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#! /usr/bin/env perl |
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# Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved. |
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# |
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# Licensed under the OpenSSL license (the "License"). You may not use |
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# this file except in compliance with the License. You can obtain a copy |
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# in the file LICENSE in the source distribution or at |
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# https://www.openssl.org/source/license.html |
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# |
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# ==================================================================== |
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# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL |
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# project. The module is, however, dual licensed under OpenSSL and |
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# CRYPTOGAMS licenses depending on where you obtain it. For further |
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# details see http://www.openssl.org/~appro/cryptogams/. |
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# ==================================================================== |
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# |
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# March, June 2010 |
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# |
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# The module implements "4-bit" GCM GHASH function and underlying |
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# single multiplication operation in GF(2^128). "4-bit" means that |
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# it uses 256 bytes per-key table [+128 bytes shared table]. GHASH |
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# function features so called "528B" variant utilizing additional |
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# 256+16 bytes of per-key storage [+512 bytes shared table]. |
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# Performance results are for this streamed GHASH subroutine and are |
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# expressed in cycles per processed byte, less is better: |
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# |
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# gcc 3.4.x(*) assembler |
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# |
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# P4 28.6 14.0 +100% |
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# Opteron 19.3 7.7 +150% |
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# Core2 17.8 8.1(**) +120% |
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# Atom 31.6 16.8 +88% |
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# VIA Nano 21.8 10.1 +115% |
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# |
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# (*) comparison is not completely fair, because C results are |
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# for vanilla "256B" implementation, while assembler results |
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# are for "528B";-) |
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# (**) it's mystery [to me] why Core2 result is not same as for |
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# Opteron; |
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# May 2010 |
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# |
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# Add PCLMULQDQ version performing at 2.02 cycles per processed byte. |
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# See ghash-x86.pl for background information and details about coding |
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# techniques. |
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# |
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# Special thanks to David Woodhouse for providing access to a |
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# Westmere-based system on behalf of Intel Open Source Technology Centre. |
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# December 2012 |
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# |
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# Overhaul: aggregate Karatsuba post-processing, improve ILP in |
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# reduction_alg9, increase reduction aggregate factor to 4x. As for |
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# the latter. ghash-x86.pl discusses that it makes lesser sense to |
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# increase aggregate factor. Then why increase here? Critical path |
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# consists of 3 independent pclmulqdq instructions, Karatsuba post- |
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# processing and reduction. "On top" of this we lay down aggregated |
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# multiplication operations, triplets of independent pclmulqdq's. As |
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# issue rate for pclmulqdq is limited, it makes lesser sense to |
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# aggregate more multiplications than it takes to perform remaining |
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# non-multiplication operations. 2x is near-optimal coefficient for |
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# contemporary Intel CPUs (therefore modest improvement coefficient), |
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# but not for Bulldozer. Latter is because logical SIMD operations |
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# are twice as slow in comparison to Intel, so that critical path is |
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# longer. A CPU with higher pclmulqdq issue rate would also benefit |
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# from higher aggregate factor... |
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# |
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# Westmere 1.78(+13%) |
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# Sandy Bridge 1.80(+8%) |
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# Ivy Bridge 1.80(+7%) |
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# Haswell 0.55(+93%) (if system doesn't support AVX) |
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# Broadwell 0.45(+110%)(if system doesn't support AVX) |
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# Skylake 0.44(+110%)(if system doesn't support AVX) |
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# Bulldozer 1.49(+27%) |
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# Silvermont 2.88(+13%) |
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# Knights L 2.12(-) (if system doesn't support AVX) |
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# Goldmont 1.08(+24%) |
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# March 2013 |
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# |
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# ... 8x aggregate factor AVX code path is using reduction algorithm |
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# suggested by Shay Gueron[1]. Even though contemporary AVX-capable |
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# CPUs such as Sandy and Ivy Bridge can execute it, the code performs |
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# sub-optimally in comparison to above mentioned version. But thanks |
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# to Ilya Albrekht and Max Locktyukhin of Intel Corp. we knew that |
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# it performs in 0.41 cycles per byte on Haswell processor, in |
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# 0.29 on Broadwell, and in 0.36 on Skylake. |
