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1#!/usr/bin/env perl
2#
3# ====================================================================
4# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
5# project. The module is, however, dual licensed under OpenSSL and
6# CRYPTOGAMS licenses depending on where you obtain it. For further
7# details see http://www.openssl.org/~appro/cryptogams/.
8# ====================================================================
9#
10# March, June 2010
11#
12# The module implements "4-bit" GCM GHASH function and underlying
13# single multiplication operation in GF(2^128). "4-bit" means that
14# it uses 256 bytes per-key table [+128 bytes shared table]. GHASH
15# function features so called "528B" variant utilizing additional
16# 256+16 bytes of per-key storage [+512 bytes shared table].
17# Performance results are for this streamed GHASH subroutine and are
18# expressed in cycles per processed byte, less is better:
19#
20# gcc 3.4.x(*) assembler
21#
22# P4 28.6 14.0 +100%
23# Opteron 19.3 7.7 +150%
24# Core2 17.8 8.1(**) +120%
25#
26# (*) comparison is not completely fair, because C results are
27# for vanilla "256B" implementation, while assembler results
28# are for "528B";-)
29# (**) it's mystery [to me] why Core2 result is not same as for
30# Opteron;
31
32# May 2010
33#
34# Add PCLMULQDQ version performing at 2.02 cycles per processed byte.
35# See ghash-x86.pl for background information and details about coding
36# techniques.
37#
38# Special thanks to David Woodhouse <dwmw2@infradead.org> for
39# providing access to a Westmere-based system on behalf of Intel
40# Open Source Technology Centre.
41
42$flavour = shift;
43$output = shift;
44if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
45
46$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
47
48$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
49( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
50( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
51die "can't locate x86_64-xlate.pl";
52
53open OUT,"| \"$^X\" $xlate $flavour $output";
54*STDOUT=*OUT;
55
56# common register layout
57$nlo="%rax";
58$nhi="%rbx";
59$Zlo="%r8";
60$Zhi="%r9";
61$tmp="%r10";
62$rem_4bit = "%r11";
63
64$Xi="%rdi";
65$Htbl="%rsi";
66
67# per-function register layout
68$cnt="%rcx";
69$rem="%rdx";
70
71sub LB() { my $r=shift; $r =~ s/%[er]([a-d])x/%\1l/ or
72 $r =~ s/%[er]([sd]i)/%\1l/ or
73 $r =~ s/%[er](bp)/%\1l/ or
74 $r =~ s/%(r[0-9]+)[d]?/%\1b/; $r; }
75
76sub AUTOLOAD() # thunk [simplified] 32-bit style perlasm
77{ my $opcode = $AUTOLOAD; $opcode =~ s/.*:://;
78 my $arg = pop;
79 $arg = "\$$arg" if ($arg*1 eq $arg);
80 $code .= "\t$opcode\t".join(',',$arg,reverse @_)."\n";
81}
82
83{ my $N;
84 sub loop() {
85 my $inp = shift;
86
87 $N++;
88$code.=<<___;
89 xor $nlo,$nlo
90 xor $nhi,$nhi
91 mov `&LB("$Zlo")`,`&LB("$nlo")`
92 mov `&LB("$Zlo")`,`&LB("$nhi")`
