkey   # $Hkey^1
 730         vpunpckhqdq     $Z3,$Z3,$T1
 731         vmovdqu         0x20-0x20($Xip),$rndkey # borrow $rndkey for $HK
 732          vmovups        $inout0,-0x60($out)     # save output
 733          vpshufb        $Ii,$inout0,$inout0     # but keep bswapped copy
 734         vpxor           $Z3,$T1,$T1
 735          vmovups        $inout1,-0x50($out)
 736          vpshufb        $Ii,$inout1,$inout1
 737          vmovups        $inout2,-0x40($out)
 738          vpshufb        $Ii,$inout2,$inout2
 739          vmovups        $inout3,-0x30($out)
 740          vpshufb        $Ii,$inout3,$inout3
 741          vmovups        $inout4,-0x20($out)
 742          vpshufb        $Ii,$inout4,$inout4
 743          vmovups        $inout5,-0x10($out)
 744          vpshufb        $Ii,$inout5,$inout5
 745          vmovdqu        $inout0,0x10(%rsp)      # free $inout0
 746 ___
 747 { my ($HK,$T3)=($rndkey,$inout0);
 748
 749 $code.=<<___;
 750          vmovdqu        0x30(%rsp),$Z2          # I[4]
 751          vmovdqu        0x10-0x20($Xip),$Ii     # borrow $Ii for $Hkey^2
 752          vpunpckhqdq    $Z2,$Z2,$T2
 753         vpclmulqdq      \$0x00,$Hkey,$Z3,$Z1
 754          vpxor          $Z2,$T2,$T2
 755         vpclmulqdq      \$0x11,$Hkey,$Z3,$Z3
 756         vpclmulqdq      \$0x00,$HK,$T1,$T1
 757
 758          vmovdqu        0x40(%rsp),$T3          # I[3]
 759         vpclmulqdq      \$0x00,$Ii,$Z2,$Z0
 760          vmovdqu        0x30-0x20($Xip),$Hkey   # $Hkey^3
 761         vpxor           $Z1,$Z0,$Z0
 762          vpunpckhqdq    $T3,$T3,$Z1
 763         vpclmulqdq      \$0x11,$Ii,$Z2,$Z2
 764          vpxor          $T3,$Z1,$Z1
 765         vpxor           $Z3,$Z2,$Z2
 766         vpclmulqdq      \$0x10,$HK,$T2,$T2
 767          vmovdqu        0x50-0x20($Xip),$HK
 768         vpxor           $T1,$T2,$T2
 769
 770          vmovdqu        0x50(%rsp),$T1          # I[2]
 771         vpclmulqdq      \$0x00,$Hkey,$T3,$Z3
 772          vmovdqu        0x40-0x20($Xip),$Ii     # borrow $Ii for $Hkey^4
 773         vpxor           $Z0,$Z3,$Z3
 774          vpunpckhqdq    $T1,$T1,$Z0
 775         vpclmulqdq      \$0x11,$Hkey,$T3,$T3
 776          vpxor          $T1,$Z0,$Z0
 777         vpxor           $Z2,$T3,$T3
 778         vpclmulqdq      \$0x00,$HK,$Z1,$Z1
 779         vpxor           $T2,$Z1,$Z1
 780
 781          vmovdqu        0x60(%rsp),$T2          # I[1]
 782         vpclmulqdq      \$0x00,$Ii,$T1,$Z2
 783          vmovdqu        0x60-0x20($Xip),$Hkey   # $Hkey^5
 784         vpxor           $Z3,$Z2,$Z2
 785          vpunpckhqdq    $T2,$T2,$Z3
 786         vpclmulqdq      \$0x11,$Ii,$T1,$T1
 787          vpxor          $T2,$Z3,$Z3
 788         vpxor           $T3,$T1,$T1
 789         vpclmulqdq      \$0x10,$HK,$Z0,$Z0
 790          vmovdqu        0x80-0x20($Xip),$HK
 791         vpxor           $Z1,$Z0,$Z0
 792
 793          vpxor          0x70(%rsp),$Xi,$Xi      # accumulate I[0]
 794         vpclmulqdq      \$0x00,$Hkey,$T2,$Z1
