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1#!/usr/bin/env perl
2
3# ====================================================================
4# Written by Andy Polyakov <appro@fy.chalmers.se> 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# AES for s390x.
11
12# April 2007.
13#
14# Software performance improvement over gcc-generated code is ~70% and
15# in absolute terms is ~73 cycles per byte processed with 128-bit key.
16# You're likely to exclaim "why so slow?" Keep in mind that z-CPUs are
17# *strictly* in-order execution and issued instruction [in this case
18# load value from memory is critical] has to complete before execution
19# flow proceeds. S-boxes are compressed to 2KB[+256B].
20#
21# As for hardware acceleration support. It's basically a "teaser," as
22# it can and should be improved in several ways. Most notably support
23# for CBC is not utilized, nor multiple blocks are ever processed.
24# Then software key schedule can be postponed till hardware support
25# detection... Performance improvement over assembler is reportedly
26# ~2.5x, but can reach >8x [naturally on larger chunks] if proper
27# support is implemented.
28
29# May 2007.
30#
31# Implement AES_set_[en|de]crypt_key. Key schedule setup is avoided
32# for 128-bit keys, if hardware support is detected.
33
34# Januray 2009.
35#
36# Add support for hardware AES192/256 and reschedule instructions to
37# minimize/avoid Address Generation Interlock hazard and to favour
38# dual-issue z10 pipeline. This gave ~25% improvement on z10 and
39# almost 50% on z9. The gain is smaller on z10, because being dual-
40# issue z10 makes it improssible to eliminate the interlock condition:
41# critial path is not long enough. Yet it spends ~24 cycles per byte
42# processed with 128-bit key.
43#
44# Unlike previous version hardware support detection takes place only
45# at the moment of key schedule setup, which is denoted in key->rounds.
46# This is done, because deferred key setup can't be made MT-safe, not
47# for key lengthes longer than 128 bits.
48#
49# Add AES_cbc_encrypt, which gives incredible performance improvement,
50# it was measured to be ~6.6x. It's less than previously mentioned 8x,
51# because software implementation was optimized.
52
53$softonly=0; # allow hardware support
54
55$t0="%r0"; $mask="%r0";
56$t1="%r1";
57$t2="%r2"; $inp="%r2";
58$t3="%r3"; $out="%r3"; $bits="%r3";
59$key="%r4";
60$i1="%r5";
61$i2="%r6";
62$i3="%r7";
63$s0="%r8";
64$s1="%r9";
65$s2="%r10";
66$s3="%r11";
67$tbl="%r12";
68$rounds="%r13";
69$ra="%r14";
70$sp="%r15";
71
72sub _data_word()
73{ my $i;
74 while(defined($i=shift)) { $code.=sprintf".long\t0x%08x,0x%08x\n",$i,$i; }
75}
76
77$code=<<___;
78.text
79
80.type AES_Te,\@object
81.align 256
82AES_Te:
83___
84&_data_word(
85 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d,
86 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554,
87 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d,
88 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a,
89 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87,
90 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b,
91 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea,
92 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b,
93 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a,
94 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f,
95 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108,
96 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f,
97 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e,
98 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5,
99 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d,
100 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f,
101 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e,
102 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb,
103 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce,
104 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497,
105 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c,
106 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed,
107 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b,
108 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a,
109 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16,
110 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594,
111 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81,
112 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3,
113 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a,
114 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504,
115 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163,
116 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d,
117 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f,
118 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739,
119 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47,
120 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395,
121 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f,
122 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883,
123 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c,
124 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76,
125 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e,
126 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4,
127 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6,
128 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b,
129 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7,
130 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0,
131 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25,
132 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818,
133 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72,
134 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651,
135 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21,
136 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85,
137 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa,
138 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12,
139 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0,
140 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9,
141 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133,
142 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7,
143 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920,
144 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a,
145 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17,
146 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8,
147 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11,
148 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a);
149$code.=<<___;
150# Te4[256]
151.byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
152.byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
153.byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
154.byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
155.byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
156.byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
157.byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
158.byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
159.byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
160.byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
161.byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
162.byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
163.byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
164.byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
165.byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
166.byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
167.byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
168.byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
169.byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
170.byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
171.byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
172.byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
173.byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
174.byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
175.byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
176.byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
177.byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
178.byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
179.byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
180.byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
181.byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
182.byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
183# rcon[]
184.long 0x01000000, 0x02000000, 0x04000000, 0x08000000
185.long 0x10000000, 0x20000000, 0x40000000, 0x80000000
186.long 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
187.align 256
188.size AES_Te,.-AES_Te
189
190# void AES_encrypt(const unsigned char *inp, unsigned char *out,
191# const AES_KEY *key) {
192.globl AES_encrypt
193.type AES_encrypt,\@function
194AES_encrypt:
195___
196$code.=<<___ if (!$softonly);
197 l %r0,240($key)
198 lhi %r1,16
199 clr %r0,%r1
200 jl .Lesoft
201
202 la %r1,0($key)
203 #la %r2,0($inp)
204 la %r4,0($out)
205 lghi %r3,16 # single block length
206 .long 0xb92e0042 # km %r4,%r2
207 brc 1,.-4 # can this happen?