93 shl \$4,`&LB("$nlo")`
94 mov \$14,$cnt
95 mov 8($Htbl,$nlo),$Zlo
96 mov ($Htbl,$nlo),$Zhi
97 and \$0xf0,`&LB("$nhi")`
98 mov $Zlo,$rem
99 jmp .Loop$N
100
101.align 16
102.Loop$N:
103 shr \$4,$Zlo
104 and \$0xf,$rem
105 mov $Zhi,$tmp
106 mov ($inp,$cnt),`&LB("$nlo")`
107 shr \$4,$Zhi
108 xor 8($Htbl,$nhi),$Zlo
109 shl \$60,$tmp
110 xor ($Htbl,$nhi),$Zhi
111 mov `&LB("$nlo")`,`&LB("$nhi")`
112 xor ($rem_4bit,$rem,8),$Zhi
113 mov $Zlo,$rem
114 shl \$4,`&LB("$nlo")`
115 xor $tmp,$Zlo
116 dec $cnt
117 js .Lbreak$N
118
119 shr \$4,$Zlo
120 and \$0xf,$rem
121 mov $Zhi,$tmp
122 shr \$4,$Zhi
123 xor 8($Htbl,$nlo),$Zlo
124 shl \$60,$tmp
125 xor ($Htbl,$nlo),$Zhi
126 and \$0xf0,`&LB("$nhi")`
127 xor ($rem_4bit,$rem,8),$Zhi
128 mov $Zlo,$rem
129 xor $tmp,$Zlo
130 jmp .Loop$N
131
132.align 16
133.Lbreak$N:
134 shr \$4,$Zlo
135 and \$0xf,$rem
136 mov $Zhi,$tmp
137 shr \$4,$Zhi
138 xor 8($Htbl,$nlo),$Zlo
139 shl \$60,$tmp
140 xor ($Htbl,$nlo),$Zhi
141 and \$0xf0,`&LB("$nhi")`
142 xor ($rem_4bit,$rem,8),$Zhi
143 mov $Zlo,$rem
144 xor $tmp,$Zlo
145
146 shr \$4,$Zlo
147 and \$0xf,$rem
148 mov $Zhi,$tmp
149 shr \$4,$Zhi
150 xor 8($Htbl,$nhi),$Zlo
151 shl \$60,$tmp
152 xor ($Htbl,$nhi),$Zhi
153 xor $tmp,$Zlo
154 xor ($rem_4bit,$rem,8),$Zhi
155
156 bswap $Zlo
157 bswap $Zhi
158___
159}}
160
161$code=<<___;
162.text
163
164.globl gcm_gmult_4bit
165.type gcm_gmult_4bit,\@function,2
166.align 16
167gcm_gmult_4bit:
168 _CET_ENDBR
169 push %rbx
170 push %rbp # %rbp and %r12 are pushed exclusively in
171 push %r12 # order to reuse Win64 exception handler...
172.Lgmult_prologue:
173
174 movzb 15($Xi),$Zlo
175 lea .Lrem_4bit(%rip),$rem_4bit
176___
177 &loop ($Xi);
178$code.=<<___;
179 mov $Zlo,8($Xi)
180 mov $Zhi,($Xi)
181
182 mov 16(%rsp),%rbx
183 lea 24(%rsp),%rsp
184.Lgmult_epilogue:
185 ret
186.size gcm_gmult_4bit,.-gcm_gmult_4bit
187___
188
189# per-function register layout
190$inp="%rdx";
191$len="%rcx";
192$rem_8bit=$rem_4bit;
193
194$code.=<<___;
195.globl gcm_ghash_4bit
196.type gcm_ghash_4bit,\@function,4
197.align 16
198gcm_ghash_4bit:
199 _CET_ENDBR
200 push %rbx
201 push %rbp
202 push %r12
203 push %r13
204 push %r14
205 push %r15
206 sub \$280,%rsp
207.Lghash_prologue:
208 mov $inp,%r14 # reassign couple of args
209 mov $len,%r15
210___
211{ my $inp="%r14";
212 my $dat="%edx";
213 my $len="%r15";
214 my @nhi=("%ebx","%ecx");
215 my @rem=("%r12","%r13");
216 my $Hshr4="%rbp";
217
218 &sub ($Htbl,-128); # size optimization
219 &lea ($Hshr4,"16+128(%rsp)");
220 { my @lo =($nlo,$nhi);
221 my @hi =($Zlo,$Zhi);
222
223 &xor ($dat,$dat);
224 for ($i=0,$j=-2;$i<18;$i++,$j++) {
225 &mov ("$j(%rsp)",&LB($dat)) if ($i>1);
226 &or ($lo[0],$tmp) if ($i>1);
227 &mov (&LB($dat),&LB($lo[1])) if ($i>0 && $i<17);
228 &shr ($lo[1],4) if ($i>0 && $i<17);
229 &mov ($tmp,$hi[1]) if ($i>0 && $i<17);
230 &shr ($hi[1],4) if ($i>0 && $i<17);
231 &mov ("8*$j($Hshr4)",$hi[0]) if ($i>1);
