1 #! /usr/bin/env perl 2 # Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved. 3 # 4 # Licensed under the OpenSSL license (the "License"). You may not use 5 # this file except in compliance with the License. You can obtain a copy 6 # in the file LICENSE in the source distribution or at 7 # https://www.openssl.org/source/license.html 8 9 # 10 # ==================================================================== 11 # Written by Andy Polyakov <appro (at] 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 # 18 # AES-NI-CTR+GHASH stitch. 19 # 20 # February 2013 21 # 22 # OpenSSL GCM implementation is organized in such way that its 23 # performance is rather close to the sum of its streamed components, 24 # in the context parallelized AES-NI CTR and modulo-scheduled 25 # PCLMULQDQ-enabled GHASH. Unfortunately, as no stitch implementation 26 # was observed to perform significantly better than the sum of the 27 # components on contemporary CPUs, the effort was deemed impossible to 28 # justify. This module is based on combination of Intel submissions, 29 # [1] and [2], with MOVBE twist suggested by Ilya Albrekht and Max 30 # Locktyukhin of Intel Corp. who verified that it reduces shuffles 31 # pressure with notable relative improvement, achieving 1.0 cycle per 32 # byte processed with 128-bit key on Haswell processor, 0.74 - on 33 # Broadwell, 0.63 - on Skylake... [Mentioned results are raw profiled 34 # measurements for favourable packet size, one divisible by 96. 35 # Applications using the EVP interface will observe a few percent 36 # worse performance.] 37 # 38 # Knights Landing processes 1 byte in 1.25 cycles (measured with EVP). 39 # 40 # [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest 41 # [2] http://www.intel.com/content/dam/www/public/us/en/documents/software-support/enabling-high-performance-gcm.pdf 42 43 $flavour = shift; 44 $output = shift; 45 if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } 46 47 $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); 48 49 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; 50 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or 51 ( $xlate="${dir}../../../perlasm/x86_64-xlate.pl" and -f $xlate) or 52 die "can't locate x86_64-xlate.pl"; 53 54 # |$avx| in ghash-x86_64.pl must be set to at least 1; otherwise tags will 55 # be computed incorrectly. 56 # 57 # In upstream, this is controlled by shelling out to the compiler to check 58 # versions, but BoringSSL is intended to be used with pre-generated perlasm 59 # output, so this isn't useful anyway. 60 # 61 # The upstream code uses the condition |$avx>1| even though no AVX2 62 # instructions are used, because it assumes MOVBE is supported by the assembler 63 # if and only if AVX2 is also supported by the assembler; see 64 # https://marc.info/?l=openssl-dev&m=146567589526984&w=2. 65 $avx = 2; 66 67 open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""; 68 *STDOUT=*OUT; 69 70 # See the comment above regarding why the condition is ($avx>1) when there are 71 # no AVX2 instructions being used. 72 if ($avx>1) {{{ 73 74 ($inp,$out,$len,$key,$ivp,$Xip)=("%rdi","%rsi","%rdx","%rcx","%r8","%r9"); 75 76 ($Ii,$T1,$T2,$Hkey, 77 $Z0,$Z1,$Z2,$Z3,$Xi) = map("%xmm$_",(0..8)); 78 79 ($inout0,$inout1,$inout2,$inout3,$inout4,$inout5,$rndkey) = map("%xmm$_",(9..15)); 80 81 ($counter,$rounds,$ret,$const,$in0,$end0)=("%ebx","%ebp","%r10","%r11","%r14","%r15"); 82 83 $code=<<___; 84 .text 85 86 .type _aesni_ctr32_ghash_6x,\@abi-omnipotent 87 .align 32 88 _aesni_ctr32_ghash_6x: 89 .cfi_startproc 90 vmovdqu 0x20($const),$T2 # borrow $T2, .Lone_msb 91 sub \$6,$len 92 vpxor $Z0,$Z0,$Z0 # $Z0 = 0 93 vmovdqu 0x00-0x80($key),$rndkey 94 vpaddb $T2,$T1,$inout1 95 vpaddb $T2,$inout1,$inout2 96 vpaddb $T2,$inout2,$inout3 97 vpaddb $T2,$inout3,$inout4 98 vpaddb $T2,$inout4,$inout5 99 vpxor $rndkey,$T1,$inout0 100 vmovdqu $Z0,16+8(%rsp) # "$Z3" = 0 101 jmp .Loop6x 102 103 .align 32 104 .Loop6x: 105 add \$`6<<24`,$counter 106 jc .Lhandle_ctr32 # discard $inout[1-5]? 