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e183914af0
A lot of asm-optimized routines in arch/x86/crypto/ keep its
constants in .data. This is wrong, they should be on .rodata.
Mnay of these constants are the same in different modules.
For example, 128-bit shuffle mask 0x000102030405060708090A0B0C0D0E0F
exists in at least half a dozen places.
There is a way to let linker merge them and use just one copy.
The rules are as follows: mergeable objects of different sizes
should not share sections. You can't put them all in one .rodata
section, they will lose "mergeability".
GCC puts its mergeable constants in ".rodata.cstSIZE" sections,
or ".rodata.cstSIZE.<object_name>" if -fdata-sections is used.
This patch does the same:
.section .rodata.cst16.SHUF_MASK, "aM", @progbits, 16
It is important that all data in such section consists of
16-byte elements, not larger ones, and there are no implicit
use of one element from another.
When this is not the case, use non-mergeable section:
.section .rodata[.VAR_NAME], "a", @progbits
This reduces .data by ~15 kbytes:
text data bss dec hex filename
11097415 2705840 2630712 16433967 fac32f vmlinux-prev.o
11112095 2690672 2630712 16433479 fac147 vmlinux.o
Merged objects are visible in System.map:
ffffffff81a28810 r POLY
ffffffff81a28810 r POLY
ffffffff81a28820 r TWOONE
ffffffff81a28820 r TWOONE
ffffffff81a28830 r PSHUFFLE_BYTE_FLIP_MASK <- merged regardless of
ffffffff81a28830 r SHUF_MASK <------------- the name difference
ffffffff81a28830 r SHUF_MASK
ffffffff81a28830 r SHUF_MASK
..
ffffffff81a28d00 r K512 <- merged three identical 640-byte tables
ffffffff81a28d00 r K512
ffffffff81a28d00 r K512
Use of object names in section name suffixes is not strictly necessary,
but might help if someday link stage will use garbage collection
to eliminate unused sections (ld --gc-sections).
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Josh Poimboeuf <jpoimboe@redhat.com>
CC: Xiaodong Liu <xiaodong.liu@intel.com>
CC: Megha Dey <megha.dey@intel.com>
CC: linux-crypto@vger.kernel.org
CC: x86@kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
631 lines
14 KiB
ArmAsm
631 lines
14 KiB
ArmAsm
/*
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* ChaCha20 256-bit cipher algorithm, RFC7539, x64 SSSE3 functions
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*
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* Copyright (C) 2015 Martin Willi
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/linkage.h>
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.section .rodata.cst16.ROT8, "aM", @progbits, 16
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.align 16
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ROT8: .octa 0x0e0d0c0f0a09080b0605040702010003
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.section .rodata.cst16.ROT16, "aM", @progbits, 16
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.align 16
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ROT16: .octa 0x0d0c0f0e09080b0a0504070601000302
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.section .rodata.cst16.CTRINC, "aM", @progbits, 16
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.align 16
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CTRINC: .octa 0x00000003000000020000000100000000
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.text
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ENTRY(chacha20_block_xor_ssse3)
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# %rdi: Input state matrix, s
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# %rsi: 1 data block output, o
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# %rdx: 1 data block input, i
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# This function encrypts one ChaCha20 block by loading the state matrix
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# in four SSE registers. It performs matrix operation on four words in
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# parallel, but requireds shuffling to rearrange the words after each
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# round. 8/16-bit word rotation is done with the slightly better
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# performing SSSE3 byte shuffling, 7/12-bit word rotation uses
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# traditional shift+OR.