232 &mov ($hi[0],"16*$i+0-128($Htbl)") if ($i<16);
233 &shl (&LB($dat),4) if ($i>0 && $i<17);
234 &mov ("8*$j-128($Hshr4)",$lo[0]) if ($i>1);
235 &mov ($lo[0],"16*$i+8-128($Htbl)") if ($i<16);
236 &shl ($tmp,60) if ($i>0 && $i<17);
237
238 push (@lo,shift(@lo));
239 push (@hi,shift(@hi));
240 }
241 }
242 &add ($Htbl,-128);
243 &mov ($Zlo,"8($Xi)");
244 &mov ($Zhi,"0($Xi)");
245 &add ($len,$inp); # pointer to the end of data
246 &lea ($rem_8bit,".Lrem_8bit(%rip)");
247 &jmp (".Louter_loop");
248
249$code.=".align 16\n.Louter_loop:\n";
250 &xor ($Zhi,"($inp)");
251 &mov ("%rdx","8($inp)");
252 &lea ($inp,"16($inp)");
253 &xor ("%rdx",$Zlo);
254 &mov ("($Xi)",$Zhi);
255 &mov ("8($Xi)","%rdx");
256 &shr ("%rdx",32);
257
258 &xor ($nlo,$nlo);
259 &rol ($dat,8);
260 &mov (&LB($nlo),&LB($dat));
261 &movz ($nhi[0],&LB($dat));
262 &shl (&LB($nlo),4);
263 &shr ($nhi[0],4);
264
265 for ($j=11,$i=0;$i<15;$i++) {
266 &rol ($dat,8);
267 &xor ($Zlo,"8($Htbl,$nlo)") if ($i>0);
268 &xor ($Zhi,"($Htbl,$nlo)") if ($i>0);
269 &mov ($Zlo,"8($Htbl,$nlo)") if ($i==0);
270 &mov ($Zhi,"($Htbl,$nlo)") if ($i==0);
271
272 &mov (&LB($nlo),&LB($dat));
273 &xor ($Zlo,$tmp) if ($i>0);
274 &movzw ($rem[1],"($rem_8bit,$rem[1],2)") if ($i>0);
275
276 &movz ($nhi[1],&LB($dat));
277 &shl (&LB($nlo),4);
278 &movzb ($rem[0],"(%rsp,$nhi[0])");
279
280 &shr ($nhi[1],4) if ($i<14);
281 &and ($nhi[1],0xf0) if ($i==14);
282 &shl ($rem[1],48) if ($i>0);
283 &xor ($rem[0],$Zlo);
284
285 &mov ($tmp,$Zhi);
286 &xor ($Zhi,$rem[1]) if ($i>0);
287 &shr ($Zlo,8);
288
289 &movz ($rem[0],&LB($rem[0]));
290 &mov ($dat,"$j($Xi)") if (--$j%4==0 && $j>=0);
291 &shr ($Zhi,8);
292
293 &xor ($Zlo,"-128($Hshr4,$nhi[0],8)");
294 &shl ($tmp,56);
295 &xor ($Zhi,"($Hshr4,$nhi[0],8)");
296
297 unshift (@nhi,pop(@nhi)); # "rotate" registers
298 unshift (@rem,pop(@rem));
299 }
300 &movzw ($rem[1],"($rem_8bit,$rem[1],2)");
301 &xor ($Zlo,"8($Htbl,$nlo)");
302 &xor ($Zhi,"($Htbl,$nlo)");
303
304 &shl ($rem[1],48);
305 &xor ($Zlo,$tmp);
306
307 &xor ($Zhi,$rem[1]);
308 &movz ($rem[0],&LB($Zlo));
309 &shr ($Zlo,4);
310
311 &mov ($tmp,$Zhi);
312 &shl (&LB($rem[0]),4);
313 &shr ($Zhi,4);
314
315 &xor ($Zlo,"8($Htbl,$nhi[0])");
316 &movzw ($rem[0],"($rem_8bit,$rem[0],2)");
317 &shl ($tmp,60);
318
319 &xor ($Zhi,"($Htbl,$nhi[0])");
320 &xor ($Zlo,$tmp);
321 &shl ($rem[0],48);
322
323 &bswap ($Zlo);
324 &xor ($Zhi,$rem[0]);
325
326 &bswap ($Zhi);
327 &cmp ($inp,$len);
328 &jb (".Louter_loop");
329}
330$code.=<<___;
331 mov $Zlo,8($Xi)
332 mov $Zhi,($Xi)
333
334 lea 280(%rsp),%rsi
335 mov 0(%rsi),%r15
336 mov 8(%rsi),%r14
337 mov 16(%rsi),%r13
338 mov 24(%rsi),%r12
339 mov 32(%rsi),%rbp
340 mov 40(%rsi),%rbx
341 lea 48(%rsi),%rsp
342.Lghash_epilogue:
343 ret
344.size gcm_ghash_4bit,.-gcm_ghash_4bit
345___
346
347######################################################################
348# PCLMULQDQ version.
