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boringssl / boringssl / chromium-stable / . / crypto / fipsmodule / aes / asm / aesni-x86_64.pl
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#! /usr/bin/env perl
# Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
#
# ====================================================================
# 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
# "straightforward" 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 instructions
# 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
# utilizes 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.
# November 2015
#
# Add aesni_ocb_[en|de]crypt. 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 OCB
# Westmere 3.77/1.25 1.25 1.25 1.26
# * Bridge 5.07/0.74 0.75 0.90 0.85 0.98
# Haswell 4.44/0.63 0.63 0.73 0.63 0.70
# Skylake 2.62/0.63 0.63 0.63 0.63
# Silvermont 5.75/3.54 3.56 4.12 3.87(*) 4.11
# Knights L 2.54/0.77 0.78 0.85 - 1.50
# Goldmont 3.82/1.26 1.26 1.29 1.29 1.50
# Bulldozer 5.77/0.70 0.72 0.90 0.70 0.95
# Ryzen 2.71/0.35 0.35 0.44 0.38 0.49
#
# (*) 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="aes_hw"; # 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 = $PREFIX eq "aes_hw" ? "movups" : "movups";
@_4args=$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
${PREFIX}_encrypt:
.cfi_startproc
_CET_ENDBR
#ifdef BORINGSSL_DISPATCH_TEST
.extern BORINGSSL_function_hit
movb \$1,BORINGSSL_function_hit+1(%rip)
#endif
movups ($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
.cfi_endproc
.size ${PREFIX}_encrypt,.-${PREFIX}_encrypt
.globl ${PREFIX}_decrypt
.type ${PREFIX}_decrypt,\@abi-omnipotent
.align 16
${PREFIX}_decrypt:
.cfi_startproc
_CET_ENDBR
movups ($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
.cfi_endproc
.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:
.cfi_startproc
$movkey ($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
.cfi_endproc
.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:
.cfi_startproc
$movkey ($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
.cfi_endproc
.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:
.cfi_startproc
$movkey ($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
.cfi_endproc
.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:
.cfi_startproc
$movkey ($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
.cfi_endproc
.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:
.cfi_startproc
$movkey ($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
.cfi_endproc
.size _aesni_${dir}rypt8,.-_aesni_${dir}rypt8
___
}
&aesni_generate2("enc") if ($PREFIX eq "aes_hw");
&aesni_generate2("dec");
&aesni_generate3("enc") if ($PREFIX eq "aes_hw");
&aesni_generate3("dec");
&aesni_generate4("enc") if ($PREFIX eq "aes_hw");
&aesni_generate4("dec");
&aesni_generate6("enc") if ($PREFIX eq "aes_hw");
&aesni_generate6("dec");
&aesni_generate8("enc") if ($PREFIX eq "aes_hw");
&aesni_generate8("dec");
if ($PREFIX eq "aes_hw") {
########################################################################
# void aesni_ecb_encrypt (const void *in, void *out,
# size_t length, const AES_KEY *key,
# int enc);
$code.=<<___;
.globl ${PREFIX}_ecb_encrypt
.type ${PREFIX}_ecb_encrypt,\@function,5
.align 16
${PREFIX}_ecb_encrypt:
