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OpenSSL: update to 1.0.2a
[tomato.git] / release / src / router / openssl / crypto / bn / asm / x86_64-mont.pl
blob2989b58f256eaa0fe4315d9970c91161f874481a
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 # October 2005.
11 #
12 # Montgomery multiplication routine for x86_64. While it gives modest
13 # 9% improvement of rsa4096 sign on Opteron, rsa512 sign runs more
14 # than twice, >2x, as fast. Most common rsa1024 sign is improved by
15 # respectful 50%. It remains to be seen if loop unrolling and
16 # dedicated squaring routine can provide further improvement...
17
18 # July 2011.
19 #
20 # Add dedicated squaring procedure. Performance improvement varies
21 # from platform to platform, but in average it's ~5%/15%/25%/33%
22 # for 512-/1024-/2048-/4096-bit RSA *sign* benchmarks respectively.
23
24 # August 2011.
25 #
26 # Unroll and modulo-schedule inner loops in such manner that they
27 # are "fallen through" for input lengths of 8, which is critical for
28 # 1024-bit RSA *sign*. Average performance improvement in comparison
29 # to *initial* version of this module from 2005 is ~0%/30%/40%/45%
30 # for 512-/1024-/2048-/4096-bit RSA *sign* benchmarks respectively.
31
32 # June 2013.
33 #
34 # Optimize reduction in squaring procedure and improve 1024+-bit RSA
35 # sign performance by 10-16% on Intel Sandy Bridge and later
36 # (virtually same on non-Intel processors).
37
38 # August 2013.
39 #
40 # Add MULX/ADOX/ADCX code path.
41
42 $flavour = shift;
43 $output = shift;
44 if ($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 $xlate) or
51 die "can't locate x86_64-xlate.pl";
52
53 open OUT,"| \"$^X\" $xlate $flavour $output";
54 *STDOUT=*OUT;
55
56 if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
57 =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
58 $addx = ($1>=2.23);
59 }
60
61 if (!$addx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
62 `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) {
63 $addx = ($1>=2.10);
64 }
65
66 if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
67 `ml64 2>&1` =~ /Version ([0-9]+)\./) {
68 $addx = ($1>=12);
69 }
70
71 # int bn_mul_mont(
72 $rp="%rdi"; # BN_ULONG *rp,
73 $ap="%rsi"; # const BN_ULONG *ap,
74 $bp="%rdx"; # const BN_ULONG *bp,
75 $np="%rcx"; # const BN_ULONG *np,
76 $n0="%r8"; # const BN_ULONG *n0,
77 $num="%r9"; # int num);
78 $lo0="%r10";
79 $hi0="%r11";
80 $hi1="%r13";
81 $i="%r14";
82 $j="%r15";
83 $m0="%rbx";
84 $m1="%rbp";
85
86 $code=<<___;
87 .text
88
89 .extern OPENSSL_ia32cap_P
90
91 .globl bn_mul_mont
92 .type bn_mul_mont,\@function,6
93 .align 16
94 bn_mul_mont:
95 test \$3,${num}d
96 jnz .Lmul_enter
97 cmp \$8,${num}d
98 jb .Lmul_enter
99 ___
100 $code.=<<___ if ($addx);
101 mov OPENSSL_ia32cap_P+8(%rip),%r11d
102 ___
103 $code.=<<___;
104 cmp $ap,$bp
105 jne .Lmul4x_enter
106 test \$7,${num}d
107 jz .Lsqr8x_enter
108 jmp .Lmul4x_enter
109
110 .align 16
111 .Lmul_enter:
112 push %rbx
113 push %rbp
114 push %r12
115 push %r13
116 push %r14
117 push %r15
118
119 mov ${num}d,${num}d
120 lea 2($num),%r10
121 mov %rsp,%r11
122 neg %r10
123 lea (%rsp,%r10,8),%rsp # tp=alloca(8*(num+2))
124 and \$-1024,%rsp # minimize TLB usage
125
126 mov %r11,8(%rsp,$num,8) # tp[num+1]=%rsp
127 .Lmul_body:
128 mov $bp,%r12 # reassign $bp
129 ___
130 $bp="%r12";
131 $code.=<<___;
132 mov ($n0),$n0 # pull n0[0] value
133 mov ($bp),$m0 # m0=bp[0]
134 mov ($ap),%rax
135
136 xor $i,$i # i=0
137 xor $j,$j # j=0
138
139 mov $n0,$m1
140 mulq $m0 # ap[0]*bp[0]
141 mov %rax,$lo0
142 mov ($np),%rax
143
144 imulq $lo0,$m1 # "tp[0]"*n0
145 mov %rdx,$hi0
146
147 mulq $m1 # np[0]*m1
148 add %rax,$lo0 # discarded
149 mov 8($ap),%rax
150 adc \$0,%rdx
151 mov %rdx,$hi1
152
153 lea 1($j),$j # j++
154 jmp .L1st_enter
155
156 .align 16
157 .L1st:
158 add %rax,$hi1
159 mov ($ap,$j,8),%rax
160 adc \$0,%rdx
161 add $hi0,$hi1 # np[j]*m1+ap[j]*bp[0]
162 mov $lo0,$hi0
163 adc \$0,%rdx
164 mov $hi1,-16(%rsp,$j,8) # tp[j-1]
165 mov %rdx,$hi1
166
167 .L1st_enter:
168 mulq $m0 # ap[j]*bp[0]
169 add %rax,$hi0
170 mov ($np,$j,8),%rax
171 adc \$0,%rdx
172 lea 1($j),$j # j++
173 mov %rdx,$lo0
174
175 mulq $m1 # np[j]*m1
176 cmp $num,$j
177 jne .L1st
178
179 add %rax,$hi1
180 mov ($ap),%rax # ap[0]
181 adc \$0,%rdx
182 add $hi0,$hi1 # np[j]*m1+ap[j]*bp[0]
183 adc \$0,%rdx
184 mov $hi1,-16(%rsp,$j,8) # tp[j-1]
