633 lines
16 KiB
Perl
633 lines
16 KiB
Perl
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#!/usr/bin/env perl
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#
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# ====================================================================
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# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
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# project. The module is, however, dual licensed under OpenSSL and
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# CRYPTOGAMS licenses depending on where you obtain it. For further
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# details see http://www.openssl.org/~appro/cryptogams/.
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# ====================================================================
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# June 2011
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#
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# This is RC4+MD5 "stitch" implementation. The idea, as spelled in
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# http://download.intel.com/design/intarch/papers/323686.pdf, is that
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# since both algorithms exhibit instruction-level parallelism, ILP,
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# below theoretical maximum, interleaving them would allow to utilize
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# processor resources better and achieve better performance. RC4
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# instruction sequence is virtually identical to rc4-x86_64.pl, which
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# is heavily based on submission by Maxim Perminov, Maxim Locktyukhin
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# and Jim Guilford of Intel. MD5 is fresh implementation aiming to
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# minimize register usage, which was used as "main thread" with RC4
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# weaved into it, one RC4 round per one MD5 round. In addition to the
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# stiched subroutine the script can generate standalone replacement
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# md5_block_asm_data_order and RC4. Below are performance numbers in
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# cycles per processed byte, less is better, for these the standalone
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# subroutines, sum of them, and stitched one:
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#
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# RC4 MD5 RC4+MD5 stitch gain
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# Opteron 6.5(*) 5.4 11.9 7.0 +70%(*)
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# Core2 6.5 5.8 12.3 7.7 +60%
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# Westmere 4.3 5.2 9.5 7.0 +36%
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# Sandy Bridge 4.2 5.5 9.7 6.8 +43%
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# Atom 9.3 6.5 15.8 11.1 +42%
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#
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# (*) rc4-x86_64.pl delivers 5.3 on Opteron, so real improvement
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# is +53%...
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my ($rc4,$md5)=(1,1); # what to generate?
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my $D="#" if (!$md5); # if set to "#", MD5 is stitched into RC4(),
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# but its result is discarded. Idea here is
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# to be able to use 'openssl speed rc4' for
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# benchmarking the stitched subroutine...
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my $flavour = shift;
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my $output = shift;
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if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
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my $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; my $xlate;
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( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
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( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
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die "can't locate x86_64-xlate.pl";
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open OUT,"| \"$^X\" $xlate $flavour $output";
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*STDOUT=*OUT;
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my ($dat,$in0,$out,$ctx,$inp,$len, $func,$nargs);
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if ($rc4 && !$md5) {
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($dat,$len,$in0,$out) = ("%rdi","%rsi","%rdx","%rcx");
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$func="RC4"; $nargs=4;
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} elsif ($md5 && !$rc4) {
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($ctx,$inp,$len) = ("%rdi","%rsi","%rdx");
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$func="md5_block_asm_data_order"; $nargs=3;
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} else {
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($dat,$in0,$out,$ctx,$inp,$len) = ("%rdi","%rsi","%rdx","%rcx","%r8","%r9");
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$func="rc4_md5_enc"; $nargs=6;
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# void rc4_md5_enc(
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# RC4_KEY *key, #
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# const void *in0, # RC4 input
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# void *out, # RC4 output
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# MD5_CTX *ctx, #
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# const void *inp, # MD5 input
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# size_t len); # number of 64-byte blocks
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}
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my @K=( 0xd76aa478,0xe8c7b756,0x242070db,0xc1bdceee,
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0xf57c0faf,0x4787c62a,0xa8304613,0xfd469501,
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0x698098d8,0x8b44f7af,0xffff5bb1,0x895cd7be,
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0x6b901122,0xfd987193,0xa679438e,0x49b40821,
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0xf61e2562,0xc040b340,0x265e5a51,0xe9b6c7aa,
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0xd62f105d,0x02441453,0xd8a1e681,0xe7d3fbc8,
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0x21e1cde6,0xc33707d6,0xf4d50d87,0x455a14ed,
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0xa9e3e905,0xfcefa3f8,0x676f02d9,0x8d2a4c8a,
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0xfffa3942,0x8771f681,0x6d9d6122,0xfde5380c,
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0xa4beea44,0x4bdecfa9,0xf6bb4b60,0xbebfbc70,
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0x289b7ec6,0xeaa127fa,0xd4ef3085,0x04881d05,
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0xd9d4d039,0xe6db99e5,0x1fa27cf8,0xc4ac5665,
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0xf4292244,0x432aff97,0xab9423a7,0xfc93a039,
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0x655b59c3,0x8f0ccc92,0xffeff47d,0x85845dd1,
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0x6fa87e4f,0xfe2ce6e0,0xa3014314,0x4e0811a1,
