Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 1 | #! /usr/bin/env perl |
Pete Bentley | 0c61efe | 2019-08-13 09:32:23 +0100 | [diff] [blame^] | 2 | # Copyright 2014-2018 The OpenSSL Project Authors. All Rights Reserved. |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 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 | |
| 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. |
| 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 |
Pete Bentley | 0c61efe | 2019-08-13 09:32:23 +0100 | [diff] [blame^] | 43 | # POWER9[le] 4.02/0.86 0.84 1.05 |
| 44 | # POWER9[be] 3.99/0.78 0.79 0.97 |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 45 | |
| 46 | $flavour = shift; |
| 47 | |
| 48 | if ($flavour =~ /64/) { |
| 49 | $SIZE_T =8; |
| 50 | $LRSAVE =2*$SIZE_T; |
| 51 | $STU ="stdu"; |
| 52 | $POP ="ld"; |
| 53 | $PUSH ="std"; |
| 54 | $UCMP ="cmpld"; |
| 55 | $SHL ="sldi"; |
| 56 | } elsif ($flavour =~ /32/) { |
| 57 | $SIZE_T =4; |
| 58 | $LRSAVE =$SIZE_T; |
| 59 | $STU ="stwu"; |
| 60 | $POP ="lwz"; |
| 61 | $PUSH ="stw"; |
| 62 | $UCMP ="cmplw"; |
| 63 | $SHL ="slwi"; |
| 64 | } else { die "nonsense $flavour"; } |
| 65 | |
| 66 | $LITTLE_ENDIAN = ($flavour=~/le$/) ? $SIZE_T : 0; |
| 67 | |
| 68 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
| 69 | ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or |
Robert Sloan | 572a4e2 | 2017-04-17 10:52:19 -0700 | [diff] [blame] | 70 | ( $xlate="${dir}../../../perlasm/ppc-xlate.pl" and -f $xlate) or |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 71 | die "can't locate ppc-xlate.pl"; |
| 72 | |
| 73 | open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!"; |
| 74 | |
| 75 | $FRAME=8*$SIZE_T; |
| 76 | $prefix="aes_hw"; |
| 77 | |
| 78 | $sp="r1"; |
| 79 | $vrsave="r12"; |
| 80 | |
| 81 | ######################################################################### |
| 82 | {{{ # Key setup procedures # |
| 83 | my ($inp,$bits,$out,$ptr,$cnt,$rounds)=map("r$_",(3..8)); |
| 84 | my ($zero,$in0,$in1,$key,$rcon,$mask,$tmp)=map("v$_",(0..6)); |
| 85 | my ($stage,$outperm,$outmask,$outhead,$outtail)=map("v$_",(7..11)); |
| 86 | |
| 87 | $code.=<<___; |
| 88 | .machine "any" |
| 89 | |
| 90 | .text |
| 91 | |
| 92 | .align 7 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 93 | Lrcon: |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 94 | .long 0x01000000, 0x01000000, 0x01000000, 0x01000000 ?rev |
| 95 | .long 0x1b000000, 0x1b000000, 0x1b000000, 0x1b000000 ?rev |
| 96 | .long 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c, 0x0d0e0f0c ?rev |
| 97 | .long 0,0,0,0 ?asis |
| 98 | Lconsts: |
| 99 | mflr r0 |
| 100 | bcl 20,31,\$+4 |
| 101 | mflr $ptr #vvvvv "distance between . and rcon |
| 102 | addi $ptr,$ptr,-0x48 |
| 103 | mtlr r0 |
| 104 | blr |
| 105 | .long 0 |
| 106 | .byte 0,12,0x14,0,0,0,0,0 |
| 107 | .asciz "AES for PowerISA 2.07, CRYPTOGAMS by <appro\@openssl.org>" |
| 108 | |
| 109 | .globl .${prefix}_set_encrypt_key |
| 110 | .align 5 |
| 111 | .${prefix}_set_encrypt_key: |
| 112 | Lset_encrypt_key: |
| 113 | mflr r11 |
| 114 | $PUSH r11,$LRSAVE($sp) |
| 115 | |
| 116 | li $ptr,-1 |
| 117 | ${UCMP}i $inp,0 |
| 118 | beq- Lenc_key_abort # if ($inp==0) return -1; |
| 119 | ${UCMP}i $out,0 |
| 120 | beq- Lenc_key_abort # if ($out==0) return -1; |
| 121 | li $ptr,-2 |
| 122 | cmpwi $bits,128 |
| 123 | blt- Lenc_key_abort |
| 124 | cmpwi $bits,256 |
| 125 | bgt- Lenc_key_abort |
| 126 | andi. r0,$bits,0x3f |
| 127 | bne- Lenc_key_abort |
| 128 | |
| 129 | lis r0,0xfff0 |
| 130 | mfspr $vrsave,256 |
| 131 | mtspr 256,r0 |
| 132 | |
| 133 | bl Lconsts |
| 134 | mtlr r11 |
| 135 | |
| 136 | neg r9,$inp |
| 137 | lvx $in0,0,$inp |
| 138 | addi $inp,$inp,15 # 15 is not typo |
| 139 | lvsr $key,0,r9 # borrow $key |
| 140 | li r8,0x20 |
| 141 | cmpwi $bits,192 |
| 142 | lvx $in1,0,$inp |
| 143 | le?vspltisb $mask,0x0f # borrow $mask |
| 144 | lvx $rcon,0,$ptr |
| 145 | le?vxor $key,$key,$mask # adjust for byte swap |
| 146 | lvx $mask,r8,$ptr |
| 147 | addi $ptr,$ptr,0x10 |
| 148 | vperm $in0,$in0,$in1,$key # align [and byte swap in LE] |
| 149 | li $cnt,8 |
| 150 | vxor $zero,$zero,$zero |
| 151 | mtctr $cnt |
| 152 | |
| 153 | ?lvsr $outperm,0,$out |
| 154 | vspltisb $outmask,-1 |
| 155 | lvx $outhead,0,$out |
| 156 | ?vperm $outmask,$zero,$outmask,$outperm |
| 157 | |
| 158 | blt Loop128 |
| 159 | addi $inp,$inp,8 |
| 160 | beq L192 |
| 161 | addi $inp,$inp,8 |
| 162 | b L256 |
| 163 | |
| 164 | .align 4 |
| 165 | Loop128: |
| 166 | vperm $key,$in0,$in0,$mask # rotate-n-splat |
| 167 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 168 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 169 | vsel $stage,$outhead,$outtail,$outmask |
| 170 | vmr $outhead,$outtail |
| 171 | vcipherlast $key,$key,$rcon |
| 172 | stvx $stage,0,$out |
| 173 | addi $out,$out,16 |
| 174 | |
| 175 | vxor $in0,$in0,$tmp |
| 176 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 177 | vxor $in0,$in0,$tmp |
| 178 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 179 | vxor $in0,$in0,$tmp |
| 180 | vadduwm $rcon,$rcon,$rcon |
| 181 | vxor $in0,$in0,$key |
| 182 | bdnz Loop128 |
| 183 | |
| 184 | lvx $rcon,0,$ptr # last two round keys |
| 185 | |
| 186 | vperm $key,$in0,$in0,$mask # rotate-n-splat |
| 187 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 188 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 189 | vsel $stage,$outhead,$outtail,$outmask |
| 190 | vmr $outhead,$outtail |
| 191 | vcipherlast $key,$key,$rcon |
| 192 | stvx $stage,0,$out |
| 193 | addi $out,$out,16 |
| 194 | |
| 195 | vxor $in0,$in0,$tmp |
| 196 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 197 | vxor $in0,$in0,$tmp |
| 198 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 199 | vxor $in0,$in0,$tmp |
| 200 | vadduwm $rcon,$rcon,$rcon |
| 201 | vxor $in0,$in0,$key |
| 202 | |
| 203 | vperm $key,$in0,$in0,$mask # rotate-n-splat |
| 204 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 205 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 206 | vsel $stage,$outhead,$outtail,$outmask |
| 207 | vmr $outhead,$outtail |
| 208 | vcipherlast $key,$key,$rcon |
| 209 | stvx $stage,0,$out |
| 210 | addi $out,$out,16 |
| 211 | |
| 212 | vxor $in0,$in0,$tmp |
| 213 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 214 | vxor $in0,$in0,$tmp |
| 215 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 216 | vxor $in0,$in0,$tmp |
| 217 | vxor $in0,$in0,$key |
| 218 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 219 | vsel $stage,$outhead,$outtail,$outmask |
| 220 | vmr $outhead,$outtail |
| 221 | stvx $stage,0,$out |
| 222 | |
| 223 | addi $inp,$out,15 # 15 is not typo |
| 224 | addi $out,$out,0x50 |
| 225 | |
| 226 | li $rounds,10 |
| 227 | b Ldone |
| 228 | |
| 229 | .align 4 |
| 230 | L192: |
| 231 | lvx $tmp,0,$inp |
| 232 | li $cnt,4 |
| 233 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 234 | vsel $stage,$outhead,$outtail,$outmask |
| 235 | vmr $outhead,$outtail |
| 236 | stvx $stage,0,$out |
| 237 | addi $out,$out,16 |
| 238 | vperm $in1,$in1,$tmp,$key # align [and byte swap in LE] |
| 239 | vspltisb $key,8 # borrow $key |
| 240 | mtctr $cnt |
| 241 | vsububm $mask,$mask,$key # adjust the mask |
| 242 | |
| 243 | Loop192: |
| 244 | vperm $key,$in1,$in1,$mask # roate-n-splat |
| 245 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 246 | vcipherlast $key,$key,$rcon |
| 247 | |
| 248 | vxor $in0,$in0,$tmp |
| 249 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 250 | vxor $in0,$in0,$tmp |
| 251 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 252 | vxor $in0,$in0,$tmp |
| 253 | |
| 254 | vsldoi $stage,$zero,$in1,8 |
| 255 | vspltw $tmp,$in0,3 |
| 256 | vxor $tmp,$tmp,$in1 |
| 257 | vsldoi $in1,$zero,$in1,12 # >>32 |
| 258 | vadduwm $rcon,$rcon,$rcon |
| 259 | vxor $in1,$in1,$tmp |
| 260 | vxor $in0,$in0,$key |
| 261 | vxor $in1,$in1,$key |
| 262 | vsldoi $stage,$stage,$in0,8 |
| 263 | |
| 264 | vperm $key,$in1,$in1,$mask # rotate-n-splat |
| 265 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 266 | vperm $outtail,$stage,$stage,$outperm # rotate |
| 267 | vsel $stage,$outhead,$outtail,$outmask |
| 268 | vmr $outhead,$outtail |
| 269 | vcipherlast $key,$key,$rcon |
| 270 | stvx $stage,0,$out |
| 271 | addi $out,$out,16 |
| 272 | |
| 273 | vsldoi $stage,$in0,$in1,8 |
| 274 | vxor $in0,$in0,$tmp |
| 275 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 276 | vperm $outtail,$stage,$stage,$outperm # rotate |
| 277 | vsel $stage,$outhead,$outtail,$outmask |
| 278 | vmr $outhead,$outtail |
| 279 | vxor $in0,$in0,$tmp |
| 280 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 281 | vxor $in0,$in0,$tmp |
| 282 | stvx $stage,0,$out |
| 283 | addi $out,$out,16 |
| 284 | |
| 285 | vspltw $tmp,$in0,3 |
| 286 | vxor $tmp,$tmp,$in1 |
| 287 | vsldoi $in1,$zero,$in1,12 # >>32 |
| 288 | vadduwm $rcon,$rcon,$rcon |
| 289 | vxor $in1,$in1,$tmp |
| 290 | vxor $in0,$in0,$key |
| 291 | vxor $in1,$in1,$key |
| 292 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 293 | vsel $stage,$outhead,$outtail,$outmask |
| 294 | vmr $outhead,$outtail |
| 295 | stvx $stage,0,$out |
| 296 | addi $inp,$out,15 # 15 is not typo |
| 297 | addi $out,$out,16 |
| 298 | bdnz Loop192 |
| 299 | |
| 300 | li $rounds,12 |
| 301 | addi $out,$out,0x20 |
| 302 | b Ldone |
| 303 | |
| 304 | .align 4 |
| 305 | L256: |
| 306 | lvx $tmp,0,$inp |
| 307 | li $cnt,7 |
| 308 | li $rounds,14 |
| 309 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 310 | vsel $stage,$outhead,$outtail,$outmask |
| 311 | vmr $outhead,$outtail |
| 312 | stvx $stage,0,$out |
| 313 | addi $out,$out,16 |
| 314 | vperm $in1,$in1,$tmp,$key # align [and byte swap in LE] |
| 315 | mtctr $cnt |
| 316 | |
| 317 | Loop256: |
| 318 | vperm $key,$in1,$in1,$mask # rotate-n-splat |
| 319 | vsldoi $tmp,$zero,$in0,12 # >>32 |
| 320 | vperm $outtail,$in1,$in1,$outperm # rotate |
| 321 | vsel $stage,$outhead,$outtail,$outmask |
| 322 | vmr $outhead,$outtail |
| 323 | vcipherlast $key,$key,$rcon |
| 324 | stvx $stage,0,$out |
| 325 | addi $out,$out,16 |
| 326 | |
| 327 | vxor $in0,$in0,$tmp |
| 328 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 329 | vxor $in0,$in0,$tmp |
| 330 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 331 | vxor $in0,$in0,$tmp |
| 332 | vadduwm $rcon,$rcon,$rcon |
| 333 | vxor $in0,$in0,$key |
| 334 | vperm $outtail,$in0,$in0,$outperm # rotate |
| 335 | vsel $stage,$outhead,$outtail,$outmask |
| 336 | vmr $outhead,$outtail |
| 337 | stvx $stage,0,$out |
| 338 | addi $inp,$out,15 # 15 is not typo |
| 339 | addi $out,$out,16 |
| 340 | bdz Ldone |
| 341 | |
| 342 | vspltw $key,$in0,3 # just splat |
| 343 | vsldoi $tmp,$zero,$in1,12 # >>32 |
| 344 | vsbox $key,$key |
| 345 | |
| 346 | vxor $in1,$in1,$tmp |
| 347 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 348 | vxor $in1,$in1,$tmp |
| 349 | vsldoi $tmp,$zero,$tmp,12 # >>32 |
| 350 | vxor $in1,$in1,$tmp |
| 351 | |
| 352 | vxor $in1,$in1,$key |
| 353 | b Loop256 |
| 354 | |
| 355 | .align 4 |
| 356 | Ldone: |
| 357 | lvx $in1,0,$inp # redundant in aligned case |
| 358 | vsel $in1,$outhead,$in1,$outmask |
| 359 | stvx $in1,0,$inp |
| 360 | li $ptr,0 |
| 361 | mtspr 256,$vrsave |
| 362 | stw $rounds,0($out) |
| 363 | |
| 364 | Lenc_key_abort: |
| 365 | mr r3,$ptr |
| 366 | blr |
| 367 | .long 0 |
| 368 | .byte 0,12,0x14,1,0,0,3,0 |
| 369 | .long 0 |
| 370 | .size .${prefix}_set_encrypt_key,.-.${prefix}_set_encrypt_key |
| 371 | |
| 372 | .globl .${prefix}_set_decrypt_key |
| 373 | .align 5 |
| 374 | .${prefix}_set_decrypt_key: |
| 375 | $STU $sp,-$FRAME($sp) |
| 376 | mflr r10 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 377 | $PUSH r10,`$FRAME+$LRSAVE`($sp) |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 378 | bl Lset_encrypt_key |
| 379 | mtlr r10 |
| 380 | |
| 381 | cmpwi r3,0 |
| 382 | bne- Ldec_key_abort |
| 383 | |
| 384 | slwi $cnt,$rounds,4 |
| 385 | subi $inp,$out,240 # first round key |
| 386 | srwi $rounds,$rounds,1 |
| 387 | add $out,$inp,$cnt # last round key |
| 388 | mtctr $rounds |
| 389 | |
| 390 | Ldeckey: |
| 391 | lwz r0, 0($inp) |
| 392 | lwz r6, 4($inp) |
| 393 | lwz r7, 8($inp) |
| 394 | lwz r8, 12($inp) |
| 395 | addi $inp,$inp,16 |
| 396 | lwz r9, 0($out) |
| 397 | lwz r10,4($out) |
| 398 | lwz r11,8($out) |
| 399 | lwz r12,12($out) |
| 400 | stw r0, 0($out) |
| 401 | stw r6, 4($out) |
| 402 | stw r7, 8($out) |
| 403 | stw r8, 12($out) |
| 404 | subi $out,$out,16 |
| 405 | stw r9, -16($inp) |
| 406 | stw r10,-12($inp) |
| 407 | stw r11,-8($inp) |
| 408 | stw r12,-4($inp) |
| 409 | bdnz Ldeckey |
| 410 | |
| 411 | xor r3,r3,r3 # return value |
| 412 | Ldec_key_abort: |
| 413 | addi $sp,$sp,$FRAME |
| 414 | blr |
| 415 | .long 0 |
| 416 | .byte 0,12,4,1,0x80,0,3,0 |
| 417 | .long 0 |
| 418 | .size .${prefix}_set_decrypt_key,.-.${prefix}_set_decrypt_key |
| 419 | ___ |
| 420 | }}} |
| 421 | ######################################################################### |
| 422 | {{{ # Single block en- and decrypt procedures # |
| 423 | sub gen_block () { |
| 424 | my $dir = shift; |
| 425 | my $n = $dir eq "de" ? "n" : ""; |
| 426 | my ($inp,$out,$key,$rounds,$idx)=map("r$_",(3..7)); |
| 427 | |
| 428 | $code.=<<___; |
| 429 | .globl .${prefix}_${dir}crypt |
| 430 | .align 5 |
| 431 | .${prefix}_${dir}crypt: |
| 432 | lwz $rounds,240($key) |
| 433 | lis r0,0xfc00 |
| 434 | mfspr $vrsave,256 |
| 435 | li $idx,15 # 15 is not typo |
| 436 | mtspr 256,r0 |
| 437 | |
| 438 | lvx v0,0,$inp |
| 439 | neg r11,$out |
| 440 | lvx v1,$idx,$inp |
| 441 | lvsl v2,0,$inp # inpperm |
| 442 | le?vspltisb v4,0x0f |
| 443 | ?lvsl v3,0,r11 # outperm |
| 444 | le?vxor v2,v2,v4 |
| 445 | li $idx,16 |
| 446 | vperm v0,v0,v1,v2 # align [and byte swap in LE] |
| 447 | lvx v1,0,$key |
| 448 | ?lvsl v5,0,$key # keyperm |
| 449 | srwi $rounds,$rounds,1 |
| 450 | lvx v2,$idx,$key |
| 451 | addi $idx,$idx,16 |
| 452 | subi $rounds,$rounds,1 |
| 453 | ?vperm v1,v1,v2,v5 # align round key |
| 454 | |
| 455 | vxor v0,v0,v1 |
| 456 | lvx v1,$idx,$key |
| 457 | addi $idx,$idx,16 |
| 458 | mtctr $rounds |
| 459 | |
| 460 | Loop_${dir}c: |
| 461 | ?vperm v2,v2,v1,v5 |
| 462 | v${n}cipher v0,v0,v2 |
| 463 | lvx v2,$idx,$key |
| 464 | addi $idx,$idx,16 |
| 465 | ?vperm v1,v1,v2,v5 |
| 466 | v${n}cipher v0,v0,v1 |
| 467 | lvx v1,$idx,$key |
| 468 | addi $idx,$idx,16 |
| 469 | bdnz Loop_${dir}c |
| 470 | |
| 471 | ?vperm v2,v2,v1,v5 |
| 472 | v${n}cipher v0,v0,v2 |
| 473 | lvx v2,$idx,$key |
| 474 | ?vperm v1,v1,v2,v5 |
| 475 | v${n}cipherlast v0,v0,v1 |
| 476 | |
| 477 | vspltisb v2,-1 |
| 478 | vxor v1,v1,v1 |
| 479 | li $idx,15 # 15 is not typo |
| 480 | ?vperm v2,v1,v2,v3 # outmask |
| 481 | le?vxor v3,v3,v4 |
| 482 | lvx v1,0,$out # outhead |
| 483 | vperm v0,v0,v0,v3 # rotate [and byte swap in LE] |
| 484 | vsel v1,v1,v0,v2 |
| 485 | lvx v4,$idx,$out |
| 486 | stvx v1,0,$out |
| 487 | vsel v0,v0,v4,v2 |
| 488 | stvx v0,$idx,$out |
| 489 | |
| 490 | mtspr 256,$vrsave |
| 491 | blr |
| 492 | .long 0 |
| 493 | .byte 0,12,0x14,0,0,0,3,0 |
| 494 | .long 0 |
| 495 | .size .${prefix}_${dir}crypt,.-.${prefix}_${dir}crypt |
| 496 | ___ |
| 497 | } |
| 498 | &gen_block("en"); |
| 499 | &gen_block("de"); |
| 500 | }}} |
| 501 | ######################################################################### |
| 502 | {{{ # CBC en- and decrypt procedures # |
| 503 | my ($inp,$out,$len,$key,$ivp,$enc,$rounds,$idx)=map("r$_",(3..10)); |
| 504 | my ($rndkey0,$rndkey1,$inout,$tmp)= map("v$_",(0..3)); |
| 505 | my ($ivec,$inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm)= |
| 506 | map("v$_",(4..10)); |
| 507 | $code.=<<___; |
| 508 | .globl .${prefix}_cbc_encrypt |
| 509 | .align 5 |
| 510 | .${prefix}_cbc_encrypt: |
| 511 | ${UCMP}i $len,16 |
| 512 | bltlr- |
| 513 | |
| 514 | cmpwi $enc,0 # test direction |
| 515 | lis r0,0xffe0 |
| 516 | mfspr $vrsave,256 |
| 517 | mtspr 256,r0 |
| 518 | |
| 519 | li $idx,15 |
| 520 | vxor $rndkey0,$rndkey0,$rndkey0 |
| 521 | le?vspltisb $tmp,0x0f |
| 522 | |
| 523 | lvx $ivec,0,$ivp # load [unaligned] iv |
| 524 | lvsl $inpperm,0,$ivp |
