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 # ====================================================================
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].
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.
31 # Implement AES_set_[en|de]crypt_key. Key schedule setup is avoided
32 # for 128-bit keys, if hardware support is detected.
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.
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 keys longer than 128 bits.
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.
55 # Add AES_ctr32_encrypt. If hardware-assisted, it provides up to 4.3x
56 # performance improvement over "generic" counter mode routine relying
57 # on single-block, also hardware-assisted, AES_encrypt. "Up to" refers
58 # to the fact that exact throughput value depends on current stack
59 # frame alignment within 4KB page. In worst case you get ~75% of the
60 # maximum, but *on average* it would be as much as ~98%. Meaning that
61 # worst case is unlike, it's like hitting ravine on plateau.
65 # Adapt for -m31 build. If kernel supports what's called "highgprs"
66 # feature on Linux [see /proc/cpuinfo], it's possible to use 64-bit
67 # instructions and achieve "64-bit" performance even in 31-bit legacy
68 # application context. The feature is not specific to any particular
69 # processor, as long as it's "z-CPU". Latter implies that the code
70 # remains z/Architecture specific. On z990 it was measured to perform
71 # 2x better than code generated by gcc 4.3.
75 # Add support for z196 "cipher message with counter" instruction.
76 # Note however that it's disengaged, because it was measured to
77 # perform ~12% worse than vanilla km-based code...
81 # Add AES_xts_[en|de]crypt. This includes support for z196 km-xts-aes
82 # instructions, which deliver ~70% improvement at 8KB block size over
83 # vanilla km-based code, 37% - at most like 512-bytes block size.
87 if ($flavour =~ /3[12]/) {
95 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
96 open STDOUT,">$output";
98 $softonly=0; # allow hardware support
100 $t0="%r0"; $mask="%r0";
102 $t2="%r2"; $inp="%r2";
103 $t3="%r3"; $out="%r3"; $bits="%r3";
117 $stdframe=16*$SIZE_T+4*8;
121 while(defined($i=shift)) { $code.=sprintf".long\t0x%08x,0x%08x\n",$i,$i; }
127 .type AES_Te,\@object
132 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d,
133 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554,
134 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d,
135 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a,
136 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87,
137 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b,
138 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea,
139 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b,
140 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a,
141 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f,
142 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108,
143 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f,
144 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e,
145 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5,
146 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d,
147 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f,
148 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e,
149 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb,
150 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce,
151 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497,
152 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c,
153 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed,
154 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b,
155 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a,
156 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16,
157 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594,
158 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81,
159 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3,
160 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a,
161 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504,
162 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163,
163 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d,
164 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f,
165 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739,
166 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47,
167 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395,
168 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f,
169 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883,
170 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c,
171 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76,
172 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e,
173 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4,
174 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6,
175 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b,
176 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7,
177 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0,
178 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25,
179 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818,
180 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72,
181 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651,
182 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21,
183 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85,
184 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa,
185 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12,
186 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0,
187 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9,
188 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133,
189 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7,
190 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920,
191 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a,
192 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17,
193 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8,
194 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11,
195 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a);
198 .byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
199 .byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
200 .byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
201 .byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
202 .byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
203 .byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
204 .byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
205 .byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
206 .byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
207 .byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
208 .byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
209 .byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
210 .byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
211 .byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
212 .byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
213 .byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
214 .byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
215 .byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
216 .byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
217 .byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
218 .byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
219 .byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
220 .byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
221 .byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
222 .byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
223 .byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
224 .byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
225 .byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
226 .byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
227 .byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
228 .byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
229 .byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
231 .long 0x01000000, 0x02000000, 0x04000000, 0x08000000
232 .long 0x10000000, 0x20000000, 0x40000000, 0x80000000
233 .long 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
235 .size AES_Te,.-AES_Te
237 # void AES_encrypt(const unsigned char *inp, unsigned char *out,
238 # const AES_KEY *key) {
240 .type AES_encrypt,\@function
243 $code.=<<___ if (!$softonly);
252 lghi %r3,16 # single block length
253 .long 0xb92e0042 # km %r4,%r2
254 brc 1,.-4 # can this happen?
