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source: vbox/trunk/src/libs/openssl-1.1.1l/crypto/des/asm/des-586.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
File size: 14.6 KB
Line 
1#! /usr/bin/env perl
2# Copyright 1995-2020 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# The inner loop instruction sequence and the IP/FP modifications are from
10# Svend Olaf Mikkelsen.
11
12$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
13push(@INC,"${dir}","${dir}../../perlasm");
14require "x86asm.pl";
15require "cbc.pl";
16require "desboth.pl";
17
18# base code is in Microsoft
19# op dest, source
20# format.
21#
22
23$output=pop;
24open STDOUT,">$output";
25
26&asm_init($ARGV[0]);
27
28$L="edi";
29$R="esi";
30$trans="ebp";
31$small_footprint=1 if (grep(/\-DOPENSSL_SMALL_FOOTPRINT/,@ARGV));
32# one can discuss setting this variable to 1 unconditionally, as
33# the folded loop is only 3% slower than unrolled, but >7 times smaller
34
35&public_label("DES_SPtrans");
36&static_label("des_sptrans");
37
38&DES_encrypt_internal();
39&DES_decrypt_internal();
40&DES_encrypt("DES_encrypt1",1);
41&DES_encrypt("DES_encrypt2",0);
42&DES_encrypt3("DES_encrypt3",1);
43&DES_encrypt3("DES_decrypt3",0);
44&cbc("DES_ncbc_encrypt","DES_encrypt1","DES_encrypt1",0,4,5,3,5,-1);
45&cbc("DES_ede3_cbc_encrypt","DES_encrypt3","DES_decrypt3",0,6,7,3,4,5);
46&DES_SPtrans();
47
48&asm_finish();
49
50close STDOUT or die "error closing STDOUT: $!";
51
52sub DES_encrypt_internal()
53 {
54 &function_begin_B("_x86_DES_encrypt");
55
56 if ($small_footprint)
57 {
58 &lea("edx",&DWP(128,"ecx"));
59 &push("edx");
60 &push("ecx");
61 &set_label("eloop");
62 &D_ENCRYPT(0,$L,$R,0,$trans,"eax","ebx","ecx","edx",&swtmp(0));
63 &comment("");
64 &D_ENCRYPT(1,$R,$L,2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
65 &comment("");
66 &add("ecx",16);
67 &cmp("ecx",&swtmp(1));
68 &mov(&swtmp(0),"ecx");
69 &jb(&label("eloop"));
70 &add("esp",8);
71 }
72 else
73 {
74 &push("ecx");
75 for ($i=0; $i<16; $i+=2)
76 {
77 &comment("Round $i");
78 &D_ENCRYPT($i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
79 &comment("Round ".sprintf("%d",$i+1));
80 &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
81 }
82 &add("esp",4);
83 }
84 &ret();
85
86 &function_end_B("_x86_DES_encrypt");
87 }
88
89sub DES_decrypt_internal()
90 {
91 &function_begin_B("_x86_DES_decrypt");
92
93 if ($small_footprint)
94 {
95 &push("ecx");
96 &lea("ecx",&DWP(128,"ecx"));
97 &push("ecx");
98 &set_label("dloop");
99 &D_ENCRYPT(0,$L,$R,-2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
100 &comment("");
101 &D_ENCRYPT(1,$R,$L,-4,$trans,"eax","ebx","ecx","edx",&swtmp(0));
102 &comment("");
103 &sub("ecx",16);
104 &cmp("ecx",&swtmp(1));
105 &mov(&swtmp(0),"ecx");
106 &ja(&label("dloop"));
107 &add("esp",8);
108 }
109 else
110 {
111 &push("ecx");
112 for ($i=15; $i>0; $i-=2)
113 {
114 &comment("Round $i");
115 &D_ENCRYPT(15-$i,$L,$R,$i*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
116 &comment("Round ".sprintf("%d",$i-1));
117 &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$trans,"eax","ebx","ecx","edx",&swtmp(0));
118 }
119 &add("esp",4);
120 }
121 &ret();
122
123 &function_end_B("_x86_DES_decrypt");
