--- /dev/null
+#!/usr/bin/env perl
+
+###################################################################
+### AES-128 [originally in CTR mode] ###
+### bitsliced implementation for Intel Core 2 processors ###
+### requires support of SSE extensions up to SSSE3 ###
+### Author: Emilia Käsper ###
+### Date: 2009-03-19 ###
+### Public domain ###
+### ###
+### See http://homes.esat.kuleuven.be/~ekasper/#software for ###
+### further information. ###
+###################################################################
+#
+# September 2011.
+#
+# Started as transliteration to "perlasm" the original code has
+# undergone following changes:
+#
+# - code was made position-independent;
+# - rounds were folded into a loop resulting in >5x size reduction
+# from 12.5KB to 2.2KB;
+# - above was possibile thanks to mixcolumns() modification that
+# allowed to feed its output back to aesenc[last], this was
+# achieved at cost of two additional inter-registers moves;
+# - some instruction reordering and interleaving;
+# - this module doesn't implement key setup subroutine, instead it
+# relies on conversion of "conventional" key schedule as returned
+# by AES_set_encrypt_key (see discussion below);
+# - first and last round keys are treated differently, which allowed
+# to skip one shiftrows(), reduce bit-sliced key schedule and
+# speed-up conversion by 22%;
+# - support for 192- and 256-bit keys was added;
+#
+# Resulting performance in CPU cycles spent to encrypt one byte out
+# of 4096-byte buffer with 128-bit key is:
+#
+# Emilia's this(*) difference
+#
+# Core 2 9.30 8.69 +7%
+# Nehalem(**) 7.63 6.98 +9%
+# Atom 17.1 17.4 -2%(***)
+#
+# (*) Comparison is not completely fair, because "this" is ECB,
+# i.e. no extra processing such as counter values calculation
+# and xor-ing input as in Emilia's CTR implementation is
+# performed. However, the CTR calculations stand for not more
+# than 1% of total time, so comparison is *rather* fair.
+#
+# (**) Results were collected on Westmere, which is considered to
+# be equivalent to Nehalem for this code.
+#
+# (***) Slowdown on Atom is rather strange per se, because original
+# implementation has a number of 9+-bytes instructions, which
+# are bad for Atom front-end, and which I eliminated completely.
+# In attempt to address deterioration sbox() was tested in FP
+# SIMD "domain" (movaps instead of movdqa, xorps instead of
+# pxor, etc.). While it resulted in nominal 4% improvement on
+# Atom, it hurted Westmere by more than 2x factor.
+#
+# As for key schedule conversion subroutine. Interface to OpenSSL
+# relies on per-invocation on-the-fly conversion. This naturally
+# has impact on performance, especially for short inputs. Conversion
+# time in CPU cycles and its ratio to CPU cycles spent in 8x block
+# function is:
+#
+# conversion conversion/8x block
+# Core 2 410 0.37
+# Nehalem 310 0.35
+# Atom 570 0.26
+#
+# The ratio values mean that 128-byte blocks will be processed
+# 21-27% slower, 256-byte blocks - 12-16%, 382-byte blocks - 8-11%,
+# etc. Then keep in mind that input sizes not divisible by 128 are
+# *effectively* slower, especially shortest ones, e.g. consecutive
+# 144-byte blocks are processed 44% slower than one would expect,
+# 272 - 29%, 400 - 22%, etc. Yet, despite all these "shortcomings"
+# it's still faster than ["hyper-threading-safe" code path in]
+# aes-x86_64.pl on all lengths above 64 bytes...
+#
+# <appro@openssl.org>
+
+$flavour = shift;
+$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 STDOUT,"| $^X $xlate $flavour $output";
+