349
350@_4args=$win64? ("%rcx","%rdx","%r8", "%r9") : # Win64 order
351 ("%rdi","%rsi","%rdx","%rcx"); # Unix order
352
353($Xi,$Xhi)=("%xmm0","%xmm1"); $Hkey="%xmm2";
354($T1,$T2,$T3)=("%xmm3","%xmm4","%xmm5");
355
356sub clmul64x64_T2 { # minimal register pressure
357my ($Xhi,$Xi,$Hkey,$modulo)=@_;
358
359$code.=<<___ if (!defined($modulo));
360 movdqa $Xi,$Xhi #
361 pshufd \$0b01001110,$Xi,$T1
362 pshufd \$0b01001110,$Hkey,$T2
363 pxor $Xi,$T1 #
364 pxor $Hkey,$T2
365___
366$code.=<<___;
367 pclmulqdq \$0x00,$Hkey,$Xi #######
368 pclmulqdq \$0x11,$Hkey,$Xhi #######
369 pclmulqdq \$0x00,$T2,$T1 #######
370 pxor $Xi,$T1 #
371 pxor $Xhi,$T1 #
372
373 movdqa $T1,$T2 #
374 psrldq \$8,$T1
375 pslldq \$8,$T2 #
376 pxor $T1,$Xhi
377 pxor $T2,$Xi #
378___
379}
380
381sub reduction_alg9 { # 17/13 times faster than Intel version
382my ($Xhi,$Xi) = @_;
383
384$code.=<<___;
385 # 1st phase
386 movdqa $Xi,$T1 #
387 psllq \$1,$Xi
388 pxor $T1,$Xi #
389 psllq \$5,$Xi #
390 pxor $T1,$Xi #
391 psllq \$57,$Xi #
392 movdqa $Xi,$T2 #
393 pslldq \$8,$Xi
394 psrldq \$8,$T2 #
395 pxor $T1,$Xi
396 pxor $T2,$Xhi #
397
398 # 2nd phase
399 movdqa $Xi,$T2
400 psrlq \$5,$Xi
401 pxor $T2,$Xi #
402 psrlq \$1,$Xi #
403 pxor $T2,$Xi #
404 pxor $Xhi,$T2
405 psrlq \$1,$Xi #
406 pxor $T2,$Xi #
407___
408}
409
410{ my ($Htbl,$Xip)=@_4args;
411
412$code.=<<___;
413.globl gcm_init_clmul
414.type gcm_init_clmul,\@abi-omnipotent
415.align 16
416gcm_init_clmul:
417 _CET_ENDBR
418 movdqu ($Xip),$Hkey
419 pshufd \$0b01001110,$Hkey,$Hkey # dword swap
420
421 # <<1 twist
422 pshufd \$0b11111111,$Hkey,$T2 # broadcast uppermost dword
423 movdqa $Hkey,$T1
424 psllq \$1,$Hkey
425 pxor $T3,$T3 #
426 psrlq \$63,$T1
427 pcmpgtd $T2,$T3 # broadcast carry bit
428 pslldq \$8,$T1
429 por $T1,$Hkey # H<<=1
430
431 # magic reduction
432 pand .L0x1c2_polynomial(%rip),$T3
433 pxor $T3,$Hkey # if(carry) H^=0x1c2_polynomial
434
435 # calculate H^2
436 movdqa $Hkey,$Xi
437___
438 &clmul64x64_T2 ($Xhi,$Xi,$Hkey);
439 &reduction_alg9 ($Xhi,$Xi);
440$code.=<<___;
441 movdqu $Hkey,($Htbl) # save H
442 movdqu $Xi,16($Htbl) # save H^2
443 ret
444.size gcm_init_clmul,.-gcm_init_clmul
445___
446}
447
448{ my ($Xip,$Htbl)=@_4args;
449
450$code.=<<___;
451.globl gcm_gmult_clmul
452.type gcm_gmult_clmul,\@abi-omnipotent
453.align 16
454gcm_gmult_clmul:
455 _CET_ENDBR
456 movdqu ($Xip),$Xi
457 movdqa .Lbswap_mask(%rip),$T3
458 movdqu ($Htbl),$Hkey
459 pshufb $T3,$Xi
460___
461 &clmul64x64_T2 ($Xhi,$Xi,$Hkey);
462 &reduction_alg9 ($Xhi,$Xi);
