| #! /usr/bin/env perl |
| # Copyright 2010-2016 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 <appro@openssl.org> 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/. |
| # ==================================================================== |
| # |
| # March, June 2010 |
| # |
| # The module implements "4-bit" GCM GHASH function and underlying |
| # single multiplication operation in GF(2^128). "4-bit" means that |
| # it uses 256 bytes per-key table [+128 bytes shared table]. GHASH |
| # function features so called "528B" variant utilizing additional |
| # 256+16 bytes of per-key storage [+512 bytes shared table]. |
| # Performance results are for this streamed GHASH subroutine and are |
| # expressed in cycles per processed byte, less is better: |
| # |
| # gcc 3.4.x(*) assembler |
| # |
| # P4 28.6 14.0 +100% |
| # Opteron 19.3 7.7 +150% |
| # Core2 17.8 8.1(**) +120% |
| # Atom 31.6 16.8 +88% |
| # VIA Nano 21.8 10.1 +115% |
| # |
| # (*) comparison is not completely fair, because C results are |
| # for vanilla "256B" implementation, while assembler results |
| # are for "528B";-) |
| # (**) it's mystery [to me] why Core2 result is not same as for |
| # Opteron; |
| |
| # May 2010 |
| # |
| # Add PCLMULQDQ version performing at 2.02 cycles per processed byte. |
| # See ghash-x86.pl for background information and details about coding |
| # techniques. |
| # |
| # Special thanks to David Woodhouse for providing access to a |
| # Westmere-based system on behalf of Intel Open Source Technology Centre. |
| |
| # December 2012 |
| # |
| # Overhaul: aggregate Karatsuba post-processing, improve ILP in |
| # reduction_alg9, increase reduction aggregate factor to 4x. As for |
| # the latter. ghash-x86.pl discusses that it makes lesser sense to |
| # increase aggregate factor. Then why increase here? Critical path |
| # consists of 3 independent pclmulqdq instructions, Karatsuba post- |
| # processing and reduction. "On top" of this we lay down aggregated |
| # multiplication operations, triplets of independent pclmulqdq's. As |
| # issue rate for pclmulqdq is limited, it makes lesser sense to |
| # aggregate more multiplications than it takes to perform remaining |
| # non-multiplication operations. 2x is near-optimal coefficient for |
| # contemporary Intel CPUs (therefore modest improvement coefficient), |
| # but not for Bulldozer. Latter is because logical SIMD operations |
| # are twice as slow in comparison to Intel, so that critical path is |
| # longer. A CPU with higher pclmulqdq issue rate would also benefit |
| # from higher aggregate factor... |
| # |
| # Westmere 1.78(+13%) |
| # Sandy Bridge 1.80(+8%) |
| # Ivy Bridge 1.80(+7%) |
| # Haswell 0.55(+93%) (if system doesn't support AVX) |
| # Broadwell 0.45(+110%)(if system doesn't support AVX) |
| # Skylake 0.44(+110%)(if system doesn't support AVX) |
| # Bulldozer 1.49(+27%) |
| # Silvermont 2.88(+13%) |