185 mov %rdx,$hi1
186 mov $lo0,$hi0
187
188 xor %rdx,%rdx
189 add $hi0,$hi1
190 adc \$0,%rdx
191 mov $hi1,-8(%rsp,$num,8)
192 mov %rdx,(%rsp,$num,8) # store upmost overflow bit
193
194 lea 1($i),$i # i++
195 jmp .Louter
196 .align 16
197 .Louter:
198 mov ($bp,$i,8),$m0 # m0=bp[i]
199 xor $j,$j # j=0
200 mov $n0,$m1
201 mov (%rsp),$lo0
202 mulq $m0 # ap[0]*bp[i]
203 add %rax,$lo0 # ap[0]*bp[i]+tp[0]
204 mov ($np),%rax
205 adc \$0,%rdx
206
207 imulq $lo0,$m1 # tp[0]*n0
208 mov %rdx,$hi0
209
210 mulq $m1 # np[0]*m1
211 add %rax,$lo0 # discarded
212 mov 8($ap),%rax
213 adc \$0,%rdx
214 mov 8(%rsp),$lo0 # tp[1]
215 mov %rdx,$hi1
216
217 lea 1($j),$j # j++
218 jmp .Linner_enter
219
220 .align 16
221 .Linner:
222 add %rax,$hi1
223 mov ($ap,$j,8),%rax
224 adc \$0,%rdx
225 add $lo0,$hi1 # np[j]*m1+ap[j]*bp[i]+tp[j]
226 mov (%rsp,$j,8),$lo0
227 adc \$0,%rdx
228 mov $hi1,-16(%rsp,$j,8) # tp[j-1]
229 mov %rdx,$hi1
230
231 .Linner_enter:
232 mulq $m0 # ap[j]*bp[i]
233 add %rax,$hi0
234 mov ($np,$j,8),%rax
235 adc \$0,%rdx
236 add $hi0,$lo0 # ap[j]*bp[i]+tp[j]
237 mov %rdx,$hi0
238 adc \$0,$hi0
239 lea 1($j),$j # j++
240
241 mulq $m1 # np[j]*m1
242 cmp $num,$j
243 jne .Linner
244
245 add %rax,$hi1
246 mov ($ap),%rax # ap[0]
247 adc \$0,%rdx
248 add $lo0,$hi1 # np[j]*m1+ap[j]*bp[i]+tp[j]
249 mov (%rsp,$j,8),$lo0
250 adc \$0,%rdx
251 mov $hi1,-16(%rsp,$j,8) # tp[j-1]
252 mov %rdx,$hi1
253
254 xor %rdx,%rdx
255 add $hi0,$hi1
256 adc \$0,%rdx
257 add $lo0,$hi1 # pull upmost overflow bit
258 adc \$0,%rdx
259 mov $hi1,-8(%rsp,$num,8)
260 mov %rdx,(%rsp,$num,8) # store upmost overflow bit
261
262 lea 1($i),$i # i++
263 cmp $num,$i
264 jb .Louter
265
266 xor $i,$i # i=0 and clear CF!
267 mov (%rsp),%rax # tp[0]
268 lea (%rsp),$ap # borrow ap for tp
269 mov $num,$j # j=num
270 jmp .Lsub
271 .align 16
272 .Lsub: sbb ($np,$i,8),%rax
273 mov %rax,($rp,$i,8) # rp[i]=tp[i]-np[i]
274 mov 8($ap,$i,8),%rax # tp[i+1]
275 lea 1($i),$i # i++
276 dec $j # doesnn't affect CF!
277 jnz .Lsub
278
279 sbb \$0,%rax # handle upmost overflow bit
280 xor $i,$i
281 and %rax,$ap
282 not %rax
283 mov $rp,$np
284 and %rax,$np
285 mov $num,$j # j=num
286 or $np,$ap # ap=borrow?tp:rp
287 .align 16
288 .Lcopy: # copy or in-place refresh
289 mov ($ap,$i,8),%rax
290 mov $i,(%rsp,$i,8) # zap temporary vector
291 mov %rax,($rp,$i,8) # rp[i]=tp[i]
292 lea 1($i),$i
293 sub \$1,$j
294 jnz .Lcopy
295
296 mov 8(%rsp,$num,8),%rsi # restore %rsp
297 mov \$1,%rax
298 mov (%rsi),%r15
299 mov 8(%rsi),%r14
300 mov 16(%rsi),%r13
301 mov 24(%rsi),%r12
302 mov 32(%rsi),%rbp
303 mov 40(%rsi),%rbx
304 lea 48(%rsi),%rsp
305 .Lmul_epilogue:
306 ret
307 .size bn_mul_mont,.-bn_mul_mont
308 ___
309 {{{
310 my @A=("%r10","%r11");
311 my @N=("%r13","%rdi");
312 $code.=<<___;
313 .type bn_mul4x_mont,\@function,6
314 .align 16
315 bn_mul4x_mont:
316 .Lmul4x_enter:
317 ___
318 $code.=<<___ if ($addx);
319 and \$0x80100,%r11d
320 cmp \$0x80100,%r11d
321 je .Lmulx4x_enter
322 ___
323 $code.=<<___;
324 push %rbx
325 push %rbp
326 push %r12
327 push %r13
328 push %r14
329 push %r15
330
331 mov ${num}d,${num}d
332 lea 4($num),%r10
333 mov %rsp,%r11
334 neg %r10
335 lea (%rsp,%r10,8),%rsp # tp=alloca(8*(num+4))
336 and \$-1024,%rsp # minimize TLB usage
337
338 mov %r11,8(%rsp,$num,8) # tp[num+1]=%rsp
339 .Lmul4x_body:
340 mov $rp,16(%rsp,$num,8) # tp[num+2]=$rp
341 mov %rdx,%r12 # reassign $bp
342 ___
343 $bp="%r12";
344 $code.=<<___;
345 mov ($n0),$n0 # pull n0[0] value
346 mov ($bp),$m0 # m0=bp[0]
347 mov ($ap),%rax
348
349 xor $i,$i # i=0
350 xor $j,$j # j=0
351
352 mov $n0,$m1
353 mulq $m0 # ap[0]*bp[0]
354 mov %rax,$A[0]
355 mov ($np),%rax
356
357 imulq $A[0],$m1 # "tp[0]"*n0
358 mov %rdx,$A[1]
359
360 mulq $m1 # np[0]*m1
361 add %rax,$A[0] # discarded
362 mov 8($ap),%rax
363 adc \$0,%rdx
364 mov %rdx,$N[1]
365
366 mulq $m0
367 add %rax,$A[1]
368 mov 8($np),%rax
369 adc \$0,%rdx
370 mov %rdx,$A[0]
371
372 mulq $m1
373 add %rax,$N[1]
374 mov 16($ap),%rax
375 adc \$0,%rdx
376 add $A[1],$N[1]
377 lea 4($j),$j # j++
378 adc \$0,%rdx
379 mov $N[1],(%rsp)
380 mov %rdx,$N[0]
381 jmp .L1st4x
382 .align 16
383 .L1st4x:
384 mulq $m0 # ap[j]*bp[0]
385 add %rax,$A[0]
386 mov -16($np,$j,8),%rax
387 adc \$0,%rdx
388 mov %rdx,$A[1]
389
390 mulq $m1 # np[j]*m1
391 add %rax,$N[0]
392 mov -8($ap,$j,8),%rax
393 adc \$0,%rdx
394 add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0]
395 adc \$0,%rdx