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0xf7537e82,0xbd3af235,0x2ad7d2bb,0xeb86d391 );
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my @V=("%r8d","%r9d","%r10d","%r11d"); # MD5 registers
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my $tmp="%r12d";
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my @XX=("%rbp","%rsi"); # RC4 registers
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my @TX=("%rax","%rbx");
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my $YY="%rcx";
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my $TY="%rdx";
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my $MOD=32; # 16, 32 or 64
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$code.=<<___;
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.text
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.align 16
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.globl $func
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.type $func,\@function,$nargs
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$func:
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cmp \$0,$len
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je .Labort
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push %rbx
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push %rbp
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push %r12
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push %r13
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push %r14
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push %r15
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sub \$40,%rsp
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.Lbody:
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___
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if ($rc4) {
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$code.=<<___;
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$D#md5# mov $ctx,%r11 # reassign arguments
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mov $len,%r12
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mov $in0,%r13
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mov $out,%r14
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$D#md5# mov $inp,%r15
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___
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$ctx="%r11" if ($md5); # reassign arguments
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$len="%r12";
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$in0="%r13";
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$out="%r14";
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$inp="%r15" if ($md5);
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$inp=$in0 if (!$md5);
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$code.=<<___;
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xor $XX[0],$XX[0]
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xor $YY,$YY
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lea 8($dat),$dat
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mov -8($dat),$XX[0]#b
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mov -4($dat),$YY#b
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inc $XX[0]#b
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sub $in0,$out
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movl ($dat,$XX[0],4),$TX[0]#d
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___
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$code.=<<___ if (!$md5);
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xor $TX[1],$TX[1]
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test \$-128,$len
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jz .Loop1
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sub $XX[0],$TX[1]
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and \$`$MOD-1`,$TX[1]
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jz .Loop${MOD}_is_hot
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sub $TX[1],$len
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.Loop${MOD}_warmup:
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add $TX[0]#b,$YY#b
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movl ($dat,$YY,4),$TY#d
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movl $TX[0]#d,($dat,$YY,4)
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movl $TY#d,($dat,$XX[0],4)
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add $TY#b,$TX[0]#b
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inc $XX[0]#b
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movl ($dat,$TX[0],4),$TY#d
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movl ($dat,$XX[0],4),$TX[0]#d
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xorb ($in0),$TY#b
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movb $TY#b,($out,$in0)
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lea 1($in0),$in0
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dec $TX[1]
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jnz .Loop${MOD}_warmup
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mov $YY,$TX[1]
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xor $YY,$YY
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mov $TX[1]#b,$YY#b
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.Loop${MOD}_is_hot:
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mov $len,32(%rsp) # save original $len
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shr \$6,$len # number of 64-byte blocks
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___
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if ($D && !$md5) { # stitch in dummy MD5
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$md5=1;
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$ctx="%r11";
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$inp="%r15";
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$code.=<<___;
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mov %rsp,$ctx
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mov $in0,$inp
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___
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}
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}
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$code.=<<___;
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#rc4# add $TX[0]#b,$YY#b
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#rc4# lea ($dat,$XX[0],4),$XX[1]
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shl \$6,$len
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add $inp,$len # pointer to the end of input
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mov $len,16(%rsp)
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#md5# mov $ctx,24(%rsp) # save pointer to MD5_CTX
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#md5# mov 0*4($ctx),$V[0] # load current hash value from MD5_CTX
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#md5# mov 1*4($ctx),$V[1]
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#md5# mov 2*4($ctx),$V[2]
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#md5# mov 3*4($ctx),$V[3]
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jmp .Loop
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.align 16
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.Loop:
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#md5# mov $V[0],0*4(%rsp) # put aside current hash value
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#md5# mov $V[1],1*4(%rsp)
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#md5# mov $V[2],2*4(%rsp)
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#md5# mov $V[3],$tmp # forward reference
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#md5# mov $V[3],3*4(%rsp)
