diff mbox series

[net-next,v6,04/23] zinc: ChaCha20 x86_64 implementation

Message ID 20180925145622.29959-5-Jason@zx2c4.com
State New
Headers show
Series WireGuard: Secure Network Tunnel | expand

Commit Message

Jason A. Donenfeld Sept. 25, 2018, 2:56 p.m. UTC 
This provides SSSE3, AVX-2, AVX-512F, and AVX-512VL implementations for
ChaCha20. The AVX-512F implementation is disabled on Skylake, due to
throttling, and the VL ymm implementation is used instead. These come
from Andy Polyakov's implementation, with the following modifications
from Samuel Neves:

  - Some cosmetic changes, like renaming labels to .Lname, constants,
    and other Linux conventions.

  - CPU feature checking is done in C by the glue code, so that has been
    removed from the assembly.

  - Eliminate translating certain instructions, such as pshufb, palignr,
    vprotd, etc, to .byte directives. This is meant for compatibility
    with ancient toolchains, but presumably it is unnecessary here,
    since the build system already does checks on what GNU as can
    assemble.

  - When aligning the stack, the original code was saving %rsp to %r9.
    To keep objtool happy, we use instead the DRAP idiom to save %rsp
    to %r10:

      leaq    8(%rsp),%r10
      ... code here ...
      leaq    -8(%r10),%rsp

  - The original code assumes the stack comes aligned to 16 bytes. This
    is not necessarily the case, and to avoid crashes,
    `andq $-alignment, %rsp` was added in the prolog of a few functions.

  - The original hardcodes returns as .byte 0xf3,0xc3, aka "rep ret".
    We replace this by "ret". "rep ret" was meant to help with AMD K8
    chips, cf. http://repzret.org/p/repzret. It makes no sense to
    continue to use this kludge for code that won't even run on ancient
    AMD chips.

While this is CRYPTOGAMS code, the originating code for this happens to
be the same as OpenSSL's commit cded951378069a478391843f5f8653c1eb5128da

Cycle counts on a Core i7 6700HQ using the AVX-2 codepath:

size	old	new
----	----	----
0	62	52
16	414	376
32	410	400
48	414	422
64	362	356
80	714	666
96	714	700
112	712	718
128	692	646
144	1042	674
160	1042	694
176	1042	726
192	1018	650
208	1366	686
224	1366	696
240	1366	722
256	640	656
272	988	1246
288	988	1276
304	992	1296
320	972	1222
336	1318	1256
352	1318	1276
368	1316	1294
384	1294	1218
400	1642	1258
416	1642	1282
432	1642	1302
448	1628	1224
464	1970	1258
480	1970	1280
496	1970	1300
512	656	676
528	1010	1290
544	1010	1306
560	1010	1332
576	986	1254
592	1340	1284
608	1334	1310
624	1340	1334
640	1314	1254
656	1664	1282
672	1674	1306
688	1662	1336
704	1638	1250
720	1992	1292
736	1994	1308
752	1988	1334
768	1252	1254
784	1596	1290
800	1596	1314
816	1596	1330
832	1576	1256
848	1922	1286
864	1922	1314
880	1926	1338
896	1898	1258
912	2248	1288
928	2248	1320
944	2248	1338
960	2226	1268
976	2574	1288
992	2576	1312
1008	2574	1340

Cycle counts on a Xeon Gold 5120 using the AVX-512 codepath:

size	old	new
----	----	----
0	64	54
16	386	372
32	388	396
48	388	420
64	366	350
80	708	666
96	708	692
112	706	736
128	692	648
144	1036	682
160	1036	708
176	1036	730
192	1016	658
208	1360	684
224	1362	708
240	1360	732
256	644	500
272	990	526
288	988	556
304	988	576
320	972	500
336	1314	532
352	1316	558
368	1318	578
384	1308	506
400	1644	532
416	1644	556
432	1644	594
448	1624	508
464	1970	534
480	1970	556
496	1968	582
512	660	624
528	1016	682
544	1016	702
560	1018	728
576	998	654
592	1344	680
608	1344	708
624	1344	730
640	1326	654
656	1670	686
672	1670	708
688	1670	732
704	1652	658
720	1998	682
736	1998	710
752	1996	734
768	1256	662
784	1606	688
800	1606	714
816	1606	736
832	1584	660
848	1948	688
864	1950	714
880	1948	736
896	1912	688
912	2258	718
928	2258	744
944	2256	768
960	2238	692
976	2584	718
992	2584	744
1008	2584	770

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

Signed-off-by: Samuel Neves <sneves@dei.uc.pt>

Co-developed-by: Samuel Neves <sneves@dei.uc.pt>
Based-on-code-from: Andy Polyakov <appro@openssl.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
Cc: Andy Polyakov <appro@openssl.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: x86@kernel.org
---
 lib/zinc/Makefile                        |    1 +
 lib/zinc/chacha20/chacha20-x86_64-glue.h |  105 +
 lib/zinc/chacha20/chacha20-x86_64.S      | 2632 ++++++++++++++++++++++
 lib/zinc/chacha20/chacha20.c             |    4 +-
 4 files changed, 2741 insertions(+), 1 deletion(-)
 create mode 100644 lib/zinc/chacha20/chacha20-x86_64-glue.h
 create mode 100644 lib/zinc/chacha20/chacha20-x86_64.S

-- 
2.19.0

Comments

Jason A. Donenfeld Sept. 29, 2018, 2:01 a.m. UTC | #1 
Hi Ard,

On Fri, Sep 28, 2018 at 5:47 PM Ard Biesheuvel
<ard.biesheuvel@linaro.org> wrote:
> Please drop this SOB line: SOB is not about (co-)authorship but about

> who handled the patch on its way into mainline.


The s-o-b line is about the DCoO, which is given here by both of us,
with the code starting in a shared tree that only had that s-o-b. I
can remove it though if you think it's strange to have two s-o-bs.

> You are sending the

> patch so your SOB should come last.


I was wondering about the ordering of these, actually. I've seen s-o-b
on top and s-o-b on bottom of the cc list in lots of commits and
haven't yet divined the One True Position.

> You can drop the #ifdefs above ...


Yep. All of those ifdefs in this and in the other primitives are
already gone, and everything is fully IS_ENABLEDenabled now.

> > +#ifdef CONFIG_AS_AVX512

>

> ... and use IS_ENABLED(CONFIG_AS_AVX512) here inside the if().


Already done, per your suggestion a few days ago.

> > -#ifndef HAVE_CHACHA20_ARCH_IMPLEMENTATION

>

> As I mentioned in reply to the previous patch, please get rid of this

> CPP symbol ^^^


Ack.

Jason
Borislav Petkov Sept. 29, 2018, 7:56 a.m. UTC | #2 
On Sat, Sep 29, 2018 at 04:01:53AM +0200, Jason A. Donenfeld wrote:
> I was wondering about the ordering of these, actually. I've seen s-o-b

> on top and s-o-b on bottom of the cc list in lots of commits and

> haven't yet divined the One True Position.


Documentation/process/submitting-patches.rst

section 12, first sentence.

The SOB chain needs to clearly express the path of the patch from
author(s) to the upstream kernel.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.
Borislav Petkov Sept. 29, 2018, 8:11 a.m. UTC | #3 
On Sat, Sep 29, 2018 at 10:00:29AM +0200, Ard Biesheuvel wrote:
> Note that this is the author of the *patch* not necessarily the author

> of the code.

> 

> Anyone is free to submit patches adding code authored by others as

> long as the author has made it available under a suitable license, and

> this is actually the whole point of the S-o-B: you are stating to the

> next guy that the code included in your patch was made available to

> you under a compatible license.


... and the actual author could be named with Originally-by or
Co-Developed-by:, and even in free text in the commit message.

But the correct SOB chain denoting who handled the patch on its way up,
is important.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.
Jason A. Donenfeld Oct. 2, 2018, 1:07 a.m. UTC | #4 
Hi Ard,

On Fri, Sep 28, 2018 at 5:47 PM Ard Biesheuvel
<ard.biesheuvel@linaro.org> wrote:
> > While this is CRYPTOGAMS code, the originating code for this happens to

> > be the same as OpenSSL's commit cded951378069a478391843f5f8653c1eb5128da

> >

>

> I'd still prefer the kernel side changes to be presented as a separate

> followup patch


I've restructured things for the MIPS64 and x86_64 and it will be as
you've asked for v7.

Jason
Jason A. Donenfeld Oct. 2, 2018, 1:09 a.m. UTC | #5 
Hi Borislav,

On Sat, Sep 29, 2018 at 9:56 AM Borislav Petkov <bp@alien8.de> wrote:
> Documentation/process/submitting-patches.rst

>

> section 12, first sentence.

>

> The SOB chain needs to clearly express the path of the patch from

> author(s) to the upstream kernel.


Thanks for the clarification.

I've received the SOB directly from the individual in question as it
traveled through an intermediate tree on its way to the tree being
submitted here. Therefore I will retain that SOB so that it shows the
full path.

Jason
Herbert Xu Oct. 2, 2018, 3:18 a.m. UTC | #6 
Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> This provides SSSE3, AVX-2, AVX-512F, and AVX-512VL implementations for

> ChaCha20. The AVX-512F implementation is disabled on Skylake, due to

> throttling, and the VL ymm implementation is used instead. These come

> from Andy Polyakov's implementation, with the following modifications

> from Samuel Neves:

> 

>  - Some cosmetic changes, like renaming labels to .Lname, constants,

>    and other Linux conventions.

> 

>  - CPU feature checking is done in C by the glue code, so that has been

>    removed from the assembly.

> 

>  - Eliminate translating certain instructions, such as pshufb, palignr,

>    vprotd, etc, to .byte directives. This is meant for compatibility

>    with ancient toolchains, but presumably it is unnecessary here,

>    since the build system already does checks on what GNU as can

>    assemble.

> 

>  - When aligning the stack, the original code was saving %rsp to %r9.

>    To keep objtool happy, we use instead the DRAP idiom to save %rsp

>    to %r10:

> 

>      leaq    8(%rsp),%r10

>      ... code here ...

>      leaq    -8(%r10),%rsp

> 

>  - The original code assumes the stack comes aligned to 16 bytes. This

>    is not necessarily the case, and to avoid crashes,

>    `andq $-alignment, %rsp` was added in the prolog of a few functions.

> 

>  - The original hardcodes returns as .byte 0xf3,0xc3, aka "rep ret".

>    We replace this by "ret". "rep ret" was meant to help with AMD K8

>    chips, cf. http://repzret.org/p/repzret. It makes no sense to

>    continue to use this kludge for code that won't even run on ancient

>    AMD chips.

> 

> While this is CRYPTOGAMS code, the originating code for this happens to

> be the same as OpenSSL's commit cded951378069a478391843f5f8653c1eb5128da

> 

> Cycle counts on a Core i7 6700HQ using the AVX-2 codepath:

> 

> size    old     new

> ----    ----    ----

> 0       62      52


What is the old column? Is it the existing x86-64 implementation
in the kernel or something else? This needs to be made clear in the
patch description.

The same comment from the previous patch also stands here.  Please
ensure that we only have one copy of chacha x86-64 code in the kernel.
Either replace the existing one right here or in a follow-up patch
in the same series.

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
Jason A. Donenfeld Oct. 2, 2018, 3:20 a.m. UTC | #7 
Hi Herbert,

On Tue, Oct 2, 2018 at 5:18 AM Herbert Xu <herbert@gondor.apana.org.au> wrote:
> > size    old     new

> > ----    ----    ----

> > 0       62      52

>

> What is the old column? Is it the existing x86-64 implementation

> in the kernel or something else? This needs to be made clear in the

> patch description.


Good idea. I'll make that more clear.

> The same comment from the previous patch also stands here.  Please

> ensure that we only have one copy of chacha x86-64 code in the kernel.

> Either replace the existing one right here or in a follow-up patch

> in the same series.


Yes indeed this happens within this same series.

Jason
diff mbox series

Patch

diff --git a/lib/zinc/Makefile b/lib/zinc/Makefile
index 3d80144d55a6..223a0816c918 100644
--- a/lib/zinc/Makefile
+++ b/lib/zinc/Makefile
@@ -3,4 +3,5 @@  ccflags-y += -D'pr_fmt(fmt)="zinc: " fmt'
 ccflags-$(CONFIG_ZINC_DEBUG) += -DDEBUG
 
