diff options
Diffstat (limited to 'openssl/crypto/rc4/asm/rc4-md5-x86_64.pl')
| -rw-r--r-- | openssl/crypto/rc4/asm/rc4-md5-x86_64.pl | 631 |
1 files changed, 631 insertions, 0 deletions
diff --git a/openssl/crypto/rc4/asm/rc4-md5-x86_64.pl b/openssl/crypto/rc4/asm/rc4-md5-x86_64.pl new file mode 100644 index 000000000..7f684092d --- /dev/null +++ b/openssl/crypto/rc4/asm/rc4-md5-x86_64.pl @@ -0,0 +1,631 @@ +#!/usr/bin/env perl +# +# ==================================================================== +# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL +# project. The module is, however, dual licensed under OpenSSL and +# CRYPTOGAMS licenses depending on where you obtain it. For further +# details see http://www.openssl.org/~appro/cryptogams/. +# ==================================================================== + +# June 2011 +# +# This is RC4+MD5 "stitch" implementation. The idea, as spelled in +# http://download.intel.com/design/intarch/papers/323686.pdf, is that +# since both algorithms exhibit instruction-level parallelism, ILP, +# below theoretical maximum, interleaving them would allow to utilize +# processor resources better and achieve better performance. RC4 +# instruction sequence is virtually identical to rc4-x86_64.pl, which +# is heavily based on submission by Maxim Perminov, Maxim Locktyukhin +# and Jim Guilford of Intel. MD5 is fresh implementation aiming to +# minimize register usage, which was used as "main thread" with RC4 +# weaved into it, one RC4 round per one MD5 round. In addition to the +# stiched subroutine the script can generate standalone replacement +# md5_block_asm_data_order and RC4. Below are performance numbers in +# cycles per processed byte, less is better, for these the standalone +# subroutines, sum of them, and stitched one: +# +# RC4 MD5 RC4+MD5 stitch gain +# Opteron 6.5(*) 5.4 11.9 7.0 +70%(*) +# Core2 6.5 5.8 12.3 7.7 +60% +# Westmere 4.3 5.2 9.5 7.0 +36% +# Sandy Bridge 4.2 5.5 9.7 6.8 +43% +# Atom 9.3 6.5 15.8 11.1 +42% +# +# (*) rc4-x86_64.pl delivers 5.3 on Opteron, so real improvement +# is +53%... + +my ($rc4,$md5)=(1,1); # what to generate? +my $D="#" if (!$md5); # if set to "#", MD5 is stitched into RC4(), + # but its result is discarded. Idea here is + # to be able to use 'openssl speed rc4' for + # benchmarking the stitched subroutine... + +my $flavour = shift; +my $output = shift; +if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } + +my $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); + +$0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; my $xlate; +( $xlate="${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 $output"; + +my ($dat,$in0,$out,$ctx,$inp,$len, $func,$nargs); + +if ($rc4 && !$md5) { + ($dat,$len,$in0,$out) = ("%rdi","%rsi","%rdx","%rcx"); + $func="RC4"; $nargs=4; +} elsif ($md5 && !