| 525 | lvx $inptail,$idx,$ivp |
| 526 | le?vxor $inpperm,$inpperm,$tmp |
| 527 | vperm $ivec,$ivec,$inptail,$inpperm |
| 528 | |
| 529 | neg r11,$inp |
| 530 | ?lvsl $keyperm,0,$key # prepare for unaligned key |
| 531 | lwz $rounds,240($key) |
| 532 | |
| 533 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 534 | lvx $inptail,0,$inp |
| 535 | addi $inp,$inp,15 # 15 is not typo |
| 536 | le?vxor $inpperm,$inpperm,$tmp |
| 537 | |
| 538 | ?lvsr $outperm,0,$out # prepare for unaligned store |
| 539 | vspltisb $outmask,-1 |
| 540 | lvx $outhead,0,$out |
| 541 | ?vperm $outmask,$rndkey0,$outmask,$outperm |
| 542 | le?vxor $outperm,$outperm,$tmp |
| 543 | |
| 544 | srwi $rounds,$rounds,1 |
| 545 | li $idx,16 |
| 546 | subi $rounds,$rounds,1 |
| 547 | beq Lcbc_dec |
| 548 | |
| 549 | Lcbc_enc: |
| 550 | vmr $inout,$inptail |
| 551 | lvx $inptail,0,$inp |
| 552 | addi $inp,$inp,16 |
| 553 | mtctr $rounds |
| 554 | subi $len,$len,16 # len-=16 |
| 555 | |
| 556 | lvx $rndkey0,0,$key |
| 557 | vperm $inout,$inout,$inptail,$inpperm |
| 558 | lvx $rndkey1,$idx,$key |
| 559 | addi $idx,$idx,16 |
| 560 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 561 | vxor $inout,$inout,$rndkey0 |
| 562 | lvx $rndkey0,$idx,$key |
| 563 | addi $idx,$idx,16 |
| 564 | vxor $inout,$inout,$ivec |
| 565 | |
| 566 | Loop_cbc_enc: |
| 567 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 568 | vcipher $inout,$inout,$rndkey1 |
| 569 | lvx $rndkey1,$idx,$key |
| 570 | addi $idx,$idx,16 |
| 571 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 572 | vcipher $inout,$inout,$rndkey0 |
| 573 | lvx $rndkey0,$idx,$key |
| 574 | addi $idx,$idx,16 |
| 575 | bdnz Loop_cbc_enc |
| 576 | |
| 577 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 578 | vcipher $inout,$inout,$rndkey1 |
| 579 | lvx $rndkey1,$idx,$key |
| 580 | li $idx,16 |
| 581 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 582 | vcipherlast $ivec,$inout,$rndkey0 |
| 583 | ${UCMP}i $len,16 |
| 584 | |
| 585 | vperm $tmp,$ivec,$ivec,$outperm |
| 586 | vsel $inout,$outhead,$tmp,$outmask |
| 587 | vmr $outhead,$tmp |
| 588 | stvx $inout,0,$out |
| 589 | addi $out,$out,16 |
| 590 | bge Lcbc_enc |
| 591 | |
| 592 | b Lcbc_done |
| 593 | |
| 594 | .align 4 |
| 595 | Lcbc_dec: |
| 596 | ${UCMP}i $len,128 |
| 597 | bge _aesp8_cbc_decrypt8x |
| 598 | vmr $tmp,$inptail |
| 599 | lvx $inptail,0,$inp |
| 600 | addi $inp,$inp,16 |
| 601 | mtctr $rounds |
| 602 | subi $len,$len,16 # len-=16 |
| 603 | |
| 604 | lvx $rndkey0,0,$key |
| 605 | vperm $tmp,$tmp,$inptail,$inpperm |
| 606 | lvx $rndkey1,$idx,$key |
| 607 | addi $idx,$idx,16 |
| 608 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 609 | vxor $inout,$tmp,$rndkey0 |
| 610 | lvx $rndkey0,$idx,$key |
| 611 | addi $idx,$idx,16 |
| 612 | |
| 613 | Loop_cbc_dec: |
| 614 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 615 | vncipher $inout,$inout,$rndkey1 |
| 616 | lvx $rndkey1,$idx,$key |
| 617 | addi $idx,$idx,16 |
| 618 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 619 | vncipher $inout,$inout,$rndkey0 |
| 620 | lvx $rndkey0,$idx,$key |
| 621 | addi $idx,$idx,16 |
| 622 | bdnz Loop_cbc_dec |
| 623 | |
| 624 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 625 | vncipher $inout,$inout,$rndkey1 |
| 626 | lvx $rndkey1,$idx,$key |
| 627 | li $idx,16 |
| 628 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 629 | vncipherlast $inout,$inout,$rndkey0 |
| 630 | ${UCMP}i $len,16 |
| 631 | |
| 632 | vxor $inout,$inout,$ivec |
| 633 | vmr $ivec,$tmp |
| 634 | vperm $tmp,$inout,$inout,$outperm |
| 635 | vsel $inout,$outhead,$tmp,$outmask |
| 636 | vmr $outhead,$tmp |
| 637 | stvx $inout,0,$out |
| 638 | addi $out,$out,16 |
| 639 | bge Lcbc_dec |
| 640 | |
| 641 | Lcbc_done: |
| 642 | addi $out,$out,-1 |
| 643 | lvx $inout,0,$out # redundant in aligned case |
| 644 | vsel $inout,$outhead,$inout,$outmask |
| 645 | stvx $inout,0,$out |
| 646 | |
| 647 | neg $enc,$ivp # write [unaligned] iv |
| 648 | li $idx,15 # 15 is not typo |
| 649 | vxor $rndkey0,$rndkey0,$rndkey0 |
| 650 | vspltisb $outmask,-1 |
| 651 | le?vspltisb $tmp,0x0f |
| 652 | ?lvsl $outperm,0,$enc |
| 653 | ?vperm $outmask,$rndkey0,$outmask,$outperm |
| 654 | le?vxor $outperm,$outperm,$tmp |
| 655 | lvx $outhead,0,$ivp |
| 656 | vperm $ivec,$ivec,$ivec,$outperm |
| 657 | vsel $inout,$outhead,$ivec,$outmask |
| 658 | lvx $inptail,$idx,$ivp |
| 659 | stvx $inout,0,$ivp |
| 660 | vsel $inout,$ivec,$inptail,$outmask |
| 661 | stvx $inout,$idx,$ivp |
| 662 | |
| 663 | mtspr 256,$vrsave |
| 664 | blr |
| 665 | .long 0 |
| 666 | .byte 0,12,0x14,0,0,0,6,0 |
| 667 | .long 0 |
| 668 | ___ |
| 669 | ######################################################################### |
| 670 | {{ # Optimized CBC decrypt procedure # |
| 671 | my $key_="r11"; |
| 672 | my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,8,26..31)); |
| 673 | $x00=0 if ($flavour =~ /osx/); |
| 674 | my ($in0, $in1, $in2, $in3, $in4, $in5, $in6, $in7 )=map("v$_",(0..3,10..13)); |
| 675 | my ($out0,$out1,$out2,$out3,$out4,$out5,$out6,$out7)=map("v$_",(14..21)); |
| 676 | my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys |
| 677 | # v26-v31 last 6 round keys |
| 678 | my ($tmp,$keyperm)=($in3,$in4); # aliases with "caller", redundant assignment |
| 679 | |
| 680 | $code.=<<___; |
| 681 | .align 5 |
| 682 | _aesp8_cbc_decrypt8x: |
| 683 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 684 | li r10,`$FRAME+8*16+15` |
| 685 | li r11,`$FRAME+8*16+31` |
| 686 | stvx v20,r10,$sp # ABI says so |
| 687 | addi r10,r10,32 |
| 688 | stvx v21,r11,$sp |
| 689 | addi r11,r11,32 |
| 690 | stvx v22,r10,$sp |
| 691 | addi r10,r10,32 |
| 692 | stvx v23,r11,$sp |
| 693 | addi r11,r11,32 |
| 694 | stvx v24,r10,$sp |
| 695 | addi r10,r10,32 |
| 696 | stvx v25,r11,$sp |
| 697 | addi r11,r11,32 |
| 698 | stvx v26,r10,$sp |
| 699 | addi r10,r10,32 |
| 700 | stvx v27,r11,$sp |
| 701 | addi r11,r11,32 |
| 702 | stvx v28,r10,$sp |
| 703 | addi r10,r10,32 |
| 704 | stvx v29,r11,$sp |
| 705 | addi r11,r11,32 |
| 706 | stvx v30,r10,$sp |
| 707 | stvx v31,r11,$sp |
| 708 | li r0,-1 |
| 709 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 710 | li $x10,0x10 |
| 711 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 712 | li $x20,0x20 |
| 713 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 714 | li $x30,0x30 |
| 715 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 716 | li $x40,0x40 |
| 717 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 718 | li $x50,0x50 |
| 719 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 720 | li $x60,0x60 |
| 721 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 722 | li $x70,0x70 |
| 723 | mtspr 256,r0 |
| 724 | |
| 725 | subi $rounds,$rounds,3 # -4 in total |
| 726 | subi $len,$len,128 # bias |
| 727 | |
| 728 | lvx $rndkey0,$x00,$key # load key schedule |
| 729 | lvx v30,$x10,$key |
| 730 | addi $key,$key,0x20 |
| 731 | lvx v31,$x00,$key |
| 732 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 733 | addi $key_,$sp,`$FRAME+15` |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 734 | mtctr $rounds |
| 735 | |
| 736 | Load_cbc_dec_key: |
| 737 | ?vperm v24,v30,v31,$keyperm |
| 738 | lvx v30,$x10,$key |
| 739 | addi $key,$key,0x20 |
| 740 | stvx v24,$x00,$key_ # off-load round[1] |
| 741 | ?vperm v25,v31,v30,$keyperm |
| 742 | lvx v31,$x00,$key |
| 743 | stvx v25,$x10,$key_ # off-load round[2] |
| 744 | addi $key_,$key_,0x20 |
| 745 | bdnz Load_cbc_dec_key |
| 746 | |
| 747 | lvx v26,$x10,$key |
| 748 | ?vperm v24,v30,v31,$keyperm |
| 749 | lvx v27,$x20,$key |
| 750 | stvx v24,$x00,$key_ # off-load round[3] |
| 751 | ?vperm v25,v31,v26,$keyperm |
| 752 | lvx v28,$x30,$key |
| 753 | stvx v25,$x10,$key_ # off-load round[4] |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 754 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 755 | ?vperm v26,v26,v27,$keyperm |
| 756 | lvx v29,$x40,$key |
| 757 | ?vperm v27,v27,v28,$keyperm |
| 758 | lvx v30,$x50,$key |
| 759 | ?vperm v28,v28,v29,$keyperm |
| 760 | lvx v31,$x60,$key |
| 761 | ?vperm v29,v29,v30,$keyperm |
| 762 | lvx $out0,$x70,$key # borrow $out0 |
| 763 | ?vperm v30,v30,v31,$keyperm |
| 764 | lvx v24,$x00,$key_ # pre-load round[1] |
| 765 | ?vperm v31,v31,$out0,$keyperm |
| 766 | lvx v25,$x10,$key_ # pre-load round[2] |
| 767 | |
| 768 | #lvx $inptail,0,$inp # "caller" already did this |
| 769 | #addi $inp,$inp,15 # 15 is not typo |
| 770 | subi $inp,$inp,15 # undo "caller" |
| 771 | |
| 772 | le?li $idx,8 |
| 773 | lvx_u $in0,$x00,$inp # load first 8 "words" |
| 774 | le?lvsl $inpperm,0,$idx |
| 775 | le?vspltisb $tmp,0x0f |
| 776 | lvx_u $in1,$x10,$inp |
| 777 | le?vxor $inpperm,$inpperm,$tmp # transform for lvx_u/stvx_u |
| 778 | lvx_u $in2,$x20,$inp |
| 779 | le?vperm $in0,$in0,$in0,$inpperm |
| 780 | lvx_u $in3,$x30,$inp |
| 781 | le?vperm $in1,$in1,$in1,$inpperm |
| 782 | lvx_u $in4,$x40,$inp |
| 783 | le?vperm $in2,$in2,$in2,$inpperm |
| 784 | vxor $out0,$in0,$rndkey0 |
| 785 | lvx_u $in5,$x50,$inp |
| 786 | le?vperm $in3,$in3,$in3,$inpperm |
| 787 | vxor $out1,$in1,$rndkey0 |
| 788 | lvx_u $in6,$x60,$inp |
| 789 | le?vperm $in4,$in4,$in4,$inpperm |
| 790 | vxor $out2,$in2,$rndkey0 |
| 791 | lvx_u $in7,$x70,$inp |
| 792 | addi $inp,$inp,0x80 |
| 793 | le?vperm $in5,$in5,$in5,$inpperm |
| 794 | vxor $out3,$in3,$rndkey0 |
| 795 | le?vperm $in6,$in6,$in6,$inpperm |
| 796 | vxor $out4,$in4,$rndkey0 |
| 797 | le?vperm $in7,$in7,$in7,$inpperm |
| 798 | vxor $out5,$in5,$rndkey0 |
| 799 | vxor $out6,$in6,$rndkey0 |
| 800 | vxor $out7,$in7,$rndkey0 |
| 801 | |
| 802 | mtctr $rounds |
| 803 | b Loop_cbc_dec8x |
| 804 | .align 5 |
| 805 | Loop_cbc_dec8x: |
| 806 | vncipher $out0,$out0,v24 |
| 807 | vncipher $out1,$out1,v24 |
| 808 | vncipher $out2,$out2,v24 |
| 809 | vncipher $out3,$out3,v24 |
| 810 | vncipher $out4,$out4,v24 |
| 811 | vncipher $out5,$out5,v24 |
| 812 | vncipher $out6,$out6,v24 |
| 813 | vncipher $out7,$out7,v24 |
| 814 | lvx v24,$x20,$key_ # round[3] |
| 815 | addi $key_,$key_,0x20 |
| 816 | |
| 817 | vncipher $out0,$out0,v25 |
| 818 | vncipher $out1,$out1,v25 |
| 819 | vncipher $out2,$out2,v25 |
| 820 | vncipher $out3,$out3,v25 |
| 821 | vncipher $out4,$out4,v25 |
| 822 | vncipher $out5,$out5,v25 |
| 823 | vncipher $out6,$out6,v25 |
| 824 | vncipher $out7,$out7,v25 |
| 825 | lvx v25,$x10,$key_ # round[4] |
| 826 | bdnz Loop_cbc_dec8x |
| 827 | |
| 828 | subic $len,$len,128 # $len-=128 |
| 829 | vncipher $out0,$out0,v24 |
| 830 | vncipher $out1,$out1,v24 |
| 831 | vncipher $out2,$out2,v24 |
| 832 | vncipher $out3,$out3,v24 |
| 833 | vncipher $out4,$out4,v24 |
| 834 | vncipher $out5,$out5,v24 |
| 835 | vncipher $out6,$out6,v24 |
| 836 | vncipher $out7,$out7,v24 |
| 837 | |
| 838 | subfe. r0,r0,r0 # borrow?-1:0 |
| 839 | vncipher $out0,$out0,v25 |
| 840 | vncipher $out1,$out1,v25 |
| 841 | vncipher $out2,$out2,v25 |
| 842 | vncipher $out3,$out3,v25 |
| 843 | vncipher $out4,$out4,v25 |
| 844 | vncipher $out5,$out5,v25 |
| 845 | vncipher $out6,$out6,v25 |
| 846 | vncipher $out7,$out7,v25 |
| 847 | |
| 848 | and r0,r0,$len |
| 849 | vncipher $out0,$out0,v26 |
| 850 | vncipher $out1,$out1,v26 |
| 851 | vncipher $out2,$out2,v26 |
| 852 | vncipher $out3,$out3,v26 |
| 853 | vncipher $out4,$out4,v26 |
| 854 | vncipher $out5,$out5,v26 |
| 855 | vncipher $out6,$out6,v26 |
| 856 | vncipher $out7,$out7,v26 |
| 857 | |
| 858 | add $inp,$inp,r0 # $inp is adjusted in such |
| 859 | # way that at exit from the |
| 860 | # loop inX-in7 are loaded |
| 861 | # with last "words" |
| 862 | vncipher $out0,$out0,v27 |
| 863 | vncipher $out1,$out1,v27 |
| 864 | vncipher $out2,$out2,v27 |
| 865 | vncipher $out3,$out3,v27 |
| 866 | vncipher $out4,$out4,v27 |
| 867 | vncipher $out5,$out5,v27 |
| 868 | vncipher $out6,$out6,v27 |
| 869 | vncipher $out7,$out7,v27 |
| 870 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 871 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 872 | vncipher $out0,$out0,v28 |
| 873 | vncipher $out1,$out1,v28 |
| 874 | vncipher $out2,$out2,v28 |
| 875 | vncipher $out3,$out3,v28 |
| 876 | vncipher $out4,$out4,v28 |
| 877 | vncipher $out5,$out5,v28 |
| 878 | vncipher $out6,$out6,v28 |
| 879 | vncipher $out7,$out7,v28 |
| 880 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 881 | |
| 882 | vncipher $out0,$out0,v29 |
| 883 | vncipher $out1,$out1,v29 |
| 884 | vncipher $out2,$out2,v29 |
| 885 | vncipher $out3,$out3,v29 |
| 886 | vncipher $out4,$out4,v29 |
| 887 | vncipher $out5,$out5,v29 |
| 888 | vncipher $out6,$out6,v29 |
| 889 | vncipher $out7,$out7,v29 |
| 890 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 891 | |
| 892 | vncipher $out0,$out0,v30 |
| 893 | vxor $ivec,$ivec,v31 # xor with last round key |
| 894 | vncipher $out1,$out1,v30 |
| 895 | vxor $in0,$in0,v31 |
| 896 | vncipher $out2,$out2,v30 |
| 897 | vxor $in1,$in1,v31 |
| 898 | vncipher $out3,$out3,v30 |
| 899 | vxor $in2,$in2,v31 |
| 900 | vncipher $out4,$out4,v30 |
| 901 | vxor $in3,$in3,v31 |
| 902 | vncipher $out5,$out5,v30 |
| 903 | vxor $in4,$in4,v31 |
| 904 | vncipher $out6,$out6,v30 |
| 905 | vxor $in5,$in5,v31 |
| 906 | vncipher $out7,$out7,v30 |
| 907 | vxor $in6,$in6,v31 |
| 908 | |
| 909 | vncipherlast $out0,$out0,$ivec |
| 910 | vncipherlast $out1,$out1,$in0 |
| 911 | lvx_u $in0,$x00,$inp # load next input block |
| 912 | vncipherlast $out2,$out2,$in1 |
| 913 | lvx_u $in1,$x10,$inp |
| 914 | vncipherlast $out3,$out3,$in2 |
| 915 | le?vperm $in0,$in0,$in0,$inpperm |
| 916 | lvx_u $in2,$x20,$inp |
| 917 | vncipherlast $out4,$out4,$in3 |
| 918 | le?vperm $in1,$in1,$in1,$inpperm |
| 919 | lvx_u $in3,$x30,$inp |
| 920 | vncipherlast $out5,$out5,$in4 |
| 921 | le?vperm $in2,$in2,$in2,$inpperm |
| 922 | lvx_u $in4,$x40,$inp |
| 923 | vncipherlast $out6,$out6,$in5 |
| 924 | le?vperm $in3,$in3,$in3,$inpperm |
| 925 | lvx_u $in5,$x50,$inp |
| 926 | vncipherlast $out7,$out7,$in6 |
| 927 | le?vperm $in4,$in4,$in4,$inpperm |
| 928 | lvx_u $in6,$x60,$inp |
| 929 | vmr $ivec,$in7 |
| 930 | le?vperm $in5,$in5,$in5,$inpperm |
| 931 | lvx_u $in7,$x70,$inp |
| 932 | addi $inp,$inp,0x80 |
| 933 | |
| 934 | le?vperm $out0,$out0,$out0,$inpperm |
| 935 | le?vperm $out1,$out1,$out1,$inpperm |
| 936 | stvx_u $out0,$x00,$out |
| 937 | le?vperm $in6,$in6,$in6,$inpperm |
| 938 | vxor $out0,$in0,$rndkey0 |
| 939 | le?vperm $out2,$out2,$out2,$inpperm |
| 940 | stvx_u $out1,$x10,$out |
| 941 | le?vperm $in7,$in7,$in7,$inpperm |
| 942 | vxor $out1,$in1,$rndkey0 |
| 943 | le?vperm $out3,$out3,$out3,$inpperm |
| 944 | stvx_u $out2,$x20,$out |
| 945 | vxor $out2,$in2,$rndkey0 |
| 946 | le?vperm $out4,$out4,$out4,$inpperm |
| 947 | stvx_u $out3,$x30,$out |
| 948 | vxor $out3,$in3,$rndkey0 |
| 949 | le?vperm $out5,$out5,$out5,$inpperm |
| 950 | stvx_u $out4,$x40,$out |
| 951 | vxor $out4,$in4,$rndkey0 |
| 952 | le?vperm $out6,$out6,$out6,$inpperm |
| 953 | stvx_u $out5,$x50,$out |
| 954 | vxor $out5,$in5,$rndkey0 |
| 955 | le?vperm $out7,$out7,$out7,$inpperm |
| 956 | stvx_u $out6,$x60,$out |
| 957 | vxor $out6,$in6,$rndkey0 |
| 958 | stvx_u $out7,$x70,$out |
| 959 | addi $out,$out,0x80 |
| 960 | vxor $out7,$in7,$rndkey0 |
| 961 | |
| 962 | mtctr $rounds |
| 963 | beq Loop_cbc_dec8x # did $len-=128 borrow? |
| 964 | |
| 965 | addic. $len,$len,128 |
| 966 | beq Lcbc_dec8x_done |
| 967 | nop |
| 968 | nop |
| 969 | |
| 970 | Loop_cbc_dec8x_tail: # up to 7 "words" tail... |
| 971 | vncipher $out1,$out1,v24 |
| 972 | vncipher $out2,$out2,v24 |
| 973 | vncipher $out3,$out3,v24 |
| 974 | vncipher $out4,$out4,v24 |
| 975 | vncipher $out5,$out5,v24 |
| 976 | vncipher $out6,$out6,v24 |
| 977 | vncipher $out7,$out7,v24 |
| 978 | lvx v24,$x20,$key_ # round[3] |
| 979 | addi $key_,$key_,0x20 |
| 980 | |
| 981 | vncipher $out1,$out1,v25 |
| 982 | vncipher $out2,$out2,v25 |
| 983 | vncipher $out3,$out3,v25 |
| 984 | vncipher $out4,$out4,v25 |
| 985 | vncipher $out5,$out5,v25 |
| 986 | vncipher $out6,$out6,v25 |
| 987 | vncipher $out7,$out7,v25 |
| 988 | lvx v25,$x10,$key_ # round[4] |
| 989 | bdnz Loop_cbc_dec8x_tail |
| 990 | |
| 991 | vncipher $out1,$out1,v24 |
| 992 | vncipher $out2,$out2,v24 |