107 vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 108 vpaddb $T2,$inout5,$T1 # next counter value 109 vpxor $rndkey,$inout1,$inout1 110 vpxor $rndkey,$inout2,$inout2 111 112 .Lresume_ctr32: 113 vmovdqu $T1,($ivp) # save next counter value 114 vpclmulqdq \$0x10,$Hkey,$Z3,$Z1 115 vpxor $rndkey,$inout3,$inout3 116 vmovups 0x10-0x80($key),$T2 # borrow $T2 for $rndkey 117 vpclmulqdq \$0x01,$Hkey,$Z3,$Z2 118 119 # At this point, the current block of 96 (0x60) bytes has already been 120 # loaded into registers. Concurrently with processing it, we want to 121 # load the next 96 bytes of input for the next round. Obviously, we can 122 # only do this if there are at least 96 more bytes of input beyond the 123 # input we're currently processing, or else we'd read past the end of 124 # the input buffer. Here, we set |%r12| to 96 if there are at least 96 125 # bytes of input beyond the 96 bytes we're already processing, and we 126 # set |%r12| to 0 otherwise. In the case where we set |%r12| to 96, 127 # we'll read in the next block so that it is in registers for the next 128 # loop iteration. In the case where we set |%r12| to 0, we'll re-read 129 # the current block and then ignore what we re-read. 130 # 131 # At this point, |$in0| points to the current (already read into 132 # registers) block, and |$end0| points to 2*96 bytes before the end of 133 # the input. Thus, |$in0| > |$end0| means that we do not have the next 134 # 96-byte block to read in, and |$in0| <= |$end0| means we do. 135 xor %r12,%r12 136 cmp $in0,$end0 137 138 vaesenc $T2,$inout0,$inout0 139 vmovdqu 0x30+8(%rsp),$Ii # I[4] 140 vpxor $rndkey,$inout4,$inout4 141 vpclmulqdq \$0x00,$Hkey,$Z3,$T1 142 vaesenc $T2,$inout1,$inout1 143 vpxor $rndkey,$inout5,$inout5 144 setnc %r12b 145 vpclmulqdq \$0x11,$Hkey,$Z3,$Z3 146 vaesenc $T2,$inout2,$inout2 147 vmovdqu 0x10-0x20($Xip),$Hkey # $Hkey^2 148 neg %r12 149 vaesenc $T2,$inout3,$inout3 150 vpxor $Z1,$Z2,$Z2 151 vpclmulqdq \$0x00,$Hkey,$Ii,$Z1 152 vpxor $Z0,$Xi,$Xi # modulo-scheduled 153 vaesenc $T2,$inout4,$inout4 154 vpxor $Z1,$T1,$Z0 155 and \$0x60,%r12 156 vmovups 0x20-0x80($key),$rndkey 157 vpclmulqdq \$0x10,$Hkey,$Ii,$T1 158 vaesenc $T2,$inout5,$inout5 159 160 vpclmulqdq \$0x01,$Hkey,$Ii,$T2 161 lea ($in0,%r12),$in0 162 vaesenc $rndkey,$inout0,$inout0 163 vpxor 16+8(%rsp),$Xi,$Xi # modulo-scheduled [vpxor $Z3,$Xi,$Xi] 164 vpclmulqdq \$0x11,$Hkey,$Ii,$Hkey 165 vmovdqu 0x40+8(%rsp),$Ii # I[3] 166 vaesenc $rndkey,$inout1,$inout1 167 movbe 0x58($in0),%r13 168 vaesenc $rndkey,$inout2,$inout2 169 movbe 0x50($in0),%r12 170 vaesenc $rndkey,$inout3,$inout3 171 mov %r13,0x20+8(%rsp) 172 vaesenc $rndkey,$inout4,$inout4 173 mov %r12,0x28+8(%rsp) 174 vmovdqu 0x30-0x20($Xip),$Z1 # borrow $Z1 for $Hkey^3 175 vaesenc $rndkey,$inout5,$inout5 176 177 vmovups 0x30-0x80($key),$rndkey 178 vpxor $T1,$Z2,$Z2 179 vpclmulqdq \$0x00,$Z1,$Ii,$T1 180 vaesenc $rndkey,$inout0,$inout0 181 vpxor $T2,$Z2,$Z2 182 vpclmulqdq \$0x10,$Z1,$Ii,$T2 183 vaesenc $rndkey,$inout1,$inout1 184 vpxor $Hkey,$Z3,$Z3 185 vpclmulqdq \$0x01,$Z1,$Ii,$Hkey 186 vaesenc $rndkey,$inout2,$inout2 187 vpclmulqdq \$0x11,$Z1,$Ii,$Z1 188 vmovdqu 0x50+8(%rsp),$Ii # I[2] 189 vaesenc $rndkey,$inout3,$inout3 190 vaesenc $rndkey,$inout4,$inout4 191 vpxor $T1,$Z0,$Z0 192 vmovdqu 0x40-0x20($Xip),$T1 # borrow $T1 for $Hkey^4 193 vaesenc $rndkey,$inout5,$inout5 194 195 vmovups 0x40-0x80($key),$rndkey 196 vpxor $T2,$Z2,$Z2 197 vpclmulqdq \$0x00,$T1,$Ii,$T2 198 vaesenc $rndkey,$inout0,$inout0 199 vpxor $Hkey,$Z2,$Z2 200 vpclmulqdq \$0x10,$T1,$Ii,$Hkey 201 vaesenc $rndkey,$inout1,$inout1 202 movbe 0x48($in0),%r13 203 vpxor $Z1,$Z3,$Z3 204 vpclmulqdq \$0x01,$T1,$Ii,$Z1 205 vaesenc $rndkey,$inout2,$inout2 206 movbe 0x40($in0),%r12 207 vpclmulqdq \$0x11,$T1,$Ii,$T1 208 vmovdqu 0x60+8(%rsp),$Ii # I[1] 209 vaesenc $rndkey,$inout3,$inout3 210 mov %r13,0x30+8(%rsp) 211 vaesenc $rndkey,$inout4,$inout4 212 mov %r12,0x38+8(%rsp) 213 vpxor $T2,$Z0,$Z0 214 vmovdqu 0x60-0x20($Xip),$T2 # borrow $T2 for $Hkey^5 215 vaesenc $rndkey,$inout5,$inout5 216 217 vmovups 0x50-0x80($key),$rndkey 218 vpxor $Hkey,$Z2,$Z2 219 vpclmulqdq \$0x00,$T2,$Ii,$Hkey 220 vaesenc $rndkey,$inout0,$inout0 221 vpxor $Z1,$Z2,$Z2 222 vpclmulqdq \$0x10,$T2,$Ii,$Z1 223 vaesenc $rndkey,$inout1,$inout1 224 movbe 0x38($in0),%r13 225 vpxor $T1,$Z3,$Z3 226 vpclmulqdq \$0x01,$T2,$Ii,$T1 227 vpxor 0x70+8(%rsp),$Xi,$Xi # accumulate I[0] 228 vaesenc $rndkey,$inout2,$inout2 229 movbe 0x30($in0),%r12 230 vpclmulqdq \$0x11,$T2,$Ii,$T2 231 vaesenc $rndkey,$inout3,$inout3 232 mov %r13,0x40+8(%rsp) 233 vaesenc $rndkey,$inout4,$inout4 234 mov %r12,0x48+8(%rsp) 235 vpxor $Hkey,$Z0,$Z0 236 vmovdqu 0x70-0x20($Xip),$Hkey # $Hkey^6 237 vaesenc $rndkey,$inout5,$inout5 238 239 vmovups 0x60-0x80($key),$rndkey 240 vpxor $Z1,$Z2,$Z2 241 vpclmulqdq \$0x10,$Hkey,$Xi,$Z1 242 vaesenc $rndkey,$inout0,$inout0 243 vpxor $T1,$Z2,$Z2 244 vpclmulqdq \$0x01,$Hkey,$Xi,$T1 245 vaesenc $rndkey,$inout1,$inout1 246 movbe 0x28($in0),%r13 247 vpxor $T2,$Z3,$Z3 248 vpclmulqdq \$0x00,$Hkey,$Xi,$T2 249 vaesenc $rndkey,$inout2,$inout2 250 movbe 0x20($in0),%r12 251 vpclmulqdq \$0x11,$Hkey,$Xi,$Xi 252 vaesenc $rndkey,$inout3,$inout3 253 mov %r13,0x50+8(%rsp) 254 vaesenc $rndkey,$inout4,$inout4 255 mov %r12,0x58+8(%rsp) 256 vpxor $Z1,$Z2,$Z2 257 vaesenc $rndkey,$inout5,$inout5 258 vpxor $T1,$Z2,$Z2 259 260 vmovups 0x70-0x80($key),$rndkey 261 vpslldq \$8,$Z2,$Z1 262 vpxor $T2,$Z0,$Z0 263 vmovdqu 0x10($const),$Hkey # .Lpoly 264 265 vaesenc $rndkey,$inout0,$inout0 266 vpxor $Xi,$Z3,$Z3 267 vaesenc $rndkey,$inout1,$inout1 268 vpxor $Z1,$Z0,$Z0 269 movbe 0x18($in0),%r13 270 vaesenc $rndkey,$inout2,$inout2 271 movbe 0x10($in0),%r12 272 vpalignr \$8,$Z0,$Z0,$Ii # 1st phase 273 vpclmulqdq \$0x10,$Hkey,$Z0,$Z0 274 mov %r13,0x60+8(%rsp) 275 vaesenc $rndkey,$inout3,$inout3 276 mov %r12,0x68+8(%rsp) 277 vaesenc $rndkey,$inout4,$inout4 278 vmovups 0x80-0x80($key),$T1 # borrow $T1 for $rndkey 279 vaesenc $rndkey,$inout5,$inout5 280 281 vaesenc $T1,$inout0,$inout0 282 vmovups 0x90-0x80($key),$rndkey 283 vaesenc $T1,$inout1,$inout1 284 vpsrldq \$8,$Z2,$Z2 285 vaesenc $T1,$inout2,$inout2 286 vpxor $Z2,$Z3,$Z3 287 vaesenc $T1,$inout3,$inout3 288 vpxor $Ii,$Z0,$Z0 289 movbe 0x08($in0),%r13 290 vaesenc $T1,$inout4,$inout4 291 movbe 0x00($in0),%r12 292 vaesenc $T1,$inout5,$inout5 293 vmovups 0xa0-0x80($key),$T1 294 cmp \$11,$rounds 295 jb .Lenc_tail # 128-bit key 296 297 vaesenc $rndkey,$inout0,$inout0 298 vaesenc $rndkey,$inout1,$inout1 299 vaesenc $rndkey,$inout2,$inout2 300 vaesenc $rndkey,$inout3,$inout3 301 vaesenc $rndkey,$inout4,$inout4 302 vaesenc $rndkey,$inout5,$inout5 303 304 vaesenc $T1,$inout0,$inout0 305 vaesenc $T1,$inout1,$inout1 306 vaesenc $T1,$inout2,$inout2 307 vaesenc $T1,$inout3,$inout3 308 vaesenc $T1,$inout4,$inout4 309 vmovups 0xb0-0x80($key),$rndkey 310 vaesenc $T1,$inout5,$inout5 311 vmovups 0xc0-0x80($key),$T1 312 je .Lenc_tail # 192-bit key 313 314 vaesenc $rndkey,$inout0,$inout0 315 vaesenc $rndkey,$inout1,$inout1 316 vaesenc $rndkey,$inout2,$inout2 317 vaesenc $rndkey,$inout3,$inout3 318 vaesenc $rndkey,$inout4,$inout4 319 vaesenc $rndkey,$inout5,$inout5 320 321 vaesenc $T1,$inout0,$inout0 322 vaesenc $T1,$inout1,$inout1 323 vaesenc $T1,$inout2,$inout2 324 vaesenc $T1,$inout3,$inout3 325 vaesenc $T1,$inout4,$inout4 326 vmovups 0xd0-0x80($key),$rndkey 327 vaesenc $T1,$inout5,$inout5 328 vmovups 0xe0-0x80($key),$T1 329 jmp .Lenc_tail # 256-bit key 330 331 .align 32 332 .Lhandle_ctr32: 333 vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask 334 vpshufb $Ii,$T1,$Z2 # byte-swap counter 335 vmovdqu 0x30($const),$Z1 # borrow $Z1, .Ltwo_lsb 336 vpaddd 0x40($const),$Z2,$inout1 # .Lone_lsb 337 vpaddd $Z1,$Z2,$inout2 338 vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 339 vpaddd $Z1,$inout1,$inout3 340 vpshufb $Ii,$inout1,$inout1 341 vpaddd $Z1,$inout2,$inout4 342 vpshufb $Ii,$inout2,$inout2 343 vpxor $rndkey,$inout1,$inout1 344 vpaddd $Z1,$inout3,$inout5 345 vpshufb $Ii,$inout3,$inout3 346 vpxor $rndkey,$inout2,$inout2 347 vpaddd $Z1,$inout4,$T1 # byte-swapped next counter value 348 vpshufb $Ii,$inout4,$inout4 349 vpshufb $Ii,$inout5,$inout5 350 vpshufb $Ii,$T1,$T1 # next counter value 351 jmp .Lresume_ctr32 352 353 .align 32 354 .Lenc_tail: 355 vaesenc $rndkey,$inout0,$inout0 356 vmovdqu $Z3,16+8(%rsp) # postpone vpxor $Z3,$Xi,$Xi 357 vpalignr \$8,$Z0,$Z0,$Xi # 2nd phase 358 vaesenc $rndkey,$inout1,$inout1 359 vpclmulqdq \$0x10,$Hkey,$Z0,$Z0 360 vpxor 0x00($inp),$T1,$T2 361 vaesenc $rndkey,$inout2,$inout2 362 vpxor 0x10($inp),$T1,$Ii 363 vaesenc $rndkey,$inout3,$inout3 364 vpxor 0x20($inp),$T1,$Z1 365 vaesenc $rndkey,$inout4,$inout4 366 vpxor 0x30($inp),$T1,$Z2 367 vaesenc $rndkey,$inout5,$inout5 368 vpxor 0x40($inp),$T1,$Z3 369 vpxor 0x50($inp),$T1,$Hkey 370 vmovdqu ($ivp),$T1 # load next counter value 371 372 vaesenclast $T2,$inout0,$inout0 373 vmovdqu 0x20($const),$T2 # borrow $T2, .Lone_msb 374 vaesenclast $Ii,$inout1,$inout1 375 