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#!/usr/bin/env perl
#
# ====================================================================
# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
# project. Rights for redistribution and usage in source and binary
# forms are granted according to the OpenSSL license.
# ====================================================================
#
# aes-*-cbc benchmarks are improved by >70% [compared to gcc 3.3.2 on
# Opteron 240 CPU] plus all the bells-n-whistles from 32-bit version
# [you'll notice a lot of resemblance], such as compressed S-boxes
# in little-endian byte order, prefetch of these tables in CBC mode,
# as well as avoiding L1 cache aliasing between stack frame and key
# schedule and already mentioned tables.
# Performance in number of cycles per processed byte for 128-bit key:
#
# ECB CBC encrypt
# AMD64 13.7 13.0(*)
# EM64T 20.2 18.6(*)
#
# (*) CBC benchmarks are better than ECB thanks to custom ABI used
# by the private block encryption function.
$verticalspin=1; # unlike 32-bit version $verticalspin performs
# ~15% better on both AMD and Intel cores
$output=shift;
open STDOUT,"| $^X ../perlasm/x86_64-xlate.pl $output";
$code=".text\n";
$s0="%eax";
$s1="%ebx";
$s2="%ecx";
$s3="%edx";
$acc0="%esi";
$acc1="%edi";
$acc2="%ebp";
$inp="%r8";
$out="%r9";
$t0="%r10d";
$t1="%r11d";
$t2="%r12d";
sub hi() { my $r=shift; $r =~ s/%[er]([a-d])x/%\1h/; $r; }
sub lo() { my $r=shift; $r =~ s/%[er]([a-d])x/%\1l/;
$r =~ s/%[er]([sd]i)/%\1l/;
$r =~ s/%(r[0-9]+)[d]?/%\1b/; $r; }
sub _data_word()
{ my $i;
while(defined($i=shift)) { $code.=sprintf".long\t0x%08x,0x%08x\n",$i,$i; }
}
sub data_word()
{ my $i;
my $last=pop(@_);
$code.=".long\t";
while(defined($i=shift)) { $code.=sprintf"0x%08x,",$i; }
$code.=sprintf"0x%08x\n",$last;
}
sub encvert()
{ my $t3="%r8d"; # zaps $inp!
$code.=<<___;
# favor 3-way issue Opteron pipeline...
movzb `&lo("$s0")`,$acc0
movzb `&lo("$s1")`,$acc1
movzb `&lo("$s2")`,$acc2
mov 0($sbox,$acc0,8),$t0
mov 0($sbox,$acc1,8),$t1
mov 0($sbox,$acc2,8),$t2
movzb `&hi("$s1")`,$acc0
movzb `&hi("$s2")`,$acc1
movzb `&lo("$s3")`,$acc2
xor 3($sbox,$acc0,8),$t0
xor 3($sbox,$acc1,8),$t1
mov 0($sbox,$acc2,8),$t3
movzb `&hi("$s3")`,$acc0
movzb `&hi("$s0")`,$acc2
xor 3($sbox,$acc0,8),$t2
shr \$16,$s3
xor 3($sbox,$acc2,8),$t3
shr \$16,$s1
lea 16($key),$key
shr \$16,$s0
movzb `&lo("$s2")`,$acc0
movzb `&lo("$s3")`,$acc1
movzb `&lo("$s0")`,$acc2
xor 2($sbox,$acc0,8),$t0
xor 2($sbox,$acc1,8),$t1
xor 2($sbox,$acc2,8),$t2
movzb `&hi("$s3")`,$acc0
movzb `&hi("$s0")`,$acc1
movzb `&lo("$s1")`,$acc2
xor 1($sbox,$acc0,8),$t0
xor 1($sbox,$acc1,8),$t1
xor 2($sbox,$acc2,8),$t3
mov 12($key),$s3
movzb `&hi("$s1")`,$acc1
movzb `&hi("$s2")`,$acc2
mov 0($key),$s0
xor 1($sbox,$acc1,8),$t2
xor 1($sbox,$acc2,8),$t3
mov 4($key),$s1
mov 8($key),$s2
xor $t0,$s0
xor $t1,$s1
xor $t2,$s2
xor $t3,$s3
___
}
sub enclastvert()
{ my $t3="%r8d"; # zaps $inp!
