blob: c9270dfddc182d59eaa636f8be1acaf86e39a02c [file] [log] [blame]
#!/usr/bin/env perl
#
# ====================================================================
# Written by Andy Polyakov <appro@fy.chalmers.se> 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 0.93
# CTR 1.14 0.91 n/a
#
# 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 1.33 cycles processing
# one byte out of 8KB with 128-bit key, Sandy Bridge - 0.97. Just like
# in CTR mode AES instruction interleave factor was chosen to be 6x.
$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";
$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.=<<___;
movups $inout0,($out) # output
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.=<<___;
movups $inout0,($out) # output
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 makes no sense to implement 2x subroutine.
# aes[enc|dec] latency in next processor generation is 8, but the
# instructions can be scheduled every cycle. Optimal interleave for
# new processor is therefore 8x...
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),$rndkey0
shr \$1,$rounds
$movkey 16($key),$rndkey1
lea 32($key),$key
xorps $rndkey0,$inout0
xorps $rndkey0,$inout1
xorps $rndkey0,$inout2
$movkey ($key),$rndkey0
.L${dir}_loop3:
aes${dir} $rndkey1,$inout0
aes${dir} $rndkey1,$inout1
dec $rounds
aes${dir} $rndkey1,$inout2
$movkey 16($key),$rndkey1
aes${dir} $rndkey0,$inout0
aes${dir} $rndkey0,$inout1
lea 32($key),$key
aes${dir} $rndkey0,$inout2
$movkey ($key),$rndkey0
jnz .L${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),$rndkey0
shr \$1,$rounds
$movkey 16($key),$rndkey1
lea 32($key),$key
xorps $rndkey0,$inout0
xorps $rndkey0,$inout1
xorps $rndkey0,$inout2
xorps $rndkey0,$inout3
$movkey ($key),$rndkey0
.L${dir}_loop4:
aes${dir} $rndkey1,$inout0
aes${dir} $rndkey1,$inout1
dec $rounds
aes${dir} $rndkey1,$inout2
aes${dir} $rndkey1,$inout3
$movkey 16($key),$rndkey1
aes${dir} $rndkey0,$inout0
aes${dir} $rndkey0,$inout1
lea 32($key),$key
aes${dir} $rndkey0,$inout2
aes${dir} $rndkey0,$inout3
$movkey ($key),$rndkey0
jnz .L${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),$rndkey0
shr \$1,$rounds
$movkey 16($key),$rndkey1
lea 32($key),$key
xorps $rndkey0,$inout0
pxor $rndkey0,$inout1
aes${dir} $rndkey1,$inout0
pxor $rndkey0,$inout2
aes${dir} $rndkey1,$inout1
pxor $rndkey0,$inout3
aes${dir} $rndkey1,$inout2
pxor $rndkey0,$inout4
aes${dir} $rndkey1,$inout3
pxor $rndkey0,$inout5
dec $rounds
aes${dir} $rndkey1,$inout4
$movkey ($key),$rndkey0
aes${dir} $rndkey1,$inout5
jmp .L${dir}_loop6_enter
.align 16
.L${dir}_loop6:
aes${dir} $rndkey1,$inout0
aes${dir} $rndkey1,$inout1
dec $rounds
aes${dir} $rndkey1,$inout2
aes${dir} $rndkey1,$inout3
aes${dir} $rndkey1,$inout4
aes${dir} $rndkey1,$inout5
.L${dir}_loop6_enter: # happens to be 16-byte aligned
$movkey 16($key),$rndkey1
aes${dir} $rndkey0,$inout0
aes${dir} $rndkey0,$inout1
lea 32($key),$key
aes${dir} $rndkey0,$inout2
aes${dir} $rndkey0,$inout3
aes${dir} $rndkey0,$inout4
aes${dir} $rndkey0,$inout5
$movkey ($key),$rndkey0
jnz .L${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),$rndkey0
shr \$1,$rounds
$movkey 16($key),$rndkey1
lea 32($key),$key
xorps $rndkey0,$inout0
xorps $rndkey0,$inout1
aes${dir} $rndkey1,$inout0
pxor $rndkey0,$inout2
aes${dir} $rndkey1,$inout1
pxor $rndkey0,$inout3
aes${dir} $rndkey1,$inout2
pxor $rndkey0,$inout4
aes${dir} $rndkey1,$inout3
pxor $rndkey0,$inout5
dec $rounds
aes${dir} $rndkey1,$inout4
pxor $rndkey0,$inout6
aes${dir} $rndkey1,$inout5
pxor $rndkey0,$inout7
$movkey ($key),$rndkey0
aes${dir} $rndkey1,$inout6
aes${dir} $rndkey1,$inout7
$movkey 16($key),$rndkey1
jmp .L${dir}_loop8_enter
.align 16
.L${dir}_loop8:
aes${dir} $rndkey1,$inout0
aes${dir} $rndkey1,$inout1
dec $rounds
aes${dir} $rndkey1,$inout2
aes${dir} $rndkey1,$inout3
aes${dir} $rndkey1,$inout4
aes${dir} $rndkey1,$inout5
aes${dir} $rndkey1,$inout6
aes${dir} $rndkey1,$inout7
$movkey 16($key),$rndkey1
.L${dir}_loop8_enter: # happens to be 16-byte aligned
aes${dir} $rndkey0,$inout0
aes${dir} $rndkey0,$inout1
lea 32($key),$key
aes${dir} $rndkey0,$inout2
aes${dir} $rndkey0,$inout3
aes${dir} $rndkey0,$inout4
aes${dir} $rndkey0,$inout5
aes${dir} $rndkey0,$inout6
aes${dir} $rndkey0,$inout7
$movkey ($key),$rndkey0
jnz .L${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_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)
movaps %xmm7,0x10(%rsp)
movaps %xmm8,0x20(%rsp)
movaps %xmm9,0x30(%rsp)
.Lecb_enc_body:
___
$code.=<<___;
and \$-16,$len
jz .Lecb_ret
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
jb .Lecb_enc_tail
movdqu ($inp),$inout0
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
sub \$0x80,$len
jmp .Lecb_enc_loop8_enter
.align 16
.Lecb_enc_loop8:
movups $inout0,($out)
mov $key_,$key # restore $key
movdqu ($inp),$inout0
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
movdqu 0x70($inp),$inout7
lea 0x80($inp),$inp
.Lecb_enc_loop8_enter:
call _aesni_encrypt8
sub \$0x80,$len
jnc .Lecb_enc_loop8
movups $inout0,($out)
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
add \$0x80,$len
jz .Lecb_ret
.Lecb_enc_tail:
movups ($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
call _aesni_encrypt8
movups $inout0,($out)
