- #!/usr/bin/env perl
- #
- # ====================================================================
- # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
- # project. The module is, however, dual licensed under OpenSSL and
- # CRYPTOGAMS licenses depending on where you obtain it. For further
- # details see http://www.openssl.org/~appro/cryptogams/.
- # ====================================================================
- #
- # This module implements support for Intel AES-NI extension. In
- # OpenSSL context it's used with Intel engine, but can also be used as
- # drop-in replacement for crypto/aes/asm/aes-x86_64.pl [see below for
- # details].
- #
- # Performance.
- #
- # Given aes(enc|dec) instructions' latency asymptotic performance for
- # non-parallelizable modes such as CBC encrypt is 3.75 cycles per byte
- # processed with 128-bit key. And given their throughput asymptotic
- # performance for parallelizable modes is 1.25 cycles per byte. Being
- # asymptotic limit it's not something you commonly achieve in reality,
- # but how close does one get? Below are results collected for
- # different modes and block sized. Pairs of numbers are for en-/
- # decryption.
- #
- # 16-byte 64-byte 256-byte 1-KB 8-KB
- # ECB 4.25/4.25 1.38/1.38 1.28/1.28 1.26/1.26 1.26/1.26
- # CTR 5.42/5.42 1.92/1.92 1.44/1.44 1.28/1.28 1.26/1.26
- # CBC 4.38/4.43 4.15/1.43 4.07/1.32 4.07/1.29 4.06/1.28
- # CCM 5.66/9.42 4.42/5.41 4.16/4.40 4.09/4.15 4.06/4.07
- # OFB 5.42/5.42 4.64/4.64 4.44/4.44 4.39/4.39 4.38/4.38
- # CFB 5.73/5.85 5.56/5.62 5.48/5.56 5.47/5.55 5.47/5.55
- #
- # ECB, CTR, CBC and CCM results are free from EVP overhead. This means
- # that otherwise used 'openssl speed -evp aes-128-??? -engine aesni
- # [-decrypt]' will exhibit 10-15% worse results for smaller blocks.
- # The results were collected with specially crafted speed.c benchmark
- # in order to compare them with results reported in "Intel Advanced
- # Encryption Standard (AES) New Instruction Set" White Paper Revision
- # 3.0 dated May 2010. All above results are consistently better. This
- # module also provides better performance for block sizes smaller than
- # 128 bytes in points *not* represented in the above table.
- #
- # Looking at the results for 8-KB buffer.
- #
- # CFB and OFB results are far from the limit, because implementation
- # uses "generic" CRYPTO_[c|o]fb128_encrypt interfaces relying on
- # single-block aesni_encrypt, which is not the most optimal way to go.
- # CBC encrypt result is unexpectedly high and there is no documented
- # explanation for it. Seemingly there is a small penalty for feeding
- # the result back to AES unit the way it's done in CBC mode. There is
- # nothing one can do and the result appears optimal. CCM result is
- # identical to CBC, because CBC-MAC is essentially CBC encrypt without
- # saving output. CCM CTR "stays invisible," because it's neatly
- # interleaved wih CBC-MAC. This provides ~30% improvement over
- # "straghtforward" CCM implementation with CTR and CBC-MAC performed
- # disjointly. Parallelizable modes practically achieve the theoretical
- # limit.
- #
- # Looking at how results vary with buffer size.
- #
- # Curves are practically saturated at 1-KB buffer size. In most cases
- # "256-byte" performance is >95%, and "64-byte" is ~90% of "8-KB" one.
- # CTR curve doesn't follow this pattern and is "slowest" changing one
- # with "256-byte" result being 87% of "8-KB." This is because overhead
- # in CTR mode is most computationally intensive. Small-block CCM
- # decrypt is slower than encrypt, because first CTR and last CBC-MAC
- # iterations can't be interleaved.
- #
- # Results for 192- and 256-bit keys.
- #
- # EVP-free results were observed to scale perfectly with number of
- # rounds for larger block sizes, i.e. 192-bit result being 10/12 times
- # lower and 256-bit one - 10/14. Well, in CBC encrypt case differences
- # are a tad smaller, because the above mentioned penalty biases all
- # results by same constant value. In similar way function call
- # overhead affects small-block performance, as well as OFB and CFB
- # results. Differences are not large, most common coefficients are
- # 10/11.7 and 10/13.4 (as opposite to 10/12.0 and 10/14.0), but one
- # observe even 10/11.2 and 10/12.4 (CTR, OFB, CFB)...
-
- # January 2011
- #
- # While Westmere processor features 6 cycles latency for aes[enc|dec]
- # instructions, which can be scheduled every second cycle, Sandy
- # Bridge spends 8 cycles per instruction, but it can schedule them
- # every cycle. This means that code targeting Westmere would perform
- # suboptimally on Sandy Bridge. Therefore this update.
- #
- # In addition, non-parallelizable CBC encrypt (as well as CCM) is
- # optimized. Relative improvement might appear modest, 8% on Westmere,
- # but in absolute terms it's 3.77 cycles per byte encrypted with
- # 128-bit key on Westmere, and 5.07 - on Sandy Bridge. These numbers
- # should be compared to asymptotic limits of 3.75 for Westmere and
- # 5.00 for Sandy Bridge. Actually, the fact that they get this close
- # to asymptotic limits is quite amazing. Indeed, the limit is
- # calculated as latency times number of rounds, 10 for 128-bit key,
- # and divided by 16, the number of bytes in block, or in other words
- # it accounts *solely* for aesenc instructions. But there are extra
- # instructions, and numbers so close to the asymptotic limits mean
- # that it's as if it takes as little as *one* additional cycle to
- # execute all of them. How is it possible? It is possible thanks to
- # out-of-order execution logic, which manages to overlap post-
- # processing of previous block, things like saving the output, with
- # actual encryption of current block, as well as pre-processing of
- # current block, things like fetching input and xor-ing it with
- # 0-round element of the key schedule, with actual encryption of
- # previous block. Keep this in mind...
- #
- # For parallelizable modes, such as ECB, CBC decrypt, CTR, higher
- # performance is achieved by interleaving instructions working on
- # independent blocks. In which case asymptotic limit for such modes
- # can be obtained by dividing above mentioned numbers by AES
- # instructions' interleave factor. Westmere can execute at most 3
- # instructions at a time, meaning that optimal interleave factor is 3,
- # and that's where the "magic" number of 1.25 come from. "Optimal
- # interleave factor" means that increase of interleave factor does
- # not improve performance. The formula has proven to reflect reality
- # pretty well on Westmere... Sandy Bridge on the other hand can
- # execute up to 8 AES instructions at a time, so how does varying
- # interleave factor affect the performance? Here is table for ECB
- # (numbers are cycles per byte processed with 128-bit key):
- #
- # instruction interleave factor 3x 6x 8x
- # theoretical asymptotic limit 1.67 0.83 0.625
- # measured performance for 8KB block 1.05 0.86 0.84
- #
- # "as if" interleave factor 4.7x 5.8x 6.0x
- #
- # Further data for other parallelizable modes:
- #
- # CBC decrypt 1.16 0.93 0.74
- # CTR 1.14 0.91 0.74
- #
- # Well, given 3x column it's probably inappropriate to call the limit
- # asymptotic, if it can be surpassed, isn't it? What happens there?
- # Rewind to CBC paragraph for the answer. Yes, out-of-order execution
- # magic is responsible for this. Processor overlaps not only the
- # additional instructions with AES ones, but even AES instuctions
- # processing adjacent triplets of independent blocks. In the 6x case
- # additional instructions still claim disproportionally small amount
- # of additional cycles, but in 8x case number of instructions must be
- # a tad too high for out-of-order logic to cope with, and AES unit
- # remains underutilized... As you can see 8x interleave is hardly
- # justifiable, so there no need to feel bad that 32-bit aesni-x86.pl
- # utilizies 6x interleave because of limited register bank capacity.
- #
- # Higher interleave factors do have negative impact on Westmere
- # performance. While for ECB mode it's negligible ~1.5%, other
- # parallelizables perform ~5% worse, which is outweighed by ~25%
- # improvement on Sandy Bridge. To balance regression on Westmere
- # CTR mode was implemented with 6x aesenc interleave factor.
-
- # April 2011
- #
- # Add aesni_xts_[en|de]crypt. Westmere spends 1.25 cycles processing
- # one byte out of 8KB with 128-bit key, Sandy Bridge - 0.90. Just like
- # in CTR mode AES instruction interleave factor was chosen to be 6x.
-
- ######################################################################
- # Current large-block performance in cycles per byte processed with
- # 128-bit key (less is better).
- #
- # CBC en-/decrypt CTR XTS ECB
- # Westmere 3.77/1.25 1.25 1.25 1.26
- # * Bridge 5.07/0.74 0.75 0.90 0.85
- # Haswell 4.44/0.63 0.63 0.73 0.63
- # Silvermont 5.75/3.54 3.56 4.12 3.87(*)
- # Bulldozer 5.77/0.70 0.72 0.90 0.70
- #
- # (*) Atom Silvermont ECB result is suboptimal because of penalties
- # incurred by operations on %xmm8-15. As ECB is not considered
- # critical, nothing was done to mitigate the problem.
-
- $PREFIX="aesni"; # if $PREFIX is set to "AES", the script
- # generates drop-in replacement for
- # crypto/aes/asm/aes-x86_64.pl:-)
-
- $flavour = shift;
- $output = shift;
- if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
-
- $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
-
- $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
- ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
- ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
- die "can't locate x86_64-xlate.pl";
-
- open OUT,"| \"$^X\" $xlate $flavour $output";
- *STDOUT=*OUT;
-
- $movkey = $PREFIX eq "aesni" ? "movups" : "movups";
- @_4args=$win64? ("%rcx","%rdx","%r8", "%r9") : # Win64 order
- ("%rdi","%rsi","%rdx","%rcx"); # Unix order
-
- $code=".text\n";
- $code.=".extern OPENSSL_ia32cap_P\n";
-
- $rounds="%eax"; # input to and changed by aesni_[en|de]cryptN !!!
- # this is natural Unix argument order for public $PREFIX_[ecb|cbc]_encrypt ...
- $inp="%rdi";
- $out="%rsi";
- $len="%rdx";
- $key="%rcx"; # input to and changed by aesni_[en|de]cryptN !!!
- $ivp="%r8"; # cbc, ctr, ...
-
- $rnds_="%r10d"; # backup copy for $rounds
- $key_="%r11"; # backup copy for $key
-
- # %xmm register layout
- $rndkey0="%xmm0"; $rndkey1="%xmm1";
- $inout0="%xmm2"; $inout1="%xmm3";
- $inout2="%xmm4"; $inout3="%xmm5";
- $inout4="%xmm6"; $inout5="%xmm7";
- $inout6="%xmm8"; $inout7="%xmm9";
-
- $in2="%xmm6"; $in1="%xmm7"; # used in CBC decrypt, CTR, ...
- $in0="%xmm8"; $iv="%xmm9";
-
- # Inline version of internal aesni_[en|de]crypt1.
- #
- # Why folded loop? Because aes[enc|dec] is slow enough to accommodate
- # cycles which take care of loop variables...
- { my $sn;
- sub aesni_generate1 {
- my ($p,$key,$rounds,$inout,$ivec)=@_; $inout=$inout0 if (!defined($inout));
- ++$sn;
- $code.=<<___;
- $movkey ($key),$rndkey0
- $movkey 16($key),$rndkey1
- ___
- $code.=<<___ if (defined($ivec));
- xorps $rndkey0,$ivec
- lea 32($key),$key
- xorps $ivec,$inout
- ___
- $code.=<<___ if (!defined($ivec));
- lea 32($key),$key
- xorps $rndkey0,$inout
- ___
- $code.=<<___;
- .Loop_${p}1_$sn:
- aes${p} $rndkey1,$inout
- dec $rounds
- $movkey ($key),$rndkey1
- lea 16($key),$key
- jnz .Loop_${p}1_$sn # loop body is 16 bytes
- aes${p}last $rndkey1,$inout
- ___
- }}
- # void $PREFIX_[en|de]crypt (const void *inp,void *out,const AES_KEY *key);
- #
- { my ($inp,$out,$key) = @_4args;
-
- $code.=<<___;
- .globl ${PREFIX}_encrypt
- .type ${PREFIX}_encrypt,\@abi-omnipotent
- .align 16
- ${PREFIX}_encrypt:
- movups ($inp),$inout0 # load input
- mov 240($key),$rounds # key->rounds
- ___
- &aesni_generate1("enc",$key,$rounds);
- $code.=<<___;
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- movups $inout0,($out) # output
- pxor $inout0,$inout0
- ret
- .size ${PREFIX}_encrypt,.-${PREFIX}_encrypt
-
- .globl ${PREFIX}_decrypt
- .type ${PREFIX}_decrypt,\@abi-omnipotent
- .align 16
- ${PREFIX}_decrypt:
- movups ($inp),$inout0 # load input
- mov 240($key),$rounds # key->rounds
- ___
- &aesni_generate1("dec",$key,$rounds);
- $code.=<<___;
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- movups $inout0,($out) # output
- pxor $inout0,$inout0
- ret
- .size ${PREFIX}_decrypt, .-${PREFIX}_decrypt
- ___
- }
-
- # _aesni_[en|de]cryptN are private interfaces, N denotes interleave
- # factor. Why 3x subroutine were originally used in loops? Even though
- # aes[enc|dec] latency was originally 6, it could be scheduled only
- # every *2nd* cycle. Thus 3x interleave was the one providing optimal
- # utilization, i.e. when subroutine's throughput is virtually same as
- # of non-interleaved subroutine [for number of input blocks up to 3].
- # This is why it originally made no sense to implement 2x subroutine.
- # But times change and it became appropriate to spend extra 192 bytes
- # on 2x subroutine on Atom Silvermont account. For processors that
- # can schedule aes[enc|dec] every cycle optimal interleave factor
- # equals to corresponding instructions latency. 8x is optimal for
- # * Bridge and "super-optimal" for other Intel CPUs...
-
- sub aesni_generate2 {
- my $dir=shift;
- # As already mentioned it takes in $key and $rounds, which are *not*
- # preserved. $inout[0-1] is cipher/clear text...
- $code.=<<___;
- .type _aesni_${dir}rypt2,\@abi-omnipotent
- .align 16
- _aesni_${dir}rypt2:
- $movkey ($key),$rndkey0
- shl \$4,$rounds
- $movkey 16($key),$rndkey1
- xorps $rndkey0,$inout0
- xorps $rndkey0,$inout1
- $movkey 32($key),$rndkey0
- lea 32($key,$rounds),$key
- neg %rax # $rounds
- add \$16,%rax
-
- .L${dir}_loop2:
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aes${dir} $rndkey0,$inout0
- aes${dir} $rndkey0,$inout1
- $movkey -16($key,%rax),$rndkey0
- jnz .L${dir}_loop2
-
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir}last $rndkey0,$inout0
- aes${dir}last $rndkey0,$inout1
- ret
- .size _aesni_${dir}rypt2,.-_aesni_${dir}rypt2
- ___
- }
- sub aesni_generate3 {
- my $dir=shift;
- # As already mentioned it takes in $key and $rounds, which are *not*
- # preserved. $inout[0-2] is cipher/clear text...
- $code.=<<___;
- .type _aesni_${dir}rypt3,\@abi-omnipotent
- .align 16
- _aesni_${dir}rypt3:
- $movkey ($key),$rndkey0
- shl \$4,$rounds
- $movkey 16($key),$rndkey1
- xorps $rndkey0,$inout0
- xorps $rndkey0,$inout1
- xorps $rndkey0,$inout2
- $movkey 32($key),$rndkey0
- lea 32($key,$rounds),$key
- neg %rax # $rounds
- add \$16,%rax
-
- .L${dir}_loop3:
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aes${dir} $rndkey0,$inout0
- aes${dir} $rndkey0,$inout1
- aes${dir} $rndkey0,$inout2
- $movkey -16($key,%rax),$rndkey0
- jnz .L${dir}_loop3
-
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- aes${dir}last $rndkey0,$inout0
- aes${dir}last $rndkey0,$inout1
- aes${dir}last $rndkey0,$inout2
- ret
- .size _aesni_${dir}rypt3,.-_aesni_${dir}rypt3
- ___
- }
- # 4x interleave is implemented to improve small block performance,
- # most notably [and naturally] 4 block by ~30%. One can argue that one
- # should have implemented 5x as well, but improvement would be <20%,
- # so it's not worth it...
- sub aesni_generate4 {
- my $dir=shift;
- # As already mentioned it takes in $key and $rounds, which are *not*
- # preserved. $inout[0-3] is cipher/clear text...
- $code.=<<___;
- .type _aesni_${dir}rypt4,\@abi-omnipotent
- .align 16
- _aesni_${dir}rypt4:
- $movkey ($key),$rndkey0
- shl \$4,$rounds
- $movkey 16($key),$rndkey1
- xorps $rndkey0,$inout0
- xorps $rndkey0,$inout1
- xorps $rndkey0,$inout2
- xorps $rndkey0,$inout3
- $movkey 32($key),$rndkey0
- lea 32($key,$rounds),$key
- neg %rax # $rounds
- .byte 0x0f,0x1f,0x00
- add \$16,%rax
-
- .L${dir}_loop4:
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- aes${dir} $rndkey1,$inout3
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aes${dir} $rndkey0,$inout0
- aes${dir} $rndkey0,$inout1
- aes${dir} $rndkey0,$inout2
- aes${dir} $rndkey0,$inout3
- $movkey -16($key,%rax),$rndkey0
- jnz .L${dir}_loop4
-
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- aes${dir} $rndkey1,$inout3
- aes${dir}last $rndkey0,$inout0
- aes${dir}last $rndkey0,$inout1
- aes${dir}last $rndkey0,$inout2
- aes${dir}last $rndkey0,$inout3
- ret
- .size _aesni_${dir}rypt4,.-_aesni_${dir}rypt4
- ___
- }
- sub aesni_generate6 {
- my $dir=shift;
- # As already mentioned it takes in $key and $rounds, which are *not*
- # preserved. $inout[0-5] is cipher/clear text...