$code.=<<___;
movzb `&lo("$s0")`,$acc0
movzb `&lo("$s1")`,$acc1
movzb `&lo("$s2")`,$acc2
mov 2($sbox,$acc0,8),$t0
mov 2($sbox,$acc1,8),$t1
mov 2($sbox,$acc2,8),$t2
and \$0x000000ff,$t0
and \$0x000000ff,$t1
and \$0x000000ff,$t2
movzb `&lo("$s3")`,$acc0
movzb `&hi("$s1")`,$acc1
movzb `&hi("$s2")`,$acc2
mov 2($sbox,$acc0,8),$t3
mov 0($sbox,$acc1,8),$acc1 #$t0
mov 0($sbox,$acc2,8),$acc2 #$t1
and \$0x000000ff,$t3
and \$0x0000ff00,$acc1
and \$0x0000ff00,$acc2
xor $acc1,$t0
xor $acc2,$t1
shr \$16,$s2
movzb `&hi("$s3")`,$acc0
movzb `&hi("$s0")`,$acc1
shr \$16,$s3
mov 0($sbox,$acc0,8),$acc0 #$t2
mov 0($sbox,$acc1,8),$acc1 #$t3
and \$0x0000ff00,$acc0
and \$0x0000ff00,$acc1
shr \$16,$s1
xor $acc0,$t2
xor $acc1,$t3
shr \$16,$s0
movzb `&lo("$s2")`,$acc0
movzb `&lo("$s3")`,$acc1
movzb `&lo("$s0")`,$acc2
mov 0($sbox,$acc0,8),$acc0 #$t0
mov 0($sbox,$acc1,8),$acc1 #$t1
mov 0($sbox,$acc2,8),$acc2 #$t2
and \$0x00ff0000,$acc0
and \$0x00ff0000,$acc1
and \$0x00ff0000,$acc2
xor $acc0,$t0
xor $acc1,$t1
xor $acc2,$t2
movzb `&lo("$s1")`,$acc0
movzb `&hi("$s3")`,$acc1
movzb `&hi("$s0")`,$acc2
mov 0($sbox,$acc0,8),$acc0 #$t3
mov 2($sbox,$acc1,8),$acc1 #$t0
mov 2($sbox,$acc2,8),$acc2 #$t1
and \$0x00ff0000,$acc0
and \$0xff000000,$acc1
and \$0xff000000,$acc2
xor $acc0,$t3
xor $acc1,$t0
xor $acc2,$t1
movzb `&hi("$s1")`,$acc0
movzb `&hi("$s2")`,$acc1
mov 16+12($key),$s3
mov 2($sbox,$acc0,8),$acc0 #$t2
mov 2($sbox,$acc1,8),$acc1 #$t3
mov 16+0($key),$s0
and \$0xff000000,$acc0
and \$0xff000000,$acc1
xor $acc0,$t2
xor $acc1,$t3
mov 16+4($key),$s1
mov 16+8($key),$s2
xor $t0,$s0
xor $t1,$s1
xor $t2,$s2
xor $t3,$s3
___
}
sub encstep()
{ my ($i,@s) = @_;
my $tmp0=$acc0;
my $tmp1=$acc1;
my $tmp2=$acc2;
my $out=($t0,$t1,$t2,$s[0])[$i];
if ($i==3) {
$tmp0=$s[1];
$tmp1=$s[2];
$tmp2=$s[3];
}
$code.=" movzb ".&lo($s[0]).",$out\n";
$code.=" mov $s[2],$tmp1\n" if ($i!=3);
$code.=" lea 16($key),$key\n" if ($i==0);
$code.=" movzb ".&hi($s[1]).",$tmp0\n";
$code.=" mov 0($sbox,$out,8),$out\n";
$code.=" shr \$16,$tmp1\n";
$code.=" mov $s[3],$tmp2\n" if ($i!=3);
$code.=" xor 3($sbox,$tmp0,8),$out\n";
$code.=" movzb ".&lo($tmp1).",$tmp1\n";
$code.=" xor 2($sbox,$tmp1,8),$out\n";
$code.=" xor 1($sbox,$tmp2,8),$out\n";
$code.=" mov $t0,$s[1]\n" if ($i==3);
$code.=" mov $t1,$s[2]\n" if ($i==3);
$code.=" mov $t2,$s[3]\n" if ($i==3);