vpaddb $T2,$T1,$Ii 376 mov %r13,0x70+8(%rsp) 377 lea 0x60($inp),$inp 378 vaesenclast $Z1,$inout2,$inout2 379 vpaddb $T2,$Ii,$Z1 380 mov %r12,0x78+8(%rsp) 381 lea 0x60($out),$out 382 vmovdqu 0x00-0x80($key),$rndkey 383 vaesenclast $Z2,$inout3,$inout3 384 vpaddb $T2,$Z1,$Z2 385 vaesenclast $Z3, $inout4,$inout4 386 vpaddb $T2,$Z2,$Z3 387 vaesenclast $Hkey,$inout5,$inout5 388 vpaddb $T2,$Z3,$Hkey 389 390 add \$0x60,$ret 391 sub \$0x6,$len 392 jc .L6x_done 393 394 vmovups $inout0,-0x60($out) # save output 395 vpxor $rndkey,$T1,$inout0 396 vmovups $inout1,-0x50($out) 397 vmovdqa $Ii,$inout1 # 0 latency 398 vmovups $inout2,-0x40($out) 399 vmovdqa $Z1,$inout2 # 0 latency 400 vmovups $inout3,-0x30($out) 401 vmovdqa $Z2,$inout3 # 0 latency 402 vmovups $inout4,-0x20($out) 403 vmovdqa $Z3,$inout4 # 0 latency 404 vmovups $inout5,-0x10($out) 405 vmovdqa $Hkey,$inout5 # 0 latency 406 vmovdqu 0x20+8(%rsp),$Z3 # I[5] 407 jmp .Loop6x 408 409 .L6x_done: 410 vpxor 16+8(%rsp),$Xi,$Xi # modulo-scheduled 411 vpxor $Z0,$Xi,$Xi # modulo-scheduled 412 413 ret 414 .cfi_endproc 415 .size _aesni_ctr32_ghash_6x,.-_aesni_ctr32_ghash_6x 416 ___ 417 ###################################################################### 418 # 419 # size_t aesni_gcm_[en|de]crypt(const void *inp, void *out, size_t len, 420 # const AES_KEY *key, unsigned char iv[16], 421 # struct { u128 Xi,H,Htbl[9]; } *Xip); 422 $code.=<<___; 423 .globl aesni_gcm_decrypt 424 .type aesni_gcm_decrypt,\@function,6 425 .align 32 426 aesni_gcm_decrypt: 427 .cfi_startproc 428 xor $ret,$ret 429 430 # We call |_aesni_ctr32_ghash_6x|, which requires at least 96 (0x60) 431 # bytes of input. 432 cmp \$0x60,$len # minimal accepted length 433 jb .Lgcm_dec_abort 434 435 lea (%rsp),%rax # save stack pointer 436 .cfi_def_cfa_register %rax 437 push %rbx 438 .cfi_push %rbx 439 push %rbp 440 .cfi_push %rbp 441 push %r12 442 .cfi_push %r12 443 push %r13 444 .cfi_push %r13 445 push %r14 446 .cfi_push %r14 447 push %r15 448 .cfi_push %r15 449 ___ 450 $code.=<<___ if ($win64); 451 lea -0xa8(%rsp),%rsp 452 movaps %xmm6,-0xd8(%rax) 453 movaps %xmm7,-0xc8(%rax) 454 movaps %xmm8,-0xb8(%rax) 455 movaps %xmm9,-0xa8(%rax) 456 movaps %xmm10,-0x98(%rax) 457 movaps %xmm11,-0x88(%rax) 458 movaps %xmm12,-0x78(%rax) 459 movaps %xmm13,-0x68(%rax) 460 movaps %xmm14,-0x58(%rax) 461 movaps %xmm15,-0x48(%rax) 462 .Lgcm_dec_body: 463 ___ 464 $code.=<<___; 465 vzeroupper 466 467 vmovdqu ($ivp),$T1 # input counter value 468 add \$-128,%rsp 469 mov 12($ivp),$counter 470 lea .Lbswap_mask(%rip),$const 471 lea -0x80($key),$in0 # borrow $in0 472 mov \$0xf80,$end0 # borrow $end0 473 vmovdqu ($Xip),$Xi # load Xi 474 and \$-128,%rsp # ensure stack alignment 475 vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask 476 lea 0x80($key),$key # size optimization 477 lea 0x20+0x20($Xip),$Xip # size optimization 478 mov 0xf0-0x80($key),$rounds 479 vpshufb $Ii,$Xi,$Xi 480 481 and $end0,$in0 482 and %rsp,$end0 483 sub $in0,$end0 484 jc .Ldec_no_key_aliasing 485 cmp \$768,$end0 486 jnc .Ldec_no_key_aliasing 487 sub $end0,%rsp # avoid aliasing with key 488 .Ldec_no_key_aliasing: 489 490 vmovdqu 0x50($inp),$Z3 # I[5] 491 lea ($inp),$in0 492 vmovdqu 0x40($inp),$Z0 493 494 # |_aesni_ctr32_ghash_6x| requires |$end0| to point to 2*96 (0xc0) 495 # bytes before the end of the input. Note, in particular, that this is 496 # correct even if |$len| is not an even multiple of 96 or 16. XXX: This 497 # seems to require that |$inp| + |$len| >= 2*96 (0xc0); i.e. |$inp| must 498 # not be near the very beginning of the address space when |$len| < 2*96 499 # (0xc0). 500 lea -0xc0($inp,$len),$end0 501 502 vmovdqu 0x30($inp),$Z1 503 shr \$4,$len 504 xor $ret,$ret 505 vmovdqu 0x20($inp),$Z2 506 vpshufb $Ii,$Z3,$Z3 # passed to _aesni_ctr32_ghash_6x 507 vmovdqu 0x10($inp),$T2 508 vpshufb $Ii,$Z0,$Z0 509 vmovdqu ($inp),$Hkey 510 vpshufb $Ii,$Z1,$Z1 511 vmovdqu $Z0,0x30(%rsp) 512 vpshufb $Ii,$Z2,$Z2 513 vmovdqu $Z1,0x40(%rsp) 514 vpshufb $Ii,$T2,$T2 515 vmovdqu $Z2,0x50(%rsp) 516 vpshufb $Ii,$Hkey,$Hkey 517 vmovdqu $T2,0x60(%rsp) 518 vmovdqu $Hkey,0x70(%rsp) 519 520 call _aesni_ctr32_ghash_6x 521 522 vmovups $inout0,-0x60($out) # save output 523 vmovups $inout1,-0x50($out) 524 vmovups $inout2,-0x40($out) 525 vmovups $inout3,-0x30($out) 526 vmovups $inout4,-0x20($out) 527 vmovups $inout5,-0x10($out) 528 529 vpshufb ($const),$Xi,$Xi # .Lbswap_mask 530 vmovdqu $Xi,-0x40($Xip) # output Xi 531 532 vzeroupper 533 ___ 534 $code.