463$code.=<<___;
464 pshufb $T3,$Xi
465 movdqu $Xi,($Xip)
466 ret
467.size gcm_gmult_clmul,.-gcm_gmult_clmul
468___
469}
470
471{ my ($Xip,$Htbl,$inp,$len)=@_4args;
472 my $Xn="%xmm6";
473 my $Xhn="%xmm7";
474 my $Hkey2="%xmm8";
475 my $T1n="%xmm9";
476 my $T2n="%xmm10";
477
478$code.=<<___;
479.globl gcm_ghash_clmul
480.type gcm_ghash_clmul,\@abi-omnipotent
481.align 16
482gcm_ghash_clmul:
483 _CET_ENDBR
484___
485$code.=<<___ if ($win64);
486.LSEH_begin_gcm_ghash_clmul:
487 # I can't trust assembler to use specific encoding:-(
488 .byte 0x48,0x83,0xec,0x58 #sub \$0x58,%rsp
489 .byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp)
490 .byte 0x0f,0x29,0x7c,0x24,0x10 #movdqa %xmm7,0x10(%rsp)
491 .byte 0x44,0x0f,0x29,0x44,0x24,0x20 #movaps %xmm8,0x20(%rsp)
492 .byte 0x44,0x0f,0x29,0x4c,0x24,0x30 #movaps %xmm9,0x30(%rsp)
493 .byte 0x44,0x0f,0x29,0x54,0x24,0x40 #movaps %xmm10,0x40(%rsp)
494___
495$code.=<<___;
496 movdqa .Lbswap_mask(%rip),$T3
497
498 movdqu ($Xip),$Xi
499 movdqu ($Htbl),$Hkey
500 pshufb $T3,$Xi
501
502 sub \$0x10,$len
503 jz .Lodd_tail
504
505 movdqu 16($Htbl),$Hkey2
506 #######
507 # Xi+2 =[H*(Ii+1 + Xi+1)] mod P =
508 # [(H*Ii+1) + (H*Xi+1)] mod P =
509 # [(H*Ii+1) + H^2*(Ii+Xi)] mod P
510 #
511 movdqu ($inp),$T1 # Ii
512 movdqu 16($inp),$Xn # Ii+1
513 pshufb $T3,$T1
514 pshufb $T3,$Xn
515 pxor $T1,$Xi # Ii+Xi
516___
517 &clmul64x64_T2 ($Xhn,$Xn,$Hkey); # H*Ii+1
518$code.=<<___;
519 movdqa $Xi,$Xhi #
520 pshufd \$0b01001110,$Xi,$T1
521 pshufd \$0b01001110,$Hkey2,$T2
522 pxor $Xi,$T1 #
523 pxor $Hkey2,$T2
524
525 lea 32($inp),$inp # i+=2
526 sub \$0x20,$len
527 jbe .Leven_tail
528
529.Lmod_loop:
530___
531 &clmul64x64_T2 ($Xhi,$Xi,$Hkey2,1); # H^2*(Ii+Xi)
532$code.=<<___;
533 movdqu ($inp),$T1 # Ii
534 pxor $Xn,$Xi # (H*Ii+1) + H^2*(Ii+Xi)
535 pxor $Xhn,$Xhi
536
537 movdqu 16($inp),$Xn # Ii+1
538 pshufb $T3,$T1
539 pshufb $T3,$Xn
540
541 movdqa $Xn,$Xhn #
542 pshufd \$0b01001110,$Xn,$T1n
543 pshufd \$0b01001110,$Hkey,$T2n
544 pxor $Xn,$T1n #
545 pxor $Hkey,$T2n
546 pxor $T1,$Xhi # "Ii+Xi", consume early
547
548 movdqa $Xi,$T1 # 1st phase
549 psllq \$1,$Xi
550 pxor $T1,$Xi #
551 psllq \$5,$Xi #
552 pxor $T1,$Xi #
553 pclmulqdq \$0x00,$Hkey,$Xn #######
554 psllq \$57,$Xi #
555 movdqa $Xi,$T2 #
556 pslldq \$8,$Xi
557 psrldq \$8,$T2 #
558 pxor $T1,$Xi
559 pxor $T2,$Xhi #
560
561 pclmulqdq \$0x11,$Hkey,$Xhn #######
562 movdqa $Xi,$T2 # 2nd phase
563 psrlq \$5,$Xi
564 pxor $T2,$Xi #
565 psrlq \$1,$Xi #
566 pxor $T2,$Xi #
567 pxor $Xhi,$T2
568 psrlq \$1,$Xi #