$code.="\n";
}
sub enclast()
{ my ($i,@s)=@_;
my $tmp0=$acc0;
my $tmp1=$acc1;
my $tmp2=$acc2;
my $out=($t0,$t1,$t2,$s[0])[$i];
if ($i==3) {
$tmp0=$s[1];
$tmp1=$s[2];
$tmp2=$s[3];
}
$code.=" movzb ".&lo($s[0]).",$out\n";
$code.=" mov $s[2],$tmp1\n" if ($i!=3);
$code.=" shr \$16,$tmp1\n";
$code.=" mov $s[3],$tmp2\n" if ($i!=3);
$code.=" and \$0x000000ff,$out\n";
$code.=" movzb ".&hi($s[1]).",$tmp0\n";
$code.=" movzb ".&lo($tmp1).",$tmp1\n";
$code.=" mov 0($sbox,$tmp0,8),$tmp0\n";
$code.=" mov 0($sbox,$tmp1,8),$tmp1\n";
$code.=" mov 2($sbox,$tmp2,8),$tmp2\n";
$code.=" and \$0x0000ff00,$tmp0\n";
$code.=" and \$0x00ff0000,$tmp1\n";
$code.=" and \$0xff000000,$tmp2\n";
$code.=" xor $tmp0,$out\n";
$code.=" mov $t0,$s[1]\n" if ($i==3);
$code.=" xor $tmp1,$out\n";
$code.=" mov $t1,$s[2]\n" if ($i==3);
$code.=" xor $tmp2,$out\n";
$code.=" mov $t2,$s[3]\n" if ($i==3);
$code.="\n";
}
$code.=<<___;
.type _x86_64_AES_encrypt,\@abi-omnipotent
.align 16
_x86_64_AES_encrypt:
xor 0($key),$s0 # xor with key
xor 4($key),$s1
xor 8($key),$s2
xor 12($key),$s3
mov 240($key),$rnds # load key->rounds
sub \$1,$rnds
jmp .Lenc_loop
.align 16
if ($verticalspin) { &encvert(); }
else { &encstep(0,$s0,$s1,$s2,$s3);
&encstep(1,$s1,$s2,$s3,$s0);
&encstep(2,$s2,$s3,$s0,$s1);
&encstep(3,$s3,$s0,$s1,$s2);
}
if ($verticalspin) { &enclastvert(); }
else { &enclast(0,$s0,$s1,$s2,$s3);
&enclast(1,$s1,$s2,$s3,$s0);
&enclast(2,$s2,$s3,$s0,$s1);
&enclast(3,$s3,$s0,$s1,$s2);
$code.=<<___;
xor 16+0($key),$s0 # xor with key
xor 16+4($key),$s1
xor 16+8($key),$s2
xor 16+12($key),$s3
___
}
$code.=<<___;
.byte 0xf3,0xc3 # rep ret
.size _x86_64_AES_encrypt,.-_x86_64_AES_encrypt
___
# void AES_encrypt (const void *inp,void *out,const AES_KEY *key);
$code.=<<___;
.globl AES_encrypt
.type AES_encrypt,\@function,3
.align 16
AES_encrypt:
push %rbx
push %rbp
push %r12
push %r13
push %r14
push %r15
mov %rdx,$key
.picmeup $sbox
lea AES_Te-.($sbox),$sbox
mov 0($inp),$s0
mov 4($inp),$s1
mov 8($inp),$s2
mov 12($inp),$s3
call _x86_64_AES_encrypt
mov $s0,0($out)
mov $s1,4($out)
mov $s2,8($out)
mov $s3,12($out)
pop %r15
pop %r14
pop %r13
pop %r12
pop %rbp
pop %rbx
ret
.size AES_encrypt,.-AES_encrypt
___
#------------------------------------------------------------------#
sub decvert()
{ my $t3="%r8d"; # zaps $inp!
