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linux/arch/x86/crypto/chacha20-ssse3-x86_64.S

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crypto: chacha20 - Add a SSSE3 SIMD variant for x86_64 Implements an x86_64 assembler driver for the ChaCha20 stream cipher. This single block variant works on a single state matrix using SSE instructions. It requires SSSE3 due the use of pshufb for efficient 8/16-bit rotate operations. For large messages, throughput increases by ~65% compared to chacha20-generic: testing speed of chacha20 (chacha20-generic) encryption test 0 (256 bit key, 16 byte blocks): 45089207 operations in 10 seconds (721427312 bytes) test 1 (256 bit key, 64 byte blocks): 43839521 operations in 10 seconds (2805729344 bytes) test 2 (256 bit key, 256 byte blocks): 12702056 operations in 10 seconds (3251726336 bytes) test 3 (256 bit key, 1024 byte blocks): 3371173 operations in 10 seconds (3452081152 bytes) test 4 (256 bit key, 8192 byte blocks): 422468 operations in 10 seconds (3460857856 bytes) testing speed of chacha20 (chacha20-simd) encryption test 0 (256 bit key, 16 byte blocks): 43141886 operations in 10 seconds (690270176 bytes) test 1 (256 bit key, 64 byte blocks): 46845874 operations in 10 seconds (2998135936 bytes) test 2 (256 bit key, 256 byte blocks): 18458512 operations in 10 seconds (4725379072 bytes) test 3 (256 bit key, 1024 byte blocks): 5360533 operations in 10 seconds (5489185792 bytes) test 4 (256 bit key, 8192 byte blocks): 692846 operations in 10 seconds (5675794432 bytes) Benchmark results from a Core i5-4670T. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-16 17:14:01 +00:00
/*
* ChaCha20 256-bit cipher algorithm, RFC7539, x64 SSSE3 functions
*
* Copyright (C) 2015 Martin Willi
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/linkage.h>
.data
.align 16
ROT8: .octa 0x0e0d0c0f0a09080b0605040702010003
ROT16: .octa 0x0d0c0f0e09080b0a0504070601000302
crypto: chacha20 - Add a four block SSSE3 variant for x86_64 Extends the x86_64 SSSE3 ChaCha20 implementation by a function processing four ChaCha20 blocks in parallel. This avoids the word shuffling needed in the single block variant, further increasing throughput. For large messages, throughput increases by ~110% compared to single block SSSE3: testing speed of chacha20 (chacha20-simd) encryption test 0 (256 bit key, 16 byte blocks): 43141886 operations in 10 seconds (690270176 bytes) test 1 (256 bit key, 64 byte blocks): 46845874 operations in 10 seconds (2998135936 bytes) test 2 (256 bit key, 256 byte blocks): 18458512 operations in 10 seconds (4725379072 bytes) test 3 (256 bit key, 1024 byte blocks): 5360533 operations in 10 seconds (5489185792 bytes) test 4 (256 bit key, 8192 byte blocks): 692846 operations in 10 seconds (5675794432 bytes) testing speed of chacha20 (chacha20-simd) encryption test 0 (256 bit key, 16 byte blocks): 42249230 operations in 10 seconds (675987680 bytes) test 1 (256 bit key, 64 byte blocks): 46441641 operations in 10 seconds (2972265024 bytes) test 2 (256 bit key, 256 byte blocks): 33028112 operations in 10 seconds (8455196672 bytes) test 3 (256 bit key, 1024 byte blocks): 11568759 operations in 10 seconds (11846409216 bytes) test 4 (256 bit key, 8192 byte blocks): 1448761 operations in 10 seconds (11868250112 bytes) Benchmark results from a Core i5-4670T. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-16 17:14:02 +00:00