| # Knights L 2.12(-) (if system doesn't support AVX) |
| # Goldmont 1.08(+24%) |
| |
| # March 2013 |
| # |
| # ... 8x aggregate factor AVX code path is using reduction algorithm |
| # suggested by Shay Gueron[1]. Even though contemporary AVX-capable |
| # CPUs such as Sandy and Ivy Bridge can execute it, the code performs |
| # sub-optimally in comparison to above mentioned version. But thanks |
| # to Ilya Albrekht and Max Locktyukhin of Intel Corp. we knew that |
| # it performs in 0.41 cycles per byte on Haswell processor, in |
| # 0.29 on Broadwell, and in 0.36 on Skylake. |
| # |
| # Knights Landing achieves 1.09 cpb. |
| # |
| # [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest |
| |
| # This file was patched in BoringSSL to remove the variable-time 4-bit |
| # implementation. |
| |
| $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 $xlate) or |
| die "can't locate x86_64-xlate.pl"; |
| |
| # See the notes about |$avx| in aesni-gcm-x86_64.pl; 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. |
| $avx = 1; |
| |
| open OUT,"| \"$^X\" \"$xlate\" $flavour \"$output\""; |
| *STDOUT=*OUT; |
| |
| $do4xaggr=1; |
| |
| |
| $code=<<___; |
| .text |
| .extern OPENSSL_ia32cap_P |
| ___ |
| |
| |
| ###################################################################### |
| # PCLMULQDQ version. |
| |
| @_4args=$win64? ("%rcx","%rdx","%r8", "%r9") : # Win64 order |
| ("%rdi","%rsi","%rdx","%rcx"); # Unix order |
| |
| ($Xi,$Xhi)=("%xmm0","%xmm1"); $Hkey="%xmm2"; |
| ($T1,$T2,$T3)=("%xmm3","%xmm4","%xmm5"); |
| |
| sub clmul64x64_T2 { # minimal register pressure |
| my ($Xhi,$Xi,$Hkey,$HK)=@_; |
| |
| if (!defined($HK)) { $HK = $T2; |
| $code.=<<___; |
| movdqa $Xi,$Xhi # |
| pshufd \$0b01001110,$Xi,$T1 |
| pshufd \$0b01001110,$Hkey,$T2 |
| pxor $Xi,$T1 # |
| pxor $Hkey,$T2 |
| ___ |
| } else { |
| $code.=<<___; |
| movdqa $Xi,$Xhi # |
| pshufd \$0b01001110,$Xi,$T1 |
| pxor $Xi,$T1 # |
| ___ |
| } |
| $code.=<<___; |
| pclmulqdq \$0x00,$Hkey,$Xi ####### |
| pclmulqdq \$0x11,$Hkey,$Xhi ####### |
| pclmulqdq \$0x00,$HK,$T1 ####### |
| pxor $Xi,$T1 # |
| pxor $Xhi,$T1 # |
| |
| movdqa $T1,$T2 # |
| psrldq \$8,$T1 |
| pslldq \$8,$T2 # |
| pxor $T1,$Xhi |
| pxor $T2,$Xi # |
| ___ |
| } |
| |
| sub reduction_alg9 { # 17/11 times faster than Intel version |
| my ($Xhi,$Xi) = @_; |
| |
| $code.=<<___; |
| # 1st phase |
| movdqa $Xi,$T2 # |
| movdqa $Xi,$T1 |
| psllq \$5,$Xi |
| pxor $Xi,$T1 # |
| psllq \$1,$Xi |
| pxor $T1,$Xi # |
| psllq \$57,$Xi # |
| movdqa $Xi,$T1 # |
| pslldq \$8,$Xi |
| psrldq \$8,$T1 # |
| pxor $T2,$Xi |
| pxor $T1,$Xhi # |
| |
| # 2nd phase |
| movdqa $Xi,$T2 |
| psrlq \$1,$Xi |
| pxor $T2,$Xhi # |
| pxor $Xi,$T2 |
| psrlq \$5,$Xi |
| pxor $T2,$Xi # |
| psrlq \$1,$Xi # |
| pxor $Xhi,$Xi # |
| ___ |
| } |
| |
| { my ($Htbl,$Xip)=@_4args; |
| my $HK="%xmm6"; |
| |
| $code.=<<___; |
| .globl gcm_init_clmul |
| .type gcm_init_clmul,\@abi-omnipotent |