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)
jmp .Lecb_ret
.align 16
.Lecb_enc_two:
xorps $inout2,$inout2
call _aesni_encrypt3
movups $inout0,($out)
movups $inout1,0x10($out)
jmp .Lecb_ret
.align 16
.Lecb_enc_three:
call _aesni_encrypt3
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
jmp .Lecb_ret
.align 16
.Lecb_enc_four:
call _aesni_encrypt4
movups $inout0,($out)
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)
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)
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,$len
jb .Lecb_dec_tail
movdqu ($inp),$inout0
movdqu 0x10($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),$inp
sub \$0x80,$len
jmp .Lecb_dec_loop8_enter
.align 16
.Lecb_dec_loop8:
movups $inout0,($out)
mov $key_,$key # restore $key
movdqu ($inp),$inout0
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
movdqu 0x70($inp),$inout7
lea 0x80($inp),$inp
.Lecb_dec_loop8_enter:
call _aesni_decrypt8
$movkey ($key_),$rndkey0
sub \$0x80,$len
jnc .Lecb_dec_loop8
movups $inout0,($out)
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
add \$0x80,$len
jz .Lecb_ret
.Lecb_dec_tail:
movups ($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
call _aesni_decrypt8
movups $inout0,($out)
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_dec_one:
___
&aesni_generate1("dec",$key,$rounds);
$code.=<<___;
movups $inout0,($out)
jmp .Lecb_ret
.align 16
.Lecb_dec_two:
xorps $inout2,$inout2
call _aesni_decrypt3
movups $inout0,($out)
movups $inout1,0x10($out)
jmp .Lecb_ret
.align 16
.Lecb_dec_three:
call _aesni_decrypt3
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
jmp .Lecb_ret
.align 16
.Lecb_dec_four:
call _aesni_decrypt4
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
jmp .Lecb_ret
.align 16
.Lecb_dec_five:
xorps $inout5,$inout5
call _aesni_decrypt6
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
movups $inout4,0x40($out)
jmp .Lecb_ret
.align 16
.Lecb_dec_six:
call _aesni_decrypt6
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
movups $inout4,0x40($out)
movups $inout5,0x50($out)
.Lecb_ret:
___
$code.=<<___ if ($win64);
movaps (%rsp),%xmm6
movaps 0x10(%rsp),%xmm7
movaps 0x20(%rsp),%xmm8
movaps 0x30(%rsp),%xmm9
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="%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)
movaps %xmm7,0x10(%rsp)
movaps %xmm8,0x20(%rsp)
movaps %xmm9,0x30(%rsp)
.Lccm64_enc_body:
___
$code.=<<___;
mov 240($key),$rounds # key->rounds
movdqu ($ivp),$iv
movdqa .Lincrement64(%rip),$increment
movdqa .Lbswap_mask(%rip),$bswap_mask
shr \$1,$rounds
lea 0($key),$key_
movdqu ($cmac),$inout1
movdqa $iv,$inout0
mov $rounds,$rnds_
pshufb $bswap_mask,$iv
jmp .Lccm64_enc_outer
.align 16
.Lccm64_enc_outer:
$movkey ($key_),$rndkey0
mov $rnds_,$rounds
movups ($inp),$in0 # load inp
xorps $rndkey0,$inout0 # counter
$movkey 16($key_),$rndkey1
xorps $in0,$rndkey0
lea 32($key_),$key
xorps $rndkey0,$inout1 # cmac^=inp
$movkey ($key),$rndkey0
.Lccm64_enc2_loop:
aesenc $rndkey1,$inout0
dec $rounds
aesenc $rndkey1,$inout1
$movkey 16($key),$rndkey1
aesenc $rndkey0,$inout0
lea 32($key),$key
aesenc $rndkey0,$inout1
$movkey 0($key),$rndkey0
jnz .Lccm64_enc2_loop
aesenc $rndkey1,$inout0
aesenc $rndkey1,$inout1
paddq $increment,$iv
aesenclast $rndkey0,$inout0
aesenclast $rndkey0,$inout1
dec $len
lea 16($inp),$inp
xorps $inout0,$in0 # inp ^= E(iv)
movdqa $iv,$inout0
movups $in0,($out) # save output
lea 16($out),$out
pshufb $bswap_mask,$inout0
jnz .Lccm64_enc_outer
movups $inout1,($cmac)
___
$code.=<<___ if ($win64);
movaps (%rsp),%xmm6
movaps 0x10(%rsp),%xmm7
movaps 0x20(%rsp),%xmm8
movaps 0x30(%rsp),%xmm9
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)
movaps %xmm7,0x10(%rsp)
movaps %xmm8,0x20(%rsp)
movaps %xmm9,0x30(%rsp)
.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);
$code.=<<___;
movups ($inp),$in0 # load inp
paddq $increment,$iv
lea 16($inp),$inp
jmp .Lccm64_dec_outer
.align 16
.Lccm64_dec_outer:
xorps $inout0,$in0 # inp ^= E(iv)
movdqa $iv,$inout0
mov $rnds_,$rounds
movups $in0,($out) # save output
lea 16($out),$out
pshufb $bswap_mask,$inout0
sub \$1,$len
jz .Lccm64_dec_break
$movkey ($key_),$rndkey0
shr \$1,$rounds
$movkey 16($key_),$rndkey1
xorps $rndkey0,$in0
lea 32($key_),$key
xorps $rndkey0,$inout0
xorps $in0,$inout1 # cmac^=out
$movkey ($key),$rndkey0
.Lccm64_dec2_loop:
aesenc $rndkey1,$inout0
dec $rounds
aesenc $rndkey1,$inout1
$movkey 16($key),$rndkey1
aesenc $rndkey0,$inout0
lea 32($key),$key
aesenc $rndkey0,$inout1
$movkey 0($key),$rndkey0
jnz .Lccm64_dec2_loop
movups ($inp),$in0 # load inp
paddq $increment,$iv
aesenc $rndkey1,$inout0
aesenc $rndkey1,$inout1
lea 16($inp),$inp
aesenclast $rndkey0,$inout0
aesenclast $rndkey0,$inout1
jmp .Lccm64_dec_outer
.align 16
.Lccm64_dec_break:
#xorps $in0,$inout1 # cmac^=out
___
&aesni_generate1("enc",$key_,$rounds,$inout1,$in0);
$code.=<<___;
movups $inout1,($cmac)
___
$code.=<<___ if ($win64);
movaps (%rsp),%xmm6
movaps 0x10(%rsp),%xmm7
movaps 0x20(%rsp),%xmm8
movaps 0x30(%rsp),%xmm9
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 engine/eng_aesni.c for details)
#
{
my $reserved = $win64?0:-0x28;
my ($in0,$in1,$in2,$in3)=map("%xmm$_",(8..11));