 zinc_chacha20-y := chacha20/chacha20.o
+zinc_chacha20-$(CONFIG_ZINC_ARCH_X86_64) += chacha20/chacha20-x86_64.o
 obj-$(CONFIG_ZINC_CHACHA20) += zinc_chacha20.o
diff --git a/lib/zinc/chacha20/chacha20-x86_64-glue.h b/lib/zinc/chacha20/chacha20-x86_64-glue.h
new file mode 100644
index 000000000000..9b47001661a6
--- /dev/null
+++ b/lib/zinc/chacha20/chacha20-x86_64-glue.h
@@ -0,0 +1,105 @@ 
+/* SPDX-License-Identifier: GPL-2.0 OR MIT */
+/*
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#include <asm/fpu/api.h>
+#include <asm/cpufeature.h>
+#include <asm/processor.h>
+#include <asm/intel-family.h>
+
+#ifdef CONFIG_AS_SSSE3
+asmlinkage void hchacha20_ssse3(u32 *derived_key, const u8 *nonce,
+				const u8 *key);
+asmlinkage void chacha20_ssse3(u8 *out, const u8 *in, const size_t len,
+			       const u32 key[8], const u32 counter[4]);
+#endif
+#ifdef CONFIG_AS_AVX2
+asmlinkage void chacha20_avx2(u8 *out, const u8 *in, const size_t len,
+			      const u32 key[8], const u32 counter[4]);
+#endif
+#ifdef CONFIG_AS_AVX512
+asmlinkage void chacha20_avx512(u8 *out, const u8 *in, const size_t len,
+				const u32 key[8], const u32 counter[4]);
+asmlinkage void chacha20_avx512vl(u8 *out, const u8 *in, const size_t len,
+				  const u32 key[8], const u32 counter[4]);
+#endif
+
+static bool chacha20_use_ssse3 __ro_after_init;
+static bool chacha20_use_avx2 __ro_after_init;
+static bool chacha20_use_avx512 __ro_after_init;
+static bool chacha20_use_avx512vl __ro_after_init;
+
+static void __init chacha20_fpu_init(void)
+{
+	chacha20_use_ssse3 = boot_cpu_has(X86_FEATURE_SSSE3);
+	chacha20_use_avx2 =
+		boot_cpu_has(X86_FEATURE_AVX) &&
+		boot_cpu_has(X86_FEATURE_AVX2) &&
+		cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL);
+	chacha20_use_avx512 =
+		boot_cpu_has(X86_FEATURE_AVX) &&
+		boot_cpu_has(X86_FEATURE_AVX2) &&
+		boot_cpu_has(X86_FEATURE_AVX512F) &&
+		cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM |
+				  XFEATURE_MASK_AVX512, NULL) &&
+		/* Skylake downclocks unacceptably much when using zmm. */
+		boot_cpu_data.x86_model != INTEL_FAM6_SKYLAKE_X;
+	chacha20_use_avx512vl =
+		boot_cpu_has(X86_FEATURE_AVX) &&
+		boot_cpu_has(X86_FEATURE_AVX2) &&
+		boot_cpu_has(X86_FEATURE_AVX512F) &&
+		boot_cpu_has(X86_FEATURE_AVX512VL) &&
+		cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM |
+				  XFEATURE_MASK_AVX512, NULL);
+}
+
+static inline bool chacha20_arch(struct chacha20_ctx *state, u8 *dst,
+				 const u8 *src, const size_t len,
+				 simd_context_t *simd_context)
+{
+	if (!chacha20_use_ssse3 || len <= CHACHA20_BLOCK_SIZE ||
+	    !simd_use(simd_context))
+		return false;
+
+#ifdef CONFIG_AS_AVX512
+	if (chacha20_use_avx512 && len >= CHACHA20_BLOCK_SIZE * 8) {
+		chacha20_avx512(dst, src, len, state->key, state->counter);
+		goto success;
+	}
+	if (chacha20_use_avx512vl && len >= CHACHA20_BLOCK_SIZE * 4) {
+		chacha20_avx512vl(dst, src, len, state->key, state->counter);
+		goto success;
+	}
+#endif
+#ifdef CONFIG_AS_AVX2
+	if (chacha20_use_avx2 && len >= CHACHA20_BLOCK_SIZE * 4) {
+		chacha20_avx2(dst, src, len, state->key, state->counter);
+		goto success;
+	}
+#endif
+#ifdef CONFIG_AS_SSSE3
+	if (chacha20_use_ssse3) {
+		chacha20_ssse3(dst, src, len, state->key, state->counter);
+		goto success;
+	}
+#endif
+	return false;
+success:
+	state->counter[0] += (len + 63) / 64;
+	return true;
+}
+
+static inline bool hchacha20_arch(u32 derived_key[CHACHA20_KEY_WORDS],
+				  const u8 nonce[HCHACHA20_NONCE_SIZE],
+				  const u8 key[HCHACHA20_KEY_SIZE],
+				  simd_context_t *simd_context)
+{
+#if defined(CONFIG_AS_SSSE3)
+	if (chacha20_use_ssse3 && simd_use(simd_context)) {
+		hchacha20_ssse3(derived_key, nonce, key);
+		return true;
+	}
+#endif
+	return false;
+}
diff --git a/lib/zinc/chacha20/chacha20-x86_64.S b/lib/zinc/chacha20/chacha20-x86_64.S
new file mode 100644
index 000000000000..3d10c7f21642
--- /dev/null
+++ b/lib/zinc/chacha20/chacha20-x86_64.S
@@ -0,0 +1,2632 @@ 
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (C) 2017 Samuel Neves <sneves@dei.uc.pt>. All Rights Reserved.
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2006-2017 CRYPTOGAMS by <appro@openssl.org>. All Rights Reserved.
+ *
+ * This is based in part on Andy Polyakov's implementation from CRYPTOGAMS.
+ */
+
+#include <linux/linkage.h>
+
+.section .rodata.cst16.Lzero, "aM", @progbits, 16
+.align	16
+.Lzero:
+.long	0,0,0,0
+.section .rodata.cst16.Lone, "aM", @progbits, 16
+.align	16
+.Lone:
+.long	1,0,0,0
+.section .rodata.cst16.Linc, "aM", @progbits, 16
+.align	16
+.Linc:
+.long	0,1,2,3
+.section .rodata.cst16.Lfour, "aM", @progbits, 16
+.align	16
+.Lfour:
+.long	4,4,4,4
+.section .rodata.cst32.Lincy, "aM", @progbits, 32
+.align	32
+.Lincy:
+.long	0,2,4,6,1,3,5,7
+.section .rodata.cst32.Leight, "aM", @progbits, 32
+.align	32
+.Leight:
+.long	8,8,8,8,8,8,8,8
+.section .rodata.cst16.Lrot16, "aM", @progbits, 16
+.align	16
+.Lrot16:
+.byte	0x2,0x3,0x0,0x1, 0x6,0x7,0x4,0x5, 0xa,0xb,0x8,0x9, 0xe,0xf,0xc,0xd
+.section .rodata.cst16.Lrot24, "aM", @progbits, 16
+.align	16
+.Lrot24:
+.byte	0x3,0x0,0x1,0x2, 0x7,0x4,0x5,0x6, 0xb,0x8,0x9,0xa, 0xf,0xc,0xd,0xe
+.section .rodata.cst16.Lsigma, "aM", @progbits, 16
+.align	16
+.Lsigma:
+.byte	101,120,112,97,110,100,32,51,50,45,98,121,116,101,32,107,0
+.section .rodata.cst64.Lzeroz, "aM", @progbits, 64
+.align	64
+.Lzeroz:
+.long	0,0,0,0, 1,0,0,0, 2,0,0,0, 3,0,0,0
+.section .rodata.cst64.Lfourz, "aM", @progbits, 64
+.align	64
+.Lfourz:
+.long	4,0,0,0, 4,0,0,0, 4,0,0,0, 4,0,0,0
+.section .rodata.cst64.Lincz, "aM", @progbits, 64
+.align	64
+.Lincz:
+.long	0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+.section .rodata.cst64.Lsixteen, "aM", @progbits, 64
+.align	64
+.Lsixteen:
+.long	16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16
+.section .rodata.cst32.Ltwoy, "aM", @progbits, 32
+.align	64
+.Ltwoy:
+.long	2,0,0,0, 2,0,0,0
+
+.text
+
+#ifdef CONFIG_AS_SSSE3
+.align	32
+ENTRY(hchacha20_ssse3)
+	movdqa	.Lsigma(%rip),%xmm0
+	movdqu	(%rdx),%xmm1
+	movdqu	16(%rdx),%xmm2
+	movdqu	(%rsi),%xmm3
+	movdqa	.Lrot16(%rip),%xmm6
+	movdqa	.Lrot24(%rip),%xmm7
+	movq	$10,%r8
+	.align	32
+.Loop_hssse3:
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm6,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$20,%xmm1
+	pslld	$12,%xmm4
+	por	%xmm4,%xmm1
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm7,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$25,%xmm1
+	pslld	$7,%xmm4
+	por	%xmm4,%xmm1
+	pshufd	$78,%xmm2,%xmm2
+	pshufd	$57,%xmm1,%xmm1
+	pshufd	$147,%xmm3,%xmm3
+	nop
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm6,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$20,%xmm1
+	pslld	$12,%xmm4
+	por	%xmm4,%xmm1
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm7,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$25,%xmm1
+	pslld	$7,%xmm4
+	por	%xmm4,%xmm1
+	pshufd	$78,%xmm2,%xmm2
+	pshufd	$147,%xmm1,%xmm1
+	pshufd	$57,%xmm3,%xmm3
+	decq	%r8
+	jnz	.Loop_hssse3
+	movdqu	%xmm0,0(%rdi)
+	movdqu	%xmm3,16(%rdi)
+	ret
+ENDPROC(hchacha20_ssse3)
+
+.align	32
+ENTRY(chacha20_ssse3)
+.Lchacha20_ssse3:
+	cmpq	$0,%rdx
+	je	.Lssse3_epilogue
+	leaq	8(%rsp),%r10
+
+	cmpq	$128,%rdx
+	ja	.Lchacha20_4x
+
+.Ldo_sse3_after_all:
+	subq	$64+8,%rsp
+	andq	$-32,%rsp
+	movdqa	.Lsigma(%rip),%xmm0
+	movdqu	(%rcx),%xmm1
+	movdqu	16(%rcx),%xmm2
+	movdqu	(%r8),%xmm3
+	movdqa	.Lrot16(%rip),%xmm6
+	movdqa	.Lrot24(%rip),%xmm7
+
+	movdqa	%xmm0,0(%rsp)
+	movdqa	%xmm1,16(%rsp)
+	movdqa	%xmm2,32(%rsp)
+	movdqa	%xmm3,48(%rsp)
+	movq	$10,%r8
+	jmp	.Loop_ssse3
+
+.align	32
+.Loop_outer_ssse3:
+	movdqa	.Lone(%rip),%xmm3
+	movdqa	0(%rsp),%xmm0
+	movdqa	16(%rsp),%xmm1
+	movdqa	32(%rsp),%xmm2
+	paddd	48(%rsp),%xmm3
+	movq	$10,%r8
+	movdqa	%xmm3,48(%rsp)
+	jmp	.Loop_ssse3
+
+.align	32
+.Loop_ssse3:
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm6,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$20,%xmm1
+	pslld	$12,%xmm4
+	por	%xmm4,%xmm1
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm7,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$25,%xmm1
+	pslld	$7,%xmm4
+	por	%xmm4,%xmm1
+	pshufd	$78,%xmm2,%xmm2
+	pshufd	$57,%xmm1,%xmm1
+	pshufd	$147,%xmm3,%xmm3
+	nop
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm6,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$20,%xmm1
+	pslld	$12,%xmm4
+	por	%xmm4,%xmm1
+	paddd	%xmm1,%xmm0
+	pxor	%xmm0,%xmm3
+	pshufb	%xmm7,%xmm3
+	paddd	%xmm3,%xmm2
+	pxor	%xmm2,%xmm1
+	movdqa	%xmm1,%xmm4
+	psrld	$25,%xmm1
+	pslld	$7,%xmm4
+	por	%xmm4,%xmm1
+	pshufd	$78,%xmm2,%xmm2
+	pshufd	$147,%xmm1,%xmm1
+	pshufd	$57,%xmm3,%xmm3
+	decq	%r8
+	jnz	.Loop_ssse3
+	paddd	0(%rsp),%xmm0
+	paddd	16(%rsp),%xmm1
+	paddd	32(%rsp),%xmm2
+	paddd	48(%rsp),%xmm3
+
+	cmpq	$64,%rdx
+	jb	.Ltail_ssse3
+
+	movdqu	0(%rsi),%xmm4
+	movdqu	16(%rsi),%xmm5
+	pxor	%xmm4,%xmm0
+	movdqu	32(%rsi),%xmm4
+	pxor	%xmm5,%xmm1
+	movdqu	48(%rsi),%xmm5
+	leaq	64(%rsi),%rsi
+	pxor	%xmm4,%xmm2
+	pxor	%xmm5,%xmm3
+
+	movdqu	%xmm0,0(%rdi)
+	movdqu	%xmm1,16(%rdi)
+	movdqu	%xmm2,32(%rdi)
+	movdqu	%xmm3,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	subq	$64,%rdx
+	jnz	.Loop_outer_ssse3
+
+	jmp	.Ldone_ssse3
+
+.align	16
+.Ltail_ssse3:
+	movdqa	%xmm0,0(%rsp)
+	movdqa	%xmm1,16(%rsp)
