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1021 lines
24 KiB
1021 lines
24 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* ChaCha 256-bit cipher algorithm, x64 AVX2 functions |
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* |
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* Copyright (C) 2015 Martin Willi |
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*/ |
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#include <linux/linkage.h> |
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.section .rodata.cst32.ROT8, "aM", @progbits, 32 |
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.align 32 |
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ROT8: .octa 0x0e0d0c0f0a09080b0605040702010003 |
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.octa 0x0e0d0c0f0a09080b0605040702010003 |
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.section .rodata.cst32.ROT16, "aM", @progbits, 32 |
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.align 32 |
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ROT16: .octa 0x0d0c0f0e09080b0a0504070601000302 |
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.octa 0x0d0c0f0e09080b0a0504070601000302 |
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.section .rodata.cst32.CTRINC, "aM", @progbits, 32 |
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.align 32 |
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CTRINC: .octa 0x00000003000000020000000100000000 |
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.octa 0x00000007000000060000000500000004 |
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.section .rodata.cst32.CTR2BL, "aM", @progbits, 32 |
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.align 32 |
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CTR2BL: .octa 0x00000000000000000000000000000000 |
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.octa 0x00000000000000000000000000000001 |
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.section .rodata.cst32.CTR4BL, "aM", @progbits, 32 |
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.align 32 |
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CTR4BL: .octa 0x00000000000000000000000000000002 |
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.octa 0x00000000000000000000000000000003 |
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.text |
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SYM_FUNC_START(chacha_2block_xor_avx2) |
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# %rdi: Input state matrix, s |
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# %rsi: up to 2 data blocks output, o |
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# %rdx: up to 2 data blocks input, i |
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# %rcx: input/output length in bytes |
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# %r8d: nrounds |
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# This function encrypts two ChaCha blocks by loading the state |
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# matrix twice across four AVX registers. It performs matrix operations |
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# on four words in each matrix in parallel, but requires shuffling to |
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# rearrange the words after each round. |
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vzeroupper |
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# x0..3[0-2] = s0..3 |
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vbroadcasti128 0x00(%rdi),%ymm0 |
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vbroadcasti128 0x10(%rdi),%ymm1 |
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vbroadcasti128 0x20(%rdi),%ymm2 |
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vbroadcasti128 0x30(%rdi),%ymm3 |
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vpaddd CTR2BL(%rip),%ymm3,%ymm3 |
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vmovdqa %ymm0,%ymm8 |
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vmovdqa %ymm1,%ymm9 |
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vmovdqa %ymm2,%ymm10 |
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vmovdqa %ymm3,%ymm11 |
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vmovdqa ROT8(%rip),%ymm4 |
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vmovdqa ROT16(%rip),%ymm5 |
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mov %rcx,%rax |
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.Ldoubleround: |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 16) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm5,%ymm3,%ymm3 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 12) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm6 |
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vpslld $12,%ymm6,%ymm6 |
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vpsrld $20,%ymm1,%ymm1 |
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vpor %ymm6,%ymm1,%ymm1 |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 8) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm4,%ymm3,%ymm3 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 7) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm7 |
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vpslld $7,%ymm7,%ymm7 |
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vpsrld $25,%ymm1,%ymm1 |
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vpor %ymm7,%ymm1,%ymm1 |
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# x1 = shuffle32(x1, MASK(0, 3, 2, 1)) |
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vpshufd $0x39,%ymm1,%ymm1 |
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# x2 = shuffle32(x2, MASK(1, 0, 3, 2)) |
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vpshufd $0x4e,%ymm2,%ymm2 |
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# x3 = shuffle32(x3, MASK(2, 1, 0, 3)) |
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vpshufd $0x93,%ymm3,%ymm3 |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 16) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm5,%ymm3,%ymm3 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 12) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm6 |
