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source: vbox/trunk/src/libs/openssl-1.1.1l/crypto/rc4/asm/rc4-md5-x86_64.pl@ 91772

Last change on this file since 91772 was 91772, checked in by vboxsync, 3 years ago

openssl-1.1.1l: Applied and adjusted our OpenSSL changes to 1.1.1l. bugref:10126

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1#! /usr/bin/env perl
2# Copyright 2011-2020 The OpenSSL Project Authors. All Rights Reserved.
3#
4# Licensed under the OpenSSL license (the "License"). You may not use
5# this file except in compliance with the License. You can obtain a copy
6# in the file LICENSE in the source distribution or at
7# https://www.openssl.org/source/license.html
8
9#
10# ====================================================================
11# Written by Andy Polyakov <[email protected]> for the OpenSSL
12# project. The module is, however, dual licensed under OpenSSL and
13# CRYPTOGAMS licenses depending on where you obtain it. For further
14# details see http://www.openssl.org/~appro/cryptogams/.
15# ====================================================================
16
17# June 2011
18#
19# This is RC4+MD5 "stitch" implementation. The idea, as spelled in
20# http://download.intel.com/design/intarch/papers/323686.pdf, is that
21# since both algorithms exhibit instruction-level parallelism, ILP,
22# below theoretical maximum, interleaving them would allow to utilize
23# processor resources better and achieve better performance. RC4
24# instruction sequence is virtually identical to rc4-x86_64.pl, which
25# is heavily based on submission by Maxim Perminov, Maxim Locktyukhin
26# and Jim Guilford of Intel. MD5 is fresh implementation aiming to
27# minimize register usage, which was used as "main thread" with RC4
28# weaved into it, one RC4 round per one MD5 round. In addition to the
29# stiched subroutine the script can generate standalone replacement
30# md5_block_asm_data_order and RC4. Below are performance numbers in
31# cycles per processed byte, less is better, for these the standalone
32# subroutines, sum of them, and stitched one:
33#
34# RC4 MD5 RC4+MD5 stitch gain
35# Opteron 6.5(*) 5.4 11.9 7.0 +70%(*)
36# Core2 6.5 5.8 12.3 7.7 +60%
37# Westmere 4.3 5.2 9.5 7.0 +36%
38# Sandy Bridge 4.2 5.5 9.7 6.8 +43%
39# Ivy Bridge 4.1 5.2 9.3 6.0 +54%
40# Haswell 4.0 5.0 9.0 5.7 +60%
41# Skylake 6.3(**) 5.0 11.3 5.3 +110%
42# Atom 9.3 6.5 15.8 11.1 +42%
43# VIA Nano 6.3 5.4 11.7 8.6 +37%
44# Bulldozer 4.5 5.4 9.9 7.7 +29%
45#
46# (*) rc4-x86_64.pl delivers 5.3 on Opteron, so real improvement
47# is +53%...
48# (**) unidentified anomaly;
49
50my ($rc4,$md5)=(1,1); # what to generate?
51my $D="#" if (!$md5); # if set to "#", MD5 is stitched into RC4(),
52 # but its result is discarded. Idea here is
53 # to be able to use 'openssl speed rc4' for
54 # benchmarking the stitched subroutine...