396 mov $N[0],-24(%rsp,$j,8) # tp[j-1]
397 mov %rdx,$N[1]
398
399 mulq $m0 # ap[j]*bp[0]
400 add %rax,$A[1]
401 mov -8($np,$j,8),%rax
402 adc \$0,%rdx
403 mov %rdx,$A[0]
404
405 mulq $m1 # np[j]*m1
406 add %rax,$N[1]
407 mov ($ap,$j,8),%rax
408 adc \$0,%rdx
409 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0]
410 adc \$0,%rdx
411 mov $N[1],-16(%rsp,$j,8) # tp[j-1]
412 mov %rdx,$N[0]
413
414 mulq $m0 # ap[j]*bp[0]
415 add %rax,$A[0]
416 mov ($np,$j,8),%rax
417 adc \$0,%rdx
418 mov %rdx,$A[1]
419
420 mulq $m1 # np[j]*m1
421 add %rax,$N[0]
422 mov 8($ap,$j,8),%rax
423 adc \$0,%rdx
424 add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0]
425 adc \$0,%rdx
426 mov $N[0],-8(%rsp,$j,8) # tp[j-1]
427 mov %rdx,$N[1]
428
429 mulq $m0 # ap[j]*bp[0]
430 add %rax,$A[1]
431 mov 8($np,$j,8),%rax
432 adc \$0,%rdx
433 lea 4($j),$j # j++
434 mov %rdx,$A[0]
435
436 mulq $m1 # np[j]*m1
437 add %rax,$N[1]
438 mov -16($ap,$j,8),%rax
439 adc \$0,%rdx
440 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0]
441 adc \$0,%rdx
442 mov $N[1],-32(%rsp,$j,8) # tp[j-1]
443 mov %rdx,$N[0]
444 cmp $num,$j
445 jb .L1st4x
446
447 mulq $m0 # ap[j]*bp[0]
448 add %rax,$A[0]
449 mov -16($np,$j,8),%rax
450 adc \$0,%rdx
451 mov %rdx,$A[1]
452
453 mulq $m1 # np[j]*m1
454 add %rax,$N[0]
455 mov -8($ap,$j,8),%rax
456 adc \$0,%rdx
457 add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0]
458 adc \$0,%rdx
459 mov $N[0],-24(%rsp,$j,8) # tp[j-1]
460 mov %rdx,$N[1]
461
462 mulq $m0 # ap[j]*bp[0]
463 add %rax,$A[1]
464 mov -8($np,$j,8),%rax
465 adc \$0,%rdx
466 mov %rdx,$A[0]
467
468 mulq $m1 # np[j]*m1
469 add %rax,$N[1]
470 mov ($ap),%rax # ap[0]
471 adc \$0,%rdx
472 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0]
473 adc \$0,%rdx
474 mov $N[1],-16(%rsp,$j,8) # tp[j-1]
475 mov %rdx,$N[0]
476
477 xor $N[1],$N[1]
478 add $A[0],$N[0]
479 adc \$0,$N[1]
480 mov $N[0],-8(%rsp,$j,8)
481 mov $N[1],(%rsp,$j,8) # store upmost overflow bit
482
483 lea 1($i),$i # i++
484 .align 4
485 .Louter4x:
486 mov ($bp,$i,8),$m0 # m0=bp[i]
487 xor $j,$j # j=0
488 mov (%rsp),$A[0]
489 mov $n0,$m1
490 mulq $m0 # ap[0]*bp[i]
491 add %rax,$A[0] # ap[0]*bp[i]+tp[0]
492 mov ($np),%rax
493 adc \$0,%rdx
494
495 imulq $A[0],$m1 # tp[0]*n0
496 mov %rdx,$A[1]
497
498 mulq $m1 # np[0]*m1
499 add %rax,$A[0] # "$N[0]", discarded
500 mov 8($ap),%rax
501 adc \$0,%rdx
502 mov %rdx,$N[1]
503
504 mulq $m0 # ap[j]*bp[i]
505 add %rax,$A[1]
506 mov 8($np),%rax
507 adc \$0,%rdx
508 add 8(%rsp),$A[1] # +tp[1]
509 adc \$0,%rdx
510 mov %rdx,$A[0]
511
512 mulq $m1 # np[j]*m1
513 add %rax,$N[1]
514 mov 16($ap),%rax
515 adc \$0,%rdx
516 add $A[1],$N[1] # np[j]*m1+ap[j]*bp[i]+tp[j]
517 lea 4($j),$j # j+=2
518 adc \$0,%rdx
519 mov $N[1],(%rsp) # tp[j-1]
520 mov %rdx,$N[0]
521 jmp .Linner4x
522 .align 16
523 .Linner4x:
524 mulq $m0 # ap[j]*bp[i]
525 add %rax,$A[0]
526 mov -16($np,$j,8),%rax
527 adc \$0,%rdx
528 add -16(%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j]
529 adc \$0,%rdx
530 mov %rdx,$A[1]
531
532 mulq $m1 # np[j]*m1
533 add %rax,$N[0]
534 mov -8($ap,$j,8),%rax
535 adc \$0,%rdx
536 add $A[0],$N[0]
537 adc \$0,%rdx
538 mov $N[0],-24(%rsp,$j,8) # tp[j-1]
539 mov %rdx,$N[1]
540
541 mulq $m0 # ap[j]*bp[i]
542 add %rax,$A[1]
543 mov -8($np,$j,8),%rax
544 adc \$0,%rdx
545 add -8(%rsp,$j,8),$A[1]
546 adc \$0,%rdx
547 mov %rdx,$A[0]
548
549 mulq $m1 # np[j]*m1
550 add %rax,$N[1]
551 mov ($ap,$j,8),%rax
552 adc \$0,%rdx
553 add $A[1],$N[1]
554 adc \$0,%rdx
555 mov $N[1],-16(%rsp,$j,8) # tp[j-1]
556 mov %rdx,$N[0]
557
558 mulq $m0 # ap[j]*bp[i]
559 add %rax,$A[0]
560 mov ($np,$j,8),%rax
561 adc \$0,%rdx
562 add (%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j]
563 adc \$0,%rdx
564 mov %rdx,$A[1]
565
566 mulq $m1 # np[j]*m1
567 add %rax,$N[0]
568 mov 8($ap,$j,8),%rax
569 adc \$0,%rdx
570 add $A[0],$N[0]
571 adc \$0,%rdx
572 mov $N[0],-8(%rsp,$j,8) # tp[j-1]
573 mov %rdx,$N[1]
574
575 mulq $m0 # ap[j]*bp[i]
576 add %rax,$A[1]
577 mov 8($np,$j,8),%rax
578 adc \$0,%rdx
579 add 8(%rsp,$j,8),$A[1]
580 adc \$0,%rdx
581 lea 4($j),$j # j++
582 mov %rdx,$A[0]
583
584 mulq $m1 # np[j]*m1
585 add %rax,$N[1]
586 mov -16($ap,$j,8),%rax
587 adc \$0,%rdx
588 add $A[1],$N[1]
589 adc \$0,%rdx
590 mov $N[1],-32(%rsp,$j,8) # tp[j-1]
591 mov %rdx,$N[0]
592 cmp $num,$j
593 jb .Linner4x
594
595 mulq $m0 # ap[j]*bp[i]
596 add %rax,$A[0]
597 mov -16($np,$j,8),%rax
598 adc \$0,%rdx
