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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 keys 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 # May 2010. | |
| 54 # | |
| 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. | |
| 62 | |
| 63 # November 2010. | |
| 64 # | |
| 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. | |
| 72 | |
| 73 # December 2010. | |
| 74 # | |
| 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... | |
| 78 | |
| 79 # February 2011. | |
| 80 # | |
| 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. | |
| 84 | |
| 85 $flavour = shift; | |
| 86 | |
| 87 if ($flavour =~ /3[12]/) { | |
| 88 $SIZE_T=4; | |
| 89 $g=""; | |
| 90 } else { | |
| 91 $SIZE_T=8; | |
| 92 $g="g"; | |
| 93 } | |
| 94 | |
| 95 while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} | |
| 96 open STDOUT,">$output"; | |
| 97 | |
| 98 $softonly=0; # allow hardware support | |
| 99 | |
| 100 $t0="%r0"; $mask="%r0"; | |
| 101 $t1="%r1"; | |
| 102 $t2="%r2"; $inp="%r2"; | |
| 103 $t3="%r3"; $out="%r3"; $bits="%r3"; | |
| 104 $key="%r4"; | |
| 105 $i1="%r5"; | |
| 106 $i2="%r6"; | |
| 107 $i3="%r7"; | |
| 108 $s0="%r8"; | |
| 109 $s1="%r9"; | |
| 110 $s2="%r10"; | |
| 111 $s3="%r11"; | |
| 112 $tbl="%r12"; | |
| 113 $rounds="%r13"; | |
| 114 $ra="%r14"; | |
| 115 $sp="%r15"; | |
| 116 | |
| 117 $stdframe=16*$SIZE_T+4*8; | |
| 118 | |
| 119 sub _data_word() | |
| 120 { my $i; | |
| 121 while(defined($i=shift)) { $code.=sprintf".long\t0x%08x,0x%08x\n",$i,$i; } | |
| 122 } | |
| 123 | |
| 124 $code=<<___; | |
| 125 .text | |
| 126 | |
| 127 .type AES_Te,\@object | |
| 128 .align 256 | |
| 129 AES_Te: | |
| 130 ___ | |
| 131 &_data_word( | |
| 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); | |
| 196 $code.=<<___; | |
| 197 # Te4[256] | |
| 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 | |
| 230 # rcon[] | |
| 231 .long 0x01000000, 0x02000000, 0x04000000, 0x08000000 | |
| 232 .long 0x10000000, 0x20000000, 0x40000000, 0x80000000 | |
| 233 .long 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0 | |
| 234 .align 256 | |
| 235 .size AES_Te,.-AES_Te | |
| 236 | |
| 237 # void AES_encrypt(const unsigned char *inp, unsigned char *out, | |
| 238 # const AES_KEY *key) { | |
| 239 .globl AES_encrypt | |
| 240 .type AES_encrypt,\@function | |
| 241 AES_encrypt: | |
| 242 ___ | |
| 243 $code.=<<___ if (!$softonly); | |
| 244 l %r0,240($key) | |
| 245 lhi %r1,16 | |
| 246 clr %r0,%r1 | |
| 247 jl .Lesoft | |
| 248 | |
| 249 la %r1,0($key) | |
| 250 #la %r2,0($inp) | |
| 251 la %r4,0($out) | |
| 252 lghi %r3,16 # single block length | |
| 253 .long 0xb92e0042 # km %r4,%r2 | |
| 254 brc 1,.-4 # can this happen? | |
| 255 br %r14 | |
| 256 .align 64 | |
| 257 .Lesoft: | |
| 258 ___ | |
| 259 $code.=<<___; | |
| 260 stm${g} %r3,$ra,3*$SIZE_T($sp) | |
| 261 | |
| 262 llgf $s0,0($inp) | |
| 263 llgf $s1,4($inp) | |
| 264 llgf $s2,8($inp) | |
| 265 llgf $s3,12($inp) | |
| 266 | |
| 267 larl $tbl,AES_Te | |
| 268 bras $ra,_s390x_AES_encrypt | |
| 269 | |
| 270 l${g} $out,3*$SIZE_T($sp) | |
| 271 st $s0,0($out) | |
| 272 st $s1,4($out) | |
| 273 st $s2,8($out) | |
| 274 st $s3,12($out) | |
| 275 | |
| 276 lm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 277 br $ra | |
| 278 .size AES_encrypt,.-AES_encrypt | |
| 279 | |
| 280 .type _s390x_AES_encrypt,\@function | |
| 281 .align 16 | |
| 282 _s390x_AES_encrypt: | |
| 283 st${g} $ra,15*$SIZE_T($sp) | |
| 284 x $s0,0($key) | |
| 285 x $s1,4($key) | |
| 286 x $s2,8($key) | |
| 287 x $s3,12($key) | |
| 288 l $rounds,240($key) | |
| 289 llill $mask,`0xff<<3` | |
| 290 aghi $rounds,-1 | |
| 291 j .Lenc_loop | |
| 292 .align 16 | |
| 293 .Lenc_loop: | |
| 294 sllg $t1,$s0,`0+3` | |
| 295 srlg $t2,$s0,`8-3` | |
| 296 srlg $t3,$s0,`16-3` | |
| 297 srl $s0,`24-3` | |
| 298 nr $s0,$mask | |
| 299 ngr $t1,$mask | |
| 300 nr $t2,$mask | |
| 301 nr $t3,$mask | |
| 302 | |
| 303 srlg $i1,$s1,`16-3` # i0 | |
| 304 sllg $i2,$s1,`0+3` | |
| 305 srlg $i3,$s1,`8-3` | |
| 306 srl $s1,`24-3` | |
| 307 nr $i1,$mask | |
| 308 nr $s1,$mask | |
| 309 ngr $i2,$mask | |
| 310 nr $i3,$mask | |
| 311 | |
| 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] | |
| 316 | |
| 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] | |
| 321 | |
| 322 srlg $i1,$s2,`8-3` # i0 | |
| 323 srlg $i2,$s2,`16-3` # i1 | |
| 324 nr $i1,$mask | |
| 325 nr $i2,$mask | |
| 326 sllg $i3,$s2,`0+3` | |
| 327 srl $s2,`24-3` | |
| 328 nr $s2,$mask | |
| 329 ngr $i3,$mask | |
| 330 | |
| 331 xr $s1,$t1 | |
| 332 srlg $ra,$s3,`8-3` # i1 | |
| 333 sllg $t1,$s3,`0+3` # i0 | |
| 334 nr $ra,$mask | |
| 335 la $key,16($key) | |
| 336 ngr $t1,$mask | |
| 337 | |
| 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] | |
| 342 | |
| 343 srlg $i3,$s3,`16-3` # i2 | |
| 344 xr $s2,$t2 | |
| 345 srl $s3,`24-3` | |
| 346 nr $i3,$mask | |
| 347 nr $s3,$mask | |
| 348 | |
| 349 x $s0,0($key) | |
| 350 x $s1,4($key) | |
| 351 x $s2,8($key) | |
| 352 x $t3,12($key) | |
| 353 | |
| 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] | |
| 358 xr $s3,$t3 | |
| 359 | |
| 360 brct $rounds,.Lenc_loop | |
| 361 .align 16 | |
| 362 | |
| 363 sllg $t1,$s0,`0+3` | |
| 364 srlg $t2,$s0,`8-3` | |
| 365 ngr $t1,$mask | |
| 366 srlg $t3,$s0,`16-3` | |
| 367 srl $s0,`24-3` | |
| 368 nr $s0,$mask | |
| 369 nr $t2,$mask | |
| 370 nr $t3,$mask | |
| 371 | |
| 372 srlg $i1,$s1,`16-3` # i0 | |
| 373 sllg $i2,$s1,`0+3` | |
| 374 ngr $i2,$mask | |
| 375 srlg $i3,$s1,`8-3` | |
| 376 srl $s1,`24-3` | |
| 377 nr $i1,$mask | |
| 378 nr $s1,$mask | |
| 379 nr $i3,$mask | |
| 380 | |
| 381 llgc $s0,2($s0,$tbl) # Te4[s0>>24] | |
| 382 llgc $t1,2($t1,$tbl) # Te4[s0>>0] | |
| 383 sll $s0,24 | |
| 384 llgc $t2,2($t2,$tbl) # Te4[s0>>8] | |
| 385 llgc $t3,2($t3,$tbl) # Te4[s0>>16] | |
| 386 sll $t2,8 | |
| 387 sll $t3,16 | |
| 388 | |
| 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] | |
| 393 sll $i1,16 | |
| 394 sll $s1,24 | |
| 395 sll $i3,8 | |
| 396 or $s0,$i1 | |
| 397 or $s1,$t1 | |
| 398 or $t2,$i2 | |
| 399 or $t3,$i3 | |
| 400 | |
| 401 srlg $i1,$s2,`8-3` # i0 | |
| 402 srlg $i2,$s2,`16-3` # i1 | |
| 403 nr $i1,$mask | |
| 404 nr $i2,$mask | |
| 405 sllg $i3,$s2,`0+3` | |
| 406 srl $s2,`24-3` | |
| 407 ngr $i3,$mask | |
| 408 nr $s2,$mask | |
| 409 | |
| 410 sllg $t1,$s3,`0+3` # i0 | |
| 411 srlg $ra,$s3,`8-3` # i1 | |
| 412 ngr $t1,$mask | |
| 413 | |
| 414 llgc $i1,2($i1,$tbl) # Te4[s2>>8] | |
| 415 llgc $i2,2($i2,$tbl) # Te4[s2>>16] | |
| 416 sll $i1,8 | |
| 417 llgc $s2,2($s2,$tbl) # Te4[s2>>24] | |
| 418 llgc $i3,2($i3,$tbl) # Te4[s2>>0] | |
| 419 sll $i2,16 | |
| 420 nr $ra,$mask | |
| 421 sll $s2,24 | |
| 422 or $s0,$i1 | |
| 423 or $s1,$i2 | |
| 424 or $s2,$t2 | |
| 425 or $t3,$i3 | |
| 426 | |
| 427 srlg $i3,$s3,`16-3` # i2 | |
| 428 srl $s3,`24-3` | |
| 429 nr $i3,$mask | |
| 430 nr $s3,$mask | |
| 431 | |
| 432 l $t0,16($key) | |
| 433 l $t2,20($key) | |
| 434 | |
| 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] | |
| 439 sll $i2,8 | |
| 440 sll $i3,16 | |
| 441 sll $s3,24 | |
| 442 or $s0,$i1 | |
| 443 or $s1,$i2 | |
| 444 or $s2,$i3 | |
| 445 or $s3,$t3 | |
| 446 | |
| 447 l${g} $ra,15*$SIZE_T($sp) | |
| 448 xr $s0,$t0 | |
| 449 xr $s1,$t2 | |
| 450 x $s2,24($key) | |
| 451 x $s3,28($key) | |
| 452 | |
| 453 br $ra | |