| .align 16 |
| gcm_init_clmul: |
| .cfi_startproc |
| .L_init_clmul: |
| ___ |
| $code.=<<___ if ($win64); |
| .LSEH_begin_gcm_init_clmul: |
| # 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) |
| ___ |
| $code.=<<___; |
| movdqu ($Xip),$Hkey |
| pshufd \$0b01001110,$Hkey,$Hkey # dword swap |
| |
| # <<1 twist |
| pshufd \$0b11111111,$Hkey,$T2 # broadcast uppermost dword |
| movdqa $Hkey,$T1 |
| psllq \$1,$Hkey |
| pxor $T3,$T3 # |
| psrlq \$63,$T1 |
| pcmpgtd $T2,$T3 # broadcast carry bit |
| pslldq \$8,$T1 |
| por $T1,$Hkey # H<<=1 |
| |
| # magic reduction |
| pand .L0x1c2_polynomial(%rip),$T3 |
| pxor $T3,$Hkey # if(carry) H^=0x1c2_polynomial |
| |
| # calculate H^2 |
| pshufd \$0b01001110,$Hkey,$HK |
| movdqa $Hkey,$Xi |
| pxor $Hkey,$HK |
| ___ |
| &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); |
| &reduction_alg9 ($Xhi,$Xi); |
| $code.=<<___; |
| pshufd \$0b01001110,$Hkey,$T1 |
| pshufd \$0b01001110,$Xi,$T2 |
| pxor $Hkey,$T1 # Karatsuba pre-processing |
| movdqu $Hkey,0x00($Htbl) # save H |
| pxor $Xi,$T2 # Karatsuba pre-processing |
| movdqu $Xi,0x10($Htbl) # save H^2 |
| palignr \$8,$T1,$T2 # low part is H.lo^H.hi... |
| movdqu $T2,0x20($Htbl) # save Karatsuba "salt" |
| ___ |
| if ($do4xaggr) { |
| &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H^3 |
| &reduction_alg9 ($Xhi,$Xi); |
| $code.=<<___; |
| movdqa $Xi,$T3 |
| ___ |
| &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H^4 |
| &reduction_alg9 ($Xhi,$Xi); |
| $code.=<<___; |
| pshufd \$0b01001110,$T3,$T1 |
| pshufd \$0b01001110,$Xi,$T2 |
| pxor $T3,$T1 # Karatsuba pre-processing |
| movdqu $T3,0x30($Htbl) # save H^3 |
| pxor $Xi,$T2 # Karatsuba pre-processing |
| movdqu $Xi,0x40($Htbl) # save H^4 |
| palignr \$8,$T1,$T2 # low part is H^3.lo^H^3.hi... |
| movdqu $T2,0x50($Htbl) # save Karatsuba "salt" |
| ___ |
| } |
| $code.=<<___ if ($win64); |
| movaps (%rsp),%xmm6 |
| lea 0x18(%rsp),%rsp |
| .LSEH_end_gcm_init_clmul: |
| ___ |
| $code.=<<___; |
| ret |
| .cfi_endproc |
| .size gcm_init_clmul,.-gcm_init_clmul |
| ___ |
| } |
| |
| { my ($Xip,$Htbl)=@_4args; |
| |
| $code.=<<___; |
| .globl gcm_gmult_clmul |
| .type gcm_gmult_clmul,\@abi-omnipotent |
| .align 16 |
| gcm_gmult_clmul: |
| .cfi_startproc |
| .L_gmult_clmul: |
| movdqu ($Xip),$Xi |
| movdqa .Lbswap_mask(%rip),$T3 |
| movdqu ($Htbl),$Hkey |
| movdqu 0x20($Htbl),$T2 |
| pshufb $T3,$Xi |
| ___ |
| &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$T2); |
| $code.=<<___ if (0 || (&reduction_alg9($Xhi,$Xi)&&0)); |
| # experimental alternative. special thing about is that there |
| # no dependency between the two multiplications... |
| mov \$`0xE1<<1`,%eax |
| mov \$0xA040608020C0E000,%r10 # ((7..0)·0xE0)&0xff |
| mov \$0x07,%r11d |
| movq %rax,$T1 |
| movq %r10,$T2 |
| movq %r11,$T3 # borrow $T3 |
| pand $Xi,$T3 |
| pshufb $T3,$T2 # ($Xi&7)·0xE0 |
| movq %rax,$T3 |
| pclmulqdq \$0x00,$Xi,$T1 # ·(0xE1<<1) |