208 br %r14
209.align 64
210.Lesoft:
211___
212$code.=<<___;
213 stmg %r3,$ra,24($sp)
214
215 llgf $s0,0($inp)
216 llgf $s1,4($inp)
217 llgf $s2,8($inp)
218 llgf $s3,12($inp)
219
220 larl $tbl,AES_Te
221 bras $ra,_s390x_AES_encrypt
222
223 lg $out,24($sp)
224 st $s0,0($out)
225 st $s1,4($out)
226 st $s2,8($out)
227 st $s3,12($out)
228
229 lmg %r6,$ra,48($sp)
230 br $ra
231.size AES_encrypt,.-AES_encrypt
232
233.type _s390x_AES_encrypt,\@function
234.align 16
235_s390x_AES_encrypt:
236 stg $ra,152($sp)
237 x $s0,0($key)
238 x $s1,4($key)
239 x $s2,8($key)
240 x $s3,12($key)
241 l $rounds,240($key)
242 llill $mask,`0xff<<3`
243 aghi $rounds,-1
244 j .Lenc_loop
245.align 16
246.Lenc_loop:
247 sllg $t1,$s0,`0+3`
248 srlg $t2,$s0,`8-3`
249 srlg $t3,$s0,`16-3`
250 srl $s0,`24-3`
251 nr $s0,$mask
252 ngr $t1,$mask
253 nr $t2,$mask
254 nr $t3,$mask
255
256 srlg $i1,$s1,`16-3` # i0
257 sllg $i2,$s1,`0+3`
258 srlg $i3,$s1,`8-3`
259 srl $s1,`24-3`
260 nr $i1,$mask
261 nr $s1,$mask
262 ngr $i2,$mask
263 nr $i3,$mask
264
265 l $s0,0($s0,$tbl) # Te0[s0>>24]
266 l $t1,1($t1,$tbl) # Te3[s0>>0]
267 l $t2,2($t2,$tbl) # Te2[s0>>8]
268 l $t3,3($t3,$tbl) # Te1[s0>>16]
269
270 x $s0,3($i1,$tbl) # Te1[s1>>16]
271 l $s1,0($s1,$tbl) # Te0[s1>>24]
272 x $t2,1($i2,$tbl) # Te3[s1>>0]
273 x $t3,2($i3,$tbl) # Te2[s1>>8]
274
275 srlg $i1,$s2,`8-3` # i0
276 srlg $i2,$s2,`16-3` # i1
277 nr $i1,$mask
278 nr $i2,$mask
279 sllg $i3,$s2,`0+3`
280 srl $s2,`24-3`
281 nr $s2,$mask
282 ngr $i3,$mask
283
284 xr $s1,$t1
285 srlg $ra,$s3,`8-3` # i1
286 sllg $t1,$s3,`0+3` # i0
287 nr $ra,$mask
288 la $key,16($key)
289 ngr $t1,$mask
290
291 x $s0,2($i1,$tbl) # Te2[s2>>8]
292 x $s1,3($i2,$tbl) # Te1[s2>>16]
293 l $s2,0($s2,$tbl) # Te0[s2>>24]
294 x $t3,1($i3,$tbl) # Te3[s2>>0]
295
296 srlg $i3,$s3,`16-3` # i2
297 xr $s2,$t2
298 srl $s3,`24-3`
299 nr $i3,$mask
300 nr $s3,$mask
301
302 x $s0,0($key)
303 x $s1,4($key)
304 x $s2,8($key)
305 x $t3,12($key)
306
307 x $s0,1($t1,$tbl) # Te3[s3>>0]
308 x $s1,2($ra,$tbl) # Te2[s3>>8]
309 x $s2,3($i3,$tbl) # Te1[s3>>16]
310 l $s3,0($s3,$tbl) # Te0[s3>>24]
311 xr $s3,$t3
312
313 brct $rounds,.Lenc_loop
314 .align 16
315
316 sllg $t1,$s0,`0+3`
317 srlg $t2,$s0,`8-3`
318 ngr $t1,$mask
319 srlg $t3,$s0,`16-3`
320 srl $s0,`24-3`
321 nr $s0,$mask
322 nr $t2,$mask
323 nr $t3,$mask
324
325 srlg $i1,$s1,`16-3` # i0
326 sllg $i2,$s1,`0+3`
327 ngr $i2,$mask
328 srlg $i3,$s1,`8-3`
329 srl $s1,`24-3`
330 nr $i1,$mask
331 nr $s1,$mask
332 nr $i3,$mask
333
334 llgc $s0,2($s0,$tbl) # Te4[s0>>24]
335 llgc $t1,2($t1,$tbl) # Te4[s0>>0]
336 sll $s0,24
337 llgc $t2,2($t2,$tbl) # Te4[s0>>8]
338 llgc $t3,2($t3,$tbl) # Te4[s0>>16]
339 sll $t2,8
340 sll $t3,16
341
342 llgc $i1,2($i1,$tbl) # Te4[s1>>16]
343 llgc $s1,2($s1,$tbl) # Te4[s1>>24]
344 llgc $i2,2($i2,$tbl) # Te4[s1>>0]
345 llgc $i3,2($i3,$tbl) # Te4[s1>>8]
346 sll $i1,16
347 sll $s1,24
348 sll $i3,8
349 or $s0,$i1
350 or $s1,$t1
351 or $t2,$i2
352 or $t3,$i3
353
354 srlg $i1,$s2,`8-3` # i0
355 srlg $i2,$s2,`16-3` # i1
356 nr $i1,$mask
357 nr $i2,$mask
358 sllg $i3,$s2,`0+3`
359 srl $s2,`24-3`
360 ngr $i3,$mask
361 nr $s2,$mask
362
363 sllg $t1,$s3,`0+3` # i0
364 srlg $ra,$s3,`8-3` # i1
365 ngr $t1,$mask
366
367 llgc $i1,2($i1,$tbl) # Te4[s2>>8]
368 llgc $i2,2($i2,$tbl) # Te4[s2>>16]
369 sll $i1,8
370 llgc $s2,2($s2,$tbl) # Te4[s2>>24]
371 llgc $i3,2($i3,$tbl) # Te4[s2>>0]
372 sll $i2,16
373 nr $ra,$mask
374 sll $s2,24
375 or $s0,$i1
376 or $s1,$i2
377 or $s2,$t2
378 or $t3,$i3
379
380 srlg $i3,$s3,`16-3` # i2
381 srl $s3,`24-3`
382 nr $i3,$mask
383 nr $s3,$mask
384
385 l $t0,16($key)
386 l $t2,20($key)
387
388 llgc $i1,2($t1,$tbl) # Te4[s3>>0]
389 llgc $i2,2($ra,$tbl) # Te4[s3>>8]
390 llgc $i3,2($i3,$tbl) # Te4[s3>>16]
391 llgc $s3,2($s3,$tbl) # Te4[s3>>24]
392 sll $i2,8
393 sll $i3,16
394 sll $s3,24
395 or $s0,$i1
396 or $s1,$i2
397 or $s2,$i3
398 or $s3,$t3
399
400 lg $ra,152($sp)
401 xr $s0,$t0
402 xr $s1,$t2
403 x $s2,24($key)
404 x $s3,28($key)
405
406 br $ra
407.size _s390x_AES_encrypt,.-_s390x_AES_encrypt
408___
409
410$code.=<<___;
411.type AES_Td,\@object
412.align 256
413AES_Td:
414___
415&_data_word(
416 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96,
417 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393,
418 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25,
419 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f,
420 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1,
421 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6,
422 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da,
423 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844,
424 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd,
425 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4,
426 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45,
427 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94,
428 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7,
429 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a,
430 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5,
431 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c,
432 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1,