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# |
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# Knights Landing achieves 1.09 cpb. |
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# |
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# [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest |
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# This file was patched in BoringSSL to remove the variable-time 4-bit |
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# implementation. |
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$flavour = shift; |
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$output = shift; |
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if ($flavour =~ /\./) { $output = $flavour; undef $flavour; } |
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$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/); |
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$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1; |
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( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or |
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( $xlate="${dir}../../../perlasm/x86_64-xlate.pl" and -f $xlate) or |
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die "can't locate x86_64-xlate.pl"; |
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# See the notes about |$avx| in aesni-gcm-x86_64.pl; otherwise tags will be |
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# computed incorrectly. |
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# |
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# In upstream, this is controlled by shelling out to the compiler to check |
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# versions, but BoringSSL is intended to be used with pre-generated perlasm |
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# output, so this isn't useful anyway. |
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$avx = 1; |
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open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""; |
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*STDOUT=*OUT; |
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$do4xaggr=1; |
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$code=<<___; |
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.text |
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.extern OPENSSL_ia32cap_P |
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___ |
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###################################################################### |
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# PCLMULQDQ version. |
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@_4args=$win64? ("%rcx","%rdx","%r8", "%r9") : # Win64 order |
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("%rdi","%rsi","%rdx","%rcx"); # Unix order |
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($Xi,$Xhi)=("%xmm0","%xmm1"); $Hkey="%xmm2"; |
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($T1,$T2,$T3)=("%xmm3","%xmm4","%xmm5"); |
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sub clmul64x64_T2 { # minimal register pressure |
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my ($Xhi,$Xi,$Hkey,$HK)=@_; |
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if (!defined($HK)) { $HK = $T2; |
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$code.=<<___; |
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movdqa $Xi,$Xhi # |
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pshufd \$0b01001110,$Xi,$T1 |
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pshufd \$0b01001110,$Hkey,$T2 |
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pxor $Xi,$T1 # |
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pxor $Hkey,$T2 |
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___ |
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} else { |
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$code.=<<___; |
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movdqa $Xi,$Xhi # |
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pshufd \$0b01001110,$Xi,$T1 |
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pxor $Xi,$T1 # |
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___ |
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} |
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$code.=<<___; |
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pclmulqdq \$0x00,$Hkey,$Xi ####### |
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pclmulqdq \$0x11,$Hkey,$Xhi ####### |
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pclmulqdq \$0x00,$HK,$T1 ####### |
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pxor $Xi,$T1 # |
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pxor $Xhi,$T1 # |
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movdqa $T1,$T2 # |
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psrldq \$8,$T1 |
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pslldq \$8,$T2 # |
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pxor $T1,$Xhi |
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pxor $T2,$Xi # |
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___ |
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} |
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sub reduction_alg9 { # 17/11 times faster than Intel version |
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my ($Xhi,$Xi) = @_; |
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$code.=<<___; |
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# 1st phase |
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movdqa $Xi,$T2 # |
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movdqa $Xi,$T1 |
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psllq \$5,$Xi |
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pxor $Xi,$T1 # |
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psllq \$1,$Xi |
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pxor $T1,$Xi # |
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psllq \$57,$Xi # |
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movdqa $Xi,$T1 # |
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pslldq \$8,$Xi |
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psrldq \$8,$T1 # |
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pxor $T2,$Xi |
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pxor $T1,$Xhi # |
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# 2nd phase |
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movdqa $Xi,$T2 |
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psrlq \$1,$Xi |
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pxor $T2,$Xhi # |
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pxor $Xi,$T2 |
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psrlq \$5,$Xi |
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pxor $T2,$Xi # |
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psrlq \$1,$Xi # |
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pxor $Xhi,$Xi # |
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___ |
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} |
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{ my ($Htbl,$Xip)=@_4args; |
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my $HK="%xmm6"; |
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$code.=<<___; |
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.globl gcm_init_clmul |
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.type gcm_init_clmul,\@abi-omnipotent |
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.align 16 |
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gcm_init_clmul: |
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.cfi_startproc |
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.L_init_clmul: |
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___ |
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$code.=<<___ if ($win64); |
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.LSEH_begin_gcm_init_clmul: |
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# I can't trust assembler to use specific encoding:-( |
