twofish-avx-x86_64-asm_64.S (9014B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Twofish Cipher 8-way parallel algorithm (AVX/x86_64) 4 * 5 * Copyright (C) 2012 Johannes Goetzfried 6 * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> 7 * 8 * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi> 9 */ 10 11#include <linux/linkage.h> 12#include <asm/frame.h> 13#include "glue_helper-asm-avx.S" 14 15.file "twofish-avx-x86_64-asm_64.S" 16 17.section .rodata.cst16.bswap128_mask, "aM", @progbits, 16 18.align 16 19.Lbswap128_mask: 20 .byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 21 22.text 23 24/* structure of crypto context */ 25#define s0 0 26#define s1 1024 27#define s2 2048 28#define s3 3072 29#define w 4096 30#define k 4128 31 32/********************************************************************** 33 8-way AVX twofish 34 **********************************************************************/ 35#define CTX %rdi 36 37#define RA1 %xmm0 38#define RB1 %xmm1 39#define RC1 %xmm2 40#define RD1 %xmm3 41 42#define RA2 %xmm4 43#define RB2 %xmm5 44#define RC2 %xmm6 45#define RD2 %xmm7 46 47#define RX0 %xmm8 48#define RY0 %xmm9 49 50#define RX1 %xmm10 51#define RY1 %xmm11 52 53#define RK1 %xmm12 54#define RK2 %xmm13 55 56#define RT %xmm14 57#define RR %xmm15 58 59#define RID1 %r13 60#define RID1d %r13d 61#define RID2 %rsi 62#define RID2d %esi 63 64#define RGI1 %rdx 65#define RGI1bl %dl 66#define RGI1bh %dh 67#define RGI2 %rcx 68#define RGI2bl %cl 69#define RGI2bh %ch 70 71#define RGI3 %rax 72#define RGI3bl %al 73#define RGI3bh %ah 74#define RGI4 %rbx 75#define RGI4bl %bl 76#define RGI4bh %bh 77 78#define RGS1 %r8 79#define RGS1d %r8d 80#define RGS2 %r9 81#define RGS2d %r9d 82#define RGS3 %r10 83#define RGS3d %r10d 84 85 86#define lookup_32bit(t0, t1, t2, t3, src, dst, interleave_op, il_reg) \ 87 movzbl src ## bl, RID1d; \ 88 movzbl src ## bh, RID2d; \ 89 shrq $16, src; \ 90 movl t0(CTX, RID1, 4), dst ## d; \ 91 movl t1(CTX, RID2, 4), RID2d; \ 92 movzbl src ## bl, RID1d; \ 93 xorl RID2d, dst ## d; \ 94 movzbl src ## bh, RID2d; \ 95 interleave_op(il_reg); \ 96 xorl t2(CTX, RID1, 4), dst ## d; \ 97 xorl t3(CTX, RID2, 4), dst ## d; 98 99#define dummy(d) /* do nothing */ 100 101#define shr_next(reg) \ 102 shrq $16, reg; 103 104#define G(gi1, gi2, x, t0, t1, t2, t3) \ 105 lookup_32bit(t0, t1, t2, t3, ##gi1, RGS1, shr_next, ##gi1); \ 106 lookup_32bit(t0, t1, t2, t3, ##gi2, RGS3, shr_next, ##gi2); \ 107 \ 108 lookup_32bit(t0, t1, t2, t3, ##gi1, RGS2, dummy, none); \ 109 shlq $32, RGS2; \ 110 orq RGS1, RGS2; \ 111 lookup_32bit(t0, t1, t2, t3, ##gi2, RGS1, dummy, none); \ 112 shlq $32, RGS1; \ 113 orq RGS1, RGS3; 114 115#define round_head_2(a, b, x1, y1, x2, y2) \ 116 vmovq b ## 1, RGI3; \ 117 vpextrq $1, b ## 1, RGI4; \ 118 \ 119 G(RGI1, RGI2, x1, s0, s1, s2, s3); \ 120 vmovq a ## 2, RGI1; \ 121 vpextrq $1, a ## 2, RGI2; \ 122 vmovq RGS2, x1; \ 123 vpinsrq $1, RGS3, x1, x1; \ 124 \ 125 G(RGI3, RGI4, y1, s1, s2, s3, s0); \ 126 vmovq b ## 2, RGI3; \ 127 vpextrq $1, b ## 2, RGI4; \ 128 vmovq RGS2, y1; \ 129 vpinsrq $1, RGS3, y1, y1; \ 130 \ 131 G(RGI1, RGI2, x2, s0, s1, s2, s3); \ 132 vmovq RGS2, x2; \ 133 