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vpslld $12,%ymm6,%ymm6 |
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vpsrld $20,%ymm1,%ymm1 |
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vpor %ymm6,%ymm1,%ymm1 |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 8) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm4,%ymm3,%ymm3 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 7) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm7 |
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vpslld $7,%ymm7,%ymm7 |
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vpsrld $25,%ymm1,%ymm1 |
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vpor %ymm7,%ymm1,%ymm1 |
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# x1 = shuffle32(x1, MASK(2, 1, 0, 3)) |
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vpshufd $0x93,%ymm1,%ymm1 |
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# x2 = shuffle32(x2, MASK(1, 0, 3, 2)) |
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vpshufd $0x4e,%ymm2,%ymm2 |
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# x3 = shuffle32(x3, MASK(0, 3, 2, 1)) |
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vpshufd $0x39,%ymm3,%ymm3 |
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sub $2,%r8d |
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jnz .Ldoubleround |
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# o0 = i0 ^ (x0 + s0) |
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vpaddd %ymm8,%ymm0,%ymm7 |
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cmp $0x10,%rax |
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jl .Lxorpart2 |
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vpxor 0x00(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x00(%rsi) |
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vextracti128 $1,%ymm7,%xmm0 |
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# o1 = i1 ^ (x1 + s1) |
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vpaddd %ymm9,%ymm1,%ymm7 |
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cmp $0x20,%rax |
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jl .Lxorpart2 |
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vpxor 0x10(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x10(%rsi) |
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vextracti128 $1,%ymm7,%xmm1 |
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# o2 = i2 ^ (x2 + s2) |
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vpaddd %ymm10,%ymm2,%ymm7 |
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cmp $0x30,%rax |
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jl .Lxorpart2 |
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vpxor 0x20(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x20(%rsi) |
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vextracti128 $1,%ymm7,%xmm2 |
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# o3 = i3 ^ (x3 + s3) |
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vpaddd %ymm11,%ymm3,%ymm7 |
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cmp $0x40,%rax |
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jl .Lxorpart2 |
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vpxor 0x30(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x30(%rsi) |
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vextracti128 $1,%ymm7,%xmm3 |
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# xor and write second block |
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vmovdqa %xmm0,%xmm7 |
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cmp $0x50,%rax |
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jl .Lxorpart2 |
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vpxor 0x40(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x40(%rsi) |
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vmovdqa %xmm1,%xmm7 |
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cmp $0x60,%rax |
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jl .Lxorpart2 |
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vpxor 0x50(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x50(%rsi) |
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vmovdqa %xmm2,%xmm7 |
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cmp $0x70,%rax |
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jl .Lxorpart2 |
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vpxor 0x60(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x60(%rsi) |
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vmovdqa %xmm3,%xmm7 |
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cmp $0x80,%rax |
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jl .Lxorpart2 |
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vpxor 0x70(%rdx),%xmm7,%xmm6 |
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vmovdqu %xmm6,0x70(%rsi) |
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.Ldone2: |
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vzeroupper |
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ret |
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.Lxorpart2: |
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# xor remaining bytes from partial register into output |
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mov %rax,%r9 |
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and $0x0f,%r9 |
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jz .Ldone2 |
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and $~0x0f,%rax |
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mov %rsi,%r11 |
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lea 8(%rsp),%r10 |
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sub $0x10,%rsp |
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and $~31,%rsp |
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lea (%rdx,%rax),%rsi |
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mov %rsp,%rdi |
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mov %r9,%rcx |