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.byte 0x48,0x83,0xec,0x18 #sub $0x18,%rsp |
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.byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp) |
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___ |
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$code.=<<___; |
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movdqu ($Xip),$Hkey |
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pshufd \$0b01001110,$Hkey,$Hkey # dword swap |
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# <<1 twist |
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pshufd \$0b11111111,$Hkey,$T2 # broadcast uppermost dword |
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movdqa $Hkey,$T1 |
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psllq \$1,$Hkey |
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pxor $T3,$T3 # |
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psrlq \$63,$T1 |
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pcmpgtd $T2,$T3 # broadcast carry bit |
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pslldq \$8,$T1 |
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por $T1,$Hkey # H<<=1 |
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# magic reduction |
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pand .L0x1c2_polynomial(%rip),$T3 |
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pxor $T3,$Hkey # if(carry) H^=0x1c2_polynomial |
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# calculate H^2 |
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pshufd \$0b01001110,$Hkey,$HK |
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movdqa $Hkey,$Xi |
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pxor $Hkey,$HK |
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___ |
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&clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); |
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&reduction_alg9 ($Xhi,$Xi); |
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$code.=<<___; |
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pshufd \$0b01001110,$Hkey,$T1 |
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pshufd \$0b01001110,$Xi,$T2 |
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pxor $Hkey,$T1 # Karatsuba pre-processing |
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movdqu $Hkey,0x00($Htbl) # save H |
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pxor $Xi,$T2 # Karatsuba pre-processing |
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movdqu $Xi,0x10($Htbl) # save H^2 |
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palignr \$8,$T1,$T2 # low part is H.lo^H.hi... |
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movdqu $T2,0x20($Htbl) # save Karatsuba "salt" |
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___ |
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if ($do4xaggr) { |
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&clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H^3 |
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&reduction_alg9 ($Xhi,$Xi); |
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$code.=<<___; |
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movdqa $Xi,$T3 |
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___ |
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&clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H^4 |
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&reduction_alg9 ($Xhi,$Xi); |
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$code.=<<___; |
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pshufd \$0b01001110,$T3,$T1 |
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pshufd \$0b01001110,$Xi,$T2 |
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pxor $T3,$T1 # Karatsuba pre-processing |
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movdqu $T3,0x30($Htbl) # save H^3 |
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pxor $Xi,$T2 # Karatsuba pre-processing |
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movdqu $Xi,0x40($Htbl) # save H^4 |
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palignr \$8,$T1,$T2 # low part is H^3.lo^H^3.hi... |
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movdqu $T2,0x50($Htbl) # save Karatsuba "salt" |
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___ |
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} |
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$code.=<<___ if ($win64); |
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movaps (%rsp),%xmm6 |
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lea 0x18(%rsp),%rsp |
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.LSEH_end_gcm_init_clmul: |
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___ |
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$code.=<<___; |
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ret |
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.cfi_endproc |
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.size gcm_init_clmul,.-gcm_init_clmul |
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___ |
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} |
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{ my ($Xip,$Htbl)=@_4args; |
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$code.=<<___; |
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.globl gcm_gmult_clmul |
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.type gcm_gmult_clmul,\@abi-omnipotent |
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.align 16 |
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gcm_gmult_clmul: |
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.cfi_startproc |
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.L_gmult_clmul: |
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movdqu ($Xip),$Xi |
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movdqa .Lbswap_mask(%rip),$T3 |
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movdqu ($Htbl),$Hkey |
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movdqu 0x20($Htbl),$T2 |
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pshufb $T3,$Xi |
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___ |
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&clmul64x64_T2 ($Xhi,$Xi,$Hkey,$T2); |
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$code.=<<___ if (0 || (&reduction_alg9($Xhi,$Xi)&&0)); |
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# experimental alternative. special thing about is that there |
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# no dependency between the two multiplications... |
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mov \$`0xE1<<1`,%eax |
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mov \$0xA040608020C0E000,%r10 # ((7..0)·0xE0)&0xff |
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mov \$0x07,%r11d |
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movq %rax,$T1 |
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movq %r10,$T2 |
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movq %r11,$T3 # borrow $T3 |
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pand $Xi,$T3 |
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pshufb $T3,$T2 # ($Xi&7)·0xE0 |
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movq %rax,$T3 |
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pclmulqdq \$0x00,$Xi,$T1 # ·(0xE1<<1) |
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pxor $Xi,$T2 |
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pslldq \$15,$T2 |
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paddd $T2,$T2 # <<(64+56+1) |
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pxor $T2,$Xi |
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pclmulqdq \$0x01,$T3,$Xi |
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movdqa .Lbswap_mask(%rip),$T3 # reload $T3 |
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psrldq \$1,$T1 |
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pxor $T1,$Xhi |
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pslldq \$7,$Xi |
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pxor $Xhi,$Xi |
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___ |