260 stm${g} %r3,$ra,3*$SIZE_T($sp)
268 bras $ra,_s390x_AES_encrypt
270 l${g} $out,3*$SIZE_T($sp)
276 lm${g} %r6,$ra,6*$SIZE_T($sp)
278 .size AES_encrypt,.-AES_encrypt
280 .type _s390x_AES_encrypt,\@function
283 st${g} $ra,15*$SIZE_T($sp)
289 llill $mask,`0xff<<3`
303 srlg $i1,$s1,`16-3` # i0
312 l $s0,0($s0,$tbl) # Te0[s0>>24]
313 l $t1,1($t1,$tbl) # Te3[s0>>0]
314 l $t2,2($t2,$tbl) # Te2[s0>>8]
315 l $t3,3($t3,$tbl) # Te1[s0>>16]
317 x $s0,3($i1,$tbl) # Te1[s1>>16]
318 l $s1,0($s1,$tbl) # Te0[s1>>24]
319 x $t2,1($i2,$tbl) # Te3[s1>>0]
320 x $t3,2($i3,$tbl) # Te2[s1>>8]
322 srlg $i1,$s2,`8-3` # i0
323 srlg $i2,$s2,`16-3` # i1
332 srlg $ra,$s3,`8-3` # i1
333 sllg $t1,$s3,`0+3` # i0
338 x $s0,2($i1,$tbl) # Te2[s2>>8]
339 x $s1,3($i2,$tbl) # Te1[s2>>16]
340 l $s2,0($s2,$tbl) # Te0[s2>>24]
341 x $t3,1($i3,$tbl) # Te3[s2>>0]
343 srlg $i3,$s3,`16-3` # i2
354 x $s0,1($t1,$tbl) # Te3[s3>>0]
355 x $s1,2($ra,$tbl) # Te2[s3>>8]
356 x $s2,3($i3,$tbl) # Te1[s3>>16]
357 l $s3,0($s3,$tbl) # Te0[s3>>24]
360 brct $rounds,.Lenc_loop
372 srlg $i1,$s1,`16-3` # i0
381 llgc $s0,2($s0,$tbl) # Te4[s0>>24]
382 llgc $t1,2($t1,$tbl) # Te4[s0>>0]
384 llgc $t2,2($t2,$tbl) # Te4[s0>>8]
385 llgc $t3,2($t3,$tbl) # Te4[s0>>16]
389 llgc $i1,2($i1,$tbl) # Te4[s1>>16]
390 llgc $s1,2($s1,$tbl) # Te4[s1>>24]
391 llgc $i2,2($i2,$tbl) # Te4[s1>>0]
392 llgc $i3,2($i3,$tbl) # Te4[s1>>8]
401 srlg $i1,$s2,`8-3` # i0
402 srlg $i2,$s2,`16-3` # i1
410 sllg $t1,$s3,`0+3` # i0
411 srlg $ra,$s3,`8-3` # i1
414 llgc $i1,2($i1,$tbl) # Te4[s2>>8]
415 llgc $i2,2($i2,$tbl) # Te4[s2>>16]
417 llgc $s2,2($s2,$tbl) # Te4[s2>>24]
418 llgc $i3,2($i3,$tbl) # Te4[s2>>0]
427 srlg $i3,$s3,`16-3` # i2
435 llgc $i1,2($t1,$tbl) # Te4[s3>>0]
436 llgc $i2,2($ra,$tbl) # Te4[s3>>8]
437 llgc $i3,2($i3,$tbl) # Te4[s3>>16]
438 llgc $s3,2($s3,$tbl) # Te4[s3>>24]
447 l${g} $ra,15*$SIZE_T($sp)
454 .size _s390x_AES_encrypt,.-_s390x_AES_encrypt
458 .type AES_Td,\@object
463 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96,
464 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393,
465 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25,
466 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f,
467 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1,
468 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6,
469 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da,
470 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844,
471 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd,
472 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4,
473 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45,
474 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94,
475 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7,
476 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a,
477 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5,
478 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c,
479 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1,
480 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a,
481 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75,
482 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051,
483 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46,
484 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff,
485 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77,
486 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb,
487 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000,
488 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e,
489 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927,
490 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a,
491 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e,
492 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16,
493 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d,
494 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8,
495 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd,
496 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34,
497 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163,
498 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120,
499 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d,
500 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0,
501 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422,
502 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef,
503 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36,
504 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4,
505 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662,
506 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5,
507 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3,
508 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b,
509 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8,
510 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6,
511 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6,
512 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0,
513 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815,
514 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f,
515 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df,
516 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f,
517 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e,
518 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713,
519 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89,
520 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c,
521 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf,
522 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86,
523 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f,
524 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541,
525 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190,
526 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742);
529 .byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
530 .byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
531 .byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
532 .byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
533 .byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
534 .byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
535 .byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
536 .byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
537 .byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
538 .byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
539 .byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
540 .byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
541 .byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
542 .byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
543 .byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
544 .byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
545 .byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
546 .byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
547 .byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
548 .byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
549 .byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
550 .byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
551 .byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
552 .byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
553 .byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
554 .byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
555 .byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
556 .byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
557 .byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
558 .byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
559 .byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
560 .byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
561 .size AES_Td,.-AES_Td
563 # void AES_decrypt(const unsigned char *inp, unsigned char *out,
564 # const AES_KEY *key) {
566 .type AES_decrypt,\@function
569 $code.=<<___ if (!$softonly);
578 lghi %r3,16 # single block length
579 .long 0xb92e0042 # km %r4,%r2
580 brc 1,.-4 # can this happen?
