arch/x86/crypto/camellia-x86_64-asm_64.S

   1 /*
   2  * Camellia Cipher Algorithm (x86_64)
   3  *
   4  * Copyright (C) 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  19  * USA
  20  *
  21  */
  22
  23 #include <linux/linkage.h>
  24
  25 .file "camellia-x86_64-asm_64.S"
  26 .text
  27
  28 .extern camellia_sp10011110;
  29 .extern camellia_sp22000222;
  30 .extern camellia_sp03303033;
  31 .extern camellia_sp00444404;
  32 .extern camellia_sp02220222;
  33 .extern camellia_sp30333033;
  34 .extern camellia_sp44044404;
  35 .extern camellia_sp11101110;
  36
  37 #define sp10011110 camellia_sp10011110
  38 #define sp22000222 camellia_sp22000222
  39 #define sp03303033 camellia_sp03303033
  40 #define sp00444404 camellia_sp00444404
  41 #define sp02220222 camellia_sp02220222
  42 #define sp30333033 camellia_sp30333033
  43 #define sp44044404 camellia_sp44044404
  44 #define sp11101110 camellia_sp11101110
  45
  46 #define CAMELLIA_TABLE_BYTE_LEN 272
  47
  48 /* struct camellia_ctx: */
  49 #define key_table 0
  50 #define key_length CAMELLIA_TABLE_BYTE_LEN
  51
  52 /* register macros */
  53 #define CTX %rdi
  54 #define RIO %rsi
  55 #define RIOd %esi
  56
  57 #define RAB0 %rax
  58 #define RCD0 %rcx
  59 #define RAB1 %rbx
  60 #define RCD1 %rdx
  61
  62 #define RAB0d %eax
  63 #define RCD0d %ecx
  64 #define RAB1d %ebx
  65 #define RCD1d %edx
  66
  67 #define RAB0bl %al
  68 #define RCD0bl %cl
  69 #define RAB1bl %bl
  70 #define RCD1bl %dl
  71
  72 #define RAB0bh %ah
  73 #define RCD0bh %ch
  74 #define RAB1bh %bh
  75 #define RCD1bh %dh
  76
  77 #define RT0 %rsi
  78 #define RT1 %rbp
  79 #define RT2 %r8
  80
  81 #define RT0d %esi
  82 #define RT1d %ebp
  83 #define RT2d %r8d
  84
  85 #define RT2bl %r8b
  86
  87 #define RXOR %r9
  88 #define RRBP %r10
  89 #define RDST %r11
  90
  91 #define RXORd %r9d
  92 #define RXORbl %r9b
  93
  94 #define xor2ror16(T0, T1, tmp1, tmp2, ab, dst) \
  95         movzbl ab ## bl,                tmp2 ## d; \
  96         movzbl ab ## bh,                tmp1 ## d; \
  97         rorq $16,                       ab; \
  98         xorq T0(, tmp2, 8),             dst; \
  99         xorq T1(, tmp1, 8),             dst;
 100
 101 /**********************************************************************
 102   1-way camellia
 103  **********************************************************************/
 104 #define roundsm(ab, subkey, cd) \
 105         movq (key_table + ((subkey) * 2) * 4)(CTX),     RT2; \
 106         \
 107         xor2ror16(sp00444404, sp03303033, RT0, RT1, ab ## 0, cd ## 0); \
 108         xor2ror16(sp22000222, sp10011110, RT0, RT1, ab ## 0, RT2); \
 109         xor2ror16(sp11101110, sp44044404, RT0, RT1, ab ## 0, cd ## 0); \
 110         xor2ror16(sp30333033, sp02220222, RT0, RT1, ab ## 0, RT2); \
 111         \
 112         xorq RT2,                                       cd ## 0;
 113
 114 #define fls(l, r, kl, kr) \
 115         movl (key_table + ((kl) * 2) * 4)(CTX),         RT0d; \
 116         andl l ## 0d,                                   RT0d; \
 117         roll $1,                                        RT0d; \
 118         shlq $32,                                       RT0; \
 119         xorq RT0,                                       l ## 0; \
 120         movq (key_table + ((kr) * 2) * 4)(CTX),         RT1; \
 121         orq r ## 0,                                     RT1; \
 122         shrq $32,                                       RT1; \
 123         xorq RT1,                                       r ## 0; \
 124         \
 125         movq (key_table + ((kl) * 2) * 4)(CTX),         RT2; \
 126         orq l ## 0,                                     RT2; \