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$code.=<<___; |
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pshufb $T3,$Xi |
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movdqu $Xi,($Xip) |
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ret |
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.cfi_endproc |
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.size gcm_gmult_clmul,.-gcm_gmult_clmul |
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___ |
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} |
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{ my ($Xip,$Htbl,$inp,$len)=@_4args; |
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my ($Xln,$Xmn,$Xhn,$Hkey2,$HK) = map("%xmm$_",(3..7)); |
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my ($T1,$T2,$T3)=map("%xmm$_",(8..10)); |
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$code.=<<___; |
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.globl gcm_ghash_clmul |
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.type gcm_ghash_clmul,\@abi-omnipotent |
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.align 32 |
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gcm_ghash_clmul: |
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.cfi_startproc |
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.L_ghash_clmul: |
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___ |
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$code.=<<___ if ($win64); |
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lea -0x88(%rsp),%rax |
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.LSEH_begin_gcm_ghash_clmul: |
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# I can't trust assembler to use specific encoding:-( |
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.byte 0x48,0x8d,0x60,0xe0 #lea -0x20(%rax),%rsp |
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.byte 0x0f,0x29,0x70,0xe0 #movaps %xmm6,-0x20(%rax) |
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.byte 0x0f,0x29,0x78,0xf0 #movaps %xmm7,-0x10(%rax) |
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.byte 0x44,0x0f,0x29,0x00 #movaps %xmm8,0(%rax) |
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.byte 0x44,0x0f,0x29,0x48,0x10 #movaps %xmm9,0x10(%rax) |
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.byte 0x44,0x0f,0x29,0x50,0x20 #movaps %xmm10,0x20(%rax) |
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.byte 0x44,0x0f,0x29,0x58,0x30 #movaps %xmm11,0x30(%rax) |
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.byte 0x44,0x0f,0x29,0x60,0x40 #movaps %xmm12,0x40(%rax) |
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.byte 0x44,0x0f,0x29,0x68,0x50 #movaps %xmm13,0x50(%rax) |
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.byte 0x44,0x0f,0x29,0x70,0x60 #movaps %xmm14,0x60(%rax) |
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.byte 0x44,0x0f,0x29,0x78,0x70 #movaps %xmm15,0x70(%rax) |
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___ |
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$code.=<<___; |
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movdqa .Lbswap_mask(%rip),$T3 |
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movdqu ($Xip),$Xi |
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movdqu ($Htbl),$Hkey |
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movdqu 0x20($Htbl),$HK |
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pshufb $T3,$Xi |
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sub \$0x10,$len |
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jz .Lodd_tail |
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movdqu 0x10($Htbl),$Hkey2 |
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___ |
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if ($do4xaggr) { |
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my ($Xl,$Xm,$Xh,$Hkey3,$Hkey4)=map("%xmm$_",(11..15)); |
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$code.=<<___; |
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leaq OPENSSL_ia32cap_P(%rip),%rax |
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mov 4(%rax),%eax |
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cmp \$0x30,$len |
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jb .Lskip4x |
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and \$`1<<26|1<<22`,%eax # isolate MOVBE+XSAVE |
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cmp \$`1<<22`,%eax # check for MOVBE without XSAVE |
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je .Lskip4x |
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sub \$0x30,$len |
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mov \$0xA040608020C0E000,%rax # ((7..0)·0xE0)&0xff |
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movdqu 0x30($Htbl),$Hkey3 |
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movdqu 0x40($Htbl),$Hkey4 |
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####### |
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# Xi+4 =[(H*Ii+3) + (H^2*Ii+2) + (H^3*Ii+1) + H^4*(Ii+Xi)] mod P |
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# |
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movdqu 0x30($inp),$Xln |
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movdqu 0x20($inp),$Xl |
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pshufb $T3,$Xln |
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pshufb $T3,$Xl |
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movdqa $Xln,$Xhn |
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pshufd \$0b01001110,$Xln,$Xmn |
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pxor $Xln,$Xmn |
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pclmulqdq \$0x00,$Hkey,$Xln |
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pclmulqdq \$0x11,$Hkey,$Xhn |
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pclmulqdq \$0x00,$HK,$Xmn |
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movdqa $Xl,$Xh |
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pshufd \$0b01001110,$Xl,$Xm |
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pxor $Xl,$Xm |
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pclmulqdq \$0x00,$Hkey2,$Xl |
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pclmulqdq \$0x11,$Hkey2,$Xh |
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pclmulqdq \$0x10,$HK,$Xm |
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xorps $Xl,$Xln |
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xorps $Xh,$Xhn |
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movups 0x50($Htbl),$HK |
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xorps $Xm,$Xmn |
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movdqu 0x10($inp),$Xl |
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movdqu 0($inp),$T1 |
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pshufb $T3,$Xl |
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pshufb $T3,$T1 |
|
|
movdqa $Xl,$Xh |
|
|
pshufd \$0b01001110,$Xl,$Xm |
|
|
pxor $T1,$Xi |
|
|
pxor $Xl,$Xm |
|
|
pclmulqdq \$0x00,$Hkey3,$Xl |
|
|
movdqa $Xi,$Xhi |
|
|
pshufd \$0b01001110,$Xi,$T1 |
|
|
pxor $Xi,$T1 |
|
|
pclmulqdq \$0x11,$Hkey3,$Xh |
|
|
pclmulqdq \$0x00,$HK,$Xm |
|
|
xorps $Xl,$Xln |
|
|
xorps $Xh,$Xhn |
|
|
|
|
|
lea 0x40($inp),$inp |
|
|
sub \$0x40,$len |
|
|
jc .Ltail4x |
|
|
|
|
|
jmp .Lmod4_loop |
|
|
.align 32 |
|
|
.Lmod4_loop: |
|
|
pclmulqdq \$0x00,$Hkey4,$Xi |
|
|
xorps $Xm,$Xmn |
|
|
movdqu 0x30($inp),$Xl |
|
|
pshufb $T3,$Xl |
|
|
pclmulqdq \$0x11,$Hkey4,$Xhi |
|
|
xorps $Xln,$Xi |
|
|
movdqu 0x20($inp),$Xln |
|
|
movdqa $Xl,$Xh |
|
|
pclmulqdq \$0x10,$HK,$T1 |
|
|
pshufd \$0b01001110,$Xl,$Xm |
|
|
xorps $Xhn,$Xhi |
|
|
pxor $Xl,$Xm |
|
|
pshufb $T3,$Xln |
|
|
movups 0x20($Htbl),$HK |
|
|
xorps $Xmn,$T1 |
|
|
pclmulqdq \$0x00,$Hkey,$Xl |
|
|
pshufd \$0b01001110,$Xln,$Xmn |
|
|
|
|
|
pxor $Xi,$T1 # aggregated Karatsuba post-processing |
|
|
movdqa $Xln,$Xhn |
|
|
pxor $Xhi,$T1 # |
|
|
pxor $Xln,$Xmn |
|
|
movdqa $T1,$T2 # |
|
|
pclmulqdq \$0x11,$Hkey,$Xh |
|
|
pslldq \$8,$T1 |
|
|
psrldq \$8,$T2 # |
|
|
pxor $T1,$Xi |
|
|
movdqa .L7_mask(%rip),$T1 |
|
|
pxor $T2,$Xhi # |
|
|
movq %rax,$T2 |
|
|
|
|
|
pand $Xi,$T1 # 1st phase |
|
|