569 pxor $T2,$Xi #
570
571 pclmulqdq \$0x00,$T2n,$T1n #######
572 movdqa $Xi,$Xhi #
573 pshufd \$0b01001110,$Xi,$T1
574 pshufd \$0b01001110,$Hkey2,$T2
575 pxor $Xi,$T1 #
576 pxor $Hkey2,$T2
577
578 pxor $Xn,$T1n #
579 pxor $Xhn,$T1n #
580 movdqa $T1n,$T2n #
581 psrldq \$8,$T1n
582 pslldq \$8,$T2n #
583 pxor $T1n,$Xhn
584 pxor $T2n,$Xn #
585
586 lea 32($inp),$inp
587 sub \$0x20,$len
588 ja .Lmod_loop
589
590.Leven_tail:
591___
592 &clmul64x64_T2 ($Xhi,$Xi,$Hkey2,1); # H^2*(Ii+Xi)
593$code.=<<___;
594 pxor $Xn,$Xi # (H*Ii+1) + H^2*(Ii+Xi)
595 pxor $Xhn,$Xhi
596___
597 &reduction_alg9 ($Xhi,$Xi);
598$code.=<<___;
599 test $len,$len
600 jnz .Ldone
601
602.Lodd_tail:
603 movdqu ($inp),$T1 # Ii
604 pshufb $T3,$T1
605 pxor $T1,$Xi # Ii+Xi
606___
607 &clmul64x64_T2 ($Xhi,$Xi,$Hkey); # H*(Ii+Xi)
608 &reduction_alg9 ($Xhi,$Xi);
609$code.=<<___;
610.Ldone:
611 pshufb $T3,$Xi
612 movdqu $Xi,($Xip)
613___
614$code.=<<___ if ($win64);
615 movaps (%rsp),%xmm6
616 movaps 0x10(%rsp),%xmm7
617 movaps 0x20(%rsp),%xmm8
618 movaps 0x30(%rsp),%xmm9
619 movaps 0x40(%rsp),%xmm10
620 add \$0x58,%rsp
621___
622$code.=<<___;
623 ret
624.LSEH_end_gcm_ghash_clmul:
625.size gcm_ghash_clmul,.-gcm_ghash_clmul
626___
627}
628
629$code.=<<___;
630.section .rodata
631.align 64
632.Lbswap_mask:
633 .byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
634.L0x1c2_polynomial:
635 .byte 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2
636.align 64
637.type .Lrem_4bit,\@object
638.Lrem_4bit:
639 .long 0,`0x0000<<16`,0,`0x1C20<<16`,0,`0x3840<<16`,0,`0x2460<<16`
640 .long 0,`0x7080<<16`,0,`0x6CA0<<16`,0,`0x48C0<<16`,0,`0x54E0<<16`
641 .long 0,`0xE100<<16`,0,`0xFD20<<16`,0,`0xD940<<16`,0,`0xC560<<16`
642 .long 0,`0x9180<<16`,0,`0x8DA0<<16`,0,`0xA9C0<<16`,0,`0xB5E0<<16`
643.type .Lrem_8bit,\@object
644.Lrem_8bit:
645 .value 0x0000,0x01C2,0x0384,0x0246,0x0708,0x06CA,0x048C,0x054E
646 .value 0x0E10,0x0FD2,0x0D94,0x0C56,0x0918,0x08DA,0x0A9C,0x0B5E
647 .value 0x1C20,0x1DE2,0x1FA4,0x1E66,0x1B28,0x1AEA,0x18AC,0x196E
648 .value 0x1230,0x13F2,0x11B4,0x1076,0x1538,0x14FA,0x16BC,0x177E
649 .value 0x3840,0x3982,0x3BC4,0x3A06,0x3F48,0x3E8A,0x3CCC,0x3D0E
650 .value 0x3650,0x3792,0x35D4,0x3416,0x3158,0x309A,0x32DC,0x331E
651 .value 0x2460,0x25A2,0x27E4,0x2626,0x2368,0x22AA,0x20EC,0x212E
652 .value 0x2A70,0x2BB2,0x29F4,0x2836,0x2D78,0x2CBA,0x2EFC,0x2F3E
653 .value 0x7080,0x7142,0x7304,0x72C6,0x7788,0x764A,0x740C,0x75CE
654 .value 0x7E90,0x7F52,0x7D14,0x7CD6,0x7998,0x785A,0x7A1C,0x7BDE
655 .value 0x6CA0,0x6D62,0x6F24,0x6EE6,0x6BA8,0x6A6A,0x682C,0x69EE