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rep movsb |
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vpxor 0x00(%rsp),%xmm7,%xmm7 |
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vmovdqa %xmm7,0x00(%rsp) |
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mov %rsp,%rsi |
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lea (%r11,%rax),%rdi |
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mov %r9,%rcx |
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rep movsb |
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lea -8(%r10),%rsp |
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jmp .Ldone2 |
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SYM_FUNC_END(chacha_2block_xor_avx2) |
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SYM_FUNC_START(chacha_4block_xor_avx2) |
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# %rdi: Input state matrix, s |
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# %rsi: up to 4 data blocks output, o |
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# %rdx: up to 4 data blocks input, i |
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# %rcx: input/output length in bytes |
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# %r8d: nrounds |
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# This function encrypts four ChaCha blocks by loading the state |
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# matrix four times across eight AVX registers. It performs matrix |
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# operations on four words in two matrices in parallel, sequentially |
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# to the operations on the four words of the other two matrices. The |
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# required word shuffling has a rather high latency, we can do the |
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# arithmetic on two matrix-pairs without much slowdown. |
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vzeroupper |
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# x0..3[0-4] = s0..3 |
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vbroadcasti128 0x00(%rdi),%ymm0 |
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vbroadcasti128 0x10(%rdi),%ymm1 |
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vbroadcasti128 0x20(%rdi),%ymm2 |
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vbroadcasti128 0x30(%rdi),%ymm3 |
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vmovdqa %ymm0,%ymm4 |
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vmovdqa %ymm1,%ymm5 |
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vmovdqa %ymm2,%ymm6 |
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vmovdqa %ymm3,%ymm7 |
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vpaddd CTR2BL(%rip),%ymm3,%ymm3 |
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vpaddd CTR4BL(%rip),%ymm7,%ymm7 |
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vmovdqa %ymm0,%ymm11 |
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vmovdqa %ymm1,%ymm12 |
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vmovdqa %ymm2,%ymm13 |
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vmovdqa %ymm3,%ymm14 |
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vmovdqa %ymm7,%ymm15 |
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vmovdqa ROT8(%rip),%ymm8 |
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vmovdqa ROT16(%rip),%ymm9 |
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mov %rcx,%rax |
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.Ldoubleround4: |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 16) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm9,%ymm3,%ymm3 |
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vpaddd %ymm5,%ymm4,%ymm4 |
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vpxor %ymm4,%ymm7,%ymm7 |
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vpshufb %ymm9,%ymm7,%ymm7 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 12) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm10 |
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vpslld $12,%ymm10,%ymm10 |
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vpsrld $20,%ymm1,%ymm1 |
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vpor %ymm10,%ymm1,%ymm1 |
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vpaddd %ymm7,%ymm6,%ymm6 |
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vpxor %ymm6,%ymm5,%ymm5 |
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vmovdqa %ymm5,%ymm10 |
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vpslld $12,%ymm10,%ymm10 |
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vpsrld $20,%ymm5,%ymm5 |
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vpor %ymm10,%ymm5,%ymm5 |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 8) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm8,%ymm3,%ymm3 |
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vpaddd %ymm5,%ymm4,%ymm4 |
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vpxor %ymm4,%ymm7,%ymm7 |
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vpshufb %ymm8,%ymm7,%ymm7 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 7) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm10 |
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vpslld $7,%ymm10,%ymm10 |
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vpsrld $25,%ymm1,%ymm1 |
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vpor %ymm10,%ymm1,%ymm1 |
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vpaddd %ymm7,%ymm6,%ymm6 |
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vpxor %ymm6,%ymm5,%ymm5 |
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vmovdqa %ymm5,%ymm10 |
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vpslld $7,%ymm10,%ymm10 |
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vpsrld $25,%ymm5,%ymm5 |
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vpor %ymm10,%ymm5,%ymm5 |
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# x1 = shuffle32(x1, MASK(0, 3, 2, 1)) |