+my ($inp,$out,$len,$key,$ivp)=("%rdi","%rsi","%rdx","%rcx");
+my @XMM=map("%xmm$_",(15,0..14)); # best on Atom, +10% over (0..15)
+
+{
+my ($key,$rounds,$const)=("%rax","%r10d","%r11");
+
+sub sbox {
+# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
+# output in lsb > [b0, b1, b4, b6, b3, b7, b2, b5] < msb
+my @b=@_[0..7];
+my @t=@_[8..11];
+my @s=@_[12..15];
+ &InBasisChange (@b);
+ &Inv_GF256 (@b[6,5,0,3,7,1,4,2],@t,@s);
+ &OutBasisChange (@b[7,1,4,2,6,5,0,3]);
+}
+
+sub InBasisChange {
+# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
+# output in lsb > [b6, b5, b0, b3, b7, b1, b4, b2] < msb
+my @b=@_[0..7];
+$code.=<<___;
+ pxor @b[6], @b[5]
+ pxor @b[1], @b[2]
+ pxor @b[0], @b[5]
+ pxor @b[2], @b[6]
+ pxor @b[0], @b[3]
+
+ pxor @b[3], @b[6]
+ pxor @b[7], @b[3]
+ pxor @b[5], @b[7]
+ pxor @b[4], @b[3]
+ pxor @b[5], @b[4]
+ pxor @b[1], @b[3]
+
+ pxor @b[7], @b[2]
+ pxor @b[5], @b[1]
+___
+}
+
+sub OutBasisChange {
+# input in lsb > [b0, b1, b2, b3, b4, b5, b6, b7] < msb
+# output in lsb > [b6, b1, b2, b4, b7, b0, b3, b5] < msb
+my @b=@_[0..7];
+$code.=<<___;
+ pxor @b[6], @b[0]
+ pxor @b[4], @b[1]
+ pxor @b[0], @b[2]
+ pxor @b[6], @b[4]
+ pxor @b[1], @b[6]
+
+ pxor @b[5], @b[1]
+ pxor @b[3], @b[5]
+ pxor @b[7], @b[3]
+ pxor @b[5], @b[7]
+ pxor @b[5], @b[2]
+
+ pxor @b[7], @b[4]
+___
+}
+
+sub Mul_GF4 {
+#;*************************************************************
+#;* Mul_GF4: Input x0-x1,y0-y1 Output x0-x1 Temp t0 (8) *
+#;*************************************************************
+my ($x0,$x1,$y0,$y1,$t0)=@_;
+$code.=<<___;
+ movdqa $y0, $t0
+ pxor $y1, $t0
+ pand $x0, $t0
+ pxor $x1, $x0
+ pand $y0, $x1
+ pand $y1, $x0
+ pxor $x1, $x0
+ pxor $t0, $x1
+___
+}
+
+sub Mul_GF4_N { # not used, see next subroutine
+# multiply and scale by N
+my ($x0,$x1,$y0,$y1,$t0)=@_;
+$code.=<<___;
+ movdqa $y0, $t0
+ pxor $y1, $t0
+ pand $x0, $t0
+ pxor $x1, $x0
+ pand $y0, $x1
+ pand $y1, $x0
+ pxor $x0, $x1
+ pxor $t0, $x0
+___
+}
+
+sub Mul_GF4_N_GF4 {
+# interleaved Mul_GF4_N and Mul_GF4
+my ($x0,$x1,$y0,$y1,$t0,
+ $x2,$x3,$y2,$y3,$t1)=@_;
+$code.=<<___;
+ movdqa $y0, $t0
+ movdqa $y2, $t1
+ pxor $y1, $t0
+ pxor $y3, $t1
+ pand $x0, $t0
+ pand $x2, $t1
+ pxor $x1, $x0
+ pxor $x3, $x2
+ pand $y0, $x1
+ pand $y2, $x3
+ pand $y1, $x0
+ pand $y3, $x2
+ pxor $x0, $x1
+ pxor $x3, $x2
+ pxor $t0, $x0
+ pxor $t1, $x3
+___
+}
+sub Mul_GF16_2 {
+my @x=@_[0..7];
+my @y=@_[8..11];
+my @t=@_[12..15];
+$code.=<<___;
+ movdqa @x[0], @t[0]
+ movdqa @x[1], @t[1]
+___
+ &Mul_GF4 (@x[0], @x[1], @y[0], @y[1], @t[2]);
+$code.=<<___;
+ pxor @x[2], @t[0]
+ pxor @x[3], @t[1]
+ pxor @y[2], @y[0]
+ pxor @y[3], @y[1]
+___
+ Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3],
+ @x[2], @x[3], @y[2], @y[3], @t[2]);
+$code.=<<___;
+ pxor @t[0], @x[0]
+ pxor @t[0], @x[2]
+ pxor @t[1], @x[1]
+ pxor @t[1], @x[3]
+
+ movdqa @x[4], @t[0]
+ movdqa @x[5], @t[1]
+ pxor @x[6], @t[0]
+ pxor @x[7], @t[1]
+___
+ &Mul_GF4_N_GF4 (@t[0], @t[1], @y[0], @y[1], @t[3],
+ @x[6], @x[7], @y[2], @y[3], @t[2]);
+$code.=<<___;
+ pxor @y[2], @y[0]
+ pxor @y[3], @y[1]
+___
+ &Mul_GF4 (@x[4], @x[5], @y[0], @y[1], @t[3]);
+$code.=<<___;
+ pxor @t[0], @x[4]
+ pxor @t[0], @x[6]
+ pxor @t[1], @x[5]
+ pxor @t[1], @x[7]
+___
+}
+sub Inv_GF256 {
+#;********************************************************************
+#;* Inv_GF256: Input x0-x7 Output x0-x7 Temp t0-t3,s0-s3 (144) *
+#;********************************************************************
+my @x=@_[0..7];
+my @t=@_[8..11];
+my @s=@_[12..15];
+# direct optimizations from hardware
+$code.=<<___;
+ movdqa @x[4], @t[3]
+ movdqa @x[5], @t[2]