$rc4) { + ($ctx,$inp,$len) = ("%rdi","%rsi","%rdx"); + $func="md5_block_asm_data_order"; $nargs=3; +} else { + ($dat,$in0,$out,$ctx,$inp,$len) = ("%rdi","%rsi","%rdx","%rcx","%r8","%r9"); + $func="rc4_md5_enc"; $nargs=6; + # void rc4_md5_enc( + # RC4_KEY *key, # + # const void *in0, # RC4 input + # void *out, # RC4 output + # MD5_CTX *ctx, # + # const void *inp, # MD5 input + # size_t len); # number of 64-byte blocks +} + +my @K=( 0xd76aa478,0xe8c7b756,0x242070db,0xc1bdceee, + 0xf57c0faf,0x4787c62a,0xa8304613,0xfd469501, + 0x698098d8,0x8b44f7af,0xffff5bb1,0x895cd7be, + 0x6b901122,0xfd987193,0xa679438e,0x49b40821, + + 0xf61e2562,0xc040b340,0x265e5a51,0xe9b6c7aa, + 0xd62f105d,0x02441453,0xd8a1e681,0xe7d3fbc8, + 0x21e1cde6,0xc33707d6,0xf4d50d87,0x455a14ed, + 0xa9e3e905,0xfcefa3f8,0x676f02d9,0x8d2a4c8a, + + 0xfffa3942,0x8771f681,0x6d9d6122,0xfde5380c, + 0xa4beea44,0x4bdecfa9,0xf6bb4b60,0xbebfbc70, + 0x289b7ec6,0xeaa127fa,0xd4ef3085,0x04881d05, + 0xd9d4d039,0xe6db99e5,0x1fa27cf8,0xc4ac5665, + + 0xf4292244,0x432aff97,0xab9423a7,0xfc93a039, + 0x655b59c3,0x8f0ccc92,0xffeff47d,0x85845dd1, + 0x6fa87e4f,0xfe2ce6e0,0xa3014314,0x4e0811a1, + 0xf7537e82,0xbd3af235,0x2ad7d2bb,0xeb86d391 ); + +my @V=("%r8d","%r9d","%r10d","%r11d"); # MD5 registers +my $tmp="%r12d"; + +my @XX=("%rbp","%rsi"); # RC4 registers +my @TX=("%rax","%rbx"); +my $YY="%rcx"; +my $TY="%rdx"; + +my $MOD=32; # 16, 32 or 64 + +$code.=<<___; +.text +.align 16 + +.globl $func +.type $func,\@function,$nargs +$func: + cmp \$0,$len + je .Labort + push %rbx + push %rbp + push %r12 + push %r13 + push %r14 + push %r15 + sub \$40,%rsp +.Lbody: +___ +if ($rc4) { +$code.=<<___; +$D#md5# mov $ctx,%r11 # reassign arguments + mov $len,%r12 + mov $in0,%r13 + mov $out,%r14 +$D#md5# mov $inp,%r15 +___ + $ctx="%r11" if ($md5); # reassign arguments + $len="%r12"; + $in0="%r13"; + $out="%r14"; + $inp="%r15" if ($md5); + $inp=$in0 if (!$md5); +$code.=<<___; + xor $XX[0],$XX[0] + xor $YY,$YY + + lea 8($dat),$dat + mov -8($dat),$XX[0]#b + mov -4($dat),$YY#b + + inc $XX[0]#b + sub $in0,$out + movl ($dat,$XX[0],4),$TX[0]#d +___ +$code.=<<___ if (!$md5); + xor $TX[1],$TX[1] + test \$-128,$len + jz .Loop1 + sub $XX[0],$TX[1] + and \$`$MOD-1`,$TX[1] + jz .Loop${MOD}_is_hot + sub $TX[1],$len +.Loop${MOD}_warmup: + add $TX[0]#b,$YY#b + movl ($dat,$YY,4),$TY#d + movl $TX[0]#d,($dat,$YY,4) + movl $TY#d,($dat,$XX[0],4) + add $TY#b,$TX[0]#b + inc $XX[0]#b + movl ($dat,$TX[0],4),$TY#d + movl ($dat,$XX[0],4),$TX[0]#d + xorb ($in0),$TY#b + movb $TY#b,($out,$in0) + lea 1($in0),$in0 + dec $TX[1] + jnz .Loop${MOD}_warmup + + mov $YY,$TX[1] + xor $YY,$YY + mov $TX[1]#b,$YY#b + +.Loop${MOD}_is_hot: + mov $len,32(%rsp) # save original $len + shr \$6,$len # number of 64-byte blocks +___ + if ($D && !$md5) { # stitch in dummy MD5 + $md5=1; + $ctx="%r11"; + $inp="%r15"; + $code.=<<___; + mov %rsp,$ctx + mov $in0,$inp +___ + } +} +$code.=<<___; +#rc4# add $TX[0]#b,$YY#b +#rc4# lea ($dat,$XX[0],4),$XX[1] + shl \$6,$len + add $inp,$len # pointer to the end of input + mov $len,16(%rsp) + +#md5# mov $ctx,24(%rsp) # save pointer to MD5_CTX +#md5# mov 0*4($ctx),$V[0] # load current hash value from MD5_CTX +#md5# mov 1*4($ctx),$V[1] +#md5# mov 2*4($ctx),$V[2] +#md5# mov 3*4($ctx),$V[3] + jmp .Loop + +.align 16 +.Loop: +#md5# mov $V[0],0*4(%rsp) # put aside current hash value +#md5# mov $V[1],1*4(%rsp) +#md5# mov $V[2],2*4(%rsp) +#md5# mov $V[3],$tmp # forward reference +#md5# mov $V[3],3*4(%rsp) +___ + +sub R0 { + my ($i,$a,$b,$c,$d)=@_; + my @rot0=(7,12,17,22); + my $j=$i%16; + my $k=$i%$MOD; + my $xmm="%xmm".($j&1); + $code.=" movdqu ($in0),%xmm2\n" if ($rc4 && $j==15); + $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1); + $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1); + $code.