 795          vmovdqu        0x70-0x20($Xip),$Ii     # borrow $Ii for $Hkey^6
 796          vpunpckhqdq    $Xi,$Xi,$T3
 797         vpxor           $Z2,$Z1,$Z1
 798         vpclmulqdq      \$0x11,$Hkey,$T2,$T2
 799          vpxor          $Xi,$T3,$T3
 800         vpxor           $T1,$T2,$T2
 801         vpclmulqdq      \$0x00,$HK,$Z3,$Z3
 802         vpxor           $Z0,$Z3,$Z0
 803
 804         vpclmulqdq      \$0x00,$Ii,$Xi,$Z2
 805          vmovdqu        0x00-0x20($Xip),$Hkey   # $Hkey^1
 806          vpunpckhqdq    $inout5,$inout5,$T1
 807         vpclmulqdq      \$0x11,$Ii,$Xi,$Xi
 808          vpxor          $inout5,$T1,$T1
 809         vpxor           $Z1,$Z2,$Z1
 810         vpclmulqdq      \$0x10,$HK,$T3,$T3
 811          vmovdqu        0x20-0x20($Xip),$HK
 812         vpxor           $T2,$Xi,$Z3
 813         vpxor           $Z0,$T3,$Z2
 814
 815          vmovdqu        0x10-0x20($Xip),$Ii     # borrow $Ii for $Hkey^2
 816           vpxor         $Z1,$Z3,$T3             # aggregated Karatsuba post-processing
 817         vpclmulqdq      \$0x00,$Hkey,$inout5,$Z0
 818           vpxor         $T3,$Z2,$Z2
 819          vpunpckhqdq    $inout4,$inout4,$T2
 820         vpclmulqdq      \$0x11,$Hkey,$inout5,$inout5
 821          vpxor          $inout4,$T2,$T2
 822           vpslldq       \$8,$Z2,$T3
 823         vpclmulqdq      \$0x00,$HK,$T1,$T1
 824           vpxor         $T3,$Z1,$Xi
 825           vpsrldq       \$8,$Z2,$Z2
 826           vpxor         $Z2,$Z3,$Z3
 827
 828         vpclmulqdq      \$0x00,$Ii,$inout4,$Z1
 829          vmovdqu        0x30-0x20($Xip),$Hkey   # $Hkey^3
 830         vpxor           $Z0,$Z1,$Z1
 831          vpunpckhqdq    $inout3,$inout3,$T3
 832         vpclmulqdq      \$0x11,$Ii,$inout4,$inout4
 833          vpxor          $inout3,$T3,$T3
 834         vpxor           $inout5,$inout4,$inout4
 835           vpalignr      \$8,$Xi,$Xi,$inout5     # 1st phase
 836         vpclmulqdq      \$0x10,$HK,$T2,$T2
 837          vmovdqu        0x50-0x20($Xip),$HK
 838         vpxor           $T1,$T2,$T2
 839
 840         vpclmulqdq      \$0x00,$Hkey,$inout3,$Z0
 841          vmovdqu        0x40-0x20($Xip),$Ii     # borrow $Ii for $Hkey^4
 842         vpxor           $Z1,$Z0,$Z0
 843          vpunpckhqdq    $inout2,$inout2,$T1
 844         vpclmulqdq      \$0x11,$Hkey,$inout3,$inout3
 845          vpxor          $inout2,$T1,$T1
 846         vpxor           $inout4,$inout3,$inout3
 847           vxorps        0x10(%rsp),$Z3,$Z3      # accumulate $inout0
 848         vpclmulqdq      \$0x00,$HK,$T3,$T3
 849         vpxor           $T2,$T3,$T3
 850
 851           vpclmulqdq    \$0x10,0x10($const),$Xi,$Xi
 852           vxorps        $inout5,$Xi,$Xi
 853
 854         vpclmulqdq      \$0x00,$Ii,$inout2,$Z1
 855          vmovdqu        0x60-0x20($Xip),$Hkey   # $Hkey^5
 856         vpxor           $Z0,$Z1,$Z1
 857          vpunpckhqdq    $inout1,$inout1,$T2
 858         vpclmulqdq      \$0x11,$Ii,$inout2,$inout2
 859          vpxor          $inout1,$T2,$T2