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# x0..3 = s0..3
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movdqa 0x00(%rdi),%xmm0
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movdqa 0x10(%rdi),%xmm1
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movdqa 0x20(%rdi),%xmm2
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movdqa 0x30(%rdi),%xmm3
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movdqa %xmm0,%xmm8
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movdqa %xmm1,%xmm9
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movdqa %xmm2,%xmm10
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movdqa %xmm3,%xmm11
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movdqa ROT8(%rip),%xmm4
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movdqa ROT16(%rip),%xmm5
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mov $10,%ecx
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.Ldoubleround:
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# x0 += x1, x3 = rotl32(x3 ^ x0, 16)
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paddd %xmm1,%xmm0
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pxor %xmm0,%xmm3
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pshufb %xmm5,%xmm3
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# x2 += x3, x1 = rotl32(x1 ^ x2, 12)
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paddd %xmm3,%xmm2
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pxor %xmm2,%xmm1
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movdqa %xmm1,%xmm6
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pslld $12,%xmm6
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psrld $20,%xmm1
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por %xmm6,%xmm1
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# x0 += x1, x3 = rotl32(x3 ^ x0, 8)
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paddd %xmm1,%xmm0
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pxor %xmm0,%xmm3
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pshufb %xmm4,%xmm3
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# x2 += x3, x1 = rotl32(x1 ^ x2, 7)
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paddd %xmm3,%xmm2
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pxor %xmm2,%xmm1
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movdqa %xmm1,%xmm7
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pslld $7,%xmm7
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psrld $25,%xmm1
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por %xmm7,%xmm1
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# x1 = shuffle32(x1, MASK(0, 3, 2, 1))
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pshufd $0x39,%xmm1,%xmm1
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# x2 = shuffle32(x2, MASK(1, 0, 3, 2))
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pshufd $0x4e,%xmm2,%xmm2
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# x3 = shuffle32(x3, MASK(2, 1, 0, 3))
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pshufd $0x93,%xmm3,%xmm3
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# x0 += x1, x3 = rotl32(x3 ^ x0, 16)
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paddd %xmm1,%xmm0
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pxor %xmm0,%xmm3
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pshufb %xmm5,%xmm3
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# x2 += x3, x1 = rotl32(x1 ^ x2, 12)
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paddd %xmm3,%xmm2
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pxor %xmm2,%xmm1
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movdqa %xmm1,%xmm6
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pslld $12,%xmm6
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psrld $20,%xmm1
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por %xmm6,%xmm1
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# x0 += x1, x3 = rotl32(x3 ^ x0, 8)
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paddd %xmm1,%xmm0
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pxor %xmm0,%xmm3
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pshufb %xmm4,%xmm3
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# x2 += x3, x1 = rotl32(x1 ^ x2, 7)
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paddd %xmm3,%xmm2
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pxor %xmm2,%xmm1
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movdqa %xmm1,%xmm7
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pslld $7,%xmm7
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psrld $25,%xmm1
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por %xmm7,%xmm1
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# x1 = shuffle32(x1, MASK(2, 1, 0, 3))
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pshufd $0x93,%xmm1,%xmm1
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# x2 = shuffle32(x2, MASK(1, 0, 3, 2))
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pshufd $0x4e,%xmm2,%xmm2
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# x3 = shuffle32(x3, MASK(0, 3, 2, 1))
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pshufd $0x39,%xmm3,%xmm3
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dec %ecx
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jnz .Ldoubleround
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# o0 = i0 ^ (x0 + s0)
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movdqu 0x00(%rdx),%xmm4
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paddd %xmm8,%xmm0
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pxor %xmm4,%xmm0
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movdqu %xmm0,0x00(%rsi)
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# o1 = i1 ^ (x1 + s1)
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movdqu 0x10(%rdx),%xmm5
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paddd %xmm9,%xmm1
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pxor %xmm5,%xmm1
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movdqu %xmm1,0x10(%rsi)
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# o2 = i2 ^ (x2 + s2)
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movdqu 0x20(%rdx),%xmm6
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paddd %xmm10,%xmm2
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pxor %xmm6,%xmm2
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movdqu %xmm2,0x20(%rsi)
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# o3 = i3 ^ (x3 + s3)
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movdqu 0x30(%rdx),%xmm7
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paddd %xmm11,%xmm3
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pxor %xmm7,%xmm3
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movdqu %xmm3,0x30(%rsi)
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ret
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ENDPROC(chacha20_block_xor_ssse3)
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ENTRY(chacha20_4block_xor_ssse3)
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# %rdi: Input state matrix, s
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# %rsi: 4 data blocks output, o
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# %rdx: 4 data blocks input, i
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# This function encrypts four consecutive ChaCha20 blocks by loading the
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# the state matrix in SSE registers four times. As we need some scratch
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# registers, we save the first four registers on the stack. The
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# algorithm performs each operation on the corresponding word of each
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# state matrix, hence requires no word shuffling. For final XORing step
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# we transpose the matrix by interleaving 32- and then 64-bit words,
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# which allows us to do XOR in SSE registers. 8/16-bit word rotation is
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# done with the slightly better performing SSSE3 byte shuffling,
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# 7/12-bit word rotation uses traditional shift+OR.
