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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 | /* * Intel SHA Extensions optimized implementation of a SHA-1 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 */ /* gcc conversion */ #define FRAME_SIZE 32 /* space for 2x16 bytes */ #define ABCD %xmm0 #define E0 %xmm1 /* Need two E's b/c they ping pong */ #define E1 %xmm2 #define MSG0 %xmm3 #define MSG1 %xmm4 #define MSG2 %xmm5 #define MSG3 %xmm6 #define SHUF_MASK %xmm7 /* * Intel SHA Extensions optimized implementation of a SHA-1 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 sha1_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 SYM_FUNC_START(sha1_ni_transform) push %rbp mov %rsp, %rbp sub $FRAME_SIZE, %rsp and $~0xF, %rsp shl $6, NUM_BLKS /* convert to bytes */ jz .Ldone_hash add DATA_PTR, NUM_BLKS /* pointer to end of data */ /* load initial hash values */ pinsrd $3, 1*16(DIGEST_PTR), E0 movdqu 0*16(DIGEST_PTR), ABCD pand UPPER_WORD_MASK(%rip), E0 pshufd $0x1B, ABCD, ABCD movdqa PSHUFFLE_BYTE_FLIP_MASK(%rip), SHUF_MASK .Lloop0: /* Save hash values for addition after rounds */ movdqa E0, (0*16)(%rsp) movdqa ABCD, (1*16)(%rsp) /* Rounds 0-3 */ movdqu 0*16(DATA_PTR), MSG0 pshufb SHUF_MASK, MSG0 paddd MSG0, E0 movdqa ABCD, E1 sha1rnds4 $0, E0, ABCD /* Rounds 4-7 */ movdqu 1*16(DATA_PTR), MSG1 pshufb SHUF_MASK, MSG1 sha1nexte MSG1, E1 movdqa ABCD, E0 sha1rnds4 $0, E1, ABCD sha1msg1 MSG1, MSG0 /* Rounds 8-11 */ movdqu 2*16(DATA_PTR), MSG2 pshufb SHUF_MASK, MSG2 sha1nexte MSG2, E0 movdqa ABCD, E1 sha1rnds4 $0, E0, ABCD sha1msg1 MSG2, MSG1 pxor MSG2, MSG0 /* Rounds 12-15 */ movdqu 3*16(DATA_PTR), MSG3 pshufb SHUF_MASK, MSG3 sha1nexte MSG3, E1 movdqa ABCD, E0 sha1msg2 MSG3, MSG0 sha1rnds4 $0, E1, ABCD sha1msg1 MSG3, MSG2 pxor MSG3, MSG1 /* Rounds 16-19 */ sha1nexte MSG0, E0 movdqa ABCD, E1 sha1msg2 MSG0, MSG1 sha1rnds4 $0, E0, ABCD sha1msg1 MSG0, MSG3 pxor MSG0, MSG2 /* Rounds 20-23 */ sha1nexte MSG1, E1 movdqa ABCD, E0 sha1msg2 MSG1, MSG2 sha1rnds4 $1, E1, ABCD sha1msg1 MSG1, MSG0 pxor MSG1, MSG3 /* Rounds 24-27 */ sha1nexte MSG2, E0 movdqa ABCD, E1 sha1msg2 MSG2, MSG3 sha1rnds4 $1, E0, ABCD sha1msg1 MSG2, MSG1 pxor MSG2, MSG0 /* Rounds 28-31 */ sha1nexte MSG3, E1 movdqa ABCD, E0 sha1msg2 MSG3, MSG0 sha1rnds4 $1, E1, ABCD sha1msg1 MSG3, MSG2 pxor MSG3, MSG1 /* Rounds 32-35 */ sha1nexte MSG0, E0 movdqa ABCD, E1 sha1msg2 MSG0, MSG1 sha1rnds4 $1, E0, ABCD sha1msg1 MSG0, MSG3 pxor MSG0, MSG2 /* Rounds 36-39 */ sha1nexte MSG1, E1 movdqa ABCD, E0 sha1msg2 MSG1, MSG2 sha1rnds4 $1, E1, ABCD sha1msg1 MSG1, MSG0 pxor MSG1, MSG3 /* Rounds 40-43 */ sha1nexte MSG2, E0 movdqa ABCD, E1 sha1msg2 MSG2, MSG3 sha1rnds4 $2, E0, ABCD sha1msg1 MSG2, MSG1 pxor MSG2, MSG0 /* Rounds 44-47 */ sha1nexte MSG3, E1 movdqa ABCD, E0 sha1msg2 MSG3, MSG0 sha1rnds4 $2, E1, ABCD sha1msg1 MSG3, MSG2 pxor MSG3, MSG1 /* Rounds 48-51 */ sha1nexte MSG0, E0 movdqa ABCD, E1 sha1msg2 MSG0, MSG1 sha1rnds4 $2, E0, ABCD sha1msg1 MSG0, MSG3 pxor MSG0, MSG2 /* Rounds 52-55 */ sha1nexte MSG1, E1 movdqa ABCD, E0 sha1msg2 MSG1, MSG2 sha1rnds4 $2, E1, ABCD sha1msg1 MSG1, MSG0 pxor MSG1, MSG3 /* Rounds 56-59 */ sha1nexte MSG2, E0 movdqa ABCD, E1 sha1msg2 MSG2, MSG3 sha1rnds4 $2, E0, ABCD sha1msg1 MSG2, MSG1 pxor MSG2, MSG0 /* Rounds 60-63 */ sha1nexte MSG3, E1 movdqa ABCD, E0 sha1msg2 MSG3, MSG0 sha1rnds4 $3, E1, ABCD sha1msg1 MSG3, MSG2 pxor MSG3, MSG1 /* Rounds 64-67 */ sha1nexte MSG0, E0 movdqa ABCD, E1 sha1msg2 MSG0, MSG1 sha1rnds4 $3, E0, ABCD sha1msg1 MSG0, MSG3 pxor MSG0, MSG2 /* Rounds 68-71 */ sha1nexte MSG1, E1 movdqa ABCD, E0 sha1msg2 MSG1, MSG2 sha1rnds4 $3, E1, ABCD pxor MSG1, MSG3 /* Rounds 72-75 */ sha1nexte MSG2, E0 movdqa ABCD, E1 sha1msg2 MSG2, MSG3 sha1rnds4 $3, E0, ABCD /* Rounds 76-79 */ sha1nexte MSG3, E1 movdqa ABCD, E0 sha1rnds4 $3, E1, ABCD /* Add current hash values with previously saved */ sha1nexte (0*16)(%rsp), E0 paddd (1*16)(%rsp), ABCD /* 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, ABCD, ABCD movdqu ABCD, 0*16(DIGEST_PTR) pextrd $3, E0, 1*16(DIGEST_PTR) .Ldone_hash: mov %rbp, %rsp pop %rbp RET SYM_FUNC_END(sha1_ni_transform) .section .rodata.cst16.PSHUFFLE_BYTE_FLIP_MASK, "aM", @progbits, 16 .align 16 PSHUFFLE_BYTE_FLIP_MASK: .octa 0x000102030405060708090a0b0c0d0e0f .section .rodata.cst16.UPPER_WORD_MASK, "aM", @progbits, 16 .align 16 UPPER_WORD_MASK: .octa 0xFFFFFFFF000000000000000000000000 |