+ movdqa @x[1], @t[1]
+ movdqa @x[7], @s[1]
+ movdqa @x[0], @s[0]
+
+ pxor @x[6], @t[3]
+ pxor @x[7], @t[2]
+ pxor @x[3], @t[1]
+ movdqa @t[3], @s[2]
+ pxor @x[6], @s[1]
+ movdqa @t[2], @t[0]
+ pxor @x[2], @s[0]
+ movdqa @t[3], @s[3]
+
+ por @t[1], @t[2]
+ por @s[0], @t[3]
+ pxor @t[0], @s[3]
+ pand @s[0], @s[2]
+ pxor @t[1], @s[0]
+ pand @t[1], @t[0]
+ pand @s[0], @s[3]
+ movdqa @x[3], @s[0]
+ pxor @x[2], @s[0]
+ pand @s[0], @s[1]
+ pxor @s[1], @t[3]
+ pxor @s[1], @t[2]
+ movdqa @x[4], @s[1]
+ movdqa @x[1], @s[0]
+ pxor @x[5], @s[1]
+ pxor @x[0], @s[0]
+ movdqa @s[1], @t[1]
+ pand @s[0], @s[1]
+ por @s[0], @t[1]
+ pxor @s[1], @t[0]
+ pxor @s[3], @t[3]
+ pxor @s[2], @t[2]
+ pxor @s[3], @t[1]
+ movdqa @x[7], @s[0]
+ pxor @s[2], @t[0]
+ movdqa @x[6], @s[1]
+ pxor @s[2], @t[1]
+ movdqa @x[5], @s[2]
+ pand @x[3], @s[0]
+ movdqa @x[4], @s[3]
+ pand @x[2], @s[1]
+ pand @x[1], @s[2]
+ por @x[0], @s[3]
+ pxor @s[0], @t[3]
+ pxor @s[1], @t[2]
+ pxor @s[2], @t[1]
+ pxor @s[3], @t[0]
+
+ #Inv_GF16 \t0, \t1, \t2, \t3, \s0, \s1, \s2, \s3
+
+ # new smaller inversion
+
+ movdqa @t[3], @s[0]
+ pand @t[1], @t[3]
+ pxor @t[2], @s[0]
+
+ movdqa @t[0], @s[2]
+ movdqa @s[0], @s[3]
+ pxor @t[3], @s[2]
+ pand @s[2], @s[3]
+
+ movdqa @t[1], @s[1]
+ pxor @t[2], @s[3]
+ pxor @t[0], @s[1]
+
+ pxor @t[2], @t[3]
+
+ pand @t[3], @s[1]
+
+ movdqa @s[2], @t[2]
+ pxor @t[0], @s[1]
+
+ pxor @s[1], @t[2]
+ pxor @s[1], @t[1]
+
+ pand @t[0], @t[2]
+
+ pxor @t[2], @s[2]
+ pxor @t[2], @t[1]
+
+ pand @s[3], @s[2]
+
+ pxor @s[0], @s[2]
+___
+# output in s3, s2, s1, t1
+
+# Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \t2, \t3, \t0, \t1, \s0, \s1, \s2, \s3
+
+# Mul_GF16_2 \x0, \x1, \x2, \x3, \x4, \x5, \x6, \x7, \s3, \s2, \s1, \t1, \s0, \t0, \t2, \t3
+ &Mul_GF16_2(@x,@s[3,2,1],@t[1],@s[0],@t[0,2,3]);
+
+### output msb > [x3,x2,x1,x0,x7,x6,x5,x4] < lsb
+}
+
+# AES linear components
+
+sub shiftrows {
+my @x=@_[0..7];
+my $mask=pop;
+$code.=<<___;
+ pxor 0x00($key),@x[0]
+ pxor 0x10($key),@x[1]
+ pshufb $mask,@x[0]
+ pxor 0x20($key),@x[2]
+ pshufb $mask,@x[1]
+ pxor 0x30($key),@x[3]
+ pshufb $mask,@x[2]
+ pxor 0x40($key),@x[4]
+ pshufb $mask,@x[3]
+ pxor 0x50($key),@x[5]
+ pshufb $mask,@x[4]
+ pxor 0x60($key),@x[6]
+ pshufb $mask,@x[5]
+ pxor 0x70($key),@x[7]
+ pshufb $mask,@x[6]
+ lea 0x80($key),$key
+ pshufb $mask,@x[7]
+___
+}
+
+sub mixcolumns {
+# modified to emit output in order suitable for feeding back to aesenc[last]
+my @x=@_[0..7];
+my @t=@_[8..15];
+$code.=<<___;
+ pshufd \$0x93, @x[0], @t[0] # x0 <<< 32
+ pshufd \$0x93, @x[1], @t[1]
+ pxor @t[0], @x[0] # x0 ^ (x0 <<< 32)
+ pshufd \$0x93, @x[2], @t[2]
+ pxor @t[1], @x[1]
+ pshufd \$0x93, @x[3], @t[3]
+ pxor @t[2], @x[2]
+ pshufd \$0x93, @x[4], @t[4]
+ pxor @t[3], @x[3]
+ pshufd \$0x93, @x[5], @t[5]
+ pxor @t[4], @x[4]
+ pshufd \$0x93, @x[6], @t[6]
+ pxor @t[5], @x[5]
+ pshufd \$0x93, @x[7], @t[7]
+ pxor @t[6], @x[6]
+ pxor @t[7], @x[7]
+
+ pxor @x[0], @t[1]
+ pxor @x[7], @t[0]
+ pxor @x[7], @t[1]
+ pshufd \$0x4E, @x[0], @x[0] # (x0 ^ (x0 <<< 32)) <<< 64)
+ pxor @x[1], @t[2]
+ pshufd \$0x4E, @x[1], @x[1]
+ pxor @x[4], @t[5]
+ pxor @t[0], @x[0]
+ pxor @x[5], @t[6]
+ pxor @t[1], @x[1]
+ pxor @x[3], @t[4]
+ pshufd \$0x4E, @x[4], @t[0]
+ pxor @x[6], @t[7]
+ pshufd \$0x4E, @x[5], @t[1]
+ pxor @x[2], @t[3]
+ pshufd \$0x4E, @x[3], @x[4]
+ pxor @x[7], @t[3]
+ pshufd \$0x4E, @x[7], @x[5]
+ pxor @x[7], @t[4]
+ pshufd \$0x4E, @x[6], @x[3]
+ pxor @t[4], @t[0]
+ pshufd \$0x4E, @x[2], @x[6]
+ pxor @t[5], @t[1]
+
+ pxor @t[3], @x[4]
+ pxor @t[7], @x[5]
+ pxor @t[6], @x[3]
+ movdqa @t[0], @x[2]
+ pxor @t[2], @x[6]