CTRINC: .octa 0x00000003000000020000000100000000
crypto: chacha20 - Add a SSSE3 SIMD variant for x86_64 Implements an x86_64 assembler driver for the ChaCha20 stream cipher. This single block variant works on a single state matrix using SSE instructions. It requires SSSE3 due the use of pshufb for efficient 8/16-bit rotate operations. For large messages, throughput increases by ~65% compared to chacha20-generic: testing speed of chacha20 (chacha20-generic) encryption test 0 (256 bit key, 16 byte blocks): 45089207 operations in 10 seconds (721427312 bytes) test 1 (256 bit key, 64 byte blocks): 43839521 operations in 10 seconds (2805729344 bytes) test 2 (256 bit key, 256 byte blocks): 12702056 operations in 10 seconds (3251726336 bytes) test 3 (256 bit key, 1024 byte blocks): 3371173 operations in 10 seconds (3452081152 bytes) test 4 (256 bit key, 8192 byte blocks): 422468 operations in 10 seconds (3460857856 bytes) testing speed of chacha20 (chacha20-simd) encryption test 0 (256 bit key, 16 byte blocks): 43141886 operations in 10 seconds (690270176 bytes) test 1 (256 bit key, 64 byte blocks): 46845874 operations in 10 seconds (2998135936 bytes) test 2 (256 bit key, 256 byte blocks): 18458512 operations in 10 seconds (4725379072 bytes) test 3 (256 bit key, 1024 byte blocks): 5360533 operations in 10 seconds (5489185792 bytes) test 4 (256 bit key, 8192 byte blocks): 692846 operations in 10 seconds (5675794432 bytes) Benchmark results from a Core i5-4670T. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-16 17:14:01 +00:00
.text
ENTRY(chacha20_block_xor_ssse3)
# %rdi: Input state matrix, s
# %rsi: 1 data block output, o
# %rdx: 1 data block input, i
# This function encrypts one ChaCha20 block by loading the state matrix
# in four SSE registers. It performs matrix operation on four words in
# parallel, but requireds shuffling to rearrange the words after each
# round. 8/16-bit word rotation is done with the slightly better
# performing SSSE3 byte shuffling, 7/12-bit word rotation uses
# traditional shift+OR.
# x0..3 = s0..3
movdqa 0x00(%rdi),%xmm0
movdqa 0x10(%rdi),%xmm1
movdqa 0x20(%rdi),%xmm2
movdqa 0x30(%rdi),%xmm3
movdqa %xmm0,%xmm8
movdqa %xmm1,%xmm9
movdqa %xmm2,%xmm10
movdqa %xmm3,%xmm11
movdqa ROT8(%rip),%xmm4
movdqa ROT16(%rip),%xmm5
mov $10,%ecx
.Ldoubleround:
# x0 += x1, x3 = rotl32(x3 ^ x0, 16)
paddd %xmm1,%xmm0
pxor %xmm0,%xmm3
pshufb %xmm5,%xmm3
# x2 += x3, x1 = rotl32(x1 ^ x2, 12)
paddd %xmm3,%xmm2
pxor %xmm2,%xmm1
movdqa %xmm1,%xmm6
pslld $12,%xmm6
psrld $20,%xmm1
por %xmm6,%xmm1
# x0 += x1, x3 = rotl32(x3 ^ x0, 8)
paddd %xmm1,%xmm0