my ($iv0,$iv1,$ivec)=("%xmm12","%xmm13","%xmm14");
my $bswap_mask="%xmm15";
$code.=<<___;
.globl aesni_ctr32_encrypt_blocks
.type aesni_ctr32_encrypt_blocks,\@function,5
.align 16
aesni_ctr32_encrypt_blocks:
___
$code.=<<___ if ($win64);
lea -0xc8(%rsp),%rsp
movaps %xmm6,0x20(%rsp)
movaps %xmm7,0x30(%rsp)
movaps %xmm8,0x40(%rsp)
movaps %xmm9,0x50(%rsp)
movaps %xmm10,0x60(%rsp)
movaps %xmm11,0x70(%rsp)
movaps %xmm12,0x80(%rsp)
movaps %xmm13,0x90(%rsp)
movaps %xmm14,0xa0(%rsp)
movaps %xmm15,0xb0(%rsp)
.Lctr32_body:
___
$code.=<<___;
cmp \$1,$len
je .Lctr32_one_shortcut
movdqu ($ivp),$ivec
movdqa .Lbswap_mask(%rip),$bswap_mask
xor $rounds,$rounds
pextrd \$3,$ivec,$rnds_ # pull 32-bit counter
pinsrd \$3,$rounds,$ivec # wipe 32-bit counter
mov 240($key),$rounds # key->rounds
bswap $rnds_
pxor $iv0,$iv0 # vector of 3 32-bit counters
pxor $iv1,$iv1 # vector of 3 32-bit counters
pinsrd \$0,$rnds_,$iv0
lea 3($rnds_),$key_
pinsrd \$0,$key_,$iv1
inc $rnds_
pinsrd \$1,$rnds_,$iv0
inc $key_
pinsrd \$1,$key_,$iv1
inc $rnds_
pinsrd \$2,$rnds_,$iv0
inc $key_
pinsrd \$2,$key_,$iv1
movdqa $iv0,$reserved(%rsp)
pshufb $bswap_mask,$iv0
movdqa $iv1,`$reserved+0x10`(%rsp)
pshufb $bswap_mask,$iv1
pshufd \$`3<<6`,$iv0,$inout0 # place counter to upper dword
pshufd \$`2<<6`,$iv0,$inout1
pshufd \$`1<<6`,$iv0,$inout2
cmp \$6,$len
jb .Lctr32_tail
shr \$1,$rounds
mov $key,$key_ # backup $key
mov $rounds,$rnds_ # backup $rounds
sub \$6,$len
jmp .Lctr32_loop6
.align 16
.Lctr32_loop6:
pshufd \$`3<<6`,$iv1,$inout3
por $ivec,$inout0 # merge counter-less ivec
$movkey ($key_),$rndkey0
pshufd \$`2<<6`,$iv1,$inout4
por $ivec,$inout1
$movkey 16($key_),$rndkey1
pshufd \$`1<<6`,$iv1,$inout5
por $ivec,$inout2
por $ivec,$inout3
xorps $rndkey0,$inout0
por $ivec,$inout4
por $ivec,$inout5
# inline _aesni_encrypt6 and interleave last rounds
# with own code...
pxor $rndkey0,$inout1
aesenc $rndkey1,$inout0
lea 32($key_),$key
pxor $rndkey0,$inout2
aesenc $rndkey1,$inout1
movdqa .Lincrement32(%rip),$iv1
pxor $rndkey0,$inout3
aesenc $rndkey1,$inout2
movdqa $reserved(%rsp),$iv0
pxor $rndkey0,$inout4
aesenc $rndkey1,$inout3
pxor $rndkey0,$inout5
$movkey ($key),$rndkey0
dec $rounds
aesenc $rndkey1,$inout4
aesenc $rndkey1,$inout5
jmp .Lctr32_enc_loop6_enter
.align 16
.Lctr32_enc_loop6:
aesenc $rndkey1,$inout0
aesenc $rndkey1,$inout1
dec $rounds
aesenc $rndkey1,$inout2
aesenc $rndkey1,$inout3
aesenc $rndkey1,$inout4
aesenc $rndkey1,$inout5
.Lctr32_enc_loop6_enter:
$movkey 16($key),$rndkey1
aesenc $rndkey0,$inout0
aesenc $rndkey0,$inout1
lea 32($key),$key
aesenc $rndkey0,$inout2
aesenc $rndkey0,$inout3
aesenc $rndkey0,$inout4
aesenc $rndkey0,$inout5
$movkey ($key),$rndkey0
jnz .Lctr32_enc_loop6
aesenc $rndkey1,$inout0
paddd $iv1,$iv0 # increment counter vector
aesenc $rndkey1,$inout1
paddd `$reserved+0x10`(%rsp),$iv1
aesenc $rndkey1,$inout2
movdqa $iv0,$reserved(%rsp) # save counter vector
aesenc $rndkey1,$inout3
movdqa $iv1,`$reserved+0x10`(%rsp)
aesenc $rndkey1,$inout4
pshufb $bswap_mask,$iv0 # byte swap
aesenc $rndkey1,$inout5
pshufb $bswap_mask,$iv1
aesenclast $rndkey0,$inout0
movups ($inp),$in0 # load input
aesenclast $rndkey0,$inout1
movups 0x10($inp),$in1
aesenclast $rndkey0,$inout2
movups 0x20($inp),$in2
aesenclast $rndkey0,$inout3
movups 0x30($inp),$in3
aesenclast $rndkey0,$inout4
movups 0x40($inp),$rndkey1
aesenclast $rndkey0,$inout5
movups 0x50($inp),$rndkey0
lea 0x60($inp),$inp
xorps $inout0,$in0 # xor
pshufd \$`3<<6`,$iv0,$inout0
xorps $inout1,$in1
pshufd \$`2<<6`,$iv0,$inout1
movups $in0,($out) # store output
xorps $inout2,$in2
pshufd \$`1<<6`,$iv0,$inout2
movups $in1,0x10($out)
xorps $inout3,$in3
movups $in2,0x20($out)
xorps $inout4,$rndkey1
movups $in3,0x30($out)
xorps $inout5,$rndkey0
movups $rndkey1,0x40($out)
movups $rndkey0,0x50($out)
lea 0x60($out),$out
mov $rnds_,$rounds
sub \$6,$len
jnc .Lctr32_loop6
add \$6,$len
jz .Lctr32_done
mov $key_,$key # restore $key
lea 1($rounds,$rounds),$rounds # restore original value
.Lctr32_tail:
por $ivec,$inout0
movups ($inp),$in0
cmp \$2,$len
jb .Lctr32_one
por $ivec,$inout1
movups 0x10($inp),$in1
je .Lctr32_two
pshufd \$`3<<6`,$iv1,$inout3
por $ivec,$inout2
movups 0x20($inp),$in2
cmp \$4,$len
jb .Lctr32_three
pshufd \$`2<<6`,$iv1,$inout4
por $ivec,$inout3
movups 0x30($inp),$in3
je .Lctr32_four
por $ivec,$inout4
xorps $inout5,$inout5
call _aesni_encrypt6
movups 0x40($inp),$rndkey1
xorps $inout0,$in0
xorps $inout1,$in1
movups $in0,($out)
xorps $inout2,$in2
movups $in1,0x10($out)
xorps $inout3,$in3
movups $in2,0x20($out)
xorps $inout4,$rndkey1
movups $in3,0x30($out)
movups $rndkey1,0x40($out)
jmp .Lctr32_done
.align 16
.Lctr32_one_shortcut:
movups ($ivp),$inout0
movups ($inp),$in0
mov 240($key),$rounds # key->rounds
.Lctr32_one:
___
&aesni_generate1("enc",$key,$rounds);
$code.=<<___;
xorps $inout0,$in0
movups $in0,($out)
jmp .Lctr32_done
.align 16
.Lctr32_two:
xorps $inout2,$inout2
call _aesni_encrypt3
xorps $inout0,$in0
xorps $inout1,$in1
movups $in0,($out)
movups $in1,0x10($out)
jmp .Lctr32_done
.align 16
.Lctr32_three:
call _aesni_encrypt3
xorps $inout0,$in0
xorps $inout1,$in1
movups $in0,($out)
xorps $inout2,$in2
movups $in1,0x10($out)
movups $in2,0x20($out)
jmp .Lctr32_done
.align 16
.Lctr32_four:
call _aesni_encrypt4