pshufb $T1,$T2 # |
|
|
pxor $Xi,$T2 # |
|
|
pclmulqdq \$0x00,$HK,$Xm |
|
|
psllq \$57,$T2 # |
|
|
movdqa $T2,$T1 # |
|
|
pslldq \$8,$T2 |
|
|
pclmulqdq \$0x00,$Hkey2,$Xln |
|
|
psrldq \$8,$T1 # |
|
|
pxor $T2,$Xi |
|
|
pxor $T1,$Xhi # |
|
|
movdqu 0($inp),$T1 |
|
|
|
|
|
movdqa $Xi,$T2 # 2nd phase |
|
|
psrlq \$1,$Xi |
|
|
pclmulqdq \$0x11,$Hkey2,$Xhn |
|
|
xorps $Xl,$Xln |
|
|
movdqu 0x10($inp),$Xl |
|
|
pshufb $T3,$Xl |
|
|
pclmulqdq \$0x10,$HK,$Xmn |
|
|
xorps $Xh,$Xhn |
|
|
movups 0x50($Htbl),$HK |
|
|
pshufb $T3,$T1 |
|
|
pxor $T2,$Xhi # |
|
|
pxor $Xi,$T2 |
|
|
psrlq \$5,$Xi |
|
|
|
|
|
movdqa $Xl,$Xh |
|
|
pxor $Xm,$Xmn |
|
|
pshufd \$0b01001110,$Xl,$Xm |
|
|
pxor $T2,$Xi # |
|
|
pxor $T1,$Xhi |
|
|
pxor $Xl,$Xm |
|
|
pclmulqdq \$0x00,$Hkey3,$Xl |
|
|
psrlq \$1,$Xi # |
|
|
pxor $Xhi,$Xi # |
|
|
movdqa $Xi,$Xhi |
|
|
pclmulqdq \$0x11,$Hkey3,$Xh |
|
|
xorps $Xl,$Xln |
|
|
pshufd \$0b01001110,$Xi,$T1 |
|
|
pxor $Xi,$T1 |
|
|
|
|
|
pclmulqdq \$0x00,$HK,$Xm |
|
|
xorps $Xh,$Xhn |
|
|
|
|
|
lea 0x40($inp),$inp |
|
|
sub \$0x40,$len |
|
|
jnc .Lmod4_loop |
|
|
|
|
|
.Ltail4x: |
|
|
pclmulqdq \$0x00,$Hkey4,$Xi |
|
|
pclmulqdq \$0x11,$Hkey4,$Xhi |
|
|
pclmulqdq \$0x10,$HK,$T1 |
|
|
xorps $Xm,$Xmn |
|
|
xorps $Xln,$Xi |
|
|
xorps $Xhn,$Xhi |
|
|
pxor $Xi,$Xhi # aggregated Karatsuba post-processing |
|
|
pxor $Xmn,$T1 |
|
|
|
|
|
pxor $Xhi,$T1 # |
|
|
pxor $Xi,$Xhi |
|
|
|
|
|
movdqa $T1,$T2 # |
|
|
psrldq \$8,$T1 |
|
|
pslldq \$8,$T2 # |
|
|
pxor $T1,$Xhi |
|
|
pxor $T2,$Xi # |
|
|
___ |
|
|
&reduction_alg9($Xhi,$Xi); |
|
|
$code.=<<___; |
|
|
add \$0x40,$len |
|
|
jz .Ldone |
|
|
movdqu 0x20($Htbl),$HK |
|
|
sub \$0x10,$len |
|
|
jz .Lodd_tail |
|
|
.Lskip4x: |
|
|
___ |
|
|
} |
|
|
$code.=<<___; |
|
|
####### |
|
|
# Xi+2 =[H*(Ii+1 + Xi+1)] mod P = |
|
|
# [(H*Ii+1) + (H*Xi+1)] mod P = |
|
|
# [(H*Ii+1) + H^2*(Ii+Xi)] mod P |
|
|
# |
|
|
movdqu ($inp),$T1 # Ii |
|
|
movdqu 16($inp),$Xln # Ii+1 |
|
|
pshufb $T3,$T1 |
|
|
pshufb $T3,$Xln |
|
|
pxor $T1,$Xi # Ii+Xi |
|
|
|
|
|
movdqa $Xln,$Xhn |
|
|
pshufd \$0b01001110,$Xln,$Xmn |
|
|
pxor $Xln,$Xmn |
|
|
pclmulqdq \$0x00,$Hkey,$Xln |
|
|
pclmulqdq \$0x11,$Hkey,$Xhn |
|
|
pclmulqdq \$0x00,$HK,$Xmn |
|
|
|
|
|
lea 32($inp),$inp # i+=2 |
|
|
nop |
|
|
sub \$0x20,$len |
|
|
jbe .Leven_tail |
|
|
nop |
|
|
jmp .Lmod_loop |
|
|
|
|
|
.align 32 |
|
|
.Lmod_loop: |
|
|
movdqa $Xi,$Xhi |
|
|
movdqa $Xmn,$T1 |
|
|
pshufd \$0b01001110,$Xi,$Xmn # |
|
|
pxor $Xi,$Xmn # |
|
|
|
|
|
pclmulqdq \$0x00,$Hkey2,$Xi |
|
|
pclmulqdq \$0x11,$Hkey2,$Xhi |
|
|
pclmulqdq \$0x10,$HK,$Xmn |
|
|
|
|
|
pxor $Xln,$Xi # (H*Ii+1) + H^2*(Ii+Xi) |
|
|
pxor $Xhn,$Xhi |
|
|
movdqu ($inp),$T2 # Ii |
|
|
pxor $Xi,$T1 # aggregated Karatsuba post-processing |
|
|
pshufb $T3,$T2 |
|
|
movdqu 16($inp),$Xln # Ii+1 |
|
|
|
|
|
pxor $Xhi,$T1 |
|
|
pxor $T2,$Xhi # "Ii+Xi", consume early |
|
|
pxor $T1,$Xmn |
|
|
pshufb $T3,$Xln |
|
|
movdqa $Xmn,$T1 # |
|
|
psrldq \$8,$T1 |
|
|
pslldq \$8,$Xmn # |
|
|
pxor $T1,$Xhi |
|
|
pxor $Xmn,$Xi # |
|
|
|
|
|
movdqa $Xln,$Xhn # |
|
|
|
|
|
movdqa $Xi,$T2 # 1st phase |
|
|
movdqa $Xi,$T1 |
|
|
psllq \$5,$Xi |
|
|
pxor $Xi,$T1 # |
|
|
pclmulqdq \$0x00,$Hkey,$Xln ####### |
|
|
psllq \$1,$Xi |
|
|
pxor $T1,$Xi # |
|
|
psllq \$57,$Xi # |
|
|
movdqa $Xi,$T1 # |
|
|
pslldq \$8,$Xi |
|
|
psrldq \$8,$T1 # |
|
|
pxor $T2,$Xi |
|
|
pshufd \$0b01001110,$Xhn,$Xmn |
|
|
pxor $T1,$Xhi # |
|
|
pxor $Xhn,$Xmn # |
|
|
|
|
|
movdqa $Xi,$T2 # 2nd phase |
|
|
psrlq \$1,$Xi |
|
|
pclmulqdq \$0x11,$Hkey,$Xhn ####### |
|
|
pxor $T2,$Xhi # |
|
|
pxor $Xi,$T2 |
|
|
psrlq \$5,$Xi |
|
|
pxor $T2,$Xi # |
|
|
lea 32($inp),$inp |
|
|
psrlq \$1,$Xi # |
|
|
pclmulqdq \$0x00,$HK,$Xmn ####### |
|
|
pxor $Xhi,$Xi # |
|
|
|
|
|
sub \$0x20,$len |
|
|
ja .Lmod_loop |
|
|
|
|
|
.Leven_tail: |
|
|
movdqa $Xi,$Xhi |
|
|
movdqa $Xmn,$T1 |
|
|
pshufd \$0b01001110,$Xi,$Xmn # |
|
|
pxor $Xi,$Xmn # |
|
|
|
|
|
pclmulqdq \$0x00,$Hkey2,$Xi |
|
|
pclmulqdq \$0x11,$Hkey2,$Xhi |
|
|
pclmulqdq \$0x10,$HK,$Xmn |
|
|
|
|
|
pxor $Xln,$Xi # (H*Ii+1) + H^2*(Ii+Xi) |
|
|
pxor $Xhn,$Xhi |
|
|
pxor $Xi,$T1 |
|
|
pxor $Xhi,$T1 |
|
|
pxor $T1,$Xmn |
|
|
movdqa $Xmn,$T1 # |
|
|
psrldq \$8,$T1 |
|
|
pslldq \$8,$Xmn # |
|
|
pxor $T1,$Xhi |
|
|
pxor $Xmn,$Xi # |
|
|
___ |
|
|
&reduction_alg9 ($Xhi,$Xi); |
|
|
$code.=<<___; |
|
|
test $len,$len |
|
|
jnz .Ldone |
|
|
|
|
|
.Lodd_tail: |
|
|
movdqu ($inp),$T1 # Ii |
|
|
pshufb $T3,$T1 |
|
|
pxor $T1,$Xi # Ii+Xi |
|
|
___ |
|
|
&clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H*(Ii+Xi) |
|
|
&reduction_alg9 ($Xhi,$Xi); |
|
|
$code.=<<___; |
|
|
.Ldone: |
|
|
pshufb $T3,$Xi |
|
|
movdqu $Xi,($Xip) |
|
|
___ |
|
|
$code.=<<___ if ($win64); |
|
|
movaps (%rsp),%xmm6 |
|
|
movaps 0x10(%rsp),%xmm7 |
|
|
movaps 0x20(%rsp),%xmm8 |
|
|
movaps 0x30(%rsp),%xmm9 |
|
|
movaps 0x40(%rsp),%xmm10 |
|
|
movaps 0x50(%rsp),%xmm11 |
|
|
movaps 0x60(%rsp),%xmm12 |
|
|
movaps 0x70(%rsp),%xmm13 |
|
|
movaps 0x80(%rsp),%xmm14 |
|
|
movaps 0x90(%rsp),%xmm15 |
|
|
lea 0xa8(%rsp),%rsp |
|
|
.LSEH_end_gcm_ghash_clmul: |
|
|
___ |
|
|
$code.=<<___; |
|
|
ret |
|
|
.cfi_endproc |
|
|
.size gcm_ghash_clmul,.-gcm_ghash_clmul |
|
|
___ |
|
|
} |
|
|
|
|
|
$code.=<<___; |
|
|
.globl gcm_init_avx |
|
|
.type gcm_init_avx,\@abi-omnipotent |
|
|
.align 32 |
|
|
gcm_init_avx: |
|
|
.cfi_startproc |
|
|
___ |
|
|
if ($avx) { |
|
|
my ($Htbl,$Xip)=@_4args; |
|
|
my $HK="%xmm6"; |
|
|
|
|
|
$code.=<<___ if ($win64); |
|
|
.LSEH_begin_gcm_init_avx: |
|
|
# I can't trust assembler to use specific encoding:-( |
|
|
.byte 0x48,0x83,0xec,0x18 #sub $0x18,%rsp |
|
|
.byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp) |
|
|
___ |
|
|
$code.=<<___; |
|
|
vzeroupper |
|
|
|
|
|
vmovdqu ($Xip),$Hkey |
|
|
vpshufd \$0b01001110,$Hkey,$Hkey # dword swap |
|
|
|
|
|
# <<1 twist |
|
|
vpshufd \$0b11111111,$Hkey,$T2 # broadcast uppermost dword |
|
|
vpsrlq \$63,$Hkey,$T1 |
|
|
vpsllq \$1,$Hkey,$Hkey |
|
|
vpxor $T3,$T3,$T3 # |
|
|
vpcmpgtd $T2,$T3,$T3 # broadcast carry bit |
|
|
vpslldq \$8,$T1,$T1 |
|
|
vpor $T1,$Hkey,$Hkey # H<<=1 |
|
|
|
|
|
# magic reduction |
|
|
vpand .L0x1c2_polynomial(%rip),$T3,$T3 |
|
|
vpxor $T3,$Hkey,$Hkey # if(carry) H^=0x1c2_polynomial |
|
|
|
|
|
vpunpckhqdq $Hkey,$Hkey,$HK |
|
|
vmovdqa $Hkey,$Xi |
|
|
vpxor $Hkey,$HK,$HK |
|
|
mov \$4,%r10 # up to H^8 |
|
|
jmp .Linit_start_avx |
|
|
___ |
|
|
|
|
|
sub clmul64x64_avx { |
|
|
my ($Xhi,$Xi,$Hkey,$HK)=@_; |
|
|
|
|
|
if (!defined($HK)) { $HK = $T2; |
|
|
$code.=<<___; |
|
|
vpunpckhqdq $Xi,$Xi,$T1 |
|
|
vpunpckhqdq $Hkey,$Hkey,$T2 |
|
|
vpxor $Xi,$T1,$T1 # |
|
|
vpxor $Hkey,$T2,$T2 |
|
|
___ |
|
|
} else { |
|
|
$code.=<<___; |
|
|
vpunpckhqdq $Xi,$Xi,$T1 |
|
|
vpxor $Xi,$T1,$T1 # |
|
|
___ |
|
|
} |
|
|
$code.=<<___; |
|
|
vpclmulqdq \$0x11,$Hkey,$Xi,$Xhi ####### |
|
|
vpclmulqdq \$0x00,$Hkey,$Xi,$Xi ####### |
|
|
vpclmulqdq \$0x00,$HK,$T1,$T1 ####### |
|
|
vpxor $Xi,$Xhi,$T2 # |
|
|
vpxor $T2,$T1,$T1 # |
|
|
|
|
|
vpslldq \$8,$T1,$T2 # |
|
|
vpsrldq \$8,$T1,$T1 |
|
|
vpxor $T2,$Xi,$Xi # |
|
|
vpxor $T1,$Xhi,$Xhi |
|
|
___ |
|
|
} |
|
|
|
|
|
sub reduction_avx { |
|
|
my ($Xhi,$Xi) = @_; |
|
|
|
|
|
$code.=<<___; |
|
|
vpsllq \$57,$Xi,$T1 # 1st phase |
|
|
vpsllq \$62,$Xi,$T2 |
|
|
vpxor $T1,$T2,$T2 # |
|
|
vpsllq \$63,$Xi,$T1 |
|
|
vpxor $T1,$T2,$T2 # |
|
|
vpslldq \$8,$T2,$T1 # |
|
|
vpsrldq \$8,$T2,$T2 |
|
|
vpxor $T1,$Xi,$Xi # |
|
|
vpxor $T2,$Xhi,$Xhi |
|
|
|
|
|
vpsrlq \$1,$Xi,$T2 # 2nd phase |
|
|
vpxor $Xi,$Xhi,$Xhi |
|
|
vpxor $T2,$Xi,$Xi # |
|
|
vpsrlq \$5,$T2,$T2 |
|
|
vpxor $T2,$Xi,$Xi # |
|
|
vpsrlq \$1,$Xi,$Xi # |
|
|
vpxor $Xhi,$Xi,$Xi # |
|
|
___ |
|
|
} |
|
|
|
|
|
$code.=<<___; |
|
|
.align 32 |
|
|
.Linit_loop_avx: |
|
|
vpalignr \$8,$T1,$T2,$T3 # low part is H.lo^H.hi... |
|
|
vmovdqu $T3,-0x10($Htbl) # save Karatsuba "salt" |
|
|
___ |
|
|
&clmul64x64_avx ($Xhi,$Xi,$Hkey,$HK); # calculate H^3,5,7 |
|
|
&reduction_avx ($Xhi,$Xi); |
|
|
$code.=<<___; |
|
|
.Linit_start_avx: |
|
|
vmovdqa $Xi,$T3 |
|
|
___ |
|
|
&clmul64x64_avx ($Xhi,$Xi,$Hkey,$HK); # calculate H^2,4,6,8 |
|
|
&reduction_avx ($Xhi,$Xi); |
|
|
$code.=<<___; |
|
|
vpshufd \$0b01001110,$T3,$T1 |
|
|
vpshufd \$0b01001110,$Xi,$T2 |
|
|
vpxor $T3,$T1,$T1 # Karatsuba pre-processing |
|
|
vmovdqu $T3,0x00($Htbl) # save H^1,3,5,7 |
|
|
vpxor $Xi,$T2,$T2 # Karatsuba pre-processing |
|