586 stm${g} %r3,$ra,3*$SIZE_T($sp)
594 bras $ra,_s390x_AES_decrypt
596 l${g} $out,3*$SIZE_T($sp)
602 lm${g} %r6,$ra,6*$SIZE_T($sp)
604 .size AES_decrypt,.-AES_decrypt
606 .type _s390x_AES_decrypt,\@function
609 st${g} $ra,15*$SIZE_T($sp)
615 llill $mask,`0xff<<3`
629 sllg $i1,$s1,`0+3` # i0
638 l $s0,0($s0,$tbl) # Td0[s0>>24]
639 l $t1,3($t1,$tbl) # Td1[s0>>16]
640 l $t2,2($t2,$tbl) # Td2[s0>>8]
641 l $t3,1($t3,$tbl) # Td3[s0>>0]
643 x $s0,1($i1,$tbl) # Td3[s1>>0]
644 l $s1,0($s1,$tbl) # Td0[s1>>24]
645 x $t2,3($i2,$tbl) # Td1[s1>>16]
646 x $t3,2($i3,$tbl) # Td2[s1>>8]
648 srlg $i1,$s2,`8-3` # i0
649 sllg $i2,$s2,`0+3` # i1
658 srlg $ra,$s3,`8-3` # i1
659 srlg $t1,$s3,`16-3` # i0
664 x $s0,2($i1,$tbl) # Td2[s2>>8]
665 x $s1,1($i2,$tbl) # Td3[s2>>0]
666 l $s2,0($s2,$tbl) # Td0[s2>>24]
667 x $t3,3($i3,$tbl) # Td1[s2>>16]
669 sllg $i3,$s3,`0+3` # i2
680 x $s0,3($t1,$tbl) # Td1[s3>>16]
681 x $s1,2($ra,$tbl) # Td2[s3>>8]
682 x $s2,1($i3,$tbl) # Td3[s3>>0]
683 l $s3,0($s3,$tbl) # Td0[s3>>24]
686 brct $rounds,.Ldec_loop
689 l $t1,`2048+0`($tbl) # prefetch Td4
690 l $t2,`2048+64`($tbl)
691 l $t3,`2048+128`($tbl)
692 l $i1,`2048+192`($tbl)
709 llgc $i3,2048($i3,$tbl) # Td4[s0>>24]
710 llgc $t1,2048($t1,$tbl) # Td4[s0>>16]
711 llgc $t2,2048($t2,$tbl) # Td4[s0>>8]
713 llgc $t3,2048($s0,$tbl) # Td4[s0>>0]
717 llgc $s1,2048($s1,$tbl) # Td4[s1>>0]
718 llgc $i1,2048($i1,$tbl) # Td4[s1>>24]
719 llgc $i2,2048($i2,$tbl) # Td4[s1>>16]
721 llgc $i3,2048($ra,$tbl) # Td4[s1>>8]
735 llgc $i1,2048($i1,$tbl) # Td4[s2>>8]
736 llgc $s1,2048($s2,$tbl) # Td4[s2>>0]
737 llgc $i2,2048($i2,$tbl) # Td4[s2>>24]
738 llgc $i3,2048($i3,$tbl) # Td4[s2>>16]
753 l${g} $ra,15*$SIZE_T($sp)
758 llgc $i1,2048($i1,$tbl) # Td4[s3>>16]
759 llgc $i2,2048($i2,$tbl) # Td4[s3>>8]
761 llgc $s2,2048($s3,$tbl) # Td4[s3>>0]
762 llgc $s3,2048($i3,$tbl) # Td4[s3>>24]
776 .size _s390x_AES_decrypt,.-_s390x_AES_decrypt
780 # void AES_set_encrypt_key(const unsigned char *in, int bits,
782 .globl private_AES_set_encrypt_key
783 .type private_AES_set_encrypt_key,\@function
785 private_AES_set_encrypt_key:
786 _s390x_AES_set_encrypt_key:
808 $code.=<<___ if (!$softonly);
809 # convert bits to km code, [128,192,256]->[18,19,20]
816 larl %r1,OPENSSL_s390xcap_P
818 tmhl %r0,0x4000 # check for message-security assist
823 ng %r0,48(%r1) # check kmc capability vector
826 lmg %r0,%r1,0($inp) # just copy 128 bits...
836 1: st $bits,236($key) # save bits [for debugging purposes]
838 st %r5,240($key) # save km code
845 stm${g} %r4,%r13,4*$SIZE_T($sp) # all non-volatile regs and $key
847 larl $tbl,AES_Te+2048
866 llgfr $t2,$s3 # temp=rk[3]
880 icm $t2,2,0($t2) # Te4[rk[3]>>0]<<8
881 icm $t2,4,0($i1) # Te4[rk[3]>>8]<<16
882 icm $t2,8,0($i2) # Te4[rk[3]>>16]<<24
883 icm $t2,1,0($i3) # Te4[rk[3]>>24]
884 x $t2,256($t3,$tbl) # rcon[i]
885 xr $s0,$t2 # rk[4]=rk[0]^...
886 xr $s1,$s0 # rk[5]=rk[1]^rk[4]
887 xr $s2,$s1 # rk[6]=rk[2]^rk[5]
888 xr $s3,$s2 # rk[7]=rk[3]^rk[6]
890 llgfr $t2,$s3 # temp=rk[3]
902 la $key,16($key) # key+=4
904 brct $rounds,.L128_loop
907 lm${g} %r4,%r13,4*$SIZE_T($sp)
939 icm $t1,2,0($t1) # Te4[rk[5]>>0]<<8
940 icm $t1,4,0($i1) # Te4[rk[5]>>8]<<16
941 icm $t1,8,0($i2) # Te4[rk[5]>>16]<<24
942 icm $t1,1,0($i3) # Te4[rk[5]>>24]
943 x $t1,256($t3,$tbl) # rcon[i]
944 xr $s0,$t1 # rk[6]=rk[0]^...
945 xr $s1,$s0 # rk[7]=rk[1]^rk[6]
946 xr $s2,$s1 # rk[8]=rk[2]^rk[7]
947 xr $s3,$s2 # rk[9]=rk[3]^rk[8]
953 brct $rounds,.L192_continue
956 lm${g} %r4,%r13,4*$SIZE_T($sp)
962 x $t1,16($key) # rk[10]=rk[4]^rk[9]
964 x $t1,20($key) # rk[11]=rk[5]^rk[10]
974 la $key,24($key) # key+=6
1003 icm $t1,2,0($t1) # Te4[rk[7]>>0]<<8
1004 icm $t1,4,0($i1) # Te4[rk[7]>>8]<<16
1005 icm $t1,8,0($i2) # Te4[rk[7]>>16]<<24
1006 icm $t1,1,0($i3) # Te4[rk[7]>>24]
1007 x $t1,256($t3,$tbl) # rcon[i]
1008 xr $s0,$t1 # rk[8]=rk[0]^...