433 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a,
434 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75,
435 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051,
436 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46,
437 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff,
438 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77,
439 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb,
440 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000,
441 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e,
442 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927,
443 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a,
444 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e,
445 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16,
446 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d,
447 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8,
448 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd,
449 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34,
450 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163,
451 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120,
452 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d,
453 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0,
454 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422,
455 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef,
456 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36,
457 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4,
458 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662,
459 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5,
460 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3,
461 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b,
462 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8,
463 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6,
464 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6,
465 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0,
466 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815,
467 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f,
468 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df,
469 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f,
470 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e,
471 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713,
472 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89,
473 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c,
474 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf,
475 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86,
476 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f,
477 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541,
478 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190,
479 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742);
480$code.=<<___;
481# Td4[256]
482.byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
483.byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
484.byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
485.byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
486.byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
487.byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
488.byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
489.byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
490.byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
491.byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
492.byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
493.byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
494.byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
495.byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
496.byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
497.byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
498.byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
499.byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
500.byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
501.byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
502.byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
503.byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
504.byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
505.byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
506.byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
507.byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
508.byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
509.byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
510.byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
511.byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
512.byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
513.byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
514.size AES_Td,.-AES_Td
515
516# void AES_decrypt(const unsigned char *inp, unsigned char *out,
517# const AES_KEY *key) {
518.globl AES_decrypt
519.type AES_decrypt,\@function
520AES_decrypt:
521___
522$code.=<<___ if (!$softonly);
523 l %r0,240($key)
524 lhi %r1,16
525 clr %r0,%r1
526 jl .Ldsoft
527
528 la %r1,0($key)
529 #la %r2,0($inp)
530 la %r4,0($out)
531 lghi %r3,16 # single block length