599 add -16(%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j]
600 adc \$0,%rdx
601 mov %rdx,$A[1]
602
603 mulq $m1 # np[j]*m1
604 add %rax,$N[0]
605 mov -8($ap,$j,8),%rax
606 adc \$0,%rdx
607 add $A[0],$N[0]
608 adc \$0,%rdx
609 mov $N[0],-24(%rsp,$j,8) # tp[j-1]
610 mov %rdx,$N[1]
611
612 mulq $m0 # ap[j]*bp[i]
613 add %rax,$A[1]
614 mov -8($np,$j,8),%rax
615 adc \$0,%rdx
616 add -8(%rsp,$j,8),$A[1]
617 adc \$0,%rdx
618 lea 1($i),$i # i++
619 mov %rdx,$A[0]
620
621 mulq $m1 # np[j]*m1
622 add %rax,$N[1]
623 mov ($ap),%rax # ap[0]
624 adc \$0,%rdx
625 add $A[1],$N[1]
626 adc \$0,%rdx
627 mov $N[1],-16(%rsp,$j,8) # tp[j-1]
628 mov %rdx,$N[0]
629
630 xor $N[1],$N[1]
631 add $A[0],$N[0]
632 adc \$0,$N[1]
633 add (%rsp,$num,8),$N[0] # pull upmost overflow bit
634 adc \$0,$N[1]
635 mov $N[0],-8(%rsp,$j,8)
636 mov $N[1],(%rsp,$j,8) # store upmost overflow bit
637
638 cmp $num,$i
639 jb .Louter4x
640 ___
641 {
642 my @ri=("%rax","%rdx",$m0,$m1);
643 $code.=<<___;
644 mov 16(%rsp,$num,8),$rp # restore $rp
645 mov 0(%rsp),@ri[0] # tp[0]
646 pxor %xmm0,%xmm0
647 mov 8(%rsp),@ri[1] # tp[1]
648 shr \$2,$num # num/=4
649 lea (%rsp),$ap # borrow ap for tp
650 xor $i,$i # i=0 and clear CF!
651
652 sub 0($np),@ri[0]
653 mov 16($ap),@ri[2] # tp[2]
654 mov 24($ap),@ri[3] # tp[3]
655 sbb 8($np),@ri[1]
656 lea -1($num),$j # j=num/4-1
657 jmp .Lsub4x
658 .align 16
659 .Lsub4x:
660 mov @ri[0],0($rp,$i,8) # rp[i]=tp[i]-np[i]
661 mov @ri[1],8($rp,$i,8) # rp[i]=tp[i]-np[i]
662 sbb 16($np,$i,8),@ri[2]
663 mov 32($ap,$i,8),@ri[0] # tp[i+1]
664 mov 40($ap,$i,8),@ri[1]
665 sbb 24($np,$i,8),@ri[3]
666 mov @ri[2],16($rp,$i,8) # rp[i]=tp[i]-np[i]
667 mov @ri[3],24($rp,$i,8) # rp[i]=tp[i]-np[i]
668 sbb 32($np,$i,8),@ri[0]
669 mov 48($ap,$i,8),@ri[2]
670 mov 56($ap,$i,8),@ri[3]
671 sbb 40($np,$i,8),@ri[1]
672 lea 4($i),$i # i++
673 dec $j # doesnn't affect CF!
674 jnz .Lsub4x
675
676 mov @ri[0],0($rp,$i,8) # rp[i]=tp[i]-np[i]
677 mov 32($ap,$i,8),@ri[0] # load overflow bit
678 sbb 16($np,$i,8),@ri[2]
679 mov @ri[1],8($rp,$i,8) # rp[i]=tp[i]-np[i]
680 sbb 24($np,$i,8),@ri[3]
681 mov @ri[2],16($rp,$i,8) # rp[i]=tp[i]-np[i]
682
683 sbb \$0,@ri[0] # handle upmost overflow bit
684 mov @ri[3],24($rp,$i,8) # rp[i]=tp[i]-np[i]
685 xor $i,$i # i=0
686 and @ri[0],$ap
687 not @ri[0]
688 mov $rp,$np
689 and @ri[0],$np
690 lea -1($num),$j
691 or $np,$ap # ap=borrow?tp:rp
692
693 movdqu ($ap),%xmm1
694 movdqa %xmm0,(%rsp)
695 movdqu %xmm1,($rp)
696 jmp .Lcopy4x
697 .align 16
698 .Lcopy4x: # copy or in-place refresh
699 movdqu 16($ap,$i),%xmm2
700 movdqu 32($ap,$i),%xmm1
701 movdqa %xmm0,16(%rsp,$i)
702 movdqu %xmm2,16($rp,$i)
703 movdqa %xmm0,32(%rsp,$i)
704 movdqu %xmm1,32($rp,$i)
705 lea 32($i),$i
706 dec $j
707 jnz .Lcopy4x
708
709 shl \$2,$num
710 movdqu 16($ap,$i),%xmm2
711 movdqa %xmm0,16(%rsp,$i)
712 movdqu %xmm2,16($rp,$i)
713 ___
714 }
715 $code.=<<___;
716 mov 8(%rsp,$num,8),%rsi # restore %rsp
717 mov \$1,%rax
718 mov (%rsi),%r15
719 mov 8(%rsi),%r14
720 mov 16(%rsi),%r13
721 mov 24(%rsi),%r12
722 mov 32(%rsi),%rbp
723 mov 40(%rsi),%rbx
724 lea 48(%rsi),%rsp
725 .Lmul4x_epilogue:
726 ret
727 .size bn_mul4x_mont,.-bn_mul4x_mont
728 ___
729 }}}
730 \f{{{
731 ######################################################################
732 # void bn_sqr8x_mont(
733 my $rptr="%rdi"; # const BN_ULONG *rptr,
734 my $aptr="%rsi"; # const BN_ULONG *aptr,
735 my $bptr="%rdx"; # not used
736 my $nptr="%rcx"; # const BN_ULONG *nptr,
737 my $n0 ="%r8"; # const BN_ULONG *n0);
738 my $num ="%r9"; # int num, has to be divisible by 8
739
740 my ($i,$j,$tptr)=("%rbp","%rcx",$rptr);
741 my @A0=("%r10","%r11");
742 my @A1=("%r12","%r13");
743 my ($a0,$a1,$ai)=("%r14","%r15","%rbx");
744
745 $code.=<<___ if ($addx);
746 .extern bn_sqrx8x_internal # see x86_64-mont5 module
747 ___
748 $code.=<<___;
749 .extern bn_sqr8x_internal # see x86_64-mont5 module
750
751 .type bn_sqr8x_mont,\@function,6
752 .align 32
753 bn_sqr8x_mont:
754 .Lsqr8x_enter:
755 mov %rsp,%rax
756 push %rbx
757 push %rbp
758 push %r12
759 push %r13
760 push %r14
761 push %r15
762
763 mov ${num}d,%r10d
764 shl \$3,${num}d # convert $num to bytes
765 shl \$3+2,%r10 # 4*$num
766 neg $num
767
768 ##############################################################
769 # ensure that stack frame doesn't alias with $aptr modulo
770 # 4096. this is done to allow memory disambiguation logic
771 # do its job.