1009 xr $s1,$s0 # rk[9]=rk[1]^rk[8]
1010 xr $s2,$s1 # rk[10]=rk[2]^rk[9]
1011 xr $s3,$s2 # rk[11]=rk[3]^rk[10]
1016 brct $rounds,.L256_continue
1019 lm${g} %r4,%r13,4*$SIZE_T($sp)
1024 lgr $t1,$s3 # temp=rk[11]
1035 llgc $t1,0($t1) # Te4[rk[11]>>0]
1036 icm $t1,2,0($i1) # Te4[rk[11]>>8]<<8
1037 icm $t1,4,0($i2) # Te4[rk[11]>>16]<<16
1038 icm $t1,8,0($i3) # Te4[rk[11]>>24]<<24
1039 x $t1,16($key) # rk[12]=rk[4]^...
1041 x $t1,20($key) # rk[13]=rk[5]^rk[12]
1043 x $t1,24($key) # rk[14]=rk[6]^rk[13]
1045 x $t1,28($key) # rk[15]=rk[7]^rk[14]
1055 la $key,32($key) # key+=8
1062 .size private_AES_set_encrypt_key,.-private_AES_set_encrypt_key
1064 # void AES_set_decrypt_key(const unsigned char *in, int bits,
1066 .globl private_AES_set_decrypt_key
1067 .type private_AES_set_decrypt_key,\@function
1069 private_AES_set_decrypt_key:
1070 #st${g} $key,4*$SIZE_T($sp) # I rely on AES_set_encrypt_key to
1071 st${g} $ra,14*$SIZE_T($sp) # save non-volatile registers and $key!
1072 bras $ra,_s390x_AES_set_encrypt_key
1073 #l${g} $key,4*$SIZE_T($sp)
1074 l${g} $ra,14*$SIZE_T($sp)
1078 $code.=<<___ if (!$softonly);
1083 oill $t0,0x80 # set "decrypt" bit
1089 .Lgo: lgr $rounds,$t0 #llgf $rounds,240($key)
1097 .Linv: lmg $s0,$s1,0($i1)
1109 llgf $rounds,240($key)
1111 sll $rounds,2 # (rounds-1)*4
1112 llilh $mask80,0x8080
1113 llilh $mask1b,0x1b1b
1114 llilh $maskfe,0xfefe
1120 .Lmix: l $s0,16($key) # tp1
1148 xr $s1,$s0 # tp2^tp1
1149 xr $s2,$s0 # tp4^tp1
1150 rll $s0,$s0,24 # = ROTATE(tp1,8)
1152 xr $s0,$s1 # ^=tp2^tp1
1153 xr $s1,$s3 # tp2^tp1^tp8
1154 xr $s0,$s2 # ^=tp4^tp1^tp8
1157 xr $s0,$s1 # ^= ROTATE(tp8^tp2^tp1,24)
1159 xr $s0,$s2 # ^= ROTATE(tp8^tp4^tp1,16)
1160 xr $s0,$s3 # ^= ROTATE(tp8,8)
1166 lm${g} %r6,%r13,6*$SIZE_T($sp)# as was saved by AES_set_encrypt_key!
1169 .size private_AES_set_decrypt_key,.-private_AES_set_decrypt_key
1172 ########################################################################
1173 # void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
1174 # size_t length, const AES_KEY *key,
1175 # unsigned char *ivec, const int enc)
1178 my $out="%r4"; # length and out are swapped
1184 .globl AES_cbc_encrypt
1185 .type AES_cbc_encrypt,\@function
1188 xgr %r3,%r4 # flip %r3 and %r4, out and len
1192 $code.=<<___ if (!$softonly);
1197 lg %r0,0($ivp) # copy ivec
1199 stmg %r0,%r1,16($sp)
1200 lmg %r0,%r1,0($key) # copy key, cover 256 bit
1201 stmg %r0,%r1,32($sp)
1202 lmg %r0,%r1,16($key)
1203 stmg %r0,%r1,48($sp)
1204 l %r0,240($key) # load kmc code
1205 lghi $key,15 # res=len%16, len-=res;
1208 la %r1,16($sp) # parameter block - ivec || key
1210 .long 0xb92f0042 # kmc %r4,%r2
1211 brc 1,.-4 # pay attention to "partial completion"
1215 lmg %r0,%r1,16($sp) # copy ivec to caller
1221 ahi $key,-1 # it's the way it's encoded in mvc
1223 jnz .Lkmc_truncated_dec
1225 stg %r1,16*$SIZE_T($sp)
1226 stg %r1,16*$SIZE_T+8($sp)
1228 mvc 16*$SIZE_T(1,$sp),0($inp)
1230 la %r1,16($sp) # restore parameter block
1231 la $inp,16*$SIZE_T($sp)
1233 .long 0xb92f0042 # kmc %r4,%r2
1236 .Lkmc_truncated_dec:
1237 st${g} $out,4*$SIZE_T($sp)
1238 la $out,16*$SIZE_T($sp)
1240 .long 0xb92f0042 # kmc %r4,%r2
1241 l${g} $out,4*$SIZE_T($sp)
1243 mvc 0(1,$out),16*$SIZE_T($sp)
1250 stm${g} $key,$ra,5*$SIZE_T($sp)
1252 cl %r0,`$stdframe+$SIZE_T-4`($sp)
1264 brc 4,.Lcbc_enc_tail # if borrow
1266 stm${g} $inp,$out,2*$SIZE_T($sp)
1273 bras $ra,_s390x_AES_encrypt
1275 lm${g} $inp,$key,2*$SIZE_T($sp)
1287 brc 4,.Lcbc_enc_tail # if borrow
1291 l${g} $ivp,6*$SIZE_T($sp)
1297 lm${g} %r7,$ra,7*$SIZE_T($sp)
1304 stg $t0,16*$SIZE_T($sp)
1305 stg $t0,16*$SIZE_T+8($sp)
1307 mvc 16*$SIZE_T(1,$sp),0($inp)
1310 la $inp,16*$SIZE_T($sp)
1319 stmg $t0,$t1,16*$SIZE_T($sp)
1322 stm${g} $inp,$out,2*$SIZE_T($sp)
1329 bras $ra,_s390x_AES_decrypt
1331 lm${g} $inp,$key,2*$SIZE_T($sp)
1339 xg $s0,16*$SIZE_T($sp)