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vpshufd $0x39,%ymm1,%ymm1 |
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vpshufd $0x39,%ymm5,%ymm5 |
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# x2 = shuffle32(x2, MASK(1, 0, 3, 2)) |
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vpshufd $0x4e,%ymm2,%ymm2 |
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vpshufd $0x4e,%ymm6,%ymm6 |
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# x3 = shuffle32(x3, MASK(2, 1, 0, 3)) |
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vpshufd $0x93,%ymm3,%ymm3 |
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vpshufd $0x93,%ymm7,%ymm7 |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 16) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm9,%ymm3,%ymm3 |
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vpaddd %ymm5,%ymm4,%ymm4 |
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vpxor %ymm4,%ymm7,%ymm7 |
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vpshufb %ymm9,%ymm7,%ymm7 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 12) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm10 |
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vpslld $12,%ymm10,%ymm10 |
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vpsrld $20,%ymm1,%ymm1 |
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vpor %ymm10,%ymm1,%ymm1 |
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vpaddd %ymm7,%ymm6,%ymm6 |
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vpxor %ymm6,%ymm5,%ymm5 |
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vmovdqa %ymm5,%ymm10 |
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vpslld $12,%ymm10,%ymm10 |
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vpsrld $20,%ymm5,%ymm5 |
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vpor %ymm10,%ymm5,%ymm5 |
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# x0 += x1, x3 = rotl32(x3 ^ x0, 8) |
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vpaddd %ymm1,%ymm0,%ymm0 |
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vpxor %ymm0,%ymm3,%ymm3 |
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vpshufb %ymm8,%ymm3,%ymm3 |
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vpaddd %ymm5,%ymm4,%ymm4 |
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vpxor %ymm4,%ymm7,%ymm7 |
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vpshufb %ymm8,%ymm7,%ymm7 |
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# x2 += x3, x1 = rotl32(x1 ^ x2, 7) |
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vpaddd %ymm3,%ymm2,%ymm2 |
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vpxor %ymm2,%ymm1,%ymm1 |
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vmovdqa %ymm1,%ymm10 |
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vpslld $7,%ymm10,%ymm10 |
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vpsrld $25,%ymm1,%ymm1 |
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vpor %ymm10,%ymm1,%ymm1 |
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vpaddd %ymm7,%ymm6,%ymm6 |
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vpxor %ymm6,%ymm5,%ymm5 |
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vmovdqa %ymm5,%ymm10 |
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vpslld $7,%ymm10,%ymm10 |
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vpsrld $25,%ymm5,%ymm5 |
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vpor %ymm10,%ymm5,%ymm5 |
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# x1 = shuffle32(x1, MASK(2, 1, 0, 3)) |
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vpshufd $0x93,%ymm1,%ymm1 |
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vpshufd $0x93,%ymm5,%ymm5 |
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# x2 = shuffle32(x2, MASK(1, 0, 3, 2)) |
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vpshufd $0x4e,%ymm2,%ymm2 |
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vpshufd $0x4e,%ymm6,%ymm6 |
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# x3 = shuffle32(x3, MASK(0, 3, 2, 1)) |
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vpshufd $0x39,%ymm3,%ymm3 |
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vpshufd $0x39,%ymm7,%ymm7 |
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sub $2,%r8d |
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jnz .Ldoubleround4 |
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# o0 = i0 ^ (x0 + s0), first block |
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vpaddd %ymm11,%ymm0,%ymm10 |
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cmp $0x10,%rax |
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jl .Lxorpart4 |
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vpxor 0x00(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x00(%rsi) |
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vextracti128 $1,%ymm10,%xmm0 |
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# o1 = i1 ^ (x1 + s1), first block |
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vpaddd %ymm12,%ymm1,%ymm10 |
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cmp $0x20,%rax |
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jl .Lxorpart4 |
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vpxor 0x10(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x10(%rsi) |
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vextracti128 $1,%ymm10,%xmm1 |
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# o2 = i2 ^ (x2 + s2), first block |
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vpaddd %ymm13,%ymm2,%ymm10 |
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cmp $0x30,%rax |
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jl .Lxorpart4 |
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vpxor 0x20(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x20(%rsi) |
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vextracti128 $1,%ymm10,%xmm2 |
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# o3 = i3 ^ (x3 + s3), first block |
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vpaddd %ymm14,%ymm3,%ymm10 |