124 }
125
126sub DES_encrypt
127 {
128 local($name,$do_ip)=@_;
129
130 &function_begin_B($name);
131
132 &push("esi");
133 &push("edi");
134
135 &comment("");
136 &comment("Load the 2 words");
137
138 if ($do_ip)
139 {
140 &mov($R,&wparam(0));
141 &xor( "ecx", "ecx" );
142
143 &push("ebx");
144 &push("ebp");
145
146 &mov("eax",&DWP(0,$R,"",0));
147 &mov("ebx",&wparam(2)); # get encrypt flag
148 &mov($L,&DWP(4,$R,"",0));
149 &comment("");
150 &comment("IP");
151 &IP_new("eax",$L,$R,3);
152 }
153 else
154 {
155 &mov("eax",&wparam(0));
156 &xor( "ecx", "ecx" );
157
158 &push("ebx");
159 &push("ebp");
160
161 &mov($R,&DWP(0,"eax","",0));
162 &mov("ebx",&wparam(2)); # get encrypt flag
163 &rotl($R,3);
164 &mov($L,&DWP(4,"eax","",0));
165 &rotl($L,3);
166 }
167
168 # PIC-ification:-)
169 &call (&label("pic_point"));
170 &set_label("pic_point");
171 &blindpop($trans);
172 &lea ($trans,&DWP(&label("des_sptrans")."-".&label("pic_point"),$trans));
173
174 &mov( "ecx", &wparam(1) );
175
176 &cmp("ebx","0");
177 &je(&label("decrypt"));
178 &call("_x86_DES_encrypt");
179 &jmp(&label("done"));
180 &set_label("decrypt");
181 &call("_x86_DES_decrypt");
182 &set_label("done");
183
184 if ($do_ip)
185 {
186 &comment("");
187 &comment("FP");
188 &mov("edx",&wparam(0));
189 &FP_new($L,$R,"eax",3);
190
191 &mov(&DWP(0,"edx","",0),"eax");
192 &mov(&DWP(4,"edx","",0),$R);
193 }
194 else
195 {
196 &comment("");
197 &comment("Fixup");
198 &rotr($L,3); # r
199 &mov("eax",&wparam(0));
200 &rotr($R,3); # l
201 &mov(&DWP(0,"eax","",0),$L);
202 &mov(&DWP(4,"eax","",0),$R);
203 }
204
205 &pop("ebp");
206 &pop("ebx");
207 &pop("edi");
208 &pop("esi");
209 &ret();
210
211 &function_end_B($name);
212 }
213
214sub D_ENCRYPT
215 {
216 local($r,$L,$R,$S,$trans,$u,$tmp1,$tmp2,$t,$wp1)=@_;
217
218 &mov( $u, &DWP(&n2a($S*4),$tmp2,"",0));
219 &xor( $tmp1, $tmp1);
220 &mov( $t, &DWP(&n2a(($S+1)*4),$tmp2,"",0));
221 &xor( $u, $R);
222 &xor( $tmp2, $tmp2);
223 &xor( $t, $R);
224 &and( $u, "0xfcfcfcfc" );
225 &and( $t, "0xcfcfcfcf" );
226 &movb( &LB($tmp1), &LB($u) );
227 &movb( &LB($tmp2), &HB($u) );
228 &rotr( $t, 4 );
229 &xor( $L, &DWP(" ",$trans,$tmp1,0));
230 &movb( &LB($tmp1), &LB($t) );
231 &xor( $L, &DWP("0x200",$trans,$tmp2,0));
232 &movb( &LB($tmp2), &HB($t) );
233 &shr( $u, 16);
234 &xor( $L, &DWP("0x100",$trans,$tmp1,0));
235 &movb( &LB($tmp1), &HB($u) );
236 &shr( $t, 16);
237 &xor( $L, &DWP("0x300",$trans,$tmp2,0));
238 &movb( &LB($tmp2), &HB($t) );
239 &and( $u, "0xff" );
240 &and( $t, "0xff" );
241 &xor( $L, &DWP("0x600",$trans,$tmp1,0));
242 &xor( $L, &DWP("0x700",$trans,$tmp2,0));
243 &mov( $tmp2, $wp1 );
244 &xor( $L, &DWP("0x400",$trans,$u,0));
245 &xor( $L, &DWP("0x500",$trans,$t,0));
246 }
247
248sub n2a
249 {
250 sprintf("%d",$_[0]);
251 }
252
253# now has a side affect of rotating $a by $shift
254sub R_PERM_OP
255 {
256 local($a,$b,$tt,$shift,$mask,$last)=@_;
257
258 &rotl( $a, $shift ) if ($shift != 0);
259 &mov( $tt, $a );
260 &xor( $a, $b );
261 &and( $a, $mask );
262 # This can never succeed, and besides it is difficult to see what the
263 # idea was - Ben 13 Feb 99
264 if (!$last eq $b)
265 {
266 &xor( $b, $a );
267 &xor( $tt, $a );
268 }
269 else
270 {
271 &xor( $tt, $a );