- $code.=<<___;
- .type _aesni_${dir}rypt6,\@abi-omnipotent
- .align 16
- _aesni_${dir}rypt6:
- $movkey ($key),$rndkey0
- shl \$4,$rounds
- $movkey 16($key),$rndkey1
- xorps $rndkey0,$inout0
- pxor $rndkey0,$inout1
- pxor $rndkey0,$inout2
- aes${dir} $rndkey1,$inout0
- lea 32($key,$rounds),$key
- neg %rax # $rounds
- aes${dir} $rndkey1,$inout1
- pxor $rndkey0,$inout3
- pxor $rndkey0,$inout4
- aes${dir} $rndkey1,$inout2
- pxor $rndkey0,$inout5
- $movkey ($key,%rax),$rndkey0
- add \$16,%rax
- jmp .L${dir}_loop6_enter
- .align 16
- .L${dir}_loop6:
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- .L${dir}_loop6_enter:
- aes${dir} $rndkey1,$inout3
- aes${dir} $rndkey1,$inout4
- aes${dir} $rndkey1,$inout5
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aes${dir} $rndkey0,$inout0
- aes${dir} $rndkey0,$inout1
- aes${dir} $rndkey0,$inout2
- aes${dir} $rndkey0,$inout3
- aes${dir} $rndkey0,$inout4
- aes${dir} $rndkey0,$inout5
- $movkey -16($key,%rax),$rndkey0
- jnz .L${dir}_loop6
-
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- aes${dir} $rndkey1,$inout3
- aes${dir} $rndkey1,$inout4
- aes${dir} $rndkey1,$inout5
- aes${dir}last $rndkey0,$inout0
- aes${dir}last $rndkey0,$inout1
- aes${dir}last $rndkey0,$inout2
- aes${dir}last $rndkey0,$inout3
- aes${dir}last $rndkey0,$inout4
- aes${dir}last $rndkey0,$inout5
- ret
- .size _aesni_${dir}rypt6,.-_aesni_${dir}rypt6
- ___
- }
- sub aesni_generate8 {
- my $dir=shift;
- # As already mentioned it takes in $key and $rounds, which are *not*
- # preserved. $inout[0-7] is cipher/clear text...
- $code.=<<___;
- .type _aesni_${dir}rypt8,\@abi-omnipotent
- .align 16
- _aesni_${dir}rypt8:
- $movkey ($key),$rndkey0
- shl \$4,$rounds
- $movkey 16($key),$rndkey1
- xorps $rndkey0,$inout0
- xorps $rndkey0,$inout1
- pxor $rndkey0,$inout2
- pxor $rndkey0,$inout3
- pxor $rndkey0,$inout4
- lea 32($key,$rounds),$key
- neg %rax # $rounds
- aes${dir} $rndkey1,$inout0
- pxor $rndkey0,$inout5
- pxor $rndkey0,$inout6
- aes${dir} $rndkey1,$inout1
- pxor $rndkey0,$inout7
- $movkey ($key,%rax),$rndkey0
- add \$16,%rax
- jmp .L${dir}_loop8_inner
- .align 16
- .L${dir}_loop8:
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- .L${dir}_loop8_inner:
- aes${dir} $rndkey1,$inout2
- aes${dir} $rndkey1,$inout3
- aes${dir} $rndkey1,$inout4
- aes${dir} $rndkey1,$inout5
- aes${dir} $rndkey1,$inout6
- aes${dir} $rndkey1,$inout7
- .L${dir}_loop8_enter:
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aes${dir} $rndkey0,$inout0
- aes${dir} $rndkey0,$inout1
- aes${dir} $rndkey0,$inout2
- aes${dir} $rndkey0,$inout3
- aes${dir} $rndkey0,$inout4
- aes${dir} $rndkey0,$inout5
- aes${dir} $rndkey0,$inout6
- aes${dir} $rndkey0,$inout7
- $movkey -16($key,%rax),$rndkey0
- jnz .L${dir}_loop8
-
- aes${dir} $rndkey1,$inout0
- aes${dir} $rndkey1,$inout1
- aes${dir} $rndkey1,$inout2
- aes${dir} $rndkey1,$inout3
- aes${dir} $rndkey1,$inout4
- aes${dir} $rndkey1,$inout5
- aes${dir} $rndkey1,$inout6
- aes${dir} $rndkey1,$inout7
- aes${dir}last $rndkey0,$inout0
- aes${dir}last $rndkey0,$inout1
- aes${dir}last $rndkey0,$inout2
- aes${dir}last $rndkey0,$inout3
- aes${dir}last $rndkey0,$inout4
- aes${dir}last $rndkey0,$inout5
- aes${dir}last $rndkey0,$inout6
- aes${dir}last $rndkey0,$inout7
- ret
- .size _aesni_${dir}rypt8,.-_aesni_${dir}rypt8
- ___
- }
- &aesni_generate2("enc") if ($PREFIX eq "aesni");
- &aesni_generate2("dec");
- &aesni_generate3("enc") if ($PREFIX eq "aesni");
- &aesni_generate3("dec");
- &aesni_generate4("enc") if ($PREFIX eq "aesni");
- &aesni_generate4("dec");
- &aesni_generate6("enc") if ($PREFIX eq "aesni");
- &aesni_generate6("dec");
- &aesni_generate8("enc") if ($PREFIX eq "aesni");
- &aesni_generate8("dec");
-
- if ($PREFIX eq "aesni") {
- ########################################################################
- # void aesni_ecb_encrypt (const void *in, void *out,
- # size_t length, const AES_KEY *key,
- # int enc);
- $code.=<<___;
- .globl aesni_ecb_encrypt
- .type aesni_ecb_encrypt,\@function,5
- .align 16
- aesni_ecb_encrypt:
- ___
- $code.=<<___ if ($win64);
- lea -0x58(%rsp),%rsp
- movaps %xmm6,(%rsp) # offload $inout4..7
- movaps %xmm7,0x10(%rsp)
- movaps %xmm8,0x20(%rsp)
- movaps %xmm9,0x30(%rsp)
- .Lecb_enc_body:
- ___
- $code.=<<___;
- and \$-16,$len # if ($len<16)
- jz .Lecb_ret # return
-
- mov 240($key),$rounds # key->rounds
- $movkey ($key),$rndkey0
- mov $key,$key_ # backup $key
- mov $rounds,$rnds_ # backup $rounds
- test %r8d,%r8d # 5th argument
- jz .Lecb_decrypt
- #--------------------------- ECB ENCRYPT ------------------------------#
- cmp \$0x80,$len # if ($len<8*16)
- jb .Lecb_enc_tail # short input
-
- movdqu ($inp),$inout0 # load 8 input blocks
- movdqu 0x10($inp),$inout1
- movdqu 0x20($inp),$inout2
- movdqu 0x30($inp),$inout3
- movdqu 0x40($inp),$inout4
- movdqu 0x50($inp),$inout5
- movdqu 0x60($inp),$inout6
- movdqu 0x70($inp),$inout7
- lea 0x80($inp),$inp # $inp+=8*16
- sub \$0x80,$len # $len-=8*16 (can be zero)
- jmp .Lecb_enc_loop8_enter
- .align 16
- .Lecb_enc_loop8:
- movups $inout0,($out) # store 8 output blocks
- mov $key_,$key # restore $key
- movdqu ($inp),$inout0 # load 8 input blocks
- mov $rnds_,$rounds # restore $rounds
- movups $inout1,0x10($out)
- movdqu 0x10($inp),$inout1
- movups $inout2,0x20($out)
- movdqu 0x20($inp),$inout2
- movups $inout3,0x30($out)
- movdqu 0x30($inp),$inout3
- movups $inout4,0x40($out)
- movdqu 0x40($inp),$inout4
- movups $inout5,0x50($out)
- movdqu 0x50($inp),$inout5
- movups $inout6,0x60($out)
- movdqu 0x60($inp),$inout6
- movups $inout7,0x70($out)
- lea 0x80($out),$out # $out+=8*16
- movdqu 0x70($inp),$inout7
- lea 0x80($inp),$inp # $inp+=8*16
- .Lecb_enc_loop8_enter:
-
- call _aesni_encrypt8
-
- sub \$0x80,$len
- jnc .Lecb_enc_loop8 # loop if $len-=8*16 didn't borrow
-
- movups $inout0,($out) # store 8 output blocks
- mov $key_,$key # restore $key
- movups $inout1,0x10($out)
- mov $rnds_,$rounds # restore $rounds
- movups $inout2,0x20($out)
- movups $inout3,0x30($out)
- movups $inout4,0x40($out)
- movups $inout5,0x50($out)
- movups $inout6,0x60($out)
- movups $inout7,0x70($out)
- lea 0x80($out),$out # $out+=8*16
- add \$0x80,$len # restore real remaining $len
- jz .Lecb_ret # done if ($len==0)
-
- .Lecb_enc_tail: # $len is less than 8*16
- movups ($inp),$inout0
- cmp \$0x20,$len
- jb .Lecb_enc_one
- movups 0x10($inp),$inout1
- je .Lecb_enc_two
- movups 0x20($inp),$inout2
- cmp \$0x40,$len
- jb .Lecb_enc_three
- movups 0x30($inp),$inout3
- je .Lecb_enc_four
- movups 0x40($inp),$inout4
- cmp \$0x60,$len
- jb .Lecb_enc_five
- movups 0x50($inp),$inout5
- je .Lecb_enc_six
- movdqu 0x60($inp),$inout6
- xorps $inout7,$inout7
- call _aesni_encrypt8
- movups $inout0,($out) # store 7 output blocks
- movups $inout1,0x10($out)
- movups $inout2,0x20($out)
- movups $inout3,0x30($out)
- movups $inout4,0x40($out)
- movups $inout5,0x50($out)
- movups $inout6,0x60($out)
- jmp .Lecb_ret
- .align 16
- .Lecb_enc_one:
- ___
- &aesni_generate1("enc",$key,$rounds);
- $code.=<<___;
- movups $inout0,($out) # store one output block
- jmp .Lecb_ret
- .align 16
- .Lecb_enc_two:
- call _aesni_encrypt2
- movups $inout0,($out) # store 2 output blocks
- movups $inout1,0x10($out)
- jmp .Lecb_ret
- .align 16
- .Lecb_enc_three:
- call _aesni_encrypt3
- movups $inout0,($out) # store 3 output blocks
- movups $inout1,0x10($out)
- movups $inout2,0x20($out)
- jmp .Lecb_ret
- .align 16
- .Lecb_enc_four:
- call _aesni_encrypt4
- movups $inout0,($out) # store 4 output blocks
- movups $inout1,0x10($out)
- movups $inout2,0x20($out)
- movups $inout3,0x30($out)
- jmp .Lecb_ret
- .align 16
- .Lecb_enc_five:
- xorps $inout5,$inout5
- call _aesni_encrypt6
- movups $inout0,($out) # store 5 output blocks
- movups $inout1,0x10($out)
- movups $inout2,0x20($out)
- movups $inout3,0x30($out)
- movups $inout4,0x40($out)
- jmp .Lecb_ret
- .align 16
- .Lecb_enc_six:
- call _aesni_encrypt6
- movups $inout0,($out) # store 6 output blocks
- movups $inout1,0x10($out)
- movups $inout2,0x20($out)
- movups $inout3,0x30($out)
- movups $inout4,0x40($out)
- movups $inout5,0x50($out)
- jmp .Lecb_ret
- #--------------------------- ECB DECRYPT ------------------------------#
- .align 16
- .Lecb_decrypt:
- cmp \$0x80,$len # if ($len<8*16)
- jb .Lecb_dec_tail # short input
-
- movdqu ($inp),$inout0 # load 8 input blocks
- movdqu 0x10($inp),$inout1
- movdqu 0x20($inp),$inout2
- movdqu 0x30($inp),$inout3
- movdqu 0x40($inp),$inout4
- movdqu 0x50($inp),$inout5
- movdqu 0x60($inp),$inout6
- movdqu 0x70($inp),$inout7
- lea 0x80($inp),$inp # $inp+=8*16
- sub \$0x80,$len # $len-=8*16 (can be zero)
- jmp .Lecb_dec_loop8_enter
- .align 16
- .Lecb_dec_loop8:
- movups $inout0,($out) # store 8 output blocks
- mov $key_,$key # restore $key
- movdqu ($inp),$inout0 # load 8 input blocks
- mov $rnds_,$rounds # restore $rounds
- movups $inout1,0x10($out)
- movdqu 0x10($inp),$inout1
- movups $inout2,0x20($out)
- movdqu 0x20($inp),$inout2
- movups $inout3,0x30($out)
- movdqu 0x30($inp),$inout3
- movups $inout4,0x40($out)
- movdqu 0x40($inp),$inout4
- movups $inout5,0x50($out)
- movdqu 0x50($inp),$inout5
- movups $inout6,0x60($out)
- movdqu 0x60($inp),$inout6
- movups $inout7,0x70($out)
- lea 0x80($out),$out # $out+=8*16
- movdqu 0x70($inp),$inout7
- lea 0x80($inp),$inp # $inp+=8*16
- .Lecb_dec_loop8_enter:
-
- call _aesni_decrypt8
-
- $movkey ($key_),$rndkey0
- sub \$0x80,$len
- jnc .Lecb_dec_loop8 # loop if $len-=8*16 didn't borrow
-
- movups $inout0,($out) # store 8 output blocks
- pxor $inout0,$inout0 # clear register bank
- mov $key_,$key # restore $key
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- mov $rnds_,$rounds # restore $rounds
- movups $inout2,0x20($out)
- pxor $inout2,$inout2
- movups $inout3,0x30($out)
- pxor $inout3,$inout3
- movups $inout4,0x40($out)
- pxor $inout4,$inout4
- movups $inout5,0x50($out)
- pxor $inout5,$inout5
- movups $inout6,0x60($out)
- pxor $inout6,$inout6
- movups $inout7,0x70($out)
- pxor $inout7,$inout7
- lea 0x80($out),$out # $out+=8*16
- add \$0x80,$len # restore real remaining $len
- jz .Lecb_ret # done if ($len==0)
-
- .Lecb_dec_tail:
- movups ($inp),$inout0
- cmp \$0x20,$len
- jb .Lecb_dec_one
- movups 0x10($inp),$inout1
- je .Lecb_dec_two
- movups 0x20($inp),$inout2
- cmp \$0x40,$len
- jb .Lecb_dec_three
- movups 0x30($inp),$inout3
- je .Lecb_dec_four
- movups 0x40($inp),$inout4
- cmp \$0x60,$len
- jb .Lecb_dec_five
- movups 0x50($inp),$inout5
- je .Lecb_dec_six
- movups 0x60($inp),$inout6
- $movkey ($key),$rndkey0
- xorps $inout7,$inout7
- call _aesni_decrypt8
- movups $inout0,($out) # store 7 output blocks
- pxor $inout0,$inout0 # clear register bank
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- movups $inout2,0x20($out)
- pxor $inout2,$inout2
- movups $inout3,0x30($out)
- pxor $inout3,$inout3
- movups $inout4,0x40($out)
- pxor $inout4,$inout4
- movups $inout5,0x50($out)
- pxor $inout5,$inout5
- movups $inout6,0x60($out)
- pxor $inout6,$inout6
- pxor $inout7,$inout7
- jmp .Lecb_ret
- .align 16
- .Lecb_dec_one:
- ___
- &aesni_generate1("dec",$key,$rounds);
- $code.=<<___;
- movups $inout0,($out) # store one output block
- pxor $inout0,$inout0 # clear register bank
- jmp .Lecb_ret
- .align 16
- .Lecb_dec_two:
- call _aesni_decrypt2
- movups $inout0,($out) # store 2 output blocks
- pxor $inout0,$inout0 # clear register bank
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- jmp .Lecb_ret
- .align 16
- .Lecb_dec_three:
- call _aesni_decrypt3
- movups $inout0,($out) # store 3 output blocks
- pxor $inout0,$inout0 # clear register bank
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- movups $inout2,0x20($out)
- pxor $inout2,$inout2
- jmp .Lecb_ret
- .align 16
- .Lecb_dec_four:
- call _aesni_decrypt4
- movups $inout0,($out) # store 4 output blocks
- pxor $inout0,$inout0 # clear register bank
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- movups $inout2,0x20($out)
- pxor $inout2,$inout2
- movups $inout3,0x30($out)
- pxor $inout3,$inout3
- jmp .Lecb_ret
- .align 16
- .Lecb_dec_five:
- xorps $inout5,$inout5
- call _aesni_decrypt6
- movups $inout0,($out) # store 5 output blocks
- pxor $inout0,$inout0 # clear register bank
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- movups $inout2,0x20($out)
- pxor $inout2,$inout2
- movups $inout3,0x30($out)
- pxor $inout3,$inout3
- movups $inout4,0x40($out)
- pxor $inout4,$inout4
- pxor $inout5,$inout5
- jmp .Lecb_ret
- .align 16
- .Lecb_dec_six:
- call _aesni_decrypt6
- movups $inout0,($out) # store 6 output blocks
- pxor $inout0,$inout0 # clear register bank
- movups $inout1,0x10($out)
- pxor $inout1,$inout1
- movups $inout2,0x20($out)
- pxor $inout2,$inout2
- movups $inout3,0x30($out)
- pxor $inout3,$inout3
- movups $inout4,0x40($out)
- pxor $inout4,$inout4
- movups $inout5,0x50($out)
- pxor $inout5,$inout5
-
- .Lecb_ret:
- xorps $rndkey0,$rndkey0 # %xmm0
- pxor $rndkey1,$rndkey1
- ___
- $code.=<<___ if ($win64);
- movaps (%rsp),%xmm6
- movaps %xmm0,(%rsp) # clear stack
- movaps 0x10(%rsp),%xmm7
- movaps %xmm0,0x10(%rsp)
- movaps 0x20(%rsp),%xmm8
- movaps %xmm0,0x20(%rsp)
- movaps 0x30(%rsp),%xmm9
- movaps %xmm0,0x30(%rsp)
- lea 0x58(%rsp),%rsp
- .Lecb_enc_ret:
- ___
- $code.=<<___;
- ret
- .size aesni_ecb_encrypt,.-aesni_ecb_encrypt
- ___
-
- {
- ######################################################################
- # void aesni_ccm64_[en|de]crypt_blocks (const void *in, void *out,
- # size_t blocks, const AES_KEY *key,
- # const char *ivec,char *cmac);
- #
- # Handles only complete blocks, operates on 64-bit counter and
- # does not update *ivec! Nor does it finalize CMAC value
- # (see engine/eng_aesni.c for details)
- #
- {
- my $cmac="%r9"; # 6th argument
-
- my $increment="%xmm9";
- my $iv="%xmm6";
- my $bswap_mask="%xmm7";
-
- $code.=<<___;
- .globl aesni_ccm64_encrypt_blocks
- .type aesni_ccm64_encrypt_blocks,\@function,6
- .align 16
- aesni_ccm64_encrypt_blocks:
- ___
- $code.=<<___ if ($win64);
- lea -0x58(%rsp),%rsp
- movaps %xmm6,(%rsp) # $iv
- movaps %xmm7,0x10(%rsp) # $bswap_mask
- movaps %xmm8,0x20(%rsp) # $in0
- movaps %xmm9,0x30(%rsp) # $increment
- .Lccm64_enc_body:
- ___
- $code.=<<___;
- mov 240($key),$rounds # key->rounds
- movdqu ($ivp),$iv
- movdqa .Lincrement64(%rip),$increment
- movdqa .Lbswap_mask(%rip),$bswap_mask
-
- shl \$4,$rounds
- mov \$16,$rnds_
- lea 0($key),$key_
- movdqu ($cmac),$inout1
- movdqa $iv,$inout0
- lea 32($key,$rounds),$key # end of key schedule
- pshufb $bswap_mask,$iv