| pxor $Xi,$T2 |
| pslldq \$15,$T2 |
| paddd $T2,$T2 # <<(64+56+1) |
| pxor $T2,$Xi |
| pclmulqdq \$0x01,$T3,$Xi |
| movdqa .Lbswap_mask(%rip),$T3 # reload $T3 |
| psrldq \$1,$T1 |
| pxor $T1,$Xhi |
| pslldq \$7,$Xi |
| pxor $Xhi,$Xi |
| ___ |
| $code.=<<___; |
| pshufb $T3,$Xi |
| movdqu $Xi,($Xip) |
| ret |
| .cfi_endproc |
| .size gcm_gmult_clmul,.-gcm_gmult_clmul |
| ___ |
| } |
| |
| { my ($Xip,$Htbl,$inp,$len)=@_4args; |
| my ($Xln,$Xmn,$Xhn,$Hkey2,$HK) = map("%xmm$_",(3..7)); |
| my ($T1,$T2,$T3)=map("%xmm$_",(8..10)); |
| |
| $code.=<<___; |
| .globl gcm_ghash_clmul |
| .type gcm_ghash_clmul,\@abi-omnipotent |
| .align 32 |
| gcm_ghash_clmul: |
| .cfi_startproc |
| .L_ghash_clmul: |
| ___ |
| $code.=<<___ if ($win64); |
| lea -0x88(%rsp),%rax |
| .LSEH_begin_gcm_ghash_clmul: |
| # I can't trust assembler to use specific encoding:-( |
| .byte 0x48,0x8d,0x60,0xe0 #lea -0x20(%rax),%rsp |
| .byte 0x0f,0x29,0x70,0xe0 #movaps %xmm6,-0x20(%rax) |
| .byte 0x0f,0x29,0x78,0xf0 #movaps %xmm7,-0x10(%rax) |
| .byte 0x44,0x0f,0x29,0x00 #movaps %xmm8,0(%rax) |
| .byte 0x44,0x0f,0x29,0x48,0x10 #movaps %xmm9,0x10(%rax) |
| .byte 0x44,0x0f,0x29,0x50,0x20 #movaps %xmm10,0x20(%rax) |
| .byte 0x44,0x0f,0x29,0x58,0x30 #movaps %xmm11,0x30(%rax) |
| .byte 0x44,0x0f,0x29,0x60,0x40 #movaps %xmm12,0x40(%rax) |
| .byte 0x44,0x0f,0x29,0x68,0x50 #movaps %xmm13,0x50(%rax) |
| .byte 0x44,0x0f,0x29,0x70,0x60 #movaps %xmm14,0x60(%rax) |
| .byte 0x44,0x0f,0x29,0x78,0x70 #movaps %xmm15,0x70(%rax) |
| ___ |
| $code.=<<___; |
| movdqa .Lbswap_mask(%rip),$T3 |
| |
| movdqu ($Xip),$Xi |
| movdqu ($Htbl),$Hkey |
| movdqu 0x20($Htbl),$HK |
| pshufb $T3,$Xi |
| |
| sub \$0x10,$len |
| jz .Lodd_tail |
| |
| movdqu 0x10($Htbl),$Hkey2 |
| ___ |
| if ($do4xaggr) { |
| my ($Xl,$Xm,$Xh,$Hkey3,$Hkey4)=map("%xmm$_",(11..15)); |
| |
| $code.=<<___; |
| leaq OPENSSL_ia32cap_P(%rip),%rax |
| mov 4(%rax),%eax |
| cmp \$0x30,$len |
| jb .Lskip4x |
| |
| and \$`1<<26|1<<22`,%eax # isolate MOVBE+XSAVE |
| cmp \$`1<<22`,%eax # check for MOVBE without XSAVE |
| je .Lskip4x |
| |
| sub \$0x30,$len |
| mov \$0xA040608020C0E000,%rax # ((7..0)·0xE0)&0xff |
| movdqu 0x30($Htbl),$Hkey3 |
| movdqu 0x40($Htbl),$Hkey4 |
| |
| ####### |
| # Xi+4 =[(H*Ii+3) + (H^2*Ii+2) + (H^3*Ii+1) + H^4*(Ii+Xi)] mod P |
| # |
| movdqu 0x30($inp),$Xln |
| movdqu 0x20($inp),$Xl |
| pshufb $T3,$Xln |
| pshufb $T3,$Xl |
| movdqa $Xln,$Xhn |
| pshufd \$0b01001110,$Xln,$Xmn |
| pxor $Xln,$Xmn |
| pclmulqdq \$0x00,$Hkey,$Xln |
| pclmulqdq \$0x11,$Hkey,$Xhn |
| pclmulqdq \$0x00,$HK,$Xmn |
| |
| movdqa $Xl,$Xh |
| pshufd \$0b01001110,$Xl,$Xm |
| pxor $Xl,$Xm |
| pclmulqdq \$0x00,$Hkey2,$Xl |
| pclmulqdq \$0x11,$Hkey2,$Xh |
| pclmulqdq \$0x10,$HK,$Xm |
| xorps $Xl,$Xln |
| xorps $Xh,$Xhn |
| movups 0x50($Htbl),$HK |
| xorps $Xm,$Xmn |
| |
| movdqu 0x10($inp),$Xl |
| movdqu 0($inp),$T1 |
| pshufb $T3,$Xl |
| 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:-( |