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cmp $0x40,%rax |
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jl .Lxorpart4 |
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vpxor 0x30(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x30(%rsi) |
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vextracti128 $1,%ymm10,%xmm3 |
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# xor and write second block |
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vmovdqa %xmm0,%xmm10 |
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cmp $0x50,%rax |
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jl .Lxorpart4 |
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vpxor 0x40(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x40(%rsi) |
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vmovdqa %xmm1,%xmm10 |
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cmp $0x60,%rax |
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jl .Lxorpart4 |
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vpxor 0x50(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x50(%rsi) |
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vmovdqa %xmm2,%xmm10 |
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cmp $0x70,%rax |
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jl .Lxorpart4 |
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vpxor 0x60(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x60(%rsi) |
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vmovdqa %xmm3,%xmm10 |
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cmp $0x80,%rax |
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jl .Lxorpart4 |
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vpxor 0x70(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x70(%rsi) |
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# o0 = i0 ^ (x0 + s0), third block |
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vpaddd %ymm11,%ymm4,%ymm10 |
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cmp $0x90,%rax |
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jl .Lxorpart4 |
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vpxor 0x80(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x80(%rsi) |
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vextracti128 $1,%ymm10,%xmm4 |
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# o1 = i1 ^ (x1 + s1), third block |
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vpaddd %ymm12,%ymm5,%ymm10 |
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cmp $0xa0,%rax |
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jl .Lxorpart4 |
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vpxor 0x90(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0x90(%rsi) |
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vextracti128 $1,%ymm10,%xmm5 |
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# o2 = i2 ^ (x2 + s2), third block |
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vpaddd %ymm13,%ymm6,%ymm10 |
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cmp $0xb0,%rax |
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jl .Lxorpart4 |
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vpxor 0xa0(%rdx),%xmm10,%xmm9 |
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vmovdqu %xmm9,0xa0(%rsi) |
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vextracti128 $1,%ymm10,%xmm6 |
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# o3 = i3 ^ (x3 + s3), third block |
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vpaddd %ymm15,%ymm7,%ymm10 |
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cmp $0xc0,%rax |
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jl .Lxorpart4 |
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vpxor 0xb0(%rdx),%xmm10,%xmm9 |
|
vmovdqu %xmm9,0xb0(%rsi) |
|
vextracti128 $1,%ymm10,%xmm7 |
|
|
|
# xor and write fourth block |
|
vmovdqa %xmm4,%xmm10 |
|
cmp $0xd0,%rax |
|
jl .Lxorpart4 |
|
vpxor 0xc0(%rdx),%xmm10,%xmm9 |
|
vmovdqu %xmm9,0xc0(%rsi) |
|
|
|
vmovdqa %xmm5,%xmm10 |
|
cmp $0xe0,%rax |
|
jl .Lxorpart4 |
|
vpxor 0xd0(%rdx),%xmm10,%xmm9 |
|
vmovdqu %xmm9,0xd0(%rsi) |
|
|
|
vmovdqa %xmm6,%xmm10 |
|
cmp $0xf0,%rax |
|
jl .Lxorpart4 |
|
vpxor 0xe0(%rdx),%xmm10,%xmm9 |
|
vmovdqu %xmm9,0xe0(%rsi) |
|
|
|
vmovdqa %xmm7,%xmm10 |
|
cmp $0x100,%rax |
|
jl .Lxorpart4 |
|
vpxor 0xf0(%rdx),%xmm10,%xmm9 |
|
vmovdqu %xmm9,0xf0(%rsi) |
|
|
|
.Ldone4: |
|
vzeroupper |
|
ret |
|
|
|
.Lxorpart4: |
|
# xor remaining bytes from partial register into output |
|
mov %rax,%r9 |
|
and $0x0f,%r9 |
|
jz .Ldone4 |
|
and $~0x0f,%rax |
|
|
|
mov %rsi,%r11 |
|
|
|
lea 8(%rsp),%r10 |
|
sub $0x10,%rsp |
|
and $~31,%rsp |
|
|
|
lea (%rdx,%rax),%rsi |
|
mov %rsp,%rdi |
|
mov %r9,%rcx |
|
rep movsb |
|
|
|
vpxor 0x00(%rsp),%xmm10,%xmm10 |
|
vmovdqa %xmm10,0x00(%rsp) |
|
|
|
mov %rsp,%rsi |
|
lea (%r11,%rax),%rdi |
|
mov %r9,%rcx |
|
rep movsb |
|
|
|
lea -8(%r10),%rsp |
|
jmp .Ldone4 |
|
|
|
SYM_FUNC_END(chacha_4block_xor_avx2) |
|
|
|
SYM_FUNC_START(chacha_8block_xor_avx2) |
|
# %rdi: Input state matrix, s |
|
# %rsi: up to 8 data blocks output, o |
|
# %rdx: up to 8 data blocks input, i |
|
# %rcx: input/output length in bytes |
|
# %r8d: nrounds |
|
|
|
# This function encrypts eight consecutive ChaCha blocks by loading |
|
# the state matrix in AVX registers eight 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-, 64- and then 128-bit |
|
# words, which allows us to do XOR in AVX registers. 8/16-bit word |
|
# rotation is done with the slightly better performing byte shuffling, |
|
# 7/12-bit word rotation uses traditional shift+OR. |
|
|
|
vzeroupper |
|
# 4 * 32 byte stack, 32-byte aligned |
|
lea 8(%rsp),%r10 |
|
and $~31, %rsp |
|
sub $0x80, %rsp |
|
mov %rcx,%rax |
|
|
|
# x0..15[0-7] = s[0..15] |
|
vpbroadcastd 0x00(%rdi),%ymm0 |
|
vpbroadcastd 0x04(%rdi),%ymm1 |
|
vpbroadcastd 0x08(%rdi),%ymm2 |
|
vpbroadcastd 0x0c(%rdi),%ymm3 |
|
vpbroadcastd 0x10(%rdi),%ymm4 |
|
vpbroadcastd 0x14(%rdi),%ymm5 |
|
vpbroadcastd 0x18(%rdi),%ymm6 |
|
vpbroadcastd 0x1c(%rdi),%ymm7 |
|
vpbroadcastd 0x20(%rdi),%ymm8 |
|
vpbroadcastd 0x24(%rdi),%ymm9 |