=<<___; +#rc4# movl ($dat,$YY,4),$TY#d +#md5# xor $c,$tmp +#rc4# movl $TX[0]#d,($dat,$YY,4) +#md5# and $b,$tmp +#md5# add 4*`$j`($inp),$a +#rc4# add $TY#b,$TX[0]#b +#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d +#md5# add \$$K[$i],$a +#md5# xor $d,$tmp +#rc4# movz $TX[0]#b,$TX[0]#d +#rc4# movl $TY#d,4*$k($XX[1]) +#md5# add $tmp,$a +#rc4# add $TX[1]#b,$YY#b +#md5# rol \$$rot0[$j%4],$a +#md5# mov `$j==15?"$b":"$c"`,$tmp # forward reference +#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n +#md5# add $b,$a +___ + $code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1); + mov $YY,$XX[1] + xor $YY,$YY # keyword to partial register + mov $XX[1]#b,$YY#b + lea ($dat,$XX[0],4),$XX[1] +___ + $code.=<<___ if ($rc4 && $j==15); + psllq \$8,%xmm1 + pxor %xmm0,%xmm2 + pxor %xmm1,%xmm2 +___ +} +sub R1 { + my ($i,$a,$b,$c,$d)=@_; + my @rot1=(5,9,14,20); + my $j=$i%16; + my $k=$i%$MOD; + my $xmm="%xmm".($j&1); + $code.=" movdqu 16($in0),%xmm3\n" if ($rc4 && $j==15); + $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1); + $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1); + $code.=<<___; +#rc4# movl ($dat,$YY,4),$TY#d +#md5# xor $b,$tmp +#rc4# movl $TX[0]#d,($dat,$YY,4) +#md5# and $d,$tmp +#md5# add 4*`((1+5*$j)%16)`($inp),$a +#rc4# add $TY#b,$TX[0]#b +#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d +#md5# add \$$K[$i],$a +#md5# xor $c,$tmp +#rc4# movz $TX[0]#b,$TX[0]#d +#rc4# movl $TY#d,4*$k($XX[1]) +#md5# add $tmp,$a +#rc4# add $TX[1]#b,$YY#b +#md5# rol \$$rot1[$j%4],$a +#md5# mov `$j==15?"$c":"$b"`,$tmp # forward reference +#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n +#md5# add $b,$a +___ + $code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1); + mov $YY,$XX[1] + xor $YY,$YY # keyword to partial register + mov $XX[1]#b,$YY#b + lea ($dat,$XX[0],4),$XX[1] +___ + $code.=<<___ if ($rc4 && $j==15); + psllq \$8,%xmm1 + pxor %xmm0,%xmm3 + pxor %xmm1,%xmm3 +___ +} +sub R2 { + my ($i,$a,$b,$c,$d)=@_; + my @rot2=(4,11,16,23); + my $j=$i%16; + my $k=$i%$MOD; + my $xmm="%xmm".($j&1); + $code.=" movdqu 32($in0),%xmm4\n" if ($rc4 && $j==15); + $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1); + $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1); + $code.=<<___; +#rc4# movl ($dat,$YY,4),$TY#d +#md5# xor $c,$tmp +#rc4# movl $TX[0]#d,($dat,$YY,4) +#md5# xor $b,$tmp +#md5# add 4*`((5+3*$j)%16)`($inp),$a +#rc4# add $TY#b,$TX[0]#b +#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d +#md5# add \$$K[$i],$a +#rc4# movz $TX[0]#b,$TX[0]#d +#md5# add $tmp,$a +#rc4# movl $TY#d,4*$k($XX[1]) +#rc4# add $TX[1]#b,$YY#b +#md5# rol \$$rot2[$j%4],$a +#md5# mov `$j==15?"\\\$-1":"$c"`,$tmp # forward reference +#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n +#md5# add $b,$a +___ + $code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1); + mov $YY,$XX[1] + xor $YY,$YY # keyword to partial register + mov $XX[1]#b,$YY#b + lea ($dat,$XX[0],4),$XX[1] +___ + $code.=<<___ if ($rc4 && $j==15); + psllq \$8,%xmm1 + pxor %xmm0,%xmm4 + pxor %xmm1,%xmm4 +___ +} +sub R3 { + my ($i,$a,$b,$c,$d)=@_; + my @rot3=(6,10,15,21); + my $j=$i%16; + my $k=$i%$MOD; + my $xmm="%xmm".($j&1); + $code.