pxor %xmm0,%xmm3
pshufb %xmm4,%xmm3
# x2 += x3, x1 = rotl32(x1 ^ x2, 7)
paddd %xmm3,%xmm2
pxor %xmm2,%xmm1
movdqa %xmm1,%xmm7
pslld $7,%xmm7
psrld $25,%xmm1
por %xmm7,%xmm1
# x1 = shuffle32(x1, MASK(0, 3, 2, 1))
pshufd $0x39,%xmm1,%xmm1
# x2 = shuffle32(x2, MASK(1, 0, 3, 2))
pshufd $0x4e,%xmm2,%xmm2
# x3 = shuffle32(x3, MASK(2, 1, 0, 3))
pshufd $0x93,%xmm3,%xmm3
# x0 += x1, x3 = rotl32(x3 ^ x0, 16)
paddd %xmm1,%xmm0
pxor %xmm0,%xmm3
pshufb %xmm5,%xmm3
# x2 += x3, x1 = rotl32(x1 ^ x2, 12)
paddd %xmm3,%xmm2
pxor %xmm2,%xmm1
movdqa %xmm1,%xmm6
pslld $12,%xmm6
psrld $20,%xmm1
por %xmm6,%xmm1
# x0 += x1, x3 = rotl32(x3 ^ x0, 8)
paddd %xmm1,%xmm0
pxor %xmm0,%xmm3
pshufb %xmm4,%xmm3
# x2 += x3, x1 = rotl32(x1 ^ x2, 7)
paddd %xmm3,%xmm2
pxor %xmm2,%xmm1
movdqa %xmm1,%xmm7
pslld $7,%xmm7
psrld $25,%xmm1
por %xmm7,%xmm1
# x1 = shuffle32(x1, MASK(2, 1, 0, 3))
pshufd $0x93,%xmm1,%xmm1
# x2 = shuffle32(x2, MASK(1, 0, 3, 2))
pshufd $0x4e,%xmm2,%xmm2
# x3 = shuffle32(x3, MASK(0, 3, 2, 1))
pshufd $0x39,%xmm3,%xmm3
dec %ecx
jnz .Ldoubleround
# o0 = i0 ^ (x0 + s0)
movdqu 0x00(%rdx),%xmm4
paddd %xmm8,%xmm0
pxor %xmm4,%xmm0
movdqu %xmm0,0x00(%rsi)
# o1 = i1 ^ (x1 + s1)
movdqu 0x10(%rdx),%xmm5
paddd %xmm9,%xmm1
pxor %xmm5,%xmm1
movdqu %xmm1,0x10(%rsi)
# o2 = i2 ^ (x2 + s2)
movdqu 0x20(%rdx),%xmm6
paddd %xmm10,%xmm2
pxor %xmm6,%xmm2
movdqu %xmm2,0x20(%rsi)
# o3 = i3 ^ (x3 + s3)
movdqu 0x30(%rdx),%xmm7
paddd %xmm11,%xmm3
pxor %xmm7,%xmm3
movdqu %xmm3,0x30(%rsi)
ret
ENDPROC(chacha20_block_xor_ssse3)
crypto: chacha20 - Add a four block SSSE3 variant for x86_64 Extends the x86_64 SSSE3 ChaCha20 implementation by a function processing four ChaCha20 blocks in parallel. This avoids the word shuffling needed in the single block variant, further increasing throughput. For large messages, throughput increases by ~110% compared to single block SSSE3: testing speed of chacha20 (chacha20-simd) encryption test 0 (256 bit key, 16 byte blocks): 43141886 operations in 10 seconds (690270176 bytes) test 1 (256 bit key, 64 byte blocks): 46845874 operations in 10 seconds (2998135936 bytes) test 2 (256 bit key, 256 byte blocks): 18458512 operations in 10 seconds (4725379072 bytes) test 3 (256 bit key, 1024 byte blocks): 5360533 operations in 10 seconds (5489185792 bytes) test 4 (256 bit key, 8192 byte blocks): 692846 operations in 10 seconds (5675794432 bytes) testing speed of chacha20 (chacha20-simd) encryption test 0 (256 bit key, 16 byte blocks): 42249230 operations in 10 seconds (675987680 bytes) test 1 (256 bit key, 64 byte blocks): 46441641 operations in 10 seconds (2972265024 bytes) test 2 (256 bit key, 256 byte blocks): 33028112 operations in 10 seconds (8455196672 bytes) test 3 (256 bit key, 1024 byte blocks): 11568759 operations in 10 seconds (11846409216 bytes) test 4 (256 bit key, 8192 byte blocks): 1448761 operations in 10 seconds (11868250112 bytes) Benchmark results from a Core i5-4670T. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-16 17:14:02 +00:00
ENTRY(chacha20_4block_xor_ssse3)