- sub %rax,%r10 # twisted $rounds
- jmp .Lccm64_enc_outer
- .align 16
- .Lccm64_enc_outer:
- $movkey ($key_),$rndkey0
- mov %r10,%rax
- movups ($inp),$in0 # load inp
-
- xorps $rndkey0,$inout0 # counter
- $movkey 16($key_),$rndkey1
- xorps $in0,$rndkey0
- xorps $rndkey0,$inout1 # cmac^=inp
- $movkey 32($key_),$rndkey0
-
- .Lccm64_enc2_loop:
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aesenc $rndkey0,$inout0
- aesenc $rndkey0,$inout1
- $movkey -16($key,%rax),$rndkey0
- jnz .Lccm64_enc2_loop
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- paddq $increment,$iv
- dec $len # $len-- ($len is in blocks)
- aesenclast $rndkey0,$inout0
- aesenclast $rndkey0,$inout1
-
- lea 16($inp),$inp
- xorps $inout0,$in0 # inp ^= E(iv)
- movdqa $iv,$inout0
- movups $in0,($out) # save output
- pshufb $bswap_mask,$inout0
- lea 16($out),$out # $out+=16
- jnz .Lccm64_enc_outer # loop if ($len!=0)
-
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- pxor $inout0,$inout0
- movups $inout1,($cmac) # store resulting mac
- pxor $inout1,$inout1
- pxor $in0,$in0
- pxor $iv,$iv
- ___
- $code.=<<___ if ($win64);
- movaps (%rsp),%xmm6
- movaps %xmm0,(%rsp) # clear stack
- movaps 0x10(%rsp),%xmm7
- movaps %xmm0,0x10(%rsp)
- movaps 0x20(%rsp),%xmm8
- movaps %xmm0,0x20(%rsp)
- movaps 0x30(%rsp),%xmm9
- movaps %xmm0,0x30(%rsp)
- lea 0x58(%rsp),%rsp
- .Lccm64_enc_ret:
- ___
- $code.=<<___;
- ret
- .size aesni_ccm64_encrypt_blocks,.-aesni_ccm64_encrypt_blocks
- ___
- ######################################################################
- $code.=<<___;
- .globl aesni_ccm64_decrypt_blocks
- .type aesni_ccm64_decrypt_blocks,\@function,6
- .align 16
- aesni_ccm64_decrypt_blocks:
- ___
- $code.=<<___ if ($win64);
- lea -0x58(%rsp),%rsp
- movaps %xmm6,(%rsp) # $iv
- movaps %xmm7,0x10(%rsp) # $bswap_mask
- movaps %xmm8,0x20(%rsp) # $in8
- movaps %xmm9,0x30(%rsp) # $increment
- .Lccm64_dec_body:
- ___
- $code.=<<___;
- mov 240($key),$rounds # key->rounds
- movups ($ivp),$iv
- movdqu ($cmac),$inout1
- movdqa .Lincrement64(%rip),$increment
- movdqa .Lbswap_mask(%rip),$bswap_mask
-
- movaps $iv,$inout0
- mov $rounds,$rnds_
- mov $key,$key_
- pshufb $bswap_mask,$iv
- ___
- &aesni_generate1("enc",$key,$rounds);
- $code.=<<___;
- shl \$4,$rnds_
- mov \$16,$rounds
- movups ($inp),$in0 # load inp
- paddq $increment,$iv
- lea 16($inp),$inp # $inp+=16
- sub %r10,%rax # twisted $rounds
- lea 32($key_,$rnds_),$key # end of key schedule
- mov %rax,%r10
- jmp .Lccm64_dec_outer
- .align 16
- .Lccm64_dec_outer:
- xorps $inout0,$in0 # inp ^= E(iv)
- movdqa $iv,$inout0
- movups $in0,($out) # save output
- lea 16($out),$out # $out+=16
- pshufb $bswap_mask,$inout0
-
- sub \$1,$len # $len-- ($len is in blocks)
- jz .Lccm64_dec_break # if ($len==0) break
-
- $movkey ($key_),$rndkey0
- mov %r10,%rax
- $movkey 16($key_),$rndkey1
- xorps $rndkey0,$in0
- xorps $rndkey0,$inout0
- xorps $in0,$inout1 # cmac^=out
- $movkey 32($key_),$rndkey0
- jmp .Lccm64_dec2_loop
- .align 16
- .Lccm64_dec2_loop:
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- $movkey ($key,%rax),$rndkey1
- add \$32,%rax
- aesenc $rndkey0,$inout0
- aesenc $rndkey0,$inout1
- $movkey -16($key,%rax),$rndkey0
- jnz .Lccm64_dec2_loop
- movups ($inp),$in0 # load input
- paddq $increment,$iv
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- aesenclast $rndkey0,$inout0
- aesenclast $rndkey0,$inout1
- lea 16($inp),$inp # $inp+=16
- jmp .Lccm64_dec_outer
-
- .align 16
- .Lccm64_dec_break:
- #xorps $in0,$inout1 # cmac^=out
- mov 240($key_),$rounds
- ___
- &aesni_generate1("enc",$key_,$rounds,$inout1,$in0);
- $code.=<<___;
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- pxor $inout0,$inout0
- movups $inout1,($cmac) # store resulting mac
- pxor $inout1,$inout1
- pxor $in0,$in0
- pxor $iv,$iv
- ___
- $code.=<<___ if ($win64);
- movaps (%rsp),%xmm6
- movaps %xmm0,(%rsp) # clear stack
- movaps 0x10(%rsp),%xmm7
- movaps %xmm0,0x10(%rsp)
- movaps 0x20(%rsp),%xmm8
- movaps %xmm0,0x20(%rsp)
- movaps 0x30(%rsp),%xmm9
- movaps %xmm0,0x30(%rsp)
- lea 0x58(%rsp),%rsp
- .Lccm64_dec_ret:
- ___
- $code.=<<___;
- ret
- .size aesni_ccm64_decrypt_blocks,.-aesni_ccm64_decrypt_blocks
- ___
- }
- ######################################################################
- # void aesni_ctr32_encrypt_blocks (const void *in, void *out,
- # size_t blocks, const AES_KEY *key,
- # const char *ivec);
- #
- # Handles only complete blocks, operates on 32-bit counter and
- # does not update *ivec! (see crypto/modes/ctr128.c for details)
- #
- # Overhaul based on suggestions from Shay Gueron and Vlad Krasnov,
- # http://rt.openssl.org/Ticket/Display.html?id=3021&user=guest&pass=guest.
- # Keywords are full unroll and modulo-schedule counter calculations
- # with zero-round key xor.
- {
- my ($in0,$in1,$in2,$in3,$in4,$in5)=map("%xmm$_",(10..15));
- my ($key0,$ctr)=("${key_}d","${ivp}d");
- my $frame_size = 0x80 + ($win64?160:0);
-
- $code.=<<___;
- .globl aesni_ctr32_encrypt_blocks
- .type aesni_ctr32_encrypt_blocks,\@function,5
- .align 16
- aesni_ctr32_encrypt_blocks:
- cmp \$1,$len
- jne .Lctr32_bulk
-
- # handle single block without allocating stack frame,
- # useful when handling edges
- movups ($ivp),$inout0
- movups ($inp),$inout1
- mov 240($key),%edx # key->rounds
- ___
- &aesni_generate1("enc",$key,"%edx");
- $code.=<<___;
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- xorps $inout1,$inout0
- pxor $inout1,$inout1
- movups $inout0,($out)
- xorps $inout0,$inout0
- jmp .Lctr32_epilogue
-
- .align 16
- .Lctr32_bulk:
- lea (%rsp),%rax
- push %rbp
- sub \$$frame_size,%rsp
- and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
- ___
- $code.=<<___ if ($win64);
- movaps %xmm6,-0xa8(%rax) # offload everything
- movaps %xmm7,-0x98(%rax)
- movaps %xmm8,-0x88(%rax)
- movaps %xmm9,-0x78(%rax)
- movaps %xmm10,-0x68(%rax)
- movaps %xmm11,-0x58(%rax)
- movaps %xmm12,-0x48(%rax)
- movaps %xmm13,-0x38(%rax)
- movaps %xmm14,-0x28(%rax)
- movaps %xmm15,-0x18(%rax)
- .Lctr32_body:
- ___
- $code.=<<___;
- lea -8(%rax),%rbp
-
- # 8 16-byte words on top of stack are counter values
- # xor-ed with zero-round key
-
- movdqu ($ivp),$inout0
- movdqu ($key),$rndkey0
- mov 12($ivp),$ctr # counter LSB
- pxor $rndkey0,$inout0
- mov 12($key),$key0 # 0-round key LSB
- movdqa $inout0,0x00(%rsp) # populate counter block
- bswap $ctr
- movdqa $inout0,$inout1
- movdqa $inout0,$inout2
- movdqa $inout0,$inout3
- movdqa $inout0,0x40(%rsp)
- movdqa $inout0,0x50(%rsp)
- movdqa $inout0,0x60(%rsp)
- mov %rdx,%r10 # about to borrow %rdx
- movdqa $inout0,0x70(%rsp)
-
- lea 1($ctr),%rax
- lea 2($ctr),%rdx
- bswap %eax
- bswap %edx
- xor $key0,%eax
- xor $key0,%edx
- pinsrd \$3,%eax,$inout1
- lea 3($ctr),%rax
- movdqa $inout1,0x10(%rsp)
- pinsrd \$3,%edx,$inout2
- bswap %eax
- mov %r10,%rdx # restore %rdx
- lea 4($ctr),%r10
- movdqa $inout2,0x20(%rsp)
- xor $key0,%eax
- bswap %r10d
- pinsrd \$3,%eax,$inout3
- xor $key0,%r10d
- movdqa $inout3,0x30(%rsp)
- lea 5($ctr),%r9
- mov %r10d,0x40+12(%rsp)
- bswap %r9d
- lea 6($ctr),%r10
- mov 240($key),$rounds # key->rounds
- xor $key0,%r9d
- bswap %r10d
- mov %r9d,0x50+12(%rsp)
- xor $key0,%r10d
- lea 7($ctr),%r9
- mov %r10d,0x60+12(%rsp)
- bswap %r9d
- mov OPENSSL_ia32cap_P+4(%rip),%r10d
- xor $key0,%r9d
- and \$`1<<26|1<<22`,%r10d # isolate XSAVE+MOVBE
- mov %r9d,0x70+12(%rsp)
-
- $movkey 0x10($key),$rndkey1
-
- movdqa 0x40(%rsp),$inout4
- movdqa 0x50(%rsp),$inout5
-
- cmp \$8,$len # $len is in blocks
- jb .Lctr32_tail # short input if ($len<8)
-
- sub \$6,$len # $len is biased by -6
- cmp \$`1<<22`,%r10d # check for MOVBE without XSAVE
- je .Lctr32_6x # [which denotes Atom Silvermont]
-
- lea 0x80($key),$key # size optimization
- sub \$2,$len # $len is biased by -8
- jmp .Lctr32_loop8
-
- .align 16
- .Lctr32_6x:
- shl \$4,$rounds
- mov \$48,$rnds_
- bswap $key0
- lea 32($key,$rounds),$key # end of key schedule
- sub %rax,%r10 # twisted $rounds
- jmp .Lctr32_loop6
-
- .align 16
- .Lctr32_loop6:
- add \$6,$ctr # next counter value
- $movkey -48($key,$rnds_),$rndkey0
- aesenc $rndkey1,$inout0
- mov $ctr,%eax
- xor $key0,%eax
- aesenc $rndkey1,$inout1
- movbe %eax,`0x00+12`(%rsp) # store next counter value
- lea 1($ctr),%eax
- aesenc $rndkey1,$inout2
- xor $key0,%eax
- movbe %eax,`0x10+12`(%rsp)
- aesenc $rndkey1,$inout3
- lea 2($ctr),%eax
- xor $key0,%eax
- aesenc $rndkey1,$inout4
- movbe %eax,`0x20+12`(%rsp)
- lea 3($ctr),%eax
- aesenc $rndkey1,$inout5
- $movkey -32($key,$rnds_),$rndkey1
- xor $key0,%eax
-
- aesenc $rndkey0,$inout0
- movbe %eax,`0x30+12`(%rsp)
- lea 4($ctr),%eax
- aesenc $rndkey0,$inout1
- xor $key0,%eax
- movbe %eax,`0x40+12`(%rsp)
- aesenc $rndkey0,$inout2
- lea 5($ctr),%eax
- xor $key0,%eax
- aesenc $rndkey0,$inout3
- movbe %eax,`0x50+12`(%rsp)
- mov %r10,%rax # mov $rnds_,$rounds
- aesenc $rndkey0,$inout4
- aesenc $rndkey0,$inout5
- $movkey -16($key,$rnds_),$rndkey0
-
- call .Lenc_loop6
-
- movdqu ($inp),$inout6 # load 6 input blocks
- movdqu 0x10($inp),$inout7
- movdqu 0x20($inp),$in0
- movdqu 0x30($inp),$in1
- movdqu 0x40($inp),$in2
- movdqu 0x50($inp),$in3
- lea 0x60($inp),$inp # $inp+=6*16
- $movkey -64($key,$rnds_),$rndkey1
- pxor $inout0,$inout6 # inp^=E(ctr)
- movaps 0x00(%rsp),$inout0 # load next counter [xor-ed with 0 round]
- pxor $inout1,$inout7
- movaps 0x10(%rsp),$inout1
- pxor $inout2,$in0
- movaps 0x20(%rsp),$inout2
- pxor $inout3,$in1
- movaps 0x30(%rsp),$inout3
- pxor $inout4,$in2
- movaps 0x40(%rsp),$inout4
- pxor $inout5,$in3
- movaps 0x50(%rsp),$inout5
- movdqu $inout6,($out) # store 6 output blocks
- movdqu $inout7,0x10($out)
- movdqu $in0,0x20($out)
- movdqu $in1,0x30($out)
- movdqu $in2,0x40($out)
- movdqu $in3,0x50($out)
- lea 0x60($out),$out # $out+=6*16
-
- sub \$6,$len
- jnc .Lctr32_loop6 # loop if $len-=6 didn't borrow
-
- add \$6,$len # restore real remaining $len
- jz .Lctr32_done # done if ($len==0)
-
- lea -48($rnds_),$rounds
- lea -80($key,$rnds_),$key # restore $key
- neg $rounds
- shr \$4,$rounds # restore $rounds
- jmp .Lctr32_tail
-
- .align 32
- .Lctr32_loop8:
- add \$8,$ctr # next counter value
- movdqa 0x60(%rsp),$inout6
- aesenc $rndkey1,$inout0
- mov $ctr,%r9d
- movdqa 0x70(%rsp),$inout7
- aesenc $rndkey1,$inout1
- bswap %r9d
- $movkey 0x20-0x80($key),$rndkey0
- aesenc $rndkey1,$inout2
- xor $key0,%r9d
- nop
- aesenc $rndkey1,$inout3
- mov %r9d,0x00+12(%rsp) # store next counter value
- lea 1($ctr),%r9
- aesenc $rndkey1,$inout4
- aesenc $rndkey1,$inout5
- aesenc $rndkey1,$inout6
- aesenc $rndkey1,$inout7
- $movkey 0x30-0x80($key),$rndkey1
- ___
- for($i=2;$i<8;$i++) {
- my $rndkeyx = ($i&1)?$rndkey1:$rndkey0;
- $code.=<<___;
- bswap %r9d
- aesenc $rndkeyx,$inout0
- aesenc $rndkeyx,$inout1
- xor $key0,%r9d
- .byte 0x66,0x90
- aesenc $rndkeyx,$inout2
- aesenc $rndkeyx,$inout3
- mov %r9d,`0x10*($i-1)`+12(%rsp)
- lea $i($ctr),%r9
- aesenc $rndkeyx,$inout4
- aesenc $rndkeyx,$inout5
- aesenc $rndkeyx,$inout6
- aesenc $rndkeyx,$inout7
- $movkey `0x20+0x10*$i`-0x80($key),$rndkeyx
- ___
- }
- $code.=<<___;
- bswap %r9d
- aesenc $rndkey0,$inout0
- aesenc $rndkey0,$inout1
- aesenc $rndkey0,$inout2
- xor $key0,%r9d
- movdqu 0x00($inp),$in0 # start loading input
- aesenc $rndkey0,$inout3
- mov %r9d,0x70+12(%rsp)
- cmp \$11,$rounds
- aesenc $rndkey0,$inout4
- aesenc $rndkey0,$inout5
- aesenc $rndkey0,$inout6
- aesenc $rndkey0,$inout7
- $movkey 0xa0-0x80($key),$rndkey0
-
- jb .Lctr32_enc_done
-
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- aesenc $rndkey1,$inout4
- aesenc $rndkey1,$inout5
- aesenc $rndkey1,$inout6
- aesenc $rndkey1,$inout7
- $movkey 0xb0-0x80($key),$rndkey1
-
- aesenc $rndkey0,$inout0
- aesenc $rndkey0,$inout1
- aesenc $rndkey0,$inout2
- aesenc $rndkey0,$inout3
- aesenc $rndkey0,$inout4
- aesenc $rndkey0,$inout5
- aesenc $rndkey0,$inout6
- aesenc $rndkey0,$inout7
- $movkey 0xc0-0x80($key),$rndkey0
- je .Lctr32_enc_done
-
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- aesenc $rndkey1,$inout4
- aesenc $rndkey1,$inout5
- aesenc $rndkey1,$inout6
- aesenc $rndkey1,$inout7
- $movkey 0xd0-0x80($key),$rndkey1
-
- aesenc $rndkey0,$inout0
- aesenc $rndkey0,$inout1
- aesenc $rndkey0,$inout2
- aesenc $rndkey0,$inout3
- aesenc $rndkey0,$inout4
- aesenc $rndkey0,$inout5
- aesenc $rndkey0,$inout6
- aesenc $rndkey0,$inout7
- $movkey 0xe0-0x80($key),$rndkey0
- jmp .Lctr32_enc_done
-
- .align 16
- .Lctr32_enc_done:
- movdqu 0x10($inp),$in1
- pxor $rndkey0,$in0 # input^=round[last]
- movdqu 0x20($inp),$in2
- pxor $rndkey0,$in1
- movdqu 0x30($inp),$in3
- pxor $rndkey0,$in2
- movdqu 0x40($inp),$in4
- pxor $rndkey0,$in3
- movdqu 0x50($inp),$in5
- pxor $rndkey0,$in4
- pxor $rndkey0,$in5
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- aesenc $rndkey1,$inout4
- aesenc $rndkey1,$inout5
- aesenc $rndkey1,$inout6
- aesenc $rndkey1,$inout7
- movdqu 0x60($inp),$rndkey1 # borrow $rndkey1 for inp[6]
- lea 0x80($inp),$inp # $inp+=8*16
-
- aesenclast $in0,$inout0 # $inN is inp[N]^round[last]
- pxor $rndkey0,$rndkey1 # borrowed $rndkey
- movdqu 0x70-0x80($inp),$in0
- aesenclast $in1,$inout1
- pxor $rndkey0,$in0
- movdqa 0x00(%rsp),$in1 # load next counter block
- aesenclast $in2,$inout2
- aesenclast $in3,$inout3
- movdqa 0x10(%rsp),$in2
- movdqa 0x20(%rsp),$in3
- aesenclast $in4,$inout4
- aesenclast $in5,$inout5
- movdqa 0x30(%rsp),$in4
- movdqa 0x40(%rsp),$in5
- aesenclast $rndkey1,$inout6
- movdqa 0x50(%rsp),$rndkey0
- $movkey 0x10-0x80($key),$rndkey1#real 1st-round key
- aesenclast $in0,$inout7
-
- movups $inout0,($out) # store 8 output blocks
- movdqa $in1,$inout0
- movups $inout1,0x10($out)
- movdqa $in2,$inout1
- movups $inout2,0x20($out)
- movdqa $in3,$inout2
- movups $inout3,0x30($out)
- movdqa $in4,$inout3
- movups $inout4,0x40($out)
- movdqa $in5,$inout4
- movups $inout5,0x50($out)
- movdqa $rndkey0,$inout5
- movups $inout6,0x60($out)
- movups $inout7,0x70($out)
- lea 0x80($out),$out # $out+=8*16
-
- sub \$8,$len
- jnc .Lctr32_loop8 # loop if $len-=8 didn't borrow
-
- add \$8,$len # restore real remainig $len
- jz .Lctr32_done # done if ($len==0)
- lea -0x80($key),$key
-
- .Lctr32_tail:
- # note that at this point $inout0..5 are populated with
- # counter values xor-ed with 0-round key
- lea 16($key),$key
- cmp \$4,$len
- jb .Lctr32_loop3
- je .Lctr32_loop4
-
- # if ($len>4) compute 7 E(counter)
- shl \$4,$rounds
- movdqa 0x60(%rsp),$inout6
- pxor $inout7,$inout7
-
- $movkey 16($key),$rndkey0
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- lea 32-16($key,$rounds),$key# prepare for .Lenc_loop8_enter