532 .long 0xb92e0042 # km %r4,%r2
533 brc 1,.-4 # can this happen?
534 br %r14
535.align 64
536.Ldsoft:
537___
538$code.=<<___;
539 stmg %r3,$ra,24($sp)
540
541 llgf $s0,0($inp)
542 llgf $s1,4($inp)
543 llgf $s2,8($inp)
544 llgf $s3,12($inp)
545
546 larl $tbl,AES_Td
547 bras $ra,_s390x_AES_decrypt
548
549 lg $out,24($sp)
550 st $s0,0($out)
551 st $s1,4($out)
552 st $s2,8($out)
553 st $s3,12($out)
554
555 lmg %r6,$ra,48($sp)
556 br $ra
557.size AES_decrypt,.-AES_decrypt
558
559.type _s390x_AES_decrypt,\@function
560.align 16
561_s390x_AES_decrypt:
562 stg $ra,152($sp)
563 x $s0,0($key)
564 x $s1,4($key)
565 x $s2,8($key)
566 x $s3,12($key)
567 l $rounds,240($key)
568 llill $mask,`0xff<<3`
569 aghi $rounds,-1
570 j .Ldec_loop
571.align 16
572.Ldec_loop:
573 srlg $t1,$s0,`16-3`
574 srlg $t2,$s0,`8-3`
575 sllg $t3,$s0,`0+3`
576 srl $s0,`24-3`
577 nr $s0,$mask
578 nr $t1,$mask
579 nr $t2,$mask
580 ngr $t3,$mask
581
582 sllg $i1,$s1,`0+3` # i0
583 srlg $i2,$s1,`16-3`
584 srlg $i3,$s1,`8-3`
585 srl $s1,`24-3`
586 ngr $i1,$mask
587 nr $s1,$mask
588 nr $i2,$mask
589 nr $i3,$mask
590
591 l $s0,0($s0,$tbl) # Td0[s0>>24]
592 l $t1,3($t1,$tbl) # Td1[s0>>16]
593 l $t2,2($t2,$tbl) # Td2[s0>>8]
594 l $t3,1($t3,$tbl) # Td3[s0>>0]
595
596 x $s0,1($i1,$tbl) # Td3[s1>>0]
597 l $s1,0($s1,$tbl) # Td0[s1>>24]
598 x $t2,3($i2,$tbl) # Td1[s1>>16]
599 x $t3,2($i3,$tbl) # Td2[s1>>8]
600
601 srlg $i1,$s2,`8-3` # i0
602 sllg $i2,$s2,`0+3` # i1
603 srlg $i3,$s2,`16-3`
604 srl $s2,`24-3`
605 nr $i1,$mask
606 ngr $i2,$mask
607 nr $s2,$mask
608 nr $i3,$mask
609
610 xr $s1,$t1
611 srlg $ra,$s3,`8-3` # i1
612 srlg $t1,$s3,`16-3` # i0
613 nr $ra,$mask
614 la $key,16($key)
615 nr $t1,$mask
616
617 x $s0,2($i1,$tbl) # Td2[s2>>8]
618 x $s1,1($i2,$tbl) # Td3[s2>>0]
619 l $s2,0($s2,$tbl) # Td0[s2>>24]
620 x $t3,3($i3,$tbl) # Td1[s2>>16]
621
622 sllg $i3,$s3,`0+3` # i2
623 srl $s3,`24-3`
624 ngr $i3,$mask
625 nr $s3,$mask
626
627 xr $s2,$t2
628 x $s0,0($key)
629 x $s1,4($key)
630 x $s2,8($key)
631 x $t3,12($key)
632
633 x $s0,3($t1,$tbl) # Td1[s3>>16]
634 x $s1,2($ra,$tbl) # Td2[s3>>8]
635 x $s2,1($i3,$tbl) # Td3[s3>>0]
636 l $s3,0($s3,$tbl) # Td0[s3>>24]
637 xr $s3,$t3
638
639 brct $rounds,.Ldec_loop
640 .align 16
641
642 l $t1,`2048+0`($tbl) # prefetch Td4
643 l $t2,`2048+64`($tbl)
644 l $t3,`2048+128`($tbl)
645 l $i1,`2048+192`($tbl)
646 llill $mask,0xff
647
648 srlg $i3,$s0,24 # i0
649 srlg $t1,$s0,16
650 srlg $t2,$s0,8
651 nr $s0,$mask # i3
652 nr $t1,$mask
653
654 srlg $i1,$s1,24
655 nr $t2,$mask
656 srlg $i2,$s1,16
657 srlg $ra,$s1,8
658 nr $s1,$mask # i0
659 nr $i2,$mask
660 nr $ra,$mask
661
662 llgc $i3,2048($i3,$tbl) # Td4[s0>>24]
663 llgc $t1,2048($t1,$tbl) # Td4[s0>>16]
664 llgc $t2,2048($t2,$tbl) # Td4[s0>>8]
665 sll $t1,16
666 llgc $t3,2048($s0,$tbl) # Td4[s0>>0]
667 sllg $s0,$i3,24
668 sll $t2,8
669
670 llgc $s1,2048($s1,$tbl) # Td4[s1>>0]
671 llgc $i1,2048($i1,$tbl) # Td4[s1>>24]
672 llgc $i2,2048($i2,$tbl) # Td4[s1>>16]
673 sll $i1,24
674 llgc $i3,2048($ra,$tbl) # Td4[s1>>8]
675 sll $i2,16
676 sll $i3,8
677 or $s0,$s1
678 or $t1,$i1
679 or $t2,$i2
680 or $t3,$i3
681
682 srlg $i1,$s2,8 # i0
683 srlg $i2,$s2,24
684 srlg $i3,$s2,16
685 nr $s2,$mask # i1
686 nr $i1,$mask
687 nr $i3,$mask
688 llgc $i1,2048($i1,$tbl) # Td4[s2>>8]
689 llgc $s1,2048($s2,$tbl) # Td4[s2>>0]
690 llgc $i2,2048($i2,$tbl) # Td4[s2>>24]
691 llgc $i3,2048($i3,$tbl) # Td4[s2>>16]
692 sll $i1,8
693 sll $i2,24
694 or $s0,$i1
695 sll $i3,16
696 or $t2,$i2
697 or $t3,$i3
698
699 srlg $i1,$s3,16 # i0
700 srlg $i2,$s3,8 # i1
701 srlg $i3,$s3,24
702 nr $s3,$mask # i2
703 nr $i1,$mask
704 nr $i2,$mask
705
706 lg $ra,152($sp)
707 or $s1,$t1
708 l $t0,16($key)
709 l $t1,20($key)
710
711 llgc $i1,2048($i1,$tbl) # Td4[s3>>16]
712 llgc $i2,2048($i2,$tbl) # Td4[s3>>8]
713 sll $i1,16
714 llgc $s2,2048($s3,$tbl) # Td4[s3>>0]
715 llgc $s3,2048($i3,$tbl) # Td4[s3>>24]
716 sll $i2,8
717 sll $s3,24
718 or $s0,$i1
719 or $s1,$i2
720 or $s2,$t2
721 or $s3,$t3
722
723 xr $s0,$t0
724 xr $s1,$t1
725 x $s2,24($key)
726 x $s3,28($key)
727
728 br $ra
729.size _s390x_AES_decrypt,.-_s390x_AES_decrypt
730___
731
732$code.=<<___;
733# void AES_set_encrypt_key(const unsigned char *in, int bits,
734# AES_KEY *key) {
735.globl AES_set_encrypt_key
736.type AES_set_encrypt_key,\@function
737.align 16
738AES_set_encrypt_key:
739 lghi $t0,0
740 clgr $inp,$t0
741 je .Lminus1
742 clgr $key,$t0
743 je .Lminus1
744
745 lghi $t0,128
746 clr $bits,$t0
747 je .Lproceed
748 lghi $t0,192
749 clr $bits,$t0
750 je .Lproceed
751 lghi $t0,256
752 clr $bits,$t0
753 je .Lproceed
754 lghi %r2,-2
755 br %r14
756
757.align 16
758.Lproceed:
759___
760$code.=<<___ if (!$softonly);
761 # convert bits to km code, [128,192,256]->[18,19,20]
762 lhi %r5,-128
763 lhi %r0,18
764 ar %r5,$bits
765 srl %r5,6
766 ar %r5,%r0
767
768 larl %r1,OPENSSL_s390xcap_P
769 lg %r0,0(%r1)
770 tmhl %r0,0x4000 # check for message-security assist
771 jz .Lekey_internal
772
773 lghi %r0,0 # query capability vector
774 la %r1,16($sp)
775 .long 0xb92f0042 # kmc %r4,%r2
776
777 llihh %r1,0x8000
778 srlg %r1,%r1,0(%r5)
779 ng %r1,16($sp)
780 jz .Lekey_internal
781
782 lmg %r0,%r1,0($inp) # just copy 128 bits...