+	movdqa	%xmm2,32(%rsp)
+	movdqa	%xmm3,48(%rsp)
+	xorq	%r8,%r8
+
+.Loop_tail_ssse3:
+	movzbl	(%rsi,%r8,1),%eax
+	movzbl	(%rsp,%r8,1),%ecx
+	leaq	1(%r8),%r8
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r8,1)
+	decq	%rdx
+	jnz	.Loop_tail_ssse3
+
+.Ldone_ssse3:
+	leaq	-8(%r10),%rsp
+
+.Lssse3_epilogue:
+	ret
+
+.align	32
+.Lchacha20_4x:
+	leaq	8(%rsp),%r10
+
+.Lproceed4x:
+	subq	$0x140+8,%rsp
+	andq	$-32,%rsp
+	movdqa	.Lsigma(%rip),%xmm11
+	movdqu	(%rcx),%xmm15
+	movdqu	16(%rcx),%xmm7
+	movdqu	(%r8),%xmm3
+	leaq	256(%rsp),%rcx
+	leaq	.Lrot16(%rip),%r9
+	leaq	.Lrot24(%rip),%r11
+
+	pshufd	$0x00,%xmm11,%xmm8
+	pshufd	$0x55,%xmm11,%xmm9
+	movdqa	%xmm8,64(%rsp)
+	pshufd	$0xaa,%xmm11,%xmm10
+	movdqa	%xmm9,80(%rsp)
+	pshufd	$0xff,%xmm11,%xmm11
+	movdqa	%xmm10,96(%rsp)
+	movdqa	%xmm11,112(%rsp)
+
+	pshufd	$0x00,%xmm15,%xmm12
+	pshufd	$0x55,%xmm15,%xmm13
+	movdqa	%xmm12,128-256(%rcx)
+	pshufd	$0xaa,%xmm15,%xmm14
+	movdqa	%xmm13,144-256(%rcx)
+	pshufd	$0xff,%xmm15,%xmm15
+	movdqa	%xmm14,160-256(%rcx)
+	movdqa	%xmm15,176-256(%rcx)
+
+	pshufd	$0x00,%xmm7,%xmm4
+	pshufd	$0x55,%xmm7,%xmm5
+	movdqa	%xmm4,192-256(%rcx)
+	pshufd	$0xaa,%xmm7,%xmm6
+	movdqa	%xmm5,208-256(%rcx)
+	pshufd	$0xff,%xmm7,%xmm7
+	movdqa	%xmm6,224-256(%rcx)
+	movdqa	%xmm7,240-256(%rcx)
+
+	pshufd	$0x00,%xmm3,%xmm0
+	pshufd	$0x55,%xmm3,%xmm1
+	paddd	.Linc(%rip),%xmm0
+	pshufd	$0xaa,%xmm3,%xmm2
+	movdqa	%xmm1,272-256(%rcx)
+	pshufd	$0xff,%xmm3,%xmm3
+	movdqa	%xmm2,288-256(%rcx)
+	movdqa	%xmm3,304-256(%rcx)
+
+	jmp	.Loop_enter4x
+
+.align	32
+.Loop_outer4x:
+	movdqa	64(%rsp),%xmm8
+	movdqa	80(%rsp),%xmm9
+	movdqa	96(%rsp),%xmm10
+	movdqa	112(%rsp),%xmm11
+	movdqa	128-256(%rcx),%xmm12
+	movdqa	144-256(%rcx),%xmm13
+	movdqa	160-256(%rcx),%xmm14
+	movdqa	176-256(%rcx),%xmm15
+	movdqa	192-256(%rcx),%xmm4
+	movdqa	208-256(%rcx),%xmm5
+	movdqa	224-256(%rcx),%xmm6
+	movdqa	240-256(%rcx),%xmm7
+	movdqa	256-256(%rcx),%xmm0
+	movdqa	272-256(%rcx),%xmm1
+	movdqa	288-256(%rcx),%xmm2
+	movdqa	304-256(%rcx),%xmm3
+	paddd	.Lfour(%rip),%xmm0
+
+.Loop_enter4x:
+	movdqa	%xmm6,32(%rsp)
+	movdqa	%xmm7,48(%rsp)
+	movdqa	(%r9),%xmm7
+	movl	$10,%eax
+	movdqa	%xmm0,256-256(%rcx)
+	jmp	.Loop4x
+
+.align	32
+.Loop4x:
+	paddd	%xmm12,%xmm8
+	paddd	%xmm13,%xmm9
+	pxor	%xmm8,%xmm0
+	pxor	%xmm9,%xmm1
+	pshufb	%xmm7,%xmm0
+	pshufb	%xmm7,%xmm1
+	paddd	%xmm0,%xmm4
+	paddd	%xmm1,%xmm5
+	pxor	%xmm4,%xmm12
+	pxor	%xmm5,%xmm13
+	movdqa	%xmm12,%xmm6
+	pslld	$12,%xmm12
+	psrld	$20,%xmm6
+	movdqa	%xmm13,%xmm7
+	pslld	$12,%xmm13
+	por	%xmm6,%xmm12
+	psrld	$20,%xmm7
+	movdqa	(%r11),%xmm6
+	por	%xmm7,%xmm13
+	paddd	%xmm12,%xmm8
+	paddd	%xmm13,%xmm9
+	pxor	%xmm8,%xmm0
+	pxor	%xmm9,%xmm1
+	pshufb	%xmm6,%xmm0
+	pshufb	%xmm6,%xmm1
+	paddd	%xmm0,%xmm4
+	paddd	%xmm1,%xmm5
+	pxor	%xmm4,%xmm12
+	pxor	%xmm5,%xmm13
+	movdqa	%xmm12,%xmm7
+	pslld	$7,%xmm12
+	psrld	$25,%xmm7
+	movdqa	%xmm13,%xmm6
+	pslld	$7,%xmm13
+	por	%xmm7,%xmm12
+	psrld	$25,%xmm6
+	movdqa	(%r9),%xmm7
+	por	%xmm6,%xmm13
+	movdqa	%xmm4,0(%rsp)
+	movdqa	%xmm5,16(%rsp)
+	movdqa	32(%rsp),%xmm4
+	movdqa	48(%rsp),%xmm5
+	paddd	%xmm14,%xmm10
+	paddd	%xmm15,%xmm11
+	pxor	%xmm10,%xmm2
+	pxor	%xmm11,%xmm3
+	pshufb	%xmm7,%xmm2
+	pshufb	%xmm7,%xmm3
+	paddd	%xmm2,%xmm4
+	paddd	%xmm3,%xmm5
+	pxor	%xmm4,%xmm14
+	pxor	%xmm5,%xmm15
+	movdqa	%xmm14,%xmm6
+	pslld	$12,%xmm14
+	psrld	$20,%xmm6
+	movdqa	%xmm15,%xmm7
+	pslld	$12,%xmm15
+	por	%xmm6,%xmm14
+	psrld	$20,%xmm7
+	movdqa	(%r11),%xmm6
+	por	%xmm7,%xmm15
+	paddd	%xmm14,%xmm10
+	paddd	%xmm15,%xmm11
+	pxor	%xmm10,%xmm2
+	pxor	%xmm11,%xmm3
+	pshufb	%xmm6,%xmm2
+	pshufb	%xmm6,%xmm3
+	paddd	%xmm2,%xmm4
+	paddd	%xmm3,%xmm5
+	pxor	%xmm4,%xmm14
+	pxor	%xmm5,%xmm15
+	movdqa	%xmm14,%xmm7
+	pslld	$7,%xmm14
+	psrld	$25,%xmm7
+	movdqa	%xmm15,%xmm6
+	pslld	$7,%xmm15
+	por	%xmm7,%xmm14
+	psrld	$25,%xmm6
+	movdqa	(%r9),%xmm7
+	por	%xmm6,%xmm15
+	paddd	%xmm13,%xmm8
+	paddd	%xmm14,%xmm9
+	pxor	%xmm8,%xmm3
+	pxor	%xmm9,%xmm0
+	pshufb	%xmm7,%xmm3
+	pshufb	%xmm7,%xmm0
+	paddd	%xmm3,%xmm4
+	paddd	%xmm0,%xmm5
+	pxor	%xmm4,%xmm13
+	pxor	%xmm5,%xmm14
+	movdqa	%xmm13,%xmm6
+	pslld	$12,%xmm13
+	psrld	$20,%xmm6
+	movdqa	%xmm14,%xmm7
+	pslld	$12,%xmm14
+	por	%xmm6,%xmm13
+	psrld	$20,%xmm7
+	movdqa	(%r11),%xmm6
+	por	%xmm7,%xmm14
+	paddd	%xmm13,%xmm8
+	paddd	%xmm14,%xmm9
+	pxor	%xmm8,%xmm3
+	pxor	%xmm9,%xmm0
+	pshufb	%xmm6,%xmm3
+	pshufb	%xmm6,%xmm0
+	paddd	%xmm3,%xmm4
+	paddd	%xmm0,%xmm5
+	pxor	%xmm4,%xmm13
+	pxor	%xmm5,%xmm14
+	movdqa	%xmm13,%xmm7
+	pslld	$7,%xmm13
+	psrld	$25,%xmm7
+	movdqa	%xmm14,%xmm6
+	pslld	$7,%xmm14
+	por	%xmm7,%xmm13
+	psrld	$25,%xmm6
+	movdqa	(%r9),%xmm7
+	por	%xmm6,%xmm14
+	movdqa	%xmm4,32(%rsp)
+	movdqa	%xmm5,48(%rsp)
+	movdqa	0(%rsp),%xmm4
+	movdqa	16(%rsp),%xmm5
+	paddd	%xmm15,%xmm10
+	paddd	%xmm12,%xmm11
+	pxor	%xmm10,%xmm1
+	pxor	%xmm11,%xmm2
+	pshufb	%xmm7,%xmm1
+	pshufb	%xmm7,%xmm2
+	paddd	%xmm1,%xmm4
+	paddd	%xmm2,%xmm5
+	pxor	%xmm4,%xmm15
+	pxor	%xmm5,%xmm12
+	movdqa	%xmm15,%xmm6
+	pslld	$12,%xmm15
+	psrld	$20,%xmm6
+	movdqa	%xmm12,%xmm7
+	pslld	$12,%xmm12
+	por	%xmm6,%xmm15
+	psrld	$20,%xmm7
+	movdqa	(%r11),%xmm6
+	por	%xmm7,%xmm12
+	paddd	%xmm15,%xmm10
+	paddd	%xmm12,%xmm11
+	pxor	%xmm10,%xmm1
+	pxor	%xmm11,%xmm2
+	pshufb	%xmm6,%xmm1
+	pshufb	%xmm6,%xmm2
+	paddd	%xmm1,%xmm4
+	paddd	%xmm2,%xmm5
+	pxor	%xmm4,%xmm15
+	pxor	%xmm5,%xmm12
+	movdqa	%xmm15,%xmm7
+	pslld	$7,%xmm15
+	psrld	$25,%xmm7
+	movdqa	%xmm12,%xmm6
+	pslld	$7,%xmm12
+	por	%xmm7,%xmm15
+	psrld	$25,%xmm6
+	movdqa	(%r9),%xmm7
+	por	%xmm6,%xmm12
+	decl	%eax
+	jnz	.Loop4x
+
+	paddd	64(%rsp),%xmm8
+	paddd	80(%rsp),%xmm9
+	paddd	96(%rsp),%xmm10
+	paddd	112(%rsp),%xmm11
+
+	movdqa	%xmm8,%xmm6
+	punpckldq	%xmm9,%xmm8
+	movdqa	%xmm10,%xmm7
+	punpckldq	%xmm11,%xmm10
+	punpckhdq	%xmm9,%xmm6
+	punpckhdq	%xmm11,%xmm7
+	movdqa	%xmm8,%xmm9
+	punpcklqdq	%xmm10,%xmm8
+	movdqa	%xmm6,%xmm11
+	punpcklqdq	%xmm7,%xmm6
+	punpckhqdq	%xmm10,%xmm9
+	punpckhqdq	%xmm7,%xmm11
+	paddd	128-256(%rcx),%xmm12
+	paddd	144-256(%rcx),%xmm13
+	paddd	160-256(%rcx),%xmm14
+	paddd	176-256(%rcx),%xmm15
+
+	movdqa	%xmm8,0(%rsp)
+	movdqa	%xmm9,16(%rsp)
+	movdqa	32(%rsp),%xmm8
+	movdqa	48(%rsp),%xmm9
+
+	movdqa	%xmm12,%xmm10
+	punpckldq	%xmm13,%xmm12
+	movdqa	%xmm14,%xmm7
+	punpckldq	%xmm15,%xmm14
+	punpckhdq	%xmm13,%xmm10
+	punpckhdq	%xmm15,%xmm7
+	movdqa	%xmm12,%xmm13
+	punpcklqdq	%xmm14,%xmm12
+	movdqa	%xmm10,%xmm15
+	punpcklqdq	%xmm7,%xmm10
+	punpckhqdq	%xmm14,%xmm13
+	punpckhqdq	%xmm7,%xmm15
+	paddd	192-256(%rcx),%xmm4
+	paddd	208-256(%rcx),%xmm5
+	paddd	224-256(%rcx),%xmm8
+	paddd	240-256(%rcx),%xmm9
+
+	movdqa	%xmm6,32(%rsp)
+	movdqa	%xmm11,48(%rsp)
+
+	movdqa	%xmm4,%xmm14
+	punpckldq	%xmm5,%xmm4
+	movdqa	%xmm8,%xmm7
+	punpckldq	%xmm9,%xmm8
+	punpckhdq	%xmm5,%xmm14
+	punpckhdq	%xmm9,%xmm7
+	movdqa	%xmm4,%xmm5
+	punpcklqdq	%xmm8,%xmm4
+	movdqa	%xmm14,%xmm9
+	punpcklqdq	%xmm7,%xmm14
+	punpckhqdq	%xmm8,%xmm5
+	punpckhqdq	%xmm7,%xmm9
+	paddd	256-256(%rcx),%xmm0
+	paddd	272-256(%rcx),%xmm1
+	paddd	288-256(%rcx),%xmm2
+	paddd	304-256(%rcx),%xmm3
+
+	movdqa	%xmm0,%xmm8
+	punpckldq	%xmm1,%xmm0
+	movdqa	%xmm2,%xmm7
+	punpckldq	%xmm3,%xmm2
+	punpckhdq	%xmm1,%xmm8
+	punpckhdq	%xmm3,%xmm7
+	movdqa	%xmm0,%xmm1
+	punpcklqdq	%xmm2,%xmm0
+	movdqa	%xmm8,%xmm3
+	punpcklqdq	%xmm7,%xmm8
+	punpckhqdq	%xmm2,%xmm1
+	punpckhqdq	%xmm7,%xmm3
+	cmpq	$256,%rdx
+	jb	.Ltail4x
+
+	movdqu	0(%rsi),%xmm6
+	movdqu	16(%rsi),%xmm11
+	movdqu	32(%rsi),%xmm2
+	movdqu	48(%rsi),%xmm7
+	pxor	0(%rsp),%xmm6
+	pxor	%xmm12,%xmm11
+	pxor	%xmm4,%xmm2
+	pxor	%xmm0,%xmm7
+
+	movdqu	%xmm6,0(%rdi)
+	movdqu	64(%rsi),%xmm6
+	movdqu	%xmm11,16(%rdi)
+	movdqu	80(%rsi),%xmm11
+	movdqu	%xmm2,32(%rdi)
+	movdqu	96(%rsi),%xmm2
+	movdqu	%xmm7,48(%rdi)
+	movdqu	112(%rsi),%xmm7
+	leaq	128(%rsi),%rsi
+	pxor	16(%rsp),%xmm6
+	pxor	%xmm13,%xmm11
+	pxor	%xmm5,%xmm2
+	pxor	%xmm1,%xmm7
+
+	movdqu	%xmm6,64(%rdi)
+	movdqu	0(%rsi),%xmm6
+	movdqu	%xmm11,80(%rdi)
+	movdqu	16(%rsi),%xmm11
+	movdqu	%xmm2,96(%rdi)
+	movdqu	32(%rsi),%xmm2
+	movdqu	%xmm7,112(%rdi)
+	leaq	128(%rdi),%rdi
+	movdqu	48(%rsi),%xmm7
+	pxor	32(%rsp),%xmm6
+	pxor	%xmm10,%xmm11
+	pxor	%xmm14,%xmm2
+	pxor	%xmm8,%xmm7
+
+	movdqu	%xmm6,0(%rdi)
+	movdqu	64(%rsi),%xmm6
+	movdqu	%xmm11,16(%rdi)
+	movdqu	80(%rsi),%xmm11
+	movdqu	%xmm2,32(%rdi)
+	movdqu	96(%rsi),%xmm2
+	movdqu	%xmm7,48(%rdi)
+	movdqu	112(%rsi),%xmm7
+	leaq	128(%rsi),%rsi
+	pxor	48(%rsp),%xmm6
+	pxor	%xmm15,%xmm11
+	pxor	%xmm9,%xmm2
+	pxor	%xmm3,%xmm7
+	movdqu	%xmm6,64(%rdi)
+	movdqu	%xmm11,80(%rdi)
+	movdqu	%xmm2,96(%rdi)
+	movdqu	%xmm7,112(%rdi)
+	leaq	128(%rdi),%rdi
+
+	subq	$256,%rdx
+	jnz	.Loop_outer4x
+
+	jmp	.Ldone4x
+
+.Ltail4x:
+	cmpq	$192,%rdx
+	jae	.L192_or_more4x
+	cmpq	$128,%rdx
+	jae	.L128_or_more4x
+	cmpq	$64,%rdx
+	jae	.L64_or_more4x
+
+
+	xorq	%r9,%r9
+
+	movdqa	%xmm12,16(%rsp)
+	movdqa	%xmm4,32(%rsp)
+	movdqa	%xmm0,48(%rsp)
+	jmp	.Loop_tail4x
+
+.align	32
+.L64_or_more4x:
+	movdqu	0(%rsi),%xmm6
+	movdqu	16(%rsi),%xmm11
+	movdqu	32(%rsi),%xmm2
+	movdqu	48(%rsi),%xmm7
+	pxor	0(%rsp),%xmm6
+	pxor	%xmm12,%xmm11
+	pxor	%xmm4,%xmm2
+	pxor	%xmm0,%xmm7
+	movdqu	%xmm6,0(%rdi)
+	movdqu	%xmm11,16(%rdi)
+	movdqu	%xmm2,32(%rdi)
+	movdqu	%xmm7,48(%rdi)
+	je	.Ldone4x
+
+	movdqa	16(%rsp),%xmm6
+	leaq	64(%rsi),%rsi
+	xorq	%r9,%r9
+	movdqa	%xmm6,0(%rsp)
+	movdqa	%xmm13,16(%rsp)
+	leaq	64(%rdi),%rdi
