| Paulo Flabiano Smorigo | 11c6e16 | 2016-07-18 12:26:25 -0300 | [diff] [blame] | 1 | #! /usr/bin/env perl |
| 2 | # Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | # |
| 4 | # Licensed under the OpenSSL license (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 | |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 9 | # |
| 10 | # ==================================================================== |
| 11 | # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL |
| 12 | # project. The module is, however, dual licensed under OpenSSL and |
| 13 | # CRYPTOGAMS licenses depending on where you obtain it. For further |
| 14 | # details see http://www.openssl.org/~appro/cryptogams/. |
| 15 | # ==================================================================== |
| 16 | # |
| 17 | # This module implements support for AES instructions as per PowerISA |
| 18 | # specification version 2.07, first implemented by POWER8 processor. |
| 19 | # The module is endian-agnostic in sense that it supports both big- |
| 20 | # and little-endian cases. Data alignment in parallelizable modes is |
| 21 | # handled with VSX loads and stores, which implies MSR.VSX flag being |
| 22 | # set. It should also be noted that ISA specification doesn't prohibit |
| 23 | # alignment exceptions for these instructions on page boundaries. |
| 24 | # Initially alignment was handled in pure AltiVec/VMX way [when data |
| 25 | # is aligned programmatically, which in turn guarantees exception- |
| 26 | # free execution], but it turned to hamper performance when vcipher |
| 27 | # instructions are interleaved. It's reckoned that eventual |
| 28 | # misalignment penalties at page boundaries are in average lower |
| 29 | # than additional overhead in pure AltiVec approach. |
| Paulo Flabiano Smorigo | 11c6e16 | 2016-07-18 12:26:25 -0300 | [diff] [blame] | 30 | # |
| 31 | # May 2016 |
| 32 | # |
| 33 | # Add XTS subroutine, 9x on little- and 12x improvement on big-endian |
| 34 | # systems were measured. |
| 35 | # |
| 36 | ###################################################################### |
| 37 | # Current large-block performance in cycles per byte processed with |
| 38 | # 128-bit key (less is better). |
| 39 | # |
| 40 | # CBC en-/decrypt CTR XTS |
| 41 | # POWER8[le] 3.96/0.72 0.74 1.1 |
| 42 | # POWER8[be] 3.75/0.65 0.66 1.0 |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 43 | |
| 44 | $flavour = shift; |
| 45 | |
| 46 | if ($flavour =~ /64/) { |
| 47 | $SIZE_T =8; |
| 48 | $LRSAVE =2*$SIZE_T; |
| 49 | $STU ="stdu"; |
| 50 | $POP ="ld"; |
| 51 | $PUSH ="std"; |
| 52 | $UCMP ="cmpld"; |
| 53 | $SHL ="sldi"; |
| 54 | } elsif ($flavour =~ /32/) { |
| 55 | $SIZE_T =4; |
| 56 | $LRSAVE =$SIZE_T; |
| 57 | $STU ="stwu"; |
| 58 | $POP ="lwz"; |
| 59 | $PUSH ="stw"; |
| 60 | $UCMP ="cmplw"; |
| 61 | $SHL ="slwi"; |
| 62 | } else { die "nonsense $flavour"; } |
| 63 | |
| 64 | $LITTLE_ENDIAN = ($flavour=~/le$/) ? $SIZE_T : 0; |
| 65 | |
| 66 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| 67 | ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or |
| 68 | ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or |
| 69 | die "can't locate ppc-xlate.pl"; |
| 70 | |
| 71 | open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!"; |
| 72 | |
| 73 | $FRAME=8*$SIZE_T; |
| 74 | $prefix="aes_p8"; |
| 75 | |
| 76 | $sp="r1"; |
| 77 | $vrsave="r12"; |
| 78 | |
| 79 | ######################################################################### |
| 80 | {{{ # Key setup procedures # |
| 81 | my ($inp,$bits,$out,$ptr,$cnt,$rounds)=map("r$_",(3..8)); |
| 82 | my ($zero,$in0,$in1,$key,$rcon,$mask,$tmp)=map("v$_",(0..6)); |
| 83 | my ($stage,$outperm,$outmask,$outhead,$outtail)=map("v$_",(7..11)); |
| 84 | |
| 85 | $code.=<<___; |
| 86 | .machine "any" |
| 87 | |
| 88 | .text |
| 89 | |
| 90 | .align 7 |
| 91 | rcon: |
| 92 | .long 0x01000000, 0x01000000, 0x01000000, 0x01000000 ?rev |
| 93 | .long 0x1b000000, 0x1b000000, 0x1b000000, 0x1b000000 ?rev |
| 94 | .long 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c ?rev |
| 95 | .long 0,0,0,0 ?asis |
| 96 | Lconsts: |
| 97 | mflr r0 |
| 98 | bcl 20,31,\$+4 |
| 99 | mflr $ptr #vvvvv "distance between . and rcon |
| 100 | addi $ptr,$ptr,-0x48 |
| 101 | mtlr r0 |
| 102 | blr |
| 103 | .long 0 |
| 104 | .byte 0,12,0x14,0,0,0,0,0 |
| 105 | .asciz "AES for PowerISA 2.07, CRYPTOGAMS by <appro\@openssl.org>" |
| 106 | |
| 107 | .globl .${prefix}_set_encrypt_key |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 108 | Lset_encrypt_key: |
| 109 | mflr r11 |
| 110 | $PUSH r11,$LRSAVE($sp) |
| 111 | |
| 112 | li $ptr,-1 |
| 113 | ${UCMP}i $inp,0 |
| 114 | beq- Lenc_key_abort # if ($inp==0) return -1; |
| 115 | ${UCMP}i $out,0 |
| 116 | beq- Lenc_key_abort # if ($out==0) return -1; |
| 117 | li $ptr,-2 |
| 118 | cmpwi $bits,128 |
| 119 | blt- Lenc_key_abort |
| 120 | cmpwi $bits,256 |
| 121 | bgt- Lenc_key_abort |
| 122 | andi. r0,$bits,0x3f |
| 123 | bne- Lenc_key_abort |
| 124 | |
| 125 | lis r0,0xfff0 |
| 126 | mfspr $vrsave,256 |
| 127 | mtspr 256,r0 |
| 128 | |
| 129 | bl Lconsts |
| 130 | mtlr r11 |
| 131 | |
| 132 | neg r9,$inp |
| 133 | lvx $in0,0,$inp |
| 134 | addi $inp,$inp,15 # 15 is not typo |
| 135 | lvsr $key,0,r9 # borrow $key |
| 136 | li r8,0x20 |
| 137 | cmpwi $bits,192 |
| 138 | lvx $in1,0,$inp |
| 139 | le?vspltisb $mask,0x0f # borrow $mask |
| 140 | lvx $rcon,0,$ptr |
| 141 | le?vxor $key,$key,$mask # adjust for byte swap |
| 142 | lvx $mask,r8,$ptr |
| 143 | addi $ptr,$ptr,0x10 |
| 144 | vperm $in0,$in0,$in1,$key # align [and byte swap in LE] |
| 145 | li $cnt,8 |
| 146 | vxor $zero,$zero,$zero |
| 147 | mtctr $cnt |
| 148 | |
| 149 | ?lvsr $outperm,0,$out |
| 150 | vspltisb $outmask,-1 |
| 151 | lvx $outhead,0,$out |
| 152 | ?vperm $outmask,$zero,$outmask,$outperm |
| 153 | |
| 154 | blt Loop128 |
| 155 | addi $inp,$inp,8 |
| 156 | beq L192 |
| 157 | addi $inp,$inp,8 |
| 158 | b L256 |
| 159 | |
| 160 | .align 4 |
| 161 | Loop128: |
| 162 | vperm $key,$in0,$in0,$mask # rotate-n-splat |
| 163 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 164 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 165 | vsel $stage,$outhead,$outtail,$outmask |
| 166 | vmr $outhead,$outtail |
| 167 | vcipherlast $key,$key,$rcon |
| 168 | stvx $stage,0,$out |
| 169 | addi $out,$out,16 |
| 170 | |
| 171 | vxor $in0,$in0,$tmp |
| 172 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 173 | vxor $in0,$in0,$tmp |
| 174 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 175 | vxor $in0,$in0,$tmp |
| 176 | vadduwm $rcon,$rcon,$rcon |
| 177 | vxor $in0,$in0,$key |
| 178 | bdnz Loop128 |
| 179 | |
| 180 | lvx $rcon,0,$ptr # last two round keys |
| 181 | |
| 182 | vperm $key,$in0,$in0,$mask # rotate-n-splat |
| 183 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 184 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 185 | vsel $stage,$outhead,$outtail,$outmask |
| 186 | vmr $outhead,$outtail |
| 187 | vcipherlast $key,$key,$rcon |
| 188 | stvx $stage,0,$out |
| 189 | addi $out,$out,16 |
| 190 | |
| 191 | vxor $in0,$in0,$tmp |
| 192 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 193 | vxor $in0,$in0,$tmp |
| 194 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 195 | vxor $in0,$in0,$tmp |
| 196 | vadduwm $rcon,$rcon,$rcon |
| 197 | vxor $in0,$in0,$key |
| 198 | |
| 199 | vperm $key,$in0,$in0,$mask # rotate-n-splat |
| 200 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 201 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 202 | vsel $stage,$outhead,$outtail,$outmask |
| 203 | vmr $outhead,$outtail |
| 204 | vcipherlast $key,$key,$rcon |
| 205 | stvx $stage,0,$out |
| 206 | addi $out,$out,16 |
| 207 | |
| 208 | vxor $in0,$in0,$tmp |
| 209 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 210 | vxor $in0,$in0,$tmp |
| 211 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 212 | vxor $in0,$in0,$tmp |
| 213 | vxor $in0,$in0,$key |
| 214 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 215 | vsel $stage,$outhead,$outtail,$outmask |
| 216 | vmr $outhead,$outtail |
| 217 | stvx $stage,0,$out |
| 218 | |
| 219 | addi $inp,$out,15 # 15 is not typo |
| 220 | addi $out,$out,0x50 |
| 221 | |
| 222 | li $rounds,10 |
| 223 | b Ldone |
| 224 | |
| 225 | .align 4 |
| 226 | L192: |
| 227 | lvx $tmp,0,$inp |
| 228 | li $cnt,4 |
| 229 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 230 | vsel $stage,$outhead,$outtail,$outmask |
| 231 | vmr $outhead,$outtail |
| 232 | stvx $stage,0,$out |
| 233 | addi $out,$out,16 |
| 234 | vperm $in1,$in1,$tmp,$key # align [and byte swap in LE] |
| 235 | vspltisb $key,8 # borrow $key |
| 236 | mtctr $cnt |
| 237 | vsububm $mask,$mask,$key # adjust the mask |
| 238 | |
| 239 | Loop192: |
| 240 | vperm $key,$in1,$in1,$mask # roate-n-splat |
| 241 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 242 | vcipherlast $key,$key,$rcon |
| 243 | |
| 244 | vxor $in0,$in0,$tmp |
| 245 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 246 | vxor $in0,$in0,$tmp |
| 247 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 248 | vxor $in0,$in0,$tmp |
| 249 | |
| 250 | vsldoi $stage,$zero,$in1,8 |
| 251 | vspltw $tmp,$in0,3 |
| 252 | vxor $tmp,$tmp,$in1 |
| 253 | vsldoi $in1,$zero,$in1,12 # >>32 |
| 254 | vadduwm $rcon,$rcon,$rcon |
| 255 | vxor $in1,$in1,$tmp |
| 256 | vxor $in0,$in0,$key |
| 257 | vxor $in1,$in1,$key |
| 258 | vsldoi $stage,$stage,$in0,8 |
| 259 | |
| 260 | vperm $key,$in1,$in1,$mask # rotate-n-splat |
| 261 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 262 | vperm $outtail,$stage,$stage,$outperm # rotate |
| 263 | vsel $stage,$outhead,$outtail,$outmask |
| 264 | vmr $outhead,$outtail |
| 265 | vcipherlast $key,$key,$rcon |
| 266 | stvx $stage,0,$out |
| 267 | addi $out,$out,16 |
| 268 | |
| 269 | vsldoi $stage,$in0,$in1,8 |
| 270 | vxor $in0,$in0,$tmp |
| 271 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 272 | vperm $outtail,$stage,$stage,$outperm # rotate |
| 273 | vsel $stage,$outhead,$outtail,$outmask |
| 274 | vmr $outhead,$outtail |
| 275 | vxor $in0,$in0,$tmp |
| 276 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 277 | vxor $in0,$in0,$tmp |
| 278 | stvx $stage,0,$out |
| 279 | addi $out,$out,16 |
| 280 | |
| 281 | vspltw $tmp,$in0,3 |
| 282 | vxor $tmp,$tmp,$in1 |
| 283 | vsldoi $in1,$zero,$in1,12 # >>32 |
| 284 | vadduwm $rcon,$rcon,$rcon |
| 285 | vxor $in1,$in1,$tmp |
| 286 | vxor $in0,$in0,$key |
| 287 | vxor $in1,$in1,$key |
| 288 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 289 | vsel $stage,$outhead,$outtail,$outmask |
| 290 | vmr $outhead,$outtail |
| 291 | stvx $stage,0,$out |
| 292 | addi $inp,$out,15 # 15 is not typo |
| 293 | addi $out,$out,16 |
| 294 | bdnz Loop192 |
| 295 | |
| 296 | li $rounds,12 |
| 297 | addi $out,$out,0x20 |
| 298 | b Ldone |
| 299 | |
| 300 | .align 4 |
| 301 | L256: |
| 302 | lvx $tmp,0,$inp |
| 303 | li $cnt,7 |
| 304 | li $rounds,14 |
| 305 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 306 | vsel $stage,$outhead,$outtail,$outmask |
| 307 | vmr $outhead,$outtail |
| 308 | stvx $stage,0,$out |
| 309 | addi $out,$out,16 |
| 310 | vperm $in1,$in1,$tmp,$key # align [and byte swap in LE] |
| 311 | mtctr $cnt |
| 312 | |
| 313 | Loop256: |
| 314 | vperm $key,$in1,$in1,$mask # rotate-n-splat |
| 315 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 316 | vperm $outtail,$in1,$in1,$outperm # rotate |
| 317 | vsel $stage,$outhead,$outtail,$outmask |
| 318 | vmr $outhead,$outtail |
| 319 | vcipherlast $key,$key,$rcon |
| 320 | stvx $stage,0,$out |
| 321 | addi $out,$out,16 |
| 322 | |
| 323 | vxor $in0,$in0,$tmp |
| 324 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 325 | vxor $in0,$in0,$tmp |
| 326 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 327 | vxor $in0,$in0,$tmp |
| 328 | vadduwm $rcon,$rcon,$rcon |
| 329 | vxor $in0,$in0,$key |
| 330 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 331 | vsel $stage,$outhead,$outtail,$outmask |
| 332 | vmr $outhead,$outtail |
| 333 | stvx $stage,0,$out |
| 334 | addi $inp,$out,15 # 15 is not typo |
| 335 | addi $out,$out,16 |
| 336 | bdz Ldone |
| 337 | |
| 338 | vspltw $key,$in0,3 # just splat |
| 339 | vsldoi $tmp,$zero,$in1,12 # >>32 |
| 340 | vsbox $key,$key |
| 341 | |
| 342 | vxor $in1,$in1,$tmp |
| 343 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 344 | vxor $in1,$in1,$tmp |
| 345 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 346 | vxor $in1,$in1,$tmp |
| 347 | |
| 348 | vxor $in1,$in1,$key |
| 349 | b Loop256 |
| 350 | |
| 351 | .align 4 |
| 352 | Ldone: |
| 353 | lvx $in1,0,$inp # redundant in aligned case |
| 354 | vsel $in1,$outhead,$in1,$outmask |
| 355 | stvx $in1,0,$inp |
| 356 | li $ptr,0 |
| 357 | mtspr 256,$vrsave |
| 358 | stw $rounds,0($out) |
| 359 | |
| 360 | Lenc_key_abort: |
| 361 | mr r3,$ptr |
| 362 | blr |
| 363 | .long 0 |
| 364 | .byte 0,12,0x14,1,0,0,3,0 |
| 365 | .long 0 |
| 366 | .size .${prefix}_set_encrypt_key,.-.${prefix}_set_encrypt_key |
| 367 | |
| 368 | .globl .${prefix}_set_decrypt_key |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 369 | $STU $sp,-$FRAME($sp) |
| 370 | mflr r10 |
| 371 | $PUSH r10,$FRAME+$LRSAVE($sp) |
| 372 | bl Lset_encrypt_key |
| 373 | mtlr r10 |
| 374 | |
| 375 | cmpwi r3,0 |
| 376 | bne- Ldec_key_abort |
| 377 | |
| 378 | slwi $cnt,$rounds,4 |
| 379 | subi $inp,$out,240 # first round key |
| 380 | srwi $rounds,$rounds,1 |
| 381 | add $out,$inp,$cnt # last round key |
| 382 | mtctr $rounds |
| 383 | |
| 384 | Ldeckey: |
| 385 | lwz r0, 0($inp) |
| 386 | lwz r6, 4($inp) |
| 387 | lwz r7, 8($inp) |
| 388 | lwz r8, 12($inp) |
| 389 | addi $inp,$inp,16 |
| 390 | lwz r9, 0($out) |
| 391 | lwz r10,4($out) |
| 392 | lwz r11,8($out) |
| 393 | lwz r12,12($out) |
| 394 | stw r0, 0($out) |
| 395 | stw r6, 4($out) |
| 396 | stw r7, 8($out) |
| 397 | stw r8, 12($out) |
| 398 | subi $out,$out,16 |
| 399 | stw r9, -16($inp) |
| 400 | stw r10,-12($inp) |
| 401 | stw r11,-8($inp) |
| 402 | stw r12,-4($inp) |
| 403 | bdnz Ldeckey |
| 404 | |
| 405 | xor r3,r3,r3 # return value |
| 406 | Ldec_key_abort: |
| 407 | addi $sp,$sp,$FRAME |
| 408 | blr |
| 409 | .long 0 |
| 410 | .byte 0,12,4,1,0x80,0,3,0 |
| 411 | .long 0 |
| 412 | .size .${prefix}_set_decrypt_key,.-.${prefix}_set_decrypt_key |
| 413 | ___ |
| 414 | }}} |
| 415 | ######################################################################### |
| 416 | {{{ # Single block en- and decrypt procedures # |
| 417 | sub gen_block () { |
| 418 | my $dir = shift; |
| 419 | my $n = $dir eq "de" ? "n" : ""; |
| 420 | my ($inp,$out,$key,$rounds,$idx)=map("r$_",(3..7)); |
| 421 | |
| 422 | $code.=<<___; |
| 423 | .globl .${prefix}_${dir}crypt |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 424 | lwz $rounds,240($key) |
| 425 | lis r0,0xfc00 |
| 426 | mfspr $vrsave,256 |
| 427 | li $idx,15 # 15 is not typo |
| 428 | mtspr 256,r0 |
| 429 | |
| 430 | lvx v0,0,$inp |
| 431 | neg r11,$out |
| 432 | lvx v1,$idx,$inp |
| 433 | lvsl v2,0,$inp # inpperm |
| 434 | le?vspltisb v4,0x0f |
| 435 | ?lvsl v3,0,r11 # outperm |
| 436 | le?vxor v2,v2,v4 |
| 437 | li $idx,16 |
| 438 | vperm v0,v0,v1,v2 # align [and byte swap in LE] |
| 439 | lvx v1,0,$key |
| 440 | ?lvsl v5,0,$key # keyperm |
| 441 | srwi $rounds,$rounds,1 |
| 442 | lvx v2,$idx,$key |
| 443 | addi $idx,$idx,16 |
| 444 | subi $rounds,$rounds,1 |
| 445 | ?vperm v1,v1,v2,v5 # align round key |
| 446 | |
| 447 | vxor v0,v0,v1 |
| 448 | lvx v1,$idx,$key |
| 449 | addi $idx,$idx,16 |
| 450 | mtctr $rounds |
| 451 | |
| 452 | Loop_${dir}c: |
| 453 | ?vperm v2,v2,v1,v5 |
| 454 | v${n}cipher v0,v0,v2 |
| 455 | lvx v2,$idx,$key |
| 456 | addi $idx,$idx,16 |
| 457 | ?vperm v1,v1,v2,v5 |
| 458 | v${n}cipher v0,v0,v1 |
| 459 | lvx v1,$idx,$key |
| 460 | addi $idx,$idx,16 |
| 461 | bdnz Loop_${dir}c |
| 462 | |
| 463 | ?vperm v2,v2,v1,v5 |
| 464 | v${n}cipher v0,v0,v2 |
| 465 | lvx v2,$idx,$key |
| 466 | ?vperm v1,v1,v2,v5 |
| 467 | v${n}cipherlast v0,v0,v1 |
| 468 | |
| 469 | vspltisb v2,-1 |
| 470 | vxor v1,v1,v1 |
| 471 | li $idx,15 # 15 is not typo |
| 472 | ?vperm v2,v1,v2,v3 # outmask |
| 473 | le?vxor v3,v3,v4 |
| 474 | lvx v1,0,$out # outhead |
| 475 | vperm v0,v0,v0,v3 # rotate [and byte swap in LE] |
| 476 | vsel v1,v1,v0,v2 |
| 477 | lvx v4,$idx,$out |
| 478 | stvx v1,0,$out |