|
vpbroadcastd 0x28(%rdi),%ymm10 |
|
vpbroadcastd 0x2c(%rdi),%ymm11 |
|
vpbroadcastd 0x30(%rdi),%ymm12 |
|
vpbroadcastd 0x34(%rdi),%ymm13 |
|
vpbroadcastd 0x38(%rdi),%ymm14 |
|
vpbroadcastd 0x3c(%rdi),%ymm15 |
|
# x0..3 on stack |
|
vmovdqa %ymm0,0x00(%rsp) |
|
vmovdqa %ymm1,0x20(%rsp) |
|
vmovdqa %ymm2,0x40(%rsp) |
|
vmovdqa %ymm3,0x60(%rsp) |
|
|
|
vmovdqa CTRINC(%rip),%ymm1 |
|
vmovdqa ROT8(%rip),%ymm2 |
|
vmovdqa ROT16(%rip),%ymm3 |
|
|
|
# x12 += counter values 0-3 |
|
vpaddd %ymm1,%ymm12,%ymm12 |
|
|
|
.Ldoubleround8: |
|
# x0 += x4, x12 = rotl32(x12 ^ x0, 16) |
|
vpaddd 0x00(%rsp),%ymm4,%ymm0 |
|
vmovdqa %ymm0,0x00(%rsp) |
|
vpxor %ymm0,%ymm12,%ymm12 |
|
vpshufb %ymm3,%ymm12,%ymm12 |
|
# x1 += x5, x13 = rotl32(x13 ^ x1, 16) |
|
vpaddd 0x20(%rsp),%ymm5,%ymm0 |
|
vmovdqa %ymm0,0x20(%rsp) |
|
vpxor %ymm0,%ymm13,%ymm13 |
|
vpshufb %ymm3,%ymm13,%ymm13 |
|
# x2 += x6, x14 = rotl32(x14 ^ x2, 16) |
|
vpaddd 0x40(%rsp),%ymm6,%ymm0 |
|
vmovdqa %ymm0,0x40(%rsp) |
|
vpxor %ymm0,%ymm14,%ymm14 |
|
vpshufb %ymm3,%ymm14,%ymm14 |
|
# x3 += x7, x15 = rotl32(x15 ^ x3, 16) |
|
vpaddd 0x60(%rsp),%ymm7,%ymm0 |
|
vmovdqa %ymm0,0x60(%rsp) |
|
vpxor %ymm0,%ymm15,%ymm15 |
|
vpshufb %ymm3,%ymm15,%ymm15 |
|
|
|
# x8 += x12, x4 = rotl32(x4 ^ x8, 12) |
|
vpaddd %ymm12,%ymm8,%ymm8 |
|
vpxor %ymm8,%ymm4,%ymm4 |
|
vpslld $12,%ymm4,%ymm0 |
|
vpsrld $20,%ymm4,%ymm4 |
|
vpor %ymm0,%ymm4,%ymm4 |
|
# x9 += x13, x5 = rotl32(x5 ^ x9, 12) |
|
vpaddd %ymm13,%ymm9,%ymm9 |
|
vpxor %ymm9,%ymm5,%ymm5 |
|
vpslld $12,%ymm5,%ymm0 |
|
vpsrld $20,%ymm5,%ymm5 |
|
vpor %ymm0,%ymm5,%ymm5 |
|
# x10 += x14, x6 = rotl32(x6 ^ x10, 12) |
|
vpaddd %ymm14,%ymm10,%ymm10 |
|
vpxor %ymm10,%ymm6,%ymm6 |
|
vpslld $12,%ymm6,%ymm0 |
|
vpsrld $20,%ymm6,%ymm6 |
|
vpor %ymm0,%ymm6,%ymm6 |
|
# x11 += x15, x7 = rotl32(x7 ^ x11, 12) |
|
vpaddd %ymm15,%ymm11,%ymm11 |
|
vpxor %ymm11,%ymm7,%ymm7 |
|
vpslld $12,%ymm7,%ymm0 |
|
vpsrld $20,%ymm7,%ymm7 |
|
vpor %ymm0,%ymm7,%ymm7 |
|
|
|
# x0 += x4, x12 = rotl32(x12 ^ x0, 8) |
|
vpaddd 0x00(%rsp),%ymm4,%ymm0 |
|
vmovdqa %ymm0,0x00(%rsp) |
|
vpxor %ymm0,%ymm12,%ymm12 |
|
vpshufb %ymm2,%ymm12,%ymm12 |
|
# x1 += x5, x13 = rotl32(x13 ^ x1, 8) |
|
vpaddd 0x20(%rsp),%ymm5,%ymm0 |
|
vmovdqa %ymm0,0x20(%rsp) |
|
vpxor %ymm0,%ymm13,%ymm13 |
|
vpshufb %ymm2,%ymm13,%ymm13 |
|
# x2 += x6, x14 = rotl32(x14 ^ x2, 8) |
|
vpaddd 0x40(%rsp),%ymm6,%ymm0 |
|
vmovdqa %ymm0,0x40(%rsp) |
|
vpxor %ymm0,%ymm14,%ymm14 |
|
vpshufb %ymm2,%ymm14,%ymm14 |
|
# x3 += x7, x15 = rotl32(x15 ^ x3, 8) |
|
vpaddd 0x60(%rsp),%ymm7,%ymm0 |
|
vmovdqa %ymm0,0x60(%rsp) |
|
vpxor %ymm0,%ymm15,%ymm15 |
|
vpshufb %ymm2,%ymm15,%ymm15 |
|
|
|
# x8 += x12, x4 = rotl32(x4 ^ x8, 7) |
|
vpaddd %ymm12,%ymm8,%ymm8 |
|
vpxor %ymm8,%ymm4,%ymm4 |
|
vpslld $7,%ymm4,%ymm0 |
|
vpsrld $25,%ymm4,%ymm4 |
|
vpor %ymm0,%ymm4,%ymm4 |
|
# x9 += x13, x5 = rotl32(x5 ^ x9, 7) |
|
vpaddd %ymm13,%ymm9,%ymm9 |
|
vpxor %ymm9,%ymm5,%ymm5 |
|
vpslld $7,%ymm5,%ymm0 |
|
vpsrld $25,%ymm5,%ymm5 |
|
vpor %ymm0,%ymm5,%ymm5 |
|
# x10 += x14, x6 = rotl32(x6 ^ x10, 7) |
|
vpaddd %ymm14,%ymm10,%ymm10 |
|
vpxor %ymm10,%ymm6,%ymm6 |
|
vpslld $7,%ymm6,%ymm0 |
|
vpsrld $25,%ymm6,%ymm6 |
|
vpor %ymm0,%ymm6,%ymm6 |
|
# x11 += x15, x7 = rotl32(x7 ^ x11, 7) |
|
vpaddd %ymm15,%ymm11,%ymm11 |
|
vpxor %ymm11,%ymm7,%ymm7 |
|
vpslld $7,%ymm7,%ymm0 |
|
vpsrld $25,%ymm7,%ymm7 |
|
vpor %ymm0,%ymm7,%ymm7 |
|
|
|
# x0 += x5, x15 = rotl32(x15 ^ x0, 16) |
|
vpaddd 0x00(%rsp),%ymm5,%ymm0 |
|
vmovdqa %ymm0,0x00(%rsp) |
|
vpxor %ymm0,%ymm15,%ymm15 |
|
vpshufb %ymm3,%ymm15,%ymm15 |
|
# x1 += x6, x12 = rotl32(x12 ^ x1, 16)%ymm0 |
|
vpaddd 0x20(%rsp),%ymm6,%ymm0 |
|
vmovdqa %ymm0,0x20(%rsp) |
|
vpxor %ymm0,%ymm12,%ymm12 |
|
vpshufb %ymm3,%ymm12,%ymm12 |
|
# x2 += x7, x13 = rotl32(x13 ^ x2, 16) |
|
vpaddd 0x40(%rsp),%ymm7,%ymm0 |
|
vmovdqa %ymm0,0x40(%rsp) |
|
vpxor %ymm0,%ymm13,%ymm13 |
|
vpshufb %ymm3,%ymm13,%ymm13 |
|
# x3 += x4, x14 = rotl32(x14 ^ x3, 16) |
|
vpaddd 0x60(%rsp),%ymm4,%ymm0 |
|
vmovdqa %ymm0,0x60(%rsp) |
|
vpxor %ymm0,%ymm14,%ymm14 |
|
vpshufb %ymm3,%ymm14,%ymm14 |
|
|
|
# x10 += x15, x5 = rotl32(x5 ^ x10, 12) |
|
vpaddd %ymm15,%ymm10,%ymm10 |
|
vpxor %ymm10,%ymm5,%ymm5 |
|
vpslld $12,%ymm5,%ymm0 |
|
vpsrld $20,%ymm5,%ymm5 |
|
vpor %ymm0,%ymm5,%ymm5 |
|
# x11 += x12, x6 = rotl32(x6 ^ x11, 12) |
|
vpaddd %ymm12,%ymm11,%ymm11 |
|
vpxor %ymm11,%ymm6,%ymm6 |
|
vpslld $12,%ymm6,%ymm0 |
|
vpsrld $20,%ymm6,%ymm6 |
|
vpor %ymm0,%ymm6,%ymm6 |
|
# x8 += x13, x7 = rotl32(x7 ^ x8, 12) |
|
vpaddd %ymm13,%ymm8,%ymm8 |
|
vpxor %ymm8,%ymm7,%ymm7 |
|
vpslld $12,%ymm7,%ymm0 |
|
vpsrld $20,%ymm7,%ymm7 |
|
vpor %ymm0,%ymm7,%ymm7 |
|
# x9 += x14, x4 = rotl32(x4 ^ x9, 12) |
|
vpaddd %ymm14,%ymm9,%ymm9 |
|
vpxor %ymm9,%ymm4,%ymm4 |
|
vpslld $12,%ymm4,%ymm0 |
|
vpsrld $20,%ymm4,%ymm4 |
|
vpor %ymm0,%ymm4,%ymm4 |
|
|
|
# x0 += x5, x15 = rotl32(x15 ^ x0, 8) |
|
vpaddd 0x00(%rsp),%ymm5,%ymm0 |
|
vmovdqa %ymm0,0x00(%rsp) |
|
vpxor %ymm0,%ymm15,%ymm15 |
|
vpshufb %ymm2,%ymm15,%ymm15 |
|
# x1 += x6, x12 = rotl32(x12 ^ x1, 8) |
|
vpaddd 0x20(%rsp),%ymm6,%ymm0 |
|
vmovdqa %ymm0,0x20(%rsp) |
|
vpxor %ymm0,%ymm12,%ymm12 |
|
vpshufb %ymm2,%ymm12,%ymm12 |
|
# x2 += x7, x13 = rotl32(x13 ^ x2, 8) |
|
vpaddd 0x40(%rsp),%ymm7,%ymm0 |
|
vmovdqa %ymm0,0x40(%rsp) |
|
vpxor %ymm0,%ymm13,%ymm13 |
|
vpshufb %ymm2,%ymm13,%ymm13 |
|
# x3 += x4, x14 = rotl32(x14 ^ x3, 8) |
|
vpaddd 0x60(%rsp),%ymm4,%ymm0 |
|
vmovdqa %ymm0,0x60(%rsp) |
|
vpxor %ymm0,%ymm14,%ymm14 |
|
vpshufb %ymm2,%ymm14,%ymm14 |
|
|
|
# x10 += x15, x5 = rotl32(x5 ^ x10, 7) |
|
vpaddd %ymm15,%ymm10,%ymm10 |
|
vpxor %ymm10,%ymm5,%ymm5 |
|
vpslld $7,%ymm5,%ymm0 |
|
vpsrld $25,%ymm5,%ymm5 |
|
vpor %ymm0,%ymm5,%ymm5 |
|
# x11 += x12, x6 = rotl32(x6 ^ x11, 7) |
|
vpaddd %ymm12,%ymm11,%ymm11 |
|
vpxor %ymm11,%ymm6,%ymm6 |
|
vpslld $7,%ymm6,%ymm0 |
|
vpsrld $25,%ymm6,%ymm6 |
|
vpor %ymm0,%ymm6,%ymm6 |
|
# x8 += x13, x7 = rotl32(x7 ^ x8, 7) |
|
vpaddd %ymm13,%ymm8,%ymm8 |
|
vpxor %ymm8,%ymm7,%ymm7 |
|
vpslld $7,%ymm7,%ymm0 |
|
vpsrld $25,%ymm7,%ymm7 |
|
vpor %ymm0,%ymm7,%ymm7 |
|
# x9 += x14, x4 = rotl32(x4 ^ x9, 7) |
|
vpaddd %ymm14,%ymm9,%ymm9 |
|
vpxor %ymm9,%ymm4,%ymm4 |
|
vpslld $7,%ymm4,%ymm0 |
|