55
56my $flavour = shift;
57my $output = shift;
58if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
59
60my $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
61
62$0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; my $xlate;
63( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
64( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
65die "can't locate x86_64-xlate.pl";
66
67open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\"";
68*STDOUT=*OUT;
69
70my ($dat,$in0,$out,$ctx,$inp,$len, $func,$nargs);
71
72if ($rc4 && !$md5) {
73 ($dat,$len,$in0,$out) = ("%rdi","%rsi","%rdx","%rcx");
74 $func="RC4"; $nargs=4;
75} elsif ($md5 && !$rc4) {
76 ($ctx,$inp,$len) = ("%rdi","%rsi","%rdx");
77 $func="md5_block_asm_data_order"; $nargs=3;
78} else {
79 ($dat,$in0,$out,$ctx,$inp,$len) = ("%rdi","%rsi","%rdx","%rcx","%r8","%r9");
80 $func="rc4_md5_enc"; $nargs=6;
81 # void rc4_md5_enc(
82 # RC4_KEY *key, #
83 # const void *in0, # RC4 input
84 # void *out, # RC4 output
85 # MD5_CTX *ctx, #
86 # const void *inp, # MD5 input
87 # size_t len); # number of 64-byte blocks
88}
89
90my @K=( 0xd76aa478,0xe8c7b756,0x242070db,0xc1bdceee,
91 0xf57c0faf,0x4787c62a,0xa8304613,0xfd469501,
92 0x698098d8,0x8b44f7af,0xffff5bb1,0x895cd7be,
93 0x6b901122,0xfd987193,0xa679438e,0x49b40821,
94
95 0xf61e2562,0xc040b340,0x265e5a51,0xe9b6c7aa,
96 0xd62f105d,0x02441453,0xd8a1e681,0xe7d3fbc8,
97 0x21e1cde6,0xc33707d6,0xf4d50d87,0x455a14ed,
98 0xa9e3e905,0xfcefa3f8,0x676f02d9,0x8d2a4c8a,
99
100 0xfffa3942,0x8771f681,0x6d9d6122,0xfde5380c,
101 0xa4beea44,0x4bdecfa9,0xf6bb4b60,0xbebfbc70,
102 0x289b7ec6,0xeaa127fa,0xd4ef3085,0x04881d05,
103 0xd9d4d039,0xe6db99e5,0x1fa27cf8,0xc4ac5665,
104
105 0xf4292244,0x432aff97,0xab9423a7,0xfc93a039,
106 0x655b59c3,0x8f0ccc92,0xffeff47d,0x85845dd1,
107 0x6fa87e4f,0xfe2ce6e0,0xa3014314,0x4e0811a1,
108 0xf7537e82,0xbd3af235,0x2ad7d2bb,0xeb86d391 );
109
110my @V=("%r8d","%r9d","%r10d","%r11d"); # MD5 registers
111my $tmp="%r12d";
112
113my @XX=("%rbp","%rsi"); # RC4 registers
114my @TX=("%rax","%rbx");
115my $YY="%rcx";
116my $TY="%rdx";
117
118my $MOD=32; # 16, 32 or 64
119
120$code.=<<___;
121.text
122.align 16
123
124.globl $func
125.type $func,\@function,$nargs
126$func:
127.cfi_startproc
128 cmp \$0,$len
129 je .Labort
130 push %rbx
131.cfi_push %rbx
132 push %rbp
133.cfi_push %rbp
134 push %r12
135.cfi_push %r12
136 push %r13
137.cfi_push %r13
138 push %r14
139.cfi_push %r14
140 push %r15
141.cfi_push %r15
142 sub \$40,%rsp
143.cfi_adjust_cfa_offset 40
144.Lbody:
145___
146if ($rc4) {
147$code.=<<___;
148$D#md5# mov $ctx,%r11 # reassign arguments
149 mov $len,%r12
150 mov $in0,%r13
151 mov $out,%r14
152$D#md5# mov $inp,%r15
153___
154 $ctx="%r11" if ($md5); # reassign arguments
155 $len="%r12";
156 $in0="%r13";
157 $out="%r14";
158 $inp="%r15" if ($md5);
159 $inp=$in0 if (!$md5);
160$code.=<<___;
161 xor $XX[0],$XX[0]
162 xor $YY,$YY
163
164 lea 8($dat),$dat
165 mov -8($dat),$XX[0]#b
166 mov -4($dat),$YY#b
167
168 inc $XX[0]#b
169 sub $in0,$out
170 movl ($dat,$XX[0],4),$TX[0]#d
171___
172$code.=<<___ if (!$md5);
173 xor $TX[1],$TX[1]
174 test \$-128,$len
175 jz .Loop1
176 sub $XX[0],$TX[1]
177 and \$`$MOD-1`,$TX[1]
178 jz .Loop${MOD}_is_hot
179 sub $TX[1],$len
180.Loop${MOD}_warmup:
181 add $TX[0]#b,$YY#b
182 movl ($dat,$YY,4),$TY#d
183 movl $TX[0]#d,($dat,$YY,4)
184 movl $TY#d,($dat,$XX[0],4)