+ movdqa @t[1], @x[7]
+___
+}
+
+sub aesenc { # not used
+my @b=@_[0..7];
+my @t=@_[8..15];
+$code.=<<___;
+ movdqa 0x30($const),@t[0] # .LSR
+___
+ &shiftrows (@b,@t[0]);
+ &sbox (@b,@t);
+ &mixcolumns (@b[0,1,4,6,3,7,2,5],@t);
+}
+
+sub aesenclast { # not used
+my @b=@_[0..7];
+my @t=@_[8..15];
+$code.=<<___;
+ movdqa 0x40($const),@t[0] # .LSRM0
+___
+ &shiftrows (@b,@t[0]);
+ &sbox (@b,@t);
+$code.=<<___
+ pxor 0x00($key),@b[0]
+ pxor 0x10($key),@b[1]
+ pxor 0x20($key),@b[4]
+ pxor 0x30($key),@b[6]
+ pxor 0x40($key),@b[3]
+ pxor 0x50($key),@b[7]
+ pxor 0x60($key),@b[2]
+ pxor 0x70($key),@b[5]
+___
+}
+
+sub swapmove {
+my ($a,$b,$n,$mask,$t)=@_;
+$code.=<<___;
+ movdqa $b,$t
+ psrlq \$$n,$b
+ pxor $a,$b
+ pand $mask,$b
+ pxor $b,$a
+ psllq \$$n,$b
+ pxor $t,$b
+___
+}
+sub swapmove2x {
+my ($a0,$b0,$a1,$b1,$n,$mask,$t0,$t1)=@_;
+$code.=<<___;
+ movdqa $b0,$t0
+ psrlq \$$n,$b0
+ movdqa $b1,$t1
+ psrlq \$$n,$b1
+ pxor $a0,$b0
+ pxor $a1,$b1
+ pand $mask,$b0
+ pand $mask,$b1
+ pxor $b0,$a0
+ psllq \$$n,$b0
+ pxor $b1,$a1
+ psllq \$$n,$b1
+ pxor $t0,$b0
+ pxor $t1,$b1
+___
+}
+
+sub bitslice {
+my @x=reverse(@_[0..7]);
+my ($t0,$t1,$t2,$t3)=@_[8..11];
+$code.=<<___;
+ movdqa 0x00($const),$t0 # .LBS0
+ movdqa 0x10($const),$t1 # .LBS1
+___
+ &swapmove2x(@x[0,1,2,3],1,$t0,$t2,$t3);
+ &swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3);
+$code.=<<___;
+ movdqa 0x20($const),$t0 # .LBS2
+___
+ &swapmove2x(@x[0,2,1,3],2,$t1,$t2,$t3);
+ &swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3);
+
+ &swapmove2x(@x[0,4,1,5],4,$t0,$t2,$t3);
+ &swapmove2x(@x[2,6,3,7],4,$t0,$t2,$t3);
+}
+
+$code.=<<___;
+.text
+
+.extern AES_encrypt
+
+.type _bsaes_encrypt8,\@abi-omnipotent
+.align 64
+_bsaes_encrypt8:
+ lea .LBS0(%rip), $const # constants table
+
+ movdqa ($key), @XMM[9] # round 0 key
+ lea 0x10($key), $key
+ movdqa 0x60($const), @XMM[8] # .LM0SR
+ pxor @XMM[9], @XMM[0] # xor with round0 key
+ pxor @XMM[9], @XMM[1]
+ pshufb @XMM[8], @XMM[0]
+ pxor @XMM[9], @XMM[2]
+ pshufb @XMM[8], @XMM[1]
+ pxor @XMM[9], @XMM[3]
+ pshufb @XMM[8], @XMM[2]
+ pxor @XMM[9], @XMM[4]
+ pshufb @XMM[8], @XMM[3]
+ pxor @XMM[9], @XMM[5]
+ pshufb @XMM[8], @XMM[4]
+ pxor @XMM[9], @XMM[6]
+ pshufb @XMM[8], @XMM[5]
+ pxor @XMM[9], @XMM[7]
+ pshufb @XMM[8], @XMM[6]
+ pshufb @XMM[8], @XMM[7]
+_bsaes_encrypt8_bitslice:
+___
+ &bitslice (@XMM[0..7, 8..11]);
+$code.=<<___;
+ dec $rounds
+ jmp .Lenc_sbox
+.align 16
+.Lenc_loop:
+___
+ &shiftrows (@XMM[0..7, 8]);
+$code.=".Lenc_sbox:\n";
+ &sbox (@XMM[0..7, 8..15]);
+$code.=<<___;
+ dec $rounds
+ jl .Lenc_done
+___
+ &mixcolumns (@XMM[0,1,4,6,3,7,2,5, 8..15]);
+$code.=<<___;
+ movdqa 0x30($const), @XMM[8] # .LSR
+ jnz .Lenc_loop
+ movdqa 0x40($const), @XMM[8] # .LSRM0
+ jmp .Lenc_loop
+.align 16
+.Lenc_done:
+___
+ # output in lsb > [t0, t1, t4, t6, t3, t7, t2, t5] < msb
+ &bitslice (@XMM[0,1,4,6,3,7,2,5, 8..11]);
+$code.=<<___;
+ movdqa ($key), @XMM[8] # last round key
+ pxor @XMM[8], @XMM[0]
+ pxor @XMM[8], @XMM[1]
+ pxor @XMM[8], @XMM[4]
+ pxor @XMM[8], @XMM[6]
+ pxor @XMM[8], @XMM[3]
+ pxor @XMM[8], @XMM[7]
+ pxor @XMM[8], @XMM[2]
+ pxor @XMM[8], @XMM[5]
+ ret
+.size _bsaes_encrypt8,.-_bsaes_encrypt8
+___
+}
+{
+my ($out,$inp,$rounds,$const)=("%rax","%rcx","%r10d","%r11");
+
+sub bitslice_key {
+my @x=reverse(@_[0..7]);
+my ($bs0,$bs1,$bs2,$t2,$t3)=@_[8..12];
+
+ &swapmove (@x[0,1],1,$bs0,$t2,$t3);
+$code.=<<___;
+ #&swapmove(@x[2,3],1,$t0,$t2,$t3);
+ movdqa @x[0], @x[2]
+ movdqa @x[1], @x[3]
+___
+ #&swapmove2x(@x[4,5,6,7],1,$t0,$t2,$t3);
+
+ &swapmove2x (@x[0,2,1,3],2,$bs1,$t2,$t3);
+$code.=<<___;