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___
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sub R0 {
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my ($i,$a,$b,$c,$d)=@_;
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my @rot0=(7,12,17,22);
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my $j=$i%16;
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my $k=$i%$MOD;
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my $xmm="%xmm".($j&1);
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$code.=" movdqu ($in0),%xmm2\n" if ($rc4 && $j==15);
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$code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
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$code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
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$code.=<<___;
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#rc4# movl ($dat,$YY,4),$TY#d
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#md5# xor $c,$tmp
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#rc4# movl $TX[0]#d,($dat,$YY,4)
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#md5# and $b,$tmp
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#md5# add 4*`$j`($inp),$a
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#rc4# add $TY#b,$TX[0]#b
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#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d
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#md5# add \$$K[$i],$a
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#md5# xor $d,$tmp
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#rc4# movz $TX[0]#b,$TX[0]#d
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#rc4# movl $TY#d,4*$k($XX[1])
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#md5# add $tmp,$a
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#rc4# add $TX[1]#b,$YY#b
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#md5# rol \$$rot0[$j%4],$a
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#md5# mov `$j==15?"$b":"$c"`,$tmp # forward reference
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#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n
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#md5# add $b,$a
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___
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$code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1);
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mov $YY,$XX[1]
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xor $YY,$YY # keyword to partial register
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mov $XX[1]#b,$YY#b
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lea ($dat,$XX[0],4),$XX[1]
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___
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$code.=<<___ if ($rc4 && $j==15);
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psllq \$8,%xmm1
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pxor %xmm0,%xmm2
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pxor %xmm1,%xmm2
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___
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}
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sub R1 {
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my ($i,$a,$b,$c,$d)=@_;
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my @rot1=(5,9,14,20);
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my $j=$i%16;
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my $k=$i%$MOD;
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my $xmm="%xmm".($j&1);
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$code.=" movdqu 16($in0),%xmm3\n" if ($rc4 && $j==15);
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$code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
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$code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
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$code.=<<___;
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#rc4# movl ($dat,$YY,4),$TY#d
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#md5# xor $b,$tmp
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#rc4# movl $TX[0]#d,($dat,$YY,4)
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#md5# and $d,$tmp
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#md5# add 4*`((1+5*$j)%16)`($inp),$a
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#rc4# add $TY#b,$TX[0]#b
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#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d
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#md5# add \$$K[$i],$a
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#md5# xor $c,$tmp
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#rc4# movz $TX[0]#b,$TX[0]#d
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#rc4# movl $TY#d,4*$k($XX[1])
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#md5# add $tmp,$a
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#rc4# add $TX[1]#b,$YY#b
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#md5# rol \$$rot1[$j%4],$a
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#md5# mov `$j==15?"$c":"$b"`,$tmp # forward reference
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#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n
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#md5# add $b,$a
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___
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$code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1);
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mov $YY,$XX[1]
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xor $YY,$YY # keyword to partial register
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mov $XX[1]#b,$YY#b
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lea ($dat,$XX[0],4),$XX[1]
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___
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$code.=<<___ if ($rc4 && $j==15);
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psllq \$8,%xmm1
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pxor %xmm0,%xmm3
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pxor %xmm1,%xmm3
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___
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}
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sub R2 {
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my ($i,$a,$b,$c,$d)=@_;
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my @rot2=(4,11,16,23);
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my $j=$i%16;
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my $k=$i%$MOD;
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my $xmm="%xmm".($j&1);
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$code.=" movdqu 32($in0),%xmm4\n" if ($rc4 && $j==15);
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$code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
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$code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
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$code.=<<___;
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#rc4# movl ($dat,$YY,4),$TY#d
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#md5# xor $c,$tmp
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#rc4# movl $TX[0]#d,($dat,$YY,4)
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#md5# xor $b,$tmp
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#md5# add 4*`((5+3*$j)%16)`($inp),$a
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#rc4# add $TY#b,$TX[0]#b
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|
|
#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;
|