272 &xor( $b, $a );
273 }
274 &comment("");
275 }
276
277sub IP_new
278 {
279 local($l,$r,$tt,$lr)=@_;
280
281 &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
282 &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
283 &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
284 &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
285 &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
286
287 if ($lr != 3)
288 {
289 if (($lr-3) < 0)
290 { &rotr($tt, 3-$lr); }
291 else { &rotl($tt, $lr-3); }
292 }
293 if ($lr != 2)
294 {
295 if (($lr-2) < 0)
296 { &rotr($r, 2-$lr); }
297 else { &rotl($r, $lr-2); }
298 }
299 }
300
301sub FP_new
302 {
303 local($l,$r,$tt,$lr)=@_;
304
305 if ($lr != 2)
306 {
307 if (($lr-2) < 0)
308 { &rotl($r, 2-$lr); }
309 else { &rotr($r, $lr-2); }
310 }
311 if ($lr != 3)
312 {
313 if (($lr-3) < 0)
314 { &rotl($l, 3-$lr); }
315 else { &rotr($l, $lr-3); }
316 }
317
318 &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
319 &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
320 &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
321 &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
322 &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
323 &rotr($tt , 4);
324 }
325
326sub DES_SPtrans
327 {
328 &set_label("DES_SPtrans",64);
329 &set_label("des_sptrans");
330 &data_word(0x02080800, 0x00080000, 0x02000002, 0x02080802);
331 &data_word(0x02000000, 0x00080802, 0x00080002, 0x02000002);
332 &data_word(0x00080802, 0x02080800, 0x02080000, 0x00000802);
333 &data_word(0x02000802, 0x02000000, 0x00000000, 0x00080002);
334 &data_word(0x00080000, 0x00000002, 0x02000800, 0x00080800);
335 &data_word(0x02080802, 0x02080000, 0x00000802, 0x02000800);
336 &data_word(0x00000002, 0x00000800, 0x00080800, 0x02080002);
337 &data_word(0x00000800, 0x02000802, 0x02080002, 0x00000000);
338 &data_word(0x00000000, 0x02080802, 0x02000800, 0x00080002);
339 &data_word(0x02080800, 0x00080000, 0x00000802, 0x02000800);
340 &data_word(0x02080002, 0x00000800, 0x00080800, 0x02000002);
341 &data_word(0x00080802, 0x00000002, 0x02000002, 0x02080000);
342 &data_word(0x02080802, 0x00080800, 0x02080000, 0x02000802);
343 &data_word(0x02000000, 0x00000802, 0x00080002, 0x00000000);
344 &data_word(0x00080000, 0x02000000, 0x02000802, 0x02080800);
345 &data_word(0x00000002, 0x02080002, 0x00000800, 0x00080802);
346 # nibble 1
347 &data_word(0x40108010, 0x00000000, 0x00108000, 0x40100000);
348 &data_word(0x40000010, 0x00008010, 0x40008000, 0x00108000);
349 &data_word(0x00008000, 0x40100010, 0x00000010, 0x40008000);
350 &data_word(0x00100010, 0x40108000, 0x40100000, 0x00000010);
351 &data_word(0x00100000, 0x40008010, 0x40100010, 0x00008000);
352 &data_word(0x00108010, 0x40000000, 0x00000000, 0x00100010);
353 &data_word(0x40008010, 0x00108010, 0x40108000, 0x40000010);
354 &data_word(0x40000000, 0x00100000, 0x00008010, 0x40108010);
355 &data_word(0x00100010, 0x40108000, 0x40008000, 0x00108010);
356 &data_word(0x40108010, 0x00100010, 0x40000010, 0x00000000);
357 &data_word(0x40000000, 0x00008010, 0x00100000, 0x40100010);
358 &data_word(0x00008000, 0x40000000, 0x00108010, 0x40008010);
359 &data_word(0x40108000, 0x00008000, 0x00000000, 0x40000010);
360 &data_word(0x00000010, 0x40108010, 0x00108000, 0x40100000);