# %rdi: Input state matrix, s
# %rsi: 4 data blocks output, o
# %rdx: 4 data blocks input, i
# This function encrypts four consecutive ChaCha20 blocks by loading the
# the state matrix in SSE registers four times. As we need some scratch
# registers, we save the first four registers on the stack. The
# algorithm performs each operation on the corresponding word of each
# state matrix, hence requires no word shuffling. For final XORing step
# we transpose the matrix by interleaving 32- and then 64-bit words,
# which allows us to do XOR in SSE registers. 8/16-bit word rotation is
# done with the slightly better performing SSSE3 byte shuffling,
# 7/12-bit word rotation uses traditional shift+OR.
sub $0x40,%rsp
# x0..15[0-3] = s0..3[0..3]
movq 0x00(%rdi),%xmm1
pshufd $0x00,%xmm1,%xmm0
pshufd $0x55,%xmm1,%xmm1
movq 0x08(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
movq 0x10(%rdi),%xmm5
pshufd $0x00,%xmm5,%xmm4
pshufd $0x55,%xmm5,%xmm5
movq 0x18(%rdi),%xmm7
pshufd $0x00,%xmm7,%xmm6
pshufd $0x55,%xmm7,%xmm7
movq 0x20(%rdi),%xmm9
pshufd $0x00,%xmm9,%xmm8
pshufd $0x55,%xmm9,%xmm9
movq 0x28(%rdi),%xmm11
pshufd $0x00,%xmm11,%xmm10
pshufd $0x55,%xmm11,%xmm11
movq 0x30(%rdi),%xmm13
pshufd $0x00,%xmm13,%xmm12
pshufd $0x55,%xmm13,%xmm13
movq 0x38(%rdi),%xmm15
pshufd $0x00,%xmm15,%xmm14
pshufd $0x55,%xmm15,%xmm15
# x0..3 on stack
movdqa %xmm0,0x00(%rsp)
movdqa %xmm1,0x10(%rsp)
movdqa %xmm2,0x20(%rsp)
movdqa %xmm3,0x30(%rsp)
movdqa CTRINC(%rip),%xmm1
movdqa ROT8(%rip),%xmm2
movdqa ROT16(%rip),%xmm3
# x12 += counter values 0-3
paddd %xmm1,%xmm12
mov $10,%ecx
.Ldoubleround4:
# x0 += x4, x12 = rotl32(x12 ^ x0, 16)
movdqa 0x00(%rsp),%xmm0
paddd %xmm4,%xmm0
movdqa %xmm0,0x00(%rsp)
pxor %xmm0,%xmm12
pshufb %xmm3,%xmm12
# x1 += x5, x13 = rotl32(x13 ^ x1, 16)
movdqa 0x10(%rsp),%xmm0
paddd %xmm5,%xmm0
movdqa %xmm0,0x10(%rsp)
pxor %xmm0,%xmm13
pshufb %xmm3,%xmm13
# x2 += x6, x14 = rotl32(x14 ^ x2, 16)
movdqa 0x20(%rsp),%xmm0
paddd %xmm6,%xmm0
movdqa %xmm0,0x20(%rsp)
pxor %xmm0,%xmm14
pshufb %xmm3,%xmm14
# x3 += x7, x15 = rotl32(x15 ^ x3, 16)
movdqa 0x30(%rsp),%xmm0
paddd %xmm7,%xmm0