=<<___ if ($win64); 535 movaps -0xd8(%rax),%xmm6 536 movaps -0xc8(%rax),%xmm7 537 movaps -0xb8(%rax),%xmm8 538 movaps -0xa8(%rax),%xmm9 539 movaps -0x98(%rax),%xmm10 540 movaps -0x88(%rax),%xmm11 541 movaps -0x78(%rax),%xmm12 542 movaps -0x68(%rax),%xmm13 543 movaps -0x58(%rax),%xmm14 544 movaps -0x48(%rax),%xmm15 545 ___ 546 $code.=<<___; 547 mov -48(%rax),%r15 548 .cfi_restore %r15 549 mov -40(%rax),%r14 550 .cfi_restore %r14 551 mov -32(%rax),%r13 552 .cfi_restore %r13 553 mov -24(%rax),%r12 554 .cfi_restore %r12 555 mov -16(%rax),%rbp 556 .cfi_restore %rbp 557 mov -8(%rax),%rbx 558 .cfi_restore %rbx 559 lea (%rax),%rsp # restore %rsp 560 .cfi_def_cfa_register %rsp 561 .Lgcm_dec_abort: 562 mov $ret,%rax # return value 563 ret 564 .cfi_endproc 565 .size aesni_gcm_decrypt,.-aesni_gcm_decrypt 566 ___ 567 568 $code.=<<___; 569 .type _aesni_ctr32_6x,\@abi-omnipotent 570 .align 32 571 _aesni_ctr32_6x: 572 .cfi_startproc 573 vmovdqu 0x00-0x80($key),$Z0 # borrow $Z0 for $rndkey 574 vmovdqu 0x20($const),$T2 # borrow $T2, .Lone_msb 575 lea -1($rounds),%r13 576 vmovups 0x10-0x80($key),$rndkey 577 lea 0x20-0x80($key),%r12 578 vpxor $Z0,$T1,$inout0 579 add \$`6<<24`,$counter 580 jc .Lhandle_ctr32_2 581 vpaddb $T2,$T1,$inout1 582 vpaddb $T2,$inout1,$inout2 583 vpxor $Z0,$inout1,$inout1 584 vpaddb $T2,$inout2,$inout3 585 vpxor $Z0,$inout2,$inout2 586 vpaddb $T2,$inout3,$inout4 587 vpxor $Z0,$inout3,$inout3 588 vpaddb $T2,$inout4,$inout5 589 vpxor $Z0,$inout4,$inout4 590 vpaddb $T2,$inout5,$T1 591 vpxor $Z0,$inout5,$inout5 592 jmp .Loop_ctr32 593 594 .align 16 595 .Loop_ctr32: 596 vaesenc $rndkey,$inout0,$inout0 597 vaesenc $rndkey,$inout1,$inout1 598 vaesenc $rndkey,$inout2,$inout2 599 vaesenc $rndkey,$inout3,$inout3 600 vaesenc $rndkey,$inout4,$inout4 601 vaesenc $rndkey,$inout5,$inout5 602 vmovups (%r12),$rndkey 603 lea 0x10(%r12),%r12 604 dec %r13d 605 jnz .Loop_ctr32 606 607 vmovdqu (%r12),$Hkey # last round key 608 vaesenc $rndkey,$inout0,$inout0 609 vpxor 0x00($inp),$Hkey,$Z0 610 vaesenc $rndkey,$inout1,$inout1 611 vpxor 0x10($inp),$Hkey,$Z1 612 vaesenc $rndkey,$inout2,$inout2 613 vpxor 0x20($inp),$Hkey,$Z2 614 vaesenc $rndkey,$inout3,$inout3 615 vpxor 0x30($inp),$Hkey,$Xi 616 vaesenc $rndkey,$inout4,$inout4 617 vpxor 0x40($inp),$Hkey,$T2 618 vaesenc $rndkey,$inout5,$inout5 619 vpxor 0x50($inp),$Hkey,$Hkey 620 lea 0x60($inp),$inp 621 622 vaesenclast $Z0,$inout0,$inout0 623 vaesenclast $Z1,$inout1,$inout1 624 vaesenclast $Z2,$inout2,$inout2 625 vaesenclast $Xi,$inout3,$inout3 626 vaesenclast $T2,$inout4,$inout4 627 vaesenclast $Hkey,$inout5,$inout5 628 vmovups $inout0,0x00($out) 629 vmovups $inout1,0x10($out) 630 vmovups $inout2,0x20($out) 631 vmovups $inout3,0x30($out) 632 vmovups $inout4,0x40($out) 633 vmovups $inout5,0x50($out) 634 lea 0x60($out),$out 635 636 ret 637 .align 32 638 .Lhandle_ctr32_2: 639 vpshufb $Ii,$T1,$Z2 # byte-swap counter 640 vmovdqu 0x30($const),$Z1 # borrow $Z1, .Ltwo_lsb 641 vpaddd 0x40($const),$Z2,$inout1 # .Lone_lsb 642 vpaddd $Z1,$Z2,$inout2 643 vpaddd $Z1,$inout1,$inout3 644 vpshufb $Ii,$inout1,$inout1 645 vpaddd $Z1,$inout2,$inout4 646 vpshufb $Ii,$inout2,$inout2 647 vpxor $Z0,$inout1,$inout1 648 vpaddd $Z1,$inout3,$inout5 649 vpshufb $Ii,$inout3,$inout3 650 vpxor $Z0,$inout2,$inout2 651 vpaddd $Z1,$inout4,$T1 # byte-swapped next counter value 652 vpshufb $Ii,$inout4,$inout4 653 vpxor $Z0,$inout3,$inout3 654 vpshufb $Ii,$inout5,$inout5 655 vpxor $Z0,$inout4,$inout4 656 vpshufb $Ii,$T1,$T1 # next counter value 657 vpxor $Z0,$inout5,$inout5 658 jmp .Loop_ctr32 659 .cfi_endproc 660 .size _aesni_ctr32_6x,.-_aesni_ctr32_6x 661 662 .globl aesni_gcm_encrypt 663 .type aesni_gcm_encrypt,\@function,6 664 .align 32 665 aesni_gcm_encrypt: 666 .cfi_startproc 667 #ifndef NDEBUG 668 #ifndef BORINGSSL_FIPS 669 .extern BORINGSSL_function_hit 670 movb \$1,BORINGSSL_function_hit+2(%rip) 671 #endif 672 #endif 673 xor $ret,$ret 674 675 # We call |_aesni_ctr32_6x| twice, each call consuming 96 bytes of 676 # input. Then we call |_aesni_ctr32_ghash_6x|, which requires at 677 # least 96 more bytes of input. 