|
vmovdqu $Xi,0x10($Htbl) # save H^2,4,6,8 |
|
|
lea 0x30($Htbl),$Htbl |
|
|
sub \$1,%r10 |
|
|
jnz .Linit_loop_avx |
|
|
|
|
|
vpalignr \$8,$T2,$T1,$T3 # last "salt" is flipped |
|
|
vmovdqu $T3,-0x10($Htbl) |
|
|
|
|
|
vzeroupper |
|
|
___ |
|
|
$code.=<<___ if ($win64); |
|
|
movaps (%rsp),%xmm6 |
|
|
lea 0x18(%rsp),%rsp |
|
|
.LSEH_end_gcm_init_avx: |
|
|
___ |
|
|
$code.=<<___; |
|
|
ret |
|
|
.cfi_endproc |
|
|
.size gcm_init_avx,.-gcm_init_avx |
|
|
___ |
|
|
} else { |
|
|
$code.=<<___; |
|
|
jmp .L_init_clmul |
|
|
.size gcm_init_avx,.-gcm_init_avx |
|
|
___ |
|
|
} |
|
|
|
|
|
$code.=<<___; |
|
|
.globl gcm_gmult_avx |
|
|
.type gcm_gmult_avx,\@abi-omnipotent |
|
|
.align 32 |
|
|
gcm_gmult_avx: |
|
|
.cfi_startproc |
|
|
jmp .L_gmult_clmul |
|
|
.cfi_endproc |
|
|
.size gcm_gmult_avx,.-gcm_gmult_avx |
|
|
___ |
|
|
|
|
|
$code.=<<___; |
|
|
.globl gcm_ghash_avx |
|
|
.type gcm_ghash_avx,\@abi-omnipotent |
|
|
.align 32 |
|
|
gcm_ghash_avx: |
|
|
.cfi_startproc |
|
|
___ |
|
|
if ($avx) { |
|
|
my ($Xip,$Htbl,$inp,$len)=@_4args; |
|
|
my ($Xlo,$Xhi,$Xmi, |
|
|
$Zlo,$Zhi,$Zmi, |
|
|
$Hkey,$HK,$T1,$T2, |
|
|
$Xi,$Xo,$Tred,$bswap,$Ii,$Ij) = map("%xmm$_",(0..15)); |
|
|
|
|
|
$code.=<<___ if ($win64); |
|
|
lea -0x88(%rsp),%rax |
|
|
.LSEH_begin_gcm_ghash_avx: |
|
|
# I can't trust assembler to use specific encoding:-( |
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.byte 0x48,0x8d,0x60,0xe0 #lea -0x20(%rax),%rsp |
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.byte 0x0f,0x29,0x70,0xe0 #movaps %xmm6,-0x20(%rax) |
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.byte 0x0f,0x29,0x78,0xf0 #movaps %xmm7,-0x10(%rax) |
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.byte 0x44,0x0f,0x29,0x00 #movaps %xmm8,0(%rax) |
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.byte 0x44,0x0f,0x29,0x48,0x10 #movaps %xmm9,0x10(%rax) |
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.byte 0x44,0x0f,0x29,0x50,0x20 #movaps %xmm10,0x20(%rax) |
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.byte 0x44,0x0f,0x29,0x58,0x30 #movaps %xmm11,0x30(%rax) |
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.byte 0x44,0x0f,0x29,0x60,0x40 #movaps %xmm12,0x40(%rax) |
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.byte 0x44,0x0f,0x29,0x68,0x50 #movaps %xmm13,0x50(%rax) |
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.byte 0x44,0x0f,0x29,0x70,0x60 #movaps %xmm14,0x60(%rax) |
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.byte 0x44,0x0f,0x29,0x78,0x70 #movaps %xmm15,0x70(%rax) |
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___ |
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$code.=<<___; |
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vzeroupper |
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vmovdqu ($Xip),$Xi # load $Xi |
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lea .L0x1c2_polynomial(%rip),%r10 |
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lea 0x40($Htbl),$Htbl # size optimization |
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vmovdqu .Lbswap_mask(%rip),$bswap |
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vpshufb $bswap,$Xi,$Xi |
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cmp \$0x80,$len |
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jb .Lshort_avx |
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sub \$0x80,$len |
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vmovdqu 0x70($inp),$Ii # I[7] |
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vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1 |
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vpshufb $bswap,$Ii,$Ii |
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vmovdqu 0x20-0x40($Htbl),$HK |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vmovdqu 0x60($inp),$Ij # I[6] |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpxor $Ii,$T2,$T2 |
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vpshufb $bswap,$Ij,$Ij |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2 |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vmovdqu 0x50($inp),$Ii # I[5] |
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vpclmulqdq \$0x00,$HK,$T2,$Xmi |
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vpxor $Ij,$T1,$T1 |
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vpshufb $bswap,$Ii,$Ii |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
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vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3 |
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vpxor $Ii,$T2,$T2 |
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vmovdqu 0x40($inp),$Ij # I[4] |
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vpclmulqdq \$0x10,$HK,$T1,$Zmi |
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vmovdqu 0x50-0x40($Htbl),$HK |
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vpshufb $bswap,$Ij,$Ij |
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpxor $Xhi,$Zhi,$Zhi |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4 |
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vpxor $Xmi,$Zmi,$Zmi |
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vpclmulqdq \$0x00,$HK,$T2,$Xmi |
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vpxor $Ij,$T1,$T1 |
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vmovdqu 0x30($inp),$Ii # I[3] |
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vpxor $Zlo,$Xlo,$Xlo |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
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vpxor $Zhi,$Xhi,$Xhi |
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vpshufb $bswap,$Ii,$Ii |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
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vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5 |
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vpxor $Zmi,$Xmi,$Xmi |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpclmulqdq \$0x10,$HK,$T1,$Zmi |
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vmovdqu 0x80-0x40($Htbl),$HK |
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vpxor $Ii,$T2,$T2 |
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vmovdqu 0x20($inp),$Ij # I[2] |
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpxor $Xhi,$Zhi,$Zhi |
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vpshufb $bswap,$Ij,$Ij |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6 |
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vpxor $Xmi,$Zmi,$Zmi |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vpclmulqdq \$0x00,$HK,$T2,$Xmi |
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vpxor $Ij,$T1,$T1 |
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vmovdqu 0x10($inp),$Ii # I[1] |
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vpxor $Zlo,$Xlo,$Xlo |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
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vpxor $Zhi,$Xhi,$Xhi |
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vpshufb $bswap,$Ii,$Ii |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
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vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7 |
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vpxor $Zmi,$Xmi,$Xmi |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpclmulqdq \$0x10,$HK,$T1,$Zmi |
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vmovdqu 0xb0-0x40($Htbl),$HK |
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vpxor $Ii,$T2,$T2 |
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vmovdqu ($inp),$Ij # I[0] |
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpxor $Xhi,$Zhi,$Zhi |
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vpshufb $bswap,$Ij,$Ij |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0xa0-0x40($Htbl),$Hkey # $Hkey^8 |
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vpxor $Xmi,$Zmi,$Zmi |
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vpclmulqdq \$0x10,$HK,$T2,$Xmi |
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lea 0x80($inp),$inp |
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cmp \$0x80,$len |
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jb .Ltail_avx |
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vpxor $Xi,$Ij,$Ij # accumulate $Xi |