+	movdqa	%xmm5,32(%rsp)
+	subq	$64,%rdx
+	movdqa	%xmm1,48(%rsp)
+	jmp	.Loop_tail4x
+
+.align	32
+.L128_or_more4x:
+	movdqu	0(%rsi),%xmm6
+	movdqu	16(%rsi),%xmm11
+	movdqu	32(%rsi),%xmm2
+	movdqu	48(%rsi),%xmm7
+	pxor	0(%rsp),%xmm6
+	pxor	%xmm12,%xmm11
+	pxor	%xmm4,%xmm2
+	pxor	%xmm0,%xmm7
+
+	movdqu	%xmm6,0(%rdi)
+	movdqu	64(%rsi),%xmm6
+	movdqu	%xmm11,16(%rdi)
+	movdqu	80(%rsi),%xmm11
+	movdqu	%xmm2,32(%rdi)
+	movdqu	96(%rsi),%xmm2
+	movdqu	%xmm7,48(%rdi)
+	movdqu	112(%rsi),%xmm7
+	pxor	16(%rsp),%xmm6
+	pxor	%xmm13,%xmm11
+	pxor	%xmm5,%xmm2
+	pxor	%xmm1,%xmm7
+	movdqu	%xmm6,64(%rdi)
+	movdqu	%xmm11,80(%rdi)
+	movdqu	%xmm2,96(%rdi)
+	movdqu	%xmm7,112(%rdi)
+	je	.Ldone4x
+
+	movdqa	32(%rsp),%xmm6
+	leaq	128(%rsi),%rsi
+	xorq	%r9,%r9
+	movdqa	%xmm6,0(%rsp)
+	movdqa	%xmm10,16(%rsp)
+	leaq	128(%rdi),%rdi
+	movdqa	%xmm14,32(%rsp)
+	subq	$128,%rdx
+	movdqa	%xmm8,48(%rsp)
+	jmp	.Loop_tail4x
+
+.align	32
+.L192_or_more4x:
+	movdqu	0(%rsi),%xmm6
+	movdqu	16(%rsi),%xmm11
+	movdqu	32(%rsi),%xmm2
+	movdqu	48(%rsi),%xmm7
+	pxor	0(%rsp),%xmm6
+	pxor	%xmm12,%xmm11
+	pxor	%xmm4,%xmm2
+	pxor	%xmm0,%xmm7
+
+	movdqu	%xmm6,0(%rdi)
+	movdqu	64(%rsi),%xmm6
+	movdqu	%xmm11,16(%rdi)
+	movdqu	80(%rsi),%xmm11
+	movdqu	%xmm2,32(%rdi)
+	movdqu	96(%rsi),%xmm2
+	movdqu	%xmm7,48(%rdi)
+	movdqu	112(%rsi),%xmm7
+	leaq	128(%rsi),%rsi
+	pxor	16(%rsp),%xmm6
+	pxor	%xmm13,%xmm11
+	pxor	%xmm5,%xmm2
+	pxor	%xmm1,%xmm7
+
+	movdqu	%xmm6,64(%rdi)
+	movdqu	0(%rsi),%xmm6
+	movdqu	%xmm11,80(%rdi)
+	movdqu	16(%rsi),%xmm11
+	movdqu	%xmm2,96(%rdi)
+	movdqu	32(%rsi),%xmm2
+	movdqu	%xmm7,112(%rdi)
+	leaq	128(%rdi),%rdi
+	movdqu	48(%rsi),%xmm7
+	pxor	32(%rsp),%xmm6
+	pxor	%xmm10,%xmm11
+	pxor	%xmm14,%xmm2
+	pxor	%xmm8,%xmm7
+	movdqu	%xmm6,0(%rdi)
+	movdqu	%xmm11,16(%rdi)
+	movdqu	%xmm2,32(%rdi)
+	movdqu	%xmm7,48(%rdi)
+	je	.Ldone4x
+
+	movdqa	48(%rsp),%xmm6
+	leaq	64(%rsi),%rsi
+	xorq	%r9,%r9
+	movdqa	%xmm6,0(%rsp)
+	movdqa	%xmm15,16(%rsp)
+	leaq	64(%rdi),%rdi
+	movdqa	%xmm9,32(%rsp)
+	subq	$192,%rdx
+	movdqa	%xmm3,48(%rsp)
+
+.Loop_tail4x:
+	movzbl	(%rsi,%r9,1),%eax
+	movzbl	(%rsp,%r9,1),%ecx
+	leaq	1(%r9),%r9
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r9,1)
+	decq	%rdx
+	jnz	.Loop_tail4x
+
+.Ldone4x:
+	leaq	-8(%r10),%rsp
+
+.L4x_epilogue:
+	ret
+ENDPROC(chacha20_ssse3)
+#endif /* CONFIG_AS_SSSE3 */
+
+#ifdef CONFIG_AS_AVX2
+.align	32
+ENTRY(chacha20_avx2)
+.Lchacha20_avx2:
+	cmpq	$0,%rdx
+	je	.L8x_epilogue
+	leaq	8(%rsp),%r10
+
+	subq	$0x280+8,%rsp
+	andq	$-32,%rsp
+	vzeroupper
+
+	vbroadcasti128	.Lsigma(%rip),%ymm11
+	vbroadcasti128	(%rcx),%ymm3
+	vbroadcasti128	16(%rcx),%ymm15
+	vbroadcasti128	(%r8),%ymm7
+	leaq	256(%rsp),%rcx
+	leaq	512(%rsp),%rax
+	leaq	.Lrot16(%rip),%r9
+	leaq	.Lrot24(%rip),%r11
+
+	vpshufd	$0x00,%ymm11,%ymm8
+	vpshufd	$0x55,%ymm11,%ymm9
+	vmovdqa	%ymm8,128-256(%rcx)
+	vpshufd	$0xaa,%ymm11,%ymm10
+	vmovdqa	%ymm9,160-256(%rcx)
+	vpshufd	$0xff,%ymm11,%ymm11
+	vmovdqa	%ymm10,192-256(%rcx)
+	vmovdqa	%ymm11,224-256(%rcx)
+
+	vpshufd	$0x00,%ymm3,%ymm0
+	vpshufd	$0x55,%ymm3,%ymm1
+	vmovdqa	%ymm0,256-256(%rcx)
+	vpshufd	$0xaa,%ymm3,%ymm2
+	vmovdqa	%ymm1,288-256(%rcx)
+	vpshufd	$0xff,%ymm3,%ymm3
+	vmovdqa	%ymm2,320-256(%rcx)
+	vmovdqa	%ymm3,352-256(%rcx)
+
+	vpshufd	$0x00,%ymm15,%ymm12
+	vpshufd	$0x55,%ymm15,%ymm13
+	vmovdqa	%ymm12,384-512(%rax)
+	vpshufd	$0xaa,%ymm15,%ymm14
+	vmovdqa	%ymm13,416-512(%rax)
+	vpshufd	$0xff,%ymm15,%ymm15
+	vmovdqa	%ymm14,448-512(%rax)
+	vmovdqa	%ymm15,480-512(%rax)
+
+	vpshufd	$0x00,%ymm7,%ymm4
+	vpshufd	$0x55,%ymm7,%ymm5
+	vpaddd	.Lincy(%rip),%ymm4,%ymm4
+	vpshufd	$0xaa,%ymm7,%ymm6
+	vmovdqa	%ymm5,544-512(%rax)
+	vpshufd	$0xff,%ymm7,%ymm7
+	vmovdqa	%ymm6,576-512(%rax)
+	vmovdqa	%ymm7,608-512(%rax)
+
+	jmp	.Loop_enter8x
+
+.align	32
+.Loop_outer8x:
+	vmovdqa	128-256(%rcx),%ymm8
+	vmovdqa	160-256(%rcx),%ymm9
+	vmovdqa	192-256(%rcx),%ymm10
+	vmovdqa	224-256(%rcx),%ymm11
+	vmovdqa	256-256(%rcx),%ymm0
+	vmovdqa	288-256(%rcx),%ymm1
+	vmovdqa	320-256(%rcx),%ymm2
+	vmovdqa	352-256(%rcx),%ymm3
+	vmovdqa	384-512(%rax),%ymm12
+	vmovdqa	416-512(%rax),%ymm13
+	vmovdqa	448-512(%rax),%ymm14
+	vmovdqa	480-512(%rax),%ymm15
+	vmovdqa	512-512(%rax),%ymm4
+	vmovdqa	544-512(%rax),%ymm5
+	vmovdqa	576-512(%rax),%ymm6
+	vmovdqa	608-512(%rax),%ymm7
+	vpaddd	.Leight(%rip),%ymm4,%ymm4
+
+.Loop_enter8x:
+	vmovdqa	%ymm14,64(%rsp)
+	vmovdqa	%ymm15,96(%rsp)
+	vbroadcasti128	(%r9),%ymm15
+	vmovdqa	%ymm4,512-512(%rax)
+	movl	$10,%eax
+	jmp	.Loop8x
+
+.align	32
+.Loop8x:
+	vpaddd	%ymm0,%ymm8,%ymm8
+	vpxor	%ymm4,%ymm8,%ymm4
+	vpshufb	%ymm15,%ymm4,%ymm4
+	vpaddd	%ymm1,%ymm9,%ymm9
+	vpxor	%ymm5,%ymm9,%ymm5
+	vpshufb	%ymm15,%ymm5,%ymm5
+	vpaddd	%ymm4,%ymm12,%ymm12
+	vpxor	%ymm0,%ymm12,%ymm0
+	vpslld	$12,%ymm0,%ymm14
+	vpsrld	$20,%ymm0,%ymm0
+	vpor	%ymm0,%ymm14,%ymm0
+	vbroadcasti128	(%r11),%ymm14
+	vpaddd	%ymm5,%ymm13,%ymm13
+	vpxor	%ymm1,%ymm13,%ymm1
+	vpslld	$12,%ymm1,%ymm15
+	vpsrld	$20,%ymm1,%ymm1
+	vpor	%ymm1,%ymm15,%ymm1
+	vpaddd	%ymm0,%ymm8,%ymm8
+	vpxor	%ymm4,%ymm8,%ymm4
+	vpshufb	%ymm14,%ymm4,%ymm4
+	vpaddd	%ymm1,%ymm9,%ymm9
+	vpxor	%ymm5,%ymm9,%ymm5
+	vpshufb	%ymm14,%ymm5,%ymm5
+	vpaddd	%ymm4,%ymm12,%ymm12
+	vpxor	%ymm0,%ymm12,%ymm0
+	vpslld	$7,%ymm0,%ymm15
+	vpsrld	$25,%ymm0,%ymm0
+	vpor	%ymm0,%ymm15,%ymm0
+	vbroadcasti128	(%r9),%ymm15
+	vpaddd	%ymm5,%ymm13,%ymm13
+	vpxor	%ymm1,%ymm13,%ymm1
+	vpslld	$7,%ymm1,%ymm14
+	vpsrld	$25,%ymm1,%ymm1
+	vpor	%ymm1,%ymm14,%ymm1
+	vmovdqa	%ymm12,0(%rsp)
+	vmovdqa	%ymm13,32(%rsp)
+	vmovdqa	64(%rsp),%ymm12
+	vmovdqa	96(%rsp),%ymm13
+	vpaddd	%ymm2,%ymm10,%ymm10
+	vpxor	%ymm6,%ymm10,%ymm6
+	vpshufb	%ymm15,%ymm6,%ymm6
+	vpaddd	%ymm3,%ymm11,%ymm11
+	vpxor	%ymm7,%ymm11,%ymm7
+	vpshufb	%ymm15,%ymm7,%ymm7
+	vpaddd	%ymm6,%ymm12,%ymm12
+	vpxor	%ymm2,%ymm12,%ymm2
+	vpslld	$12,%ymm2,%ymm14
+	vpsrld	$20,%ymm2,%ymm2
+	vpor	%ymm2,%ymm14,%ymm2
+	vbroadcasti128	(%r11),%ymm14
+	vpaddd	%ymm7,%ymm13,%ymm13
+	vpxor	%ymm3,%ymm13,%ymm3
+	vpslld	$12,%ymm3,%ymm15
+	vpsrld	$20,%ymm3,%ymm3
+	vpor	%ymm3,%ymm15,%ymm3
+	vpaddd	%ymm2,%ymm10,%ymm10
+	vpxor	%ymm6,%ymm10,%ymm6
+	vpshufb	%ymm14,%ymm6,%ymm6
+	vpaddd	%ymm3,%ymm11,%ymm11
+	vpxor	%ymm7,%ymm11,%ymm7
+	vpshufb	%ymm14,%ymm7,%ymm7
+	vpaddd	%ymm6,%ymm12,%ymm12
+	vpxor	%ymm2,%ymm12,%ymm2
+	vpslld	$7,%ymm2,%ymm15
+	vpsrld	$25,%ymm2,%ymm2
+	vpor	%ymm2,%ymm15,%ymm2
+	vbroadcasti128	(%r9),%ymm15
+	vpaddd	%ymm7,%ymm13,%ymm13
+	vpxor	%ymm3,%ymm13,%ymm3
+	vpslld	$7,%ymm3,%ymm14
+	vpsrld	$25,%ymm3,%ymm3
+	vpor	%ymm3,%ymm14,%ymm3
+	vpaddd	%ymm1,%ymm8,%ymm8
+	vpxor	%ymm7,%ymm8,%ymm7
+	vpshufb	%ymm15,%ymm7,%ymm7
+	vpaddd	%ymm2,%ymm9,%ymm9
+	vpxor	%ymm4,%ymm9,%ymm4
+	vpshufb	%ymm15,%ymm4,%ymm4
+	vpaddd	%ymm7,%ymm12,%ymm12
+	vpxor	%ymm1,%ymm12,%ymm1
+	vpslld	$12,%ymm1,%ymm14
+	vpsrld	$20,%ymm1,%ymm1
+	vpor	%ymm1,%ymm14,%ymm1
+	vbroadcasti128	(%r11),%ymm14
+	vpaddd	%ymm4,%ymm13,%ymm13
+	vpxor	%ymm2,%ymm13,%ymm2
+	vpslld	$12,%ymm2,%ymm15
+	vpsrld	$20,%ymm2,%ymm2
+	vpor	%ymm2,%ymm15,%ymm2
+	vpaddd	%ymm1,%ymm8,%ymm8
+	vpxor	%ymm7,%ymm8,%ymm7
+	vpshufb	%ymm14,%ymm7,%ymm7
+	vpaddd	%ymm2,%ymm9,%ymm9
+	vpxor	%ymm4,%ymm9,%ymm4
+	vpshufb	%ymm14,%ymm4,%ymm4
+	vpaddd	%ymm7,%ymm12,%ymm12
+	vpxor	%ymm1,%ymm12,%ymm1
+	vpslld	$7,%ymm1,%ymm15
+	vpsrld	$25,%ymm1,%ymm1
+	vpor	%ymm1,%ymm15,%ymm1
+	vbroadcasti128	(%r9),%ymm15
+	vpaddd	%ymm4,%ymm13,%ymm13
+	vpxor	%ymm2,%ymm13,%ymm2
+	vpslld	$7,%ymm2,%ymm14
+	vpsrld	$25,%ymm2,%ymm2
+	vpor	%ymm2,%ymm14,%ymm2
+	vmovdqa	%ymm12,64(%rsp)
+	vmovdqa	%ymm13,96(%rsp)
+	vmovdqa	0(%rsp),%ymm12
+	vmovdqa	32(%rsp),%ymm13
+	vpaddd	%ymm3,%ymm10,%ymm10
+	vpxor	%ymm5,%ymm10,%ymm5
+	vpshufb	%ymm15,%ymm5,%ymm5
+	vpaddd	%ymm0,%ymm11,%ymm11
+	vpxor	%ymm6,%ymm11,%ymm6
+	vpshufb	%ymm15,%ymm6,%ymm6
+	vpaddd	%ymm5,%ymm12,%ymm12
+	vpxor	%ymm3,%ymm12,%ymm3
+	vpslld	$12,%ymm3,%ymm14
+	vpsrld	$20,%ymm3,%ymm3
+	vpor	%ymm3,%ymm14,%ymm3
+	vbroadcasti128	(%r11),%ymm14
+	vpaddd	%ymm6,%ymm13,%ymm13
+	vpxor	%ymm0,%ymm13,%ymm0
+	vpslld	$12,%ymm0,%ymm15
+	vpsrld	$20,%ymm0,%ymm0
+	vpor	%ymm0,%ymm15,%ymm0
+	vpaddd	%ymm3,%ymm10,%ymm10
+	vpxor	%ymm5,%ymm10,%ymm5
+	vpshufb	%ymm14,%ymm5,%ymm5
+	vpaddd	%ymm0,%ymm11,%ymm11
+	vpxor	%ymm6,%ymm11,%ymm6
+	vpshufb	%ymm14,%ymm6,%ymm6
+	vpaddd	%ymm5,%ymm12,%ymm12
+	vpxor	%ymm3,%ymm12,%ymm3
+	vpslld	$7,%ymm3,%ymm15
+	vpsrld	$25,%ymm3,%ymm3
+	vpor	%ymm3,%ymm15,%ymm3
+	vbroadcasti128	(%r9),%ymm15
+	vpaddd	%ymm6,%ymm13,%ymm13
+	vpxor	%ymm0,%ymm13,%ymm0
+	vpslld	$7,%ymm0,%ymm14
+	vpsrld	$25,%ymm0,%ymm0
+	vpor	%ymm0,%ymm14,%ymm0
+	decl	%eax
+	jnz	.Loop8x
+
+	leaq	512(%rsp),%rax
+	vpaddd	128-256(%rcx),%ymm8,%ymm8
+	vpaddd	160-256(%rcx),%ymm9,%ymm9
+	vpaddd	192-256(%rcx),%ymm10,%ymm10
+	vpaddd	224-256(%rcx),%ymm11,%ymm11
+
+	vpunpckldq	%ymm9,%ymm8,%ymm14
+	vpunpckldq	%ymm11,%ymm10,%ymm15
+	vpunpckhdq	%ymm9,%ymm8,%ymm8
+	vpunpckhdq	%ymm11,%ymm10,%ymm10
+	vpunpcklqdq	%ymm15,%ymm14,%ymm9
+	vpunpckhqdq	%ymm15,%ymm14,%ymm14
+	vpunpcklqdq	%ymm10,%ymm8,%ymm11
+	vpunpckhqdq	%ymm10,%ymm8,%ymm8
+	vpaddd	256-256(%rcx),%ymm0,%ymm0
+	vpaddd	288-256(%rcx),%ymm1,%ymm1
+	vpaddd	320-256(%rcx),%ymm2,%ymm2
+	vpaddd	352-256(%rcx),%ymm3,%ymm3
+
+	vpunpckldq	%ymm1,%ymm0,%ymm10
+	vpunpckldq	%ymm3,%ymm2,%ymm15
+	vpunpckhdq	%ymm1,%ymm0,%ymm0
+	vpunpckhdq	%ymm3,%ymm2,%ymm2
+	vpunpcklqdq	%ymm15,%ymm10,%ymm1
+	vpunpckhqdq	%ymm15,%ymm10,%ymm10
+	vpunpcklqdq	%ymm2,%ymm0,%ymm3