656 .value 0x62B0,0x6372,0x6134,0x60F6,0x65B8,0x647A,0x663C,0x67FE
657 .value 0x48C0,0x4902,0x4B44,0x4A86,0x4FC8,0x4E0A,0x4C4C,0x4D8E
658 .value 0x46D0,0x4712,0x4554,0x4496,0x41D8,0x401A,0x425C,0x439E
659 .value 0x54E0,0x5522,0x5764,0x56A6,0x53E8,0x522A,0x506C,0x51AE
660 .value 0x5AF0,0x5B32,0x5974,0x58B6,0x5DF8,0x5C3A,0x5E7C,0x5FBE
661 .value 0xE100,0xE0C2,0xE284,0xE346,0xE608,0xE7CA,0xE58C,0xE44E
662 .value 0xEF10,0xEED2,0xEC94,0xED56,0xE818,0xE9DA,0xEB9C,0xEA5E
663 .value 0xFD20,0xFCE2,0xFEA4,0xFF66,0xFA28,0xFBEA,0xF9AC,0xF86E
664 .value 0xF330,0xF2F2,0xF0B4,0xF176,0xF438,0xF5FA,0xF7BC,0xF67E
665 .value 0xD940,0xD882,0xDAC4,0xDB06,0xDE48,0xDF8A,0xDDCC,0xDC0E
666 .value 0xD750,0xD692,0xD4D4,0xD516,0xD058,0xD19A,0xD3DC,0xD21E
667 .value 0xC560,0xC4A2,0xC6E4,0xC726,0xC268,0xC3AA,0xC1EC,0xC02E
668 .value 0xCB70,0xCAB2,0xC8F4,0xC936,0xCC78,0xCDBA,0xCFFC,0xCE3E
669 .value 0x9180,0x9042,0x9204,0x93C6,0x9688,0x974A,0x950C,0x94CE
670 .value 0x9F90,0x9E52,0x9C14,0x9DD6,0x9898,0x995A,0x9B1C,0x9ADE
671 .value 0x8DA0,0x8C62,0x8E24,0x8FE6,0x8AA8,0x8B6A,0x892C,0x88EE
672 .value 0x83B0,0x8272,0x8034,0x81F6,0x84B8,0x857A,0x873C,0x86FE
673 .value 0xA9C0,0xA802,0xAA44,0xAB86,0xAEC8,0xAF0A,0xAD4C,0xAC8E
674 .value 0xA7D0,0xA612,0xA454,0xA596,0xA0D8,0xA11A,0xA35C,0xA29E
675 .value 0xB5E0,0xB422,0xB664,0xB7A6,0xB2E8,0xB32A,0xB16C,0xB0AE
676 .value 0xBBF0,0xBA32,0xB874,0xB9B6,0xBCF8,0xBD3A,0xBF7C,0xBEBE
677.align 64
678.text
679___
680
681# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
682# CONTEXT *context,DISPATCHER_CONTEXT *disp)
683if ($win64) {
684$rec="%rcx";
685$frame="%rdx";
686$context="%r8";
687$disp="%r9";
688
689$code.=<<___;
690.extern __imp_RtlVirtualUnwind
691.type se_handler,\@abi-omnipotent
692.align 16
693se_handler:
694 _CET_ENDBR
695 push %rsi
696 push %rdi
697 push %rbx
698 push %rbp
699 push %r12
700 push %r13
701 push %r14
702 push %r15
703 pushfq
704 sub \$64,%rsp
705
706 mov 120($context),%rax # pull context->Rax
707 mov 248($context),%rbx # pull context->Rip
708
709 mov 8($disp),%rsi # disp->ImageBase
710 mov 56($disp),%r11 # disp->HandlerData
711
712 mov 0(%r11),%r10d # HandlerData[0]
713 lea (%rsi,%r10),%r10 # prologue label
714 cmp %r10,%rbx # context->Rip<prologue label
715 jb .Lin_prologue
716
717 mov 152($context),%rax # pull context->Rsp
718
719 mov 4(%r11),%r10d # HandlerData[1]
720 lea (%rsi,%r10),%r10 # epilogue label
721 cmp %r10,%rbx # context->Rip>=epilogue label
722 jae .Lin_prologue
723
724 lea 24(%rax),%rax # adjust "rsp"
725