783 stmg %r0,%r1,0($key)
784 lhi %r0,192
785 cr $bits,%r0
786 jl 1f
787 lg %r1,16($inp)
788 stg %r1,16($key)
789 je 1f
790 lg %r1,24($inp)
791 stg %r1,24($key)
7921: st $bits,236($key) # save bits
793 st %r5,240($key) # save km code
794 lghi %r2,0
795 br %r14
796___
797$code.=<<___;
798.align 16
799.Lekey_internal:
800 stmg %r6,%r13,48($sp) # all non-volatile regs
801
802 larl $tbl,AES_Te+2048
803
804 llgf $s0,0($inp)
805 llgf $s1,4($inp)
806 llgf $s2,8($inp)
807 llgf $s3,12($inp)
808 st $s0,0($key)
809 st $s1,4($key)
810 st $s2,8($key)
811 st $s3,12($key)
812 lghi $t0,128
813 cr $bits,$t0
814 jne .Lnot128
815
816 llill $mask,0xff
817 lghi $t3,0 # i=0
818 lghi $rounds,10
819 st $rounds,240($key)
820
821 llgfr $t2,$s3 # temp=rk[3]
822 srlg $i1,$s3,8
823 srlg $i2,$s3,16
824 srlg $i3,$s3,24
825 nr $t2,$mask
826 nr $i1,$mask
827 nr $i2,$mask
828
829.align 16
830.L128_loop:
831 la $t2,0($t2,$tbl)
832 la $i1,0($i1,$tbl)
833 la $i2,0($i2,$tbl)
834 la $i3,0($i3,$tbl)
835 icm $t2,2,0($t2) # Te4[rk[3]>>0]<<8
836 icm $t2,4,0($i1) # Te4[rk[3]>>8]<<16
837 icm $t2,8,0($i2) # Te4[rk[3]>>16]<<24
838 icm $t2,1,0($i3) # Te4[rk[3]>>24]
839 x $t2,256($t3,$tbl) # rcon[i]
840 xr $s0,$t2 # rk[4]=rk[0]^...
841 xr $s1,$s0 # rk[5]=rk[1]^rk[4]
842 xr $s2,$s1 # rk[6]=rk[2]^rk[5]
843 xr $s3,$s2 # rk[7]=rk[3]^rk[6]
844
845 llgfr $t2,$s3 # temp=rk[3]
846 srlg $i1,$s3,8
847 srlg $i2,$s3,16
848 nr $t2,$mask
849 nr $i1,$mask
850 srlg $i3,$s3,24
851 nr $i2,$mask
852
853 st $s0,16($key)
854 st $s1,20($key)
855 st $s2,24($key)
856 st $s3,28($key)
857 la $key,16($key) # key+=4
858 la $t3,4($t3) # i++
859 brct $rounds,.L128_loop
860 lghi %r2,0
861 lmg %r6,%r13,48($sp)
862 br $ra
863
864.align 16
865.Lnot128:
866 llgf $t0,16($inp)
867 llgf $t1,20($inp)
868 st $t0,16($key)
869 st $t1,20($key)
870 lghi $t0,192
871 cr $bits,$t0
872 jne .Lnot192
873
874 llill $mask,0xff
875 lghi $t3,0 # i=0
876 lghi $rounds,12
877 st $rounds,240($key)
878 lghi $rounds,8
879
880 srlg $i1,$t1,8
881 srlg $i2,$t1,16
882 srlg $i3,$t1,24
883 nr $t1,$mask
884 nr $i1,$mask
885 nr $i2,$mask
886
887.align 16
888.L192_loop:
889 la $t1,0($t1,$tbl)
890 la $i1,0($i1,$tbl)
891 la $i2,0($i2,$tbl)
892 la $i3,0($i3,$tbl)
893 icm $t1,2,0($t1) # Te4[rk[5]>>0]<<8
894 icm $t1,4,0($i1) # Te4[rk[5]>>8]<<16
895 icm $t1,8,0($i2) # Te4[rk[5]>>16]<<24
896 icm $t1,1,0($i3) # Te4[rk[5]>>24]
897 x $t1,256($t3,$tbl) # rcon[i]
898 xr $s0,$t1 # rk[6]=rk[0]^...