1340 xg $s2,16*$SIZE_T+8($sp)
1343 brc 4,.Lcbc_dec_tail # if borrow
1344 brc 2,.Lcbc_dec_done # if zero
1347 stmg $t0,$t1,16*$SIZE_T($sp)
1357 lm${g} %r6,$ra,6*$SIZE_T($sp)
1358 stmg $t0,$t1,0($ivp)
1365 stg $s0,16*$SIZE_T($sp)
1366 stg $s2,16*$SIZE_T+8($sp)
1368 mvc 0(1,$out),16*$SIZE_T($sp)
1371 .size AES_cbc_encrypt,.-AES_cbc_encrypt
1374 ########################################################################
1375 # void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
1376 # size_t blocks, const AES_KEY *key,
1377 # const unsigned char *ivec)
1380 my $out="%r4"; # blocks and out are swapped
1382 my $key="%r5"; my $iv0="%r5";
1387 .globl AES_ctr32_encrypt
1388 .type AES_ctr32_encrypt,\@function
1391 xgr %r3,%r4 # flip %r3 and %r4, $out and $len
1394 llgfr $len,$len # safe in ctr32 subroutine even in 64-bit case
1396 $code.=<<___ if (!$softonly);
1402 stm${g} %r6,$s3,6*$SIZE_T($sp)
1405 la %r1,0($key) # %r1 is permanent copy of $key
1406 lg $iv0,0($ivp) # load ivec
1409 # prepare and allocate stack frame at the top of 4K page
1410 # with 1K reserved for eventual signal handling
1411 lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer
1415 ngr $s0,$s1 # align at page boundary
1416 slgr $fp,$s0 # total buffer size
1418 lghi $s1,1024+16 # sl[g]fi is extended-immediate facility
1419 slgr $fp,$s1 # deduct reservation to get usable buffer size
1420 # buffer size is at lest 256 and at most 3072+256-16
1422 la $sp,1024($s0) # alloca
1423 srlg $fp,$fp,4 # convert bytes to blocks, minimum 16
1424 st${g} $s2,0($sp) # back-chain
1425 st${g} $fp,$SIZE_T($sp)
1428 brc 1,.Lctr32_hw_switch # not zero, no borrow
1429 algr $fp,$len # input is shorter than allocated buffer
1431 st${g} $fp,$SIZE_T($sp)
1435 $code.=<<___ if (0); ######### kmctr code was measured to be ~12% slower
1436 larl $s0,OPENSSL_s390xcap_P
1438 tmhh $s0,0x0004 # check for message_security-assist-4
1443 larl %r1,OPENSSL_s390xcap_P
1444 llihh %r0,0x8000 # check if kmctr supports the function code
1446 ng %r0,64(%r1) # check kmctr capability vector
1452 algr $out,$inp # restore $out
1453 lgr $s1,$len # $s1 undertakes $len
1454 j .Lctr32_kmctr_loop
1459 .Lctr32_kmctr_prepare:
1463 ahi $ivp,1 # 32-bit increment, preserves upper half
1464 brct $s3,.Lctr32_kmctr_prepare
1466 #la $inp,0($inp) # inp
1467 sllg $len,$fp,4 # len
1468 #la $out,0($out) # out
1470 .long 0xb92da042 # kmctr $out,$s2,$inp
1471 brc 1,.-4 # pay attention to "partial completion"
1474 brc 1,.Lctr32_kmctr_loop # not zero, no borrow
1477 brc 4+1,.Lctr32_kmctr_loop # not zero
1480 lm${g} %r6,$s3,6*$SIZE_T($sp)
1492 ahi $ivp,1 # 32-bit increment, preserves upper half
1493 brct $s3,.Lctr32_km_prepare
1495 la $s0,16($sp) # inp
1496 sllg $s1,$fp,4 # len
1497 la $s2,16($sp) # out
1498 .long 0xb92e00a8 # km %r10,%r8
1499 brc 1,.-4 # pay attention to "partial completion"
1509 stg $s0,0($out,$inp)
1510 stg $s1,8($out,$inp)
1512 brct $s3,.Lctr32_km_xor
1515 brc 1,.Lctr32_km_loop # not zero, no borrow
1518 brc 4+1,.Lctr32_km_loop # not zero
1521 l${g} $s1,$SIZE_T($sp)
1527 brct $s1,.Lctr32_km_zap
1530 lm${g} %r6,$s3,6*$SIZE_T($sp)
1536 stm${g} $key,$ra,5*$SIZE_T($sp)
1542 stm${g} $inp,$out,2*$SIZE_T($sp)
1547 st $t1,16*$SIZE_T($sp)
1550 bras $ra,_s390x_AES_encrypt
1552 lm${g} $inp,$ivp,2*$SIZE_T($sp)
1553 llgf $t1,16*$SIZE_T($sp)
1561 ahi $t1,1 # 32-bit increment
1562 brct $len,.Lctr32_loop
1564 lm${g} %r6,$ra,6*$SIZE_T($sp)
1566 .size AES_ctr32_encrypt,.-AES_ctr32_encrypt
1570 ########################################################################
1571 # void AES_xts_encrypt(const char *inp,char *out,size_t len,
1572 # const AES_KEY *key1, const AES_KEY *key2,
1573 # const unsigned char iv[16]);
1577 my $out="%r4"; # len and out are swapped
1579 my $key1="%r5"; # $i1
1580 my $key2="%r6"; # $i2
1582 my $tweak=16*$SIZE_T+16; # or $stdframe-16, bottom of the frame...