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mov %rsp,%r11
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sub $0x80,%rsp
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and $~63,%rsp
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# x0..15[0-3] = s0..3[0..3]
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movq 0x00(%rdi),%xmm1
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pshufd $0x00,%xmm1,%xmm0
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pshufd $0x55,%xmm1,%xmm1
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movq 0x08(%rdi),%xmm3
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pshufd $0x00,%xmm3,%xmm2
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pshufd $0x55,%xmm3,%xmm3
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movq 0x10(%rdi),%xmm5
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pshufd $0x00,%xmm5,%xmm4
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pshufd $0x55,%xmm5,%xmm5
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movq 0x18(%rdi),%xmm7
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pshufd $0x00,%xmm7,%xmm6
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pshufd $0x55,%xmm7,%xmm7
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movq 0x20(%rdi),%xmm9
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pshufd $0x00,%xmm9,%xmm8
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pshufd $0x55,%xmm9,%xmm9
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movq 0x28(%rdi),%xmm11
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pshufd $0x00,%xmm11,%xmm10
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pshufd $0x55,%xmm11,%xmm11
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movq 0x30(%rdi),%xmm13
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pshufd $0x00,%xmm13,%xmm12
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pshufd $0x55,%xmm13,%xmm13
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movq 0x38(%rdi),%xmm15
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pshufd $0x00,%xmm15,%xmm14
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pshufd $0x55,%xmm15,%xmm15
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# x0..3 on stack
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movdqa %xmm0,0x00(%rsp)
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movdqa %xmm1,0x10(%rsp)
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movdqa %xmm2,0x20(%rsp)
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movdqa %xmm3,0x30(%rsp)
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movdqa CTRINC(%rip),%xmm1
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movdqa ROT8(%rip),%xmm2
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movdqa ROT16(%rip),%xmm3
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# x12 += counter values 0-3
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paddd %xmm1,%xmm12
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mov $10,%ecx
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.Ldoubleround4:
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# x0 += x4, x12 = rotl32(x12 ^ x0, 16)
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movdqa 0x00(%rsp),%xmm0
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paddd %xmm4,%xmm0
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movdqa %xmm0,0x00(%rsp)
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pxor %xmm0,%xmm12
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pshufb %xmm3,%xmm12
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# x1 += x5, x13 = rotl32(x13 ^ x1, 16)
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movdqa 0x10(%rsp),%xmm0
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paddd %xmm5,%xmm0
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movdqa %xmm0,0x10(%rsp)
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pxor %xmm0,%xmm13
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pshufb %xmm3,%xmm13
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# x2 += x6, x14 = rotl32(x14 ^ x2, 16)
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movdqa 0x20(%rsp),%xmm0
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paddd %xmm6,%xmm0
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movdqa %xmm0,0x20(%rsp)
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pxor %xmm0,%xmm14
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pshufb %xmm3,%xmm14
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# x3 += x7, x15 = rotl32(x15 ^ x3, 16)
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movdqa 0x30(%rsp),%xmm0
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paddd %xmm7,%xmm0
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movdqa %xmm0,0x30(%rsp)
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pxor %xmm0,%xmm15
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pshufb %xmm3,%xmm15
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# x8 += x12, x4 = rotl32(x4 ^ x8, 12)
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paddd %xmm12,%xmm8
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pxor %xmm8,%xmm4
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movdqa %xmm4,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm4
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por %xmm0,%xmm4
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# x9 += x13, x5 = rotl32(x5 ^ x9, 12)
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paddd %xmm13,%xmm9
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pxor %xmm9,%xmm5
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movdqa %xmm5,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm5
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por %xmm0,%xmm5
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# x10 += x14, x6 = rotl32(x6 ^ x10, 12)
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paddd %xmm14,%xmm10
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pxor %xmm10,%xmm6
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movdqa %xmm6,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm6
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por %xmm0,%xmm6
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# x11 += x15, x7 = rotl32(x7 ^ x11, 12)
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paddd %xmm15,%xmm11
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pxor %xmm11,%xmm7
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movdqa %xmm7,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm7
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por %xmm0,%xmm7
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# x0 += x4, x12 = rotl32(x12 ^ x0, 8)
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movdqa 0x00(%rsp),%xmm0
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paddd %xmm4,%xmm0
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movdqa %xmm0,0x00(%rsp)
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pxor %xmm0,%xmm12
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pshufb %xmm2,%xmm12
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# x1 += x5, x13 = rotl32(x13 ^ x1, 8)
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movdqa 0x10(%rsp),%xmm0
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paddd %xmm5,%xmm0
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movdqa %xmm0,0x10(%rsp)
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pxor %xmm0,%xmm13
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pshufb %xmm2,%xmm13
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# x2 += x6, x14 = rotl32(x14 ^ x2, 8)
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movdqa 0x20(%rsp),%xmm0
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paddd %xmm6,%xmm0
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movdqa %xmm0,0x20(%rsp)
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pxor %xmm0,%xmm14
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pshufb %xmm2,%xmm14
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# x3 += x7, x15 = rotl32(x15 ^ x3, 8)
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movdqa 0x30(%rsp),%xmm0
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paddd %xmm7,%xmm0
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movdqa %xmm0,0x30(%rsp)