772 #
773 lea -64(%rsp,$num,4),%r11
774 mov ($n0),$n0 # *n0
775 sub $aptr,%r11
776 and \$4095,%r11
777 cmp %r11,%r10
778 jb .Lsqr8x_sp_alt
779 sub %r11,%rsp # align with $aptr
780 lea -64(%rsp,$num,4),%rsp # alloca(frame+4*$num)
781 jmp .Lsqr8x_sp_done
782
783 .align 32
784 .Lsqr8x_sp_alt:
785 lea 4096-64(,$num,4),%r10 # 4096-frame-4*$num
786 lea -64(%rsp,$num,4),%rsp # alloca(frame+4*$num)
787 sub %r10,%r11
788 mov \$0,%r10
789 cmovc %r10,%r11
790 sub %r11,%rsp
791 .Lsqr8x_sp_done:
792 and \$-64,%rsp
793 mov $num,%r10
794 neg $num
795
796 lea 64(%rsp,$num,2),%r11 # copy of modulus
797 mov $n0, 32(%rsp)
798 mov %rax, 40(%rsp) # save original %rsp
799 .Lsqr8x_body:
800
801 mov $num,$i
802 movq %r11, %xmm2 # save pointer to modulus copy
803 shr \$3+2,$i
804 mov OPENSSL_ia32cap_P+8(%rip),%eax
805 jmp .Lsqr8x_copy_n
806
807 .align 32
808 .Lsqr8x_copy_n:
809 movq 8*0($nptr),%xmm0
810 movq 8*1($nptr),%xmm1
811 movq 8*2($nptr),%xmm3
812 movq 8*3($nptr),%xmm4
813 lea 8*4($nptr),$nptr
814 movdqa %xmm0,16*0(%r11)
815 movdqa %xmm1,16*1(%r11)
816 movdqa %xmm3,16*2(%r11)
817 movdqa %xmm4,16*3(%r11)
818 lea 16*4(%r11),%r11
819 dec $i
820 jnz .Lsqr8x_copy_n
821
822 pxor %xmm0,%xmm0
823 movq $rptr,%xmm1 # save $rptr
824 movq %r10, %xmm3 # -$num
825 ___
826 $code.=<<___ if ($addx);
827 and \$0x80100,%eax
828 cmp \$0x80100,%eax
829 jne .Lsqr8x_nox
830
831 call bn_sqrx8x_internal # see x86_64-mont5 module
832
833 pxor %xmm0,%xmm0
834 lea 48(%rsp),%rax
835 lea 64(%rsp,$num,2),%rdx
836 shr \$3+2,$num
837 mov 40(%rsp),%rsi # restore %rsp
838 jmp .Lsqr8x_zero
839
840 .align 32
841 .Lsqr8x_nox:
842 ___
843 $code.=<<___;
844 call bn_sqr8x_internal # see x86_64-mont5 module
845
846 pxor %xmm0,%xmm0
847 lea 48(%rsp),%rax
848 lea 64(%rsp,$num,2),%rdx
849 shr \$3+2,$num
850 mov 40(%rsp),%rsi # restore %rsp
851 jmp .Lsqr8x_zero
852
853 .align 32
854 .Lsqr8x_zero:
855 movdqa %xmm0,16*0(%rax) # wipe t
856 movdqa %xmm0,16*1(%rax)
857 movdqa %xmm0,16*2(%rax)
858 movdqa %xmm0,16*3(%rax)
859 lea 16*4(%rax),%rax
860 movdqa %xmm0,16*0(%rdx) # wipe n
861 movdqa %xmm0,16*1(%rdx)
862 movdqa %xmm0,16*2(%rdx)
863 movdqa %xmm0,16*3(%rdx)
864 lea 16*4(%rdx),%rdx
865 dec $num
866 jnz .Lsqr8x_zero
867
868 mov \$1,%rax
869 mov -48(%rsi),%r15
870 mov -40(%rsi),%r14
871 mov -32(%rsi),%r13
872 mov -24(%rsi),%r12
873 mov -16(%rsi),%rbp
874 mov -8(%rsi),%rbx
875 lea (%rsi),%rsp
876 .Lsqr8x_epilogue:
877 ret
878 .size bn_sqr8x_mont,.-bn_sqr8x_mont
879 ___
880 }}}
881 \f
882 if ($addx) {{{
883 my $bp="%rdx"; # original value
884
885 $code.=<<___;
886 .type bn_mulx4x_mont,\@function,6
887 .align 32
888 bn_mulx4x_mont:
889 .Lmulx4x_enter:
890 mov %rsp,%rax
891 push %rbx
892 push %rbp
893 push %r12
894 push %r13
895 push %r14
896 push %r15
897
898 shl \$3,${num}d # convert $num to bytes
899 .byte 0x67
900 xor %r10,%r10
901 sub $num,%r10 # -$num
902 mov ($n0),$n0 # *n0
903 lea -72(%rsp,%r10),%rsp # alloca(frame+$num+8)
904 lea ($bp,$num),%r10
905 and \$-128,%rsp
906 ##############################################################
907 # Stack layout
908 # +0 num
909 # +8 off-loaded &b[i]
910 # +16 end of b[num]
911 # +24 saved n0
912 # +32 saved rp
913 # +40 saved %rsp
914 # +48 inner counter
915 # +56
916 # +64 tmp[num+1]
917 #
918 mov $num,0(%rsp) # save $num
919 shr \$5,$num
920 mov %r10,16(%rsp) # end of b[num]
921 sub \$1,$num
922 mov $n0, 24(%rsp) # save *n0
923 mov $rp, 32(%rsp) # save $rp
924 mov %rax,40(%rsp) # save original %rsp
925 mov $num,48(%rsp) # inner counter
926 jmp .Lmulx4x_body
927
928 .align 32
929 .Lmulx4x_body:
930 ___
931 my ($aptr, $bptr, $nptr, $tptr, $mi, $bi, $zero, $num)=
932 ("%rsi","%rdi","%rcx","%rbx","%r8","%r9","%rbp","%rax");
933 my $rptr=$bptr;
934 $code.=<<___;
935 lea 8($bp),$bptr
936 mov ($bp),%rdx # b[0], $bp==%rdx actually
937 lea 64+32(%rsp),$tptr
938 mov %rdx,$bi
939
940 mulx 0*8($aptr),$mi,%rax # a[0]*b[0]
941 mulx 1*8($aptr),%r11,%r14 # a[1]*b[0]
942 add %rax,%r11
943 mov $bptr,8(%rsp) # off-load &b[i]
944 mulx 2*8($aptr),%r12,%r13 # ...