185 add $TY#b,$TX[0]#b
186 inc $XX[0]#b
187 movl ($dat,$TX[0],4),$TY#d
188 movl ($dat,$XX[0],4),$TX[0]#d
189 xorb ($in0),$TY#b
190 movb $TY#b,($out,$in0)
191 lea 1($in0),$in0
192 dec $TX[1]
193 jnz .Loop${MOD}_warmup
194
195 mov $YY,$TX[1]
196 xor $YY,$YY
197 mov $TX[1]#b,$YY#b
198
199.Loop${MOD}_is_hot:
200 mov $len,32(%rsp) # save original $len
201 shr \$6,$len # number of 64-byte blocks
202___
203 if ($D && !$md5) { # stitch in dummy MD5
204 $md5=1;
205 $ctx="%r11";
206 $inp="%r15";
207 $code.=<<___;
208 mov %rsp,$ctx
209 mov $in0,$inp
210___
211 }
212}
213$code.=<<___;
214#rc4# add $TX[0]#b,$YY#b
215#rc4# lea ($dat,$XX[0],4),$XX[1]
216 shl \$6,$len
217 add $inp,$len # pointer to the end of input
218 mov $len,16(%rsp)
219
220#md5# mov $ctx,24(%rsp) # save pointer to MD5_CTX
221#md5# mov 0*4($ctx),$V[0] # load current hash value from MD5_CTX
222#md5# mov 1*4($ctx),$V[1]
223#md5# mov 2*4($ctx),$V[2]
224#md5# mov 3*4($ctx),$V[3]
225 jmp .Loop
226
227.align 16
228.Loop:
229#md5# mov $V[0],0*4(%rsp) # put aside current hash value
230#md5# mov $V[1],1*4(%rsp)
231#md5# mov $V[2],2*4(%rsp)
232#md5# mov $V[3],$tmp # forward reference
233#md5# mov $V[3],3*4(%rsp)
234___
235
236sub R0 {
237 my ($i,$a,$b,$c,$d)=@_;
238 my @rot0=(7,12,17,22);
239 my $j=$i%16;
240 my $k=$i%$MOD;
241 my $xmm="%xmm".($j&1);
242 $code.=" movdqu ($in0),%xmm2\n" if ($rc4 && $j==15);
243 $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
244 $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
245 $code.=<<___;
246#rc4# movl ($dat,$YY,4),$TY#d
247#md5# xor $c,$tmp
248#rc4# movl $TX[0]#d,($dat,$YY,4)
249#md5# and $b,$tmp
250#md5# add 4*`$j`($inp),$a
251#rc4# add $TY#b,$TX[0]#b
252#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d
253#md5# add \$$K[$i],$a
254#md5# xor $d,$tmp
255#rc4# movz $TX[0]#b,$TX[0]#d
256#rc4# movl $TY#d,4*$k($XX[1])
257#md5# add $tmp,$a
258#rc4# add $TX[1]#b,$YY#b
259#md5# rol \$$rot0[$j%4],$a
260#md5# mov `$j==15?"$b":"$c"`,$tmp # forward reference
261#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n
262#md5# add $b,$a
263___
264 $code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1);
265 mov $YY,$XX[1]
266 xor $YY,$YY # keyword to partial register
267 mov $XX[1]#b,$YY#b
268 lea ($dat,$XX[0],4),$XX[1]
269___
270 $code.=<<___ if ($rc4 && $j==15);
271 psllq \$8,%xmm1
272 pxor %xmm0,%xmm2
273 pxor %xmm1,%xmm2
274___
275}
276sub R1 {
277 my ($i,$a,$b,$c,$d)=@_;
278 my @rot1=(5,9,14,20);
279 my $j=$i%16;
280 my $k=$i%$MOD;
281 my $xmm="%xmm".($j&1);
282 $code.=" movdqu 16($in0),%xmm3\n" if ($rc4 && $j==15);
283 $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
284 $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
285 $code.=<<___;
286#rc4# movl ($dat,$YY,4),$TY#d
287#md5# xor $b,$tmp
288#rc4# movl $TX[0]#d,($dat,$YY,4)
289#md5# and $d,$tmp
290#md5# add 4*`((1+5*$j)%16)`($inp),$a
291#rc4# add $TY#b,$TX[0]#b
292#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d
293#md5# add \$$K[$i],$a
294#md5# xor $c,$tmp
295#rc4# movz $TX[0]#b,$TX[0]#d
296#rc4# movl $TY#d,4*$k($XX[1])
297#md5# add $tmp,$a
298#rc4# add $TX[1]#b,$YY#b
299#md5# rol \$$rot1[$j%4],$a
300#md5# mov `$j==15?"$c":"$b"`,$tmp # forward reference
301#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n
302#md5# add $b,$a
303___
304 $code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1);
305 mov $YY,$XX[1]