 127         shrq $32,                                       RT2; \
 128         xorq RT2,                                       l ## 0; \
 129         movl (key_table + ((kr) * 2) * 4)(CTX),         RT0d; \
 130         andl r ## 0d,                                   RT0d; \
 131         roll $1,                                        RT0d; \
 132         shlq $32,                                       RT0; \
 133         xorq RT0,                                       r ## 0;
 134
 135 #define enc_rounds(i) \
 136         roundsm(RAB, i + 2, RCD); \
 137         roundsm(RCD, i + 3, RAB); \
 138         roundsm(RAB, i + 4, RCD); \
 139         roundsm(RCD, i + 5, RAB); \
 140         roundsm(RAB, i + 6, RCD); \
 141         roundsm(RCD, i + 7, RAB);
 142
 143 #define enc_fls(i) \
 144         fls(RAB, RCD, i + 0, i + 1);
 145
 146 #define enc_inpack() \
 147         movq (RIO),                     RAB0; \
 148         bswapq                          RAB0; \
 149         rolq $32,                       RAB0; \
 150         movq 4*2(RIO),                  RCD0; \
 151         bswapq                          RCD0; \
 152         rorq $32,                       RCD0; \
 153         xorq key_table(CTX),            RAB0;
 154
 155 #define enc_outunpack(op, max) \
 156         xorq key_table(CTX, max, 8),    RCD0; \
 157         rorq $32,                       RCD0; \
 158         bswapq                          RCD0; \
 159         op ## q RCD0,                   (RIO); \
 160         rolq $32,                       RAB0; \
 161         bswapq                          RAB0; \
 162         op ## q RAB0,                   4*2(RIO);
 163
 164 #define dec_rounds(i) \
 165         roundsm(RAB, i + 7, RCD); \
 166         roundsm(RCD, i + 6, RAB); \
 167         roundsm(RAB, i + 5, RCD); \
 168         roundsm(RCD, i + 4, RAB); \
 169         roundsm(RAB, i + 3, RCD); \
 170         roundsm(RCD, i + 2, RAB);
 171
 172 #define dec_fls(i) \
 173         fls(RAB, RCD, i + 1, i + 0);
 174
 175 #define dec_inpack(max) \
 176         movq (RIO),                     RAB0; \
 177         bswapq                          RAB0; \
 178         rolq $32,                       RAB0; \
 179         movq 4*2(RIO),                  RCD0; \
 180         bswapq                          RCD0; \
 181         rorq $32,                       RCD0; \
 182         xorq key_table(CTX, max, 8),    RAB0;
 183
 184 #define dec_outunpack() \
 185         xorq key_table(CTX),            RCD0; \
 186         rorq $32,                       RCD0; \
 187         bswapq                          RCD0; \
 188         movq RCD0,                      (RIO); \
 189         rolq $32,                       RAB0; \
 190         bswapq                          RAB0; \
 191         movq RAB0,                      4*2(RIO);
 192
 193 ENTRY(__camellia_enc_blk)
 194         /* input:
 195          *      %rdi: ctx, CTX
 196          *      %rsi: dst
 197          *      %rdx: src
 198          *      %rcx: bool xor
 199          */
 200         movq %rbp, RRBP;
 201
 202         movq %rcx, RXOR;
 203         movq %rsi, RDST;
 204         movq %rdx, RIO;
 205
 206         enc_inpack();
 207
 208         enc_rounds(0);
 209         enc_fls(8);
 210         enc_rounds(8);
 211         enc_fls(16);
 212         enc_rounds(16);
 213         movl $24, RT1d; /* max */
 214
 215         cmpb $16, key_length(CTX);
 216         je .L__enc_done;
 217
 218         enc_fls(24);
 219         enc_rounds(24);
 220         movl $32, RT1d; /* max */
 221
 222 .L__enc_done:
 223         testb RXORbl, RXORbl;
 224         movq RDST, RIO;
 225
 226         jnz .L__enc_xor;
 227
 228         enc_outunpack(mov, RT1);
 229
 230         movq RRBP, %rbp;