945 adc %r14,%r12
946 adc \$0,%r13
947
948 mov $mi,$bptr # borrow $bptr
949 imulq 24(%rsp),$mi # "t[0]"*n0
950 xor $zero,$zero # cf=0, of=0
951
952 mulx 3*8($aptr),%rax,%r14
953 mov $mi,%rdx
954 lea 4*8($aptr),$aptr
955 adcx %rax,%r13
956 adcx $zero,%r14 # cf=0
957
958 mulx 0*8($nptr),%rax,%r10
959 adcx %rax,$bptr # discarded
960 adox %r11,%r10
961 mulx 1*8($nptr),%rax,%r11
962 adcx %rax,%r10
963 adox %r12,%r11
964 .byte 0xc4,0x62,0xfb,0xf6,0xa1,0x10,0x00,0x00,0x00 # mulx 2*8($nptr),%rax,%r12
965 mov 48(%rsp),$bptr # counter value
966 mov %r10,-4*8($tptr)
967 adcx %rax,%r11
968 adox %r13,%r12
969 mulx 3*8($nptr),%rax,%r15
970 mov $bi,%rdx
971 mov %r11,-3*8($tptr)
972 adcx %rax,%r12
973 adox $zero,%r15 # of=0
974 lea 4*8($nptr),$nptr
975 mov %r12,-2*8($tptr)
976
977 jmp .Lmulx4x_1st
978
979 .align 32
980 .Lmulx4x_1st:
981 adcx $zero,%r15 # cf=0, modulo-scheduled
982 mulx 0*8($aptr),%r10,%rax # a[4]*b[0]
983 adcx %r14,%r10
984 mulx 1*8($aptr),%r11,%r14 # a[5]*b[0]
985 adcx %rax,%r11
986 mulx 2*8($aptr),%r12,%rax # ...
987 adcx %r14,%r12
988 mulx 3*8($aptr),%r13,%r14
989 .byte 0x67,0x67
990 mov $mi,%rdx
991 adcx %rax,%r13
992 adcx $zero,%r14 # cf=0
993 lea 4*8($aptr),$aptr
994 lea 4*8($tptr),$tptr
995
996 adox %r15,%r10
997 mulx 0*8($nptr),%rax,%r15
998 adcx %rax,%r10
999 adox %r15,%r11
1000 mulx 1*8($nptr),%rax,%r15
1001 adcx %rax,%r11
1002 adox %r15,%r12
1003 mulx 2*8($nptr),%rax,%r15
1004 mov %r10,-5*8($tptr)
1005 adcx %rax,%r12
1006 mov %r11,-4*8($tptr)
1007 adox %r15,%r13
1008 mulx 3*8($nptr),%rax,%r15
1009 mov $bi,%rdx
1010 mov %r12,-3*8($tptr)
1011 adcx %rax,%r13
1012 adox $zero,%r15
1013 lea 4*8($nptr),$nptr
1014 mov %r13,-2*8($tptr)
1015
1016 dec $bptr # of=0, pass cf
1017 jnz .Lmulx4x_1st
1018
1019 mov 0(%rsp),$num # load num
1020 mov 8(%rsp),$bptr # re-load &b[i]
1021 adc $zero,%r15 # modulo-scheduled
1022 add %r15,%r14
1023 sbb %r15,%r15 # top-most carry
1024 mov %r14,-1*8($tptr)
1025 jmp .Lmulx4x_outer
1026
1027 .align 32
1028 .Lmulx4x_outer:
1029 mov ($bptr),%rdx # b[i]
1030 lea 8($bptr),$bptr # b++
1031 sub $num,$aptr # rewind $aptr
1032 mov %r15,($tptr) # save top-most carry
1033 lea 64+4*8(%rsp),$tptr
1034 sub $num,$nptr # rewind $nptr
1035
1036 mulx 0*8($aptr),$mi,%r11 # a[0]*b[i]
1037 xor %ebp,%ebp # xor $zero,$zero # cf=0, of=0
1038 mov %rdx,$bi
1039 mulx 1*8($aptr),%r14,%r12 # a[1]*b[i]
1040 adox -4*8($tptr),$mi
1041 adcx %r14,%r11
1042 mulx 2*8($aptr),%r15,%r13 # ...
1043 adox -3*8($tptr),%r11
1044 adcx %r15,%r12
1045 adox $zero,%r12
1046 adcx $zero,%r13
1047
1048 mov $bptr,8(%rsp) # off-load &b[i]
1049 .byte 0x67
1050 mov $mi,%r15
1051 imulq 24(%rsp),$mi # "t[0]"*n0
1052 xor %ebp,%ebp # xor $zero,$zero # cf=0, of=0
1053
1054 mulx 3*8($aptr),%rax,%r14
1055 mov $mi,%rdx
1056 adox -2*8($tptr),%r12
1057 adcx %rax,%r13
1058 adox -1*8($tptr),%r13
1059 adcx $zero,%r14
1060 lea 4*8($aptr),$aptr
1061 adox $zero,%r14
1062
1063 mulx 0*8($nptr),%rax,%r10
1064 adcx %rax,%r15 # discarded
1065 adox %r11,%r10
1066 mulx 1*8($nptr),%rax,%r11
1067 adcx %rax,%r10
1068 adox %r12,%r11
1069 mulx 2*8($nptr),%rax,%r12
1070 mov %r10,-4*8($tptr)
1071 adcx %rax,%r11
1072 adox %r13,%r12
1073 mulx 3*8($nptr),%rax,%r15
1074 mov $bi,%rdx
1075 mov %r11,-3*8($tptr)
1076 lea 4*8($nptr),$nptr
1077 adcx %rax,%r12
1078 adox $zero,%r15 # of=0
1079 mov 48(%rsp),$bptr # counter value
1080 mov %r12,-2*8($tptr)
1081
1082 jmp .Lmulx4x_inner
1083
1084 .align 32
1085 .Lmulx4x_inner:
1086 mulx 0*8($aptr),%r10,%rax # a[4]*b[i]
1087 adcx $zero,%r15 # cf=0, modulo-scheduled
1088 adox %r14,%r10
1089 mulx 1*8($aptr),%r11,%r14 # a[5]*b[i]
1090 adcx 0*8($tptr),%r10
1091 adox %rax,%r11
1092 mulx 2*8($aptr),%r12,%rax # ...