726 mov -8(%rax),%rbx
727 mov -16(%rax),%rbp
728 mov -24(%rax),%r12
729 mov %rbx,144($context) # restore context->Rbx
730 mov %rbp,160($context) # restore context->Rbp
731 mov %r12,216($context) # restore context->R12
732
733.Lin_prologue:
734 mov 8(%rax),%rdi
735 mov 16(%rax),%rsi
736 mov %rax,152($context) # restore context->Rsp
737 mov %rsi,168($context) # restore context->Rsi
738 mov %rdi,176($context) # restore context->Rdi
739
740 mov 40($disp),%rdi # disp->ContextRecord
741 mov $context,%rsi # context
742 mov \$`1232/8`,%ecx # sizeof(CONTEXT)
743 .long 0xa548f3fc # cld; rep movsq
744
745 mov $disp,%rsi
746 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
747 mov 8(%rsi),%rdx # arg2, disp->ImageBase
748 mov 0(%rsi),%r8 # arg3, disp->ControlPc
749 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
750 mov 40(%rsi),%r10 # disp->ContextRecord
751 lea 56(%rsi),%r11 # &disp->HandlerData
752 lea 24(%rsi),%r12 # &disp->EstablisherFrame
753 mov %r10,32(%rsp) # arg5
754 mov %r11,40(%rsp) # arg6
755 mov %r12,48(%rsp) # arg7
756 mov %rcx,56(%rsp) # arg8, (NULL)
757 call *__imp_RtlVirtualUnwind(%rip)
758
759 mov \$1,%eax # ExceptionContinueSearch
760 add \$64,%rsp
761 popfq
762 pop %r15
763 pop %r14
764 pop %r13
765 pop %r12
766 pop %rbp
767 pop %rbx
768 pop %rdi
769 pop %rsi
770 ret
771.size se_handler,.-se_handler
772
773.section .pdata
774.align 4
775 .rva .LSEH_begin_gcm_gmult_4bit
776 .rva .LSEH_end_gcm_gmult_4bit
777 .rva .LSEH_info_gcm_gmult_4bit
778
779 .rva .LSEH_begin_gcm_ghash_4bit
780 .rva .LSEH_end_gcm_ghash_4bit
781 .rva .LSEH_info_gcm_ghash_4bit
782
783 .rva .LSEH_begin_gcm_ghash_clmul
784 .rva .LSEH_end_gcm_ghash_clmul
785 .rva .LSEH_info_gcm_ghash_clmul
786
787.section .xdata
788.align 8
789.LSEH_info_gcm_gmult_4bit:
790 .byte 9,0,0,0
791 .rva se_handler
792 .rva .Lgmult_prologue,.Lgmult_epilogue # HandlerData
793.LSEH_info_gcm_ghash_4bit:
794 .byte 9,0,0,0
795 .rva se_handler
796 .rva .Lghash_prologue,.Lghash_epilogue # HandlerData
797.LSEH_info_gcm_ghash_clmul:
798 .byte 0x01,0x1f,0x0b,0x00
799 .byte 0x1f,0xa8,0x04,0x00 #movaps 0x40(rsp),xmm10
800 .byte 0x19,0x98,0x03,0x00 #movaps 0x30(rsp),xmm9
801 .byte 0x13,0x88,0x02,0x00 #movaps 0x20(rsp),xmm8
802 .byte 0x0d,0x78,0x01,0x00 #movaps 0x10(rsp),xmm7
803 .byte 0x08,0x68,0x00,0x00 #movaps (rsp),xmm6
804 .byte 0x04,0xa2,0x00,0x00 #sub rsp,0x58
805___
806}
807
808$code =~ s/\`([^\`]*)\`/eval($1)/gem;
809
810print $code;
811
812close STDOUT;
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-24 23:29:36 +0000