movdqa %xmm0,0x30(%rsp)
pxor %xmm0,%xmm15
pshufb %xmm3,%xmm15
# x8 += x12, x4 = rotl32(x4 ^ x8, 12)
paddd %xmm12,%xmm8
pxor %xmm8,%xmm4
movdqa %xmm4,%xmm0
pslld $12,%xmm0
psrld $20,%xmm4
por %xmm0,%xmm4
# x9 += x13, x5 = rotl32(x5 ^ x9, 12)
paddd %xmm13,%xmm9
pxor %xmm9,%xmm5
movdqa %xmm5,%xmm0
pslld $12,%xmm0
psrld $20,%xmm5
por %xmm0,%xmm5
# x10 += x14, x6 = rotl32(x6 ^ x10, 12)
paddd %xmm14,%xmm10
pxor %xmm10,%xmm6
movdqa %xmm6,%xmm0
pslld $12,%xmm0
psrld $20,%xmm6
por %xmm0,%xmm6
# x11 += x15, x7 = rotl32(x7 ^ x11, 12)
paddd %xmm15,%xmm11
pxor %xmm11,%xmm7
movdqa %xmm7,%xmm0
pslld $12,%xmm0
psrld $20,%xmm7
por %xmm0,%xmm7
# x0 += x4, x12 = rotl32(x12 ^ x0, 8)
movdqa 0x00(%rsp),%xmm0
paddd %xmm4,%xmm0
movdqa %xmm0,0x00(%rsp)
pxor %xmm0,%xmm12
pshufb %xmm2,%xmm12
# x1 += x5, x13 = rotl32(x13 ^ x1, 8)
movdqa 0x10(%rsp),%xmm0
paddd %xmm5,%xmm0
movdqa %xmm0,0x10(%rsp)
pxor %xmm0,%xmm13
pshufb %xmm2,%xmm13
# x2 += x6, x14 = rotl32(x14 ^ x2, 8)
movdqa 0x20(%rsp),%xmm0
paddd %xmm6,%xmm0
movdqa %xmm0,0x20(%rsp)
pxor %xmm0,%xmm14
pshufb %xmm2,%xmm14
# x3 += x7, x15 = rotl32(x15 ^ x3, 8)
movdqa 0x30(%rsp),%xmm0
paddd %xmm7,%xmm0
movdqa %xmm0,0x30(%rsp)
pxor %xmm0,%xmm15
pshufb %xmm2,%xmm15
# x8 += x12, x4 = rotl32(x4 ^ x8, 7)
paddd %xmm12,%xmm8
pxor %xmm8,%xmm4
movdqa %xmm4,%xmm0
pslld $7,%xmm0
psrld $25,%xmm4
por %xmm0,%xmm4
# x9 += x13, x5 = rotl32(x5 ^ x9, 7)
paddd %xmm13,%xmm9
pxor %xmm9,%xmm5
movdqa %xmm5,%xmm0
pslld $7,%xmm0
psrld $25,%xmm5
por %xmm0,%xmm5
# x10 += x14, x6 = rotl32(x6 ^ x10, 7)
paddd %xmm14,%xmm10
pxor %xmm10,%xmm6
movdqa %xmm6,%xmm0
pslld $7,%xmm0
psrld $25,%xmm6
por %xmm0,%xmm6
# x11 += x15, x7 = rotl32(x7 ^ x11, 7)
paddd %xmm15,%xmm11
pxor %xmm11,%xmm7
movdqa %xmm7,%xmm0
pslld $7,%xmm0
psrld $25,%xmm7
por %xmm0,%xmm7
# x0 += x5, x15 = rotl32(x15 ^ x0, 16)
movdqa 0x00(%rsp),%xmm0
paddd %xmm5,%xmm0
movdqa %xmm0,0x00(%rsp)
pxor %xmm0,%xmm15
pshufb %xmm3,%xmm15
# x1 += x6, x12 = rotl32(x12 ^ x1, 16)
movdqa 0x10(%rsp),%xmm0
paddd %xmm6,%xmm0
movdqa %xmm0,0x10(%rsp)
pxor %xmm0,%xmm12
pshufb %xmm3,%xmm12
# x2 += x7, x13 = rotl32(x13 ^ x2, 16)
movdqa 0x20(%rsp),%xmm0