vpinsrq $1, RGS3, x2, x2; \ 134 \ 135 G(RGI3, RGI4, y2, s1, s2, s3, s0); \ 136 vmovq RGS2, y2; \ 137 vpinsrq $1, RGS3, y2, y2; 138 139#define encround_tail(a, b, c, d, x, y, prerotate) \ 140 vpaddd x, y, x; \ 141 vpaddd x, RK1, RT;\ 142 prerotate(b); \ 143 vpxor RT, c, c; \ 144 vpaddd y, x, y; \ 145 vpaddd y, RK2, y; \ 146 vpsrld $1, c, RT; \ 147 vpslld $(32 - 1), c, c; \ 148 vpor c, RT, c; \ 149 vpxor d, y, d; \ 150 151#define decround_tail(a, b, c, d, x, y, prerotate) \ 152 vpaddd x, y, x; \ 153 vpaddd x, RK1, RT;\ 154 prerotate(a); \ 155 vpxor RT, c, c; \ 156 vpaddd y, x, y; \ 157 vpaddd y, RK2, y; \ 158 vpxor d, y, d; \ 159 vpsrld $1, d, y; \ 160 vpslld $(32 - 1), d, d; \ 161 vpor d, y, d; \ 162 163#define rotate_1l(x) \ 164 vpslld $1, x, RR; \ 165 vpsrld $(32 - 1), x, x; \ 166 vpor x, RR, x; 167 168#define preload_rgi(c) \ 169 vmovq c, RGI1; \ 170 vpextrq $1, c, RGI2; 171 172#define encrypt_round(n, a, b, c, d, preload, prerotate) \ 173 vbroadcastss (k+4*(2*(n)))(CTX), RK1; \ 174 vbroadcastss (k+4*(2*(n)+1))(CTX), RK2; \ 175 round_head_2(a, b, RX0, RY0, RX1, RY1); \ 176 encround_tail(a ## 1, b ## 1, c ## 1, d ## 1, RX0, RY0, prerotate); \ 177 preload(c ## 1); \ 178 encround_tail(a ## 2, b ## 2, c ## 2, d ## 2, RX1, RY1, prerotate); 179 180#define decrypt_round(n, a, b, c, d, preload, prerotate) \ 181 vbroadcastss (k+4*(2*(n)))(CTX), RK1; \ 182 vbroadcastss (k+4*(2*(n)+1))(CTX), RK2; \ 183 round_head_2(a, b, RX0, RY0, RX1, RY1); \ 184 decround_tail(a ## 1, b ## 1, c ## 1, d ## 1, RX0, RY0, prerotate); \ 185 preload(c ## 1); \ 186 decround_tail(a ## 2, b ## 2, c ## 2, d ## 2, RX1, RY1, prerotate); 187 188#define encrypt_cycle(n) \ 189 encrypt_round((2*n), RA, RB, RC, RD, preload_rgi, rotate_1l); \ 190 encrypt_round(((2*n) + 1), RC, RD, RA, RB, preload_rgi, rotate_1l); 191 192#define encrypt_cycle_last(n) \ 193 encrypt_round((2*n), RA, RB, RC, RD, preload_rgi, rotate_1l); \ 194 encrypt_round(((2*n) + 1), RC, RD, RA, RB, dummy, dummy); 195 196#define decrypt_cycle(n) \ 197 decrypt_round(((2*n) + 1), RC, RD, RA, RB, preload_rgi, rotate_1l); \ 198 decrypt_round((2*n), RA, RB, RC, RD, preload_rgi, rotate_1l); 199 200#define decrypt_cycle_last(n) \ 201 decrypt_round(((2*n) + 1), RC, RD, RA, RB, preload_rgi, rotate_1l); \ 202 decrypt_round((2*n), RA, RB, RC, RD, dummy, dummy); 203 204#define transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ 205 vpunpckldq x1, x0, t0; \ 206 vpunpckhdq x1, x0, t2; \ 207 vpunpckldq x3, x2, t1; \ 208 vpunpckhdq x3, x2, x3; \ 209 \ 210 vpunpcklqdq t1, t0, x0; \ 211 vpunpckhqdq t1, t0, x1; \ 212 vpunpcklqdq x3, t2, x2; \ 213 vpunpckhqdq x3, t2, x3; 214 215#define inpack_blocks(x0, x1, x2, x3, wkey, t0, t1, t2) \ 216 vpxor x0, wkey, x0; \ 217 vpxor x1, wkey, x1; \ 218 vpxor x2, wkey, x2; \ 219 vpxor x3, wkey, x3; \ 220 \ 221 transpose_4x4(x0, x1, x2, x3, t0, t1, t2) 222 223#define outunpack_blocks(x0, x1, x2, x3, wkey, t0, t1, t2) \ 224 transpose_4x4(x0, x1, x2, x3, t0, t1, t2) \ 225 \ 226 vpxor x0, wkey, x0; \ 227 vpxor x1, wkey, x1; \ 228 vpxor x2, wkey, x2; \ 229 vpxor x3, wkey, x3; 230 231.align 8 232SYM_FUNC_START_LOCAL(__twofish_enc_blk8) 233 /* input: 234 * %rdi: ctx, CTX 235 * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: blocks 236 * output: 237 * RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2: encrypted blocks 238 */ 239 240 vmovdqu w(CTX), RK1; 241 242 pushq %r13; 243 pushq %rbx; 244 pushq %rcx; 245 246 inpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2); 247 preload_rgi(RA1); 248 rotate_1l(RD1); 249 inpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2); 250 rotate_1l(RD2); 251 252 encrypt_cycle(0); 253 encrypt_cycle(1); 254 encrypt_cycle(2); 255 encrypt_cycle(3); 256 encrypt_cycle(4); 257 encrypt_cycle(5); 258 encrypt_cycle(6); 259 encrypt_cycle_last(7); 260 261 vmovdqu (w+4*4)(CTX), RK1; 262 263 popq %rcx; 264 popq %rbx; 265 popq %r13; 266 267 outunpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2); 268 outunpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2); 269 270 RET; 271SYM_FUNC_END(__twofish_enc_blk8) 272 273.align 8 274SYM_FUNC_START_LOCAL(__twofish_dec_blk8) 275 /* input: 276 * %rdi: ctx, CTX 277 * RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2: encrypted blocks 278 * output: 279 * RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2: decrypted blocks 280 */ 281 282 vmovdqu (w+4*4)(CTX), RK1; 283 284 pushq %r13; 285 pushq %rbx; 286 287 inpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2); 288 preload_rgi(RC1); 289 rotate_1l(RA1); 290 inpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2); 291 rotate_1l(RA2); 292 293 decrypt_cycle(7); 294 decrypt_cycle(6); 295 decrypt_cycle(5); 296 decrypt_cycle(4); 297 decrypt_cycle(3); 298 decrypt_cycle(2); 299 decrypt_cycle(1); 300 decrypt_cycle_last(0); 301 302 vmovdqu (w)(CTX), RK1; 303 304 popq %rbx; 305 popq %r13; 306 307 outunpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2); 308 outunpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2); 309 310 RET; 311SYM_FUNC_END(__twofish_dec_blk8) 312 313SYM_FUNC_START(twofish_ecb_enc_8way) 314 /* input: 315 * %rdi: ctx, CTX 316 * %rsi: dst 317 * %rdx: src 318 */ 319 FRAME_BEGIN 320 321 movq %rsi, %r11; 322 323 load_8way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); 324 325 call __twofish_enc_blk8; 326 327 store_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); 328 329 FRAME_END 330 RET; 331SYM_FUNC_END(twofish_ecb_enc_8way) 332 333SYM_FUNC_START(twofish_ecb_dec_8way) 334 /* input: 335 * %rdi: ctx, CTX 336 * %rsi: dst 337 * %rdx: src 338 */ 339 FRAME_BEGIN 340 341 movq %rsi, %r11; 342 343 load_8way(%rdx, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); 344 345 call __twofish_dec_blk8; 346 347 store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); 348 349 FRAME_END 350 RET; 351SYM_FUNC_END(twofish_ecb_dec_8way) 352 353SYM_FUNC_START(twofish_cbc_dec_8way) 354 /* input: 355 * %rdi: ctx, CTX 356 * %rsi: dst 357 * %rdx: src 358 */ 359 FRAME_BEGIN 360 361 pushq %r12; 362 363 movq %rsi, %r11; 364 movq %rdx, %r12; 365 366 load_8way(%rdx, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2); 367 368 call __twofish_dec_blk8; 369 370 store_cbc_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2); 371 372 popq %r12; 373 374 FRAME_END 375 RET; 376SYM_FUNC_END(twofish_cbc_dec_8way)