1093 adcx 1*8($tptr),%r11
1094 adox %r14,%r12
1095 mulx 3*8($aptr),%r13,%r14
1096 mov $mi,%rdx
1097 adcx 2*8($tptr),%r12
1098 adox %rax,%r13
1099 adcx 3*8($tptr),%r13
1100 adox $zero,%r14 # of=0
1101 lea 4*8($aptr),$aptr
1102 lea 4*8($tptr),$tptr
1103 adcx $zero,%r14 # cf=0
1104
1105 adox %r15,%r10
1106 mulx 0*8($nptr),%rax,%r15
1107 adcx %rax,%r10
1108 adox %r15,%r11
1109 mulx 1*8($nptr),%rax,%r15
1110 adcx %rax,%r11
1111 adox %r15,%r12
1112 mulx 2*8($nptr),%rax,%r15
1113 mov %r10,-5*8($tptr)
1114 adcx %rax,%r12
1115 adox %r15,%r13
1116 mulx 3*8($nptr),%rax,%r15
1117 mov $bi,%rdx
1118 mov %r11,-4*8($tptr)
1119 mov %r12,-3*8($tptr)
1120 adcx %rax,%r13
1121 adox $zero,%r15
1122 lea 4*8($nptr),$nptr
1123 mov %r13,-2*8($tptr)
1124
1125 dec $bptr # of=0, pass cf
1126 jnz .Lmulx4x_inner
1127
1128 mov 0(%rsp),$num # load num
1129 mov 8(%rsp),$bptr # re-load &b[i]
1130 adc $zero,%r15 # modulo-scheduled
1131 sub 0*8($tptr),$zero # pull top-most carry
1132 adc %r15,%r14
1133 mov -8($nptr),$mi
1134 sbb %r15,%r15 # top-most carry
1135 mov %r14,-1*8($tptr)
1136
1137 cmp 16(%rsp),$bptr
1138 jne .Lmulx4x_outer
1139
1140 sub %r14,$mi # compare top-most words
1141 sbb $mi,$mi
1142 or $mi,%r15
1143
1144 neg $num
1145 xor %rdx,%rdx
1146 mov 32(%rsp),$rptr # restore rp
1147 lea 64(%rsp),$tptr
1148
1149 pxor %xmm0,%xmm0
1150 mov 0*8($nptr,$num),%r8
1151 mov 1*8($nptr,$num),%r9
1152 neg %r8
1153 jmp .Lmulx4x_sub_entry
1154
1155 .align 32
1156 .Lmulx4x_sub:
1157 mov 0*8($nptr,$num),%r8
1158 mov 1*8($nptr,$num),%r9
1159 not %r8
1160 .Lmulx4x_sub_entry:
1161 mov 2*8($nptr,$num),%r10
1162 not %r9
1163 and %r15,%r8
1164 mov 3*8($nptr,$num),%r11
1165 not %r10
1166 and %r15,%r9
1167 not %r11
1168 and %r15,%r10
1169 and %r15,%r11
1170
1171 neg %rdx # mov %rdx,%cf
1172 adc 0*8($tptr),%r8
1173 adc 1*8($tptr),%r9
1174 movdqa %xmm0,($tptr)
1175 adc 2*8($tptr),%r10
1176 adc 3*8($tptr),%r11
1177 movdqa %xmm0,16($tptr)
1178 lea 4*8($tptr),$tptr
1179 sbb %rdx,%rdx # mov %cf,%rdx
1180
1181 mov %r8,0*8($rptr)
1182 mov %r9,1*8($rptr)
1183 mov %r10,2*8($rptr)
1184 mov %r11,3*8($rptr)
1185 lea 4*8($rptr),$rptr
1186
1187 add \$32,$num
1188 jnz .Lmulx4x_sub
1189
1190 mov 40(%rsp),%rsi # restore %rsp
1191 mov \$1,%rax
1192 mov -48(%rsi),%r15
1193 mov -40(%rsi),%r14
1194 mov -32(%rsi),%r13
1195 mov -24(%rsi),%r12
1196 mov -16(%rsi),%rbp
1197 mov -8(%rsi),%rbx
1198 lea (%rsi),%rsp
1199 .Lmulx4x_epilogue:
1200 ret
1201 .size bn_mulx4x_mont,.-bn_mulx4x_mont
1202 ___
1203 }}}
1204 $code.=<<___;
1205 .asciz "Montgomery Multiplication for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
1206 .align 16
1207 ___
1208
1209 # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
1210 # CONTEXT *context,DISPATCHER_CONTEXT *disp)
1211 if ($win64) {
1212 $rec="%rcx";
1213 $frame="%rdx";
1214 $context="%r8";
1215 $disp="%r9";
1216
1217 $code.=<<___;
1218 .extern __imp_RtlVirtualUnwind
1219 .type mul_handler,\@abi-omnipotent
1220 .align 16
1221 mul_handler:
1222 push %rsi
1223 push %rdi
1224 push %rbx
1225 push %rbp
1226 push %r12
1227 push %r13
1228 push %r14
1229 push %r15
1230 pushfq
1231 sub \$64,%rsp
1232
1233 mov 120($context),%rax # pull context->Rax
1234 mov 248($context),%rbx # pull context->Rip
1235
1236 mov 8($disp),%rsi # disp->ImageBase
1237 mov 56($disp),%r11 # disp->HandlerData
1238
1239 mov 0(%r11),%r10d # HandlerData[0]
1240 lea (%rsi,%r10),%r10 # end of prologue label
1241 cmp %r10,%rbx # context->Rip<end of prologue label
1242 jb .Lcommon_seh_tail
1243
1244 mov 152($context),%rax # pull context->Rsp
1245
1246 mov 4(%r11),%r10d # HandlerData[1]
1247 lea (%rsi,%r10),%r10 # epilogue label
1248 cmp %r10,%rbx # context->Rip>=epilogue label
1249 jae .Lcommon_seh_tail
1250
1251 mov 192($context),%r10 # pull $num
1252 mov 8(%rax,%r10,8),%rax # pull saved stack pointer
1253 lea 48(%rax),%rax
1254
1255 mov -8(%rax),%rbx
1256 mov -16(%rax),%rbp
1257 mov -24(%rax),%r12
1258 mov -32(%rax),%r13
1259 mov -40(%rax),%r14
1260 mov -48(%rax),%r15
1261 mov %rbx,144($context) # restore context->Rbx