899 xr $s1,$s0 # rk[7]=rk[1]^rk[6]
900 xr $s2,$s1 # rk[8]=rk[2]^rk[7]
901 xr $s3,$s2 # rk[9]=rk[3]^rk[8]
902
903 st $s0,24($key)
904 st $s1,28($key)
905 st $s2,32($key)
906 st $s3,36($key)
907 brct $rounds,.L192_continue
908 lghi %r2,0
909 lmg %r6,%r13,48($sp)
910 br $ra
911
912.align 16
913.L192_continue:
914 lgr $t1,$s3
915 x $t1,16($key) # rk[10]=rk[4]^rk[9]
916 st $t1,40($key)
917 x $t1,20($key) # rk[11]=rk[5]^rk[10]
918 st $t1,44($key)
919
920 srlg $i1,$t1,8
921 srlg $i2,$t1,16
922 srlg $i3,$t1,24
923 nr $t1,$mask
924 nr $i1,$mask
925 nr $i2,$mask
926
927 la $key,24($key) # key+=6
928 la $t3,4($t3) # i++
929 j .L192_loop
930
931.align 16
932.Lnot192:
933 llgf $t0,24($inp)
934 llgf $t1,28($inp)
935 st $t0,24($key)
936 st $t1,28($key)
937 llill $mask,0xff
938 lghi $t3,0 # i=0
939 lghi $rounds,14
940 st $rounds,240($key)
941 lghi $rounds,7
942
943 srlg $i1,$t1,8
944 srlg $i2,$t1,16
945 srlg $i3,$t1,24
946 nr $t1,$mask
947 nr $i1,$mask
948 nr $i2,$mask
949
950.align 16
951.L256_loop:
952 la $t1,0($t1,$tbl)
953 la $i1,0($i1,$tbl)
954 la $i2,0($i2,$tbl)
955 la $i3,0($i3,$tbl)
956 icm $t1,2,0($t1) # Te4[rk[7]>>0]<<8
957 icm $t1,4,0($i1) # Te4[rk[7]>>8]<<16
958 icm $t1,8,0($i2) # Te4[rk[7]>>16]<<24
959 icm $t1,1,0($i3) # Te4[rk[7]>>24]
960 x $t1,256($t3,$tbl) # rcon[i]
961 xr $s0,$t1 # rk[8]=rk[0]^...
962 xr $s1,$s0 # rk[9]=rk[1]^rk[8]
963 xr $s2,$s1 # rk[10]=rk[2]^rk[9]
964 xr $s3,$s2 # rk[11]=rk[3]^rk[10]
965 st $s0,32($key)
966 st $s1,36($key)
967 st $s2,40($key)
968 st $s3,44($key)
969 brct $rounds,.L256_continue
970 lghi %r2,0
971 lmg %r6,%r13,48($sp)
972 br $ra
973
974.align 16
975.L256_continue:
976 lgr $t1,$s3 # temp=rk[11]
977 srlg $i1,$s3,8
978 srlg $i2,$s3,16
979 srlg $i3,$s3,24
980 nr $t1,$mask
981 nr $i1,$mask
982 nr $i2,$mask
983 la $t1,0($t1,$tbl)
984 la $i1,0($i1,$tbl)
985 la $i2,0($i2,$tbl)
986 la $i3,0($i3,$tbl)
987 llgc $t1,0($t1) # Te4[rk[11]>>0]
988 icm $t1,2,0($i1) # Te4[rk[11]>>8]<<8
989 icm $t1,4,0($i2) # Te4[rk[11]>>16]<<16
990 icm $t1,8,0($i3) # Te4[rk[11]>>24]<<24
991 x $t1,16($key) # rk[12]=rk[4]^...
992 st $t1,48($key)
993 x $t1,20($key) # rk[13]=rk[5]^rk[12]
994 st $t1,52($key)
995 x $t1,24($key) # rk[14]=rk[6]^rk[13]
996 st $t1,56($key)
997 x $t1,28($key) # rk[15]=rk[7]^rk[14]
998 st $t1,60($key)
999
1000 srlg $i1,$t1,8
1001 srlg $i2,$t1,16
1002 srlg $i3,$t1,24
1003 nr $t1,$mask
1004 nr $i1,$mask
1005 nr $i2,$mask
1006
1007 la $key,32($key) # key+=8
1008 la $t3,4($t3) # i++
1009 j .L256_loop
1010
1011.Lminus1:
1012 lghi %r2,-1
1013 br $ra
1014.size AES_set_encrypt_key,.-AES_set_encrypt_key
1015
1016# void AES_set_decrypt_key(const unsigned char *in, int bits,
1017# AES_KEY *key) {
1018.globl AES_set_decrypt_key
1019.type AES_set_decrypt_key,\@function
1020.align 16
1021AES_set_decrypt_key:
1022 stg $key,32($sp) # I rely on AES_set_encrypt_key to
1023 stg $ra,112($sp) # save non-volatile registers!