678 cmp \$0x60*3,$len # minimal accepted length 679 jb .Lgcm_enc_abort 680 681 lea (%rsp),%rax # save stack pointer 682 .cfi_def_cfa_register %rax 683 push %rbx 684 .cfi_push %rbx 685 push %rbp 686 .cfi_push %rbp 687 push %r12 688 .cfi_push %r12 689 push %r13 690 .cfi_push %r13 691 push %r14 692 .cfi_push %r14 693 push %r15 694 .cfi_push %r15 695 ___ 696 $code.=<<___ if ($win64); 697 lea -0xa8(%rsp),%rsp 698 movaps %xmm6,-0xd8(%rax) 699 movaps %xmm7,-0xc8(%rax) 700 movaps %xmm8,-0xb8(%rax) 701 movaps %xmm9,-0xa8(%rax) 702 movaps %xmm10,-0x98(%rax) 703 movaps %xmm11,-0x88(%rax) 704 movaps %xmm12,-0x78(%rax) 705 movaps %xmm13,-0x68(%rax) 706 movaps %xmm14,-0x58(%rax) 707 movaps %xmm15,-0x48(%rax) 708 .Lgcm_enc_body: 709 ___ 710 $code.=<<___; 711 vzeroupper 712 713 vmovdqu ($ivp),$T1 # input counter value 714 add \$-128,%rsp 715 mov 12($ivp),$counter 716 lea .Lbswap_mask(%rip),$const 717 lea -0x80($key),$in0 # borrow $in0 718 mov \$0xf80,$end0 # borrow $end0 719 lea 0x80($key),$key # size optimization 720 vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask 721 and \$-128,%rsp # ensure stack alignment 722 mov 0xf0-0x80($key),$rounds 723 724 and $end0,$in0 725 and %rsp,$end0 726 sub $in0,$end0 727 jc .Lenc_no_key_aliasing 728 cmp \$768,$end0 729 jnc .Lenc_no_key_aliasing 730 sub $end0,%rsp # avoid aliasing with key 731 .Lenc_no_key_aliasing: 732 733 lea ($out),$in0 734 735 # |_aesni_ctr32_ghash_6x| requires |$end0| to point to 2*96 (0xc0) 736 # bytes before the end of the input. Note, in particular, that this is 737 # correct even if |$len| is not an even multiple of 96 or 16. Unlike in 738 # the decryption case, there's no caveat that |$out| must not be near 739 # the very beginning of the address space, because we know that 740 # |$len| >= 3*96 from the check above, and so we know 741 # |$out| + |$len| >= 2*96 (0xc0). 742 lea -0xc0($out,$len),$end0 743 744 shr \$4,$len 745 746 call _aesni_ctr32_6x 747 vpshufb $Ii,$inout0,$Xi # save bswapped output on stack 748 vpshufb $Ii,$inout1,$T2 749 vmovdqu $Xi,0x70(%rsp) 750 vpshufb $Ii,$inout2,$Z0 751 vmovdqu $T2,0x60(%rsp) 752 vpshufb $Ii,$inout3,$Z1 753 vmovdqu $Z0,0x50(%rsp) 754 vpshufb $Ii,$inout4,$Z2 755 vmovdqu $Z1,0x40(%rsp) 756 vpshufb $Ii,$inout5,$Z3 # passed to _aesni_ctr32_ghash_6x 757 vmovdqu $Z2,0x30(%rsp) 758 759 call _aesni_ctr32_6x 760 761 vmovdqu ($Xip),$Xi # load Xi 762 lea 0x20+0x20($Xip),$Xip # size optimization 763 sub \$12,$len 764 mov \$0x60*2,$ret 765 vpshufb $Ii,$Xi,$Xi 766 767 call _aesni_ctr32_ghash_6x 768 vmovdqu 0x20(%rsp),$Z3 # I[5] 769 vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask 770 vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 771 vpunpckhqdq $Z3,$Z3,$T1 772 vmovdqu 0x20-0x20($Xip),$rndkey # borrow $rndkey for $HK 773 vmovups $inout0,-0x60($out) # save output 774 vpshufb $Ii,$inout0,$inout0 # but keep bswapped copy 775 vpxor $Z3,$T1,$T1 776 vmovups $inout1,-0x50($out) 777 vpshufb $Ii,$inout1,$inout1 778 vmovups $inout2,-0x40($out) 779 vpshufb $Ii,$inout2,$inout2 780 vmovups $inout3,-0x30($out) 781 vpshufb $Ii,$inout3,$inout3 782 vmovups $inout4,-0x20($out) 783 vpshufb $Ii,$inout4,$inout4 784 vmovups $inout5,-0x10($out) 785 vpshufb $Ii,$inout5,$inout5 786 vmovdqu $inout0,0x10(%rsp) # free $inout0 787 ___ 788 { my ($HK,$T3)=($rndkey,$inout0); 789 790 $code.=<<___; 791 vmovdqu 0x30(%rsp),$Z2 # I[4] 792 vmovdqu 0x10-0x20($Xip),$Ii # borrow $Ii for $Hkey^2 793 vpunpckhqdq $Z2,$Z2,$T2 794 vpclmulqdq \$0x00,$Hkey,$Z3,$Z1 795 vpxor $Z2,$T2,$T2 796 vpclmulqdq \$0x11,$Hkey,$Z3,$Z3 797 vpclmulqdq \$0x00,$HK,$T1,$T1 798 799 vmovdqu 0x40(%rsp),$T3 # I[3] 800 vpclmulqdq \$0x00,$Ii,$Z2,$Z0 801 vmovdqu 0x30-0x20($Xip),$Hkey # $Hkey^3 802 vpxor $Z1,$Z0,$Z0 803 vpunpckhqdq $T3,$T3,$Z1 804 vpclmulqdq \$0x11,$Ii,$Z2,$Z2 805 vpxor $T3,$Z1,$Z1 806 vpxor $Z3,$Z2,$Z2 807 vpclmulqdq \$0x10,$HK,$T2,$T2 808 vmovdqu 0x50-0x20($Xip),$HK 809 vpxor $T1,$T2,$T2 810 811 vmovdqu 0x50(%rsp),$T1 # I[2] 812 vpclmulqdq \$0x00,$Hkey,$T3,$Z3 813 vmovdqu 0x40-0x20($Xip),$Ii # borrow $Ii for $Hkey^4 814 vpxor $Z0,$Z3,$Z3 815 vpunpckhqdq $T1,$T1,$Z0 816 vpclmulqdq \$0x11,$Hkey,$T3,$T3 817 vpxor $T1,$Z0,$Z0 818 vpxor $Z2,$T3,$T3 819 vpclmulqdq \$0x00,$HK,$Z1,$Z1 820 vpxor $T2,$Z1,$Z1 821 822 vmovdqu 0x60(%rsp),$T2 # I[1] 823 vpclmulqdq \$0x00,$Ii,$T1,$Z2 824 vmovdqu 0x60-0x20($Xip),$Hkey # $Hkey^5 825 vpxor $Z3,$Z2,$Z2 826 vpunpckhqdq $T2,$T2,$Z3 827 vpclmulqdq \$0x11,$Ii,$T1,$T1 828 vpxor $T2,$Z3,$Z3 829 vpxor $T3,$T1,$T1 830 vpclmulqdq \$0x10,$HK,$Z0,$Z0 831 vmovdqu 0x80-0x20($Xip),$HK 832 vpxor $Z1,$Z0,$Z0 833 834 vpxor 0x70(%rsp),$Xi,$Xi # accumulate I[0] 835 vpclmulqdq \$0x00,$Hkey,$T2,$Z1 836 vmovdqu 0x70-0x20($Xip),$Ii # borrow $Ii for $Hkey^6 837 vpunpckhqdq $Xi,$Xi,$T3 838 vpxor $Z2,$Z1,$Z1 839 vpclmulqdq \$0x11,$Hkey,$T2,$T2 840 vpxor $Xi,$T3,$T3 841 vpxor $T1,$T2,$T2 842 vpclmulqdq \$0x00,$HK,$Z3,$Z3 843 vpxor $Z0,$Z3,$Z0 844 845 vpclmulqdq \$0x00,$Ii,$Xi,$Z2 846 vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 847 vpunpckhqdq $inout5,$inout5,$T1 848 vpclmulqdq \$0x11,$Ii,$Xi,$Xi 849 vpxor $inout5,$T1,$T1 850 vpxor $Z1,$Z2,$Z1 851 vpclmulqdq \$0x10,$HK,$T3,$T3 852 vmovdqu 0x20-0x20($Xip),$HK 853 vpxor $T2,$Xi,$Z3 854 vpxor $Z0,$T3,$Z2 855 856 vmovdqu 0x10-0x20($Xip),$Ii # borrow $Ii for $Hkey^2 857 vpxor $Z1,$Z3,$T3 # aggregated Karatsuba post-processing 858 vpclmulqdq \$0x00,$Hkey,$inout5,$Z0 859 vpxor $T3,$Z2,$Z2 860 vpunpckhqdq $inout4,$inout4,$T2 861 vpclmulqdq \$0x11,$Hkey,$inout5,$inout5 862 vpxor $inout4,$T2,$T2 863 vpslldq \$8,$Z2,$T3 864 vpclmulqdq \$0x00,$HK,$T1,$T1 865 vpxor $T3,$Z1,$Xi 866 vpsrldq \$8,$Z2,$Z2 867 vpxor $Z2,$Z3,$Z3 868 869 vpclmulqdq \$0x00,$Ii,$inout4,$Z1 870 vmovdqu 0x30-0x20($Xip),$Hkey # $Hkey^3 871 vpxor $Z0,$Z1,$Z1 872 vpunpckhqdq $inout3,$inout3,$T3 873 vpclmulqdq \$0x11,$Ii,$inout4,$inout4 874 vpxor $inout3,$T3,$T3 875 vpxor $inout5,$inout4,$inout4 876 vpalignr \$8,$Xi,$Xi,$inout5 # 1st phase 877 vpclmulqdq \$0x10,$HK,$T2,$T2 878 vmovdqu 0x50-0x20($Xip),$HK 879 vpxor $T1,$T2,$T2 880 881 vpclmulqdq \$0x00,$Hkey,$inout3,$Z0 882 vmovdqu 0x40-0x20($Xip),$Ii # borrow $Ii for $Hkey^4 883 vpxor $Z1,$Z0,$Z0 884 vpunpckhqdq $inout2,$inout2,$T1 885 vpclmulqdq \$0x11,$Hkey,$inout3,$inout3 886 vpxor $inout2,$T1,$T1 887 vpxor $inout4,$inout3,$inout3 888 vxorps 0x10(%rsp),$Z3,$Z3 # accumulate $inout0 889 vpclmulqdq \$0x00,$HK,$T3,$T3 890 vpxor $T2,$T3,$T3 891 892 vpclmulqdq \$0x10,0x10($const),$Xi,$Xi 893 vxorps $inout5,$Xi,$Xi 894 895 vpclmulqdq \$0x00,$Ii,$inout2,$Z1 896 vmovdqu 0x60-0x20($Xip),$Hkey # $Hkey^5 897 vpxor $Z0,$Z1,$Z1 898 vpunpckhqdq $inout1,$inout1,$T2 899 vpclmulqdq \$0x11,$Ii,$inout2,$inout2 900 vpxor $inout1,$T2,$T2 901 vpalignr \$8,$Xi,$Xi,$inout5 # 2nd phase 902 vpxor $inout3,$inout2,$inout2 903 vpclmulqdq \$0x10,$HK,$T1,$T1 904 vmovdqu 0x80-0x20($Xip),$HK 905 vpxor $T3,$T1,$T1 906 907 vxorps $Z3,$inout5,$inout5 908 vpclmulqdq \$0x10,0x10($const),$Xi,$Xi 909 vxorps $inout5,$Xi,$Xi 910 911 vpclmulqdq \$0x00,$Hkey,$inout1,$Z0 912 vmovdqu 0x70-0x20($Xip),$Ii # borrow $Ii for $Hkey^6 913 vpxor $Z1,$Z0,$Z0 914 vpunpckhqdq $Xi,$Xi,$T3 915 vpclmulqdq \$0x11,$Hkey,$inout1,$inout1 916 vpxor $Xi,$T3,$T3 917 vpxor $inout2,$inout1,$inout1 918 vpclmulqdq \$0x00,$HK,$T2,$T2 919 vpxor $T1,$T2,$T2 920 921 vpclmulqdq \$0x00,$Ii,$Xi,$Z1 922 vpclmulqdq \$0x11,$Ii,$Xi,$Z3 923 vpxor $Z0,$Z1,$Z1 924 vpclmulqdq \$0x10,$HK,$T3,$Z2 925 vpxor $inout1,$Z3,$Z3 926 vpxor $T2,$Z2,$Z2 927 928 vpxor $Z1,$Z3,$Z0 # aggregated Karatsuba post-processing 929 vpxor $Z0,$Z2,$Z2 930 vpslldq \$8,$Z2,$T1 931 vmovdqu 0x10($const),$Hkey # .Lpoly 932 vpsrldq \$8,$Z2,$Z2 933 vpxor $T1,$Z1,$Xi 934 vpxor $Z2,$Z3,$Z3 935 936 vpalignr \$8,$Xi,$Xi,$T2 # 1st phase 937 vpclmulqdq \$0x10,$Hkey,$Xi,$Xi 938 vpxor $T2,$Xi,$Xi 939 940 vpalignr \$8,$Xi,$Xi,$T2 # 2nd phase 941 vpclmulqdq \$0x10,$Hkey,$Xi,$Xi 942 vpxor $Z3,$T2,$T2 943 vpxor $T2,$Xi,$Xi 944 ___ 945 } 946 $code.=<<___; 947 vpshufb ($const),$Xi,$Xi # .Lbswap_mask 948 vmovdqu $Xi,-0x40($Xip) # output Xi 949 950 vzeroupper 951 ___ 952 $code.=<<___ if ($win64); 953 movaps -0xd8(%rax),%xmm6 954 movaps -0xc8(%rax),%xmm7 955 movaps -0xb8(%rax),%xmm8 956 movaps -0xa8(%rax),%xmm9 957 movaps -0x98(%rax),%xmm10 958 movaps -0x88(%rax),%xmm11 959 movaps -0x78(%rax),%xmm12 960 movaps -0x68(%rax),%xmm13 961 movaps -0x58(%rax),%xmm14 962 movaps -0x48(%rax),%xmm15 963 ___ 964 $code.=<<___; 965 mov -48(%rax),%r15 966 .cfi_restore %r15 967 mov -40(%rax),%r14 968 .cfi_restore %r14 969 mov -32(%rax),%r13 970 .cfi_restore %r13 971 mov -24(%rax),%r12 972 .cfi_restore %r12 973 mov -16(%rax),%rbp 974 .cfi_restore %rbp 975 mov -8(%rax),%rbx 976 .cfi_restore %rbx 977 lea (%rax),%rsp # restore %rsp 978 .cfi_def_cfa_register %rsp 979 .Lgcm_enc_abort: 980 mov $ret,%rax # return value 981 ret 982 .cfi_endproc 983 .size aesni_gcm_encrypt,.