$code.=<<___;
# favor 3-way issue Opteron pipeline...
movzb `&lo("$s0")`,$acc0
movzb `&lo("$s1")`,$acc1
movzb `&lo("$s2")`,$acc2
mov 0($sbox,$acc0,8),$t0
mov 0($sbox,$acc1,8),$t1
mov 0($sbox,$acc2,8),$t2
movzb `&hi("$s3")`,$acc0
movzb `&hi("$s0")`,$acc1
movzb `&lo("$s3")`,$acc2
xor 3($sbox,$acc0,8),$t0
xor 3($sbox,$acc1,8),$t1
mov 0($sbox,$acc2,8),$t3
movzb `&hi("$s1")`,$acc0
movzb `&hi("$s2")`,$acc2
xor 3($sbox,$acc0,8),$t2
shr \$16,$s3
xor 3($sbox,$acc2,8),$t3
shr \$16,$s1
lea 16($key),$key
shr \$16,$s2
movzb `&lo("$s2")`,$acc0
movzb `&lo("$s3")`,$acc1
movzb `&lo("$s0")`,$acc2
xor 2($sbox,$acc0,8),$t0
xor 2($sbox,$acc1,8),$t1
xor 2($sbox,$acc2,8),$t2
movzb `&hi("$s1")`,$acc0
movzb `&hi("$s2")`,$acc1
movzb `&lo("$s1")`,$acc2
xor 1($sbox,$acc0,8),$t0
xor 1($sbox,$acc1,8),$t1
xor 2($sbox,$acc2,8),$t3
movzb `&hi("$s3")`,$acc0
movzb `&hi("$s0")`,$acc2
xor 1($sbox,$acc0,8),$t2
mov 0($key),$s0
xor 1($sbox,$acc2,8),$t3
xor $t0,$s0
mov 4($key),$s1
mov 8($key),$s2
xor $t2,$s2
xor $t1,$s1
xor $t3,$s3
___
}
sub declastvert()
{ my $t3="%r8d"; # zaps $inp!
$code.=<<___;
movzb `&lo("$s0")`,$acc0
movzb `&lo("$s1")`,$acc1
movzb `&lo("$s2")`,$acc2
mov 2048($sbox,$acc0,4),$t0
mov 2048($sbox,$acc1,4),$t1
mov 2048($sbox,$acc2,4),$t2
and \$0x000000ff,$t0
and \$0x000000ff,$t1
and \$0x000000ff,$t2
movzb `&lo("$s3")`,$acc0
movzb `&hi("$s3")`,$acc1
movzb `&hi("$s0")`,$acc2
mov 2048($sbox,$acc0,4),$t3
mov 2048($sbox,$acc1,4),$acc1 #$t0
mov 2048($sbox,$acc2,4),$acc2 #$t1
and \$0x000000ff,$t3
and \$0x0000ff00,$acc1
and \$0x0000ff00,$acc2
xor $acc1,$t0
xor $acc2,$t1
shr \$16,$s3
movzb `&hi("$s1")`,$acc0
movzb `&hi("$s2")`,$acc1
shr \$16,$s0
mov 2048($sbox,$acc0,4),$acc0 #$t2
mov 2048($sbox,$acc1,4),$acc1 #$t3
and \$0x0000ff00,$acc0
and \$0x0000ff00,$acc1
shr \$16,$s1
xor $acc0,$t2
xor $acc1,$t3
shr \$16,$s2
movzb `&lo("$s2")`,$acc0
movzb `&lo("$s3")`,$acc1
movzb `&lo("$s0")`,$acc2
mov 2048($sbox,$acc0,4),$acc0 #$t0
mov 2048($sbox,$acc1,4),$acc1 #$t1
mov 2048($sbox,$acc2,4),$acc2 #$t2
and \$0x00ff0000,$acc0
and \$0x00ff0000,$acc1
and \$0x00ff0000,$acc2
xor $acc0,$t0
xor $acc1,$t1
xor $acc2,$t2
movzb `&lo("$s1")`,$acc0
movzb `&hi("$s1")`,$acc1
movzb `&hi("$s2")`,$acc2