+	vpunpckhqdq	%ymm2,%ymm0,%ymm0
+	vperm2i128	$0x20,%ymm1,%ymm9,%ymm15
+	vperm2i128	$0x31,%ymm1,%ymm9,%ymm1
+	vperm2i128	$0x20,%ymm10,%ymm14,%ymm9
+	vperm2i128	$0x31,%ymm10,%ymm14,%ymm10
+	vperm2i128	$0x20,%ymm3,%ymm11,%ymm14
+	vperm2i128	$0x31,%ymm3,%ymm11,%ymm3
+	vperm2i128	$0x20,%ymm0,%ymm8,%ymm11
+	vperm2i128	$0x31,%ymm0,%ymm8,%ymm0
+	vmovdqa	%ymm15,0(%rsp)
+	vmovdqa	%ymm9,32(%rsp)
+	vmovdqa	64(%rsp),%ymm15
+	vmovdqa	96(%rsp),%ymm9
+
+	vpaddd	384-512(%rax),%ymm12,%ymm12
+	vpaddd	416-512(%rax),%ymm13,%ymm13
+	vpaddd	448-512(%rax),%ymm15,%ymm15
+	vpaddd	480-512(%rax),%ymm9,%ymm9
+
+	vpunpckldq	%ymm13,%ymm12,%ymm2
+	vpunpckldq	%ymm9,%ymm15,%ymm8
+	vpunpckhdq	%ymm13,%ymm12,%ymm12
+	vpunpckhdq	%ymm9,%ymm15,%ymm15
+	vpunpcklqdq	%ymm8,%ymm2,%ymm13
+	vpunpckhqdq	%ymm8,%ymm2,%ymm2
+	vpunpcklqdq	%ymm15,%ymm12,%ymm9
+	vpunpckhqdq	%ymm15,%ymm12,%ymm12
+	vpaddd	512-512(%rax),%ymm4,%ymm4
+	vpaddd	544-512(%rax),%ymm5,%ymm5
+	vpaddd	576-512(%rax),%ymm6,%ymm6
+	vpaddd	608-512(%rax),%ymm7,%ymm7
+
+	vpunpckldq	%ymm5,%ymm4,%ymm15
+	vpunpckldq	%ymm7,%ymm6,%ymm8
+	vpunpckhdq	%ymm5,%ymm4,%ymm4
+	vpunpckhdq	%ymm7,%ymm6,%ymm6
+	vpunpcklqdq	%ymm8,%ymm15,%ymm5
+	vpunpckhqdq	%ymm8,%ymm15,%ymm15
+	vpunpcklqdq	%ymm6,%ymm4,%ymm7
+	vpunpckhqdq	%ymm6,%ymm4,%ymm4
+	vperm2i128	$0x20,%ymm5,%ymm13,%ymm8
+	vperm2i128	$0x31,%ymm5,%ymm13,%ymm5
+	vperm2i128	$0x20,%ymm15,%ymm2,%ymm13
+	vperm2i128	$0x31,%ymm15,%ymm2,%ymm15
+	vperm2i128	$0x20,%ymm7,%ymm9,%ymm2
+	vperm2i128	$0x31,%ymm7,%ymm9,%ymm7
+	vperm2i128	$0x20,%ymm4,%ymm12,%ymm9
+	vperm2i128	$0x31,%ymm4,%ymm12,%ymm4
+	vmovdqa	0(%rsp),%ymm6
+	vmovdqa	32(%rsp),%ymm12
+
+	cmpq	$512,%rdx
+	jb	.Ltail8x
+
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	leaq	128(%rsi),%rsi
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	leaq	128(%rdi),%rdi
+
+	vpxor	0(%rsi),%ymm12,%ymm12
+	vpxor	32(%rsi),%ymm13,%ymm13
+	vpxor	64(%rsi),%ymm10,%ymm10
+	vpxor	96(%rsi),%ymm15,%ymm15
+	leaq	128(%rsi),%rsi
+	vmovdqu	%ymm12,0(%rdi)
+	vmovdqu	%ymm13,32(%rdi)
+	vmovdqu	%ymm10,64(%rdi)
+	vmovdqu	%ymm15,96(%rdi)
+	leaq	128(%rdi),%rdi
+
+	vpxor	0(%rsi),%ymm14,%ymm14
+	vpxor	32(%rsi),%ymm2,%ymm2
+	vpxor	64(%rsi),%ymm3,%ymm3
+	vpxor	96(%rsi),%ymm7,%ymm7
+	leaq	128(%rsi),%rsi
+	vmovdqu	%ymm14,0(%rdi)
+	vmovdqu	%ymm2,32(%rdi)
+	vmovdqu	%ymm3,64(%rdi)
+	vmovdqu	%ymm7,96(%rdi)
+	leaq	128(%rdi),%rdi
+
+	vpxor	0(%rsi),%ymm11,%ymm11
+	vpxor	32(%rsi),%ymm9,%ymm9
+	vpxor	64(%rsi),%ymm0,%ymm0
+	vpxor	96(%rsi),%ymm4,%ymm4
+	leaq	128(%rsi),%rsi
+	vmovdqu	%ymm11,0(%rdi)
+	vmovdqu	%ymm9,32(%rdi)
+	vmovdqu	%ymm0,64(%rdi)
+	vmovdqu	%ymm4,96(%rdi)
+	leaq	128(%rdi),%rdi
+
+	subq	$512,%rdx
+	jnz	.Loop_outer8x
+
+	jmp	.Ldone8x
+
+.Ltail8x:
+	cmpq	$448,%rdx
+	jae	.L448_or_more8x
+	cmpq	$384,%rdx
+	jae	.L384_or_more8x
+	cmpq	$320,%rdx
+	jae	.L320_or_more8x
+	cmpq	$256,%rdx
+	jae	.L256_or_more8x
+	cmpq	$192,%rdx
+	jae	.L192_or_more8x
+	cmpq	$128,%rdx
+	jae	.L128_or_more8x
+	cmpq	$64,%rdx
+	jae	.L64_or_more8x
+
+	xorq	%r9,%r9
+	vmovdqa	%ymm6,0(%rsp)
+	vmovdqa	%ymm8,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L64_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	je	.Ldone8x
+
+	leaq	64(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm1,0(%rsp)
+	leaq	64(%rdi),%rdi
+	subq	$64,%rdx
+	vmovdqa	%ymm5,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L128_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	je	.Ldone8x
+
+	leaq	128(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm12,0(%rsp)
+	leaq	128(%rdi),%rdi
+	subq	$128,%rdx
+	vmovdqa	%ymm13,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L192_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	vpxor	128(%rsi),%ymm12,%ymm12
+	vpxor	160(%rsi),%ymm13,%ymm13
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	vmovdqu	%ymm12,128(%rdi)
+	vmovdqu	%ymm13,160(%rdi)
+	je	.Ldone8x
+
+	leaq	192(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm10,0(%rsp)
+	leaq	192(%rdi),%rdi
+	subq	$192,%rdx
+	vmovdqa	%ymm15,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L256_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	vpxor	128(%rsi),%ymm12,%ymm12
+	vpxor	160(%rsi),%ymm13,%ymm13
+	vpxor	192(%rsi),%ymm10,%ymm10
+	vpxor	224(%rsi),%ymm15,%ymm15
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	vmovdqu	%ymm12,128(%rdi)
+	vmovdqu	%ymm13,160(%rdi)
+	vmovdqu	%ymm10,192(%rdi)
+	vmovdqu	%ymm15,224(%rdi)
+	je	.Ldone8x
+
+	leaq	256(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm14,0(%rsp)
+	leaq	256(%rdi),%rdi
+	subq	$256,%rdx
+	vmovdqa	%ymm2,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L320_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	vpxor	128(%rsi),%ymm12,%ymm12
+	vpxor	160(%rsi),%ymm13,%ymm13
+	vpxor	192(%rsi),%ymm10,%ymm10
+	vpxor	224(%rsi),%ymm15,%ymm15
+	vpxor	256(%rsi),%ymm14,%ymm14
+	vpxor	288(%rsi),%ymm2,%ymm2
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	vmovdqu	%ymm12,128(%rdi)
+	vmovdqu	%ymm13,160(%rdi)
+	vmovdqu	%ymm10,192(%rdi)
+	vmovdqu	%ymm15,224(%rdi)
+	vmovdqu	%ymm14,256(%rdi)
+	vmovdqu	%ymm2,288(%rdi)
+	je	.Ldone8x
+
+	leaq	320(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm3,0(%rsp)
+	leaq	320(%rdi),%rdi
+	subq	$320,%rdx
+	vmovdqa	%ymm7,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L384_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	vpxor	128(%rsi),%ymm12,%ymm12
+	vpxor	160(%rsi),%ymm13,%ymm13
+	vpxor	192(%rsi),%ymm10,%ymm10
+	vpxor	224(%rsi),%ymm15,%ymm15
+	vpxor	256(%rsi),%ymm14,%ymm14
+	vpxor	288(%rsi),%ymm2,%ymm2
+	vpxor	320(%rsi),%ymm3,%ymm3
+	vpxor	352(%rsi),%ymm7,%ymm7
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	vmovdqu	%ymm12,128(%rdi)
+	vmovdqu	%ymm13,160(%rdi)
+	vmovdqu	%ymm10,192(%rdi)
+	vmovdqu	%ymm15,224(%rdi)
+	vmovdqu	%ymm14,256(%rdi)
+	vmovdqu	%ymm2,288(%rdi)
+	vmovdqu	%ymm3,320(%rdi)
+	vmovdqu	%ymm7,352(%rdi)
+	je	.Ldone8x
+
+	leaq	384(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm11,0(%rsp)
+	leaq	384(%rdi),%rdi
+	subq	$384,%rdx
+	vmovdqa	%ymm9,32(%rsp)
+	jmp	.Loop_tail8x
+
+.align	32
+.L448_or_more8x:
+	vpxor	0(%rsi),%ymm6,%ymm6
+	vpxor	32(%rsi),%ymm8,%ymm8
+	vpxor	64(%rsi),%ymm1,%ymm1
+	vpxor	96(%rsi),%ymm5,%ymm5
+	vpxor	128(%rsi),%ymm12,%ymm12
+	vpxor	160(%rsi),%ymm13,%ymm13
+	vpxor	192(%rsi),%ymm10,%ymm10
+	vpxor	224(%rsi),%ymm15,%ymm15
+	vpxor	256(%rsi),%ymm14,%ymm14
+	vpxor	288(%rsi),%ymm2,%ymm2
+	vpxor	320(%rsi),%ymm3,%ymm3
+	vpxor	352(%rsi),%ymm7,%ymm7
+	vpxor	384(%rsi),%ymm11,%ymm11
+	vpxor	416(%rsi),%ymm9,%ymm9
+	vmovdqu	%ymm6,0(%rdi)
+	vmovdqu	%ymm8,32(%rdi)
+	vmovdqu	%ymm1,64(%rdi)
+	vmovdqu	%ymm5,96(%rdi)
+	vmovdqu	%ymm12,128(%rdi)
+	vmovdqu	%ymm13,160(%rdi)
+	vmovdqu	%ymm10,192(%rdi)
+	vmovdqu	%ymm15,224(%rdi)
+	vmovdqu	%ymm14,256(%rdi)
+	vmovdqu	%ymm2,288(%rdi)
+	vmovdqu	%ymm3,320(%rdi)
+	vmovdqu	%ymm7,352(%rdi)
+	vmovdqu	%ymm11,384(%rdi)
+	vmovdqu	%ymm9,416(%rdi)
+	je	.Ldone8x
+
+	leaq	448(%rsi),%rsi
+	xorq	%r9,%r9
+	vmovdqa	%ymm0,0(%rsp)
+	leaq	448(%rdi),%rdi
+	subq	$448,%rdx
+	vmovdqa	%ymm4,32(%rsp)
+
+.Loop_tail8x:
+	movzbl	(%rsi,%r9,1),%eax
+	movzbl	(%rsp,%r9,1),%ecx
+	leaq	1(%r9),%r9
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r9,1)
+	decq	%rdx
+	jnz	.Loop_tail8x
+
+.Ldone8x:
+	vzeroall
+	leaq	-8(%r10),%rsp
+
+.L8x_epilogue:
+	ret
+ENDPROC(chacha20_avx2)
+#endif /* CONFIG_AS_AVX2 */
+
+#ifdef CONFIG_AS_AVX512
+.align	32
+ENTRY(chacha20_avx512)
+.Lchacha20_avx512:
+	cmpq	$0,%rdx
+	je	.Lavx512_epilogue
+	leaq	8(%rsp),%r10
+
+	cmpq	$512,%rdx
+	ja	.Lchacha20_16x
+
+	subq	$64+8,%rsp
+	andq	$-64,%rsp
+	vbroadcasti32x4	.Lsigma(%rip),%zmm0
+	vbroadcasti32x4	(%rcx),%zmm1
+	vbroadcasti32x4	16(%rcx),%zmm2
+	vbroadcasti32x4	(%r8),%zmm3
+
+	vmovdqa32	%zmm0,%zmm16
+	vmovdqa32	%zmm1,%zmm17
+	vmovdqa32	%zmm2,%zmm18
+	vpaddd	.Lzeroz(%rip),%zmm3,%zmm3
+	vmovdqa32	.Lfourz(%rip),%zmm20
+	movq	$10,%r8
+	vmovdqa32	%zmm3,%zmm19
+	jmp	.Loop_avx512
+
+.align	16
+.Loop_outer_avx512:
+	vmovdqa32	%zmm16,%zmm0
+	vmovdqa32	%zmm17,%zmm1
+	vmovdqa32	%zmm18,%zmm2
+	vpaddd	%zmm20,%zmm19,%zmm3
+	movq	$10,%r8
+	vmovdqa32	%zmm3,%zmm19
+	jmp	.Loop_avx512
+
+.align	32
+.Loop_avx512:
+	vpaddd	%zmm1,%zmm0,%zmm0
+	vpxord	%zmm0,%zmm3,%zmm3
+	vprold	$16,%zmm3,%zmm3
+	vpaddd	%zmm3,%zmm2,%zmm2
+	vpxord	%zmm2,%zmm1,%zmm1
+	vprold	$12,%zmm1,%zmm1
+	vpaddd	%zmm1,%zmm0,%zmm0
+	vpxord	%zmm0,%zmm3,%zmm3
+	vprold	$8,%zmm3,%zmm3
+	vpaddd	%zmm3,%zmm2,%zmm2
+	vpxord	%zmm2,%zmm1,%zmm1
+	vprold	$7,%zmm1,%zmm1
+	vpshufd	$78,%zmm2,%zmm2
+	vpshufd	$57,%zmm1,%zmm1
+	vpshufd	$147,%zmm3,%zmm3
+	vpaddd	%zmm1,%zmm0,%zmm0
+	vpxord	%zmm0,%zmm3,%zmm3
+	vprold	$16,%zmm3,%zmm3
+	vpaddd	%zmm3,%zmm2,%zmm2
+	vpxord	%zmm2,%zmm1,%zmm1
+	vprold	$12,%zmm1,%zmm1
+	vpaddd	%zmm1,%zmm0,%zmm0
+	vpxord	%zmm0,%zmm3,%zmm3
+	vprold	$8,%zmm3,%zmm3
+	vpaddd	%zmm3,%zmm2,%zmm2
+	vpxord	%zmm2,%zmm1,%zmm1
+	vprold	$7,%zmm1,%zmm1
+	vpshufd	$78,%zmm2,%zmm2
+	vpshufd	$147,%zmm1,%zmm1
+	vpshufd	$57,%zmm3,%zmm3
+	decq	%r8
+	jnz	.Loop_avx512
+	vpaddd	%zmm16,%zmm0,%zmm0
+	vpaddd	%zmm17,%zmm1,%zmm1
+	vpaddd	%zmm18,%zmm2,%zmm2
+	vpaddd	%zmm19,%zmm3,%zmm3
+
+	subq	$64,%rdx
+	jb	.Ltail64_avx512
+
+	vpxor	0(%rsi),%xmm0,%xmm4
+	vpxor	16(%rsi),%xmm1,%xmm5
+	vpxor	32(%rsi),%xmm2,%xmm6
+	vpxor	48(%rsi),%xmm3,%xmm7
+	leaq	64(%rsi),%rsi
+
+	vmovdqu	%xmm4,0(%rdi)
+	vmovdqu	%xmm5,16(%rdi)
+	vmovdqu	%xmm6,32(%rdi)