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pxor %xmm0,%xmm15
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pshufb %xmm2,%xmm15
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# x8 += x12, x4 = rotl32(x4 ^ x8, 7)
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paddd %xmm12,%xmm8
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pxor %xmm8,%xmm4
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movdqa %xmm4,%xmm0
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pslld $7,%xmm0
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psrld $25,%xmm4
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por %xmm0,%xmm4
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# x9 += x13, x5 = rotl32(x5 ^ x9, 7)
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paddd %xmm13,%xmm9
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pxor %xmm9,%xmm5
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movdqa %xmm5,%xmm0
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pslld $7,%xmm0
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psrld $25,%xmm5
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por %xmm0,%xmm5
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# x10 += x14, x6 = rotl32(x6 ^ x10, 7)
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paddd %xmm14,%xmm10
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pxor %xmm10,%xmm6
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movdqa %xmm6,%xmm0
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pslld $7,%xmm0
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psrld $25,%xmm6
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por %xmm0,%xmm6
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# x11 += x15, x7 = rotl32(x7 ^ x11, 7)
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paddd %xmm15,%xmm11
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pxor %xmm11,%xmm7
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movdqa %xmm7,%xmm0
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pslld $7,%xmm0
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psrld $25,%xmm7
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por %xmm0,%xmm7
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# x0 += x5, x15 = rotl32(x15 ^ x0, 16)
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movdqa 0x00(%rsp),%xmm0
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paddd %xmm5,%xmm0
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movdqa %xmm0,0x00(%rsp)
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pxor %xmm0,%xmm15
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pshufb %xmm3,%xmm15
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# x1 += x6, x12 = rotl32(x12 ^ x1, 16)
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movdqa 0x10(%rsp),%xmm0
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paddd %xmm6,%xmm0
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movdqa %xmm0,0x10(%rsp)
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pxor %xmm0,%xmm12
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pshufb %xmm3,%xmm12
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# x2 += x7, x13 = rotl32(x13 ^ x2, 16)
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movdqa 0x20(%rsp),%xmm0
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paddd %xmm7,%xmm0
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movdqa %xmm0,0x20(%rsp)
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pxor %xmm0,%xmm13
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pshufb %xmm3,%xmm13
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# x3 += x4, x14 = rotl32(x14 ^ x3, 16)
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movdqa 0x30(%rsp),%xmm0
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paddd %xmm4,%xmm0
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movdqa %xmm0,0x30(%rsp)
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pxor %xmm0,%xmm14
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pshufb %xmm3,%xmm14
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# x10 += x15, x5 = rotl32(x5 ^ x10, 12)
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paddd %xmm15,%xmm10
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pxor %xmm10,%xmm5
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movdqa %xmm5,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm5
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por %xmm0,%xmm5
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# x11 += x12, x6 = rotl32(x6 ^ x11, 12)
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paddd %xmm12,%xmm11
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pxor %xmm11,%xmm6
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movdqa %xmm6,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm6
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por %xmm0,%xmm6
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# x8 += x13, x7 = rotl32(x7 ^ x8, 12)
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paddd %xmm13,%xmm8
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pxor %xmm8,%xmm7
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movdqa %xmm7,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm7
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por %xmm0,%xmm7
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# x9 += x14, x4 = rotl32(x4 ^ x9, 12)
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paddd %xmm14,%xmm9
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pxor %xmm9,%xmm4
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movdqa %xmm4,%xmm0
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pslld $12,%xmm0
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psrld $20,%xmm4
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por %xmm0,%xmm4
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# x0 += x5, x15 = rotl32(x15 ^ x0, 8)
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movdqa 0x00(%rsp),%xmm0
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paddd %xmm5,%xmm0
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movdqa %xmm0,0x00(%rsp)
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pxor %xmm0,%xmm15
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pshufb %xmm2,%xmm15
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# x1 += x6, x12 = rotl32(x12 ^ x1, 8)
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movdqa 0x10(%rsp),%xmm0
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paddd %xmm6,%xmm0
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movdqa %xmm0,0x10(%rsp)
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pxor %xmm0,%xmm12
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pshufb %xmm2,%xmm12
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# x2 += x7, x13 = rotl32(x13 ^ x2, 8)
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movdqa 0x20(%rsp),%xmm0
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paddd %xmm7,%xmm0
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movdqa %xmm0,0x20(%rsp)
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pxor %xmm0,%xmm13
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pshufb %xmm2,%xmm13
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# x3 += x4, x14 = rotl32(x14 ^ x3, 8)
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movdqa 0x30(%rsp),%xmm0
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paddd %xmm4,%xmm0
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movdqa %xmm0,0x30(%rsp)
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pxor %xmm0,%xmm14
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pshufb %xmm2,%xmm14
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# x10 += x15, x5 = rotl32(x5 ^ x10, 7)
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paddd %xmm15,%xmm10
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pxor %xmm10,%xmm5
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movdqa %xmm5,%xmm0
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pslld $7,%xmm0
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psrld $25,%xmm5
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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)
|
|
|
|
mov %r11,%rsp
|
|
ret
|
|
ENDPROC(chacha20_4block_xor_ssse3)
|