| 479 | vsel v0,v0,v4,v2 |
| 480 | stvx v0,$idx,$out |
| 481 | |
| 482 | mtspr 256,$vrsave |
| 483 | blr |
| 484 | .long 0 |
| 485 | .byte 0,12,0x14,0,0,0,3,0 |
| 486 | .long 0 |
| 487 | .size .${prefix}_${dir}crypt,.-.${prefix}_${dir}crypt |
| 488 | ___ |
| 489 | } |
| 490 | &gen_block("en"); |
| 491 | &gen_block("de"); |
| 492 | }}} |
| 493 | ######################################################################### |
| 494 | {{{ # CBC en- and decrypt procedures # |
| 495 | my ($inp,$out,$len,$key,$ivp,$enc,$rounds,$idx)=map("r$_",(3..10)); |
| 496 | my ($rndkey0,$rndkey1,$inout,$tmp)= map("v$_",(0..3)); |
| 497 | my ($ivec,$inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm)= |
| 498 | map("v$_",(4..10)); |
| 499 | $code.=<<___; |
| 500 | .globl .${prefix}_cbc_encrypt |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 501 | ${UCMP}i $len,16 |
| 502 | bltlr- |
| 503 | |
| 504 | cmpwi $enc,0 # test direction |
| 505 | lis r0,0xffe0 |
| 506 | mfspr $vrsave,256 |
| 507 | mtspr 256,r0 |
| 508 | |
| 509 | li $idx,15 |
| 510 | vxor $rndkey0,$rndkey0,$rndkey0 |
| 511 | le?vspltisb $tmp,0x0f |
| 512 | |
| 513 | lvx $ivec,0,$ivp # load [unaligned] iv |
| 514 | lvsl $inpperm,0,$ivp |
| 515 | lvx $inptail,$idx,$ivp |
| 516 | le?vxor $inpperm,$inpperm,$tmp |
| 517 | vperm $ivec,$ivec,$inptail,$inpperm |
| 518 | |
| 519 | neg r11,$inp |
| 520 | ?lvsl $keyperm,0,$key # prepare for unaligned key |
| 521 | lwz $rounds,240($key) |
| 522 | |
| 523 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 524 | lvx $inptail,0,$inp |
| 525 | addi $inp,$inp,15 # 15 is not typo |
| 526 | le?vxor $inpperm,$inpperm,$tmp |
| 527 | |
| 528 | ?lvsr $outperm,0,$out # prepare for unaligned store |
| 529 | vspltisb $outmask,-1 |
| 530 | lvx $outhead,0,$out |
| 531 | ?vperm $outmask,$rndkey0,$outmask,$outperm |
| 532 | le?vxor $outperm,$outperm,$tmp |
| 533 | |
| 534 | srwi $rounds,$rounds,1 |
| 535 | li $idx,16 |
| 536 | subi $rounds,$rounds,1 |
| 537 | beq Lcbc_dec |
| 538 | |
| 539 | Lcbc_enc: |
| 540 | vmr $inout,$inptail |
| 541 | lvx $inptail,0,$inp |
| 542 | addi $inp,$inp,16 |
| 543 | mtctr $rounds |
| 544 | subi $len,$len,16 # len-=16 |
| 545 | |
| 546 | lvx $rndkey0,0,$key |
| 547 | vperm $inout,$inout,$inptail,$inpperm |
| 548 | lvx $rndkey1,$idx,$key |
| 549 | addi $idx,$idx,16 |
| 550 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 551 | vxor $inout,$inout,$rndkey0 |
| 552 | lvx $rndkey0,$idx,$key |
| 553 | addi $idx,$idx,16 |
| 554 | vxor $inout,$inout,$ivec |
| 555 | |
| 556 | Loop_cbc_enc: |
| 557 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 558 | vcipher $inout,$inout,$rndkey1 |
| 559 | lvx $rndkey1,$idx,$key |
| 560 | addi $idx,$idx,16 |
| 561 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 562 | vcipher $inout,$inout,$rndkey0 |
| 563 | lvx $rndkey0,$idx,$key |
| 564 | addi $idx,$idx,16 |
| 565 | bdnz Loop_cbc_enc |
| 566 | |
| 567 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 568 | vcipher $inout,$inout,$rndkey1 |
| 569 | lvx $rndkey1,$idx,$key |
| 570 | li $idx,16 |
| 571 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 572 | vcipherlast $ivec,$inout,$rndkey0 |
| 573 | ${UCMP}i $len,16 |
| 574 | |
| 575 | vperm $tmp,$ivec,$ivec,$outperm |
| 576 | vsel $inout,$outhead,$tmp,$outmask |
| 577 | vmr $outhead,$tmp |
| 578 | stvx $inout,0,$out |
| 579 | addi $out,$out,16 |
| 580 | bge Lcbc_enc |
| 581 | |
| 582 | b Lcbc_done |
| 583 | |
| 584 | .align 4 |
| 585 | Lcbc_dec: |
| 586 | ${UCMP}i $len,128 |
| 587 | bge _aesp8_cbc_decrypt8x |
| 588 | vmr $tmp,$inptail |
| 589 | lvx $inptail,0,$inp |
| 590 | addi $inp,$inp,16 |
| 591 | mtctr $rounds |
| 592 | subi $len,$len,16 # len-=16 |
| 593 | |
| 594 | lvx $rndkey0,0,$key |
| 595 | vperm $tmp,$tmp,$inptail,$inpperm |
| 596 | lvx $rndkey1,$idx,$key |
| 597 | addi $idx,$idx,16 |
| 598 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 599 | vxor $inout,$tmp,$rndkey0 |
| 600 | lvx $rndkey0,$idx,$key |
| 601 | addi $idx,$idx,16 |
| 602 | |
| 603 | Loop_cbc_dec: |
| 604 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 605 | vncipher $inout,$inout,$rndkey1 |
| 606 | lvx $rndkey1,$idx,$key |
| 607 | addi $idx,$idx,16 |
| 608 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 609 | vncipher $inout,$inout,$rndkey0 |
| 610 | lvx $rndkey0,$idx,$key |
| 611 | addi $idx,$idx,16 |
| 612 | bdnz Loop_cbc_dec |
| 613 | |
| 614 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 615 | vncipher $inout,$inout,$rndkey1 |
| 616 | lvx $rndkey1,$idx,$key |
| 617 | li $idx,16 |
| 618 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 619 | vncipherlast $inout,$inout,$rndkey0 |
| 620 | ${UCMP}i $len,16 |
| 621 | |
| 622 | vxor $inout,$inout,$ivec |
| 623 | vmr $ivec,$tmp |
| 624 | vperm $tmp,$inout,$inout,$outperm |
| 625 | vsel $inout,$outhead,$tmp,$outmask |
| 626 | vmr $outhead,$tmp |
| 627 | stvx $inout,0,$out |
| 628 | addi $out,$out,16 |
| 629 | bge Lcbc_dec |
| 630 | |
| 631 | Lcbc_done: |
| 632 | addi $out,$out,-1 |
| 633 | lvx $inout,0,$out # redundant in aligned case |
| 634 | vsel $inout,$outhead,$inout,$outmask |
| 635 | stvx $inout,0,$out |
| 636 | |
| 637 | neg $enc,$ivp # write [unaligned] iv |
| 638 | li $idx,15 # 15 is not typo |
| 639 | vxor $rndkey0,$rndkey0,$rndkey0 |
| 640 | vspltisb $outmask,-1 |
| 641 | le?vspltisb $tmp,0x0f |
| 642 | ?lvsl $outperm,0,$enc |
| 643 | ?vperm $outmask,$rndkey0,$outmask,$outperm |
| 644 | le?vxor $outperm,$outperm,$tmp |
| 645 | lvx $outhead,0,$ivp |
| 646 | vperm $ivec,$ivec,$ivec,$outperm |
| 647 | vsel $inout,$outhead,$ivec,$outmask |
| 648 | lvx $inptail,$idx,$ivp |
| 649 | stvx $inout,0,$ivp |
| 650 | vsel $inout,$ivec,$inptail,$outmask |
| 651 | stvx $inout,$idx,$ivp |
| 652 | |
| 653 | mtspr 256,$vrsave |
| 654 | blr |
| 655 | .long 0 |
| 656 | .byte 0,12,0x14,0,0,0,6,0 |
| 657 | .long 0 |
| 658 | ___ |
| 659 | ######################################################################### |
| 660 | {{ # Optimized CBC decrypt procedure # |
| 661 | my $key_="r11"; |
| 662 | my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,8,26..31)); |
| 663 | my ($in0, $in1, $in2, $in3, $in4, $in5, $in6, $in7 )=map("v$_",(0..3,10..13)); |
| 664 | my ($out0,$out1,$out2,$out3,$out4,$out5,$out6,$out7)=map("v$_",(14..21)); |
| 665 | my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys |
| 666 | # v26-v31 last 6 round keys |
| 667 | my ($tmp,$keyperm)=($in3,$in4); # aliases with "caller", redundant assignment |
| 668 | |
| 669 | $code.=<<___; |
| 670 | .align 5 |
| 671 | _aesp8_cbc_decrypt8x: |
| 672 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 673 | li r10,`$FRAME+8*16+15` |
| 674 | li r11,`$FRAME+8*16+31` |
| 675 | stvx v20,r10,$sp # ABI says so |
| 676 | addi r10,r10,32 |
| 677 | stvx v21,r11,$sp |
| 678 | addi r11,r11,32 |
| 679 | stvx v22,r10,$sp |
| 680 | addi r10,r10,32 |
| 681 | stvx v23,r11,$sp |
| 682 | addi r11,r11,32 |
| 683 | stvx v24,r10,$sp |
| 684 | addi r10,r10,32 |
| 685 | stvx v25,r11,$sp |
| 686 | addi r11,r11,32 |
| 687 | stvx v26,r10,$sp |
| 688 | addi r10,r10,32 |
| 689 | stvx v27,r11,$sp |
| 690 | addi r11,r11,32 |
| 691 | stvx v28,r10,$sp |
| 692 | addi r10,r10,32 |
| 693 | stvx v29,r11,$sp |
| 694 | addi r11,r11,32 |
| 695 | stvx v30,r10,$sp |
| 696 | stvx v31,r11,$sp |
| 697 | li r0,-1 |
| 698 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 699 | li $x10,0x10 |
| 700 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 701 | li $x20,0x20 |
| 702 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 703 | li $x30,0x30 |
| 704 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 705 | li $x40,0x40 |
| 706 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 707 | li $x50,0x50 |
| 708 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 709 | li $x60,0x60 |
| 710 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 711 | li $x70,0x70 |
| 712 | mtspr 256,r0 |
| 713 | |
| 714 | subi $rounds,$rounds,3 # -4 in total |
| 715 | subi $len,$len,128 # bias |
| 716 | |
| 717 | lvx $rndkey0,$x00,$key # load key schedule |
| 718 | lvx v30,$x10,$key |
| 719 | addi $key,$key,0x20 |
| 720 | lvx v31,$x00,$key |
| 721 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
| 722 | addi $key_,$sp,$FRAME+15 |
| 723 | mtctr $rounds |
| 724 | |
| 725 | Load_cbc_dec_key: |
| 726 | ?vperm v24,v30,v31,$keyperm |
| 727 | lvx v30,$x10,$key |
| 728 | addi $key,$key,0x20 |
| 729 | stvx v24,$x00,$key_ # off-load round[1] |
| 730 | ?vperm v25,v31,v30,$keyperm |
| 731 | lvx v31,$x00,$key |
| 732 | stvx v25,$x10,$key_ # off-load round[2] |
| 733 | addi $key_,$key_,0x20 |
| 734 | bdnz Load_cbc_dec_key |
| 735 | |
| 736 | lvx v26,$x10,$key |
| 737 | ?vperm v24,v30,v31,$keyperm |
| 738 | lvx v27,$x20,$key |
| 739 | stvx v24,$x00,$key_ # off-load round[3] |
| 740 | ?vperm v25,v31,v26,$keyperm |
| 741 | lvx v28,$x30,$key |
| 742 | stvx v25,$x10,$key_ # off-load round[4] |
| 743 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 744 | ?vperm v26,v26,v27,$keyperm |
| 745 | lvx v29,$x40,$key |
| 746 | ?vperm v27,v27,v28,$keyperm |
| 747 | lvx v30,$x50,$key |
| 748 | ?vperm v28,v28,v29,$keyperm |
| 749 | lvx v31,$x60,$key |
| 750 | ?vperm v29,v29,v30,$keyperm |
| 751 | lvx $out0,$x70,$key # borrow $out0 |
| 752 | ?vperm v30,v30,v31,$keyperm |
| 753 | lvx v24,$x00,$key_ # pre-load round[1] |
| 754 | ?vperm v31,v31,$out0,$keyperm |
| 755 | lvx v25,$x10,$key_ # pre-load round[2] |
| 756 | |
| 757 | #lvx $inptail,0,$inp # "caller" already did this |
| 758 | #addi $inp,$inp,15 # 15 is not typo |
| 759 | subi $inp,$inp,15 # undo "caller" |
| 760 | |
| 761 | le?li $idx,8 |
| 762 | lvx_u $in0,$x00,$inp # load first 8 "words" |
| 763 | le?lvsl $inpperm,0,$idx |
| 764 | le?vspltisb $tmp,0x0f |
| 765 | lvx_u $in1,$x10,$inp |
| 766 | le?vxor $inpperm,$inpperm,$tmp # transform for lvx_u/stvx_u |
| 767 | lvx_u $in2,$x20,$inp |
| 768 | le?vperm $in0,$in0,$in0,$inpperm |
| 769 | lvx_u $in3,$x30,$inp |
| 770 | le?vperm $in1,$in1,$in1,$inpperm |
| 771 | lvx_u $in4,$x40,$inp |
| 772 | le?vperm $in2,$in2,$in2,$inpperm |
| 773 | vxor $out0,$in0,$rndkey0 |
| 774 | lvx_u $in5,$x50,$inp |
| 775 | le?vperm $in3,$in3,$in3,$inpperm |
| 776 | vxor $out1,$in1,$rndkey0 |
| 777 | lvx_u $in6,$x60,$inp |
| 778 | le?vperm $in4,$in4,$in4,$inpperm |
| 779 | vxor $out2,$in2,$rndkey0 |
| 780 | lvx_u $in7,$x70,$inp |
| 781 | addi $inp,$inp,0x80 |
| 782 | le?vperm $in5,$in5,$in5,$inpperm |
| 783 | vxor $out3,$in3,$rndkey0 |
| 784 | le?vperm $in6,$in6,$in6,$inpperm |
| 785 | vxor $out4,$in4,$rndkey0 |
| 786 | le?vperm $in7,$in7,$in7,$inpperm |
| 787 | vxor $out5,$in5,$rndkey0 |
| 788 | vxor $out6,$in6,$rndkey0 |
| 789 | vxor $out7,$in7,$rndkey0 |
| 790 | |
| 791 | mtctr $rounds |
| 792 | b Loop_cbc_dec8x |
| 793 | .align 5 |
| 794 | Loop_cbc_dec8x: |
| 795 | vncipher $out0,$out0,v24 |
| 796 | vncipher $out1,$out1,v24 |
| 797 | vncipher $out2,$out2,v24 |
| 798 | vncipher $out3,$out3,v24 |
| 799 | vncipher $out4,$out4,v24 |
| 800 | vncipher $out5,$out5,v24 |
| 801 | vncipher $out6,$out6,v24 |
| 802 | vncipher $out7,$out7,v24 |
| 803 | lvx v24,$x20,$key_ # round[3] |
| 804 | addi $key_,$key_,0x20 |
| 805 | |
| 806 | vncipher $out0,$out0,v25 |
| 807 | vncipher $out1,$out1,v25 |
| 808 | vncipher $out2,$out2,v25 |
| 809 | vncipher $out3,$out3,v25 |
| 810 | vncipher $out4,$out4,v25 |
| 811 | vncipher $out5,$out5,v25 |
| 812 | vncipher $out6,$out6,v25 |
| 813 | vncipher $out7,$out7,v25 |
| 814 | lvx v25,$x10,$key_ # round[4] |
| 815 | bdnz Loop_cbc_dec8x |
| 816 | |
| 817 | subic $len,$len,128 # $len-=128 |
| 818 | vncipher $out0,$out0,v24 |
| 819 | vncipher $out1,$out1,v24 |
| 820 | vncipher $out2,$out2,v24 |
| 821 | vncipher $out3,$out3,v24 |
| 822 | vncipher $out4,$out4,v24 |
| 823 | vncipher $out5,$out5,v24 |
| 824 | vncipher $out6,$out6,v24 |
| 825 | vncipher $out7,$out7,v24 |
| 826 | |
| 827 | subfe. r0,r0,r0 # borrow?-1:0 |
| 828 | vncipher $out0,$out0,v25 |
| 829 | vncipher $out1,$out1,v25 |
| 830 | vncipher $out2,$out2,v25 |
| 831 | vncipher $out3,$out3,v25 |
| 832 | vncipher $out4,$out4,v25 |
| 833 | vncipher $out5,$out5,v25 |
| 834 | vncipher $out6,$out6,v25 |
| 835 | vncipher $out7,$out7,v25 |
| 836 | |
| 837 | and r0,r0,$len |
| 838 | vncipher $out0,$out0,v26 |
| 839 | vncipher $out1,$out1,v26 |
| 840 | vncipher $out2,$out2,v26 |
| 841 | vncipher $out3,$out3,v26 |
| 842 | vncipher $out4,$out4,v26 |
| 843 | vncipher $out5,$out5,v26 |
| 844 | vncipher $out6,$out6,v26 |
| 845 | vncipher $out7,$out7,v26 |
| 846 | |
| 847 | add $inp,$inp,r0 # $inp is adjusted in such |
| 848 | # way that at exit from the |
| 849 | # loop inX-in7 are loaded |
| 850 | # with last "words" |
| 851 | vncipher $out0,$out0,v27 |
| 852 | vncipher $out1,$out1,v27 |
| 853 | vncipher $out2,$out2,v27 |
| 854 | vncipher $out3,$out3,v27 |
| 855 | vncipher $out4,$out4,v27 |
| 856 | vncipher $out5,$out5,v27 |
| 857 | vncipher $out6,$out6,v27 |
| 858 | vncipher $out7,$out7,v27 |
| 859 | |
| 860 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 861 | vncipher $out0,$out0,v28 |
| 862 | vncipher $out1,$out1,v28 |
| 863 | vncipher $out2,$out2,v28 |
| 864 | vncipher $out3,$out3,v28 |
| 865 | vncipher $out4,$out4,v28 |
| 866 | vncipher $out5,$out5,v28 |
| 867 | vncipher $out6,$out6,v28 |
| 868 | vncipher $out7,$out7,v28 |
| 869 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 870 | |
| 871 | vncipher $out0,$out0,v29 |
| 872 | vncipher $out1,$out1,v29 |
| 873 | vncipher $out2,$out2,v29 |
| 874 | vncipher $out3,$out3,v29 |
| 875 | vncipher $out4,$out4,v29 |
| 876 | vncipher $out5,$out5,v29 |
| 877 | vncipher $out6,$out6,v29 |
| 878 | vncipher $out7,$out7,v29 |
| 879 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 880 | |
| 881 | vncipher $out0,$out0,v30 |
| 882 | vxor $ivec,$ivec,v31 # xor with last round key |
| 883 | vncipher $out1,$out1,v30 |
| 884 | vxor $in0,$in0,v31 |
| 885 | vncipher $out2,$out2,v30 |
| 886 | vxor $in1,$in1,v31 |
| 887 | vncipher $out3,$out3,v30 |
| 888 | vxor $in2,$in2,v31 |
| 889 | vncipher $out4,$out4,v30 |
| 890 | vxor $in3,$in3,v31 |
| 891 | vncipher $out5,$out5,v30 |
| 892 | vxor $in4,$in4,v31 |
| 893 | vncipher $out6,$out6,v30 |
| 894 | vxor $in5,$in5,v31 |
| 895 | vncipher $out7,$out7,v30 |
| 896 | vxor $in6,$in6,v31 |
| 897 | |
| 898 | vncipherlast $out0,$out0,$ivec |
| 899 | vncipherlast $out1,$out1,$in0 |
| 900 | lvx_u $in0,$x00,$inp # load next input block |
| 901 | vncipherlast $out2,$out2,$in1 |
| 902 | lvx_u $in1,$x10,$inp |
| 903 | vncipherlast $out3,$out3,$in2 |
| 904 | le?vperm $in0,$in0,$in0,$inpperm |
| 905 | lvx_u $in2,$x20,$inp |
| 906 | vncipherlast $out4,$out4,$in3 |
| 907 | le?vperm $in1,$in1,$in1,$inpperm |
| 908 | lvx_u $in3,$x30,$inp |
| 909 | vncipherlast $out5,$out5,$in4 |
| 910 | le?vperm $in2,$in2,$in2,$inpperm |
| 911 | lvx_u $in4,$x40,$inp |
| 912 | vncipherlast $out6,$out6,$in5 |
| 913 | le?vperm $in3,$in3,$in3,$inpperm |
| 914 | lvx_u $in5,$x50,$inp |
| 915 | vncipherlast $out7,$out7,$in6 |
| 916 | le?vperm $in4,$in4,$in4,$inpperm |
| 917 | lvx_u $in6,$x60,$inp |
| 918 | vmr $ivec,$in7 |
| 919 | le?vperm $in5,$in5,$in5,$inpperm |
| 920 | lvx_u $in7,$x70,$inp |
| 921 | addi $inp,$inp,0x80 |
| 922 | |
| 923 | le?vperm $out0,$out0,$out0,$inpperm |
| 924 | le?vperm $out1,$out1,$out1,$inpperm |
| 925 | stvx_u $out0,$x00,$out |
| 926 | le?vperm $in6,$in6,$in6,$inpperm |
| 927 | vxor $out0,$in0,$rndkey0 |
| 928 | le?vperm $out2,$out2,$out2,$inpperm |
| 929 | stvx_u $out1,$x10,$out |
| 930 | le?vperm $in7,$in7,$in7,$inpperm |
| 931 | vxor $out1,$in1,$rndkey0 |
| 932 | le?vperm $out3,$out3,$out3,$inpperm |
| 933 | stvx_u $out2,$x20,$out |
| 934 | vxor $out2,$in2,$rndkey0 |
| 935 | le?vperm $out4,$out4,$out4,$inpperm |
| 936 | stvx_u $out3,$x30,$out |
| 937 | vxor $out3,$in3,$rndkey0 |
| 938 | le?vperm $out5,$out5,$out5,$inpperm |
| 939 | stvx_u $out4,$x40,$out |
| 940 | vxor $out4,$in4,$rndkey0 |
| 941 | le?vperm $out6,$out6,$out6,$inpperm |
| 942 | stvx_u $out5,$x50,$out |
| 943 | vxor $out5,$in5,$rndkey0 |
| 944 | le?vperm $out7,$out7,$out7,$inpperm |
| 945 | stvx_u $out6,$x60,$out |
| 946 | vxor $out6,$in6,$rndkey0 |
| 947 | stvx_u $out7,$x70,$out |
| 948 | addi $out,$out,0x80 |
| 949 | vxor $out7,$in7,$rndkey0 |
| 950 | |
| 951 | mtctr $rounds |
| 952 | beq Loop_cbc_dec8x # did $len-=128 borrow? |
| 953 | |
| 954 | addic. $len,$len,128 |
| 955 | beq Lcbc_dec8x_done |
| 956 | nop |