+	vmovdqu	%xmm7,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	jz	.Ldone_avx512
+
+	vextracti32x4	$1,%zmm0,%xmm4
+	vextracti32x4	$1,%zmm1,%xmm5
+	vextracti32x4	$1,%zmm2,%xmm6
+	vextracti32x4	$1,%zmm3,%xmm7
+
+	subq	$64,%rdx
+	jb	.Ltail_avx512
+
+	vpxor	0(%rsi),%xmm4,%xmm4
+	vpxor	16(%rsi),%xmm5,%xmm5
+	vpxor	32(%rsi),%xmm6,%xmm6
+	vpxor	48(%rsi),%xmm7,%xmm7
+	leaq	64(%rsi),%rsi
+
+	vmovdqu	%xmm4,0(%rdi)
+	vmovdqu	%xmm5,16(%rdi)
+	vmovdqu	%xmm6,32(%rdi)
+	vmovdqu	%xmm7,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	jz	.Ldone_avx512
+
+	vextracti32x4	$2,%zmm0,%xmm4
+	vextracti32x4	$2,%zmm1,%xmm5
+	vextracti32x4	$2,%zmm2,%xmm6
+	vextracti32x4	$2,%zmm3,%xmm7
+
+	subq	$64,%rdx
+	jb	.Ltail_avx512
+
+	vpxor	0(%rsi),%xmm4,%xmm4
+	vpxor	16(%rsi),%xmm5,%xmm5
+	vpxor	32(%rsi),%xmm6,%xmm6
+	vpxor	48(%rsi),%xmm7,%xmm7
+	leaq	64(%rsi),%rsi
+
+	vmovdqu	%xmm4,0(%rdi)
+	vmovdqu	%xmm5,16(%rdi)
+	vmovdqu	%xmm6,32(%rdi)
+	vmovdqu	%xmm7,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	jz	.Ldone_avx512
+
+	vextracti32x4	$3,%zmm0,%xmm4
+	vextracti32x4	$3,%zmm1,%xmm5
+	vextracti32x4	$3,%zmm2,%xmm6
+	vextracti32x4	$3,%zmm3,%xmm7
+
+	subq	$64,%rdx
+	jb	.Ltail_avx512
+
+	vpxor	0(%rsi),%xmm4,%xmm4
+	vpxor	16(%rsi),%xmm5,%xmm5
+	vpxor	32(%rsi),%xmm6,%xmm6
+	vpxor	48(%rsi),%xmm7,%xmm7
+	leaq	64(%rsi),%rsi
+
+	vmovdqu	%xmm4,0(%rdi)
+	vmovdqu	%xmm5,16(%rdi)
+	vmovdqu	%xmm6,32(%rdi)
+	vmovdqu	%xmm7,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	jnz	.Loop_outer_avx512
+
+	jmp	.Ldone_avx512
+
+.align	16
+.Ltail64_avx512:
+	vmovdqa	%xmm0,0(%rsp)
+	vmovdqa	%xmm1,16(%rsp)
+	vmovdqa	%xmm2,32(%rsp)
+	vmovdqa	%xmm3,48(%rsp)
+	addq	$64,%rdx
+	jmp	.Loop_tail_avx512
+
+.align	16
+.Ltail_avx512:
+	vmovdqa	%xmm4,0(%rsp)
+	vmovdqa	%xmm5,16(%rsp)
+	vmovdqa	%xmm6,32(%rsp)
+	vmovdqa	%xmm7,48(%rsp)
+	addq	$64,%rdx
+
+.Loop_tail_avx512:
+	movzbl	(%rsi,%r8,1),%eax
+	movzbl	(%rsp,%r8,1),%ecx
+	leaq	1(%r8),%r8
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r8,1)
+	decq	%rdx
+	jnz	.Loop_tail_avx512
+
+	vmovdqa32	%zmm16,0(%rsp)
+
+.Ldone_avx512:
+	vzeroall
+	leaq	-8(%r10),%rsp
+
+.Lavx512_epilogue:
+	ret
+
+.align	32
+.Lchacha20_16x:
+	leaq	8(%rsp),%r10
+
+	subq	$64+8,%rsp
+	andq	$-64,%rsp
+	vzeroupper
+
+	leaq	.Lsigma(%rip),%r9
+	vbroadcasti32x4	(%r9),%zmm3
+	vbroadcasti32x4	(%rcx),%zmm7
+	vbroadcasti32x4	16(%rcx),%zmm11
+	vbroadcasti32x4	(%r8),%zmm15
+
+	vpshufd	$0x00,%zmm3,%zmm0
+	vpshufd	$0x55,%zmm3,%zmm1
+	vpshufd	$0xaa,%zmm3,%zmm2
+	vpshufd	$0xff,%zmm3,%zmm3
+	vmovdqa64	%zmm0,%zmm16
+	vmovdqa64	%zmm1,%zmm17
+	vmovdqa64	%zmm2,%zmm18
+	vmovdqa64	%zmm3,%zmm19
+
+	vpshufd	$0x00,%zmm7,%zmm4
+	vpshufd	$0x55,%zmm7,%zmm5
+	vpshufd	$0xaa,%zmm7,%zmm6
+	vpshufd	$0xff,%zmm7,%zmm7
+	vmovdqa64	%zmm4,%zmm20
+	vmovdqa64	%zmm5,%zmm21
+	vmovdqa64	%zmm6,%zmm22
+	vmovdqa64	%zmm7,%zmm23
+
+	vpshufd	$0x00,%zmm11,%zmm8
+	vpshufd	$0x55,%zmm11,%zmm9
+	vpshufd	$0xaa,%zmm11,%zmm10
+	vpshufd	$0xff,%zmm11,%zmm11
+	vmovdqa64	%zmm8,%zmm24
+	vmovdqa64	%zmm9,%zmm25
+	vmovdqa64	%zmm10,%zmm26
+	vmovdqa64	%zmm11,%zmm27
+
+	vpshufd	$0x00,%zmm15,%zmm12
+	vpshufd	$0x55,%zmm15,%zmm13
+	vpshufd	$0xaa,%zmm15,%zmm14
+	vpshufd	$0xff,%zmm15,%zmm15
+	vpaddd	.Lincz(%rip),%zmm12,%zmm12
+	vmovdqa64	%zmm12,%zmm28
+	vmovdqa64	%zmm13,%zmm29
+	vmovdqa64	%zmm14,%zmm30
+	vmovdqa64	%zmm15,%zmm31
+
+	movl	$10,%eax
+	jmp	.Loop16x
+
+.align	32
+.Loop_outer16x:
+	vpbroadcastd	0(%r9),%zmm0
+	vpbroadcastd	4(%r9),%zmm1
+	vpbroadcastd	8(%r9),%zmm2
+	vpbroadcastd	12(%r9),%zmm3
+	vpaddd	.Lsixteen(%rip),%zmm28,%zmm28
+	vmovdqa64	%zmm20,%zmm4
+	vmovdqa64	%zmm21,%zmm5
+	vmovdqa64	%zmm22,%zmm6
+	vmovdqa64	%zmm23,%zmm7
+	vmovdqa64	%zmm24,%zmm8
+	vmovdqa64	%zmm25,%zmm9
+	vmovdqa64	%zmm26,%zmm10
+	vmovdqa64	%zmm27,%zmm11
+	vmovdqa64	%zmm28,%zmm12
+	vmovdqa64	%zmm29,%zmm13
+	vmovdqa64	%zmm30,%zmm14
+	vmovdqa64	%zmm31,%zmm15
+
+	vmovdqa64	%zmm0,%zmm16
+	vmovdqa64	%zmm1,%zmm17
+	vmovdqa64	%zmm2,%zmm18
+	vmovdqa64	%zmm3,%zmm19
+
+	movl	$10,%eax
+	jmp	.Loop16x
+
+.align	32
+.Loop16x:
+	vpaddd	%zmm4,%zmm0,%zmm0
+	vpaddd	%zmm5,%zmm1,%zmm1
+	vpaddd	%zmm6,%zmm2,%zmm2
+	vpaddd	%zmm7,%zmm3,%zmm3
+	vpxord	%zmm0,%zmm12,%zmm12
+	vpxord	%zmm1,%zmm13,%zmm13
+	vpxord	%zmm2,%zmm14,%zmm14
+	vpxord	%zmm3,%zmm15,%zmm15
+	vprold	$16,%zmm12,%zmm12
+	vprold	$16,%zmm13,%zmm13
+	vprold	$16,%zmm14,%zmm14
+	vprold	$16,%zmm15,%zmm15
+	vpaddd	%zmm12,%zmm8,%zmm8
+	vpaddd	%zmm13,%zmm9,%zmm9
+	vpaddd	%zmm14,%zmm10,%zmm10
+	vpaddd	%zmm15,%zmm11,%zmm11
+	vpxord	%zmm8,%zmm4,%zmm4
+	vpxord	%zmm9,%zmm5,%zmm5
+	vpxord	%zmm10,%zmm6,%zmm6
+	vpxord	%zmm11,%zmm7,%zmm7
+	vprold	$12,%zmm4,%zmm4
+	vprold	$12,%zmm5,%zmm5
+	vprold	$12,%zmm6,%zmm6
+	vprold	$12,%zmm7,%zmm7
+	vpaddd	%zmm4,%zmm0,%zmm0
+	vpaddd	%zmm5,%zmm1,%zmm1
+	vpaddd	%zmm6,%zmm2,%zmm2
+	vpaddd	%zmm7,%zmm3,%zmm3
+	vpxord	%zmm0,%zmm12,%zmm12
+	vpxord	%zmm1,%zmm13,%zmm13
+	vpxord	%zmm2,%zmm14,%zmm14
+	vpxord	%zmm3,%zmm15,%zmm15
+	vprold	$8,%zmm12,%zmm12
+	vprold	$8,%zmm13,%zmm13
+	vprold	$8,%zmm14,%zmm14
+	vprold	$8,%zmm15,%zmm15
+	vpaddd	%zmm12,%zmm8,%zmm8
+	vpaddd	%zmm13,%zmm9,%zmm9
+	vpaddd	%zmm14,%zmm10,%zmm10
+	vpaddd	%zmm15,%zmm11,%zmm11
+	vpxord	%zmm8,%zmm4,%zmm4
+	vpxord	%zmm9,%zmm5,%zmm5
+	vpxord	%zmm10,%zmm6,%zmm6
+	vpxord	%zmm11,%zmm7,%zmm7
+	vprold	$7,%zmm4,%zmm4
+	vprold	$7,%zmm5,%zmm5
+	vprold	$7,%zmm6,%zmm6
+	vprold	$7,%zmm7,%zmm7
+	vpaddd	%zmm5,%zmm0,%zmm0
+	vpaddd	%zmm6,%zmm1,%zmm1
+	vpaddd	%zmm7,%zmm2,%zmm2
+	vpaddd	%zmm4,%zmm3,%zmm3
+	vpxord	%zmm0,%zmm15,%zmm15
+	vpxord	%zmm1,%zmm12,%zmm12
+	vpxord	%zmm2,%zmm13,%zmm13
+	vpxord	%zmm3,%zmm14,%zmm14
+	vprold	$16,%zmm15,%zmm15
+	vprold	$16,%zmm12,%zmm12
+	vprold	$16,%zmm13,%zmm13
+	vprold	$16,%zmm14,%zmm14
+	vpaddd	%zmm15,%zmm10,%zmm10
+	vpaddd	%zmm12,%zmm11,%zmm11
+	vpaddd	%zmm13,%zmm8,%zmm8
+	vpaddd	%zmm14,%zmm9,%zmm9
+	vpxord	%zmm10,%zmm5,%zmm5
+	vpxord	%zmm11,%zmm6,%zmm6
+	vpxord	%zmm8,%zmm7,%zmm7
+	vpxord	%zmm9,%zmm4,%zmm4
+	vprold	$12,%zmm5,%zmm5
+	vprold	$12,%zmm6,%zmm6
+	vprold	$12,%zmm7,%zmm7
+	vprold	$12,%zmm4,%zmm4
+	vpaddd	%zmm5,%zmm0,%zmm0
+	vpaddd	%zmm6,%zmm1,%zmm1
+	vpaddd	%zmm7,%zmm2,%zmm2
+	vpaddd	%zmm4,%zmm3,%zmm3
+	vpxord	%zmm0,%zmm15,%zmm15
+	vpxord	%zmm1,%zmm12,%zmm12
+	vpxord	%zmm2,%zmm13,%zmm13
+	vpxord	%zmm3,%zmm14,%zmm14
+	vprold	$8,%zmm15,%zmm15
+	vprold	$8,%zmm12,%zmm12
+	vprold	$8,%zmm13,%zmm13
+	vprold	$8,%zmm14,%zmm14
+	vpaddd	%zmm15,%zmm10,%zmm10
+	vpaddd	%zmm12,%zmm11,%zmm11
+	vpaddd	%zmm13,%zmm8,%zmm8
+	vpaddd	%zmm14,%zmm9,%zmm9
+	vpxord	%zmm10,%zmm5,%zmm5
+	vpxord	%zmm11,%zmm6,%zmm6
+	vpxord	%zmm8,%zmm7,%zmm7
+	vpxord	%zmm9,%zmm4,%zmm4
+	vprold	$7,%zmm5,%zmm5
+	vprold	$7,%zmm6,%zmm6
+	vprold	$7,%zmm7,%zmm7
+	vprold	$7,%zmm4,%zmm4
+	decl	%eax
+	jnz	.Loop16x
+
+	vpaddd	%zmm16,%zmm0,%zmm0
+	vpaddd	%zmm17,%zmm1,%zmm1
+	vpaddd	%zmm18,%zmm2,%zmm2
+	vpaddd	%zmm19,%zmm3,%zmm3
+
+	vpunpckldq	%zmm1,%zmm0,%zmm18
+	vpunpckldq	%zmm3,%zmm2,%zmm19
+	vpunpckhdq	%zmm1,%zmm0,%zmm0
+	vpunpckhdq	%zmm3,%zmm2,%zmm2
+	vpunpcklqdq	%zmm19,%zmm18,%zmm1
+	vpunpckhqdq	%zmm19,%zmm18,%zmm18
+	vpunpcklqdq	%zmm2,%zmm0,%zmm3
+	vpunpckhqdq	%zmm2,%zmm0,%zmm0
+	vpaddd	%zmm20,%zmm4,%zmm4
+	vpaddd	%zmm21,%zmm5,%zmm5
+	vpaddd	%zmm22,%zmm6,%zmm6
+	vpaddd	%zmm23,%zmm7,%zmm7
+
+	vpunpckldq	%zmm5,%zmm4,%zmm2
+	vpunpckldq	%zmm7,%zmm6,%zmm19
+	vpunpckhdq	%zmm5,%zmm4,%zmm4
+	vpunpckhdq	%zmm7,%zmm6,%zmm6
+	vpunpcklqdq	%zmm19,%zmm2,%zmm5
+	vpunpckhqdq	%zmm19,%zmm2,%zmm2
+	vpunpcklqdq	%zmm6,%zmm4,%zmm7
+	vpunpckhqdq	%zmm6,%zmm4,%zmm4
+	vshufi32x4	$0x44,%zmm5,%zmm1,%zmm19
+	vshufi32x4	$0xee,%zmm5,%zmm1,%zmm5
+	vshufi32x4	$0x44,%zmm2,%zmm18,%zmm1
+	vshufi32x4	$0xee,%zmm2,%zmm18,%zmm2
+	vshufi32x4	$0x44,%zmm7,%zmm3,%zmm18
+	vshufi32x4	$0xee,%zmm7,%zmm3,%zmm7
+	vshufi32x4	$0x44,%zmm4,%zmm0,%zmm3
+	vshufi32x4	$0xee,%zmm4,%zmm0,%zmm4
+	vpaddd	%zmm24,%zmm8,%zmm8
+	vpaddd	%zmm25,%zmm9,%zmm9
+	vpaddd	%zmm26,%zmm10,%zmm10
+	vpaddd	%zmm27,%zmm11,%zmm11
+
+	vpunpckldq	%zmm9,%zmm8,%zmm6
+	vpunpckldq	%zmm11,%zmm10,%zmm0
+	vpunpckhdq	%zmm9,%zmm8,%zmm8
+	vpunpckhdq	%zmm11,%zmm10,%zmm10
+	vpunpcklqdq	%zmm0,%zmm6,%zmm9
+	vpunpckhqdq	%zmm0,%zmm6,%zmm6
+	vpunpcklqdq	%zmm10,%zmm8,%zmm11
+	vpunpckhqdq	%zmm10,%zmm8,%zmm8
+	vpaddd	%zmm28,%zmm12,%zmm12
+	vpaddd	%zmm29,%zmm13,%zmm13
+	vpaddd	%zmm30,%zmm14,%zmm14
+	vpaddd	%zmm31,%zmm15,%zmm15
+
+	vpunpckldq	%zmm13,%zmm12,%zmm10
+	vpunpckldq	%zmm15,%zmm14,%zmm0
+	vpunpckhdq	%zmm13,%zmm12,%zmm12
+	vpunpckhdq	%zmm15,%zmm14,%zmm14
+	vpunpcklqdq	%zmm0,%zmm10,%zmm13
+	vpunpckhqdq	%zmm0,%zmm10,%zmm10
+	vpunpcklqdq	%zmm14,%zmm12,%zmm15
+	vpunpckhqdq	%zmm14,%zmm12,%zmm12
+	vshufi32x4	$0x44,%zmm13,%zmm9,%zmm0
+	vshufi32x4	$0xee,%zmm13,%zmm9,%zmm13
+	vshufi32x4	$0x44,%zmm10,%zmm6,%zmm9
+	vshufi32x4	$0xee,%zmm10,%zmm6,%zmm10
+	vshufi32x4	$0x44,%zmm15,%zmm11,%zmm6
+	vshufi32x4	$0xee,%zmm15,%zmm11,%zmm15
+	vshufi32x4	$0x44,%zmm12,%zmm8,%zmm11
+	vshufi32x4	$0xee,%zmm12,%zmm8,%zmm12
+	vshufi32x4	$0x88,%zmm0,%zmm19,%zmm16
+	vshufi32x4	$0xdd,%zmm0,%zmm19,%zmm19
+	vshufi32x4	$0x88,%zmm13,%zmm5,%zmm0
+	vshufi32x4	$0xdd,%zmm13,%zmm5,%zmm13
+	vshufi32x4	$0x88,%zmm9,%zmm1,%zmm17
+	vshufi32x4	$0xdd,%zmm9,%zmm1,%zmm1
+	vshufi32x4	$0x88,%zmm10,%zmm2,%zmm9
+	vshufi32x4	$0xdd,%zmm10,%zmm2,%zmm10
+	vshufi32x4	$0x88,%zmm6,%zmm18,%zmm14
+	vshufi32x4	$0xdd,%zmm6,%zmm18,%zmm18
+	vshufi32x4	$0x88,%zmm15,%zmm7,%zmm6
+	vshufi32x4	$0xdd,%zmm15,%zmm7,%zmm15