- neg %rax
- aesenc $rndkey1,$inout2
- add \$16,%rax # prepare for .Lenc_loop8_enter
- movups ($inp),$in0
- aesenc $rndkey1,$inout3
- aesenc $rndkey1,$inout4
- movups 0x10($inp),$in1 # pre-load input
- movups 0x20($inp),$in2
- aesenc $rndkey1,$inout5
- aesenc $rndkey1,$inout6
-
- call .Lenc_loop8_enter
-
- movdqu 0x30($inp),$in3
- pxor $in0,$inout0
- movdqu 0x40($inp),$in0
- pxor $in1,$inout1
- movdqu $inout0,($out) # store output
- pxor $in2,$inout2
- movdqu $inout1,0x10($out)
- pxor $in3,$inout3
- movdqu $inout2,0x20($out)
- pxor $in0,$inout4
- movdqu $inout3,0x30($out)
- movdqu $inout4,0x40($out)
- cmp \$6,$len
- jb .Lctr32_done # $len was 5, stop store
-
- movups 0x50($inp),$in1
- xorps $in1,$inout5
- movups $inout5,0x50($out)
- je .Lctr32_done # $len was 6, stop store
-
- movups 0x60($inp),$in2
- xorps $in2,$inout6
- movups $inout6,0x60($out)
- jmp .Lctr32_done # $len was 7, stop store
-
- .align 32
- .Lctr32_loop4:
- aesenc $rndkey1,$inout0
- lea 16($key),$key
- dec $rounds
- aesenc $rndkey1,$inout1
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- $movkey ($key),$rndkey1
- jnz .Lctr32_loop4
- aesenclast $rndkey1,$inout0
- aesenclast $rndkey1,$inout1
- movups ($inp),$in0 # load input
- movups 0x10($inp),$in1
- aesenclast $rndkey1,$inout2
- aesenclast $rndkey1,$inout3
- movups 0x20($inp),$in2
- movups 0x30($inp),$in3
-
- xorps $in0,$inout0
- movups $inout0,($out) # store output
- xorps $in1,$inout1
- movups $inout1,0x10($out)
- pxor $in2,$inout2
- movdqu $inout2,0x20($out)
- pxor $in3,$inout3
- movdqu $inout3,0x30($out)
- jmp .Lctr32_done # $len was 4, stop store
-
- .align 32
- .Lctr32_loop3:
- aesenc $rndkey1,$inout0
- lea 16($key),$key
- dec $rounds
- aesenc $rndkey1,$inout1
- aesenc $rndkey1,$inout2
- $movkey ($key),$rndkey1
- jnz .Lctr32_loop3
- aesenclast $rndkey1,$inout0
- aesenclast $rndkey1,$inout1
- aesenclast $rndkey1,$inout2
-
- movups ($inp),$in0 # load input
- xorps $in0,$inout0
- movups $inout0,($out) # store output
- cmp \$2,$len
- jb .Lctr32_done # $len was 1, stop store
-
- movups 0x10($inp),$in1
- xorps $in1,$inout1
- movups $inout1,0x10($out)
- je .Lctr32_done # $len was 2, stop store
-
- movups 0x20($inp),$in2
- xorps $in2,$inout2
- movups $inout2,0x20($out) # $len was 3, stop store
-
- .Lctr32_done:
- xorps %xmm0,%xmm0 # clear regiser bank
- xor $key0,$key0
- pxor %xmm1,%xmm1
- pxor %xmm2,%xmm2
- pxor %xmm3,%xmm3
- pxor %xmm4,%xmm4
- pxor %xmm5,%xmm5
- ___
- $code.=<<___ if (!$win64);
- pxor %xmm6,%xmm6
- pxor %xmm7,%xmm7
- movaps %xmm0,0x00(%rsp) # clear stack
- pxor %xmm8,%xmm8
- movaps %xmm0,0x10(%rsp)
- pxor %xmm9,%xmm9
- movaps %xmm0,0x20(%rsp)
- pxor %xmm10,%xmm10
- movaps %xmm0,0x30(%rsp)
- pxor %xmm11,%xmm11
- movaps %xmm0,0x40(%rsp)
- pxor %xmm12,%xmm12
- movaps %xmm0,0x50(%rsp)
- pxor %xmm13,%xmm13
- movaps %xmm0,0x60(%rsp)
- pxor %xmm14,%xmm14
- movaps %xmm0,0x70(%rsp)
- pxor %xmm15,%xmm15
- ___
- $code.=<<___ if ($win64);
- movaps -0xa0(%rbp),%xmm6
- movaps %xmm0,-0xa0(%rbp) # clear stack
- movaps -0x90(%rbp),%xmm7
- movaps %xmm0,-0x90(%rbp)
- movaps -0x80(%rbp),%xmm8
- movaps %xmm0,-0x80(%rbp)
- movaps -0x70(%rbp),%xmm9
- movaps %xmm0,-0x70(%rbp)
- movaps -0x60(%rbp),%xmm10
- movaps %xmm0,-0x60(%rbp)
- movaps -0x50(%rbp),%xmm11
- movaps %xmm0,-0x50(%rbp)
- movaps -0x40(%rbp),%xmm12
- movaps %xmm0,-0x40(%rbp)
- movaps -0x30(%rbp),%xmm13
- movaps %xmm0,-0x30(%rbp)
- movaps -0x20(%rbp),%xmm14
- movaps %xmm0,-0x20(%rbp)
- movaps -0x10(%rbp),%xmm15
- movaps %xmm0,-0x10(%rbp)
- movaps %xmm0,0x00(%rsp)
- movaps %xmm0,0x10(%rsp)
- movaps %xmm0,0x20(%rsp)
- movaps %xmm0,0x30(%rsp)
- movaps %xmm0,0x40(%rsp)
- movaps %xmm0,0x50(%rsp)
- movaps %xmm0,0x60(%rsp)
- movaps %xmm0,0x70(%rsp)
- ___
- $code.=<<___;
- lea (%rbp),%rsp
- pop %rbp
- .Lctr32_epilogue:
- ret
- .size aesni_ctr32_encrypt_blocks,.-aesni_ctr32_encrypt_blocks
- ___
- }
-
- ######################################################################
- # void aesni_xts_[en|de]crypt(const char *inp,char *out,size_t len,
- # const AES_KEY *key1, const AES_KEY *key2
- # const unsigned char iv[16]);
- #
- {
- my @tweak=map("%xmm$_",(10..15));
- my ($twmask,$twres,$twtmp)=("%xmm8","%xmm9",@tweak[4]);
- my ($key2,$ivp,$len_)=("%r8","%r9","%r9");
- my $frame_size = 0x70 + ($win64?160:0);
-
- $code.=<<___;
- .globl aesni_xts_encrypt
- .type aesni_xts_encrypt,\@function,6
- .align 16
- aesni_xts_encrypt:
- lea (%rsp),%rax
- push %rbp
- sub \$$frame_size,%rsp
- and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
- ___
- $code.=<<___ if ($win64);
- movaps %xmm6,-0xa8(%rax) # offload everything
- movaps %xmm7,-0x98(%rax)
- movaps %xmm8,-0x88(%rax)
- movaps %xmm9,-0x78(%rax)
- movaps %xmm10,-0x68(%rax)
- movaps %xmm11,-0x58(%rax)
- movaps %xmm12,-0x48(%rax)
- movaps %xmm13,-0x38(%rax)
- movaps %xmm14,-0x28(%rax)
- movaps %xmm15,-0x18(%rax)
- .Lxts_enc_body:
- ___
- $code.=<<___;
- lea -8(%rax),%rbp
- movups ($ivp),$inout0 # load clear-text tweak
- mov 240(%r8),$rounds # key2->rounds
- mov 240($key),$rnds_ # key1->rounds
- ___
- # generate the tweak
- &aesni_generate1("enc",$key2,$rounds,$inout0);
- $code.=<<___;
- $movkey ($key),$rndkey0 # zero round key
- mov $key,$key_ # backup $key
- mov $rnds_,$rounds # backup $rounds
- shl \$4,$rnds_
- mov $len,$len_ # backup $len
- and \$-16,$len
-
- $movkey 16($key,$rnds_),$rndkey1 # last round key
-
- movdqa .Lxts_magic(%rip),$twmask
- movdqa $inout0,@tweak[5]
- pshufd \$0x5f,$inout0,$twres
- pxor $rndkey0,$rndkey1
- ___
- # alternative tweak calculation algorithm is based on suggestions
- # by Shay Gueron. psrad doesn't conflict with AES-NI instructions
- # and should help in the future...
- for ($i=0;$i<4;$i++) {
- $code.=<<___;
- movdqa $twres,$twtmp
- paddd $twres,$twres
- movdqa @tweak[5],@tweak[$i]
- psrad \$31,$twtmp # broadcast upper bits
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twtmp
- pxor $rndkey0,@tweak[$i]
- pxor $twtmp,@tweak[5]
- ___
- }
- $code.=<<___;
- movdqa @tweak[5],@tweak[4]
- psrad \$31,$twres
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twres
- pxor $rndkey0,@tweak[4]
- pxor $twres,@tweak[5]
- movaps $rndkey1,0x60(%rsp) # save round[0]^round[last]
-
- sub \$16*6,$len
- jc .Lxts_enc_short # if $len-=6*16 borrowed
-
- mov \$16+96,$rounds
- lea 32($key_,$rnds_),$key # end of key schedule
- sub %r10,%rax # twisted $rounds
- $movkey 16($key_),$rndkey1
- mov %rax,%r10 # backup twisted $rounds
- lea .Lxts_magic(%rip),%r8
- jmp .Lxts_enc_grandloop
-
- .align 32
- .Lxts_enc_grandloop:
- movdqu `16*0`($inp),$inout0 # load input
- movdqa $rndkey0,$twmask
- movdqu `16*1`($inp),$inout1
- pxor @tweak[0],$inout0 # input^=tweak^round[0]
- movdqu `16*2`($inp),$inout2
- pxor @tweak[1],$inout1
- aesenc $rndkey1,$inout0
- movdqu `16*3`($inp),$inout3
- pxor @tweak[2],$inout2
- aesenc $rndkey1,$inout1
- movdqu `16*4`($inp),$inout4
- pxor @tweak[3],$inout3
- aesenc $rndkey1,$inout2
- movdqu `16*5`($inp),$inout5
- pxor @tweak[5],$twmask # round[0]^=tweak[5]
- movdqa 0x60(%rsp),$twres # load round[0]^round[last]
- pxor @tweak[4],$inout4
- aesenc $rndkey1,$inout3
- $movkey 32($key_),$rndkey0
- lea `16*6`($inp),$inp
- pxor $twmask,$inout5
-
- pxor $twres,@tweak[0] # calclulate tweaks^round[last]
- aesenc $rndkey1,$inout4
- pxor $twres,@tweak[1]
- movdqa @tweak[0],`16*0`(%rsp) # put aside tweaks^round[last]
- aesenc $rndkey1,$inout5
- $movkey 48($key_),$rndkey1
- pxor $twres,@tweak[2]
-
- aesenc $rndkey0,$inout0
- pxor $twres,@tweak[3]
- movdqa @tweak[1],`16*1`(%rsp)
- aesenc $rndkey0,$inout1
- pxor $twres,@tweak[4]
- movdqa @tweak[2],`16*2`(%rsp)
- aesenc $rndkey0,$inout2
- aesenc $rndkey0,$inout3
- pxor $twres,$twmask
- movdqa @tweak[4],`16*4`(%rsp)
- aesenc $rndkey0,$inout4
- aesenc $rndkey0,$inout5
- $movkey 64($key_),$rndkey0
- movdqa $twmask,`16*5`(%rsp)
- pshufd \$0x5f,@tweak[5],$twres
- jmp .Lxts_enc_loop6
- .align 32
- .Lxts_enc_loop6:
- aesenc $rndkey1,$inout0
- aesenc $rndkey1,$inout1
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- aesenc $rndkey1,$inout4
- aesenc $rndkey1,$inout5
- $movkey -64($key,%rax),$rndkey1
- add \$32,%rax
-
- aesenc $rndkey0,$inout0
- aesenc $rndkey0,$inout1
- aesenc $rndkey0,$inout2
- aesenc $rndkey0,$inout3
- aesenc $rndkey0,$inout4
- aesenc $rndkey0,$inout5
- $movkey -80($key,%rax),$rndkey0
- jnz .Lxts_enc_loop6
-
- movdqa (%r8),$twmask # start calculating next tweak
- movdqa $twres,$twtmp
- paddd $twres,$twres
- aesenc $rndkey1,$inout0
- paddq @tweak[5],@tweak[5]
- psrad \$31,$twtmp
- aesenc $rndkey1,$inout1
- pand $twmask,$twtmp
- $movkey ($key_),@tweak[0] # load round[0]
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- aesenc $rndkey1,$inout4
- pxor $twtmp,@tweak[5]
- movaps @tweak[0],@tweak[1] # copy round[0]
- aesenc $rndkey1,$inout5
- $movkey -64($key),$rndkey1
-
- movdqa $twres,$twtmp
- aesenc $rndkey0,$inout0
- paddd $twres,$twres
- pxor @tweak[5],@tweak[0]
- aesenc $rndkey0,$inout1
- psrad \$31,$twtmp
- paddq @tweak[5],@tweak[5]
- aesenc $rndkey0,$inout2
- aesenc $rndkey0,$inout3
- pand $twmask,$twtmp
- movaps @tweak[1],@tweak[2]
- aesenc $rndkey0,$inout4
- pxor $twtmp,@tweak[5]
- movdqa $twres,$twtmp
- aesenc $rndkey0,$inout5
- $movkey -48($key),$rndkey0
-
- paddd $twres,$twres
- aesenc $rndkey1,$inout0
- pxor @tweak[5],@tweak[1]
- psrad \$31,$twtmp
- aesenc $rndkey1,$inout1
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twtmp
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- movdqa @tweak[3],`16*3`(%rsp)
- pxor $twtmp,@tweak[5]
- aesenc $rndkey1,$inout4
- movaps @tweak[2],@tweak[3]
- movdqa $twres,$twtmp
- aesenc $rndkey1,$inout5
- $movkey -32($key),$rndkey1
-
- paddd $twres,$twres
- aesenc $rndkey0,$inout0
- pxor @tweak[5],@tweak[2]
- psrad \$31,$twtmp
- aesenc $rndkey0,$inout1
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twtmp
- aesenc $rndkey0,$inout2
- aesenc $rndkey0,$inout3
- aesenc $rndkey0,$inout4
- pxor $twtmp,@tweak[5]
- movaps @tweak[3],@tweak[4]
- aesenc $rndkey0,$inout5
-
- movdqa $twres,$rndkey0
- paddd $twres,$twres
- aesenc $rndkey1,$inout0
- pxor @tweak[5],@tweak[3]
- psrad \$31,$rndkey0
- aesenc $rndkey1,$inout1
- paddq @tweak[5],@tweak[5]
- pand $twmask,$rndkey0
- aesenc $rndkey1,$inout2
- aesenc $rndkey1,$inout3
- pxor $rndkey0,@tweak[5]
- $movkey ($key_),$rndkey0
- aesenc $rndkey1,$inout4
- aesenc $rndkey1,$inout5
- $movkey 16($key_),$rndkey1
-
- pxor @tweak[5],@tweak[4]
- aesenclast `16*0`(%rsp),$inout0
- psrad \$31,$twres
- paddq @tweak[5],@tweak[5]
- aesenclast `16*1`(%rsp),$inout1
- aesenclast `16*2`(%rsp),$inout2
- pand $twmask,$twres
- mov %r10,%rax # restore $rounds
- aesenclast `16*3`(%rsp),$inout3
- aesenclast `16*4`(%rsp),$inout4
- aesenclast `16*5`(%rsp),$inout5
- pxor $twres,@tweak[5]
-
- lea `16*6`($out),$out # $out+=6*16
- movups $inout0,`-16*6`($out) # store 6 output blocks
- movups $inout1,`-16*5`($out)
- movups $inout2,`-16*4`($out)
- movups $inout3,`-16*3`($out)
- movups $inout4,`-16*2`($out)
- movups $inout5,`-16*1`($out)
- sub \$16*6,$len
- jnc .Lxts_enc_grandloop # loop if $len-=6*16 didn't borrow
-
- mov \$16+96,$rounds
- sub $rnds_,$rounds
- mov $key_,$key # restore $key
- shr \$4,$rounds # restore original value
-
- .Lxts_enc_short:
- # at the point @tweak[0..5] are populated with tweak values
- mov $rounds,$rnds_ # backup $rounds
- pxor $rndkey0,@tweak[0]
- add \$16*6,$len # restore real remaining $len
- jz .Lxts_enc_done # done if ($len==0)
-
- pxor $rndkey0,@tweak[1]
- cmp \$0x20,$len
- jb .Lxts_enc_one # $len is 1*16
- pxor $rndkey0,@tweak[2]
- je .Lxts_enc_two # $len is 2*16
-
- pxor $rndkey0,@tweak[3]
- cmp \$0x40,$len
- jb .Lxts_enc_three # $len is 3*16
- pxor $rndkey0,@tweak[4]
- je .Lxts_enc_four # $len is 4*16
-
- movdqu ($inp),$inout0 # $len is 5*16
- movdqu 16*1($inp),$inout1
- movdqu 16*2($inp),$inout2
- pxor @tweak[0],$inout0
- movdqu 16*3($inp),$inout3
- pxor @tweak[1],$inout1
- movdqu 16*4($inp),$inout4
- lea 16*5($inp),$inp # $inp+=5*16
- pxor @tweak[2],$inout2
- pxor @tweak[3],$inout3
- pxor @tweak[4],$inout4
- pxor $inout5,$inout5
-
- call _aesni_encrypt6
-
- xorps @tweak[0],$inout0
- movdqa @tweak[5],@tweak[0]
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
- movdqu $inout0,($out) # store 5 output blocks
- xorps @tweak[3],$inout3
- movdqu $inout1,16*1($out)
- xorps @tweak[4],$inout4
- movdqu $inout2,16*2($out)
- movdqu $inout3,16*3($out)
- movdqu $inout4,16*4($out)
- lea 16*5($out),$out # $out+=5*16
- jmp .Lxts_enc_done
-
- .align 16
- .Lxts_enc_one:
- movups ($inp),$inout0
- lea 16*1($inp),$inp # inp+=1*16
- xorps @tweak[0],$inout0
- ___
- &aesni_generate1("enc",$key,$rounds);
- $code.=<<___;
- xorps @tweak[0],$inout0
- movdqa @tweak[1],@tweak[0]
- movups $inout0,($out) # store one output block
- lea 16*1($out),$out # $out+=1*16
- jmp .Lxts_enc_done
-
- .align 16
- .Lxts_enc_two:
- movups ($inp),$inout0
- movups 16($inp),$inout1
- lea 32($inp),$inp # $inp+=2*16
- xorps @tweak[0],$inout0
- xorps @tweak[1],$inout1
-
- call _aesni_encrypt2
-
- xorps @tweak[0],$inout0
- movdqa @tweak[2],@tweak[0]
- xorps @tweak[1],$inout1
- movups $inout0,($out) # store 2 output blocks
- movups $inout1,16*1($out)
- lea 16*2($out),$out # $out+=2*16
- jmp .Lxts_enc_done
-
- .align 16
- .Lxts_enc_three:
- movups ($inp),$inout0
- movups 16*1($inp),$inout1
- movups 16*2($inp),$inout2
- lea 16*3($inp),$inp # $inp+=3*16
- xorps @tweak[0],$inout0
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
-
- call _aesni_encrypt3
-
- xorps @tweak[0],$inout0
- movdqa @tweak[3],@tweak[0]
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
- movups $inout0,($out) # store 3 output blocks
- movups $inout1,16*1($out)
- movups $inout2,16*2($out)
- lea 16*3($out),$out # $out+=3*16
- jmp .Lxts_enc_done
-
- .align 16
- .Lxts_enc_four:
- movups ($inp),$inout0
- movups 16*1($inp),$inout1
- movups 16*2($inp),$inout2
- xorps @tweak[0],$inout0
- movups 16*3($inp),$inout3
- lea 16*4($inp),$inp # $inp+=4*16
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
- xorps @tweak[3],$inout3
-
- call _aesni_encrypt4
-
- pxor @tweak[0],$inout0
- movdqa @tweak[4],@tweak[0]
- pxor @tweak[1],$inout1
- pxor @tweak[2],$inout2
- movdqu $inout0,($out) # store 4 output blocks
- pxor @tweak[3],$inout3
- movdqu $inout1,16*1($out)
- movdqu $inout2,16*2($out)
- movdqu $inout3,16*3($out)
- lea 16*4($out),$out # $out+=4*16
- jmp .Lxts_enc_done
-
- .align 16
- .Lxts_enc_done:
- and \$15,$len_ # see if $len%16 is 0
- jz .Lxts_enc_ret
- mov $len_,$len
-
- .Lxts_enc_steal:
- movzb ($inp),%eax # borrow $rounds ...