 860           vpalignr      \$8,$Xi,$Xi,$inout5     # 2nd phase
 861         vpxor           $inout3,$inout2,$inout2
 862         vpclmulqdq      \$0x10,$HK,$T1,$T1
 863          vmovdqu        0x80-0x20($Xip),$HK
 864         vpxor           $T3,$T1,$T1
 865
 866           vxorps        $Z3,$inout5,$inout5
 867           vpclmulqdq    \$0x10,0x10($const),$Xi,$Xi
 868           vxorps        $inout5,$Xi,$Xi
 869
 870         vpclmulqdq      \$0x00,$Hkey,$inout1,$Z0
 871          vmovdqu        0x70-0x20($Xip),$Ii     # borrow $Ii for $Hkey^6
 872         vpxor           $Z1,$Z0,$Z0
 873          vpunpckhqdq    $Xi,$Xi,$T3
 874         vpclmulqdq      \$0x11,$Hkey,$inout1,$inout1
 875          vpxor          $Xi,$T3,$T3
 876         vpxor           $inout2,$inout1,$inout1
 877         vpclmulqdq      \$0x00,$HK,$T2,$T2
 878         vpxor           $T1,$T2,$T2
 879
 880         vpclmulqdq      \$0x00,$Ii,$Xi,$Z1
 881         vpclmulqdq      \$0x11,$Ii,$Xi,$Z3
 882         vpxor           $Z0,$Z1,$Z1
 883         vpclmulqdq      \$0x10,$HK,$T3,$Z2
 884         vpxor           $inout1,$Z3,$Z3
 885         vpxor           $T2,$Z2,$Z2
 886
 887         vpxor           $Z1,$Z3,$Z0             # aggregated Karatsuba post-processing
 888         vpxor           $Z0,$Z2,$Z2
 889         vpslldq         \$8,$Z2,$T1
 890         vmovdqu         0x10($const),$Hkey      # .Lpoly
 891         vpsrldq         \$8,$Z2,$Z2
 892         vpxor           $T1,$Z1,$Xi
 893         vpxor           $Z2,$Z3,$Z3
 894
 895         vpalignr        \$8,$Xi,$Xi,$T2         # 1st phase
 896         vpclmulqdq      \$0x10,$Hkey,$Xi,$Xi
 897         vpxor           $T2,$Xi,$Xi
 898
 899         vpalignr        \$8,$Xi,$Xi,$T2         # 2nd phase
 900         vpclmulqdq      \$0x10,$Hkey,$Xi,$Xi
 901         vpxor           $Z3,$T2,$T2
 902         vpxor           $T2,$Xi,$Xi
 903 ___
 904 }
 905 $code.=<<___;
 906         vpshufb         ($const),$Xi,$Xi        # .Lbswap_mask
 907         vmovdqu         $Xi,-0x40($Xip)         # output Xi
 908
 909         vzeroupper
 910 ___
 911 $code.=<<___ if ($win64);
 912         movaps  -0xd8(%rax),%xmm6
 913         movaps  -0xc8(%rax),%xmm7
 914         movaps  -0xb8(%rax),%xmm8
 915         movaps  -0xa8(%rax),%xmm9
 916         movaps  -0x98(%rax),%xmm10
 917         movaps  -0x88(%rax),%xmm11
 918         movaps  -0x78(%rax),%xmm12
 919         movaps  -0x68(%rax),%xmm13
 920         movaps  -0x58(%rax),%xmm14
 921         movaps  -0x48(%rax),%xmm15
 922 ___
 923 $code.=<<___;
 924         mov     -48(%rax),%r15
 925 .cfi_restore    %r15
 926         mov     -40(%rax),%r14
 927 .cfi_restore    %r14
 928         mov     -32(%rax),%r13
 929 .cfi_restore    %r13
 930         mov     -24(%rax),%r12
 931 .cfi_restore    %r12
 932         mov     -16(%rax),%rbp
 933 .cfi_restore    %rbp
 934         mov     -8(%rax),%rbx
 935 .cfi_restore    %rbx
 936         lea     (%rax),%rsp             # restore %rsp
 937 .cfi_def_cfa_register   %rsp
 938 .Lgcm_enc_abort:
 939         mov     $ret,%rax               # return value
 940         ret
 941 .cfi_endproc
 942 .size   aesni_gcm_encrypt,.-aesni_gcm_encrypt
 943 ___
 944
 945 $code.=<<___;
 946 .align  64
 947 .Lbswap_mask:
 948         .byte   15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
 949 .Lpoly:
 950         .byte   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2
 951 .Lone_msb:
 952         .byte   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1
 953 .Ltwo_lsb:
 954         .byte   2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 955 .Lone_lsb:
 956         .byte   1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 957 .asciz  "AES-NI GCM module for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
 958 .align  64
 959 ___
 960 if ($win64) {
 961 $rec="%rcx";
 962 $frame="%rdx";
 963 $context="%r8";
 964 $disp="%r9";
 965
 966 $code.=<<___
 967 .extern __imp_RtlVirtualUnwind
 968 .type   gcm_se_handler,\@abi-omnipotent
 969 .align  16
 970 gcm_se_handler:
 971         push    %rsi
 972         push    %rdi
 973         push    %rbx
 974         push    %rbp
 975         push    %r12
 976         push    %r13
 977         push    %r14
 978         push    %r15
 979         pushfq
 980         sub     \$64,%rsp
 981
 982         mov     120($context),%rax      # pull context->Rax
 983         mov     248($context),%rbx      # pull context->Rip
 984
 985         mov     8($disp),%rsi           # disp->ImageBase
 986         mov     56($disp),%r11          # disp->HandlerData
 987
 988         mov     0(%r11),%r10d           # HandlerData[0]
 989         lea     (%rsi,%r10),%r10        # prologue label
 990         cmp     %r10,%rbx               # context->Rip<prologue label
 991         jb      .Lcommon_seh_tail
 992
 993         mov     152($context),%rax      # pull context->Rsp
 994
 995         mov     4(%r11),%r10d           # HandlerData[1]
 996         lea     (%rsi,%r10),%r10        # epilogue label
 997         cmp     %r10,%rbx               # context->Rip>=epilogue label
 998         jae     .Lcommon_seh_tail
 999
1000         mov     120($context),%rax      # pull context->Rax
1001
1002         mov     -48(%rax),%r15
1003         mov     -40(%rax),%r14
1004         mov     -32(%rax),%r13
1005         mov     -24(%rax),%r12
1006         mov     -16(%rax),%rbp
1007         mov     -8(%rax),%rbx
1008         mov     %r15,240($context)
1009         mov     %r14,232($context)
1010         mov     %r13,224($context)
1011         mov     %r12,216($context)
1012         mov     %rbp,160($context)
1013         mov     %rbx,144($context)
1014
1015         lea     -0xd8(%rax),%rsi        # %xmm save area
1016         lea     512($context),%rdi      # & context.Xmm6
1017         mov     \$20,%ecx               # 10*sizeof(%xmm0)/sizeof(%rax)
1018         .long   0xa548f3fc              # cld; rep movsq
1019
1020 .Lcommon_seh_tail:
1021         mov     8(%rax),%rdi
1022         mov     16(%rax),%rsi