| 993 | vncipher $out3,$out3,v24 |
| 994 | vncipher $out4,$out4,v24 |
| 995 | vncipher $out5,$out5,v24 |
| 996 | vncipher $out6,$out6,v24 |
| 997 | vncipher $out7,$out7,v24 |
| 998 | |
| 999 | vncipher $out1,$out1,v25 |
| 1000 | vncipher $out2,$out2,v25 |
| 1001 | vncipher $out3,$out3,v25 |
| 1002 | vncipher $out4,$out4,v25 |
| 1003 | vncipher $out5,$out5,v25 |
| 1004 | vncipher $out6,$out6,v25 |
| 1005 | vncipher $out7,$out7,v25 |
| 1006 | |
| 1007 | vncipher $out1,$out1,v26 |
| 1008 | vncipher $out2,$out2,v26 |
| 1009 | vncipher $out3,$out3,v26 |
| 1010 | vncipher $out4,$out4,v26 |
| 1011 | vncipher $out5,$out5,v26 |
| 1012 | vncipher $out6,$out6,v26 |
| 1013 | vncipher $out7,$out7,v26 |
| 1014 | |
| 1015 | vncipher $out1,$out1,v27 |
| 1016 | vncipher $out2,$out2,v27 |
| 1017 | vncipher $out3,$out3,v27 |
| 1018 | vncipher $out4,$out4,v27 |
| 1019 | vncipher $out5,$out5,v27 |
| 1020 | vncipher $out6,$out6,v27 |
| 1021 | vncipher $out7,$out7,v27 |
| 1022 | |
| 1023 | vncipher $out1,$out1,v28 |
| 1024 | vncipher $out2,$out2,v28 |
| 1025 | vncipher $out3,$out3,v28 |
| 1026 | vncipher $out4,$out4,v28 |
| 1027 | vncipher $out5,$out5,v28 |
| 1028 | vncipher $out6,$out6,v28 |
| 1029 | vncipher $out7,$out7,v28 |
| 1030 | |
| 1031 | vncipher $out1,$out1,v29 |
| 1032 | vncipher $out2,$out2,v29 |
| 1033 | vncipher $out3,$out3,v29 |
| 1034 | vncipher $out4,$out4,v29 |
| 1035 | vncipher $out5,$out5,v29 |
| 1036 | vncipher $out6,$out6,v29 |
| 1037 | vncipher $out7,$out7,v29 |
| 1038 | |
| 1039 | vncipher $out1,$out1,v30 |
| 1040 | vxor $ivec,$ivec,v31 # last round key |
| 1041 | vncipher $out2,$out2,v30 |
| 1042 | vxor $in1,$in1,v31 |
| 1043 | vncipher $out3,$out3,v30 |
| 1044 | vxor $in2,$in2,v31 |
| 1045 | vncipher $out4,$out4,v30 |
| 1046 | vxor $in3,$in3,v31 |
| 1047 | vncipher $out5,$out5,v30 |
| 1048 | vxor $in4,$in4,v31 |
| 1049 | vncipher $out6,$out6,v30 |
| 1050 | vxor $in5,$in5,v31 |
| 1051 | vncipher $out7,$out7,v30 |
| 1052 | vxor $in6,$in6,v31 |
| 1053 | |
| 1054 | cmplwi $len,32 # switch($len) |
| 1055 | blt Lcbc_dec8x_one |
| 1056 | nop |
| 1057 | beq Lcbc_dec8x_two |
| 1058 | cmplwi $len,64 |
| 1059 | blt Lcbc_dec8x_three |
| 1060 | nop |
| 1061 | beq Lcbc_dec8x_four |
| 1062 | cmplwi $len,96 |
| 1063 | blt Lcbc_dec8x_five |
| 1064 | nop |
| 1065 | beq Lcbc_dec8x_six |
| 1066 | |
| 1067 | Lcbc_dec8x_seven: |
| 1068 | vncipherlast $out1,$out1,$ivec |
| 1069 | vncipherlast $out2,$out2,$in1 |
| 1070 | vncipherlast $out3,$out3,$in2 |
| 1071 | vncipherlast $out4,$out4,$in3 |
| 1072 | vncipherlast $out5,$out5,$in4 |
| 1073 | vncipherlast $out6,$out6,$in5 |
| 1074 | vncipherlast $out7,$out7,$in6 |
| 1075 | vmr $ivec,$in7 |
| 1076 | |
| 1077 | le?vperm $out1,$out1,$out1,$inpperm |
| 1078 | le?vperm $out2,$out2,$out2,$inpperm |
| 1079 | stvx_u $out1,$x00,$out |
| 1080 | le?vperm $out3,$out3,$out3,$inpperm |
| 1081 | stvx_u $out2,$x10,$out |
| 1082 | le?vperm $out4,$out4,$out4,$inpperm |
| 1083 | stvx_u $out3,$x20,$out |
| 1084 | le?vperm $out5,$out5,$out5,$inpperm |
| 1085 | stvx_u $out4,$x30,$out |
| 1086 | le?vperm $out6,$out6,$out6,$inpperm |
| 1087 | stvx_u $out5,$x40,$out |
| 1088 | le?vperm $out7,$out7,$out7,$inpperm |
| 1089 | stvx_u $out6,$x50,$out |
| 1090 | stvx_u $out7,$x60,$out |
| 1091 | addi $out,$out,0x70 |
| 1092 | b Lcbc_dec8x_done |
| 1093 | |
| 1094 | .align 5 |
| 1095 | Lcbc_dec8x_six: |
| 1096 | vncipherlast $out2,$out2,$ivec |
| 1097 | vncipherlast $out3,$out3,$in2 |
| 1098 | vncipherlast $out4,$out4,$in3 |
| 1099 | vncipherlast $out5,$out5,$in4 |
| 1100 | vncipherlast $out6,$out6,$in5 |
| 1101 | vncipherlast $out7,$out7,$in6 |
| 1102 | vmr $ivec,$in7 |
| 1103 | |
| 1104 | le?vperm $out2,$out2,$out2,$inpperm |
| 1105 | le?vperm $out3,$out3,$out3,$inpperm |
| 1106 | stvx_u $out2,$x00,$out |
| 1107 | le?vperm $out4,$out4,$out4,$inpperm |
| 1108 | stvx_u $out3,$x10,$out |
| 1109 | le?vperm $out5,$out5,$out5,$inpperm |
| 1110 | stvx_u $out4,$x20,$out |
| 1111 | le?vperm $out6,$out6,$out6,$inpperm |
| 1112 | stvx_u $out5,$x30,$out |
| 1113 | le?vperm $out7,$out7,$out7,$inpperm |
| 1114 | stvx_u $out6,$x40,$out |
| 1115 | stvx_u $out7,$x50,$out |
| 1116 | addi $out,$out,0x60 |
| 1117 | b Lcbc_dec8x_done |
| 1118 | |
| 1119 | .align 5 |
| 1120 | Lcbc_dec8x_five: |
| 1121 | vncipherlast $out3,$out3,$ivec |
| 1122 | vncipherlast $out4,$out4,$in3 |
| 1123 | vncipherlast $out5,$out5,$in4 |
| 1124 | vncipherlast $out6,$out6,$in5 |
| 1125 | vncipherlast $out7,$out7,$in6 |
| 1126 | vmr $ivec,$in7 |
| 1127 | |
| 1128 | le?vperm $out3,$out3,$out3,$inpperm |
| 1129 | le?vperm $out4,$out4,$out4,$inpperm |
| 1130 | stvx_u $out3,$x00,$out |
| 1131 | le?vperm $out5,$out5,$out5,$inpperm |
| 1132 | stvx_u $out4,$x10,$out |
| 1133 | le?vperm $out6,$out6,$out6,$inpperm |
| 1134 | stvx_u $out5,$x20,$out |
| 1135 | le?vperm $out7,$out7,$out7,$inpperm |
| 1136 | stvx_u $out6,$x30,$out |
| 1137 | stvx_u $out7,$x40,$out |
| 1138 | addi $out,$out,0x50 |
| 1139 | b Lcbc_dec8x_done |
| 1140 | |
| 1141 | .align 5 |
| 1142 | Lcbc_dec8x_four: |
| 1143 | vncipherlast $out4,$out4,$ivec |
| 1144 | vncipherlast $out5,$out5,$in4 |
| 1145 | vncipherlast $out6,$out6,$in5 |
| 1146 | vncipherlast $out7,$out7,$in6 |
| 1147 | vmr $ivec,$in7 |
| 1148 | |
| 1149 | le?vperm $out4,$out4,$out4,$inpperm |
| 1150 | le?vperm $out5,$out5,$out5,$inpperm |
| 1151 | stvx_u $out4,$x00,$out |
| 1152 | le?vperm $out6,$out6,$out6,$inpperm |
| 1153 | stvx_u $out5,$x10,$out |
| 1154 | le?vperm $out7,$out7,$out7,$inpperm |
| 1155 | stvx_u $out6,$x20,$out |
| 1156 | stvx_u $out7,$x30,$out |
| 1157 | addi $out,$out,0x40 |
| 1158 | b Lcbc_dec8x_done |
| 1159 | |
| 1160 | .align 5 |
| 1161 | Lcbc_dec8x_three: |
| 1162 | vncipherlast $out5,$out5,$ivec |
| 1163 | vncipherlast $out6,$out6,$in5 |
| 1164 | vncipherlast $out7,$out7,$in6 |
| 1165 | vmr $ivec,$in7 |
| 1166 | |
| 1167 | le?vperm $out5,$out5,$out5,$inpperm |
| 1168 | le?vperm $out6,$out6,$out6,$inpperm |
| 1169 | stvx_u $out5,$x00,$out |
| 1170 | le?vperm $out7,$out7,$out7,$inpperm |
| 1171 | stvx_u $out6,$x10,$out |
| 1172 | stvx_u $out7,$x20,$out |
| 1173 | addi $out,$out,0x30 |
| 1174 | b Lcbc_dec8x_done |
| 1175 | |
| 1176 | .align 5 |
| 1177 | Lcbc_dec8x_two: |
| 1178 | vncipherlast $out6,$out6,$ivec |
| 1179 | vncipherlast $out7,$out7,$in6 |
| 1180 | vmr $ivec,$in7 |
| 1181 | |
| 1182 | le?vperm $out6,$out6,$out6,$inpperm |
| 1183 | le?vperm $out7,$out7,$out7,$inpperm |
| 1184 | stvx_u $out6,$x00,$out |
| 1185 | stvx_u $out7,$x10,$out |
| 1186 | addi $out,$out,0x20 |
| 1187 | b Lcbc_dec8x_done |
| 1188 | |
| 1189 | .align 5 |
| 1190 | Lcbc_dec8x_one: |
| 1191 | vncipherlast $out7,$out7,$ivec |
| 1192 | vmr $ivec,$in7 |
| 1193 | |
| 1194 | le?vperm $out7,$out7,$out7,$inpperm |
| 1195 | stvx_u $out7,0,$out |
| 1196 | addi $out,$out,0x10 |
| 1197 | |
| 1198 | Lcbc_dec8x_done: |
| 1199 | le?vperm $ivec,$ivec,$ivec,$inpperm |
| 1200 | stvx_u $ivec,0,$ivp # write [unaligned] iv |
| 1201 | |
| 1202 | li r10,`$FRAME+15` |
| 1203 | li r11,`$FRAME+31` |
| 1204 | stvx $inpperm,r10,$sp # wipe copies of round keys |
| 1205 | addi r10,r10,32 |
| 1206 | stvx $inpperm,r11,$sp |
| 1207 | addi r11,r11,32 |
| 1208 | stvx $inpperm,r10,$sp |
| 1209 | addi r10,r10,32 |
| 1210 | stvx $inpperm,r11,$sp |
| 1211 | addi r11,r11,32 |
| 1212 | stvx $inpperm,r10,$sp |
| 1213 | addi r10,r10,32 |
| 1214 | stvx $inpperm,r11,$sp |
| 1215 | addi r11,r11,32 |
| 1216 | stvx $inpperm,r10,$sp |
| 1217 | addi r10,r10,32 |
| 1218 | stvx $inpperm,r11,$sp |
| 1219 | addi r11,r11,32 |
| 1220 | |
| 1221 | mtspr 256,$vrsave |
| 1222 | lvx v20,r10,$sp # ABI says so |
| 1223 | addi r10,r10,32 |
| 1224 | lvx v21,r11,$sp |
| 1225 | addi r11,r11,32 |
| 1226 | lvx v22,r10,$sp |
| 1227 | addi r10,r10,32 |
| 1228 | lvx v23,r11,$sp |
| 1229 | addi r11,r11,32 |
| 1230 | lvx v24,r10,$sp |
| 1231 | addi r10,r10,32 |
| 1232 | lvx v25,r11,$sp |
| 1233 | addi r11,r11,32 |
| 1234 | lvx v26,r10,$sp |
| 1235 | addi r10,r10,32 |
| 1236 | lvx v27,r11,$sp |
| 1237 | addi r11,r11,32 |
| 1238 | lvx v28,r10,$sp |
| 1239 | addi r10,r10,32 |
| 1240 | lvx v29,r11,$sp |
| 1241 | addi r11,r11,32 |
| 1242 | lvx v30,r10,$sp |
| 1243 | lvx v31,r11,$sp |
| 1244 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 1245 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 1246 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 1247 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 1248 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 1249 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 1250 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 1251 | blr |
| 1252 | .long 0 |
| 1253 | .byte 0,12,0x04,0,0x80,6,6,0 |
| 1254 | .long 0 |
| 1255 | .size .${prefix}_cbc_encrypt,.-.${prefix}_cbc_encrypt |
| 1256 | ___ |
| 1257 | }} }}} |
| 1258 | |
| 1259 | ######################################################################### |
| 1260 | {{{ # CTR procedure[s] # |
| 1261 | my ($inp,$out,$len,$key,$ivp,$x10,$rounds,$idx)=map("r$_",(3..10)); |
| 1262 | my ($rndkey0,$rndkey1,$inout,$tmp)= map("v$_",(0..3)); |
| 1263 | my ($ivec,$inptail,$inpperm,$outhead,$outperm,$outmask,$keyperm,$one)= |
| 1264 | map("v$_",(4..11)); |
| 1265 | my $dat=$tmp; |
| 1266 | |
| 1267 | $code.=<<___; |
| 1268 | .globl .${prefix}_ctr32_encrypt_blocks |
| 1269 | .align 5 |
| 1270 | .${prefix}_ctr32_encrypt_blocks: |
| 1271 | ${UCMP}i $len,1 |
| 1272 | bltlr- |
| 1273 | |
| 1274 | lis r0,0xfff0 |
| 1275 | mfspr $vrsave,256 |
| 1276 | mtspr 256,r0 |
| 1277 | |
| 1278 | li $idx,15 |
| 1279 | vxor $rndkey0,$rndkey0,$rndkey0 |
| 1280 | le?vspltisb $tmp,0x0f |
| 1281 | |
| 1282 | lvx $ivec,0,$ivp # load [unaligned] iv |
| 1283 | lvsl $inpperm,0,$ivp |
| 1284 | lvx $inptail,$idx,$ivp |
| 1285 | vspltisb $one,1 |
| 1286 | le?vxor $inpperm,$inpperm,$tmp |
| 1287 | vperm $ivec,$ivec,$inptail,$inpperm |
| 1288 | vsldoi $one,$rndkey0,$one,1 |
| 1289 | |
| 1290 | neg r11,$inp |
| 1291 | ?lvsl $keyperm,0,$key # prepare for unaligned key |
| 1292 | lwz $rounds,240($key) |
| 1293 | |
| 1294 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 1295 | lvx $inptail,0,$inp |
| 1296 | addi $inp,$inp,15 # 15 is not typo |
| 1297 | le?vxor $inpperm,$inpperm,$tmp |
| 1298 | |
| 1299 | srwi $rounds,$rounds,1 |
| 1300 | li $idx,16 |
| 1301 | subi $rounds,$rounds,1 |
| 1302 | |
| 1303 | ${UCMP}i $len,8 |
| 1304 | bge _aesp8_ctr32_encrypt8x |
| 1305 | |
| 1306 | ?lvsr $outperm,0,$out # prepare for unaligned store |
| 1307 | vspltisb $outmask,-1 |
| 1308 | lvx $outhead,0,$out |
| 1309 | ?vperm $outmask,$rndkey0,$outmask,$outperm |
| 1310 | le?vxor $outperm,$outperm,$tmp |
| 1311 | |
| 1312 | lvx $rndkey0,0,$key |
| 1313 | mtctr $rounds |
| 1314 | lvx $rndkey1,$idx,$key |
| 1315 | addi $idx,$idx,16 |
| 1316 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1317 | vxor $inout,$ivec,$rndkey0 |
| 1318 | lvx $rndkey0,$idx,$key |
| 1319 | addi $idx,$idx,16 |
| 1320 | b Loop_ctr32_enc |
| 1321 | |
| 1322 | .align 5 |
| 1323 | Loop_ctr32_enc: |
| 1324 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1325 | vcipher $inout,$inout,$rndkey1 |
| 1326 | lvx $rndkey1,$idx,$key |
| 1327 | addi $idx,$idx,16 |
| 1328 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1329 | vcipher $inout,$inout,$rndkey0 |
| 1330 | lvx $rndkey0,$idx,$key |
| 1331 | addi $idx,$idx,16 |
| 1332 | bdnz Loop_ctr32_enc |
| 1333 | |
| 1334 | vadduwm $ivec,$ivec,$one |
| 1335 | vmr $dat,$inptail |
| 1336 | lvx $inptail,0,$inp |
| 1337 | addi $inp,$inp,16 |
| 1338 | subic. $len,$len,1 # blocks-- |
| 1339 | |
| 1340 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1341 | vcipher $inout,$inout,$rndkey1 |
| 1342 | lvx $rndkey1,$idx,$key |
| 1343 | vperm $dat,$dat,$inptail,$inpperm |
| 1344 | li $idx,16 |
| 1345 | ?vperm $rndkey1,$rndkey0,$rndkey1,$keyperm |
| 1346 | lvx $rndkey0,0,$key |
| 1347 | vxor $dat,$dat,$rndkey1 # last round key |
| 1348 | vcipherlast $inout,$inout,$dat |
| 1349 | |
| 1350 | lvx $rndkey1,$idx,$key |
| 1351 | addi $idx,$idx,16 |
| 1352 | vperm $inout,$inout,$inout,$outperm |
| 1353 | vsel $dat,$outhead,$inout,$outmask |
| 1354 | mtctr $rounds |
| 1355 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1356 | vmr $outhead,$inout |
| 1357 | vxor $inout,$ivec,$rndkey0 |
| 1358 | lvx $rndkey0,$idx,$key |
| 1359 | addi $idx,$idx,16 |
| 1360 | stvx $dat,0,$out |
| 1361 | addi $out,$out,16 |
| 1362 | bne Loop_ctr32_enc |
| 1363 | |
| 1364 | addi $out,$out,-1 |
| 1365 | lvx $inout,0,$out # redundant in aligned case |
| 1366 | vsel $inout,$outhead,$inout,$outmask |
| 1367 | stvx $inout,0,$out |
| 1368 | |
| 1369 | mtspr 256,$vrsave |
| 1370 | blr |
| 1371 | .long 0 |
| 1372 | .byte 0,12,0x14,0,0,0,6,0 |
| 1373 | .long 0 |
| 1374 | ___ |
| 1375 | ######################################################################### |
| 1376 | {{ # Optimized CTR procedure # |
| 1377 | my $key_="r11"; |
| 1378 | my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,8,26..31)); |
| 1379 | $x00=0 if ($flavour =~ /osx/); |
| 1380 | my ($in0, $in1, $in2, $in3, $in4, $in5, $in6, $in7 )=map("v$_",(0..3,10,12..14)); |
| 1381 | my ($out0,$out1,$out2,$out3,$out4,$out5,$out6,$out7)=map("v$_",(15..22)); |
| 1382 | my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys |
| 1383 | # v26-v31 last 6 round keys |
| 1384 | my ($tmp,$keyperm)=($in3,$in4); # aliases with "caller", redundant assignment |
| 1385 | my ($two,$three,$four)=($outhead,$outperm,$outmask); |
| 1386 | |
| 1387 | $code.=<<___; |
| 1388 | .align 5 |
| 1389 | _aesp8_ctr32_encrypt8x: |
| 1390 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 1391 | li r10,`$FRAME+8*16+15` |
| 1392 | li r11,`$FRAME+8*16+31` |
| 1393 | stvx v20,r10,$sp # ABI says so |
| 1394 | addi r10,r10,32 |
| 1395 | stvx v21,r11,$sp |
| 1396 | addi r11,r11,32 |
| 1397 | stvx v22,r10,$sp |
| 1398 | addi r10,r10,32 |
| 1399 | stvx v23,r11,$sp |
| 1400 | addi r11,r11,32 |
| 1401 | stvx v24,r10,$sp |
| 1402 | addi r10,r10,32 |
| 1403 | stvx v25,r11,$sp |
| 1404 | addi r11,r11,32 |
| 1405 | stvx v26,r10,$sp |
| 1406 | addi r10,r10,32 |
| 1407 | stvx v27,r11,$sp |
| 1408 | addi r11,r11,32 |
| 1409 | stvx v28,r10,$sp |
| 1410 | addi r10,r10,32 |
| 1411 | stvx v29,r11,$sp |
| 1412 | addi r11,r11,32 |
| 1413 | stvx v30,r10,$sp |
| 1414 | stvx v31,r11,$sp |
| 1415 | li r0,-1 |
| 1416 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 1417 | li $x10,0x10 |
| 1418 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 1419 | li $x20,0x20 |
| 1420 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 1421 | li $x30,0x30 |
| 1422 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 1423 | li $x40,0x40 |
| 1424 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 1425 | li $x50,0x50 |
| 1426 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 1427 | li $x60,0x60 |
| 1428 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 1429 | li $x70,0x70 |
| 1430 | mtspr 256,r0 |
| 1431 | |
| 1432 | subi $rounds,$rounds,3 # -4 in total |
| 1433 | |
| 1434 | lvx $rndkey0,$x00,$key # load key schedule |
| 1435 | lvx v30,$x10,$key |
| 1436 | addi $key,$key,0x20 |
| 1437 | lvx v31,$x00,$key |
| 1438 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1439 | addi $key_,$sp,`$FRAME+15` |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 1440 | mtctr $rounds |
| 1441 | |
| 1442 | Load_ctr32_enc_key: |
| 1443 | ?vperm v24,v30,v31,$keyperm |
| 1444 | lvx v30,$x10,$key |
| 1445 | addi $key,$key,0x20 |
| 1446 | stvx v24,$x00,$key_ # off-load round[1] |
| 1447 | ?vperm v25,v31,v30,$keyperm |
| 1448 | lvx v31,$x00,$key |
| 1449 | stvx v25,$x10,$key_ # off-load round[2] |
| 1450 | addi $key_,$key_,0x20 |
| 1451 | bdnz Load_ctr32_enc_key |
| 1452 | |
| 1453 | lvx v26,$x10,$key |
| 1454 | ?vperm v24,v30,v31,$keyperm |
| 1455 | lvx v27,$x20,$key |
| 1456 | stvx v24,$x00,$key_ # off-load round[3] |
| 1457 | ?vperm v25,v31,v26,$keyperm |
| 1458 | lvx v28,$x30,$key |
| 1459 | stvx v25,$x10,$key_ # off-load round[4] |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1460 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 1461 | ?vperm v26,v26,v27,$keyperm |
| 1462 | lvx v29,$x40,$key |
| 1463 | ?vperm v27,v27,v28,$keyperm |