1585 .type _s390x_xts_km,\@function
1590 llgfr $s0,%r0 # put aside the function code
1593 larl %r1,OPENSSL_s390xcap_P
1595 srlg %r0,%r0,32($s1) # check for 32+function code
1596 ng %r0,32(%r1) # check km capability vector
1597 lgr %r0,$s0 # restore the function code
1598 la %r1,0($key1) # restore $key1
1601 lmg $i2,$i3,$tweak($sp) # put aside the tweak value
1604 oill %r0,32 # switch to xts function code
1606 sllg $s1,$s1,3 # (function code - 18)*8, 0 or 16
1607 la %r1,$tweak-16($sp)
1608 slgr %r1,$s1 # parameter block position
1609 lmg $s0,$s3,0($key1) # load 256 bits of key material,
1610 stmg $s0,$s3,0(%r1) # and copy it to parameter block.
1611 # yes, it contains junk and overlaps
1612 # with the tweak in 128-bit case.
1613 # it's done to avoid conditional
1615 stmg $i2,$i3,$tweak($sp) # "re-seat" the tweak value
1617 .long 0xb92e0042 # km %r4,%r2
1618 brc 1,.-4 # pay attention to "partial completion"
1620 lrvg $s0,$tweak+0($sp) # load the last tweak
1621 lrvg $s1,$tweak+8($sp)
1622 stmg %r0,%r3,$tweak-32($sp) # wipe copy of the key
1624 nill %r0,0xffdf # switch back to original function code
1625 la %r1,0($key1) # restore pointer to $key1
1628 llgc $len,2*$SIZE_T-1($sp)
1629 nill $len,0x0f # $len%=16
1636 # prepare and allocate stack frame at the top of 4K page
1637 # with 1K reserved for eventual signal handling
1638 lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer
1642 ngr $s0,$s1 # align at page boundary
1643 slgr $fp,$s0 # total buffer size
1645 lghi $s1,1024+16 # sl[g]fi is extended-immediate facility
1646 slgr $fp,$s1 # deduct reservation to get usable buffer size
1647 # buffer size is at lest 256 and at most 3072+256-16
1649 la $sp,1024($s0) # alloca
1650 nill $fp,0xfff0 # round to 16*n
1651 st${g} $s2,0($sp) # back-chain
1652 nill $len,0xfff0 # redundant
1653 st${g} $fp,$SIZE_T($sp)
1656 brc 1,.Lxts_km_go # not zero, no borrow
1657 algr $fp,$len # input is shorter than allocated buffer
1659 st${g} $fp,$SIZE_T($sp)
1662 lrvg $s0,$tweak+0($s2) # load the tweak value in little-endian
1663 lrvg $s1,$tweak+8($s2)
1665 la $s2,16($sp) # vector of ascending tweak values
1676 srag $i2,$s1,63 # broadcast upper bit
1682 lrvgr $i1,$s0 # flip byte order
1688 stg $i1,0($out,$inp)
1689 stg $i2,8($out,$inp)
1691 brct $s3,.Lxts_km_prepare
1693 slgr $inp,$fp # rewind $inp
1696 .long 0xb92e00aa # km $s2,$s2
1697 brc 1,.-4 # pay attention to "partial completion"
1707 stg $i1,0($out,$inp)
1708 stg $i2,8($out,$inp)
1710 brct $s3,.Lxts_km_xor
1713 brc 1,.Lxts_km_loop # not zero, no borrow
1716 brc 4+1,.Lxts_km_loop # not zero
1718 l${g} $i1,0($sp) # back-chain
1719 llgf $fp,`2*$SIZE_T-4`($sp) # bytes used
1726 brct $fp,.Lxts_km_zap
1729 llgc $len,2*$SIZE_T-1($i1)
1730 nill $len,0x0f # $len%=16
1733 # generate one more tweak...
1735 srag $i2,$s1,63 # broadcast upper bit
1741 ltr $len,$len # clear zero flag
1743 .size _s390x_xts_km,.-_s390x_xts_km
1745 .globl AES_xts_encrypt
1746 .type AES_xts_encrypt,\@function
1749 xgr %r3,%r4 # flip %r3 and %r4, $out and $len
1753 $code.=<<___ if ($SIZE_T==4);
1757 st${g} $len,1*$SIZE_T($sp) # save copy of $len
1758 srag $len,$len,4 # formally wrong, because it expands
1759 # sign byte, but who can afford asking
1760 # to process more than 2^63-1 bytes?
1761 # I use it, because it sets condition
1763 bcr 8,$ra # abort if zero (i.e. less than 16)
1765 $code.=<<___ if (!$softonly);
1769 jl .Lxts_enc_software
1771 st${g} $ra,5*$SIZE_T($sp)
1772 stm${g} %r6,$s3,6*$SIZE_T($sp)
1774 sllg $len,$len,4 # $len&=~15
1777 # generate the tweak value
1778 l${g} $s3,$stdframe($sp) # pointer to iv
1783 la %r1,0($key2) # $key2 is not needed anymore
1784 .long 0xb92e00aa # km $s2,$s2, generate the tweak
1785 brc 1,.-4 # can this happen?