1023         mov     %rax,152($context)      # restore context->Rsp
1024         mov     %rsi,168($context)      # restore context->Rsi
1025         mov     %rdi,176($context)      # restore context->Rdi
1026
1027         mov     40($disp),%rdi          # disp->ContextRecord
1028         mov     $context,%rsi           # context
1029         mov     \$154,%ecx              # sizeof(CONTEXT)
1030         .long   0xa548f3fc              # cld; rep movsq
1031
1032         mov     $disp,%rsi
1033         xor     %rcx,%rcx               # arg1, UNW_FLAG_NHANDLER
1034         mov     8(%rsi),%rdx            # arg2, disp->ImageBase
1035         mov     0(%rsi),%r8             # arg3, disp->ControlPc
1036         mov     16(%rsi),%r9            # arg4, disp->FunctionEntry
1037         mov     40(%rsi),%r10           # disp->ContextRecord
1038         lea     56(%rsi),%r11           # &disp->HandlerData
1039         lea     24(%rsi),%r12           # &disp->EstablisherFrame
1040         mov     %r10,32(%rsp)           # arg5
1041         mov     %r11,40(%rsp)           # arg6
1042         mov     %r12,48(%rsp)           # arg7
1043         mov     %rcx,56(%rsp)           # arg8, (NULL)
1044         call    *__imp_RtlVirtualUnwind(%rip)
1045
1046         mov     \$1,%eax                # ExceptionContinueSearch
1047         add     \$64,%rsp
1048         popfq
1049         pop     %r15
1050         pop     %r14
1051         pop     %r13
1052         pop     %r12
1053         pop     %rbp
1054         pop     %rbx
1055         pop     %rdi
1056         pop     %rsi
1057         ret
1058 .size   gcm_se_handler,.-gcm_se_handler
1059
1060 .section        .pdata
1061 .align  4
1062         .rva    .LSEH_begin_aesni_gcm_decrypt
1063         .rva    .LSEH_end_aesni_gcm_decrypt
1064         .rva    .LSEH_gcm_dec_info
1065
1066         .rva    .LSEH_begin_aesni_gcm_encrypt
1067         .rva    .LSEH_end_aesni_gcm_encrypt
1068         .rva    .LSEH_gcm_enc_info
1069 .section        .xdata
1070 .align  8
1071 .LSEH_gcm_dec_info:
1072         .byte   9,0,0,0
1073         .rva    gcm_se_handler
1074         .rva    .Lgcm_dec_body,.Lgcm_dec_abort
1075 .LSEH_gcm_enc_info:
1076         .byte   9,0,0,0
1077         .rva    gcm_se_handler
1078         .rva    .Lgcm_enc_body,.Lgcm_enc_abort
1079 ___
1080 }
1081 }}} else {{{
1082 $code=<<___;    # assembler is too old
1083 .text
1084
1085 .globl  aesni_gcm_encrypt
1086 .type   aesni_gcm_encrypt,\@abi-omnipotent
1087 aesni_gcm_encrypt:
1088 .cfi_startproc
1089         xor     %eax,%eax
1090         ret
1091 .cfi_endproc
1092 .size   aesni_gcm_encrypt,.-aesni_gcm_encrypt
1093
1094 .globl  aesni_gcm_decrypt
1095 .type   aesni_gcm_decrypt,\@abi-omnipotent
1096 aesni_gcm_decrypt:
1097 .cfi_startproc
1098         xor     %eax,%eax
1099         ret
1100 .cfi_endproc
1101 .size   aesni_gcm_decrypt,.-aesni_gcm_decrypt
1102 ___
1103 }}}
1104
1105 $code =~ s/\`([^\`]*)\`/eval($1)/gem;
1106
1107 print $code;
1108
1109 close STDOUT or die "error closing STDOUT: $!";