projects / thirdparty / openssl.git / blame
| Commit | Line | Data |
|---|---|---|
| a35c3a9f | 1 | #!/usr/bin/env perl |
| da1c088f | 2 | # Copyright 2020-2023 The OpenSSL Project Authors. All Rights Reserved. |
| a35c3a9f TC |
3 | # |
| 4 | # Licensed under the Apache License 2.0 (the "License"). You may not use | |
| 5 | # this file except in compliance with the License. You can obtain a copy | |
| 6 | # in the file LICENSE in the source distribution or at | |
| 7 | # https://www.openssl.org/source/license.html | |
| 8 | ||
| 9 | use strict; | |
| 10 | ||
| 11 | my $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef; | |
| 12 | my $flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef; | |
| 13 | my $xlate; | |
| 14 | ||
| 15 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; my $dir=$1; | |
| 16 | ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or | |
| 17 | ( $xlate="${dir}../../perlasm/arm-xlate.pl" and -f $xlate ) or | |
| 18 | die "can't locate arm-xlate.pl"; | |
| 19 | ||
| 20 | open OUT,"| \"$^X\" $xlate $flavour $output"; | |
| 21 | *STDOUT=*OUT; | |
| 22 | ||
| 23 | my $code = data(); | |
| 24 | print $code; | |
| 25 | ||
| 26 | close STDOUT or die "error closing STDOUT: $!"; # enforce flush | |
| 27 | ||
| 28 | sub data | |
| 29 | { | |
| 30 | local $/; | |
| 31 | return <DATA>; | |
| 32 | } | |
| 33 | ||
| 34 | __END__ | |
| da1c088f | 35 | // Copyright 2021-2023 The OpenSSL Project Authors. All Rights Reserved. |
| 82551af5 BA |
36 | // |
| 37 | // Licensed under the OpenSSL license (the "License"). You may not use | |
| 38 | // this file except in compliance with the License. You can obtain a copy | |
| 39 | // in the file LICENSE in the source distribution or at | |
| 40 | // https://www.openssl.org/source/license.html | |
| 41 | // | |
| 42 | // ==================================================================== | |
| 43 | // Written by Ben Avison <bavison@riscosopen.org> for the OpenSSL | |
| 44 | // project. Rights for redistribution and usage in source and binary | |
| 45 | // forms are granted according to the OpenSSL license. | |
| 46 | // ==================================================================== | |
| 47 | // | |
| 48 | // This implementation is a translation of bsaes-armv7 for AArch64. | |
| 49 | // No attempt has been made to carry across the build switches for | |
| 50 | // kernel targets, since the Linux kernel crypto support has moved on | |
| 51 | // from when it was based on OpenSSL. | |
| 52 | ||
| 53 | // A lot of hand-scheduling has been performed. Consequently, this code | |
| 54 | // doesn't factor out neatly into macros in the same way that the | |
| 55 | // AArch32 version did, and there is little to be gained by wrapping it | |
| 56 | // up in Perl, and it is presented as pure assembly. | |
| 57 | ||
| 58 | ||
| 59 | #include "crypto/arm_arch.h" | |
| 60 | ||
| 61 | .text | |
| 62 | ||
| a35c3a9f TC |
63 | .extern AES_cbc_encrypt |
| 64 | .extern AES_encrypt | |
| 65 | .extern AES_decrypt | |
| 66 | ||
| 82551af5 BA |
67 | .type _bsaes_decrypt8,%function |
| 68 | .align 4 | |
| 69 | // On entry: | |
| 70 | // x9 -> key (previously expanded using _bsaes_key_convert) | |
| 71 | // x10 = number of rounds | |
| 72 | // v0-v7 input data | |
| 73 | // On exit: | |
| 74 | // x9-x11 corrupted | |
| 75 | // other general-purpose registers preserved | |
| 76 | // v0-v7 output data | |
| 77 | // v11-v15 preserved | |
| 78 | // other SIMD registers corrupted | |
| 79 | _bsaes_decrypt8: | |
| 80 | ldr q8, [x9], #16 | |
| 81 | adr x11, .LM0ISR | |
| 82 | movi v9.16b, #0x55 | |
| 83 | ldr q10, [x11], #16 | |
| 84 | movi v16.16b, #0x33 | |
| 85 | movi v17.16b, #0x0f | |
| 86 | sub x10, x10, #1 | |
| 87 | eor v0.16b, v0.16b, v8.16b | |
| 88 | eor v1.16b, v1.16b, v8.16b | |
| 89 | eor v2.16b, v2.16b, v8.16b | |
| 90 | eor v4.16b, v4.16b, v8.16b | |
| 91 | eor v3.16b, v3.16b, v8.16b | |
| 92 | eor v5.16b, v5.16b, v8.16b | |
| 93 | tbl v0.16b, {v0.16b}, v10.16b | |
| 94 | tbl v1.16b, {v1.16b}, v10.16b | |
| 95 | tbl v2.16b, {v2.16b}, v10.16b | |
| 96 | tbl v4.16b, {v4.16b}, v10.16b | |
| 97 | eor v6.16b, v6.16b, v8.16b | |
| 98 | eor v7.16b, v7.16b, v8.16b | |
| 99 | tbl v3.16b, {v3.16b}, v10.16b | |
| 100 | tbl v5.16b, {v5.16b}, v10.16b | |
| 101 | tbl v6.16b, {v6.16b}, v10.16b | |
| 102 | ushr v8.2d, v0.2d, #1 | |
| 103 | tbl v7.16b, {v7.16b}, v10.16b | |
| 104 | ushr v10.2d, v4.2d, #1 | |
| 105 | ushr v18.2d, v2.2d, #1 | |
| 106 | eor v8.16b, v8.16b, v1.16b | |
| 107 | ushr v19.2d, v6.2d, #1 | |
| 108 | eor v10.16b, v10.16b, v5.16b | |
| 109 | eor v18.16b, v18.16b, v3.16b | |
| 110 | and v8.16b, v8.16b, v9.16b | |
| 111 | eor v19.16b, v19.16b, v7.16b | |
| 112 | and v10.16b, v10.16b, v9.16b | |
| 113 | and v18.16b, v18.16b, v9.16b | |
| 114 | eor v1.16b, v1.16b, v8.16b | |
| 115 | shl v8.2d, v8.2d, #1 | |
| 116 | and v9.16b, v19.16b, v9.16b | |
| 117 | eor v5.16b, v5.16b, v10.16b | |
| 118 | shl v10.2d, v10.2d, #1 | |
| 119 | eor v3.16b, v3.16b, v18.16b | |
| 120 | shl v18.2d, v18.2d, #1 | |
| 121 | eor v0.16b, v0.16b, v8.16b | |
| 122 | shl v8.2d, v9.2d, #1 | |
| 123 | eor v7.16b, v7.16b, v9.16b | |
| 124 | eor v4.16b, v4.16b, v10.16b | |
| 125 | eor v2.16b, v2.16b, v18.16b | |
| 126 | ushr v9.2d, v1.2d, #2 | |
| 127 | eor v6.16b, v6.16b, v8.16b | |
| 128 | ushr v8.2d, v0.2d, #2 | |
| 129 | ushr v10.2d, v5.2d, #2 | |
| 130 | ushr v18.2d, v4.2d, #2 | |
| 131 | eor v9.16b, v9.16b, v3.16b | |
| 132 | eor v8.16b, v8.16b, v2.16b | |
| 133 | eor v10.16b, v10.16b, v7.16b | |
| 134 | eor v18.16b, v18.16b, v6.16b | |
| 135 | and v9.16b, v9.16b, v16.16b | |
| 136 | and v8.16b, v8.16b, v16.16b | |
| 137 | and v10.16b, v10.16b, v16.16b | |
| 138 | and v16.16b, v18.16b, v16.16b | |
| 139 | eor v3.16b, v3.16b, v9.16b | |
| 140 | shl v9.2d, v9.2d, #2 | |
| 141 | eor v2.16b, v2.16b, v8.16b | |
| 142 | shl v8.2d, v8.2d, #2 | |
| 143 | eor v7.16b, v7.16b, v10.16b | |
| 144 | shl v10.2d, v10.2d, #2 | |
| 145 | eor v6.16b, v6.16b, v16.16b | |
| 146 | shl v16.2d, v16.2d, #2 | |
| 147 | eor v1.16b, v1.16b, v9.16b | |
| 148 | eor v0.16b, v0.16b, v8.16b | |
| 149 | eor v5.16b, v5.16b, v10.16b | |
| 150 | eor v4.16b, v4.16b, v16.16b | |
| 151 | ushr v8.2d, v3.2d, #4 | |
| 152 | ushr v9.2d, v2.2d, #4 | |
| 153 | ushr v10.2d, v1.2d, #4 | |
| 154 | ushr v16.2d, v0.2d, #4 | |
| 155 | eor v8.16b, v8.16b, v7.16b | |
| 156 | eor v9.16b, v9.16b, v6.16b | |
| 157 | eor v10.16b, v10.16b, v5.16b | |
| 158 | eor v16.16b, v16.16b, v4.16b | |
| 159 | and v8.16b, v8.16b, v17.16b | |
| 160 | and v9.16b, v9.16b, v17.16b | |
| 161 | and v10.16b, v10.16b, v17.16b | |
| 162 | and v16.16b, v16.16b, v17.16b | |
| 163 | eor v7.16b, v7.16b, v8.16b | |
| 164 | shl v8.2d, v8.2d, #4 | |
| 165 | eor v6.16b, v6.16b, v9.16b | |
| 166 | shl v9.2d, v9.2d, #4 | |
| 167 | eor v5.16b, v5.16b, v10.16b | |
| 168 | shl v10.2d, v10.2d, #4 | |
| 169 | eor v4.16b, v4.16b, v16.16b | |
| 170 | shl v16.2d, v16.2d, #4 | |
| 171 | eor v3.16b, v3.16b, v8.16b | |
| 172 | eor v2.16b, v2.16b, v9.16b | |
| 173 | eor v1.16b, v1.16b, v10.16b | |
| 174 | eor v0.16b, v0.16b, v16.16b | |
| 175 | b .Ldec_sbox | |
| 176 | .align 4 | |
| 177 | .Ldec_loop: | |
| 178 | ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x9], #64 | |
| 179 | ldp q8, q9, [x9], #32 | |
| 180 | eor v0.16b, v16.16b, v0.16b | |
| 181 | ldr q10, [x9], #16 | |
| 182 | eor v1.16b, v17.16b, v1.16b | |
| 183 | ldr q16, [x9], #16 | |
| 184 | eor v2.16b, v18.16b, v2.16b | |
| 185 | eor v3.16b, v19.16b, v3.16b | |
| 186 | eor v4.16b, v8.16b, v4.16b | |
| 187 | eor v5.16b, v9.16b, v5.16b | |
| 188 | eor v6.16b, v10.16b, v6.16b | |
| 189 | eor v7.16b, v16.16b, v7.16b | |
| 190 | tbl v0.16b, {v0.16b}, v28.16b | |
| 191 | tbl v1.16b, {v1.16b}, v28.16b | |
| 192 | tbl v2.16b, {v2.16b}, v28.16b | |
| 193 | tbl v3.16b, {v3.16b}, v28.16b | |
| 194 | tbl v4.16b, {v4.16b}, v28.16b | |
| 195 | tbl v5.16b, {v5.16b}, v28.16b | |
| 196 | tbl v6.16b, {v6.16b}, v28.16b | |
| 197 | tbl v7.16b, {v7.16b}, v28.16b | |
| 198 | .Ldec_sbox: | |
| 199 | eor v1.16b, v1.16b, v4.16b | |
| 200 | eor v3.16b, v3.16b, v4.16b | |
| 201 | subs x10, x10, #1 | |
| 202 | eor v4.16b, v4.16b, v7.16b | |
| 203 | eor v2.16b, v2.16b, v7.16b | |
| 204 | eor v1.16b, v1.16b, v6.16b | |
| 205 | eor v6.16b, v6.16b, v4.16b | |
| 206 | eor v2.16b, v2.16b, v5.16b | |
| 207 | eor v0.16b, v0.16b, v1.16b | |
| 208 | eor v7.16b, v7.16b, v6.16b | |
| 209 | eor v8.16b, v6.16b, v2.16b | |
| 210 | and v9.16b, v4.16b, v6.16b | |
| 211 | eor v10.16b, v2.16b, v6.16b | |
| 212 | eor v3.16b, v3.16b, v0.16b | |
| 213 | eor v5.16b, v5.16b, v0.16b | |
| 214 | eor v16.16b, v7.16b, v4.16b | |
| 215 | eor v17.16b, v4.16b, v0.16b | |
| 216 | and v18.16b, v0.16b, v2.16b | |
| 217 | eor v19.16b, v7.16b, v4.16b | |
| 218 | eor v1.16b, v1.16b, v3.16b | |
| 219 | eor v20.16b, v3.16b, v0.16b | |
| 220 | eor v21.16b, v5.16b, v2.16b | |
| 221 | eor v22.16b, v3.16b, v7.16b | |
| 222 | and v8.16b, v17.16b, v8.16b | |
| 223 | orr v17.16b, v3.16b, v5.16b | |
| 224 | eor v23.16b, v1.16b, v6.16b | |
| 225 | eor v24.16b, v20.16b, v16.16b | |
| 226 | eor v25.16b, v1.16b, v5.16b | |
| 227 | orr v26.16b, v20.16b, v21.16b | |
| 228 | and v20.16b, v20.16b, v21.16b | |
| 229 | and v27.16b, v7.16b, v1.16b | |
| 230 | eor v21.16b, v21.16b, v23.16b | |
| 231 | orr v28.16b, v16.16b, v23.16b | |
| 232 | orr v29.16b, v22.16b, v25.16b | |
| 233 | eor v26.16b, v26.16b, v8.16b | |
| 234 | and v16.16b, v16.16b, v23.16b | |
| 235 | and v22.16b, v22.16b, v25.16b | |
| 236 | and v21.16b, v24.16b, v21.16b | |
| 237 | eor v8.16b, v28.16b, v8.16b | |
| 238 | eor v23.16b, v5.16b, v2.16b | |
| 239 | eor v24.16b, v1.16b, v6.16b | |
| 240 | eor v16.16b, v16.16b, v22.16b | |
| 241 | eor v22.16b, v3.16b, v0.16b | |
| 242 | eor v25.16b, v29.16b, v21.16b | |
| 243 | eor v21.16b, v26.16b, v21.16b | |
| 244 | eor v8.16b, v8.16b, v20.16b | |
| 245 | eor v26.16b, v23.16b, v24.16b | |
| 246 | eor v16.16b, v16.16b, v20.16b | |
| 247 | eor v28.16b, v22.16b, v19.16b | |
| 248 | eor v20.16b, v25.16b, v20.16b | |
| 249 | eor v9.16b, v21.16b, v9.16b | |
| 250 | eor v8.16b, v8.16b, v18.16b | |
| 251 | eor v18.16b, v5.16b, v1.16b | |
| 252 | eor v21.16b, v16.16b, v17.16b | |
| 253 | eor v16.16b, v16.16b, v17.16b | |
| 254 | eor v17.16b, v20.16b, v27.16b | |
| 255 | eor v20.16b, v3.16b, v7.16b | |
| 256 | eor v25.16b, v9.16b, v8.16b | |
| 257 | eor v27.16b, v0.16b, v4.16b | |
| 258 | and v29.16b, v9.16b, v17.16b | |
| 259 | eor v30.16b, v8.16b, v29.16b | |
| 260 | eor v31.16b, v21.16b, v29.16b | |
| 261 | eor v29.16b, v21.16b, v29.16b | |
| 262 | bsl v30.16b, v17.16b, v21.16b | |
| 263 | bsl v31.16b, v9.16b, v8.16b | |
| 264 | bsl v16.16b, v30.16b, v29.16b | |
| 265 | bsl v21.16b, v29.16b, v30.16b | |
| 266 | eor v8.16b, v31.16b, v30.16b | |
| 267 | and v1.16b, v1.16b, v31.16b | |
| 268 | and v9.16b, v16.16b, v31.16b | |
| 269 | and v6.16b, v6.16b, v30.16b | |
| 270 | eor v16.16b, v17.16b, v21.16b | |
| 271 | and v4.16b, v4.16b, v30.16b | |
| 272 | eor v17.16b, v8.16b, v30.16b | |
| 273 | and v21.16b, v24.16b, v8.16b | |
| 274 | eor v9.16b, v9.16b, v25.16b | |
| 275 | and v19.16b, v19.16b, v8.16b | |
| 276 | eor v24.16b, v30.16b, v16.16b | |
| 277 | eor v25.16b, v30.16b, v16.16b | |
| 278 | and v7.16b, v7.16b, v17.16b | |
| 279 | and v10.16b, v10.16b, v16.16b | |
| 280 | eor v29.16b, v9.16b, v16.16b | |
| 281 | eor v30.16b, v31.16b, v9.16b | |
| 282 | and v0.16b, v24.16b, v0.16b | |
| 283 | and v9.16b, v18.16b, v9.16b | |
| 284 | and v2.16b, v25.16b, v2.16b | |
| 285 | eor v10.16b, v10.16b, v6.16b | |
| 286 | eor v18.16b, v29.16b, v16.16b | |
| 287 | and v5.16b, v30.16b, v5.16b | |
| 288 | eor v24.16b, v8.16b, v29.16b | |
| 289 | and v25.16b, v26.16b, v29.16b | |
| 290 | and v26.16b, v28.16b, v29.16b | |
| 291 | eor v8.16b, v8.16b, v29.16b | |
| 292 | eor v17.16b, v17.16b, v18.16b | |
| 293 | eor v5.16b, v1.16b, v5.16b | |
| 294 | and v23.16b, v24.16b, v23.16b | |
| 295 | eor v21.16b, v21.16b, v25.16b | |
| 296 | eor v19.16b, v19.16b, v26.16b | |
| 297 | eor v0.16b, v4.16b, v0.16b | |
| 298 | and v3.16b, v17.16b, v3.16b | |
| 299 | eor v1.16b, v9.16b, v1.16b | |
| 300 | eor v9.16b, v25.16b, v23.16b | |
| 301 | eor v5.16b, v5.16b, v21.16b | |
| 302 | eor v2.16b, v6.16b, v2.16b | |
| 303 | and v6.16b, v8.16b, v22.16b | |
| 304 | eor v3.16b, v7.16b, v3.16b | |
| 305 | and v8.16b, v20.16b, v18.16b | |
| 306 | eor v10.16b, v10.16b, v9.16b | |
| 307 | eor v0.16b, v0.16b, v19.16b | |
| 308 | eor v9.16b, v1.16b, v9.16b | |
| 309 | eor v1.16b, v2.16b, v21.16b | |
| 310 | eor v3.16b, v3.16b, v19.16b | |
| 311 | and v16.16b, v27.16b, v16.16b | |
| 312 | eor v17.16b, v26.16b, v6.16b | |
| 313 | eor v6.16b, v8.16b, v7.16b | |
| 314 | eor v7.16b, v1.16b, v9.16b | |
| 315 | eor v1.16b, v5.16b, v3.16b | |
| 316 | eor v2.16b, v10.16b, v3.16b | |
| 317 | eor v4.16b, v16.16b, v4.16b | |
| 318 | eor v8.16b, v6.16b, v17.16b | |
| 319 | eor v5.16b, v9.16b, v3.16b | |
| 320 | eor v9.16b, v0.16b, v1.16b | |
| 321 | eor v6.16b, v7.16b, v1.16b | |
| 322 | eor v0.16b, v4.16b, v17.16b | |
| 323 | eor v4.16b, v8.16b, v7.16b | |
| 324 | eor v7.16b, v9.16b, v2.16b | |
| 325 | eor v8.16b, v3.16b, v0.16b | |
| 326 | eor v7.16b, v7.16b, v5.16b | |
| 327 | eor v3.16b, v4.16b, v7.16b | |
| 328 | eor v4.16b, v7.16b, v0.16b | |
| 329 | eor v7.16b, v8.16b, v3.16b | |
| 330 | bcc .Ldec_done | |
| 331 | ext v8.16b, v0.16b, v0.16b, #8 | |
| 332 | ext v9.16b, v1.16b, v1.16b, #8 | |
| 333 | ldr q28, [x11] // load from .LISR in common case (x10 > 0) | |
| 334 | ext v10.16b, v6.16b, v6.16b, #8 | |
| 335 | ext v16.16b, v3.16b, v3.16b, #8 | |
| 336 | ext v17.16b, v5.16b, v5.16b, #8 | |
| 337 | ext v18.16b, v4.16b, v4.16b, #8 | |
| 338 | eor v8.16b, v8.16b, v0.16b | |
| 339 | eor v9.16b, v9.16b, v1.16b | |
| 340 | eor v10.16b, v10.16b, v6.16b | |
| 341 | eor v16.16b, v16.16b, v3.16b | |
| 342 | eor v17.16b, v17.16b, v5.16b | |
| 343 | ext v19.16b, v2.16b, v2.16b, #8 | |
| 344 | ext v20.16b, v7.16b, v7.16b, #8 | |
| 345 | eor v18.16b, v18.16b, v4.16b | |
| 346 | eor v6.16b, v6.16b, v8.16b | |
| 347 | eor v8.16b, v2.16b, v10.16b | |
| 348 | eor v4.16b, v4.16b, v9.16b | |
| 349 | eor v2.16b, v19.16b, v2.16b | |
| 350 | eor v9.16b, v20.16b, v7.16b | |
| 351 | eor v0.16b, v0.16b, v16.16b | |
| 352 | eor v1.16b, v1.16b, v16.16b | |
| 353 | eor v6.16b, v6.16b, v17.16b | |
| 354 | eor v8.16b, v8.16b, v16.16b | |
| 355 | eor v7.16b, v7.16b, v18.16b | |
| 356 | eor v4.16b, v4.16b, v16.16b | |
| 357 | eor v2.16b, v3.16b, v2.16b | |
| 358 | eor v1.16b, v1.16b, v17.16b | |
| 359 | eor v3.16b, v5.16b, v9.16b | |
| 360 | eor v5.16b, v8.16b, v17.16b | |
| 361 | eor v7.16b, v7.16b, v17.16b | |
| 362 | ext v8.16b, v0.16b, v0.16b, #12 | |
| 363 | ext v9.16b, v6.16b, v6.16b, #12 | |
| 364 | ext v10.16b, v4.16b, v4.16b, #12 | |
| 365 | ext v16.16b, v1.16b, v1.16b, #12 | |
| 366 | ext v17.16b, v5.16b, v5.16b, #12 | |
| 367 | ext v18.16b, v7.16b, v7.16b, #12 | |
| 368 | eor v0.16b, v0.16b, v8.16b | |
| 369 | eor v6.16b, v6.16b, v9.16b | |
| 370 | eor v4.16b, v4.16b, v10.16b | |
| 371 | ext v19.16b, v2.16b, v2.16b, #12 | |
| 372 | ext v20.16b, v3.16b, v3.16b, #12 | |
| 373 | eor v1.16b, v1.16b, v16.16b | |
| 374 | eor v5.16b, v5.16b, v17.16b | |
| 375 | eor v7.16b, v7.16b, v18.16b | |
| 376 | eor v2.16b, v2.16b, v19.16b | |
| 377 | eor v16.16b, v16.16b, v0.16b | |
| 378 | eor v3.16b, v3.16b, v20.16b | |
| 379 | eor v17.16b, v17.16b, v4.16b | |
| 380 | eor v10.16b, v10.16b, v6.16b | |
| 381 | ext v0.16b, v0.16b, v0.16b, #8 | |
| 382 | eor v9.16b, v9.16b, v1.16b | |
| 383 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 384 | eor v8.16b, v8.16b, v3.16b | |
| 385 | eor v16.16b, v16.16b, v3.16b | |
| 386 | eor v18.16b, v18.16b, v5.16b | |
| 387 | eor v19.16b, v19.16b, v7.16b | |
| 388 | ext v21.16b, v5.16b, v5.16b, #8 | |
| 389 | ext v5.16b, v7.16b, v7.16b, #8 | |
| 390 | eor v7.16b, v20.16b, v2.16b | |
| 391 | ext v4.16b, v4.16b, v4.16b, #8 | |
| 392 | ext v20.16b, v3.16b, v3.16b, #8 | |
| 393 | eor v17.16b, v17.16b, v3.16b | |
| 394 | ext v2.16b, v2.16b, v2.16b, #8 | |
| 395 | eor v3.16b, v10.16b, v3.16b | |
| 396 | ext v10.16b, v6.16b, v6.16b, #8 | |
| 397 | eor v0.16b, v0.16b, v8.16b | |
| 398 | eor v1.16b, v1.16b, v16.16b | |
| 399 | eor v5.16b, v5.16b, v18.16b | |
| 400 | eor v3.16b, v3.16b, v4.16b | |
| 401 | eor v7.16b, v20.16b, v7.16b | |
| 402 | eor v6.16b, v2.16b, v19.16b | |
| 403 | eor v4.16b, v21.16b, v17.16b | |
| 404 | eor v2.16b, v10.16b, v9.16b | |
| 405 | bne .Ldec_loop | |
| 406 | ldr q28, [x11, #16]! // load from .LISRM0 on last round (x10 == 0) | |
| 407 | b .Ldec_loop | |
| 408 | .align 4 | |
| 409 | .Ldec_done: | |
| 410 | ushr v8.2d, v0.2d, #1 | |
| 411 | movi v9.16b, #0x55 | |
| 412 | ldr q10, [x9] | |
| 413 | ushr v16.2d, v2.2d, #1 | |
| 414 | movi v17.16b, #0x33 | |
| 415 | ushr v18.2d, v6.2d, #1 | |
| 416 | movi v19.16b, #0x0f | |
| 417 | eor v8.16b, v8.16b, v1.16b | |
| 418 | ushr v20.2d, v3.2d, #1 | |
| 419 | eor v16.16b, v16.16b, v7.16b | |
| 420 | eor v18.16b, v18.16b, v4.16b | |
| 421 | and v8.16b, v8.16b, v9.16b | |
| 422 | eor v20.16b, v20.16b, v5.16b | |
| 423 | and v16.16b, v16.16b, v9.16b | |
| 424 | and v18.16b, v18.16b, v9.16b | |
| 425 | shl v21.2d, v8.2d, #1 | |
| 426 | eor v1.16b, v1.16b, v8.16b | |
| 427 | and v8.16b, v20.16b, v9.16b | |
| 428 | eor v7.16b, v7.16b, v16.16b | |
| 429 | shl v9.2d, v16.2d, #1 | |
| 430 | eor v4.16b, v4.16b, v18.16b | |
| 431 | shl v16.2d, v18.2d, #1 | |
| 432 | eor v0.16b, v0.16b, v21.16b | |
| 433 | shl v18.2d, v8.2d, #1 | |
| 434 | eor v5.16b, v5.16b, v8.16b | |
| 435 | eor v2.16b, v2.16b, v9.16b | |
| 436 | eor v6.16b, v6.16b, v16.16b | |
| 437 | ushr v8.2d, v1.2d, #2 | |
| 438 | eor v3.16b, v3.16b, v18.16b | |
| 439 | ushr v9.2d, v0.2d, #2 | |
| 440 | ushr v16.2d, v7.2d, #2 | |
| 441 | ushr v18.2d, v2.2d, #2 | |
| 442 | eor v8.16b, v8.16b, v4.16b | |
| 443 | eor v9.16b, v9.16b, v6.16b | |
| 444 | eor v16.16b, v16.16b, v5.16b | |
| 445 | eor v18.16b, v18.16b, v3.16b | |
| 446 | and v8.16b, v8.16b, v17.16b | |
| 447 | and v9.16b, v9.16b, v17.16b | |
| 448 | and v16.16b, v16.16b, v17.16b | |
| 449 | and v17.16b, v18.16b, v17.16b | |
| 450 | eor v4.16b, v4.16b, v8.16b | |
| 451 | shl v8.2d, v8.2d, #2 | |
| 452 | eor v6.16b, v6.16b, v9.16b | |
| 453 | shl v9.2d, v9.2d, #2 | |
| 454 | eor v5.16b, v5.16b, v16.16b | |
| 455 | shl v16.2d, v16.2d, #2 | |
| 456 | eor v3.16b, v3.16b, v17.16b | |
| 457 | shl v17.2d, v17.2d, #2 | |
| 458 | eor v1.16b, v1.16b, v8.16b | |
| 459 | eor v0.16b, v0.16b, v9.16b | |
| 460 | eor v7.16b, v7.16b, v16.16b | |
| 461 | eor v2.16b, v2.16b, v17.16b | |
| 462 | ushr v8.2d, v4.2d, #4 | |
| 463 | ushr v9.2d, v6.2d, #4 | |
| 464 | ushr v16.2d, v1.2d, #4 | |
| 465 | ushr v17.2d, v0.2d, #4 | |
| 466 | eor v8.16b, v8.16b, v5.16b | |
| 467 | eor v9.16b, v9.16b, v3.16b | |
| 468 | eor v16.16b, v16.16b, v7.16b | |
| 469 | eor v17.16b, v17.16b, v2.16b | |
| 470 | and v8.16b, v8.16b, v19.16b | |
| 471 | and v9.16b, v9.16b, v19.16b | |
| 472 | and v16.16b, v16.16b, v19.16b | |
| 473 | and v17.16b, v17.16b, v19.16b | |
| 474 | eor v5.16b, v5.16b, v8.16b | |
| 475 | shl v8.2d, v8.2d, #4 | |
| 476 | eor v3.16b, v3.16b, v9.16b | |
| 477 | shl v9.2d, v9.2d, #4 | |
| 478 | eor v7.16b, v7.16b, v16.16b | |
| 479 | shl v16.2d, v16.2d, #4 | |
| 480 | eor v2.16b, v2.16b, v17.16b | |
| 481 | shl v17.2d, v17.2d, #4 | |
| 482 | eor v4.16b, v4.16b, v8.16b | |
| 483 | eor v6.16b, v6.16b, v9.16b | |
| 484 | eor v7.16b, v7.16b, v10.16b | |
| 485 | eor v1.16b, v1.16b, v16.16b | |
| 486 | eor v2.16b, v2.16b, v10.16b | |
| 487 | eor v0.16b, v0.16b, v17.16b | |
| 488 | eor v4.16b, v4.16b, v10.16b | |
| 489 | eor v6.16b, v6.16b, v10.16b | |
| 490 | eor v3.16b, v3.16b, v10.16b | |
| 491 | eor v5.16b, v5.16b, v10.16b | |
| 492 | eor v1.16b, v1.16b, v10.16b | |
| 493 | eor v0.16b, v0.16b, v10.16b | |
| 494 | ret | |
| 495 | .size _bsaes_decrypt8,.-_bsaes_decrypt8 | |
| 496 | ||
| 497 | .type _bsaes_const,%object | |
| 498 | .align 6 | |
| 499 | _bsaes_const: | |
| 500 | // InvShiftRows constants | |
| 501 | // Used in _bsaes_decrypt8, which assumes contiguity | |
| 502 | // .LM0ISR used with round 0 key | |
| 503 | // .LISR used with middle round keys | |
| 504 | // .LISRM0 used with final round key | |
| 505 | .LM0ISR: | |
| 506 | .quad 0x0a0e0206070b0f03, 0x0004080c0d010509 | |
| 507 | .LISR: | |
| 508 | .quad 0x0504070602010003, 0x0f0e0d0c080b0a09 | |
| 509 | .LISRM0: | |
| 510 | .quad 0x01040b0e0205080f, 0x0306090c00070a0d | |
| 511 | ||
| 512 | // ShiftRows constants | |
| 513 | // Used in _bsaes_encrypt8, which assumes contiguity | |
| 514 | // .LM0SR used with round 0 key | |
| 515 | // .LSR used with middle round keys | |
| 516 | // .LSRM0 used with final round key | |
| 517 | .LM0SR: | |
| 518 | .quad 0x0a0e02060f03070b, 0x0004080c05090d01 | |
| 519 | .LSR: | |
| 520 | .quad 0x0504070600030201, 0x0f0e0d0c0a09080b | |
| 521 | .LSRM0: | |
| 522 | .quad 0x0304090e00050a0f, 0x01060b0c0207080d | |
| 523 | ||
| 524 | .LM0_bigendian: | |
| 525 | .quad 0x02060a0e03070b0f, 0x0004080c0105090d | |
| 526 | .LM0_littleendian: | |
| 527 | .quad 0x0105090d0004080c, 0x03070b0f02060a0e | |
| 528 | ||
| 529 | // Used in ossl_bsaes_ctr32_encrypt_blocks, prior to dropping into | |
| 530 | // _bsaes_encrypt8_alt, for round 0 key in place of .LM0SR | |
| 531 | .LREVM0SR: | |
| 532 | .quad 0x090d01050c000408, 0x03070b0f060a0e02 | |
| 533 | ||
| 534 | .align 6 | |
| 535 | .size _bsaes_const,.-_bsaes_const | |
| 536 | ||
| 537 | .type _bsaes_encrypt8,%function | |
| 538 | .align 4 | |
| 539 | // On entry: | |
| 540 | // x9 -> key (previously expanded using _bsaes_key_convert) | |
| 541 | // x10 = number of rounds | |
| 542 | // v0-v7 input data | |
| 543 | // On exit: | |
| 544 | // x9-x11 corrupted | |
| 545 | // other general-purpose registers preserved | |
| 546 | // v0-v7 output data | |
| 547 | // v11-v15 preserved | |
| 548 | // other SIMD registers corrupted | |
| 549 | _bsaes_encrypt8: | |
| 550 | ldr q8, [x9], #16 | |
| 551 | adr x11, .LM0SR | |
| 552 | ldr q9, [x11], #16 | |
| 553 | _bsaes_encrypt8_alt: | |
| 554 | eor v0.16b, v0.16b, v8.16b | |
| 555 | eor v1.16b, v1.16b, v8.16b | |
| 556 | sub x10, x10, #1 | |
| 557 | eor v2.16b, v2.16b, v8.16b | |
| 558 | eor v4.16b, v4.16b, v8.16b | |
| 559 | eor v3.16b, v3.16b, v8.16b | |
| 560 | eor v5.16b, v5.16b, v8.16b | |
| 561 | tbl v0.16b, {v0.16b}, v9.16b | |
| 562 | tbl v1.16b, {v1.16b}, v9.16b | |
| 563 | tbl v2.16b, {v2.16b}, v9.16b | |
| 564 | tbl v4.16b, {v4.16b}, v9.16b | |
| 565 | eor v6.16b, v6.16b, v8.16b | |
| 566 | eor v7.16b, v7.16b, v8.16b | |
| 567 | tbl v3.16b, {v3.16b}, v9.16b | |
| 568 | tbl v5.16b, {v5.16b}, v9.16b | |
| 569 | tbl v6.16b, {v6.16b}, v9.16b | |
| 570 | ushr v8.2d, v0.2d, #1 | |
| 571 | movi v10.16b, #0x55 | |
| 572 | tbl v7.16b, {v7.16b}, v9.16b | |
| 573 | ushr v9.2d, v4.2d, #1 | |
| 574 | movi v16.16b, #0x33 | |
| 575 | ushr v17.2d, v2.2d, #1 | |
| 576 | eor v8.16b, v8.16b, v1.16b | |
| 577 | movi v18.16b, #0x0f | |
| 578 | ushr v19.2d, v6.2d, #1 | |
| 579 | eor v9.16b, v9.16b, v5.16b | |
| 580 | eor v17.16b, v17.16b, v3.16b | |
| 581 | and v8.16b, v8.16b, v10.16b | |
| 582 | eor v19.16b, v19.16b, v7.16b | |
| 583 | and v9.16b, v9.16b, v10.16b | |
| 584 | and v17.16b, v17.16b, v10.16b | |
| 585 | eor v1.16b, v1.16b, v8.16b | |
| 586 | shl v8.2d, v8.2d, #1 | |
| 587 | and v10.16b, v19.16b, v10.16b | |
| 588 | eor v5.16b, v5.16b, v9.16b | |
| 589 | shl v9.2d, v9.2d, #1 | |
| 590 | eor v3.16b, v3.16b, v17.16b | |
| 591 | shl v17.2d, v17.2d, #1 | |
| 592 | eor v0.16b, v0.16b, v8.16b | |
| 593 | shl v8.2d, v10.2d, #1 | |
| 594 | eor v7.16b, v7.16b, v10.16b | |
| 595 | eor v4.16b, v4.16b, v9.16b | |
| 596 | eor v2.16b, v2.16b, v17.16b | |
| 597 | ushr v9.2d, v1.2d, #2 | |
| 598 | eor v6.16b, v6.16b, v8.16b | |
| 599 | ushr v8.2d, v0.2d, #2 | |
| 600 | ushr v10.2d, v5.2d, #2 | |
| 601 | ushr v17.2d, v4.2d, #2 | |
| 602 | eor v9.16b, v9.16b, v3.16b | |
| 603 | eor v8.16b, v8.16b, v2.16b | |
| 604 | eor v10.16b, v10.16b, v7.16b | |
| 605 | eor v17.16b, v17.16b, v6.16b | |
| 606 | and v9.16b, v9.16b, v16.16b | |
| 607 | and v8.16b, v8.16b, v16.16b | |
| 608 | and v10.16b, v10.16b, v16.16b | |
| 609 | and v16.16b, v17.16b, v16.16b | |
| 610 | eor v3.16b, v3.16b, v9.16b | |
| 611 | shl v9.2d, v9.2d, #2 | |
| 612 | eor v2.16b, v2.16b, v8.16b | |
| 613 | shl v8.2d, v8.2d, #2 | |
| 614 | eor v7.16b, v7.16b, v10.16b | |
| 615 | shl v10.2d, v10.2d, #2 | |
| 616 | eor v6.16b, v6.16b, v16.16b | |
| 617 | shl v16.2d, v16.2d, #2 | |
| 618 | eor v1.16b, v1.16b, v9.16b | |
| 619 | eor v0.16b, v0.16b, v8.16b | |
| 620 | eor v5.16b, v5.16b, v10.16b | |
| 621 | eor v4.16b, v4.16b, v16.16b | |
| 622 | ushr v8.2d, v3.2d, #4 | |
| 623 | ushr v9.2d, v2.2d, #4 | |
| 624 | ushr v10.2d, v1.2d, #4 | |
| 625 | ushr v16.2d, v0.2d, #4 | |
| 626 | eor v8.16b, v8.16b, v7.16b | |
| 627 | eor v9.16b, v9.16b, v6.16b | |
| 628 | eor v10.16b, v10.16b, v5.16b | |
| 629 | eor v16.16b, v16.16b, v4.16b | |
| 630 | and v8.16b, v8.16b, v18.16b | |
| 631 | and v9.16b, v9.16b, v18.16b | |
| 632 | and v10.16b, v10.16b, v18.16b | |
| 633 | and v16.16b, v16.16b, v18.16b | |
| 634 | eor v7.16b, v7.16b, v8.16b | |
| 635 | shl v8.2d, v8.2d, #4 | |
| 636 | eor v6.16b, v6.16b, v9.16b | |
| 637 | shl v9.2d, v9.2d, #4 | |
| 638 | eor v5.16b, v5.16b, v10.16b | |
| 639 | shl v10.2d, v10.2d, #4 | |
| 640 | eor v4.16b, v4.16b, v16.16b | |
| 641 | shl v16.2d, v16.2d, #4 | |
| 642 | eor v3.16b, v3.16b, v8.16b | |
| 643 | eor v2.16b, v2.16b, v9.16b | |
| 644 | eor v1.16b, v1.16b, v10.16b | |
| 645 | eor v0.16b, v0.16b, v16.16b | |
| 646 | b .Lenc_sbox | |
| 647 | .align 4 | |
| 648 | .Lenc_loop: | |
| 649 | ld1 {v16.16b, v17.16b, v18.16b, v19.16b}, [x9], #64 | |
| 650 | ldp q8, q9, [x9], #32 | |
| 651 | eor v0.16b, v16.16b, v0.16b | |
| 652 | ldr q10, [x9], #16 | |
| 653 | eor v1.16b, v17.16b, v1.16b | |
| 654 | ldr q16, [x9], #16 | |
| 655 | eor v2.16b, v18.16b, v2.16b | |
| 656 | eor v3.16b, v19.16b, v3.16b | |
| 657 | eor v4.16b, v8.16b, v4.16b | |
| 658 | eor v5.16b, v9.16b, v5.16b | |
| 659 | eor v6.16b, v10.16b, v6.16b | |
| 660 | eor v7.16b, v16.16b, v7.16b | |
| 661 | tbl v0.16b, {v0.16b}, v28.16b | |
| 662 | tbl v1.16b, {v1.16b}, v28.16b | |
| 663 | tbl v2.16b, {v2.16b}, v28.16b | |
| 664 | tbl v3.16b, {v3.16b}, v28.16b | |
| 665 | tbl v4.16b, {v4.16b}, v28.16b | |
| 666 | tbl v5.16b, {v5.16b}, v28.16b | |
| 667 | tbl v6.16b, {v6.16b}, v28.16b | |
| 668 | tbl v7.16b, {v7.16b}, v28.16b | |
| 669 | .Lenc_sbox: | |
| 670 | eor v5.16b, v5.16b, v6.16b | |
| 671 | eor v3.16b, v3.16b, v0.16b | |
| 672 | subs x10, x10, #1 | |
| 673 | eor v2.16b, v2.16b, v1.16b | |
| 674 | eor v5.16b, v5.16b, v0.16b | |
| 675 | eor v8.16b, v3.16b, v7.16b | |
| 676 | eor v6.16b, v6.16b, v2.16b | |
| 677 | eor v7.16b, v7.16b, v5.16b | |
| 678 | eor v8.16b, v8.16b, v4.16b | |
| 679 | eor v3.16b, v6.16b, v3.16b | |
| 680 | eor v4.16b, v4.16b, v5.16b | |
| 681 | eor v6.16b, v1.16b, v5.16b | |
| 682 | eor v2.16b, v2.16b, v7.16b | |
| 683 | eor v1.16b, v8.16b, v1.16b | |
| 684 | eor v8.16b, v7.16b, v4.16b | |
| 685 | eor v9.16b, v3.16b, v0.16b | |
| 686 | eor v10.16b, v7.16b, v6.16b | |
| 687 | eor v16.16b, v5.16b, v3.16b | |
| 688 | eor v17.16b, v6.16b, v2.16b | |
| 689 | eor v18.16b, v5.16b, v1.16b | |
| 690 | eor v19.16b, v2.16b, v4.16b | |
| 691 | eor v20.16b, v1.16b, v0.16b | |
| 692 | orr v21.16b, v8.16b, v9.16b | |
| 693 | orr v22.16b, v10.16b, v16.16b | |
| 694 | eor v23.16b, v8.16b, v17.16b | |
| 695 | eor v24.16b, v9.16b, v18.16b | |
| 696 | and v19.16b, v19.16b, v20.16b | |
| 697 | orr v20.16b, v17.16b, v18.16b | |
| 698 | and v8.16b, v8.16b, v9.16b | |
| 699 | and v9.16b, v17.16b, v18.16b | |
| 700 | and v17.16b, v23.16b, v24.16b | |
| 701 | and v10.16b, v10.16b, v16.16b | |
| 702 | eor v16.16b, v21.16b, v19.16b | |
| 703 | eor v18.16b, v20.16b, v19.16b | |
| 704 | and v19.16b, v2.16b, v1.16b | |
| 705 | and v20.16b, v6.16b, v5.16b | |
| 706 | eor v21.16b, v22.16b, v17.16b | |
| 707 | eor v9.16b, v9.16b, v10.16b | |
| 708 | eor v10.16b, v16.16b, v17.16b | |
| 709 | eor v16.16b, v18.16b, v8.16b | |
| 710 | and v17.16b, v4.16b, v0.16b | |
| 711 | orr v18.16b, v7.16b, v3.16b | |
| 712 | eor v21.16b, v21.16b, v8.16b | |
| 713 | eor v8.16b, v9.16b, v8.16b | |
| 714 | eor v9.16b, v10.16b, v19.16b | |
| 715 | eor v10.16b, v3.16b, v0.16b | |
| 716 | eor v16.16b, v16.16b, v17.16b | |
| 717 | eor v17.16b, v5.16b, v1.16b | |
| 718 | eor v19.16b, v21.16b, v20.16b | |
| 719 | eor v20.16b, v8.16b, v18.16b | |
| 720 | eor v8.16b, v8.16b, v18.16b | |
| 721 | eor v18.16b, v7.16b, v4.16b | |
| 722 | eor v21.16b, v9.16b, v16.16b | |
| 723 | eor v22.16b, v6.16b, v2.16b | |
| 724 | and v23.16b, v9.16b, v19.16b | |
| 725 | eor v24.16b, v10.16b, v17.16b | |
| 726 | eor v25.16b, v0.16b, v1.16b | |
| 727 | eor v26.16b, v7.16b, v6.16b | |
| 728 | eor v27.16b, v18.16b, v22.16b | |
| 729 | eor v28.16b, v3.16b, v5.16b | |
| 730 | eor v29.16b, v16.16b, v23.16b | |
| 731 | eor v30.16b, v20.16b, v23.16b | |
| 732 | eor v23.16b, v20.16b, v23.16b | |
| 733 | eor v31.16b, v4.16b, v2.16b | |
| 734 | bsl v29.16b, v19.16b, v20.16b | |
| 735 | bsl v30.16b, v9.16b, v16.16b | |
| 736 | bsl v8.16b, v29.16b, v23.16b | |
| 737 | bsl v20.16b, v23.16b, v29.16b | |
| 738 | eor v9.16b, v30.16b, v29.16b | |
| 739 | and v5.16b, v5.16b, v30.16b | |
| 740 | and v8.16b, v8.16b, v30.16b | |
| 741 | and v1.16b, v1.16b, v29.16b | |
| 742 | eor v16.16b, v19.16b, v20.16b | |
| 743 | and v2.16b, v2.16b, v29.16b | |
| 744 | eor v19.16b, v9.16b, v29.16b | |
| 745 | and v17.16b, v17.16b, v9.16b | |
| 746 | eor v8.16b, v8.16b, v21.16b | |
| 747 | and v20.16b, v22.16b, v9.16b | |
| 748 | eor v21.16b, v29.16b, v16.16b | |
| 749 | eor v22.16b, v29.16b, v16.16b | |
| 750 | and v23.16b, v25.16b, v16.16b | |
| 751 | and v6.16b, v6.16b, v19.16b | |
| 752 | eor v25.16b, v8.16b, v16.16b | |
| 753 | eor v29.16b, v30.16b, v8.16b | |
| 754 | and v4.16b, v21.16b, v4.16b | |
| 755 | and v8.16b, v28.16b, v8.16b | |
| 756 | and v0.16b, v22.16b, v0.16b | |
| 757 | eor v21.16b, v23.16b, v1.16b | |
| 758 | eor v22.16b, v9.16b, v25.16b | |
| 759 | eor v9.16b, v9.16b, v25.16b | |
| 760 | eor v23.16b, v25.16b, v16.16b | |
| 761 | and v3.16b, v29.16b, v3.16b | |
| 762 | and v24.16b, v24.16b, v25.16b | |
| 763 | and v25.16b, v27.16b, v25.16b | |
| 764 | and v10.16b, v22.16b, v10.16b | |
| 765 | and v9.16b, v9.16b, v18.16b | |
| 766 | eor v18.16b, v19.16b, v23.16b | |
| 767 | and v19.16b, v26.16b, v23.16b | |
| 768 | eor v3.16b, v5.16b, v3.16b | |
| 769 | eor v17.16b, v17.16b, v24.16b | |
| 770 | eor v10.16b, v24.16b, v10.16b | |
| 771 | and v16.16b, v31.16b, v16.16b | |
| 772 | eor v20.16b, v20.16b, v25.16b | |
| 773 | eor v9.16b, v25.16b, v9.16b | |
| 774 | eor v4.16b, v2.16b, v4.16b | |
| 775 | and v7.16b, v18.16b, v7.16b | |
| 776 | eor v18.16b, v19.16b, v6.16b | |
| 777 | eor v5.16b, v8.16b, v5.16b | |
| 778 | eor v0.16b, v1.16b, v0.16b | |
| 779 | eor v1.16b, v21.16b, v10.16b | |
| 780 | eor v8.16b, v3.16b, v17.16b | |
| 781 | eor v2.16b, v16.16b, v2.16b | |
| 782 | eor v3.16b, v6.16b, v7.16b | |
| 783 | eor v6.16b, v18.16b, v9.16b | |
| 784 | eor v4.16b, v4.16b, v20.16b | |
| 785 | eor v10.16b, v5.16b, v10.16b | |
| 786 | eor v0.16b, v0.16b, v17.16b | |
| 787 | eor v9.16b, v2.16b, v9.16b | |
| 788 | eor v3.16b, v3.16b, v20.16b | |
| 789 | eor v7.16b, v6.16b, v1.16b | |
| 790 | eor v5.16b, v8.16b, v4.16b | |
| 791 | eor v6.16b, v10.16b, v1.16b | |
| 792 | eor v2.16b, v4.16b, v0.16b | |
| 793 | eor v4.16b, v3.16b, v10.16b | |
| 794 | eor v9.16b, v9.16b, v7.16b | |
| 795 | eor v3.16b, v0.16b, v5.16b | |
| 796 | eor v0.16b, v1.16b, v4.16b | |
| 797 | eor v1.16b, v4.16b, v8.16b | |
| 798 | eor v4.16b, v9.16b, v5.16b | |
| 799 | eor v6.16b, v6.16b, v3.16b | |
| 800 | bcc .Lenc_done | |
| 801 | ext v8.16b, v0.16b, v0.16b, #12 | |
| 802 | ext v9.16b, v4.16b, v4.16b, #12 | |
| 803 | ldr q28, [x11] | |
| 804 | ext v10.16b, v6.16b, v6.16b, #12 | |
| 805 | ext v16.16b, v1.16b, v1.16b, #12 | |
| 806 | ext v17.16b, v3.16b, v3.16b, #12 | |
| 807 | ext v18.16b, v7.16b, v7.16b, #12 | |
| 808 | eor v0.16b, v0.16b, v8.16b | |
| 809 | eor v4.16b, v4.16b, v9.16b | |
| 810 | eor v6.16b, v6.16b, v10.16b | |
| 811 | ext v19.16b, v2.16b, v2.16b, #12 | |
| 812 | ext v20.16b, v5.16b, v5.16b, #12 | |
| 813 | eor v1.16b, v1.16b, v16.16b | |
| 814 | eor v3.16b, v3.16b, v17.16b | |
| 815 | eor v7.16b, v7.16b, v18.16b | |
| 816 | eor v2.16b, v2.16b, v19.16b | |
| 817 | eor v16.16b, v16.16b, v0.16b | |
| 818 | eor v5.16b, v5.16b, v20.16b | |
| 819 | eor v17.16b, v17.16b, v6.16b | |
| 820 | eor v10.16b, v10.16b, v4.16b | |
| 821 | ext v0.16b, v0.16b, v0.16b, #8 | |
| 822 | eor v9.16b, v9.16b, v1.16b | |
| 823 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 824 | eor v8.16b, v8.16b, v5.16b | |
| 825 | eor v16.16b, v16.16b, v5.16b | |
| 826 | eor v18.16b, v18.16b, v3.16b | |
| 827 | eor v19.16b, v19.16b, v7.16b | |
| 828 | ext v3.16b, v3.16b, v3.16b, #8 | |
| 829 | ext v7.16b, v7.16b, v7.16b, #8 | |
| 830 | eor v20.16b, v20.16b, v2.16b | |
| 831 | ext v6.16b, v6.16b, v6.16b, #8 | |
| 832 | ext v21.16b, v5.16b, v5.16b, #8 | |
| 833 | eor v17.16b, v17.16b, v5.16b | |
| 834 | ext v2.16b, v2.16b, v2.16b, #8 | |
| 835 | eor v10.16b, v10.16b, v5.16b | |
| 836 | ext v22.16b, v4.16b, v4.16b, #8 | |
| 837 | eor v0.16b, v0.16b, v8.16b | |
| 838 | eor v1.16b, v1.16b, v16.16b | |
| 839 | eor v5.16b, v7.16b, v18.16b | |
| 840 | eor v4.16b, v3.16b, v17.16b | |
| 841 | eor v3.16b, v6.16b, v10.16b | |
| 842 | eor v7.16b, v21.16b, v20.16b | |
| 843 | eor v6.16b, v2.16b, v19.16b | |
| 844 | eor v2.16b, v22.16b, v9.16b | |
| 845 | bne .Lenc_loop | |
| 846 | ldr q28, [x11, #16]! // load from .LSRM0 on last round (x10 == 0) | |
| 847 | b .Lenc_loop | |
| 848 | .align 4 | |
| 849 | .Lenc_done: | |
| 850 | ushr v8.2d, v0.2d, #1 | |
| 851 | movi v9.16b, #0x55 | |
| 852 | ldr q10, [x9] | |
| 853 | ushr v16.2d, v3.2d, #1 | |
| 854 | movi v17.16b, #0x33 | |
| 855 | ushr v18.2d, v4.2d, #1 | |
| 856 | movi v19.16b, #0x0f | |
| 857 | eor v8.16b, v8.16b, v1.16b | |
| 858 | ushr v20.2d, v2.2d, #1 | |
| 859 | eor v16.16b, v16.16b, v7.16b | |
| 860 | eor v18.16b, v18.16b, v6.16b | |
| 861 | and v8.16b, v8.16b, v9.16b | |
| 862 | eor v20.16b, v20.16b, v5.16b | |
| 863 | and v16.16b, v16.16b, v9.16b | |
| 864 | and v18.16b, v18.16b, v9.16b | |
| 865 | shl v21.2d, v8.2d, #1 | |
| 866 | eor v1.16b, v1.16b, v8.16b | |
| 867 | and v8.16b, v20.16b, v9.16b | |
| 868 | eor v7.16b, v7.16b, v16.16b | |
| 869 | shl v9.2d, v16.2d, #1 | |
| 870 | eor v6.16b, v6.16b, v18.16b | |
| 871 | shl v16.2d, v18.2d, #1 | |
| 872 | eor v0.16b, v0.16b, v21.16b | |
| 873 | shl v18.2d, v8.2d, #1 | |
| 874 | eor v5.16b, v5.16b, v8.16b | |
| 875 | eor v3.16b, v3.16b, v9.16b | |
| 876 | eor v4.16b, v4.16b, v16.16b | |
| 877 | ushr v8.2d, v1.2d, #2 | |
| 878 | eor v2.16b, v2.16b, v18.16b | |
| 879 | ushr v9.2d, v0.2d, #2 | |
| 880 | ushr v16.2d, v7.2d, #2 | |
| 881 | ushr v18.2d, v3.2d, #2 | |
| 882 | eor v8.16b, v8.16b, v6.16b | |
| 883 | eor v9.16b, v9.16b, v4.16b | |
| 884 | eor v16.16b, v16.16b, v5.16b | |
| 885 | eor v18.16b, v18.16b, v2.16b | |
| 886 | and v8.16b, v8.16b, v17.16b | |
| 887 | and v9.16b, v9.16b, v17.16b | |
| 888 | and v16.16b, v16.16b, v17.16b | |
| 889 | and v17.16b, v18.16b, v17.16b | |
| 890 | eor v6.16b, v6.16b, v8.16b | |
| 891 | shl v8.2d, v8.2d, #2 | |
| 892 | eor v4.16b, v4.16b, v9.16b | |
| 893 | shl v9.2d, v9.2d, #2 | |
| 894 | eor v5.16b, v5.16b, v16.16b | |
| 895 | shl v16.2d, v16.2d, #2 | |
| 896 | eor v2.16b, v2.16b, v17.16b | |
| 897 | shl v17.2d, v17.2d, #2 | |
| 898 | eor v1.16b, v1.16b, v8.16b | |
| 899 | eor v0.16b, v0.16b, v9.16b | |
| 900 | eor v7.16b, v7.16b, v16.16b | |
| 901 | eor v3.16b, v3.16b, v17.16b | |
| 902 | ushr v8.2d, v6.2d, #4 | |
| 903 | ushr v9.2d, v4.2d, #4 | |
| 904 | ushr v16.2d, v1.2d, #4 | |
| 905 | ushr v17.2d, v0.2d, #4 | |
| 906 | eor v8.16b, v8.16b, v5.16b | |
| 907 | eor v9.16b, v9.16b, v2.16b | |
| 908 | eor v16.16b, v16.16b, v7.16b | |
| 909 | eor v17.16b, v17.16b, v3.16b | |
| 910 | and v8.16b, v8.16b, v19.16b | |
| 911 | and v9.16b, v9.16b, v19.16b | |
| 912 | and v16.16b, v16.16b, v19.16b | |
| 913 | and v17.16b, v17.16b, v19.16b | |
| 914 | eor v5.16b, v5.16b, v8.16b | |
| 915 | shl v8.2d, v8.2d, #4 | |
| 916 | eor v2.16b, v2.16b, v9.16b | |
| 917 | shl v9.2d, v9.2d, #4 | |
| 918 | eor v7.16b, v7.16b, v16.16b | |
| 919 | shl v16.2d, v16.2d, #4 | |
| 920 | eor v3.16b, v3.16b, v17.16b | |
| 921 | shl v17.2d, v17.2d, #4 | |
| 922 | eor v6.16b, v6.16b, v8.16b | |
| 923 | eor v4.16b, v4.16b, v9.16b | |
| 924 | eor v7.16b, v7.16b, v10.16b | |
| 925 | eor v1.16b, v1.16b, v16.16b | |
| 926 | eor v3.16b, v3.16b, v10.16b | |
| 927 | eor v0.16b, v0.16b, v17.16b | |
| 928 | eor v6.16b, v6.16b, v10.16b | |
| 929 | eor v4.16b, v4.16b, v10.16b | |
| 930 | eor v2.16b, v2.16b, v10.16b | |
| 931 | eor v5.16b, v5.16b, v10.16b | |
| 932 | eor v1.16b, v1.16b, v10.16b | |
| 933 | eor v0.16b, v0.16b, v10.16b | |
| 934 | ret | |
| 935 | .size _bsaes_encrypt8,.-_bsaes_encrypt8 | |
| 936 | ||
| 937 | .type _bsaes_key_convert,%function | |
| 938 | .align 4 | |
| 939 | // On entry: | |
| 940 | // x9 -> input key (big-endian) | |
| 941 | // x10 = number of rounds | |
| 942 | // x17 -> output key (native endianness) | |
| 943 | // On exit: | |
| 944 | // x9, x10 corrupted | |
| 945 | // x11 -> .LM0_bigendian | |
| 946 | // x17 -> last quadword of output key | |
| 947 | // other general-purpose registers preserved | |
| 948 | // v2-v6 preserved | |
| 949 | // v7.16b[] = 0x63 | |
| 950 | // v8-v14 preserved | |
| 951 | // v15 = last round key (converted to native endianness) | |
| 952 | // other SIMD registers corrupted | |
| 953 | _bsaes_key_convert: | |
| 2bd5cde5 | 954 | #ifdef __AARCH64EL__ |
| 82551af5 BA |
955 | adr x11, .LM0_littleendian |
| 956 | #else | |
| 957 | adr x11, .LM0_bigendian | |
| 958 | #endif | |
| 959 | ldr q0, [x9], #16 // load round 0 key | |
| 960 | ldr q1, [x11] // .LM0 | |
| 961 | ldr q15, [x9], #16 // load round 1 key | |
| 962 | ||
| 963 | movi v7.16b, #0x63 // compose .L63 | |
| 964 | movi v16.16b, #0x01 // bit masks | |
| 965 | movi v17.16b, #0x02 | |
| 966 | movi v18.16b, #0x04 | |
| 967 | movi v19.16b, #0x08 | |
| 968 | movi v20.16b, #0x10 | |
| 969 | movi v21.16b, #0x20 | |
| 970 | movi v22.16b, #0x40 | |
| 971 | movi v23.16b, #0x80 | |
| 972 | ||
| 2bd5cde5 | 973 | #ifdef __AARCH64EL__ |
| 82551af5 BA |
974 | rev32 v0.16b, v0.16b |
| 975 | #endif | |
| 976 | sub x10, x10, #1 | |
| 977 | str q0, [x17], #16 // save round 0 key | |
| 978 | ||
| 979 | .align 4 | |
| 980 | .Lkey_loop: | |
| 981 | tbl v0.16b, {v15.16b}, v1.16b | |
| 982 | ldr q15, [x9], #16 // load next round key | |
| 983 | ||
| 984 | eor v0.16b, v0.16b, v7.16b | |
| 985 | cmtst v24.16b, v0.16b, v16.16b | |
| 986 | cmtst v25.16b, v0.16b, v17.16b | |
| 987 | cmtst v26.16b, v0.16b, v18.16b | |
| 988 | cmtst v27.16b, v0.16b, v19.16b | |
| 989 | cmtst v28.16b, v0.16b, v20.16b | |
| 990 | cmtst v29.16b, v0.16b, v21.16b | |
| 991 | cmtst v30.16b, v0.16b, v22.16b | |
| 992 | cmtst v31.16b, v0.16b, v23.16b | |
| 993 | sub x10, x10, #1 | |
| 994 | st1 {v24.16b-v27.16b}, [x17], #64 // write bit-sliced round key | |
| 995 | st1 {v28.16b-v31.16b}, [x17], #64 | |
| 996 | cbnz x10, .Lkey_loop | |
| 997 | ||
| 998 | // don't save last round key | |
| 2bd5cde5 | 999 | #ifdef __AARCH64EL__ |
| 82551af5 BA |
1000 | rev32 v15.16b, v15.16b |
| 1001 | adr x11, .LM0_bigendian | |
| 1002 | #endif | |
| 1003 | ret | |
| 1004 | .size _bsaes_key_convert,.-_bsaes_key_convert | |
| 1005 | ||
| 1006 | .globl ossl_bsaes_cbc_encrypt | |
| 1007 | .type ossl_bsaes_cbc_encrypt,%function | |
| 1008 | .align 4 | |
| 1009 | // On entry: | |
| 1010 | // x0 -> input ciphertext | |
| 1011 | // x1 -> output plaintext | |
| 1012 | // x2 = size of ciphertext and plaintext in bytes (assumed a multiple of 16) | |
| 1013 | // x3 -> key | |
| 1014 | // x4 -> 128-bit initialisation vector (or preceding 128-bit block of ciphertext if continuing after an earlier call) | |
| 1015 | // w5 must be == 0 | |
| 1016 | // On exit: | |
| 1017 | // Output plaintext filled in | |
| 1018 | // Initialisation vector overwritten with last quadword of ciphertext | |
| 1019 | // No output registers, usual AAPCS64 register preservation | |
| 1020 | ossl_bsaes_cbc_encrypt: | |
| 1021 | cmp x2, #128 | |
| a35c3a9f TC |
1022 | bhs .Lcbc_do_bsaes |
| 1023 | b AES_cbc_encrypt | |
| 1024 | .Lcbc_do_bsaes: | |
| 82551af5 BA |
1025 | |
| 1026 | // it is up to the caller to make sure we are called with enc == 0 | |
| 1027 | ||
| 5adddcd9 | 1028 | stp x29, x30, [sp, #-48]! |
| 82551af5 BA |
1029 | stp d8, d9, [sp, #16] |
| 1030 | stp d10, d15, [sp, #32] | |
| 1031 | lsr x2, x2, #4 // len in 16 byte blocks | |
| 1032 | ||
| 1033 | ldr w15, [x3, #240] // get # of rounds | |
| 1034 | mov x14, sp | |
| 1035 | ||
| 1036 | // allocate the key schedule on the stack | |
| 1037 | add x17, sp, #96 | |
| 1038 | sub x17, x17, x15, lsl #7 // 128 bytes per inner round key, less 96 bytes | |
| 1039 | ||
| 1040 | // populate the key schedule | |
| 1041 | mov x9, x3 // pass key | |
| 1042 | mov x10, x15 // pass # of rounds | |
| 1043 | mov sp, x17 // sp is sp | |
| 1044 | bl _bsaes_key_convert | |
| 1045 | ldr q6, [sp] | |
| 1046 | str q15, [x17] // save last round key | |
| 1047 | eor v6.16b, v6.16b, v7.16b // fix up round 0 key (by XORing with 0x63) | |
| 1048 | str q6, [sp] | |
| 1049 | ||
| 1050 | ldr q15, [x4] // load IV | |
| 1051 | b .Lcbc_dec_loop | |
| 1052 | ||
| 1053 | .align 4 | |
| 1054 | .Lcbc_dec_loop: | |
| 1055 | subs x2, x2, #0x8 | |
| 1056 | bmi .Lcbc_dec_loop_finish | |
| 1057 | ||
| 1058 | ldr q0, [x0], #16 // load input | |
| 1059 | mov x9, sp // pass the key | |
| 1060 | ldr q1, [x0], #16 | |
| 1061 | mov x10, x15 | |
| 1062 | ldr q2, [x0], #16 | |
| 1063 | ldr q3, [x0], #16 | |
| 1064 | ldr q4, [x0], #16 | |
| 1065 | ldr q5, [x0], #16 | |
| 1066 | ldr q6, [x0], #16 | |
| 1067 | ldr q7, [x0], #-7*16 | |
| 1068 | ||
| 1069 | bl _bsaes_decrypt8 | |
| 1070 | ||
| 1071 | ldr q16, [x0], #16 // reload input | |
| 1072 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1073 | eor v1.16b, v1.16b, v16.16b | |
| 1074 | str q0, [x1], #16 // write output | |
| 1075 | ldr q0, [x0], #16 | |
| 1076 | str q1, [x1], #16 | |
| 1077 | ldr q1, [x0], #16 | |
| 1078 | eor v1.16b, v4.16b, v1.16b | |
| 1079 | ldr q4, [x0], #16 | |
| 1080 | eor v2.16b, v2.16b, v4.16b | |
| 1081 | eor v0.16b, v6.16b, v0.16b | |
| 1082 | ldr q4, [x0], #16 | |
| 1083 | str q0, [x1], #16 | |
| 1084 | str q1, [x1], #16 | |
| 1085 | eor v0.16b, v7.16b, v4.16b | |
| 1086 | ldr q1, [x0], #16 | |
| 1087 | str q2, [x1], #16 | |
| 1088 | ldr q2, [x0], #16 | |
| 1089 | ldr q15, [x0], #16 | |
| 1090 | str q0, [x1], #16 | |
| 1091 | eor v0.16b, v5.16b, v2.16b | |
| 1092 | eor v1.16b, v3.16b, v1.16b | |
| 1093 | str q1, [x1], #16 | |
| 1094 | str q0, [x1], #16 | |
| 1095 | ||
| 1096 | b .Lcbc_dec_loop | |
| 1097 | ||
| 1098 | .Lcbc_dec_loop_finish: | |
| 1099 | adds x2, x2, #8 | |
| 1100 | beq .Lcbc_dec_done | |
| 1101 | ||
| 1102 | ldr q0, [x0], #16 // load input | |
| 1103 | cmp x2, #2 | |
| 1104 | blo .Lcbc_dec_one | |
| 1105 | ldr q1, [x0], #16 | |
| 1106 | mov x9, sp // pass the key | |
| 1107 | mov x10, x15 | |
| 1108 | beq .Lcbc_dec_two | |
| 1109 | ldr q2, [x0], #16 | |
| 1110 | cmp x2, #4 | |
| 1111 | blo .Lcbc_dec_three | |
| 1112 | ldr q3, [x0], #16 | |
| 1113 | beq .Lcbc_dec_four | |
| 1114 | ldr q4, [x0], #16 | |
| 1115 | cmp x2, #6 | |
| 1116 | blo .Lcbc_dec_five | |
| 1117 | ldr q5, [x0], #16 | |
| 1118 | beq .Lcbc_dec_six | |
| 1119 | ldr q6, [x0], #-6*16 | |
| 1120 | ||
| 1121 | bl _bsaes_decrypt8 | |
| 1122 | ||
| 1123 | ldr q5, [x0], #16 // reload input | |
| 1124 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1125 | ldr q8, [x0], #16 | |
| 1126 | ldr q9, [x0], #16 | |
| 1127 | ldr q10, [x0], #16 | |
| 1128 | str q0, [x1], #16 // write output | |
| 1129 | ldr q0, [x0], #16 | |
| 1130 | eor v1.16b, v1.16b, v5.16b | |
| 1131 | ldr q5, [x0], #16 | |
| 1132 | eor v6.16b, v6.16b, v8.16b | |
| 1133 | ldr q15, [x0] | |
| 1134 | eor v4.16b, v4.16b, v9.16b | |
| 1135 | eor v2.16b, v2.16b, v10.16b | |
| 1136 | str q1, [x1], #16 | |
| 1137 | eor v0.16b, v7.16b, v0.16b | |
| 1138 | str q6, [x1], #16 | |
| 1139 | eor v1.16b, v3.16b, v5.16b | |
| 1140 | str q4, [x1], #16 | |
| 1141 | str q2, [x1], #16 | |
| 1142 | str q0, [x1], #16 | |
| 1143 | str q1, [x1] | |
| 1144 | b .Lcbc_dec_done | |
| 1145 | .align 4 | |
| 1146 | .Lcbc_dec_six: | |
| 1147 | sub x0, x0, #0x60 | |
| 1148 | bl _bsaes_decrypt8 | |
| 1149 | ldr q3, [x0], #16 // reload input | |
| 1150 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1151 | ldr q5, [x0], #16 | |
| 1152 | ldr q8, [x0], #16 | |
| 1153 | ldr q9, [x0], #16 | |
| 1154 | str q0, [x1], #16 // write output | |
| 1155 | ldr q0, [x0], #16 | |
| 1156 | eor v1.16b, v1.16b, v3.16b | |
| 1157 | ldr q15, [x0] | |
| 1158 | eor v3.16b, v6.16b, v5.16b | |
| 1159 | eor v4.16b, v4.16b, v8.16b | |
| 1160 | eor v2.16b, v2.16b, v9.16b | |
| 1161 | str q1, [x1], #16 | |
| 1162 | eor v0.16b, v7.16b, v0.16b | |
| 1163 | str q3, [x1], #16 | |
| 1164 | str q4, [x1], #16 | |
| 1165 | str q2, [x1], #16 | |
| 1166 | str q0, [x1] | |
| 1167 | b .Lcbc_dec_done | |
| 1168 | .align 4 | |
| 1169 | .Lcbc_dec_five: | |
| 1170 | sub x0, x0, #0x50 | |
| 1171 | bl _bsaes_decrypt8 | |
| 1172 | ldr q3, [x0], #16 // reload input | |
| 1173 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1174 | ldr q5, [x0], #16 | |
| 1175 | ldr q7, [x0], #16 | |
| 1176 | ldr q8, [x0], #16 | |
| 1177 | str q0, [x1], #16 // write output | |
| 1178 | ldr q15, [x0] | |
| 1179 | eor v0.16b, v1.16b, v3.16b | |
| 1180 | eor v1.16b, v6.16b, v5.16b | |
| 1181 | eor v3.16b, v4.16b, v7.16b | |
| 1182 | str q0, [x1], #16 | |
| 1183 | eor v0.16b, v2.16b, v8.16b | |
| 1184 | str q1, [x1], #16 | |
| 1185 | str q3, [x1], #16 | |
| 1186 | str q0, [x1] | |
| 1187 | b .Lcbc_dec_done | |
| 1188 | .align 4 | |
| 1189 | .Lcbc_dec_four: | |
| 1190 | sub x0, x0, #0x40 | |
| 1191 | bl _bsaes_decrypt8 | |
| 1192 | ldr q2, [x0], #16 // reload input | |
| 1193 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1194 | ldr q3, [x0], #16 | |
| 1195 | ldr q5, [x0], #16 | |
| 1196 | str q0, [x1], #16 // write output | |
| 1197 | ldr q15, [x0] | |
| 1198 | eor v0.16b, v1.16b, v2.16b | |
| 1199 | eor v1.16b, v6.16b, v3.16b | |
| 1200 | eor v2.16b, v4.16b, v5.16b | |
| 1201 | str q0, [x1], #16 | |
| 1202 | str q1, [x1], #16 | |
| 1203 | str q2, [x1] | |
| 1204 | b .Lcbc_dec_done | |
| 1205 | .align 4 | |
| 1206 | .Lcbc_dec_three: | |
| 1207 | sub x0, x0, #0x30 | |
| 1208 | bl _bsaes_decrypt8 | |
| 1209 | ldr q2, [x0], #16 // reload input | |
| 1210 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1211 | ldr q3, [x0], #16 | |
| 1212 | ldr q15, [x0] | |
| 1213 | str q0, [x1], #16 // write output | |
| 1214 | eor v0.16b, v1.16b, v2.16b | |
| 1215 | eor v1.16b, v6.16b, v3.16b | |
| 1216 | str q0, [x1], #16 | |
| 1217 | str q1, [x1] | |
| 1218 | b .Lcbc_dec_done | |
| 1219 | .align 4 | |
| 1220 | .Lcbc_dec_two: | |
| 1221 | sub x0, x0, #0x20 | |
| 1222 | bl _bsaes_decrypt8 | |
| 1223 | ldr q2, [x0], #16 // reload input | |
| 1224 | eor v0.16b, v0.16b, v15.16b // ^= IV | |
| 1225 | ldr q15, [x0] | |
| 1226 | str q0, [x1], #16 // write output | |
| 1227 | eor v0.16b, v1.16b, v2.16b | |
| 1228 | str q0, [x1] | |
| 1229 | b .Lcbc_dec_done | |
| 1230 | .align 4 | |
| 1231 | .Lcbc_dec_one: | |
| 1232 | sub x0, x0, #0x10 | |
| 1233 | stp x1, x4, [sp, #-32]! | |
| 1234 | str x14, [sp, #16] | |
| 1235 | mov v8.16b, v15.16b | |
| 1236 | mov v15.16b, v0.16b | |
| 1237 | mov x2, x3 | |
| 1238 | bl AES_decrypt | |
| 1239 | ldr x14, [sp, #16] | |
| 1240 | ldp x1, x4, [sp], #32 | |
| 1241 | ldr q0, [x1] // load result | |
| 1242 | eor v0.16b, v0.16b, v8.16b // ^= IV | |
| 1243 | str q0, [x1] // write output | |
| 1244 | ||
| 1245 | .align 4 | |
| 1246 | .Lcbc_dec_done: | |
| 1247 | movi v0.16b, #0 | |
| 1248 | movi v1.16b, #0 | |
| 1249 | .Lcbc_dec_bzero:// wipe key schedule [if any] | |
| 1250 | stp q0, q1, [sp], #32 | |
| 1251 | cmp sp, x14 | |
| 1252 | bne .Lcbc_dec_bzero | |
| 1253 | str q15, [x4] // return IV | |
| 1254 | ldp d8, d9, [sp, #16] | |
| 1255 | ldp d10, d15, [sp, #32] | |
| 5adddcd9 | 1256 | ldp x29, x30, [sp], #48 |
| 82551af5 BA |
1257 | ret |
| 1258 | .size ossl_bsaes_cbc_encrypt,.-ossl_bsaes_cbc_encrypt | |
| 1259 | ||
| 1260 | .globl ossl_bsaes_ctr32_encrypt_blocks | |
| 1261 | .type ossl_bsaes_ctr32_encrypt_blocks,%function | |
| 1262 | .align 4 | |
| 1263 | // On entry: | |
| 1264 | // x0 -> input text (whole 16-byte blocks) | |
| 1265 | // x1 -> output text (whole 16-byte blocks) | |
| 1266 | // x2 = number of 16-byte blocks to encrypt/decrypt (> 0) | |
| 1267 | // x3 -> key | |
| 1268 | // x4 -> initial value of 128-bit counter (stored big-endian) which increments, modulo 2^32, for each block | |
| 1269 | // On exit: | |
| 1270 | // Output text filled in | |
| 1271 | // No output registers, usual AAPCS64 register preservation | |
| 1272 | ossl_bsaes_ctr32_encrypt_blocks: | |
| 1273 | ||
| 1274 | cmp x2, #8 // use plain AES for | |
| 1275 | blo .Lctr_enc_short // small sizes | |
| 1276 | ||
| 5adddcd9 | 1277 | stp x29, x30, [sp, #-80]! |
| 82551af5 BA |
1278 | stp d8, d9, [sp, #16] |
| 1279 | stp d10, d11, [sp, #32] | |
| 1280 | stp d12, d13, [sp, #48] | |
| 1281 | stp d14, d15, [sp, #64] | |
| 1282 | ||
| 1283 | ldr w15, [x3, #240] // get # of rounds | |
| 1284 | mov x14, sp | |
| 1285 | ||
| 1286 | // allocate the key schedule on the stack | |
| 1287 | add x17, sp, #96 | |
| 1288 | sub x17, x17, x15, lsl #7 // 128 bytes per inner round key, less 96 bytes | |
| 1289 | ||
| 1290 | // populate the key schedule | |
| 1291 | mov x9, x3 // pass key | |
| 1292 | mov x10, x15 // pass # of rounds | |
| 1293 | mov sp, x17 // sp is sp | |
| 1294 | bl _bsaes_key_convert | |
| 1295 | eor v7.16b, v7.16b, v15.16b // fix up last round key | |
| 1296 | str q7, [x17] // save last round key | |
| 1297 | ||
| 1298 | ldr q0, [x4] // load counter | |
| 1299 | add x13, x11, #.LREVM0SR-.LM0_bigendian | |
| 1300 | ldr q4, [sp] // load round0 key | |
| 1301 | ||
| 1302 | movi v8.4s, #1 // compose 1<<96 | |
| 1303 | movi v9.16b, #0 | |
| 1304 | rev32 v15.16b, v0.16b | |
| 1305 | rev32 v0.16b, v0.16b | |
| 1306 | ext v11.16b, v9.16b, v8.16b, #4 | |
| 1307 | rev32 v4.16b, v4.16b | |
| 1308 | add v12.4s, v11.4s, v11.4s // compose 2<<96 | |
| 1309 | str q4, [sp] // save adjusted round0 key | |
| 1310 | add v13.4s, v11.4s, v12.4s // compose 3<<96 | |
| 1311 | add v14.4s, v12.4s, v12.4s // compose 4<<96 | |
| 1312 | b .Lctr_enc_loop | |
| 1313 | ||
| 1314 | .align 4 | |
| 1315 | .Lctr_enc_loop: | |
| 1316 | // Intermix prologue from _bsaes_encrypt8 to use the opportunity | |
| 1317 | // to flip byte order in 32-bit counter | |
| 1318 | ||
| 1319 | add v1.4s, v15.4s, v11.4s // +1 | |
| 1320 | add x9, sp, #0x10 // pass next round key | |
| 1321 | add v2.4s, v15.4s, v12.4s // +2 | |
| 1322 | ldr q9, [x13] // .LREVM0SR | |
| 1323 | ldr q8, [sp] // load round0 key | |
| 1324 | add v3.4s, v15.4s, v13.4s // +3 | |
| 1325 | mov x10, x15 // pass rounds | |
| 1326 | sub x11, x13, #.LREVM0SR-.LSR // pass constants | |
| 1327 | add v6.4s, v2.4s, v14.4s | |
| 1328 | add v4.4s, v15.4s, v14.4s // +4 | |
| 1329 | add v7.4s, v3.4s, v14.4s | |
| 1330 | add v15.4s, v4.4s, v14.4s // next counter | |
| 1331 | add v5.4s, v1.4s, v14.4s | |
| 1332 | ||
| 1333 | bl _bsaes_encrypt8_alt | |
| 1334 | ||
| 1335 | subs x2, x2, #8 | |
| 1336 | blo .Lctr_enc_loop_done | |
| 1337 | ||
| 1338 | ldr q16, [x0], #16 | |
| 1339 | ldr q17, [x0], #16 | |
| 1340 | eor v1.16b, v1.16b, v17.16b | |
| 1341 | ldr q17, [x0], #16 | |
| 1342 | eor v0.16b, v0.16b, v16.16b | |
| 1343 | eor v4.16b, v4.16b, v17.16b | |
| 1344 | str q0, [x1], #16 | |
| 1345 | ldr q16, [x0], #16 | |
| 1346 | str q1, [x1], #16 | |
| 1347 | mov v0.16b, v15.16b | |
| 1348 | str q4, [x1], #16 | |
| 1349 | ldr q1, [x0], #16 | |
| 1350 | eor v4.16b, v6.16b, v16.16b | |
| 1351 | eor v1.16b, v3.16b, v1.16b | |
| 1352 | ldr q3, [x0], #16 | |
| 1353 | eor v3.16b, v7.16b, v3.16b | |
| 1354 | ldr q6, [x0], #16 | |
| 1355 | eor v2.16b, v2.16b, v6.16b | |
| 1356 | ldr q6, [x0], #16 | |
| 1357 | eor v5.16b, v5.16b, v6.16b | |
| 1358 | str q4, [x1], #16 | |
| 1359 | str q1, [x1], #16 | |
| 1360 | str q3, [x1], #16 | |
| 1361 | str q2, [x1], #16 | |
| 1362 | str q5, [x1], #16 | |
| 1363 | ||
| 1364 | bne .Lctr_enc_loop | |
| 1365 | b .Lctr_enc_done | |
| 1366 | ||
| 1367 | .align 4 | |
| 1368 | .Lctr_enc_loop_done: | |
| 1369 | add x2, x2, #8 | |
| 1370 | ldr q16, [x0], #16 // load input | |
| 1371 | eor v0.16b, v0.16b, v16.16b | |
| 1372 | str q0, [x1], #16 // write output | |
| 1373 | cmp x2, #2 | |
| 1374 | blo .Lctr_enc_done | |
| 1375 | ldr q17, [x0], #16 | |
| 1376 | eor v1.16b, v1.16b, v17.16b | |
| 1377 | str q1, [x1], #16 | |
| 1378 | beq .Lctr_enc_done | |
| 1379 | ldr q18, [x0], #16 | |
| 1380 | eor v4.16b, v4.16b, v18.16b | |
| 1381 | str q4, [x1], #16 | |
| 1382 | cmp x2, #4 | |
| 1383 | blo .Lctr_enc_done | |
| 1384 | ldr q19, [x0], #16 | |
| 1385 | eor v6.16b, v6.16b, v19.16b | |
| 1386 | str q6, [x1], #16 | |
| 1387 | beq .Lctr_enc_done | |
| 1388 | ldr q20, [x0], #16 | |
| 1389 | eor v3.16b, v3.16b, v20.16b | |
| 1390 | str q3, [x1], #16 | |
| 1391 | cmp x2, #6 | |
| 1392 | blo .Lctr_enc_done | |
| 1393 | ldr q21, [x0], #16 | |
| 1394 | eor v7.16b, v7.16b, v21.16b | |
| 1395 | str q7, [x1], #16 | |
| 1396 | beq .Lctr_enc_done | |
| 1397 | ldr q22, [x0] | |
| 1398 | eor v2.16b, v2.16b, v22.16b | |
| 1399 | str q2, [x1], #16 | |
| 1400 | ||
| 1401 | .Lctr_enc_done: | |
| 1402 | movi v0.16b, #0 | |
| 1403 | movi v1.16b, #0 | |
| 1404 | .Lctr_enc_bzero: // wipe key schedule [if any] | |
| 1405 | stp q0, q1, [sp], #32 | |
| 1406 | cmp sp, x14 | |
| 1407 | bne .Lctr_enc_bzero | |
| 1408 | ||
| 1409 | ldp d8, d9, [sp, #16] | |
| 1410 | ldp d10, d11, [sp, #32] | |
| 1411 | ldp d12, d13, [sp, #48] | |
| 1412 | ldp d14, d15, [sp, #64] | |
| 5adddcd9 | 1413 | ldp x29, x30, [sp], #80 |
| 82551af5 BA |
1414 | ret |
| 1415 | ||
| 1416 | .Lctr_enc_short: | |
| 5adddcd9 | 1417 | stp x29, x30, [sp, #-96]! |
| 82551af5 BA |
1418 | stp x19, x20, [sp, #16] |
| 1419 | stp x21, x22, [sp, #32] | |
| 1420 | str x23, [sp, #48] | |
| 1421 | ||
| 1422 | mov x19, x0 // copy arguments | |
| 1423 | mov x20, x1 | |
| 1424 | mov x21, x2 | |
| 1425 | mov x22, x3 | |
| 1426 | ldr w23, [x4, #12] // load counter .LSW | |
| 1427 | ldr q1, [x4] // load whole counter value | |
| 2bd5cde5 | 1428 | #ifdef __AARCH64EL__ |
| 82551af5 BA |
1429 | rev w23, w23 |
| 1430 | #endif | |
| 1431 | str q1, [sp, #80] // copy counter value | |
| 1432 | ||
| 1433 | .Lctr_enc_short_loop: | |
| 1434 | add x0, sp, #80 // input counter value | |
| 1435 | add x1, sp, #64 // output on the stack | |
| 1436 | mov x2, x22 // key | |
| 1437 | ||
| 1438 | bl AES_encrypt | |
| 1439 | ||
| 1440 | ldr q0, [x19], #16 // load input | |
| 1441 | ldr q1, [sp, #64] // load encrypted counter | |
| 1442 | add x23, x23, #1 | |
| 2bd5cde5 | 1443 | #ifdef __AARCH64EL__ |
| 82551af5 BA |
1444 | rev w0, w23 |
| 1445 | str w0, [sp, #80+12] // next counter value | |
| 1446 | #else | |
| 1447 | str w23, [sp, #80+12] // next counter value | |
| 1448 | #endif | |
| 1449 | eor v0.16b, v0.16b, v1.16b | |
| 1450 | str q0, [x20], #16 // store output | |
| 1451 | subs x21, x21, #1 | |
| 1452 | bne .Lctr_enc_short_loop | |
| 1453 | ||
| 1454 | movi v0.16b, #0 | |
| 1455 | movi v1.16b, #0 | |
| 1456 | stp q0, q1, [sp, #64] | |
| 1457 | ||
| 1458 | ldr x23, [sp, #48] | |
| 1459 | ldp x21, x22, [sp, #32] | |
| 1460 | ldp x19, x20, [sp, #16] | |
| 5adddcd9 | 1461 | ldp x29, x30, [sp], #96 |
| 82551af5 BA |
1462 | ret |
| 1463 | .size ossl_bsaes_ctr32_encrypt_blocks,.-ossl_bsaes_ctr32_encrypt_blocks | |
| 1464 | ||
| 1465 | .globl ossl_bsaes_xts_encrypt | |
| 1466 | .type ossl_bsaes_xts_encrypt,%function | |
| 1467 | .align 4 | |
| 1468 | // On entry: | |
| 1469 | // x0 -> input plaintext | |
| 1470 | // x1 -> output ciphertext | |
| 1471 | // x2 -> length of text in bytes (must be at least 16) | |
| 1472 | // x3 -> key1 (used to encrypt the XORed plaintext blocks) | |
| 1473 | // x4 -> key2 (used to encrypt the initial vector to yield the initial tweak) | |
| 1474 | // x5 -> 16-byte initial vector (typically, sector number) | |
| 1475 | // On exit: | |
| 1476 | // Output ciphertext filled in | |
| 1477 | // No output registers, usual AAPCS64 register preservation | |
| 1478 | ossl_bsaes_xts_encrypt: | |
| 1479 | // Stack layout: | |
| 1480 | // sp -> | |
| 1481 | // nrounds*128-96 bytes: key schedule | |
| 1482 | // x19 -> | |
| 1483 | // 16 bytes: frame record | |
| 1484 | // 4*16 bytes: tweak storage across _bsaes_encrypt8 | |
| 1485 | // 6*8 bytes: storage for 5 callee-saved general-purpose registers | |
| 1486 | // 8*8 bytes: storage for 8 callee-saved SIMD registers | |
| 5adddcd9 | 1487 | stp x29, x30, [sp, #-192]! |
| 82551af5 BA |
1488 | stp x19, x20, [sp, #80] |
| 1489 | stp x21, x22, [sp, #96] | |
| 1490 | str x23, [sp, #112] | |
| 1491 | stp d8, d9, [sp, #128] | |
| 1492 | stp d10, d11, [sp, #144] | |
| 1493 | stp d12, d13, [sp, #160] | |
| 1494 | stp d14, d15, [sp, #176] | |
| 1495 | ||
| 1496 | mov x19, sp | |
| 1497 | mov x20, x0 | |
| 1498 | mov x21, x1 | |
| 1499 | mov x22, x2 | |
| 1500 | mov x23, x3 | |
| 1501 | ||
| 1502 | // generate initial tweak | |
| 1503 | sub sp, sp, #16 | |
| 1504 | mov x0, x5 // iv[] | |
| 1505 | mov x1, sp | |
| 1506 | mov x2, x4 // key2 | |
| 1507 | bl AES_encrypt | |
| 1508 | ldr q11, [sp], #16 | |
| 1509 | ||
| 1510 | ldr w1, [x23, #240] // get # of rounds | |
| 1511 | // allocate the key schedule on the stack | |
| 1512 | add x17, sp, #96 | |
| 1513 | sub x17, x17, x1, lsl #7 // 128 bytes per inner round key, less 96 bytes | |
| 1514 | ||
| 1515 | // populate the key schedule | |
| 1516 | mov x9, x23 // pass key | |
| 1517 | mov x10, x1 // pass # of rounds | |
| 1518 | mov sp, x17 | |
| 1519 | bl _bsaes_key_convert | |
| 1520 | eor v15.16b, v15.16b, v7.16b // fix up last round key | |
| 1521 | str q15, [x17] // save last round key | |
| 1522 | ||
| 1523 | subs x22, x22, #0x80 | |
| 1524 | blo .Lxts_enc_short | |
| 1525 | b .Lxts_enc_loop | |
| 1526 | ||
| 1527 | .align 4 | |
| 1528 | .Lxts_enc_loop: | |
| 1529 | ldr q8, .Lxts_magic | |
| 1530 | mov x10, x1 // pass rounds | |
| 1531 | add x2, x19, #16 | |
| 1532 | ldr q0, [x20], #16 | |
| 1533 | sshr v1.2d, v11.2d, #63 | |
| 1534 | mov x9, sp // pass key schedule | |
| 1535 | ldr q6, .Lxts_magic+16 | |
| 1536 | add v2.2d, v11.2d, v11.2d | |
| 1537 | cmtst v3.2d, v11.2d, v6.2d | |
| 1538 | and v1.16b, v1.16b, v8.16b | |
| 1539 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 1540 | and v3.16b, v3.16b, v8.16b | |
| 1541 | ldr q4, [x20], #16 | |
| 1542 | eor v12.16b, v2.16b, v1.16b | |
| 1543 | eor v1.16b, v4.16b, v12.16b | |
| 1544 | eor v0.16b, v0.16b, v11.16b | |
| 1545 | cmtst v2.2d, v12.2d, v6.2d | |
| 1546 | add v4.2d, v12.2d, v12.2d | |
| 1547 | add x0, x19, #16 | |
| 1548 | ext v3.16b, v3.16b, v3.16b, #8 | |
| 1549 | and v2.16b, v2.16b, v8.16b | |
| 1550 | eor v13.16b, v4.16b, v3.16b | |
| 1551 | ldr q3, [x20], #16 | |
| 1552 | ext v4.16b, v2.16b, v2.16b, #8 | |
| 1553 | eor v2.16b, v3.16b, v13.16b | |
| 1554 | ldr q3, [x20], #16 | |
| 1555 | add v5.2d, v13.2d, v13.2d | |
| 1556 | cmtst v7.2d, v13.2d, v6.2d | |
| 1557 | and v7.16b, v7.16b, v8.16b | |
| 1558 | ldr q9, [x20], #16 | |
| 1559 | ext v7.16b, v7.16b, v7.16b, #8 | |
| 1560 | ldr q10, [x20], #16 | |
| 1561 | eor v14.16b, v5.16b, v4.16b | |
| 1562 | ldr q16, [x20], #16 | |
| 1563 | add v4.2d, v14.2d, v14.2d | |
| 1564 | eor v3.16b, v3.16b, v14.16b | |
| 1565 | eor v15.16b, v4.16b, v7.16b | |
| 1566 | add v5.2d, v15.2d, v15.2d | |
| 1567 | ldr q7, [x20], #16 | |
| 1568 | cmtst v4.2d, v14.2d, v6.2d | |
| 1569 | and v17.16b, v4.16b, v8.16b | |
| 1570 | cmtst v18.2d, v15.2d, v6.2d | |
| 1571 | eor v4.16b, v9.16b, v15.16b | |
| 1572 | ext v9.16b, v17.16b, v17.16b, #8 | |
| 1573 | eor v9.16b, v5.16b, v9.16b | |
| 1574 | add v17.2d, v9.2d, v9.2d | |
| 1575 | and v18.16b, v18.16b, v8.16b | |
| 1576 | eor v5.16b, v10.16b, v9.16b | |
| 1577 | str q9, [x2], #16 | |
| 1578 | ext v10.16b, v18.16b, v18.16b, #8 | |
| 1579 | cmtst v9.2d, v9.2d, v6.2d | |
| 1580 | and v9.16b, v9.16b, v8.16b | |
| 1581 | eor v10.16b, v17.16b, v10.16b | |
| 1582 | cmtst v17.2d, v10.2d, v6.2d | |
| 1583 | eor v6.16b, v16.16b, v10.16b | |
| 1584 | str q10, [x2], #16 | |
| 1585 | ext v9.16b, v9.16b, v9.16b, #8 | |
| 1586 | add v10.2d, v10.2d, v10.2d | |
| 1587 | eor v9.16b, v10.16b, v9.16b | |
| 1588 | str q9, [x2], #16 | |
| 1589 | eor v7.16b, v7.16b, v9.16b | |
| 1590 | add v9.2d, v9.2d, v9.2d | |
| 1591 | and v8.16b, v17.16b, v8.16b | |
| 1592 | ext v8.16b, v8.16b, v8.16b, #8 | |
| 1593 | eor v8.16b, v9.16b, v8.16b | |
| 1594 | str q8, [x2] // next round tweak | |
| 1595 | ||
| 1596 | bl _bsaes_encrypt8 | |
| 1597 | ||
| 1598 | ldr q8, [x0], #16 | |
| 1599 | eor v0.16b, v0.16b, v11.16b | |
| 1600 | eor v1.16b, v1.16b, v12.16b | |
| 1601 | ldr q9, [x0], #16 | |
| 1602 | eor v4.16b, v4.16b, v13.16b | |
| 1603 | eor v6.16b, v6.16b, v14.16b | |
| 1604 | ldr q10, [x0], #16 | |
| 1605 | eor v3.16b, v3.16b, v15.16b | |
| 1606 | subs x22, x22, #0x80 | |
| 1607 | str q0, [x21], #16 | |
| 1608 | ldr q11, [x0] // next round tweak | |
| 1609 | str q1, [x21], #16 | |
| 1610 | eor v0.16b, v7.16b, v8.16b | |
| 1611 | eor v1.16b, v2.16b, v9.16b | |
| 1612 | str q4, [x21], #16 | |
| 1613 | eor v2.16b, v5.16b, v10.16b | |
| 1614 | str q6, [x21], #16 | |
| 1615 | str q3, [x21], #16 | |
| 1616 | str q0, [x21], #16 | |
| 1617 | str q1, [x21], #16 | |
| 1618 | str q2, [x21], #16 | |
| 1619 | bpl .Lxts_enc_loop | |
| 1620 | ||
| 1621 | .Lxts_enc_short: | |
| 1622 | adds x22, x22, #0x70 | |
| 1623 | bmi .Lxts_enc_done | |
| 1624 | ||
| 1625 | ldr q8, .Lxts_magic | |
| 1626 | sshr v1.2d, v11.2d, #63 | |
| 1627 | add v2.2d, v11.2d, v11.2d | |
| 1628 | ldr q9, .Lxts_magic+16 | |
| 1629 | subs x22, x22, #0x10 | |
| 1630 | ldr q0, [x20], #16 | |
| 1631 | and v1.16b, v1.16b, v8.16b | |
| 1632 | cmtst v3.2d, v11.2d, v9.2d | |
| 1633 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 1634 | and v3.16b, v3.16b, v8.16b | |
| 1635 | eor v12.16b, v2.16b, v1.16b | |
| 1636 | ext v1.16b, v3.16b, v3.16b, #8 | |
| 1637 | add v2.2d, v12.2d, v12.2d | |
| 1638 | cmtst v3.2d, v12.2d, v9.2d | |
| 1639 | eor v13.16b, v2.16b, v1.16b | |
| 1640 | and v22.16b, v3.16b, v8.16b | |
| 1641 | bmi .Lxts_enc_1 | |
| 1642 | ||
| 1643 | ext v2.16b, v22.16b, v22.16b, #8 | |
| 1644 | add v3.2d, v13.2d, v13.2d | |
| 1645 | ldr q1, [x20], #16 | |
| 1646 | cmtst v4.2d, v13.2d, v9.2d | |
| 1647 | subs x22, x22, #0x10 | |
| 1648 | eor v14.16b, v3.16b, v2.16b | |
| 1649 | and v23.16b, v4.16b, v8.16b | |
| 1650 | bmi .Lxts_enc_2 | |
| 1651 | ||
| 1652 | ext v3.16b, v23.16b, v23.16b, #8 | |
| 1653 | add v4.2d, v14.2d, v14.2d | |
| 1654 | ldr q2, [x20], #16 | |
| 1655 | cmtst v5.2d, v14.2d, v9.2d | |
| 1656 | eor v0.16b, v0.16b, v11.16b | |
| 1657 | subs x22, x22, #0x10 | |
| 1658 | eor v15.16b, v4.16b, v3.16b | |
| 1659 | and v24.16b, v5.16b, v8.16b | |
| 1660 | bmi .Lxts_enc_3 | |
| 1661 | ||
| 1662 | ext v4.16b, v24.16b, v24.16b, #8 | |
| 1663 | add v5.2d, v15.2d, v15.2d | |
| 1664 | ldr q3, [x20], #16 | |
| 1665 | cmtst v6.2d, v15.2d, v9.2d | |
| 1666 | eor v1.16b, v1.16b, v12.16b | |
| 1667 | subs x22, x22, #0x10 | |
| 1668 | eor v16.16b, v5.16b, v4.16b | |
| 1669 | and v25.16b, v6.16b, v8.16b | |
| 1670 | bmi .Lxts_enc_4 | |
| 1671 | ||
| 1672 | ext v5.16b, v25.16b, v25.16b, #8 | |
| 1673 | add v6.2d, v16.2d, v16.2d | |
| 1674 | add x0, x19, #16 | |
| 1675 | cmtst v7.2d, v16.2d, v9.2d | |
| 1676 | ldr q4, [x20], #16 | |
| 1677 | eor v2.16b, v2.16b, v13.16b | |
| 1678 | str q16, [x0], #16 | |
| 1679 | subs x22, x22, #0x10 | |
| 1680 | eor v17.16b, v6.16b, v5.16b | |
| 1681 | and v26.16b, v7.16b, v8.16b | |
| 1682 | bmi .Lxts_enc_5 | |
| 1683 | ||
| 1684 | ext v7.16b, v26.16b, v26.16b, #8 | |
| 1685 | add v18.2d, v17.2d, v17.2d | |
| 1686 | ldr q5, [x20], #16 | |
| 1687 | eor v3.16b, v3.16b, v14.16b | |
| 1688 | str q17, [x0], #16 | |
| 1689 | subs x22, x22, #0x10 | |
| 1690 | eor v18.16b, v18.16b, v7.16b | |
| 1691 | bmi .Lxts_enc_6 | |
| 1692 | ||
| 1693 | ldr q6, [x20], #16 | |
| 1694 | eor v4.16b, v4.16b, v15.16b | |
| 1695 | eor v5.16b, v5.16b, v16.16b | |
| 1696 | str q18, [x0] // next round tweak | |
| 1697 | mov x9, sp // pass key schedule | |
| 1698 | mov x10, x1 | |
| 1699 | add x0, x19, #16 | |
| 1700 | sub x22, x22, #0x10 | |
| 1701 | eor v6.16b, v6.16b, v17.16b | |
| 1702 | ||
| 1703 | bl _bsaes_encrypt8 | |
| 1704 | ||
| 1705 | ldr q16, [x0], #16 | |
| 1706 | eor v0.16b, v0.16b, v11.16b | |
| 1707 | eor v1.16b, v1.16b, v12.16b | |
| 1708 | ldr q17, [x0], #16 | |
| 1709 | eor v4.16b, v4.16b, v13.16b | |
| 1710 | eor v6.16b, v6.16b, v14.16b | |
| 1711 | eor v3.16b, v3.16b, v15.16b | |
| 1712 | ldr q11, [x0] // next round tweak | |
| 1713 | str q0, [x21], #16 | |
| 1714 | str q1, [x21], #16 | |
| 1715 | eor v0.16b, v7.16b, v16.16b | |
| 1716 | eor v1.16b, v2.16b, v17.16b | |
| 1717 | str q4, [x21], #16 | |
| 1718 | str q6, [x21], #16 | |
| 1719 | str q3, [x21], #16 | |
| 1720 | str q0, [x21], #16 | |
| 1721 | str q1, [x21], #16 | |
| 1722 | b .Lxts_enc_done | |
| 1723 | ||
| 1724 | .align 4 | |
| 1725 | .Lxts_enc_6: | |
| 1726 | eor v4.16b, v4.16b, v15.16b | |
| 1727 | eor v5.16b, v5.16b, v16.16b | |
| 1728 | mov x9, sp // pass key schedule | |
| 1729 | mov x10, x1 // pass rounds | |
| 1730 | add x0, x19, #16 | |
| 1731 | ||
| 1732 | bl _bsaes_encrypt8 | |
| 1733 | ||
| 1734 | ldr q16, [x0], #16 | |
| 1735 | eor v0.16b, v0.16b, v11.16b | |
| 1736 | eor v1.16b, v1.16b, v12.16b | |
| 1737 | eor v4.16b, v4.16b, v13.16b | |
| 1738 | eor v6.16b, v6.16b, v14.16b | |
| 1739 | ldr q11, [x0] // next round tweak | |
| 1740 | eor v3.16b, v3.16b, v15.16b | |
| 1741 | str q0, [x21], #16 | |
| 1742 | str q1, [x21], #16 | |
| 1743 | eor v0.16b, v7.16b, v16.16b | |
| 1744 | str q4, [x21], #16 | |
| 1745 | str q6, [x21], #16 | |
| 1746 | str q3, [x21], #16 | |
| 1747 | str q0, [x21], #16 | |
| 1748 | b .Lxts_enc_done | |
| 1749 | ||
| 1750 | .align 4 | |
| 1751 | .Lxts_enc_5: | |
| 1752 | eor v3.16b, v3.16b, v14.16b | |
| 1753 | eor v4.16b, v4.16b, v15.16b | |
| 1754 | mov x9, sp // pass key schedule | |
| 1755 | mov x10, x1 // pass rounds | |
| 1756 | add x0, x19, #16 | |
| 1757 | ||
| 1758 | bl _bsaes_encrypt8 | |
| 1759 | ||
| 1760 | eor v0.16b, v0.16b, v11.16b | |
| 1761 | eor v1.16b, v1.16b, v12.16b | |
| 1762 | ldr q11, [x0] // next round tweak | |
| 1763 | eor v4.16b, v4.16b, v13.16b | |
| 1764 | eor v6.16b, v6.16b, v14.16b | |
| 1765 | eor v3.16b, v3.16b, v15.16b | |
| 1766 | str q0, [x21], #16 | |
| 1767 | str q1, [x21], #16 | |
| 1768 | str q4, [x21], #16 | |
| 1769 | str q6, [x21], #16 | |
| 1770 | str q3, [x21], #16 | |
| 1771 | b .Lxts_enc_done | |
| 1772 | ||
| 1773 | .align 4 | |
| 1774 | .Lxts_enc_4: | |
| 1775 | eor v2.16b, v2.16b, v13.16b | |
| 1776 | eor v3.16b, v3.16b, v14.16b | |
| 1777 | mov x9, sp // pass key schedule | |
| 1778 | mov x10, x1 // pass rounds | |
| 1779 | add x0, x19, #16 | |
| 1780 | ||
| 1781 | bl _bsaes_encrypt8 | |
| 1782 | ||
| 1783 | eor v0.16b, v0.16b, v11.16b | |
| 1784 | eor v1.16b, v1.16b, v12.16b | |
| 1785 | eor v4.16b, v4.16b, v13.16b | |
| 1786 | eor v6.16b, v6.16b, v14.16b | |
| 1787 | mov v11.16b, v15.16b // next round tweak | |
| 1788 | str q0, [x21], #16 | |
| 1789 | str q1, [x21], #16 | |
| 1790 | str q4, [x21], #16 | |
| 1791 | str q6, [x21], #16 | |
| 1792 | b .Lxts_enc_done | |
| 1793 | ||
| 1794 | .align 4 | |
| 1795 | .Lxts_enc_3: | |
| 1796 | eor v1.16b, v1.16b, v12.16b | |
| 1797 | eor v2.16b, v2.16b, v13.16b | |
| 1798 | mov x9, sp // pass key schedule | |
| 1799 | mov x10, x1 // pass rounds | |
| 1800 | add x0, x19, #16 | |
| 1801 | ||
| 1802 | bl _bsaes_encrypt8 | |
| 1803 | ||
| 1804 | eor v0.16b, v0.16b, v11.16b | |
| 1805 | eor v1.16b, v1.16b, v12.16b | |
| 1806 | eor v4.16b, v4.16b, v13.16b | |
| 1807 | mov v11.16b, v14.16b // next round tweak | |
| 1808 | str q0, [x21], #16 | |
| 1809 | str q1, [x21], #16 | |
| 1810 | str q4, [x21], #16 | |
| 1811 | b .Lxts_enc_done | |
| 1812 | ||
| 1813 | .align 4 | |
| 1814 | .Lxts_enc_2: | |
| 1815 | eor v0.16b, v0.16b, v11.16b | |
| 1816 | eor v1.16b, v1.16b, v12.16b | |
| 1817 | mov x9, sp // pass key schedule | |
| 1818 | mov x10, x1 // pass rounds | |
| 1819 | add x0, x19, #16 | |
| 1820 | ||
| 1821 | bl _bsaes_encrypt8 | |
| 1822 | ||
| 1823 | eor v0.16b, v0.16b, v11.16b | |
| 1824 | eor v1.16b, v1.16b, v12.16b | |
| 1825 | mov v11.16b, v13.16b // next round tweak | |
| 1826 | str q0, [x21], #16 | |
| 1827 | str q1, [x21], #16 | |
| 1828 | b .Lxts_enc_done | |
| 1829 | ||
| 1830 | .align 4 | |
| 1831 | .Lxts_enc_1: | |
| 1832 | eor v0.16b, v0.16b, v11.16b | |
| 1833 | sub x0, sp, #16 | |
| 1834 | sub x1, sp, #16 | |
| 1835 | mov x2, x23 | |
| 1836 | mov v13.d[0], v11.d[1] // just in case AES_encrypt corrupts top half of callee-saved SIMD registers | |
| 1837 | mov v14.d[0], v12.d[1] | |
| 1838 | str q0, [sp, #-16]! | |
| 1839 | ||
| 1840 | bl AES_encrypt | |
| 1841 | ||
| 1842 | ldr q0, [sp], #16 | |
| 1843 | trn1 v13.2d, v11.2d, v13.2d | |
| 1844 | trn1 v11.2d, v12.2d, v14.2d // next round tweak | |
| 1845 | eor v0.16b, v0.16b, v13.16b | |
| 1846 | str q0, [x21], #16 | |
| 1847 | ||
| 1848 | .Lxts_enc_done: | |
| 1849 | adds x22, x22, #0x10 | |
| 1850 | beq .Lxts_enc_ret | |
| 1851 | ||
| 1852 | sub x6, x21, #0x10 | |
| 1853 | // Penultimate plaintext block produces final ciphertext part-block | |
| 1854 | // plus remaining part of final plaintext block. Move ciphertext part | |
| a024ab98 | 1855 | // to final position and reuse penultimate ciphertext block buffer to |
| 82551af5 BA |
1856 | // construct final plaintext block |
| 1857 | .Lxts_enc_steal: | |
| 1858 | ldrb w0, [x20], #1 | |
| 1859 | ldrb w1, [x21, #-0x10] | |
| 1860 | strb w0, [x21, #-0x10] | |
| 1861 | strb w1, [x21], #1 | |
| 1862 | ||
| 1863 | subs x22, x22, #1 | |
| 1864 | bhi .Lxts_enc_steal | |
| 1865 | ||
| 1866 | // Finally encrypt the penultimate ciphertext block using the | |
| 1867 | // last tweak | |
| 1868 | ldr q0, [x6] | |
| 1869 | eor v0.16b, v0.16b, v11.16b | |
| 1870 | str q0, [sp, #-16]! | |
| 1871 | mov x0, sp | |
| 1872 | mov x1, sp | |
| 1873 | mov x2, x23 | |
| 1874 | mov x21, x6 | |
| 1875 | mov v13.d[0], v11.d[1] // just in case AES_encrypt corrupts top half of callee-saved SIMD registers | |
| 1876 | ||
| 1877 | bl AES_encrypt | |
| 1878 | ||
| 1879 | trn1 v11.2d, v11.2d, v13.2d | |
| 1880 | ldr q0, [sp], #16 | |
| 1881 | eor v0.16b, v0.16b, v11.16b | |
| 1882 | str q0, [x21] | |
| 1883 | ||
| 1884 | .Lxts_enc_ret: | |
| 1885 | ||
| 1886 | movi v0.16b, #0 | |
| 1887 | movi v1.16b, #0 | |
| 1888 | .Lxts_enc_bzero: // wipe key schedule | |
| 1889 | stp q0, q1, [sp], #32 | |
| 1890 | cmp sp, x19 | |
| 1891 | bne .Lxts_enc_bzero | |
| 1892 | ||
| 1893 | ldp x19, x20, [sp, #80] | |
| 1894 | ldp x21, x22, [sp, #96] | |
| 1895 | ldr x23, [sp, #112] | |
| 1896 | ldp d8, d9, [sp, #128] | |
| 1897 | ldp d10, d11, [sp, #144] | |
| 1898 | ldp d12, d13, [sp, #160] | |
| 1899 | ldp d14, d15, [sp, #176] | |
| 5adddcd9 | 1900 | ldp x29, x30, [sp], #192 |
| 82551af5 BA |
1901 | ret |
| 1902 | .size ossl_bsaes_xts_encrypt,.-ossl_bsaes_xts_encrypt | |
| 1903 | ||
| 1904 | // The assembler doesn't seem capable of de-duplicating these when expressed | |
| 1905 | // using `ldr qd,=` syntax, so assign a symbolic address | |
| 1906 | .align 5 | |
| 1907 | .Lxts_magic: | |
| 1908 | .quad 1, 0x87, 0x4000000000000000, 0x4000000000000000 | |
| 1909 | ||
| 1910 | .globl ossl_bsaes_xts_decrypt | |
| 1911 | .type ossl_bsaes_xts_decrypt,%function | |
| 1912 | .align 4 | |
| 1913 | // On entry: | |
| 1914 | // x0 -> input ciphertext | |
| 1915 | // x1 -> output plaintext | |
| 1916 | // x2 -> length of text in bytes (must be at least 16) | |
| 1917 | // x3 -> key1 (used to decrypt the XORed ciphertext blocks) | |
| 1918 | // x4 -> key2 (used to encrypt the initial vector to yield the initial tweak) | |
| 1919 | // x5 -> 16-byte initial vector (typically, sector number) | |
| 1920 | // On exit: | |
| 1921 | // Output plaintext filled in | |
| 1922 | // No output registers, usual AAPCS64 register preservation | |
| 1923 | ossl_bsaes_xts_decrypt: | |
| 1924 | // Stack layout: | |
| 1925 | // sp -> | |
| 1926 | // nrounds*128-96 bytes: key schedule | |
| 1927 | // x19 -> | |
| 1928 | // 16 bytes: frame record | |
| 1929 | // 4*16 bytes: tweak storage across _bsaes_decrypt8 | |
| 1930 | // 6*8 bytes: storage for 5 callee-saved general-purpose registers | |
| 1931 | // 8*8 bytes: storage for 8 callee-saved SIMD registers | |
| 5adddcd9 | 1932 | stp x29, x30, [sp, #-192]! |
| 82551af5 BA |
1933 | stp x19, x20, [sp, #80] |
| 1934 | stp x21, x22, [sp, #96] | |
| 1935 | str x23, [sp, #112] | |
| 1936 | stp d8, d9, [sp, #128] | |
| 1937 | stp d10, d11, [sp, #144] | |
| 1938 | stp d12, d13, [sp, #160] | |
| 1939 | stp d14, d15, [sp, #176] | |
| 1940 | ||
| 1941 | mov x19, sp | |
| 1942 | mov x20, x0 | |
| 1943 | mov x21, x1 | |
| 1944 | mov x22, x2 | |
| 1945 | mov x23, x3 | |
| 1946 | ||
| 1947 | // generate initial tweak | |
| 1948 | sub sp, sp, #16 | |
| 1949 | mov x0, x5 // iv[] | |
| 1950 | mov x1, sp | |
| 1951 | mov x2, x4 // key2 | |
| 1952 | bl AES_encrypt | |
| 1953 | ldr q11, [sp], #16 | |
| 1954 | ||
| 1955 | ldr w1, [x23, #240] // get # of rounds | |
| 1956 | // allocate the key schedule on the stack | |
| 1957 | add x17, sp, #96 | |
| 1958 | sub x17, x17, x1, lsl #7 // 128 bytes per inner round key, less 96 bytes | |
| 1959 | ||
| 1960 | // populate the key schedule | |
| 1961 | mov x9, x23 // pass key | |
| 1962 | mov x10, x1 // pass # of rounds | |
| 1963 | mov sp, x17 | |
| 1964 | bl _bsaes_key_convert | |
| 1965 | ldr q6, [sp] | |
| 1966 | str q15, [x17] // save last round key | |
| 1967 | eor v6.16b, v6.16b, v7.16b // fix up round 0 key (by XORing with 0x63) | |
| 1968 | str q6, [sp] | |
| 1969 | ||
| 1970 | sub x30, x22, #0x10 | |
| 1971 | tst x22, #0xf // if not multiple of 16 | |
| 1972 | csel x22, x30, x22, ne // subtract another 16 bytes | |
| 1973 | subs x22, x22, #0x80 | |
| 1974 | ||
| 1975 | blo .Lxts_dec_short | |
| 1976 | b .Lxts_dec_loop | |
| 1977 | ||
| 1978 | .align 4 | |
| 1979 | .Lxts_dec_loop: | |
| 1980 | ldr q8, .Lxts_magic | |
| 1981 | mov x10, x1 // pass rounds | |
| 1982 | add x2, x19, #16 | |
| 1983 | ldr q0, [x20], #16 | |
| 1984 | sshr v1.2d, v11.2d, #63 | |
| 1985 | mov x9, sp // pass key schedule | |
| 1986 | ldr q6, .Lxts_magic+16 | |
| 1987 | add v2.2d, v11.2d, v11.2d | |
| 1988 | cmtst v3.2d, v11.2d, v6.2d | |
| 1989 | and v1.16b, v1.16b, v8.16b | |
| 1990 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 1991 | and v3.16b, v3.16b, v8.16b | |
| 1992 | ldr q4, [x20], #16 | |
| 1993 | eor v12.16b, v2.16b, v1.16b | |
| 1994 | eor v1.16b, v4.16b, v12.16b | |
| 1995 | eor v0.16b, v0.16b, v11.16b | |
| 1996 | cmtst v2.2d, v12.2d, v6.2d | |
| 1997 | add v4.2d, v12.2d, v12.2d | |
| 1998 | add x0, x19, #16 | |
| 1999 | ext v3.16b, v3.16b, v3.16b, #8 | |
| 2000 | and v2.16b, v2.16b, v8.16b | |
| 2001 | eor v13.16b, v4.16b, v3.16b | |
| 2002 | ldr q3, [x20], #16 | |
| 2003 | ext v4.16b, v2.16b, v2.16b, #8 | |
| 2004 | eor v2.16b, v3.16b, v13.16b | |
| 2005 | ldr q3, [x20], #16 | |
| 2006 | add v5.2d, v13.2d, v13.2d | |
| 2007 | cmtst v7.2d, v13.2d, v6.2d | |
| 2008 | and v7.16b, v7.16b, v8.16b | |
| 2009 | ldr q9, [x20], #16 | |
| 2010 | ext v7.16b, v7.16b, v7.16b, #8 | |
| 2011 | ldr q10, [x20], #16 | |
| 2012 | eor v14.16b, v5.16b, v4.16b | |
| 2013 | ldr q16, [x20], #16 | |
| 2014 | add v4.2d, v14.2d, v14.2d | |
| 2015 | eor v3.16b, v3.16b, v14.16b | |
| 2016 | eor v15.16b, v4.16b, v7.16b | |
| 2017 | add v5.2d, v15.2d, v15.2d | |
| 2018 | ldr q7, [x20], #16 | |
| 2019 | cmtst v4.2d, v14.2d, v6.2d | |
| 2020 | and v17.16b, v4.16b, v8.16b | |
| 2021 | cmtst v18.2d, v15.2d, v6.2d | |
| 2022 | eor v4.16b, v9.16b, v15.16b | |
| 2023 | ext v9.16b, v17.16b, v17.16b, #8 | |
| 2024 | eor v9.16b, v5.16b, v9.16b | |
| 2025 | add v17.2d, v9.2d, v9.2d | |
| 2026 | and v18.16b, v18.16b, v8.16b | |
| 2027 | eor v5.16b, v10.16b, v9.16b | |
| 2028 | str q9, [x2], #16 | |
| 2029 | ext v10.16b, v18.16b, v18.16b, #8 | |
| 2030 | cmtst v9.2d, v9.2d, v6.2d | |
| 2031 | and v9.16b, v9.16b, v8.16b | |
| 2032 | eor v10.16b, v17.16b, v10.16b | |
| 2033 | cmtst v17.2d, v10.2d, v6.2d | |
| 2034 | eor v6.16b, v16.16b, v10.16b | |
| 2035 | str q10, [x2], #16 | |
| 2036 | ext v9.16b, v9.16b, v9.16b, #8 | |
| 2037 | add v10.2d, v10.2d, v10.2d | |
| 2038 | eor v9.16b, v10.16b, v9.16b | |
| 2039 | str q9, [x2], #16 | |
| 2040 | eor v7.16b, v7.16b, v9.16b | |
| 2041 | add v9.2d, v9.2d, v9.2d | |
| 2042 | and v8.16b, v17.16b, v8.16b | |
| 2043 | ext v8.16b, v8.16b, v8.16b, #8 | |
| 2044 | eor v8.16b, v9.16b, v8.16b | |
| 2045 | str q8, [x2] // next round tweak | |
| 2046 | ||
| 2047 | bl _bsaes_decrypt8 | |
| 2048 | ||
| 2049 | eor v6.16b, v6.16b, v13.16b | |
| 2050 | eor v0.16b, v0.16b, v11.16b | |
| 2051 | ldr q8, [x0], #16 | |
| 2052 | eor v7.16b, v7.16b, v8.16b | |
| 2053 | str q0, [x21], #16 | |
| 2054 | eor v0.16b, v1.16b, v12.16b | |