1788 la %r1,0($key1) # $key1 is not needed anymore
1789 bras $ra,_s390x_xts_km
1790 jz .Lxts_enc_km_done
1792 aghi $inp,-16 # take one step back
1793 la $i3,0($out,$inp) # put aside real $out
1796 llgc $i2,0($out,$inp)
1797 stc $i1,0($out,$inp)
1798 stc $i2,16($out,$inp)
1800 brct $len,.Lxts_enc_km_steal
1804 lrvgr $i1,$s0 # flip byte order
1810 .long 0xb92e00aa # km $s2,$s2
1811 brc 1,.-4 # can this happen?
1812 lrvgr $i1,$s0 # flip byte order
1820 stg $sp,$tweak+0($sp) # wipe tweak
1821 stg $sp,$tweak+8($sp)
1822 l${g} $ra,5*$SIZE_T($sp)
1823 lm${g} %r6,$s3,6*$SIZE_T($sp)
1829 stm${g} %r6,$ra,6*$SIZE_T($sp)
1833 l${g} $s3,$stdframe($sp) # ivp
1834 llgf $s0,0($s3) # load iv
1838 stm${g} %r2,%r5,2*$SIZE_T($sp)
1841 bras $ra,_s390x_AES_encrypt # generate the tweak
1842 lm${g} %r2,%r5,2*$SIZE_T($sp)
1843 stm $s0,$s3,$tweak($sp) # save the tweak
1848 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
1849 lrvg $s3,$tweak+8($sp)
1851 srag %r0,$s3,63 # broadcast upper bit
1856 lrvgr $s1,$s1 # flip byte order
1858 srlg $s0,$s1,32 # smash the tweak to 4x32-bits
1859 stg $s1,$tweak+0($sp) # save the tweak
1862 stg $s3,$tweak+8($sp)
1864 la $inp,16($inp) # $inp+=16
1866 x $s0,0($inp) # ^=*($inp)
1870 stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing
1872 bras $ra,_s390x_AES_encrypt
1873 lm${g} %r2,%r5,2*$SIZE_T($sp)
1874 x $s0,$tweak+0($sp) # ^=tweak
1877 x $s3,$tweak+12($sp)
1881 st $s3,12($out,$inp)
1882 brct${g} $len,.Lxts_enc_loop
1884 llgc $len,`2*$SIZE_T-1`($sp)
1885 nill $len,0x0f # $len%16
1888 la $i3,0($inp,$out) # put aside real $out
1891 llgc %r1,0($out,$inp)
1892 stc %r0,0($out,$inp)
1893 stc %r1,16($out,$inp)
1895 brct $len,.Lxts_enc_steal
1896 la $out,0($i3) # restore real $out
1898 # generate last tweak...
1899 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
1900 lrvg $s3,$tweak+8($sp)
1902 srag %r0,$s3,63 # broadcast upper bit
1907 lrvgr $s1,$s1 # flip byte order
1909 srlg $s0,$s1,32 # smash the tweak to 4x32-bits
1910 stg $s1,$tweak+0($sp) # save the tweak
1913 stg $s3,$tweak+8($sp)
1916 x $s0,0($out) # ^=*(inp)|stolen cipther-text
1920 st${g} $out,4*$SIZE_T($sp)
1922 bras $ra,_s390x_AES_encrypt
1923 l${g} $out,4*$SIZE_T($sp)
1924 x $s0,`$tweak+0`($sp) # ^=tweak
1925 x $s1,`$tweak+4`($sp)
1926 x $s2,`$tweak+8`($sp)
1927 x $s3,`$tweak+12`($sp)
1934 stg $sp,$tweak+0($sp) # wipe tweak
1935 stg $sp,$twesk+8($sp)
1936 lm${g} %r6,$ra,6*$SIZE_T($sp)
1938 .size AES_xts_encrypt,.-AES_xts_encrypt
1940 # void AES_xts_decrypt(const char *inp,char *out,size_t len,
1941 # const AES_KEY *key1, const AES_KEY *key2,
1942 # const unsigned char iv[16]);
1945 .globl AES_xts_decrypt
1946 .type AES_xts_decrypt,\@function
1949 xgr %r3,%r4 # flip %r3 and %r4, $out and $len
1953 $code.=<<___ if ($SIZE_T==4);
1957 st${g} $len,1*$SIZE_T($sp) # save copy of $len
1959 bcr 4,$ra # abort if less than zero. formally
1960 # wrong, because $len is unsigned,
1961 # but who can afford asking to
1962 # process more than 2^63-1 bytes?
1964 jnz .Lxts_dec_proceed
1968 $code.=<<___ if (!$softonly);
1972 jl .Lxts_dec_software
1974 st${g} $ra,5*$SIZE_T($sp)
1975 stm${g} %r6,$s3,6*$SIZE_T($sp)
1977 nill $len,0xfff0 # $len&=~15
1980 # generate the tweak value
1981 l${g} $s3,$stdframe($sp) # pointer to iv
1986 la %r1,0($key2) # $key2 is not needed past this point
1987 .long 0xb92e00aa # km $s2,$s2, generate the tweak
1988 brc 1,.-4 # can this happen?
