[PATCH net-next v4 05/20] zinc: ChaCha20 x86_64 implementation

["Jason A. Donenfeld" <Jason@xxxxxxxxx>]

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.

Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
Signed-off-by: Samuel Neves <sneves@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Jean-Philippe Aumasson <jeanphilippe.aumasson@xxxxxxxxx>
Cc: Andy Polyakov <appro@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: x86@xxxxxxxxxx
---
 lib/zinc/Makefile                        |    4 +
 lib/zinc/chacha20/chacha20-x86_64-glue.h |  102 +
 lib/zinc/chacha20/chacha20-x86_64.S      | 2632 ++++++++++++++++++++++
 3 files changed, 2738 insertions(+)
 create mode 100644 lib/zinc/chacha20/chacha20-x86_64-glue.h
 create mode 100644 lib/zinc/chacha20/chacha20-x86_64.S

diff --git a/lib/zinc/Makefile b/lib/zinc/Makefile
index 8d14cb13349a..32e4bd94ea0b 100644
--- a/lib/zinc/Makefile
+++ b/lib/zinc/Makefile
@@ -5,6 +5,10 @@ ccflags-$(CONFIG_ZINC_DEBUG) += -DDEBUG
 
 ifeq ($(CONFIG_ZINC_CHACHA20),y)
 zinc-y += chacha20/chacha20.o
+ifeq ($(CONFIG_ZINC_ARCH_X86_64),y)
+zinc-y += chacha20/chacha20-x86_64.o
+CFLAGS_chacha20.o += -include $(srctree)/$(src)/chacha20/chacha20-x86_64-glue.h
+endif
 ifeq ($(CONFIG_ZINC_ARCH_ARM),y)
 zinc-y += chacha20/chacha20-arm.o
 CFLAGS_chacha20.o += -include $(srctree)/$(src)/chacha20/chacha20-arm-glue.h
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..e4f6c3162d3f
--- /dev/null
+++ b/lib/zinc/chacha20/chacha20-x86_64-glue.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@xxxxxxxxx>. All Rights Reserved.
+ */
+
+#include <zinc/chacha20.h>
+#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(u8 *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;
+
+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(u8 *dst, const u8 *src, const size_t len,
+				 const u32 key[8], const u32 counter[4],
+				 simd_context_t simd_context)
+{
+	if (simd_context != HAVE_FULL_SIMD)
+		return false;
+
+#ifdef CONFIG_AS_AVX512
+	if (chacha20_use_avx512) {
+		chacha20_avx512(dst, src, len, key, counter);
+		return true;
+	}
+	if (chacha20_use_avx512vl) {
+		chacha20_avx512vl(dst, src, len, key, counter);
+		return true;
+	}
+#endif
+#ifdef CONFIG_AS_AVX2
+	if (chacha20_use_avx2) {
+		chacha20_avx2(dst, src, len, key, counter);
+		return true;
+	}
+#endif
+#ifdef CONFIG_AS_SSSE3
+	if (chacha20_use_ssse3) {
+		chacha20_ssse3(dst, src, len, key, counter);
+		return true;
+	}
+#endif
+	return false;
+}
+
+static inline bool hchacha20_arch(u8 *derived_key, const u8 *nonce,
+				  const u8 *key, simd_context_t simd_context)
+{
+#if defined(CONFIG_AS_SSSE3)
+	if (simd_context == HAVE_FULL_SIMD && chacha20_use_ssse3) {
+		hchacha20_ssse3(derived_key, nonce, key);
+		return true;
+	}
+#endif
+	return false;
+}
+
+#define HAVE_CHACHA20_ARCH_IMPLEMENTATION
diff --git a/lib/zinc/chacha20/chacha20-x86_64.S b/lib/zinc/chacha20/chacha20-x86_64.S
new file mode 100644
index 000000000000..3f503a319692
--- /dev/null
+++ b/lib/zinc/chacha20/chacha20-x86_64.S
@@ -0,0 +1,2632 @@
+/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+ *
+ * Copyright (C) 2017 Samuel Neves <sneves@xxxxxxxxx>. All Rights Reserved.
+ * Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@xxxxxxxxx>. All Rights Reserved.
+ * Copyright (C) 2006-2017 CRYPTOGAMS by <appro@xxxxxxxxxxx>. 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 */
-- 
2.19.0