306 xor $YY,$YY # keyword to partial register
307 mov $XX[1]#b,$YY#b
308 lea ($dat,$XX[0],4),$XX[1]
309___
310 $code.=<<___ if ($rc4 && $j==15);
311 psllq \$8,%xmm1
312 pxor %xmm0,%xmm3
313 pxor %xmm1,%xmm3
314___
315}
316sub R2 {
317 my ($i,$a,$b,$c,$d)=@_;
318 my @rot2=(4,11,16,23);
319 my $j=$i%16;
320 my $k=$i%$MOD;
321 my $xmm="%xmm".($j&1);
322 $code.=" movdqu 32($in0),%xmm4\n" if ($rc4 && $j==15);
323 $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
324 $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
325 $code.=<<___;
326#rc4# movl ($dat,$YY,4),$TY#d
327#md5# xor $c,$tmp
328#rc4# movl $TX[0]#d,($dat,$YY,4)
329#md5# xor $b,$tmp
330#md5# add 4*`((5+3*$j)%16)`($inp),$a
331#rc4# add $TY#b,$TX[0]#b
332#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d
333#md5# add \$$K[$i],$a
334#rc4# movz $TX[0]#b,$TX[0]#d
335#md5# add $tmp,$a
336#rc4# movl $TY#d,4*$k($XX[1])
337#rc4# add $TX[1]#b,$YY#b
338#md5# rol \$$rot2[$j%4],$a
339#md5# mov `$j==15?"\\\$-1":"$c"`,$tmp # forward reference
340#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n
341#md5# add $b,$a
342___
343 $code.=<<___ if ($rc4 && $j==15 && $k==$MOD-1);
344 mov $YY,$XX[1]
345 xor $YY,$YY # keyword to partial register
346 mov $XX[1]#b,$YY#b
347 lea ($dat,$XX[0],4),$XX[1]
348___
349 $code.=<<___ if ($rc4 && $j==15);
350 psllq \$8,%xmm1
351 pxor %xmm0,%xmm4
352 pxor %xmm1,%xmm4
353___
354}
355sub R3 {
356 my ($i,$a,$b,$c,$d)=@_;
357 my @rot3=(6,10,15,21);
358 my $j=$i%16;
359 my $k=$i%$MOD;
360 my $xmm="%xmm".($j&1);
361 $code.=" movdqu 48($in0),%xmm5\n" if ($rc4 && $j==15);
362 $code.=" add \$$MOD,$XX[0]#b\n" if ($rc4 && $j==15 && $k==$MOD-1);
363 $code.=" pxor $xmm,$xmm\n" if ($rc4 && $j<=1);
364 $code.=<<___;
365#rc4# movl ($dat,$YY,4),$TY#d
366#md5# xor $d,$tmp
367#rc4# movl $TX[0]#d,($dat,$YY,4)
368#md5# or $b,$tmp
369#md5# add 4*`((7*$j)%16)`($inp),$a
370#rc4# add $TY#b,$TX[0]#b
371#rc4# movl `4*(($k+1)%$MOD)`(`$k==$MOD-1?"$dat,$XX[0],4":"$XX[1]"`),$TX[1]#d
372#md5# add \$$K[$i],$a
373#rc4# movz $TX[0]#b,$TX[0]#d
374#md5# xor $c,$tmp
375#rc4# movl $TY#d,4*$k($XX[1])
376#md5# add $tmp,$a
377#rc4# add $TX[1]#b,$YY#b
378#md5# rol \$$rot3[$j%4],$a
379#md5# mov \$-1,$tmp # forward reference
380#rc4# pinsrw \$`($j>>1)&7`,($dat,$TX[0],4),$xmm\n
381#md5# add $b,$a
382___
383 $code.=<<___ if ($rc4 && $j==15);
384 mov $XX[0],$XX[1]
385 xor $XX[0],$XX[0] # keyword to partial register
386 mov $XX[1]#b,$XX[0]#b
387 mov $YY,$XX[1]
388 xor $YY,$YY # keyword to partial register
389 mov $XX[1]#b,$YY#b
390 lea ($dat,$XX[0],4),$XX[1]
391 psllq \$8,%xmm1
392 pxor %xmm0,%xmm5
393 pxor %xmm1,%xmm5
394___
395}
396
397my $i=0;
398for(;$i<16;$i++) { R0($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); }
399for(;$i<32;$i++) { R1($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); }
400for(;$i<48;$i++) { R2($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); }
401for(;$i<64;$i++) { R3($i,@V); unshift(@V,pop(@V)); push(@TX,shift(@TX)); }
402
403$code.=<<___;
404#md5# add 0*4(%rsp),$V[0] # accumulate hash value
405#md5# add 1*4(%rsp),$V[1]
406#md5# add 2*4(%rsp),$V[2]
407#md5# add 3*4(%rsp),$V[3]
408
409#rc4# movdqu %xmm2,($out,$in0) # write RC4 output
410#rc4# movdqu %xmm3,16($out,$in0)
411#rc4# movdqu %xmm4,32($out,$in0)
412#rc4# movdqu %xmm5,48($out,$in0)
413#md5# lea 64($inp),$inp
414#rc4# lea 64($in0),$in0
415 cmp 16(%rsp),$inp # are we done?