| 1464 | lvx v30,$x50,$key |
| 1465 | ?vperm v28,v28,v29,$keyperm |
| 1466 | lvx v31,$x60,$key |
| 1467 | ?vperm v29,v29,v30,$keyperm |
| 1468 | lvx $out0,$x70,$key # borrow $out0 |
| 1469 | ?vperm v30,v30,v31,$keyperm |
| 1470 | lvx v24,$x00,$key_ # pre-load round[1] |
| 1471 | ?vperm v31,v31,$out0,$keyperm |
| 1472 | lvx v25,$x10,$key_ # pre-load round[2] |
| 1473 | |
| 1474 | vadduwm $two,$one,$one |
| 1475 | subi $inp,$inp,15 # undo "caller" |
| 1476 | $SHL $len,$len,4 |
| 1477 | |
| 1478 | vadduwm $out1,$ivec,$one # counter values ... |
| 1479 | vadduwm $out2,$ivec,$two |
| 1480 | vxor $out0,$ivec,$rndkey0 # ... xored with rndkey[0] |
| 1481 | le?li $idx,8 |
| 1482 | vadduwm $out3,$out1,$two |
| 1483 | vxor $out1,$out1,$rndkey0 |
| 1484 | le?lvsl $inpperm,0,$idx |
| 1485 | vadduwm $out4,$out2,$two |
| 1486 | vxor $out2,$out2,$rndkey0 |
| 1487 | le?vspltisb $tmp,0x0f |
| 1488 | vadduwm $out5,$out3,$two |
| 1489 | vxor $out3,$out3,$rndkey0 |
| 1490 | le?vxor $inpperm,$inpperm,$tmp # transform for lvx_u/stvx_u |
| 1491 | vadduwm $out6,$out4,$two |
| 1492 | vxor $out4,$out4,$rndkey0 |
| 1493 | vadduwm $out7,$out5,$two |
| 1494 | vxor $out5,$out5,$rndkey0 |
| 1495 | vadduwm $ivec,$out6,$two # next counter value |
| 1496 | vxor $out6,$out6,$rndkey0 |
| 1497 | vxor $out7,$out7,$rndkey0 |
| 1498 | |
| 1499 | mtctr $rounds |
| 1500 | b Loop_ctr32_enc8x |
| 1501 | .align 5 |
| 1502 | Loop_ctr32_enc8x: |
| 1503 | vcipher $out0,$out0,v24 |
| 1504 | vcipher $out1,$out1,v24 |
| 1505 | vcipher $out2,$out2,v24 |
| 1506 | vcipher $out3,$out3,v24 |
| 1507 | vcipher $out4,$out4,v24 |
| 1508 | vcipher $out5,$out5,v24 |
| 1509 | vcipher $out6,$out6,v24 |
| 1510 | vcipher $out7,$out7,v24 |
| 1511 | Loop_ctr32_enc8x_middle: |
| 1512 | lvx v24,$x20,$key_ # round[3] |
| 1513 | addi $key_,$key_,0x20 |
| 1514 | |
| 1515 | vcipher $out0,$out0,v25 |
| 1516 | vcipher $out1,$out1,v25 |
| 1517 | vcipher $out2,$out2,v25 |
| 1518 | vcipher $out3,$out3,v25 |
| 1519 | vcipher $out4,$out4,v25 |
| 1520 | vcipher $out5,$out5,v25 |
| 1521 | vcipher $out6,$out6,v25 |
| 1522 | vcipher $out7,$out7,v25 |
| 1523 | lvx v25,$x10,$key_ # round[4] |
| 1524 | bdnz Loop_ctr32_enc8x |
| 1525 | |
| 1526 | subic r11,$len,256 # $len-256, borrow $key_ |
| 1527 | vcipher $out0,$out0,v24 |
| 1528 | vcipher $out1,$out1,v24 |
| 1529 | vcipher $out2,$out2,v24 |
| 1530 | vcipher $out3,$out3,v24 |
| 1531 | vcipher $out4,$out4,v24 |
| 1532 | vcipher $out5,$out5,v24 |
| 1533 | vcipher $out6,$out6,v24 |
| 1534 | vcipher $out7,$out7,v24 |
| 1535 | |
| 1536 | subfe r0,r0,r0 # borrow?-1:0 |
| 1537 | vcipher $out0,$out0,v25 |
| 1538 | vcipher $out1,$out1,v25 |
| 1539 | vcipher $out2,$out2,v25 |
| 1540 | vcipher $out3,$out3,v25 |
| 1541 | vcipher $out4,$out4,v25 |
| 1542 | vcipher $out5,$out5,v25 |
| 1543 | vcipher $out6,$out6,v25 |
| 1544 | vcipher $out7,$out7,v25 |
| 1545 | |
| 1546 | and r0,r0,r11 |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 1547 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 1548 | vcipher $out0,$out0,v26 |
| 1549 | vcipher $out1,$out1,v26 |
| 1550 | vcipher $out2,$out2,v26 |
| 1551 | vcipher $out3,$out3,v26 |
| 1552 | vcipher $out4,$out4,v26 |
| 1553 | vcipher $out5,$out5,v26 |
| 1554 | vcipher $out6,$out6,v26 |
| 1555 | vcipher $out7,$out7,v26 |
| 1556 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 1557 | |
| 1558 | subic $len,$len,129 # $len-=129 |
| 1559 | vcipher $out0,$out0,v27 |
| 1560 | addi $len,$len,1 # $len-=128 really |
| 1561 | vcipher $out1,$out1,v27 |
| 1562 | vcipher $out2,$out2,v27 |
| 1563 | vcipher $out3,$out3,v27 |
| 1564 | vcipher $out4,$out4,v27 |
| 1565 | vcipher $out5,$out5,v27 |
| 1566 | vcipher $out6,$out6,v27 |
| 1567 | vcipher $out7,$out7,v27 |
| 1568 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 1569 | |
| 1570 | vcipher $out0,$out0,v28 |
| 1571 | lvx_u $in0,$x00,$inp # load input |
| 1572 | vcipher $out1,$out1,v28 |
| 1573 | lvx_u $in1,$x10,$inp |
| 1574 | vcipher $out2,$out2,v28 |
| 1575 | lvx_u $in2,$x20,$inp |
| 1576 | vcipher $out3,$out3,v28 |
| 1577 | lvx_u $in3,$x30,$inp |
| 1578 | vcipher $out4,$out4,v28 |
| 1579 | lvx_u $in4,$x40,$inp |
| 1580 | vcipher $out5,$out5,v28 |
| 1581 | lvx_u $in5,$x50,$inp |
| 1582 | vcipher $out6,$out6,v28 |
| 1583 | lvx_u $in6,$x60,$inp |
| 1584 | vcipher $out7,$out7,v28 |
| 1585 | lvx_u $in7,$x70,$inp |
| 1586 | addi $inp,$inp,0x80 |
| 1587 | |
| 1588 | vcipher $out0,$out0,v29 |
| 1589 | le?vperm $in0,$in0,$in0,$inpperm |
| 1590 | vcipher $out1,$out1,v29 |
| 1591 | le?vperm $in1,$in1,$in1,$inpperm |
| 1592 | vcipher $out2,$out2,v29 |
| 1593 | le?vperm $in2,$in2,$in2,$inpperm |
| 1594 | vcipher $out3,$out3,v29 |
| 1595 | le?vperm $in3,$in3,$in3,$inpperm |
| 1596 | vcipher $out4,$out4,v29 |
| 1597 | le?vperm $in4,$in4,$in4,$inpperm |
| 1598 | vcipher $out5,$out5,v29 |
| 1599 | le?vperm $in5,$in5,$in5,$inpperm |
| 1600 | vcipher $out6,$out6,v29 |
| 1601 | le?vperm $in6,$in6,$in6,$inpperm |
| 1602 | vcipher $out7,$out7,v29 |
| 1603 | le?vperm $in7,$in7,$in7,$inpperm |
| 1604 | |
| 1605 | add $inp,$inp,r0 # $inp is adjusted in such |
| 1606 | # way that at exit from the |
| 1607 | # loop inX-in7 are loaded |
| 1608 | # with last "words" |
| 1609 | subfe. r0,r0,r0 # borrow?-1:0 |
| 1610 | vcipher $out0,$out0,v30 |
| 1611 | vxor $in0,$in0,v31 # xor with last round key |
| 1612 | vcipher $out1,$out1,v30 |
| 1613 | vxor $in1,$in1,v31 |
| 1614 | vcipher $out2,$out2,v30 |
| 1615 | vxor $in2,$in2,v31 |
| 1616 | vcipher $out3,$out3,v30 |
| 1617 | vxor $in3,$in3,v31 |
| 1618 | vcipher $out4,$out4,v30 |
| 1619 | vxor $in4,$in4,v31 |
| 1620 | vcipher $out5,$out5,v30 |
| 1621 | vxor $in5,$in5,v31 |
| 1622 | vcipher $out6,$out6,v30 |
| 1623 | vxor $in6,$in6,v31 |
| 1624 | vcipher $out7,$out7,v30 |
| 1625 | vxor $in7,$in7,v31 |
| 1626 | |
| 1627 | bne Lctr32_enc8x_break # did $len-129 borrow? |
| 1628 | |
| 1629 | vcipherlast $in0,$out0,$in0 |
| 1630 | vcipherlast $in1,$out1,$in1 |
| 1631 | vadduwm $out1,$ivec,$one # counter values ... |
| 1632 | vcipherlast $in2,$out2,$in2 |
| 1633 | vadduwm $out2,$ivec,$two |
| 1634 | vxor $out0,$ivec,$rndkey0 # ... xored with rndkey[0] |
| 1635 | vcipherlast $in3,$out3,$in3 |
| 1636 | vadduwm $out3,$out1,$two |
| 1637 | vxor $out1,$out1,$rndkey0 |
| 1638 | vcipherlast $in4,$out4,$in4 |
| 1639 | vadduwm $out4,$out2,$two |
| 1640 | vxor $out2,$out2,$rndkey0 |
| 1641 | vcipherlast $in5,$out5,$in5 |
| 1642 | vadduwm $out5,$out3,$two |
| 1643 | vxor $out3,$out3,$rndkey0 |
| 1644 | vcipherlast $in6,$out6,$in6 |
| 1645 | vadduwm $out6,$out4,$two |
| 1646 | vxor $out4,$out4,$rndkey0 |
| 1647 | vcipherlast $in7,$out7,$in7 |
| 1648 | vadduwm $out7,$out5,$two |
| 1649 | vxor $out5,$out5,$rndkey0 |
| 1650 | le?vperm $in0,$in0,$in0,$inpperm |
| 1651 | vadduwm $ivec,$out6,$two # next counter value |
| 1652 | vxor $out6,$out6,$rndkey0 |
| 1653 | le?vperm $in1,$in1,$in1,$inpperm |
| 1654 | vxor $out7,$out7,$rndkey0 |
| 1655 | mtctr $rounds |
| 1656 | |
| 1657 | vcipher $out0,$out0,v24 |
| 1658 | stvx_u $in0,$x00,$out |
| 1659 | le?vperm $in2,$in2,$in2,$inpperm |
| 1660 | vcipher $out1,$out1,v24 |
| 1661 | stvx_u $in1,$x10,$out |
| 1662 | le?vperm $in3,$in3,$in3,$inpperm |
| 1663 | vcipher $out2,$out2,v24 |
| 1664 | stvx_u $in2,$x20,$out |
| 1665 | le?vperm $in4,$in4,$in4,$inpperm |
| 1666 | vcipher $out3,$out3,v24 |
| 1667 | stvx_u $in3,$x30,$out |
| 1668 | le?vperm $in5,$in5,$in5,$inpperm |
| 1669 | vcipher $out4,$out4,v24 |
| 1670 | stvx_u $in4,$x40,$out |
| 1671 | le?vperm $in6,$in6,$in6,$inpperm |
| 1672 | vcipher $out5,$out5,v24 |
| 1673 | stvx_u $in5,$x50,$out |
| 1674 | le?vperm $in7,$in7,$in7,$inpperm |
| 1675 | vcipher $out6,$out6,v24 |
| 1676 | stvx_u $in6,$x60,$out |
| 1677 | vcipher $out7,$out7,v24 |
| 1678 | stvx_u $in7,$x70,$out |
| 1679 | addi $out,$out,0x80 |
| 1680 | |
| 1681 | b Loop_ctr32_enc8x_middle |
| 1682 | |
| 1683 | .align 5 |
| 1684 | Lctr32_enc8x_break: |
| 1685 | cmpwi $len,-0x60 |
| 1686 | blt Lctr32_enc8x_one |
| 1687 | nop |
| 1688 | beq Lctr32_enc8x_two |
| 1689 | cmpwi $len,-0x40 |
| 1690 | blt Lctr32_enc8x_three |
| 1691 | nop |
| 1692 | beq Lctr32_enc8x_four |
| 1693 | cmpwi $len,-0x20 |
| 1694 | blt Lctr32_enc8x_five |
| 1695 | nop |
| 1696 | beq Lctr32_enc8x_six |
| 1697 | cmpwi $len,0x00 |
| 1698 | blt Lctr32_enc8x_seven |
| 1699 | |
| 1700 | Lctr32_enc8x_eight: |
| 1701 | vcipherlast $out0,$out0,$in0 |
| 1702 | vcipherlast $out1,$out1,$in1 |
| 1703 | vcipherlast $out2,$out2,$in2 |
| 1704 | vcipherlast $out3,$out3,$in3 |
| 1705 | vcipherlast $out4,$out4,$in4 |
| 1706 | vcipherlast $out5,$out5,$in5 |
| 1707 | vcipherlast $out6,$out6,$in6 |
| 1708 | vcipherlast $out7,$out7,$in7 |
| 1709 | |
| 1710 | le?vperm $out0,$out0,$out0,$inpperm |
| 1711 | le?vperm $out1,$out1,$out1,$inpperm |
| 1712 | stvx_u $out0,$x00,$out |
| 1713 | le?vperm $out2,$out2,$out2,$inpperm |
| 1714 | stvx_u $out1,$x10,$out |
| 1715 | le?vperm $out3,$out3,$out3,$inpperm |
| 1716 | stvx_u $out2,$x20,$out |
| 1717 | le?vperm $out4,$out4,$out4,$inpperm |
| 1718 | stvx_u $out3,$x30,$out |
| 1719 | le?vperm $out5,$out5,$out5,$inpperm |
| 1720 | stvx_u $out4,$x40,$out |
| 1721 | le?vperm $out6,$out6,$out6,$inpperm |
| 1722 | stvx_u $out5,$x50,$out |
| 1723 | le?vperm $out7,$out7,$out7,$inpperm |
| 1724 | stvx_u $out6,$x60,$out |
| 1725 | stvx_u $out7,$x70,$out |
| 1726 | addi $out,$out,0x80 |
| 1727 | b Lctr32_enc8x_done |
| 1728 | |
| 1729 | .align 5 |
| 1730 | Lctr32_enc8x_seven: |
| 1731 | vcipherlast $out0,$out0,$in1 |
| 1732 | vcipherlast $out1,$out1,$in2 |
| 1733 | vcipherlast $out2,$out2,$in3 |
| 1734 | vcipherlast $out3,$out3,$in4 |
| 1735 | vcipherlast $out4,$out4,$in5 |
| 1736 | vcipherlast $out5,$out5,$in6 |
| 1737 | vcipherlast $out6,$out6,$in7 |
| 1738 | |
| 1739 | le?vperm $out0,$out0,$out0,$inpperm |
| 1740 | le?vperm $out1,$out1,$out1,$inpperm |
| 1741 | stvx_u $out0,$x00,$out |
| 1742 | le?vperm $out2,$out2,$out2,$inpperm |
| 1743 | stvx_u $out1,$x10,$out |
| 1744 | le?vperm $out3,$out3,$out3,$inpperm |
| 1745 | stvx_u $out2,$x20,$out |
| 1746 | le?vperm $out4,$out4,$out4,$inpperm |
| 1747 | stvx_u $out3,$x30,$out |
| 1748 | le?vperm $out5,$out5,$out5,$inpperm |
| 1749 | stvx_u $out4,$x40,$out |
| 1750 | le?vperm $out6,$out6,$out6,$inpperm |
| 1751 | stvx_u $out5,$x50,$out |
| 1752 | stvx_u $out6,$x60,$out |
| 1753 | addi $out,$out,0x70 |
| 1754 | b Lctr32_enc8x_done |
| 1755 | |
| 1756 | .align 5 |
| 1757 | Lctr32_enc8x_six: |
| 1758 | vcipherlast $out0,$out0,$in2 |
| 1759 | vcipherlast $out1,$out1,$in3 |
| 1760 | vcipherlast $out2,$out2,$in4 |
| 1761 | vcipherlast $out3,$out3,$in5 |
| 1762 | vcipherlast $out4,$out4,$in6 |
| 1763 | vcipherlast $out5,$out5,$in7 |
| 1764 | |
| 1765 | le?vperm $out0,$out0,$out0,$inpperm |
| 1766 | le?vperm $out1,$out1,$out1,$inpperm |
| 1767 | stvx_u $out0,$x00,$out |
| 1768 | le?vperm $out2,$out2,$out2,$inpperm |
| 1769 | stvx_u $out1,$x10,$out |
| 1770 | le?vperm $out3,$out3,$out3,$inpperm |
| 1771 | stvx_u $out2,$x20,$out |
| 1772 | le?vperm $out4,$out4,$out4,$inpperm |
| 1773 | stvx_u $out3,$x30,$out |
| 1774 | le?vperm $out5,$out5,$out5,$inpperm |
| 1775 | stvx_u $out4,$x40,$out |
| 1776 | stvx_u $out5,$x50,$out |
| 1777 | addi $out,$out,0x60 |
| 1778 | b Lctr32_enc8x_done |
| 1779 | |
| 1780 | .align 5 |
| 1781 | Lctr32_enc8x_five: |
| 1782 | vcipherlast $out0,$out0,$in3 |
| 1783 | vcipherlast $out1,$out1,$in4 |
| 1784 | vcipherlast $out2,$out2,$in5 |
| 1785 | vcipherlast $out3,$out3,$in6 |
| 1786 | vcipherlast $out4,$out4,$in7 |
| 1787 | |
| 1788 | le?vperm $out0,$out0,$out0,$inpperm |
| 1789 | le?vperm $out1,$out1,$out1,$inpperm |
| 1790 | stvx_u $out0,$x00,$out |
| 1791 | le?vperm $out2,$out2,$out2,$inpperm |
| 1792 | stvx_u $out1,$x10,$out |
| 1793 | le?vperm $out3,$out3,$out3,$inpperm |
| 1794 | stvx_u $out2,$x20,$out |
| 1795 | le?vperm $out4,$out4,$out4,$inpperm |
| 1796 | stvx_u $out3,$x30,$out |
| 1797 | stvx_u $out4,$x40,$out |
| 1798 | addi $out,$out,0x50 |
| 1799 | b Lctr32_enc8x_done |
| 1800 | |
| 1801 | .align 5 |
| 1802 | Lctr32_enc8x_four: |
| 1803 | vcipherlast $out0,$out0,$in4 |
| 1804 | vcipherlast $out1,$out1,$in5 |
| 1805 | vcipherlast $out2,$out2,$in6 |
| 1806 | vcipherlast $out3,$out3,$in7 |
| 1807 | |
| 1808 | le?vperm $out0,$out0,$out0,$inpperm |
| 1809 | le?vperm $out1,$out1,$out1,$inpperm |
| 1810 | stvx_u $out0,$x00,$out |
| 1811 | le?vperm $out2,$out2,$out2,$inpperm |
| 1812 | stvx_u $out1,$x10,$out |
| 1813 | le?vperm $out3,$out3,$out3,$inpperm |
| 1814 | stvx_u $out2,$x20,$out |
| 1815 | stvx_u $out3,$x30,$out |
| 1816 | addi $out,$out,0x40 |
| 1817 | b Lctr32_enc8x_done |
| 1818 | |
| 1819 | .align 5 |
| 1820 | Lctr32_enc8x_three: |
| 1821 | vcipherlast $out0,$out0,$in5 |
| 1822 | vcipherlast $out1,$out1,$in6 |
| 1823 | vcipherlast $out2,$out2,$in7 |
| 1824 | |
| 1825 | le?vperm $out0,$out0,$out0,$inpperm |
| 1826 | le?vperm $out1,$out1,$out1,$inpperm |
| 1827 | stvx_u $out0,$x00,$out |
| 1828 | le?vperm $out2,$out2,$out2,$inpperm |
| 1829 | stvx_u $out1,$x10,$out |
| 1830 | stvx_u $out2,$x20,$out |
| 1831 | addi $out,$out,0x30 |
Pete Bentley | 0c61efe | 2019-08-13 09:32:23 +0100 | [diff] [blame^] | 1832 | b Lctr32_enc8x_done |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 1833 | |
| 1834 | .align 5 |
| 1835 | Lctr32_enc8x_two: |
| 1836 | vcipherlast $out0,$out0,$in6 |
| 1837 | vcipherlast $out1,$out1,$in7 |
| 1838 | |
| 1839 | le?vperm $out0,$out0,$out0,$inpperm |
| 1840 | le?vperm $out1,$out1,$out1,$inpperm |
| 1841 | stvx_u $out0,$x00,$out |
| 1842 | stvx_u $out1,$x10,$out |
| 1843 | addi $out,$out,0x20 |
Pete Bentley | 0c61efe | 2019-08-13 09:32:23 +0100 | [diff] [blame^] | 1844 | b Lctr32_enc8x_done |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 1845 | |
| 1846 | .align 5 |
| 1847 | Lctr32_enc8x_one: |
| 1848 | vcipherlast $out0,$out0,$in7 |
| 1849 | |
| 1850 | le?vperm $out0,$out0,$out0,$inpperm |
| 1851 | stvx_u $out0,0,$out |
| 1852 | addi $out,$out,0x10 |
| 1853 | |
| 1854 | Lctr32_enc8x_done: |
| 1855 | li r10,`$FRAME+15` |
| 1856 | li r11,`$FRAME+31` |
| 1857 | stvx $inpperm,r10,$sp # wipe copies of round keys |
| 1858 | addi r10,r10,32 |
| 1859 | stvx $inpperm,r11,$sp |
| 1860 | addi r11,r11,32 |
| 1861 | stvx $inpperm,r10,$sp |
| 1862 | addi r10,r10,32 |
| 1863 | stvx $inpperm,r11,$sp |
| 1864 | addi r11,r11,32 |
| 1865 | stvx $inpperm,r10,$sp |
| 1866 | addi r10,r10,32 |
| 1867 | stvx $inpperm,r11,$sp |
| 1868 | addi r11,r11,32 |
| 1869 | stvx $inpperm,r10,$sp |
| 1870 | addi r10,r10,32 |
| 1871 | stvx $inpperm,r11,$sp |
| 1872 | addi r11,r11,32 |
| 1873 | |
| 1874 | mtspr 256,$vrsave |
| 1875 | lvx v20,r10,$sp # ABI says so |
| 1876 | addi r10,r10,32 |
| 1877 | lvx v21,r11,$sp |
| 1878 | addi r11,r11,32 |
| 1879 | lvx v22,r10,$sp |
| 1880 | addi r10,r10,32 |
| 1881 | lvx v23,r11,$sp |
| 1882 | addi r11,r11,32 |
| 1883 | lvx v24,r10,$sp |
| 1884 | addi r10,r10,32 |
| 1885 | lvx v25,r11,$sp |
| 1886 | addi r11,r11,32 |
| 1887 | lvx v26,r10,$sp |
| 1888 | addi r10,r10,32 |
| 1889 | lvx v27,r11,$sp |
| 1890 | addi r11,r11,32 |
| 1891 | lvx v28,r10,$sp |
| 1892 | addi r10,r10,32 |
| 1893 | lvx v29,r11,$sp |
| 1894 | addi r11,r11,32 |
| 1895 | lvx v30,r10,$sp |
| 1896 | lvx v31,r11,$sp |
| 1897 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 1898 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 1899 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 1900 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 1901 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 1902 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 1903 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 1904 | blr |
| 1905 | .long 0 |
| 1906 | .byte 0,12,0x04,0,0x80,6,6,0 |
| 1907 | .long 0 |
| 1908 | .size .${prefix}_ctr32_encrypt_blocks,.-.${prefix}_ctr32_encrypt_blocks |
| 1909 | ___ |
| 1910 | }} }}} |
| 1911 | |
| 1912 | ######################################################################### |
| 1913 | {{{ # XTS procedures # |
| 1914 | # int aes_p8_xts_[en|de]crypt(const char *inp, char *out, size_t len, # |
| 1915 | # const AES_KEY *key1, const AES_KEY *key2, # |
| 1916 | # [const] unsigned char iv[16]); # |
