#! /usr/bin/env perl # Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved. # # Licensed under the OpenSSL license (the "License"). You may not use # this file except in compliance with the License. You can obtain a copy # in the file LICENSE in the source distribution or at # https://www.openssl.org/source/license.html # # ==================================================================== # Written by Andy Polyakov for the OpenSSL # project. The module is, however, dual licensed under OpenSSL and # CRYPTOGAMS licenses depending on where you obtain it. For further # details see http://www.openssl.org/~appro/cryptogams/. # ==================================================================== # # # AES-NI-CTR+GHASH stitch. # # February 2013 # # OpenSSL GCM implementation is organized in such way that its # performance is rather close to the sum of its streamed components, # in the context parallelized AES-NI CTR and modulo-scheduled # PCLMULQDQ-enabled GHASH. Unfortunately, as no stitch implementation # was observed to perform significantly better than the sum of the # components on contemporary CPUs, the effort was deemed impossible to # justify. This module is based on combination of Intel submissions, # [1] and [2], with MOVBE twist suggested by Ilya Albrekht and Max # Locktyukhin of Intel Corp. who verified that it reduces shuffles # pressure with notable relative improvement, achieving 1.0 cycle per # byte processed with 128-bit key on Haswell processor, 0.74 - on # Broadwell, 0.63 - on Skylake... [Mentioned results are raw profiled # measurements for favourable packet size, one divisible by 96. # Applications using the EVP interface will observe a few percent # worse performance.] # # Knights Landing processes 1 byte in 1.25 cycles (measured with EVP). # # [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest # [2] http://www.intel.com/content/dam/www/public/us/en/documents/software-support/enabling-high-performance-gcm.pdf $flavour = shift; $output = shift; if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } $win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or ( $xlate="${dir}../../../perlasm/x86_64-xlate.pl" and -f $xlate) or die "can't locate x86_64-xlate.pl"; # |$avx| in ghash-x86_64.pl must be set to at least 1; otherwise tags will # be computed incorrectly. # # In upstream, this is controlled by shelling out to the compiler to check # versions, but BoringSSL is intended to be used with pre-generated perlasm # output, so this isn't useful anyway. # # The upstream code uses the condition |$avx>1| even though no AVX2 # instructions are used, because it assumes MOVBE is supported by the assembler # if and only if AVX2 is also supported by the assembler; see # https://marc.info/?l=openssl-dev&m=146567589526984&w=2. $avx = 2; open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""; *STDOUT=*OUT; # See the comment above regarding why the condition is ($avx>1) when there are # no AVX2 instructions being used. if ($avx>1) {{{ ($inp,$out,$len,$key,$ivp,$Xip)=("%rdi","%rsi","%rdx","%rcx","%r8","%r9"); ($Ii,$T1,$T2,$Hkey, $Z0,$Z1,$Z2,$Z3,$Xi) = map("%xmm$_",(0..8)); ($inout0,$inout1,$inout2,$inout3,$inout4,$inout5,$rndkey) = map("%xmm$_",(9..15)); ($counter,$rounds,$ret,$const,$in0,$end0)=("%ebx","%ebp","%r10","%r11","%r14","%r15"); $code=<<___; .text .type _aesni_ctr32_ghash_6x,\@abi-omnipotent .align 32 _aesni_ctr32_ghash_6x: .cfi_startproc vmovdqu 0x20($const),$T2 # borrow $T2, .Lone_msb sub \$6,$len vpxor $Z0,$Z0,$Z0 # $Z0 = 0 vmovdqu 0x00-0x80($key),$rndkey vpaddb $T2,$T1,$inout1 vpaddb $T2,$inout1,$inout2 vpaddb $T2,$inout2,$inout3 vpaddb $T2,$inout3,$inout4 vpaddb $T2,$inout4,$inout5 vpxor $rndkey,$T1,$inout0 vmovdqu $Z0,16+8(%rsp) # "$Z3" = 0 jmp .Loop6x .align 32 .Loop6x: add \$`6<<24`,$counter jc .Lhandle_ctr32 # discard $inout[1-5]? vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 vpaddb $T2,$inout5,$T1 # next counter value vpxor $rndkey,$inout1,$inout1 vpxor $rndkey,$inout2,$inout2 .Lresume_ctr32: vmovdqu $T1,($ivp) # save next counter value vpclmulqdq \$0x10,$Hkey,$Z3,$Z1 vpxor $rndkey,$inout3,$inout3 vmovups 0x10-0x80($key),$T2 # borrow $T2 for $rndkey vpclmulqdq \$0x01,$Hkey,$Z3,$Z2 # At this point, the current block of 96 (0x60) bytes has already been # loaded into registers. Concurrently with processing it, we want to # load the next 96 bytes of input for the next round. Obviously, we can # only do this if there are at least 96 more bytes of input beyond the # input we're currently processing, or else we'd read past the end of # the input buffer. Here, we set |%r12| to 96 if there are at least 96 # bytes of input beyond the 96 bytes we're already processing, and we # set |%r12| to 0 otherwise. In the case where we set |%r12| to 96, # we'll read in the next block so that it is in registers for the next # loop iteration. In the case where we set |%r12| to 0, we'll re-read # the current block and then ignore what we re-read. # # At this point, |$in0| points to the current (already read into # registers) block, and |$end0| points to 2*96 bytes before the end of # the input. Thus, |$in0| > |$end0| means that we do not have the next # 96-byte block to read in, and |$in0| <= |$end0| means we do. xor %r12,%r12 cmp $in0,$end0 vaesenc $T2,$inout0,$inout0 vmovdqu 0x30+8(%rsp),$Ii # I[4] vpxor $rndkey,$inout4,$inout4 vpclmulqdq \$0x00,$Hkey,$Z3,$T1 vaesenc $T2,$inout1,$inout1 vpxor $rndkey,$inout5,$inout5 setnc %r12b vpclmulqdq \$0x11,$Hkey,$Z3,$Z3 vaesenc $T2,$inout2,$inout2 vmovdqu 0x10-0x20($Xip),$Hkey # $Hkey^2 neg %r12 vaesenc $T2,$inout3,$inout3 vpxor $Z1,$Z2,$Z2 vpclmulqdq \$0x00,$Hkey,$Ii,$Z1 vpxor $Z0,$Xi,$Xi # modulo-scheduled vaesenc $T2,$inout4,$inout4 vpxor $Z1,$T1,$Z0 and \$0x60,%r12 vmovups 0x20-0x80($key),$rndkey vpclmulqdq \$0x10,$Hkey,$Ii,$T1 vaesenc $T2,$inout5,$inout5 vpclmulqdq \$0x01,$Hkey,$Ii,$T2 lea ($in0,%r12),$in0 vaesenc $rndkey,$inout0,$inout0 vpxor 16+8(%rsp),$Xi,$Xi # modulo-scheduled [vpxor $Z3,$Xi,$Xi] vpclmulqdq \$0x11,$Hkey,$Ii,$Hkey vmovdqu 0x40+8(%rsp),$Ii # I[3] vaesenc $rndkey,$inout1,$inout1 movbe 0x58($in0),%r13 vaesenc $rndkey,$inout2,$inout2 movbe 0x50($in0),%r12 vaesenc $rndkey,$inout3,$inout3 mov %r13,0x20+8(%rsp) vaesenc $rndkey,$inout4,$inout4 mov %r12,0x28+8(%rsp) vmovdqu 0x30-0x20($Xip),$Z1 # borrow $Z1 for $Hkey^3 vaesenc $rndkey,$inout5,$inout5 vmovups 0x30-0x80($key),$rndkey vpxor $T1,$Z2,$Z2 vpclmulqdq \$0x00,$Z1,$Ii,$T1 vaesenc $rndkey,$inout0,$inout0 vpxor $T2,$Z2,$Z2 vpclmulqdq \$0x10,$Z1,$Ii,$T2 vaesenc $rndkey,$inout1,$inout1 vpxor $Hkey,$Z3,$Z3 vpclmulqdq \$0x01,$Z1,$Ii,$Hkey vaesenc $rndkey,$inout2,$inout2 vpclmulqdq \$0x11,$Z1,$Ii,$Z1 vmovdqu 0x50+8(%rsp),$Ii # I[2] vaesenc $rndkey,$inout3,$inout3 vaesenc $rndkey,$inout4,$inout4 vpxor $T1,$Z0,$Z0 vmovdqu 0x40-0x20($Xip),$T1 # borrow $T1 for $Hkey^4 vaesenc $rndkey,$inout5,$inout5 vmovups 0x40-0x80($key),$rndkey vpxor $T2,$Z2,$Z2 vpclmulqdq \$0x00,$T1,$Ii,$T2 vaesenc $rndkey,$inout0,$inout0 vpxor $Hkey,$Z2,$Z2 vpclmulqdq \$0x10,$T1,$Ii,$Hkey vaesenc $rndkey,$inout1,$inout1 movbe 0x48($in0),%r13 vpxor $Z1,$Z3,$Z3 vpclmulqdq \$0x01,$T1,$Ii,$Z1 vaesenc $rndkey,$inout2,$inout2 movbe 0x40($in0),%r12 vpclmulqdq \$0x11,$T1,$Ii,$T1 vmovdqu 0x60+8(%rsp),$Ii # I[1] vaesenc $rndkey,$inout3,$inout3 mov %r13,0x30+8(%rsp) vaesenc $rndkey,$inout4,$inout4 mov %r12,0x38+8(%rsp) vpxor $T2,$Z0,$Z0 vmovdqu 0x60-0x20($Xip),$T2 # borrow $T2 for $Hkey^5 vaesenc $rndkey,$inout5,$inout5 vmovups 0x50-0x80($key),$rndkey vpxor $Hkey,$Z2,$Z2 vpclmulqdq \$0x00,$T2,$Ii,$Hkey vaesenc $rndkey,$inout0,$inout0 vpxor $Z1,$Z2,$Z2 vpclmulqdq \$0x10,$T2,$Ii,$Z1 vaesenc $rndkey,$inout1,$inout1 movbe 0x38($in0),%r13 vpxor $T1,$Z3,$Z3 vpclmulqdq \$0x01,$T2,$Ii,$T1 vpxor 0x70+8(%rsp),$Xi,$Xi # accumulate I[0] vaesenc $rndkey,$inout2,$inout2 movbe 0x30($in0),%r12 vpclmulqdq \$0x11,$T2,$Ii,$T2 vaesenc $rndkey,$inout3,$inout3 mov %r13,0x40+8(%rsp) vaesenc $rndkey,$inout4,$inout4 mov %r12,0x48+8(%rsp) vpxor $Hkey,$Z0,$Z0 vmovdqu 0x70-0x20($Xip),$Hkey # $Hkey^6 vaesenc $rndkey,$inout5,$inout5 vmovups 0x60-0x80($key),$rndkey vpxor $Z1,$Z2,$Z2 vpclmulqdq \$0x10,$Hkey,$Xi,$Z1 vaesenc $rndkey,$inout0,$inout0 vpxor $T1,$Z2,$Z2 vpclmulqdq \$0x01,$Hkey,$Xi,$T1 vaesenc $rndkey,$inout1,$inout1 movbe 0x28($in0),%r13 vpxor $T2,$Z3,$Z3 vpclmulqdq \$0x00,$Hkey,$Xi,$T2 vaesenc $rndkey,$inout2,$inout2 movbe 0x20($in0),%r12 vpclmulqdq \$0x11,$Hkey,$Xi,$Xi vaesenc $rndkey,$inout3,$inout3 mov %r13,0x50+8(%rsp) vaesenc $rndkey,$inout4,$inout4 mov %r12,0x58+8(%rsp) vpxor $Z1,$Z2,$Z2 vaesenc $rndkey,$inout5,$inout5 vpxor $T1,$Z2,$Z2 vmovups 0x70-0x80($key),$rndkey vpslldq \$8,$Z2,$Z1 vpxor $T2,$Z0,$Z0 vmovdqu 0x10($const),$Hkey # .Lpoly vaesenc $rndkey,$inout0,$inout0 vpxor $Xi,$Z3,$Z3 vaesenc $rndkey,$inout1,$inout1 vpxor $Z1,$Z0,$Z0 movbe 0x18($in0),%r13 vaesenc $rndkey,$inout2,$inout2 movbe 0x10($in0),%r12 vpalignr \$8,$Z0,$Z0,$Ii # 1st phase vpclmulqdq \$0x10,$Hkey,$Z0,$Z0 mov %r13,0x60+8(%rsp) vaesenc $rndkey,$inout3,$inout3 mov %r12,0x68+8(%rsp) vaesenc $rndkey,$inout4,$inout4 vmovups 0x80-0x80($key),$T1 # borrow $T1 for $rndkey vaesenc $rndkey,$inout5,$inout5 vaesenc $T1,$inout0,$inout0 vmovups 0x90-0x80($key),$rndkey vaesenc $T1,$inout1,$inout1 vpsrldq \$8,$Z2,$Z2 vaesenc $T1,$inout2,$inout2 vpxor $Z2,$Z3,$Z3 vaesenc $T1,$inout3,$inout3 vpxor $Ii,$Z0,$Z0 movbe 0x08($in0),%r13 vaesenc $T1,$inout4,$inout4 movbe 0x00($in0),%r12 vaesenc $T1,$inout5,$inout5 vmovups 0xa0-0x80($key),$T1 cmp \$11,$rounds jb .Lenc_tail # 128-bit key vaesenc $rndkey,$inout0,$inout0 vaesenc $rndkey,$inout1,$inout1 vaesenc $rndkey,$inout2,$inout2 vaesenc $rndkey,$inout3,$inout3 vaesenc $rndkey,$inout4,$inout4 vaesenc $rndkey,$inout5,$inout5 vaesenc $T1,$inout0,$inout0 vaesenc $T1,$inout1,$inout1 vaesenc $T1,$inout2,$inout2 vaesenc $T1,$inout3,$inout3 vaesenc $T1,$inout4,$inout4 vmovups 0xb0-0x80($key),$rndkey vaesenc $T1,$inout5,$inout5 vmovups 0xc0-0x80($key),$T1 # 192-bit key support was removed. vaesenc $rndkey,$inout0,$inout0 vaesenc $rndkey,$inout1,$inout1 vaesenc $rndkey,$inout2,$inout2 vaesenc $rndkey,$inout3,$inout3 vaesenc $rndkey,$inout4,$inout4 vaesenc $rndkey,$inout5,$inout5 vaesenc $T1,$inout0,$inout0 vaesenc $T1,$inout1,$inout1 vaesenc $T1,$inout2,$inout2 vaesenc $T1,$inout3,$inout3 vaesenc $T1,$inout4,$inout4 vmovups 0xd0-0x80($key),$rndkey vaesenc $T1,$inout5,$inout5 vmovups 0xe0-0x80($key),$T1 jmp .Lenc_tail # 256-bit key .align 32 .Lhandle_ctr32: vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask vpshufb $Ii,$T1,$Z2 # byte-swap counter vmovdqu 0x30($const),$Z1 # borrow $Z1, .Ltwo_lsb vpaddd 0x40($const),$Z2,$inout1 # .Lone_lsb vpaddd $Z1,$Z2,$inout2 vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 vpaddd $Z1,$inout1,$inout3 vpshufb $Ii,$inout1,$inout1 vpaddd $Z1,$inout2,$inout4 vpshufb $Ii,$inout2,$inout2 vpxor $rndkey,$inout1,$inout1 vpaddd $Z1,$inout3,$inout5 vpshufb $Ii,$inout3,$inout3 vpxor $rndkey,$inout2,$inout2 vpaddd $Z1,$inout4,$T1 # byte-swapped next counter value vpshufb $Ii,$inout4,$inout4 vpshufb $Ii,$inout5,$inout5 vpshufb $Ii,$T1,$T1 # next counter value jmp .Lresume_ctr32 .align 