- movzb -16($out),%ecx # ... and $key
- lea 1($inp),$inp
- mov %al,-16($out)
- mov %cl,0($out)
- lea 1($out),$out
- sub \$1,$len
- jnz .Lxts_enc_steal
-
- sub $len_,$out # rewind $out
- mov $key_,$key # restore $key
- mov $rnds_,$rounds # restore $rounds
-
- movups -16($out),$inout0
- xorps @tweak[0],$inout0
- ___
- &aesni_generate1("enc",$key,$rounds);
- $code.=<<___;
- xorps @tweak[0],$inout0
- movups $inout0,-16($out)
-
- .Lxts_enc_ret:
- xorps %xmm0,%xmm0 # clear register bank
- pxor %xmm1,%xmm1
- pxor %xmm2,%xmm2
- pxor %xmm3,%xmm3
- pxor %xmm4,%xmm4
- pxor %xmm5,%xmm5
- ___
- $code.=<<___ if (!$win64);
- pxor %xmm6,%xmm6
- pxor %xmm7,%xmm7
- movaps %xmm0,0x00(%rsp) # clear stack
- pxor %xmm8,%xmm8
- movaps %xmm0,0x10(%rsp)
- pxor %xmm9,%xmm9
- movaps %xmm0,0x20(%rsp)
- pxor %xmm10,%xmm10
- movaps %xmm0,0x30(%rsp)
- pxor %xmm11,%xmm11
- movaps %xmm0,0x40(%rsp)
- pxor %xmm12,%xmm12
- movaps %xmm0,0x50(%rsp)
- pxor %xmm13,%xmm13
- movaps %xmm0,0x60(%rsp)
- pxor %xmm14,%xmm14
- pxor %xmm15,%xmm15
- ___
- $code.=<<___ if ($win64);
- movaps -0xa0(%rbp),%xmm6
- movaps %xmm0,-0xa0(%rbp) # clear stack
- movaps -0x90(%rbp),%xmm7
- movaps %xmm0,-0x90(%rbp)
- movaps -0x80(%rbp),%xmm8
- movaps %xmm0,-0x80(%rbp)
- movaps -0x70(%rbp),%xmm9
- movaps %xmm0,-0x70(%rbp)
- movaps -0x60(%rbp),%xmm10
- movaps %xmm0,-0x60(%rbp)
- movaps -0x50(%rbp),%xmm11
- movaps %xmm0,-0x50(%rbp)
- movaps -0x40(%rbp),%xmm12
- movaps %xmm0,-0x40(%rbp)
- movaps -0x30(%rbp),%xmm13
- movaps %xmm0,-0x30(%rbp)
- movaps -0x20(%rbp),%xmm14
- movaps %xmm0,-0x20(%rbp)
- movaps -0x10(%rbp),%xmm15
- movaps %xmm0,-0x10(%rbp)
- movaps %xmm0,0x00(%rsp)
- movaps %xmm0,0x10(%rsp)
- movaps %xmm0,0x20(%rsp)
- movaps %xmm0,0x30(%rsp)
- movaps %xmm0,0x40(%rsp)
- movaps %xmm0,0x50(%rsp)
- movaps %xmm0,0x60(%rsp)
- ___
- $code.=<<___;
- lea (%rbp),%rsp
- pop %rbp
- .Lxts_enc_epilogue:
- ret
- .size aesni_xts_encrypt,.-aesni_xts_encrypt
- ___
-
- $code.=<<___;
- .globl aesni_xts_decrypt
- .type aesni_xts_decrypt,\@function,6
- .align 16
- aesni_xts_decrypt:
- lea (%rsp),%rax
- push %rbp
- sub \$$frame_size,%rsp
- and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
- ___
- $code.=<<___ if ($win64);
- movaps %xmm6,-0xa8(%rax) # offload everything
- movaps %xmm7,-0x98(%rax)
- movaps %xmm8,-0x88(%rax)
- movaps %xmm9,-0x78(%rax)
- movaps %xmm10,-0x68(%rax)
- movaps %xmm11,-0x58(%rax)
- movaps %xmm12,-0x48(%rax)
- movaps %xmm13,-0x38(%rax)
- movaps %xmm14,-0x28(%rax)
- movaps %xmm15,-0x18(%rax)
- .Lxts_dec_body:
- ___
- $code.=<<___;
- lea -8(%rax),%rbp
- movups ($ivp),$inout0 # load clear-text tweak
- mov 240($key2),$rounds # key2->rounds
- mov 240($key),$rnds_ # key1->rounds
- ___
- # generate the tweak
- &aesni_generate1("enc",$key2,$rounds,$inout0);
- $code.=<<___;
- xor %eax,%eax # if ($len%16) len-=16;
- test \$15,$len
- setnz %al
- shl \$4,%rax
- sub %rax,$len
-
- $movkey ($key),$rndkey0 # zero round key
- mov $key,$key_ # backup $key
- mov $rnds_,$rounds # backup $rounds
- shl \$4,$rnds_
- mov $len,$len_ # backup $len
- and \$-16,$len
-
- $movkey 16($key,$rnds_),$rndkey1 # last round key
-
- movdqa .Lxts_magic(%rip),$twmask
- movdqa $inout0,@tweak[5]
- pshufd \$0x5f,$inout0,$twres
- pxor $rndkey0,$rndkey1
- ___
- for ($i=0;$i<4;$i++) {
- $code.=<<___;
- movdqa $twres,$twtmp
- paddd $twres,$twres
- movdqa @tweak[5],@tweak[$i]
- psrad \$31,$twtmp # broadcast upper bits
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twtmp
- pxor $rndkey0,@tweak[$i]
- pxor $twtmp,@tweak[5]
- ___
- }
- $code.=<<___;
- movdqa @tweak[5],@tweak[4]
- psrad \$31,$twres
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twres
- pxor $rndkey0,@tweak[4]
- pxor $twres,@tweak[5]
- movaps $rndkey1,0x60(%rsp) # save round[0]^round[last]
-
- sub \$16*6,$len
- jc .Lxts_dec_short # if $len-=6*16 borrowed
-
- mov \$16+96,$rounds
- lea 32($key_,$rnds_),$key # end of key schedule
- sub %r10,%rax # twisted $rounds
- $movkey 16($key_),$rndkey1
- mov %rax,%r10 # backup twisted $rounds
- lea .Lxts_magic(%rip),%r8
- jmp .Lxts_dec_grandloop
-
- .align 32
- .Lxts_dec_grandloop:
- movdqu `16*0`($inp),$inout0 # load input
- movdqa $rndkey0,$twmask
- movdqu `16*1`($inp),$inout1
- pxor @tweak[0],$inout0 # intput^=tweak^round[0]
- movdqu `16*2`($inp),$inout2
- pxor @tweak[1],$inout1
- aesdec $rndkey1,$inout0
- movdqu `16*3`($inp),$inout3
- pxor @tweak[2],$inout2
- aesdec $rndkey1,$inout1
- movdqu `16*4`($inp),$inout4
- pxor @tweak[3],$inout3
- aesdec $rndkey1,$inout2
- movdqu `16*5`($inp),$inout5
- pxor @tweak[5],$twmask # round[0]^=tweak[5]
- movdqa 0x60(%rsp),$twres # load round[0]^round[last]
- pxor @tweak[4],$inout4
- aesdec $rndkey1,$inout3
- $movkey 32($key_),$rndkey0
- lea `16*6`($inp),$inp
- pxor $twmask,$inout5
-
- pxor $twres,@tweak[0] # calclulate tweaks^round[last]
- aesdec $rndkey1,$inout4
- pxor $twres,@tweak[1]
- movdqa @tweak[0],`16*0`(%rsp) # put aside tweaks^last round key
- aesdec $rndkey1,$inout5
- $movkey 48($key_),$rndkey1
- pxor $twres,@tweak[2]
-
- aesdec $rndkey0,$inout0
- pxor $twres,@tweak[3]
- movdqa @tweak[1],`16*1`(%rsp)
- aesdec $rndkey0,$inout1
- pxor $twres,@tweak[4]
- movdqa @tweak[2],`16*2`(%rsp)
- aesdec $rndkey0,$inout2
- aesdec $rndkey0,$inout3
- pxor $twres,$twmask
- movdqa @tweak[4],`16*4`(%rsp)
- aesdec $rndkey0,$inout4
- aesdec $rndkey0,$inout5
- $movkey 64($key_),$rndkey0
- movdqa $twmask,`16*5`(%rsp)
- pshufd \$0x5f,@tweak[5],$twres
- jmp .Lxts_dec_loop6
- .align 32
- .Lxts_dec_loop6:
- aesdec $rndkey1,$inout0
- aesdec $rndkey1,$inout1
- aesdec $rndkey1,$inout2
- aesdec $rndkey1,$inout3
- aesdec $rndkey1,$inout4
- aesdec $rndkey1,$inout5
- $movkey -64($key,%rax),$rndkey1
- add \$32,%rax
-
- aesdec $rndkey0,$inout0
- aesdec $rndkey0,$inout1
- aesdec $rndkey0,$inout2
- aesdec $rndkey0,$inout3
- aesdec $rndkey0,$inout4
- aesdec $rndkey0,$inout5
- $movkey -80($key,%rax),$rndkey0
- jnz .Lxts_dec_loop6
-
- movdqa (%r8),$twmask # start calculating next tweak
- movdqa $twres,$twtmp
- paddd $twres,$twres
- aesdec $rndkey1,$inout0
- paddq @tweak[5],@tweak[5]
- psrad \$31,$twtmp
- aesdec $rndkey1,$inout1
- pand $twmask,$twtmp
- $movkey ($key_),@tweak[0] # load round[0]
- aesdec $rndkey1,$inout2
- aesdec $rndkey1,$inout3
- aesdec $rndkey1,$inout4
- pxor $twtmp,@tweak[5]
- movaps @tweak[0],@tweak[1] # copy round[0]
- aesdec $rndkey1,$inout5
- $movkey -64($key),$rndkey1
-
- movdqa $twres,$twtmp
- aesdec $rndkey0,$inout0
- paddd $twres,$twres
- pxor @tweak[5],@tweak[0]
- aesdec $rndkey0,$inout1
- psrad \$31,$twtmp
- paddq @tweak[5],@tweak[5]
- aesdec $rndkey0,$inout2
- aesdec $rndkey0,$inout3
- pand $twmask,$twtmp
- movaps @tweak[1],@tweak[2]
- aesdec $rndkey0,$inout4
- pxor $twtmp,@tweak[5]
- movdqa $twres,$twtmp
- aesdec $rndkey0,$inout5
- $movkey -48($key),$rndkey0
-
- paddd $twres,$twres
- aesdec $rndkey1,$inout0
- pxor @tweak[5],@tweak[1]
- psrad \$31,$twtmp
- aesdec $rndkey1,$inout1
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twtmp
- aesdec $rndkey1,$inout2
- aesdec $rndkey1,$inout3
- movdqa @tweak[3],`16*3`(%rsp)
- pxor $twtmp,@tweak[5]
- aesdec $rndkey1,$inout4
- movaps @tweak[2],@tweak[3]
- movdqa $twres,$twtmp
- aesdec $rndkey1,$inout5
- $movkey -32($key),$rndkey1
-
- paddd $twres,$twres
- aesdec $rndkey0,$inout0
- pxor @tweak[5],@tweak[2]
- psrad \$31,$twtmp
- aesdec $rndkey0,$inout1
- paddq @tweak[5],@tweak[5]
- pand $twmask,$twtmp
- aesdec $rndkey0,$inout2
- aesdec $rndkey0,$inout3
- aesdec $rndkey0,$inout4
- pxor $twtmp,@tweak[5]
- movaps @tweak[3],@tweak[4]
- aesdec $rndkey0,$inout5
-
- movdqa $twres,$rndkey0
- paddd $twres,$twres
- aesdec $rndkey1,$inout0
- pxor @tweak[5],@tweak[3]
- psrad \$31,$rndkey0
- aesdec $rndkey1,$inout1
- paddq @tweak[5],@tweak[5]
- pand $twmask,$rndkey0
- aesdec $rndkey1,$inout2
- aesdec $rndkey1,$inout3
- pxor $rndkey0,@tweak[5]
- $movkey ($key_),$rndkey0
- aesdec $rndkey1,$inout4
- aesdec $rndkey1,$inout5
- $movkey 16($key_),$rndkey1
-
- pxor @tweak[5],@tweak[4]
- aesdeclast `16*0`(%rsp),$inout0
- psrad \$31,$twres
- paddq @tweak[5],@tweak[5]
- aesdeclast `16*1`(%rsp),$inout1
- aesdeclast `16*2`(%rsp),$inout2
- pand $twmask,$twres
- mov %r10,%rax # restore $rounds
- aesdeclast `16*3`(%rsp),$inout3
- aesdeclast `16*4`(%rsp),$inout4
- aesdeclast `16*5`(%rsp),$inout5
- pxor $twres,@tweak[5]
-
- lea `16*6`($out),$out # $out+=6*16
- movups $inout0,`-16*6`($out) # store 6 output blocks
- movups $inout1,`-16*5`($out)
- movups $inout2,`-16*4`($out)
- movups $inout3,`-16*3`($out)
- movups $inout4,`-16*2`($out)
- movups $inout5,`-16*1`($out)
- sub \$16*6,$len
- jnc .Lxts_dec_grandloop # loop if $len-=6*16 didn't borrow
-
- mov \$16+96,$rounds
- sub $rnds_,$rounds
- mov $key_,$key # restore $key
- shr \$4,$rounds # restore original value
-
- .Lxts_dec_short:
- # at the point @tweak[0..5] are populated with tweak values
- mov $rounds,$rnds_ # backup $rounds
- pxor $rndkey0,@tweak[0]
- pxor $rndkey0,@tweak[1]
- add \$16*6,$len # restore real remaining $len
- jz .Lxts_dec_done # done if ($len==0)
-
- pxor $rndkey0,@tweak[2]
- cmp \$0x20,$len
- jb .Lxts_dec_one # $len is 1*16
- pxor $rndkey0,@tweak[3]
- je .Lxts_dec_two # $len is 2*16
-
- pxor $rndkey0,@tweak[4]
- cmp \$0x40,$len
- jb .Lxts_dec_three # $len is 3*16
- je .Lxts_dec_four # $len is 4*16
-
- movdqu ($inp),$inout0 # $len is 5*16
- movdqu 16*1($inp),$inout1
- movdqu 16*2($inp),$inout2
- pxor @tweak[0],$inout0
- movdqu 16*3($inp),$inout3
- pxor @tweak[1],$inout1
- movdqu 16*4($inp),$inout4
- lea 16*5($inp),$inp # $inp+=5*16
- pxor @tweak[2],$inout2
- pxor @tweak[3],$inout3
- pxor @tweak[4],$inout4
-
- call _aesni_decrypt6
-
- xorps @tweak[0],$inout0
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
- movdqu $inout0,($out) # store 5 output blocks
- xorps @tweak[3],$inout3
- movdqu $inout1,16*1($out)
- xorps @tweak[4],$inout4
- movdqu $inout2,16*2($out)
- pxor $twtmp,$twtmp
- movdqu $inout3,16*3($out)
- pcmpgtd @tweak[5],$twtmp
- movdqu $inout4,16*4($out)
- lea 16*5($out),$out # $out+=5*16
- pshufd \$0x13,$twtmp,@tweak[1] # $twres
- and \$15,$len_
- jz .Lxts_dec_ret
-
- movdqa @tweak[5],@tweak[0]
- paddq @tweak[5],@tweak[5] # psllq 1,$tweak
- pand $twmask,@tweak[1] # isolate carry and residue
- pxor @tweak[5],@tweak[1]
- jmp .Lxts_dec_done2
-
- .align 16
- .Lxts_dec_one:
- movups ($inp),$inout0
- lea 16*1($inp),$inp # $inp+=1*16
- xorps @tweak[0],$inout0
- ___
- &aesni_generate1("dec",$key,$rounds);
- $code.=<<___;
- xorps @tweak[0],$inout0
- movdqa @tweak[1],@tweak[0]
- movups $inout0,($out) # store one output block
- movdqa @tweak[2],@tweak[1]
- lea 16*1($out),$out # $out+=1*16
- jmp .Lxts_dec_done
-
- .align 16
- .Lxts_dec_two:
- movups ($inp),$inout0
- movups 16($inp),$inout1
- lea 32($inp),$inp # $inp+=2*16
- xorps @tweak[0],$inout0
- xorps @tweak[1],$inout1
-
- call _aesni_decrypt2
-
- xorps @tweak[0],$inout0
- movdqa @tweak[2],@tweak[0]
- xorps @tweak[1],$inout1
- movdqa @tweak[3],@tweak[1]
- movups $inout0,($out) # store 2 output blocks
- movups $inout1,16*1($out)
- lea 16*2($out),$out # $out+=2*16
- jmp .Lxts_dec_done
-
- .align 16
- .Lxts_dec_three:
- movups ($inp),$inout0
- movups 16*1($inp),$inout1
- movups 16*2($inp),$inout2
- lea 16*3($inp),$inp # $inp+=3*16
- xorps @tweak[0],$inout0
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
-
- call _aesni_decrypt3
-
- xorps @tweak[0],$inout0
- movdqa @tweak[3],@tweak[0]
- xorps @tweak[1],$inout1
- movdqa @tweak[4],@tweak[1]
- xorps @tweak[2],$inout2
- movups $inout0,($out) # store 3 output blocks
- movups $inout1,16*1($out)
- movups $inout2,16*2($out)
- lea 16*3($out),$out # $out+=3*16
- jmp .Lxts_dec_done
-
- .align 16
- .Lxts_dec_four:
- movups ($inp),$inout0
- movups 16*1($inp),$inout1
- movups 16*2($inp),$inout2
- xorps @tweak[0],$inout0
- movups 16*3($inp),$inout3
- lea 16*4($inp),$inp # $inp+=4*16
- xorps @tweak[1],$inout1
- xorps @tweak[2],$inout2
- xorps @tweak[3],$inout3
-
- call _aesni_decrypt4
-
- pxor @tweak[0],$inout0
- movdqa @tweak[4],@tweak[0]
- pxor @tweak[1],$inout1
- movdqa @tweak[5],@tweak[1]
- pxor @tweak[2],$inout2
- movdqu $inout0,($out) # store 4 output blocks
- pxor @tweak[3],$inout3
- movdqu $inout1,16*1($out)
- movdqu $inout2,16*2($out)
- movdqu $inout3,16*3($out)
- lea 16*4($out),$out # $out+=4*16
- jmp .Lxts_dec_done
-
- .align 16
- .Lxts_dec_done:
- and \$15,$len_ # see if $len%16 is 0
- jz .Lxts_dec_ret
- .Lxts_dec_done2:
- mov $len_,$len
- mov $key_,$key # restore $key
- mov $rnds_,$rounds # restore $rounds
-
- movups ($inp),$inout0
- xorps @tweak[1],$inout0
- ___
- &aesni_generate1("dec",$key,$rounds);
- $code.=<<___;
- xorps @tweak[1],$inout0
- movups $inout0,($out)
-
- .Lxts_dec_steal:
- movzb 16($inp),%eax # borrow $rounds ...
