// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego

// Package alias implements memory aliasing tests.
package alias

import "unsafe"

// AnyOverlap reports whether x and y share memory at any (not necessarily
// corresponding) index. The memory beyond the slice length is ignored.
func AnyOverlap(x, y []byte) bool {

// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego && (amd64 || arm64 || ppc64le || s390x)

package nistec

import (
	"fmt"
	"testing"
)

func TestP256PrecomputedTable(t *testing.T) {
	base := NewP256Point().SetGenerator()

	for i := 0; i < 43; i++ {
		t.Run(fmt.Sprintf("table[%d]", i), func(t *testing.T) {

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego

package maphash

import (
	"unsafe"
)

//go:linkname runtime_rand runtime.rand
func runtime_rand() uint64

//go:linkname runtime_memhash runtime.memhash
//go:noescape
func runtime_memhash(p unsafe.Pointer, seed, s uintptr) uintptr

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build purego

// Package alias implements memory aliasing tests.
package alias

// This is the Google App Engine standard variant based on reflect
// because the unsafe package and cgo are disallowed.

import "reflect"

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego

package sha1

import "internal/cpu"

//go:noescape
func blockAVX2(dig *digest, p []byte)

//go:noescape
func blockAMD64(dig *digest, p []byte)

var useAVX2 = cpu.X86.HasAVX2 && cpu.X86.HasBMI1 && cpu.X86.HasBMI2

func block(dig *digest, p []byte) {

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego && (386 || amd64 || arm || arm64 || ppc64 || ppc64le || riscv64 || s390x)

package bigmod

import "internal/cpu"

// amd64 assembly uses ADCX/ADOX/MULX if ADX is available to run two carry
// chains in the flags in parallel across the whole operation, and aggressively

// Copyright (c) 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego

#include "textflag.h"

// carryPropagate works exactly like carryPropagateGeneric and uses the
// same AND, ADD, and LSR+MADD instructions emitted by the compiler, but
// avoids loading R0-R4 twice and uses LDP and STP.
//

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !purego

#include "textflag.h"

// func xorBytes(dst, a, b *byte, n int)
TEXT ·xorBytes(SB), NOSPLIT, $0
	MOVQ  dst+0(FP), BX
	MOVQ  a+8(FP), SI
	MOVQ  b+16(FP), CX
	MOVQ  n+24(FP), DX
	TESTQ $15, DX            // AND 15 & len, if not zero jump to not_aligned.

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build gc && !purego

package poly1305

//go:noescape
func update(state *macState, msg []byte)

// mac is a wrapper for macGeneric that redirects calls that would have gone to
// updateGeneric to update.
//

// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build gc && !purego

#include "textflag.h"

#define POLY1305_ADD(msg, h0, h1, h2) \
	ADDQ 0(msg), h0;  \
	ADCQ 8(msg), h1;  \
	ADCQ $1, h2;      \
	LEAQ 16(msg), msg

#define POLY1305_MUL(h0, h1, h2, r0, r1, t0, t1, t2, t3) \
	MOVQ  r0, AX;                  \