 231         ret;
 232
 233 .L__enc_xor:
 234         enc_outunpack(xor, RT1);
 235
 236         movq RRBP, %rbp;
 237         ret;
 238 ENDPROC(__camellia_enc_blk)
 239
 240 ENTRY(camellia_dec_blk)
 241         /* input:
 242          *      %rdi: ctx, CTX
 243          *      %rsi: dst
 244          *      %rdx: src
 245          */
 246         cmpl $16, key_length(CTX);
 247         movl $32, RT2d;
 248         movl $24, RXORd;
 249         cmovel RXORd, RT2d; /* max */
 250
 251         movq %rbp, RRBP;
 252         movq %rsi, RDST;
 253         movq %rdx, RIO;
 254
 255         dec_inpack(RT2);
 256
 257         cmpb $24, RT2bl;
 258         je .L__dec_rounds16;
 259
 260         dec_rounds(24);
 261         dec_fls(24);
 262
 263 .L__dec_rounds16:
 264         dec_rounds(16);
 265         dec_fls(16);
 266         dec_rounds(8);
 267         dec_fls(8);
 268         dec_rounds(0);
 269
 270         movq RDST, RIO;
 271
 272         dec_outunpack();
 273
 274         movq RRBP, %rbp;
 275         ret;
 276 ENDPROC(camellia_dec_blk)
 277
 278 /**********************************************************************
 279   2-way camellia
 280  **********************************************************************/
 281 #define roundsm2(ab, subkey, cd) \
 282         movq (key_table + ((subkey) * 2) * 4)(CTX),     RT2; \
 283         xorq RT2,                                       cd ## 1; \
 284         \
 285         xor2ror16(sp00444404, sp03303033, RT0, RT1, ab ## 0, cd ## 0); \
 286         xor2ror16(sp22000222, sp10011110, RT0, RT1, ab ## 0, RT2); \
 287         xor2ror16(sp11101110, sp44044404, RT0, RT1, ab ## 0, cd ## 0); \
 288         xor2ror16(sp30333033, sp02220222, RT0, RT1, ab ## 0, RT2); \
 289         \
 290                 xor2ror16(sp00444404, sp03303033, RT0, RT1, ab ## 1, cd ## 1); \
 291                 xorq RT2,                                       cd ## 0; \
 292                 xor2ror16(sp22000222, sp10011110, RT0, RT1, ab ## 1, cd ## 1); \
 293                 xor2ror16(sp11101110, sp44044404, RT0, RT1, ab ## 1, cd ## 1); \
 294                 xor2ror16(sp30333033, sp02220222, RT0, RT1, ab ## 1, cd ## 1);
 295
 296 #define fls2(l, r, kl, kr) \
 297         movl (key_table + ((kl) * 2) * 4)(CTX),         RT0d; \
 298         andl l ## 0d,                                   RT0d; \
 299         roll $1,                                        RT0d; \
 300         shlq $32,                                       RT0; \
 301         xorq RT0,                                       l ## 0; \
 302         movq (key_table + ((kr) * 2) * 4)(CTX),         RT1; \
 303         orq r ## 0,                                     RT1; \
 304         shrq $32,                                       RT1; \
 305         xorq RT1,                                       r ## 0; \
 306         \
 307                 movl (key_table + ((kl) * 2) * 4)(CTX),         RT2d; \
 308                 andl l ## 1d,                                   RT2d; \
 309                 roll $1,                                        RT2d; \
 310                 shlq $32,                                       RT2; \
 311                 xorq RT2,                                       l ## 1; \
 312                 movq (key_table + ((kr) * 2) * 4)(CTX),         RT0; \
 313                 orq r ## 1,                                     RT0; \
 314                 shrq $32,                                       RT0; \
 315                 xorq RT0,                                       r ## 1; \
 316         \
 317         movq (key_table + ((kl) * 2) * 4)(CTX),         RT1; \
 318         orq l ## 0,                                     RT1; \