1024 bras $ra,AES_set_encrypt_key
1025 lg $key,32($sp)
1026 lg $ra,112($sp)
1027 ltgr %r2,%r2
1028 bnzr $ra
1029___
1030$code.=<<___ if (!$softonly);
1031 l $t0,240($key)
1032 lhi $t1,16
1033 cr $t0,$t1
1034 jl .Lgo
1035 oill $t0,0x80 # set "decrypt" bit
1036 st $t0,240($key)
1037 br $ra
1038
1039.align 16
1040.Ldkey_internal:
1041 stg $key,32($sp)
1042 stg $ra,40($sp)
1043 bras $ra,.Lekey_internal
1044 lg $key,32($sp)
1045 lg $ra,40($sp)
1046___
1047$code.=<<___;
1048
1049.Lgo: llgf $rounds,240($key)
1050 la $i1,0($key)
1051 sllg $i2,$rounds,4
1052 la $i2,0($i2,$key)
1053 srl $rounds,1
1054 lghi $t1,-16
1055
1056.align 16
1057.Linv: lmg $s0,$s1,0($i1)
1058 lmg $s2,$s3,0($i2)
1059 stmg $s0,$s1,0($i2)
1060 stmg $s2,$s3,0($i1)
1061 la $i1,16($i1)
1062 la $i2,0($t1,$i2)
1063 brct $rounds,.Linv
1064___
1065$mask80=$i1;
1066$mask1b=$i2;
1067$maskfe=$i3;
1068$code.=<<___;
1069 llgf $rounds,240($key)
1070 aghi $rounds,-1
1071 sll $rounds,2 # (rounds-1)*4
1072 llilh $mask80,0x8080
1073 llilh $mask1b,0x1b1b
1074 llilh $maskfe,0xfefe
1075 oill $mask80,0x8080
1076 oill $mask1b,0x1b1b
1077 oill $maskfe,0xfefe
1078
1079.align 16
1080.Lmix: l $s0,16($key) # tp1
1081 lr $s1,$s0
1082 ngr $s1,$mask80
1083 srlg $t1,$s1,7
1084 slr $s1,$t1
1085 nr $s1,$mask1b
1086 sllg $t1,$s0,1
1087 nr $t1,$maskfe
1088 xr $s1,$t1 # tp2
1089
1090 lr $s2,$s1
1091 ngr $s2,$mask80
1092 srlg $t1,$s2,7
1093 slr $s2,$t1
1094 nr $s2,$mask1b
1095 sllg $t1,$s1,1
1096 nr $t1,$maskfe
1097 xr $s2,$t1 # tp4
1098
1099 lr $s3,$s2
1100 ngr $s3,$mask80
1101 srlg $t1,$s3,7
1102 slr $s3,$t1
1103 nr $s3,$mask1b
1104 sllg $t1,$s2,1
1105 nr $t1,$maskfe
1106 xr $s3,$t1 # tp8
1107
1108 xr $s1,$s0 # tp2^tp1
1109 xr $s2,$s0 # tp4^tp1
1110 rll $s0,$s0,24 # = ROTATE(tp1,8)
1111 xr $s2,$s3 # ^=tp8
1112 xr $s0,$s1 # ^=tp2^tp1
1113 xr $s1,$s3 # tp2^tp1^tp8
1114 xr $s0,$s2 # ^=tp4^tp1^tp8
1115 rll $s1,$s1,8
1116 rll $s2,$s2,16
1117 xr $s0,$s1 # ^= ROTATE(tp8^tp2^tp1,24)
1118 rll $s3,$s3,24
1119 xr $s0,$s2 # ^= ROTATE(tp8^tp4^tp1,16)
1120 xr $s0,$s3 # ^= ROTATE(tp8,8)
1121
1122 st $s0,16($key)
1123 la $key,4($key)
1124 brct $rounds,.Lmix
1125
1126 lmg %r6,%r13,48($sp)# as was saved by AES_set_encrypt_key!
1127 lghi %r2,0
1128 br $ra
1129.size AES_set_decrypt_key,.-AES_set_decrypt_key
1130___
1131
1132#void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
1133# size_t length, const AES_KEY *key,
1134# unsigned char *ivec, const int enc)
1135{
1136my $inp="%r2";
1137my $out="%r4"; # length and out are swapped
1138my $len="%r3";
1139my $key="%r5";
1140my $ivp="%r6";
1141
1142$code.=<<___;
1143.globl AES_cbc_encrypt
1144.type AES_cbc_encrypt,\@function
1145.align 16
1146AES_cbc_encrypt:
1147 xgr %r3,%r4 # flip %r3 and %r4, out and len
1148 xgr %r4,%r3
1149 xgr %r3,%r4
1150___
1151$code.=<<___ if (!$softonly);
1152 lhi %r0,16
1153 cl %r0,240($key)
1154 jh .Lcbc_software
1155
1156 lg %r0,0($ivp) # copy ivec
1157 lg %r1,8($ivp)
1158 stmg %r0,%r1,16($sp)
1159 lmg %r0,%r1,0($key) # copy key, cover 256 bit
1160 stmg %r0,%r1,32($sp)
1161 lmg %r0,%r1,16($key)
1162 stmg %r0,%r1,48($sp)
1163 l %r0,240($key) # load kmc code
1164 lghi $key,15 # res=len%16, len-=res;
1165 ngr $key,$len
1166 slgr $len,$key
1167 la %r1,16($sp) # parameter block - ivec || key
1168 jz .Lkmc_truncated
1169 .long 0xb92f0042 # kmc %r4,%r2
1170 brc 1,.-4 # pay attention to "partial completion"
1171 ltr $key,$key
1172 jnz .Lkmc_truncated
1173.Lkmc_done:
1174 lmg %r0,%r1,16($sp) # copy ivec to caller
1175 stg %r0,0($ivp)
1176 stg %r1,8($ivp)
1177 br $ra
1178.align 16
1179.Lkmc_truncated:
1180 ahi $key,-1 # it's the way it's encoded in mvc
1181 tmll %r0,0x80
1182 jnz .Lkmc_truncated_dec
1183 lghi %r1,0
1184 stg %r1,128($sp)
1185 stg %r1,136($sp)
1186 bras %r1,1f
1187 mvc 128(1,$sp),0($inp)
11881: ex $key,0(%r1)
1189 la %r1,16($sp) # restore parameter block
1190 la $inp,128($sp)
1191 lghi $len,16
1192 .long 0xb92f0042 # kmc %r4,%r2
1193 j .Lkmc_done
1194.align 16
1195.Lkmc_truncated_dec:
1196 stg $out,64($sp)
1197 la $out,128($sp)
1198 lghi $len,16
1199 .long 0xb92f0042 # kmc %r4,%r2
1200 lg $out,64($sp)
1201 bras %r1,2f
1202 mvc 0(1,$out),128($sp)
12032: ex $key,0(%r1)
1204 j .Lkmc_done
1205.align 16
1206.Lcbc_software:
1207___
1208$code.=<<___;
1209 stmg $key,$ra,40($sp)
1210 lhi %r0,0
1211 cl %r0,164($sp)
1212 je .Lcbc_decrypt
1213
1214 larl $tbl,AES_Te
1215
1216 llgf $s0,0($ivp)
1217 llgf $s1,4($ivp)
1218 llgf $s2,8($ivp)
1219 llgf $s3,12($ivp)
1220
1221 lghi $t0,16
1222 slgr $len,$t0
1223 brc 4,.Lcbc_enc_tail # if borrow
1224.Lcbc_enc_loop:
1225 stmg $inp,$out,16($sp)
1226 x $s0,0($inp)
1227 x $s1,4($inp)
1228 x $s2,8($inp)
1229 x $s3,12($inp)
1230 lgr %r4,$key
1231
1232 bras $ra,_s390x_AES_encrypt
1233
1234 lmg $inp,$key,16($sp)
1235 st $s0,0($out)
1236 st $s1,4($out)
1237 st $s2,8($out)
1238 st $s3,12($out)
1239
1240 la $inp,16($inp)
1241 la $out,16($out)
1242 lghi $t0,16
1243 ltgr $len,$len
1244 jz .Lcbc_enc_done
1245 slgr $len,$t0
1246 brc 4,.Lcbc_enc_tail # if borrow
1247 j .Lcbc_enc_loop
1248.align 16
1249.Lcbc_enc_done:
1250 lg $ivp,48($sp)
1251 st $s0,0($ivp)
1252 st $s1,4($ivp)
1253 st $s2,8($ivp)
1254 st $s3,12($ivp)
1255
1256 lmg %r7,$ra,56($sp)
1257 br $ra
1258
1259.align 16
1260.Lcbc_enc_tail:
1261 aghi $len,15
1262 lghi $t0,0
1263 stg $t0,128($sp)
1264 stg $t0,136($sp)
1265 bras $t1,3f
1266 mvc 128(1,$sp),0($inp)
12673: ex $len,0($t1)
1268 lghi $len,0
1269 la $inp,128($sp)
1270 j .Lcbc_enc_loop
1271
1272.align 16
1273.Lcbc_decrypt:
1274 larl $tbl,AES_Td
1275
1276 lg $t0,0($ivp)
1277 lg $t1,8($ivp)
1278 stmg $t0,$t1,128($sp)
1279
1280.Lcbc_dec_loop:
1281 stmg $inp,$out,16($sp)
1282 llgf $s0,0($inp)
1283 llgf $s1,4($inp)
1284 llgf $s2,8($inp)
1285 llgf $s3,12($inp)
1286 lgr %r4,$key
1287
1288 bras $ra,_s390x_AES_decrypt
1289
1290 lmg $inp,$key,16($sp)
1291 sllg $s0,$s0,32
1292 sllg $s2,$s2,32
1293 lr $s0,$s1
1294 lr $s2,$s3
1295
1296 lg $t0,0($inp)
1297 lg $t1,8($inp)
1298 xg $s0,128($sp)
1299 xg $s2,136($sp)
1300 lghi $s1,16
1301 slgr $len,$s1
1302 brc 4,.Lcbc_dec_tail # if borrow
1303 brc 2,.Lcbc_dec_done # if zero
1304 stg $s0,0($out)
1305 stg $s2,8($out)
1306 stmg $t0,$t1,128($sp)
1307
1308 la $inp,16($inp)
1309 la $out,16($out)
1310 j .Lcbc_dec_loop
1311
1312.Lcbc_dec_done:
1313 stg $s0,0($out)
1314 stg $s2,8($out)
1315.Lcbc_dec_exit:
1316 lmg $ivp,$ra,48($sp)
1317 stmg $t0,$t1,0($ivp)
1318
1319 br $ra
1320
1321.align 16
1322.Lcbc_dec_tail:
1323 aghi $len,15
1324 stg $s0,128($sp)
1325 stg $s2,136($sp)
1326 bras $s1,4f
1327 mvc 0(1,$out),128($sp)
13284: ex $len,0($s1)
1329 j .Lcbc_dec_exit
1330.size AES_cbc_encrypt,.-AES_cbc_encrypt
1331.comm OPENSSL_s390xcap_P,8,8
1332___
1333}
1334$code.=<<___;
1335.string "AES for s390x, CRYPTOGAMS by <appro\@openssl.org>"
1336___
1337
1338$code =~ s/\`([^\`]*)\`/eval $1/gem;
1339print $code;
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-08-05 02:19:13 +0000