32 .Lenc_tail: vaesenc $rndkey,$inout0,$inout0 vmovdqu $Z3,16+8(%rsp) # postpone vpxor $Z3,$Xi,$Xi vpalignr \$8,$Z0,$Z0,$Xi # 2nd phase vaesenc $rndkey,$inout1,$inout1 vpclmulqdq \$0x10,$Hkey,$Z0,$Z0 vpxor 0x00($inp),$T1,$T2 vaesenc $rndkey,$inout2,$inout2 vpxor 0x10($inp),$T1,$Ii vaesenc $rndkey,$inout3,$inout3 vpxor 0x20($inp),$T1,$Z1 vaesenc $rndkey,$inout4,$inout4 vpxor 0x30($inp),$T1,$Z2 vaesenc $rndkey,$inout5,$inout5 vpxor 0x40($inp),$T1,$Z3 vpxor 0x50($inp),$T1,$Hkey vmovdqu ($ivp),$T1 # load next counter value vaesenclast $T2,$inout0,$inout0 vmovdqu 0x20($const),$T2 # borrow $T2, .Lone_msb vaesenclast $Ii,$inout1,$inout1 vpaddb $T2,$T1,$Ii mov %r13,0x70+8(%rsp) lea 0x60($inp),$inp vaesenclast $Z1,$inout2,$inout2 vpaddb $T2,$Ii,$Z1 mov %r12,0x78+8(%rsp) lea 0x60($out),$out vmovdqu 0x00-0x80($key),$rndkey vaesenclast $Z2,$inout3,$inout3 vpaddb $T2,$Z1,$Z2 vaesenclast $Z3, $inout4,$inout4 vpaddb $T2,$Z2,$Z3 vaesenclast $Hkey,$inout5,$inout5 vpaddb $T2,$Z3,$Hkey add \$0x60,$ret sub \$0x6,$len jc .L6x_done vmovups $inout0,-0x60($out) # save output vpxor $rndkey,$T1,$inout0 vmovups $inout1,-0x50($out) vmovdqa $Ii,$inout1 # 0 latency vmovups $inout2,-0x40($out) vmovdqa $Z1,$inout2 # 0 latency vmovups $inout3,-0x30($out) vmovdqa $Z2,$inout3 # 0 latency vmovups $inout4,-0x20($out) vmovdqa $Z3,$inout4 # 0 latency vmovups $inout5,-0x10($out) vmovdqa $Hkey,$inout5 # 0 latency vmovdqu 0x20+8(%rsp),$Z3 # I[5] jmp .Loop6x .L6x_done: vpxor 16+8(%rsp),$Xi,$Xi # modulo-scheduled vpxor $Z0,$Xi,$Xi # modulo-scheduled ret .cfi_endproc .size _aesni_ctr32_ghash_6x,.-_aesni_ctr32_ghash_6x ___ ###################################################################### # # size_t aesni_gcm_[en|de]crypt(const void *inp, void *out, size_t len, # const AES_KEY *key, unsigned char iv[16], # struct { u128 Xi,H,Htbl[9]; } *Xip); $code.=<<___; .globl aesni_gcm_decrypt .type aesni_gcm_decrypt,\@function,6 .align 32 aesni_gcm_decrypt: .cfi_startproc xor $ret,$ret # We call |_aesni_ctr32_ghash_6x|, which requires at least 96 (0x60) # bytes of input. cmp \$0x60,$len # minimal accepted length jb .Lgcm_dec_abort lea (%rsp),%rax # save stack pointer .cfi_def_cfa_register %rax push %rbx .cfi_push %rbx push %rbp .cfi_push %rbp push %r12 .cfi_push %r12 push %r13 .cfi_push %r13 push %r14 .cfi_push %r14 push %r15 .cfi_push %r15 ___ $code.=<<___ if ($win64); lea -0xa8(%rsp),%rsp movaps %xmm6,-0xd8(%rax) movaps %xmm7,-0xc8(%rax) movaps %xmm8,-0xb8(%rax) movaps %xmm9,-0xa8(%rax) movaps %xmm10,-0x98(%rax) movaps %xmm11,-0x88(%rax) movaps %xmm12,-0x78(%rax) movaps %xmm13,-0x68(%rax) movaps %xmm14,-0x58(%rax) movaps %xmm15,-0x48(%rax) .Lgcm_dec_body: ___ $code.=<<___; vzeroupper vmovdqu ($ivp),$T1 # input counter value add \$-128,%rsp mov 12($ivp),$counter lea .Lbswap_mask(%rip),$const lea -0x80($key),$in0 # borrow $in0 mov \$0xf80,$end0 # borrow $end0 vmovdqu ($Xip),$Xi # load Xi and \$-128,%rsp # ensure stack alignment vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask lea 0x80($key),$key # size optimization lea 0x20+0x20($Xip),$Xip # size optimization mov 0xf0-0x80($key),$rounds vpshufb $Ii,$Xi,$Xi and $end0,$in0 and %rsp,$end0 sub $in0,$end0 jc .Ldec_no_key_aliasing cmp \$768,$end0 jnc .Ldec_no_key_aliasing sub $end0,%rsp # avoid aliasing with key .Ldec_no_key_aliasing: vmovdqu 0x50($inp),$Z3 # I[5] lea ($inp),$in0 vmovdqu 0x40($inp),$Z0 # |_aesni_ctr32_ghash_6x| requires |$end0| to point to 2*96 (0xc0) # bytes before the end of the input. Note, in particular, that this is # correct even if |$len| is not an even multiple of 96 or 16. XXX: This # seems to require that |$inp| + |$len| >= 2*96 (0xc0); i.e. |$inp| must # not be near the very beginning of the address