=" movdqu 48($in0),%xmm5\n" if ($rc4 && $j==15); + $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1); + $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1); + $code.=<<___; +#rc4# movl ($dat,$YY,4),$TY#d +#md5# xor $d,$tmp +#rc4# movl $TX[0]#d,($dat,$YY,4) +#md5# or $b,$tmp +#md5# add 4*`((7*$j)%16)`($inp),$a +#rc4# add $TY#b,$TX[0]#b +#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d +#md5# add \$$K[$i],$a +#rc4# movz $TX[0]#b,$TX[0]#d +#md5# xor $c,$tmp +#rc4# movl $TY#d,4*$k($XX[1]) +#md5# add $tmp,$a +#rc4# add $TX[1]#b,$YY#b +#md5# rol \$$rot3[$j%4],$a +#md5# mov \$-1,$tmp # forward reference +#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n +#md5# add $b,$a +___ + $code.=<<___ if ($rc4 && $j==15); + mov $XX[0],$XX[1] + xor $XX[0],$XX[0] # keyword to partial register + mov $XX[1]#b,$XX[0]#b + mov $YY,$XX[1] + xor $YY,$YY # keyword to partial register + mov $XX[1]#b,$YY#b + lea ($dat,$XX[0],4),$XX[1] + psllq \$8,%xmm1 + pxor %xmm0,%xmm5 + pxor %xmm1,%xmm5 +___ +} + +my $i=0; +for(;$i<16;$i++) { R0($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); } +for(;$i<32;$i++) { R1($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); } +for(;$i<48;$i++) { R2($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); } +for(;$i<64;$i++) { R3($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); } + +$code.=<<___; +#md5# add 0*4(%rsp),$V[0] # accumulate hash value +#md5# add 1*4(%rsp),$V[1] +#md5# add 2*4(%rsp),$V[2] +#md5# add 3*4(%rsp),$V[3] + +#rc4# movdqu %xmm2,($out,$in0) # write RC4 output +#rc4# movdqu %xmm3,16($out,$in0) +#rc4# movdqu %xmm4,32($out,$in0) +#rc4# movdqu %xmm5,48($out,$in0) +#md5# lea 64($inp),$inp +#rc4# lea 64($in0),$in0 + cmp 16(%rsp),$inp # are we done? + jb .Loop + +#md5# mov 24(%rsp),$len # restore pointer to MD5_CTX +#rc4# sub $TX[0]#b,$YY#b # correct $YY +#md5# mov $V[0],0*4($len) # write MD5_CTX +#md5# mov $V[1],1*4($len) +#md5# mov $V[2],2*4($len) +#md5# mov $V[3],3*4($len) +___ +$code.=<<___ if ($rc4 && (!$md5 || $D)); + mov 32(%rsp),$len # restore original $len + and \$63,$len # remaining bytes + jnz .Loop1 + jmp .Ldone + +.align 16 +.Loop1: + add $TX[0]#b,$YY#b + movl ($dat,$YY,4),$TY#d + movl $TX[0]#d,($dat,$YY,4) + movl $TY#d,($dat,$XX[0],4) + add $TY#b,$TX[0]#b + inc $XX[0]#b + movl ($dat,$TX[0],4),$TY#d + movl ($dat,$XX[0],4),$TX[0]#d + xorb ($in0),$TY#b + movb $TY#b,($out,$in0) + lea 1($in0),$in0 + dec $len + jnz .Loop1 + +.Ldone: +___ +$code.=<<___; +#rc4# sub \$1,$XX[0]#b +#rc4# movl $XX[0]#d,-8($dat) +#rc4# movl $YY#d,-4($dat) + + mov 40(%rsp),%r15 + mov 48(%rsp),%r14 + mov 56(%rsp),%r13 + mov 64(%rsp),%r12 + mov 72(%rsp),%rbp + mov 80(%rsp),%rbx + lea 88(%rsp),%rsp +.Lepilogue: +.Labort: + ret +.size $func,.-$func +___ + +if ($rc4 && $D) { # sole purpose of this section is to provide + # option to use the generated module as drop-in + # replacement for rc4-x86_64.pl for debugging + # and testing purposes... +my ($idx,$ido)=("%r8","%r9"); +my ($dat,$len,$inp)=("%rdi","%rsi","%rdx"); + +$code.