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It performs matrix operations # on four words in each matrix in parallel, but requires shuffling to # rearrange the words after each round. vzeroupper # x0..3[0-2] = s0..3 vbroadcasti128 0x00(%rdi),%ymm0 vbroadcasti128 0x10(%rdi),%ymm1 vbroadcasti128 0x20(%rdi),%ymm2 vbroadcasti128 0x30(%rdi),%ymm3 vpaddd CTR2BL(%rip),%ymm3,%ymm3 vmovdqa %ymm0,%ymm8 vmovdqa %ymm1,%ymm9 vmovdqa %ymm2,%ymm10 vmovdqa %ymm3,%ymm11 .Ldoubleround: # x0 += x1, x3 = rotl32(x3 ^ x0, 16) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $16,%ymm3,%ymm3 # x2 += x3, x1 = rotl32(x1 ^ x2, 12) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $12,%ymm1,%ymm1 # x0 += x1, x3 = rotl32(x3 ^ x0, 8) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $8,%ymm3,%ymm3 # x2 += x3, x1 = rotl32(x1 ^ x2, 7) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $7,%ymm1,%ymm1 # x1 = shuffle32(x1, MASK(0, 3, 2, 1)) vpshufd $0x39,%ymm1,%ymm1 # x2 = shuffle32(x2, MASK(1, 0, 3, 2)) vpshufd $0x4e,%ymm2,%ymm2 # x3 = shuffle32(x3, MASK(2, 1, 0, 3)) vpshufd $0x93,%ymm3,%ymm3 # x0 += x1, x3 = rotl32(x3 ^ x0, 16) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $16,%ymm3,%ymm3 # x2 += x3, x1 = rotl32(x1 ^ x2, 12) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $12,%ymm1,%ymm1 # x0 += x1, x3 = rotl32(x3 ^ x0, 8) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $8,%ymm3,%ymm3 # x2 += x3, x1 = rotl32(x1 ^ x2, 7) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $7,%ymm1,%ymm1 # x1 = shuffle32(x1, MASK(2, 1, 0, 3)) vpshufd $0x93,%ymm1,%ymm1 # x2 = shuffle32(x2, MASK(1, 0, 3, 2)) vpshufd $0x4e,%ymm2,%ymm2 # x3 = shuffle32(x3, MASK(0, 3, 2, 1)) vpshufd $0x39,%ymm3,%ymm3 sub $2,%r8d jnz .Ldoubleround # o0 = i0 ^ (x0 + s0) vpaddd %ymm8,%ymm0,%ymm7 cmp $0x10,%rcx jl .Lxorpart2 vpxord 0x00(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x00(%rsi) vextracti128 $1,%ymm7,%xmm0 # o1 = i1 ^ (x1 + s1) vpaddd %ymm9,%ymm1,%ymm7 cmp $0x20,%rcx jl .Lxorpart2 vpxord 0x10(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x10(%rsi) vextracti128 $1,%ymm7,%xmm1 # o2 = i2 ^ (x2 + s2) vpaddd %ymm10,%ymm2,%ymm7 cmp $0x30,%rcx jl .Lxorpart2 vpxord 0x20(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x20(%rsi) vextracti128 $1,%ymm7,%xmm2 # o3 = i3 ^ (x3 + s3) vpaddd %ymm11,%ymm3,%ymm7 cmp $0x40,%rcx jl .Lxorpart2 vpxord 0x30(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x30(%rsi) vextracti128 $1,%ymm7,%xmm3 # xor and write second block vmovdqa %xmm0,%xmm7 cmp $0x50,%rcx jl .Lxorpart2 vpxord 0x40(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x40(%rsi) vmovdqa %xmm1,%xmm7 cmp $0x60,%rcx jl .Lxorpart2 vpxord 0x50(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x50(%rsi) vmovdqa %xmm2,%xmm7 cmp $0x70,%rcx jl .Lxorpart2 vpxord 0x60(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x60(%rsi) vmovdqa %xmm3,%xmm7 cmp $0x80,%rcx jl .Lxorpart2 vpxord 0x70(%rdx),%xmm7,%xmm6 vmovdqu %xmm6,0x70(%rsi) .Ldone2: vzeroupper RET .Lxorpart2: # xor remaining bytes from partial register into output mov %rcx,%rax and $0xf,%rcx jz .Ldone2 mov %rax,%r9 and $~0xf,%r9 mov $1,%rax shld %cl,%rax,%rax sub $1,%rax kmovq %rax,%k1 vmovdqu8 (%rdx,%r9),%xmm1{%k1}{z} vpxord %xmm7,%xmm1,%xmm1 vmovdqu8 %xmm1,(%rsi,%r9){%k1} jmp .Ldone2 SYM_FUNC_END(chacha_2block_xor_avx512vl) SYM_FUNC_START(chacha_4block_xor_avx512vl) # %rdi: Input state matrix, s # %rsi: up to 4 data blocks output, o # %rdx: up to 4 data blocks input, i # %rcx: input/output length in bytes # %r8d: nrounds # This function encrypts four ChaCha blocks by loading the state # matrix four times across eight AVX registers. It performs matrix # operations on four words in two matrices in parallel, sequentially # to the operations on the four words of the other two matrices. The # required word shuffling has a rather high latency, we can do the # arithmetic on two matrix-pairs without much slowdown. vzeroupper # x0..3[0-4] = s0..3 vbroadcasti128 0x00(%rdi),%ymm0 vbroadcasti128 0x10(%rdi),%ymm1 vbroadcasti128 0x20(%rdi),%ymm2 vbroadcasti128 0x30(%rdi),%ymm3 vmovdqa %ymm0,%ymm4 vmovdqa %ymm1,%ymm5 vmovdqa %ymm2,%ymm6 vmovdqa %ymm3,%ymm7 vpaddd CTR2BL(%rip),%ymm3,%ymm3 vpaddd CTR4BL(%rip),%ymm7,%ymm7 vmovdqa %ymm0,%ymm11 vmovdqa %ymm1,%ymm12 vmovdqa %ymm2,%ymm13 vmovdqa %ymm3,%ymm14 vmovdqa %ymm7,%ymm15 .Ldoubleround4: # x0 += x1, x3 = rotl32(x3 ^ x0, 16) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $16,%ymm3,%ymm3 vpaddd %ymm5,%ymm4,%ymm4 vpxord %ymm4,%ymm7,%ymm7 vprold $16,%ymm7,%ymm7 # x2 += x3, x1 = rotl32(x1 ^ x2, 12) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $12,%ymm1,%ymm1 vpaddd %ymm7,%ymm6,%ymm6 vpxord %ymm6,%ymm5,%ymm5 vprold $12,%ymm5,%ymm5 # x0 += x1, x3 = rotl32(x3 ^ x0, 8) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $8,%ymm3,%ymm3 vpaddd %ymm5,%ymm4,%ymm4 vpxord %ymm4,%ymm7,%ymm7 vprold $8,%ymm7,%ymm7 # x2 += x3, x1 = rotl32(x1 ^ x2, 7) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $7,%ymm1,%ymm1 vpaddd %ymm7,%ymm6,%ymm6 vpxord %ymm6,%ymm5,%ymm5 vprold $7,%ymm5,%ymm5 # x1 = shuffle32(x1, MASK(0, 3, 2, 1)) vpshufd $0x39,%ymm1,%ymm1 vpshufd $0x39,%ymm5,%ymm5 # x2 = shuffle32(x2, MASK(1, 0, 3, 2)) vpshufd $0x4e,%ymm2,%ymm2 vpshufd $0x4e,%ymm6,%ymm6 # x3 = shuffle32(x3, MASK(2, 1, 0, 3)) vpshufd $0x93,%ymm3,%ymm3 vpshufd $0x93,%ymm7,%ymm7 # x0 += x1, x3 = rotl32(x3 ^ x0, 16) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $16,%ymm3,%ymm3 vpaddd %ymm5,%ymm4,%ymm4 vpxord %ymm4,%ymm7,%ymm7 vprold $16,%ymm7,%ymm7 # x2 += x3, x1 = rotl32(x1 ^ x2, 12) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $12,%ymm1,%ymm1 vpaddd %ymm7,%ymm6,%ymm6 vpxord %ymm6,%ymm5,%ymm5 vprold $12,%ymm5,%ymm5 # x0 += x1, x3 = rotl32(x3 ^ x0, 8) vpaddd %ymm1,%ymm0,%ymm0 vpxord %ymm0,%ymm3,%ymm3 vprold $8,%ymm3,%ymm3 vpaddd %ymm5,%ymm4,%ymm4 vpxord %ymm4,%ymm7,%ymm7 vprold $8,%ymm7,%ymm7 # x2 += x3, x1 = rotl32(x1 ^ x2, 7) vpaddd %ymm3,%ymm2,%ymm2 vpxord %ymm2,%ymm1,%ymm1 vprold $7,%ymm1,%ymm1 vpaddd %ymm7,%ymm6,%ymm6 vpxord %ymm6,%ymm5,%ymm5 vprold $7,%ymm5,%ymm5 # x1 = shuffle32(x1, MASK(2, 1, 0, 3)) vpshufd $0x93,%ymm1,%ymm1 vpshufd $0x93,%ymm5,%ymm5 # x2 = shuffle32(x2, MASK(1, 0, 3, 2)) vpshufd $0x4e,%ymm2,%ymm2 vpshufd $0x4e,%ymm6,%ymm6 # x3 = shuffle32(x3, MASK(0, 3, 2, 1)) vpshufd $0x39,%ymm3,%ymm3 vpshufd $0x39,%ymm7,%ymm7 sub $2,%r8d jnz .Ldoubleround4 # o0 = i0 ^ (x0 + s0), first block vpaddd %ymm11,%ymm0,%ymm10 cmp $0x10,%rcx jl .Lxorpart4 vpxord 0x00(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x00(%rsi) vextracti128 $1,%ymm10,%xmm0 # o1 = i1 ^ (x1 + s1), first block vpaddd %ymm12,%ymm1,%ymm10 cmp $0x20,%rcx jl .Lxorpart4 vpxord 0x10(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x10(%rsi) vextracti128 $1,%ymm10,%xmm1 # o2 = i2 ^ (x2 + s2), first block vpaddd %ymm13,%ymm2,%ymm10 cmp $0x30,%rcx jl .Lxorpart4 vpxord 0x20(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x20(%rsi) vextracti128 $1,%ymm10,%xmm2 # o3 = i3 ^ (x3 + s3), first block vpaddd %ymm14,%ymm3,%ymm10 cmp $0x40,%rcx jl .Lxorpart4 vpxord 0x30(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x30(%rsi) vextracti128 $1,%ymm10,%xmm3 # xor and write second block vmovdqa %xmm0,%xmm10 cmp $0x50,%rcx jl .Lxorpart4 vpxord 0x40(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x40(%rsi) vmovdqa %xmm1,%xmm10 cmp $0x60,%rcx jl .Lxorpart4 vpxord 0x50(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x50(%rsi) vmovdqa %xmm2,%xmm10 cmp $0x70,%rcx jl .Lxorpart4 vpxord 0x60(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x60(%rsi) vmovdqa %xmm3,%xmm10 cmp $0x80,%rcx jl .Lxorpart4 vpxord 0x70(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x70(%rsi) # o0 = i0 ^ (x0 + s0), third block vpaddd %ymm11,%ymm4,%ymm10 cmp $0x90,%rcx jl .Lxorpart4 vpxord 0x80(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x80(%rsi) vextracti128 $1,%ymm10,%xmm4 # o1 = i1 ^ (x1 + s1), third block vpaddd %ymm12,%ymm5,%ymm10 cmp $0xa0,%rcx jl .Lxorpart4 vpxord 0x90(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0x90(%rsi) vextracti128 $1,%ymm10,%xmm5 # o2 = i2 ^ (x2 + s2), third block vpaddd %ymm13,%ymm6,%ymm10 cmp $0xb0,%rcx jl .Lxorpart4 vpxord 0xa0(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0xa0(%rsi) vextracti128 $1,%ymm10,%xmm6 # o3 = i3 ^ (x3 + s3), third block vpaddd %ymm15,%ymm7,%ymm10 cmp $0xc0,%rcx jl .Lxorpart4 vpxord 0xb0(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0xb0(%rsi) vextracti128 $1,%ymm10,%xmm7 # xor and write fourth block vmovdqa %xmm4,%xmm10 cmp $0xd0,%rcx jl .Lxorpart4 vpxord 0xc0(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0xc0(%rsi) vmovdqa %xmm5,%xmm10 cmp $0xe0,%rcx jl .Lxorpart4 vpxord 0xd0(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0xd0(%rsi) vmovdqa %xmm6,%xmm10 cmp $0xf0,%rcx jl .Lxorpart4 vpxord 0xe0(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0xe0(%rsi) vmovdqa %xmm7,%xmm10 cmp $0x100,%rcx jl .Lxorpart4 vpxord 0xf0(%rdx),%xmm10,%xmm9 vmovdqu %xmm9,0xf0(%rsi) .Ldone4: vzeroupper RET .Lxorpart4: # xor remaining bytes from partial register into output mov %rcx,%rax and $0xf,%rcx jz .Ldone4 mov %rax,%r9 and $~0xf,%r9 mov $1,%rax shld %cl,%rax,%rax sub $1,%rax kmovq %rax,%k1 vmovdqu8 (%rdx,%r9),%xmm1{%k1}{z} vpxord %xmm10,%xmm1,%xmm1 vmovdqu8 %xmm1,(%rsi,%r9){%k1} jmp .Ldone4 SYM_FUNC_END(chacha_4block_xor_avx512vl) SYM_FUNC_START(chacha_8block_xor_avx512vl) # %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. Compared to AVX2, this # mostly benefits from the new rotate instructions in VL and the # additional registers. vzeroupper # 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 # x12 += counter values 0-3 vpaddd CTR8BL(%rip),%ymm12,%ymm12 vmovdqa64 %ymm0,%ymm16 vmovdqa64 %ymm1,%ymm17 vmovdqa64 %ymm2,%ymm18 vmovdqa64 %ymm3,%ymm19 vmovdqa64 %ymm4,%ymm20 vmovdqa64 %ymm5,%ymm21 vmovdqa64 %ymm6,%ymm22 vmovdqa64 %ymm7,%ymm23 vmovdqa64 %ymm8,%ymm24 vmovdqa64 %ymm9,%ymm25 vmovdqa64 %ymm10,%ymm26 vmovdqa64 %ymm11,%ymm27 vmovdqa64 %ymm12,%ymm28 vmovdqa64 %ymm13,%ymm29 vmovdqa64 %ymm14,%ymm30 vmovdqa64 %ymm15,%ymm31 .Ldoubleround8: # x0 += x4, x12 = rotl32(x12 ^ x0, 16) vpaddd %ymm0,%ymm4,%ymm0 vpxord %ymm0,%ymm12,%ymm12 vprold $16,%ymm12,%ymm12 # x1 += x5, x13 = rotl32(x13 ^ x1, 16) vpaddd %ymm1,%ymm5,%ymm1 vpxord %ymm1,%ymm13,%ymm13 vprold $16,%ymm13,%ymm13 # x2 += x6, x14 = rotl32(x14 ^ x2, 16) vpaddd %ymm2,%ymm6,%ymm2 vpxord %ymm2,%ymm14,%ymm14 vprold $16,%ymm14,%ymm14 # x3 += x7, x15 = rotl32(x15 ^ x3, 16) vpaddd %ymm3,%ymm7,%ymm3 