| 957 | nop |
| 958 | |
| 959 | Loop_cbc_dec8x_tail: # up to 7 "words" tail... |
| 960 | vncipher $out1,$out1,v24 |
| 961 | vncipher $out2,$out2,v24 |
| 962 | vncipher $out3,$out3,v24 |
| 963 | vncipher $out4,$out4,v24 |
| 964 | vncipher $out5,$out5,v24 |
| 965 | vncipher $out6,$out6,v24 |
| 966 | vncipher $out7,$out7,v24 |
| 967 | lvx v24,$x20,$key_ # round[3] |
| 968 | addi $key_,$key_,0x20 |
| 969 | |
| 970 | vncipher $out1,$out1,v25 |
| 971 | vncipher $out2,$out2,v25 |
| 972 | vncipher $out3,$out3,v25 |
| 973 | vncipher $out4,$out4,v25 |
| 974 | vncipher $out5,$out5,v25 |
| 975 | vncipher $out6,$out6,v25 |
| 976 | vncipher $out7,$out7,v25 |
| 977 | lvx v25,$x10,$key_ # round[4] |
| 978 | bdnz Loop_cbc_dec8x_tail |
| 979 | |
| 980 | vncipher $out1,$out1,v24 |
| 981 | vncipher $out2,$out2,v24 |
| 982 | vncipher $out3,$out3,v24 |
| 983 | vncipher $out4,$out4,v24 |
| 984 | vncipher $out5,$out5,v24 |
| 985 | vncipher $out6,$out6,v24 |
| 986 | vncipher $out7,$out7,v24 |
| 987 | |
| 988 | vncipher $out1,$out1,v25 |
| 989 | vncipher $out2,$out2,v25 |
| 990 | vncipher $out3,$out3,v25 |
| 991 | vncipher $out4,$out4,v25 |
| 992 | vncipher $out5,$out5,v25 |
| 993 | vncipher $out6,$out6,v25 |
| 994 | vncipher $out7,$out7,v25 |
| 995 | |
| 996 | vncipher $out1,$out1,v26 |
| 997 | vncipher $out2,$out2,v26 |
| 998 | vncipher $out3,$out3,v26 |
| 999 | vncipher $out4,$out4,v26 |
| 1000 | vncipher $out5,$out5,v26 |
| 1001 | vncipher $out6,$out6,v26 |
| 1002 | vncipher $out7,$out7,v26 |
| 1003 | |
| 1004 | vncipher $out1,$out1,v27 |
| 1005 | vncipher $out2,$out2,v27 |
| 1006 | vncipher $out3,$out3,v27 |
| 1007 | vncipher $out4,$out4,v27 |
| 1008 | vncipher $out5,$out5,v27 |
| 1009 | vncipher $out6,$out6,v27 |
| 1010 | vncipher $out7,$out7,v27 |
| 1011 | |
| 1012 | vncipher $out1,$out1,v28 |
| 1013 | vncipher $out2,$out2,v28 |
| 1014 | vncipher $out3,$out3,v28 |
| 1015 | vncipher $out4,$out4,v28 |
| 1016 | vncipher $out5,$out5,v28 |
| 1017 | vncipher $out6,$out6,v28 |
| 1018 | vncipher $out7,$out7,v28 |
| 1019 | |
| 1020 | vncipher $out1,$out1,v29 |
| 1021 | vncipher $out2,$out2,v29 |
| 1022 | vncipher $out3,$out3,v29 |
| 1023 | vncipher $out4,$out4,v29 |
| 1024 | vncipher $out5,$out5,v29 |
| 1025 | vncipher $out6,$out6,v29 |
| 1026 | vncipher $out7,$out7,v29 |
| 1027 | |
| 1028 | vncipher $out1,$out1,v30 |
| 1029 | vxor $ivec,$ivec,v31 # last round key |
| 1030 | vncipher $out2,$out2,v30 |
| 1031 | vxor $in1,$in1,v31 |
| 1032 | vncipher $out3,$out3,v30 |
| 1033 | vxor $in2,$in2,v31 |
| 1034 | vncipher $out4,$out4,v30 |
| 1035 | vxor $in3,$in3,v31 |
| 1036 | vncipher $out5,$out5,v30 |
| 1037 | vxor $in4,$in4,v31 |
| 1038 | vncipher $out6,$out6,v30 |
| 1039 | vxor $in5,$in5,v31 |
| 1040 | vncipher $out7,$out7,v30 |
| 1041 | vxor $in6,$in6,v31 |
| 1042 | |
| 1043 | cmplwi $len,32 # switch($len) |
| 1044 | blt Lcbc_dec8x_one |
| 1045 | nop |
| 1046 | beq Lcbc_dec8x_two |
| 1047 | cmplwi $len,64 |
| 1048 | blt Lcbc_dec8x_three |
| 1049 | nop |
| 1050 | beq Lcbc_dec8x_four |
| 1051 | cmplwi $len,96 |
| 1052 | blt Lcbc_dec8x_five |
| 1053 | nop |
| 1054 | beq Lcbc_dec8x_six |
| 1055 | |
| 1056 | Lcbc_dec8x_seven: |
| 1057 | vncipherlast $out1,$out1,$ivec |
| 1058 | vncipherlast $out2,$out2,$in1 |
| 1059 | vncipherlast $out3,$out3,$in2 |
| 1060 | vncipherlast $out4,$out4,$in3 |
| 1061 | vncipherlast $out5,$out5,$in4 |
| 1062 | vncipherlast $out6,$out6,$in5 |
| 1063 | vncipherlast $out7,$out7,$in6 |
| 1064 | vmr $ivec,$in7 |
| 1065 | |
| 1066 | le?vperm $out1,$out1,$out1,$inpperm |
| 1067 | le?vperm $out2,$out2,$out2,$inpperm |
| 1068 | stvx_u $out1,$x00,$out |
| 1069 | le?vperm $out3,$out3,$out3,$inpperm |
| 1070 | stvx_u $out2,$x10,$out |
| 1071 | le?vperm $out4,$out4,$out4,$inpperm |
| 1072 | stvx_u $out3,$x20,$out |
| 1073 | le?vperm $out5,$out5,$out5,$inpperm |
| 1074 | stvx_u $out4,$x30,$out |
| 1075 | le?vperm $out6,$out6,$out6,$inpperm |
| 1076 | stvx_u $out5,$x40,$out |
| 1077 | le?vperm $out7,$out7,$out7,$inpperm |
| 1078 | stvx_u $out6,$x50,$out |
| 1079 | stvx_u $out7,$x60,$out |
| 1080 | addi $out,$out,0x70 |
| 1081 | b Lcbc_dec8x_done |
| 1082 | |
| 1083 | .align 5 |
| 1084 | Lcbc_dec8x_six: |
| 1085 | vncipherlast $out2,$out2,$ivec |
| 1086 | vncipherlast $out3,$out3,$in2 |
| 1087 | vncipherlast $out4,$out4,$in3 |
| 1088 | vncipherlast $out5,$out5,$in4 |
| 1089 | vncipherlast $out6,$out6,$in5 |
| 1090 | vncipherlast $out7,$out7,$in6 |
| 1091 | vmr $ivec,$in7 |
| 1092 | |
| 1093 | le?vperm $out2,$out2,$out2,$inpperm |
| 1094 | le?vperm $out3,$out3,$out3,$inpperm |
| 1095 | stvx_u $out2,$x00,$out |
| 1096 | le?vperm $out4,$out4,$out4,$inpperm |
| 1097 | stvx_u $out3,$x10,$out |
| 1098 | le?vperm $out5,$out5,$out5,$inpperm |
| 1099 | stvx_u $out4,$x20,$out |
| 1100 | le?vperm $out6,$out6,$out6,$inpperm |
| 1101 | stvx_u $out5,$x30,$out |
| 1102 | le?vperm $out7,$out7,$out7,$inpperm |
| 1103 | stvx_u $out6,$x40,$out |
| 1104 | stvx_u $out7,$x50,$out |
| 1105 | addi $out,$out,0x60 |
| 1106 | b Lcbc_dec8x_done |
| 1107 | |
| 1108 | .align 5 |
| 1109 | Lcbc_dec8x_five: |
| 1110 | vncipherlast $out3,$out3,$ivec |
| 1111 | vncipherlast $out4,$out4,$in3 |
| 1112 | vncipherlast $out5,$out5,$in4 |
| 1113 | vncipherlast $out6,$out6,$in5 |
| 1114 | vncipherlast $out7,$out7,$in6 |
| 1115 | vmr $ivec,$in7 |
| 1116 | |
| 1117 | le?vperm $out3,$out3,$out3,$inpperm |
| 1118 | le?vperm $out4,$out4,$out4,$inpperm |
| 1119 | stvx_u $out3,$x00,$out |
| 1120 | le?vperm $out5,$out5,$out5,$inpperm |
| 1121 | stvx_u $out4,$x10,$out |
| 1122 | le?vperm $out6,$out6,$out6,$inpperm |
| 1123 | stvx_u $out5,$x20,$out |
| 1124 | le?vperm $out7,$out7,$out7,$inpperm |
| 1125 | stvx_u $out6,$x30,$out |
| 1126 | stvx_u $out7,$x40,$out |
| 1127 | addi $out,$out,0x50 |
| 1128 | b Lcbc_dec8x_done |
| 1129 | |
| 1130 | .align 5 |
| 1131 | Lcbc_dec8x_four: |
| 1132 | vncipherlast $out4,$out4,$ivec |
| 1133 | vncipherlast $out5,$out5,$in4 |
| 1134 | vncipherlast $out6,$out6,$in5 |
| 1135 | vncipherlast $out7,$out7,$in6 |
| 1136 | vmr $ivec,$in7 |
| 1137 | |
| 1138 | le?vperm $out4,$out4,$out4,$inpperm |
| 1139 | le?vperm $out5,$out5,$out5,$inpperm |
| 1140 | stvx_u $out4,$x00,$out |
| 1141 | le?vperm $out6,$out6,$out6,$inpperm |
| 1142 | stvx_u $out5,$x10,$out |
| 1143 | le?vperm $out7,$out7,$out7,$inpperm |
| 1144 | stvx_u $out6,$x20,$out |
| 1145 | stvx_u $out7,$x30,$out |
| 1146 | addi $out,$out,0x40 |
| 1147 | b Lcbc_dec8x_done |
| 1148 | |
| 1149 | .align 5 |
| 1150 | Lcbc_dec8x_three: |
| 1151 | vncipherlast $out5,$out5,$ivec |
| 1152 | vncipherlast $out6,$out6,$in5 |
| 1153 | vncipherlast $out7,$out7,$in6 |
| 1154 | vmr $ivec,$in7 |
| 1155 | |
| 1156 | le?vperm $out5,$out5,$out5,$inpperm |
| 1157 | le?vperm $out6,$out6,$out6,$inpperm |
| 1158 | stvx_u $out5,$x00,$out |
| 1159 | le?vperm $out7,$out7,$out7,$inpperm |
| 1160 | stvx_u $out6,$x10,$out |
| 1161 | stvx_u $out7,$x20,$out |
| 1162 | addi $out,$out,0x30 |
| 1163 | b Lcbc_dec8x_done |
| 1164 | |
| 1165 | .align 5 |
| 1166 | Lcbc_dec8x_two: |
| 1167 | vncipherlast $out6,$out6,$ivec |
| 1168 | vncipherlast $out7,$out7,$in6 |
| 1169 | vmr $ivec,$in7 |
| 1170 | |
| 1171 | le?vperm $out6,$out6,$out6,$inpperm |
| 1172 | le?vperm $out7,$out7,$out7,$inpperm |
| 1173 | stvx_u $out6,$x00,$out |
| 1174 | stvx_u $out7,$x10,$out |
| 1175 | addi $out,$out,0x20 |
| 1176 | b Lcbc_dec8x_done |
| 1177 | |
| 1178 | .align 5 |
| 1179 | Lcbc_dec8x_one: |
| 1180 | vncipherlast $out7,$out7,$ivec |
| 1181 | vmr $ivec,$in7 |
| 1182 | |
| 1183 | le?vperm $out7,$out7,$out7,$inpperm |
| 1184 | stvx_u $out7,0,$out |
| 1185 | addi $out,$out,0x10 |
| 1186 | |
| 1187 | Lcbc_dec8x_done: |
| 1188 | le?vperm $ivec,$ivec,$ivec,$inpperm |
| 1189 | stvx_u $ivec,0,$ivp # write [unaligned] iv |
| 1190 | |
| 1191 | li r10,`$FRAME+15` |
| 1192 | li r11,`$FRAME+31` |
| 1193 | stvx $inpperm,r10,$sp # wipe copies of round keys |
| 1194 | addi r10,r10,32 |
| 1195 | stvx $inpperm,r11,$sp |
| 1196 | addi r11,r11,32 |
| 1197 | stvx $inpperm,r10,$sp |
| 1198 | addi r10,r10,32 |
| 1199 | stvx $inpperm,r11,$sp |
| 1200 | addi r11,r11,32 |
| 1201 | stvx $inpperm,r10,$sp |
| 1202 | addi r10,r10,32 |
| 1203 | stvx $inpperm,r11,$sp |
| 1204 | addi r11,r11,32 |
| 1205 | stvx $inpperm,r10,$sp |
| 1206 | addi r10,r10,32 |
| 1207 | stvx $inpperm,r11,$sp |
| 1208 | addi r11,r11,32 |
| 1209 | |
| 1210 | mtspr 256,$vrsave |
| 1211 | lvx v20,r10,$sp # ABI says so |
| 1212 | addi r10,r10,32 |
| 1213 | lvx v21,r11,$sp |
| 1214 | addi r11,r11,32 |
| 1215 | lvx v22,r10,$sp |
| 1216 | addi r10,r10,32 |
| 1217 | lvx v23,r11,$sp |
| 1218 | addi r11,r11,32 |
| 1219 | lvx v24,r10,$sp |
| 1220 | addi r10,r10,32 |
| 1221 | lvx v25,r11,$sp |
| 1222 | addi r11,r11,32 |
| 1223 | lvx v26,r10,$sp |
| 1224 | addi r10,r10,32 |
| 1225 | lvx v27,r11,$sp |
| 1226 | addi r11,r11,32 |
| 1227 | lvx v28,r10,$sp |
| 1228 | addi r10,r10,32 |
| 1229 | lvx v29,r11,$sp |
| 1230 | addi r11,r11,32 |
| 1231 | lvx v30,r10,$sp |
| 1232 | lvx v31,r11,$sp |
| 1233 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 1234 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 1235 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 1236 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 1237 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 1238 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 1239 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 1240 | blr |
| 1241 | .long 0 |
| 1242 | .byte 0,12,0x14,0,0x80,6,6,0 |
| 1243 | .long 0 |
| 1244 | .size .${prefix}_cbc_encrypt,.-.${prefix}_cbc_encrypt |
| 1245 | ___ |
| 1246 | }} }}} |
| 1247 | |
| 1248 | ######################################################################### |
| 1249 | {{{ # CTR procedure[s] # |
| 1250 | my ($inp,$out,$len,$key,$ivp,$x10,$rounds,$idx)=map("r$_",(3..10)); |
| 1251 | my ($rndkey0,$rndkey1,$inout,$tmp)= map("v$_",(0..3)); |
| 1252 | my ($ivec,$inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm,$one)= |
| 1253 | map("v$_",(4..11)); |
| 1254 | my $dat=$tmp; |
| 1255 | |
| 1256 | $code.=<<___; |
| 1257 | .globl .${prefix}_ctr32_encrypt_blocks |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1258 | ${UCMP}i $len,1 |
| 1259 | bltlr- |
| 1260 | |
| 1261 | lis r0,0xfff0 |
| 1262 | mfspr $vrsave,256 |
| 1263 | mtspr 256,r0 |
| 1264 | |
| 1265 | li $idx,15 |
| 1266 | vxor $rndkey0,$rndkey0,$rndkey0 |
| 1267 | le?vspltisb $tmp,0x0f |
| 1268 | |
| 1269 | lvx $ivec,0,$ivp # load [unaligned] iv |
| 1270 | lvsl $inpperm,0,$ivp |
| 1271 | lvx $inptail,$idx,$ivp |
| 1272 | vspltisb $one,1 |
| 1273 | le?vxor $inpperm,$inpperm,$tmp |
| 1274 | vperm $ivec,$ivec,$inptail,$inpperm |
| 1275 | vsldoi $one,$rndkey0,$one,1 |
| 1276 | |
| 1277 | neg r11,$inp |
| 1278 | ?lvsl $keyperm,0,$key # prepare for unaligned key |
| 1279 | lwz $rounds,240($key) |
| 1280 | |
| 1281 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 1282 | lvx $inptail,0,$inp |
| 1283 | addi $inp,$inp,15 # 15 is not typo |
| 1284 | le?vxor $inpperm,$inpperm,$tmp |
| 1285 | |
| 1286 | srwi $rounds,$rounds,1 |
| 1287 | li $idx,16 |
| 1288 | subi $rounds,$rounds,1 |
| 1289 | |
| 1290 | ${UCMP}i $len,8 |
| 1291 | bge _aesp8_ctr32_encrypt8x |
| 1292 | |
| 1293 | ?lvsr $outperm,0,$out # prepare for unaligned store |
| 1294 | vspltisb $outmask,-1 |
| 1295 | lvx $outhead,0,$out |
| 1296 | ?vperm $outmask,$rndkey0,$outmask,$outperm |
| 1297 | le?vxor $outperm,$outperm,$tmp |
| 1298 | |
| 1299 | lvx $rndkey0,0,$key |
| 1300 | mtctr $rounds |
| 1301 | lvx $rndkey1,$idx,$key |
| 1302 | addi $idx,$idx,16 |
| 1303 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1304 | vxor $inout,$ivec,$rndkey0 |
| 1305 | lvx $rndkey0,$idx,$key |
| 1306 | addi $idx,$idx,16 |
| 1307 | b Loop_ctr32_enc |
| 1308 | |
| 1309 | .align 5 |
| 1310 | Loop_ctr32_enc: |
| 1311 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1312 | vcipher $inout,$inout,$rndkey1 |
| 1313 | lvx $rndkey1,$idx,$key |
| 1314 | addi $idx,$idx,16 |
| 1315 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1316 | vcipher $inout,$inout,$rndkey0 |
| 1317 | lvx $rndkey0,$idx,$key |
| 1318 | addi $idx,$idx,16 |
| 1319 | bdnz Loop_ctr32_enc |
| 1320 | |
| 1321 | vadduwm $ivec,$ivec,$one |
| 1322 | vmr $dat,$inptail |
| 1323 | lvx $inptail,0,$inp |
| 1324 | addi $inp,$inp,16 |
| 1325 | subic. $len,$len,1 # blocks-- |
| 1326 | |
| 1327 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1328 | vcipher $inout,$inout,$rndkey1 |
| 1329 | lvx $rndkey1,$idx,$key |
| 1330 | vperm $dat,$dat,$inptail,$inpperm |
| 1331 | li $idx,16 |
| 1332 | ?vperm $rndkey1,$rndkey0,$rndkey1,$keyperm |
| 1333 | lvx $rndkey0,0,$key |
| 1334 | vxor $dat,$dat,$rndkey1 # last round key |
| 1335 | vcipherlast $inout,$inout,$dat |
| 1336 | |
| 1337 | lvx $rndkey1,$idx,$key |
| 1338 | addi $idx,$idx,16 |
| 1339 | vperm $inout,$inout,$inout,$outperm |
| 1340 | vsel $dat,$outhead,$inout,$outmask |
| 1341 | mtctr $rounds |
| 1342 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1343 | vmr $outhead,$inout |
| 1344 | vxor $inout,$ivec,$rndkey0 |
| 1345 | lvx $rndkey0,$idx,$key |
| 1346 | addi $idx,$idx,16 |
| 1347 | stvx $dat,0,$out |
| 1348 | addi $out,$out,16 |
| 1349 | bne Loop_ctr32_enc |
| 1350 | |
| 1351 | addi $out,$out,-1 |
| 1352 | lvx $inout,0,$out # redundant in aligned case |
| 1353 | vsel $inout,$outhead,$inout,$outmask |
| 1354 | stvx $inout,0,$out |
| 1355 | |
| 1356 | mtspr 256,$vrsave |
| 1357 | blr |
| 1358 | .long 0 |
| 1359 | .byte 0,12,0x14,0,0,0,6,0 |
| 1360 | .long 0 |
| 1361 | ___ |
| 1362 | ######################################################################### |
| 1363 | {{ # Optimized CTR procedure # |
| 1364 | my $key_="r11"; |
| 1365 | my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,8,26..31)); |
| 1366 | my ($in0, $in1, $in2, $in3, $in4, $in5, $in6, $in7 )=map("v$_",(0..3,10,12..14)); |
| 1367 | my ($out0,$out1,$out2,$out3,$out4,$out5,$out6,$out7)=map("v$_",(15..22)); |
| 1368 | my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys |
| 1369 | # v26-v31 last 6 round keys |
| 1370 | my ($tmp,$keyperm)=($in3,$in4); # aliases with "caller", redundant assignment |
| 1371 | my ($two,$three,$four)=($outhead,$outperm,$outmask); |
| 1372 | |
| 1373 | $code.=<<___; |
| 1374 | .align 5 |
| 1375 | _aesp8_ctr32_encrypt8x: |
| 1376 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 1377 | li r10,`$FRAME+8*16+15` |
| 1378 | li r11,`$FRAME+8*16+31` |
| 1379 | stvx v20,r10,$sp # ABI says so |
| 1380 | addi r10,r10,32 |
| 1381 | stvx v21,r11,$sp |
| 1382 | addi r11,r11,32 |
| 1383 | stvx v22,r10,$sp |
| 1384 | addi r10,r10,32 |
| 1385 | stvx v23,r11,$sp |
| 1386 | addi r11,r11,32 |
| 1387 | stvx v24,r10,$sp |
| 1388 | addi r10,r10,32 |
| 1389 | stvx v25,r11,$sp |
| 1390 | addi r11,r11,32 |
| 1391 | stvx v26,r10,$sp |
| 1392 | addi r10,r10,32 |
| 1393 | stvx v27,r11,$sp |
| 1394 | addi r11,r11,32 |
| 1395 | stvx v28,r10,$sp |
| 1396 | addi r10,r10,32 |
| 1397 | stvx v29,r11,$sp |
| 1398 | addi r11,r11,32 |
| 1399 | stvx v30,r10,$sp |
| 1400 | stvx v31,r11,$sp |
| 1401 | li r0,-1 |
| 1402 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 1403 | li $x10,0x10 |
| 1404 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 1405 | li $x20,0x20 |
| 1406 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 1407 | li $x30,0x30 |
| 1408 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 1409 | li $x40,0x40 |
| 1410 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 1411 | li $x50,0x50 |
| 1412 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 1413 | li $x60,0x60 |
| 1414 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 1415 | li $x70,0x70 |
| 1416 | mtspr 256,r0 |
| 1417 | |
| 1418 | subi $rounds,$rounds,3 # -4 in total |
| 1419 | |
| 1420 | lvx $rndkey0,$x00,$key # load key schedule |
| 1421 | lvx v30,$x10,$key |
| 1422 | addi $key,$key,0x20 |
| 1423 | lvx v31,$x00,$key |
| 1424 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
| 1425 | addi $key_,$sp,$FRAME+15 |
| 1426 | mtctr $rounds |
| 1427 | |
| 1428 | Load_ctr32_enc_key: |
| 1429 | ?vperm v24,v30,v31,$keyperm |
| 1430 | lvx v30,$x10,$key |
| 1431 | addi $key,$key,0x20 |
| 1432 | stvx v24,$x00,$key_ # off-load round[1] |
| 1433 | ?vperm v25,v31,v30,$keyperm |
| 1434 | lvx v31,$x00,$key |
| 1435 | stvx v25,$x10,$key_ # off-load round[2] |
| 1436 | addi $key_,$key_,0x20 |
| 1437 | bdnz Load_ctr32_enc_key |