xorps $inout0,$in0
xorps $inout1,$in1
movups $in0,($out)
xorps $inout2,$in2
movups $in1,0x10($out)
xorps $inout3,$in3
movups $in2,0x20($out)
movups $in3,0x30($out)
.Lctr32_done:
___
$code.=<<___ if ($win64);
movaps 0x20(%rsp),%xmm6
movaps 0x30(%rsp),%xmm7
movaps 0x40(%rsp),%xmm8
movaps 0x50(%rsp),%xmm9
movaps 0x60(%rsp),%xmm10
movaps 0x70(%rsp),%xmm11
movaps 0x80(%rsp),%xmm12
movaps 0x90(%rsp),%xmm13
movaps 0xa0(%rsp),%xmm14
movaps 0xb0(%rsp),%xmm15
lea 0xc8(%rsp),%rsp
.Lctr32_ret:
___
$code.=<<___;
ret
.size aesni_ctr32_encrypt_blocks,.-aesni_ctr32_encrypt_blocks
___
}
######################################################################
# void aesni_xts_[en|de]crypt(const char *inp,char *out,size_t len,
# const AES_KEY *key1, const AES_KEY *key2
# const unsigned char iv[16]);
#
{
my @tweak=map("%xmm$_",(10..15));
my ($twmask,$twres,$twtmp)=("%xmm8","%xmm9",@tweak[4]);
my ($key2,$ivp,$len_)=("%r8","%r9","%r9");
my $frame_size = 0x68 + ($win64?160:0);
$code.=<<___;
.globl aesni_xts_encrypt
.type aesni_xts_encrypt,\@function,6
.align 16
aesni_xts_encrypt:
lea -$frame_size(%rsp),%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,0x60(%rsp)
movaps %xmm7,0x70(%rsp)
movaps %xmm8,0x80(%rsp)
movaps %xmm9,0x90(%rsp)
movaps %xmm10,0xa0(%rsp)
movaps %xmm11,0xb0(%rsp)
movaps %xmm12,0xc0(%rsp)
movaps %xmm13,0xd0(%rsp)
movaps %xmm14,0xe0(%rsp)
movaps %xmm15,0xf0(%rsp)
.Lxts_enc_body:
___
$code.=<<___;
movups ($ivp),@tweak[5] # load clear-text tweak
mov 240(%r8),$rounds # key2->rounds
mov 240($key),$rnds_ # key1->rounds
___
# generate the tweak
&aesni_generate1("enc",$key2,$rounds,@tweak[5]);
$code.=<<___;
mov $key,$key_ # backup $key
mov $rnds_,$rounds # backup $rounds
mov $len,$len_ # backup $len
and \$-16,$len
movdqa .Lxts_magic(%rip),$twmask
pxor $twtmp,$twtmp
pcmpgtd @tweak[5],$twtmp # broadcast upper bits
___
for ($i=0;$i<4;$i++) {
$code.=<<___;
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[$i]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
pand $twmask,$twres # isolate carry and residue
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
pxor $twres,@tweak[5]
___
}
$code.=<<___;
sub \$16*6,$len
jc .Lxts_enc_short
shr \$1,$rounds
sub \$1,$rounds
mov $rounds,$rnds_
jmp .Lxts_enc_grandloop
.align 16
.Lxts_enc_grandloop:
pshufd \$0x13,$twtmp,$twres
movdqa @tweak[5],@tweak[4]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
movdqu `16*0`($inp),$inout0 # load input
pand $twmask,$twres # isolate carry and residue
movdqu `16*1`($inp),$inout1
pxor $twres,@tweak[5]
movdqu `16*2`($inp),$inout2
pxor @tweak[0],$inout0 # input^=tweak
movdqu `16*3`($inp),$inout3
pxor @tweak[1],$inout1
movdqu `16*4`($inp),$inout4
pxor @tweak[2],$inout2
movdqu `16*5`($inp),$inout5
lea `16*6`($inp),$inp
pxor @tweak[3],$inout3
$movkey ($key_),$rndkey0
pxor @tweak[4],$inout4
pxor @tweak[5],$inout5
# inline _aesni_encrypt6 and interleave first and last rounds
# with own code...
$movkey 16($key_),$rndkey1
pxor $rndkey0,$inout0
pxor $rndkey0,$inout1
movdqa @tweak[0],`16*0`(%rsp) # put aside tweaks
aesenc $rndkey1,$inout0
lea 32($key_),$key
pxor $rndkey0,$inout2
movdqa @tweak[1],`16*1`(%rsp)
aesenc $rndkey1,$inout1
pxor $rndkey0,$inout3
movdqa @tweak[2],`16*2`(%rsp)
aesenc $rndkey1,$inout2
pxor $rndkey0,$inout4
movdqa @tweak[3],`16*3`(%rsp)
aesenc $rndkey1,$inout3
pxor $rndkey0,$inout5
$movkey ($key),$rndkey0
dec $rounds
movdqa @tweak[4],`16*4`(%rsp)
aesenc $rndkey1,$inout4
movdqa @tweak[5],`16*5`(%rsp)
aesenc $rndkey1,$inout5
pxor $twtmp,$twtmp
pcmpgtd @tweak[5],$twtmp
jmp .Lxts_enc_loop6_enter
.align 16
.Lxts_enc_loop6:
aesenc $rndkey1,$inout0
aesenc $rndkey1,$inout1
dec $rounds
aesenc $rndkey1,$inout2
aesenc $rndkey1,$inout3
aesenc $rndkey1,$inout4
aesenc $rndkey1,$inout5
.Lxts_enc_loop6_enter:
$movkey 16($key),$rndkey1
aesenc $rndkey0,$inout0
aesenc $rndkey0,$inout1
lea 32($key),$key
aesenc $rndkey0,$inout2
aesenc $rndkey0,$inout3
aesenc $rndkey0,$inout4
aesenc $rndkey0,$inout5
$movkey ($key),$rndkey0
jnz .Lxts_enc_loop6
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesenc $rndkey1,$inout0
pand $twmask,$twres # isolate carry and residue
aesenc $rndkey1,$inout1
pcmpgtd @tweak[5],$twtmp # broadcast upper bits
aesenc $rndkey1,$inout2
pxor $twres,@tweak[5]
aesenc $rndkey1,$inout3
aesenc $rndkey1,$inout4
aesenc $rndkey1,$inout5
$movkey 16($key),$rndkey1
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[0]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesenc $rndkey0,$inout0
pand $twmask,$twres # isolate carry and residue
aesenc $rndkey0,$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
aesenc $rndkey0,$inout2
pxor $twres,@tweak[5]
aesenc $rndkey0,$inout3
aesenc $rndkey0,$inout4
aesenc $rndkey0,$inout5
$movkey 32($key),$rndkey0
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[1]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesenc $rndkey1,$inout0
pand $twmask,$twres # isolate carry and residue
aesenc $rndkey1,$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
aesenc $rndkey1,$inout2
pxor $twres,@tweak[5]
aesenc $rndkey1,$inout3
aesenc $rndkey1,$inout4
aesenc $rndkey1,$inout5
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[2]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesenclast $rndkey0,$inout0