vpxord %ymm3,%ymm15,%ymm15 vprold $16,%ymm15,%ymm15 # x8 += x12, x4 = rotl32(x4 ^ x8, 12) vpaddd %ymm12,%ymm8,%ymm8 vpxord %ymm8,%ymm4,%ymm4 vprold $12,%ymm4,%ymm4 # x9 += x13, x5 = rotl32(x5 ^ x9, 12) vpaddd %ymm13,%ymm9,%ymm9 vpxord %ymm9,%ymm5,%ymm5 vprold $12,%ymm5,%ymm5 # x10 += x14, x6 = rotl32(x6 ^ x10, 12) vpaddd %ymm14,%ymm10,%ymm10 vpxord %ymm10,%ymm6,%ymm6 vprold $12,%ymm6,%ymm6 # x11 += x15, x7 = rotl32(x7 ^ x11, 12) vpaddd %ymm15,%ymm11,%ymm11 vpxord %ymm11,%ymm7,%ymm7 vprold $12,%ymm7,%ymm7 # x0 += x4, x12 = rotl32(x12 ^ x0, 8) vpaddd %ymm0,%ymm4,%ymm0 vpxord %ymm0,%ymm12,%ymm12 vprold $8,%ymm12,%ymm12 # x1 += x5, x13 = rotl32(x13 ^ x1, 8) vpaddd %ymm1,%ymm5,%ymm1 vpxord %ymm1,%ymm13,%ymm13 vprold $8,%ymm13,%ymm13 # x2 += x6, x14 = rotl32(x14 ^ x2, 8) vpaddd %ymm2,%ymm6,%ymm2 vpxord %ymm2,%ymm14,%ymm14 vprold $8,%ymm14,%ymm14 # x3 += x7, x15 = rotl32(x15 ^ x3, 8) vpaddd %ymm3,%ymm7,%ymm3 vpxord %ymm3,%ymm15,%ymm15 vprold $8,%ymm15,%ymm15 # x8 += x12, x4 = rotl32(x4 ^ x8, 7) vpaddd %ymm12,%ymm8,%ymm8 vpxord %ymm8,%ymm4,%ymm4 vprold $7,%ymm4,%ymm4 # x9 += x13, x5 = rotl32(x5 ^ x9, 7) vpaddd %ymm13,%ymm9,%ymm9 vpxord %ymm9,%ymm5,%ymm5 vprold $7,%ymm5,%ymm5 # x10 += x14, x6 = rotl32(x6 ^ x10, 7) vpaddd %ymm14,%ymm10,%ymm10 vpxord %ymm10,%ymm6,%ymm6 vprold $7,%ymm6,%ymm6 # x11 += x15, x7 = rotl32(x7 ^ x11, 7) vpaddd %ymm15,%ymm11,%ymm11 vpxord %ymm11,%ymm7,%ymm7 vprold $7,%ymm7,%ymm7 # x0 += x5, x15 = rotl32(x15 ^ x0, 16) vpaddd %ymm0,%ymm5,%ymm0 vpxord %ymm0,%ymm15,%ymm15 vprold $16,%ymm15,%ymm15 # x1 += x6, x12 = rotl32(x12 ^ x1, 16) vpaddd %ymm1,%ymm6,%ymm1 vpxord %ymm1,%ymm12,%ymm12 vprold $16,%ymm12,%ymm12 # x2 += x7, x13 = rotl32(x13 ^ x2, 16) vpaddd %ymm2,%ymm7,%ymm2 vpxord %ymm2,%ymm13,%ymm13 vprold $16,%ymm13,%ymm13 # x3 += x4, x14 = rotl32(x14 ^ x3, 16) vpaddd %ymm3,%ymm4,%ymm3 vpxord %ymm3,%ymm14,%ymm14 vprold $16,%ymm14,%ymm14 # x10 += x15, x5 = rotl32(x5 ^ x10, 12) vpaddd %ymm15,%ymm10,%ymm10 vpxord %ymm10,%ymm5,%ymm5 vprold $12,%ymm5,%ymm5 # x11 += x12, x6 = rotl32(x6 ^ x11, 12) vpaddd %ymm12,%ymm11,%ymm11 vpxord %ymm11,%ymm6,%ymm6 vprold $12,%ymm6,%ymm6 # x8 += x13, x7 = rotl32(x7 ^ x8, 12) vpaddd %ymm13,%ymm8,%ymm8 vpxord %ymm8,%ymm7,%ymm7 vprold $12,%ymm7,%ymm7 # x9 += x14, x4 = rotl32(x4 ^ x9, 12) vpaddd %ymm14,%ymm9,%ymm9 vpxord %ymm9,%ymm4,%ymm4 vprold $12,%ymm4,%ymm4 # x0 += x5, x15 = rotl32(x15 ^ x0, 8) vpaddd %ymm0,%ymm5,%ymm0 vpxord %ymm0,%ymm15,%ymm15 vprold $8,%ymm15,%ymm15 # x1 += x6, x12 = rotl32(x12 ^ x1, 8) vpaddd %ymm1,%ymm6,%ymm1 vpxord %ymm1,%ymm12,%ymm12 vprold $8,%ymm12,%ymm12 # x2 += x7, x13 = rotl32(x13 ^ x2, 8) vpaddd %ymm2,%ymm7,%ymm2 vpxord %ymm2,%ymm13,%ymm13 vprold $8,%ymm13,%ymm13 # x3 += x4, x14 = rotl32(x14 ^ x3, 8) vpaddd %ymm3,%ymm4,%ymm3 vpxord %ymm3,%ymm14,%ymm14 vprold $8,%ymm14,%ymm14 # x10 += x15, x5 = rotl32(x5 ^ x10, 7) vpaddd %ymm15,%ymm10,%ymm10 vpxord %ymm10,%ymm5,%ymm5 vprold $7,%ymm5,%ymm5 # x11 += x12, x6 = rotl32(x6 ^ x11, 7) vpaddd %ymm12,%ymm11,%ymm11 vpxord %ymm11,%ymm6,%ymm6 vprold $7,%ymm6,%ymm6 # x8 += x13, x7 = rotl32(x7 ^ x8, 7) vpaddd %ymm13,%ymm8,%ymm8 vpxord %ymm8,%ymm7,%ymm7 vprold $7,%ymm7,%ymm7 # x9 += x14, x4 = rotl32(x4 ^ x9, 7) vpaddd %ymm14,%ymm9,%ymm9 vpxord %ymm9,%ymm4,%ymm4 vprold $7,%ymm4,%ymm4 sub $2,%r8d jnz .Ldoubleround8 # x0..15[0-3] += s[0..15] vpaddd %ymm16,%ymm0,%ymm0 vpaddd %ymm17,%ymm1,%ymm1 vpaddd %ymm18,%ymm2,%ymm2 vpaddd %ymm19,%ymm3,%ymm3 vpaddd %ymm20,%ymm4,%ymm4 vpaddd %ymm21,%ymm5,%ymm5 vpaddd %ymm22,%ymm6,%ymm6 vpaddd %ymm23,%ymm7,%ymm7 vpaddd %ymm24,%ymm8,%ymm8 vpaddd %ymm25,%ymm9,%ymm9 vpaddd %ymm26,%ymm10,%ymm10 vpaddd %ymm27,%ymm11,%ymm11 vpaddd %ymm28,%ymm12,%ymm12 vpaddd %ymm29,%ymm13,%ymm13 vpaddd %ymm30,%ymm14,%ymm14 vpaddd %ymm31,%ymm15,%ymm15 # interleave 32-bit words in state n, n+1 vpunpckldq %ymm1,%ymm0,%ymm16 vpunpckhdq %ymm1,%ymm0,%ymm17 vpunpckldq %ymm3,%ymm2,%ymm18 vpunpckhdq %ymm3,%ymm2,%ymm19 vpunpckldq %ymm5,%ymm4,%ymm20 vpunpckhdq %ymm5,%ymm4,%ymm21 vpunpckldq %ymm7,%ymm6,%ymm22 vpunpckhdq %ymm7,%ymm6,%ymm23 vpunpckldq %ymm9,%ymm8,%ymm24 vpunpckhdq %ymm9,%ymm8,%ymm25 vpunpckldq %ymm11,%ymm10,%ymm26 vpunpckhdq %ymm11,%ymm10,%ymm27 vpunpckldq %ymm13,%ymm12,%ymm28 vpunpckhdq %ymm13,%ymm12,%ymm29 vpunpckldq %ymm15,%ymm14,%ymm30 vpunpckhdq %ymm15,%ymm14,%ymm31 # interleave 64-bit words in state n, n+2 vpunpcklqdq %ymm18,%ymm16,%ymm0 vpunpcklqdq %ymm19,%ymm17,%ymm1 vpunpckhqdq %ymm18,%ymm16,%ymm2 vpunpckhqdq %ymm19,%ymm17,%ymm3 vpunpcklqdq %ymm22,%ymm20,%ymm4 vpunpcklqdq %ymm23,%ymm21,%ymm5 vpunpckhqdq %ymm22,%ymm20,%ymm6 vpunpckhqdq %ymm23,%ymm21,%ymm7 vpunpcklqdq %ymm26,%ymm24,%ymm8 vpunpcklqdq %ymm27,%ymm25,%ymm9 vpunpckhqdq %ymm26,%ymm24,%ymm10 vpunpckhqdq %ymm27,%ymm25,%ymm11 vpunpcklqdq %ymm30,%ymm28,%ymm12 vpunpcklqdq %ymm31,%ymm29,%ymm13 vpunpckhqdq %ymm30,%ymm28,%ymm14 vpunpckhqdq %ymm31,%ymm29,%ymm15 # interleave 128-bit words in state n, n+4 # xor/write first four blocks vmovdqa64 %ymm0,%ymm16 vperm2i128 $0x20,%ymm4,%ymm0,%ymm0 cmp $0x0020,%rcx jl .Lxorpart8 vpxord 0x0000(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0000(%rsi) vmovdqa64 %ymm16,%ymm0 vperm2i128 $0x31,%ymm4,%ymm0,%ymm4 vperm2i128 $0x20,%ymm12,%ymm8,%ymm0 cmp $0x0040,%rcx jl .Lxorpart8 vpxord 