.cfi_startproc
_CET_ENDBR
___
$code.=<<___ if ($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
.cfi_endproc
.size ${PREFIX}_ecb_encrypt,.-${PREFIX}_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)
#
if (0) { # Omit these functions in BoringSSL
my $cmac="%r9"; # 6th argument
my $increment="%xmm9";
my $iv="%xmm6";
my $bswap_mask="%xmm7";
$code.=<<___;
.globl ${PREFIX}_ccm64_encrypt_blocks
.type ${PREFIX}_ccm64_encrypt_blocks,\@function,6
.align 16
${PREFIX}_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 ${PREFIX}_ccm64_encrypt_blocks,.-${PREFIX}_ccm64_encrypt_blocks
___
######################################################################
$code.=<<___;
.globl ${PREFIX}_ccm64_decrypt_blocks
.type ${PREFIX}_ccm64_decrypt_blocks,\@function,6
.align 16
${PREFIX}_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 ${PREFIX}_ccm64_decrypt_blocks,.-${PREFIX}_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,$ctr)=("%ebp","${ivp}d");
my $frame_size = 0x80 + ($win64?160:0);
$code.=<<___;
.globl ${PREFIX}_ctr32_encrypt_blocks
.type ${PREFIX}_ctr32_encrypt_blocks,\@function,5
.align 16
${PREFIX}_ctr32_encrypt_blocks:
.cfi_startproc
_CET_ENDBR
#ifdef BORINGSSL_DISPATCH_TEST
movb \$1,BORINGSSL_function_hit(%rip)
#endif
cmp \$1,$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),$key_ # use $key_ as frame pointer
.cfi_def_cfa_register $key_
push %rbp
.cfi_push %rbp
sub \$$frame_size,%rsp
and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8($key_) # offload everything
movaps %xmm7,-0x98($key_)
movaps %xmm8,-0x88($key_)
movaps %xmm9,-0x78($key_)
movaps %xmm10,-0x68($key_)
movaps %xmm11,-0x58($key_)
movaps %xmm12,-0x48($key_)
movaps %xmm13,-0x38($key_)
movaps %xmm14,-0x28($key_)
movaps %xmm15,-0x18($key_)
.Lctr32_body:
___
$code.=<<___;
# 8 16-byte words on top of stack are counter values
# xor-ed with zero-round key
movdqu ($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
xor $key0,%r9d
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)
lea 0x80($key),$key # size optimization
sub \$8,$len # $len is biased by -8
jmp .Lctr32_loop8
.align 32
.Lctr32_loop8:
add \$8,$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
prefetcht0 0x1c0($inp) # We process 128 bytes (8*16), so to prefetch 1 iteration
prefetcht0 0x200($inp) # We need to prefetch 2 64 byte lines
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 remaining $len
jz .Lctr32_done # done if ($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 register 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 -0xa8($key_),%xmm6
movaps %xmm0,-0xa8($key_) # clear stack
movaps -0x98($key_),%xmm7
movaps %xmm0,-0x98($key_)
movaps -0x88($key_),%xmm8
movaps %xmm0,-0x88($key_)
movaps -0x78($key_),%xmm9
movaps %xmm0,-0x78($key_)
movaps -0x68($key_),%xmm10
movaps %xmm0,-0x68($key_)
movaps -0x58($key_),%xmm11
movaps %xmm0,-0x58($key_)
movaps -0x48($key_),%xmm12
movaps %xmm0,-0x48($key_)
movaps -0x38($key_),%xmm13
movaps %xmm0,-0x38($key_)
movaps -0x28($key_),%xmm14
movaps %xmm0,-0x28($key_)
movaps -0x18($key_),%xmm15
movaps %xmm0,-0x18($key_)
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)
___
$code.=<<___;
mov -8($key_),%rbp
.cfi_restore %rbp
lea ($key_),%rsp
.cfi_def_cfa_register %rsp
.Lctr32_epilogue:
ret
.cfi_endproc