mov 2048($sbox,$acc0,4),$acc0 #$t3
mov 2048($sbox,$acc1,4),$acc1 #$t0
mov 2048($sbox,$acc2,4),$acc2 #$t1
and \$0x00ff0000,$acc0
and \$0xff000000,$acc1
and \$0xff000000,$acc2
xor $acc0,$t3
xor $acc1,$t0
xor $acc2,$t1
movzb `&hi("$s3")`,$acc0
movzb `&hi("$s0")`,$acc1
mov 16+12($key),$s3
mov 2048($sbox,$acc0,4),$acc0 #$t2
mov 2048($sbox,$acc1,4),$acc1 #$t3
mov 16+0($key),$s0
and \$0xff000000,$acc0
and \$0xff000000,$acc1
xor $acc0,$t2
xor $acc1,$t3
mov 16+4($key),$s1
mov 16+8($key),$s2
xor $t0,$s0
xor $t1,$s1
xor $t2,$s2
xor $t3,$s3
___
}
sub decstep()
{ my ($i,@s) = @_;
my $tmp0=$acc0;
my $tmp1=$acc1;
my $tmp2=$acc2;
my $out=($t0,$t1,$t2,$s[0])[$i];
$code.=" mov $s[0],$out\n" if ($i!=3);
$tmp1=$s[2] if ($i==3);
$code.=" mov $s[2],$tmp1\n" if ($i!=3);
$code.=" and \$0xFF,$out\n";
$code.=" shr \$16,$tmp1\n";
$tmp2=$s[3] if ($i==3);
$code.=" mov $s[3],$tmp2\n" if ($i!=3);
$tmp0=$s[1] if ($i==3);
$code.=" movzb ".&hi($s[1]).",$tmp0\n";
$code.=" and \$0xFF,$tmp1\n";
$code.=" shr \$24,$tmp2\n";
$code.=" xor 3($sbox,$tmp0,8),$out\n";
$code.=" xor 2($sbox,$tmp1,8),$out\n";
$code.=" xor 1($sbox,$tmp2,8),$out\n";
$code.=" mov $t2,$s[1]\n" if ($i==3);
$code.=" mov $t1,$s[2]\n" if ($i==3);
$code.=" mov $t0,$s[3]\n" if ($i==3);
$code.="\n";
}
sub declast()
{ my ($i,@s)=@_;
my $tmp0=$acc0;
my $tmp1=$acc1;
my $tmp2=$acc2;
my $out=($t0,$t1,$t2,$s[0])[$i];
$code.=" mov $s[0],$out\n" if ($i!=3);
$tmp1=$s[2] if ($i==3);
$code.=" mov $s[2],$tmp1\n" if ($i!=3);
$code.=" and \$0xFF,$out\n";
$code.=" mov 2048($sbox,$out,4),$out\n";
$code.=" shr \$16,$tmp1\n";
$tmp2=$s[3] if ($i==3);
$code.=" mov $s[3],$tmp2\n" if ($i!=3);
$code.=" and \$0x000000ff,$out\n";
$tmp0=$s[1] if ($i==3);
$code.=" movzb ".&hi($s[1]).",$tmp0\n";
$code.=" and \$0xFF,$tmp1\n";
$code.=" shr \$24,$tmp2\n";
$code.=" mov 2048($sbox,$tmp0,4),$tmp0\n";
$code.=" mov 2048($sbox,$tmp1,4),$tmp1\n";
$code.=" mov 2048($sbox,$tmp2,4),$tmp2\n";
$code.=" and \$0x0000ff00,$tmp0\n";
$code.=" and \$0x00ff0000,$tmp1\n";
$code.=" and \$0xff000000,$tmp2\n";
$code.=" xor $tmp0,$out\n";
$code.=" mov $t2,$s[1]\n" if ($i==3);
$code.=" xor $tmp1,$out\n";
$code.=" mov $t1,$s[2]\n" if ($i==3);
$code.=" xor $tmp2,$out\n";