pand $twmask,$twres # isolate carry and residue
aesenclast $rndkey0,$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
aesenclast $rndkey0,$inout2
pxor $twres,@tweak[5]
aesenclast $rndkey0,$inout3
aesenclast $rndkey0,$inout4
aesenclast $rndkey0,$inout5
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[3]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
xorps `16*0`(%rsp),$inout0 # output^=tweak
pand $twmask,$twres # isolate carry and residue
xorps `16*1`(%rsp),$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
pxor $twres,@tweak[5]
xorps `16*2`(%rsp),$inout2
movups $inout0,`16*0`($out) # write output
xorps `16*3`(%rsp),$inout3
movups $inout1,`16*1`($out)
xorps `16*4`(%rsp),$inout4
movups $inout2,`16*2`($out)
xorps `16*5`(%rsp),$inout5
movups $inout3,`16*3`($out)
mov $rnds_,$rounds # restore $rounds
movups $inout4,`16*4`($out)
movups $inout5,`16*5`($out)
lea `16*6`($out),$out
sub \$16*6,$len
jnc .Lxts_enc_grandloop
lea 3($rounds,$rounds),$rounds # restore original value
mov $key_,$key # restore $key
mov $rounds,$rnds_ # backup $rounds
.Lxts_enc_short:
add \$16*6,$len
jz .Lxts_enc_done
cmp \$0x20,$len
jb .Lxts_enc_one
je .Lxts_enc_two
cmp \$0x40,$len
jb .Lxts_enc_three
je .Lxts_enc_four
pshufd \$0x13,$twtmp,$twres
movdqa @tweak[5],@tweak[4]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
movdqu ($inp),$inout0
pand $twmask,$twres # isolate carry and residue
movdqu 16*1($inp),$inout1
pxor $twres,@tweak[5]
movdqu 16*2($inp),$inout2
pxor @tweak[0],$inout0
movdqu 16*3($inp),$inout3
pxor @tweak[1],$inout1
movdqu 16*4($inp),$inout4
lea 16*5($inp),$inp
pxor @tweak[2],$inout2
pxor @tweak[3],$inout3
pxor @tweak[4],$inout4
call _aesni_encrypt6
xorps @tweak[0],$inout0
movdqa @tweak[5],@tweak[0]
xorps @tweak[1],$inout1
xorps @tweak[2],$inout2
movdqu $inout0,($out)
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
jmp .Lxts_enc_done
.align 16
.Lxts_enc_one:
movups ($inp),$inout0
lea 16*1($inp),$inp
xorps @tweak[0],$inout0
___
&aesni_generate1("enc",$key,$rounds);
$code.=<<___;
xorps @tweak[0],$inout0
movdqa @tweak[1],@tweak[0]
movups $inout0,($out)
lea 16*1($out),$out
jmp .Lxts_enc_done
.align 16
.Lxts_enc_two:
movups ($inp),$inout0
movups 16($inp),$inout1
lea 32($inp),$inp
xorps @tweak[0],$inout0
xorps @tweak[1],$inout1
call _aesni_encrypt3
xorps @tweak[0],$inout0
movdqa @tweak[2],@tweak[0]
xorps @tweak[1],$inout1
movups $inout0,($out)
movups $inout1,16*1($out)
lea 16*2($out),$out
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
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)
movups $inout1,16*1($out)
movups $inout2,16*2($out)
lea 16*3($out),$out
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),$inp
xorps @tweak[1],$inout1
xorps @tweak[2],$inout2
xorps @tweak[3],$inout3
call _aesni_encrypt4
xorps @tweak[0],$inout0
movdqa @tweak[5],@tweak[0]
xorps @tweak[1],$inout1
xorps @tweak[2],$inout2
movups $inout0,($out)
xorps @tweak[3],$inout3
movups $inout1,16*1($out)
movups $inout2,16*2($out)
movups $inout3,16*3($out)
lea 16*4($out),$out
jmp .Lxts_enc_done
.align 16
.Lxts_enc_done:
and \$15,$len_
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:
___
$code.=<<___ if ($win64);
movaps 0x60(%rsp),%xmm6
movaps 0x70(%rsp),%xmm7
movaps 0x80(%rsp),%xmm8
movaps 0x90(%rsp),%xmm9
movaps 0xa0(%rsp),%xmm10
movaps 0xb0(%rsp),%xmm11
movaps 0xc0(%rsp),%xmm12
movaps 0xd0(%rsp),%xmm13
movaps 0xe0(%rsp),%xmm14
movaps 0xf0(%rsp),%xmm15
___
$code.=<<___;
lea $frame_size(%rsp),%rsp
.Lxts_enc_epilogue:
ret
.size aesni_xts_encrypt,.-aesni_xts_encrypt
___
$code.=<<___;
.globl aesni_xts_decrypt
.type aesni_xts_decrypt,\@function,6
.align 16
aesni_xts_decrypt:
lea -$frame_size(%rsp),%rsp
___
$code.=<<___ if ($win64);
movaps %xmm6,0x60(%rsp)
movaps %xmm7,0x70(%rsp)
movaps %xmm8,0x80(%rsp)
movaps %xmm9,0x90(%rsp)
movaps %xmm10,0xa0(%rsp)
movaps %xmm11,0xb0(%rsp)
movaps %xmm12,0xc0(%rsp)
movaps %xmm13,0xd0(%rsp)
movaps %xmm14,0xe0(%rsp)
movaps %xmm15,0xf0(%rsp)
.Lxts_dec_body:
___
$code.=<<___;
movups ($ivp),@tweak[5] # load clear-text tweak
mov 240($key2),$rounds # key2->rounds
mov 240($key),$rnds_ # key1->rounds
___
# generate the tweak
&aesni_generate1("enc",$key2,$rounds,@tweak[5]);
$code.=<<___;
xor %eax,%eax # if ($len%16) len-=16;
test \$15,$len
setnz %al
shl \$4,%rax
sub %rax,$len
mov $key,$key_ # backup $key
mov $rnds_,$rounds # backup $rounds
mov $len,$len_ # backup $len
and \$-16,$len
movdqa .Lxts_magic(%rip),$twmask
pxor $twtmp,$twtmp
pcmpgtd @tweak[5],$twtmp # broadcast upper bits
___
for ($i=0;$i<4;$i++) {
$code.=<<___;
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[$i]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
pand $twmask,$twres # isolate carry and residue
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
pxor $twres,@tweak[5]
___
}
$code.=<<___;
sub \$16*6,$len
jc .Lxts_dec_short
shr \$1,$rounds
sub \$1,$rounds
mov $rounds,$rnds_
jmp .Lxts_dec_grandloop
.align 16
.Lxts_dec_grandloop:
pshufd \$0x13,$twtmp,$twres
movdqa @tweak[5],@tweak[4]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
movdqu `16*0`($inp),$inout0 # load input
pand $twmask,$twres # isolate carry and residue
movdqu `16*1`($inp),$inout1
pxor $twres,@tweak[5]
movdqu `16*2`($inp),$inout2
pxor @tweak[0],$inout0 # input^=tweak
movdqu `16*3`($inp),$inout3
pxor @tweak[1],$inout1
movdqu `16*4`($inp),$inout4
pxor @tweak[2],$inout2
movdqu `16*5`($inp),$inout5
lea `16*6`($inp),$inp
pxor @tweak[3],$inout3
$movkey ($key_),$rndkey0
pxor @tweak[4],$inout4
pxor @tweak[5],$inout5
# inline _aesni_decrypt6 and interleave first and last rounds
# with own code...
$movkey 16($key_),$rndkey1
pxor $rndkey0,$inout0
pxor $rndkey0,$inout1
movdqa @tweak[0],`16*0`(%rsp) # put aside tweaks
aesdec $rndkey1,$inout0
lea 32($key_),$key
pxor $rndkey0,$inout2
movdqa @tweak[1],`16*1`(%rsp)
aesdec $rndkey1,$inout1
pxor $rndkey0,$inout3
movdqa @tweak[2],`16*2`(%rsp)
aesdec $rndkey1,$inout2
pxor $rndkey0,$inout4
movdqa @tweak[3],`16*3`(%rsp)
aesdec $rndkey1,$inout3
pxor $rndkey0,$inout5
$movkey ($key),$rndkey0
dec $rounds
movdqa @tweak[4],`16*4`(%rsp)
aesdec $rndkey1,$inout4
movdqa @tweak[5],`16*5`(%rsp)
aesdec $rndkey1,$inout5
pxor $twtmp,$twtmp
pcmpgtd @tweak[5],$twtmp
jmp .Lxts_dec_loop6_enter
.align 16
.Lxts_dec_loop6:
aesdec $rndkey1,$inout0
aesdec $rndkey1,$inout1
dec $rounds
aesdec $rndkey1,$inout2
aesdec $rndkey1,$inout3
aesdec $rndkey1,$inout4
aesdec $rndkey1,$inout5
.Lxts_dec_loop6_enter:
$movkey 16($key),$rndkey1
aesdec $rndkey0,$inout0
aesdec $rndkey0,$inout1
lea 32($key),$key
aesdec $rndkey0,$inout2
aesdec $rndkey0,$inout3
aesdec $rndkey0,$inout4
aesdec $rndkey0,$inout5
$movkey ($key),$rndkey0
jnz .Lxts_dec_loop6
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesdec $rndkey1,$inout0
pand $twmask,$twres # isolate carry and residue
aesdec $rndkey1,$inout1
pcmpgtd @tweak[5],$twtmp # broadcast upper bits
aesdec $rndkey1,$inout2
pxor $twres,@tweak[5]
aesdec $rndkey1,$inout3
aesdec $rndkey1,$inout4
aesdec $rndkey1,$inout5
$movkey 16($key),$rndkey1
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[0]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesdec $rndkey0,$inout0
pand $twmask,$twres # isolate carry and residue
aesdec $rndkey0,$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
aesdec $rndkey0,$inout2
pxor $twres,@tweak[5]
aesdec $rndkey0,$inout3
aesdec $rndkey0,$inout4
aesdec $rndkey0,$inout5
$movkey 32($key),$rndkey0
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[1]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesdec $rndkey1,$inout0
pand $twmask,$twres # isolate carry and residue
aesdec $rndkey1,$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
aesdec $rndkey1,$inout2
pxor $twres,@tweak[5]
aesdec $rndkey1,$inout3
aesdec $rndkey1,$inout4
aesdec $rndkey1,$inout5
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[2]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
aesdeclast $rndkey0,$inout0
pand $twmask,$twres # isolate carry and residue
aesdeclast $rndkey0,$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
aesdeclast $rndkey0,$inout2
pxor $twres,@tweak[5]
aesdeclast $rndkey0,$inout3
aesdeclast $rndkey0,$inout4
aesdeclast $rndkey0,$inout5
pshufd \$0x13,$twtmp,$twres
pxor $twtmp,$twtmp
movdqa @tweak[5],@tweak[3]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
xorps `16*0`(%rsp),$inout0 # output^=tweak
pand $twmask,$twres # isolate carry and residue
xorps `16*1`(%rsp),$inout1
pcmpgtd @tweak[5],$twtmp # broadcat upper bits
pxor $twres,@tweak[5]
xorps `16*2`(%rsp),$inout2
movups $inout0,`16*0`($out) # write output
xorps `16*3`(%rsp),$inout3
movups $inout1,`16*1`($out)
xorps `16*4`(%rsp),$inout4
movups $inout2,`16*2`($out)
xorps `16*5`(%rsp),$inout5
movups $inout3,`16*3`($out)
mov $rnds_,$rounds # restore $rounds
movups $inout4,`16*4`($out)
movups $inout5,`16*5`($out)
lea `16*6`($out),$out
sub \$16*6,$len
jnc .Lxts_dec_grandloop
lea 3($rounds,$rounds),$rounds # restore original value
mov $key_,$key # restore $key
mov $rounds,$rnds_ # backup $rounds
.Lxts_dec_short:
add \$16*6,$len
jz .Lxts_dec_done
cmp \$0x20,$len
jb .Lxts_dec_one
je .Lxts_dec_two
cmp \$0x40,$len
jb .Lxts_dec_three
je .Lxts_dec_four
pshufd \$0x13,$twtmp,$twres
movdqa @tweak[5],@tweak[4]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
movdqu ($inp),$inout0
pand $twmask,$twres # isolate carry and residue
movdqu 16*1($inp),$inout1
pxor $twres,@tweak[5]
movdqu 16*2($inp),$inout2
pxor @tweak[0],$inout0
movdqu 16*3($inp),$inout3
pxor @tweak[1],$inout1
movdqu 16*4($inp),$inout4
lea 16*5($inp),$inp
pxor @tweak[2],$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)
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
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),$inp
xorps @tweak[0],$inout0
___
&aesni_generate1("dec",$key,$rounds);
$code.=<<___;
xorps @tweak[0],$inout0
movdqa @tweak[1],@tweak[0]
movups $inout0,($out)
movdqa @tweak[2],@tweak[1]
lea 16*1($out),$out
jmp .Lxts_dec_done
.align 16
.Lxts_dec_two:
movups ($inp),$inout0
movups 16($inp),$inout1
lea 32($inp),$inp
xorps @tweak[0],$inout0
xorps @tweak[1],$inout1
call _aesni_decrypt3
xorps @tweak[0],$inout0
movdqa @tweak[2],@tweak[0]
xorps @tweak[1],$inout1
movdqa @tweak[3],@tweak[1]
movups $inout0,($out)
movups $inout1,16*1($out)
lea 16*2($out),$out
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
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],$inout1
movdqa @tweak[5],@tweak[1]
xorps @tweak[2],$inout2
movups $inout0,($out)
movups $inout1,16*1($out)
movups $inout2,16*2($out)
lea 16*3($out),$out
jmp .Lxts_dec_done
.align 16
.Lxts_dec_four:
pshufd \$0x13,$twtmp,$twres
movdqa @tweak[5],@tweak[4]
paddq @tweak[5],@tweak[5] # psllq 1,$tweak
movups ($inp),$inout0
pand $twmask,$twres # isolate carry and residue
movups 16*1($inp),$inout1
pxor $twres,@tweak[5]
movups 16*2($inp),$inout2
xorps @tweak[0],$inout0
movups 16*3($inp),$inout3
lea 16*4($inp),$inp
xorps @tweak[1],$inout1
xorps @tweak[2],$inout2
xorps @tweak[3],$inout3
call _aesni_decrypt4
xorps @tweak[0],$inout0
movdqa @tweak[4],@tweak[0]
xorps @tweak[1],$inout1
movdqa @tweak[5],@tweak[1]
xorps @tweak[2],$inout2
movups $inout0,($out)
xorps @tweak[3],$inout3
movups $inout1,16*1($out)
movups $inout2,16*2($out)
movups $inout3,16*3($out)
lea 16*4($out),$out
jmp .Lxts_dec_done
.align 16
.Lxts_dec_done:
and \$15,$len_
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:
___
$code.=<<___ if ($win64);
movaps 0x60(%rsp),%xmm6
movaps 0x70(%rsp),%xmm7
movaps 0x80(%rsp),%xmm8
movaps 0x90(%rsp),%xmm9
movaps 0xa0(%rsp),%xmm10
movaps 0xb0(%rsp),%xmm11
movaps 0xc0(%rsp),%xmm12
movaps 0xd0(%rsp),%xmm13
movaps 0xe0(%rsp),%xmm14
movaps 0xf0(%rsp),%xmm15
___
$code.=<<___;
lea $frame_size(%rsp),%rsp
.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 $reserved = $win64?0x40:-0x18; # used in decrypt
$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
movups $inout0,($ivp)
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:
___
$code.=<<___ if ($win64);
lea -0x58(%rsp),%rsp
movaps %xmm6,(%rsp)
movaps %xmm7,0x10(%rsp)
movaps %xmm8,0x20(%rsp)
movaps %xmm9,0x30(%rsp)
.Lcbc_decrypt_body:
___
$code.=<<___;
movups ($ivp),$iv
mov $rnds_,$rounds
cmp \$0x70,$len
jbe .Lcbc_dec_tail
shr \$1,$rnds_
sub \$0x70,$len
mov $rnds_,$rounds
movaps $iv,$reserved(%rsp)
jmp .Lcbc_dec_loop8_enter
.align 16
.Lcbc_dec_loop8:
movaps $rndkey0,$reserved(%rsp) # save IV
movups $inout7,($out)
lea 0x10($out),$out
.Lcbc_dec_loop8_enter:
$movkey ($key),$rndkey0
movups ($inp),$inout0 # load input
movups 0x10($inp),$inout1
$movkey 16($key),$rndkey1
lea 32($key),$key
movdqu 0x20($inp),$inout2
xorps $rndkey0,$inout0
movdqu 0x30($inp),$inout3
xorps $rndkey0,$inout1
movdqu 0x40($inp),$inout4
aesdec $rndkey1,$inout0
pxor $rndkey0,$inout2
movdqu 0x50($inp),$inout5
aesdec $rndkey1,$inout1
pxor $rndkey0,$inout3
movdqu 0x60($inp),$inout6
aesdec $rndkey1,$inout2
pxor $rndkey0,$inout4
movdqu 0x70($inp),$inout7
aesdec $rndkey1,$inout3
pxor $rndkey0,$inout5
dec $rounds
aesdec $rndkey1,$inout4
pxor $rndkey0,$inout6
aesdec $rndkey1,$inout5
pxor $rndkey0,$inout7
$movkey ($key),$rndkey0
aesdec $rndkey1,$inout6
aesdec $rndkey1,$inout7
$movkey 16($key),$rndkey1
call .Ldec_loop8_enter
movups ($inp),$rndkey1 # re-load input
movups 0x10($inp),$rndkey0
xorps $reserved(%rsp),$inout0 # ^= IV
xorps $rndkey1,$inout1
movups 0x20($inp),$rndkey1
xorps $rndkey0,$inout2
movups 0x30($inp),$rndkey0
xorps $rndkey1,$inout3
movups 0x40($inp),$rndkey1
xorps $rndkey0,$inout4
movups 0x50($inp),$rndkey0
xorps $rndkey1,$inout5
movups 0x60($inp),$rndkey1
xorps $rndkey0,$inout6
movups 0x70($inp),$rndkey0 # IV
xorps $rndkey1,$inout7
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
mov $rnds_,$rounds # restore $rounds
movups $inout4,0x40($out)
mov $key_,$key # restore $key
movups $inout5,0x50($out)
lea 0x80($inp),$inp
movups $inout6,0x60($out)
lea 0x70($out),$out
sub \$0x80,$len
ja .Lcbc_dec_loop8
movaps $inout7,$inout0
movaps $rndkey0,$iv
add \$0x70,$len
jle .Lcbc_dec_tail_collected
movups $inout0,($out)
lea 1($rnds_,$rnds_),$rounds
lea 0x10($out),$out
.Lcbc_dec_tail:
movups ($inp),$inout0
movaps $inout0,$in0
cmp \$0x10,$len
jbe .Lcbc_dec_one
movups 0x10($inp),$inout1
movaps $inout1,$in1
cmp \$0x20,$len
jbe .Lcbc_dec_two
movups 0x20($inp),$inout2
movaps $inout2,$in2
cmp \$0x30,$len
jbe .Lcbc_dec_three
movups 0x30($inp),$inout3
cmp \$0x40,$len
jbe .Lcbc_dec_four
movups 0x40($inp),$inout4
cmp \$0x50,$len
jbe .Lcbc_dec_five
movups 0x50($inp),$inout5
cmp \$0x60,$len
jbe .Lcbc_dec_six
movups 0x60($inp),$inout6
movaps $iv,$reserved(%rsp) # save IV
call _aesni_decrypt8
movups ($inp),$rndkey1
movups 0x10($inp),$rndkey0
xorps $reserved(%rsp),$inout0 # ^= IV
xorps $rndkey1,$inout1
movups 0x20($inp),$rndkey1
xorps $rndkey0,$inout2
movups 0x30($inp),$rndkey0
xorps $rndkey1,$inout3
movups 0x40($inp),$rndkey1
xorps $rndkey0,$inout4
movups 0x50($inp),$rndkey0
xorps $rndkey1,$inout5
movups 0x60($inp),$iv # IV
xorps $rndkey0,$inout6
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
movups $inout4,0x40($out)
movups $inout5,0x50($out)
lea 0x60($out),$out
movaps $inout6,$inout0
sub \$0x70,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_one:
___
&aesni_generate1("dec",$key,$rounds);
$code.=<<___;
xorps $iv,$inout0
movaps $in0,$iv
sub \$0x10,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_two:
xorps $inout2,$inout2
call _aesni_decrypt3
xorps $iv,$inout0
xorps $in0,$inout1
movups $inout0,($out)
movaps $in1,$iv
movaps $inout1,$inout0
lea 0x10($out),$out
sub \$0x20,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_three:
call _aesni_decrypt3
xorps $iv,$inout0
xorps $in0,$inout1
movups $inout0,($out)
xorps $in1,$inout2
movups $inout1,0x10($out)
movaps $in2,$iv
movaps $inout2,$inout0
lea 0x20($out),$out
sub \$0x30,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_four:
call _aesni_decrypt4
xorps $iv,$inout0
movups 0x30($inp),$iv
xorps $in0,$inout1
movups $inout0,($out)
xorps $in1,$inout2
movups $inout1,0x10($out)
xorps $in2,$inout3
movups $inout2,0x20($out)
movaps $inout3,$inout0
lea 0x30($out),$out
sub \$0x40,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_five:
xorps $inout5,$inout5
call _aesni_decrypt6
movups 0x10($inp),$rndkey1
movups 0x20($inp),$rndkey0
xorps $iv,$inout0
xorps $in0,$inout1
xorps $rndkey1,$inout2
movups 0x30($inp),$rndkey1
xorps $rndkey0,$inout3
movups 0x40($inp),$iv
xorps $rndkey1,$inout4
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
lea 0x40($out),$out
movaps $inout4,$inout0
sub \$0x50,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_six:
call _aesni_decrypt6
movups 0x10($inp),$rndkey1
movups 0x20($inp),$rndkey0
xorps $iv,$inout0
xorps $in0,$inout1
xorps $rndkey1,$inout2
movups 0x30($inp),$rndkey1
xorps $rndkey0,$inout3
movups 0x40($inp),$rndkey0
xorps $rndkey1,$inout4
movups 0x50($inp),$iv
xorps $rndkey0,$inout5
movups $inout0,($out)
movups $inout1,0x10($out)
movups $inout2,0x20($out)
movups $inout3,0x30($out)
movups $inout4,0x40($out)
lea 0x50($out),$out
movaps $inout5,$inout0
sub \$0x60,$len
jmp .Lcbc_dec_tail_collected
.align 16
.Lcbc_dec_tail_collected:
and \$15,$len
movups $iv,($ivp)
jnz .Lcbc_dec_tail_partial
movups $inout0,($out)
jmp .Lcbc_dec_ret
.align 16
.Lcbc_dec_tail_partial:
movaps $inout0,$reserved(%rsp)
mov \$16,%rcx
mov $out,%rdi
sub $len,%rcx
lea $reserved(%rsp),%rsi
.long 0x9066A4F3 # rep movsb
.Lcbc_dec_ret:
___
$code.=<<___ if ($win64);
movaps (%rsp),%xmm6
movaps 0x10(%rsp),%xmm7
movaps 0x20(%rsp),%xmm8
movaps 0x30(%rsp),%xmm9
lea 0x58(%rsp),%rsp
___
$code.=<<___;
.Lcbc_ret:
ret
.size ${PREFIX}_cbc_encrypt,.-${PREFIX}_cbc_encrypt
___
}
# int $PREFIX_set_[en|de]crypt_key (const unsigned char *userKey,
# int bits, AES_KEY *key)
{ my ($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
$movkey %xmm0,($inp)
.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.
#
$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
movups ($inp),%xmm0 # pull first 128 bits of *userKey
xorps %xmm4,%xmm4 # low dword of xmm4 is assumed 0
lea 16($key),%rax
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
$movkey %xmm0,($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 $bits,80(%rax) # 240(%rdx)
xor %eax,%eax
jmp .Lenc_key_ret
.align 16
.L12rounds:
movq 16($inp),%xmm2 # remaining 1/3 of *userKey
mov \$11,$bits # 12 rounds for 192
$movkey %xmm0,($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 $bits,48(%rax) # 240(%rdx)
xor %rax, %rax
jmp .Lenc_key_ret
.align 16
.L14rounds:
movups 16($inp),%xmm2 # remaning half of *userKey
mov \$13,$bits # 14 rounds for 256
lea 16(%rax),%rax
$movkey %xmm0,($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
.Lbad_keybits:
mov \$-2,%rax
.Lenc_key_ret:
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
___
}
$code.=<<___;
.align 64
.Lbswap_mask:
.byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
.Lincrement32:
.long 6,6,6,0
.Lincrement64:
.long 1,0,0,0
.Lxts_magic:
.long 0x87,0,1,0
.asciz "AES for Intel AES-NI, CRYPTOGAMS by <appro\@openssl.org>"
.align 64
___
# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
# CONTEXT *context,DISPATCHER_CONTEXT *disp)
if ($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 ctr32_se_handler,\@abi-omnipotent
.align 16
ctr32_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
lea .Lctr32_body(%rip),%r10
cmp %r10,%rbx # context->Rip<"prologue" label
jb .Lcommon_seh_tail
mov 152($context),%rax # pull context->Rsp
lea .Lctr32_ret(%rip),%r10
cmp %r10,%rbx
jae .Lcommon_seh_tail
lea 0x20(%rax),%rsi # %xmm save area
lea 512($context),%rdi # &context.Xmm6
mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
.long 0xa548f3fc # cld; rep movsq
lea 0xc8(%rax),%rax # adjust stack pointer
jmp .Lcommon_seh_tail
.size ctr32_se_handler,.-ctr32_se_handler
.type xts_se_handler,\@abi-omnipotent
.align 16
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($context),%rax # pull context->Rsp
mov 4(%r11),%r10d # HandlerData[1]
lea (%rsi,%r10),%r10 # epilogue label
cmp %r10,%rbx # context->Rip>=epilogue label
jae .Lcommon_seh_tail
lea 0x60(%rax),%rsi # %xmm save area
lea 512($context),%rdi # & context.Xmm6
mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
.long 0xa548f3fc # cld; rep movsq
lea 0x68+160(%rax),%rax # adjust stack pointer
jmp .Lcommon_seh_tail
.size xts_se_handler,.-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($context),%rbx # pull context->Rip
lea .Lcbc_decrypt(%rip),%r10
cmp %r10,%rbx # context->Rip<"prologue" label
jb .Lcommon_seh_tail
lea .Lcbc_decrypt_body(%rip),%r10
cmp %r10,%rbx # context->Rip<cbc_decrypt_body
jb .Lrestore_cbc_rax
lea .Lcbc_ret(%rip),%r10
cmp %r10,%rbx # context->Rip>="epilogue" label
jae .Lcommon_seh_tail
lea 0(%rax),%rsi # top of stack
lea 512($context),%rdi # &context.Xmm6
mov \$8,%ecx # 4*sizeof(%xmm0)/sizeof(%rax)
.long 0xa548f3fc # cld; rep movsq
lea 0x58(%rax),%rax # adjust stack pointer