- movzb ($out),%ecx # ... and $key
- lea 1($inp),$inp
- mov %al,($out)
- mov %cl,16($out)
- lea 1($out),$out
- sub \$1,$len
- jnz .Lxts_dec_steal
-
- sub $len_,$out # rewind $out
- mov $key_,$key # restore $key
- mov $rnds_,$rounds # restore $rounds
-
- movups ($out),$inout0
- xorps @tweak[0],$inout0
- ___
- &aesni_generate1("dec",$key,$rounds);
- $code.=<<___;
- xorps @tweak[0],$inout0
- movups $inout0,($out)
-
- .Lxts_dec_ret:
- xorps %xmm0,%xmm0 # clear register bank
- pxor %xmm1,%xmm1
- pxor %xmm2,%xmm2
- pxor %xmm3,%xmm3
- pxor %xmm4,%xmm4
- pxor %xmm5,%xmm5
- ___
- $code.=<<___ if (!$win64);
- pxor %xmm6,%xmm6
- pxor %xmm7,%xmm7
- movaps %xmm0,0x00(%rsp) # clear stack
- pxor %xmm8,%xmm8
- movaps %xmm0,0x10(%rsp)
- pxor %xmm9,%xmm9
- movaps %xmm0,0x20(%rsp)
- pxor %xmm10,%xmm10
- movaps %xmm0,0x30(%rsp)
- pxor %xmm11,%xmm11
- movaps %xmm0,0x40(%rsp)
- pxor %xmm12,%xmm12
- movaps %xmm0,0x50(%rsp)
- pxor %xmm13,%xmm13
- movaps %xmm0,0x60(%rsp)
- pxor %xmm14,%xmm14
- pxor %xmm15,%xmm15
- ___
- $code.=<<___ if ($win64);
- movaps -0xa0(%rbp),%xmm6
- movaps %xmm0,-0xa0(%rbp) # clear stack
- movaps -0x90(%rbp),%xmm7
- movaps %xmm0,-0x90(%rbp)
- movaps -0x80(%rbp),%xmm8
- movaps %xmm0,-0x80(%rbp)
- movaps -0x70(%rbp),%xmm9
- movaps %xmm0,-0x70(%rbp)
- movaps -0x60(%rbp),%xmm10
- movaps %xmm0,-0x60(%rbp)
- movaps -0x50(%rbp),%xmm11
- movaps %xmm0,-0x50(%rbp)
- movaps -0x40(%rbp),%xmm12
- movaps %xmm0,-0x40(%rbp)
- movaps -0x30(%rbp),%xmm13
- movaps %xmm0,-0x30(%rbp)
- movaps -0x20(%rbp),%xmm14
- movaps %xmm0,-0x20(%rbp)
- movaps -0x10(%rbp),%xmm15
- movaps %xmm0,-0x10(%rbp)
- movaps %xmm0,0x00(%rsp)
- movaps %xmm0,0x10(%rsp)
- movaps %xmm0,0x20(%rsp)
- movaps %xmm0,0x30(%rsp)
- movaps %xmm0,0x40(%rsp)
- movaps %xmm0,0x50(%rsp)
- movaps %xmm0,0x60(%rsp)
- ___
- $code.=<<___;
- lea (%rbp),%rsp
- pop %rbp
- .Lxts_dec_epilogue:
- ret
- .size aesni_xts_decrypt,.-aesni_xts_decrypt
- ___
- } }}
-
- ########################################################################
- # void $PREFIX_cbc_encrypt (const void *inp, void *out,
- # size_t length, const AES_KEY *key,
- # unsigned char *ivp,const int enc);
- {
- my $frame_size = 0x10 + ($win64?0xa0:0); # used in decrypt
- my ($iv,$in0,$in1,$in2,$in3,$in4)=map("%xmm$_",(10..15));
- my $inp_=$key_;
-
- $code.=<<___;
- .globl ${PREFIX}_cbc_encrypt
- .type ${PREFIX}_cbc_encrypt,\@function,6
- .align 16
- ${PREFIX}_cbc_encrypt:
- test $len,$len # check length
- jz .Lcbc_ret
-
- mov 240($key),$rnds_ # key->rounds
- mov $key,$key_ # backup $key
- test %r9d,%r9d # 6th argument
- jz .Lcbc_decrypt
- #--------------------------- CBC ENCRYPT ------------------------------#
- movups ($ivp),$inout0 # load iv as initial state
- mov $rnds_,$rounds
- cmp \$16,$len
- jb .Lcbc_enc_tail
- sub \$16,$len
- jmp .Lcbc_enc_loop
- .align 16
- .Lcbc_enc_loop:
- movups ($inp),$inout1 # load input
- lea 16($inp),$inp
- #xorps $inout1,$inout0
- ___
- &aesni_generate1("enc",$key,$rounds,$inout0,$inout1);
- $code.=<<___;
- mov $rnds_,$rounds # restore $rounds
- mov $key_,$key # restore $key
- movups $inout0,0($out) # store output
- lea 16($out),$out
- sub \$16,$len
- jnc .Lcbc_enc_loop
- add \$16,$len
- jnz .Lcbc_enc_tail
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- movups $inout0,($ivp)
- pxor $inout0,$inout0
- pxor $inout1,$inout1
- jmp .Lcbc_ret
-
- .Lcbc_enc_tail:
- mov $len,%rcx # zaps $key
- xchg $inp,$out # $inp is %rsi and $out is %rdi now
- .long 0x9066A4F3 # rep movsb
- mov \$16,%ecx # zero tail
- sub $len,%rcx
- xor %eax,%eax
- .long 0x9066AAF3 # rep stosb
- lea -16(%rdi),%rdi # rewind $out by 1 block
- mov $rnds_,$rounds # restore $rounds
- mov %rdi,%rsi # $inp and $out are the same
- mov $key_,$key # restore $key
- xor $len,$len # len=16
- jmp .Lcbc_enc_loop # one more spin
- #--------------------------- CBC DECRYPT ------------------------------#
- .align 16
- .Lcbc_decrypt:
- cmp \$16,$len
- jne .Lcbc_decrypt_bulk
-
- # handle single block without allocating stack frame,
- # useful in ciphertext stealing mode
- movdqu ($inp),$inout0 # load input
- movdqu ($ivp),$inout1 # load iv
- movdqa $inout0,$inout2 # future iv
- ___
- &aesni_generate1("dec",$key,$rnds_);
- $code.=<<___;
- pxor $rndkey0,$rndkey0 # clear register bank
- pxor $rndkey1,$rndkey1
- movdqu $inout2,($ivp) # store iv
- xorps $inout1,$inout0 # ^=iv
- pxor $inout1,$inout1
- movups $inout0,($out) # store output
- pxor $inout0,$inout0
- jmp .Lcbc_ret
- .align 16
- .Lcbc_decrypt_bulk:
- lea (%rsp),%rax
- push %rbp
- sub \$$frame_size,%rsp
- and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
- ___
- $code.=<<___ if ($win64);
- movaps %xmm6,0x10(%rsp)
- movaps %xmm7,0x20(%rsp)
- movaps %xmm8,0x30(%rsp)
- movaps %xmm9,0x40(%rsp)
- movaps %xmm10,0x50(%rsp)
- movaps %xmm11,0x60(%rsp)
- movaps %xmm12,0x70(%rsp)
- movaps %xmm13,0x80(%rsp)
- movaps %xmm14,0x90(%rsp)
- movaps %xmm15,0xa0(%rsp)
- .Lcbc_decrypt_body:
- ___
- $code.=<<___;
- lea -8(%rax),%rbp
- movups ($ivp),$iv
- mov $rnds_,$rounds
- cmp \$0x50,$len
- jbe .Lcbc_dec_tail
-
- $movkey ($key),$rndkey0
- movdqu 0x00($inp),$inout0 # load input
- movdqu 0x10($inp),$inout1
- movdqa $inout0,$in0
- movdqu 0x20($inp),$inout2
- movdqa $inout1,$in1
- movdqu 0x30($inp),$inout3
- movdqa $inout2,$in2
- movdqu 0x40($inp),$inout4
- movdqa $inout3,$in3
- movdqu 0x50($inp),$inout5
- movdqa $inout4,$in4
- mov OPENSSL_ia32cap_P+4(%rip),%r9d
- cmp \$0x70,$len
- jbe .Lcbc_dec_six_or_seven
-
- and \$`1<<26|1<<22`,%r9d # isolate XSAVE+MOVBE
- sub \$0x50,$len # $len is biased by -5*16
- cmp \$`1<<22`,%r9d # check for MOVBE without XSAVE
- je .Lcbc_dec_loop6_enter # [which denotes Atom Silvermont]
- sub \$0x20,$len # $len is biased by -7*16
- lea 0x70($key),$key # size optimization
- jmp .Lcbc_dec_loop8_enter
- .align 16
- .Lcbc_dec_loop8:
- movups $inout7,($out)
- lea 0x10($out),$out
- .Lcbc_dec_loop8_enter:
- movdqu 0x60($inp),$inout6
- pxor $rndkey0,$inout0
- movdqu 0x70($inp),$inout7
- pxor $rndkey0,$inout1
- $movkey 0x10-0x70($key),$rndkey1
- pxor $rndkey0,$inout2
- xor $inp_,$inp_
- cmp \$0x70,$len # is there at least 0x60 bytes ahead?