361 &data_word(0x40100010, 0x00100000, 0x00008010, 0x40008000);
362 &data_word(0x40008010, 0x00000010, 0x40100000, 0x00108000);
363 # nibble 2
364 &data_word(0x04000001, 0x04040100, 0x00000100, 0x04000101);
365 &data_word(0x00040001, 0x04000000, 0x04000101, 0x00040100);
366 &data_word(0x04000100, 0x00040000, 0x04040000, 0x00000001);
367 &data_word(0x04040101, 0x00000101, 0x00000001, 0x04040001);
368 &data_word(0x00000000, 0x00040001, 0x04040100, 0x00000100);
369 &data_word(0x00000101, 0x04040101, 0x00040000, 0x04000001);
370 &data_word(0x04040001, 0x04000100, 0x00040101, 0x04040000);
371 &data_word(0x00040100, 0x00000000, 0x04000000, 0x00040101);
372 &data_word(0x04040100, 0x00000100, 0x00000001, 0x00040000);
373 &data_word(0x00000101, 0x00040001, 0x04040000, 0x04000101);
374 &data_word(0x00000000, 0x04040100, 0x00040100, 0x04040001);
375 &data_word(0x00040001, 0x04000000, 0x04040101, 0x00000001);
376 &data_word(0x00040101, 0x04000001, 0x04000000, 0x04040101);
377 &data_word(0x00040000, 0x04000100, 0x04000101, 0x00040100);
378 &data_word(0x04000100, 0x00000000, 0x04040001, 0x00000101);
379 &data_word(0x04000001, 0x00040101, 0x00000100, 0x04040000);
380 # nibble 3
381 &data_word(0x00401008, 0x10001000, 0x00000008, 0x10401008);
382 &data_word(0x00000000, 0x10400000, 0x10001008, 0x00400008);
383 &data_word(0x10401000, 0x10000008, 0x10000000, 0x00001008);
384 &data_word(0x10000008, 0x00401008, 0x00400000, 0x10000000);
385 &data_word(0x10400008, 0x00401000, 0x00001000, 0x00000008);
386 &data_word(0x00401000, 0x10001008, 0x10400000, 0x00001000);
387 &data_word(0x00001008, 0x00000000, 0x00400008, 0x10401000);
388 &data_word(0x10001000, 0x10400008, 0x10401008, 0x00400000);
389 &data_word(0x10400008, 0x00001008, 0x00400000, 0x10000008);
390 &data_word(0x00401000, 0x10001000, 0x00000008, 0x10400000);
391 &data_word(0x10001008, 0x00000000, 0x00001000, 0x00400008);
392 &data_word(0x00000000, 0x10400008, 0x10401000, 0x00001000);
393 &data_word(0x10000000, 0x10401008, 0x00401008, 0x00400000);
394 &data_word(0x10401008, 0x00000008, 0x10001000, 0x00401008);
395 &data_word(0x00400008, 0x00401000, 0x10400000, 0x10001008);
396 &data_word(0x00001008, 0x10000000, 0x10000008, 0x10401000);
397 # nibble 4
398 &data_word(0x08000000, 0x00010000, 0x00000400, 0x08010420);
399 &data_word(0x08010020, 0x08000400, 0x00010420, 0x08010000);
400 &data_word(0x00010000, 0x00000020, 0x08000020, 0x00010400);
401 &data_word(0x08000420, 0x08010020, 0x08010400, 0x00000000);
402 &data_word(0x00010400, 0x08000000, 0x00010020, 0x00000420);
403 &data_word(0x08000400, 0x00010420, 0x00000000, 0x08000020);
404 &data_word(0x00000020, 0x08000420, 0x08010420, 0x00010020);
405 &data_word(0x08010000, 0x00000400, 0x00000420, 0x08010400);
406 &data_word(0x08010400, 0x08000420, 0x00010020, 0x08010000);
407 &data_word(0x00010000, 0x00000020, 0x08000020, 0x08000400);
408 &data_word(0x08000000, 0x00010400, 0x08010420, 0x00000000);
409 &data_word(0x00010420, 0x08000000, 0x00000400, 0x00010020);
410 &data_word(0x08000420, 0x00000400, 0x00000000, 0x08010420);
411 &data_word(0x08010020, 0x08010400, 0x00000420, 0x00010000);
412 &data_word(0x00010400, 0x08010020, 0x08000400, 0x00000420);