vpsrld $25,%ymm4,%ymm4 |
|
vpor %ymm0,%ymm4,%ymm4 |
|
|
|
sub $2,%r8d |
|
jnz .Ldoubleround8 |
|
|
|
# x0..15[0-3] += s[0..15] |
|
vpbroadcastd 0x00(%rdi),%ymm0 |
|
vpaddd 0x00(%rsp),%ymm0,%ymm0 |
|
vmovdqa %ymm0,0x00(%rsp) |
|
vpbroadcastd 0x04(%rdi),%ymm0 |
|
vpaddd 0x20(%rsp),%ymm0,%ymm0 |
|
vmovdqa %ymm0,0x20(%rsp) |
|
vpbroadcastd 0x08(%rdi),%ymm0 |
|
vpaddd 0x40(%rsp),%ymm0,%ymm0 |
|
vmovdqa %ymm0,0x40(%rsp) |
|
vpbroadcastd 0x0c(%rdi),%ymm0 |
|
vpaddd 0x60(%rsp),%ymm0,%ymm0 |
|
vmovdqa %ymm0,0x60(%rsp) |
|
vpbroadcastd 0x10(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm4,%ymm4 |
|
vpbroadcastd 0x14(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm5,%ymm5 |
|
vpbroadcastd 0x18(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm6,%ymm6 |
|
vpbroadcastd 0x1c(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm7,%ymm7 |
|
vpbroadcastd 0x20(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm8,%ymm8 |
|
vpbroadcastd 0x24(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm9,%ymm9 |
|
vpbroadcastd 0x28(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm10,%ymm10 |
|
vpbroadcastd 0x2c(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm11,%ymm11 |
|
vpbroadcastd 0x30(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm12,%ymm12 |
|
vpbroadcastd 0x34(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm13,%ymm13 |
|
vpbroadcastd 0x38(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm14,%ymm14 |
|
vpbroadcastd 0x3c(%rdi),%ymm0 |
|
vpaddd %ymm0,%ymm15,%ymm15 |
|
|
|
# x12 += counter values 0-3 |
|
vpaddd %ymm1,%ymm12,%ymm12 |
|
|
|
# interleave 32-bit words in state n, n+1 |
|
vmovdqa 0x00(%rsp),%ymm0 |
|
vmovdqa 0x20(%rsp),%ymm1 |
|
vpunpckldq %ymm1,%ymm0,%ymm2 |
|
vpunpckhdq %ymm1,%ymm0,%ymm1 |
|
vmovdqa %ymm2,0x00(%rsp) |
|
vmovdqa %ymm1,0x20(%rsp) |
|
vmovdqa 0x40(%rsp),%ymm0 |
|
vmovdqa 0x60(%rsp),%ymm1 |
|
vpunpckldq %ymm1,%ymm0,%ymm2 |
|
vpunpckhdq %ymm1,%ymm0,%ymm1 |
|
vmovdqa %ymm2,0x40(%rsp) |
|
vmovdqa %ymm1,0x60(%rsp) |
|
vmovdqa %ymm4,%ymm0 |
|
vpunpckldq %ymm5,%ymm0,%ymm4 |
|
vpunpckhdq %ymm5,%ymm0,%ymm5 |
|
vmovdqa %ymm6,%ymm0 |
|
vpunpckldq %ymm7,%ymm0,%ymm6 |
|
vpunpckhdq %ymm7,%ymm0,%ymm7 |
|
vmovdqa %ymm8,%ymm0 |
|
vpunpckldq %ymm9,%ymm0,%ymm8 |
|
vpunpckhdq %ymm9,%ymm0,%ymm9 |
|
vmovdqa %ymm10,%ymm0 |
|
vpunpckldq %ymm11,%ymm0,%ymm10 |
|
vpunpckhdq %ymm11,%ymm0,%ymm11 |
|
vmovdqa %ymm12,%ymm0 |
|
vpunpckldq %ymm13,%ymm0,%ymm12 |
|
vpunpckhdq %ymm13,%ymm0,%ymm13 |
|
vmovdqa %ymm14,%ymm0 |
|
vpunpckldq %ymm15,%ymm0,%ymm14 |
|
vpunpckhdq %ymm15,%ymm0,%ymm15 |
|
|
|
# interleave 64-bit words in state n, n+2 |
|
vmovdqa 0x00(%rsp),%ymm0 |
|
vmovdqa 0x40(%rsp),%ymm2 |
|
vpunpcklqdq %ymm2,%ymm0,%ymm1 |
|
vpunpckhqdq %ymm2,%ymm0,%ymm2 |
|
vmovdqa %ymm1,0x00(%rsp) |
|
vmovdqa %ymm2,0x40(%rsp) |
|
vmovdqa 0x20(%rsp),%ymm0 |
|
vmovdqa 0x60(%rsp),%ymm2 |
|
vpunpcklqdq %ymm2,%ymm0,%ymm1 |
|
vpunpckhqdq %ymm2,%ymm0,%ymm2 |
|
vmovdqa %ymm1,0x20(%rsp) |
|
vmovdqa %ymm2,0x60(%rsp) |
|
vmovdqa %ymm4,%ymm0 |
|
vpunpcklqdq %ymm6,%ymm0,%ymm4 |
|
vpunpckhqdq %ymm6,%ymm0,%ymm6 |
|
vmovdqa %ymm5,%ymm0 |
|
vpunpcklqdq %ymm7,%ymm0,%ymm5 |
|
vpunpckhqdq %ymm7,%ymm0,%ymm7 |
|
vmovdqa %ymm8,%ymm0 |
|
vpunpcklqdq %ymm10,%ymm0,%ymm8 |
|
vpunpckhqdq %ymm10,%ymm0,%ymm10 |
|
vmovdqa %ymm9,%ymm0 |
|
vpunpcklqdq %ymm11,%ymm0,%ymm9 |
|
vpunpckhqdq %ymm11,%ymm0,%ymm11 |
|
vmovdqa %ymm12,%ymm0 |
|
vpunpcklqdq %ymm14,%ymm0,%ymm12 |
|
vpunpckhqdq %ymm14,%ymm0,%ymm14 |
|
vmovdqa %ymm13,%ymm0 |
|
vpunpcklqdq %ymm15,%ymm0,%ymm13 |
|
vpunpckhqdq %ymm15,%ymm0,%ymm15 |
|
|
|
# interleave 128-bit words in state n, n+4 |
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# xor/write first four blocks |
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vmovdqa 0x00(%rsp),%ymm1 |
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vperm2i128 $0x20,%ymm4,%ymm1,%ymm0 |
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cmp $0x0020,%rax |
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jl .Lxorpart8 |
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vpxor 0x0000(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0000(%rsi) |
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vperm2i128 $0x31,%ymm4,%ymm1,%ymm4 |
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vperm2i128 $0x20,%ymm12,%ymm8,%ymm0 |
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cmp $0x0040,%rax |
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jl .Lxorpart8 |
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vpxor 0x0020(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0020(%rsi) |
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vperm2i128 $0x31,%ymm12,%ymm8,%ymm12 |
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vmovdqa 0x40(%rsp),%ymm1 |
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vperm2i128 $0x20,%ymm6,%ymm1,%ymm0 |
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cmp $0x0060,%rax |
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jl .Lxorpart8 |
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vpxor 0x0040(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0040(%rsi) |
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vperm2i128 $0x31,%ymm6,%ymm1,%ymm6 |
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vperm2i128 $0x20,%ymm14,%ymm10,%ymm0 |
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cmp $0x0080,%rax |
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jl .Lxorpart8 |
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vpxor 0x0060(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0060(%rsi) |
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vperm2i128 $0x31,%ymm14,%ymm10,%ymm14 |
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vmovdqa 0x20(%rsp),%ymm1 |
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vperm2i128 $0x20,%ymm5,%ymm1,%ymm0 |
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cmp $0x00a0,%rax |
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jl .Lxorpart8 |
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vpxor 0x0080(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0080(%rsi) |