| 1917 | # If $key2 is NULL, then a "tweak chaining" mode is engaged, in which # |
| 1918 | # input tweak value is assumed to be encrypted already, and last tweak # |
| 1919 | # value, one suitable for consecutive call on same chunk of data, is # |
| 1920 | # written back to original buffer. In addition, in "tweak chaining" # |
| 1921 | # mode only complete input blocks are processed. # |
| 1922 | |
| 1923 | my ($inp,$out,$len,$key1,$key2,$ivp,$rounds,$idx) = map("r$_",(3..10)); |
| 1924 | my ($rndkey0,$rndkey1,$inout) = map("v$_",(0..2)); |
| 1925 | my ($output,$inptail,$inpperm,$leperm,$keyperm) = map("v$_",(3..7)); |
| 1926 | my ($tweak,$seven,$eighty7,$tmp,$tweak1) = map("v$_",(8..12)); |
| 1927 | my $taillen = $key2; |
| 1928 | |
| 1929 | ($inp,$idx) = ($idx,$inp); # reassign |
| 1930 | |
| 1931 | $code.=<<___; |
| 1932 | .globl .${prefix}_xts_encrypt |
| 1933 | .align 5 |
| 1934 | .${prefix}_xts_encrypt: |
| 1935 | mr $inp,r3 # reassign |
| 1936 | li r3,-1 |
| 1937 | ${UCMP}i $len,16 |
| 1938 | bltlr- |
| 1939 | |
| 1940 | lis r0,0xfff0 |
| 1941 | mfspr r12,256 # save vrsave |
| 1942 | li r11,0 |
| 1943 | mtspr 256,r0 |
| 1944 | |
| 1945 | vspltisb $seven,0x07 # 0x070707..07 |
| 1946 | le?lvsl $leperm,r11,r11 |
| 1947 | le?vspltisb $tmp,0x0f |
| 1948 | le?vxor $leperm,$leperm,$seven |
| 1949 | |
| 1950 | li $idx,15 |
| 1951 | lvx $tweak,0,$ivp # load [unaligned] iv |
| 1952 | lvsl $inpperm,0,$ivp |
| 1953 | lvx $inptail,$idx,$ivp |
| 1954 | le?vxor $inpperm,$inpperm,$tmp |
| 1955 | vperm $tweak,$tweak,$inptail,$inpperm |
| 1956 | |
| 1957 | neg r11,$inp |
| 1958 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 1959 | lvx $inout,0,$inp |
| 1960 | addi $inp,$inp,15 # 15 is not typo |
| 1961 | le?vxor $inpperm,$inpperm,$tmp |
| 1962 | |
| 1963 | ${UCMP}i $key2,0 # key2==NULL? |
| 1964 | beq Lxts_enc_no_key2 |
| 1965 | |
| 1966 | ?lvsl $keyperm,0,$key2 # prepare for unaligned key |
| 1967 | lwz $rounds,240($key2) |
| 1968 | srwi $rounds,$rounds,1 |
| 1969 | subi $rounds,$rounds,1 |
| 1970 | li $idx,16 |
| 1971 | |
| 1972 | lvx $rndkey0,0,$key2 |
| 1973 | lvx $rndkey1,$idx,$key2 |
| 1974 | addi $idx,$idx,16 |
| 1975 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1976 | vxor $tweak,$tweak,$rndkey0 |
| 1977 | lvx $rndkey0,$idx,$key2 |
| 1978 | addi $idx,$idx,16 |
| 1979 | mtctr $rounds |
| 1980 | |
| 1981 | Ltweak_xts_enc: |
| 1982 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1983 | vcipher $tweak,$tweak,$rndkey1 |
| 1984 | lvx $rndkey1,$idx,$key2 |
| 1985 | addi $idx,$idx,16 |
| 1986 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1987 | vcipher $tweak,$tweak,$rndkey0 |
| 1988 | lvx $rndkey0,$idx,$key2 |
| 1989 | addi $idx,$idx,16 |
| 1990 | bdnz Ltweak_xts_enc |
| 1991 | |
| 1992 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 1993 | vcipher $tweak,$tweak,$rndkey1 |
| 1994 | lvx $rndkey1,$idx,$key2 |
| 1995 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 1996 | vcipherlast $tweak,$tweak,$rndkey0 |
| 1997 | |
| 1998 | li $ivp,0 # don't chain the tweak |
| 1999 | b Lxts_enc |
| 2000 | |
| 2001 | Lxts_enc_no_key2: |
| 2002 | li $idx,-16 |
| 2003 | and $len,$len,$idx # in "tweak chaining" |
| 2004 | # mode only complete |
| 2005 | # blocks are processed |
| 2006 | Lxts_enc: |
| 2007 | lvx $inptail,0,$inp |
| 2008 | addi $inp,$inp,16 |
| 2009 | |
| 2010 | ?lvsl $keyperm,0,$key1 # prepare for unaligned key |
| 2011 | lwz $rounds,240($key1) |
| 2012 | srwi $rounds,$rounds,1 |
| 2013 | subi $rounds,$rounds,1 |
| 2014 | li $idx,16 |
| 2015 | |
| 2016 | vslb $eighty7,$seven,$seven # 0x808080..80 |
| 2017 | vor $eighty7,$eighty7,$seven # 0x878787..87 |
| 2018 | vspltisb $tmp,1 # 0x010101..01 |
| 2019 | vsldoi $eighty7,$eighty7,$tmp,15 # 0x870101..01 |
| 2020 | |
| 2021 | ${UCMP}i $len,96 |
| 2022 | bge _aesp8_xts_encrypt6x |
| 2023 | |
| 2024 | andi. $taillen,$len,15 |
| 2025 | subic r0,$len,32 |
| 2026 | subi $taillen,$taillen,16 |
| 2027 | subfe r0,r0,r0 |
| 2028 | and r0,r0,$taillen |
| 2029 | add $inp,$inp,r0 |
| 2030 | |
| 2031 | lvx $rndkey0,0,$key1 |
| 2032 | lvx $rndkey1,$idx,$key1 |
| 2033 | addi $idx,$idx,16 |
| 2034 | vperm $inout,$inout,$inptail,$inpperm |
| 2035 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2036 | vxor $inout,$inout,$tweak |
| 2037 | vxor $inout,$inout,$rndkey0 |
| 2038 | lvx $rndkey0,$idx,$key1 |
| 2039 | addi $idx,$idx,16 |
| 2040 | mtctr $rounds |
| 2041 | b Loop_xts_enc |
| 2042 | |
| 2043 | .align 5 |
| 2044 | Loop_xts_enc: |
| 2045 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2046 | vcipher $inout,$inout,$rndkey1 |
| 2047 | lvx $rndkey1,$idx,$key1 |
| 2048 | addi $idx,$idx,16 |
| 2049 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2050 | vcipher $inout,$inout,$rndkey0 |
| 2051 | lvx $rndkey0,$idx,$key1 |
| 2052 | addi $idx,$idx,16 |
| 2053 | bdnz Loop_xts_enc |
| 2054 | |
| 2055 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2056 | vcipher $inout,$inout,$rndkey1 |
| 2057 | lvx $rndkey1,$idx,$key1 |
| 2058 | li $idx,16 |
| 2059 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2060 | vxor $rndkey0,$rndkey0,$tweak |
| 2061 | vcipherlast $output,$inout,$rndkey0 |
| 2062 | |
| 2063 | le?vperm $tmp,$output,$output,$leperm |
| 2064 | be?nop |
| 2065 | le?stvx_u $tmp,0,$out |
| 2066 | be?stvx_u $output,0,$out |
| 2067 | addi $out,$out,16 |
| 2068 | |
| 2069 | subic. $len,$len,16 |
| 2070 | beq Lxts_enc_done |
| 2071 | |
| 2072 | vmr $inout,$inptail |
| 2073 | lvx $inptail,0,$inp |
| 2074 | addi $inp,$inp,16 |
| 2075 | lvx $rndkey0,0,$key1 |
| 2076 | lvx $rndkey1,$idx,$key1 |
| 2077 | addi $idx,$idx,16 |
| 2078 | |
| 2079 | subic r0,$len,32 |
| 2080 | subfe r0,r0,r0 |
| 2081 | and r0,r0,$taillen |
| 2082 | add $inp,$inp,r0 |
| 2083 | |
| 2084 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2085 | vaddubm $tweak,$tweak,$tweak |
| 2086 | vsldoi $tmp,$tmp,$tmp,15 |
| 2087 | vand $tmp,$tmp,$eighty7 |
| 2088 | vxor $tweak,$tweak,$tmp |
| 2089 | |
| 2090 | vperm $inout,$inout,$inptail,$inpperm |
| 2091 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2092 | vxor $inout,$inout,$tweak |
| 2093 | vxor $output,$output,$rndkey0 # just in case $len<16 |
| 2094 | vxor $inout,$inout,$rndkey0 |
| 2095 | lvx $rndkey0,$idx,$key1 |
| 2096 | addi $idx,$idx,16 |
| 2097 | |
| 2098 | mtctr $rounds |
| 2099 | ${UCMP}i $len,16 |
| 2100 | bge Loop_xts_enc |
| 2101 | |
| 2102 | vxor $output,$output,$tweak |
| 2103 | lvsr $inpperm,0,$len # $inpperm is no longer needed |
| 2104 | vxor $inptail,$inptail,$inptail # $inptail is no longer needed |
| 2105 | vspltisb $tmp,-1 |
| 2106 | vperm $inptail,$inptail,$tmp,$inpperm |
| 2107 | vsel $inout,$inout,$output,$inptail |
| 2108 | |
| 2109 | subi r11,$out,17 |
| 2110 | subi $out,$out,16 |
| 2111 | mtctr $len |
| 2112 | li $len,16 |
| 2113 | Loop_xts_enc_steal: |
| 2114 | lbzu r0,1(r11) |
| 2115 | stb r0,16(r11) |
| 2116 | bdnz Loop_xts_enc_steal |
| 2117 | |
| 2118 | mtctr $rounds |
| 2119 | b Loop_xts_enc # one more time... |
| 2120 | |
| 2121 | Lxts_enc_done: |
| 2122 | ${UCMP}i $ivp,0 |
| 2123 | beq Lxts_enc_ret |
| 2124 | |
| 2125 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2126 | vaddubm $tweak,$tweak,$tweak |
| 2127 | vsldoi $tmp,$tmp,$tmp,15 |
| 2128 | vand $tmp,$tmp,$eighty7 |
| 2129 | vxor $tweak,$tweak,$tmp |
| 2130 | |
| 2131 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 2132 | stvx_u $tweak,0,$ivp |
| 2133 | |
| 2134 | Lxts_enc_ret: |
| 2135 | mtspr 256,r12 # restore vrsave |
| 2136 | li r3,0 |
| 2137 | blr |
| 2138 | .long 0 |
| 2139 | .byte 0,12,0x04,0,0x80,6,6,0 |
| 2140 | .long 0 |
| 2141 | .size .${prefix}_xts_encrypt,.-.${prefix}_xts_encrypt |
| 2142 | |
| 2143 | .globl .${prefix}_xts_decrypt |
| 2144 | .align 5 |
| 2145 | .${prefix}_xts_decrypt: |
| 2146 | mr $inp,r3 # reassign |
| 2147 | li r3,-1 |
| 2148 | ${UCMP}i $len,16 |
| 2149 | bltlr- |
| 2150 | |
| 2151 | lis r0,0xfff8 |
| 2152 | mfspr r12,256 # save vrsave |
| 2153 | li r11,0 |
| 2154 | mtspr 256,r0 |
| 2155 | |
| 2156 | andi. r0,$len,15 |
| 2157 | neg r0,r0 |
| 2158 | andi. r0,r0,16 |
| 2159 | sub $len,$len,r0 |
| 2160 | |
| 2161 | vspltisb $seven,0x07 # 0x070707..07 |
| 2162 | le?lvsl $leperm,r11,r11 |
| 2163 | le?vspltisb $tmp,0x0f |
| 2164 | le?vxor $leperm,$leperm,$seven |
| 2165 | |
| 2166 | li $idx,15 |
| 2167 | lvx $tweak,0,$ivp # load [unaligned] iv |
| 2168 | lvsl $inpperm,0,$ivp |
| 2169 | lvx $inptail,$idx,$ivp |
| 2170 | le?vxor $inpperm,$inpperm,$tmp |
| 2171 | vperm $tweak,$tweak,$inptail,$inpperm |
| 2172 | |
| 2173 | neg r11,$inp |
| 2174 | lvsr $inpperm,0,r11 # prepare for unaligned load |
| 2175 | lvx $inout,0,$inp |
| 2176 | addi $inp,$inp,15 # 15 is not typo |
| 2177 | le?vxor $inpperm,$inpperm,$tmp |
| 2178 | |
| 2179 | ${UCMP}i $key2,0 # key2==NULL? |
| 2180 | beq Lxts_dec_no_key2 |
| 2181 | |
| 2182 | ?lvsl $keyperm,0,$key2 # prepare for unaligned key |
| 2183 | lwz $rounds,240($key2) |
| 2184 | srwi $rounds,$rounds,1 |
| 2185 | subi $rounds,$rounds,1 |
| 2186 | li $idx,16 |
| 2187 | |
| 2188 | lvx $rndkey0,0,$key2 |
| 2189 | lvx $rndkey1,$idx,$key2 |
| 2190 | addi $idx,$idx,16 |
| 2191 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2192 | vxor $tweak,$tweak,$rndkey0 |
| 2193 | lvx $rndkey0,$idx,$key2 |
| 2194 | addi $idx,$idx,16 |
| 2195 | mtctr $rounds |
| 2196 | |
| 2197 | Ltweak_xts_dec: |
| 2198 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2199 | vcipher $tweak,$tweak,$rndkey1 |
| 2200 | lvx $rndkey1,$idx,$key2 |
| 2201 | addi $idx,$idx,16 |
| 2202 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2203 | vcipher $tweak,$tweak,$rndkey0 |
| 2204 | lvx $rndkey0,$idx,$key2 |
| 2205 | addi $idx,$idx,16 |
| 2206 | bdnz Ltweak_xts_dec |
| 2207 | |
| 2208 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2209 | vcipher $tweak,$tweak,$rndkey1 |
| 2210 | lvx $rndkey1,$idx,$key2 |
| 2211 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2212 | vcipherlast $tweak,$tweak,$rndkey0 |
| 2213 | |
| 2214 | li $ivp,0 # don't chain the tweak |
| 2215 | b Lxts_dec |
| 2216 | |
| 2217 | Lxts_dec_no_key2: |
| 2218 | neg $idx,$len |
| 2219 | andi. $idx,$idx,15 |
| 2220 | add $len,$len,$idx # in "tweak chaining" |
| 2221 | # mode only complete |
| 2222 | # blocks are processed |
| 2223 | Lxts_dec: |
| 2224 | lvx $inptail,0,$inp |
| 2225 | addi $inp,$inp,16 |
| 2226 | |
| 2227 | ?lvsl $keyperm,0,$key1 # prepare for unaligned key |
| 2228 | lwz $rounds,240($key1) |
| 2229 | srwi $rounds,$rounds,1 |
| 2230 | subi $rounds,$rounds,1 |
| 2231 | li $idx,16 |
| 2232 | |
| 2233 | vslb $eighty7,$seven,$seven # 0x808080..80 |
| 2234 | vor $eighty7,$eighty7,$seven # 0x878787..87 |
| 2235 | vspltisb $tmp,1 # 0x010101..01 |
| 2236 | vsldoi $eighty7,$eighty7,$tmp,15 # 0x870101..01 |
| 2237 | |
| 2238 | ${UCMP}i $len,96 |
| 2239 | bge _aesp8_xts_decrypt6x |
| 2240 | |
| 2241 | lvx $rndkey0,0,$key1 |
| 2242 | lvx $rndkey1,$idx,$key1 |
| 2243 | addi $idx,$idx,16 |
| 2244 | vperm $inout,$inout,$inptail,$inpperm |
| 2245 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2246 | vxor $inout,$inout,$tweak |
| 2247 | vxor $inout,$inout,$rndkey0 |
| 2248 | lvx $rndkey0,$idx,$key1 |
| 2249 | addi $idx,$idx,16 |
| 2250 | mtctr $rounds |
| 2251 | |
| 2252 | ${UCMP}i $len,16 |
| 2253 | blt Ltail_xts_dec |
| 2254 | be?b Loop_xts_dec |
| 2255 | |
| 2256 | .align 5 |
| 2257 | Loop_xts_dec: |
| 2258 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2259 | vncipher $inout,$inout,$rndkey1 |
| 2260 | lvx $rndkey1,$idx,$key1 |
| 2261 | addi $idx,$idx,16 |
| 2262 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2263 | vncipher $inout,$inout,$rndkey0 |
| 2264 | lvx $rndkey0,$idx,$key1 |
| 2265 | addi $idx,$idx,16 |
| 2266 | bdnz Loop_xts_dec |
| 2267 | |
| 2268 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2269 | vncipher $inout,$inout,$rndkey1 |
| 2270 | lvx $rndkey1,$idx,$key1 |
| 2271 | li $idx,16 |
| 2272 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2273 | vxor $rndkey0,$rndkey0,$tweak |
| 2274 | vncipherlast $output,$inout,$rndkey0 |
| 2275 | |
| 2276 | le?vperm $tmp,$output,$output,$leperm |
| 2277 | be?nop |
| 2278 | le?stvx_u $tmp,0,$out |
| 2279 | be?stvx_u $output,0,$out |
| 2280 | addi $out,$out,16 |
| 2281 | |
| 2282 | subic. $len,$len,16 |
| 2283 | beq Lxts_dec_done |
| 2284 | |
| 2285 | vmr $inout,$inptail |
| 2286 | lvx $inptail,0,$inp |
| 2287 | addi $inp,$inp,16 |
| 2288 | lvx $rndkey0,0,$key1 |
| 2289 | lvx $rndkey1,$idx,$key1 |
| 2290 | addi $idx,$idx,16 |
| 2291 | |
| 2292 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2293 | vaddubm $tweak,$tweak,$tweak |
| 2294 | vsldoi $tmp,$tmp,$tmp,15 |
| 2295 | vand $tmp,$tmp,$eighty7 |
| 2296 | vxor $tweak,$tweak,$tmp |
| 2297 | |
| 2298 | vperm $inout,$inout,$inptail,$inpperm |
| 2299 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2300 | vxor $inout,$inout,$tweak |
| 2301 | vxor $inout,$inout,$rndkey0 |
| 2302 | lvx $rndkey0,$idx,$key1 |
| 2303 | addi $idx,$idx,16 |
| 2304 | |
| 2305 | mtctr $rounds |
| 2306 | ${UCMP}i $len,16 |
| 2307 | bge Loop_xts_dec |
| 2308 | |
| 2309 | Ltail_xts_dec: |
| 2310 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2311 | vaddubm $tweak1,$tweak,$tweak |
| 2312 | vsldoi $tmp,$tmp,$tmp,15 |
| 2313 | vand $tmp,$tmp,$eighty7 |
| 2314 | vxor $tweak1,$tweak1,$tmp |
| 2315 | |
| 2316 | subi $inp,$inp,16 |
| 2317 | add $inp,$inp,$len |
| 2318 | |
| 2319 | vxor $inout,$inout,$tweak # :-( |
| 2320 | vxor $inout,$inout,$tweak1 # :-) |
| 2321 | |
| 2322 | Loop_xts_dec_short: |
| 2323 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2324 | vncipher $inout,$inout,$rndkey1 |
| 2325 | lvx $rndkey1,$idx,$key1 |
| 2326 | addi $idx,$idx,16 |
| 2327 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2328 | vncipher $inout,$inout,$rndkey0 |
| 2329 | lvx $rndkey0,$idx,$key1 |
| 2330 | addi $idx,$idx,16 |
| 2331 | bdnz Loop_xts_dec_short |
| 2332 | |
| 2333 | ?vperm $rndkey1,$rndkey1,$rndkey0,$keyperm |
| 2334 | vncipher $inout,$inout,$rndkey1 |
| 2335 | lvx $rndkey1,$idx,$key1 |
| 2336 | li $idx,16 |
| 2337 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2338 | vxor $rndkey0,$rndkey0,$tweak1 |
| 2339 | vncipherlast $output,$inout,$rndkey0 |
| 2340 | |
| 2341 | le?vperm $tmp,$output,$output,$leperm |
| 2342 | be?nop |
| 2343 | le?stvx_u $tmp,0,$out |
| 2344 | be?stvx_u $output,0,$out |
| 2345 | |
| 2346 | vmr $inout,$inptail |
| 2347 | lvx $inptail,0,$inp |
| 2348 | #addi $inp,$inp,16 |
| 2349 | lvx $rndkey0,0,$key1 |
| 2350 | lvx $rndkey1,$idx,$key1 |
| 2351 | addi $idx,$idx,16 |
| 2352 | vperm $inout,$inout,$inptail,$inpperm |
| 2353 | ?vperm $rndkey0,$rndkey0,$rndkey1,$keyperm |
| 2354 | |
| 2355 | lvsr $inpperm,0,$len # $inpperm is no longer needed |
| 2356 | vxor $inptail,$inptail,$inptail # $inptail is no longer needed |
| 2357 | vspltisb $tmp,-1 |
| 2358 | vperm $inptail,$inptail,$tmp,$inpperm |
| 2359 | vsel $inout,$inout,$output,$inptail |
| 2360 | |
| 2361 | vxor $rndkey0,$rndkey0,$tweak |
| 2362 | vxor $inout,$inout,$rndkey0 |
| 2363 | lvx $rndkey0,$idx,$key1 |
| 2364 | addi $idx,$idx,16 |
| 2365 | |
| 2366 | subi r11,$out,1 |
| 2367 | mtctr $len |
| 2368 | li $len,16 |
| 2369 | Loop_xts_dec_steal: |
| 2370 | lbzu r0,1(r11) |
| 2371 | stb r0,16(r11) |
| 2372 | bdnz Loop_xts_dec_steal |
| 2373 | |
| 2374 | mtctr $rounds |
| 2375 | b Loop_xts_dec # one more time... |
| 2376 | |
| 2377 | Lxts_dec_done: |
| 2378 | ${UCMP}i $ivp,0 |
| 2379 | beq Lxts_dec_ret |
| 2380 | |
| 2381 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2382 | vaddubm $tweak,$tweak,$tweak |
| 2383 | vsldoi $tmp,$tmp,$tmp,15 |
| 2384 | vand $tmp,$tmp,$eighty7 |
| 2385 | vxor $tweak,$tweak,$tmp |
| 2386 | |
| 2387 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 2388 | stvx_u $tweak,0,$ivp |
| 2389 | |
| 2390 | Lxts_dec_ret: |
| 2391 | mtspr 256,r12 # restore vrsave |
| 2392 | li r3,0 |
| 2393 | blr |
| 2394 | .long 0 |
| 2395 | .byte 0,12,0x04,0,0x80,6,6,0 |
| 2396 | .long 0 |
| 2397 | .size .${prefix}_xts_decrypt,.-.${prefix}_xts_decrypt |
| 2398 | ___ |
| 2399 | ######################################################################### |
| 2400 | {{ # Optimized XTS procedures # |