 319         shrq $32,                                       RT1; \
 320         xorq RT1,                                       l ## 0; \
 321         movl (key_table + ((kr) * 2) * 4)(CTX),         RT2d; \
 322         andl r ## 0d,                                   RT2d; \
 323         roll $1,                                        RT2d; \
 324         shlq $32,                                       RT2; \
 325         xorq RT2,                                       r ## 0; \
 326         \
 327                 movq (key_table + ((kl) * 2) * 4)(CTX),         RT0; \
 328                 orq l ## 1,                                     RT0; \
 329                 shrq $32,                                       RT0; \
 330                 xorq RT0,                                       l ## 1; \
 331                 movl (key_table + ((kr) * 2) * 4)(CTX),         RT1d; \
 332                 andl r ## 1d,                                   RT1d; \
 333                 roll $1,                                        RT1d; \
 334                 shlq $32,                                       RT1; \
 335                 xorq RT1,                                       r ## 1;
 336
 337 #define enc_rounds2(i) \
 338         roundsm2(RAB, i + 2, RCD); \
 339         roundsm2(RCD, i + 3, RAB); \
 340         roundsm2(RAB, i + 4, RCD); \
 341         roundsm2(RCD, i + 5, RAB); \
 342         roundsm2(RAB, i + 6, RCD); \
 343         roundsm2(RCD, i + 7, RAB);
 344
 345 #define enc_fls2(i) \
 346         fls2(RAB, RCD, i + 0, i + 1);
 347
 348 #define enc_inpack2() \
 349         movq (RIO),                     RAB0; \
 350         bswapq                          RAB0; \
 351         rorq $32,                       RAB0; \
 352         movq 4*2(RIO),                  RCD0; \
 353         bswapq                          RCD0; \
 354         rolq $32,                       RCD0; \
 355         xorq key_table(CTX),            RAB0; \
 356         \
 357                 movq 8*2(RIO),                  RAB1; \
 358                 bswapq                          RAB1; \
 359                 rorq $32,                       RAB1; \
 360                 movq 12*2(RIO),                 RCD1; \
 361                 bswapq                          RCD1; \
 362                 rolq $32,                       RCD1; \
 363                 xorq key_table(CTX),            RAB1;
 364
 365 #define enc_outunpack2(op, max) \
 366         xorq key_table(CTX, max, 8),    RCD0; \
 367         rolq $32,                       RCD0; \
 368         bswapq                          RCD0; \
 369         op ## q RCD0,                   (RIO); \
 370         rorq $32,                       RAB0; \
 371         bswapq                          RAB0; \
 372         op ## q RAB0,                   4*2(RIO); \
 373         \
 374                 xorq key_table(CTX, max, 8),    RCD1; \
 375                 rolq $32,                       RCD1; \
 376                 bswapq                          RCD1; \
 377                 op ## q RCD1,                   8*2(RIO); \
 378                 rorq $32,                       RAB1; \
 379                 bswapq                          RAB1; \
 380                 op ## q RAB1,                   12*2(RIO);
 381
 382 #define dec_rounds2(i) \
 383         roundsm2(RAB, i + 7, RCD); \
 384         roundsm2(RCD, i + 6, RAB); \
 385         roundsm2(RAB, i + 5, RCD); \
 386         roundsm2(RCD, i + 4, RAB); \
 387         roundsm2(RAB, i + 3, RCD); \
 388         roundsm2(RCD, i + 2, RAB);
 389
 390 #define dec_fls2(i) \
 391         fls2(RAB, RCD, i + 1, i + 0);
 392
 393 #define dec_inpack2(max) \
 394         movq (RIO),                     RAB0; \
 395         bswapq                          RAB0; \