$code.=" mov $t0,$s[3]\n" if ($i==3);
$code.="\n";
}
$code.=<<___;
.type _x86_64_AES_decrypt,\@abi-omnipotent
.align 16
_x86_64_AES_decrypt:
xor 0($key),$s0 # xor with key
xor 4($key),$s1
xor 8($key),$s2
xor 12($key),$s3
mov 240($key),$rnds # load key->rounds
sub \$1,$rnds
jmp .Ldec_loop
.align 16
if ($verticalspin) { &decvert(); }
else { &decstep(0,$s0,$s3,$s2,$s1);
&decstep(1,$s1,$s0,$s3,$s2);
&decstep(2,$s2,$s1,$s0,$s3);
&decstep(3,$s3,$s2,$s1,$s0);
$code.=<<___;
lea 16($key),$key
xor 0($key),$s0 # xor with key
xor 4($key),$s1
xor 8($key),$s2
xor 12($key),$s3
___
}
if ($verticalspin) { &declastvert(); }
else { &declast(0,$s0,$s3,$s2,$s1);
&declast(1,$s1,$s0,$s3,$s2);
&declast(2,$s2,$s1,$s0,$s3);
&declast(3,$s3,$s2,$s1,$s0);
$code.=<<___;
xor 16+0($key),$s0 # xor with key
xor 4($key),$s1
xor 8($key),$s2
xor 12($key),$s3
___
}
$code.=<<___;
.byte 0xf3,0xc3 # rep ret
.size _x86_64_AES_decrypt,.-_x86_64_AES_decrypt
___
# void AES_decrypt (const void *inp,void *out,const AES_KEY *key);
$code.=<<___;
.globl AES_decrypt
.type AES_decrypt,\@function,3
.align 16
AES_decrypt:
push %rbx
push %rbp
push %r12
push %r13
push %r14
push %r15
mov %rdx,$key
.picmeup $sbox
lea AES_Td-.($sbox),$sbox
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mov 0($inp),$s0
mov 4($inp),$s1
mov 8($inp),$s2
mov 12($inp),$s3
call _x86_64_AES_decrypt
mov $s0,0($out)
mov $s1,4($out)
mov $s2,8($out)
mov $s3,12($out)
pop %r15
pop %r14
pop %r13
pop %r12
pop %rbp
pop %rbx
ret
.size AES_decrypt,.-AES_decrypt
___
#------------------------------------------------------------------#
sub enckey()
{
$code.=<<___;
movz %dl,%esi # rk[i]>>0
mov 2(%rbp,%rsi,8),%ebx
movz %dh,%esi # rk[i]>>8
and \$0xFF000000,%ebx
xor %ebx,%eax
mov 2(%rbp,%rsi,8),%ebx
shr \$16,%edx
and \$0x000000FF,%ebx
movz %dl,%esi # rk[i]>>16
xor %ebx,%eax
mov 0(%rbp,%rsi,8),%ebx
movz %dh,%esi # rk[i]>>24
and \$0x0000FF00,%ebx
xor %ebx,%eax
mov 0(%rbp,%rsi,8),%ebx
and \$0x00FF0000,%ebx
xor %ebx,%eax
xor 2048(%rbp,%rcx,4),%eax # rcon
___
}
# int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
# AES_KEY *key)
$code.=<<___;
.globl AES_set_encrypt_key
.type AES_set_encrypt_key,\@function,3
.align 16
AES_set_encrypt_key:
push %rbx