| 2401 | my $key_=$key2; |
| 2402 | my ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70)=map("r$_",(0,3,26..31)); |
| 2403 | $x00=0 if ($flavour =~ /osx/); |
| 2404 | my ($in0, $in1, $in2, $in3, $in4, $in5 )=map("v$_",(0..5)); |
| 2405 | my ($out0, $out1, $out2, $out3, $out4, $out5)=map("v$_",(7,12..16)); |
| 2406 | my ($twk0, $twk1, $twk2, $twk3, $twk4, $twk5)=map("v$_",(17..22)); |
| 2407 | my $rndkey0="v23"; # v24-v25 rotating buffer for first found keys |
| 2408 | # v26-v31 last 6 round keys |
| 2409 | my ($keyperm)=($out0); # aliases with "caller", redundant assignment |
| 2410 | my $taillen=$x70; |
| 2411 | |
| 2412 | $code.=<<___; |
| 2413 | .align 5 |
| 2414 | _aesp8_xts_encrypt6x: |
| 2415 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 2416 | mflr r11 |
| 2417 | li r7,`$FRAME+8*16+15` |
| 2418 | li r3,`$FRAME+8*16+31` |
| 2419 | $PUSH r11,`$FRAME+21*16+6*$SIZE_T+$LRSAVE`($sp) |
| 2420 | stvx v20,r7,$sp # ABI says so |
| 2421 | addi r7,r7,32 |
| 2422 | stvx v21,r3,$sp |
| 2423 | addi r3,r3,32 |
| 2424 | stvx v22,r7,$sp |
| 2425 | addi r7,r7,32 |
| 2426 | stvx v23,r3,$sp |
| 2427 | addi r3,r3,32 |
| 2428 | stvx v24,r7,$sp |
| 2429 | addi r7,r7,32 |
| 2430 | stvx v25,r3,$sp |
| 2431 | addi r3,r3,32 |
| 2432 | stvx v26,r7,$sp |
| 2433 | addi r7,r7,32 |
| 2434 | stvx v27,r3,$sp |
| 2435 | addi r3,r3,32 |
| 2436 | stvx v28,r7,$sp |
| 2437 | addi r7,r7,32 |
| 2438 | stvx v29,r3,$sp |
| 2439 | addi r3,r3,32 |
| 2440 | stvx v30,r7,$sp |
| 2441 | stvx v31,r3,$sp |
| 2442 | li r0,-1 |
| 2443 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 2444 | li $x10,0x10 |
| 2445 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 2446 | li $x20,0x20 |
| 2447 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 2448 | li $x30,0x30 |
| 2449 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 2450 | li $x40,0x40 |
| 2451 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 2452 | li $x50,0x50 |
| 2453 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 2454 | li $x60,0x60 |
| 2455 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 2456 | li $x70,0x70 |
| 2457 | mtspr 256,r0 |
| 2458 | |
| 2459 | subi $rounds,$rounds,3 # -4 in total |
| 2460 | |
| 2461 | lvx $rndkey0,$x00,$key1 # load key schedule |
| 2462 | lvx v30,$x10,$key1 |
| 2463 | addi $key1,$key1,0x20 |
| 2464 | lvx v31,$x00,$key1 |
| 2465 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 2466 | addi $key_,$sp,`$FRAME+15` |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 2467 | mtctr $rounds |
| 2468 | |
| 2469 | Load_xts_enc_key: |
| 2470 | ?vperm v24,v30,v31,$keyperm |
| 2471 | lvx v30,$x10,$key1 |
| 2472 | addi $key1,$key1,0x20 |
| 2473 | stvx v24,$x00,$key_ # off-load round[1] |
| 2474 | ?vperm v25,v31,v30,$keyperm |
| 2475 | lvx v31,$x00,$key1 |
| 2476 | stvx v25,$x10,$key_ # off-load round[2] |
| 2477 | addi $key_,$key_,0x20 |
| 2478 | bdnz Load_xts_enc_key |
| 2479 | |
| 2480 | lvx v26,$x10,$key1 |
| 2481 | ?vperm v24,v30,v31,$keyperm |
| 2482 | lvx v27,$x20,$key1 |
| 2483 | stvx v24,$x00,$key_ # off-load round[3] |
| 2484 | ?vperm v25,v31,v26,$keyperm |
| 2485 | lvx v28,$x30,$key1 |
| 2486 | stvx v25,$x10,$key_ # off-load round[4] |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 2487 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 2488 | ?vperm v26,v26,v27,$keyperm |
| 2489 | lvx v29,$x40,$key1 |
| 2490 | ?vperm v27,v27,v28,$keyperm |
| 2491 | lvx v30,$x50,$key1 |
| 2492 | ?vperm v28,v28,v29,$keyperm |
| 2493 | lvx v31,$x60,$key1 |
| 2494 | ?vperm v29,v29,v30,$keyperm |
| 2495 | lvx $twk5,$x70,$key1 # borrow $twk5 |
| 2496 | ?vperm v30,v30,v31,$keyperm |
| 2497 | lvx v24,$x00,$key_ # pre-load round[1] |
| 2498 | ?vperm v31,v31,$twk5,$keyperm |
| 2499 | lvx v25,$x10,$key_ # pre-load round[2] |
| 2500 | |
| 2501 | vperm $in0,$inout,$inptail,$inpperm |
| 2502 | subi $inp,$inp,31 # undo "caller" |
| 2503 | vxor $twk0,$tweak,$rndkey0 |
| 2504 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2505 | vaddubm $tweak,$tweak,$tweak |
| 2506 | vsldoi $tmp,$tmp,$tmp,15 |
| 2507 | vand $tmp,$tmp,$eighty7 |
| 2508 | vxor $out0,$in0,$twk0 |
| 2509 | vxor $tweak,$tweak,$tmp |
| 2510 | |
| 2511 | lvx_u $in1,$x10,$inp |
| 2512 | vxor $twk1,$tweak,$rndkey0 |
| 2513 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2514 | vaddubm $tweak,$tweak,$tweak |
| 2515 | vsldoi $tmp,$tmp,$tmp,15 |
| 2516 | le?vperm $in1,$in1,$in1,$leperm |
| 2517 | vand $tmp,$tmp,$eighty7 |
| 2518 | vxor $out1,$in1,$twk1 |
| 2519 | vxor $tweak,$tweak,$tmp |
| 2520 | |
| 2521 | lvx_u $in2,$x20,$inp |
| 2522 | andi. $taillen,$len,15 |
| 2523 | vxor $twk2,$tweak,$rndkey0 |
| 2524 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2525 | vaddubm $tweak,$tweak,$tweak |
| 2526 | vsldoi $tmp,$tmp,$tmp,15 |
| 2527 | le?vperm $in2,$in2,$in2,$leperm |
| 2528 | vand $tmp,$tmp,$eighty7 |
| 2529 | vxor $out2,$in2,$twk2 |
| 2530 | vxor $tweak,$tweak,$tmp |
| 2531 | |
| 2532 | lvx_u $in3,$x30,$inp |
| 2533 | sub $len,$len,$taillen |
| 2534 | vxor $twk3,$tweak,$rndkey0 |
| 2535 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2536 | vaddubm $tweak,$tweak,$tweak |
| 2537 | vsldoi $tmp,$tmp,$tmp,15 |
| 2538 | le?vperm $in3,$in3,$in3,$leperm |
| 2539 | vand $tmp,$tmp,$eighty7 |
| 2540 | vxor $out3,$in3,$twk3 |
| 2541 | vxor $tweak,$tweak,$tmp |
| 2542 | |
| 2543 | lvx_u $in4,$x40,$inp |
| 2544 | subi $len,$len,0x60 |
| 2545 | vxor $twk4,$tweak,$rndkey0 |
| 2546 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2547 | vaddubm $tweak,$tweak,$tweak |
| 2548 | vsldoi $tmp,$tmp,$tmp,15 |
| 2549 | le?vperm $in4,$in4,$in4,$leperm |
| 2550 | vand $tmp,$tmp,$eighty7 |
| 2551 | vxor $out4,$in4,$twk4 |
| 2552 | vxor $tweak,$tweak,$tmp |
| 2553 | |
| 2554 | lvx_u $in5,$x50,$inp |
| 2555 | addi $inp,$inp,0x60 |
| 2556 | vxor $twk5,$tweak,$rndkey0 |
| 2557 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2558 | vaddubm $tweak,$tweak,$tweak |
| 2559 | vsldoi $tmp,$tmp,$tmp,15 |
| 2560 | le?vperm $in5,$in5,$in5,$leperm |
| 2561 | vand $tmp,$tmp,$eighty7 |
| 2562 | vxor $out5,$in5,$twk5 |
| 2563 | vxor $tweak,$tweak,$tmp |
| 2564 | |
| 2565 | vxor v31,v31,$rndkey0 |
| 2566 | mtctr $rounds |
| 2567 | b Loop_xts_enc6x |
| 2568 | |
| 2569 | .align 5 |
| 2570 | Loop_xts_enc6x: |
| 2571 | vcipher $out0,$out0,v24 |
| 2572 | vcipher $out1,$out1,v24 |
| 2573 | vcipher $out2,$out2,v24 |
| 2574 | vcipher $out3,$out3,v24 |
| 2575 | vcipher $out4,$out4,v24 |
| 2576 | vcipher $out5,$out5,v24 |
| 2577 | lvx v24,$x20,$key_ # round[3] |
| 2578 | addi $key_,$key_,0x20 |
| 2579 | |
| 2580 | vcipher $out0,$out0,v25 |
| 2581 | vcipher $out1,$out1,v25 |
| 2582 | vcipher $out2,$out2,v25 |
| 2583 | vcipher $out3,$out3,v25 |
| 2584 | vcipher $out4,$out4,v25 |
| 2585 | vcipher $out5,$out5,v25 |
| 2586 | lvx v25,$x10,$key_ # round[4] |
| 2587 | bdnz Loop_xts_enc6x |
| 2588 | |
| 2589 | subic $len,$len,96 # $len-=96 |
| 2590 | vxor $in0,$twk0,v31 # xor with last round key |
| 2591 | vcipher $out0,$out0,v24 |
| 2592 | vcipher $out1,$out1,v24 |
| 2593 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2594 | vxor $twk0,$tweak,$rndkey0 |
| 2595 | vaddubm $tweak,$tweak,$tweak |
| 2596 | vcipher $out2,$out2,v24 |
| 2597 | vcipher $out3,$out3,v24 |
| 2598 | vsldoi $tmp,$tmp,$tmp,15 |
| 2599 | vcipher $out4,$out4,v24 |
| 2600 | vcipher $out5,$out5,v24 |
| 2601 | |
| 2602 | subfe. r0,r0,r0 # borrow?-1:0 |
| 2603 | vand $tmp,$tmp,$eighty7 |
| 2604 | vcipher $out0,$out0,v25 |
| 2605 | vcipher $out1,$out1,v25 |
| 2606 | vxor $tweak,$tweak,$tmp |
| 2607 | vcipher $out2,$out2,v25 |
| 2608 | vcipher $out3,$out3,v25 |
| 2609 | vxor $in1,$twk1,v31 |
| 2610 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2611 | vxor $twk1,$tweak,$rndkey0 |
| 2612 | vcipher $out4,$out4,v25 |
| 2613 | vcipher $out5,$out5,v25 |
| 2614 | |
| 2615 | and r0,r0,$len |
| 2616 | vaddubm $tweak,$tweak,$tweak |
| 2617 | vsldoi $tmp,$tmp,$tmp,15 |
| 2618 | vcipher $out0,$out0,v26 |
| 2619 | vcipher $out1,$out1,v26 |
| 2620 | vand $tmp,$tmp,$eighty7 |
| 2621 | vcipher $out2,$out2,v26 |
| 2622 | vcipher $out3,$out3,v26 |
| 2623 | vxor $tweak,$tweak,$tmp |
| 2624 | vcipher $out4,$out4,v26 |
| 2625 | vcipher $out5,$out5,v26 |
| 2626 | |
| 2627 | add $inp,$inp,r0 # $inp is adjusted in such |
| 2628 | # way that at exit from the |
| 2629 | # loop inX-in5 are loaded |
| 2630 | # with last "words" |
| 2631 | vxor $in2,$twk2,v31 |
| 2632 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2633 | vxor $twk2,$tweak,$rndkey0 |
| 2634 | vaddubm $tweak,$tweak,$tweak |
| 2635 | vcipher $out0,$out0,v27 |
| 2636 | vcipher $out1,$out1,v27 |
| 2637 | vsldoi $tmp,$tmp,$tmp,15 |
| 2638 | vcipher $out2,$out2,v27 |
| 2639 | vcipher $out3,$out3,v27 |
| 2640 | vand $tmp,$tmp,$eighty7 |
| 2641 | vcipher $out4,$out4,v27 |
| 2642 | vcipher $out5,$out5,v27 |
| 2643 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 2644 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 2645 | vxor $tweak,$tweak,$tmp |
| 2646 | vcipher $out0,$out0,v28 |
| 2647 | vcipher $out1,$out1,v28 |
| 2648 | vxor $in3,$twk3,v31 |
| 2649 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2650 | vxor $twk3,$tweak,$rndkey0 |
| 2651 | vcipher $out2,$out2,v28 |
| 2652 | vcipher $out3,$out3,v28 |
| 2653 | vaddubm $tweak,$tweak,$tweak |
| 2654 | vsldoi $tmp,$tmp,$tmp,15 |
| 2655 | vcipher $out4,$out4,v28 |
| 2656 | vcipher $out5,$out5,v28 |
| 2657 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 2658 | vand $tmp,$tmp,$eighty7 |
| 2659 | |
| 2660 | vcipher $out0,$out0,v29 |
| 2661 | vcipher $out1,$out1,v29 |
| 2662 | vxor $tweak,$tweak,$tmp |
| 2663 | vcipher $out2,$out2,v29 |
| 2664 | vcipher $out3,$out3,v29 |
| 2665 | vxor $in4,$twk4,v31 |
| 2666 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2667 | vxor $twk4,$tweak,$rndkey0 |
| 2668 | vcipher $out4,$out4,v29 |
| 2669 | vcipher $out5,$out5,v29 |
| 2670 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 2671 | vaddubm $tweak,$tweak,$tweak |
| 2672 | vsldoi $tmp,$tmp,$tmp,15 |
| 2673 | |
| 2674 | vcipher $out0,$out0,v30 |
| 2675 | vcipher $out1,$out1,v30 |
| 2676 | vand $tmp,$tmp,$eighty7 |
| 2677 | vcipher $out2,$out2,v30 |
| 2678 | vcipher $out3,$out3,v30 |
| 2679 | vxor $tweak,$tweak,$tmp |
| 2680 | vcipher $out4,$out4,v30 |
| 2681 | vcipher $out5,$out5,v30 |
| 2682 | vxor $in5,$twk5,v31 |
| 2683 | vsrab $tmp,$tweak,$seven # next tweak value |
| 2684 | vxor $twk5,$tweak,$rndkey0 |
| 2685 | |
| 2686 | vcipherlast $out0,$out0,$in0 |
| 2687 | lvx_u $in0,$x00,$inp # load next input block |
| 2688 | vaddubm $tweak,$tweak,$tweak |
| 2689 | vsldoi $tmp,$tmp,$tmp,15 |
| 2690 | vcipherlast $out1,$out1,$in1 |
| 2691 | lvx_u $in1,$x10,$inp |
| 2692 | vcipherlast $out2,$out2,$in2 |
| 2693 | le?vperm $in0,$in0,$in0,$leperm |
| 2694 | lvx_u $in2,$x20,$inp |
| 2695 | vand $tmp,$tmp,$eighty7 |
| 2696 | vcipherlast $out3,$out3,$in3 |
| 2697 | le?vperm $in1,$in1,$in1,$leperm |
| 2698 | lvx_u $in3,$x30,$inp |
| 2699 | vcipherlast $out4,$out4,$in4 |
| 2700 | le?vperm $in2,$in2,$in2,$leperm |
| 2701 | lvx_u $in4,$x40,$inp |
| 2702 | vxor $tweak,$tweak,$tmp |
| 2703 | vcipherlast $tmp,$out5,$in5 # last block might be needed |
| 2704 | # in stealing mode |
| 2705 | le?vperm $in3,$in3,$in3,$leperm |
| 2706 | lvx_u $in5,$x50,$inp |
| 2707 | addi $inp,$inp,0x60 |
| 2708 | le?vperm $in4,$in4,$in4,$leperm |
| 2709 | le?vperm $in5,$in5,$in5,$leperm |
| 2710 | |
| 2711 | le?vperm $out0,$out0,$out0,$leperm |
| 2712 | le?vperm $out1,$out1,$out1,$leperm |
| 2713 | stvx_u $out0,$x00,$out # store output |
| 2714 | vxor $out0,$in0,$twk0 |
| 2715 | le?vperm $out2,$out2,$out2,$leperm |
| 2716 | stvx_u $out1,$x10,$out |
| 2717 | vxor $out1,$in1,$twk1 |
| 2718 | le?vperm $out3,$out3,$out3,$leperm |
| 2719 | stvx_u $out2,$x20,$out |
| 2720 | vxor $out2,$in2,$twk2 |
| 2721 | le?vperm $out4,$out4,$out4,$leperm |
| 2722 | stvx_u $out3,$x30,$out |
| 2723 | vxor $out3,$in3,$twk3 |
| 2724 | le?vperm $out5,$tmp,$tmp,$leperm |
| 2725 | stvx_u $out4,$x40,$out |
| 2726 | vxor $out4,$in4,$twk4 |
| 2727 | le?stvx_u $out5,$x50,$out |
| 2728 | be?stvx_u $tmp, $x50,$out |
| 2729 | vxor $out5,$in5,$twk5 |
| 2730 | addi $out,$out,0x60 |
| 2731 | |
| 2732 | mtctr $rounds |
| 2733 | beq Loop_xts_enc6x # did $len-=96 borrow? |
| 2734 | |
| 2735 | addic. $len,$len,0x60 |
| 2736 | beq Lxts_enc6x_zero |
| 2737 | cmpwi $len,0x20 |
| 2738 | blt Lxts_enc6x_one |
| 2739 | nop |
| 2740 | beq Lxts_enc6x_two |
| 2741 | cmpwi $len,0x40 |
| 2742 | blt Lxts_enc6x_three |
| 2743 | nop |
| 2744 | beq Lxts_enc6x_four |
| 2745 | |
| 2746 | Lxts_enc6x_five: |
| 2747 | vxor $out0,$in1,$twk0 |
| 2748 | vxor $out1,$in2,$twk1 |
| 2749 | vxor $out2,$in3,$twk2 |
| 2750 | vxor $out3,$in4,$twk3 |
| 2751 | vxor $out4,$in5,$twk4 |
| 2752 | |
| 2753 | bl _aesp8_xts_enc5x |
| 2754 | |
| 2755 | le?vperm $out0,$out0,$out0,$leperm |
| 2756 | vmr $twk0,$twk5 # unused tweak |
| 2757 | le?vperm $out1,$out1,$out1,$leperm |
| 2758 | stvx_u $out0,$x00,$out # store output |
| 2759 | le?vperm $out2,$out2,$out2,$leperm |
| 2760 | stvx_u $out1,$x10,$out |
| 2761 | le?vperm $out3,$out3,$out3,$leperm |
| 2762 | stvx_u $out2,$x20,$out |
| 2763 | vxor $tmp,$out4,$twk5 # last block prep for stealing |
| 2764 | le?vperm $out4,$out4,$out4,$leperm |
| 2765 | stvx_u $out3,$x30,$out |
| 2766 | stvx_u $out4,$x40,$out |
| 2767 | addi $out,$out,0x50 |
| 2768 | bne Lxts_enc6x_steal |
| 2769 | b Lxts_enc6x_done |
| 2770 | |
| 2771 | .align 4 |
| 2772 | Lxts_enc6x_four: |
| 2773 | vxor $out0,$in2,$twk0 |
| 2774 | vxor $out1,$in3,$twk1 |
| 2775 | vxor $out2,$in4,$twk2 |
| 2776 | vxor $out3,$in5,$twk3 |
| 2777 | vxor $out4,$out4,$out4 |
| 2778 | |
| 2779 | bl _aesp8_xts_enc5x |
| 2780 | |
| 2781 | le?vperm $out0,$out0,$out0,$leperm |
| 2782 | vmr $twk0,$twk4 # unused tweak |
| 2783 | le?vperm $out1,$out1,$out1,$leperm |
| 2784 | stvx_u $out0,$x00,$out # store output |
| 2785 | le?vperm $out2,$out2,$out2,$leperm |
| 2786 | stvx_u $out1,$x10,$out |
| 2787 | vxor $tmp,$out3,$twk4 # last block prep for stealing |
| 2788 | le?vperm $out3,$out3,$out3,$leperm |
| 2789 | stvx_u $out2,$x20,$out |
| 2790 | stvx_u $out3,$x30,$out |
| 2791 | addi $out,$out,0x40 |
| 2792 | bne Lxts_enc6x_steal |
| 2793 | b Lxts_enc6x_done |
| 2794 | |
| 2795 | .align 4 |
| 2796 | Lxts_enc6x_three: |
| 2797 | vxor $out0,$in3,$twk0 |
| 2798 | vxor $out1,$in4,$twk1 |
| 2799 | vxor $out2,$in5,$twk2 |
| 2800 | vxor $out3,$out3,$out3 |
| 2801 | vxor $out4,$out4,$out4 |
| 2802 | |
| 2803 | bl _aesp8_xts_enc5x |
| 2804 | |
| 2805 | le?vperm $out0,$out0,$out0,$leperm |
| 2806 | vmr $twk0,$twk3 # unused tweak |
| 2807 | le?vperm $out1,$out1,$out1,$leperm |
| 2808 | stvx_u $out0,$x00,$out # store output |
| 2809 | vxor $tmp,$out2,$twk3 # last block prep for stealing |
| 2810 | le?vperm $out2,$out2,$out2,$leperm |
| 2811 | stvx_u $out1,$x10,$out |
| 2812 | stvx_u $out2,$x20,$out |
| 2813 | addi $out,$out,0x30 |
| 2814 | bne Lxts_enc6x_steal |
| 2815 | b Lxts_enc6x_done |
| 2816 | |
| 2817 | .align 4 |
| 2818 | Lxts_enc6x_two: |
| 2819 | vxor $out0,$in4,$twk0 |
| 2820 | vxor $out1,$in5,$twk1 |
| 2821 | vxor $out2,$out2,$out2 |
| 2822 | vxor $out3,$out3,$out3 |
| 2823 | vxor $out4,$out4,$out4 |
| 2824 | |
| 2825 | bl _aesp8_xts_enc5x |
| 2826 | |
| 2827 | le?vperm $out0,$out0,$out0,$leperm |
| 2828 | vmr $twk0,$twk2 # unused tweak |
| 2829 | vxor $tmp,$out1,$twk2 # last block prep for stealing |
| 2830 | le?vperm $out1,$out1,$out1,$leperm |
| 2831 | stvx_u $out0,$x00,$out # store output |
| 2832 | stvx_u $out1,$x10,$out |
| 2833 | addi $out,$out,0x20 |
| 2834 | bne Lxts_enc6x_steal |
| 2835 | b Lxts_enc6x_done |
| 2836 | |
| 2837 | .align 4 |
| 2838 | Lxts_enc6x_one: |
| 2839 | vxor $out0,$in5,$twk0 |
| 2840 | nop |
| 2841 | Loop_xts_enc1x: |
| 2842 | vcipher $out0,$out0,v24 |
| 2843 | lvx v24,$x20,$key_ # round[3] |
| 2844 | addi $key_,$key_,0x20 |
| 2845 | |
| 2846 | vcipher $out0,$out0,v25 |
| 2847 | lvx v25,$x10,$key_ # round[4] |
| 2848 | bdnz Loop_xts_enc1x |
| 2849 | |
| 2850 | add $inp,$inp,$taillen |
| 2851 | cmpwi $taillen,0 |
| 2852 | vcipher $out0,$out0,v24 |
| 2853 | |
| 2854 | subi $inp,$inp,16 |
| 2855 | vcipher $out0,$out0,v25 |
| 2856 | |