+ #&swapmove2x(@x[4,6,5,7],2,$t1,$t2,$t3);
+ movdqa @x[0], @x[4]
+ movdqa @x[2], @x[6]
+ movdqa @x[1], @x[5]
+ movdqa @x[3], @x[7]
+___
+ &swapmove2x (@x[0,4,1,5],4,$bs2,$t2,$t3);
+ &swapmove2x (@x[2,6,3,7],4,$bs2,$t2,$t3);
+}
+
+$code.=<<___;
+.type _bsaes_enc_key_convert,\@abi-omnipotent
+.align 16
+_bsaes_enc_key_convert:
+ lea .LBS1(%rip), $const
+ movdqu ($inp), %xmm7 # load round 0 key
+ movdqa -0x10($const), %xmm8 # .LBS0
+ movdqa 0x00($const), %xmm9 # .LBS1
+ movdqa 0x10($const), %xmm10 # .LBS2
+ movdqa 0x40($const), %xmm13 # .LM0
+ movdqa 0x60($const),%xmm14 # .LNOT
+
+ movdqu 0x10($inp), %xmm6 # load round 1 key
+ lea 0x10($inp), $inp
+ movdqa %xmm7, ($out) # save round 0 key
+ lea 0x10($out), $out
+ dec $rounds
+ jmp .Lkey_loop
+.align 16
+.Lkey_loop:
+ pshufb %xmm13, %xmm6
+ movdqa %xmm6, %xmm7
+___
+ &bitslice_key (map("%xmm$_",(0..7, 8..12)));
+$code.=<<___;
+ pxor %xmm14, %xmm5 # "pnot"
+ pxor %xmm14, %xmm6
+ pxor %xmm14, %xmm0
+ pxor %xmm14, %xmm1
+ lea 0x10($inp), $inp
+ movdqa %xmm0, 0x00($out) # write bit-sliced round key
+ movdqa %xmm1, 0x10($out)
+ movdqa %xmm2, 0x20($out)
+ movdqa %xmm3, 0x30($out)
+ movdqa %xmm4, 0x40($out)
+ movdqa %xmm5, 0x50($out)
+ movdqa %xmm6, 0x60($out)
+ movdqa %xmm7, 0x70($out)
+ lea 0x80($out),$out
+ movdqu ($inp), %xmm6 # load next round key
+ dec $rounds
+ jnz .Lkey_loop
+
+ pxor 0x70($const), %xmm6 # .L63
+ movdqa %xmm6, ($out) # save last round key
+ ret
+.size _bsaes_enc_key_convert,.-_bsaes_enc_key_convert
+___
+}
+
+if (1) { # following two functions are unsupported interface
+ # used for benchmarking...
+$code.=<<___;
+.globl bsaes_enc_key_convert
+.type bsaes_enc_key_convert,\@function,2
+.align 16
+bsaes_enc_key_convert:
+ mov 240($inp),%r10d # pass rounds
+ mov $inp,%rcx # pass key
+ mov $out,%rax # pass key schedule
+ call _bsaes_enc_key_convert
+ ret
+.size bsaes_enc_key_convert,.-bsaes_enc_key_convert
+
+.globl bsaes_encrypt_128
+.type bsaes_encrypt_128,\@function,4
+.align 16
+bsaes_encrypt_128:
+.Lenc128_loop:
+ movdqu 0x00($inp), @XMM[0] # load input
+ movdqu 0x10($inp), @XMM[1]
+ movdqu 0x20($inp), @XMM[2]
+ movdqu 0x30($inp), @XMM[3]
+ movdqu 0x40($inp), @XMM[4]
+ movdqu 0x50($inp), @XMM[5]
+ movdqu 0x60($inp), @XMM[6]
+ movdqu 0x70($inp), @XMM[7]
+ mov $key, %rax # pass the $key
+ lea 0x80($inp), $inp
+ mov \$10,%r10d
+
+ call _bsaes_encrypt8
+
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ movdqu @XMM[6], 0x30($out)
+ movdqu @XMM[3], 0x40($out)
+ movdqu @XMM[7], 0x50($out)
+ movdqu @XMM[2], 0x60($out)
+ movdqu @XMM[5], 0x70($out)
+ lea 0x80($out), $out
+ sub \$0x80,$len
+ ja .Lenc128_loop
+ ret
+.size bsaes_encrypt_128,.-bsaes_encrypt_128
+___
+}
+{
+######################################################################
+#
+# OpenSSL interface
+#
+my ($arg1,$arg2,$arg3,$arg4,$arg5) = $win64 ? ("%rcx","%rdx","%r8","%r9","%r10")
+ : ("%rdi","%rsi","%rdx","%rcx","%r8");
+my ($inp,$out,$len,$key)=("%r12","%r13","%r14","%r15");
+
+$code.=<<___;
+.globl bsaes_ecb_encrypt_blocks
+.type bsaes_ecb_encrypt_blocks,\@abi-omnipotent
+.align 16
+bsaes_ecb_encrypt_blocks:
+ push %rbp
+ push %rbx
+ push %r12
+ push %r13
+ push %r14
+ push %r15
+ lea -0x48(%rsp),%rsp
+___
+$code.=<<___ if ($win64);
+ lea -0xa0(%rsp), %rsp
+ movaps %xmm6, 0x40(%rsp)
+ movaps %xmm7, 0x50(%rsp)
+ movaps %xmm8, 0x60(%rsp)
+ movaps %xmm9, 0x70(%rsp)
+ movaps %xmm10, 0x80(%rsp)
+ movaps %xmm11, 0x90(%rsp)
+ movaps %xmm12, 0xa0(%rsp)
+ movaps %xmm13, 0xb0(%rsp)
+ movaps %xmm14, 0xc0(%rsp)
+ movaps %xmm15, 0xd0(%rsp)
+.Lecb_enc_body:
+___
+$code.=<<___;
+ mov %rsp,%rbp # backup %rsp