| 2055 | ldr q1, [x0], #16 | |
| 2056 | eor v1.16b, v3.16b, v1.16b | |
| 2057 | subs x22, x22, #0x80 | |
| 2058 | eor v2.16b, v2.16b, v15.16b | |
| 2059 | eor v3.16b, v4.16b, v14.16b | |
| 2060 | ldr q4, [x0], #16 | |
| 2061 | str q0, [x21], #16 | |
| 2062 | ldr q11, [x0] // next round tweak | |
| 2063 | eor v0.16b, v5.16b, v4.16b | |
| 2064 | str q6, [x21], #16 | |
| 2065 | str q3, [x21], #16 | |
| 2066 | str q2, [x21], #16 | |
| 2067 | str q7, [x21], #16 | |
| 2068 | str q1, [x21], #16 | |
| 2069 | str q0, [x21], #16 | |
| 2070 | bpl .Lxts_dec_loop | |
| 2071 | ||
| 2072 | .Lxts_dec_short: | |
| 2073 | adds x22, x22, #0x70 | |
| 2074 | bmi .Lxts_dec_done | |
| 2075 | ||
| 2076 | ldr q8, .Lxts_magic | |
| 2077 | sshr v1.2d, v11.2d, #63 | |
| 2078 | add v2.2d, v11.2d, v11.2d | |
| 2079 | ldr q9, .Lxts_magic+16 | |
| 2080 | subs x22, x22, #0x10 | |
| 2081 | ldr q0, [x20], #16 | |
| 2082 | and v1.16b, v1.16b, v8.16b | |
| 2083 | cmtst v3.2d, v11.2d, v9.2d | |
| 2084 | ext v1.16b, v1.16b, v1.16b, #8 | |
| 2085 | and v3.16b, v3.16b, v8.16b | |
| 2086 | eor v12.16b, v2.16b, v1.16b | |
| 2087 | ext v1.16b, v3.16b, v3.16b, #8 | |
| 2088 | add v2.2d, v12.2d, v12.2d | |
| 2089 | cmtst v3.2d, v12.2d, v9.2d | |
| 2090 | eor v13.16b, v2.16b, v1.16b | |
| 2091 | and v22.16b, v3.16b, v8.16b | |
| 2092 | bmi .Lxts_dec_1 | |
| 2093 | ||
| 2094 | ext v2.16b, v22.16b, v22.16b, #8 | |
| 2095 | add v3.2d, v13.2d, v13.2d | |
| 2096 | ldr q1, [x20], #16 | |
| 2097 | cmtst v4.2d, v13.2d, v9.2d | |
| 2098 | subs x22, x22, #0x10 | |
| 2099 | eor v14.16b, v3.16b, v2.16b | |
| 2100 | and v23.16b, v4.16b, v8.16b | |
| 2101 | bmi .Lxts_dec_2 | |
| 2102 | ||
| 2103 | ext v3.16b, v23.16b, v23.16b, #8 | |
| 2104 | add v4.2d, v14.2d, v14.2d | |
| 2105 | ldr q2, [x20], #16 | |
| 2106 | cmtst v5.2d, v14.2d, v9.2d | |
| 2107 | eor v0.16b, v0.16b, v11.16b | |
| 2108 | subs x22, x22, #0x10 | |
| 2109 | eor v15.16b, v4.16b, v3.16b | |
| 2110 | and v24.16b, v5.16b, v8.16b | |
| 2111 | bmi .Lxts_dec_3 | |
| 2112 | ||
| 2113 | ext v4.16b, v24.16b, v24.16b, #8 | |
| 2114 | add v5.2d, v15.2d, v15.2d | |
| 2115 | ldr q3, [x20], #16 | |
| 2116 | cmtst v6.2d, v15.2d, v9.2d | |
| 2117 | eor v1.16b, v1.16b, v12.16b | |
| 2118 | subs x22, x22, #0x10 | |
| 2119 | eor v16.16b, v5.16b, v4.16b | |
| 2120 | and v25.16b, v6.16b, v8.16b | |
| 2121 | bmi .Lxts_dec_4 | |
| 2122 | ||
| 2123 | ext v5.16b, v25.16b, v25.16b, #8 | |
| 2124 | add v6.2d, v16.2d, v16.2d | |
| 2125 | add x0, x19, #16 | |
| 2126 | cmtst v7.2d, v16.2d, v9.2d | |
| 2127 | ldr q4, [x20], #16 | |
| 2128 | eor v2.16b, v2.16b, v13.16b | |
| 2129 | str q16, [x0], #16 | |
| 2130 | subs x22, x22, #0x10 | |
| 2131 | eor v17.16b, v6.16b, v5.16b | |
| 2132 | and v26.16b, v7.16b, v8.16b | |
| 2133 | bmi .Lxts_dec_5 | |
| 2134 | ||
| 2135 | ext v7.16b, v26.16b, v26.16b, #8 | |
| 2136 | add v18.2d, v17.2d, v17.2d | |
| 2137 | ldr q5, [x20], #16 | |
| 2138 | eor v3.16b, v3.16b, v14.16b | |
| 2139 | str q17, [x0], #16 | |
| 2140 | subs x22, x22, #0x10 | |
| 2141 | eor v18.16b, v18.16b, v7.16b | |
| 2142 | bmi .Lxts_dec_6 | |
| 2143 | ||
| 2144 | ldr q6, [x20], #16 | |
| 2145 | eor v4.16b, v4.16b, v15.16b | |
| 2146 | eor v5.16b, v5.16b, v16.16b | |
| 2147 | str q18, [x0] // next round tweak | |
| 2148 | mov x9, sp // pass key schedule | |
| 2149 | mov x10, x1 | |
| 2150 | add x0, x19, #16 | |
| 2151 | sub x22, x22, #0x10 | |
| 2152 | eor v6.16b, v6.16b, v17.16b | |
| 2153 | ||
| 2154 | bl _bsaes_decrypt8 | |
| 2155 | ||
| 2156 | ldr q16, [x0], #16 | |
| 2157 | eor v0.16b, v0.16b, v11.16b | |
| 2158 | eor v1.16b, v1.16b, v12.16b | |
| 2159 | ldr q17, [x0], #16 | |
| 2160 | eor v6.16b, v6.16b, v13.16b | |
| 2161 | eor v4.16b, v4.16b, v14.16b | |
| 2162 | eor v2.16b, v2.16b, v15.16b | |
| 2163 | ldr q11, [x0] // next round tweak | |
| 2164 | str q0, [x21], #16 | |
| 2165 | str q1, [x21], #16 | |
| 2166 | eor v0.16b, v7.16b, v16.16b | |
| 2167 | eor v1.16b, v3.16b, v17.16b | |
| 2168 | str q6, [x21], #16 | |
| 2169 | str q4, [x21], #16 | |
| 2170 | str q2, [x21], #16 | |
| 2171 | str q0, [x21], #16 | |
| 2172 | str q1, [x21], #16 | |
| 2173 | b .Lxts_dec_done | |
| 2174 | ||
| 2175 | .align 4 | |
| 2176 | .Lxts_dec_6: | |
| 2177 | eor v4.16b, v4.16b, v15.16b | |
| 2178 | eor v5.16b, v5.16b, v16.16b | |
| 2179 | mov x9, sp // pass key schedule | |
| 2180 | mov x10, x1 // pass rounds | |
| 2181 | add x0, x19, #16 | |
| 2182 | ||
| 2183 | bl _bsaes_decrypt8 | |
| 2184 | ||
| 2185 | ldr q16, [x0], #16 | |
| 2186 | eor v0.16b, v0.16b, v11.16b | |
| 2187 | eor v1.16b, v1.16b, v12.16b | |
| 2188 | eor v6.16b, v6.16b, v13.16b | |
| 2189 | eor v4.16b, v4.16b, v14.16b | |
| 2190 | ldr q11, [x0] // next round tweak | |
| 2191 | eor v2.16b, v2.16b, v15.16b | |
| 2192 | str q0, [x21], #16 | |
| 2193 | str q1, [x21], #16 | |
| 2194 | eor v0.16b, v7.16b, v16.16b | |
| 2195 | str q6, [x21], #16 | |
| 2196 | str q4, [x21], #16 | |
| 2197 | str q2, [x21], #16 | |
| 2198 | str q0, [x21], #16 | |
| 2199 | b .Lxts_dec_done | |
| 2200 | ||
| 2201 | .align 4 | |
| 2202 | .Lxts_dec_5: | |
| 2203 | eor v3.16b, v3.16b, v14.16b | |
| 2204 | eor v4.16b, v4.16b, v15.16b | |
| 2205 | mov x9, sp // pass key schedule | |
| 2206 | mov x10, x1 // pass rounds | |
| 2207 | add x0, x19, #16 | |
| 2208 | ||
| 2209 | bl _bsaes_decrypt8 | |
| 2210 | ||
| 2211 | eor v0.16b, v0.16b, v11.16b | |
| 2212 | eor v1.16b, v1.16b, v12.16b | |
| 2213 | ldr q11, [x0] // next round tweak | |
| 2214 | eor v6.16b, v6.16b, v13.16b | |
| 2215 | eor v4.16b, v4.16b, v14.16b | |
| 2216 | eor v2.16b, v2.16b, v15.16b | |
| 2217 | str q0, [x21], #16 | |
| 2218 | str q1, [x21], #16 | |
| 2219 | str q6, [x21], #16 | |
| 2220 | str q4, [x21], #16 | |
| 2221 | str q2, [x21], #16 | |
| 2222 | b .Lxts_dec_done | |
| 2223 | ||
| 2224 | .align 4 | |
| 2225 | .Lxts_dec_4: | |
| 2226 | eor v2.16b, v2.16b, v13.16b | |
| 2227 | eor v3.16b, v3.16b, v14.16b | |
| 2228 | mov x9, sp // pass key schedule | |
| 2229 | mov x10, x1 // pass rounds | |
| 2230 | add x0, x19, #16 | |
| 2231 | ||
| 2232 | bl _bsaes_decrypt8 | |
| 2233 | ||
| 2234 | eor v0.16b, v0.16b, v11.16b | |
| 2235 | eor v1.16b, v1.16b, v12.16b | |
| 2236 | eor v6.16b, v6.16b, v13.16b | |
| 2237 | eor v4.16b, v4.16b, v14.16b | |
| 2238 | mov v11.16b, v15.16b // next round tweak | |
| 2239 | str q0, [x21], #16 | |
| 2240 | str q1, [x21], #16 | |
| 2241 | str q6, [x21], #16 | |
| 2242 | str q4, [x21], #16 | |
| 2243 | b .Lxts_dec_done | |
| 2244 | ||
| 2245 | .align 4 | |
| 2246 | .Lxts_dec_3: | |
| 2247 | eor v1.16b, v1.16b, v12.16b | |
| 2248 | eor v2.16b, v2.16b, v13.16b | |
| 2249 | mov x9, sp // pass key schedule | |
| 2250 | mov x10, x1 // pass rounds | |
| 2251 | add x0, x19, #16 | |
| 2252 | ||
| 2253 | bl _bsaes_decrypt8 | |
| 2254 | ||
| 2255 | eor v0.16b, v0.16b, v11.16b | |
| 2256 | eor v1.16b, v1.16b, v12.16b | |
| 2257 | eor v6.16b, v6.16b, v13.16b | |
| 2258 | mov v11.16b, v14.16b // next round tweak | |
| 2259 | str q0, [x21], #16 | |
| 2260 | str q1, [x21], #16 | |
| 2261 | str q6, [x21], #16 | |
| 2262 | b .Lxts_dec_done | |
| 2263 | ||
| 2264 | .align 4 | |
| 2265 | .Lxts_dec_2: | |
| 2266 | eor v0.16b, v0.16b, v11.16b | |
| 2267 | eor v1.16b, v1.16b, v12.16b | |
| 2268 | mov x9, sp // pass key schedule | |
| 2269 | mov x10, x1 // pass rounds | |
| 2270 | add x0, x19, #16 | |
| 2271 | ||
| 2272 | bl _bsaes_decrypt8 | |
| 2273 | ||
| 2274 | eor v0.16b, v0.16b, v11.16b | |
| 2275 | eor v1.16b, v1.16b, v12.16b | |
| 2276 | mov v11.16b, v13.16b // next round tweak | |
| 2277 | str q0, [x21], #16 | |
| 2278 | str q1, [x21], #16 | |
| 2279 | b .Lxts_dec_done | |
| 2280 | ||
| 2281 | .align 4 | |
| 2282 | .Lxts_dec_1: | |
| 2283 | eor v0.16b, v0.16b, v11.16b | |
| 2284 | sub x0, sp, #16 | |
| 2285 | sub x1, sp, #16 | |
| 2286 | mov x2, x23 | |
| 2287 | mov v13.d[0], v11.d[1] // just in case AES_decrypt corrupts top half of callee-saved SIMD registers | |
| 2288 | mov v14.d[0], v12.d[1] | |
| 2289 | str q0, [sp, #-16]! | |
| 2290 | ||
| 2291 | bl AES_decrypt | |
| 2292 | ||
| 2293 | ldr q0, [sp], #16 | |
| 2294 | trn1 v13.2d, v11.2d, v13.2d | |
| 2295 | trn1 v11.2d, v12.2d, v14.2d // next round tweak | |
| 2296 | eor v0.16b, v0.16b, v13.16b | |
| 2297 | str q0, [x21], #16 | |
| 2298 | ||
| 2299 | .Lxts_dec_done: | |
| 2300 | adds x22, x22, #0x10 | |
| 2301 | beq .Lxts_dec_ret | |
| 2302 | ||
| 2303 | // calculate one round of extra tweak for the stolen ciphertext | |
| 2304 | ldr q8, .Lxts_magic | |
| 2305 | sshr v6.2d, v11.2d, #63 | |
| 2306 | and v6.16b, v6.16b, v8.16b | |
| 2307 | add v12.2d, v11.2d, v11.2d | |
| 2308 | ext v6.16b, v6.16b, v6.16b, #8 | |
| 2309 | eor v12.16b, v12.16b, v6.16b | |
| 2310 | ||
| 2311 | // perform the final decryption with the last tweak value | |
| 2312 | ldr q0, [x20], #16 | |
| 2313 | eor v0.16b, v0.16b, v12.16b | |
| 2314 | str q0, [sp, #-16]! | |
| 2315 | mov x0, sp | |
| 2316 | mov x1, sp | |
| 2317 | mov x2, x23 | |
| 2318 | mov v13.d[0], v11.d[1] // just in case AES_decrypt corrupts top half of callee-saved SIMD registers | |
| 2319 | mov v14.d[0], v12.d[1] | |
| 2320 | ||
| 2321 | bl AES_decrypt | |
| 2322 | ||
| 2323 | trn1 v12.2d, v12.2d, v14.2d | |
| 2324 | trn1 v11.2d, v11.2d, v13.2d | |
| 2325 | ldr q0, [sp], #16 | |
| 2326 | eor v0.16b, v0.16b, v12.16b | |
| 2327 | str q0, [x21] | |
| 2328 | ||
| 2329 | mov x6, x21 | |
| 2330 | // Penultimate ciphertext block produces final plaintext part-block | |
| 2331 | // plus remaining part of final ciphertext block. Move plaintext part | |
| a024ab98 | 2332 | // to final position and reuse penultimate plaintext block buffer to |
| 82551af5 BA |
2333 | // construct final ciphertext block |
| 2334 | .Lxts_dec_steal: | |
| 2335 | ldrb w1, [x21] | |
| 2336 | ldrb w0, [x20], #1 | |
| 2337 | strb w1, [x21, #0x10] | |
| 2338 | strb w0, [x21], #1 | |
| 2339 | ||
| 2340 | subs x22, x22, #1 | |
| 2341 | bhi .Lxts_dec_steal | |
| 2342 | ||
| 2343 | // Finally decrypt the penultimate plaintext block using the | |
| 2344 | // penultimate tweak | |
| 2345 | ldr q0, [x6] | |
| 2346 | eor v0.16b, v0.16b, v11.16b | |
| 2347 | str q0, [sp, #-16]! | |
| 2348 | mov x0, sp | |
| 2349 | mov x1, sp | |
| 2350 | mov x2, x23 | |
| 2351 | mov x21, x6 | |
| 2352 | ||
| 2353 | bl AES_decrypt | |
| 2354 | ||
| 2355 | trn1 v11.2d, v11.2d, v13.2d | |
| 2356 | ldr q0, [sp], #16 | |
| 2357 | eor v0.16b, v0.16b, v11.16b | |
| 2358 | str q0, [x21] | |
| 2359 | ||
| 2360 | .Lxts_dec_ret: | |
| 2361 | ||
| 2362 | movi v0.16b, #0 | |
| 2363 | movi v1.16b, #0 | |
| 2364 | .Lxts_dec_bzero: // wipe key schedule | |
| 2365 | stp q0, q1, [sp], #32 | |
| 2366 | cmp sp, x19 | |
| 2367 | bne .Lxts_dec_bzero | |
| 2368 | ||
| 2369 | ldp x19, x20, [sp, #80] | |
| 2370 | ldp x21, x22, [sp, #96] | |
| 2371 | ldr x23, [sp, #112] | |
| 2372 | ldp d8, d9, [sp, #128] | |
| 2373 | ldp d10, d11, [sp, #144] | |
| 2374 | ldp d12, d13, [sp, #160] | |
| 2375 | ldp d14, d15, [sp, #176] | |
| 5adddcd9 | 2376 | ldp x29, x30, [sp], #192 |
| 82551af5 BA |
2377 | ret |
| 2378 | .size ossl_bsaes_xts_decrypt,.-ossl_bsaes_xts_decrypt |