416 jb .Loop
417
418#md5# mov 24(%rsp),$len # restore pointer to MD5_CTX
419#rc4# sub $TX[0]#b,$YY#b # correct $YY
420#md5# mov $V[0],0*4($len) # write MD5_CTX
421#md5# mov $V[1],1*4($len)
422#md5# mov $V[2],2*4($len)
423#md5# mov $V[3],3*4($len)
424___
425$code.=<<___ if ($rc4 && (!$md5 || $D));
426 mov 32(%rsp),$len # restore original $len
427 and \$63,$len # remaining bytes
428 jnz .Loop1
429 jmp .Ldone
430
431.align 16
432.Loop1:
433 add $TX[0]#b,$YY#b
434 movl ($dat,$YY,4),$TY#d
435 movl $TX[0]#d,($dat,$YY,4)
436 movl $TY#d,($dat,$XX[0],4)
437 add $TY#b,$TX[0]#b
438 inc $XX[0]#b
439 movl ($dat,$TX[0],4),$TY#d
440 movl ($dat,$XX[0],4),$TX[0]#d
441 xorb ($in0),$TY#b
442 movb $TY#b,($out,$in0)
443 lea 1($in0),$in0
444 dec $len
445 jnz .Loop1
446
447.Ldone:
448___
449$code.=<<___;
450#rc4# sub \$1,$XX[0]#b
451#rc4# movl $XX[0]#d,-8($dat)
452#rc4# movl $YY#d,-4($dat)
453
454 mov 40(%rsp),%r15
455.cfi_restore %r15
456 mov 48(%rsp),%r14
457.cfi_restore %r14
458 mov 56(%rsp),%r13
459.cfi_restore %r13
460 mov 64(%rsp),%r12
461.cfi_restore %r12
462 mov 72(%rsp),%rbp
463.cfi_restore %rbp
464 mov 80(%rsp),%rbx
465.cfi_restore %rbx
466 lea 88(%rsp),%rsp
467.cfi_adjust_cfa_offset -88
468.Lepilogue:
469.Labort:
470 ret
471.cfi_endproc
472.size $func,.-$func
473___
474
475if ($rc4 && $D) { # sole purpose of this section is to provide
476 # option to use the generated module as drop-in
477 # replacement for rc4-x86_64.pl for debugging
478 # and testing purposes...
479my ($idx,$ido)=("%r8","%r9");
480my ($dat,$len,$inp)=("%rdi","%rsi","%rdx");
481
482$code.=<<___;
483.globl RC4_set_key
484.type RC4_set_key,\@function,3
485.align 16
486RC4_set_key:
487.cfi_startproc
488 lea 8($dat),$dat
489 lea ($inp,$len),$inp
490 neg $len
491 mov $len,%rcx
492 xor %eax,%eax
493 xor $ido,$ido
494 xor %r10,%r10
495 xor %r11,%r11
496 jmp .Lw1stloop
497
498.align 16
499.Lw1stloop:
500 mov %eax,($dat,%rax,4)
501 add \$1,%al
502 jnc .Lw1stloop
503
504 xor $ido,$ido
505 xor $idx,$idx
506.align 16
507.Lw2ndloop:
508 mov ($dat,$ido,4),%r10d
509 add ($inp,$len,1),$idx#b
510 add %r10b,$idx#b
511 add \$1,$len
512 mov ($dat,$idx,4),%r11d
513 cmovz %rcx,$len
514 mov %r10d,($dat,$idx,4)
515 mov %r11d,($dat,$ido,4)
516 add \$1,$ido#b
517 jnc .Lw2ndloop
518
519 xor %eax,%eax
520 mov %eax,-8($dat)
521 mov %eax,-4($dat)
522 ret
523.cfi_endproc
524.size RC4_set_key,.-RC4_set_key
525
526.globl RC4_options
527.type RC4_options,\@abi-omnipotent
528.align 16
529RC4_options:
530 lea .Lopts(%rip),%rax
531 ret
532.align 64
533.Lopts:
534.asciz "rc4(64x,int)"
535.align 64
536.size RC4_options,.-RC4_options
537___
538}
539# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
540# CONTEXT *context,DISPATCHER_CONTEXT *disp)
541if ($win64) {
542my $rec="%rcx";
543my $frame="%rdx";
544my $context="%r8";
545my $disp="%r9";
546
547$code.=<<___;
548.extern __imp_RtlVirtualUnwind
549.type se_handler,\@abi-omnipotent
550.align 16