413 &data_word(0x00000020, 0x00010420, 0x08010000, 0x08000020);
414 # nibble 5
415 &data_word(0x80000040, 0x00200040, 0x00000000, 0x80202000);
416 &data_word(0x00200040, 0x00002000, 0x80002040, 0x00200000);
417 &data_word(0x00002040, 0x80202040, 0x00202000, 0x80000000);
418 &data_word(0x80002000, 0x80000040, 0x80200000, 0x00202040);
419 &data_word(0x00200000, 0x80002040, 0x80200040, 0x00000000);
420 &data_word(0x00002000, 0x00000040, 0x80202000, 0x80200040);
421 &data_word(0x80202040, 0x80200000, 0x80000000, 0x00002040);
422 &data_word(0x00000040, 0x00202000, 0x00202040, 0x80002000);
423 &data_word(0x00002040, 0x80000000, 0x80002000, 0x00202040);
424 &data_word(0x80202000, 0x00200040, 0x00000000, 0x80002000);
425 &data_word(0x80000000, 0x00002000, 0x80200040, 0x00200000);
426 &data_word(0x00200040, 0x80202040, 0x00202000, 0x00000040);
427 &data_word(0x80202040, 0x00202000, 0x00200000, 0x80002040);
428 &data_word(0x80000040, 0x80200000, 0x00202040, 0x00000000);
429 &data_word(0x00002000, 0x80000040, 0x80002040, 0x80202000);
430 &data_word(0x80200000, 0x00002040, 0x00000040, 0x80200040);
431 # nibble 6
432 &data_word(0x00004000, 0x00000200, 0x01000200, 0x01000004);
433 &data_word(0x01004204, 0x00004004, 0x00004200, 0x00000000);
434 &data_word(0x01000000, 0x01000204, 0x00000204, 0x01004000);
435 &data_word(0x00000004, 0x01004200, 0x01004000, 0x00000204);
436 &data_word(0x01000204, 0x00004000, 0x00004004, 0x01004204);
437 &data_word(0x00000000, 0x01000200, 0x01000004, 0x00004200);
438 &data_word(0x01004004, 0x00004204, 0x01004200, 0x00000004);
439 &data_word(0x00004204, 0x01004004, 0x00000200, 0x01000000);
440 &data_word(0x00004204, 0x01004000, 0x01004004, 0x00000204);
441 &data_word(0x00004000, 0x00000200, 0x01000000, 0x01004004);
442 &data_word(0x01000204, 0x00004204, 0x00004200, 0x00000000);
443 &data_word(0x00000200, 0x01000004, 0x00000004, 0x01000200);
444 &data_word(0x00000000, 0x01000204, 0x01000200, 0x00004200);
445 &data_word(0x00000204, 0x00004000, 0x01004204, 0x01000000);
446 &data_word(0x01004200, 0x00000004, 0x00004004, 0x01004204);
447 &data_word(0x01000004, 0x01004200, 0x01004000, 0x00004004);
448 # nibble 7
449 &data_word(0x20800080, 0x20820000, 0x00020080, 0x00000000);
450 &data_word(0x20020000, 0x00800080, 0x20800000, 0x20820080);
451 &data_word(0x00000080, 0x20000000, 0x00820000, 0x00020080);
452 &data_word(0x00820080, 0x20020080, 0x20000080, 0x20800000);
453 &data_word(0x00020000, 0x00820080, 0x00800080, 0x20020000);
454 &data_word(0x20820080, 0x20000080, 0x00000000, 0x00820000);
455 &data_word(0x20000000, 0x00800000, 0x20020080, 0x20800080);
456 &data_word(0x00800000, 0x00020000, 0x20820000, 0x00000080);
457 &data_word(0x00800000, 0x00020000, 0x20000080, 0x20820080);
458 &data_word(0x00020080, 0x20000000, 0x00000000, 0x00820000);
459 &data_word(0x20800080, 0x20020080, 0x20020000, 0x00800080);
460 &data_word(0x20820000, 0x00000080, 0x00800080, 0x20020000);
461 &data_word(0x20820080, 0x00800000, 0x20800000, 0x20000080);
462 &data_word(0x00820000, 0x00020080, 0x20020080, 0x20800000);
463 &data_word(0x00000080, 0x20820000, 0x00820080, 0x00000000);
464 &data_word(0x20000000, 0x20800080, 0x00020000, 0x00820080);
465 }
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