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sub \$0x80,$len |
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jmp .Loop8x_avx |
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.align 32 |
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.Loop8x_avx: |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vmovdqu 0x70($inp),$Ii # I[7] |
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vpxor $Xlo,$Zlo,$Zlo |
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vpxor $Ij,$T1,$T1 |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Xi |
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vpshufb $bswap,$Ii,$Ii |
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vpxor $Xhi,$Zhi,$Zhi |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Xo |
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vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1 |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpxor $Xmi,$Zmi,$Zmi |
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vpclmulqdq \$0x00,$HK,$T1,$Tred |
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vmovdqu 0x20-0x40($Htbl),$HK |
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vpxor $Ii,$T2,$T2 |
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vmovdqu 0x60($inp),$Ij # I[6] |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpxor $Zlo,$Xi,$Xi # collect result |
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vpshufb $bswap,$Ij,$Ij |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vxorps $Zhi,$Xo,$Xo |
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vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2 |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vpclmulqdq \$0x00,$HK, $T2,$Xmi |
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vpxor $Zmi,$Tred,$Tred |
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vxorps $Ij,$T1,$T1 |
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vmovdqu 0x50($inp),$Ii # I[5] |
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vpxor $Xi,$Tred,$Tred # aggregated Karatsuba post-processing |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
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vpxor $Xo,$Tred,$Tred |
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vpslldq \$8,$Tred,$T2 |
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
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vpsrldq \$8,$Tred,$Tred |
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vpxor $T2, $Xi, $Xi |
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vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3 |
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vpshufb $bswap,$Ii,$Ii |
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vxorps $Tred,$Xo, $Xo |
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vpxor $Xhi,$Zhi,$Zhi |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpclmulqdq \$0x10,$HK, $T1,$Zmi |
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vmovdqu 0x50-0x40($Htbl),$HK |
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vpxor $Ii,$T2,$T2 |
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vpxor $Xmi,$Zmi,$Zmi |
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vmovdqu 0x40($inp),$Ij # I[4] |
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vpalignr \$8,$Xi,$Xi,$Tred # 1st phase |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpshufb $bswap,$Ij,$Ij |
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vpxor $Zlo,$Xlo,$Xlo |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4 |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vpxor $Zhi,$Xhi,$Xhi |
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vpclmulqdq \$0x00,$HK, $T2,$Xmi |
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vxorps $Ij,$T1,$T1 |
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vpxor $Zmi,$Xmi,$Xmi |
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vmovdqu 0x30($inp),$Ii # I[3] |
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vpclmulqdq \$0x10,(%r10),$Xi,$Xi |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
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vpshufb $bswap,$Ii,$Ii |
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
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vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5 |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpxor $Xhi,$Zhi,$Zhi |
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vpclmulqdq \$0x10,$HK, $T1,$Zmi |
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vmovdqu 0x80-0x40($Htbl),$HK |
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vpxor $Ii,$T2,$T2 |
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vpxor $Xmi,$Zmi,$Zmi |
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vmovdqu 0x20($inp),$Ij # I[2] |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpshufb $bswap,$Ij,$Ij |
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vpxor $Zlo,$Xlo,$Xlo |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6 |
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vpunpckhqdq $Ij,$Ij,$T1 |
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vpxor $Zhi,$Xhi,$Xhi |
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vpclmulqdq \$0x00,$HK, $T2,$Xmi |
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vpxor $Ij,$T1,$T1 |
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vpxor $Zmi,$Xmi,$Xmi |
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vxorps $Tred,$Xi,$Xi |
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vmovdqu 0x10($inp),$Ii # I[1] |
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vpalignr \$8,$Xi,$Xi,$Tred # 2nd phase |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
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vpshufb $bswap,$Ii,$Ii |
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
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vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7 |
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vpclmulqdq \$0x10,(%r10),$Xi,$Xi |
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vxorps $Xo,$Tred,$Tred |
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vpunpckhqdq $Ii,$Ii,$T2 |
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vpxor $Xhi,$Zhi,$Zhi |
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vpclmulqdq \$0x10,$HK, $T1,$Zmi |
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vmovdqu 0xb0-0x40($Htbl),$HK |
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vpxor $Ii,$T2,$T2 |
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vpxor $Xmi,$Zmi,$Zmi |
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|
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vmovdqu ($inp),$Ij # I[0] |
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vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
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vpshufb $bswap,$Ij,$Ij |
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vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
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vmovdqu 0xa0-0x40($Htbl),$Hkey # $Hkey^8 |
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vpxor $Tred,$Ij,$Ij |
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vpclmulqdq \$0x10,$HK, $T2,$Xmi |
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vpxor $Xi,$Ij,$Ij # accumulate $Xi |
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lea 0x80($inp),$inp |
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sub \$0x80,$len |
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jnc .Loop8x_avx |
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add \$0x80,$len |
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jmp .Ltail_no_xor_avx |
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.align 32 |
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.Lshort_avx: |
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vmovdqu -0x10($inp,$len),$Ii # very last word |
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lea ($inp,$len),$inp |
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vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1 |
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vmovdqu 0x20-0x40($Htbl),$HK |