+ mov 240($arg4),%eax # rounds
+ mov $arg1,$inp # backup arguments
+ mov $arg2,$out
+ mov $arg3,$len
+ mov $arg4,$key
+ cmp \$8,$arg3
+ jb .Lecb_enc_short
+
+ mov %eax,%ebx # backup rounds
+ shl \$7,%rax # 128 bytes per inner round key
+ sub \$`128-32`,%rax # size of bit-sliced key schedule
+ sub %rax,%rsp
+ mov %rsp,%rax # pass key schedule
+ mov $key,%rcx # pass key
+ mov %ebx,%r10d # pass rounds
+ call _bsaes_enc_key_convert
+
+ sub \$8,$len
+.Lecb_enc_loop:
+ movdqu 0x00($inp), @XMM[0] # load input
+ movdqu 0x10($inp), @XMM[1]
+ movdqu 0x20($inp), @XMM[2]
+ movdqu 0x30($inp), @XMM[3]
+ movdqu 0x40($inp), @XMM[4]
+ movdqu 0x50($inp), @XMM[5]
+ mov %rsp, %rax # pass key schedule
+ movdqu 0x60($inp), @XMM[6]
+ mov %ebx,%r10d # pass rounds
+ movdqu 0x70($inp), @XMM[7]
+ lea 0x80($inp), $inp
+
+ call _bsaes_encrypt8
+
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ movdqu @XMM[6], 0x30($out)
+ movdqu @XMM[3], 0x40($out)
+ movdqu @XMM[7], 0x50($out)
+ movdqu @XMM[2], 0x60($out)
+ movdqu @XMM[5], 0x70($out)
+ lea 0x80($out), $out
+ sub \$8,$len
+ jnc .Lecb_enc_loop
+
+ add \$8,$len
+ jz .Lecb_enc_done
+
+ movdqu 0x00($inp), @XMM[0] # load input
+ mov %rsp, %rax # pass key schedule
+ mov %ebx,%r10d # pass rounds
+ cmp \$2,$len
+ jb .Lecb_enc_one
+ movdqu 0x10($inp), @XMM[1]
+ je .Lecb_enc_two
+ movdqu 0x20($inp), @XMM[2]
+ cmp \$4,$len
+ jb .Lecb_enc_three
+ movdqu 0x30($inp), @XMM[3]
+ je .Lecb_enc_four
+ movdqu 0x40($inp), @XMM[4]
+ cmp \$6,$len
+ jb .Lecb_enc_five
+ movdqu 0x50($inp), @XMM[5]
+ je .Lecb_enc_six
+ movdqu 0x60($inp), @XMM[6]
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ movdqu @XMM[6], 0x30($out)
+ movdqu @XMM[3], 0x40($out)
+ movdqu @XMM[7], 0x50($out)
+ movdqu @XMM[2], 0x60($out)
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_six:
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ movdqu @XMM[6], 0x30($out)
+ movdqu @XMM[3], 0x40($out)
+ movdqu @XMM[7], 0x50($out)
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_five:
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ movdqu @XMM[6], 0x30($out)
+ movdqu @XMM[3], 0x40($out)
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_four:
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ movdqu @XMM[6], 0x30($out)
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_three:
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ movdqu @XMM[4], 0x20($out)
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_two:
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ movdqu @XMM[1], 0x10($out)
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_one:
+ call _bsaes_encrypt8
+ movdqu @XMM[0], 0x00($out) # write output
+ jmp .Lecb_enc_done
+.align 16
+.Lecb_enc_short:
+ lea ($inp), $arg1
+ lea ($out), $arg2
+ lea ($key), $arg3
+ call AES_encrypt
+ lea 16($inp), $inp
+ lea 16($out), $out
+ dec $len
+ jnz .Lecb_enc_short
+
+.Lecb_enc_done:
+ lea (%rsp),%rax
+ pxor %xmm0, %xmm0
+.Lecb_enc_bzero: # wipe key schedule [if any]
+ movdqa %xmm0, 0x00(%rax)
+ movdqa %xmm0, 0x10(%rax)
+ lea 0x20(%rax), %rax
+ cmp %rax, %rbp
+ jb .Lecb_enc_bzero
+
+ lea (%rbp),%rsp # restore %rsp
+___
+$code.=<<___ if ($win64);
+ movaps 0x40(%rbp), %xmm6
+ movaps 0x50(%rbp), %xmm7
+ movaps 0x60(%rbp), %xmm8
+ movaps 0x70(%rbp), %xmm9
+ movaps 0x80(%rbp), %xmm10
+ movaps 0x90(%rbp), %xmm11
+ movaps 0xa0(%rbp), %xmm12
+ movaps 0xb0(%rbp), %xmm13
+ movaps 0xc0(%rbp), %xmm14
+ movaps 0xd0(%rbp), %xmm15
+ lea 0xa0(%rbp), %rsp
+___
+$code.=<<___;
+ mov 0x48(%rsp), %r15
+ mov 0x50(%rsp), %r14
+ mov 0x58(%rsp), %r13
+ mov 0x60(%rsp), %r12
+ mov 0x68(%rsp), %rbx