| 1438 | |
| 1439 | lvx v26,$x10,$key |
| 1440 | ?vperm v24,v30,v31,$keyperm |
| 1441 | lvx v27,$x20,$key |
| 1442 | stvx v24,$x00,$key_ # off-load round[3] |
| 1443 | ?vperm v25,v31,v26,$keyperm |
| 1444 | lvx v28,$x30,$key |
| 1445 | stvx v25,$x10,$key_ # off-load round[4] |
| 1446 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 1447 | ?vperm v26,v26,v27,$keyperm |
| 1448 | lvx v29,$x40,$key |
| 1449 | ?vperm v27,v27,v28,$keyperm |
| 1450 | lvx v30,$x50,$key |
| 1451 | ?vperm v28,v28,v29,$keyperm |
| 1452 | lvx v31,$x60,$key |
| 1453 | ?vperm v29,v29,v30,$keyperm |
| 1454 | lvx $out0,$x70,$key # borrow $out0 |
| 1455 | ?vperm v30,v30,v31,$keyperm |
| 1456 | lvx v24,$x00,$key_ # pre-load round[1] |
| 1457 | ?vperm v31,v31,$out0,$keyperm |
| 1458 | lvx v25,$x10,$key_ # pre-load round[2] |
| 1459 | |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1460 | vadduqm $two,$one,$one |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1461 | subi $inp,$inp,15 # undo "caller" |
| 1462 | $SHL $len,$len,4 |
| 1463 | |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1464 | vadduqm $out1,$ivec,$one # counter values ... |
| 1465 | vadduqm $out2,$ivec,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1466 | vxor $out0,$ivec,$rndkey0 # ... xored with rndkey[0] |
| 1467 | le?li $idx,8 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1468 | vadduqm $out3,$out1,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1469 | vxor $out1,$out1,$rndkey0 |
| 1470 | le?lvsl $inpperm,0,$idx |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1471 | vadduqm $out4,$out2,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1472 | vxor $out2,$out2,$rndkey0 |
| 1473 | le?vspltisb $tmp,0x0f |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1474 | vadduqm $out5,$out3,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1475 | vxor $out3,$out3,$rndkey0 |
| 1476 | le?vxor $inpperm,$inpperm,$tmp # transform for lvx_u/stvx_u |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1477 | vadduqm $out6,$out4,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1478 | vxor $out4,$out4,$rndkey0 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1479 | vadduqm $out7,$out5,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1480 | vxor $out5,$out5,$rndkey0 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1481 | vadduqm $ivec,$out6,$two # next counter value |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1482 | vxor $out6,$out6,$rndkey0 |
| 1483 | vxor $out7,$out7,$rndkey0 |
| 1484 | |
| 1485 | mtctr $rounds |
| 1486 | b Loop_ctr32_enc8x |
| 1487 | .align 5 |
| 1488 | Loop_ctr32_enc8x: |
| 1489 | vcipher $out0,$out0,v24 |
| 1490 | vcipher $out1,$out1,v24 |
| 1491 | vcipher $out2,$out2,v24 |
| 1492 | vcipher $out3,$out3,v24 |
| 1493 | vcipher $out4,$out4,v24 |
| 1494 | vcipher $out5,$out5,v24 |
| 1495 | vcipher $out6,$out6,v24 |
| 1496 | vcipher $out7,$out7,v24 |
| 1497 | Loop_ctr32_enc8x_middle: |
| 1498 | lvx v24,$x20,$key_ # round[3] |
| 1499 | addi $key_,$key_,0x20 |
| 1500 | |
| 1501 | vcipher $out0,$out0,v25 |
| 1502 | vcipher $out1,$out1,v25 |
| 1503 | vcipher $out2,$out2,v25 |
| 1504 | vcipher $out3,$out3,v25 |
| 1505 | vcipher $out4,$out4,v25 |
| 1506 | vcipher $out5,$out5,v25 |
| 1507 | vcipher $out6,$out6,v25 |
| 1508 | vcipher $out7,$out7,v25 |
| 1509 | lvx v25,$x10,$key_ # round[4] |
| 1510 | bdnz Loop_ctr32_enc8x |
| 1511 | |
| 1512 | subic r11,$len,256 # $len-256, borrow $key_ |
| 1513 | vcipher $out0,$out0,v24 |
| 1514 | vcipher $out1,$out1,v24 |
| 1515 | vcipher $out2,$out2,v24 |
| 1516 | vcipher $out3,$out3,v24 |
| 1517 | vcipher $out4,$out4,v24 |
| 1518 | vcipher $out5,$out5,v24 |
| 1519 | vcipher $out6,$out6,v24 |
| 1520 | vcipher $out7,$out7,v24 |
| 1521 | |
| 1522 | subfe r0,r0,r0 # borrow?-1:0 |
| 1523 | vcipher $out0,$out0,v25 |
| 1524 | vcipher $out1,$out1,v25 |
| 1525 | vcipher $out2,$out2,v25 |
| 1526 | vcipher $out3,$out3,v25 |
| 1527 | vcipher $out4,$out4,v25 |
| 1528 | vcipher $out5,$out5,v25 |
| 1529 | vcipher $out6,$out6,v25 |
| 1530 | vcipher $out7,$out7,v25 |
| 1531 | |
| 1532 | and r0,r0,r11 |
| 1533 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 1534 | vcipher $out0,$out0,v26 |
| 1535 | vcipher $out1,$out1,v26 |
| 1536 | vcipher $out2,$out2,v26 |
| 1537 | vcipher $out3,$out3,v26 |
| 1538 | vcipher $out4,$out4,v26 |
| 1539 | vcipher $out5,$out5,v26 |
| 1540 | vcipher $out6,$out6,v26 |
| 1541 | vcipher $out7,$out7,v26 |
| 1542 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 1543 | |
| 1544 | subic $len,$len,129 # $len-=129 |
| 1545 | vcipher $out0,$out0,v27 |
| 1546 | addi $len,$len,1 # $len-=128 really |
| 1547 | vcipher $out1,$out1,v27 |
| 1548 | vcipher $out2,$out2,v27 |
| 1549 | vcipher $out3,$out3,v27 |
| 1550 | vcipher $out4,$out4,v27 |
| 1551 | vcipher $out5,$out5,v27 |
| 1552 | vcipher $out6,$out6,v27 |
| 1553 | vcipher $out7,$out7,v27 |
| 1554 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 1555 | |
| 1556 | vcipher $out0,$out0,v28 |
| 1557 | lvx_u $in0,$x00,$inp # load input |
| 1558 | vcipher $out1,$out1,v28 |
| 1559 | lvx_u $in1,$x10,$inp |
| 1560 | vcipher $out2,$out2,v28 |
| 1561 | lvx_u $in2,$x20,$inp |
| 1562 | vcipher $out3,$out3,v28 |
| 1563 | lvx_u $in3,$x30,$inp |
| 1564 | vcipher $out4,$out4,v28 |
| 1565 | lvx_u $in4,$x40,$inp |
| 1566 | vcipher $out5,$out5,v28 |
| 1567 | lvx_u $in5,$x50,$inp |
| 1568 | vcipher $out6,$out6,v28 |
| 1569 | lvx_u $in6,$x60,$inp |
| 1570 | vcipher $out7,$out7,v28 |
| 1571 | lvx_u $in7,$x70,$inp |
| 1572 | addi $inp,$inp,0x80 |
| 1573 | |
| 1574 | vcipher $out0,$out0,v29 |
| 1575 | le?vperm $in0,$in0,$in0,$inpperm |
| 1576 | vcipher $out1,$out1,v29 |
| 1577 | le?vperm $in1,$in1,$in1,$inpperm |
| 1578 | vcipher $out2,$out2,v29 |
| 1579 | le?vperm $in2,$in2,$in2,$inpperm |
| 1580 | vcipher $out3,$out3,v29 |
| 1581 | le?vperm $in3,$in3,$in3,$inpperm |
| 1582 | vcipher $out4,$out4,v29 |
| 1583 | le?vperm $in4,$in4,$in4,$inpperm |
| 1584 | vcipher $out5,$out5,v29 |
| 1585 | le?vperm $in5,$in5,$in5,$inpperm |
| 1586 | vcipher $out6,$out6,v29 |
| 1587 | le?vperm $in6,$in6,$in6,$inpperm |
| 1588 | vcipher $out7,$out7,v29 |
| 1589 | le?vperm $in7,$in7,$in7,$inpperm |
| 1590 | |
| 1591 | add $inp,$inp,r0 # $inp is adjusted in such |
| 1592 | # way that at exit from the |
| 1593 | # loop inX-in7 are loaded |
| 1594 | # with last "words" |
| 1595 | subfe. r0,r0,r0 # borrow?-1:0 |
| 1596 | vcipher $out0,$out0,v30 |
| 1597 | vxor $in0,$in0,v31 # xor with last round key |
| 1598 | vcipher $out1,$out1,v30 |
| 1599 | vxor $in1,$in1,v31 |
| 1600 | vcipher $out2,$out2,v30 |
| 1601 | vxor $in2,$in2,v31 |
| 1602 | vcipher $out3,$out3,v30 |
| 1603 | vxor $in3,$in3,v31 |
| 1604 | vcipher $out4,$out4,v30 |
| 1605 | vxor $in4,$in4,v31 |
| 1606 | vcipher $out5,$out5,v30 |
| 1607 | vxor $in5,$in5,v31 |
| 1608 | vcipher $out6,$out6,v30 |
| 1609 | vxor $in6,$in6,v31 |
| 1610 | vcipher $out7,$out7,v30 |
| 1611 | vxor $in7,$in7,v31 |
| 1612 | |
| 1613 | bne Lctr32_enc8x_break # did $len-129 borrow? |
| 1614 | |
| 1615 | vcipherlast $in0,$out0,$in0 |
| 1616 | vcipherlast $in1,$out1,$in1 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1617 | vadduqm $out1,$ivec,$one # counter values ... |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1618 | vcipherlast $in2,$out2,$in2 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1619 | vadduqm $out2,$ivec,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1620 | vxor $out0,$ivec,$rndkey0 # ... xored with rndkey[0] |
| 1621 | vcipherlast $in3,$out3,$in3 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1622 | vadduqm $out3,$out1,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1623 | vxor $out1,$out1,$rndkey0 |
| 1624 | vcipherlast $in4,$out4,$in4 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1625 | vadduqm $out4,$out2,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1626 | vxor $out2,$out2,$rndkey0 |
| 1627 | vcipherlast $in5,$out5,$in5 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1628 | vadduqm $out5,$out3,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1629 | vxor $out3,$out3,$rndkey0 |
| 1630 | vcipherlast $in6,$out6,$in6 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1631 | vadduqm $out6,$out4,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1632 | vxor $out4,$out4,$rndkey0 |
| 1633 | vcipherlast $in7,$out7,$in7 |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1634 | vadduqm $out7,$out5,$two |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1635 | vxor $out5,$out5,$rndkey0 |
| 1636 | le?vperm $in0,$in0,$in0,$inpperm |
| Leonidas Da Silva Barbosa | 1d4aa0b | 2015-08-14 10:12:22 -0300 | [diff] [blame] | 1637 | vadduqm $ivec,$out6,$two # next counter value |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 1638 | vxor $out6,$out6,$rndkey0 |
| 1639 | le?vperm $in1,$in1,$in1,$inpperm |
| 1640 | vxor $out7,$out7,$rndkey0 |
| 1641 | mtctr $rounds |
| 1642 | |
| 1643 | vcipher $out0,$out0,v24 |
| 1644 | stvx_u $in0,$x00,$out |
| 1645 | le?vperm $in2,$in2,$in2,$inpperm |
| 1646 | vcipher $out1,$out1,v24 |
| 1647 | stvx_u $in1,$x10,$out |
| 1648 | le?vperm $in3,$in3,$in3,$inpperm |
| 1649 | vcipher $out2,$out2,v24 |
| 1650 | stvx_u $in2,$x20,$out |
| 1651 | le?vperm $in4,$in4,$in4,$inpperm |
| 1652 | vcipher $out3,$out3,v24 |
| 1653 | stvx_u $in3,$x30,$out |
| 1654 | le?vperm $in5,$in5,$in5,$inpperm |
| 1655 | vcipher $out4,$out4,v24 |
| 1656 | stvx_u $in4,$x40,$out |
| 1657 | le?vperm $in6,$in6,$in6,$inpperm |
| 1658 | vcipher $out5,$out5,v24 |
| 1659 | stvx_u $in5,$x50,$out |
| 1660 | le?vperm $in7,$in7,$in7,$inpperm |
| 1661 | vcipher $out6,$out6,v24 |
| 1662 | stvx_u $in6,$x60,$out |
| 1663 | vcipher $out7,$out7,v24 |
| 1664 | stvx_u $in7,$x70,$out |
| 1665 | addi $out,$out,0x80 |
| 1666 | |
| 1667 | b Loop_ctr32_enc8x_middle |
| 1668 | |
| 1669 | .align 5 |
| 1670 | Lctr32_enc8x_break: |
| 1671 | cmpwi $len,-0x60 |
| 1672 | blt Lctr32_enc8x_one |
| 1673 | nop |
| 1674 | beq Lctr32_enc8x_two |
| 1675 | cmpwi $len,-0x40 |
| 1676 | blt Lctr32_enc8x_three |
| 1677 | nop |
| 1678 | beq Lctr32_enc8x_four |
| 1679 | cmpwi $len,-0x20 |
| 1680 | blt Lctr32_enc8x_five |
| 1681 | nop |
| 1682 | beq Lctr32_enc8x_six |
| 1683 | cmpwi $len,0x00 |
| 1684 | blt Lctr32_enc8x_seven |
| 1685 | |
| 1686 | Lctr32_enc8x_eight: |
| 1687 | vcipherlast $out0,$out0,$in0 |
| 1688 | vcipherlast $out1,$out1,$in1 |
| 1689 | vcipherlast $out2,$out2,$in2 |
| 1690 | vcipherlast $out3,$out3,$in3 |
| 1691 | vcipherlast $out4,$out4,$in4 |
| 1692 | vcipherlast $out5,$out5,$in5 |
| 1693 | vcipherlast $out6,$out6,$in6 |
| 1694 | vcipherlast $out7,$out7,$in7 |
| 1695 | |
| 1696 | le?vperm $out0,$out0,$out0,$inpperm |
| 1697 | le?vperm $out1,$out1,$out1,$inpperm |
| 1698 | stvx_u $out0,$x00,$out |
| 1699 | le?vperm $out2,$out2,$out2,$inpperm |
| 1700 | stvx_u $out1,$x10,$out |
| 1701 | le?vperm $out3,$out3,$out3,$inpperm |
| 1702 | stvx_u $out2,$x20,$out |
| 1703 | le?vperm $out4,$out4,$out4,$inpperm |
| 1704 | stvx_u $out3,$x30,$out |
| 1705 | le?vperm $out5,$out5,$out5,$inpperm |
| 1706 | stvx_u $out4,$x40,$out |
| 1707 | le?vperm $out6,$out6,$out6,$inpperm |
| 1708 | stvx_u $out5,$x50,$out |
| 1709 | le?vperm $out7,$out7,$out7,$inpperm |
| 1710 | stvx_u $out6,$x60,$out |
| 1711 | stvx_u $out7,$x70,$out |
| 1712 | addi $out,$out,0x80 |
| 1713 | b Lctr32_enc8x_done |
| 1714 | |
| 1715 | .align 5 |
| 1716 | Lctr32_enc8x_seven: |
| 1717 | vcipherlast $out0,$out0,$in1 |
| 1718 | vcipherlast $out1,$out1,$in2 |
| 1719 | vcipherlast $out2,$out2,$in3 |
| 1720 | vcipherlast $out3,$out3,$in4 |
| 1721 | vcipherlast $out4,$out4,$in5 |
| 1722 | vcipherlast $out5,$out5,$in6 |
| 1723 | vcipherlast $out6,$out6,$in7 |
| 1724 | |
| 1725 | le?vperm $out0,$out0,$out0,$inpperm |
| 1726 | le?vperm $out1,$out1,$out1,$inpperm |
| 1727 | stvx_u $out0,$x00,$out |
| 1728 | le?vperm $out2,$out2,$out2,$inpperm |
| 1729 | stvx_u $out1,$x10,$out |
| 1730 | le?vperm $out3,$out3,$out3,$inpperm |
| 1731 | stvx_u $out2,$x20,$out |
| 1732 | le?vperm $out4,$out4,$out4,$inpperm |
| 1733 | stvx_u $out3,$x30,$out |
| 1734 | le?vperm $out5,$out5,$out5,$inpperm |
| 1735 | stvx_u $out4,$x40,$out |
| 1736 | le?vperm $out6,$out6,$out6,$inpperm |
| 1737 | stvx_u $out5,$x50,$out |
| 1738 | stvx_u $out6,$x60,$out |
| 1739 | addi $out,$out,0x70 |
| 1740 | b Lctr32_enc8x_done |
| 1741 | |
| 1742 | .align 5 |
| 1743 | Lctr32_enc8x_six: |
| 1744 | vcipherlast $out0,$out0,$in2 |
| 1745 | vcipherlast $out1,$out1,$in3 |
| 1746 | vcipherlast $out2,$out2,$in4 |
| 1747 | vcipherlast $out3,$out3,$in5 |
| 1748 | vcipherlast $out4,$out4,$in6 |
| 1749 | vcipherlast $out5,$out5,$in7 |
| 1750 | |
| 1751 | le?vperm $out0,$out0,$out0,$inpperm |
| 1752 | le?vperm $out1,$out1,$out1,$inpperm |
| 1753 | stvx_u $out0,$x00,$out |
| 1754 | le?vperm $out2,$out2,$out2,$inpperm |
| 1755 | stvx_u $out1,$x10,$out |
| 1756 | le?vperm $out3,$out3,$out3,$inpperm |
| 1757 | stvx_u $out2,$x20,$out |
| 1758 | le?vperm $out4,$out4,$out4,$inpperm |
| 1759 | stvx_u $out3,$x30,$out |
| 1760 | le?vperm $out5,$out5,$out5,$inpperm |
| 1761 | stvx_u $out4,$x40,$out |
| 1762 | stvx_u $out5,$x50,$out |
| 1763 | addi $out,$out,0x60 |
| 1764 | b Lctr32_enc8x_done |
| 1765 | |
| 1766 | .align 5 |
| 1767 | Lctr32_enc8x_five: |
| 1768 | vcipherlast $out0,$out0,$in3 |
| 1769 | vcipherlast $out1,$out1,$in4 |
| 1770 | vcipherlast $out2,$out2,$in5 |
| 1771 | vcipherlast $out3,$out3,$in6 |
| 1772 | vcipherlast $out4,$out4,$in7 |
| 1773 | |
| 1774 | le?vperm $out0,$out0,$out0,$inpperm |
| 1775 | le?vperm $out1,$out1,$out1,$inpperm |
| 1776 | stvx_u $out0,$x00,$out |
| 1777 | le?vperm $out2,$out2,$out2,$inpperm |
| 1778 | stvx_u $out1,$x10,$out |
| 1779 | le?vperm $out3,$out3,$out3,$inpperm |
| 1780 | stvx_u $out2,$x20,$out |
| 1781 | le?vperm $out4,$out4,$out4,$inpperm |
| 1782 | stvx_u $out3,$x30,$out |
| 1783 | stvx_u $out4,$x40,$out |
| 1784 | addi $out,$out,0x50 |
| 1785 | b Lctr32_enc8x_done |
| 1786 | |
| 1787 | .align 5 |
| 1788 | Lctr32_enc8x_four: |
| 1789 | vcipherlast $out0,$out0,$in4 |
| 1790 | vcipherlast $out1,$out1,$in5 |
| 1791 | vcipherlast $out2,$out2,$in6 |
| 1792 | vcipherlast $out3,$out3,$in7 |
| 1793 | |
| 1794 | le?vperm $out0,$out0,$out0,$inpperm |
| 1795 | le?vperm $out1,$out1,$out1,$inpperm |
| 1796 | stvx_u $out0,$x00,$out |
| 1797 | le?vperm $out2,$out2,$out2,$inpperm |
| 1798 | stvx_u $out1,$x10,$out |
| 1799 | le?vperm $out3,$out3,$out3,$inpperm |
| 1800 | stvx_u $out2,$x20,$out |
| 1801 | stvx_u $out3,$x30,$out |
| 1802 | addi $out,$out,0x40 |
| 1803 | b Lctr32_enc8x_done |
| 1804 | |
| 1805 | .align 5 |
| 1806 | Lctr32_enc8x_three: |
| 1807 | vcipherlast $out0,$out0,$in5 |
| 1808 | vcipherlast $out1,$out1,$in6 |
| 1809 | vcipherlast $out2,$out2,$in7 |
| 1810 | |
| 1811 | le?vperm $out0,$out0,$out0,$inpperm |
| 1812 | le?vperm $out1,$out1,$out1,$inpperm |
| 1813 | stvx_u $out0,$x00,$out |
| 1814 | le?vperm $out2,$out2,$out2,$inpperm |
| 1815 | stvx_u $out1,$x10,$out |
| 1816 | stvx_u $out2,$x20,$out |
| 1817 | addi $out,$out,0x30 |
| 1818 | b Lcbc_dec8x_done |
| 1819 | |
| 1820 | .align 5 |
| 1821 | Lctr32_enc8x_two: |
| 1822 | vcipherlast $out0,$out0,$in6 |
| 1823 | vcipherlast $out1,$out1,$in7 |
| 1824 | |
| 1825 | le?vperm $out0,$out0,$out0,$inpperm |
| 1826 | le?vperm $out1,$out1,$out1,$inpperm |
| 1827 | stvx_u $out0,$x00,$out |
| 1828 | stvx_u $out1,$x10,$out |
| 1829 | addi $out,$out,0x20 |
| 1830 | b Lcbc_dec8x_done |
| 1831 | |
| 1832 | .align 5 |
| 1833 | Lctr32_enc8x_one: |
| 1834 | vcipherlast $out0,$out0,$in7 |
| 1835 | |
| 1836 | le?vperm $out0,$out0,$out0,$inpperm |
| 1837 | stvx_u $out0,0,$out |
| 1838 | addi $out,$out,0x10 |
| 1839 | |
| 1840 | Lctr32_enc8x_done: |
| 1841 | li r10,`$FRAME+15` |
| 1842 | li r11,`$FRAME+31` |
| 1843 | stvx $inpperm,r10,$sp # wipe copies of round keys |
| 1844 | addi r10,r10,32 |
| 1845 | stvx $inpperm,r11,$sp |
| 1846 | addi r11,r11,32 |
| 1847 | stvx $inpperm,r10,$sp |
| 1848 | addi r10,r10,32 |
| 1849 | stvx $inpperm,r11,$sp |
| 1850 | addi r11,r11,32 |
| 1851 | stvx $inpperm,r10,$sp |
| 1852 | addi r10,r10,32 |
| 1853 | stvx $inpperm,r11,$sp |
| 1854 | addi r11,r11,32 |
| 1855 | stvx $inpperm,r10,$sp |
| 1856 | addi r10,r10,32 |
| 1857 | stvx $inpperm,r11,$sp |
| 1858 | addi r11,r11,32 |
| 1859 | |
| 1860 | mtspr 256,$vrsave |
| 1861 | lvx v20,r10,$sp # ABI says so |