- pxor $rndkey0,$inout3
- pxor $rndkey0,$inout4
- pxor $rndkey0,$inout5
- pxor $rndkey0,$inout6
-
- aesdec $rndkey1,$inout0
- pxor $rndkey0,$inout7
- $movkey 0x20-0x70($key),$rndkey0
- aesdec $rndkey1,$inout1
- aesdec $rndkey1,$inout2
- aesdec $rndkey1,$inout3
- aesdec $rndkey1,$inout4
- aesdec $rndkey1,$inout5
- aesdec $rndkey1,$inout6
- setnc ${inp_}b
- shl \$7,$inp_
- aesdec $rndkey1,$inout7
- add $inp,$inp_
- $movkey 0x30-0x70($key),$rndkey1
- ___
- for($i=1;$i<12;$i++) {
- my $rndkeyx = ($i&1)?$rndkey0:$rndkey1;
- $code.=<<___ if ($i==7);
- cmp \$11,$rounds
- ___
- $code.=<<___;
- aesdec $rndkeyx,$inout0
- aesdec $rndkeyx,$inout1
- aesdec $rndkeyx,$inout2
- aesdec $rndkeyx,$inout3
- aesdec $rndkeyx,$inout4
- aesdec $rndkeyx,$inout5
- aesdec $rndkeyx,$inout6
- aesdec $rndkeyx,$inout7
- $movkey `0x30+0x10*$i`-0x70($key),$rndkeyx
- ___
- $code.=<<___ if ($i<6 || (!($i&1) && $i>7));
- nop
- ___
- $code.=<<___ if ($i==7);
- jb .Lcbc_dec_done
- ___
- $code.=<<___ if ($i==9);
- je .Lcbc_dec_done
- ___
- $code.=<<___ if ($i==11);
- jmp .Lcbc_dec_done
- ___
- }
- $code.=<<___;
- .align 16
- .Lcbc_dec_done:
- aesdec $rndkey1,$inout0
- aesdec $rndkey1,$inout1
- pxor $rndkey0,$iv
- pxor $rndkey0,$in0
- aesdec $rndkey1,$inout2
- aesdec $rndkey1,$inout3
- pxor $rndkey0,$in1
- pxor $rndkey0,$in2
- aesdec $rndkey1,$inout4
- aesdec $rndkey1,$inout5
- pxor $rndkey0,$in3
- pxor $rndkey0,$in4
- aesdec $rndkey1,$inout6
- aesdec $rndkey1,$inout7
- movdqu 0x50($inp),$rndkey1
-
- aesdeclast $iv,$inout0
- movdqu 0x60($inp),$iv # borrow $iv
- pxor $rndkey0,$rndkey1
- aesdeclast $in0,$inout1
- pxor $rndkey0,$iv
- movdqu 0x70($inp),$rndkey0 # next IV
- aesdeclast $in1,$inout2
- lea 0x80($inp),$inp
- movdqu 0x00($inp_),$in0
- aesdeclast $in2,$inout3
- aesdeclast $in3,$inout4
- movdqu 0x10($inp_),$in1
- movdqu 0x20($inp_),$in2
- aesdeclast $in4,$inout5
- aesdeclast $rndkey1,$inout6
- movdqu 0x30($inp_),$in3
- movdqu 0x40($inp_),$in4
- aesdeclast $iv,$inout7
- movdqa $rndkey0,$iv # return $iv
- movdqu 0x50($inp_),$rndkey1
- $movkey -0x70($key),$rndkey0
-
- movups $inout0,($out) # store output
- movdqa $in0,$inout0
- movups $inout1,0x10($out)
- movdqa $in1,$inout1
- movups $inout2,0x20($out)
- movdqa $in2,$inout2
- movups $inout3,0x30($out)
- movdqa $in3,$inout3
- movups $inout4,0x40($out)
- movdqa $in4,$inout4
- movups $inout5,0x50($out)
- movdqa $rndkey1,$inout5
- movups $inout6,0x60($out)
- lea 0x70($out),$out
-
- sub \$0x80,$len
- ja .Lcbc_dec_loop8
-
- movaps $inout7,$inout0
- lea -0x70($key),$key
- add \$0x70,$len
- jle .Lcbc_dec_clear_tail_collected
- movups $inout7,($out)
- lea 0x10($out),$out
- cmp \$0x50,$len
- jbe .Lcbc_dec_tail
-
- movaps $in0,$inout0
- .Lcbc_dec_six_or_seven:
- cmp \$0x60,$len
- ja .Lcbc_dec_seven
-
- movaps $inout5,$inout6
- call _aesni_decrypt6
- pxor $iv,$inout0 # ^= IV
- movaps $inout6,$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- pxor $in1,$inout2
- movdqu $inout1,0x10($out)
- pxor $inout1,$inout1 # clear register bank
- pxor $in2,$inout3
- movdqu $inout2,0x20($out)
- pxor $inout2,$inout2
- pxor $in3,$inout4
- movdqu $inout3,0x30($out)
- pxor $inout3,$inout3
- pxor $in4,$inout5
- movdqu $inout4,0x40($out)
- pxor $inout4,$inout4
- lea 0x50($out),$out
- movdqa $inout5,$inout0
- pxor $inout5,$inout5
- jmp .Lcbc_dec_tail_collected
-
- .align 16
- .Lcbc_dec_seven:
- movups 0x60($inp),$inout6
- xorps $inout7,$inout7
- call _aesni_decrypt8
- movups 0x50($inp),$inout7
- pxor $iv,$inout0 # ^= IV
- movups 0x60($inp),$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- pxor $in1,$inout2
- movdqu $inout1,0x10($out)
- pxor $inout1,$inout1 # clear register bank
- pxor $in2,$inout3
- movdqu $inout2,0x20($out)
- pxor $inout2,$inout2
- pxor $in3,$inout4
- movdqu $inout3,0x30($out)
- pxor $inout3,$inout3
- pxor $in4,$inout5
- movdqu $inout4,0x40($out)
- pxor $inout4,$inout4
- pxor $inout7,$inout6
- movdqu $inout5,0x50($out)
- pxor $inout5,$inout5
- lea 0x60($out),$out
- movdqa $inout6,$inout0
- pxor $inout6,$inout6
- pxor $inout7,$inout7
- jmp .Lcbc_dec_tail_collected
-
- .align 16
- .Lcbc_dec_loop6:
- movups $inout5,($out)
- lea 0x10($out),$out
- movdqu 0x00($inp),$inout0 # load input
- movdqu 0x10($inp),$inout1
- movdqa $inout0,$in0
- movdqu 0x20($inp),$inout2
- movdqa $inout1,$in1
- movdqu 0x30($inp),$inout3
- movdqa $inout2,$in2
- movdqu 0x40($inp),$inout4
- movdqa $inout3,$in3
- movdqu 0x50($inp),$inout5
- movdqa $inout4,$in4
- .Lcbc_dec_loop6_enter:
- lea 0x60($inp),$inp
- movdqa $inout5,$inout6
-
- call _aesni_decrypt6
-
- pxor $iv,$inout0 # ^= IV
- movdqa $inout6,$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- pxor $in1,$inout2
- movdqu $inout1,0x10($out)
- pxor $in2,$inout3
- movdqu $inout2,0x20($out)
- pxor $in3,$inout4
- mov $key_,$key
- movdqu $inout3,0x30($out)
- pxor $in4,$inout5
- mov $rnds_,$rounds
- movdqu $inout4,0x40($out)
- lea 0x50($out),$out
- sub \$0x60,$len
- ja .Lcbc_dec_loop6
-
- movdqa $inout5,$inout0
- add \$0x50,$len
- jle .Lcbc_dec_clear_tail_collected
- movups $inout5,($out)
- lea 0x10($out),$out
-
- .Lcbc_dec_tail:
- movups ($inp),$inout0
- sub \$0x10,$len
- jbe .Lcbc_dec_one # $len is 1*16 or less
-
- movups 0x10($inp),$inout1
- movaps $inout0,$in0
- sub \$0x10,$len
- jbe .Lcbc_dec_two # $len is 2*16 or less
-
- movups 0x20($inp),$inout2
- movaps $inout1,$in1
- sub \$0x10,$len
- jbe .Lcbc_dec_three # $len is 3*16 or less
-
- movups 0x30($inp),$inout3
- movaps $inout2,$in2
- sub \$0x10,$len
- jbe .Lcbc_dec_four # $len is 4*16 or less
-
- movups 0x40($inp),$inout4 # $len is 5*16 or less
- movaps $inout3,$in3
- movaps $inout4,$in4
- xorps $inout5,$inout5
- call _aesni_decrypt6
- pxor $iv,$inout0
- movaps $in4,$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- pxor $in1,$inout2
- movdqu $inout1,0x10($out)
- pxor $inout1,$inout1 # clear register bank
- pxor $in2,$inout3
- movdqu $inout2,0x20($out)
- pxor $inout2,$inout2
- pxor $in3,$inout4
- movdqu $inout3,0x30($out)
- pxor $inout3,$inout3
- lea 0x40($out),$out
- movdqa $inout4,$inout0
- pxor $inout4,$inout4
- pxor $inout5,$inout5
- sub \$0x10,$len
- jmp .Lcbc_dec_tail_collected
-
- .align 16
- .Lcbc_dec_one:
- movaps $inout0,$in0
- ___
- &aesni_generate1("dec",$key,$rounds);
- $code.=<<___;
- xorps $iv,$inout0
- movaps $in0,$iv
- jmp .Lcbc_dec_tail_collected
- .align 16
- .Lcbc_dec_two:
- movaps $inout1,$in1
- call _aesni_decrypt2
- pxor $iv,$inout0
- movaps $in1,$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- movdqa $inout1,$inout0
- pxor $inout1,$inout1 # clear register bank
- lea 0x10($out),$out
- jmp .Lcbc_dec_tail_collected
- .align 16
- .Lcbc_dec_three:
- movaps $inout2,$in2
- call _aesni_decrypt3
- pxor $iv,$inout0
- movaps $in2,$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- pxor $in1,$inout2
- movdqu $inout1,0x10($out)
- pxor $inout1,$inout1 # clear register bank
- movdqa $inout2,$inout0
- pxor $inout2,$inout2
- lea 0x20($out),$out
- jmp .Lcbc_dec_tail_collected
- .align 16
- .Lcbc_dec_four:
- movaps $inout3,$in3
- call _aesni_decrypt4
- pxor $iv,$inout0
- movaps $in3,$iv
- pxor $in0,$inout1
- movdqu $inout0,($out)
- pxor $in1,$inout2
- movdqu $inout1,0x10($out)
- pxor $inout1,$inout1 # clear register bank
- pxor $in2,$inout3
- movdqu $inout2,0x20($out)
- pxor $inout2,$inout2
- movdqa $inout3,$inout0
- pxor $inout3,$inout3
- lea 0x30($out),$out
- jmp .Lcbc_dec_tail_collected
-
- .align 16
- .Lcbc_dec_clear_tail_collected:
- pxor $inout1,$inout1 # clear register bank
- pxor $inout2,$inout2
- pxor $inout3,$inout3
- ___
- $code.=<<___ if (!$win64);
- pxor $inout4,$inout4 # %xmm6..9
- pxor $inout5,$inout5
- pxor $inout6,$inout6
- pxor $inout7,$inout7
- ___
- $code.=<<___;
- .Lcbc_dec_tail_collected:
- movups $iv,($ivp)
- and \$15,$len
- jnz .Lcbc_dec_tail_partial
- movups $inout0,($out)
- pxor $inout0,$inout0
- jmp .Lcbc_dec_ret
- .align 16
- .Lcbc_dec_tail_partial:
- movaps $inout0,(%rsp)
- pxor $inout0,$inout0
- mov \$16,%rcx
- mov $out,%rdi
- sub $len,%rcx
- lea (%rsp),%rsi
- .long 0x9066A4F3 # rep movsb
- movdqa $inout0,(%rsp)
-
- .Lcbc_dec_ret:
- xorps $rndkey0,$rndkey0 # %xmm0
- pxor $rndkey1,$rndkey1
- ___
- $code.=<<___ if ($win64);
- movaps 0x10(%rsp),%xmm6
- movaps %xmm0,0x10(%rsp) # clear stack
- movaps 0x20(%rsp),%xmm7
- movaps %xmm0,0x20(%rsp)
- movaps 0x30(%rsp),%xmm8
- movaps %xmm0,0x30(%rsp)
- movaps 0x40(%rsp),%xmm9
- movaps %xmm0,0x40(%rsp)
- movaps 0x50(%rsp),%xmm10
- movaps %xmm0,0x50(%rsp)
- movaps 0x60(%rsp),%xmm11
- movaps %xmm0,0x60(%rsp)
- movaps 0x70(%rsp),%xmm12
- movaps %xmm0,0x70(%rsp)
- movaps 0x80(%rsp),%xmm13
- movaps %xmm0,0x80(%rsp)
- movaps 0x90(%rsp),%xmm14
- movaps %xmm0,0x90(%rsp)
- movaps 0xa0(%rsp),%xmm15
- movaps %xmm0,0xa0(%rsp)
- ___
- $code.=<<___;
- lea (%rbp),%rsp
- pop %rbp
- .Lcbc_ret:
- ret
- .size ${PREFIX}_cbc_encrypt,.-${PREFIX}_cbc_encrypt
- ___
- }
- # int ${PREFIX}_set_decrypt_key(const unsigned char *inp,
- # int bits, AES_KEY *key)
- #
- # input: $inp user-supplied key
- # $bits $inp length in bits
- # $key pointer to key schedule
- # output: %eax 0 denoting success, -1 or -2 - failure (see C)
- # *$key key schedule
- #
- { my ($inp,$bits,$key) = @_4args;
- $bits =~ s/%r/%e/;
-
- $code.=<<___;
- .globl ${PREFIX}_set_decrypt_key
- .type ${PREFIX}_set_decrypt_key,\@abi-omnipotent
- .align 16
- ${PREFIX}_set_decrypt_key:
- .byte 0x48,0x83,0xEC,0x08 # sub rsp,8
- call __aesni_set_encrypt_key
- shl \$4,$bits # rounds-1 after _aesni_set_encrypt_key
- test %eax,%eax
- jnz .Ldec_key_ret
- lea 16($key,$bits),$inp # points at the end of key schedule
-
- $movkey ($key),%xmm0 # just swap
- $movkey ($inp),%xmm1
- $movkey %xmm0,($inp)
- $movkey %xmm1,($key)
- lea 16($key),$key
- lea -16($inp),$inp
-
- .Ldec_key_inverse:
- $movkey ($key),%xmm0 # swap and inverse
- $movkey ($inp),%xmm1
- aesimc %xmm0,%xmm0
- aesimc %xmm1,%xmm1
- lea 16($key),$key
- lea -16($inp),$inp
- $movkey %xmm0,16($inp)
- $movkey %xmm1,-16($key)
- cmp $key,$inp
- ja .Ldec_key_inverse
-
- $movkey ($key),%xmm0 # inverse middle
- aesimc %xmm0,%xmm0
- pxor %xmm1,%xmm1
- $movkey %xmm0,($inp)
- pxor %xmm0,%xmm0
- .Ldec_key_ret:
- add \$8,%rsp
- ret
- .LSEH_end_set_decrypt_key:
- .size ${PREFIX}_set_decrypt_key,.-${PREFIX}_set_decrypt_key
- ___
-
- # This is based on submission by
- #
- # Huang Ying <ying.huang@intel.com>
- # Vinodh Gopal <vinodh.gopal@intel.com>
- # Kahraman Akdemir
- #
- # Agressively optimized in respect to aeskeygenassist's critical path
- # and is contained in %xmm0-5 to meet Win64 ABI requirement.
- #
- # int ${PREFIX}_set_encrypt_key(const unsigned char *inp,
- # int bits, AES_KEY * const key);
- #
- # input: $inp user-supplied key
- # $bits $inp length in bits
- # $key pointer to key schedule
- # output: %eax 0 denoting success, -1 or -2 - failure (see C)
- # $bits rounds-1 (used in aesni_set_decrypt_key)
- # *$key key schedule
- # $key pointer to key schedule (used in
- # aesni_set_decrypt_key)
- #
- # Subroutine is frame-less, which means that only volatile registers
- # are used. Note that it's declared "abi-omnipotent", which means that
- # amount of volatile registers is smaller on Windows.
- #
- $code.=<<___;
- .globl ${PREFIX}_set_encrypt_key
- .type ${PREFIX}_set_encrypt_key,\@abi-omnipotent
- .align 16
- ${PREFIX}_set_encrypt_key:
- __aesni_set_encrypt_key:
- .byte 0x48,0x83,0xEC,0x08 # sub rsp,8
- mov \$-1,%rax
- test $inp,$inp
- jz .Lenc_key_ret
- test $key,$key
- jz .Lenc_key_ret
-
- mov \$`1<<28|1<<11`,%r10d # AVX and XOP bits
- movups ($inp),%xmm0 # pull first 128 bits of *userKey
- xorps %xmm4,%xmm4 # low dword of xmm4 is assumed 0
- and OPENSSL_ia32cap_P+4(%rip),%r10d
- lea 16($key),%rax # %rax is used as modifiable copy of $key
- cmp \$256,$bits
- je .L14rounds
- cmp \$192,$bits
- je .L12rounds
- cmp \$128,$bits
- jne .Lbad_keybits
-
- .L10rounds:
- mov \$9,$bits # 10 rounds for 128-bit key
- cmp \$`1<<28`,%r10d # AVX, bit no XOP
- je .L10rounds_alt
-
- $movkey %xmm0,($key) # round 0
- aeskeygenassist \$0x1,%xmm0,%xmm1 # round 1
- call .Lkey_expansion_128_cold
- aeskeygenassist \$0x2,%xmm0,%xmm1 # round 2
- call .Lkey_expansion_128
- aeskeygenassist \$0x4,%xmm0,%xmm1 # round 3
- call .Lkey_expansion_128
- aeskeygenassist \$0x8,%xmm0,%xmm1 # round 4
- call .Lkey_expansion_128
- aeskeygenassist \$0x10,%xmm0,%xmm1 # round 5
- call .Lkey_expansion_128
- aeskeygenassist \$0x20,%xmm0,%xmm1 # round 6
- call .Lkey_expansion_128
- aeskeygenassist \$0x40,%xmm0,%xmm1 # round 7
- call .Lkey_expansion_128
- aeskeygenassist \$0x80,%xmm0,%xmm1 # round 8
- call .Lkey_expansion_128
- aeskeygenassist \$0x1b,%xmm0,%xmm1 # round 9
- call .Lkey_expansion_128
- aeskeygenassist \$0x36,%xmm0,%xmm1 # round 10
- call .Lkey_expansion_128
- $movkey %xmm0,(%rax)
- mov $bits,80(%rax) # 240(%rdx)
- xor %eax,%eax
- jmp .Lenc_key_ret
-
- .align 16
- .L10rounds_alt:
- movdqa .Lkey_rotate(%rip),%xmm5
- mov \$8,%r10d
- movdqa .Lkey_rcon1(%rip),%xmm4
- movdqa %xmm0,%xmm2
- movdqu %xmm0,($key)
- jmp .Loop_key128
-
- .align 16
- .Loop_key128:
- pshufb %xmm5,%xmm0
- aesenclast %xmm4,%xmm0
- pslld \$1,%xmm4
- lea 16(%rax),%rax
-
- movdqa %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm3,%xmm2
-
- pxor %xmm2,%xmm0
- movdqu %xmm0,-16(%rax)
- movdqa %xmm0,%xmm2
-
- dec %r10d
- jnz .Loop_key128
-
- movdqa .Lkey_rcon1b(%rip),%xmm4
-
- pshufb %xmm5,%xmm0
- aesenclast %xmm4,%xmm0
- pslld \$1,%xmm4
-
- movdqa %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm3,%xmm2
-
- pxor %xmm2,%xmm0
- movdqu %xmm0,(%rax)
-
- movdqa %xmm0,%xmm2
- pshufb %xmm5,%xmm0
- aesenclast %xmm4,%xmm0
-
- movdqa %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm2,%xmm3
- pslldq \$4,%xmm2
- pxor %xmm3,%xmm2
-
- pxor %xmm2,%xmm0
- movdqu %xmm0,16(%rax)
-
- mov $bits,96(%rax) # 240($key)
- xor %eax,%eax
- jmp .Lenc_key_ret
-
- .align 16
- .L12rounds:
- movq 16($inp),%xmm2 # remaining 1/3 of *userKey
- mov \$11,$bits # 12 rounds for 192
- cmp \$`1<<28`,%r10d # AVX, but no XOP
- je .L12rounds_alt
-
- $movkey %xmm0,($key) # round 0
- aeskeygenassist \$0x1,%xmm2,%xmm1 # round 1,2
- call .Lkey_expansion_192a_cold
- aeskeygenassist \$0x2,%xmm2,%xmm1 # round 2,3
- call .Lkey_expansion_192b
- aeskeygenassist \$0x4,%xmm2,%xmm1 # round 4,5