| .byte 0x48,0x8d,0x60,0xe0 #lea -0x20(%rax),%rsp |
| .byte 0x0f,0x29,0x70,0xe0 #movaps %xmm6,-0x20(%rax) |
| .byte 0x0f,0x29,0x78,0xf0 #movaps %xmm7,-0x10(%rax) |
| .byte 0x44,0x0f,0x29,0x00 #movaps %xmm8,0(%rax) |
| .byte 0x44,0x0f,0x29,0x48,0x10 #movaps %xmm9,0x10(%rax) |
| .byte 0x44,0x0f,0x29,0x50,0x20 #movaps %xmm10,0x20(%rax) |
| .byte 0x44,0x0f,0x29,0x58,0x30 #movaps %xmm11,0x30(%rax) |
| .byte 0x44,0x0f,0x29,0x60,0x40 #movaps %xmm12,0x40(%rax) |
| .byte 0x44,0x0f,0x29,0x68,0x50 #movaps %xmm13,0x50(%rax) |
| .byte 0x44,0x0f,0x29,0x70,0x60 #movaps %xmm14,0x60(%rax) |
| .byte 0x44,0x0f,0x29,0x78,0x70 #movaps %xmm15,0x70(%rax) |
| ___ |
| $code.=<<___; |
| vzeroupper |
| |
| vmovdqu ($Xip),$Xi # load $Xi |
| lea .L0x1c2_polynomial(%rip),%r10 |
| lea 0x40($Htbl),$Htbl # size optimization |
| vmovdqu .Lbswap_mask(%rip),$bswap |
| vpshufb $bswap,$Xi,$Xi |
| cmp \$0x80,$len |
| jb .Lshort_avx |
| sub \$0x80,$len |
| |
| vmovdqu 0x70($inp),$Ii # I[7] |
| vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1 |
| vpshufb $bswap,$Ii,$Ii |
| vmovdqu 0x20-0x40($Htbl),$HK |
| |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vmovdqu 0x60($inp),$Ij # I[6] |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpxor $Ii,$T2,$T2 |
| vpshufb $bswap,$Ij,$Ij |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2 |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vmovdqu 0x50($inp),$Ii # I[5] |
| vpclmulqdq \$0x00,$HK,$T2,$Xmi |
| vpxor $Ij,$T1,$T1 |
| |
| vpshufb $bswap,$Ii,$Ii |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
| vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3 |
| vpxor $Ii,$T2,$T2 |
| vmovdqu 0x40($inp),$Ij # I[4] |
| vpclmulqdq \$0x10,$HK,$T1,$Zmi |
| vmovdqu 0x50-0x40($Htbl),$HK |
| |
| vpshufb $bswap,$Ij,$Ij |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpxor $Xhi,$Zhi,$Zhi |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4 |
| vpxor $Xmi,$Zmi,$Zmi |
| vpclmulqdq \$0x00,$HK,$T2,$Xmi |
| vpxor $Ij,$T1,$T1 |
| |
| vmovdqu 0x30($inp),$Ii # I[3] |
| vpxor $Zlo,$Xlo,$Xlo |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
| vpxor $Zhi,$Xhi,$Xhi |
| vpshufb $bswap,$Ii,$Ii |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
| vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5 |
| vpxor $Zmi,$Xmi,$Xmi |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpclmulqdq \$0x10,$HK,$T1,$Zmi |
| vmovdqu 0x80-0x40($Htbl),$HK |
| vpxor $Ii,$T2,$T2 |
| |
| vmovdqu 0x20($inp),$Ij # I[2] |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpxor $Xhi,$Zhi,$Zhi |
| vpshufb $bswap,$Ij,$Ij |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6 |
| vpxor $Xmi,$Zmi,$Zmi |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpclmulqdq \$0x00,$HK,$T2,$Xmi |
| vpxor $Ij,$T1,$T1 |
| |
| vmovdqu 0x10($inp),$Ii # I[1] |
| vpxor $Zlo,$Xlo,$Xlo |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
| vpxor $Zhi,$Xhi,$Xhi |
| vpshufb $bswap,$Ii,$Ii |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
| vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7 |
| vpxor $Zmi,$Xmi,$Xmi |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpclmulqdq \$0x10,$HK,$T1,$Zmi |
| vmovdqu 0xb0-0x40($Htbl),$HK |
| vpxor $Ii,$T2,$T2 |
| |
| vmovdqu ($inp),$Ij # I[0] |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpxor $Xhi,$Zhi,$Zhi |
| vpshufb $bswap,$Ij,$Ij |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0xa0-0x40($Htbl),$Hkey # $Hkey^8 |
| vpxor $Xmi,$Zmi,$Zmi |
| vpclmulqdq \$0x10,$HK,$T2,$Xmi |
| |
| lea 0x80($inp),$inp |
| cmp \$0x80,$len |
| jb .Ltail_avx |
| |
| vpxor $Xi,$Ij,$Ij # accumulate $Xi |
| sub \$0x80,$len |
| jmp .Loop8x_avx |
| |
| .align 32 |
| .Loop8x_avx: |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vmovdqu 0x70($inp),$Ii # I[7] |
| vpxor $Xlo,$Zlo,$Zlo |
| vpxor $Ij,$T1,$T1 |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Xi |
| vpshufb $bswap,$Ii,$Ii |
| vpxor $Xhi,$Zhi,$Zhi |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Xo |
| vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1 |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpxor $Xmi,$Zmi,$Zmi |
| vpclmulqdq \$0x00,$HK,$T1,$Tred |
| vmovdqu 0x20-0x40($Htbl),$HK |
| vpxor $Ii,$T2,$T2 |
| |
| vmovdqu 0x60($inp),$Ij # I[6] |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpxor $Zlo,$Xi,$Xi # collect result |
| vpshufb $bswap,$Ij,$Ij |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vxorps $Zhi,$Xo,$Xo |
| vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2 |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpclmulqdq \$0x00,$HK, $T2,$Xmi |
| vpxor $Zmi,$Tred,$Tred |
| vxorps $Ij,$T1,$T1 |
| |
| vmovdqu 0x50($inp),$Ii # I[5] |
| vpxor $Xi,$Tred,$Tred # aggregated Karatsuba post-processing |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
| vpxor $Xo,$Tred,$Tred |
| vpslldq \$8,$Tred,$T2 |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
| vpsrldq \$8,$Tred,$Tred |
| vpxor $T2, $Xi, $Xi |
| vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3 |
| vpshufb $bswap,$Ii,$Ii |
| vxorps $Tred,$Xo, $Xo |
| vpxor $Xhi,$Zhi,$Zhi |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpclmulqdq \$0x10,$HK, $T1,$Zmi |
| vmovdqu 0x50-0x40($Htbl),$HK |
| vpxor $Ii,$T2,$T2 |
| vpxor $Xmi,$Zmi,$Zmi |
| |
| vmovdqu 0x40($inp),$Ij # I[4] |
| vpalignr \$8,$Xi,$Xi,$Tred # 1st phase |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpshufb $bswap,$Ij,$Ij |
| vpxor $Zlo,$Xlo,$Xlo |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4 |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpxor $Zhi,$Xhi,$Xhi |
| vpclmulqdq \$0x00,$HK, $T2,$Xmi |
| vxorps $Ij,$T1,$T1 |
| vpxor $Zmi,$Xmi,$Xmi |
| |
| vmovdqu 0x30($inp),$Ii # I[3] |
| vpclmulqdq \$0x10,(%r10),$Xi,$Xi |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
| vpshufb $bswap,$Ii,$Ii |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
| vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5 |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpxor $Xhi,$Zhi,$Zhi |
| vpclmulqdq \$0x10,$HK, $T1,$Zmi |
| vmovdqu 0x80-0x40($Htbl),$HK |
| vpxor $Ii,$T2,$T2 |
| vpxor $Xmi,$Zmi,$Zmi |
| |
| vmovdqu 0x20($inp),$Ij # I[2] |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpshufb $bswap,$Ij,$Ij |
| vpxor $Zlo,$Xlo,$Xlo |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6 |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpxor $Zhi,$Xhi,$Xhi |
| vpclmulqdq \$0x00,$HK, $T2,$Xmi |
| vpxor $Ij,$T1,$T1 |
| vpxor $Zmi,$Xmi,$Xmi |
| vxorps $Tred,$Xi,$Xi |
| |
| vmovdqu 0x10($inp),$Ii # I[1] |
| vpalignr \$8,$Xi,$Xi,$Tred # 2nd phase |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo |
| vpshufb $bswap,$Ii,$Ii |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi |
| vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7 |
| vpclmulqdq \$0x10,(%r10),$Xi,$Xi |
| vxorps $Xo,$Tred,$Tred |
| vpunpckhqdq $Ii,$Ii,$T2 |
| vpxor $Xhi,$Zhi,$Zhi |
| vpclmulqdq \$0x10,$HK, $T1,$Zmi |
| vmovdqu 0xb0-0x40($Htbl),$HK |
| vpxor $Ii,$T2,$T2 |
| vpxor $Xmi,$Zmi,$Zmi |
| |
| vmovdqu ($inp),$Ij # I[0] |
| vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo |
| vpshufb $bswap,$Ij,$Ij |
| vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi |
| vmovdqu 0xa0-0x40($Htbl),$Hkey # $Hkey^8 |
| vpxor $Tred,$Ij,$Ij |
| vpclmulqdq \$0x10,$HK, $T2,$Xmi |
| vpxor $Xi,$Ij,$Ij # accumulate $Xi |
| |
| lea 0x80($inp),$inp |
| sub \$0x80,$len |
| jnc .Loop8x_avx |
| |
| add \$0x80,$len |
| jmp .Ltail_no_xor_avx |
| |
| .align 32 |
| .Lshort_avx: |
| vmovdqu -0x10($inp,$len),$Ii # very last word |
| lea ($inp,$len),$inp |
| vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1 |
| vmovdqu 0x20-0x40($Htbl),$HK |
| vpshufb $bswap,$Ii,$Ij |
| |
| vmovdqa $Xlo,$Zlo # subtle way to zero $Zlo, |
| vmovdqa $Xhi,$Zhi # $Zhi and |
| vmovdqa $Xmi,$Zmi # $Zmi |
| sub \$0x10,$len |
| jz .Ltail_avx |
| |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
| vpxor $Ij,$T1,$T1 |
| vmovdqu -0x20($inp),$Ii |
| vpxor $Xhi,$Zhi,$Zhi |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
| vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2 |
| vpshufb $bswap,$Ii,$Ij |
| vpxor $Xmi,$Zmi,$Zmi |
| vpclmulqdq \$0x00,$HK,$T1,$Xmi |
| vpsrldq \$8,$HK,$HK |
| sub \$0x10,$len |
| jz .Ltail_avx |
| |
| vpunpckhqdq $Ij,$Ij,$T1 |
| vpxor $Xlo,$Zlo,$Zlo |
| vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo |
| vpxor $Ij,$T1,$T1 |
| vmovdqu -0x30($inp),$Ii |
| vpxor $Xhi,$Zhi,$Zhi |
| vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi |
| 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 |
| |
| 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 |
| 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 |
| |
| 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 |
| |
| 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: $!"; |