| 1862 | addi r10,r10,32 |
| 1863 | lvx v21,r11,$sp |
| 1864 | addi r11,r11,32 |
| 1865 | lvx v22,r10,$sp |
| 1866 | addi r10,r10,32 |
| 1867 | lvx v23,r11,$sp |
| 1868 | addi r11,r11,32 |
| 1869 | lvx v24,r10,$sp |
| 1870 | addi r10,r10,32 |
| 1871 | lvx v25,r11,$sp |
| 1872 | addi r11,r11,32 |
| 1873 | lvx v26,r10,$sp |
| 1874 | addi r10,r10,32 |
| 1875 | lvx v27,r11,$sp |
| 1876 | addi r11,r11,32 |
| 1877 | lvx v28,r10,$sp |
| 1878 | addi r10,r10,32 |
| 1879 | lvx v29,r11,$sp |
| 1880 | addi r11,r11,32 |
| 1881 | lvx v30,r10,$sp |
| 1882 | lvx v31,r11,$sp |
| 1883 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 1884 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 1885 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 1886 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 1887 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 1888 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 1889 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 1890 | blr |
| 1891 | .long 0 |
| 1892 | .byte 0,12,0x14,0,0x80,6,6,0 |
| 1893 | .long 0 |
| 1894 | .size .${prefix}_ctr32_encrypt_blocks,.-.${prefix}_ctr32_encrypt_blocks |
| 1895 | ___ |
| 1896 | }} }}} |
| 1897 | |
| Paulo Flabiano Smorigo | 11c6e16 | 2016-07-18 12:26:25 -0300 | [diff] [blame] | 1898 | ######################################################################### |
| 1899 | {{{ # XTS procedures # |
| 1900 | # int aes_p8_xts_[en|de]crypt(const char *inp, char *out, size_t len, # |
| 1901 | # const AES_KEY *key1, const AES_KEY *key2, # |
| 1902 | # [const] unsigned char iv[16]); # |
| 1903 | # If $key2 is NULL, then a "tweak chaining" mode is engaged, in which # |
| 1904 | # input tweak value is assumed to be encrypted already, and last tweak # |
| 1905 | # value, one suitable for consecutive call on same chunk of data, is # |
| 1906 | # written back to original buffer. In addition, in "tweak chaining" # |
| 1907 | # mode only complete input blocks are processed. # |
| 1908 | |
| 1909 | my ($inp,$out,$len,$key1,$key2,$ivp,$rounds,$idx) = map("r$_",(3..10)); |
| 1910 | my ($rndkey0,$rndkey1,$inout) = map("v$_",(0..2)); |
| 1911 | my ($output,$inptail,$inpperm,$leperm,$keyperm) = map("v$_",(3..7)); |
| 1912 | my ($tweak,$seven,$eighty7,$tmp,$tweak1) = map("v$_",(8..12)); |
| 1913 | my $taillen = $key2; |
| 1914 | |
| 1915 | ($inp,$idx) = ($idx,$inp); # reassign |
| 1916 | |
| 1917 | $code.=<<___; |
| 1918 | .globl .${prefix}_xts_encrypt |
| 1919 | mr $inp,r3 # reassign |
| 1920 | li r3,-1 |
| 1921 | ${UCMP}i $len,16 |
| 1922 | bltlr- |
| 1923 | |
| 1924 | lis r0,0xfff0 |
| 1925 | mfspr r12,256 # save vrsave |
| 1926 | li r11,0 |
| 1927 | mtspr 256,r0 |
| 1928 | |
| 1929 | vspltisb $seven,0x07 # 0x070707..07 |
| 1930 | le?lvsl $leperm,r11,r11 |
| 1931 | le?vspltisb $tmp,0x0f |
| 1932 | le?vxor $leperm,$leperm,$seven |
| 1933 | |
| 1934 | li $idx,15 |
| 1935 | lvx $tweak,0,$ivp # load [unaligned] iv |
| 1936 | lvsl $inpperm,0,$ivp |
| 1937 | lvx $inptail,$idx,$ivp |
| 1938 | le?vxor $inpperm,$inpperm,$tmp |
| 1939 | vperm $tweak,$tweak,$inptail,$inpperm |
| 1940 | |
| 1941 | neg r11,$inp |
| 1942 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 1943 | lvx $inout,0,$inp |
| 1944 | addi $inp,$inp,15 # 15 is not typo |
| 1945 | le?vxor $inpperm,$inpperm,$tmp |
| 1946 | |
| 1947 | ${UCMP}i $key2,0 # key2==NULL? |
| 1948 | beq Lxts_enc_no_key2 |
| 1949 | |
| 1950 | ?lvsl $keyperm,0,$key2 # prepare for unaligned key |
| 1951 | lwz $rounds,240($key2) |
| 1952 | srwi $rounds,$rounds,1 |
| 1953 | subi $rounds,$rounds,1 |
| 1954 | li $idx,16 |
| 1955 | |
| 1956 | lvx $rndkey0,0,$key2 |
| 1957 | lvx $rndkey1,$idx,$key2 |
| 1958 | addi $idx,$idx,16 |
| 1959 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1960 | vxor $tweak,$tweak,$rndkey0 |
| 1961 | lvx $rndkey0,$idx,$key2 |
| 1962 | addi $idx,$idx,16 |
| 1963 | mtctr $rounds |
| 1964 | |
| 1965 | Ltweak_xts_enc: |
| 1966 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1967 | vcipher $tweak,$tweak,$rndkey1 |
| 1968 | lvx $rndkey1,$idx,$key2 |
| 1969 | addi $idx,$idx,16 |
| 1970 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1971 | vcipher $tweak,$tweak,$rndkey0 |
| 1972 | lvx $rndkey0,$idx,$key2 |
| 1973 | addi $idx,$idx,16 |
| 1974 | bdnz Ltweak_xts_enc |
| 1975 | |
| 1976 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1977 | vcipher $tweak,$tweak,$rndkey1 |
| 1978 | lvx $rndkey1,$idx,$key2 |
| 1979 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1980 | vcipherlast $tweak,$tweak,$rndkey0 |
| 1981 | |
| 1982 | li $ivp,0 # don't chain the tweak |
| 1983 | b Lxts_enc |
| 1984 | |
| 1985 | Lxts_enc_no_key2: |
| 1986 | li $idx,-16 |
| 1987 | and $len,$len,$idx # in "tweak chaining" |
| 1988 | # mode only complete |
| 1989 | # blocks are processed |
| 1990 | Lxts_enc: |
| 1991 | lvx $inptail,0,$inp |
| 1992 | addi $inp,$inp,16 |
| 1993 | |
| 1994 | ?lvsl $keyperm,0,$key1 # prepare for unaligned key |
| 1995 | lwz $rounds,240($key1) |
| 1996 | srwi $rounds,$rounds,1 |
| 1997 | subi $rounds,$rounds,1 |
| 1998 | li $idx,16 |
| 1999 | |
| 2000 | vslb $eighty7,$seven,$seven # 0x808080..80 |
| 2001 | vor $eighty7,$eighty7,$seven # 0x878787..87 |
| 2002 | vspltisb $tmp,1 # 0x010101..01 |
| 2003 | vsldoi $eighty7,$eighty7,$tmp,15 # 0x870101..01 |
| 2004 | |
| 2005 | ${UCMP}i $len,96 |
| 2006 | bge _aesp8_xts_encrypt6x |
| 2007 | |
| 2008 | andi. $taillen,$len,15 |
| 2009 | subic r0,$len,32 |
| 2010 | subi $taillen,$taillen,16 |
| 2011 | subfe r0,r0,r0 |
| 2012 | and r0,r0,$taillen |
| 2013 | add $inp,$inp,r0 |
| 2014 | |
| 2015 | lvx $rndkey0,0,$key1 |
| 2016 | lvx $rndkey1,$idx,$key1 |
| 2017 | addi $idx,$idx,16 |
| 2018 | vperm $inout,$inout,$inptail,$inpperm |
| 2019 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2020 | vxor $inout,$inout,$tweak |
| 2021 | vxor $inout,$inout,$rndkey0 |
| 2022 | lvx $rndkey0,$idx,$key1 |
| 2023 | addi $idx,$idx,16 |
| 2024 | mtctr $rounds |
| 2025 | b Loop_xts_enc |
| 2026 | |
| 2027 | .align 5 |
| 2028 | Loop_xts_enc: |
| 2029 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2030 | vcipher $inout,$inout,$rndkey1 |
| 2031 | lvx $rndkey1,$idx,$key1 |
| 2032 | addi $idx,$idx,16 |
| 2033 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2034 | vcipher $inout,$inout,$rndkey0 |
| 2035 | lvx $rndkey0,$idx,$key1 |
| 2036 | addi $idx,$idx,16 |
| 2037 | bdnz Loop_xts_enc |
| 2038 | |
| 2039 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2040 | vcipher $inout,$inout,$rndkey1 |
| 2041 | lvx $rndkey1,$idx,$key1 |
| 2042 | li $idx,16 |
| 2043 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2044 | vxor $rndkey0,$rndkey0,$tweak |
| 2045 | vcipherlast $output,$inout,$rndkey0 |
| 2046 | |
| 2047 | le?vperm $tmp,$output,$output,$leperm |
| 2048 | be?nop |
| 2049 | le?stvx_u $tmp,0,$out |
| 2050 | be?stvx_u $output,0,$out |
| 2051 | addi $out,$out,16 |
| 2052 | |
| 2053 | subic. $len,$len,16 |
| 2054 | beq Lxts_enc_done |
| 2055 | |
| 2056 | vmr $inout,$inptail |
| 2057 | lvx $inptail,0,$inp |
| 2058 | addi $inp,$inp,16 |
| 2059 | lvx $rndkey0,0,$key1 |
| 2060 | lvx $rndkey1,$idx,$key1 |
| 2061 | addi $idx,$idx,16 |
| 2062 | |
| 2063 | subic r0,$len,32 |
| 2064 | subfe r0,r0,r0 |
| 2065 | and r0,r0,$taillen |
| 2066 | add $inp,$inp,r0 |
| 2067 | |
| 2068 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2069 | vaddubm $tweak,$tweak,$tweak |
| 2070 | vsldoi $tmp,$tmp,$tmp,15 |
| 2071 | vand $tmp,$tmp,$eighty7 |
| 2072 | vxor $tweak,$tweak,$tmp |
| 2073 | |
| 2074 | vperm $inout,$inout,$inptail,$inpperm |
| 2075 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2076 | vxor $inout,$inout,$tweak |
| 2077 | vxor $output,$output,$rndkey0 # just in case $len<16 |
| 2078 | vxor $inout,$inout,$rndkey0 |
| 2079 | lvx $rndkey0,$idx,$key1 |
| 2080 | addi $idx,$idx,16 |
| 2081 | |
| 2082 | mtctr $rounds |
| 2083 | ${UCMP}i $len,16 |
| 2084 | bge Loop_xts_enc |
| 2085 | |
| 2086 | vxor $output,$output,$tweak |
| 2087 | lvsr $inpperm,0,$len # $inpperm is no longer needed |
| 2088 | vxor $inptail,$inptail,$inptail # $inptail is no longer needed |
| 2089 | vspltisb $tmp,-1 |
| 2090 | vperm $inptail,$inptail,$tmp,$inpperm |
| 2091 | vsel $inout,$inout,$output,$inptail |
| 2092 | |
| 2093 | subi r11,$out,17 |
| 2094 | subi $out,$out,16 |
| 2095 | mtctr $len |
| 2096 | li $len,16 |
| 2097 | Loop_xts_enc_steal: |
| 2098 | lbzu r0,1(r11) |
| 2099 | stb r0,16(r11) |
| 2100 | bdnz Loop_xts_enc_steal |
| 2101 | |
| 2102 | mtctr $rounds |
| 2103 | b Loop_xts_enc # one more time... |
| 2104 | |
| 2105 | Lxts_enc_done: |
| 2106 | ${UCMP}i $ivp,0 |
| 2107 | beq Lxts_enc_ret |
| 2108 | |
| 2109 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2110 | vaddubm $tweak,$tweak,$tweak |
| 2111 | vsldoi $tmp,$tmp,$tmp,15 |
| 2112 | vand $tmp,$tmp,$eighty7 |
| 2113 | vxor $tweak,$tweak,$tmp |
| 2114 | |
| 2115 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 2116 | stvx_u $tweak,0,$ivp |
| 2117 | |
| 2118 | Lxts_enc_ret: |
| 2119 | mtspr 256,r12 # restore vrsave |
| 2120 | li r3,0 |
| 2121 | blr |
| 2122 | .long 0 |
| 2123 | .byte 0,12,0x04,0,0x80,6,6,0 |
| 2124 | .long 0 |
| 2125 | .size .${prefix}_xts_encrypt,.-.${prefix}_xts_encrypt |
| 2126 | |
| 2127 | .globl .${prefix}_xts_decrypt |
| 2128 | .align 5 |
| 2129 | .${prefix}_xts_decrypt: |
| 2130 | mr $inp,r3 # reassign |
| 2131 | li r3,-1 |
| 2132 | ${UCMP}i $len,16 |
| 2133 | bltlr- |
| 2134 | |
| 2135 | lis r0,0xfff8 |
| 2136 | mfspr r12,256 # save vrsave |
| 2137 | li r11,0 |
| 2138 | mtspr 256,r0 |
| 2139 | |
| 2140 | andi. r0,$len,15 |
| 2141 | neg r0,r0 |
| 2142 | andi. r0,r0,16 |
| 2143 | sub $len,$len,r0 |
| 2144 | |
| 2145 | vspltisb $seven,0x07 # 0x070707..07 |
| 2146 | le?lvsl $leperm,r11,r11 |
| 2147 | le?vspltisb $tmp,0x0f |
| 2148 | le?vxor $leperm,$leperm,$seven |
| 2149 | |
| 2150 | li $idx,15 |
| 2151 | lvx $tweak,0,$ivp # load [unaligned] iv |
| 2152 | lvsl $inpperm,0,$ivp |
| 2153 | lvx $inptail,$idx,$ivp |
| 2154 | le?vxor $inpperm,$inpperm,$tmp |
| 2155 | vperm $tweak,$tweak,$inptail,$inpperm |
| 2156 | |
| 2157 | neg r11,$inp |
| 2158 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 2159 | lvx $inout,0,$inp |
| 2160 | addi $inp,$inp,15 # 15 is not typo |
| 2161 | le?vxor $inpperm,$inpperm,$tmp |
| 2162 | |
| 2163 | ${UCMP}i $key2,0 # key2==NULL? |
| 2164 | beq Lxts_dec_no_key2 |
| 2165 | |
| 2166 | ?lvsl $keyperm,0,$key2 # prepare for unaligned key |
| 2167 | lwz $rounds,240($key2) |
| 2168 | srwi $rounds,$rounds,1 |
| 2169 | subi $rounds,$rounds,1 |
| 2170 | li $idx,16 |
| 2171 | |
| 2172 | lvx $rndkey0,0,$key2 |
| 2173 | lvx $rndkey1,$idx,$key2 |
| 2174 | addi $idx,$idx,16 |
| 2175 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2176 | vxor $tweak,$tweak,$rndkey0 |
| 2177 | lvx $rndkey0,$idx,$key2 |
| 2178 | addi $idx,$idx,16 |
| 2179 | mtctr $rounds |
| 2180 | |
| 2181 | Ltweak_xts_dec: |
| 2182 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2183 | vcipher $tweak,$tweak,$rndkey1 |
| 2184 | lvx $rndkey1,$idx,$key2 |
| 2185 | addi $idx,$idx,16 |
| 2186 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2187 | vcipher $tweak,$tweak,$rndkey0 |
| 2188 | lvx $rndkey0,$idx,$key2 |
| 2189 | addi $idx,$idx,16 |
| 2190 | bdnz Ltweak_xts_dec |
| 2191 | |
| 2192 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2193 | vcipher $tweak,$tweak,$rndkey1 |
| 2194 | lvx $rndkey1,$idx,$key2 |
| 2195 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2196 | vcipherlast $tweak,$tweak,$rndkey0 |
| 2197 | |
| 2198 | li $ivp,0 # don't chain the tweak |
| 2199 | b Lxts_dec |
| 2200 | |
| 2201 | Lxts_dec_no_key2: |
| 2202 | neg $idx,$len |
| 2203 | andi. $idx,$idx,15 |
| 2204 | add $len,$len,$idx # in "tweak chaining" |
| 2205 | # mode only complete |
| 2206 | # blocks are processed |
| 2207 | Lxts_dec: |
| 2208 | lvx $inptail,0,$inp |
| 2209 | addi $inp,$inp,16 |
| 2210 | |
| 2211 | ?lvsl $keyperm,0,$key1 # prepare for unaligned key |
| 2212 | lwz $rounds,240($key1) |
| 2213 | srwi $rounds,$rounds,1 |
| 2214 | subi $rounds,$rounds,1 |
| 2215 | li $idx,16 |
| 2216 | |
| 2217 | vslb $eighty7,$seven,$seven # 0x808080..80 |
| 2218 | vor $eighty7,$eighty7,$seven # 0x878787..87 |
| 2219 | vspltisb $tmp,1 # 0x010101..01 |
| 2220 | vsldoi $eighty7,$eighty7,$tmp,15 # 0x870101..01 |
| 2221 | |
| 2222 | ${UCMP}i $len,96 |
| 2223 | bge _aesp8_xts_decrypt6x |
| 2224 | |
| 2225 | lvx $rndkey0,0,$key1 |
| 2226 | lvx $rndkey1,$idx,$key1 |
| 2227 | addi $idx,$idx,16 |
| 2228 | vperm $inout,$inout,$inptail,$inpperm |
| 2229 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2230 | vxor $inout,$inout,$tweak |
| 2231 | vxor $inout,$inout,$rndkey0 |
| 2232 | lvx $rndkey0,$idx,$key1 |
| 2233 | addi $idx,$idx,16 |
| 2234 | mtctr $rounds |
| 2235 | |
| 2236 | ${UCMP}i $len,16 |
| 2237 | blt Ltail_xts_dec |
| 2238 | be?b Loop_xts_dec |
| 2239 | |
| 2240 | .align 5 |
| 2241 | Loop_xts_dec: |
| 2242 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2243 | vncipher $inout,$inout,$rndkey1 |
| 2244 | lvx $rndkey1,$idx,$key1 |
| 2245 | addi $idx,$idx,16 |
| 2246 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2247 | vncipher $inout,$inout,$rndkey0 |
| 2248 | lvx $rndkey0,$idx,$key1 |
| 2249 | addi $idx,$idx,16 |
| 2250 | bdnz Loop_xts_dec |
| 2251 | |
| 2252 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2253 | vncipher $inout,$inout,$rndkey1 |
| 2254 | lvx $rndkey1,$idx,$key1 |
| 2255 | li $idx,16 |
| 2256 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2257 | vxor $rndkey0,$rndkey0,$tweak |
| 2258 | vncipherlast $output,$inout,$rndkey0 |
| 2259 | |
| 2260 | le?vperm $tmp,$output,$output,$leperm |
| 2261 | be?nop |
| 2262 | le?stvx_u $tmp,0,$out |
| 2263 | be?stvx_u $output,0,$out |
| 2264 | addi $out,$out,16 |
| 2265 | |
| 2266 | subic. $len,$len,16 |
| 2267 | beq Lxts_dec_done |
| 2268 | |
| 2269 | vmr $inout,$inptail |
| 2270 | lvx $inptail,0,$inp |
| 2271 | addi $inp,$inp,16 |
| 2272 | lvx $rndkey0,0,$key1 |
| 2273 | lvx $rndkey1,$idx,$key1 |
| 2274 | addi $idx,$idx,16 |
| 2275 | |
| 2276 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2277 | vaddubm $tweak,$tweak,$tweak |
| 2278 | vsldoi $tmp,$tmp,$tmp,15 |
| 2279 | vand $tmp,$tmp,$eighty7 |
| 2280 | vxor $tweak,$tweak,$tmp |
| 2281 | |
| 2282 | vperm $inout,$inout,$inptail,$inpperm |
| 2283 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2284 | vxor $inout,$inout,$tweak |
| 2285 | vxor $inout,$inout,$rndkey0 |
| 2286 | lvx $rndkey0,$idx,$key1 |
| 2287 | addi $idx,$idx,16 |
| 2288 | |
| 2289 | mtctr $rounds |
| 2290 | ${UCMP}i $len,16 |
| 2291 | bge Loop_xts_dec |
| 2292 | |
| 2293 | Ltail_xts_dec: |
| 2294 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2295 | vaddubm $tweak1,$tweak,$tweak |
| 2296 | vsldoi $tmp,$tmp,$tmp,15 |
| 2297 | vand $tmp,$tmp,$eighty7 |
| 2298 | vxor $tweak1,$tweak1,$tmp |
| 2299 | |
| 2300 | subi $inp,$inp,16 |
| 2301 | add $inp,$inp,$len |
| 2302 | |
| 2303 | vxor $inout,$inout,$tweak # :-( |
| 2304 | vxor $inout,$inout,$tweak1 # :-) |
| 2305 | |
| 2306 | Loop_xts_dec_short: |
| 2307 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2308 | vncipher $inout,$inout,$rndkey1 |
| 2309 | lvx $rndkey1,$idx,$key1 |
| 2310 | addi $idx,$idx,16 |
| 2311 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2312 | vncipher $inout,$inout,$rndkey0 |
| 2313 | lvx $rndkey0,$idx,$key1 |
| 2314 | addi $idx,$idx,16 |
| 2315 | bdnz Loop_xts_dec_short |
| 2316 | |
| 2317 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2318 | vncipher $inout,$inout,$rndkey1 |
| 2319 | lvx $rndkey1,$idx,$key1 |
| 2320 | li $idx,16 |
| 2321 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2322 | vxor $rndkey0,$rndkey0,$tweak1 |
| 2323 | vncipherlast $output,$inout,$rndkey0 |
| 2324 | |
| 2325 | le?vperm $tmp,$output,$output,$leperm |
| 2326 | be?nop |
| 2327 | le?stvx_u $tmp,0,$out |
| 2328 | be?stvx_u $output,0,$out |
| 2329 | |
| 2330 | vmr $inout,$inptail |
| 2331 | lvx $inptail,0,$inp |
| 2332 | #addi $inp,$inp,16 |
| 2333 | lvx $rndkey0,0,$key1 |
| 2334 | lvx $rndkey1,$idx,$key1 |
| 2335 | addi $idx,$idx,16 |
| 2336 | vperm $inout,$inout,$inptail,$inpperm |
| 2337 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2338 | |
| 2339 | lvsr $inpperm,0,$len # $inpperm is no longer needed |
| 2340 | vxor $inptail,$inptail,$inptail # $inptail is no longer needed |
| 2341 | vspltisb $tmp,-1 |