paddd %xmm7,%xmm0
movdqa %xmm0,0x20(%rsp)
pxor %xmm0,%xmm13
pshufb %xmm3,%xmm13
# x3 += x4, x14 = rotl32(x14 ^ x3, 16)
movdqa 0x30(%rsp),%xmm0
paddd %xmm4,%xmm0
movdqa %xmm0,0x30(%rsp)
pxor %xmm0,%xmm14
pshufb %xmm3,%xmm14
# x10 += x15, x5 = rotl32(x5 ^ x10, 12)
paddd %xmm15,%xmm10
pxor %xmm10,%xmm5
movdqa %xmm5,%xmm0
pslld $12,%xmm0
psrld $20,%xmm5
por %xmm0,%xmm5
# x11 += x12, x6 = rotl32(x6 ^ x11, 12)
paddd %xmm12,%xmm11
pxor %xmm11,%xmm6
movdqa %xmm6,%xmm0
pslld $12,%xmm0
psrld $20,%xmm6
por %xmm0,%xmm6
# x8 += x13, x7 = rotl32(x7 ^ x8, 12)
paddd %xmm13,%xmm8
pxor %xmm8,%xmm7
movdqa %xmm7,%xmm0
pslld $12,%xmm0
psrld $20,%xmm7
por %xmm0,%xmm7
# x9 += x14, x4 = rotl32(x4 ^ x9, 12)
paddd %xmm14,%xmm9
pxor %xmm9,%xmm4
movdqa %xmm4,%xmm0
pslld $12,%xmm0
psrld $20,%xmm4
por %xmm0,%xmm4
# x0 += x5, x15 = rotl32(x15 ^ x0, 8)
movdqa 0x00(%rsp),%xmm0
paddd %xmm5,%xmm0
movdqa %xmm0,0x00(%rsp)
pxor %xmm0,%xmm15
pshufb %xmm2,%xmm15
# x1 += x6, x12 = rotl32(x12 ^ x1, 8)
movdqa 0x10(%rsp),%xmm0
paddd %xmm6,%xmm0
movdqa %xmm0,0x10(%rsp)
pxor %xmm0,%xmm12
pshufb %xmm2,%xmm12
# x2 += x7, x13 = rotl32(x13 ^ x2, 8)
movdqa 0x20(%rsp),%xmm0
paddd %xmm7,%xmm0
movdqa %xmm0,0x20(%rsp)
pxor %xmm0,%xmm13
pshufb %xmm2,%xmm13
# x3 += x4, x14 = rotl32(x14 ^ x3, 8)
movdqa 0x30(%rsp),%xmm0
paddd %xmm4,%xmm0
movdqa %xmm0,0x30(%rsp)
pxor %xmm0,%xmm14
pshufb %xmm2,%xmm14
# x10 += x15, x5 = rotl32(x5 ^ x10, 7)
paddd %xmm15,%xmm10
pxor %xmm10,%xmm5
movdqa %xmm5,%xmm0
pslld $7,%xmm0
psrld $25,%xmm5
por %xmm0,%xmm5
# x11 += x12, x6 = rotl32(x6 ^ x11, 7)
paddd %xmm12,%xmm11
pxor %xmm11,%xmm6
movdqa %xmm6,%xmm0
pslld $7,%xmm0
psrld $25,%xmm6
por %xmm0,%xmm6
# x8 += x13, x7 = rotl32(x7 ^ x8, 7)
paddd %xmm13,%xmm8
pxor %xmm8,%xmm7
movdqa %xmm7,%xmm0
pslld $7,%xmm0
psrld $25,%xmm7
por %xmm0,%xmm7
# x9 += x14, x4 = rotl32(x4 ^ x9, 7)
paddd %xmm14,%xmm9
pxor %xmm9,%xmm4
movdqa %xmm4,%xmm0
pslld $7,%xmm0
psrld $25,%xmm4
por %xmm0,%xmm4
dec %ecx
jnz .Ldoubleround4
# x0[0-3] += s0[0]
# x1[0-3] += s0[1]
movq 0x00(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd 0x00(%rsp),%xmm2