+	vshufi32x4	$0x88,%zmm11,%zmm3,%zmm8
+	vshufi32x4	$0xdd,%zmm11,%zmm3,%zmm3
+	vshufi32x4	$0x88,%zmm12,%zmm4,%zmm11
+	vshufi32x4	$0xdd,%zmm12,%zmm4,%zmm12
+	cmpq	$1024,%rdx
+	jb	.Ltail16x
+
+	vpxord	0(%rsi),%zmm16,%zmm16
+	vpxord	64(%rsi),%zmm17,%zmm17
+	vpxord	128(%rsi),%zmm14,%zmm14
+	vpxord	192(%rsi),%zmm8,%zmm8
+	vmovdqu32	%zmm16,0(%rdi)
+	vmovdqu32	%zmm17,64(%rdi)
+	vmovdqu32	%zmm14,128(%rdi)
+	vmovdqu32	%zmm8,192(%rdi)
+
+	vpxord	256(%rsi),%zmm19,%zmm19
+	vpxord	320(%rsi),%zmm1,%zmm1
+	vpxord	384(%rsi),%zmm18,%zmm18
+	vpxord	448(%rsi),%zmm3,%zmm3
+	vmovdqu32	%zmm19,256(%rdi)
+	vmovdqu32	%zmm1,320(%rdi)
+	vmovdqu32	%zmm18,384(%rdi)
+	vmovdqu32	%zmm3,448(%rdi)
+
+	vpxord	512(%rsi),%zmm0,%zmm0
+	vpxord	576(%rsi),%zmm9,%zmm9
+	vpxord	640(%rsi),%zmm6,%zmm6
+	vpxord	704(%rsi),%zmm11,%zmm11
+	vmovdqu32	%zmm0,512(%rdi)
+	vmovdqu32	%zmm9,576(%rdi)
+	vmovdqu32	%zmm6,640(%rdi)
+	vmovdqu32	%zmm11,704(%rdi)
+
+	vpxord	768(%rsi),%zmm13,%zmm13
+	vpxord	832(%rsi),%zmm10,%zmm10
+	vpxord	896(%rsi),%zmm15,%zmm15
+	vpxord	960(%rsi),%zmm12,%zmm12
+	leaq	1024(%rsi),%rsi
+	vmovdqu32	%zmm13,768(%rdi)
+	vmovdqu32	%zmm10,832(%rdi)
+	vmovdqu32	%zmm15,896(%rdi)
+	vmovdqu32	%zmm12,960(%rdi)
+	leaq	1024(%rdi),%rdi
+
+	subq	$1024,%rdx
+	jnz	.Loop_outer16x
+
+	jmp	.Ldone16x
+
+.align	32
+.Ltail16x:
+	xorq	%r9,%r9
+	subq	%rsi,%rdi
+	cmpq	$64,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm16,%zmm16
+	vmovdqu32	%zmm16,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm17,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$128,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm17,%zmm17
+	vmovdqu32	%zmm17,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm14,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$192,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm14,%zmm14
+	vmovdqu32	%zmm14,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm8,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$256,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm8,%zmm8
+	vmovdqu32	%zmm8,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm19,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$320,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm19,%zmm19
+	vmovdqu32	%zmm19,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm1,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$384,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm1,%zmm1
+	vmovdqu32	%zmm1,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm18,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$448,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm18,%zmm18
+	vmovdqu32	%zmm18,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm3,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$512,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm3,%zmm3
+	vmovdqu32	%zmm3,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm0,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$576,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm0,%zmm0
+	vmovdqu32	%zmm0,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm9,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$640,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm9,%zmm9
+	vmovdqu32	%zmm9,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm6,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$704,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm6,%zmm6
+	vmovdqu32	%zmm6,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm11,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$768,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm11,%zmm11
+	vmovdqu32	%zmm11,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm13,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$832,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm13,%zmm13
+	vmovdqu32	%zmm13,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm10,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$896,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm10,%zmm10
+	vmovdqu32	%zmm10,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm15,%zmm16
+	leaq	64(%rsi),%rsi
+
+	cmpq	$960,%rdx
+	jb	.Less_than_64_16x
+	vpxord	(%rsi),%zmm15,%zmm15
+	vmovdqu32	%zmm15,(%rdi,%rsi,1)
+	je	.Ldone16x
+	vmovdqa32	%zmm12,%zmm16
+	leaq	64(%rsi),%rsi
+
+.Less_than_64_16x:
+	vmovdqa32	%zmm16,0(%rsp)
+	leaq	(%rdi,%rsi,1),%rdi
+	andq	$63,%rdx
+
+.Loop_tail16x:
+	movzbl	(%rsi,%r9,1),%eax
+	movzbl	(%rsp,%r9,1),%ecx
+	leaq	1(%r9),%r9
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r9,1)
+	decq	%rdx
+	jnz	.Loop_tail16x
+
+	vpxord	%zmm16,%zmm16,%zmm16
+	vmovdqa32	%zmm16,0(%rsp)
+
+.Ldone16x:
+	vzeroall
+	leaq	-8(%r10),%rsp
+
+.L16x_epilogue:
+	ret
+ENDPROC(chacha20_avx512)
+
+.align	32
+ENTRY(chacha20_avx512vl)
+	cmpq	$0,%rdx
+	je	.Lavx512vl_epilogue
+
+	leaq	8(%rsp),%r10
+
+	cmpq	$128,%rdx
+	ja	.Lchacha20_8xvl
+
+	subq	$64+8,%rsp
+	andq	$-64,%rsp
+	vbroadcasti128	.Lsigma(%rip),%ymm0
+	vbroadcasti128	(%rcx),%ymm1
+	vbroadcasti128	16(%rcx),%ymm2
+	vbroadcasti128	(%r8),%ymm3
+
+	vmovdqa32	%ymm0,%ymm16
+	vmovdqa32	%ymm1,%ymm17
+	vmovdqa32	%ymm2,%ymm18
+	vpaddd	.Lzeroz(%rip),%ymm3,%ymm3
+	vmovdqa32	.Ltwoy(%rip),%ymm20
+	movq	$10,%r8
+	vmovdqa32	%ymm3,%ymm19
+	jmp	.Loop_avx512vl
+
+.align	16
+.Loop_outer_avx512vl:
+	vmovdqa32	%ymm18,%ymm2
+	vpaddd	%ymm20,%ymm19,%ymm3
+	movq	$10,%r8
+	vmovdqa32	%ymm3,%ymm19
+	jmp	.Loop_avx512vl
+
+.align	32
+.Loop_avx512vl:
+	vpaddd	%ymm1,%ymm0,%ymm0
+	vpxor	%ymm0,%ymm3,%ymm3
+	vprold	$16,%ymm3,%ymm3
+	vpaddd	%ymm3,%ymm2,%ymm2
+	vpxor	%ymm2,%ymm1,%ymm1
+	vprold	$12,%ymm1,%ymm1
+	vpaddd	%ymm1,%ymm0,%ymm0
+	vpxor	%ymm0,%ymm3,%ymm3
+	vprold	$8,%ymm3,%ymm3
+	vpaddd	%ymm3,%ymm2,%ymm2
+	vpxor	%ymm2,%ymm1,%ymm1
+	vprold	$7,%ymm1,%ymm1
+	vpshufd	$78,%ymm2,%ymm2
+	vpshufd	$57,%ymm1,%ymm1
+	vpshufd	$147,%ymm3,%ymm3
+	vpaddd	%ymm1,%ymm0,%ymm0
+	vpxor	%ymm0,%ymm3,%ymm3
+	vprold	$16,%ymm3,%ymm3
+	vpaddd	%ymm3,%ymm2,%ymm2
+	vpxor	%ymm2,%ymm1,%ymm1
+	vprold	$12,%ymm1,%ymm1
+	vpaddd	%ymm1,%ymm0,%ymm0
+	vpxor	%ymm0,%ymm3,%ymm3
+	vprold	$8,%ymm3,%ymm3
+	vpaddd	%ymm3,%ymm2,%ymm2
+	vpxor	%ymm2,%ymm1,%ymm1
+	vprold	$7,%ymm1,%ymm1
+	vpshufd	$78,%ymm2,%ymm2
+	vpshufd	$147,%ymm1,%ymm1
+	vpshufd	$57,%ymm3,%ymm3
+	decq	%r8
+	jnz	.Loop_avx512vl
+	vpaddd	%ymm16,%ymm0,%ymm0
+	vpaddd	%ymm17,%ymm1,%ymm1
+	vpaddd	%ymm18,%ymm2,%ymm2
+	vpaddd	%ymm19,%ymm3,%ymm3
+
+	subq	$64,%rdx
+	jb	.Ltail64_avx512vl
+
+	vpxor	0(%rsi),%xmm0,%xmm4
+	vpxor	16(%rsi),%xmm1,%xmm5
+	vpxor	32(%rsi),%xmm2,%xmm6
+	vpxor	48(%rsi),%xmm3,%xmm7
+	leaq	64(%rsi),%rsi
+
+	vmovdqu	%xmm4,0(%rdi)
+	vmovdqu	%xmm5,16(%rdi)
+	vmovdqu	%xmm6,32(%rdi)
+	vmovdqu	%xmm7,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	jz	.Ldone_avx512vl
+
+	vextracti128	$1,%ymm0,%xmm4
+	vextracti128	$1,%ymm1,%xmm5
+	vextracti128	$1,%ymm2,%xmm6
+	vextracti128	$1,%ymm3,%xmm7
+
+	subq	$64,%rdx
+	jb	.Ltail_avx512vl
+
+	vpxor	0(%rsi),%xmm4,%xmm4
+	vpxor	16(%rsi),%xmm5,%xmm5
+	vpxor	32(%rsi),%xmm6,%xmm6
+	vpxor	48(%rsi),%xmm7,%xmm7
+	leaq	64(%rsi),%rsi
+
+	vmovdqu	%xmm4,0(%rdi)
+	vmovdqu	%xmm5,16(%rdi)
+	vmovdqu	%xmm6,32(%rdi)
+	vmovdqu	%xmm7,48(%rdi)
+	leaq	64(%rdi),%rdi
+
+	vmovdqa32	%ymm16,%ymm0
+	vmovdqa32	%ymm17,%ymm1
+	jnz	.Loop_outer_avx512vl
+
+	jmp	.Ldone_avx512vl
+
+.align	16
+.Ltail64_avx512vl:
+	vmovdqa	%xmm0,0(%rsp)
+	vmovdqa	%xmm1,16(%rsp)
+	vmovdqa	%xmm2,32(%rsp)
+	vmovdqa	%xmm3,48(%rsp)
+	addq	$64,%rdx
+	jmp	.Loop_tail_avx512vl
+
+.align	16
+.Ltail_avx512vl:
+	vmovdqa	%xmm4,0(%rsp)
+	vmovdqa	%xmm5,16(%rsp)
+	vmovdqa	%xmm6,32(%rsp)
+	vmovdqa	%xmm7,48(%rsp)
+	addq	$64,%rdx
+
+.Loop_tail_avx512vl:
+	movzbl	(%rsi,%r8,1),%eax
+	movzbl	(%rsp,%r8,1),%ecx
+	leaq	1(%r8),%r8
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r8,1)
+	decq	%rdx
+	jnz	.Loop_tail_avx512vl
+
+	vmovdqa32	%ymm16,0(%rsp)
+	vmovdqa32	%ymm16,32(%rsp)
+
+.Ldone_avx512vl:
+	vzeroall
+	leaq	-8(%r10),%rsp
+.Lavx512vl_epilogue:
+	ret
+
+.align	32
+.Lchacha20_8xvl:
+	leaq	8(%rsp),%r10
+	subq	$64+8,%rsp
+	andq	$-64,%rsp
+	vzeroupper
+
+	leaq	.Lsigma(%rip),%r9
+	vbroadcasti128	(%r9),%ymm3
+	vbroadcasti128	(%rcx),%ymm7
+	vbroadcasti128	16(%rcx),%ymm11
+	vbroadcasti128	(%r8),%ymm15
+
+	vpshufd	$0x00,%ymm3,%ymm0
+	vpshufd	$0x55,%ymm3,%ymm1
+	vpshufd	$0xaa,%ymm3,%ymm2
+	vpshufd	$0xff,%ymm3,%ymm3
+	vmovdqa64	%ymm0,%ymm16
+	vmovdqa64	%ymm1,%ymm17
+	vmovdqa64	%ymm2,%ymm18
+	vmovdqa64	%ymm3,%ymm19
+
+	vpshufd	$0x00,%ymm7,%ymm4
+	vpshufd	$0x55,%ymm7,%ymm5
+	vpshufd	$0xaa,%ymm7,%ymm6
+	vpshufd	$0xff,%ymm7,%ymm7
+	vmovdqa64	%ymm4,%ymm20
+	vmovdqa64	%ymm5,%ymm21
+	vmovdqa64	%ymm6,%ymm22
+	vmovdqa64	%ymm7,%ymm23
+
+	vpshufd	$0x00,%ymm11,%ymm8
+	vpshufd	$0x55,%ymm11,%ymm9
+	vpshufd	$0xaa,%ymm11,%ymm10
+	vpshufd	$0xff,%ymm11,%ymm11
+	vmovdqa64	%ymm8,%ymm24
+	vmovdqa64	%ymm9,%ymm25
+	vmovdqa64	%ymm10,%ymm26
+	vmovdqa64	%ymm11,%ymm27
+
+	vpshufd	$0x00,%ymm15,%ymm12
+	vpshufd	$0x55,%ymm15,%ymm13
+	vpshufd	$0xaa,%ymm15,%ymm14
+	vpshufd	$0xff,%ymm15,%ymm15
+	vpaddd	.Lincy(%rip),%ymm12,%ymm12
+	vmovdqa64	%ymm12,%ymm28
+	vmovdqa64	%ymm13,%ymm29
+	vmovdqa64	%ymm14,%ymm30
+	vmovdqa64	%ymm15,%ymm31
+
+	movl	$10,%eax
+	jmp	.Loop8xvl
+
+.align	32
+.Loop_outer8xvl:
+
+
+	vpbroadcastd	8(%r9),%ymm2
+	vpbroadcastd	12(%r9),%ymm3
+	vpaddd	.Leight(%rip),%ymm28,%ymm28
+	vmovdqa64	%ymm20,%ymm4
+	vmovdqa64	%ymm21,%ymm5
+	vmovdqa64	%ymm22,%ymm6
+	vmovdqa64	%ymm23,%ymm7
+	vmovdqa64	%ymm24,%ymm8
+	vmovdqa64	%ymm25,%ymm9
+	vmovdqa64	%ymm26,%ymm10
+	vmovdqa64	%ymm27,%ymm11
+	vmovdqa64	%ymm28,%ymm12
+	vmovdqa64	%ymm29,%ymm13
+	vmovdqa64	%ymm30,%ymm14
+	vmovdqa64	%ymm31,%ymm15
+
+	vmovdqa64	%ymm0,%ymm16
+	vmovdqa64	%ymm1,%ymm17
+	vmovdqa64	%ymm2,%ymm18
+	vmovdqa64	%ymm3,%ymm19
+
+	movl	$10,%eax
+	jmp	.Loop8xvl
+
+.align	32
+.Loop8xvl:
+	vpaddd	%ymm4,%ymm0,%ymm0
+	vpaddd	%ymm5,%ymm1,%ymm1
+	vpaddd	%ymm6,%ymm2,%ymm2
+	vpaddd	%ymm7,%ymm3,%ymm3
+	vpxor	%ymm0,%ymm12,%ymm12
+	vpxor	%ymm1,%ymm13,%ymm13
+	vpxor	%ymm2,%ymm14,%ymm14
+	vpxor	%ymm3,%ymm15,%ymm15
+	vprold	$16,%ymm12,%ymm12
+	vprold	$16,%ymm13,%ymm13
+	vprold	$16,%ymm14,%ymm14
+	vprold	$16,%ymm15,%ymm15
+	vpaddd	%ymm12,%ymm8,%ymm8
+	vpaddd	%ymm13,%ymm9,%ymm9
+	vpaddd	%ymm14,%ymm10,%ymm10
+	vpaddd	%ymm15,%ymm11,%ymm11
+	vpxor	%ymm8,%ymm4,%ymm4
+	vpxor	%ymm9,%ymm5,%ymm5
+	vpxor	%ymm10,%ymm6,%ymm6
+	vpxor	%ymm11,%ymm7,%ymm7
+	vprold	$12,%ymm4,%ymm4
+	vprold	$12,%ymm5,%ymm5
+	vprold	$12,%ymm6,%ymm6
+	vprold	$12,%ymm7,%ymm7
+	vpaddd	%ymm4,%ymm0,%ymm0
+	vpaddd	%ymm5,%ymm1,%ymm1
+	vpaddd	%ymm6,%ymm2,%ymm2
+	vpaddd	%ymm7,%ymm3,%ymm3
+	vpxor	%ymm0,%ymm12,%ymm12
+	vpxor	%ymm1,%ymm13,%ymm13
+	vpxor	%ymm2,%ymm14,%ymm14
+	vpxor	%ymm3,%ymm15,%ymm15
+	vprold	$8,%ymm12,%ymm12
+	vprold	$8,%ymm13,%ymm13
+	vprold	$8,%ymm14,%ymm14
+	vprold	$8,%ymm15,%ymm15
+	vpaddd	%ymm12,%ymm8,%ymm8
+	vpaddd	%ymm13,%ymm9,%ymm9
+	vpaddd	%ymm14,%ymm10,%ymm10
+	vpaddd	%ymm15,%ymm11,%ymm11
+	vpxor	%ymm8,%ymm4,%ymm4
+	vpxor	%ymm9,%ymm5,%ymm5
+	vpxor	%ymm10,%ymm6,%ymm6
+	vpxor	%ymm11,%ymm7,%ymm7
+	vprold	$7,%ymm4,%ymm4
+	vprold	$7,%ymm5,%ymm5
+	vprold	$7,%ymm6,%ymm6
+	vprold	$7,%ymm7,%ymm7
+	vpaddd	%ymm5,%ymm0,%ymm0
+	vpaddd	%ymm6,%ymm1,%ymm1
+	vpaddd	%ymm7,%ymm2,%ymm2
+	vpaddd	%ymm4,%ymm3,%ymm3
+	vpxor	%ymm0,%ymm15,%ymm15
+	vpxor	%ymm1,%ymm12,%ymm12
+	vpxor	%ymm2,%ymm13,%ymm13
+	vpxor	%ymm3,%ymm14,%ymm14
+	vprold	$16,%ymm15,%ymm15
+	vprold	$16,%ymm12,%ymm12
+	vprold	$16,%ymm13,%ymm13
+	vprold	$16,%ymm14,%ymm14
+	vpaddd	%ymm15,%ymm10,%ymm10
+	vpaddd	%ymm12,%ymm11,%ymm11
+	vpaddd	%ymm13,%ymm8,%ymm8
+	vpaddd	%ymm14,%ymm9,%ymm9
+	vpxor	%ymm10,%ymm5,%ymm5
+	vpxor	%ymm11,%ymm6,%ymm6
+	vpxor	%ymm8,%ymm7,%ymm7
+	vpxor	%ymm9,%ymm4,%ymm4
+	vprold	$12,%ymm5,%ymm5
+	vprold	$12,%ymm6,%ymm6
+	vprold	$12,%ymm7,%ymm7
+	vprold	$12,%ymm4,%ymm4
+	vpaddd	%ymm5,%ymm0,%ymm0
+	vpaddd	%ymm6,%ymm1,%ymm1
+	vpaddd	%ymm7,%ymm2,%ymm2
+	vpaddd	%ymm4,%ymm3,%ymm3
+	vpxor	%ymm0,%ymm15,%ymm15
+	vpxor	%ymm1,%ymm12,%ymm12
+	vpxor	%ymm2,%ymm13,%ymm13
+	vpxor	%ymm3,%ymm14,%ymm14
+	vprold	$8,%ymm15,%ymm15
+	vprold	$8,%ymm12,%ymm12
+	vprold	$8,%ymm13,%ymm13
+	vprold	$8,%ymm14,%ymm14
+	vpaddd	%ymm15,%ymm10,%ymm10
+	vpaddd	%ymm12,%ymm11,%ymm11
+	vpaddd	%ymm13,%ymm8,%ymm8
+	vpaddd	%ymm14,%ymm9,%ymm9
+	vpxor	%ymm10,%ymm5,%ymm5
+	vpxor	%ymm11,%ymm6,%ymm6
+	vpxor	%ymm8,%ymm7,%ymm7
+	vpxor	%ymm9,%ymm4,%ymm4
+	vprold	$7,%ymm5,%ymm5
+	vprold	$7,%ymm6,%ymm6
+	vprold	$7,%ymm7,%ymm7
+	vprold	$7,%ymm4,%ymm4
+	decl	%eax
+	jnz	.Loop8xvl
+
+	vpaddd	%ymm16,%ymm0,%ymm0
+	vpaddd	%ymm17,%ymm1,%ymm1
+	vpaddd	%ymm18,%ymm2,%ymm2
+	vpaddd	%ymm19,%ymm3,%ymm3
+
+	vpunpckldq	%ymm1,%ymm0,%ymm18
+	vpunpckldq	%ymm3,%ymm2,%ymm19
+	vpunpckhdq	%ymm1,%ymm0,%ymm0
+	vpunpckhdq	%ymm3,%ymm2,%ymm2
+	vpunpcklqdq	%ymm19,%ymm18,%ymm1
+	vpunpckhqdq	%ymm19,%ymm18,%ymm18
+	vpunpcklqdq	%ymm2,%ymm0,%ymm3
+	vpunpckhqdq	%ymm2,%ymm0,%ymm0
+	vpaddd	%ymm20,%ymm4,%ymm4
+	vpaddd	%ymm21,%ymm5,%ymm5
+	vpaddd	%ymm22,%ymm6,%ymm6
+	vpaddd	%ymm23,%ymm7,%ymm7
+
+	vpunpckldq	%ymm5,%ymm4,%ymm2
+	vpunpckldq	%ymm7,%ymm6,%ymm19
+	vpunpckhdq	%ymm5,%ymm4,%ymm4
+	vpunpckhdq	%ymm7,%ymm6,%ymm6
+	vpunpcklqdq	%ymm19,%ymm2,%ymm5
+	vpunpckhqdq	%ymm19,%ymm2,%ymm2
+	vpunpcklqdq	%ymm6,%ymm4,%ymm7
+	vpunpckhqdq	%ymm6,%ymm4,%ymm4
+	vshufi32x4	$0,%ymm5,%ymm1,%ymm19
+	vshufi32x4	$3,%ymm5,%ymm1,%ymm5
+	vshufi32x4	$0,%ymm2,%ymm18,%ymm1
+	vshufi32x4	$3,%ymm2,%ymm18,%ymm2
+	vshufi32x4	$0,%ymm7,%ymm3,%ymm18
+	vshufi32x4	$3,%ymm7,%ymm3,%ymm7
+	vshufi32x4	$0,%ymm4,%ymm0,%ymm3
+	vshufi32x4	$3,%ymm4,%ymm0,%ymm4
+	vpaddd	%ymm24,%ymm8,%ymm8
+	vpaddd	%ymm25,%ymm9,%ymm9
+	vpaddd	%ymm26,%ymm10,%ymm10
+	vpaddd	%ymm27,%ymm11,%ymm11
+
+	vpunpckldq	%ymm9,%ymm8,%ymm6
+	vpunpckldq	%ymm11,%ymm10,%ymm0
+	vpunpckhdq	%ymm9,%ymm8,%ymm8
+	vpunpckhdq	%ymm11,%ymm10,%ymm10
+	vpunpcklqdq	%ymm0,%ymm6,%ymm9
+	vpunpckhqdq	%ymm0,%ymm6,%ymm6
+	vpunpcklqdq	%ymm10,%ymm8,%ymm11
+	vpunpckhqdq	%ymm10,%ymm8,%ymm8
+	vpaddd	%ymm28,%ymm12,%ymm12
+	vpaddd	%ymm29,%ymm13,%ymm13
+	vpaddd	%ymm30,%ymm14,%ymm14
+	vpaddd	%ymm31,%ymm15,%ymm15
+
+	vpunpckldq	%ymm13,%ymm12,%ymm10
+	vpunpckldq	%ymm15,%ymm14,%ymm0
+	vpunpckhdq	%ymm13,%ymm12,%ymm12
+	vpunpckhdq	%ymm15,%ymm14,%ymm14
+	vpunpcklqdq	%ymm0,%ymm10,%ymm13
+	vpunpckhqdq	%ymm0,%ymm10,%ymm10
+	vpunpcklqdq	%ymm14,%ymm12,%ymm15
+	vpunpckhqdq	%ymm14,%ymm12,%ymm12
+	vperm2i128	$0x20,%ymm13,%ymm9,%ymm0
+	vperm2i128	$0x31,%ymm13,%ymm9,%ymm13
+	vperm2i128	$0x20,%ymm10,%ymm6,%ymm9
+	vperm2i128	$0x31,%ymm10,%ymm6,%ymm10
+	vperm2i128	$0x20,%ymm15,%ymm11,%ymm6
+	vperm2i128	$0x31,%ymm15,%ymm11,%ymm15
+	vperm2i128	$0x20,%ymm12,%ymm8,%ymm11
+	vperm2i128	$0x31,%ymm12,%ymm8,%ymm12
+	cmpq	$512,%rdx
+	jb	.Ltail8xvl
+
+	movl	$0x80,%eax
+	vpxord	0(%rsi),%ymm19,%ymm19
+	vpxor	32(%rsi),%ymm0,%ymm0
+	vpxor	64(%rsi),%ymm5,%ymm5
+	vpxor	96(%rsi),%ymm13,%ymm13
+	leaq	(%rsi,%rax,1),%rsi
+	vmovdqu32	%ymm19,0(%rdi)
+	vmovdqu	%ymm0,32(%rdi)
+	vmovdqu	%ymm5,64(%rdi)
+	vmovdqu	%ymm13,96(%rdi)
+	leaq	(%rdi,%rax,1),%rdi
+
+	vpxor	0(%rsi),%ymm1,%ymm1
+	vpxor	32(%rsi),%ymm9,%ymm9
+	vpxor	64(%rsi),%ymm2,%ymm2
+	vpxor	96(%rsi),%ymm10,%ymm10
+	leaq	(%rsi,%rax,1),%rsi
+	vmovdqu	%ymm1,0(%rdi)
+	vmovdqu	%ymm9,32(%rdi)
+	vmovdqu	%ymm2,64(%rdi)
+	vmovdqu	%ymm10,96(%rdi)
+	leaq	(%rdi,%rax,1),%rdi
+
+	vpxord	0(%rsi),%ymm18,%ymm18
+	vpxor	32(%rsi),%ymm6,%ymm6
+	vpxor	64(%rsi),%ymm7,%ymm7
+	vpxor	96(%rsi),%ymm15,%ymm15
+	leaq	(%rsi,%rax,1),%rsi
+	vmovdqu32	%ymm18,0(%rdi)
+	vmovdqu	%ymm6,32(%rdi)
+	vmovdqu	%ymm7,64(%rdi)
+	vmovdqu	%ymm15,96(%rdi)
+	leaq	(%rdi,%rax,1),%rdi
+
+	vpxor	0(%rsi),%ymm3,%ymm3
+	vpxor	32(%rsi),%ymm11,%ymm11
+	vpxor	64(%rsi),%ymm4,%ymm4
+	vpxor	96(%rsi),%ymm12,%ymm12
+	leaq	(%rsi,%rax,1),%rsi
+	vmovdqu	%ymm3,0(%rdi)
+	vmovdqu	%ymm11,32(%rdi)
+	vmovdqu	%ymm4,64(%rdi)
+	vmovdqu	%ymm12,96(%rdi)
+	leaq	(%rdi,%rax,1),%rdi
+
+	vpbroadcastd	0(%r9),%ymm0
+	vpbroadcastd	4(%r9),%ymm1
+
+	subq	$512,%rdx
+	jnz	.Loop_outer8xvl
+
+	jmp	.Ldone8xvl
+
+.align	32
+.Ltail8xvl:
+	vmovdqa64	%ymm19,%ymm8
+	xorq	%r9,%r9
+	subq	%rsi,%rdi
+	cmpq	$64,%rdx
+	jb	.Less_than_64_8xvl
+	vpxor	0(%rsi),%ymm8,%ymm8
+	vpxor	32(%rsi),%ymm0,%ymm0
+	vmovdqu	%ymm8,0(%rdi,%rsi,1)
+	vmovdqu	%ymm0,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa	%ymm5,%ymm8
+	vmovdqa	%ymm13,%ymm0
+	leaq	64(%rsi),%rsi
+
+	cmpq	$128,%rdx
+	jb	.Less_than_64_8xvl
+	vpxor	0(%rsi),%ymm5,%ymm5
+	vpxor	32(%rsi),%ymm13,%ymm13
+	vmovdqu	%ymm5,0(%rdi,%rsi,1)
+	vmovdqu	%ymm13,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa	%ymm1,%ymm8
+	vmovdqa	%ymm9,%ymm0
+	leaq	64(%rsi),%rsi
+
+	cmpq	$192,%rdx
+	jb	.Less_than_64_8xvl
+	vpxor	0(%rsi),%ymm1,%ymm1
+	vpxor	32(%rsi),%ymm9,%ymm9
+	vmovdqu	%ymm1,0(%rdi,%rsi,1)
+	vmovdqu	%ymm9,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa	%ymm2,%ymm8
+	vmovdqa	%ymm10,%ymm0
+	leaq	64(%rsi),%rsi
+
+	cmpq	$256,%rdx
+	jb	.Less_than_64_8xvl
+	vpxor	0(%rsi),%ymm2,%ymm2
+	vpxor	32(%rsi),%ymm10,%ymm10
+	vmovdqu	%ymm2,0(%rdi,%rsi,1)
+	vmovdqu	%ymm10,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa32	%ymm18,%ymm8
+	vmovdqa	%ymm6,%ymm0
+	leaq	64(%rsi),%rsi
+
+	cmpq	$320,%rdx
+	jb	.Less_than_64_8xvl
+	vpxord	0(%rsi),%ymm18,%ymm18
+	vpxor	32(%rsi),%ymm6,%ymm6
+	vmovdqu32	%ymm18,0(%rdi,%rsi,1)
+	vmovdqu	%ymm6,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa	%ymm7,%ymm8
+	vmovdqa	%ymm15,%ymm0
+	leaq	64(%rsi),%rsi
+
+	cmpq	$384,%rdx
+	jb	.Less_than_64_8xvl
+	vpxor	0(%rsi),%ymm7,%ymm7
+	vpxor	32(%rsi),%ymm15,%ymm15
+	vmovdqu	%ymm7,0(%rdi,%rsi,1)
+	vmovdqu	%ymm15,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa	%ymm3,%ymm8
+	vmovdqa	%ymm11,%ymm0
+	leaq	64(%rsi),%rsi
+
+	cmpq	$448,%rdx
+	jb	.Less_than_64_8xvl
+	vpxor	0(%rsi),%ymm3,%ymm3
+	vpxor	32(%rsi),%ymm11,%ymm11
+	vmovdqu	%ymm3,0(%rdi,%rsi,1)
+	vmovdqu	%ymm11,32(%rdi,%rsi,1)
+	je	.Ldone8xvl
+	vmovdqa	%ymm4,%ymm8
+	vmovdqa	%ymm12,%ymm0
+	leaq	64(%rsi),%rsi
+
+.Less_than_64_8xvl:
+	vmovdqa	%ymm8,0(%rsp)
+	vmovdqa	%ymm0,32(%rsp)
+	leaq	(%rdi,%rsi,1),%rdi
+	andq	$63,%rdx
+
+.Loop_tail8xvl:
+	movzbl	(%rsi,%r9,1),%eax
+	movzbl	(%rsp,%r9,1),%ecx
+	leaq	1(%r9),%r9
+	xorl	%ecx,%eax
+	movb	%al,-1(%rdi,%r9,1)
+	decq	%rdx
+	jnz	.Loop_tail8xvl
+
+	vpxor	%ymm8,%ymm8,%ymm8
+	vmovdqa	%ymm8,0(%rsp)
+	vmovdqa	%ymm8,32(%rsp)
+
+.Ldone8xvl:
+	vzeroall
+	leaq	-8(%r10),%rsp
+.L8xvl_epilogue:
+	ret
+ENDPROC(chacha20_avx512vl)
+
+#endif /* CONFIG_AS_AVX512 */
diff --git a/lib/zinc/chacha20/chacha20.c b/lib/zinc/chacha20/chacha20.c
index c82d9fc71f21..4354b874a6a5 100644
--- a/lib/zinc/chacha20/chacha20.c
+++ b/lib/zinc/chacha20/chacha20.c
@@ -14,7 +14,9 @@ 
 #include <linux/init.h>
 #include <crypto/algapi.h>
 
-#ifndef HAVE_CHACHA20_ARCH_IMPLEMENTATION
+#if defined(CONFIG_ZINC_ARCH_X86_64)
+#include "chacha20-x86_64-glue.h"
+#else
 void __init chacha20_fpu_init(void)
 {
 }