0x0020(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0020(%rsi) vperm2i128 $0x31,%ymm12,%ymm8,%ymm12 vperm2i128 $0x20,%ymm6,%ymm2,%ymm0 cmp $0x0060,%rcx jl .Lxorpart8 vpxord 0x0040(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0040(%rsi) vperm2i128 $0x31,%ymm6,%ymm2,%ymm6 vperm2i128 $0x20,%ymm14,%ymm10,%ymm0 cmp $0x0080,%rcx jl .Lxorpart8 vpxord 0x0060(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0060(%rsi) vperm2i128 $0x31,%ymm14,%ymm10,%ymm14 vperm2i128 $0x20,%ymm5,%ymm1,%ymm0 cmp $0x00a0,%rcx jl .Lxorpart8 vpxord 0x0080(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0080(%rsi) vperm2i128 $0x31,%ymm5,%ymm1,%ymm5 vperm2i128 $0x20,%ymm13,%ymm9,%ymm0 cmp $0x00c0,%rcx jl .Lxorpart8 vpxord 0x00a0(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x00a0(%rsi) vperm2i128 $0x31,%ymm13,%ymm9,%ymm13 vperm2i128 $0x20,%ymm7,%ymm3,%ymm0 cmp $0x00e0,%rcx jl .Lxorpart8 vpxord 0x00c0(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x00c0(%rsi) vperm2i128 $0x31,%ymm7,%ymm3,%ymm7 vperm2i128 $0x20,%ymm15,%ymm11,%ymm0 cmp $0x0100,%rcx jl .Lxorpart8 vpxord 0x00e0(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x00e0(%rsi) vperm2i128 $0x31,%ymm15,%ymm11,%ymm15 # xor remaining blocks, write to output vmovdqa64 %ymm4,%ymm0 cmp $0x0120,%rcx jl .Lxorpart8 vpxord 0x0100(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0100(%rsi) vmovdqa64 %ymm12,%ymm0 cmp $0x0140,%rcx jl .Lxorpart8 vpxord 0x0120(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0120(%rsi) vmovdqa64 %ymm6,%ymm0 cmp $0x0160,%rcx jl .Lxorpart8 vpxord 0x0140(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0140(%rsi) vmovdqa64 %ymm14,%ymm0 cmp $0x0180,%rcx jl .Lxorpart8 vpxord 0x0160(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0160(%rsi) vmovdqa64 %ymm5,%ymm0 cmp $0x01a0,%rcx jl .Lxorpart8 vpxord 0x0180(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x0180(%rsi) vmovdqa64 %ymm13,%ymm0 cmp $0x01c0,%rcx jl .Lxorpart8 vpxord 0x01a0(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x01a0(%rsi) vmovdqa64 %ymm7,%ymm0 cmp $0x01e0,%rcx jl .Lxorpart8 vpxord 0x01c0(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x01c0(%rsi) vmovdqa64 %ymm15,%ymm0 cmp $0x0200,%rcx jl .Lxorpart8 vpxord 0x01e0(%rdx),%ymm0,%ymm0 vmovdqu64 %ymm0,0x01e0(%rsi) .Ldone8: vzeroupper RET .Lxorpart8: # xor remaining bytes from partial register into output mov %rcx,%rax and $0x1f,%rcx jz .Ldone8 mov %rax,%r9 and $~0x1f,%r9 mov $1,%rax shld %cl,%rax,%rax sub $1,%rax kmovq %rax,%k1 vmovdqu8 (%rdx,%r9),%ymm1{%k1}{z} vpxord %ymm0,%ymm1,%ymm1 vmovdqu8 %ymm1,(%rsi,%r9){%k1} jmp .Ldone8 SYM_FUNC_END(chacha_8block_xor_avx512vl) |