push %rbp
mov %esi,%ecx # %ecx=bits
mov %rdi,%rsi # %rsi=userKey
mov %rdx,%rdi # %rdi=key
test \$-1,%rsi
jz .Lbadpointer
test \$-1,%rdi
jz .Lbadpointer
.picmeup %rbp
lea AES_Te-.(%rbp),%rbp
cmp \$128,%ecx
je .L10rounds
cmp \$192,%ecx
je .L12rounds
cmp \$256,%ecx
je .L14rounds
mov \$-2,%rax # invalid number of bits
jmp .Lexit
.L10rounds:
mov 0(%rsi),%eax # copy first 4 dwords
mov 4(%rsi),%ebx
mov 8(%rsi),%ecx
mov 12(%rsi),%edx
mov %eax,0(%rdi)
mov %ebx,4(%rdi)
mov %ecx,8(%rdi)
mov %edx,12(%rdi)
xor %ecx,%ecx
jmp .L10shortcut
.align 4
.L10loop:
mov 0(%rdi),%eax # rk[0]
mov 12(%rdi),%edx # rk[3]
.L10shortcut:
___
&enckey ();
$code.=<<___;
mov %eax,16(%rdi) # rk[4]
xor 4(%rdi),%eax
mov %eax,20(%rdi) # rk[5]
xor 8(%rdi),%eax
mov %eax,24(%rdi) # rk[6]
xor 12(%rdi),%eax
mov %eax,28(%rdi) # rk[7]
add \$1,%ecx
lea 16(%rdi),%rdi
cmp \$10,%ecx
jl .L10loop
movl \$10,80(%rdi) # setup number of rounds
xor %rax,%rax
jmp .Lexit
.L12rounds:
mov 0(%rsi),%eax # copy first 6 dwords
mov 4(%rsi),%ebx
mov 8(%rsi),%ecx
mov 12(%rsi),%edx
mov %eax,0(%rdi)
mov %ebx,4(%rdi)
mov %ecx,8(%rdi)
mov %edx,12(%rdi)
mov 16(%rsi),%ecx
mov 20(%rsi),%edx
mov %ecx,16(%rdi)
mov %edx,20(%rdi)
xor %ecx,%ecx
jmp .L12shortcut
.align 4
.L12loop:
mov 0(%rdi),%eax # rk[0]
mov 20(%rdi),%edx # rk[5]
.L12shortcut:
___
&enckey ();
$code.=<<___;
mov %eax,24(%rdi) # rk[6]
xor 4(%rdi),%eax
mov %eax,28(%rdi) # rk[7]
xor 8(%rdi),%eax
mov %eax,32(%rdi) # rk[8]
xor 12(%rdi),%eax
mov %eax,36(%rdi) # rk[9]
cmp \$7,%ecx
je .L12break
add \$1,%ecx
xor 16(%rdi),%eax
mov %eax,40(%rdi) # rk[10]
xor 20(%rdi),%eax
mov %eax,44(%rdi) # rk[11]
lea 24(%rdi),%rdi
jmp .L12loop
.L12break:
movl \$12,72(%rdi) # setup number of rounds
xor %rax,%rax
jmp .Lexit
.L14rounds:
mov 0(%rsi),%eax # copy first 8 dwords
mov 4(%rsi),%ebx
mov 8(%rsi),%ecx
mov 12(%rsi),%edx
mov %eax,0(%rdi)
mov %ebx,4(%rdi)
mov %ecx,8(%rdi)
mov %edx,12(%rdi)
mov 16(%rsi),%eax
mov 20(%rsi),%ebx
mov 24(%rsi),%ecx
mov 28(%rsi),%edx
mov %eax,16(%rdi)
mov %ebx,20(%rdi)
mov %ecx,24(%rdi)
mov %edx,28(%rdi)
xor %ecx,%ecx
jmp .L14shortcut
.align 4
.L14loop:
mov 28(%rdi),%edx # rk[4]
.L14shortcut:
mov 0(%rdi),%eax # rk[0]
___
&enckey ();
$code.=<<___;
mov %eax,32(%rdi) # rk[8]
