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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 | /* * Intel SHA Extensions optimized implementation of a SHA-256 update function * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2015 Intel Corporation. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * Contact Information: * Sean Gulley <sean.m.gulley@intel.com> * Tim Chen <tim.c.chen@linux.intel.com> * * BSD LICENSE * * Copyright(c) 2015 Intel Corporation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #include <linux/linkage.h> #define DIGEST_PTR %rdi /* 1st arg */ #define DATA_PTR %rsi /* 2nd arg */ #define NUM_BLKS %rdx /* 3rd arg */ #define SHA256CONSTANTS %rax #define MSG %xmm0 #define STATE0 %xmm1 #define STATE1 %xmm2 #define MSGTMP0 %xmm3 #define MSGTMP1 %xmm4 #define MSGTMP2 %xmm5 #define MSGTMP3 %xmm6 #define MSGTMP4 %xmm7 #define SHUF_MASK %xmm8 #define ABEF_SAVE %xmm9 #define CDGH_SAVE %xmm10 /* * Intel SHA Extensions optimized implementation of a SHA-256 update function * * The function takes a pointer to the current hash values, a pointer to the * input data, and a number of 64 byte blocks to process. Once all blocks have * been processed, the digest pointer is updated with the resulting hash value. * The function only processes complete blocks, there is no functionality to * store partial blocks. All message padding and hash value initialization must * be done outside the update function. * * The indented lines in the loop are instructions related to rounds processing. * The non-indented lines are instructions related to the message schedule. * * void sha256_ni_transform(uint32_t *digest, const void *data, uint32_t numBlocks); * digest : pointer to digest * data: pointer to input data * numBlocks: Number of blocks to process */ .text .align 32 ENTRY(sha256_ni_transform) shl $6, NUM_BLKS /* convert to bytes */ jz .Ldone_hash add DATA_PTR, NUM_BLKS /* pointer to end of data */ /* * load initial hash values * Need to reorder these appropriately * DCBA, HGFE -> ABEF, CDGH */ movdqu 0*16(DIGEST_PTR), STATE0 movdqu 1*16(DIGEST_PTR), STATE1 pshufd $0xB1, STATE0, STATE0 /* CDAB */ pshufd $0x1B, STATE1, STATE1 /* EFGH */ movdqa STATE0, MSGTMP4 palignr $8, STATE1, STATE0 /* ABEF */ pblendw $0xF0, MSGTMP4, STATE1 /* CDGH */ movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK lea K256(%rip), SHA256CONSTANTS .Lloop0: /* Save hash values for addition after rounds */ movdqa STATE0, ABEF_SAVE movdqa STATE1, CDGH_SAVE /* Rounds 0-3 */ movdqu 0*16(DATA_PTR), MSG pshufb SHUF_MASK, MSG movdqa MSG, MSGTMP0 paddd 0*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 /* Rounds 4-7 */ movdqu 1*16(DATA_PTR), MSG pshufb SHUF_MASK, MSG movdqa MSG, MSGTMP1 paddd 1*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP1, MSGTMP0 /* Rounds 8-11 */ movdqu 2*16(DATA_PTR), MSG pshufb SHUF_MASK, MSG movdqa MSG, MSGTMP2 paddd 2*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP2, MSGTMP1 /* Rounds 12-15 */ movdqu 3*16(DATA_PTR), MSG pshufb SHUF_MASK, MSG movdqa MSG, MSGTMP3 paddd 3*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP3, MSGTMP4 palignr $4, MSGTMP2, MSGTMP4 paddd MSGTMP4, MSGTMP0 sha256msg2 MSGTMP3, MSGTMP0 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP3, MSGTMP2 /* Rounds 16-19 */ movdqa MSGTMP0, MSG paddd 4*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP0, MSGTMP4 palignr $4, MSGTMP3, MSGTMP4 paddd MSGTMP4, MSGTMP1 sha256msg2 MSGTMP0, MSGTMP1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP0, MSGTMP3 /* Rounds 20-23 */ movdqa MSGTMP1, MSG paddd 5*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP1, MSGTMP4 palignr $4, MSGTMP0, MSGTMP4 paddd MSGTMP4, MSGTMP2 sha256msg2 MSGTMP1, MSGTMP2 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP1, MSGTMP0 /* Rounds 24-27 */ movdqa MSGTMP2, MSG paddd 