.size ${PREFIX}_ctr32_encrypt_blocks,.-${PREFIX}_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]);
#
if (0) { # Omit these functions in BoringSSL
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);
my $key_ = "%rbp"; # override so that we can use %r11 as FP
$code.=<<___;
.globl ${PREFIX}_xts_encrypt
.type ${PREFIX}_xts_encrypt,\@function,6
.align 16
${PREFIX}_xts_encrypt:
.cfi_startproc
_CET_ENDBR
lea (%rsp),%r11 # frame pointer
.cfi_def_cfa_register %r11
push %rbp
.cfi_push %rbp
sub \$$frame_size,%rsp
and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r11) # offload everything
movaps %xmm7,-0x98(%r11)
movaps %xmm8,-0x88(%r11)
movaps %xmm9,-0x78(%r11)
movaps %xmm10,-0x68(%r11)
movaps %xmm11,-0x58(%r11)
movaps %xmm12,-0x48(%r11)
movaps %xmm13,-0x38(%r11)
movaps %xmm14,-0x28(%r11)
movaps %xmm15,-0x18(%r11)
.Lxts_enc_body:
___
$code.=<<___;
movups ($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] # calculate 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 -0xa8(%r11),%xmm6
movaps %xmm0,-0xa8(%r11) # clear stack
movaps -0x98(%r11),%xmm7
movaps %xmm0,-0x98(%r11)
movaps -0x88(%r11),%xmm8
movaps %xmm0,-0x88(%r11)
movaps -0x78(%r11),%xmm9
movaps %xmm0,-0x78(%r11)
movaps -0x68(%r11),%xmm10
movaps %xmm0,-0x68(%r11)
movaps -0x58(%r11),%xmm11
movaps %xmm0,-0x58(%r11)
movaps -0x48(%r11),%xmm12
movaps %xmm0,-0x48(%r11)
movaps -0x38(%r11),%xmm13
movaps %xmm0,-0x38(%r11)
movaps -0x28(%r11),%xmm14
movaps %xmm0,-0x28(%r11)
movaps -0x18(%r11),%xmm15
movaps %xmm0,-0x18(%r11)
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.=<<___;
mov -8(%r11),%rbp
.cfi_restore %rbp
lea (%r11),%rsp
.cfi_def_cfa_register %rsp
.Lxts_enc_epilogue:
ret
.cfi_endproc
.size ${PREFIX}_xts_encrypt,.-${PREFIX}_xts_encrypt
___
$code.=<<___;
.globl ${PREFIX}_xts_decrypt
.type ${PREFIX}_xts_decrypt,\@function,6
.align 16
${PREFIX}_xts_decrypt:
.cfi_startproc
_CET_ENDBR
lea (%rsp),%r11 # frame pointer
.cfi_def_cfa_register %r11
push %rbp
.cfi_push %rbp
sub \$$frame_size,%rsp
and \$-16,%rsp # Linux kernel stack can be incorrectly seeded
___
$code.=<<___ if ($win64);
movaps %xmm6,-0xa8(%r11) # offload everything
movaps %xmm7,-0x98(%r11)
movaps %xmm8,-0x88(%r11)
movaps %xmm9,-0x78(%r11)
movaps %xmm10,-0x68(%r11)
movaps %xmm11,-0x58(%r11)
movaps %xmm12,-0x48(%r11)
movaps %xmm13,-0x38(%r11)
movaps %xmm14,-0x28(%r11)
movaps %xmm15,-0x18(%r11)
.Lxts_dec_body:
___
$code.=<<___;
movups ($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] # calculate 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 -0xa8(%r11),%xmm6
movaps %xmm0,-0xa8(%r11) # clear stack
movaps -0x98(%r11),%xmm7
movaps %xmm0,-0x98(%r11)
movaps -0x88(%r11),%xmm8
movaps %xmm0,-0x88(%r11)
movaps -0x78(%r11),%xmm9
movaps %xmm0,-0x78(%r11)
movaps -0x68(%r11),%xmm10
movaps %xmm0,-0x68(%r11)
movaps -0x58(%r11),%xmm11
movaps %xmm0,-0x58(%r11)
movaps -0x48(%r11),%xmm12
movaps %xmm0,-0x48(%r11)
movaps -0x38(%r11),%xmm13
movaps %xmm0,-0x38(%r11)
movaps -0x28(%r11),%xmm14
movaps %xmm0,-0x28(%r11)
movaps -0x18(%r11),%xmm15
movaps %xmm0,-0x18(%r11)
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.=<<___;
mov -8(%r11),%rbp
.cfi_restore %rbp
lea (%r11),%rsp
.cfi_def_cfa_register %rsp
.Lxts_dec_epilogue:
ret
.cfi_endproc
.size ${PREFIX}_xts_decrypt,.-${PREFIX}_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));
$code.=<<___;
.globl ${PREFIX}_cbc_encrypt
.type ${PREFIX}_cbc_encrypt,\@function,6
.align 16
${PREFIX}_cbc_encrypt:
.cfi_startproc
_CET_ENDBR
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),%r11 # frame pointer
.cfi_def_cfa_register %r11
push %rbp
.cfi_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:
___
my $inp_=$key_="%rbp"; # reassign $key_
$code.=<<___;
mov $key,$key_ # [re-]backup $key [after reassignment]
movups ($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
cmp \$0x70,$len
jbe .Lcbc_dec_six_or_seven
sub \$0x70,$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
mov \$-1,$inp_
cmp \$0x70,$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
adc \$0,$inp_
and \$128,$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
.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.=<<___;
mov -8(%r11),%rbp
.cfi_restore %rbp
lea (%r11),%rsp
.cfi_def_cfa_register %rsp
.Lcbc_ret:
ret
.cfi_endproc
.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
${PREFIX}_set_decrypt_key:
.cfi_startproc
_CET_ENDBR
.byte 0x48,0x83,0xEC,0x08 # sub rsp,8
.cfi_adjust_cfa_offset 8
call __aesni_set_encrypt_key
shl \$4,$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
.cfi_adjust_cfa_offset -8
ret
.cfi_endproc
.LSEH_end_set_decrypt_key:
.size ${PREFIX}_set_decrypt_key,.-${PREFIX}_set_decrypt_key
___
# This is based on submission from Intel by
# Huang Ying
# Vinodh Gopal
# Kahraman Akdemir
#
# Aggressively 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:
.cfi_startproc
_CET_ENDBR
#ifdef BORINGSSL_DISPATCH_TEST
movb \$1,BORINGSSL_function_hit+3(%rip)
#endif
.byte 0x48,0x83,0xEC,0x08 # sub rsp,8
.cfi_adjust_cfa_offset 8
mov \$-1,%rax
test $inp,$inp
jz .Lenc_key_ret
test $key,$key
jz .Lenc_key_ret
movups ($inp),%xmm0 # pull first 128 bits of *userKey
xorps %xmm4,%xmm4 # low dword of xmm4 is assumed 0
leaq OPENSSL_ia32cap_P(%rip),%r10
movl 4(%r10),%r10d
and \$`1<<28|1<<11`,%r10d # AVX and XOP bits
lea 16($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($inp),%xmm2 # remaining half of *userKey
mov \$13,$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
.cfi_adjust_cfa_offset -8
ret
.cfi_endproc
.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
___
}
$code.=<<___;
.section .rodata
.align 64
.Lbswap_mask:
.byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
.Lincrement32:
.long 6,6,6,0
.Lincrement64:
.long 1,0,0,0
.Lxts_magic:
.long 0x87,0,1,0
.Lincrement1:
.byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1
.Lkey_rotate:
.long 0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d,0x0c0f0e0d
.Lkey_rotate192:
.long 0x04070605,0x04070605,0x04070605,0x04070605
.Lkey_rcon1:
.long 1,1,1,1
.Lkey_rcon1b:
.long 0x1b,0x1b,0x1b,0x1b
.asciz "AES for Intel AES-NI, CRYPTOGAMS by <appro\@openssl.org>"
.align 64
.text
___
# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
# CONTEXT *context,DISPATCHER_CONTEXT *disp)
if ($win64) {
$rec="%rcx";
$frame="%rdx";
$context="%r8";
$disp="%r9";
$code.=<<___;
.extern __imp_RtlVirtualUnwind
___
$code.=<<___ if ($PREFIX eq "aes_hw");
.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 ${PREFIX}_ccm64_se_handler,.-${PREFIX}_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($context),%rax # pull context->Rsp
mov 4(%r11),%r10d # HandlerData[1]