1262 mov %rbp,160($context) # restore context->Rbp
1263 mov %r12,216($context) # restore context->R12
1264 mov %r13,224($context) # restore context->R13
1265 mov %r14,232($context) # restore context->R14
1266 mov %r15,240($context) # restore context->R15
1267
1268 jmp .Lcommon_seh_tail
1269 .size mul_handler,.-mul_handler
1270
1271 .type sqr_handler,\@abi-omnipotent
1272 .align 16
1273 sqr_handler:
1274 push %rsi
1275 push %rdi
1276 push %rbx
1277 push %rbp
1278 push %r12
1279 push %r13
1280 push %r14
1281 push %r15
1282 pushfq
1283 sub \$64,%rsp
1284
1285 mov 120($context),%rax # pull context->Rax
1286 mov 248($context),%rbx # pull context->Rip
1287
1288 mov 8($disp),%rsi # disp->ImageBase
1289 mov 56($disp),%r11 # disp->HandlerData
1290
1291 mov 0(%r11),%r10d # HandlerData[0]
1292 lea (%rsi,%r10),%r10 # end of prologue label
1293 cmp %r10,%rbx # context->Rip<.Lsqr_body
1294 jb .Lcommon_seh_tail
1295
1296 mov 152($context),%rax # pull context->Rsp
1297
1298 mov 4(%r11),%r10d # HandlerData[1]
1299 lea (%rsi,%r10),%r10 # epilogue label
1300 cmp %r10,%rbx # context->Rip>=.Lsqr_epilogue
1301 jae .Lcommon_seh_tail
1302
1303 mov 40(%rax),%rax # pull saved stack pointer
1304
1305 mov -8(%rax),%rbx
1306 mov -16(%rax),%rbp
1307 mov -24(%rax),%r12
1308 mov -32(%rax),%r13
1309 mov -40(%rax),%r14
1310 mov -48(%rax),%r15
1311 mov %rbx,144($context) # restore context->Rbx
1312 mov %rbp,160($context) # restore context->Rbp
1313 mov %r12,216($context) # restore context->R12
1314 mov %r13,224($context) # restore context->R13
1315 mov %r14,232($context) # restore context->R14
1316 mov %r15,240($context) # restore context->R15
1317
1318 .Lcommon_seh_tail:
1319 mov 8(%rax),%rdi
1320 mov 16(%rax),%rsi
1321 mov %rax,152($context) # restore context->Rsp
1322 mov %rsi,168($context) # restore context->Rsi
1323 mov %rdi,176($context) # restore context->Rdi
1324
1325 mov 40($disp),%rdi # disp->ContextRecord
1326 mov $context,%rsi # context
1327 mov \$154,%ecx # sizeof(CONTEXT)
1328 .long 0xa548f3fc # cld; rep movsq
1329
1330 mov $disp,%rsi
1331 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
1332 mov 8(%rsi),%rdx # arg2, disp->ImageBase
1333 mov 0(%rsi),%r8 # arg3, disp->ControlPc
1334 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
1335 mov 40(%rsi),%r10 # disp->ContextRecord
1336 lea 56(%rsi),%r11 # &disp->HandlerData
1337 lea 24(%rsi),%r12 # &disp->EstablisherFrame
1338 mov %r10,32(%rsp) # arg5
1339 mov %r11,40(%rsp) # arg6
1340 mov %r12,48(%rsp) # arg7
1341 mov %rcx,56(%rsp) # arg8, (NULL)
1342 call *__imp_RtlVirtualUnwind(%rip)
1343
1344 mov \$1,%eax # ExceptionContinueSearch
1345 add \$64,%rsp
1346 popfq
1347 pop %r15
1348 pop %r14
1349 pop %r13
1350 pop %r12
1351 pop %rbp
1352 pop %rbx
1353 pop %rdi
1354 pop %rsi
1355 ret
1356 .size sqr_handler,.-sqr_handler
1357
1358 .section .pdata
1359 .align 4
1360 .rva .LSEH_begin_bn_mul_mont
1361 .rva .LSEH_end_bn_mul_mont
1362 .rva .LSEH_info_bn_mul_mont
1363
1364 .rva .LSEH_begin_bn_mul4x_mont
1365 .rva .LSEH_end_bn_mul4x_mont
1366 .rva .LSEH_info_bn_mul4x_mont
1367
1368 .rva .LSEH_begin_bn_sqr8x_mont
1369 .rva .LSEH_end_bn_sqr8x_mont
1370 .rva .LSEH_info_bn_sqr8x_mont
1371 ___
1372 $code.=<<___ if ($addx);
1373 .rva .LSEH_begin_bn_mulx4x_mont
1374 .rva .LSEH_end_bn_mulx4x_mont
1375 .rva .LSEH_info_bn_mulx4x_mont
1376 ___
1377 $code.=<<___;
1378 .section .xdata
1379 .align 8
1380 .LSEH_info_bn_mul_mont:
1381 .byte 9,0,0,0
1382 .rva mul_handler
1383 .rva .Lmul_body,.Lmul_epilogue # HandlerData[]
1384 .LSEH_info_bn_mul4x_mont:
1385 .byte 9,0,0,0
1386 .rva mul_handler
1387 .rva .Lmul4x_body,.Lmul4x_epilogue # HandlerData[]
1388 .LSEH_info_bn_sqr8x_mont:
1389 .byte 9,0,0,0
1390 .rva sqr_handler
1391 .rva .Lsqr8x_body,.Lsqr8x_epilogue # HandlerData[]
1392 ___
1393 $code.=<<___ if ($addx);
1394 .LSEH_info_bn_mulx4x_mont:
1395 .byte 9,0,0,0
1396 .rva sqr_handler
1397 .rva .Lmulx4x_body,.Lmulx4x_epilogue # HandlerData[]
1398 ___
1399 }
1400
1401 print $code;
1402 close STDOUT;
Tomato firmware and modifications.