551se_handler:
552 push %rsi
553 push %rdi
554 push %rbx
555 push %rbp
556 push %r12
557 push %r13
558 push %r14
559 push %r15
560 pushfq
561 sub \$64,%rsp
562
563 mov 120($context),%rax # pull context->Rax
564 mov 248($context),%rbx # pull context->Rip
565
566 lea .Lbody(%rip),%r10
567 cmp %r10,%rbx # context->Rip<.Lbody
568 jb .Lin_prologue
569
570 mov 152($context),%rax # pull context->Rsp
571
572 lea .Lepilogue(%rip),%r10
573 cmp %r10,%rbx # context->Rip>=.Lepilogue
574 jae .Lin_prologue
575
576 mov 40(%rax),%r15
577 mov 48(%rax),%r14
578 mov 56(%rax),%r13
579 mov 64(%rax),%r12
580 mov 72(%rax),%rbp
581 mov 80(%rax),%rbx
582 lea 88(%rax),%rax
583
584 mov %rbx,144($context) # restore context->Rbx
585 mov %rbp,160($context) # restore context->Rbp
586 mov %r12,216($context) # restore context->R12
587 mov %r13,224($context) # restore context->R12
588 mov %r14,232($context) # restore context->R14
589 mov %r15,240($context) # restore context->R15
590
591.Lin_prologue:
592 mov 8(%rax),%rdi
593 mov 16(%rax),%rsi
594 mov %rax,152($context) # restore context->Rsp
595 mov %rsi,168($context) # restore context->Rsi
596 mov %rdi,176($context) # restore context->Rdi
597
598 mov 40($disp),%rdi # disp->ContextRecord
599 mov $context,%rsi # context
600 mov \$154,%ecx # sizeof(CONTEXT)
601 .long 0xa548f3fc # cld; rep movsq
602
603 mov $disp,%rsi
604 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
605 mov 8(%rsi),%rdx # arg2, disp->ImageBase
606 mov 0(%rsi),%r8 # arg3, disp->ControlPc
607 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
608 mov 40(%rsi),%r10 # disp->ContextRecord
609 lea 56(%rsi),%r11 # &disp->HandlerData
610 lea 24(%rsi),%r12 # &disp->EstablisherFrame
611 mov %r10,32(%rsp) # arg5
612 mov %r11,40(%rsp) # arg6
613 mov %r12,48(%rsp) # arg7
614 mov %rcx,56(%rsp) # arg8, (NULL)
615 call *__imp_RtlVirtualUnwind(%rip)
616
617 mov \$1,%eax # ExceptionContinueSearch
618 add \$64,%rsp
619 popfq
620 pop %r15
621 pop %r14
622 pop %r13
623 pop %r12
624 pop %rbp
625 pop %rbx
626 pop %rdi
627 pop %rsi
628 ret
629.size se_handler,.-se_handler
630
631.section .pdata
632.align 4
633 .rva .LSEH_begin_$func
634 .rva .LSEH_end_$func
635 .rva .LSEH_info_$func
636
637.section .xdata
638.align 8
639.LSEH_info_$func:
640 .byte 9,0,0,0
641 .rva se_handler
642___
643}
644
645sub reg_part {
646my ($reg,$conv)=@_;
647 if ($reg =~ /%r[0-9]+/) { $reg .= $conv; }
648 elsif ($conv eq "b") { $reg =~ s/%[er]([^x]+)x?/%$1l/; }
649 elsif ($conv eq "w") { $reg =~ s/%[er](.+)/%$1/; }
650 elsif ($conv eq "d") { $reg =~ s/%[er](.+)/%e$1/; }
651 return $reg;
652}
653
654$code =~ s/(%[a-z0-9]+)#([bwd])/reg_part($1,$2)/gem;
655$code =~ s/\`([^\`]*)\`/eval $1/gem;
656$code =~ s/pinsrw\s+\$0,/movd /gm;
657
658$code =~ s/#md5#//gm if ($md5);
659$code =~ s/#rc4#//gm if ($rc4);
660
661print $code;
662
663close STDOUT or die "error closing STDOUT: $!";
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