space when |$len| < 2*96 # (0xc0). lea -0xc0($inp,$len),$end0 vmovdqu 0x30($inp),$Z1 shr \$4,$len xor $ret,$ret vmovdqu 0x20($inp),$Z2 vpshufb $Ii,$Z3,$Z3 # passed to _aesni_ctr32_ghash_6x vmovdqu 0x10($inp),$T2 vpshufb $Ii,$Z0,$Z0 vmovdqu ($inp),$Hkey vpshufb $Ii,$Z1,$Z1 vmovdqu $Z0,0x30(%rsp) vpshufb $Ii,$Z2,$Z2 vmovdqu $Z1,0x40(%rsp) vpshufb $Ii,$T2,$T2 vmovdqu $Z2,0x50(%rsp) vpshufb $Ii,$Hkey,$Hkey vmovdqu $T2,0x60(%rsp) vmovdqu $Hkey,0x70(%rsp) call _aesni_ctr32_ghash_6x vmovups $inout0,-0x60($out) # save output vmovups $inout1,-0x50($out) vmovups $inout2,-0x40($out) vmovups $inout3,-0x30($out) vmovups $inout4,-0x20($out) vmovups $inout5,-0x10($out) vpshufb ($const),$Xi,$Xi # .Lbswap_mask vmovdqu $Xi,-0x40($Xip) # output Xi vzeroupper ___ $code.=<<___ if ($win64); movaps -0xd8(%rax),%xmm6 movaps -0xc8(%rax),%xmm7 movaps -0xb8(%rax),%xmm8 movaps -0xa8(%rax),%xmm9 movaps -0x98(%rax),%xmm10 movaps -0x88(%rax),%xmm11 movaps -0x78(%rax),%xmm12 movaps -0x68(%rax),%xmm13 movaps -0x58(%rax),%xmm14 movaps -0x48(%rax),%xmm15 ___ $code.=<<___; mov -48(%rax),%r15 .cfi_restore %r15 mov -40(%rax),%r14 .cfi_restore %r14 mov -32(%rax),%r13 .cfi_restore %r13 mov -24(%rax),%r12 .cfi_restore %r12 mov -16(%rax),%rbp .cfi_restore %rbp mov -8(%rax),%rbx .cfi_restore %rbx lea (%rax),%rsp # restore %rsp .cfi_def_cfa_register %rsp .Lgcm_dec_abort: mov $ret,%rax # return value ret .cfi_endproc .size aesni_gcm_decrypt,.-aesni_gcm_decrypt ___ $code.=<<___; .type _aesni_ctr32_6x,\@abi-omnipotent .align 32 _aesni_ctr32_6x: .cfi_startproc vmovdqu 0x00-0x80($key),$Z0 # borrow $Z0 for $rndkey vmovdqu 0x20($const),$T2 # borrow $T2, .Lone_msb lea -1($rounds),%r13 vmovups 0x10-0x80($key),$rndkey lea 0x20-0x80($key),%r12 vpxor $Z0,$T1,$inout0 add \$`6<<24`,$counter jc .Lhandle_ctr32_2 vpaddb $T2,$T1,$inout1 vpaddb $T2,$inout1,$inout2 vpxor $Z0,$inout1,$inout1 vpaddb $T2,$inout2,$inout3 vpxor $Z0,$inout2,$inout2 vpaddb $T2,$inout3,$inout4 vpxor $Z0,$inout3,$inout3 vpaddb $T2,$inout4,$inout5 vpxor $Z0,$inout4,$inout4 vpaddb $T2,$inout5,$T1 vpxor $Z0,$inout5,$inout5 jmp .Loop_ctr32 .align 16 .Loop_ctr32: vaesenc $rndkey,$inout0,$inout0 vaesenc $rndkey,$inout1,$inout1 vaesenc $rndkey,$inout2,$inout2 vaesenc $rndkey,$inout3,$inout3 vaesenc $rndkey,$inout4,$inout4 vaesenc $rndkey,$inout5,$inout5 vmovups (%r12),$rndkey lea 0x10(%r12),%r12 dec %r13d jnz .Loop_ctr32 vmovdqu (%r12),$Hkey # last round key vaesenc $rndkey,$inout0,$inout0 vpxor 0x00($inp),$Hkey,$Z0 vaesenc $rndkey,$inout1,$inout1 vpxor 0x10($inp),$Hkey,$Z1 vaesenc $rndkey,$inout2,$inout2 vpxor 0x20($inp),$Hkey,$Z2 vaesenc $rndkey,$inout3,$inout3 vpxor 0x30($inp),$Hkey,$Xi vaesenc $rndkey,$inout4,$inout4 vpxor 0x40($inp),$Hkey,$T2 vaesenc $rndkey,$inout5,$inout5 vpxor 0x50($inp),$Hkey,$Hkey lea 0x60($inp),$inp vaesenclast $Z0,$inout0,$inout0 vaesenclast $Z1,$inout1,$inout1 vaesenclast $Z2,$inout2,$inout2 vaesenclast $Xi,$inout3,$inout3 vaesenclast $T2,$inout4,$inout4 vaesenclast $Hkey,$inout5,$inout5 vmovups $inout0,0x00($out) vmovups $inout1,0x10($out) vmovups $inout2,0x20($out) vmovups $inout3,0x30($out) vmovups $inout4,0x40($out) vmovups $inout5,0x50($out) lea 0x60($out),$out ret .align 32 .Lhandle_ctr32_2: vpshufb $Ii,$T1,$Z2 # byte-swap counter vmovdqu 0x30($const),$Z1 # borrow $Z1, .Ltwo_lsb vpaddd 0x40($const),$Z2,$inout1 # .Lone_lsb vpaddd $Z1,$Z2,$inout2 vpaddd $Z1,$inout1,$inout3 vpshufb $Ii,$inout1,$inout1 vpaddd $Z1,$inout2,$inout4 vpshufb $Ii,$inout2,$inout2 vpxor $Z0,$inout1,$inout1 vpaddd $Z1,$inout3,$inout5 vpshufb $Ii,$inout3,$inout3 vpxor $Z0,$inout2,$inout2 vpaddd $Z1,$inout4,$T1 # byte-swapped next counter value vpshufb $Ii,$inout4,$inout4 vpxor $Z0,$inout3,$inout3 vpshufb $Ii,$inout5,$inout5 vpxor $Z0,$inout4,$inout4 vpshufb $Ii,$T1,$T1 # next counter value vpxor $Z0,$inout5,$inout5 jmp .Loop_ctr32 .cfi_endproc .size _aesni_ctr32_6x,.