movdqa %xmm2,0x00(%rsp)
paddd 0x10(%rsp),%xmm3
movdqa %xmm3,0x10(%rsp)
# x2[0-3] += s0[2]
# x3[0-3] += s0[3]
movq 0x08(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd 0x20(%rsp),%xmm2
movdqa %xmm2,0x20(%rsp)
paddd 0x30(%rsp),%xmm3
movdqa %xmm3,0x30(%rsp)
# x4[0-3] += s1[0]
# x5[0-3] += s1[1]
movq 0x10(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd %xmm2,%xmm4
paddd %xmm3,%xmm5
# x6[0-3] += s1[2]
# x7[0-3] += s1[3]
movq 0x18(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd %xmm2,%xmm6
paddd %xmm3,%xmm7
# x8[0-3] += s2[0]
# x9[0-3] += s2[1]
movq 0x20(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd %xmm2,%xmm8
paddd %xmm3,%xmm9
# x10[0-3] += s2[2]
# x11[0-3] += s2[3]
movq 0x28(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd %xmm2,%xmm10
paddd %xmm3,%xmm11
# x12[0-3] += s3[0]
# x13[0-3] += s3[1]
movq 0x30(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd %xmm2,%xmm12
paddd %xmm3,%xmm13
# x14[0-3] += s3[2]
# x15[0-3] += s3[3]
movq 0x38(%rdi),%xmm3
pshufd $0x00,%xmm3,%xmm2
pshufd $0x55,%xmm3,%xmm3
paddd %xmm2,%xmm14
paddd %xmm3,%xmm15
# x12 += counter values 0-3
paddd %xmm1,%xmm12
# interleave 32-bit words in state n, n+1
movdqa 0x00(%rsp),%xmm0
movdqa 0x10(%rsp),%xmm1
movdqa %xmm0,%xmm2
punpckldq %xmm1,%xmm2
punpckhdq %xmm1,%xmm0
movdqa %xmm2,0x00(%rsp)
movdqa %xmm0,0x10(%rsp)
movdqa 0x20(%rsp),%xmm0
movdqa 0x30(%rsp),%xmm1
movdqa %xmm0,%xmm2
punpckldq %xmm1,%xmm2
punpckhdq %xmm1,%xmm0
movdqa %xmm2,0x20(%rsp)
movdqa %xmm0,0x30(%rsp)
movdqa %xmm4,%xmm0
punpckldq %xmm5,%xmm4
punpckhdq %xmm5,%xmm0
movdqa %xmm0,%xmm5
movdqa %xmm6,%xmm0
punpckldq %xmm7,%xmm6
punpckhdq %xmm7,%xmm0
movdqa %xmm0,%xmm7
movdqa %xmm8,%xmm0
punpckldq %xmm9,%xmm8
punpckhdq %xmm9,%xmm0
movdqa %xmm0,%xmm9
movdqa %xmm10,%xmm0
punpckldq %xmm11,%xmm10
punpckhdq %xmm11,%xmm0
movdqa %xmm0,%xmm11
movdqa %xmm12,%xmm0
punpckldq %xmm13,%xmm12
punpckhdq %xmm13,%xmm0
movdqa %xmm0,%xmm13
movdqa %xmm14,%xmm0
punpckldq %xmm15,%xmm14
punpckhdq %xmm15,%xmm0
movdqa %xmm0,%xmm15
# interleave 64-bit words in state n, n+2
movdqa 0x00(%rsp),%xmm0
movdqa 0x20(%rsp),%xmm1