| 454 .size _s390x_AES_encrypt,.-_s390x_AES_encrypt | |
| 455 ___ | |
| 456 | |
| 457 $code.=<<___; | |
| 458 .type AES_Td,\@object | |
| 459 .align 256 | |
| 460 AES_Td: | |
| 461 ___ | |
| 462 &_data_word( | |
| 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); | |
| 527 $code.=<<___; | |
| 528 # Td4[256] | |
| 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 | |
| 562 | |
| 563 # void AES_decrypt(const unsigned char *inp, unsigned char *out, | |
| 564 # const AES_KEY *key) { | |
| 565 .globl AES_decrypt | |
| 566 .type AES_decrypt,\@function | |
| 567 AES_decrypt: | |
| 568 ___ | |
| 569 $code.=<<___ if (!$softonly); | |
| 570 l %r0,240($key) | |
| 571 lhi %r1,16 | |
| 572 clr %r0,%r1 | |
| 573 jl .Ldsoft | |
| 574 | |
| 575 la %r1,0($key) | |
| 576 #la %r2,0($inp) | |
| 577 la %r4,0($out) | |
| 578 lghi %r3,16 # single block length | |
| 579 .long 0xb92e0042 # km %r4,%r2 | |
| 580 brc 1,.-4 # can this happen? | |
| 581 br %r14 | |
| 582 .align 64 | |
| 583 .Ldsoft: | |
| 584 ___ | |
| 585 $code.=<<___; | |
| 586 stm${g} %r3,$ra,3*$SIZE_T($sp) | |
| 587 | |
| 588 llgf $s0,0($inp) | |
| 589 llgf $s1,4($inp) | |
| 590 llgf $s2,8($inp) | |
| 591 llgf $s3,12($inp) | |
| 592 | |
| 593 larl $tbl,AES_Td | |
| 594 bras $ra,_s390x_AES_decrypt | |
| 595 | |
| 596 l${g} $out,3*$SIZE_T($sp) | |
| 597 st $s0,0($out) | |
| 598 st $s1,4($out) | |
| 599 st $s2,8($out) | |
| 600 st $s3,12($out) | |
| 601 | |
| 602 lm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 603 br $ra | |
| 604 .size AES_decrypt,.-AES_decrypt | |
| 605 | |
| 606 .type _s390x_AES_decrypt,\@function | |
| 607 .align 16 | |
| 608 _s390x_AES_decrypt: | |
| 609 st${g} $ra,15*$SIZE_T($sp) | |
| 610 x $s0,0($key) | |
| 611 x $s1,4($key) | |
| 612 x $s2,8($key) | |
| 613 x $s3,12($key) | |
| 614 l $rounds,240($key) | |
| 615 llill $mask,`0xff<<3` | |
| 616 aghi $rounds,-1 | |
| 617 j .Ldec_loop | |
| 618 .align 16 | |
| 619 .Ldec_loop: | |
| 620 srlg $t1,$s0,`16-3` | |
| 621 srlg $t2,$s0,`8-3` | |
| 622 sllg $t3,$s0,`0+3` | |
| 623 srl $s0,`24-3` | |
| 624 nr $s0,$mask | |
| 625 nr $t1,$mask | |
| 626 nr $t2,$mask | |
| 627 ngr $t3,$mask | |
| 628 | |
| 629 sllg $i1,$s1,`0+3` # i0 | |
| 630 srlg $i2,$s1,`16-3` | |
| 631 srlg $i3,$s1,`8-3` | |
| 632 srl $s1,`24-3` | |
| 633 ngr $i1,$mask | |
| 634 nr $s1,$mask | |
| 635 nr $i2,$mask | |
| 636 nr $i3,$mask | |
| 637 | |
| 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] | |
| 642 | |
| 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] | |
| 647 | |
| 648 srlg $i1,$s2,`8-3` # i0 | |
| 649 sllg $i2,$s2,`0+3` # i1 | |
| 650 srlg $i3,$s2,`16-3` | |
| 651 srl $s2,`24-3` | |
| 652 nr $i1,$mask | |
| 653 ngr $i2,$mask | |
| 654 nr $s2,$mask | |
| 655 nr $i3,$mask | |
| 656 | |
| 657 xr $s1,$t1 | |
| 658 srlg $ra,$s3,`8-3` # i1 | |
| 659 srlg $t1,$s3,`16-3` # i0 | |
| 660 nr $ra,$mask | |
| 661 la $key,16($key) | |
| 662 nr $t1,$mask | |
| 663 | |
| 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] | |
| 668 | |
| 669 sllg $i3,$s3,`0+3` # i2 | |
| 670 srl $s3,`24-3` | |
| 671 ngr $i3,$mask | |
| 672 nr $s3,$mask | |
| 673 | |
| 674 xr $s2,$t2 | |
| 675 x $s0,0($key) | |
| 676 x $s1,4($key) | |
| 677 x $s2,8($key) | |
| 678 x $t3,12($key) | |
| 679 | |
| 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] | |
| 684 xr $s3,$t3 | |
| 685 | |
| 686 brct $rounds,.Ldec_loop | |
| 687 .align 16 | |
| 688 | |
| 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) | |
| 693 llill $mask,0xff | |
| 694 | |
| 695 srlg $i3,$s0,24 # i0 | |
| 696 srlg $t1,$s0,16 | |
| 697 srlg $t2,$s0,8 | |
| 698 nr $s0,$mask # i3 | |
| 699 nr $t1,$mask | |
| 700 | |
| 701 srlg $i1,$s1,24 | |
| 702 nr $t2,$mask | |
| 703 srlg $i2,$s1,16 | |
| 704 srlg $ra,$s1,8 | |
| 705 nr $s1,$mask # i0 | |
| 706 nr $i2,$mask | |
| 707 nr $ra,$mask | |
| 708 | |
| 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] | |
| 712 sll $t1,16 | |
| 713 llgc $t3,2048($s0,$tbl) # Td4[s0>>0] | |
| 714 sllg $s0,$i3,24 | |
| 715 sll $t2,8 | |
| 716 | |
| 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] | |
| 720 sll $i1,24 | |
| 721 llgc $i3,2048($ra,$tbl) # Td4[s1>>8] | |
| 722 sll $i2,16 | |
| 723 sll $i3,8 | |
| 724 or $s0,$s1 | |
| 725 or $t1,$i1 | |
| 726 or $t2,$i2 | |
| 727 or $t3,$i3 | |
| 728 | |
| 729 srlg $i1,$s2,8 # i0 | |
| 730 srlg $i2,$s2,24 | |
| 731 srlg $i3,$s2,16 | |
| 732 nr $s2,$mask # i1 | |
| 733 nr $i1,$mask | |
| 734 nr $i3,$mask | |
| 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] | |
| 739 sll $i1,8 | |
| 740 sll $i2,24 | |
| 741 or $s0,$i1 | |
| 742 sll $i3,16 | |
| 743 or $t2,$i2 | |
| 744 or $t3,$i3 | |
| 745 | |
| 746 srlg $i1,$s3,16 # i0 | |
| 747 srlg $i2,$s3,8 # i1 | |
| 748 srlg $i3,$s3,24 | |
| 749 nr $s3,$mask # i2 | |
| 750 nr $i1,$mask | |
| 751 nr $i2,$mask | |
| 752 | |
| 753 l${g} $ra,15*$SIZE_T($sp) | |
| 754 or $s1,$t1 | |
| 755 l $t0,16($key) | |
| 756 l $t1,20($key) | |
| 757 | |
| 758 llgc $i1,2048($i1,$tbl) # Td4[s3>>16] | |
| 759 llgc $i2,2048($i2,$tbl) # Td4[s3>>8] | |
| 760 sll $i1,16 | |
| 761 llgc $s2,2048($s3,$tbl) # Td4[s3>>0] | |
| 762 llgc $s3,2048($i3,$tbl) # Td4[s3>>24] | |
| 763 sll $i2,8 | |
| 764 sll $s3,24 | |
| 765 or $s0,$i1 | |
| 766 or $s1,$i2 | |
| 767 or $s2,$t2 | |
| 768 or $s3,$t3 | |
| 769 | |
| 770 xr $s0,$t0 | |
| 771 xr $s1,$t1 | |
| 772 x $s2,24($key) | |
| 773 x $s3,28($key) | |
| 774 | |
| 775 br $ra | |
| 776 .size _s390x_AES_decrypt,.-_s390x_AES_decrypt | |
| 777 ___ | |
| 778 | |
| 779 $code.=<<___; | |
| 780 # void AES_set_encrypt_key(const unsigned char *in, int bits, | |
| 781 # AES_KEY *key) { | |
| 782 .globl private_AES_set_encrypt_key | |
| 783 .type private_AES_set_encrypt_key,\@function | |
| 784 .align 16 | |
| 785 private_AES_set_encrypt_key: | |
| 786 _s390x_AES_set_encrypt_key: | |
| 787 lghi $t0,0 | |
| 788 cl${g}r $inp,$t0 | |
| 789 je .Lminus1 | |
| 790 cl${g}r $key,$t0 | |
| 791 je .Lminus1 | |
| 792 | |
| 793 lghi $t0,128 | |
| 794 clr $bits,$t0 | |
| 795 je .Lproceed | |
| 796 lghi $t0,192 | |
| 797 clr $bits,$t0 | |
| 798 je .Lproceed | |
| 799 lghi $t0,256 | |
| 800 clr $bits,$t0 | |
| 801 je .Lproceed | |
| 802 lghi %r2,-2 | |
| 803 br %r14 | |
| 804 | |
| 805 .align 16 | |
| 806 .Lproceed: | |
| 807 ___ | |
| 808 $code.=<<___ if (!$softonly); | |
| 809 # convert bits to km code, [128,192,256]->[18,19,20] | |
| 810 lhi %r5,-128 | |
| 811 lhi %r0,18 | |
| 812 ar %r5,$bits | |
| 813 srl %r5,6 | |
| 814 ar %r5,%r0 | |
| 815 | |
| 816 larl %r1,OPENSSL_s390xcap_P | |
| 817 lg %r0,0(%r1) | |
| 818 tmhl %r0,0x4000 # check for message-security assist | |
| 819 jz .Lekey_internal | |
| 820 | |
| 821 lghi %r0,0 # query capability vector | |
| 822 la %r1,16($sp) | |
| 823 .long 0xb92f0042 # kmc %r4,%r2 | |
| 824 | |
| 825 llihh %r1,0x8000 | |
| 826 srlg %r1,%r1,0(%r5) | |
| 827 ng %r1,16($sp) | |
| 828 jz .Lekey_internal | |
| 829 | |
| 830 lmg %r0,%r1,0($inp) # just copy 128 bits... | |
| 831 stmg %r0,%r1,0($key) | |
| 832 lhi %r0,192 | |
| 833 cr $bits,%r0 | |
| 834 jl 1f | |
| 835 lg %r1,16($inp) | |
| 836 stg %r1,16($key) | |
| 837 je 1f | |
| 838 lg %r1,24($inp) | |
| 839 stg %r1,24($key) | |
| 840 1: st $bits,236($key) # save bits [for debugging purposes] | |
| 841 lgr $t0,%r5 | |
| 842 st %r5,240($key) # save km code | |
| 843 lghi %r2,0 | |
| 844 br %r14 | |
| 845 ___ | |
| 846 $code.=<<___; | |
| 847 .align 16 | |
| 848 .Lekey_internal: | |
| 849 stm${g} %r4,%r13,4*$SIZE_T($sp) # all non-volatile regs and $key | |
| 850 | |
| 851 larl $tbl,AES_Te+2048 | |
| 852 | |
| 853 llgf $s0,0($inp) | |
| 854 llgf $s1,4($inp) | |
| 855 llgf $s2,8($inp) | |
| 856 llgf $s3,12($inp) | |
| 857 st $s0,0($key) | |
| 858 st $s1,4($key) | |
| 859 st $s2,8($key) | |
| 860 st $s3,12($key) | |
| 861 lghi $t0,128 | |
| 862 cr $bits,$t0 | |
| 863 jne .Lnot128 | |
| 864 | |
| 865 llill $mask,0xff | |
| 866 lghi $t3,0 # i=0 | |
| 867 lghi $rounds,10 | |
| 868 st $rounds,240($key) | |
| 869 | |
| 870 llgfr $t2,$s3 # temp=rk[3] | |
| 871 srlg $i1,$s3,8 | |
| 872 srlg $i2,$s3,16 | |
| 873 srlg $i3,$s3,24 | |
| 874 nr $t2,$mask | |
| 875 nr $i1,$mask | |
| 876 nr $i2,$mask | |
| 877 | |
| 878 .align 16 | |
| 879 .L128_loop: | |
| 880 la $t2,0($t2,$tbl) | |
| 881 la $i1,0($i1,$tbl) | |
| 882 la $i2,0($i2,$tbl) | |
| 883 la $i3,0($i3,$tbl) | |
| 884 icm $t2,2,0($t2) # Te4[rk[3]>>0]<<8 | |
| 885 icm $t2,4,0($i1) # Te4[rk[3]>>8]<<16 | |
| 886 icm $t2,8,0($i2) # Te4[rk[3]>>16]<<24 | |
| 887 icm $t2,1,0($i3) # Te4[rk[3]>>24] | |
| 888 x $t2,256($t3,$tbl) # rcon[i] | |
| 889 xr $s0,$t2 # rk[4]=rk[0]^... | |
| 890 xr $s1,$s0 # rk[5]=rk[1]^rk[4] | |
| 891 xr $s2,$s1 # rk[6]=rk[2]^rk[5] | |
| 892 xr $s3,$s2 # rk[7]=rk[3]^rk[6] | |
| 893 | |
| 894 llgfr $t2,$s3 # temp=rk[3] | |
| 895 srlg $i1,$s3,8 | |
| 896 srlg $i2,$s3,16 | |
| 897 nr $t2,$mask | |
| 898 nr $i1,$mask | |
| 899 srlg $i3,$s3,24 | |
| 900 nr $i2,$mask | |
| 901 | |
| 902 st $s0,16($key) | |
| 903 st $s1,20($key) | |
| 904 st $s2,24($key) | |
| 905 st $s3,28($key) | |
| 906 la $key,16($key) # key+=4 | |
| 907 la $t3,4($t3) # i++ | |
| 908 brct $rounds,.L128_loop | |
| 909 lghi $t0,10 | |
| 910 lghi %r2,0 | |
| 911 lm${g} %r4,%r13,4*$SIZE_T($sp) | |
| 912 br $ra | |
| 913 | |
| 914 .align 16 | |
| 915 .Lnot128: | |
| 916 llgf $t0,16($inp) | |
| 917 llgf $t1,20($inp) | |
| 918 st $t0,16($key) | |
| 919 st $t1,20($key) | |
| 920 lghi $t0,192 | |
| 921 cr $bits,$t0 | |
| 922 jne .Lnot192 | |
| 923 | |
| 924 llill $mask,0xff | |
| 925 lghi $t3,0 # i=0 | |
| 926 lghi $rounds,12 | |
| 927 st $rounds,240($key) | |
| 928 lghi $rounds,8 | |
| 929 | |
| 930 srlg $i1,$t1,8 | |
| 931 srlg $i2,$t1,16 | |
| 932 srlg $i3,$t1,24 | |
| 933 nr $t1,$mask | |
| 934 nr $i1,$mask | |
| 935 nr $i2,$mask | |
| 936 | |
| 937 .align 16 | |
| 938 .L192_loop: | |
| 939 la $t1,0($t1,$tbl) | |
| 940 la $i1,0($i1,$tbl) | |
| 941 la $i2,0($i2,$tbl) | |
| 942 la $i3,0($i3,$tbl) | |
| 943 icm $t1,2,0($t1) # Te4[rk[5]>>0]<<8 | |
| 944 icm $t1,4,0($i1) # Te4[rk[5]>>8]<<16 | |
| 945 icm $t1,8,0($i2) # Te4[rk[5]>>16]<<24 | |
| 946 icm $t1,1,0($i3) # Te4[rk[5]>>24] | |
| 947 x $t1,256($t3,$tbl) # rcon[i] | |
| 948 xr $s0,$t1 # rk[6]=rk[0]^... | |
| 949 xr $s1,$s0 # rk[7]=rk[1]^rk[6] | |
| 950 xr $s2,$s1 # rk[8]=rk[2]^rk[7] | |
| 951 xr $s3,$s2 # rk[9]=rk[3]^rk[8] | |
| 952 | |
| 953 st $s0,24($key) | |
| 954 st $s1,28($key) | |
| 955 st $s2,32($key) | |
| 956 st $s3,36($key) | |
| 957 brct $rounds,.L192_continue | |
| 958 lghi $t0,12 | |
| 959 lghi %r2,0 | |
| 960 lm${g} %r4,%r13,4*$SIZE_T($sp) | |
| 961 br $ra | |
| 962 | |
| 963 .align 16 | |
| 964 .L192_continue: | |
| 965 lgr $t1,$s3 | |
| 966 x $t1,16($key) # rk[10]=rk[4]^rk[9] | |
| 967 st $t1,40($key) | |
| 968 x $t1,20($key) # rk[11]=rk[5]^rk[10] | |
| 969 st $t1,44($key) | |
| 970 | |
| 971 srlg $i1,$t1,8 | |
| 972 srlg $i2,$t1,16 | |
| 973 srlg $i3,$t1,24 | |
| 974 nr $t1,$mask | |
| 975 nr $i1,$mask | |
| 976 nr $i2,$mask | |
| 977 | |
| 978 la $key,24($key) # key+=6 | |
| 979 la $t3,4($t3) # i++ | |
| 980 j .L192_loop | |
| 981 | |
| 982 .align 16 | |
| 983 .Lnot192: | |
| 984 llgf $t0,24($inp) | |
| 985 llgf $t1,28($inp) | |
| 986 st $t0,24($key) | |
| 987 st $t1,28($key) | |
| 988 llill $mask,0xff | |
| 989 lghi $t3,0 # i=0 | |
| 990 lghi $rounds,14 | |
| 991 st $rounds,240($key) | |
| 992 lghi $rounds,7 | |
| 993 | |
| 994 srlg $i1,$t1,8 | |
| 995 srlg $i2,$t1,16 | |
| 996 srlg $i3,$t1,24 | |
| 997 nr $t1,$mask | |
| 998 nr $i1,$mask | |
| 999 nr $i2,$mask | |
| 1000 | |
| 1001 .align 16 | |
| 1002 .L256_loop: | |
| 1003 la $t1,0($t1,$tbl) | |
| 1004 la $i1,0($i1,$tbl) | |
| 1005 la $i2,0($i2,$tbl) | |
| 1006 la $i3,0($i3,$tbl) | |
| 1007 icm $t1,2,0($t1) # Te4[rk[7]>>0]<<8 | |
| 1008 icm $t1,4,0($i1) # Te4[rk[7]>>8]<<16 | |
| 1009 icm $t1,8,0($i2) # Te4[rk[7]>>16]<<24 | |
| 1010 icm $t1,1,0($i3) # Te4[rk[7]>>24] | |
| 1011 x $t1,256($t3,$tbl) # rcon[i] | |
| 1012 xr $s0,$t1 # rk[8]=rk[0]^... | |
| 1013 xr $s1,$s0 # rk[9]=rk[1]^rk[8] | |
| 1014 xr $s2,$s1 # rk[10]=rk[2]^rk[9] | |
| 1015 xr $s3,$s2 # rk[11]=rk[3]^rk[10] | |
| 1016 st $s0,32($key) | |
| 1017 st $s1,36($key) | |
| 1018 st $s2,40($key) | |
| 1019 st $s3,44($key) | |
| 1020 brct $rounds,.L256_continue | |
| 1021 lghi $t0,14 | |
| 1022 lghi %r2,0 | |
| 1023 lm${g} %r4,%r13,4*$SIZE_T($sp) | |
| 1024 br $ra | |
| 1025 | |
| 1026 .align 16 | |
| 1027 .L256_continue: | |
| 1028 lgr $t1,$s3 # temp=rk[11] | |
| 1029 srlg $i1,$s3,8 | |
| 1030 srlg $i2,$s3,16 | |
| 1031 srlg $i3,$s3,24 | |
| 1032 nr $t1,$mask | |
| 1033 nr $i1,$mask | |
| 1034 nr $i2,$mask | |
| 1035 la $t1,0($t1,$tbl) | |
| 1036 la $i1,0($i1,$tbl) | |
| 1037 la $i2,0($i2,$tbl) | |
| 1038 la $i3,0($i3,$tbl) | |
| 1039 llgc $t1,0($t1) # Te4[rk[11]>>0] | |
| 1040 icm $t1,2,0($i1) # Te4[rk[11]>>8]<<8 | |
| 1041 icm $t1,4,0($i2) # Te4[rk[11]>>16]<<16 | |
| 1042 icm $t1,8,0($i3) # Te4[rk[11]>>24]<<24 | |
| 1043 x $t1,16($key) # rk[12]=rk[4]^... | |
| 1044 st $t1,48($key) | |
| 1045 x $t1,20($key) # rk[13]=rk[5]^rk[12] | |
| 1046 st $t1,52($key) | |
| 1047 x $t1,24($key) # rk[14]=rk[6]^rk[13] | |
| 1048 st $t1,56($key) | |
| 1049 x $t1,28($key) # rk[15]=rk[7]^rk[14] | |
| 1050 st $t1,60($key) | |
| 1051 | |
| 1052 srlg $i1,$t1,8 | |
| 1053 srlg $i2,$t1,16 | |
| 1054 srlg $i3,$t1,24 | |
| 1055 nr $t1,$mask | |
| 1056 nr $i1,$mask | |
| 1057 nr $i2,$mask | |
| 1058 | |
| 1059 la $key,32($key) # key+=8 | |
| 1060 la $t3,4($t3) # i++ | |
| 1061 j .L256_loop | |
| 1062 | |
| 1063 .Lminus1: | |
| 1064 lghi %r2,-1 | |
| 1065 br $ra | |
| 1066 .size private_AES_set_encrypt_key,.-private_AES_set_encrypt_key | |
| 1067 | |
| 1068 # void AES_set_decrypt_key(const unsigned char *in, int bits, | |
| 1069 # AES_KEY *key) { | |
| 1070 .globl private_AES_set_decrypt_key | |
| 1071 .type private_AES_set_decrypt_key,\@function | |
| 1072 .align 16 | |
| 1073 private_AES_set_decrypt_key: | |
| 1074 #st${g} $key,4*$SIZE_T($sp) # I rely on AES_set_encrypt_key to | |
| 1075 st${g} $ra,14*$SIZE_T($sp) # save non-volatile registers and $key! | |
| 1076 bras $ra,_s390x_AES_set_encrypt_key | |
| 1077 #l${g} $key,4*$SIZE_T($sp) | |
| 1078 l${g} $ra,14*$SIZE_T($sp) | |
| 1079 ltgr %r2,%r2 | |
| 1080 bnzr $ra | |
| 1081 ___ | |
| 1082 $code.=<<___ if (!$softonly); | |
| 1083 #l $t0,240($key) | |
| 1084 lhi $t1,16 | |
| 1085 cr $t0,$t1 | |
| 1086 jl .Lgo | |
| 1087 oill $t0,0x80 # set "decrypt" bit | |
| 1088 st $t0,240($key) | |
| 1089 br $ra | |
| 1090 ___ | |
| 1091 $code.=<<___; | |
| 1092 .align 16 | |
| 1093 .Lgo: lgr $rounds,$t0 #llgf $rounds,240($key) | |
| 1094 la $i1,0($key) | |
| 1095 sllg $i2,$rounds,4 | |
| 1096 la $i2,0($i2,$key) | |
| 1097 srl $rounds,1 | |
| 1098 lghi $t1,-16 | |
| 1099 | |
| 1100 .align 16 | |
| 1101 .Linv: lmg $s0,$s1,0($i1) | |
| 1102 lmg $s2,$s3,0($i2) | |
| 1103 stmg $s0,$s1,0($i2) | |
| 1104 stmg $s2,$s3,0($i1) | |
| 1105 la $i1,16($i1) | |
| 1106 la $i2,0($t1,$i2) | |
| 1107 brct $rounds,.Linv | |
| 1108 ___ | |
| 1109 $mask80=$i1; | |
| 1110 $mask1b=$i2; | |
| 1111 $maskfe=$i3; | |
| 1112 $code.=<<___; | |
| 1113 llgf $rounds,240($key) | |
| 1114 aghi $rounds,-1 | |
| 1115 sll $rounds,2 # (rounds-1)*4 | |
| 1116 llilh $mask80,0x8080 | |
| 1117 llilh $mask1b,0x1b1b | |
| 1118 llilh $maskfe,0xfefe | |
| 1119 oill $mask80,0x8080 | |
| 1120 oill $mask1b,0x1b1b | |
| 1121 oill $maskfe,0xfefe | |
| 1122 | |
| 1123 .align 16 | |
| 1124 .Lmix: l $s0,16($key) # tp1 | |
| 1125 lr $s1,$s0 | |
| 1126 ngr $s1,$mask80 | |
| 1127 srlg $t1,$s1,7 | |
| 1128 slr $s1,$t1 | |
| 1129 nr $s1,$mask1b | |
| 1130 sllg $t1,$s0,1 | |
| 1131 nr $t1,$maskfe | |
| 1132 xr $s1,$t1 # tp2 | |
| 1133 | |
| 1134 lr $s2,$s1 | |
| 1135 ngr $s2,$mask80 | |
| 1136 srlg $t1,$s2,7 | |
| 1137 slr $s2,$t1 | |
| 1138 nr $s2,$mask1b | |
| 1139 sllg $t1,$s1,1 | |
| 1140 nr $t1,$maskfe | |
| 1141 xr $s2,$t1 # tp4 | |
| 1142 | |
| 1143 lr $s3,$s2 | |
| 1144 ngr $s3,$mask80 | |
| 1145 srlg $t1,$s3,7 | |
| 1146 slr $s3,$t1 | |
| 1147 nr $s3,$mask1b | |
| 1148 sllg $t1,$s2,1 | |
| 1149 nr $t1,$maskfe | |
| 1150 xr $s3,$t1 # tp8 | |
| 1151 | |
| 1152 xr $s1,$s0 # tp2^tp1 | |
| 1153 xr $s2,$s0 # tp4^tp1 | |
| 1154 rll $s0,$s0,24 # = ROTATE(tp1,8) | |
| 1155 xr $s2,$s3 # ^=tp8 | |
| 1156 xr $s0,$s1 # ^=tp2^tp1 | |
| 1157 xr $s1,$s3 # tp2^tp1^tp8 | |
| 1158 xr $s0,$s2 # ^=tp4^tp1^tp8 | |
| 1159 rll $s1,$s1,8 | |
| 1160 rll $s2,$s2,16 | |
| 1161 xr $s0,$s1 # ^= ROTATE(tp8^tp2^tp1,24) | |
| 1162 rll $s3,$s3,24 | |
| 1163 xr $s0,$s2 # ^= ROTATE(tp8^tp4^tp1,16) | |
| 1164 xr $s0,$s3 # ^= ROTATE(tp8,8) | |
| 1165 | |
| 1166 st $s0,16($key) | |
| 1167 la $key,4($key) | |
| 1168 brct $rounds,.Lmix | |
| 1169 | |
| 1170 lm${g} %r6,%r13,6*$SIZE_T($sp)# as was saved by AES_set_encrypt_key! | |
| 1171 lghi %r2,0 | |
| 1172 br $ra | |
| 1173 .size private_AES_set_decrypt_key,.-private_AES_set_decrypt_key | |
| 1174 ___ | |
| 1175 | |
| 1176 ######################################################################## | |
| 1177 # void AES_cbc_encrypt(const unsigned char *in, unsigned char *out, | |
| 1178 # size_t length, const AES_KEY *key, | |
| 1179 # unsigned char *ivec, const int enc) | |
| 1180 { | |
| 1181 my $inp="%r2"; | |
| 1182 my $out="%r4"; # length and out are swapped | |
| 1183 my $len="%r3"; | |
| 1184 my $key="%r5"; | |
| 1185 my $ivp="%r6"; | |
| 1186 | |
| 1187 $code.=<<___; | |
| 1188 .globl AES_cbc_encrypt | |
| 1189 .type AES_cbc_encrypt,\@function | |
| 1190 .align 16 | |
| 1191 AES_cbc_encrypt: | |
| 1192 xgr %r3,%r4 # flip %r3 and %r4, out and len | |
| 1193 xgr %r4,%r3 | |
| 1194 xgr %r3,%r4 | |
| 1195 ___ | |
| 1196 $code.=<<___ if (!$softonly); | |
| 1197 lhi %r0,16 | |
| 1198 cl %r0,240($key) | |
| 1199 jh .Lcbc_software | |
| 1200 | |
| 1201 lg %r0,0($ivp) # copy ivec | |
| 1202 lg %r1,8($ivp) | |
| 1203 stmg %r0,%r1,16($sp) | |
| 1204 lmg %r0,%r1,0($key) # copy key, cover 256 bit | |
| 1205 stmg %r0,%r1,32($sp) | |
| 1206 lmg %r0,%r1,16($key) | |
| 1207 stmg %r0,%r1,48($sp) | |
| 1208 l %r0,240($key) # load kmc code | |
| 1209 lghi $key,15 # res=len%16, len-=res; | |
| 1210 ngr $key,$len | |
| 1211 sl${g}r $len,$key | |
| 1212 la %r1,16($sp) # parameter block - ivec || key | |
| 1213 jz .Lkmc_truncated | |
| 1214 .long 0xb92f0042 # kmc %r4,%r2 | |
| 1215 brc 1,.-4 # pay attention to "partial completion" | |
| 1216 ltr $key,$key | |
| 1217 jnz .Lkmc_truncated | |
| 1218 .Lkmc_done: | |
| 1219 lmg %r0,%r1,16($sp) # copy ivec to caller | |
| 1220 stg %r0,0($ivp) | |
| 1221 stg %r1,8($ivp) | |
| 1222 br $ra | |
| 1223 .align 16 | |
| 1224 .Lkmc_truncated: | |
| 1225 ahi $key,-1 # it's the way it's encoded in mvc | |
| 1226 tmll %r0,0x80 | |
| 1227 jnz .Lkmc_truncated_dec | |
| 1228 lghi %r1,0 | |
| 1229 stg %r1,16*$SIZE_T($sp) | |
| 1230 stg %r1,16*$SIZE_T+8($sp) | |
| 1231 bras %r1,1f | |
| 1232 mvc 16*$SIZE_T(1,$sp),0($inp) | |
| 1233 1: ex $key,0(%r1) | |
| 1234 la %r1,16($sp) # restore parameter block | |
| 1235 la $inp,16*$SIZE_T($sp) | |
| 1236 lghi $len,16 | |
| 1237 .long 0xb92f0042 # kmc %r4,%r2 | |
| 1238 j .Lkmc_done | |
| 1239 .align 16 | |
| 1240 .Lkmc_truncated_dec: | |
| 1241 st${g} $out,4*$SIZE_T($sp) | |
| 1242 la $out,16*$SIZE_T($sp) | |
| 1243 lghi $len,16 | |
| 1244 .long 0xb92f0042 # kmc %r4,%r2 | |
| 1245 l${g} $out,4*$SIZE_T($sp) | |
| 1246 bras %r1,2f | |
| 1247 mvc 0(1,$out),16*$SIZE_T($sp) | |
| 1248 2: ex $key,0(%r1) | |
| 1249 j .Lkmc_done | |
| 1250 .align 16 | |
| 1251 .Lcbc_software: | |
| 1252 ___ | |
| 1253 $code.=<<___; | |
| 1254 stm${g} $key,$ra,5*$SIZE_T($sp) | |
| 1255 lhi %r0,0 | |
| 1256 cl %r0,`$stdframe+$SIZE_T-4`($sp) | |
| 1257 je .Lcbc_decrypt | |
| 1258 | |
| 1259 larl $tbl,AES_Te | |
| 1260 | |
| 1261 llgf $s0,0($ivp) | |
| 1262 llgf $s1,4($ivp) | |
| 1263 llgf $s2,8($ivp) | |
| 1264 llgf $s3,12($ivp) | |
| 1265 | |
| 1266 lghi $t0,16 | |
| 1267 sl${g}r $len,$t0 | |
| 1268 brc 4,.Lcbc_enc_tail # if borrow | |
| 1269 .Lcbc_enc_loop: | |
| 1270 stm${g} $inp,$out,2*$SIZE_T($sp) | |
| 1271 x $s0,0($inp) | |
| 1272 x $s1,4($inp) | |
| 1273 x $s2,8($inp) | |
| 1274 x $s3,12($inp) | |
| 1275 lgr %r4,$key | |
| 1276 | |
| 1277 bras $ra,_s390x_AES_encrypt | |
| 1278 | |
| 1279 lm${g} $inp,$key,2*$SIZE_T($sp) | |
| 1280 st $s0,0($out) | |
| 1281 st $s1,4($out) | |
| 1282 st $s2,8($out) | |
| 1283 st $s3,12($out) | |
| 1284 | |
| 1285 la $inp,16($inp) | |
| 1286 la $out,16($out) | |
| 1287 lghi $t0,16 | |
| 1288 lt${g}r $len,$len | |
| 1289 jz .Lcbc_enc_done | |
| 1290 sl${g}r $len,$t0 | |
| 1291 brc 4,.Lcbc_enc_tail # if borrow | |
| 1292 j .Lcbc_enc_loop | |
| 1293 .align 16 | |
| 1294 .Lcbc_enc_done: | |
| 1295 l${g} $ivp,6*$SIZE_T($sp) | |
| 1296 st $s0,0($ivp) | |
| 1297 st $s1,4($ivp) | |
| 1298 st $s2,8($ivp) | |
| 1299 st $s3,12($ivp) | |
| 1300 | |
| 1301 lm${g} %r7,$ra,7*$SIZE_T($sp) | |
| 1302 br $ra | |
| 1303 | |
| 1304 .align 16 | |
| 1305 .Lcbc_enc_tail: | |
| 1306 aghi $len,15 | |
| 1307 lghi $t0,0 | |
| 1308 stg $t0,16*$SIZE_T($sp) | |
| 1309 stg $t0,16*$SIZE_T+8($sp) | |
| 1310 bras $t1,3f | |
| 1311 mvc 16*$SIZE_T(1,$sp),0($inp) | |
| 1312 3: ex $len,0($t1) | |
| 1313 lghi $len,0 | |
| 1314 la $inp,16*$SIZE_T($sp) | |
| 1315 j .Lcbc_enc_loop | |
| 1316 | |
| 1317 .align 16 | |
| 1318 .Lcbc_decrypt: | |
| 1319 larl $tbl,AES_Td | |
| 1320 | |
| 1321 lg $t0,0($ivp) | |
| 1322 lg $t1,8($ivp) | |
| 1323 stmg $t0,$t1,16*$SIZE_T($sp) | |
| 1324 | |
| 1325 .Lcbc_dec_loop: | |
| 1326 stm${g} $inp,$out,2*$SIZE_T($sp) | |
| 1327 llgf $s0,0($inp) | |
| 1328 llgf $s1,4($inp) | |
| 1329 llgf $s2,8($inp) | |
| 1330 llgf $s3,12($inp) | |
| 1331 lgr %r4,$key | |
| 1332 | |
| 1333 bras $ra,_s390x_AES_decrypt | |
| 1334 | |
| 1335 lm${g} $inp,$key,2*$SIZE_T($sp) | |
| 1336 sllg $s0,$s0,32 | |
| 1337 sllg $s2,$s2,32 | |
| 1338 lr $s0,$s1 | |
| 1339 lr $s2,$s3 | |
| 1340 | |
| 1341 lg $t0,0($inp) | |
| 1342 lg $t1,8($inp) | |
| 1343 xg $s0,16*$SIZE_T($sp) | |
| 1344 xg $s2,16*$SIZE_T+8($sp) | |
| 1345 lghi $s1,16 | |
| 1346 sl${g}r $len,$s1 | |
| 1347 brc 4,.Lcbc_dec_tail # if borrow | |
| 1348 brc 2,.Lcbc_dec_done # if zero | |
| 1349 stg $s0,0($out) | |
| 1350 stg $s2,8($out) | |
| 1351 stmg $t0,$t1,16*$SIZE_T($sp) | |
| 1352 | |
| 1353 la $inp,16($inp) | |
| 1354 la $out,16($out) | |
| 1355 j .Lcbc_dec_loop | |
| 1356 | |
| 1357 .Lcbc_dec_done: | |
| 1358 stg $s0,0($out) | |
| 1359 stg $s2,8($out) | |
| 1360 .Lcbc_dec_exit: | |
| 1361 lm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 1362 stmg $t0,$t1,0($ivp) | |
| 1363 | |
| 1364 br $ra | |
| 1365 | |
| 1366 .align 16 | |
| 1367 .Lcbc_dec_tail: | |
| 1368 aghi $len,15 | |
| 1369 stg $s0,16*$SIZE_T($sp) | |
| 1370 stg $s2,16*$SIZE_T+8($sp) | |
| 1371 bras $s1,4f | |
| 1372 mvc 0(1,$out),16*$SIZE_T($sp) | |
| 1373 4: ex $len,0($s1) | |
| 1374 j .Lcbc_dec_exit | |
| 1375 .size AES_cbc_encrypt,.-AES_cbc_encrypt | |
| 1376 ___ | |
| 1377 } | |
| 1378 ######################################################################## | |
| 1379 # void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out, | |
| 1380 # size_t blocks, const AES_KEY *key, | |
| 1381 # const unsigned char *ivec) | |
| 1382 { | |
| 1383 my $inp="%r2"; | |
| 1384 my $out="%r4"; # blocks and out are swapped | |
| 1385 my $len="%r3"; | |
| 1386 my $key="%r5"; my $iv0="%r5"; | |
| 1387 my $ivp="%r6"; | |
| 1388 my $fp ="%r7"; | |
| 1389 | |
| 1390 $code.=<<___; | |
| 1391 .globl AES_ctr32_encrypt | |
| 1392 .type AES_ctr32_encrypt,\@function | |
| 1393 .align 16 | |
| 1394 AES_ctr32_encrypt: | |
| 1395 xgr %r3,%r4 # flip %r3 and %r4, $out and $len | |
| 1396 xgr %r4,%r3 | |
| 1397 xgr %r3,%r4 | |
| 1398 llgfr $len,$len # safe in ctr32 subroutine even in 64-bit case | |
| 1399 ___ | |
| 1400 $code.=<<___ if (!$softonly); | |
| 1401 l %r0,240($key) | |
| 1402 lhi %r1,16 | |
| 1403 clr %r0,%r1 | |
| 1404 jl .Lctr32_software | |
| 1405 | |
| 1406 stm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 1407 | |
| 1408 slgr $out,$inp | |
| 1409 la %r1,0($key) # %r1 is permanent copy of $key | |
| 1410 lg $iv0,0($ivp) # load ivec | |
| 1411 lg $ivp,8($ivp) | |
| 1412 | |
| 1413 # prepare and allocate stack frame at the top of 4K page | |
| 1414 # with 1K reserved for eventual signal handling | |
| 1415 lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer | |
| 1416 lghi $s1,-4096 | |
| 1417 algr $s0,$sp | |
| 1418 lgr $fp,$sp | |
| 1419 ngr $s0,$s1 # align at page boundary | |
| 1420 slgr $fp,$s0 # total buffer size | |
| 1421 lgr $s2,$sp | |
| 1422 lghi $s1,1024+16 # sl[g]fi is extended-immediate facility | |
| 1423 slgr $fp,$s1 # deduct reservation to get usable buffer size | |
| 1424 # buffer size is at lest 256 and at most 3072+256-16 | |
| 1425 | |
| 1426 la $sp,1024($s0) # alloca | |
| 1427 srlg $fp,$fp,4 # convert bytes to blocks, minimum 16 | |
| 1428 st${g} $s2,0($sp) # back-chain | |
| 1429 st${g} $fp,$SIZE_T($sp) | |
| 1430 | |
| 1431 slgr $len,$fp | |
| 1432 brc 1,.Lctr32_hw_switch # not zero, no borrow | |
| 1433 algr $fp,$len # input is shorter than allocated buffer | |
| 1434 lghi $len,0 | |
| 1435 st${g} $fp,$SIZE_T($sp) | |
| 1436 | |
| 1437 .Lctr32_hw_switch: | |
| 1438 ___ | |
| 1439 $code.=<<___ if (0); ######### kmctr code was measured to be ~12% slower | |
| 1440 larl $s0,OPENSSL_s390xcap_P | |
| 1441 lg $s0,8($s0) | |
| 1442 tmhh $s0,0x0004 # check for message_security-assist-4 | |
| 1443 jz .Lctr32_km_loop | |
| 1444 | |
| 1445 llgfr $s0,%r0 | |
| 1446 lgr $s1,%r1 | |
| 1447 lghi %r0,0 | |
| 1448 la %r1,16($sp) | |
| 1449 .long 0xb92d2042 # kmctr %r4,%r2,%r2 | |
| 1450 | |
| 1451 llihh %r0,0x8000 # check if kmctr supports the function code | |
| 1452 srlg %r0,%r0,0($s0) | |
| 1453 ng %r0,16($sp) | |
| 1454 lgr %r0,$s0 | |
| 1455 lgr %r1,$s1 | |
| 1456 jz .Lctr32_km_loop | |
| 1457 | |
| 1458 ####### kmctr code | |
| 1459 algr $out,$inp # restore $out | |
| 1460 lgr $s1,$len # $s1 undertakes $len | |
| 1461 j .Lctr32_kmctr_loop | |
| 1462 .align 16 | |
| 1463 .Lctr32_kmctr_loop: | |
| 1464 la $s2,16($sp) | |
| 1465 lgr $s3,$fp | |
| 1466 .Lctr32_kmctr_prepare: | |
| 1467 stg $iv0,0($s2) | |
| 1468 stg $ivp,8($s2) | |
| 1469 la $s2,16($s2) | |
| 1470 ahi $ivp,1 # 32-bit increment, preserves upper half | |
| 1471 brct $s3,.Lctr32_kmctr_prepare | |
| 1472 | |
| 1473 #la $inp,0($inp) # inp | |
| 1474 sllg $len,$fp,4 # len | |
| 1475 #la $out,0($out) # out | |
| 1476 la $s2,16($sp) # iv | |
| 1477 .long 0xb92da042 # kmctr $out,$s2,$inp | |
| 1478 brc 1,.-4 # pay attention to "partial completion" | |
| 1479 | |
| 1480 slgr $s1,$fp | |
| 1481 brc 1,.Lctr32_kmctr_loop # not zero, no borrow | |
| 1482 algr $fp,$s1 | |
| 1483 lghi $s1,0 | |
| 1484 brc 4+1,.Lctr32_kmctr_loop # not zero | |
| 1485 | |
| 1486 l${g} $sp,0($sp) | |
| 1487 lm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 1488 br $ra | |
| 1489 .align 16 | |
| 1490 ___ | |
| 1491 $code.=<<___; | |
| 1492 .Lctr32_km_loop: | |
| 1493 la $s2,16($sp) | |
| 1494 lgr $s3,$fp | |
| 1495 .Lctr32_km_prepare: | |
| 1496 stg $iv0,0($s2) | |
| 1497 stg $ivp,8($s2) | |
| 1498 la $s2,16($s2) | |
| 1499 ahi $ivp,1 # 32-bit increment, preserves upper half | |
| 1500 brct $s3,.Lctr32_km_prepare | |
| 1501 | |
| 1502 la $s0,16($sp) # inp | |
| 1503 sllg $s1,$fp,4 # len | |
| 1504 la $s2,16($sp) # out | |
| 1505 .long 0xb92e00a8 # km %r10,%r8 | |
| 1506 brc 1,.-4 # pay attention to "partial completion" | |
| 1507 | |
| 1508 la $s2,16($sp) | |
| 1509 lgr $s3,$fp | |
| 1510 slgr $s2,$inp | |
| 1511 .Lctr32_km_xor: | |
| 1512 lg $s0,0($inp) | |
| 1513 lg $s1,8($inp) | |
| 1514 xg $s0,0($s2,$inp) | |
| 1515 xg $s1,8($s2,$inp) | |
| 1516 stg $s0,0($out,$inp) | |
| 1517 stg $s1,8($out,$inp) | |
| 1518 la $inp,16($inp) | |
| 1519 brct $s3,.Lctr32_km_xor | |
| 1520 | |
| 1521 slgr $len,$fp | |
| 1522 brc 1,.Lctr32_km_loop # not zero, no borrow | |
| 1523 algr $fp,$len | |
| 1524 lghi $len,0 | |
| 1525 brc 4+1,.Lctr32_km_loop # not zero | |
| 1526 | |
| 1527 l${g} $s0,0($sp) | |
| 1528 l${g} $s1,$SIZE_T($sp) | |
| 1529 la $s2,16($sp) | |
| 1530 .Lctr32_km_zap: | |
| 1531 stg $s0,0($s2) | |
| 1532 stg $s0,8($s2) | |
| 1533 la $s2,16($s2) | |
| 1534 brct $s1,.Lctr32_km_zap | |
| 1535 | |
| 1536 la $sp,0($s0) | |
| 1537 lm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 1538 br $ra | |
| 1539 .align 16 | |
| 1540 .Lctr32_software: | |
| 1541 ___ | |
| 1542 $code.=<<___; | |
| 1543 stm${g} $key,$ra,5*$SIZE_T($sp) | |
| 1544 sl${g}r $inp,$out | |
| 1545 larl $tbl,AES_Te | |
| 1546 llgf $t1,12($ivp) | |
| 1547 | |
| 1548 .Lctr32_loop: | |
| 1549 stm${g} $inp,$out,2*$SIZE_T($sp) | |
| 1550 llgf $s0,0($ivp) | |
| 1551 llgf $s1,4($ivp) | |
| 1552 llgf $s2,8($ivp) | |
| 1553 lgr $s3,$t1 | |
| 1554 st $t1,16*$SIZE_T($sp) | |
| 1555 lgr %r4,$key | |
| 1556 | |
| 1557 bras $ra,_s390x_AES_encrypt | |
| 1558 | |
| 1559 lm${g} $inp,$ivp,2*$SIZE_T($sp) | |
| 1560 llgf $t1,16*$SIZE_T($sp) | |
| 1561 x $s0,0($inp,$out) | |
| 1562 x $s1,4($inp,$out) | |
| 1563 x $s2,8($inp,$out) | |
| 1564 x $s3,12($inp,$out) | |
| 1565 stm $s0,$s3,0($out) | |
| 1566 | |
| 1567 la $out,16($out) | |
| 1568 ahi $t1,1 # 32-bit increment | |
| 1569 brct $len,.Lctr32_loop | |
| 1570 | |
| 1571 lm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 1572 br $ra | |
| 1573 .size AES_ctr32_encrypt,.-AES_ctr32_encrypt | |
| 1574 ___ | |
| 1575 } | |
| 1576 | |
| 1577 ######################################################################## | |
| 1578 # void AES_xts_encrypt(const char *inp,char *out,size_t len, | |
| 1579 # const AES_KEY *key1, const AES_KEY *key2, | |
| 1580 # const unsigned char iv[16]); | |
| 1581 # | |
| 1582 { | |
| 1583 my $inp="%r2"; | |
| 1584 my $out="%r4"; # len and out are swapped | |
| 1585 my $len="%r3"; | |
| 1586 my $key1="%r5"; # $i1 | |
| 1587 my $key2="%r6"; # $i2 | |
| 1588 my $fp="%r7"; # $i3 | |
| 1589 my $tweak=16*$SIZE_T+16; # or $stdframe-16, bottom of the frame... | |
| 1590 | |
| 1591 $code.=<<___; | |
| 1592 .type _s390x_xts_km,\@function | |
| 1593 .align 16 | |
| 1594 _s390x_xts_km: | |
| 1595 ___ | |
| 1596 $code.=<<___ if(1); | |
| 1597 llgfr $s0,%r0 # put aside the function code | |
| 1598 lghi $s1,0x7f | |
| 1599 nr $s1,%r0 | |
| 1600 lghi %r0,0 # query capability vector | |
| 1601 la %r1,$tweak-16($sp) | |
| 1602 .long 0xb92e0042 # km %r4,%r2 | |
| 1603 llihh %r1,0x8000 | |
| 1604 srlg %r1,%r1,32($s1) # check for 32+function code | |
| 1605 ng %r1,$tweak-16($sp) | |
| 1606 lgr %r0,$s0 # restore the function code | |
| 1607 la %r1,0($key1) # restore $key1 | |
| 1608 jz .Lxts_km_vanilla | |
| 1609 | |
| 1610 lmg $i2,$i3,$tweak($sp) # put aside the tweak value | |
| 1611 algr $out,$inp | |
| 1612 | |
| 1613 oill %r0,32 # switch to xts function code | |
| 1614 aghi $s1,-18 # | |
| 1615 sllg $s1,$s1,3 # (function code - 18)*8, 0 or 16 | |
| 1616 la %r1,$tweak-16($sp) | |
| 1617 slgr %r1,$s1 # parameter block position | |
| 1618 lmg $s0,$s3,0($key1) # load 256 bits of key material, | |
| 1619 stmg $s0,$s3,0(%r1) # and copy it to parameter block. | |
| 1620 # yes, it contains junk and overlaps | |
| 1621 # with the tweak in 128-bit case. | |
| 1622 # it's done to avoid conditional | |
| 1623 # branch. | |
| 1624 stmg $i2,$i3,$tweak($sp) # "re-seat" the tweak value | |
| 1625 | |
| 1626 .long 0xb92e0042 # km %r4,%r2 | |
| 1627 brc 1,.-4 # pay attention to "partial completion" | |
| 1628 | |
| 1629 lrvg $s0,$tweak+0($sp) # load the last tweak | |
| 1630 lrvg $s1,$tweak+8($sp) | |
| 1631 stmg %r0,%r3,$tweak-32($sp) # wipe copy of the key | |
| 1632 | |
| 1633 nill %r0,0xffdf # switch back to original function code | |
| 1634 la %r1,0($key1) # restore pointer to $key1 | |
| 1635 slgr $out,$inp | |
| 1636 | |
| 1637 llgc $len,2*$SIZE_T-1($sp) | |
| 1638 nill $len,0x0f # $len%=16 | |
| 1639 br $ra | |
| 1640 | |
| 1641 .align 16 | |
| 1642 .Lxts_km_vanilla: | |
| 1643 ___ | |
| 1644 $code.=<<___; | |
| 1645 # prepare and allocate stack frame at the top of 4K page | |
| 1646 # with 1K reserved for eventual signal handling | |
| 1647 lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer | |
| 1648 lghi $s1,-4096 | |
| 1649 algr $s0,$sp | |
| 1650 lgr $fp,$sp | |
| 1651 ngr $s0,$s1 # align at page boundary | |
| 1652 slgr $fp,$s0 # total buffer size | |
| 1653 lgr $s2,$sp | |
| 1654 lghi $s1,1024+16 # sl[g]fi is extended-immediate facility | |
| 1655 slgr $fp,$s1 # deduct reservation to get usable buffer size | |
| 1656 # buffer size is at lest 256 and at most 3072+256-16 | |
| 1657 | |
| 1658 la $sp,1024($s0) # alloca | |
| 1659 nill $fp,0xfff0 # round to 16*n | |
| 1660 st${g} $s2,0($sp) # back-chain | |
| 1661 nill $len,0xfff0 # redundant | |
| 1662 st${g} $fp,$SIZE_T($sp) | |
| 1663 | |
| 1664 slgr $len,$fp | |
| 1665 brc 1,.Lxts_km_go # not zero, no borrow | |
| 1666 algr $fp,$len # input is shorter than allocated buffer | |
| 1667 lghi $len,0 | |
| 1668 st${g} $fp,$SIZE_T($sp) | |
| 1669 | |
| 1670 .Lxts_km_go: | |
| 1671 lrvg $s0,$tweak+0($s2) # load the tweak value in little-endian | |
| 1672 lrvg $s1,$tweak+8($s2) | |
| 1673 | |
| 1674 la $s2,16($sp) # vector of ascending tweak values | |
| 1675 slgr $s2,$inp | |
| 1676 srlg $s3,$fp,4 | |
| 1677 j .Lxts_km_start | |
| 1678 | |
| 1679 .Lxts_km_loop: | |
| 1680 la $s2,16($sp) | |
| 1681 slgr $s2,$inp | |
| 1682 srlg $s3,$fp,4 | |
| 1683 .Lxts_km_prepare: | |
| 1684 lghi $i1,0x87 | |
| 1685 srag $i2,$s1,63 # broadcast upper bit | |
| 1686 ngr $i1,$i2 # rem | |
| 1687 algr $s0,$s0 | |
| 1688 alcgr $s1,$s1 | |
| 1689 xgr $s0,$i1 | |
| 1690 .Lxts_km_start: | |
| 1691 lrvgr $i1,$s0 # flip byte order | |
| 1692 lrvgr $i2,$s1 | |
| 1693 stg $i1,0($s2,$inp) | |
| 1694 stg $i2,8($s2,$inp) | |
| 1695 xg $i1,0($inp) | |
| 1696 xg $i2,8($inp) | |
| 1697 stg $i1,0($out,$inp) | |
| 1698 stg $i2,8($out,$inp) | |
| 1699 la $inp,16($inp) | |
| 1700 brct $s3,.Lxts_km_prepare | |
| 1701 | |
| 1702 slgr $inp,$fp # rewind $inp | |
| 1703 la $s2,0($out,$inp) | |
| 1704 lgr $s3,$fp | |
| 1705 .long 0xb92e00aa # km $s2,$s2 | |
| 1706 brc 1,.-4 # pay attention to "partial completion" | |
| 1707 | |
| 1708 la $s2,16($sp) | |
| 1709 slgr $s2,$inp | |
| 1710 srlg $s3,$fp,4 | |
| 1711 .Lxts_km_xor: | |
| 1712 lg $i1,0($out,$inp) | |
| 1713 lg $i2,8($out,$inp) | |
| 1714 xg $i1,0($s2,$inp) | |
| 1715 xg $i2,8($s2,$inp) | |
| 1716 stg $i1,0($out,$inp) | |
| 1717 stg $i2,8($out,$inp) | |
| 1718 la $inp,16($inp) | |
| 1719 brct $s3,.Lxts_km_xor | |
| 1720 | |
| 1721 slgr $len,$fp | |
| 1722 brc 1,.Lxts_km_loop # not zero, no borrow | |
| 1723 algr $fp,$len | |
| 1724 lghi $len,0 | |
| 1725 brc 4+1,.Lxts_km_loop # not zero | |
| 1726 | |
| 1727 l${g} $i1,0($sp) # back-chain | |
| 1728 llgf $fp,`2*$SIZE_T-4`($sp) # bytes used | |
| 1729 la $i2,16($sp) | |
| 1730 srlg $fp,$fp,4 | |
| 1731 .Lxts_km_zap: | |
| 1732 stg $i1,0($i2) | |
| 1733 stg $i1,8($i2) | |
| 1734 la $i2,16($i2) | |
| 1735 brct $fp,.Lxts_km_zap | |
| 1736 | |
| 1737 la $sp,0($i1) | |
| 1738 llgc $len,2*$SIZE_T-1($i1) | |
| 1739 nill $len,0x0f # $len%=16 | |
| 1740 bzr $ra | |
| 1741 | |
| 1742 # generate one more tweak... | |
| 1743 lghi $i1,0x87 | |
| 1744 srag $i2,$s1,63 # broadcast upper bit | |
| 1745 ngr $i1,$i2 # rem | |
| 1746 algr $s0,$s0 | |
| 1747 alcgr $s1,$s1 | |
| 1748 xgr $s0,$i1 | |
| 1749 | |
| 1750 ltr $len,$len # clear zero flag | |
| 1751 br $ra | |
| 1752 .size _s390x_xts_km,.-_s390x_xts_km | |
| 1753 | |
| 1754 .globl AES_xts_encrypt | |
| 1755 .type AES_xts_encrypt,\@function | |
| 1756 .align 16 | |
| 1757 AES_xts_encrypt: | |
| 1758 xgr %r3,%r4 # flip %r3 and %r4, $out and $len | |
| 1759 xgr %r4,%r3 | |
| 1760 xgr %r3,%r4 | |
| 1761 ___ | |
| 1762 $code.=<<___ if ($SIZE_T==4); | |
| 1763 llgfr $len,$len | |
| 1764 ___ | |
| 1765 $code.=<<___; | |
| 1766 st${g} $len,1*$SIZE_T($sp) # save copy of $len | |
| 1767 srag $len,$len,4 # formally wrong, because it expands | |
| 1768 # sign byte, but who can afford asking | |
| 1769 # to process more than 2^63-1 bytes? | |
| 1770 # I use it, because it sets condition | |
| 1771 # code... | |
| 1772 bcr 8,$ra # abort if zero (i.e. less than 16) | |
| 1773 ___ | |
| 1774 $code.=<<___ if (!$softonly); | |
| 1775 llgf %r0,240($key2) | |
| 1776 lhi %r1,16 | |
| 1777 clr %r0,%r1 | |
| 1778 jl .Lxts_enc_software | |
| 1779 | |
| 1780 st${g} $ra,5*$SIZE_T($sp) | |
| 1781 stm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 1782 | |
| 1783 sllg $len,$len,4 # $len&=~15 | |
| 1784 slgr $out,$inp | |
| 1785 | |
| 1786 # generate the tweak value | |
| 1787 l${g} $s3,$stdframe($sp) # pointer to iv | |
| 1788 la $s2,$tweak($sp) | |
| 1789 lmg $s0,$s1,0($s3) | |
| 1790 lghi $s3,16 | |
| 1791 stmg $s0,$s1,0($s2) | |
| 1792 la %r1,0($key2) # $key2 is not needed anymore | |
| 1793 .long 0xb92e00aa # km $s2,$s2, generate the tweak | |
| 1794 brc 1,.-4 # can this happen? | |
| 1795 | |
| 1796 l %r0,240($key1) | |
| 1797 la %r1,0($key1) # $key1 is not needed anymore | |
| 1798 bras $ra,_s390x_xts_km | |
| 1799 jz .Lxts_enc_km_done | |
| 1800 | |
| 1801 aghi $inp,-16 # take one step back | |
| 1802 la $i3,0($out,$inp) # put aside real $out | |
| 1803 .Lxts_enc_km_steal: | |
| 1804 llgc $i1,16($inp) | |
| 1805 llgc $i2,0($out,$inp) | |
| 1806 stc $i1,0($out,$inp) | |
| 1807 stc $i2,16($out,$inp) | |
| 1808 la $inp,1($inp) | |
| 1809 brct $len,.Lxts_enc_km_steal | |
| 1810 | |
| 1811 la $s2,0($i3) | |
| 1812 lghi $s3,16 | |
| 1813 lrvgr $i1,$s0 # flip byte order | |
| 1814 lrvgr $i2,$s1 | |
| 1815 xg $i1,0($s2) | |
| 1816 xg $i2,8($s2) | |
| 1817 stg $i1,0($s2) | |
| 1818 stg $i2,8($s2) | |
| 1819 .long 0xb92e00aa # km $s2,$s2 | |
| 1820 brc 1,.-4 # can this happen? | |
| 1821 lrvgr $i1,$s0 # flip byte order | |
| 1822 lrvgr $i2,$s1 | |
| 1823 xg $i1,0($i3) | |
| 1824 xg $i2,8($i3) | |
| 1825 stg $i1,0($i3) | |
| 1826 stg $i2,8($i3) | |
| 1827 | |
| 1828 .Lxts_enc_km_done: | |
| 1829 stg $sp,$tweak+0($sp) # wipe tweak | |
| 1830 stg $sp,$tweak+8($sp) | |
| 1831 l${g} $ra,5*$SIZE_T($sp) | |
| 1832 lm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 1833 br $ra | |
| 1834 .align 16 | |
| 1835 .Lxts_enc_software: | |
| 1836 ___ | |
| 1837 $code.=<<___; | |
| 1838 stm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 1839 | |
| 1840 slgr $out,$inp | |
| 1841 | |
| 1842 l${g} $s3,$stdframe($sp) # ivp | |
| 1843 llgf $s0,0($s3) # load iv | |
| 1844 llgf $s1,4($s3) | |
| 1845 llgf $s2,8($s3) | |
| 1846 llgf $s3,12($s3) | |
| 1847 stm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 1848 la $key,0($key2) | |
| 1849 larl $tbl,AES_Te | |
| 1850 bras $ra,_s390x_AES_encrypt # generate the tweak | |
| 1851 lm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 1852 stm $s0,$s3,$tweak($sp) # save the tweak | |
| 1853 j .Lxts_enc_enter | |
| 1854 | |
| 1855 .align 16 | |
| 1856 .Lxts_enc_loop: | |
| 1857 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian | |
| 1858 lrvg $s3,$tweak+8($sp) | |
| 1859 lghi %r1,0x87 | |
| 1860 srag %r0,$s3,63 # broadcast upper bit | |
| 1861 ngr %r1,%r0 # rem | |
| 1862 algr $s1,$s1 | |
| 1863 alcgr $s3,$s3 | |
| 1864 xgr $s1,%r1 | |
| 1865 lrvgr $s1,$s1 # flip byte order | |
| 1866 lrvgr $s3,$s3 | |
| 1867 srlg $s0,$s1,32 # smash the tweak to 4x32-bits | |
| 1868 stg $s1,$tweak+0($sp) # save the tweak | |
| 1869 llgfr $s1,$s1 | |
| 1870 srlg $s2,$s3,32 | |
| 1871 stg $s3,$tweak+8($sp) | |
| 1872 llgfr $s3,$s3 | |
| 1873 la $inp,16($inp) # $inp+=16 | |
| 1874 .Lxts_enc_enter: | |
| 1875 x $s0,0($inp) # ^=*($inp) | |
| 1876 x $s1,4($inp) | |
| 1877 x $s2,8($inp) | |
| 1878 x $s3,12($inp) | |
| 1879 stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing | |
| 1880 la $key,0($key1) | |
| 1881 bras $ra,_s390x_AES_encrypt | |
| 1882 lm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 1883 x $s0,$tweak+0($sp) # ^=tweak | |
| 1884 x $s1,$tweak+4($sp) | |
| 1885 x $s2,$tweak+8($sp) | |
| 1886 x $s3,$tweak+12($sp) | |
| 1887 st $s0,0($out,$inp) | |
| 1888 st $s1,4($out,$inp) | |
| 1889 st $s2,8($out,$inp) | |
| 1890 st $s3,12($out,$inp) | |
| 1891 brct${g} $len,.Lxts_enc_loop | |
| 1892 | |
| 1893 llgc $len,`2*$SIZE_T-1`($sp) | |
| 1894 nill $len,0x0f # $len%16 | |
| 1895 jz .Lxts_enc_done | |
| 1896 | |
| 1897 la $i3,0($inp,$out) # put aside real $out | |
| 1898 .Lxts_enc_steal: | |
| 1899 llgc %r0,16($inp) | |
| 1900 llgc %r1,0($out,$inp) | |
| 1901 stc %r0,0($out,$inp) | |
| 1902 stc %r1,16($out,$inp) | |
| 1903 la $inp,1($inp) | |
| 1904 brct $len,.Lxts_enc_steal | |
| 1905 la $out,0($i3) # restore real $out | |
| 1906 | |
| 1907 # generate last tweak... | |
| 1908 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian | |
| 1909 lrvg $s3,$tweak+8($sp) | |
| 1910 lghi %r1,0x87 | |
| 1911 srag %r0,$s3,63 # broadcast upper bit | |
| 1912 ngr %r1,%r0 # rem | |
| 1913 algr $s1,$s1 | |
| 1914 alcgr $s3,$s3 | |
| 1915 xgr $s1,%r1 | |
| 1916 lrvgr $s1,$s1 # flip byte order | |
| 1917 lrvgr $s3,$s3 | |
| 1918 srlg $s0,$s1,32 # smash the tweak to 4x32-bits | |
| 1919 stg $s1,$tweak+0($sp) # save the tweak | |
| 1920 llgfr $s1,$s1 | |
| 1921 srlg $s2,$s3,32 | |
| 1922 stg $s3,$tweak+8($sp) | |
| 1923 llgfr $s3,$s3 | |
| 1924 | |
| 1925 x $s0,0($out) # ^=*(inp)|stolen cipther-text | |
| 1926 x $s1,4($out) | |
| 1927 x $s2,8($out) | |
| 1928 x $s3,12($out) | |
| 1929 st${g} $out,4*$SIZE_T($sp) | |
| 1930 la $key,0($key1) | |
| 1931 bras $ra,_s390x_AES_encrypt | |
| 1932 l${g} $out,4*$SIZE_T($sp) | |
| 1933 x $s0,`$tweak+0`($sp) # ^=tweak | |
| 1934 x $s1,`$tweak+4`($sp) | |
| 1935 x $s2,`$tweak+8`($sp) | |
| 1936 x $s3,`$tweak+12`($sp) | |
| 1937 st $s0,0($out) | |
| 1938 st $s1,4($out) | |
| 1939 st $s2,8($out) | |
| 1940 st $s3,12($out) | |
| 1941 | |
| 1942 .Lxts_enc_done: | |
| 1943 stg $sp,$tweak+0($sp) # wipe tweak | |
| 1944 stg $sp,$twesk+8($sp) | |
| 1945 lm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 1946 br $ra | |
| 1947 .size AES_xts_encrypt,.-AES_xts_encrypt | |
| 1948 ___ | |
| 1949 # void AES_xts_decrypt(const char *inp,char *out,size_t len, | |
| 1950 # const AES_KEY *key1, const AES_KEY *key2, | |
| 1951 # const unsigned char iv[16]); | |
| 1952 # | |
| 1953 $code.=<<___; | |
| 1954 .globl AES_xts_decrypt | |
| 1955 .type AES_xts_decrypt,\@function | |
| 1956 .align 16 | |
| 1957 AES_xts_decrypt: | |
| 1958 xgr %r3,%r4 # flip %r3 and %r4, $out and $len | |
| 1959 xgr %r4,%r3 | |
| 1960 xgr %r3,%r4 | |
| 1961 ___ | |
| 1962 $code.=<<___ if ($SIZE_T==4); | |
| 1963 llgfr $len,$len | |
| 1964 ___ | |
| 1965 $code.=<<___; | |
| 1966 st${g} $len,1*$SIZE_T($sp) # save copy of $len | |
| 1967 aghi $len,-16 | |
| 1968 bcr 4,$ra # abort if less than zero. formally | |
| 1969 # wrong, because $len is unsigned, | |
| 1970 # but who can afford asking to | |
| 1971 # process more than 2^63-1 bytes? | |
| 1972 tmll $len,0x0f | |
| 1973 jnz .Lxts_dec_proceed | |
| 1974 aghi $len,16 | |
| 1975 .Lxts_dec_proceed: | |
| 1976 ___ | |
| 1977 $code.=<<___ if (!$softonly); | |
| 1978 llgf %r0,240($key2) | |
| 1979 lhi %r1,16 | |
| 1980 clr %r0,%r1 | |
| 1981 jl .Lxts_dec_software | |
| 1982 | |
| 1983 st${g} $ra,5*$SIZE_T($sp) | |
| 1984 stm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 1985 | |
| 1986 nill $len,0xfff0 # $len&=~15 | |
| 1987 slgr $out,$inp | |
| 1988 | |
| 1989 # generate the tweak value | |
| 1990 l${g} $s3,$stdframe($sp) # pointer to iv | |
| 1991 la $s2,$tweak($sp) | |
| 1992 lmg $s0,$s1,0($s3) | |
| 1993 lghi $s3,16 | |
| 1994 stmg $s0,$s1,0($s2) | |
| 1995 la %r1,0($key2) # $key2 is not needed past this point | |
| 1996 .long 0xb92e00aa # km $s2,$s2, generate the tweak | |
| 1997 brc 1,.-4 # can this happen? | |
| 1998 | |
| 1999 l %r0,240($key1) | |
| 2000 la %r1,0($key1) # $key1 is not needed anymore | |
| 2001 | |
| 2002 ltgr $len,$len | |
| 2003 jz .Lxts_dec_km_short | |
| 2004 bras $ra,_s390x_xts_km | |
| 2005 jz .Lxts_dec_km_done | |
| 2006 | |
| 2007 lrvgr $s2,$s0 # make copy in reverse byte order | |
| 2008 lrvgr $s3,$s1 | |
| 2009 j .Lxts_dec_km_2ndtweak | |
| 2010 | |
| 2011 .Lxts_dec_km_short: | |
| 2012 llgc $len,`2*$SIZE_T-1`($sp) | |
| 2013 nill $len,0x0f # $len%=16 | |
| 2014 lrvg $s0,$tweak+0($sp) # load the tweak | |
| 2015 lrvg $s1,$tweak+8($sp) | |
| 2016 lrvgr $s2,$s0 # make copy in reverse byte order | |
| 2017 lrvgr $s3,$s1 | |
| 2018 | |
| 2019 .Lxts_dec_km_2ndtweak: | |
| 2020 lghi $i1,0x87 | |
| 2021 srag $i2,$s1,63 # broadcast upper bit | |
| 2022 ngr $i1,$i2 # rem | |
| 2023 algr $s0,$s0 | |
| 2024 alcgr $s1,$s1 | |
| 2025 xgr $s0,$i1 | |
| 2026 lrvgr $i1,$s0 # flip byte order | |
| 2027 lrvgr $i2,$s1 | |
| 2028 | |
| 2029 xg $i1,0($inp) | |
| 2030 xg $i2,8($inp) | |
| 2031 stg $i1,0($out,$inp) | |
| 2032 stg $i2,8($out,$inp) | |
| 2033 la $i2,0($out,$inp) | |
| 2034 lghi $i3,16 | |
| 2035 .long 0xb92e0066 # km $i2,$i2 | |
| 2036 brc 1,.-4 # can this happen? | |
| 2037 lrvgr $i1,$s0 | |
| 2038 lrvgr $i2,$s1 | |
| 2039 xg $i1,0($out,$inp) | |
| 2040 xg $i2,8($out,$inp) | |
| 2041 stg $i1,0($out,$inp) | |
| 2042 stg $i2,8($out,$inp) | |
| 2043 | |
| 2044 la $i3,0($out,$inp) # put aside real $out | |
| 2045 .Lxts_dec_km_steal: | |
| 2046 llgc $i1,16($inp) | |
| 2047 llgc $i2,0($out,$inp) | |
| 2048 stc $i1,0($out,$inp) | |
| 2049 stc $i2,16($out,$inp) | |
| 2050 la $inp,1($inp) | |
| 2051 brct $len,.Lxts_dec_km_steal | |
| 2052 | |
| 2053 lgr $s0,$s2 | |
| 2054 lgr $s1,$s3 | |
| 2055 xg $s0,0($i3) | |
| 2056 xg $s1,8($i3) | |
| 2057 stg $s0,0($i3) | |
| 2058 stg $s1,8($i3) | |
| 2059 la $s0,0($i3) | |
| 2060 lghi $s1,16 | |
| 2061 .long 0xb92e0088 # km $s0,$s0 | |
| 2062 brc 1,.-4 # can this happen? | |
| 2063 xg $s2,0($i3) | |
| 2064 xg $s3,8($i3) | |
| 2065 stg $s2,0($i3) | |
| 2066 stg $s3,8($i3) | |
| 2067 .Lxts_dec_km_done: | |
| 2068 stg $sp,$tweak+0($sp) # wipe tweak | |
| 2069 stg $sp,$tweak+8($sp) | |
| 2070 l${g} $ra,5*$SIZE_T($sp) | |
| 2071 lm${g} %r6,$s3,6*$SIZE_T($sp) | |
| 2072 br $ra | |
| 2073 .align 16 | |
| 2074 .Lxts_dec_software: | |
| 2075 ___ | |
| 2076 $code.=<<___; | |
| 2077 stm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 2078 | |
| 2079 srlg $len,$len,4 | |
| 2080 slgr $out,$inp | |
| 2081 | |
| 2082 l${g} $s3,$stdframe($sp) # ivp | |
| 2083 llgf $s0,0($s3) # load iv | |
| 2084 llgf $s1,4($s3) | |
| 2085 llgf $s2,8($s3) | |
| 2086 llgf $s3,12($s3) | |
| 2087 stm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 2088 la $key,0($key2) | |
| 2089 larl $tbl,AES_Te | |
| 2090 bras $ra,_s390x_AES_encrypt # generate the tweak | |
| 2091 lm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 2092 larl $tbl,AES_Td | |
| 2093 lt${g}r $len,$len | |
| 2094 stm $s0,$s3,$tweak($sp) # save the tweak | |
| 2095 jz .Lxts_dec_short | |
| 2096 j .Lxts_dec_enter | |
| 2097 | |
| 2098 .align 16 | |
| 2099 .Lxts_dec_loop: | |
| 2100 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian | |
| 2101 lrvg $s3,$tweak+8($sp) | |
| 2102 lghi %r1,0x87 | |
| 2103 srag %r0,$s3,63 # broadcast upper bit | |
| 2104 ngr %r1,%r0 # rem | |
| 2105 algr $s1,$s1 | |
| 2106 alcgr $s3,$s3 | |
| 2107 xgr $s1,%r1 | |
| 2108 lrvgr $s1,$s1 # flip byte order | |
| 2109 lrvgr $s3,$s3 | |
| 2110 srlg $s0,$s1,32 # smash the tweak to 4x32-bits | |
| 2111 stg $s1,$tweak+0($sp) # save the tweak | |
| 2112 llgfr $s1,$s1 | |
| 2113 srlg $s2,$s3,32 | |
| 2114 stg $s3,$tweak+8($sp) | |
| 2115 llgfr $s3,$s3 | |
| 2116 .Lxts_dec_enter: | |
| 2117 x $s0,0($inp) # tweak^=*(inp) | |
| 2118 x $s1,4($inp) | |
| 2119 x $s2,8($inp) | |
| 2120 x $s3,12($inp) | |
| 2121 stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing | |
| 2122 la $key,0($key1) | |
| 2123 bras $ra,_s390x_AES_decrypt | |
| 2124 lm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 2125 x $s0,$tweak+0($sp) # ^=tweak | |
| 2126 x $s1,$tweak+4($sp) | |
| 2127 x $s2,$tweak+8($sp) | |
| 2128 x $s3,$tweak+12($sp) | |
| 2129 st $s0,0($out,$inp) | |
| 2130 st $s1,4($out,$inp) | |
| 2131 st $s2,8($out,$inp) | |
| 2132 st $s3,12($out,$inp) | |
| 2133 la $inp,16($inp) | |
| 2134 brct${g} $len,.Lxts_dec_loop | |
| 2135 | |
| 2136 llgc $len,`2*$SIZE_T-1`($sp) | |
| 2137 nill $len,0x0f # $len%16 | |
| 2138 jz .Lxts_dec_done | |
| 2139 | |
| 2140 # generate pair of tweaks... | |
| 2141 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian | |
| 2142 lrvg $s3,$tweak+8($sp) | |
| 2143 lghi %r1,0x87 | |
| 2144 srag %r0,$s3,63 # broadcast upper bit | |
| 2145 ngr %r1,%r0 # rem | |
| 2146 algr $s1,$s1 | |
| 2147 alcgr $s3,$s3 | |
| 2148 xgr $s1,%r1 | |
| 2149 lrvgr $i2,$s1 # flip byte order | |
| 2150 lrvgr $i3,$s3 | |
| 2151 stmg $i2,$i3,$tweak($sp) # save the 1st tweak | |
| 2152 j .Lxts_dec_2ndtweak | |
| 2153 | |
| 2154 .align 16 | |
| 2155 .Lxts_dec_short: | |
| 2156 llgc $len,`2*$SIZE_T-1`($sp) | |
| 2157 nill $len,0x0f # $len%16 | |
| 2158 lrvg $s1,$tweak+0($sp) # load the tweak in little-endian | |
| 2159 lrvg $s3,$tweak+8($sp) | |
| 2160 .Lxts_dec_2ndtweak: | |
| 2161 lghi %r1,0x87 | |
| 2162 srag %r0,$s3,63 # broadcast upper bit | |
| 2163 ngr %r1,%r0 # rem | |
| 2164 algr $s1,$s1 | |
| 2165 alcgr $s3,$s3 | |
| 2166 xgr $s1,%r1 | |
| 2167 lrvgr $s1,$s1 # flip byte order | |
| 2168 lrvgr $s3,$s3 | |
| 2169 srlg $s0,$s1,32 # smash the tweak to 4x32-bits | |
| 2170 stg $s1,$tweak-16+0($sp) # save the 2nd tweak | |
| 2171 llgfr $s1,$s1 | |
| 2172 srlg $s2,$s3,32 | |
| 2173 stg $s3,$tweak-16+8($sp) | |
| 2174 llgfr $s3,$s3 | |
| 2175 | |
| 2176 x $s0,0($inp) # tweak_the_2nd^=*(inp) | |
| 2177 x $s1,4($inp) | |
| 2178 x $s2,8($inp) | |
| 2179 x $s3,12($inp) | |
| 2180 stm${g} %r2,%r3,2*$SIZE_T($sp) | |
| 2181 la $key,0($key1) | |
| 2182 bras $ra,_s390x_AES_decrypt | |
| 2183 lm${g} %r2,%r5,2*$SIZE_T($sp) | |
| 2184 x $s0,$tweak-16+0($sp) # ^=tweak_the_2nd | |
| 2185 x $s1,$tweak-16+4($sp) | |
| 2186 x $s2,$tweak-16+8($sp) | |
| 2187 x $s3,$tweak-16+12($sp) | |
| 2188 st $s0,0($out,$inp) | |
| 2189 st $s1,4($out,$inp) | |
| 2190 st $s2,8($out,$inp) | |
| 2191 st $s3,12($out,$inp) | |
| 2192 | |
| 2193 la $i3,0($out,$inp) # put aside real $out | |
| 2194 .Lxts_dec_steal: | |
| 2195 llgc %r0,16($inp) | |
| 2196 llgc %r1,0($out,$inp) | |
| 2197 stc %r0,0($out,$inp) | |
| 2198 stc %r1,16($out,$inp) | |
| 2199 la $inp,1($inp) | |
| 2200 brct $len,.Lxts_dec_steal | |
| 2201 la $out,0($i3) # restore real $out | |
| 2202 | |
| 2203 lm $s0,$s3,$tweak($sp) # load the 1st tweak | |
| 2204 x $s0,0($out) # tweak^=*(inp)|stolen cipher-text | |
| 2205 x $s1,4($out) | |
| 2206 x $s2,8($out) | |
| 2207 x $s3,12($out) | |
| 2208 st${g} $out,4*$SIZE_T($sp) | |
| 2209 la $key,0($key1) | |
| 2210 bras $ra,_s390x_AES_decrypt | |
| 2211 l${g} $out,4*$SIZE_T($sp) | |
| 2212 x $s0,$tweak+0($sp) # ^=tweak | |
| 2213 x $s1,$tweak+4($sp) | |
| 2214 x $s2,$tweak+8($sp) | |
| 2215 x $s3,$tweak+12($sp) | |
| 2216 st $s0,0($out) | |
| 2217 st $s1,4($out) | |
| 2218 st $s2,8($out) | |
| 2219 st $s3,12($out) | |
| 2220 stg $sp,$tweak-16+0($sp) # wipe 2nd tweak | |
| 2221 stg $sp,$tweak-16+8($sp) | |
| 2222 .Lxts_dec_done: | |
| 2223 stg $sp,$tweak+0($sp) # wipe tweak | |
| 2224 stg $sp,$twesk+8($sp) | |
| 2225 lm${g} %r6,$ra,6*$SIZE_T($sp) | |
| 2226 br $ra | |
| 2227 .size AES_xts_decrypt,.-AES_xts_decrypt | |
| 2228 ___ | |
| 2229 } | |
| 2230 $code.=<<___; | |
| 2231 .string "AES for s390x, CRYPTOGAMS by <appro\@openssl.org>" | |
| 2232 .comm OPENSSL_s390xcap_P,16,8 | |
| 2233 ___ | |
| 2234 | |
| 2235 $code =~ s/\`([^\`]*)\`/eval $1/gem; | |
| 2236 print $code; | |
| 2237 close STDOUT; # force flush | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master