-_aesni_ctr32_6x .globl aesni_gcm_encrypt .type aesni_gcm_encrypt,\@function,6 .align 32 aesni_gcm_encrypt: .cfi_startproc xor $ret,$ret # We call |_aesni_ctr32_6x| twice, each call consuming 96 bytes of # input. Then we call |_aesni_ctr32_ghash_6x|, which requires at # least 96 more bytes of input. cmp \$0x60*3,$len # minimal accepted length jb .Lgcm_enc_abort lea (%rsp),%rax # save stack pointer .cfi_def_cfa_register %rax push %rbx .cfi_push %rbx push %rbp .cfi_push %rbp push %r12 .cfi_push %r12 push %r13 .cfi_push %r13 push %r14 .cfi_push %r14 push %r15 .cfi_push %r15 ___ $code.=<<___ if ($win64); lea -0xa8(%rsp),%rsp movaps %xmm6,-0xd8(%rax) movaps %xmm7,-0xc8(%rax) movaps %xmm8,-0xb8(%rax) movaps %xmm9,-0xa8(%rax) movaps %xmm10,-0x98(%rax) movaps %xmm11,-0x88(%rax) movaps %xmm12,-0x78(%rax) movaps %xmm13,-0x68(%rax) movaps %xmm14,-0x58(%rax) movaps %xmm15,-0x48(%rax) .Lgcm_enc_body: ___ $code.=<<___; vzeroupper vmovdqu ($ivp),$T1 # input counter value add \$-128,%rsp mov 12($ivp),$counter lea .Lbswap_mask(%rip),$const lea -0x80($key),$in0 # borrow $in0 mov \$0xf80,$end0 # borrow $end0 lea 0x80($key),$key # size optimization vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask and \$-128,%rsp # ensure stack alignment mov 0xf0-0x80($key),$rounds and $end0,$in0 and %rsp,$end0 sub $in0,$end0 jc .Lenc_no_key_aliasing cmp \$768,$end0 jnc .Lenc_no_key_aliasing sub $end0,%rsp # avoid aliasing with key .Lenc_no_key_aliasing: lea ($out),$in0 # |_aesni_ctr32_ghash_6x| requires |$end0| to point to 2*96 (0xc0) # bytes before the end of the input. Note, in particular, that this is # correct even if |$len| is not an even multiple of 96 or 16. Unlike in # the decryption case, there's no caveat that |$out| must not be near # the very beginning of the address space, because we know that # |$len| >= 3*96 from the check above, and so we know # |$out| + |$len| >= 2*96 (0xc0). lea -0xc0($out,$len),$end0 shr \$4,$len call _aesni_ctr32_6x vpshufb $Ii,$inout0,$Xi # save bswapped output on stack vpshufb $Ii,$inout1,$T2 vmovdqu $Xi,0x70(%rsp) vpshufb $Ii,$inout2,$Z0 vmovdqu $T2,0x60(%rsp) vpshufb $Ii,$inout3,$Z1 vmovdqu $Z0,0x50(%rsp) vpshufb $Ii,$inout4,$Z2 vmovdqu $Z1,0x40(%rsp) vpshufb $Ii,$inout5,$Z3 # passed to _aesni_ctr32_ghash_6x vmovdqu $Z2,0x30(%rsp) call _aesni_ctr32_6x vmovdqu ($Xip),$Xi # load Xi lea 0x20+0x20($Xip),$Xip # size optimization sub \$12,$len mov \$0x60*2,$ret vpshufb $Ii,$Xi,$Xi call _aesni_ctr32_ghash_6x vmovdqu 0x20(%rsp),$Z3 # I[5] vmovdqu ($const),$Ii # borrow $Ii for .Lbswap_mask vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 vpunpckhqdq $Z3,$Z3,$T1 vmovdqu 0x20-0x20($Xip),$rndkey # borrow $rndkey for $HK vmovups $inout0,-0x60($out) # save output vpshufb $Ii,$inout0,$inout0 # but keep bswapped copy vpxor $Z3,$T1,$T1 vmovups $inout1,-0x50($out) vpshufb $Ii,$inout1,$inout1 vmovups $inout2,-0x40($out) vpshufb $Ii,$inout2,$inout2 vmovups $inout3,-0x30($out) vpshufb $Ii,$inout3,$inout3 vmovups $inout4,-0x20($out) vpshufb $Ii,$inout4,$inout4 vmovups $inout5,-0x10($out) vpshufb $Ii,$inout5,$inout5 vmovdqu $inout0,0x10(%rsp) # free $inout0 ___ { my ($HK,$T3)=($rndkey,$inout0); $code.