movdqa %xmm0,%xmm2
punpcklqdq %xmm1,%xmm2
punpckhqdq %xmm1,%xmm0
movdqa %xmm2,0x00(%rsp)
movdqa %xmm0,0x20(%rsp)
movdqa 0x10(%rsp),%xmm0
movdqa 0x30(%rsp),%xmm1
movdqa %xmm0,%xmm2
punpcklqdq %xmm1,%xmm2
punpckhqdq %xmm1,%xmm0
movdqa %xmm2,0x10(%rsp)
movdqa %xmm0,0x30(%rsp)
movdqa %xmm4,%xmm0
punpcklqdq %xmm6,%xmm4
punpckhqdq %xmm6,%xmm0
movdqa %xmm0,%xmm6
movdqa %xmm5,%xmm0
punpcklqdq %xmm7,%xmm5
punpckhqdq %xmm7,%xmm0
movdqa %xmm0,%xmm7
movdqa %xmm8,%xmm0
punpcklqdq %xmm10,%xmm8
punpckhqdq %xmm10,%xmm0
movdqa %xmm0,%xmm10
movdqa %xmm9,%xmm0
punpcklqdq %xmm11,%xmm9
punpckhqdq %xmm11,%xmm0
movdqa %xmm0,%xmm11
movdqa %xmm12,%xmm0
punpcklqdq %xmm14,%xmm12
punpckhqdq %xmm14,%xmm0
movdqa %xmm0,%xmm14
movdqa %xmm13,%xmm0
punpcklqdq %xmm15,%xmm13
punpckhqdq %xmm15,%xmm0
movdqa %xmm0,%xmm15
# xor with corresponding input, write to output
movdqa 0x00(%rsp),%xmm0
movdqu 0x00(%rdx),%xmm1
pxor %xmm1,%xmm0
movdqu %xmm0,0x00(%rsi)
movdqa 0x10(%rsp),%xmm0
movdqu 0x80(%rdx),%xmm1
pxor %xmm1,%xmm0
movdqu %xmm0,0x80(%rsi)
movdqa 0x20(%rsp),%xmm0
movdqu 0x40(%rdx),%xmm1
pxor %xmm1,%xmm0
movdqu %xmm0,0x40(%rsi)
movdqa 0x30(%rsp),%xmm0
movdqu 0xc0(%rdx),%xmm1
pxor %xmm1,%xmm0
movdqu %xmm0,0xc0(%rsi)
movdqu 0x10(%rdx),%xmm1
pxor %xmm1,%xmm4
movdqu %xmm4,0x10(%rsi)
movdqu 0x90(%rdx),%xmm1
pxor %xmm1,%xmm5
movdqu %xmm5,0x90(%rsi)
movdqu 0x50(%rdx),%xmm1
pxor %xmm1,%xmm6
movdqu %xmm6,0x50(%rsi)
movdqu 0xd0(%rdx),%xmm1
pxor %xmm1,%xmm7
movdqu %xmm7,0xd0(%rsi)
movdqu 0x20(%rdx),%xmm1
pxor %xmm1,%xmm8
movdqu %xmm8,0x20(%rsi)
movdqu 0xa0(%rdx),%xmm1
pxor %xmm1,%xmm9
movdqu %xmm9,0xa0(%rsi)
movdqu 0x60(%rdx),%xmm1
pxor %xmm1,%xmm10
movdqu %xmm10,0x60(%rsi)
movdqu 0xe0(%rdx),%xmm1
pxor %xmm1,%xmm11
movdqu %xmm11,0xe0(%rsi)
movdqu 0x30(%rdx),%xmm1
pxor %xmm1,%xmm12
movdqu %xmm12,0x30(%rsi)
movdqu 0xb0(%rdx),%xmm1
pxor %xmm1,%xmm13
movdqu %xmm13,0xb0(%rsi)
movdqu 0x70(%rdx),%xmm1
pxor %xmm1,%xmm14
movdqu %xmm14,0x70(%rsi)
movdqu 0xf0(%rdx),%xmm1
pxor %xmm1,%xmm15
movdqu %xmm15,0xf0(%rsi)
add $0x40,%rsp
ret
ENDPROC(chacha20_4block_xor_ssse3)
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