| 2857 | lvsr $inpperm,0,$taillen |
| 2858 | vcipher $out0,$out0,v26 |
| 2859 | |
| 2860 | lvx_u $in0,0,$inp |
| 2861 | vcipher $out0,$out0,v27 |
| 2862 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 2863 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 2864 | vcipher $out0,$out0,v28 |
| 2865 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 2866 | |
| 2867 | vcipher $out0,$out0,v29 |
| 2868 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 2869 | vxor $twk0,$twk0,v31 |
| 2870 | |
| 2871 | le?vperm $in0,$in0,$in0,$leperm |
| 2872 | vcipher $out0,$out0,v30 |
| 2873 | |
| 2874 | vperm $in0,$in0,$in0,$inpperm |
| 2875 | vcipherlast $out0,$out0,$twk0 |
| 2876 | |
| 2877 | vmr $twk0,$twk1 # unused tweak |
| 2878 | vxor $tmp,$out0,$twk1 # last block prep for stealing |
| 2879 | le?vperm $out0,$out0,$out0,$leperm |
| 2880 | stvx_u $out0,$x00,$out # store output |
| 2881 | addi $out,$out,0x10 |
| 2882 | bne Lxts_enc6x_steal |
| 2883 | b Lxts_enc6x_done |
| 2884 | |
| 2885 | .align 4 |
| 2886 | Lxts_enc6x_zero: |
| 2887 | cmpwi $taillen,0 |
| 2888 | beq Lxts_enc6x_done |
| 2889 | |
| 2890 | add $inp,$inp,$taillen |
| 2891 | subi $inp,$inp,16 |
| 2892 | lvx_u $in0,0,$inp |
| 2893 | lvsr $inpperm,0,$taillen # $in5 is no more |
| 2894 | le?vperm $in0,$in0,$in0,$leperm |
| 2895 | vperm $in0,$in0,$in0,$inpperm |
| 2896 | vxor $tmp,$tmp,$twk0 |
| 2897 | Lxts_enc6x_steal: |
| 2898 | vxor $in0,$in0,$twk0 |
| 2899 | vxor $out0,$out0,$out0 |
| 2900 | vspltisb $out1,-1 |
| 2901 | vperm $out0,$out0,$out1,$inpperm |
| 2902 | vsel $out0,$in0,$tmp,$out0 # $tmp is last block, remember? |
| 2903 | |
| 2904 | subi r30,$out,17 |
| 2905 | subi $out,$out,16 |
| 2906 | mtctr $taillen |
| 2907 | Loop_xts_enc6x_steal: |
| 2908 | lbzu r0,1(r30) |
| 2909 | stb r0,16(r30) |
| 2910 | bdnz Loop_xts_enc6x_steal |
| 2911 | |
| 2912 | li $taillen,0 |
| 2913 | mtctr $rounds |
| 2914 | b Loop_xts_enc1x # one more time... |
| 2915 | |
| 2916 | .align 4 |
| 2917 | Lxts_enc6x_done: |
| 2918 | ${UCMP}i $ivp,0 |
| 2919 | beq Lxts_enc6x_ret |
| 2920 | |
| 2921 | vxor $tweak,$twk0,$rndkey0 |
| 2922 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 2923 | stvx_u $tweak,0,$ivp |
| 2924 | |
| 2925 | Lxts_enc6x_ret: |
| 2926 | mtlr r11 |
| 2927 | li r10,`$FRAME+15` |
| 2928 | li r11,`$FRAME+31` |
| 2929 | stvx $seven,r10,$sp # wipe copies of round keys |
| 2930 | addi r10,r10,32 |
| 2931 | stvx $seven,r11,$sp |
| 2932 | addi r11,r11,32 |
| 2933 | stvx $seven,r10,$sp |
| 2934 | addi r10,r10,32 |
| 2935 | stvx $seven,r11,$sp |
| 2936 | addi r11,r11,32 |
| 2937 | stvx $seven,r10,$sp |
| 2938 | addi r10,r10,32 |
| 2939 | stvx $seven,r11,$sp |
| 2940 | addi r11,r11,32 |
| 2941 | stvx $seven,r10,$sp |
| 2942 | addi r10,r10,32 |
| 2943 | stvx $seven,r11,$sp |
| 2944 | addi r11,r11,32 |
| 2945 | |
| 2946 | mtspr 256,$vrsave |
| 2947 | lvx v20,r10,$sp # ABI says so |
| 2948 | addi r10,r10,32 |
| 2949 | lvx v21,r11,$sp |
| 2950 | addi r11,r11,32 |
| 2951 | lvx v22,r10,$sp |
| 2952 | addi r10,r10,32 |
| 2953 | lvx v23,r11,$sp |
| 2954 | addi r11,r11,32 |
| 2955 | lvx v24,r10,$sp |
| 2956 | addi r10,r10,32 |
| 2957 | lvx v25,r11,$sp |
| 2958 | addi r11,r11,32 |
| 2959 | lvx v26,r10,$sp |
| 2960 | addi r10,r10,32 |
| 2961 | lvx v27,r11,$sp |
| 2962 | addi r11,r11,32 |
| 2963 | lvx v28,r10,$sp |
| 2964 | addi r10,r10,32 |
| 2965 | lvx v29,r11,$sp |
| 2966 | addi r11,r11,32 |
| 2967 | lvx v30,r10,$sp |
| 2968 | lvx v31,r11,$sp |
| 2969 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 2970 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 2971 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 2972 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 2973 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 2974 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 2975 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 2976 | blr |
| 2977 | .long 0 |
| 2978 | .byte 0,12,0x04,1,0x80,6,6,0 |
| 2979 | .long 0 |
| 2980 | |
| 2981 | .align 5 |
| 2982 | _aesp8_xts_enc5x: |
| 2983 | vcipher $out0,$out0,v24 |
| 2984 | vcipher $out1,$out1,v24 |
| 2985 | vcipher $out2,$out2,v24 |
| 2986 | vcipher $out3,$out3,v24 |
| 2987 | vcipher $out4,$out4,v24 |
| 2988 | lvx v24,$x20,$key_ # round[3] |
| 2989 | addi $key_,$key_,0x20 |
| 2990 | |
| 2991 | vcipher $out0,$out0,v25 |
| 2992 | vcipher $out1,$out1,v25 |
| 2993 | vcipher $out2,$out2,v25 |
| 2994 | vcipher $out3,$out3,v25 |
| 2995 | vcipher $out4,$out4,v25 |
| 2996 | lvx v25,$x10,$key_ # round[4] |
| 2997 | bdnz _aesp8_xts_enc5x |
| 2998 | |
| 2999 | add $inp,$inp,$taillen |
| 3000 | cmpwi $taillen,0 |
| 3001 | vcipher $out0,$out0,v24 |
| 3002 | vcipher $out1,$out1,v24 |
| 3003 | vcipher $out2,$out2,v24 |
| 3004 | vcipher $out3,$out3,v24 |
| 3005 | vcipher $out4,$out4,v24 |
| 3006 | |
| 3007 | subi $inp,$inp,16 |
| 3008 | vcipher $out0,$out0,v25 |
| 3009 | vcipher $out1,$out1,v25 |
| 3010 | vcipher $out2,$out2,v25 |
| 3011 | vcipher $out3,$out3,v25 |
| 3012 | vcipher $out4,$out4,v25 |
| 3013 | vxor $twk0,$twk0,v31 |
| 3014 | |
| 3015 | vcipher $out0,$out0,v26 |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 3016 | lvsr $inpperm,0,$taillen # $in5 is no more |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3017 | vcipher $out1,$out1,v26 |
| 3018 | vcipher $out2,$out2,v26 |
| 3019 | vcipher $out3,$out3,v26 |
| 3020 | vcipher $out4,$out4,v26 |
| 3021 | vxor $in1,$twk1,v31 |
| 3022 | |
| 3023 | vcipher $out0,$out0,v27 |
| 3024 | lvx_u $in0,0,$inp |
| 3025 | vcipher $out1,$out1,v27 |
| 3026 | vcipher $out2,$out2,v27 |
| 3027 | vcipher $out3,$out3,v27 |
| 3028 | vcipher $out4,$out4,v27 |
| 3029 | vxor $in2,$twk2,v31 |
| 3030 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3031 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3032 | vcipher $out0,$out0,v28 |
| 3033 | vcipher $out1,$out1,v28 |
| 3034 | vcipher $out2,$out2,v28 |
| 3035 | vcipher $out3,$out3,v28 |
| 3036 | vcipher $out4,$out4,v28 |
| 3037 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3038 | vxor $in3,$twk3,v31 |
| 3039 | |
| 3040 | vcipher $out0,$out0,v29 |
| 3041 | le?vperm $in0,$in0,$in0,$leperm |
| 3042 | vcipher $out1,$out1,v29 |
| 3043 | vcipher $out2,$out2,v29 |
| 3044 | vcipher $out3,$out3,v29 |
| 3045 | vcipher $out4,$out4,v29 |
| 3046 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3047 | vxor $in4,$twk4,v31 |
| 3048 | |
| 3049 | vcipher $out0,$out0,v30 |
| 3050 | vperm $in0,$in0,$in0,$inpperm |
| 3051 | vcipher $out1,$out1,v30 |
| 3052 | vcipher $out2,$out2,v30 |
| 3053 | vcipher $out3,$out3,v30 |
| 3054 | vcipher $out4,$out4,v30 |
| 3055 | |
| 3056 | vcipherlast $out0,$out0,$twk0 |
| 3057 | vcipherlast $out1,$out1,$in1 |
| 3058 | vcipherlast $out2,$out2,$in2 |
| 3059 | vcipherlast $out3,$out3,$in3 |
| 3060 | vcipherlast $out4,$out4,$in4 |
| 3061 | blr |
| 3062 | .long 0 |
| 3063 | .byte 0,12,0x14,0,0,0,0,0 |
| 3064 | |
| 3065 | .align 5 |
| 3066 | _aesp8_xts_decrypt6x: |
| 3067 | $STU $sp,-`($FRAME+21*16+6*$SIZE_T)`($sp) |
| 3068 | mflr r11 |
| 3069 | li r7,`$FRAME+8*16+15` |
| 3070 | li r3,`$FRAME+8*16+31` |
| 3071 | $PUSH r11,`$FRAME+21*16+6*$SIZE_T+$LRSAVE`($sp) |
| 3072 | stvx v20,r7,$sp # ABI says so |
| 3073 | addi r7,r7,32 |
| 3074 | stvx v21,r3,$sp |
| 3075 | addi r3,r3,32 |
| 3076 | stvx v22,r7,$sp |
| 3077 | addi r7,r7,32 |
| 3078 | stvx v23,r3,$sp |
| 3079 | addi r3,r3,32 |
| 3080 | stvx v24,r7,$sp |
| 3081 | addi r7,r7,32 |
| 3082 | stvx v25,r3,$sp |
| 3083 | addi r3,r3,32 |
| 3084 | stvx v26,r7,$sp |
| 3085 | addi r7,r7,32 |
| 3086 | stvx v27,r3,$sp |
| 3087 | addi r3,r3,32 |
| 3088 | stvx v28,r7,$sp |
| 3089 | addi r7,r7,32 |
| 3090 | stvx v29,r3,$sp |
| 3091 | addi r3,r3,32 |
| 3092 | stvx v30,r7,$sp |
| 3093 | stvx v31,r3,$sp |
| 3094 | li r0,-1 |
| 3095 | stw $vrsave,`$FRAME+21*16-4`($sp) # save vrsave |
| 3096 | li $x10,0x10 |
| 3097 | $PUSH r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 3098 | li $x20,0x20 |
| 3099 | $PUSH r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 3100 | li $x30,0x30 |
| 3101 | $PUSH r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 3102 | li $x40,0x40 |
| 3103 | $PUSH r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 3104 | li $x50,0x50 |
| 3105 | $PUSH r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 3106 | li $x60,0x60 |
| 3107 | $PUSH r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 3108 | li $x70,0x70 |
| 3109 | mtspr 256,r0 |
| 3110 | |
| 3111 | subi $rounds,$rounds,3 # -4 in total |
| 3112 | |
| 3113 | lvx $rndkey0,$x00,$key1 # load key schedule |
| 3114 | lvx v30,$x10,$key1 |
| 3115 | addi $key1,$key1,0x20 |
| 3116 | lvx v31,$x00,$key1 |
| 3117 | ?vperm $rndkey0,$rndkey0,v30,$keyperm |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3118 | addi $key_,$sp,`$FRAME+15` |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3119 | mtctr $rounds |
| 3120 | |
| 3121 | Load_xts_dec_key: |
| 3122 | ?vperm v24,v30,v31,$keyperm |
| 3123 | lvx v30,$x10,$key1 |
| 3124 | addi $key1,$key1,0x20 |
| 3125 | stvx v24,$x00,$key_ # off-load round[1] |
| 3126 | ?vperm v25,v31,v30,$keyperm |
| 3127 | lvx v31,$x00,$key1 |
| 3128 | stvx v25,$x10,$key_ # off-load round[2] |
| 3129 | addi $key_,$key_,0x20 |
| 3130 | bdnz Load_xts_dec_key |
| 3131 | |
| 3132 | lvx v26,$x10,$key1 |
| 3133 | ?vperm v24,v30,v31,$keyperm |
| 3134 | lvx v27,$x20,$key1 |
| 3135 | stvx v24,$x00,$key_ # off-load round[3] |
| 3136 | ?vperm v25,v31,v26,$keyperm |
| 3137 | lvx v28,$x30,$key1 |
| 3138 | stvx v25,$x10,$key_ # off-load round[4] |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3139 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3140 | ?vperm v26,v26,v27,$keyperm |
| 3141 | lvx v29,$x40,$key1 |
| 3142 | ?vperm v27,v27,v28,$keyperm |
| 3143 | lvx v30,$x50,$key1 |
| 3144 | ?vperm v28,v28,v29,$keyperm |
| 3145 | lvx v31,$x60,$key1 |
| 3146 | ?vperm v29,v29,v30,$keyperm |
| 3147 | lvx $twk5,$x70,$key1 # borrow $twk5 |
| 3148 | ?vperm v30,v30,v31,$keyperm |
| 3149 | lvx v24,$x00,$key_ # pre-load round[1] |
| 3150 | ?vperm v31,v31,$twk5,$keyperm |
| 3151 | lvx v25,$x10,$key_ # pre-load round[2] |
| 3152 | |
| 3153 | vperm $in0,$inout,$inptail,$inpperm |
| 3154 | subi $inp,$inp,31 # undo "caller" |
| 3155 | vxor $twk0,$tweak,$rndkey0 |
| 3156 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3157 | vaddubm $tweak,$tweak,$tweak |
| 3158 | vsldoi $tmp,$tmp,$tmp,15 |
| 3159 | vand $tmp,$tmp,$eighty7 |
| 3160 | vxor $out0,$in0,$twk0 |
| 3161 | vxor $tweak,$tweak,$tmp |
| 3162 | |
| 3163 | lvx_u $in1,$x10,$inp |
| 3164 | vxor $twk1,$tweak,$rndkey0 |
| 3165 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3166 | vaddubm $tweak,$tweak,$tweak |
| 3167 | vsldoi $tmp,$tmp,$tmp,15 |
| 3168 | le?vperm $in1,$in1,$in1,$leperm |
| 3169 | vand $tmp,$tmp,$eighty7 |
| 3170 | vxor $out1,$in1,$twk1 |
| 3171 | vxor $tweak,$tweak,$tmp |
| 3172 | |
| 3173 | lvx_u $in2,$x20,$inp |
| 3174 | andi. $taillen,$len,15 |
| 3175 | vxor $twk2,$tweak,$rndkey0 |
| 3176 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3177 | vaddubm $tweak,$tweak,$tweak |
| 3178 | vsldoi $tmp,$tmp,$tmp,15 |
| 3179 | le?vperm $in2,$in2,$in2,$leperm |
| 3180 | vand $tmp,$tmp,$eighty7 |
| 3181 | vxor $out2,$in2,$twk2 |
| 3182 | vxor $tweak,$tweak,$tmp |
| 3183 | |
| 3184 | lvx_u $in3,$x30,$inp |
| 3185 | sub $len,$len,$taillen |
| 3186 | vxor $twk3,$tweak,$rndkey0 |
| 3187 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3188 | vaddubm $tweak,$tweak,$tweak |
| 3189 | vsldoi $tmp,$tmp,$tmp,15 |
| 3190 | le?vperm $in3,$in3,$in3,$leperm |
| 3191 | vand $tmp,$tmp,$eighty7 |
| 3192 | vxor $out3,$in3,$twk3 |
| 3193 | vxor $tweak,$tweak,$tmp |
| 3194 | |
| 3195 | lvx_u $in4,$x40,$inp |
| 3196 | subi $len,$len,0x60 |
| 3197 | vxor $twk4,$tweak,$rndkey0 |
| 3198 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3199 | vaddubm $tweak,$tweak,$tweak |
| 3200 | vsldoi $tmp,$tmp,$tmp,15 |
| 3201 | le?vperm $in4,$in4,$in4,$leperm |
| 3202 | vand $tmp,$tmp,$eighty7 |
| 3203 | vxor $out4,$in4,$twk4 |
| 3204 | vxor $tweak,$tweak,$tmp |
| 3205 | |
| 3206 | lvx_u $in5,$x50,$inp |
| 3207 | addi $inp,$inp,0x60 |
| 3208 | vxor $twk5,$tweak,$rndkey0 |
| 3209 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3210 | vaddubm $tweak,$tweak,$tweak |
| 3211 | vsldoi $tmp,$tmp,$tmp,15 |
| 3212 | le?vperm $in5,$in5,$in5,$leperm |
| 3213 | vand $tmp,$tmp,$eighty7 |
| 3214 | vxor $out5,$in5,$twk5 |
| 3215 | vxor $tweak,$tweak,$tmp |
| 3216 | |
| 3217 | vxor v31,v31,$rndkey0 |
| 3218 | mtctr $rounds |
| 3219 | b Loop_xts_dec6x |
| 3220 | |
| 3221 | .align 5 |
| 3222 | Loop_xts_dec6x: |
| 3223 | vncipher $out0,$out0,v24 |
| 3224 | vncipher $out1,$out1,v24 |
| 3225 | vncipher $out2,$out2,v24 |
| 3226 | vncipher $out3,$out3,v24 |
| 3227 | vncipher $out4,$out4,v24 |
| 3228 | vncipher $out5,$out5,v24 |
| 3229 | lvx v24,$x20,$key_ # round[3] |
| 3230 | addi $key_,$key_,0x20 |
| 3231 | |
| 3232 | vncipher $out0,$out0,v25 |
| 3233 | vncipher $out1,$out1,v25 |
| 3234 | vncipher $out2,$out2,v25 |
| 3235 | vncipher $out3,$out3,v25 |
| 3236 | vncipher $out4,$out4,v25 |
| 3237 | vncipher $out5,$out5,v25 |
| 3238 | lvx v25,$x10,$key_ # round[4] |
| 3239 | bdnz Loop_xts_dec6x |
| 3240 | |
| 3241 | subic $len,$len,96 # $len-=96 |
| 3242 | vxor $in0,$twk0,v31 # xor with last round key |
| 3243 | vncipher $out0,$out0,v24 |
| 3244 | vncipher $out1,$out1,v24 |
| 3245 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3246 | vxor $twk0,$tweak,$rndkey0 |
| 3247 | vaddubm $tweak,$tweak,$tweak |
| 3248 | vncipher $out2,$out2,v24 |
| 3249 | vncipher $out3,$out3,v24 |
| 3250 | vsldoi $tmp,$tmp,$tmp,15 |
| 3251 | vncipher $out4,$out4,v24 |
| 3252 | vncipher $out5,$out5,v24 |
| 3253 | |
| 3254 | subfe. r0,r0,r0 # borrow?-1:0 |
| 3255 | vand $tmp,$tmp,$eighty7 |
| 3256 | vncipher $out0,$out0,v25 |
| 3257 | vncipher $out1,$out1,v25 |
| 3258 | vxor $tweak,$tweak,$tmp |
| 3259 | vncipher $out2,$out2,v25 |
| 3260 | vncipher $out3,$out3,v25 |
| 3261 | vxor $in1,$twk1,v31 |
| 3262 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3263 | vxor $twk1,$tweak,$rndkey0 |
| 3264 | vncipher $out4,$out4,v25 |
| 3265 | vncipher $out5,$out5,v25 |
| 3266 | |
| 3267 | and r0,r0,$len |
| 3268 | vaddubm $tweak,$tweak,$tweak |
| 3269 | vsldoi $tmp,$tmp,$tmp,15 |
| 3270 | vncipher $out0,$out0,v26 |
| 3271 | vncipher $out1,$out1,v26 |
| 3272 | vand $tmp,$tmp,$eighty7 |
| 3273 | vncipher $out2,$out2,v26 |
| 3274 | vncipher $out3,$out3,v26 |
| 3275 | vxor $tweak,$tweak,$tmp |
| 3276 | vncipher $out4,$out4,v26 |
| 3277 | vncipher $out5,$out5,v26 |
| 3278 | |
| 3279 | add $inp,$inp,r0 # $inp is adjusted in such |
| 3280 | # way that at exit from the |
| 3281 | # loop inX-in5 are loaded |
| 3282 | # with last "words" |
| 3283 | vxor $in2,$twk2,v31 |
| 3284 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3285 | vxor $twk2,$tweak,$rndkey0 |
| 3286 | vaddubm $tweak,$tweak,$tweak |
| 3287 | vncipher $out0,$out0,v27 |
| 3288 | vncipher $out1,$out1,v27 |
| 3289 | vsldoi $tmp,$tmp,$tmp,15 |
| 3290 | vncipher $out2,$out2,v27 |
| 3291 | vncipher $out3,$out3,v27 |
| 3292 | vand $tmp,$tmp,$eighty7 |
| 3293 | vncipher $out4,$out4,v27 |
| 3294 | vncipher $out5,$out5,v27 |
| 3295 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3296 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3297 | vxor $tweak,$tweak,$tmp |
| 3298 | vncipher $out0,$out0,v28 |
| 3299 | vncipher $out1,$out1,v28 |
| 3300 | vxor $in3,$twk3,v31 |
| 3301 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3302 | vxor $twk3,$tweak,$rndkey0 |
| 3303 | vncipher $out2,$out2,v28 |
| 3304 | vncipher $out3,$out3,v28 |
| 3305 | vaddubm $tweak,$tweak,$tweak |
| 3306 | vsldoi $tmp,$tmp,$tmp,15 |
| 3307 | vncipher $out4,$out4,v28 |
| 3308 | vncipher $out5,$out5,v28 |
| 3309 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3310 | vand $tmp,$tmp,$eighty7 |
| 3311 | |
| 3312 | vncipher $out0,$out0,v29 |
| 3313 | vncipher $out1,$out1,v29 |
| 3314 | vxor $tweak,$tweak,$tmp |
| 3315 | vncipher $out2,$out2,v29 |
| 3316 | vncipher $out3,$out3,v29 |
| 3317 | vxor $in4,$twk4,v31 |
| 3318 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3319 | vxor $twk4,$tweak,$rndkey0 |