- call .Lkey_expansion_192a
- aeskeygenassist \$0x8,%xmm2,%xmm1 # round 5,6
- call .Lkey_expansion_192b
- aeskeygenassist \$0x10,%xmm2,%xmm1 # round 7,8
- call .Lkey_expansion_192a
- aeskeygenassist \$0x20,%xmm2,%xmm1 # round 8,9
- call .Lkey_expansion_192b
- aeskeygenassist \$0x40,%xmm2,%xmm1 # round 10,11
- call .Lkey_expansion_192a
- aeskeygenassist \$0x80,%xmm2,%xmm1 # round 11,12
- call .Lkey_expansion_192b
- $movkey %xmm0,(%rax)
- mov $bits,48(%rax) # 240(%rdx)
- xor %rax, %rax
- jmp .Lenc_key_ret
-
- .align 16
- .L12rounds_alt:
- movdqa .Lkey_rotate192(%rip),%xmm5
- movdqa .Lkey_rcon1(%rip),%xmm4
- mov \$8,%r10d
- movdqu %xmm0,($key)
- jmp .Loop_key192
-
- .align 16
- .Loop_key192:
- movq %xmm2,0(%rax)
- movdqa %xmm2,%xmm1
- pshufb %xmm5,%xmm2
- aesenclast %xmm4,%xmm2
- pslld \$1, %xmm4
- lea 24(%rax),%rax
-
- movdqa %xmm0,%xmm3
- pslldq \$4,%xmm0
- pxor %xmm0,%xmm3
- pslldq \$4,%xmm0
- pxor %xmm0,%xmm3
- pslldq \$4,%xmm0
- pxor %xmm3,%xmm0
-
- pshufd \$0xff,%xmm0,%xmm3
- pxor %xmm1,%xmm3
- pslldq \$4,%xmm1
- pxor %xmm1,%xmm3
-
- pxor %xmm2,%xmm0
- pxor %xmm3,%xmm2
- movdqu %xmm0,-16(%rax)
-
- dec %r10d
- jnz .Loop_key192
-
- mov $bits,32(%rax) # 240($key)
- xor %eax,%eax
- jmp .Lenc_key_ret
-
- .align 16
- .L14rounds:
- movups 16($inp),%xmm2 # remaning half of *userKey
- mov \$13,$bits # 14 rounds for 256
- lea 16(%rax),%rax
- cmp \$`1<<28`,%r10d # AVX, but no XOP
- je .L14rounds_alt
-
- $movkey %xmm0,($key) # round 0
- $movkey %xmm2,16($key) # round 1
- aeskeygenassist \$0x1,%xmm2,%xmm1 # round 2
- call .Lkey_expansion_256a_cold
- aeskeygenassist \$0x1,%xmm0,%xmm1 # round 3
- call .Lkey_expansion_256b
- aeskeygenassist \$0x2,%xmm2,%xmm1 # round 4
- call .Lkey_expansion_256a
- aeskeygenassist \$0x2,%xmm0,%xmm1 # round 5
- call .Lkey_expansion_256b
- aeskeygenassist \$0x4,%xmm2,%xmm1 # round 6
- call .Lkey_expansion_256a
- aeskeygenassist \$0x4,%xmm0,%xmm1 # round 7
- call .Lkey_expansion_256b
- aeskeygenassist \$0x8,%xmm2,%xmm1 # round 8
- call .Lkey_expansion_256a
- aeskeygenassist \$0x8,%xmm0,%xmm1 # round 9
- call .Lkey_expansion_256b
- aeskeygenassist \$0x10,%xmm2,%xmm1 # round 10
- call .Lkey_expansion_256a
- aeskeygenassist \$0x10,%xmm0,%xmm1 # round 11
- call .Lkey_expansion_256b
- aeskeygenassist \$0x20,%xmm2,%xmm1 # round 12
- call .Lkey_expansion_256a
- aeskeygenassist \$0x20,%xmm0,%xmm1 # round 13
- call .Lkey_expansion_256b
- aeskeygenassist \$0x40,%xmm2,%xmm1 # round 14
- call .Lkey_expansion_256a
- $movkey %xmm0,(%rax)
- mov $bits,16(%rax) # 240(%rdx)
- xor %rax,%rax
- jmp .Lenc_key_ret
-
- .align 16
- .L14rounds_alt:
- movdqa .Lkey_rotate(%rip),%xmm5
- movdqa .Lkey_rcon1(%rip),%xmm4
- mov \$7,%r10d
- movdqu %xmm0,0($key)
- movdqa %xmm2,%xmm1
- movdqu %xmm2,16($key)
- jmp .Loop_key256
-
- .align 16
- .Loop_key256:
- pshufb %xmm5,%xmm2
- aesenclast %xmm4,%xmm2
-
- movdqa %xmm0,%xmm3
- pslldq \$4,%xmm0
- pxor %xmm0,%xmm3
- pslldq \$4,%xmm0
- pxor %xmm0,%xmm3
- pslldq \$4,%xmm0
- pxor %xmm3,%xmm0
- pslld \$1,%xmm4
-
- pxor %xmm2,%xmm0
- movdqu %xmm0,(%rax)
-
- dec %r10d
- jz .Ldone_key256
-
- pshufd \$0xff,%xmm0,%xmm2
- pxor %xmm3,%xmm3
- aesenclast %xmm3,%xmm2
-
- movdqa %xmm1,%xmm3
- pslldq \$4,%xmm1
- pxor %xmm1,%xmm3
- pslldq \$4,%xmm1
- pxor %xmm1,%xmm3
- pslldq \$4,%xmm1
- pxor %xmm3,%xmm1
-
- pxor %xmm1,%xmm2
- movdqu %xmm2,16(%rax)
- lea 32(%rax),%rax
- movdqa %xmm2,%xmm1
-
- jmp .Loop_key256
-
- .Ldone_key256:
- mov $bits,16(%rax) # 240($key)
- xor %eax,%eax
- jmp .Lenc_key_ret
-
- .align 16
- .Lbad_keybits:
- mov \$-2,%rax
- .Lenc_key_ret:
- pxor %xmm0,%xmm0
- pxor %xmm1,%xmm1
- pxor %xmm2,%xmm2
- pxor %xmm3,%xmm3
- pxor %xmm4,%xmm4
- pxor %xmm5,%xmm5
- add \$8,%rsp
- ret
- .LSEH_end_set_encrypt_key:
-
- .align 16
- .Lkey_expansion_128:
- $movkey %xmm0,(%rax)
- lea 16(%rax),%rax
- .Lkey_expansion_128_cold:
- shufps \$0b00010000,%xmm0,%xmm4
- xorps %xmm4, %xmm0
- shufps \$0b10001100,%xmm0,%xmm4
- xorps %xmm4, %xmm0
- shufps \$0b11111111,%xmm1,%xmm1 # critical path
- xorps %xmm1,%xmm0
- ret
-
- .align 16
- .Lkey_expansion_192a:
- $movkey %xmm0,(%rax)
- lea 16(%rax),%rax
- .Lkey_expansion_192a_cold:
- movaps %xmm2, %xmm5
- .Lkey_expansion_192b_warm:
- shufps \$0b00010000,%xmm0,%xmm4
- movdqa %xmm2,%xmm3
- xorps %xmm4,%xmm0
- shufps \$0b10001100,%xmm0,%xmm4
- pslldq \$4,%xmm3
- xorps %xmm4,%xmm0
- pshufd \$0b01010101,%xmm1,%xmm1 # critical path
- pxor %xmm3,%xmm2
- pxor %xmm1,%xmm0
- pshufd \$0b11111111,%xmm0,%xmm3
- pxor %xmm3,%xmm2
- ret
-
- .align 16
- .Lkey_expansion_192b:
- movaps %xmm0,%xmm3
- shufps \$0b01000100,%xmm0,%xmm5
- $movkey %xmm5,(%rax)
- shufps \$0b01001110,%xmm2,%xmm3
- $movkey %xmm3,16(%rax)
- lea 32(%rax),%rax
- jmp .Lkey_expansion_192b_warm
-
- .align 16
- .Lkey_expansion_256a:
- $movkey %xmm2,(%rax)
- lea 16(%rax),%rax
- .Lkey_expansion_256a_cold:
- shufps \$0b00010000,%xmm0,%xmm4
- xorps %xmm4,%xmm0
- shufps \$0b10001100,%xmm0,%xmm4
- xorps %xmm4,%xmm0
- shufps \$0b11111111,%xmm1,%xmm1 # critical path
- xorps %xmm1,%xmm0
- ret
-
- .align 16
- .Lkey_expansion_256b:
- $movkey %xmm0,(%rax)
- lea 16(%rax),%rax
-
- shufps \$0b00010000,%xmm2,%xmm4
- xorps %xmm4,%xmm2
- shufps \$0b10001100,%xmm2,%xmm4
- xorps %xmm4,%xmm2
- shufps \$0b10101010,%xmm1,%xmm1 # critical path
- xorps %xmm1,%xmm2
- ret
- .size ${PREFIX}_set_encrypt_key,.-${PREFIX}_set_encrypt_key
- .size __aesni_set_encrypt_key,.-__aesni_set_encrypt_key
- ___
- }
-
- $code.=<<___;
- .align 64
- .Lbswap_mask:
- .byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
- .Lincrement32:
- .long 6,6,6,0
- .Lincrement64:
- .long 1,0,0,0
- .Lxts_magic:
- .long 0x87,0,1,0
- .Lincrement1:
- .byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1
- .Lkey_rotate:
- .long 0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d
- .Lkey_rotate192:
- .long 0x04070605,0x04070605,0x04070605,0x04070605
- .Lkey_rcon1:
- .long 1,1,1,1
- .Lkey_rcon1b:
- .long 0x1b,0x1b,0x1b,0x1b
-
- .asciz "AES for Intel AES-NI, CRYPTOGAMS by <appro\@openssl.org>"
- .align 64
- ___
-
- # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
- # CONTEXT *context,DISPATCHER_CONTEXT *disp)
- if ($win64) {
- $rec="%rcx";
- $frame="%rdx";
- $context="%r8";
- $disp="%r9";
-
- $code.=<<___;
- .extern __imp_RtlVirtualUnwind
- ___
- $code.=<<___ if ($PREFIX eq "aesni");
- .type ecb_ccm64_se_handler,\@abi-omnipotent
- .align 16
- ecb_ccm64_se_handler:
- push %rsi
- push %rdi
- push %rbx
- push %rbp
- push %r12
- push %r13
- push %r14
- push %r15
- pushfq
- sub \$64,%rsp
-
- mov 120($context),%rax # pull context->Rax
- mov 248($context),%rbx # pull context->Rip
-
- mov 8($disp),%rsi # disp->ImageBase
- mov 56($disp),%r11 # disp->HandlerData
-
- mov 0(%r11),%r10d # HandlerData[0]
- lea (%rsi,%r10),%r10 # prologue label
- cmp %r10,%rbx # context->Rip<prologue label
- jb .Lcommon_seh_tail
-
- mov 152($context),%rax # pull context->Rsp
-
- mov 4(%r11),%r10d # HandlerData[1]
- lea (%rsi,%r10),%r10 # epilogue label
- cmp %r10,%rbx # context->Rip>=epilogue label
- jae .Lcommon_seh_tail
-
- lea 0(%rax),%rsi # %xmm save area
- lea 512($context),%rdi # &context.Xmm6
- mov \$8,%ecx # 4*sizeof(%xmm0)/sizeof(%rax)
- .long 0xa548f3fc # cld; rep movsq
- lea 0x58(%rax),%rax # adjust stack pointer
-
- jmp .Lcommon_seh_tail
- .size ecb_ccm64_se_handler,.-ecb_ccm64_se_handler
-
- .type ctr_xts_se_handler,\@abi-omnipotent
- .align 16
- ctr_xts_se_handler:
- push %rsi
- push %rdi
- push %rbx
- push %rbp
- push %r12
- push %r13
- push %r14
- push %r15
- pushfq
- sub \$64,%rsp
-
- mov 120($context),%rax # pull context->Rax
- mov 248($context),%rbx # pull context->Rip
-
- mov 8($disp),%rsi # disp->ImageBase
- mov 56($disp),%r11 # disp->HandlerData
-
- mov 0(%r11),%r10d # HandlerData[0]
- lea (%rsi,%r10),%r10 # prologue lable
- cmp %r10,%rbx # context->Rip<prologue label
- jb .Lcommon_seh_tail
-
- mov 152($context),%rax # pull context->Rsp
-
- mov 4(%r11),%r10d # HandlerData[1]
- lea (%rsi,%r10),%r10 # epilogue label
- cmp %r10,%rbx # context->Rip>=epilogue label
- jae .Lcommon_seh_tail
-
- mov 160($context),%rax # pull context->Rbp
- lea -0xa0(%rax),%rsi # %xmm save area
- lea 512($context),%rdi # & context.Xmm6
- mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
- .long 0xa548f3fc # cld; rep movsq
-
- jmp .Lcommon_rbp_tail
- .size ctr_xts_se_handler,.-ctr_xts_se_handler
- ___
- $code.=<<___;
- .type cbc_se_handler,\@abi-omnipotent
- .align 16
- cbc_se_handler:
- push %rsi
- push %rdi
- push %rbx
- push %rbp
- push %r12
- push %r13
- push %r14
- push %r15
- pushfq
- sub \$64,%rsp
-
- mov 152($context),%rax # pull context->Rsp
- mov 248($context),%rbx # pull context->Rip
-
- lea .Lcbc_decrypt_bulk(%rip),%r10
- cmp %r10,%rbx # context->Rip<"prologue" label
- jb .Lcommon_seh_tail
-
- lea .Lcbc_decrypt_body(%rip),%r10
- cmp %r10,%rbx # context->Rip<cbc_decrypt_body
- jb .Lrestore_cbc_rax
-
- lea .Lcbc_ret(%rip),%r10
- cmp %r10,%rbx # context->Rip>="epilogue" label
- jae .Lcommon_seh_tail
-
- lea 16(%rax),%rsi # %xmm save area
- lea 512($context),%rdi # &context.Xmm6
- mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
- .long 0xa548f3fc # cld; rep movsq
-
- .Lcommon_rbp_tail:
- mov 160($context),%rax # pull context->Rbp
- mov (%rax),%rbp # restore saved %rbp
- lea 8(%rax),%rax # adjust stack pointer
- mov %rbp,160($context) # restore context->Rbp
- jmp .Lcommon_seh_tail
-
- .Lrestore_cbc_rax:
- mov 120($context),%rax
-
- .Lcommon_seh_tail:
- mov 8(%rax),%rdi
- mov 16(%rax),%rsi
- mov %rax,152($context) # restore context->Rsp
- mov %rsi,168($context) # restore context->Rsi
- mov %rdi,176($context) # restore context->Rdi
-
- mov 40($disp),%rdi # disp->ContextRecord
- mov $context,%rsi # context
- mov \$154,%ecx # sizeof(CONTEXT)
- .long 0xa548f3fc # cld; rep movsq
-
- mov $disp,%rsi
- xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
- mov 8(%rsi),%rdx # arg2, disp->ImageBase
- mov 0(%rsi),%r8 # arg3, disp->ControlPc
- mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
- mov 40(%rsi),%r10 # disp->ContextRecord
- lea 56(%rsi),%r11 # &disp->HandlerData
- lea 24(%rsi),%r12 # &disp->EstablisherFrame
- mov %r10,32(%rsp) # arg5
- mov %r11,40(%rsp) # arg6
- mov %r12,48(%rsp) # arg7
- mov %rcx,56(%rsp) # arg8, (NULL)
- call *__imp_RtlVirtualUnwind(%rip)
-
- mov \$1,%eax # ExceptionContinueSearch
- add \$64,%rsp
- popfq
- pop %r15
- pop %r14
- pop %r13
- pop %r12
- pop %rbp
- pop %rbx
- pop %rdi
- pop %rsi
- ret
- .size cbc_se_handler,.-cbc_se_handler
-
- .section .pdata
- .align 4
- ___
- $code.=<<___ if ($PREFIX eq "aesni");
- .rva .LSEH_begin_aesni_ecb_encrypt
- .rva .LSEH_end_aesni_ecb_encrypt
- .rva .LSEH_info_ecb
-
- .rva .LSEH_begin_aesni_ccm64_encrypt_blocks
- .rva .LSEH_end_aesni_ccm64_encrypt_blocks
- .rva .LSEH_info_ccm64_enc
-
- .rva .LSEH_begin_aesni_ccm64_decrypt_blocks
- .rva .LSEH_end_aesni_ccm64_decrypt_blocks
- .rva .LSEH_info_ccm64_dec
-
- .rva .LSEH_begin_aesni_ctr32_encrypt_blocks
- .rva .LSEH_end_aesni_ctr32_encrypt_blocks
- .rva .LSEH_info_ctr32
-
- .rva .LSEH_begin_aesni_xts_encrypt
- .rva .LSEH_end_aesni_xts_encrypt
- .rva .LSEH_info_xts_enc
-
- .rva .LSEH_begin_aesni_xts_decrypt
- .rva .LSEH_end_aesni_xts_decrypt
- .rva .LSEH_info_xts_dec
- ___
- $code.=<<___;
- .rva .LSEH_begin_${PREFIX}_cbc_encrypt
- .rva .LSEH_end_${PREFIX}_cbc_encrypt
- .rva .LSEH_info_cbc
-
- .rva ${PREFIX}_set_decrypt_key
- .rva .LSEH_end_set_decrypt_key
- .rva .LSEH_info_key
-
- .rva ${PREFIX}_set_encrypt_key
- .rva .LSEH_end_set_encrypt_key
- .rva .LSEH_info_key
- .section .xdata
- .align 8
- ___
- $code.=<<___ if ($PREFIX eq "aesni");
- .LSEH_info_ecb:
- .byte 9,0,0,0
- .rva ecb_ccm64_se_handler
- .rva .Lecb_enc_body,.Lecb_enc_ret # HandlerData[]
- .LSEH_info_ccm64_enc:
- .byte 9,0,0,0
- .rva ecb_ccm64_se_handler
- .rva .Lccm64_enc_body,.Lccm64_enc_ret # HandlerData[]
- .LSEH_info_ccm64_dec:
- .byte 9,0,0,0
- .rva ecb_ccm64_se_handler
- .rva .Lccm64_dec_body,.Lccm64_dec_ret # HandlerData[]
- .LSEH_info_ctr32:
- .byte 9,0,0,0
- .rva ctr_xts_se_handler
- .rva .Lctr32_body,.Lctr32_epilogue # HandlerData[]
- .LSEH_info_xts_enc:
- .byte 9,0,0,0
- .rva ctr_xts_se_handler
- .rva .Lxts_enc_body,.Lxts_enc_epilogue # HandlerData[]
- .LSEH_info_xts_dec:
- .byte 9,0,0,0
- .rva ctr_xts_se_handler
- .rva .Lxts_dec_body,.Lxts_dec_epilogue # HandlerData[]
- ___
- $code.=<<___;
- .LSEH_info_cbc:
- .byte 9,0,0,0
- .rva cbc_se_handler
- .LSEH_info_key:
- .byte 0x01,0x04,0x01,0x00
- .byte 0x04,0x02,0x00,0x00 # sub rsp,8
- ___
- }
-
- sub rex {
- local *opcode=shift;
- my ($dst,$src)=@_;
- my $rex=0;
-
- $rex|=0x04 if($dst>=8);
- $rex|=0x01 if($src>=8);
- push @opcode,$rex|0x40 if($rex);
- }
-
- sub aesni {
- my $line=shift;
- my @opcode=(0x66);
-
- if ($line=~/(aeskeygenassist)\s+\$([x0-9a-f]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
- rex(\@opcode,$4,$3);
- push @opcode,0x0f,0x3a,0xdf;
- push @opcode,0xc0|($3&7)|(($4&7)<<3); # ModR/M
- my $c=$2;
- push @opcode,$c=~/^0/?oct($c):$c;
- return ".byte\t".join(',',@opcode);
- }
- elsif ($line=~/(aes[a-z]+)\s+%xmm([0-9]+),\s*%xmm([0-9]+)/) {
- my %opcodelet = (
- "aesimc" => 0xdb,
- "aesenc" => 0xdc, "aesenclast" => 0xdd,
- "aesdec" => 0xde, "aesdeclast" => 0xdf
- );
- return undef if (!defined($opcodelet{$1}));
- rex(\@opcode,$3,$2);
- push @opcode,0x0f,0x38,$opcodelet{$1};
- push @opcode,0xc0|($2&7)|(($3&7)<<3); # ModR/M
- return ".byte\t".join(',',@opcode);
- }
- elsif ($line=~/(aes[a-z]+)\s+([0x1-9a-fA-F]*)\(%rsp\),\s*%xmm([0-9]+)/) {
- my %opcodelet = (
- "aesenc" => 0xdc, "aesenclast" => 0xdd,
- "aesdec" => 0xde, "aesdeclast" => 0xdf
- );
- return undef if (!defined($opcodelet{$1}));
- my $off = $2;
- push @opcode,0x44 if ($3>=8);
- push @opcode,0x0f,0x38,$opcodelet{$1};
- push @opcode,0x44|(($3&7)<<3),0x24; # ModR/M
- push @opcode,($off=~/^0/?oct($off):$off)&0xff;
- return ".byte\t".join(',',@opcode);
- }
- return $line;
- }
-
- sub movbe {
- ".byte 0x0f,0x38,0xf1,0x44,0x24,".shift;
- }
-
- $code =~ s/\`([^\`]*)\`/eval($1)/gem;
- $code =~ s/\b(aes.*%xmm[0-9]+).*$/aesni($1)/gem;
- #$code =~ s/\bmovbe\s+%eax/bswap %eax; mov %eax/gm; # debugging artefact
- $code =~ s/\bmovbe\s+%eax,\s*([0-9]+)\(%rsp\)/movbe($1)/gem;
-
- print $code;
-
- close STDOUT;
|