xor 4(%rdi),%eax
mov %eax,36(%rdi) # rk[9]
xor 8(%rdi),%eax
mov %eax,40(%rdi) # rk[10]
xor 12(%rdi),%eax
mov %eax,44(%rdi) # rk[11]
cmp \$6,%ecx
je .L14break
add \$1,%ecx
mov %eax,%edx
mov 16(%rdi),%eax # rk[4]
movz %dl,%esi # rk[11]>>0
mov 2(%rbp,%rsi,8),%ebx
movz %dh,%esi # rk[11]>>8
and \$0x000000FF,%ebx
xor %ebx,%eax
mov 0(%rbp,%rsi,8),%ebx
shr \$16,%edx
and \$0x0000FF00,%ebx
movz %dl,%esi # rk[11]>>16
xor %ebx,%eax
mov 0(%rbp,%rsi,8),%ebx
movz %dh,%esi # rk[11]>>24
and \$0x00FF0000,%ebx
xor %ebx,%eax
mov 2(%rbp,%rsi,8),%ebx
and \$0xFF000000,%ebx
xor %ebx,%eax
mov %eax,48(%rdi) # rk[12]
xor 20(%rdi),%eax
mov %eax,52(%rdi) # rk[13]
xor 24(%rdi),%eax
mov %eax,56(%rdi) # rk[14]
xor 28(%rdi),%eax
mov %eax,60(%rdi) # rk[15]
lea 32(%rdi),%rdi
jmp .L14loop
.L14break:
movl \$14,48(%rdi) # setup number of rounds
xor %rax,%rax
jmp .Lexit
.Lbadpointer:
mov \$-1,%rax
.Lexit:
pop %rbp
pop %rbx
ret
.size AES_set_encrypt_key,.-AES_set_encrypt_key
___
sub deckey()
{ my ($i,$ptr,$te,$td) = @_;
$code.=<<___;
mov $i($ptr),%eax
mov %eax,%edx
movz %ah,%ebx
shr \$16,%edx
and \$0xFF,%eax
movzb 2($te,%rax,8),%rax
movzb 2($te,%rbx,8),%rbx
mov 0($td,%rax,8),%eax
xor 3($td,%rbx,8),%eax
movzb %dh,%ebx
and \$0xFF,%edx
movzb 2($te,%rdx,8),%rdx
movzb 2($te,%rbx,8),%rbx
xor 2($td,%rdx,8),%eax
xor 1($td,%rbx,8),%eax
mov %eax,$i($ptr)
___
}
# int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
# AES_KEY *key)
$code.=<<___;
.globl AES_set_decrypt_key
.type AES_set_decrypt_key,\@function,3
.align 16
AES_set_decrypt_key:
push %rdx
call AES_set_encrypt_key
cmp \$0,%eax
je .Lproceed
lea 24(%rsp),%rsp
ret
.Lproceed:
mov (%rsp),%r8 # restore key schedule
mov %rbx,(%rsp)
mov 240(%r8),%ecx # pull number of rounds
xor %rdi,%rdi
lea (%rdi,%rcx,4),%rcx
mov %r8,%rsi
lea (%r8,%rcx,4),%rdi # pointer to last chunk
.align 4
.Linvert:
mov 0(%rsi),%rax
mov 8(%rsi),%rbx
mov 0(%rdi),%rcx
mov 8(%rdi),%rdx
mov %rax,0(%rdi)
mov %rbx,8(%rdi)
mov %rcx,0(%rsi)
mov %rdx,8(%rsi)
lea 16(%rsi),%rsi
lea -16(%rdi),%rdi
cmp %rsi,%rdi
jne .Linvert
.picmeup %r9
lea AES_Td-.(%r9),%rdi
lea AES_Te-AES_Td(%rdi),%r9
mov %r8,%rsi
mov 240(%r8),%ecx # pull number of rounds
sub \$1,%ecx
.align 4
.Lpermute: