#!/usr/bin/env perl
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# Copyright 2017-2020 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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# Keccak-1600 for AVX2.
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#
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# July 2017.
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#
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# To paraphrase Gilles Van Assche, if you contemplate Fig. 2.3 on page
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# 20 of The Keccak reference [or Fig. 5 of FIPS PUB 202], and load data
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# other than A[0][0] in magic order into 6 [256-bit] registers, *each
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# dedicated to one axis*, Pi permutation is reduced to intra-register
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# shuffles...
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#
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# It makes other steps more intricate, but overall, is it a win? To be
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# more specific index permutations organized by quadruples are:
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#
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# [4][4] [3][3] [2][2] [1][1]<-+
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# [0][4] [0][3] [0][2] [0][1]<-+
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# [3][0] [1][0] [4][0] [2][0] |
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# [4][3] [3][1] [2][4] [1][2] |
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# [3][4] [1][3] [4][2] [2][1] |
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# [2][3] [4][1] [1][4] [3][2] |
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# [2][2] [4][4] [1][1] [3][3] -+
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#
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# This however is highly impractical for Theta and Chi. What would help
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# Theta is if x indices were aligned column-wise, or in other words:
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#
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# [0][4] [0][3] [0][2] [0][1]
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# [3][0] [1][0] [4][0] [2][0]
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#vpermq([4][3] [3][1] [2][4] [1][2], 0b01110010)
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# [2][4] [4][3] [1][2] [3][1]
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#vpermq([4][2] [3][4] [2][1] [1][3], 0b10001101)
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# [3][4] [1][3] [4][2] [2][1]
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#vpermq([2][3] [4][1] [1][4] [3][2], 0b01110010)
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# [1][4] [2][3] [3][2] [4][1]
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#vpermq([1][1] [2][2] [3][3] [4][4], 0b00011011)
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# [4][4] [3][3] [2][2] [1][1]
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#
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# So here we have it, lines not marked with vpermq() represent the magic
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# order in which data is to be loaded and maintained. [And lines marked
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# with vpermq() represent Pi circular permutation in chosen layout. Note
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# that first step is permutation-free.] A[0][0] is loaded to register of
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# its own, to all lanes. [A[0][0] is not part of Pi permutation or Rho.]
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# Digits in variables' names denote right-most coordinates:
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my ($A00, # [0][0] [0][0] [0][0] [0][0] # %ymm0
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$A01, # [0][4] [0][3] [0][2] [0][1] # %ymm1
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$A20, # [3][0] [1][0] [4][0] [2][0] # %ymm2
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$A31, # [2][4] [4][3] [1][2] [3][1] # %ymm3
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$A21, # [3][4] [1][3] [4][2] [2][1] # %ymm4
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$A41, # [1][4] [2][3] [3][2] [4][1] # %ymm5
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$A11) = # [4][4] [3][3] [2][2] [1][1] # %ymm6
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map("%ymm$_",(0..6));
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# We also need to map the magic order into offsets within structure:
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my @A_jagged = ([0,0], [1,0], [1,1], [1,2], [1,3], # [0][0..4]
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[2,2], [6,0], [3,1], [4,2], [5,3], # [1][0..4]
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[2,0], [4,0], [6,1], [5,2], [3,3], # [2][0..4]
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[2,3], [3,0], [5,1], [6,2], [4,3], # [3][0..4]
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[2,1], [5,0], [4,1], [3,2], [6,3]); # [4][0..4]
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@A_jagged = map(8*($$_[0]*4+$$_[1]), @A_jagged); # ... and now linear
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# But on the other hand Chi is much better off if y indices were aligned
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# column-wise, not x. For this reason we have to shuffle data prior
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# Chi and revert it afterwards. Prior shuffle is naturally merged with
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# Pi itself:
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#
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# [0][4] [0][3] [0][2] [0][1]
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# [3][0] [1][0] [4][0] [2][0]
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#vpermq([4][3] [3][1] [2][4] [1][2], 0b01110010)
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#vpermq([2][4] [4][3] [1][2] [3][1], 0b00011011) = 0b10001101
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# [3][1] [1][2] [4][3] [2][4]
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#vpermq([4][2] [3][4] [2][1] [1][3], 0b10001101)
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#vpermq([3][4] [1][3] [4][2] [2][1], 0b11100100) = 0b10001101
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# [3][4] [1][3] [4][2] [2][1]
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#vpermq([2][3] [4][1] [1][4] [3][2], 0b01110010)
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#vpermq([1][4] [2][3] [3][2] [4][1], 0b01110010) = 0b00011011
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# [3][2] [1][4] [4][1] [2][3]
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#vpermq([1][1] [2][2] [3][3] [4][4], 0b00011011)
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#vpermq([4][4] [3][3] [2][2] [1][1], 0b10001101) = 0b01110010
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# [3][3] [1][1] [4][4] [2][2]
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#
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# And reverse post-Chi permutation:
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#
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# [0][4] [0][3] [0][2] [0][1]
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# [3][0] [1][0] [4][0] [2][0]
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#vpermq([3][1] [1][2] [4][3] [2][4], 0b00011011)
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# [2][4] [4][3] [1][2] [3][1]
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#vpermq([3][4] [1][3] [4][2] [2][1], 0b11100100) = nop :-)
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# [3][4] [1][3] [4][2] [2][1]
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#vpermq([3][2] [1][4] [4][1] [2][3], 0b10001101)
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# [1][4] [2][3] [3][2] [4][1]
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#vpermq([3][3] [1][1] [4][4] [2][2], 0b01110010)
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# [4][4] [3][3] [2][2] [1][1]
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#
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########################################################################
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# Numbers are cycles per processed byte out of large message.
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#
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# r=1088(*)
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#
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# Haswell 8.7/+10%
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# Skylake 7.8/+20%
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# Ryzen 17(**)
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#
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# (*) Corresponds to SHA3-256. Percentage after slash is improvement
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# coefficient in comparison to scalar keccak1600-x86_64.pl.
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# (**) It's expected that Ryzen performs poorly, because instruction
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# issue rate is limited to two AVX2 instructions per cycle and
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# in addition vpblendd is reportedly bound to specific port.
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# Obviously this code path should not be executed on Ryzen.
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my @T = map("%ymm$_",(7..15));
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my ($C14,$C00,$D00,$D14) = @T[5..8];
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$code.=<<___;
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.text
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.type __KeccakF1600,\@function
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.align 32
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__KeccakF1600:
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lea rhotates_left+96(%rip),%r8
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lea rhotates_right+96(%rip),%r9
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lea iotas(%rip),%r10
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mov \$24,%eax
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jmp .Loop_avx2
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.align 32
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.Loop_avx2:
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######################################### Theta
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vpshufd \$0b01001110,$A20,$C00
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vpxor $A31,$A41,$C14
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vpxor $A11,$A21,@T[2]
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vpxor $A01,$C14,$C14
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vpxor @T[2],$C14,$C14 # C[1..4]
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vpermq \$0b10010011,$C14,@T[4]
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vpxor $A20,$C00,$C00
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vpermq \$0b01001110,$C00,@T[0]
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vpsrlq \$63,$C14,@T[1]
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vpaddq $C14,$C14,@T[2]
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vpor @T[2],@T[1],@T[1] # ROL64(C[1..4],1)
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vpermq \$0b00111001,@T[1],$D14
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vpxor @T[4],@T[1],$D00
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vpermq \$0b00000000,$D00,$D00 # D[0..0] = ROL64(C[1],1) ^ C[4]
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vpxor $A00,$C00,$C00
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vpxor @T[0],$C00,$C00 # C[0..0]
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vpsrlq \$63,$C00,@T[0]
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vpaddq $C00,$C00,@T[1]
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vpor @T[0],@T[1],@T[1] # ROL64(C[0..0],1)
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vpxor $D00,$A20,$A20 # ^= D[0..0]
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vpxor $D00,$A00,$A00 # ^= D[0..0]
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vpblendd \$0b11000000,@T[1],$D14,$D14
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vpblendd \$0b00000011,$C00,@T[4],@T[4]
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vpxor @T[4],$D14,$D14 # D[1..4] = ROL64(C[2..4,0),1) ^ C[0..3]
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######################################### Rho + Pi + pre-Chi shuffle
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vpsllvq 0*32-96(%r8),$A20,@T[3]
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vpsrlvq 0*32-96(%r9),$A20,$A20
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vpor @T[3],$A20,$A20
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vpxor $D14,$A31,$A31 # ^= D[1..4] from Theta
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vpsllvq 2*32-96(%r8),$A31,@T[4]
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vpsrlvq 2*32-96(%r9),$A31,$A31
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vpor @T[4],$A31,$A31
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vpxor $D14,$A21,$A21 # ^= D[1..4] from Theta
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vpsllvq 3*32-96(%r8),$A21,@T[5]
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vpsrlvq 3*32-96(%r9),$A21,$A21
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vpor @T[5],$A21,$A21
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vpxor $D14,$A41,$A41 # ^= D[1..4] from Theta
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vpsllvq 4*32-96(%r8),$A41,@T[6]
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vpsrlvq 4*32-96(%r9),$A41,$A41
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vpor @T[6],$A41,$A41
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vpxor $D14,$A11,$A11 # ^= D[1..4] from Theta
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vpermq \$0b10001101,$A20,@T[3] # $A20 -> future $A31
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vpermq \$0b10001101,$A31,@T[4] # $A31 -> future $A21
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vpsllvq 5*32-96(%r8),$A11,@T[7]
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vpsrlvq 5*32-96(%r9),$A11,@T[1]
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vpor @T[7],@T[1],@T[1] # $A11 -> future $A01
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vpxor $D14,$A01,$A01 # ^= D[1..4] from Theta
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vpermq \$0b00011011,$A21,@T[5] # $A21 -> future $A41
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vpermq \$0b01110010,$A41,@T[6] # $A41 -> future $A11
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vpsllvq 1*32-96(%r8),$A01,@T[8]
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vpsrlvq 1*32-96(%r9),$A01,@T[2]
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vpor @T[8],@T[2],@T[2] # $A01 -> future $A20
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######################################### Chi
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vpsrldq \$8,@T[1],@T[7]
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vpandn @T[7],@T[1],@T[0] # tgting [0][0] [0][0] [0][0] [0][0]
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vpblendd \$0b00001100,@T[6],@T[2],$A31 # [4][4] [2][0]
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vpblendd \$0b00001100,@T[2],@T[4],@T[8] # [4][0] [2][1]
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vpblendd \$0b00001100,@T[4],@T[3],$A41 # [4][2] [2][4]
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vpblendd \$0b00001100,@T[3],@T[2],@T[7] # [4][3] [2][0]
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vpblendd \$0b00110000,@T[4],$A31,$A31 # [1][3] [4][4] [2][0]
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vpblendd \$0b00110000,@T[5],@T[8],@T[8] # [1][4] [4][0] [2][1]
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vpblendd \$0b00110000,@T[2],$A41,$A41 # [1][0] [4][2] [2][4]
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vpblendd \$0b00110000,@T[6],@T[7],@T[7] # [1][1] [4][3] [2][0]
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vpblendd \$0b11000000,@T[5],$A31,$A31 # [3][2] [1][3] [4][4] [2][0]
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vpblendd \$0b11000000,@T[6],@T[8],@T[8] # [3][3] [1][4] [4][0] [2][1]
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vpblendd \$0b11000000,@T[6],$A41,$A41 # [3][3] [1][0] [4][2] [2][4]
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vpblendd \$0b11000000,@T[4],@T[7],@T[7] # [3][4] [1][1] [4][3] [2][0]
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vpandn @T[8],$A31,$A31 # tgting [3][1] [1][2] [4][3] [2][4]
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vpandn @T[7],$A41,$A41 # tgting [3][2] [1][4] [4][1] [2][3]
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vpblendd \$0b00001100,@T[2],@T[5],$A11 # [4][0] [2][3]
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vpblendd \$0b00001100,@T[5],@T[3],@T[8] # [4][1] [2][4]
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vpxor @T[3],$A31,$A31
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vpblendd \$0b00110000,@T[3],$A11,$A11 # [1][2] [4][0] [2][3]
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vpblendd \$0b00110000,@T[4],@T[8],@T[8] # [1][3] [4][1] [2][4]
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vpxor @T[5],$A41,$A41
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vpblendd \$0b11000000,@T[4],$A11,$A11 # [3][4] [1][2] [4][0] [2][3]
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vpblendd \$0b11000000,@T[2],@T[8],@T[8] # [3][0] [1][3] [4][1] [2][4]
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vpandn @T[8],$A11,$A11 # tgting [3][3] [1][1] [4][4] [2][2]
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vpxor @T[6],$A11,$A11
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vpermq \$0b00011110,@T[1],$A21 # [0][1] [0][2] [0][4] [0][3]
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vpblendd \$0b00110000,$A00,$A21,@T[8] # [0][1] [0][0] [0][4] [0][3]
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vpermq \$0b00111001,@T[1],$A01 # [0][1] [0][4] [0][3] [0][2]
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vpblendd \$0b11000000,$A00,$A01,$A01 # [0][0] [0][4] [0][3] [0][2]
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vpandn @T[8],$A01,$A01 # tgting [0][4] [0][3] [0][2] [0][1]
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vpblendd \$0b00001100,@T[5],@T[4],$A20 # [4][1] [2][1]
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vpblendd \$0b00001100,@T[4],@T[6],@T[7] # [4][2] [2][2]
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vpblendd \$0b00110000,@T[6],$A20,$A20 # [1][1] [4][1] [2][1]
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vpblendd \$0b00110000,@T[3],@T[7],@T[7] # [1][2] [4][2] [2][2]
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vpblendd \$0b11000000,@T[3],$A20,$A20 # [3][1] [1][1] [4][1] [2][1]
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vpblendd \$0b11000000,@T[5],@T[7],@T[7] # [3][2] [1][2] [4][2] [2][2]
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vpandn @T[7],$A20,$A20 # tgting [3][0] [1][0] [4][0] [2][0]
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vpxor @T[2],$A20,$A20
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vpermq \$0b00000000,@T[0],@T[0] # [0][0] [0][0] [0][0] [0][0]
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vpermq \$0b00011011,$A31,$A31 # post-Chi shuffle
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vpermq \$0b10001101,$A41,$A41
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vpermq \$0b01110010,$A11,$A11
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vpblendd \$0b00001100,@T[3],@T[6],$A21 # [4][3] [2][2]
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vpblendd \$0b00001100,@T[6],@T[5],@T[7] # [4][4] [2][3]
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vpblendd \$0b00110000,@T[5],$A21,$A21 # [1][4] [4][3] [2][2]
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vpblendd \$0b00110000,@T[2],@T[7],@T[7] # [1][0] [4][4] [2][3]
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vpblendd \$0b11000000,@T[2],$A21,$A21 # [3][0] [1][4] [4][3] [2][2]
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vpblendd \$0b11000000,@T[3],@T[7],@T[7] # [3][1] [1][0] [4][4] [2][3]
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vpandn @T[7],$A21,$A21 # tgting [3][4] [1][3] [4][2] [2][1]
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vpxor @T[0],$A00,$A00
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vpxor @T[1],$A01,$A01
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vpxor @T[4],$A21,$A21
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######################################### Iota
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vpxor (%r10),$A00,$A00
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lea 32(%r10),%r10
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dec %eax
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jnz .Loop_avx2
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ret
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.size __KeccakF1600,.-__KeccakF1600
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___
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my ($A_flat,$inp,$len,$bsz) = ("%rdi","%rsi","%rdx","%rcx");
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my $out = $inp; # in squeeze
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$code.=<<___;
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.globl SHA3_absorb
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.type SHA3_absorb,\@function
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.align 32
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SHA3_absorb:
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mov %rsp,%r11
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lea -240(%rsp),%rsp
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and \$-32,%rsp
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lea 96($A_flat),$A_flat
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lea 96($inp),$inp
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lea 96(%rsp),%r10
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vzeroupper
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vpbroadcastq -96($A_flat),$A00 # load A[5][5]
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vmovdqu 8+32*0-96($A_flat),$A01
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vmovdqu 8+32*1-96($A_flat),$A20
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vmovdqu 8+32*2-96($A_flat),$A31
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vmovdqu 8+32*3-96($A_flat),$A21
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vmovdqu 8+32*4-96($A_flat),$A41
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vmovdqu 8+32*5-96($A_flat),$A11
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vpxor @T[0],@T[0],@T[0]
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vmovdqa @T[0],32*2-96(%r10) # zero transfer area on stack
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vmovdqa @T[0],32*3-96(%r10)
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vmovdqa @T[0],32*4-96(%r10)
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vmovdqa @T[0],32*5-96(%r10)
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vmovdqa @T[0],32*6-96(%r10)
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.Loop_absorb_avx2:
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mov $bsz,%rax
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sub $bsz,$len
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jc .Ldone_absorb_avx2
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shr \$3,%eax
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vpbroadcastq 0-96($inp),@T[0]
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vmovdqu 8-96($inp),@T[1]
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sub \$4,%eax
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___
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for(my $i=5; $i<25; $i++) {
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$code.=<<___
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dec %eax
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jz .Labsorved_avx2
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mov 8*$i-96($inp),%r8
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mov %r8,$A_jagged[$i]-96(%r10)
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___
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}
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$code.=<<___;
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.Labsorved_avx2:
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lea ($inp,$bsz),$inp
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vpxor @T[0],$A00,$A00
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vpxor @T[1],$A01,$A01
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vpxor 32*2-96(%r10),$A20,$A20
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vpxor 32*3-96(%r10),$A31,$A31
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vpxor 32*4-96(%r10),$A21,$A21
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vpxor 32*5-96(%r10),$A41,$A41
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vpxor 32*6-96(%r10),$A11,$A11
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call __KeccakF1600
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lea 96(%rsp),%r10
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jmp .Loop_absorb_avx2
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.Ldone_absorb_avx2:
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vmovq %xmm0,-96($A_flat)
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vmovdqu $A01,8+32*0-96($A_flat)
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vmovdqu $A20,8+32*1-96($A_flat)
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vmovdqu $A31,8+32*2-96($A_flat)
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vmovdqu $A21,8+32*3-96($A_flat)
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vmovdqu $A41,8+32*4-96($A_flat)
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vmovdqu $A11,8+32*5-96($A_flat)
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vzeroupper
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lea (%r11),%rsp
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lea ($len,$bsz),%rax # return value
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ret
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.size SHA3_absorb,.-SHA3_absorb
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.globl SHA3_squeeze
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.type SHA3_squeeze,\@function
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.align 32
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SHA3_squeeze:
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mov %rsp,%r11
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lea 96($A_flat),$A_flat
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shr \$3,$bsz
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vzeroupper
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vpbroadcastq -96($A_flat),$A00
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vpxor @T[0],@T[0],@T[0]
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vmovdqu 8+32*0-96($A_flat),$A01
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vmovdqu 8+32*1-96($A_flat),$A20
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vmovdqu 8+32*2-96($A_flat),$A31
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vmovdqu 8+32*3-96($A_flat),$A21
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vmovdqu 8+32*4-96($A_flat),$A41
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vmovdqu 8+32*5-96($A_flat),$A11
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mov $bsz,%rax
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.Loop_squeeze_avx2:
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mov @A_jagged[$i]-96($A_flat),%r8
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___
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for (my $i=0; $i<25; $i++) {
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$code.=<<___;
|
sub \$8,$len
|
jc .Ltail_squeeze_avx2
|
mov %r8,($out)
|
lea 8($out),$out
|
je .Ldone_squeeze_avx2
|
dec %eax
|
je .Lextend_output_avx2
|
mov @A_jagged[$i+1]-120($A_flat),%r8
|
___
|
}
|
$code.=<<___;
|
.Lextend_output_avx2:
|
call __KeccakF1600
|
|
vmovq %xmm0,-96($A_flat)
|
vmovdqu $A01,8+32*0-96($A_flat)
|
vmovdqu $A20,8+32*1-96($A_flat)
|
vmovdqu $A31,8+32*2-96($A_flat)
|
vmovdqu $A21,8+32*3-96($A_flat)
|
vmovdqu $A41,8+32*4-96($A_flat)
|
vmovdqu $A11,8+32*5-96($A_flat)
|
|
mov $bsz,%rax
|
jmp .Loop_squeeze_avx2
|
|
|
.Ltail_squeeze_avx2:
|
add \$8,$len
|
.Loop_tail_avx2:
|
mov %r8b,($out)
|
lea 1($out),$out
|
shr \$8,%r8
|
dec $len
|
jnz .Loop_tail_avx2
|
|
.Ldone_squeeze_avx2:
|
vzeroupper
|
|
lea (%r11),%rsp
|
ret
|
.size SHA3_squeeze,.-SHA3_squeeze
|
|
.align 64
|
rhotates_left:
|
.quad 3, 18, 36, 41 # [2][0] [4][0] [1][0] [3][0]
|
.quad 1, 62, 28, 27 # [0][1] [0][2] [0][3] [0][4]
|
.quad 45, 6, 56, 39 # [3][1] [1][2] [4][3] [2][4]
|
.quad 10, 61, 55, 8 # [2][1] [4][2] [1][3] [3][4]
|
.quad 2, 15, 25, 20 # [4][1] [3][2] [2][3] [1][4]
|
.quad 44, 43, 21, 14 # [1][1] [2][2] [3][3] [4][4]
|
rhotates_right:
|
.quad 64-3, 64-18, 64-36, 64-41
|
.quad 64-1, 64-62, 64-28, 64-27
|
.quad 64-45, 64-6, 64-56, 64-39
|
.quad 64-10, 64-61, 64-55, 64-8
|
.quad 64-2, 64-15, 64-25, 64-20
|
.quad 64-44, 64-43, 64-21, 64-14
|
iotas:
|
.quad 0x0000000000000001, 0x0000000000000001, 0x0000000000000001, 0x0000000000000001
|
.quad 0x0000000000008082, 0x0000000000008082, 0x0000000000008082, 0x0000000000008082
|
.quad 0x800000000000808a, 0x800000000000808a, 0x800000000000808a, 0x800000000000808a
|
.quad 0x8000000080008000, 0x8000000080008000, 0x8000000080008000, 0x8000000080008000
|
.quad 0x000000000000808b, 0x000000000000808b, 0x000000000000808b, 0x000000000000808b
|
.quad 0x0000000080000001, 0x0000000080000001, 0x0000000080000001, 0x0000000080000001
|
.quad 0x8000000080008081, 0x8000000080008081, 0x8000000080008081, 0x8000000080008081
|
.quad 0x8000000000008009, 0x8000000000008009, 0x8000000000008009, 0x8000000000008009
|
.quad 0x000000000000008a, 0x000000000000008a, 0x000000000000008a, 0x000000000000008a
|
.quad 0x0000000000000088, 0x0000000000000088, 0x0000000000000088, 0x0000000000000088
|
.quad 0x0000000080008009, 0x0000000080008009, 0x0000000080008009, 0x0000000080008009
|
.quad 0x000000008000000a, 0x000000008000000a, 0x000000008000000a, 0x000000008000000a
|
.quad 0x000000008000808b, 0x000000008000808b, 0x000000008000808b, 0x000000008000808b
|
.quad 0x800000000000008b, 0x800000000000008b, 0x800000000000008b, 0x800000000000008b
|
.quad 0x8000000000008089, 0x8000000000008089, 0x8000000000008089, 0x8000000000008089
|
.quad 0x8000000000008003, 0x8000000000008003, 0x8000000000008003, 0x8000000000008003
|
.quad 0x8000000000008002, 0x8000000000008002, 0x8000000000008002, 0x8000000000008002
|
.quad 0x8000000000000080, 0x8000000000000080, 0x8000000000000080, 0x8000000000000080
|
.quad 0x000000000000800a, 0x000000000000800a, 0x000000000000800a, 0x000000000000800a
|
.quad 0x800000008000000a, 0x800000008000000a, 0x800000008000000a, 0x800000008000000a
|
.quad 0x8000000080008081, 0x8000000080008081, 0x8000000080008081, 0x8000000080008081
|
.quad 0x8000000000008080, 0x8000000000008080, 0x8000000000008080, 0x8000000000008080
|
.quad 0x0000000080000001, 0x0000000080000001, 0x0000000080000001, 0x0000000080000001
|
.quad 0x8000000080008008, 0x8000000080008008, 0x8000000080008008, 0x8000000080008008
|
|
.asciz "Keccak-1600 absorb and squeeze for AVX2, CRYPTOGAMS by <appro\@openssl.org>"
|
___
|
|
$output=pop;
|
open STDOUT,">$output";
|
print $code;
|
close STDOUT or die "error closing STDOUT: $!";
|