| 2342 | vperm $inptail,$inptail,$tmp,$inpperm |
| 2343 | vsel $inout,$inout,$output,$inptail |
| 2344 | |
| 2345 | vxor $rndkey0,$rndkey0,$tweak |
| 2346 | vxor $inout,$inout,$rndkey0 |
| 2347 | lvx $rndkey0,$idx,$key1 |
| 2348 | addi $idx,$idx,16 |
| 2349 | |
| 2350 | subi r11,$out,1 |
| 2351 | mtctr $len |
| 2352 | li $len,16 |
| 2353 | Loop_xts_dec_steal: |
| 2354 | lbzu r0,1(r11) |
| 2355 | stb r0,16(r11) |
| 2356 | bdnz Loop_xts_dec_steal |
| 2357 | |
| 2358 | mtctr $rounds |
| 2359 | b Loop_xts_dec # one more time... |
| 2360 | |
| 2361 | Lxts_dec_done: |
| 2362 | ${UCMP}i $ivp,0 |
| 2363 | beq Lxts_dec_ret |
| 2364 | |
| 2365 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2366 | vaddubm $tweak,$tweak,$tweak |
| 2367 | vsldoi $tmp,$tmp,$tmp,15 |
| 2368 | vand $tmp,$tmp,$eighty7 |
| 2369 | vxor $tweak,$tweak,$tmp |
| 2370 | |
| 2371 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 2372 | stvx_u $tweak,0,$ivp |
| 2373 | |
| 2374 | Lxts_dec_ret: |
| 2375 | mtspr 256,r12 # restore vrsave |
| 2376 | li r3,0 |
| 2377 | blr |
| 2378 | .long 0 |
| 2379 | .byte 0,12,0x04,0,0x80,6,6,0 |
| 2380 | .long 0 |
| 2381 | .size .${prefix}_xts_decrypt,.-.${prefix}_xts_decrypt |
| 2382 | ___ |
| 2383 | ######################################################################### |
| 2384 | {{ # Optimized XTS procedures # |
| 2385 | my $key_=$key2; |
| 2386 | my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,3,26..31)); |
| 2387 | $x00=0 if ($flavour =~ /osx/); |
| 2388 | my ($in0, $in1, $in2, $in3, $in4, $in5 )=map("v$_",(0..5)); |
| 2389 | my ($out0, $out1, $out2, $out3, $out4, $out5)=map("v$_",(7,12..16)); |
| 2390 | my ($twk0, $twk1, $twk2, $twk3, $twk4, $twk5)=map("v$_",(17..22)); |
| 2391 | my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys |
| 2392 | # v26-v31 last 6 round keys |
| 2393 | my ($keyperm)=($out0); # aliases with "caller", redundant assignment |
| 2394 | my $taillen=$x70; |
| 2395 | |
| 2396 | $code.=<<___; |
| 2397 | .align 5 |
| 2398 | _aesp8_xts_encrypt6x: |
| 2399 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 2400 | mflr r11 |
| 2401 | li r7,`$FRAME+8*16+15` |
| 2402 | li r3,`$FRAME+8*16+31` |
| 2403 | $PUSH r11,`$FRAME+21*16+6*$SIZE_T+$LRSAVE`($sp) |
| 2404 | stvx v20,r7,$sp # ABI says so |
| 2405 | addi r7,r7,32 |
| 2406 | stvx v21,r3,$sp |
| 2407 | addi r3,r3,32 |
| 2408 | stvx v22,r7,$sp |
| 2409 | addi r7,r7,32 |
| 2410 | stvx v23,r3,$sp |
| 2411 | addi r3,r3,32 |
| 2412 | stvx v24,r7,$sp |
| 2413 | addi r7,r7,32 |
| 2414 | stvx v25,r3,$sp |
| 2415 | addi r3,r3,32 |
| 2416 | stvx v26,r7,$sp |
| 2417 | addi r7,r7,32 |
| 2418 | stvx v27,r3,$sp |
| 2419 | addi r3,r3,32 |
| 2420 | stvx v28,r7,$sp |
| 2421 | addi r7,r7,32 |
| 2422 | stvx v29,r3,$sp |
| 2423 | addi r3,r3,32 |
| 2424 | stvx v30,r7,$sp |
| 2425 | stvx v31,r3,$sp |
| 2426 | li r0,-1 |
| 2427 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 2428 | li $x10,0x10 |
| 2429 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 2430 | li $x20,0x20 |
| 2431 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 2432 | li $x30,0x30 |
| 2433 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 2434 | li $x40,0x40 |
| 2435 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 2436 | li $x50,0x50 |
| 2437 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 2438 | li $x60,0x60 |
| 2439 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 2440 | li $x70,0x70 |
| 2441 | mtspr 256,r0 |
| 2442 | |
| 2443 | subi $rounds,$rounds,3 # -4 in total |
| 2444 | |
| 2445 | lvx $rndkey0,$x00,$key1 # load key schedule |
| 2446 | lvx v30,$x10,$key1 |
| 2447 | addi $key1,$key1,0x20 |
| 2448 | lvx v31,$x00,$key1 |
| 2449 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
| 2450 | addi $key_,$sp,$FRAME+15 |
| 2451 | mtctr $rounds |
| 2452 | |
| 2453 | Load_xts_enc_key: |
| 2454 | ?vperm v24,v30,v31,$keyperm |
| 2455 | lvx v30,$x10,$key1 |
| 2456 | addi $key1,$key1,0x20 |
| 2457 | stvx v24,$x00,$key_ # off-load round[1] |
| 2458 | ?vperm v25,v31,v30,$keyperm |
| 2459 | lvx v31,$x00,$key1 |
| 2460 | stvx v25,$x10,$key_ # off-load round[2] |
| 2461 | addi $key_,$key_,0x20 |
| 2462 | bdnz Load_xts_enc_key |
| 2463 | |
| 2464 | lvx v26,$x10,$key1 |
| 2465 | ?vperm v24,v30,v31,$keyperm |
| 2466 | lvx v27,$x20,$key1 |
| 2467 | stvx v24,$x00,$key_ # off-load round[3] |
| 2468 | ?vperm v25,v31,v26,$keyperm |
| 2469 | lvx v28,$x30,$key1 |
| 2470 | stvx v25,$x10,$key_ # off-load round[4] |
| 2471 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 2472 | ?vperm v26,v26,v27,$keyperm |
| 2473 | lvx v29,$x40,$key1 |
| 2474 | ?vperm v27,v27,v28,$keyperm |
| 2475 | lvx v30,$x50,$key1 |
| 2476 | ?vperm v28,v28,v29,$keyperm |
| 2477 | lvx v31,$x60,$key1 |
| 2478 | ?vperm v29,v29,v30,$keyperm |
| 2479 | lvx $twk5,$x70,$key1 # borrow $twk5 |
| 2480 | ?vperm v30,v30,v31,$keyperm |
| 2481 | lvx v24,$x00,$key_ # pre-load round[1] |
| 2482 | ?vperm v31,v31,$twk5,$keyperm |
| 2483 | lvx v25,$x10,$key_ # pre-load round[2] |
| 2484 | |
| 2485 | vperm $in0,$inout,$inptail,$inpperm |
| 2486 | subi $inp,$inp,31 # undo "caller" |
| 2487 | vxor $twk0,$tweak,$rndkey0 |
| 2488 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2489 | vaddubm $tweak,$tweak,$tweak |
| 2490 | vsldoi $tmp,$tmp,$tmp,15 |
| 2491 | vand $tmp,$tmp,$eighty7 |
| 2492 | vxor $out0,$in0,$twk0 |
| 2493 | vxor $tweak,$tweak,$tmp |
| 2494 | |
| 2495 | lvx_u $in1,$x10,$inp |
| 2496 | vxor $twk1,$tweak,$rndkey0 |
| 2497 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2498 | vaddubm $tweak,$tweak,$tweak |
| 2499 | vsldoi $tmp,$tmp,$tmp,15 |
| 2500 | le?vperm $in1,$in1,$in1,$leperm |
| 2501 | vand $tmp,$tmp,$eighty7 |
| 2502 | vxor $out1,$in1,$twk1 |
| 2503 | vxor $tweak,$tweak,$tmp |
| 2504 | |
| 2505 | lvx_u $in2,$x20,$inp |
| 2506 | andi. $taillen,$len,15 |
| 2507 | vxor $twk2,$tweak,$rndkey0 |
| 2508 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2509 | vaddubm $tweak,$tweak,$tweak |
| 2510 | vsldoi $tmp,$tmp,$tmp,15 |
| 2511 | le?vperm $in2,$in2,$in2,$leperm |
| 2512 | vand $tmp,$tmp,$eighty7 |
| 2513 | vxor $out2,$in2,$twk2 |
| 2514 | vxor $tweak,$tweak,$tmp |
| 2515 | |
| 2516 | lvx_u $in3,$x30,$inp |
| 2517 | sub $len,$len,$taillen |
| 2518 | vxor $twk3,$tweak,$rndkey0 |
| 2519 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2520 | vaddubm $tweak,$tweak,$tweak |
| 2521 | vsldoi $tmp,$tmp,$tmp,15 |
| 2522 | le?vperm $in3,$in3,$in3,$leperm |
| 2523 | vand $tmp,$tmp,$eighty7 |
| 2524 | vxor $out3,$in3,$twk3 |
| 2525 | vxor $tweak,$tweak,$tmp |
| 2526 | |
| 2527 | lvx_u $in4,$x40,$inp |
| 2528 | subi $len,$len,0x60 |
| 2529 | vxor $twk4,$tweak,$rndkey0 |
| 2530 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2531 | vaddubm $tweak,$tweak,$tweak |
| 2532 | vsldoi $tmp,$tmp,$tmp,15 |
| 2533 | le?vperm $in4,$in4,$in4,$leperm |
| 2534 | vand $tmp,$tmp,$eighty7 |
| 2535 | vxor $out4,$in4,$twk4 |
| 2536 | vxor $tweak,$tweak,$tmp |
| 2537 | |
| 2538 | lvx_u $in5,$x50,$inp |
| 2539 | addi $inp,$inp,0x60 |
| 2540 | vxor $twk5,$tweak,$rndkey0 |
| 2541 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2542 | vaddubm $tweak,$tweak,$tweak |
| 2543 | vsldoi $tmp,$tmp,$tmp,15 |
| 2544 | le?vperm $in5,$in5,$in5,$leperm |
| 2545 | vand $tmp,$tmp,$eighty7 |
| 2546 | vxor $out5,$in5,$twk5 |
| 2547 | vxor $tweak,$tweak,$tmp |
| 2548 | |
| 2549 | vxor v31,v31,$rndkey0 |
| 2550 | mtctr $rounds |
| 2551 | b Loop_xts_enc6x |
| 2552 | |
| 2553 | .align 5 |
| 2554 | Loop_xts_enc6x: |
| 2555 | vcipher $out0,$out0,v24 |
| 2556 | vcipher $out1,$out1,v24 |
| 2557 | vcipher $out2,$out2,v24 |
| 2558 | vcipher $out3,$out3,v24 |
| 2559 | vcipher $out4,$out4,v24 |
| 2560 | vcipher $out5,$out5,v24 |
| 2561 | lvx v24,$x20,$key_ # round[3] |
| 2562 | addi $key_,$key_,0x20 |
| 2563 | |
| 2564 | vcipher $out0,$out0,v25 |
| 2565 | vcipher $out1,$out1,v25 |
| 2566 | vcipher $out2,$out2,v25 |
| 2567 | vcipher $out3,$out3,v25 |
| 2568 | vcipher $out4,$out4,v25 |
| 2569 | vcipher $out5,$out5,v25 |
| 2570 | lvx v25,$x10,$key_ # round[4] |
| 2571 | bdnz Loop_xts_enc6x |
| 2572 | |
| 2573 | subic $len,$len,96 # $len-=96 |
| 2574 | vxor $in0,$twk0,v31 # xor with last round key |
| 2575 | vcipher $out0,$out0,v24 |
| 2576 | vcipher $out1,$out1,v24 |
| 2577 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2578 | vxor $twk0,$tweak,$rndkey0 |
| 2579 | vaddubm $tweak,$tweak,$tweak |
| 2580 | vcipher $out2,$out2,v24 |
| 2581 | vcipher $out3,$out3,v24 |
| 2582 | vsldoi $tmp,$tmp,$tmp,15 |
| 2583 | vcipher $out4,$out4,v24 |
| 2584 | vcipher $out5,$out5,v24 |
| 2585 | |
| 2586 | subfe. r0,r0,r0 # borrow?-1:0 |
| 2587 | vand $tmp,$tmp,$eighty7 |
| 2588 | vcipher $out0,$out0,v25 |
| 2589 | vcipher $out1,$out1,v25 |
| 2590 | vxor $tweak,$tweak,$tmp |
| 2591 | vcipher $out2,$out2,v25 |
| 2592 | vcipher $out3,$out3,v25 |
| 2593 | vxor $in1,$twk1,v31 |
| 2594 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2595 | vxor $twk1,$tweak,$rndkey0 |
| 2596 | vcipher $out4,$out4,v25 |
| 2597 | vcipher $out5,$out5,v25 |
| 2598 | |
| 2599 | and r0,r0,$len |
| 2600 | vaddubm $tweak,$tweak,$tweak |
| 2601 | vsldoi $tmp,$tmp,$tmp,15 |
| 2602 | vcipher $out0,$out0,v26 |
| 2603 | vcipher $out1,$out1,v26 |
| 2604 | vand $tmp,$tmp,$eighty7 |
| 2605 | vcipher $out2,$out2,v26 |
| 2606 | vcipher $out3,$out3,v26 |
| 2607 | vxor $tweak,$tweak,$tmp |
| 2608 | vcipher $out4,$out4,v26 |
| 2609 | vcipher $out5,$out5,v26 |
| 2610 | |
| 2611 | add $inp,$inp,r0 # $inp is adjusted in such |
| 2612 | # way that at exit from the |
| 2613 | # loop inX-in5 are loaded |
| 2614 | # with last "words" |
| 2615 | vxor $in2,$twk2,v31 |
| 2616 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2617 | vxor $twk2,$tweak,$rndkey0 |
| 2618 | vaddubm $tweak,$tweak,$tweak |
| 2619 | vcipher $out0,$out0,v27 |
| 2620 | vcipher $out1,$out1,v27 |
| 2621 | vsldoi $tmp,$tmp,$tmp,15 |
| 2622 | vcipher $out2,$out2,v27 |
| 2623 | vcipher $out3,$out3,v27 |
| 2624 | vand $tmp,$tmp,$eighty7 |
| 2625 | vcipher $out4,$out4,v27 |
| 2626 | vcipher $out5,$out5,v27 |
| 2627 | |
| 2628 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 2629 | vxor $tweak,$tweak,$tmp |
| 2630 | vcipher $out0,$out0,v28 |
| 2631 | vcipher $out1,$out1,v28 |
| 2632 | vxor $in3,$twk3,v31 |
| 2633 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2634 | vxor $twk3,$tweak,$rndkey0 |
| 2635 | vcipher $out2,$out2,v28 |
| 2636 | vcipher $out3,$out3,v28 |
| 2637 | vaddubm $tweak,$tweak,$tweak |
| 2638 | vsldoi $tmp,$tmp,$tmp,15 |
| 2639 | vcipher $out4,$out4,v28 |
| 2640 | vcipher $out5,$out5,v28 |
| 2641 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 2642 | vand $tmp,$tmp,$eighty7 |
| 2643 | |
| 2644 | vcipher $out0,$out0,v29 |
| 2645 | vcipher $out1,$out1,v29 |
| 2646 | vxor $tweak,$tweak,$tmp |
| 2647 | vcipher $out2,$out2,v29 |
| 2648 | vcipher $out3,$out3,v29 |
| 2649 | vxor $in4,$twk4,v31 |
| 2650 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2651 | vxor $twk4,$tweak,$rndkey0 |
| 2652 | vcipher $out4,$out4,v29 |
| 2653 | vcipher $out5,$out5,v29 |
| 2654 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 2655 | vaddubm $tweak,$tweak,$tweak |
| 2656 | vsldoi $tmp,$tmp,$tmp,15 |
| 2657 | |
| 2658 | vcipher $out0,$out0,v30 |
| 2659 | vcipher $out1,$out1,v30 |
| 2660 | vand $tmp,$tmp,$eighty7 |
| 2661 | vcipher $out2,$out2,v30 |
| 2662 | vcipher $out3,$out3,v30 |
| 2663 | vxor $tweak,$tweak,$tmp |
| 2664 | vcipher $out4,$out4,v30 |
| 2665 | vcipher $out5,$out5,v30 |
| 2666 | vxor $in5,$twk5,v31 |
| 2667 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2668 | vxor $twk5,$tweak,$rndkey0 |
| 2669 | |
| 2670 | vcipherlast $out0,$out0,$in0 |
| 2671 | lvx_u $in0,$x00,$inp # load next input block |
| 2672 | vaddubm $tweak,$tweak,$tweak |
| 2673 | vsldoi $tmp,$tmp,$tmp,15 |
| 2674 | vcipherlast $out1,$out1,$in1 |
| 2675 | lvx_u $in1,$x10,$inp |
| 2676 | vcipherlast $out2,$out2,$in2 |
| 2677 | le?vperm $in0,$in0,$in0,$leperm |
| 2678 | lvx_u $in2,$x20,$inp |
| 2679 | vand $tmp,$tmp,$eighty7 |
| 2680 | vcipherlast $out3,$out3,$in3 |
| 2681 | le?vperm $in1,$in1,$in1,$leperm |
| 2682 | lvx_u $in3,$x30,$inp |
| 2683 | vcipherlast $out4,$out4,$in4 |
| 2684 | le?vperm $in2,$in2,$in2,$leperm |
| 2685 | lvx_u $in4,$x40,$inp |
| 2686 | vxor $tweak,$tweak,$tmp |
| 2687 | vcipherlast $tmp,$out5,$in5 # last block might be needed |
| 2688 | # in stealing mode |
| 2689 | le?vperm $in3,$in3,$in3,$leperm |
| 2690 | lvx_u $in5,$x50,$inp |
| 2691 | addi $inp,$inp,0x60 |
| 2692 | le?vperm $in4,$in4,$in4,$leperm |
| 2693 | le?vperm $in5,$in5,$in5,$leperm |
| 2694 | |
| 2695 | le?vperm $out0,$out0,$out0,$leperm |
| 2696 | le?vperm $out1,$out1,$out1,$leperm |
| 2697 | stvx_u $out0,$x00,$out # store output |
| 2698 | vxor $out0,$in0,$twk0 |
| 2699 | le?vperm $out2,$out2,$out2,$leperm |
| 2700 | stvx_u $out1,$x10,$out |
| 2701 | vxor $out1,$in1,$twk1 |
| 2702 | le?vperm $out3,$out3,$out3,$leperm |
| 2703 | stvx_u $out2,$x20,$out |
| 2704 | vxor $out2,$in2,$twk2 |
| 2705 | le?vperm $out4,$out4,$out4,$leperm |
| 2706 | stvx_u $out3,$x30,$out |
| 2707 | vxor $out3,$in3,$twk3 |
| 2708 | le?vperm $out5,$tmp,$tmp,$leperm |
| 2709 | stvx_u $out4,$x40,$out |
| 2710 | vxor $out4,$in4,$twk4 |
| 2711 | le?stvx_u $out5,$x50,$out |
| 2712 | be?stvx_u $tmp, $x50,$out |
| 2713 | vxor $out5,$in5,$twk5 |
| 2714 | addi $out,$out,0x60 |
| 2715 | |
| 2716 | mtctr $rounds |
| 2717 | beq Loop_xts_enc6x # did $len-=96 borrow? |
| 2718 | |
| 2719 | addic. $len,$len,0x60 |
| 2720 | beq Lxts_enc6x_zero |
| 2721 | cmpwi $len,0x20 |
| 2722 | blt Lxts_enc6x_one |
| 2723 | nop |
| 2724 | beq Lxts_enc6x_two |
| 2725 | cmpwi $len,0x40 |
| 2726 | blt Lxts_enc6x_three |
| 2727 | nop |
| 2728 | beq Lxts_enc6x_four |
| 2729 | |
| 2730 | Lxts_enc6x_five: |
| 2731 | vxor $out0,$in1,$twk0 |
| 2732 | vxor $out1,$in2,$twk1 |
| 2733 | vxor $out2,$in3,$twk2 |
| 2734 | vxor $out3,$in4,$twk3 |
| 2735 | vxor $out4,$in5,$twk4 |
| 2736 | |
| 2737 | bl _aesp8_xts_enc5x |
| 2738 | |
| 2739 | le?vperm $out0,$out0,$out0,$leperm |
| 2740 | vmr $twk0,$twk5 # unused tweak |
| 2741 | le?vperm $out1,$out1,$out1,$leperm |
| 2742 | stvx_u $out0,$x00,$out # store output |
| 2743 | le?vperm $out2,$out2,$out2,$leperm |
| 2744 | stvx_u $out1,$x10,$out |
| 2745 | le?vperm $out3,$out3,$out3,$leperm |
| 2746 | stvx_u $out2,$x20,$out |
| 2747 | vxor $tmp,$out4,$twk5 # last block prep for stealing |
| 2748 | le?vperm $out4,$out4,$out4,$leperm |
| 2749 | stvx_u $out3,$x30,$out |
| 2750 | stvx_u $out4,$x40,$out |
| 2751 | addi $out,$out,0x50 |
| 2752 | bne Lxts_enc6x_steal |
| 2753 | b Lxts_enc6x_done |
| 2754 | |
| 2755 | .align 4 |
| 2756 | Lxts_enc6x_four: |
| 2757 | vxor $out0,$in2,$twk0 |
| 2758 | vxor $out1,$in3,$twk1 |
| 2759 | vxor $out2,$in4,$twk2 |
| 2760 | vxor $out3,$in5,$twk3 |
| 2761 | vxor $out4,$out4,$out4 |
| 2762 | |
| 2763 | bl _aesp8_xts_enc5x |
| 2764 | |
| 2765 | le?vperm $out0,$out0,$out0,$leperm |
| 2766 | vmr $twk0,$twk4 # unused tweak |
| 2767 | le?vperm $out1,$out1,$out1,$leperm |
| 2768 | stvx_u $out0,$x00,$out # store output |
| 2769 | le?vperm $out2,$out2,$out2,$leperm |
| 2770 | stvx_u $out1,$x10,$out |
| 2771 | vxor $tmp,$out3,$twk4 # last block prep for stealing |
| 2772 | le?vperm $out3,$out3,$out3,$leperm |
| 2773 | stvx_u $out2,$x20,$out |
| 2774 | stvx_u $out3,$x30,$out |
| 2775 | addi $out,$out,0x40 |
| 2776 | bne Lxts_enc6x_steal |
| 2777 | b Lxts_enc6x_done |
| 2778 | |
| 2779 | .align 4 |
| 2780 | Lxts_enc6x_three: |
| 2781 | vxor $out0,$in3,$twk0 |
| 2782 | vxor $out1,$in4,$twk1 |
| 2783 | vxor $out2,$in5,$twk2 |
| 2784 | vxor $out3,$out3,$out3 |
| 2785 | vxor $out4,$out4,$out4 |
| 2786 | |
| 2787 | bl _aesp8_xts_enc5x |
| 2788 | |
| 2789 | le?vperm $out0,$out0,$out0,$leperm |
| 2790 | vmr $twk0,$twk3 # unused tweak |
| 2791 | le?vperm $out1,$out1,$out1,$leperm |
| 2792 | stvx_u $out0,$x00,$out # store output |
| 2793 | vxor $tmp,$out2,$twk3 # last block prep for stealing |
| 2794 | le?vperm $out2,$out2,$out2,$leperm |
| 2795 | stvx_u $out1,$x10,$out |
| 2796 | stvx_u $out2,$x20,$out |
| 2797 | addi $out,$out,0x30 |
| 2798 | bne Lxts_enc6x_steal |
| 2799 | b Lxts_enc6x_done |
| 2800 | |
| 2801 | .align 4 |
| 2802 | Lxts_enc6x_two: |
| 2803 | vxor $out0,$in4,$twk0 |
| 2804 | vxor $out1,$in5,$twk1 |
| 2805 | vxor $out2,$out2,$out2 |
| 2806 | vxor $out3,$out3,$out3 |
| 2807 | vxor $out4,$out4,$out4 |
| 2808 | |
| 2809 | bl _aesp8_xts_enc5x |
| 2810 | |
| 2811 | le?vperm $out0,$out0,$out0,$leperm |
| 2812 | vmr $twk0,$twk2 # unused tweak |
| 2813 | vxor $tmp,$out1,$twk2 # last block prep for stealing |
| 2814 | le?vperm $out1,$out1,$out1,$leperm |
| 2815 | stvx_u $out0,$x00,$out # store output |
| 2816 | stvx_u $out1,$x10,$out |
| 2817 | addi $out,$out,0x20 |
| 2818 | bne Lxts_enc6x_steal |
| 2819 | b Lxts_enc6x_done |
| 2820 | |
| 2821 | .align 4 |
| 2822 | Lxts_enc6x_one: |
| 2823 | vxor $out0,$in5,$twk0 |
| 2824 | nop |
| 2825 | Loop_xts_enc1x: |
| 2826 | vcipher $out0,$out0,v24 |
| 2827 | lvx v24,$x20,$key_ # round[3] |
| 2828 | addi $key_,$key_,0x20 |
| 2829 | |
| 2830 | vcipher $out0,$out0,v25 |
| 2831 | lvx v25,$x10,$key_ # round[4] |
| 2832 | bdnz Loop_xts_enc1x |
| 2833 | |
| 2834 | add $inp,$inp,$taillen |
| 2835 | cmpwi $taillen,0 |
| 2836 | vcipher $out0,$out0,v24 |
| 2837 | |
| 2838 | subi $inp,$inp,16 |
| 2839 | vcipher $out0,$out0,v25 |
| 2840 | |
| 2841 | lvsr $inpperm,0,$taillen |
| 2842 | vcipher $out0,$out0,v26 |
| 2843 | |
| 2844 | lvx_u $in0,0,$inp |
| 2845 | vcipher $out0,$out0,v27 |
| 2846 | |
| 2847 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 2848 | vcipher $out0,$out0,v28 |
| 2849 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 2850 | |
| 2851 | vcipher $out0,$out0,v29 |
| 2852 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 2853 | vxor $twk0,$twk0,v31 |
| 2854 | |
| 2855 | le?vperm $in0,$in0,$in0,$leperm |
| 2856 | vcipher $out0,$out0,v30 |
| 2857 | |
| 2858 | vperm $in0,$in0,$in0,$inpperm |
| 2859 | vcipherlast $out0,$out0,$twk0 |
| 2860 | |
| 2861 | vmr $twk0,$twk1 # unused tweak |
| 2862 | vxor $tmp,$out0,$twk1 # last block prep for stealing |
| 2863 | le?vperm $out0,$out0,$out0,$leperm |
| 2864 | stvx_u $out0,$x00,$out # store output |
| 2865 | addi $out,$out,0x10 |
| 2866 | bne Lxts_enc6x_steal |
| 2867 | b Lxts_enc6x_done |
| 2868 | |
| 2869 | .align 4 |
| 2870 | Lxts_enc6x_zero: |
| 2871 | cmpwi $taillen,0 |
| 2872 | beq Lxts_enc6x_done |
| 2873 | |
| 2874 | add $inp,$inp,$taillen |
| 2875 | subi $inp,$inp,16 |
| 2876 | lvx_u $in0,0,$inp |
| 2877 | lvsr $inpperm,0,$taillen # $in5 is no more |
| 2878 | le?vperm $in0,$in0,$in0,$leperm |
| 2879 | vperm $in0,$in0,$in0,$inpperm |
| 2880 | vxor $tmp,$tmp,$twk0 |
| 2881 | Lxts_enc6x_steal: |
| 2882 | vxor $in0,$in0,$twk0 |
| 2883 | vxor $out0,$out0,$out0 |
| 2884 | vspltisb $out1,-1 |
| 2885 | vperm $out0,$out0,$out1,$inpperm |
| 2886 | vsel $out0,$in0,$tmp,$out0 # $tmp is last block, remember? |
| 2887 | |
| 2888 | subi r30,$out,17 |
| 2889 | subi $out,$out,16 |
| 2890 | mtctr $taillen |
| 2891 | Loop_xts_enc6x_steal: |
| 2892 | lbzu r0,1(r30) |
| 2893 | stb r0,16(r30) |
| 2894 | bdnz Loop_xts_enc6x_steal |
| 2895 | |
| 2896 | li $taillen,0 |
| 2897 | mtctr $rounds |
| 2898 | b Loop_xts_enc1x # one more time... |
| 2899 | |
| 2900 | .align 4 |
| 2901 | Lxts_enc6x_done: |
| 2902 | ${UCMP}i $ivp,0 |
| 2903 | beq Lxts_enc6x_ret |
| 2904 | |
| 2905 | vxor $tweak,$twk0,$rndkey0 |
| 2906 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 2907 | stvx_u $tweak,0,$ivp |
| 2908 | |
| 2909 | Lxts_enc6x_ret: |
| 2910 | mtlr r11 |
| 2911 | li r10,`$FRAME+15` |
| 2912 | li r11,`$FRAME+31` |
| 2913 | stvx $seven,r10,$sp # wipe copies of round keys |
| 2914 | addi r10,r10,32 |
| 2915 | stvx $seven,r11,$sp |
| 2916 | addi r11,r11,32 |
| 2917 | stvx $seven,r10,$sp |
| 2918 | addi r10,r10,32 |
| 2919 | stvx $seven,r11,$sp |
| 2920 | addi r11,r11,32 |
| 2921 | stvx $seven,r10,$sp |
| 2922 | addi r10,r10,32 |
| 2923 | stvx $seven,r11,$sp |
| 2924 | addi r11,r11,32 |
| 2925 | stvx $seven,r10,$sp |
| 2926 | addi r10,r10,32 |
| 2927 | stvx $seven,r11,$sp |
| 2928 | addi r11,r11,32 |
| 2929 | |
| 2930 | mtspr 256,$vrsave |
| 2931 | lvx v20,r10,$sp # ABI says so |
| 2932 | addi r10,r10,32 |
| 2933 | lvx v21,r11,$sp |
| 2934 | addi r11,r11,32 |
| 2935 | lvx v22,r10,$sp |
| 2936 | addi r10,r10,32 |
| 2937 | lvx v23,r11,$sp |
| 2938 | addi r11,r11,32 |
| 2939 | lvx v24,r10,$sp |
| 2940 | addi r10,r10,32 |
| 2941 | lvx v25,r11,$sp |
| 2942 | addi r11,r11,32 |
| 2943 | lvx v26,r10,$sp |
| 2944 | addi r10,r10,32 |
| 2945 | lvx v27,r11,$sp |
| 2946 | addi r11,r11,32 |
| 2947 | lvx v28,r10,$sp |
| 2948 | addi r10,r10,32 |
| 2949 | lvx v29,r11,$sp |
| 2950 | addi r11,r11,32 |
| 2951 | lvx v30,r10,$sp |
| 2952 | lvx v31,r11,$sp |
| 2953 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 2954 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 2955 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 2956 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 2957 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 2958 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 2959 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 2960 | blr |
| 2961 | .long 0 |
| 2962 | .byte 0,12,0x04,1,0x80,6,6,0 |
| 2963 | .long 0 |
| 2964 | |
| 2965 | .align 5 |
| 2966 | _aesp8_xts_enc5x: |
| 2967 | vcipher $out0,$out0,v24 |
| 2968 | vcipher $out1,$out1,v24 |
| 2969 | vcipher $out2,$out2,v24 |
| 2970 | vcipher $out3,$out3,v24 |
| 2971 | vcipher $out4,$out4,v24 |
| 2972 | lvx v24,$x20,$key_ # round[3] |
| 2973 | addi $key_,$key_,0x20 |
| 2974 | |
| 2975 | vcipher $out0,$out0,v25 |
| 2976 | vcipher $out1,$out1,v25 |
| 2977 | vcipher $out2,$out2,v25 |
| 2978 | vcipher $out3,$out3,v25 |
| 2979 | vcipher $out4,$out4,v25 |
| 2980 | lvx v25,$x10,$key_ # round[4] |
| 2981 | bdnz _aesp8_xts_enc5x |
| 2982 | |
| 2983 | add $inp,$inp,$taillen |
| 2984 | cmpwi $taillen,0 |
| 2985 | vcipher $out0,$out0,v24 |
| 2986 | vcipher $out1,$out1,v24 |
| 2987 | vcipher $out2,$out2,v24 |
| 2988 | vcipher $out3,$out3,v24 |
| 2989 | vcipher $out4,$out4,v24 |
| 2990 | |
| 2991 | subi $inp,$inp,16 |
| 2992 | vcipher $out0,$out0,v25 |
| 2993 | vcipher $out1,$out1,v25 |
| 2994 | vcipher $out2,$out2,v25 |
| 2995 | vcipher $out3,$out3,v25 |
| 2996 | vcipher $out4,$out4,v25 |
| 2997 | vxor $twk0,$twk0,v31 |
| 2998 | |
| 2999 | vcipher $out0,$out0,v26 |
| 3000 | lvsr $inpperm,r0,$taillen # $in5 is no more |
| 3001 | vcipher $out1,$out1,v26 |
| 3002 | vcipher $out2,$out2,v26 |
| 3003 | vcipher $out3,$out3,v26 |
| 3004 | vcipher $out4,$out4,v26 |
| 3005 | vxor $in1,$twk1,v31 |
| 3006 | |
| 3007 | vcipher $out0,$out0,v27 |
| 3008 | lvx_u $in0,0,$inp |
| 3009 | vcipher $out1,$out1,v27 |
| 3010 | vcipher $out2,$out2,v27 |
| 3011 | vcipher $out3,$out3,v27 |
| 3012 | vcipher $out4,$out4,v27 |
| 3013 | vxor $in2,$twk2,v31 |
| 3014 | |
| 3015 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 3016 | vcipher $out0,$out0,v28 |
| 3017 | vcipher $out1,$out1,v28 |
| 3018 | vcipher $out2,$out2,v28 |
| 3019 | vcipher $out3,$out3,v28 |
| 3020 | vcipher $out4,$out4,v28 |
| 3021 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3022 | vxor $in3,$twk3,v31 |
| 3023 | |
| 3024 | vcipher $out0,$out0,v29 |
| 3025 | le?vperm $in0,$in0,$in0,$leperm |
| 3026 | vcipher $out1,$out1,v29 |
| 3027 | vcipher $out2,$out2,v29 |
| 3028 | vcipher $out3,$out3,v29 |
| 3029 | vcipher $out4,$out4,v29 |
| 3030 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3031 | vxor $in4,$twk4,v31 |
| 3032 | |
| 3033 | vcipher $out0,$out0,v30 |
| 3034 | vperm $in0,$in0,$in0,$inpperm |
| 3035 | vcipher $out1,$out1,v30 |
| 3036 | vcipher $out2,$out2,v30 |
| 3037 | vcipher $out3,$out3,v30 |
| 3038 | vcipher $out4,$out4,v30 |
| 3039 | |
| 3040 | vcipherlast $out0,$out0,$twk0 |
| 3041 | vcipherlast $out1,$out1,$in1 |
| 3042 | vcipherlast $out2,$out2,$in2 |
| 3043 | vcipherlast $out3,$out3,$in3 |
| 3044 | vcipherlast $out4,$out4,$in4 |
| 3045 | blr |
| 3046 | .long 0 |
| 3047 | .byte 0,12,0x14,0,0,0,0,0 |
| 3048 | |
| 3049 | .align 5 |
| 3050 | _aesp8_xts_decrypt6x: |
| 3051 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 3052 | mflr r11 |
| 3053 | li r7,`$FRAME+8*16+15` |
| 3054 | li r3,`$FRAME+8*16+31` |
| 3055 | $PUSH r11,`$FRAME+21*16+6*$SIZE_T+$LRSAVE`($sp) |
| 3056 | stvx v20,r7,$sp # ABI says so |
| 3057 | addi r7,r7,32 |
| 3058 | stvx v21,r3,$sp |
| 3059 | addi r3,r3,32 |
| 3060 | stvx v22,r7,$sp |
| 3061 | addi r7,r7,32 |
| 3062 | stvx v23,r3,$sp |
| 3063 | addi r3,r3,32 |
| 3064 | stvx v24,r7,$sp |
| 3065 | addi r7,r7,32 |
| 3066 | stvx v25,r3,$sp |
| 3067 | addi r3,r3,32 |
| 3068 | stvx v26,r7,$sp |
| 3069 | addi r7,r7,32 |
| 3070 | stvx v27,r3,$sp |
| 3071 | addi r3,r3,32 |
| 3072 | stvx v28,r7,$sp |
| 3073 | addi r7,r7,32 |
| 3074 | stvx v29,r3,$sp |
| 3075 | addi r3,r3,32 |
| 3076 | stvx v30,r7,$sp |
| 3077 | stvx v31,r3,$sp |
| 3078 | li r0,-1 |
| 3079 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 3080 | li $x10,0x10 |
| 3081 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 3082 | li $x20,0x20 |
| 3083 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 3084 | li $x30,0x30 |
| 3085 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 3086 | li $x40,0x40 |
| 3087 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 3088 | li $x50,0x50 |
| 3089 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 3090 | li $x60,0x60 |
| 3091 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 3092 | li $x70,0x70 |
| 3093 | mtspr 256,r0 |
| 3094 | |
| 3095 | subi $rounds,$rounds,3 # -4 in total |
| 3096 | |
| 3097 | lvx $rndkey0,$x00,$key1 # load key schedule |
| 3098 | lvx v30,$x10,$key1 |
| 3099 | addi $key1,$key1,0x20 |
| 3100 | lvx v31,$x00,$key1 |
| 3101 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
| 3102 | addi $key_,$sp,$FRAME+15 |
| 3103 | mtctr $rounds |
| 3104 | |
| 3105 | Load_xts_dec_key: |
| 3106 | ?vperm v24,v30,v31,$keyperm |
| 3107 | lvx v30,$x10,$key1 |
| 3108 | addi $key1,$key1,0x20 |
| 3109 | stvx v24,$x00,$key_ # off-load round[1] |
| 3110 | ?vperm v25,v31,v30,$keyperm |
| 3111 | lvx v31,$x00,$key1 |
| 3112 | stvx v25,$x10,$key_ # off-load round[2] |
| 3113 | addi $key_,$key_,0x20 |
| 3114 | bdnz Load_xts_dec_key |
| 3115 | |
| 3116 | lvx v26,$x10,$key1 |
| 3117 | ?vperm v24,v30,v31,$keyperm |
| 3118 | lvx v27,$x20,$key1 |
| 3119 | stvx v24,$x00,$key_ # off-load round[3] |
| 3120 | ?vperm v25,v31,v26,$keyperm |
| 3121 | lvx v28,$x30,$key1 |
| 3122 | stvx v25,$x10,$key_ # off-load round[4] |
| 3123 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 3124 | ?vperm v26,v26,v27,$keyperm |
| 3125 | lvx v29,$x40,$key1 |
| 3126 | ?vperm v27,v27,v28,$keyperm |
| 3127 | lvx v30,$x50,$key1 |
| 3128 | ?vperm v28,v28,v29,$keyperm |
| 3129 | lvx v31,$x60,$key1 |
| 3130 | ?vperm v29,v29,v30,$keyperm |
| 3131 | lvx $twk5,$x70,$key1 # borrow $twk5 |
| 3132 | ?vperm v30,v30,v31,$keyperm |
| 3133 | lvx v24,$x00,$key_ # pre-load round[1] |
| 3134 | ?vperm v31,v31,$twk5,$keyperm |
| 3135 | lvx v25,$x10,$key_ # pre-load round[2] |
| 3136 | |
| 3137 | vperm $in0,$inout,$inptail,$inpperm |
| 3138 | subi $inp,$inp,31 # undo "caller" |
| 3139 | vxor $twk0,$tweak,$rndkey0 |
| 3140 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3141 | vaddubm $tweak,$tweak,$tweak |
| 3142 | vsldoi $tmp,$tmp,$tmp,15 |
| 3143 | vand $tmp,$tmp,$eighty7 |
| 3144 | vxor $out0,$in0,$twk0 |
| 3145 | vxor $tweak,$tweak,$tmp |
| 3146 | |
| 3147 | lvx_u $in1,$x10,$inp |
| 3148 | vxor $twk1,$tweak,$rndkey0 |
| 3149 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3150 | vaddubm $tweak,$tweak,$tweak |
| 3151 | vsldoi $tmp,$tmp,$tmp,15 |
| 3152 | le?vperm $in1,$in1,$in1,$leperm |
| 3153 | vand $tmp,$tmp,$eighty7 |
| 3154 | vxor $out1,$in1,$twk1 |
| 3155 | vxor $tweak,$tweak,$tmp |
| 3156 | |
| 3157 | lvx_u $in2,$x20,$inp |
| 3158 | andi. $taillen,$len,15 |
| 3159 | vxor $twk2,$tweak,$rndkey0 |
| 3160 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3161 | vaddubm $tweak,$tweak,$tweak |
| 3162 | vsldoi $tmp,$tmp,$tmp,15 |
| 3163 | le?vperm $in2,$in2,$in2,$leperm |
| 3164 | vand $tmp,$tmp,$eighty7 |
| 3165 | vxor $out2,$in2,$twk2 |
| 3166 | vxor $tweak,$tweak,$tmp |
| 3167 | |
| 3168 | lvx_u $in3,$x30,$inp |
| 3169 | sub $len,$len,$taillen |
| 3170 | vxor $twk3,$tweak,$rndkey0 |
| 3171 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3172 | vaddubm $tweak,$tweak,$tweak |
| 3173 | vsldoi $tmp,$tmp,$tmp,15 |
| 3174 | le?vperm $in3,$in3,$in3,$leperm |
| 3175 | vand $tmp,$tmp,$eighty7 |
| 3176 | vxor $out3,$in3,$twk3 |
| 3177 | vxor $tweak,$tweak,$tmp |
| 3178 | |
| 3179 | lvx_u $in4,$x40,$inp |
| 3180 | subi $len,$len,0x60 |
| 3181 | vxor $twk4,$tweak,$rndkey0 |
| 3182 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3183 | vaddubm $tweak,$tweak,$tweak |
| 3184 | vsldoi $tmp,$tmp,$tmp,15 |
| 3185 | le?vperm $in4,$in4,$in4,$leperm |
| 3186 | vand $tmp,$tmp,$eighty7 |
| 3187 | vxor $out4,$in4,$twk4 |
| 3188 | vxor $tweak,$tweak,$tmp |
| 3189 | |
| 3190 | lvx_u $in5,$x50,$inp |
| 3191 | addi $inp,$inp,0x60 |
| 3192 | vxor $twk5,$tweak,$rndkey0 |
| 3193 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3194 | vaddubm $tweak,$tweak,$tweak |
| 3195 | vsldoi $tmp,$tmp,$tmp,15 |
| 3196 | le?vperm $in5,$in5,$in5,$leperm |
| 3197 | vand $tmp,$tmp,$eighty7 |
| 3198 | vxor $out5,$in5,$twk5 |
| 3199 | vxor $tweak,$tweak,$tmp |
| 3200 | |
| 3201 | vxor v31,v31,$rndkey0 |
| 3202 | mtctr $rounds |
| 3203 | b Loop_xts_dec6x |
| 3204 | |
| 3205 | .align 5 |
| 3206 | Loop_xts_dec6x: |
| 3207 | vncipher $out0,$out0,v24 |
| 3208 | vncipher $out1,$out1,v24 |
| 3209 | vncipher $out2,$out2,v24 |
| 3210 | vncipher $out3,$out3,v24 |
| 3211 | vncipher $out4,$out4,v24 |
| 3212 | vncipher $out5,$out5,v24 |
| 3213 | lvx v24,$x20,$key_ # round[3] |
| 3214 | addi $key_,$key_,0x20 |
| 3215 | |
| 3216 | vncipher $out0,$out0,v25 |
| 3217 | vncipher $out1,$out1,v25 |
| 3218 | vncipher $out2,$out2,v25 |
| 3219 | vncipher $out3,$out3,v25 |
| 3220 | vncipher $out4,$out4,v25 |
| 3221 | vncipher $out5,$out5,v25 |
| 3222 | lvx v25,$x10,$key_ # round[4] |
| 3223 | bdnz Loop_xts_dec6x |
| 3224 | |
| 3225 | subic $len,$len,96 # $len-=96 |
| 3226 | vxor $in0,$twk0,v31 # xor with last round key |
| 3227 | vncipher $out0,$out0,v24 |
| 3228 | vncipher $out1,$out1,v24 |
| 3229 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3230 | vxor $twk0,$tweak,$rndkey0 |
| 3231 | vaddubm $tweak,$tweak,$tweak |
| 3232 | vncipher $out2,$out2,v24 |
| 3233 | vncipher $out3,$out3,v24 |
| 3234 | vsldoi $tmp,$tmp,$tmp,15 |
| 3235 | vncipher $out4,$out4,v24 |
| 3236 | vncipher $out5,$out5,v24 |
| 3237 | |
| 3238 | subfe. r0,r0,r0 # borrow?-1:0 |
| 3239 | vand $tmp,$tmp,$eighty7 |
| 3240 | vncipher $out0,$out0,v25 |
| 3241 | vncipher $out1,$out1,v25 |
| 3242 | vxor $tweak,$tweak,$tmp |
| 3243 | vncipher $out2,$out2,v25 |
| 3244 | vncipher $out3,$out3,v25 |
| 3245 | vxor $in1,$twk1,v31 |
| 3246 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3247 | vxor $twk1,$tweak,$rndkey0 |
| 3248 | vncipher $out4,$out4,v25 |
| 3249 | vncipher $out5,$out5,v25 |
| 3250 | |
| 3251 | and r0,r0,$len |
| 3252 | vaddubm $tweak,$tweak,$tweak |
| 3253 | vsldoi $tmp,$tmp,$tmp,15 |
| 3254 | vncipher $out0,$out0,v26 |
| 3255 | vncipher $out1,$out1,v26 |
| 3256 | vand $tmp,$tmp,$eighty7 |
| 3257 | vncipher $out2,$out2,v26 |
| 3258 | vncipher $out3,$out3,v26 |
| 3259 | vxor $tweak,$tweak,$tmp |
| 3260 | vncipher $out4,$out4,v26 |
| 3261 | vncipher $out5,$out5,v26 |
| 3262 | |
| 3263 | add $inp,$inp,r0 # $inp is adjusted in such |
| 3264 | # way that at exit from the |
| 3265 | # loop inX-in5 are loaded |
| 3266 | # with last "words" |
| 3267 | vxor $in2,$twk2,v31 |
| 3268 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3269 | vxor $twk2,$tweak,$rndkey0 |
| 3270 | vaddubm $tweak,$tweak,$tweak |
| 3271 | vncipher $out0,$out0,v27 |
| 3272 | vncipher $out1,$out1,v27 |
| 3273 | vsldoi $tmp,$tmp,$tmp,15 |
| 3274 | vncipher $out2,$out2,v27 |
| 3275 | vncipher $out3,$out3,v27 |
| 3276 | vand $tmp,$tmp,$eighty7 |
| 3277 | vncipher $out4,$out4,v27 |
| 3278 | vncipher $out5,$out5,v27 |
| 3279 | |
| 3280 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 3281 | vxor $tweak,$tweak,$tmp |
| 3282 | vncipher $out0,$out0,v28 |
| 3283 | vncipher $out1,$out1,v28 |
| 3284 | vxor $in3,$twk3,v31 |
| 3285 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3286 | vxor $twk3,$tweak,$rndkey0 |
| 3287 | vncipher $out2,$out2,v28 |
| 3288 | vncipher $out3,$out3,v28 |
| 3289 | vaddubm $tweak,$tweak,$tweak |
| 3290 | vsldoi $tmp,$tmp,$tmp,15 |
| 3291 | vncipher $out4,$out4,v28 |
| 3292 | vncipher $out5,$out5,v28 |
| 3293 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3294 | vand $tmp,$tmp,$eighty7 |
| 3295 | |
| 3296 | vncipher $out0,$out0,v29 |
| 3297 | vncipher $out1,$out1,v29 |
| 3298 | vxor $tweak,$tweak,$tmp |
| 3299 | vncipher $out2,$out2,v29 |
| 3300 | vncipher $out3,$out3,v29 |
| 3301 | vxor $in4,$twk4,v31 |
| 3302 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3303 | vxor $twk4,$tweak,$rndkey0 |
| 3304 | vncipher $out4,$out4,v29 |
| 3305 | vncipher $out5,$out5,v29 |
| 3306 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3307 | vaddubm $tweak,$tweak,$tweak |
| 3308 | vsldoi $tmp,$tmp,$tmp,15 |
| 3309 | |
| 3310 | vncipher $out0,$out0,v30 |
| 3311 | vncipher $out1,$out1,v30 |
| 3312 | vand $tmp,$tmp,$eighty7 |
| 3313 | vncipher $out2,$out2,v30 |
| 3314 | vncipher $out3,$out3,v30 |
| 3315 | vxor $tweak,$tweak,$tmp |
| 3316 | vncipher $out4,$out4,v30 |
| 3317 | vncipher $out5,$out5,v30 |
| 3318 | vxor $in5,$twk5,v31 |
| 3319 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3320 | vxor $twk5,$tweak,$rndkey0 |
| 3321 | |
| 3322 | vncipherlast $out0,$out0,$in0 |
| 3323 | lvx_u $in0,$x00,$inp # load next input block |
| 3324 | vaddubm $tweak,$tweak,$tweak |
| 3325 | vsldoi $tmp,$tmp,$tmp,15 |
| 3326 | vncipherlast $out1,$out1,$in1 |
| 3327 | lvx_u $in1,$x10,$inp |
| 3328 | vncipherlast $out2,$out2,$in2 |
| 3329 | le?vperm $in0,$in0,$in0,$leperm |
| 3330 | lvx_u $in2,$x20,$inp |
| 3331 | vand $tmp,$tmp,$eighty7 |
| 3332 | vncipherlast $out3,$out3,$in3 |
| 3333 | le?vperm $in1,$in1,$in1,$leperm |
| 3334 | lvx_u $in3,$x30,$inp |
| 3335 | vncipherlast $out4,$out4,$in4 |
| 3336 | le?vperm $in2,$in2,$in2,$leperm |
| 3337 | lvx_u $in4,$x40,$inp |
| 3338 | vxor $tweak,$tweak,$tmp |
| 3339 | vncipherlast $out5,$out5,$in5 |
| 3340 | le?vperm $in3,$in3,$in3,$leperm |
| 3341 | lvx_u $in5,$x50,$inp |
| 3342 | addi $inp,$inp,0x60 |
| 3343 | le?vperm $in4,$in4,$in4,$leperm |
| 3344 | le?vperm $in5,$in5,$in5,$leperm |
| 3345 | |
| 3346 | le?vperm $out0,$out0,$out0,$leperm |
| 3347 | le?vperm $out1,$out1,$out1,$leperm |
| 3348 | stvx_u $out0,$x00,$out # store output |
| 3349 | vxor $out0,$in0,$twk0 |
| 3350 | le?vperm $out2,$out2,$out2,$leperm |
| 3351 | stvx_u $out1,$x10,$out |
| 3352 | vxor $out1,$in1,$twk1 |
| 3353 | le?vperm $out3,$out3,$out3,$leperm |
| 3354 | stvx_u $out2,$x20,$out |
| 3355 | vxor $out2,$in2,$twk2 |
| 3356 | le?vperm $out4,$out4,$out4,$leperm |
| 3357 | stvx_u $out3,$x30,$out |
| 3358 | vxor $out3,$in3,$twk3 |
| 3359 | le?vperm $out5,$out5,$out5,$leperm |
| 3360 | stvx_u $out4,$x40,$out |
| 3361 | vxor $out4,$in4,$twk4 |
| 3362 | stvx_u $out5,$x50,$out |
| 3363 | vxor $out5,$in5,$twk5 |
| 3364 | addi $out,$out,0x60 |
| 3365 | |
| 3366 | mtctr $rounds |
| 3367 | beq Loop_xts_dec6x # did $len-=96 borrow? |
| 3368 | |
| 3369 | addic. $len,$len,0x60 |
| 3370 | beq Lxts_dec6x_zero |
| 3371 | cmpwi $len,0x20 |
| 3372 | blt Lxts_dec6x_one |
| 3373 | nop |
| 3374 | beq Lxts_dec6x_two |
| 3375 | cmpwi $len,0x40 |
| 3376 | blt Lxts_dec6x_three |
| 3377 | nop |
| 3378 | beq Lxts_dec6x_four |
| 3379 | |
| 3380 | Lxts_dec6x_five: |
| 3381 | vxor $out0,$in1,$twk0 |
| 3382 | vxor $out1,$in2,$twk1 |
| 3383 | vxor $out2,$in3,$twk2 |
| 3384 | vxor $out3,$in4,$twk3 |
| 3385 | vxor $out4,$in5,$twk4 |
| 3386 | |
| 3387 | bl _aesp8_xts_dec5x |
| 3388 | |
| 3389 | le?vperm $out0,$out0,$out0,$leperm |
| 3390 | vmr $twk0,$twk5 # unused tweak |
| 3391 | vxor $twk1,$tweak,$rndkey0 |
| 3392 | le?vperm $out1,$out1,$out1,$leperm |
| 3393 | stvx_u $out0,$x00,$out # store output |
| 3394 | vxor $out0,$in0,$twk1 |
| 3395 | le?vperm $out2,$out2,$out2,$leperm |
| 3396 | stvx_u $out1,$x10,$out |
| 3397 | le?vperm $out3,$out3,$out3,$leperm |
| 3398 | stvx_u $out2,$x20,$out |
| 3399 | le?vperm $out4,$out4,$out4,$leperm |
| 3400 | stvx_u $out3,$x30,$out |
| 3401 | stvx_u $out4,$x40,$out |
| 3402 | addi $out,$out,0x50 |
| 3403 | bne Lxts_dec6x_steal |
| 3404 | b Lxts_dec6x_done |
| 3405 | |
| 3406 | .align 4 |
| 3407 | Lxts_dec6x_four: |
| 3408 | vxor $out0,$in2,$twk0 |
| 3409 | vxor $out1,$in3,$twk1 |
| 3410 | vxor $out2,$in4,$twk2 |
| 3411 | vxor $out3,$in5,$twk3 |
| 3412 | vxor $out4,$out4,$out4 |
| 3413 | |
| 3414 | bl _aesp8_xts_dec5x |
| 3415 | |
| 3416 | le?vperm $out0,$out0,$out0,$leperm |
| 3417 | vmr $twk0,$twk4 # unused tweak |
| 3418 | vmr $twk1,$twk5 |
| 3419 | le?vperm $out1,$out1,$out1,$leperm |
| 3420 | stvx_u $out0,$x00,$out # store output |
| 3421 | vxor $out0,$in0,$twk5 |
| 3422 | le?vperm $out2,$out2,$out2,$leperm |
| 3423 | stvx_u $out1,$x10,$out |
| 3424 | le?vperm $out3,$out3,$out3,$leperm |
| 3425 | stvx_u $out2,$x20,$out |
| 3426 | stvx_u $out3,$x30,$out |
| 3427 | addi $out,$out,0x40 |
| 3428 | bne Lxts_dec6x_steal |
| 3429 | b Lxts_dec6x_done |
| 3430 | |
| 3431 | .align 4 |
| 3432 | Lxts_dec6x_three: |
| 3433 | vxor $out0,$in3,$twk0 |
| 3434 | vxor $out1,$in4,$twk1 |
| 3435 | vxor $out2,$in5,$twk2 |
| 3436 | vxor $out3,$out3,$out3 |
| 3437 | vxor $out4,$out4,$out4 |
| 3438 | |
| 3439 | bl _aesp8_xts_dec5x |
| 3440 | |
| 3441 | le?vperm $out0,$out0,$out0,$leperm |
| 3442 | vmr $twk0,$twk3 # unused tweak |
| 3443 | vmr $twk1,$twk4 |
| 3444 | le?vperm $out1,$out1,$out1,$leperm |
| 3445 | stvx_u $out0,$x00,$out # store output |
| 3446 | vxor $out0,$in0,$twk4 |
| 3447 | le?vperm $out2,$out2,$out2,$leperm |
| 3448 | stvx_u $out1,$x10,$out |
| 3449 | stvx_u $out2,$x20,$out |
| 3450 | addi $out,$out,0x30 |
| 3451 | bne Lxts_dec6x_steal |
| 3452 | b Lxts_dec6x_done |
| 3453 | |
| 3454 | .align 4 |
| 3455 | Lxts_dec6x_two: |
| 3456 | vxor $out0,$in4,$twk0 |
| 3457 | vxor $out1,$in5,$twk1 |
| 3458 | vxor $out2,$out2,$out2 |
| 3459 | vxor $out3,$out3,$out3 |
| 3460 | vxor $out4,$out4,$out4 |
| 3461 | |
| 3462 | bl _aesp8_xts_dec5x |
| 3463 | |
| 3464 | le?vperm $out0,$out0,$out0,$leperm |
| 3465 | vmr $twk0,$twk2 # unused tweak |
| 3466 | vmr $twk1,$twk3 |
| 3467 | le?vperm $out1,$out1,$out1,$leperm |
| 3468 | stvx_u $out0,$x00,$out # store output |
| 3469 | vxor $out0,$in0,$twk3 |
| 3470 | stvx_u $out1,$x10,$out |
| 3471 | addi $out,$out,0x20 |
| 3472 | bne Lxts_dec6x_steal |
| 3473 | b Lxts_dec6x_done |
| 3474 | |
| 3475 | .align 4 |
| 3476 | Lxts_dec6x_one: |
| 3477 | vxor $out0,$in5,$twk0 |
| 3478 | nop |
| 3479 | Loop_xts_dec1x: |
| 3480 | vncipher $out0,$out0,v24 |
| 3481 | lvx v24,$x20,$key_ # round[3] |
| 3482 | addi $key_,$key_,0x20 |
| 3483 | |
| 3484 | vncipher $out0,$out0,v25 |
| 3485 | lvx v25,$x10,$key_ # round[4] |
| 3486 | bdnz Loop_xts_dec1x |
| 3487 | |
| 3488 | subi r0,$taillen,1 |
| 3489 | vncipher $out0,$out0,v24 |
| 3490 | |
| 3491 | andi. r0,r0,16 |
| 3492 | cmpwi $taillen,0 |
| 3493 | vncipher $out0,$out0,v25 |
| 3494 | |
| 3495 | sub $inp,$inp,r0 |
| 3496 | vncipher $out0,$out0,v26 |
| 3497 | |
| 3498 | lvx_u $in0,0,$inp |
| 3499 | vncipher $out0,$out0,v27 |
| 3500 | |
| 3501 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 3502 | vncipher $out0,$out0,v28 |
| 3503 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3504 | |
| 3505 | vncipher $out0,$out0,v29 |
| 3506 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3507 | vxor $twk0,$twk0,v31 |
| 3508 | |
| 3509 | le?vperm $in0,$in0,$in0,$leperm |
| 3510 | vncipher $out0,$out0,v30 |
| 3511 | |
| 3512 | mtctr $rounds |
| 3513 | vncipherlast $out0,$out0,$twk0 |
| 3514 | |
| 3515 | vmr $twk0,$twk1 # unused tweak |
| 3516 | vmr $twk1,$twk2 |
| 3517 | le?vperm $out0,$out0,$out0,$leperm |
| 3518 | stvx_u $out0,$x00,$out # store output |
| 3519 | addi $out,$out,0x10 |
| 3520 | vxor $out0,$in0,$twk2 |
| 3521 | bne Lxts_dec6x_steal |
| 3522 | b Lxts_dec6x_done |
| 3523 | |
| 3524 | .align 4 |
| 3525 | Lxts_dec6x_zero: |
| 3526 | cmpwi $taillen,0 |
| 3527 | beq Lxts_dec6x_done |
| 3528 | |
| 3529 | lvx_u $in0,0,$inp |
| 3530 | le?vperm $in0,$in0,$in0,$leperm |
| 3531 | vxor $out0,$in0,$twk1 |
| 3532 | Lxts_dec6x_steal: |
| 3533 | vncipher $out0,$out0,v24 |
| 3534 | lvx v24,$x20,$key_ # round[3] |
| 3535 | addi $key_,$key_,0x20 |
| 3536 | |
| 3537 | vncipher $out0,$out0,v25 |
| 3538 | lvx v25,$x10,$key_ # round[4] |
| 3539 | bdnz Lxts_dec6x_steal |
| 3540 | |
| 3541 | add $inp,$inp,$taillen |
| 3542 | vncipher $out0,$out0,v24 |
| 3543 | |
| 3544 | cmpwi $taillen,0 |
| 3545 | vncipher $out0,$out0,v25 |
| 3546 | |
| 3547 | lvx_u $in0,0,$inp |
| 3548 | vncipher $out0,$out0,v26 |
| 3549 | |
| 3550 | lvsr $inpperm,0,$taillen # $in5 is no more |
| 3551 | vncipher $out0,$out0,v27 |
| 3552 | |
| 3553 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 3554 | vncipher $out0,$out0,v28 |
| 3555 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3556 | |
| 3557 | vncipher $out0,$out0,v29 |
| 3558 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3559 | vxor $twk1,$twk1,v31 |
| 3560 | |
| 3561 | le?vperm $in0,$in0,$in0,$leperm |
| 3562 | vncipher $out0,$out0,v30 |
| 3563 | |
| 3564 | vperm $in0,$in0,$in0,$inpperm |
| 3565 | vncipherlast $tmp,$out0,$twk1 |
| 3566 | |
| 3567 | le?vperm $out0,$tmp,$tmp,$leperm |
| 3568 | le?stvx_u $out0,0,$out |
| 3569 | be?stvx_u $tmp,0,$out |
| 3570 | |
| 3571 | vxor $out0,$out0,$out0 |
| 3572 | vspltisb $out1,-1 |
| 3573 | vperm $out0,$out0,$out1,$inpperm |
| 3574 | vsel $out0,$in0,$tmp,$out0 |
| 3575 | vxor $out0,$out0,$twk0 |
| 3576 | |
| 3577 | subi r30,$out,1 |
| 3578 | mtctr $taillen |
| 3579 | Loop_xts_dec6x_steal: |
| 3580 | lbzu r0,1(r30) |
| 3581 | stb r0,16(r30) |
| 3582 | bdnz Loop_xts_dec6x_steal |
| 3583 | |
| 3584 | li $taillen,0 |
| 3585 | mtctr $rounds |
| 3586 | b Loop_xts_dec1x # one more time... |
| 3587 | |
| 3588 | .align 4 |
| 3589 | Lxts_dec6x_done: |
| 3590 | ${UCMP}i $ivp,0 |
| 3591 | beq Lxts_dec6x_ret |
| 3592 | |
| 3593 | vxor $tweak,$twk0,$rndkey0 |
| 3594 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 3595 | stvx_u $tweak,0,$ivp |
| 3596 | |
| 3597 | Lxts_dec6x_ret: |
| 3598 | mtlr r11 |
| 3599 | li r10,`$FRAME+15` |
| 3600 | li r11,`$FRAME+31` |
| 3601 | stvx $seven,r10,$sp # wipe copies of round keys |
| 3602 | addi r10,r10,32 |
| 3603 | stvx $seven,r11,$sp |
| 3604 | addi r11,r11,32 |
| 3605 | stvx $seven,r10,$sp |
| 3606 | addi r10,r10,32 |
| 3607 | stvx $seven,r11,$sp |
| 3608 | addi r11,r11,32 |
| 3609 | stvx $seven,r10,$sp |
| 3610 | addi r10,r10,32 |
| 3611 | stvx $seven,r11,$sp |
| 3612 | addi r11,r11,32 |
| 3613 | stvx $seven,r10,$sp |
| 3614 | addi r10,r10,32 |
| 3615 | stvx $seven,r11,$sp |
| 3616 | addi r11,r11,32 |
| 3617 | |
| 3618 | mtspr 256,$vrsave |
| 3619 | lvx v20,r10,$sp # ABI says so |
| 3620 | addi r10,r10,32 |
| 3621 | lvx v21,r11,$sp |
| 3622 | addi r11,r11,32 |
| 3623 | lvx v22,r10,$sp |
| 3624 | addi r10,r10,32 |
| 3625 | lvx v23,r11,$sp |
| 3626 | addi r11,r11,32 |
| 3627 | lvx v24,r10,$sp |
| 3628 | addi r10,r10,32 |
| 3629 | lvx v25,r11,$sp |
| 3630 | addi r11,r11,32 |
| 3631 | lvx v26,r10,$sp |
| 3632 | addi r10,r10,32 |
| 3633 | lvx v27,r11,$sp |
| 3634 | addi r11,r11,32 |
| 3635 | lvx v28,r10,$sp |
| 3636 | addi r10,r10,32 |
| 3637 | lvx v29,r11,$sp |
| 3638 | addi r11,r11,32 |
| 3639 | lvx v30,r10,$sp |
| 3640 | lvx v31,r11,$sp |
| 3641 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 3642 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 3643 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 3644 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 3645 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 3646 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 3647 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 3648 | blr |
| 3649 | .long 0 |
| 3650 | .byte 0,12,0x04,1,0x80,6,6,0 |
| 3651 | .long 0 |
| 3652 | |
| 3653 | .align 5 |
| 3654 | _aesp8_xts_dec5x: |
| 3655 | vncipher $out0,$out0,v24 |
| 3656 | vncipher $out1,$out1,v24 |
| 3657 | vncipher $out2,$out2,v24 |
| 3658 | vncipher $out3,$out3,v24 |
| 3659 | vncipher $out4,$out4,v24 |
| 3660 | lvx v24,$x20,$key_ # round[3] |
| 3661 | addi $key_,$key_,0x20 |
| 3662 | |
| 3663 | vncipher $out0,$out0,v25 |
| 3664 | vncipher $out1,$out1,v25 |
| 3665 | vncipher $out2,$out2,v25 |
| 3666 | vncipher $out3,$out3,v25 |
| 3667 | vncipher $out4,$out4,v25 |
| 3668 | lvx v25,$x10,$key_ # round[4] |
| 3669 | bdnz _aesp8_xts_dec5x |
| 3670 | |
| 3671 | subi r0,$taillen,1 |
| 3672 | vncipher $out0,$out0,v24 |
| 3673 | vncipher $out1,$out1,v24 |
| 3674 | vncipher $out2,$out2,v24 |
| 3675 | vncipher $out3,$out3,v24 |
| 3676 | vncipher $out4,$out4,v24 |
| 3677 | |
| 3678 | andi. r0,r0,16 |
| 3679 | cmpwi $taillen,0 |
| 3680 | vncipher $out0,$out0,v25 |
| 3681 | vncipher $out1,$out1,v25 |
| 3682 | vncipher $out2,$out2,v25 |
| 3683 | vncipher $out3,$out3,v25 |
| 3684 | vncipher $out4,$out4,v25 |
| 3685 | vxor $twk0,$twk0,v31 |
| 3686 | |
| 3687 | sub $inp,$inp,r0 |
| 3688 | vncipher $out0,$out0,v26 |
| 3689 | vncipher $out1,$out1,v26 |
| 3690 | vncipher $out2,$out2,v26 |
| 3691 | vncipher $out3,$out3,v26 |
| 3692 | vncipher $out4,$out4,v26 |
| 3693 | vxor $in1,$twk1,v31 |
| 3694 | |
| 3695 | vncipher $out0,$out0,v27 |
| 3696 | lvx_u $in0,0,$inp |
| 3697 | vncipher $out1,$out1,v27 |
| 3698 | vncipher $out2,$out2,v27 |
| 3699 | vncipher $out3,$out3,v27 |
| 3700 | vncipher $out4,$out4,v27 |
| 3701 | vxor $in2,$twk2,v31 |
| 3702 | |
| 3703 | addi $key_,$sp,$FRAME+15 # rewind $key_ |
| 3704 | vncipher $out0,$out0,v28 |
| 3705 | vncipher $out1,$out1,v28 |
| 3706 | vncipher $out2,$out2,v28 |
| 3707 | vncipher $out3,$out3,v28 |
| 3708 | vncipher $out4,$out4,v28 |
| 3709 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3710 | vxor $in3,$twk3,v31 |
| 3711 | |
| 3712 | vncipher $out0,$out0,v29 |
| 3713 | le?vperm $in0,$in0,$in0,$leperm |
| 3714 | vncipher $out1,$out1,v29 |
| 3715 | vncipher $out2,$out2,v29 |
| 3716 | vncipher $out3,$out3,v29 |
| 3717 | vncipher $out4,$out4,v29 |
| 3718 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3719 | vxor $in4,$twk4,v31 |
| 3720 | |
| 3721 | vncipher $out0,$out0,v30 |
| 3722 | vncipher $out1,$out1,v30 |
| 3723 | vncipher $out2,$out2,v30 |
| 3724 | vncipher $out3,$out3,v30 |
| 3725 | vncipher $out4,$out4,v30 |
| 3726 | |
| 3727 | vncipherlast $out0,$out0,$twk0 |
| 3728 | vncipherlast $out1,$out1,$in1 |
| 3729 | vncipherlast $out2,$out2,$in2 |
| 3730 | vncipherlast $out3,$out3,$in3 |
| 3731 | vncipherlast $out4,$out4,$in4 |
| 3732 | mtctr $rounds |
| 3733 | blr |
| 3734 | .long 0 |
| 3735 | .byte 0,12,0x14,0,0,0,0,0 |
| 3736 | ___ |
| 3737 | }} }}} |
| 3738 | |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 3739 | my $consts=1; |
| 3740 | foreach(split("\n",$code)) { |
| 3741 | s/\`([^\`]*)\`/eval($1)/geo; |
| 3742 | |
| 3743 | # constants table endian-specific conversion |
| 3744 | if ($consts && m/\.(long|byte)\s+(.+)\s+(\?[a-z]*)$/o) { |
| 3745 | my $conv=$3; |
| 3746 | my @bytes=(); |
| 3747 | |
| 3748 | # convert to endian-agnostic format |
| 3749 | if ($1 eq "long") { |
| 3750 | foreach (split(/,\s*/,$2)) { |
| 3751 | my $l = /^0/?oct:int; |
| 3752 | push @bytes,($l>>24)&0xff,($l>>16)&0xff,($l>>8)&0xff,$l&0xff; |
| 3753 | } |
| 3754 | } else { |
| 3755 | @bytes = map(/^0/?oct:int,split(/,\s*/,$2)); |
| 3756 | } |
| 3757 | |
| 3758 | # little-endian conversion |
| 3759 | if ($flavour =~ /le$/o) { |
| 3760 | SWITCH: for($conv) { |
| 3761 | /\?inv/ && do { @bytes=map($_^0xf,@bytes); last; }; |
| Paulo Flabiano Smorigo | 11c6e16 | 2016-07-18 12:26:25 -0300 | [diff] [blame] | 3762 | /\?rev/ && do { @bytes=reverse(@bytes); last; }; |
| Leonidas S. Barbosa | 5c380d6 | 2015-02-06 14:59:35 -0200 | [diff] [blame] | 3763 | } |
| 3764 | } |
| 3765 | |
| 3766 | #emit |
| 3767 | print ".byte\t",join(',',map (sprintf("0x%02x",$_),@bytes)),"\n"; |
| 3768 | next; |
| 3769 | } |
| 3770 | $consts=0 if (m/Lconsts:/o); # end of table |
| 3771 | |
| 3772 | # instructions prefixed with '?' are endian-specific and need |
| 3773 | # to be adjusted accordingly... |
| 3774 | if ($flavour =~ /le$/o) { # little-endian |
| 3775 | s/le\?//o or |
| 3776 | s/be\?/#be#/o or |
| 3777 | s/\?lvsr/lvsl/o or |
| 3778 | s/\?lvsl/lvsr/o or |
| 3779 | s/\?(vperm\s+v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+)/$1$3$2$4/o or |
| 3780 | s/\?(vsldoi\s+v[0-9]+,\s*)(v[0-9]+,)\s*(v[0-9]+,\s*)([0-9]+)/$1$3$2 16-$4/o or |
| 3781 | s/\?(vspltw\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9])/$1$2 3-$3/o; |
| 3782 | } else { # big-endian |
| 3783 | s/le\?/#le#/o or |
| 3784 | s/be\?//o or |
| 3785 | s/\?([a-z]+)/$1/o; |
| 3786 | } |
| 3787 | |
| 3788 | print $_,"\n"; |
| 3789 | } |
| 3790 | |
| 3791 | close STDOUT; |