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vpshufb $bswap,$Ii,$Ij |
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vmovdqa $Xlo,$Zlo # subtle way to zero $Zlo, |
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vmovdqa $Xhi,$Zhi # $Zhi and |
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vmovdqa $Xmi,$Zmi # $Zmi |
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sub \$0x10,$len |
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jz .Ltail_avx |
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|
|
|
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vpunpckhqdq $Ij,$Ij,$T1 |
|
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
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vpxor $Ij,$T1,$T1 |
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vmovdqu -0x20($inp),$Ii |
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vpxor $Xhi,$Zhi,$Zhi |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
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vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2 |
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|
vpshufb $bswap,$Ii,$Ij |
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vpxor $Xmi,$Zmi,$Zmi |
|
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vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
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vpsrldq \$8,$HK,$HK |
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sub \$0x10,$len |
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jz .Ltail_avx |
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|
|
|
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vpunpckhqdq $Ij,$Ij,$T1 |
|
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vpxor $Xlo,$Zlo,$Zlo |
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vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
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vpxor $Ij,$T1,$T1 |
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vmovdqu -0x30($inp),$Ii |
|
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vpxor $Xhi,$Zhi,$Zhi |
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vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
|
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vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3 |
|
|
vpshufb $bswap,$Ii,$Ij |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
|
vmovdqu 0x50-0x40($Htbl),$HK |
|
|
sub \$0x10,$len |
|
|
jz .Ltail_avx |
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|
|
|
|
vpunpckhqdq $Ij,$Ij,$T1 |
|
|
vpxor $Xlo,$Zlo,$Zlo |
|
|
vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
|
vpxor $Ij,$T1,$T1 |
|
|
vmovdqu -0x40($inp),$Ii |
|
|
vpxor $Xhi,$Zhi,$Zhi |
|
|
vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
|
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vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4 |
|
|
vpshufb $bswap,$Ii,$Ij |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
|
vpsrldq \$8,$HK,$HK |
|
|
sub \$0x10,$len |
|
|
jz .Ltail_avx |
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|
|
|
|
vpunpckhqdq $Ij,$Ij,$T1 |
|
|
vpxor $Xlo,$Zlo,$Zlo |
|
|
vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
|
vpxor $Ij,$T1,$T1 |
|
|
vmovdqu -0x50($inp),$Ii |
|
|
vpxor $Xhi,$Zhi,$Zhi |
|
|
vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
|
|
vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5 |
|
|
vpshufb $bswap,$Ii,$Ij |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
|
vmovdqu 0x80-0x40($Htbl),$HK |
|
|
sub \$0x10,$len |
|
|
jz .Ltail_avx |
|
|
|
|
|
vpunpckhqdq $Ij,$Ij,$T1 |
|
|
vpxor $Xlo,$Zlo,$Zlo |
|
|
vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
|
vpxor $Ij,$T1,$T1 |
|
|
vmovdqu -0x60($inp),$Ii |
|
|
vpxor $Xhi,$Zhi,$Zhi |
|
|
vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
|
|
vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6 |
|
|
vpshufb $bswap,$Ii,$Ij |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
|
vpsrldq \$8,$HK,$HK |
|
|
sub \$0x10,$len |
|
|
jz .Ltail_avx |
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|
|
|
|
vpunpckhqdq $Ij,$Ij,$T1 |
|
|
vpxor $Xlo,$Zlo,$Zlo |
|
|
vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
|
vpxor $Ij,$T1,$T1 |
|
|
vmovdqu -0x70($inp),$Ii |
|
|
vpxor $Xhi,$Zhi,$Zhi |
|
|
vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
|
|
vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7 |
|
|
vpshufb $bswap,$Ii,$Ij |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
|
vmovq 0xb8-0x40($Htbl),$HK |
|
|
sub \$0x10,$len |
|
|
jmp .Ltail_avx |
|
|
|
|
|
.align 32 |
|
|
.Ltail_avx: |
|
|
vpxor $Xi,$Ij,$Ij # accumulate $Xi |
|
|
.Ltail_no_xor_avx: |
|
|
vpunpckhqdq $Ij,$Ij,$T1 |
|
|
vpxor $Xlo,$Zlo,$Zlo |
|
|
vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
|
|
vpxor $Ij,$T1,$T1 |
|
|
vpxor $Xhi,$Zhi,$Zhi |
|
|
vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
vpclmulqdq \$0x00,$HK,$T1,$Xmi |
|
|
|
|
|
vmovdqu (%r10),$Tred |
|
|
|
|
|
vpxor $Xlo,$Zlo,$Xi |
|
|
vpxor $Xhi,$Zhi,$Xo |
|
|
vpxor $Xmi,$Zmi,$Zmi |
|
|
|
|
|
vpxor $Xi, $Zmi,$Zmi # aggregated Karatsuba post-processing |
|
|
vpxor $Xo, $Zmi,$Zmi |
|
|
vpslldq \$8, $Zmi,$T2 |
|
|
vpsrldq \$8, $Zmi,$Zmi |
|
|
vpxor $T2, $Xi, $Xi |
|
|
vpxor $Zmi,$Xo, $Xo |
|
|
|
|
|
vpclmulqdq \$0x10,$Tred,$Xi,$T2 # 1st phase |
|
|
vpalignr \$8,$Xi,$Xi,$Xi |
|
|
vpxor $T2,$Xi,$Xi |
|
|
|
|
|
vpclmulqdq \$0x10,$Tred,$Xi,$T2 # 2nd phase |
|
|
vpalignr \$8,$Xi,$Xi,$Xi |
|
|
vpxor $Xo,$Xi,$Xi |
|
|
vpxor $T2,$Xi,$Xi |
|
|
|
|
|
cmp \$0,$len |
|
|
jne .Lshort_avx |
|
|
|
|
|
vpshufb $bswap,$Xi,$Xi |
|
|
vmovdqu $Xi,($Xip) |
|
|
vzeroupper |
|
|
___ |
|
|
$code.=<<___ if ($win64); |
|
|
movaps (%rsp),%xmm6 |
|
|
movaps 0x10(%rsp),%xmm7 |
|
|
movaps 0x20(%rsp),%xmm8 |
|
|
movaps 0x30(%rsp),%xmm9 |
|
|
movaps 0x40(%rsp),%xmm10 |
|
|
movaps 0x50(%rsp),%xmm11 |
|
|
movaps 0x60(%rsp),%xmm12 |
|
|
movaps 0x70(%rsp),%xmm13 |
|
|
movaps 0x80(%rsp),%xmm14 |
|
|
movaps 0x90(%rsp),%xmm15 |
|
|
lea 0xa8(%rsp),%rsp |
|
|
.LSEH_end_gcm_ghash_avx: |
|
|
___ |
|
|
$code.=<<___; |
|
|
ret |
|
|
.cfi_endproc |
|
|
.size gcm_ghash_avx,.-gcm_ghash_avx |
|
|
___ |
|
|
} else { |
|
|
$code.=<<___; |
|
|
jmp .L_ghash_clmul |
|
|
.size gcm_ghash_avx,.-gcm_ghash_avx |
|
|
___ |
|
|
} |
|
|
|
|
|
$code.=<<___; |
|
|
.align 64 |
|
|
.Lbswap_mask: |
|
|
.byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 |
|
|
.L0x1c2_polynomial: |
|
|
.byte 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2 |
|
|
.L7_mask: |
|
|
.long 7,0,7,0 |
|
|
.align 64 |
|
|
|
|
|
.asciz "GHASH for x86_64, CRYPTOGAMS by <appro\@openssl.org>" |
|
|
.align 64 |
|
|
___ |
|
|
|
|
|
if ($win64) { |
|
|
$code.=<<___; |
|
|
.section .pdata |
|
|
.align 4 |
|
|
.rva .LSEH_begin_gcm_init_clmul |
|
|
.rva .LSEH_end_gcm_init_clmul |
|
|
.rva .LSEH_info_gcm_init_clmul |
|
|
|
|
|
.rva .LSEH_begin_gcm_ghash_clmul |
|
|
.rva .LSEH_end_gcm_ghash_clmul |
|
|
.rva .LSEH_info_gcm_ghash_clmul |
|
|
___ |
|
|
$code.=<<___ if ($avx); |
|
|
.rva .LSEH_begin_gcm_init_avx |
|
|
.rva .LSEH_end_gcm_init_avx |
|
|
.rva .LSEH_info_gcm_init_clmul |
|
|
|
|
|
.rva .LSEH_begin_gcm_ghash_avx |
|
|
.rva .LSEH_end_gcm_ghash_avx |
|
|
.rva .LSEH_info_gcm_ghash_clmul |
|
|
___ |
|
|
$code.=<<___; |
|
|
.section .xdata |
|
|
.align 8 |
|
|
.LSEH_info_gcm_init_clmul: |
|
|
.byte 0x01,0x08,0x03,0x00 |
|
|
.byte 0x08,0x68,0x00,0x00 #movaps 0x00(rsp),xmm6 |
|
|
.byte 0x04,0x22,0x00,0x00 #sub rsp,0x18 |
|
|
.LSEH_info_gcm_ghash_clmul: |
|
|
.byte 0x01,0x33,0x16,0x00 |
|
|
.byte 0x33,0xf8,0x09,0x00 #movaps 0x90(rsp),xmm15 |
|
|
.byte 0x2e,0xe8,0x08,0x00 #movaps 0x80(rsp),xmm14 |
|
|
.byte 0x29,0xd8,0x07,0x00 #movaps 0x70(rsp),xmm13 |
|
|
.byte 0x24,0xc8,0x06,0x00 #movaps 0x60(rsp),xmm12 |
|
|
.byte 0x1f,0xb8,0x05,0x00 #movaps 0x50(rsp),xmm11 |
|
|
.byte 0x1a,0xa8,0x04,0x00 #movaps 0x40(rsp),xmm10 |
|
|
.byte 0x15,0x98,0x03,0x00 #movaps 0x30(rsp),xmm9 |
|
|
.byte 0x10,0x88,0x02,0x00 #movaps 0x20(rsp),xmm8 |
|
|
.byte 0x0c,0x78,0x01,0x00 #movaps 0x10(rsp),xmm7 |
|
|
.byte 0x08,0x68,0x00,0x00 #movaps 0x00(rsp),xmm6 |
|
|
.byte 0x04,0x01,0x15,0x00 #sub rsp,0xa8 |
|
|
___ |
|
|
} |
|
|
|
|
|
$code =~ s/\`([^\`]*)\`/eval($1)/gem; |
|
|
|
|
|
print $code; |
|
|
|
|
|
close STDOUT or die "error closing STDOUT: $!";
|
|
|
|