=<<___; vmovdqu 0x30(%rsp),$Z2 # I[4] vmovdqu 0x10-0x20($Xip),$Ii # borrow $Ii for $Hkey^2 vpunpckhqdq $Z2,$Z2,$T2 vpclmulqdq \$0x00,$Hkey,$Z3,$Z1 vpxor $Z2,$T2,$T2 vpclmulqdq \$0x11,$Hkey,$Z3,$Z3 vpclmulqdq \$0x00,$HK,$T1,$T1 vmovdqu 0x40(%rsp),$T3 # I[3] vpclmulqdq \$0x00,$Ii,$Z2,$Z0 vmovdqu 0x30-0x20($Xip),$Hkey # $Hkey^3 vpxor $Z1,$Z0,$Z0 vpunpckhqdq $T3,$T3,$Z1 vpclmulqdq \$0x11,$Ii,$Z2,$Z2 vpxor $T3,$Z1,$Z1 vpxor $Z3,$Z2,$Z2 vpclmulqdq \$0x10,$HK,$T2,$T2 vmovdqu 0x50-0x20($Xip),$HK vpxor $T1,$T2,$T2 vmovdqu 0x50(%rsp),$T1 # I[2] vpclmulqdq \$0x00,$Hkey,$T3,$Z3 vmovdqu 0x40-0x20($Xip),$Ii # borrow $Ii for $Hkey^4 vpxor $Z0,$Z3,$Z3 vpunpckhqdq $T1,$T1,$Z0 vpclmulqdq \$0x11,$Hkey,$T3,$T3 vpxor $T1,$Z0,$Z0 vpxor $Z2,$T3,$T3 vpclmulqdq \$0x00,$HK,$Z1,$Z1 vpxor $T2,$Z1,$Z1 vmovdqu 0x60(%rsp),$T2 # I[1] vpclmulqdq \$0x00,$Ii,$T1,$Z2 vmovdqu 0x60-0x20($Xip),$Hkey # $Hkey^5 vpxor $Z3,$Z2,$Z2 vpunpckhqdq $T2,$T2,$Z3 vpclmulqdq \$0x11,$Ii,$T1,$T1 vpxor $T2,$Z3,$Z3 vpxor $T3,$T1,$T1 vpclmulqdq \$0x10,$HK,$Z0,$Z0 vmovdqu 0x80-0x20($Xip),$HK vpxor $Z1,$Z0,$Z0 vpxor 0x70(%rsp),$Xi,$Xi # accumulate I[0] vpclmulqdq \$0x00,$Hkey,$T2,$Z1 vmovdqu 0x70-0x20($Xip),$Ii # borrow $Ii for $Hkey^6 vpunpckhqdq $Xi,$Xi,$T3 vpxor $Z2,$Z1,$Z1 vpclmulqdq \$0x11,$Hkey,$T2,$T2 vpxor $Xi,$T3,$T3 vpxor $T1,$T2,$T2 vpclmulqdq \$0x00,$HK,$Z3,$Z3 vpxor $Z0,$Z3,$Z0 vpclmulqdq \$0x00,$Ii,$Xi,$Z2 vmovdqu 0x00-0x20($Xip),$Hkey # $Hkey^1 vpunpckhqdq $inout5,$inout5,$T1 vpclmulqdq \$0x11,$Ii,$Xi,$Xi vpxor $inout5,$T1,$T1 vpxor $Z1,$Z2,$Z1 vpclmulqdq \$0x10,$HK,$T3,$T3 vmovdqu 0x20-0x20($Xip),$HK vpxor $T2,$Xi,$Z3 vpxor $Z0,$T3,$Z2 vmovdqu 0x10-0x20($Xip),$Ii # borrow $Ii for $Hkey^2 vpxor $Z1,$Z3,$T3 # aggregated Karatsuba post-processing vpclmulqdq \$0x00,$Hkey,$inout5,$Z0 vpxor $T3,$Z2,$Z2 vpunpckhqdq $inout4,$inout4,$T2 vpclmulqdq \$0x11,$Hkey,$inout5,$inout5 vpxor $inout4,$T2,$T2 vpslldq \$8,$Z2,$T3 vpclmulqdq \$0x00,$HK,$T1,$T1 vpxor $T3,$Z1,$Xi vpsrldq \$8,$Z2,$Z2 vpxor $Z2,$Z3,$Z3 vpclmulqdq \$0x00,$Ii,$inout4,$Z1 vmovdqu 0x30-0x20($Xip),$Hkey # $Hkey^3 vpxor $Z0,$Z1,$Z1 vpunpckhqdq $inout3,$inout3,$T3 vpclmulqdq \$0x11,$Ii,$inout4,$inout4 vpxor $inout3,$T3,$T3 vpxor $inout5,$inout4,$inout4 vpalignr \$8,$Xi,$Xi,$inout5 # 1st phase vpclmulqdq \$0x10,$HK,$T2,$T2 vmovdqu 0x50-0x20($Xip),$HK vpxor $T1,$T2,$T2 vpclmulqdq \$0x00,$Hkey,$inout3,$Z0 vmovdqu 0x40-0x20($Xip),$Ii # borrow $Ii for $Hkey^4 vpxor $Z1,$Z0,$Z0 vpunpckhqdq $inout2,$inout2,$T1 vpclmulqdq \$0x11,$Hkey,$inout3,$inout3 vpxor $inout2,$T1,$T1 vpxor $inout4,$inout3,$inout3 vxorps 0x10(%rsp),$Z3,$Z3 # accumulate $inout0 vpclmulqdq \$0x00,$HK,$T3,$T3 vpxor $T2,$T3,$T3 vpclmulqdq \$0x10,0x10($const),$Xi,$Xi vxorps $inout5,$Xi,$Xi vpclmulqdq \$0x00,$Ii,$inout2,$Z1 vmovdqu 0x60-0x20($Xip),$Hkey # $Hkey^5 vpxor $Z0,$Z1,$Z1 vpunpckhqdq $inout1,$inout1,$T2 vpclmulqdq \$0x11,$Ii,$inout2,$inout2 vpxor $inout1,$T2,$T2 vpalignr \$8,$Xi,$Xi,$inout5 # 2nd phase vpxor $inout3,$inout2,$inout2 vpclmulqdq \$0x10,$HK,$T1,$T1 vmovdqu 0x80-0x20($Xip),$HK vpxor $T3,$T1,$T1 vxorps $Z3,$inout5,$inout5 vpclmulqdq \$0x10,0x10($const),$Xi,$Xi vxorps $inout5,$Xi,$Xi vpclmulqdq \$0x00,$Hkey,$inout1,$Z0 vmovdqu 0x70-0x20($Xip),$Ii # borrow $Ii for $Hkey^6 vpxor $Z1,$Z0,$Z0 vpunpckhqdq $Xi,$Xi,$T3 vpclmulqdq \$0x11,$Hkey,$inout1,$inout1 vpxor $Xi,$T3,$T3 vpxor $inout2,$inout1,$inout1 vpclmulqdq \$0x00,$HK,$T2,$T2 vpxor $T1,$T2,$T2 vpclmulqdq \$0x00,$Ii,$Xi,$Z1 vpclmulqdq \$0x11,$Ii,$Xi,$Z3 vpxor $Z0,$Z1,$Z1 vpclmulqdq \$0x10,$HK,$T3,$Z2 vpxor $inout1,$Z3,$Z3 vpxor $T2,$Z2,$Z2 vpxor $Z1,$Z3,$Z0 # aggregated Karatsuba post-processing vpxor $Z0,$Z2,$Z2 vpslldq \$8,$Z2,$T1 vmovdqu 0x10($const),$Hkey # .Lpoly vpsrldq \$8,$Z2,$Z2 vpxor $T1,$Z1,$Xi vpxor $Z2,$Z3,$Z3 vpalignr \$8,$Xi,$Xi,$T2 # 1st phase vpclmulqdq \$0x10,$Hkey,$Xi,$Xi vpxor $T2,$Xi,$Xi vpalignr \$8,$Xi,$Xi,$T2 # 2nd phase vpclmulqdq \$0x10,$Hkey,$Xi,$Xi vpxor $Z3,$T2,$T2 vpxor $T2,$Xi,$Xi ___ } $code.=<<___; vpshufb ($const),$Xi,$Xi # .Lbswap_mask vmovdqu $Xi,-0x40($Xip) # output Xi vzeroupper ___ $code.