-aesni_gcm_encrypt 984 ___ 985 986 $code.=<<___; 987 .align 64 988 .Lbswap_mask: 989 .byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 990 .Lpoly: 991 .byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2 992 .Lone_msb: 993 .byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 994 .Ltwo_lsb: 995 .byte 2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 996 .Lone_lsb: 997 .byte 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 998 .asciz "AES-NI GCM module for x86_64, CRYPTOGAMS by <appro\@openssl.org>" 999 .align 64 1000 ___ 1001 if ($win64) { 1002 $rec="%rcx"; 1003 $frame="%rdx"; 1004 $context="%r8"; 1005 $disp="%r9"; 1006 1007 $code.=<<___ 1008 .extern __imp_RtlVirtualUnwind 1009 .type gcm_se_handler,\@abi-omnipotent 1010 .align 16 1011 gcm_se_handler: 1012 push %rsi 1013 push %rdi 1014 push %rbx 1015 push %rbp 1016 push %r12 1017 push %r13 1018 push %r14 1019 push %r15 1020 pushfq 1021 sub \$64,%rsp 1022 1023 mov 120($context),%rax # pull context->Rax 1024 mov 248($context),%rbx # pull context->Rip 1025 1026 mov 8($disp),%rsi # disp->ImageBase 1027 mov 56($disp),%r11 # disp->HandlerData 1028 1029 mov 0(%r11),%r10d # HandlerData[0] 1030 lea (%rsi,%r10),%r10 # prologue label 1031 cmp %r10,%rbx # context->Rip<prologue label 1032 jb .Lcommon_seh_tail 1033 1034 mov 152($context),%rax # pull context->Rsp 1035 1036 mov 4(%r11),%r10d # HandlerData[1] 1037 lea (%rsi,%r10),%r10 # epilogue label 1038 cmp %r10,%rbx # context->Rip>=epilogue label 1039 jae .Lcommon_seh_tail 1040 1041 mov 120($context),%rax # pull context->Rax 1042 1043 mov -48(%rax),%r15 1044 mov -40(%rax),%r14 1045 mov -32(%rax),%r13 1046 mov -24(%rax),%r12 1047 mov -16(%rax),%rbp 1048 mov -8(%rax),%rbx 1049 mov %r15,240($context) 1050 mov %r14,232($context) 1051 mov %r13,224($context) 1052 mov %r12,216($context) 1053 mov %rbp,160($context) 1054 mov %rbx,144($context) 1055 1056 lea -0xd8(%rax),%rsi # %xmm save area 1057 lea 512($context),%rdi # & context.Xmm6 1058 mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax) 1059 .long 0xa548f3fc # cld; rep movsq 1060 1061 .Lcommon_seh_tail: 1062 mov 8(%rax),%rdi 1063 mov 16(%rax),%rsi 1064 mov %rax,152($context) # restore context->Rsp 1065 mov %rsi,168($context) # restore context->Rsi 1066 mov %rdi,176($context) # restore context->Rdi 1067 1068 mov 40($disp),%rdi # disp->ContextRecord 1069 mov $context,%rsi # context 1070 mov \$154,%ecx # sizeof(CONTEXT) 1071 .long 0xa548f3fc # cld; rep movsq 1072 1073 mov $disp,%rsi 1074 xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER 1075 mov 8(%rsi),%rdx # arg2, disp->ImageBase 1076 mov 0(%rsi),%r8 # arg3, disp->ControlPc 1077 mov 16(%rsi),%r9 # arg4, disp->FunctionEntry 1078 mov 40(%rsi),%r10 # disp->ContextRecord 1079 lea 56(%rsi),%r11 # &disp->HandlerData 1080 lea 24(%rsi),%r12 # &disp->EstablisherFrame 1081 mov %r10,32(%rsp) # arg5 1082 mov %r11,40(%rsp) # arg6 1083 mov %r12,48(%rsp) # arg7 1084 mov %rcx,56(%rsp) # arg8, (NULL) 1085 call *__imp_RtlVirtualUnwind(%rip) 1086 1087 mov \$1,%eax # ExceptionContinueSearch 1088 add \$64,%rsp 1089 popfq 1090 pop %r15 1091 pop %r14 1092 pop %r13 1093 pop %r12 1094 pop %rbp 1095 pop %rbx 1096 pop %rdi 1097 pop %rsi 1098 ret 1099 .size gcm_se_handler,.-gcm_se_handler 1100 1101 .section .pdata 1102 .align 4 1103 .rva .LSEH_begin_aesni_gcm_decrypt 1104 .rva .LSEH_end_aesni_gcm_decrypt 1105 .rva .LSEH_gcm_dec_info 1106 1107 .rva .LSEH_begin_aesni_gcm_encrypt 1108 .rva .LSEH_end_aesni_gcm_encrypt 1109 .rva .LSEH_gcm_enc_info 1110 .section .xdata 1111 .align 8 1112 .LSEH_gcm_dec_info: 1113 .byte 9,0,0,0 1114 .rva gcm_se_handler 1115 .rva .Lgcm_dec_body,.Lgcm_dec_abort 1116 .LSEH_gcm_enc_info: 1117 .byte 9,0,0,0 1118 .rva gcm_se_handler 1119 .rva .Lgcm_enc_body,.Lgcm_enc_abort 1120 ___ 1121 } 1122 }}} else {{{ 1123 $code=<<___; # assembler is too old 1124 .text 1125 1126 .globl aesni_gcm_encrypt 1127 .type aesni_gcm_encrypt,\@abi-omnipotent 1128 aesni_gcm_encrypt: 1129 xor %eax,%eax 1130 ret 1131 .size aesni_gcm_encrypt,.-aesni_gcm_encrypt 1132 1133 .globl aesni_gcm_decrypt 1134 .type aesni_gcm_decrypt,\@abi-omnipotent 1135 aesni_gcm_decrypt: 1136 xor %eax,%eax 1137 ret 1138 .size aesni_gcm_decrypt,.-aesni_gcm_decrypt 1139 ___ 1140 }}} 1141 1142 $code =~ s/\`([^\`]*)\`/eval($1)/gem; 1143 1144 print $code; 1145 1146 close STDOUT; 1147