+ mov 0x70(%rsp), %rbp
+ lea 0x78(%rsp), %rsp
+.Lecb_enc_epilogue:
+ ret
+.size bsaes_ecb_encrypt_blocks,.-bsaes_ecb_encrypt_blocks
+
+.globl bsaes_ctr32_encrypt_blocks
+.type bsaes_ctr32_encrypt_blocks,\@abi-omnipotent
+.align 16
+bsaes_ctr32_encrypt_blocks:
+ push %rbp
+ push %rbx
+ push %r12
+ push %r13
+ push %r14
+ push %r15
+ lea -0x48(%rsp), %rsp
+___
+$code.=<<___ if ($win64);
+ mov 0xa0(%rsp),$arg5 # pull ivp
+ lea -0xa0(%rsp), %rsp
+ movaps %xmm6, 0x40(%rsp)
+ movaps %xmm7, 0x50(%rsp)
+ movaps %xmm8, 0x60(%rsp)
+ movaps %xmm9, 0x70(%rsp)
+ movaps %xmm10, 0x80(%rsp)
+ movaps %xmm11, 0x90(%rsp)
+ movaps %xmm12, 0xa0(%rsp)
+ movaps %xmm13, 0xb0(%rsp)
+ movaps %xmm14, 0xc0(%rsp)
+ movaps %xmm15, 0xd0(%rsp)
+.Lctr_enc_body:
+___
+$code.=<<___;
+ mov %rsp, %rbp # backup %rsp
+ movdqu ($arg5), %xmm0 # load counter
+ mov 240($arg4), %eax # rounds
+ mov $arg1, $inp # backup arguments
+ mov $arg2, $out
+ mov $arg3, $len
+ mov $arg4, $key
+ movdqa %xmm0, 0x20(%rbp) # copy counter
+ cmp \$8, $arg3
+ jb .Lctr_enc_short
+
+ mov %eax, %ebx # rounds
+ shl \$7, %rax # 128 bytes per inner round key
+ sub \$`128-32`, %rax # size of bit-sliced key schedule
+ sub %rax, %rsp
+
+ mov %rsp, %rax # pass key schedule
+ mov $key, %rcx # pass key
+ mov %ebx, %r10d # pass rounds
+ call _bsaes_enc_key_convert
+
+ movdqa (%rsp), @XMM[9] # load round0 key
+ lea .LADD1(%rip), %r11
+ movdqa 0x20(%rbp), @XMM[0] # counter copy
+ movdqa -0x20(%r11), @XMM[8] # .LSWPUP
+ pshufb @XMM[8], @XMM[9] # byte swap upper part
+ pshufb @XMM[8], @XMM[0]
+ movdqa @XMM[9], (%rsp) # save adjusted round0 key
+ jmp .Lctr_enc_loop
+.align 16
+.Lctr_enc_loop:
+ movdqa @XMM[0], 0x20(%rbp) # save counter
+ movdqa @XMM[0], @XMM[1] # prepare 8 counter values
+ movdqa @XMM[0], @XMM[2]
+ paddd 0x00(%r11), @XMM[1] # .LADD1
+ movdqa @XMM[0], @XMM[3]
+ paddd 0x10(%r11), @XMM[2] # .LADD2
+ movdqa @XMM[0], @XMM[4]
+ paddd 0x20(%r11), @XMM[3] # .LADD3
+ movdqa @XMM[0], @XMM[5]
+ paddd 0x30(%r11), @XMM[4] # .LADD4
+ movdqa @XMM[0], @XMM[6]
+ paddd 0x40(%r11), @XMM[5] # .LADD5
+ movdqa @XMM[0], @XMM[7]
+ paddd 0x50(%r11), @XMM[6] # .LADD6
+ paddd 0x60(%r11), @XMM[7] # .LADD7
+
+ # Borrow prologue from _bsaes_encrypt8 to use the opportunity
+ # to flip byte order in 32-bit counter
+ movdqa (%rsp), @XMM[9] # round 0 key
+ lea 0x10(%rsp), %rax # pass key schedule
+ movdqa -0x10(%r11), @XMM[8] # .LSWPUPM0SR
+ pxor @XMM[9], @XMM[0] # xor with round0 key
+ pxor @XMM[9], @XMM[1]
+ pshufb @XMM[8], @XMM[0]
+ pxor @XMM[9], @XMM[2]
+ pshufb @XMM[8], @XMM[1]
+ pxor @XMM[9], @XMM[3]
+ pshufb @XMM[8], @XMM[2]
+ pxor @XMM[9], @XMM[4]
+ pshufb @XMM[8], @XMM[3]
+ pxor @XMM[9], @XMM[5]
+ pshufb @XMM[8], @XMM[4]
+ pxor @XMM[9], @XMM[6]
+ pshufb @XMM[8], @XMM[5]
+ pxor @XMM[9], @XMM[7]
+ pshufb @XMM[8], @XMM[6]
+ lea .LBS0(%rip), %r11 # constants table
+ pshufb @XMM[8], @XMM[7]
+ mov %ebx,%r10d # pass rounds
+
+ call _bsaes_encrypt8_bitslice
+
+ sub \$8,$len
+ jc .Lctr_enc_loop_done
+
+ movdqu 0x00($inp), @XMM[8] # load input
+ movdqu 0x10($inp), @XMM[9]
+ movdqu 0x20($inp), @XMM[10]
+ movdqu 0x30($inp), @XMM[11]
+ movdqu 0x40($inp), @XMM[12]
+ movdqu 0x50($inp), @XMM[13]
+ movdqu 0x60($inp), @XMM[14]
+ movdqu 0x70($inp), @XMM[15]
+ lea 0x80($inp),$inp
+ pxor @XMM[0], @XMM[8]
+ movdqa 0x20(%rbp), @XMM[0] # load counter
+ pxor @XMM[9], @XMM[1]
+ movdqu @XMM[8], 0x00($out) # write output
+ pxor @XMM[10], @XMM[4]
+ movdqu @XMM[1], 0x10($out)
+ pxor @XMM[11], @XMM[6]
+ movdqu @XMM[4], 0x20($out)
+ pxor @XMM[12], @XMM[3]
+ movdqu @XMM[6], 0x30($out)
+ pxor @XMM[13], @XMM[7]
+ movdqu @XMM[3], 0x40($out)
+ pxor @XMM[14], @XMM[2]