=<<___ if ($win64); movaps -0xd8(%rax),%xmm6 movaps -0xc8(%rax),%xmm7 movaps -0xb8(%rax),%xmm8 movaps -0xa8(%rax),%xmm9 movaps -0x98(%rax),%xmm10 movaps -0x88(%rax),%xmm11 movaps -0x78(%rax),%xmm12 movaps -0x68(%rax),%xmm13 movaps -0x58(%rax),%xmm14 movaps -0x48(%rax),%xmm15 ___ $code.=<<___; mov -48(%rax),%r15 .cfi_restore %r15 mov -40(%rax),%r14 .cfi_restore %r14 mov -32(%rax),%r13 .cfi_restore %r13 mov -24(%rax),%r12 .cfi_restore %r12 mov -16(%rax),%rbp .cfi_restore %rbp mov -8(%rax),%rbx .cfi_restore %rbx lea (%rax),%rsp # restore %rsp .cfi_def_cfa_register %rsp .Lgcm_enc_abort: mov $ret,%rax # return value ret .cfi_endproc .size aesni_gcm_encrypt,.-aesni_gcm_encrypt ___ $code.=<<___; .align 64 .Lbswap_mask: .byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 .Lpoly: .byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2 .Lone_msb: .byte 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 .Ltwo_lsb: .byte 2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 .Lone_lsb: .byte 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 .asciz "AES-NI GCM module for x86_64, CRYPTOGAMS by " .align 64 ___ if ($win64) { $rec="%rcx"; $frame="%rdx"; $context="%r8"; $disp="%r9"; $code.=<<___ .extern __imp_RtlVirtualUnwind .type gcm_se_handler,\@abi-omnipotent .align 16 gcm_se_handler: push %rsi push %rdi push %rbx push %rbp push %r12 push %r13 push %r14 push %r15 pushfq sub \$64,%rsp mov 120($context),%rax # pull context->Rax mov 248($context),%rbx # pull context->Rip mov 8($disp),%rsi # disp->ImageBase mov 56($disp),%r11 # disp->HandlerData mov 0(%r11),%r10d # HandlerData[0] lea (%rsi,%r10),%r10 # prologue label cmp %r10,%rbx # context->RipRsp mov 4(%r11),%r10d # HandlerData[1] lea (%rsi,%r10),%r10 # epilogue label cmp %r10,%rbx # context->Rip>=epilogue label jae .Lcommon_seh_tail mov 120($context),%rax # pull context->Rax mov -48(%rax),%r15 mov -40(%rax),%r14 mov -32(%rax),%r13 mov -24(%rax),%r12 mov -16(%rax),%rbp mov -8(%rax),%rbx mov %r15,240($context) mov %r14,232($context) mov %r13,224($context) mov %r12,216($context) mov %rbp,160($context) mov %rbx,144($context) lea -0xd8(%rax),%rsi # %xmm save area lea 512($context),%rdi # & context.Xmm6 mov \$20,%ecx # 10*sizeof(%xmm0)/sizeof(%rax) .long 0xa548f3fc # cld; rep movsq .Lcommon_seh_tail: mov 8(%rax),%rdi mov 16(%rax),%rsi mov %rax,152($context) # restore context->Rsp mov %rsi,168($context) # restore context->Rsi mov %rdi,176($context) # restore context->Rdi mov 40($disp),%rdi # disp->ContextRecord mov $context,%rsi # context mov \$154,%ecx # sizeof(CONTEXT) .long 0xa548f3fc # cld; rep movsq mov $disp,%rsi xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER mov 8(%rsi),%rdx # arg2, disp->ImageBase mov 0(%rsi),%r8 # arg3, disp->ControlPc mov 16(%rsi),%r9 # arg4, disp->FunctionEntry mov 40(%rsi),%r10 # disp->ContextRecord lea 56(%rsi),%r11 # &disp->HandlerData lea 24(%rsi),%r12 # &disp->EstablisherFrame mov %r10,32(%rsp) # arg5 mov %r11,40(%rsp) # arg6 mov %r12,48(%rsp) # arg7 mov %rcx,56(%rsp) # arg8, (NULL) call *__imp_RtlVirtualUnwind(%rip) mov \$1,%eax # ExceptionContinueSearch add \$64,%rsp popfq pop %r15 pop %r14 pop %r13 pop %r12 pop %rbp pop %rbx pop %rdi pop %rsi ret .size gcm_se_handler,.-gcm_se_handler .section .pdata .align 4 .rva .LSEH_begin_aesni_gcm_decrypt .rva .LSEH_end_aesni_gcm_decrypt .rva .LSEH_gcm_dec_info .rva .LSEH_begin_aesni_gcm_encrypt .rva .LSEH_end_aesni_gcm_encrypt .rva .LSEH_gcm_enc_info .section .xdata .align 8 .LSEH_gcm_dec_info: .byte 9,0,0,0 .rva gcm_se_handler .rva .Lgcm_dec_body,.Lgcm_dec_abort .LSEH_gcm_enc_info: .byte 9,0,0,0 .rva gcm_se_handler .rva .Lgcm_enc_body,.Lgcm_enc_abort ___ } }}} $code =~ s/\`([^\`]*)\`/eval($1)/gem; print $code; close STDOUT or die "error closing STDOUT";