 396         rorq $32,                       RAB0; \
 397         movq 4*2(RIO),                  RCD0; \
 398         bswapq                          RCD0; \
 399         rolq $32,                       RCD0; \
 400         xorq key_table(CTX, max, 8),    RAB0; \
 401         \
 402                 movq 8*2(RIO),                  RAB1; \
 403                 bswapq                          RAB1; \
 404                 rorq $32,                       RAB1; \
 405                 movq 12*2(RIO),                 RCD1; \
 406                 bswapq                          RCD1; \
 407                 rolq $32,                       RCD1; \
 408                 xorq key_table(CTX, max, 8),    RAB1;
 409
 410 #define dec_outunpack2() \
 411         xorq key_table(CTX),            RCD0; \
 412         rolq $32,                       RCD0; \
 413         bswapq                          RCD0; \
 414         movq RCD0,                      (RIO); \
 415         rorq $32,                       RAB0; \
 416         bswapq                          RAB0; \
 417         movq RAB0,                      4*2(RIO); \
 418         \
 419                 xorq key_table(CTX),            RCD1; \
 420                 rolq $32,                       RCD1; \
 421                 bswapq                          RCD1; \
 422                 movq RCD1,                      8*2(RIO); \
 423                 rorq $32,                       RAB1; \
 424                 bswapq                          RAB1; \
 425                 movq RAB1,                      12*2(RIO);
 426
 427 ENTRY(__camellia_enc_blk_2way)
 428         /* input:
 429          *      %rdi: ctx, CTX
 430          *      %rsi: dst
 431          *      %rdx: src
 432          *      %rcx: bool xor
 433          */
 434         pushq %rbx;
 435
 436         movq %rbp, RRBP;
 437         movq %rcx, RXOR;
 438         movq %rsi, RDST;
 439         movq %rdx, RIO;
 440
 441         enc_inpack2();
 442
 443         enc_rounds2(0);
 444         enc_fls2(8);
 445         enc_rounds2(8);
 446         enc_fls2(16);
 447         enc_rounds2(16);
 448         movl $24, RT2d; /* max */
 449
 450         cmpb $16, key_length(CTX);
 451         je .L__enc2_done;
 452
 453         enc_fls2(24);
 454         enc_rounds2(24);
 455         movl $32, RT2d; /* max */
 456
 457 .L__enc2_done:
 458         test RXORbl, RXORbl;
 459         movq RDST, RIO;
 460         jnz .L__enc2_xor;
 461
 462         enc_outunpack2(mov, RT2);
 463
 464         movq RRBP, %rbp;
 465         popq %rbx;
 466         ret;
 467
 468 .L__enc2_xor:
 469         enc_outunpack2(xor, RT2);
 470
 471         movq RRBP, %rbp;
 472         popq %rbx;
 473         ret;
 474 ENDPROC(__camellia_enc_blk_2way)
 475
 476 ENTRY(camellia_dec_blk_2way)
 477         /* input:
 478          *      %rdi: ctx, CTX
 479          *      %rsi: dst
 480          *      %rdx: src
 481          */
 482         cmpl $16, key_length(CTX);
 483         movl $32, RT2d;
 484         movl $24, RXORd;
 485         cmovel RXORd, RT2d; /* max */
 486
 487         movq %rbx, RXOR;
 488         movq %rbp, RRBP;
 489         movq %rsi, RDST;
 490         movq %rdx, RIO;
 491
 492         dec_inpack2(RT2);
 493
 494         cmpb $24, RT2bl;
 495         je .L__dec2_rounds16;
 496
 497         dec_rounds2(24);
 498         dec_fls2(24);
 499
 500 .L__dec2_rounds16:
 501         dec_rounds2(16);
 502         dec_fls2(16);
 503         dec_rounds2(8);
 504         dec_fls2(8);
 505         dec_rounds2(0);
 506
 507         movq RDST, RIO;
 508
 509         dec_outunpack2();
 510
 511         movq RRBP, %rbp;
 512         movq RXOR, %rbx;
 513         ret;
 514 ENDPROC(camellia_dec_blk_2way)