6*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP2, MSGTMP4 palignr $4, MSGTMP1, MSGTMP4 paddd MSGTMP4, MSGTMP3 sha256msg2 MSGTMP2, MSGTMP3 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP2, MSGTMP1 /* Rounds 28-31 */ movdqa MSGTMP3, MSG paddd 7*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP3, MSGTMP4 palignr $4, MSGTMP2, MSGTMP4 paddd MSGTMP4, MSGTMP0 sha256msg2 MSGTMP3, MSGTMP0 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP3, MSGTMP2 /* Rounds 32-35 */ movdqa MSGTMP0, MSG paddd 8*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP0, MSGTMP4 palignr $4, MSGTMP3, MSGTMP4 paddd MSGTMP4, MSGTMP1 sha256msg2 MSGTMP0, MSGTMP1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP0, MSGTMP3 /* Rounds 36-39 */ movdqa MSGTMP1, MSG paddd 9*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP1, MSGTMP4 palignr $4, MSGTMP0, MSGTMP4 paddd MSGTMP4, MSGTMP2 sha256msg2 MSGTMP1, MSGTMP2 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP1, MSGTMP0 /* Rounds 40-43 */ movdqa MSGTMP2, MSG paddd 10*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP2, MSGTMP4 palignr $4, MSGTMP1, MSGTMP4 paddd MSGTMP4, MSGTMP3 sha256msg2 MSGTMP2, MSGTMP3 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP2, MSGTMP1 /* Rounds 44-47 */ movdqa MSGTMP3, MSG paddd 11*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP3, MSGTMP4 palignr $4, MSGTMP2, MSGTMP4 paddd MSGTMP4, MSGTMP0 sha256msg2 MSGTMP3, MSGTMP0 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP3, MSGTMP2 /* Rounds 48-51 */ movdqa MSGTMP0, MSG paddd 12*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP0, MSGTMP4 palignr $4, MSGTMP3, MSGTMP4 paddd MSGTMP4, MSGTMP1 sha256msg2 MSGTMP0, MSGTMP1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 sha256msg1 MSGTMP0, MSGTMP3 /* Rounds 52-55 */ movdqa MSGTMP1, MSG paddd 13*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP1, MSGTMP4 palignr $4, MSGTMP0, MSGTMP4 paddd MSGTMP4, MSGTMP2 sha256msg2 MSGTMP1, MSGTMP2 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 /* Rounds 56-59 */ movdqa MSGTMP2, MSG paddd 14*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 movdqa MSGTMP2, MSGTMP4 palignr $4, MSGTMP1, MSGTMP4 paddd MSGTMP4, MSGTMP3 sha256msg2 MSGTMP2, MSGTMP3 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 /* Rounds 60-63 */ movdqa MSGTMP3, MSG paddd 15*16(SHA256CONSTANTS), MSG sha256rnds2 STATE0, STATE1 pshufd $0x0E, MSG, MSG sha256rnds2 STATE1, STATE0 /* Add current hash values with previously saved */ paddd ABEF_SAVE, STATE0 paddd CDGH_SAVE, STATE1 /* Increment data pointer and loop if more to process */ add $64, DATA_PTR cmp NUM_BLKS, DATA_PTR jne .Lloop0 /* Write hash values back in the correct order */ pshufd $0x1B, STATE0, STATE0 /* FEBA */ pshufd $0xB1, STATE1, STATE1 /* DCHG */ movdqa STATE0, MSGTMP4 pblendw $0xF0, STATE1, STATE0 /* DCBA */ palignr $8, MSGTMP4, STATE1 /* HGFE */ movdqu STATE0, 0*16(DIGEST_PTR) movdqu STATE1, 1*16(DIGEST_PTR) .Ldone_hash: ret ENDPROC(sha256_ni_transform) .data .align 64 K256: .long 0x428a2f98,0x71374491,0xb5c0fbcf,0xe9b5dba5 .long 0x3956c25b,0x59f111f1,0x923f82a4,0xab1c5ed5 .long 0xd807aa98,0x12835b01,0x243185be,0x550c7dc3 .long 0x72be5d74,0x80deb1fe,0x9bdc06a7,0xc19bf174 .long 0xe49b69c1,0xefbe4786,0x0fc19dc6,0x240ca1cc .long 0x2de92c6f,0x4a7484aa,0x5cb0a9dc,0x76f988da .long 0x983e5152,0xa831c66d,0xb00327c8,0xbf597fc7 .long 0xc6e00bf3,0xd5a79147,0x06ca6351,0x14292967 .long 0x27b70a85,0x2e1b2138,0x4d2c6dfc,0x53380d13 .long 0x650a7354,0x766a0abb,0x81c2c92e,0x92722c85 .long 0xa2bfe8a1,0xa81a664b,0xc24b8b70,0xc76c51a3 .long 0xd192e819,0xd6990624,0xf40e3585,0x106aa070 .long 0x19a4c116,0x1e376c08,0x2748774c,0x34b0bcb5 .long 0x391c0cb3,0x4ed8aa4a,0x5b9cca4f,0x682e6ff3 .long 0x748f82ee,0x78a5636f,0x84c87814,0x8cc70208 .long 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2 PSHUFFLE_BYTE_FLIP_MASK: .octa 0x0c0d0e0f08090a0b0405060700010203 |