=<<___; +.globl RC4_set_key +.type RC4_set_key,\@function,3 +.align 16 +RC4_set_key: + lea 8($dat),$dat + lea ($inp,$len),$inp + neg $len + mov $len,%rcx + xor %eax,%eax + xor $ido,$ido + xor %r10,%r10 + xor %r11,%r11 + jmp .Lw1stloop + +.align 16 +.Lw1stloop: + mov %eax,($dat,%rax,4) + add \$1,%al + jnc .Lw1stloop + + xor $ido,$ido + xor $idx,$idx +.align 16 +.Lw2ndloop: + mov ($dat,$ido,4),%r10d + add ($inp,$len,1),$idx#b + add %r10b,$idx#b + add \$1,$len + mov ($dat,$idx,4),%r11d + cmovz %rcx,$len + mov %r10d,($dat,$idx,4) + mov %r11d,($dat,$ido,4) + add \$1,$ido#b + jnc .Lw2ndloop + + xor %eax,%eax + mov %eax,-8($dat) + mov %eax,-4($dat) + ret +.size RC4_set_key,.-RC4_set_key + +.globl RC4_options +.type RC4_options,\@abi-omnipotent +.align 16 +RC4_options: + lea .Lopts(%rip),%rax + ret +.align 64 +.Lopts: +.asciz "rc4(64x,int)" +.align 64 +.size RC4_options,.-RC4_options +___ +} +# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame, +# CONTEXT *context,DISPATCHER_CONTEXT *disp) +if ($win64) { +my $rec="%rcx"; +my $frame="%rdx"; +my $context="%r8"; +my $disp="%r9"; + +$code.=<<___; +.extern __imp_RtlVirtualUnwind +.type se_handler,\@abi-omnipotent +.align 16 +se_handler: + push %rsi + push %rdi + push %rbx + push %rbp + push %r12 + push %r13 + push %r14 + push %r15 + pushfq + sub \$64,%rsp + + mov 120($context),%rax # pull context->Rax + mov 248($context),%rbx # pull context->Rip + + lea .Lbody(%rip),%r10 + cmp %r10,%rbx # context->Rip<.Lbody + jb .Lin_prologue + + mov 152($context),%rax # pull context->Rsp + + lea .Lepilogue(%rip),%r10 + cmp %r10,%rbx # context->Rip>=.Lepilogue + jae .Lin_prologue + + mov 40(%rax),%r15 + mov 48(%rax),%r14 + mov 56(%rax),%r13 + mov 64(%rax),%r12 + mov 72(%rax),%rbp + mov 80(%rax),%rbx + lea 88(%rax),%rax + + mov %rbx,144($context) # restore context->Rbx + mov %rbp,160($context) # restore context->Rbp + mov %r12,216($context) # restore context->R12 + mov %r13,224($context) # restore context->R12 + mov %r14,232($context) # restore context->R14 + mov %r15,240($context) # restore context->R15 + +.Lin_prologue: + mov 8(%rax),%rdi + mov 16(%rax),%rsi + mov %rax,152($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 $disp,%rsi + xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER + mov 8(%rsi),%rdx # arg2, disp->ImageBase + mov 0(%rsi),%r8 # arg3, disp->ControlPc + mov 16(%rsi),%r9 # arg4, disp->FunctionEntry + mov 40(%rsi),%r10 # disp->ContextRecord + lea 56(%rsi),%r11 # &disp->HandlerData + lea 24(%rsi),%r12 # &disp->EstablisherFrame + mov %r10,32(%rsp) # arg5 + mov %r11,40(%rsp) # arg6 + mov %r12,48(%rsp) # arg7 + mov %rcx,56(%rsp) # arg8, (NULL) + call *__imp_RtlVirtualUnwind(%rip) + + mov \$1,%eax # ExceptionContinueSearch + add \$64,%rsp + popfq + pop %r15 + pop %r14 + pop %r13 + pop %r12 + pop %rbp + pop %rbx + pop %rdi + pop %rsi + ret +.size se_handler,.-se_handler + +.section .pdata +.align 4 + .rva .LSEH_begin_$func + .rva .LSEH_end_$func + .rva .LSEH_info_$func + +.section .xdata +.align 8 +.LSEH_info_$func: + .byte 9,0,0,0 + .rva se_handler +___ +} + +sub reg_part { +my ($reg,$conv)=@_; + if ($reg =~ /%r[0-9]+/) { $reg .= $conv; } + elsif ($conv eq "b") { $reg =~ s/%[er]([^x]+)x?/%$1l/; } + elsif ($conv eq "w") { $reg =~ s/%[er](.+)/%$1/; } + elsif ($conv eq "d") { $reg =~ s/%[er](.+)/%e$1/; } + return $reg; +} + +$code =~ s/(%[a-z0-9]+)#([bwd])/reg_part($1,$2)/gem; +$code =~ s/\`([^\`]*)\`/eval $1/gem; +$code =~ s/pinsrw\s+\$0,/movd /gm; + +$code =~ s/#md5#//gm if ($md5); +$code =~ s/#rc4#//gm if ($rc4); + +print $code; + +close STDOUT; |