lea (%rsi,%r10),%r10 # epilogue label
cmp %r10,%rbx # context->Rip>=epilogue label
jae .Lcommon_seh_tail
mov 208($context),%rax # pull context->R11
lea -0xa8(%rax),%rsi # %xmm save area
lea 512($context),%rdi # & context.Xmm6
mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
.long 0xa548f3fc # cld; rep movsq
mov -8(%rax),%rbp # restore saved %rbp
mov %rbp,160($context) # restore context->Rbp
jmp .Lcommon_seh_tail
.size ctr_xts_se_handler,.-ctr_xts_se_handler
___
# BoringSSL omits the OCB functions.
$code.=<<___ if (0);
.type ocb_se_handler,\@abi-omnipotent
.align 16
ocb_se_handler:
push %rsi
push %rdi
push %rbx
push %rbp
push %r12
push %r13
push %r14
push %r15
pushfq
sub \$64,%rsp
mov 120($context),%rax # pull context->Rax
mov 248($context),%rbx # pull context->Rip
mov 8($disp),%rsi # disp->ImageBase
mov 56($disp),%r11 # disp->HandlerData
mov 0(%r11),%r10d # HandlerData[0]
lea (%rsi,%r10),%r10 # prologue lable
cmp %r10,%rbx # context->Rip<prologue label
jb .Lcommon_seh_tail
mov 4(%r11),%r10d # HandlerData[1]
lea (%rsi,%r10),%r10 # epilogue label
cmp %r10,%rbx # context->Rip>=epilogue label
jae .Lcommon_seh_tail
mov 8(%r11),%r10d # HandlerData[2]
lea (%rsi,%r10),%r10
cmp %r10,%rbx # context->Rip>=pop label
jae .Locb_no_xmm
mov 152($context),%rax # pull context->Rsp
lea (%rax),%rsi # %xmm save area
lea 512($context),%rdi # & context.Xmm6
mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
.long 0xa548f3fc # cld; rep movsq
lea 0xa0+0x28(%rax),%rax
.Locb_no_xmm:
mov -8(%rax),%rbx
mov -16(%rax),%rbp
mov -24(%rax),%r12
mov -32(%rax),%r13
mov -40(%rax),%r14
mov %rbx,144($context) # restore context->Rbx
mov %rbp,160($context) # restore context->Rbp
mov %r12,216($context) # restore context->R12
mov %r13,224($context) # restore context->R13
mov %r14,232($context) # restore context->R14
jmp .Lcommon_seh_tail
.size ocb_se_handler,.-ocb_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($context),%rbx # pull context->Rip
lea .Lcbc_decrypt_bulk(%rip),%r10
cmp %r10,%rbx # context->Rip<"prologue" label
jb .Lcommon_seh_tail
mov 120($context),%rax # pull context->Rax
lea .Lcbc_decrypt_body(%rip),%r10
cmp %r10,%rbx # context->Rip<cbc_decrypt_body
jb .Lcommon_seh_tail
mov 152($context),%rax # pull context->Rsp
lea .Lcbc_ret(%rip),%r10
cmp %r10,%rbx # context->Rip>="epilogue" label
jae .Lcommon_seh_tail
lea 16(%rax),%rsi # %xmm save area
lea 512($context),%rdi # &context.Xmm6
mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax)
.long 0xa548f3fc # cld; rep movsq
mov 208($context),%rax # pull context->R11
mov -8(%rax),%rbp # restore saved %rbp
mov %rbp,160($context) # restore context->Rbp
.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 "aes_hw");
.rva .LSEH_begin_${PREFIX}_ecb_encrypt
.rva .LSEH_end_${PREFIX}_ecb_encrypt
.rva .LSEH_info_ecb
.rva .LSEH_begin_${PREFIX}_ctr32_encrypt_blocks
.rva .LSEH_end_${PREFIX}_ctr32_encrypt_blocks
.rva .LSEH_info_ctr32
___
$code.=<<___;
.rva .LSEH_begin_${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 "aes_hw");
.LSEH_info_ecb:
.byte 9,0,0,0
.rva ecb_ccm64_se_handler
.rva .Lecb_enc_body,.Lecb_enc_ret # HandlerData[]
.LSEH_info_ctr32:
.byte 9,0,0,0
.rva ctr_xts_se_handler
.rva .Lctr32_body,.Lctr32_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 or die "error closing STDOUT: $!";