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vperm2i128 $0x31,%ymm5,%ymm1,%ymm5 |
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vperm2i128 $0x20,%ymm13,%ymm9,%ymm0 |
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cmp $0x00c0,%rax |
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jl .Lxorpart8 |
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vpxor 0x00a0(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x00a0(%rsi) |
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vperm2i128 $0x31,%ymm13,%ymm9,%ymm13 |
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vmovdqa 0x60(%rsp),%ymm1 |
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vperm2i128 $0x20,%ymm7,%ymm1,%ymm0 |
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cmp $0x00e0,%rax |
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jl .Lxorpart8 |
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vpxor 0x00c0(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x00c0(%rsi) |
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vperm2i128 $0x31,%ymm7,%ymm1,%ymm7 |
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vperm2i128 $0x20,%ymm15,%ymm11,%ymm0 |
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cmp $0x0100,%rax |
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jl .Lxorpart8 |
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vpxor 0x00e0(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x00e0(%rsi) |
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vperm2i128 $0x31,%ymm15,%ymm11,%ymm15 |
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# xor remaining blocks, write to output |
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vmovdqa %ymm4,%ymm0 |
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cmp $0x0120,%rax |
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jl .Lxorpart8 |
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vpxor 0x0100(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0100(%rsi) |
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vmovdqa %ymm12,%ymm0 |
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cmp $0x0140,%rax |
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jl .Lxorpart8 |
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vpxor 0x0120(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0120(%rsi) |
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vmovdqa %ymm6,%ymm0 |
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cmp $0x0160,%rax |
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jl .Lxorpart8 |
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vpxor 0x0140(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0140(%rsi) |
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vmovdqa %ymm14,%ymm0 |
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cmp $0x0180,%rax |
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jl .Lxorpart8 |
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vpxor 0x0160(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0160(%rsi) |
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vmovdqa %ymm5,%ymm0 |
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cmp $0x01a0,%rax |
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jl .Lxorpart8 |
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vpxor 0x0180(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x0180(%rsi) |
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vmovdqa %ymm13,%ymm0 |
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cmp $0x01c0,%rax |
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jl .Lxorpart8 |
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vpxor 0x01a0(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x01a0(%rsi) |
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vmovdqa %ymm7,%ymm0 |
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cmp $0x01e0,%rax |
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jl .Lxorpart8 |
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vpxor 0x01c0(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x01c0(%rsi) |
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vmovdqa %ymm15,%ymm0 |
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cmp $0x0200,%rax |
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jl .Lxorpart8 |
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vpxor 0x01e0(%rdx),%ymm0,%ymm0 |
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vmovdqu %ymm0,0x01e0(%rsi) |
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.Ldone8: |
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vzeroupper |
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lea -8(%r10),%rsp |
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ret |
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.Lxorpart8: |
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# xor remaining bytes from partial register into output |
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mov %rax,%r9 |
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and $0x1f,%r9 |
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jz .Ldone8 |
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and $~0x1f,%rax |
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mov %rsi,%r11 |
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lea (%rdx,%rax),%rsi |
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mov %rsp,%rdi |
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mov %r9,%rcx |
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rep movsb |
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vpxor 0x00(%rsp),%ymm0,%ymm0 |
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vmovdqa %ymm0,0x00(%rsp) |
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mov %rsp,%rsi |
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lea (%r11,%rax),%rdi |
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mov %r9,%rcx |
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rep movsb |
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jmp .Ldone8 |
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SYM_FUNC_END(chacha_8block_xor_avx2)
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