1991 la %r1,0($key1) # $key1 is not needed anymore
1994 jz .Lxts_dec_km_short
1995 bras $ra,_s390x_xts_km
1996 jz .Lxts_dec_km_done
1998 lrvgr $s2,$s0 # make copy in reverse byte order
2000 j .Lxts_dec_km_2ndtweak
2003 llgc $len,`2*$SIZE_T-1`($sp)
2004 nill $len,0x0f # $len%=16
2005 lrvg $s0,$tweak+0($sp) # load the tweak
2006 lrvg $s1,$tweak+8($sp)
2007 lrvgr $s2,$s0 # make copy in reverse byte order
2010 .Lxts_dec_km_2ndtweak:
2012 srag $i2,$s1,63 # broadcast upper bit
2017 lrvgr $i1,$s0 # flip byte order
2022 stg $i1,0($out,$inp)
2023 stg $i2,8($out,$inp)
2026 .long 0xb92e0066 # km $i2,$i2
2027 brc 1,.-4 # can this happen?
2032 stg $i1,0($out,$inp)
2033 stg $i2,8($out,$inp)
2035 la $i3,0($out,$inp) # put aside real $out
2038 llgc $i2,0($out,$inp)
2039 stc $i1,0($out,$inp)
2040 stc $i2,16($out,$inp)
2042 brct $len,.Lxts_dec_km_steal
2052 .long 0xb92e0088 # km $s0,$s0
2053 brc 1,.-4 # can this happen?
2059 stg $sp,$tweak+0($sp) # wipe tweak
2060 stg $sp,$tweak+8($sp)
2061 l${g} $ra,5*$SIZE_T($sp)
2062 lm${g} %r6,$s3,6*$SIZE_T($sp)
2068 stm${g} %r6,$ra,6*$SIZE_T($sp)
2073 l${g} $s3,$stdframe($sp) # ivp
2074 llgf $s0,0($s3) # load iv
2078 stm${g} %r2,%r5,2*$SIZE_T($sp)
2081 bras $ra,_s390x_AES_encrypt # generate the tweak
2082 lm${g} %r2,%r5,2*$SIZE_T($sp)
2085 stm $s0,$s3,$tweak($sp) # save the tweak
2091 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
2092 lrvg $s3,$tweak+8($sp)
2094 srag %r0,$s3,63 # broadcast upper bit
2099 lrvgr $s1,$s1 # flip byte order
2101 srlg $s0,$s1,32 # smash the tweak to 4x32-bits
2102 stg $s1,$tweak+0($sp) # save the tweak
2105 stg $s3,$tweak+8($sp)
2108 x $s0,0($inp) # tweak^=*(inp)
2112 stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing
2114 bras $ra,_s390x_AES_decrypt
2115 lm${g} %r2,%r5,2*$SIZE_T($sp)
2116 x $s0,$tweak+0($sp) # ^=tweak
2119 x $s3,$tweak+12($sp)
2123 st $s3,12($out,$inp)
2125 brct${g} $len,.Lxts_dec_loop
2127 llgc $len,`2*$SIZE_T-1`($sp)
2128 nill $len,0x0f # $len%16
2131 # generate pair of tweaks...
2132 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
2133 lrvg $s3,$tweak+8($sp)
2135 srag %r0,$s3,63 # broadcast upper bit
2140 lrvgr $i2,$s1 # flip byte order
2142 stmg $i2,$i3,$tweak($sp) # save the 1st tweak
2143 j .Lxts_dec_2ndtweak
2147 llgc $len,`2*$SIZE_T-1`($sp)
2148 nill $len,0x0f # $len%16
2149 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
2150 lrvg $s3,$tweak+8($sp)
2153 srag %r0,$s3,63 # broadcast upper bit
2158 lrvgr $s1,$s1 # flip byte order
2160 srlg $s0,$s1,32 # smash the tweak to 4x32-bits
2161 stg $s1,$tweak-16+0($sp) # save the 2nd tweak
2164 stg $s3,$tweak-16+8($sp)
2167 x $s0,0($inp) # tweak_the_2nd^=*(inp)
2171 stm${g} %r2,%r3,2*$SIZE_T($sp)
2173 bras $ra,_s390x_AES_decrypt
2174 lm${g} %r2,%r5,2*$SIZE_T($sp)
2175 x $s0,$tweak-16+0($sp) # ^=tweak_the_2nd
2176 x $s1,$tweak-16+4($sp)
2177 x $s2,$tweak-16+8($sp)
2178 x $s3,$tweak-16+12($sp)
2182 st $s3,12($out,$inp)
2184 la $i3,0($out,$inp) # put aside real $out
2187 llgc %r1,0($out,$inp)
2188 stc %r0,0($out,$inp)
2189 stc %r1,16($out,$inp)
2191 brct $len,.Lxts_dec_steal
2192 la $out,0($i3) # restore real $out
2194 lm $s0,$s3,$tweak($sp) # load the 1st tweak
2195 x $s0,0($out) # tweak^=*(inp)|stolen cipher-text
2199 st${g} $out,4*$SIZE_T($sp)
2201 bras $ra,_s390x_AES_decrypt
2202 l${g} $out,4*$SIZE_T($sp)
2203 x $s0,$tweak+0($sp) # ^=tweak
2206 x $s3,$tweak+12($sp)
2211 stg $sp,$tweak-16+0($sp) # wipe 2nd tweak
2212 stg $sp,$tweak-16+8($sp)
2214 stg $sp,$tweak+0($sp) # wipe tweak
2215 stg $sp,$twesk+8($sp)
2216 lm${g} %r6,$ra,6*$SIZE_T($sp)
2218 .size AES_xts_decrypt,.-AES_xts_decrypt
2222 .string "AES for s390x, CRYPTOGAMS by <appro\@openssl.org>"
2223 .comm OPENSSL_s390xcap_P,80,8
2226 $code =~ s/\`([^\`]*)\`/eval $1/gem;
2228 close STDOUT; # force flush