| 3320 | vncipher $out4,$out4,v29 |
| 3321 | vncipher $out5,$out5,v29 |
| 3322 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3323 | vaddubm $tweak,$tweak,$tweak |
| 3324 | vsldoi $tmp,$tmp,$tmp,15 |
| 3325 | |
| 3326 | vncipher $out0,$out0,v30 |
| 3327 | vncipher $out1,$out1,v30 |
| 3328 | vand $tmp,$tmp,$eighty7 |
| 3329 | vncipher $out2,$out2,v30 |
| 3330 | vncipher $out3,$out3,v30 |
| 3331 | vxor $tweak,$tweak,$tmp |
| 3332 | vncipher $out4,$out4,v30 |
| 3333 | vncipher $out5,$out5,v30 |
| 3334 | vxor $in5,$twk5,v31 |
| 3335 | vsrab $tmp,$tweak,$seven # next tweak value |
| 3336 | vxor $twk5,$tweak,$rndkey0 |
| 3337 | |
| 3338 | vncipherlast $out0,$out0,$in0 |
| 3339 | lvx_u $in0,$x00,$inp # load next input block |
| 3340 | vaddubm $tweak,$tweak,$tweak |
| 3341 | vsldoi $tmp,$tmp,$tmp,15 |
| 3342 | vncipherlast $out1,$out1,$in1 |
| 3343 | lvx_u $in1,$x10,$inp |
| 3344 | vncipherlast $out2,$out2,$in2 |
| 3345 | le?vperm $in0,$in0,$in0,$leperm |
| 3346 | lvx_u $in2,$x20,$inp |
| 3347 | vand $tmp,$tmp,$eighty7 |
| 3348 | vncipherlast $out3,$out3,$in3 |
| 3349 | le?vperm $in1,$in1,$in1,$leperm |
| 3350 | lvx_u $in3,$x30,$inp |
| 3351 | vncipherlast $out4,$out4,$in4 |
| 3352 | le?vperm $in2,$in2,$in2,$leperm |
| 3353 | lvx_u $in4,$x40,$inp |
| 3354 | vxor $tweak,$tweak,$tmp |
| 3355 | vncipherlast $out5,$out5,$in5 |
| 3356 | le?vperm $in3,$in3,$in3,$leperm |
| 3357 | lvx_u $in5,$x50,$inp |
| 3358 | addi $inp,$inp,0x60 |
| 3359 | le?vperm $in4,$in4,$in4,$leperm |
| 3360 | le?vperm $in5,$in5,$in5,$leperm |
| 3361 | |
| 3362 | le?vperm $out0,$out0,$out0,$leperm |
| 3363 | le?vperm $out1,$out1,$out1,$leperm |
| 3364 | stvx_u $out0,$x00,$out # store output |
| 3365 | vxor $out0,$in0,$twk0 |
| 3366 | le?vperm $out2,$out2,$out2,$leperm |
| 3367 | stvx_u $out1,$x10,$out |
| 3368 | vxor $out1,$in1,$twk1 |
| 3369 | le?vperm $out3,$out3,$out3,$leperm |
| 3370 | stvx_u $out2,$x20,$out |
| 3371 | vxor $out2,$in2,$twk2 |
| 3372 | le?vperm $out4,$out4,$out4,$leperm |
| 3373 | stvx_u $out3,$x30,$out |
| 3374 | vxor $out3,$in3,$twk3 |
| 3375 | le?vperm $out5,$out5,$out5,$leperm |
| 3376 | stvx_u $out4,$x40,$out |
| 3377 | vxor $out4,$in4,$twk4 |
| 3378 | stvx_u $out5,$x50,$out |
| 3379 | vxor $out5,$in5,$twk5 |
| 3380 | addi $out,$out,0x60 |
| 3381 | |
| 3382 | mtctr $rounds |
| 3383 | beq Loop_xts_dec6x # did $len-=96 borrow? |
| 3384 | |
| 3385 | addic. $len,$len,0x60 |
| 3386 | beq Lxts_dec6x_zero |
| 3387 | cmpwi $len,0x20 |
| 3388 | blt Lxts_dec6x_one |
| 3389 | nop |
| 3390 | beq Lxts_dec6x_two |
| 3391 | cmpwi $len,0x40 |
| 3392 | blt Lxts_dec6x_three |
| 3393 | nop |
| 3394 | beq Lxts_dec6x_four |
| 3395 | |
| 3396 | Lxts_dec6x_five: |
| 3397 | vxor $out0,$in1,$twk0 |
| 3398 | vxor $out1,$in2,$twk1 |
| 3399 | vxor $out2,$in3,$twk2 |
| 3400 | vxor $out3,$in4,$twk3 |
| 3401 | vxor $out4,$in5,$twk4 |
| 3402 | |
| 3403 | bl _aesp8_xts_dec5x |
| 3404 | |
| 3405 | le?vperm $out0,$out0,$out0,$leperm |
| 3406 | vmr $twk0,$twk5 # unused tweak |
| 3407 | vxor $twk1,$tweak,$rndkey0 |
| 3408 | le?vperm $out1,$out1,$out1,$leperm |
| 3409 | stvx_u $out0,$x00,$out # store output |
| 3410 | vxor $out0,$in0,$twk1 |
| 3411 | le?vperm $out2,$out2,$out2,$leperm |
| 3412 | stvx_u $out1,$x10,$out |
| 3413 | le?vperm $out3,$out3,$out3,$leperm |
| 3414 | stvx_u $out2,$x20,$out |
| 3415 | le?vperm $out4,$out4,$out4,$leperm |
| 3416 | stvx_u $out3,$x30,$out |
| 3417 | stvx_u $out4,$x40,$out |
| 3418 | addi $out,$out,0x50 |
| 3419 | bne Lxts_dec6x_steal |
| 3420 | b Lxts_dec6x_done |
| 3421 | |
| 3422 | .align 4 |
| 3423 | Lxts_dec6x_four: |
| 3424 | vxor $out0,$in2,$twk0 |
| 3425 | vxor $out1,$in3,$twk1 |
| 3426 | vxor $out2,$in4,$twk2 |
| 3427 | vxor $out3,$in5,$twk3 |
| 3428 | vxor $out4,$out4,$out4 |
| 3429 | |
| 3430 | bl _aesp8_xts_dec5x |
| 3431 | |
| 3432 | le?vperm $out0,$out0,$out0,$leperm |
| 3433 | vmr $twk0,$twk4 # unused tweak |
| 3434 | vmr $twk1,$twk5 |
| 3435 | le?vperm $out1,$out1,$out1,$leperm |
| 3436 | stvx_u $out0,$x00,$out # store output |
| 3437 | vxor $out0,$in0,$twk5 |
| 3438 | le?vperm $out2,$out2,$out2,$leperm |
| 3439 | stvx_u $out1,$x10,$out |
| 3440 | le?vperm $out3,$out3,$out3,$leperm |
| 3441 | stvx_u $out2,$x20,$out |
| 3442 | stvx_u $out3,$x30,$out |
| 3443 | addi $out,$out,0x40 |
| 3444 | bne Lxts_dec6x_steal |
| 3445 | b Lxts_dec6x_done |
| 3446 | |
| 3447 | .align 4 |
| 3448 | Lxts_dec6x_three: |
| 3449 | vxor $out0,$in3,$twk0 |
| 3450 | vxor $out1,$in4,$twk1 |
| 3451 | vxor $out2,$in5,$twk2 |
| 3452 | vxor $out3,$out3,$out3 |
| 3453 | vxor $out4,$out4,$out4 |
| 3454 | |
| 3455 | bl _aesp8_xts_dec5x |
| 3456 | |
| 3457 | le?vperm $out0,$out0,$out0,$leperm |
| 3458 | vmr $twk0,$twk3 # unused tweak |
| 3459 | vmr $twk1,$twk4 |
| 3460 | le?vperm $out1,$out1,$out1,$leperm |
| 3461 | stvx_u $out0,$x00,$out # store output |
| 3462 | vxor $out0,$in0,$twk4 |
| 3463 | le?vperm $out2,$out2,$out2,$leperm |
| 3464 | stvx_u $out1,$x10,$out |
| 3465 | stvx_u $out2,$x20,$out |
| 3466 | addi $out,$out,0x30 |
| 3467 | bne Lxts_dec6x_steal |
| 3468 | b Lxts_dec6x_done |
| 3469 | |
| 3470 | .align 4 |
| 3471 | Lxts_dec6x_two: |
| 3472 | vxor $out0,$in4,$twk0 |
| 3473 | vxor $out1,$in5,$twk1 |
| 3474 | vxor $out2,$out2,$out2 |
| 3475 | vxor $out3,$out3,$out3 |
| 3476 | vxor $out4,$out4,$out4 |
| 3477 | |
| 3478 | bl _aesp8_xts_dec5x |
| 3479 | |
| 3480 | le?vperm $out0,$out0,$out0,$leperm |
| 3481 | vmr $twk0,$twk2 # unused tweak |
| 3482 | vmr $twk1,$twk3 |
| 3483 | le?vperm $out1,$out1,$out1,$leperm |
| 3484 | stvx_u $out0,$x00,$out # store output |
| 3485 | vxor $out0,$in0,$twk3 |
| 3486 | stvx_u $out1,$x10,$out |
| 3487 | addi $out,$out,0x20 |
| 3488 | bne Lxts_dec6x_steal |
| 3489 | b Lxts_dec6x_done |
| 3490 | |
| 3491 | .align 4 |
| 3492 | Lxts_dec6x_one: |
| 3493 | vxor $out0,$in5,$twk0 |
| 3494 | nop |
| 3495 | Loop_xts_dec1x: |
| 3496 | vncipher $out0,$out0,v24 |
| 3497 | lvx v24,$x20,$key_ # round[3] |
| 3498 | addi $key_,$key_,0x20 |
| 3499 | |
| 3500 | vncipher $out0,$out0,v25 |
| 3501 | lvx v25,$x10,$key_ # round[4] |
| 3502 | bdnz Loop_xts_dec1x |
| 3503 | |
| 3504 | subi r0,$taillen,1 |
| 3505 | vncipher $out0,$out0,v24 |
| 3506 | |
| 3507 | andi. r0,r0,16 |
| 3508 | cmpwi $taillen,0 |
| 3509 | vncipher $out0,$out0,v25 |
| 3510 | |
| 3511 | sub $inp,$inp,r0 |
| 3512 | vncipher $out0,$out0,v26 |
| 3513 | |
| 3514 | lvx_u $in0,0,$inp |
| 3515 | vncipher $out0,$out0,v27 |
| 3516 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3517 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3518 | vncipher $out0,$out0,v28 |
| 3519 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3520 | |
| 3521 | vncipher $out0,$out0,v29 |
| 3522 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3523 | vxor $twk0,$twk0,v31 |
| 3524 | |
| 3525 | le?vperm $in0,$in0,$in0,$leperm |
| 3526 | vncipher $out0,$out0,v30 |
| 3527 | |
| 3528 | mtctr $rounds |
| 3529 | vncipherlast $out0,$out0,$twk0 |
| 3530 | |
| 3531 | vmr $twk0,$twk1 # unused tweak |
| 3532 | vmr $twk1,$twk2 |
| 3533 | le?vperm $out0,$out0,$out0,$leperm |
| 3534 | stvx_u $out0,$x00,$out # store output |
| 3535 | addi $out,$out,0x10 |
| 3536 | vxor $out0,$in0,$twk2 |
| 3537 | bne Lxts_dec6x_steal |
| 3538 | b Lxts_dec6x_done |
| 3539 | |
| 3540 | .align 4 |
| 3541 | Lxts_dec6x_zero: |
| 3542 | cmpwi $taillen,0 |
| 3543 | beq Lxts_dec6x_done |
| 3544 | |
| 3545 | lvx_u $in0,0,$inp |
| 3546 | le?vperm $in0,$in0,$in0,$leperm |
| 3547 | vxor $out0,$in0,$twk1 |
| 3548 | Lxts_dec6x_steal: |
| 3549 | vncipher $out0,$out0,v24 |
| 3550 | lvx v24,$x20,$key_ # round[3] |
| 3551 | addi $key_,$key_,0x20 |
| 3552 | |
| 3553 | vncipher $out0,$out0,v25 |
| 3554 | lvx v25,$x10,$key_ # round[4] |
| 3555 | bdnz Lxts_dec6x_steal |
| 3556 | |
| 3557 | add $inp,$inp,$taillen |
| 3558 | vncipher $out0,$out0,v24 |
| 3559 | |
| 3560 | cmpwi $taillen,0 |
| 3561 | vncipher $out0,$out0,v25 |
| 3562 | |
| 3563 | lvx_u $in0,0,$inp |
| 3564 | vncipher $out0,$out0,v26 |
| 3565 | |
| 3566 | lvsr $inpperm,0,$taillen # $in5 is no more |
| 3567 | vncipher $out0,$out0,v27 |
| 3568 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3569 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3570 | vncipher $out0,$out0,v28 |
| 3571 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3572 | |
| 3573 | vncipher $out0,$out0,v29 |
| 3574 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3575 | vxor $twk1,$twk1,v31 |
| 3576 | |
| 3577 | le?vperm $in0,$in0,$in0,$leperm |
| 3578 | vncipher $out0,$out0,v30 |
| 3579 | |
| 3580 | vperm $in0,$in0,$in0,$inpperm |
| 3581 | vncipherlast $tmp,$out0,$twk1 |
| 3582 | |
| 3583 | le?vperm $out0,$tmp,$tmp,$leperm |
| 3584 | le?stvx_u $out0,0,$out |
| 3585 | be?stvx_u $tmp,0,$out |
| 3586 | |
| 3587 | vxor $out0,$out0,$out0 |
| 3588 | vspltisb $out1,-1 |
| 3589 | vperm $out0,$out0,$out1,$inpperm |
| 3590 | vsel $out0,$in0,$tmp,$out0 |
| 3591 | vxor $out0,$out0,$twk0 |
| 3592 | |
| 3593 | subi r30,$out,1 |
| 3594 | mtctr $taillen |
| 3595 | Loop_xts_dec6x_steal: |
| 3596 | lbzu r0,1(r30) |
| 3597 | stb r0,16(r30) |
| 3598 | bdnz Loop_xts_dec6x_steal |
| 3599 | |
| 3600 | li $taillen,0 |
| 3601 | mtctr $rounds |
| 3602 | b Loop_xts_dec1x # one more time... |
| 3603 | |
| 3604 | .align 4 |
| 3605 | Lxts_dec6x_done: |
| 3606 | ${UCMP}i $ivp,0 |
| 3607 | beq Lxts_dec6x_ret |
| 3608 | |
| 3609 | vxor $tweak,$twk0,$rndkey0 |
| 3610 | le?vperm $tweak,$tweak,$tweak,$leperm |
| 3611 | stvx_u $tweak,0,$ivp |
| 3612 | |
| 3613 | Lxts_dec6x_ret: |
| 3614 | mtlr r11 |
| 3615 | li r10,`$FRAME+15` |
| 3616 | li r11,`$FRAME+31` |
| 3617 | stvx $seven,r10,$sp # wipe copies of round keys |
| 3618 | addi r10,r10,32 |
| 3619 | stvx $seven,r11,$sp |
| 3620 | addi r11,r11,32 |
| 3621 | stvx $seven,r10,$sp |
| 3622 | addi r10,r10,32 |
| 3623 | stvx $seven,r11,$sp |
| 3624 | addi r11,r11,32 |
| 3625 | stvx $seven,r10,$sp |
| 3626 | addi r10,r10,32 |
| 3627 | stvx $seven,r11,$sp |
| 3628 | addi r11,r11,32 |
| 3629 | stvx $seven,r10,$sp |
| 3630 | addi r10,r10,32 |
| 3631 | stvx $seven,r11,$sp |
| 3632 | addi r11,r11,32 |
| 3633 | |
| 3634 | mtspr 256,$vrsave |
| 3635 | lvx v20,r10,$sp # ABI says so |
| 3636 | addi r10,r10,32 |
| 3637 | lvx v21,r11,$sp |
| 3638 | addi r11,r11,32 |
| 3639 | lvx v22,r10,$sp |
| 3640 | addi r10,r10,32 |
| 3641 | lvx v23,r11,$sp |
| 3642 | addi r11,r11,32 |
| 3643 | lvx v24,r10,$sp |
| 3644 | addi r10,r10,32 |
| 3645 | lvx v25,r11,$sp |
| 3646 | addi r11,r11,32 |
| 3647 | lvx v26,r10,$sp |
| 3648 | addi r10,r10,32 |
| 3649 | lvx v27,r11,$sp |
| 3650 | addi r11,r11,32 |
| 3651 | lvx v28,r10,$sp |
| 3652 | addi r10,r10,32 |
| 3653 | lvx v29,r11,$sp |
| 3654 | addi r11,r11,32 |
| 3655 | lvx v30,r10,$sp |
| 3656 | lvx v31,r11,$sp |
| 3657 | $POP r26,`$FRAME+21*16+0*$SIZE_T`($sp) |
| 3658 | $POP r27,`$FRAME+21*16+1*$SIZE_T`($sp) |
| 3659 | $POP r28,`$FRAME+21*16+2*$SIZE_T`($sp) |
| 3660 | $POP r29,`$FRAME+21*16+3*$SIZE_T`($sp) |
| 3661 | $POP r30,`$FRAME+21*16+4*$SIZE_T`($sp) |
| 3662 | $POP r31,`$FRAME+21*16+5*$SIZE_T`($sp) |
| 3663 | addi $sp,$sp,`$FRAME+21*16+6*$SIZE_T` |
| 3664 | blr |
| 3665 | .long 0 |
| 3666 | .byte 0,12,0x04,1,0x80,6,6,0 |
| 3667 | .long 0 |
| 3668 | |
| 3669 | .align 5 |
| 3670 | _aesp8_xts_dec5x: |
| 3671 | vncipher $out0,$out0,v24 |
| 3672 | vncipher $out1,$out1,v24 |
| 3673 | vncipher $out2,$out2,v24 |
| 3674 | vncipher $out3,$out3,v24 |
| 3675 | vncipher $out4,$out4,v24 |
| 3676 | lvx v24,$x20,$key_ # round[3] |
| 3677 | addi $key_,$key_,0x20 |
| 3678 | |
| 3679 | vncipher $out0,$out0,v25 |
| 3680 | vncipher $out1,$out1,v25 |
| 3681 | vncipher $out2,$out2,v25 |
| 3682 | vncipher $out3,$out3,v25 |
| 3683 | vncipher $out4,$out4,v25 |
| 3684 | lvx v25,$x10,$key_ # round[4] |
| 3685 | bdnz _aesp8_xts_dec5x |
| 3686 | |
| 3687 | subi r0,$taillen,1 |
| 3688 | vncipher $out0,$out0,v24 |
| 3689 | vncipher $out1,$out1,v24 |
| 3690 | vncipher $out2,$out2,v24 |
| 3691 | vncipher $out3,$out3,v24 |
| 3692 | vncipher $out4,$out4,v24 |
| 3693 | |
| 3694 | andi. r0,r0,16 |
| 3695 | cmpwi $taillen,0 |
| 3696 | vncipher $out0,$out0,v25 |
| 3697 | vncipher $out1,$out1,v25 |
| 3698 | vncipher $out2,$out2,v25 |
| 3699 | vncipher $out3,$out3,v25 |
| 3700 | vncipher $out4,$out4,v25 |
| 3701 | vxor $twk0,$twk0,v31 |
| 3702 | |
| 3703 | sub $inp,$inp,r0 |
| 3704 | vncipher $out0,$out0,v26 |
| 3705 | vncipher $out1,$out1,v26 |
| 3706 | vncipher $out2,$out2,v26 |
| 3707 | vncipher $out3,$out3,v26 |
| 3708 | vncipher $out4,$out4,v26 |
| 3709 | vxor $in1,$twk1,v31 |
| 3710 | |
| 3711 | vncipher $out0,$out0,v27 |
| 3712 | lvx_u $in0,0,$inp |
| 3713 | vncipher $out1,$out1,v27 |
| 3714 | vncipher $out2,$out2,v27 |
| 3715 | vncipher $out3,$out3,v27 |
| 3716 | vncipher $out4,$out4,v27 |
| 3717 | vxor $in2,$twk2,v31 |
| 3718 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame] | 3719 | addi $key_,$sp,`$FRAME+15` # rewind $key_ |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3720 | vncipher $out0,$out0,v28 |
| 3721 | vncipher $out1,$out1,v28 |
| 3722 | vncipher $out2,$out2,v28 |
| 3723 | vncipher $out3,$out3,v28 |
| 3724 | vncipher $out4,$out4,v28 |
| 3725 | lvx v24,$x00,$key_ # re-pre-load round[1] |
| 3726 | vxor $in3,$twk3,v31 |
| 3727 | |
| 3728 | vncipher $out0,$out0,v29 |
| 3729 | le?vperm $in0,$in0,$in0,$leperm |
| 3730 | vncipher $out1,$out1,v29 |
| 3731 | vncipher $out2,$out2,v29 |
| 3732 | vncipher $out3,$out3,v29 |
| 3733 | vncipher $out4,$out4,v29 |
| 3734 | lvx v25,$x10,$key_ # re-pre-load round[2] |
| 3735 | vxor $in4,$twk4,v31 |
| 3736 | |
| 3737 | vncipher $out0,$out0,v30 |
| 3738 | vncipher $out1,$out1,v30 |
| 3739 | vncipher $out2,$out2,v30 |
| 3740 | vncipher $out3,$out3,v30 |
| 3741 | vncipher $out4,$out4,v30 |
| 3742 | |
| 3743 | vncipherlast $out0,$out0,$twk0 |
| 3744 | vncipherlast $out1,$out1,$in1 |
| 3745 | vncipherlast $out2,$out2,$in2 |
| 3746 | vncipherlast $out3,$out3,$in3 |
| 3747 | vncipherlast $out4,$out4,$in4 |
| 3748 | mtctr $rounds |
| 3749 | blr |
| 3750 | .long 0 |
| 3751 | .byte 0,12,0x14,0,0,0,0,0 |
| 3752 | ___ |
| 3753 | }} }}} |
| 3754 | |
| 3755 | my $consts=1; |
| 3756 | foreach(split("\n",$code)) { |
| 3757 | s/\`([^\`]*)\`/eval($1)/geo; |
| 3758 | |
| 3759 | # constants table endian-specific conversion |
| 3760 | if ($consts && m/\.(long|byte)\s+(.+)\s+(\?[a-z]*)$/o) { |
| 3761 | my $conv=$3; |
| 3762 | my @bytes=(); |
| 3763 | |
| 3764 | # convert to endian-agnostic format |
| 3765 | if ($1 eq "long") { |
| 3766 | foreach (split(/,\s*/,$2)) { |
| 3767 | my $l = /^0/?oct:int; |
| 3768 | push @bytes,($l>>24)&0xff,($l>>16)&0xff,($l>>8)&0xff,$l&0xff; |
| 3769 | } |
| 3770 | } else { |
| 3771 | @bytes = map(/^0/?oct:int,split(/,\s*/,$2)); |
| 3772 | } |
| 3773 | |
| 3774 | # little-endian conversion |
| 3775 | if ($flavour =~ /le$/o) { |
| 3776 | SWITCH: for($conv) { |
| 3777 | /\?inv/ && do { @bytes=map($_^0xf,@bytes); last; }; |
Steven Valdez | 909b19f | 2016-11-21 15:35:44 -0500 | [diff] [blame] | 3778 | /\?rev/ && do { @bytes=reverse(@bytes); last; }; |
Steven Valdez | bb1ceac | 2016-10-07 10:34:51 -0400 | [diff] [blame] | 3779 | } |
| 3780 | } |
| 3781 | |
| 3782 | #emit |
| 3783 | print ".byte\t",join(',',map (sprintf("0x%02x",$_),@bytes)),"\n"; |
| 3784 | next; |
| 3785 | } |
| 3786 | $consts=0 if (m/Lconsts:/o); # end of table |
| 3787 | |
| 3788 | # instructions prefixed with '?' are endian-specific and need |
| 3789 | # to be adjusted accordingly... |
| 3790 | if ($flavour =~ /le$/o) { # little-endian |
| 3791 | s/le\?//o or |
| 3792 | s/be\?/#be#/o or |
| 3793 | s/\?lvsr/lvsl/o or |
| 3794 | s/\?lvsl/lvsr/o or |
| 3795 | s/\?(vperm\s+v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+)/$1$3$2$4/o or |
| 3796 | s/\?(vsldoi\s+v[0-9]+,\s*)(v[0-9]+,)\s*(v[0-9]+,\s*)([0-9]+)/$1$3$2 16-$4/o or |
| 3797 | s/\?(vspltw\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9])/$1$2 3-$3/o; |
| 3798 | } else { # big-endian |
| 3799 | s/le\?/#le#/o or |
| 3800 | s/be\?//o or |
| 3801 | s/\?([a-z]+)/$1/o; |
| 3802 | } |
| 3803 | |
| 3804 | print $_,"\n"; |
| 3805 | } |
| 3806 | |
Pete Bentley | 0c61efe | 2019-08-13 09:32:23 +0100 | [diff] [blame^] | 3807 | close STDOUT or die "error closing STDOUT"; |