+ movdqu @XMM[7], 0x50($out)
+ pxor @XMM[15], @XMM[5]
+ movdqu @XMM[2], 0x60($out)
+ lea .LADD1(%rip), %r11
+ movdqu @XMM[5], 0x70($out)
+ lea 0x80($out), $out
+ paddd 0x70(%r11), @XMM[0] # .LADD8
+ jnz .Lctr_enc_loop
+
+ jmp .Lctr_enc_done
+.align 16
+.Lctr_enc_loop_done:
+ movdqu 0x00($inp), @XMM[8] # load input
+ pxor @XMM[8], @XMM[0]
+ movdqu @XMM[0], 0x00($out) # write output
+ cmp \$2,$len
+ jb .Lctr_enc_done
+ movdqu 0x10($inp), @XMM[9]
+ pxor @XMM[9], @XMM[1]
+ movdqu @XMM[1], 0x10($out)
+ je .Lctr_enc_done
+ movdqu 0x20($inp), @XMM[10]
+ pxor @XMM[10], @XMM[4]
+ movdqu @XMM[4], 0x20($out)
+ cmp \$4,$len
+ jb .Lctr_enc_done
+ movdqu 0x30($inp), @XMM[11]
+ pxor @XMM[11], @XMM[6]
+ movdqu @XMM[6], 0x30($out)
+ je .Lctr_enc_done
+ movdqu 0x40($inp), @XMM[12]
+ pxor @XMM[12], @XMM[3]
+ movdqu @XMM[3], 0x40($out)
+ cmp \$6,$len
+ jb .Lctr_enc_done
+ movdqu 0x50($inp), @XMM[13]
+ pxor @XMM[13], @XMM[7]
+ movdqu @XMM[7], 0x50($out)
+ je .Lctr_enc_done
+ movdqu 0x60($inp), @XMM[14]
+ pxor @XMM[14], @XMM[2]
+ movdqu @XMM[2], 0x60($out)
+ jmp .Lctr_enc_done
+
+.align 16
+.Lctr_enc_short:
+ lea 0x20(%rbp), $arg1
+ lea 0x30(%rbp), $arg2
+ lea ($key), $arg3
+ call AES_encrypt
+ movdqu ($inp), @XMM[1]
+ lea 16($inp), $inp
+ mov 0x2c(%rbp), %eax # load 32-bit counter
+ bswap %eax
+ pxor 0x30(%rbp), @XMM[1]
+ inc %eax # increment
+ movdqu @XMM[1], ($out)
+ bswap %eax
+ lea 16($out), $out
+ mov %eax, 0x2c(%rsp) # save 32-bit counter
+ dec $len
+ jnz .Lctr_enc_short
+
+.Lctr_enc_done:
+ lea (%rsp), %rax
+ pxor %xmm0, %xmm0
+.Lctr_enc_bzero: # wipe key schedule [if any]
+ movdqa %xmm0, 0x00(%rax)
+ movdqa %xmm0, 0x10(%rax)
+ lea 0x20(%rax), %rax
+ cmp %rax, %rbp
+ ja .Lctr_enc_bzero
+
+ lea (%rbp),%rsp # restore %rsp
+___
+$code.=<<___ if ($win64);
+ movaps 0x40(%rbp), %xmm6
+ movaps 0x50(%rbp), %xmm7
+ movaps 0x60(%rbp), %xmm8
+ movaps 0x70(%rbp), %xmm9
+ movaps 0x80(%rbp), %xmm10
+ movaps 0x90(%rbp), %xmm11
+ movaps 0xa0(%rbp), %xmm12
+ movaps 0xb0(%rbp), %xmm13
+ movaps 0xc0(%rbp), %xmm14
+ movaps 0xd0(%rbp), %xmm15
+ lea 0xa0(%rbp), %rsp
+___
+$code.=<<___;
+ mov 0x48(%rsp), %r15
+ mov 0x50(%rsp), %r14
+ mov 0x58(%rsp), %r13
+ mov 0x60(%rsp), %r12
+ mov 0x68(%rsp), %rbx
+ mov 0x70(%rsp), %rbp
+ lea 0x78(%rsp), %rsp
+.Lctr_enc_epilogue:
+ ret
+.size bsaes_ctr32_encrypt_blocks,.-bsaes_ctr32_encrypt_blocks
+___
+}
+$code.=<<___;
+.align 64
+.LBS0: .quad 0x5555555555555555, 0x5555555555555555
+.LBS1: .quad 0x3333333333333333, 0x3333333333333333
+.LBS2: .quad 0x0f0f0f0f0f0f0f0f, 0x0f0f0f0f0f0f0f0f
+.LSR: .quad 0x0504070600030201, 0x0f0e0d0c0a09080b
+.LSRM0: .quad 0x0304090e00050a0f, 0x01060b0c0207080d
+.LM0: .quad 0x02060a0e03070b0f, 0x0004080c0105090d
+.LM0SR: .quad 0x0a0e02060f03070b, 0x0004080c05090d01
+.LNOT: .quad 0xffffffffffffffff, 0xffffffffffffffff
+.L63: .quad 0x6363636363636363, 0x6363636363636363
+.LSWPUP:
+ .quad 0x0706050403020100, 0x0c0d0e0f0b0a0908
+.LSWPUPM0SR:
+ .quad 0x0a0d02060c03070b, 0x0004080f05090e01
+.LADD1: .quad 0x0000000000000000, 0x0000000100000000
+.LADD2: .quad 0x0000000000000000, 0x0000000200000000
+.LADD3: .quad 0x0000000000000000, 0x0000000300000000
+.LADD4: .quad 0x0000000000000000, 0x0000000400000000
+.LADD5: .quad 0x0000000000000000, 0x0000000500000000
+.LADD6: .quad 0x0000000000000000, 0x0000000600000000
+.LADD7: .quad 0x0000000000000000, 0x0000000700000000
+.LADD8: .quad 0x0000000000000000, 0x0000000800000000
+.asciz "Bit-sliced AES for x86_64, Emilia Käsper"
+.align 64
+___
+
+$code =~ s/\`([^\`]*)\`/eval($1)/gem;
+
+print $code;
+
+close STDOUT;
projects / openssl.git / commitdiff