func init() {
	MaxLen = 32
}

// Cutover reports the number of failures of IndexByte we should tolerate
// before switching over to Index.
// n is the number of bytes processed so far.
// See the bytes.Index implementation for details.
func Cutover(n int) int {
	// 1 error per 8 characters, plus a few slop to start.
	return (n + 16) / 8

}

// atomic_storePointer is the implementation of runtime/internal/UnsafePointer.Store
// (like StoreNoWB but with the write barrier).
//
//go:nosplit
//go:linkname atomic_storePointer internal/runtime/atomic.storePointer
func atomic_storePointer(ptr *unsafe.Pointer, new unsafe.Pointer) {
	atomicstorep(unsafe.Pointer(ptr), new)
}

// atomic_casPointer is the implementation of runtime/internal/UnsafePointer.CompareAndSwap

// B instruction branches to callbackasm1.
// callbackasm1 takes the callback index from R12 and
// indexes into an array that stores information about each callback.
// It then calls the Go implementation for that callback.
#include "textflag.h"

TEXT runtime·callbackasm(SB),NOSPLIT|NOFRAME,$0
`)
	for i := 0; i < maxCallback; i++ {
		fmt.Fprintf(&buf, "\tMOVW\t$%d, R12\n", i)

func wrap(b cipher.Block) cipher.Block {
	return &wrapper{b}
}

func TestGCMAsm(t *testing.T) {
	// Create a new pair of AEADs, one using the assembly implementation
	// and one using the generic Go implementation.
	newAESGCM := func(key []byte) (asm, generic cipher.AEAD, err error) {
		block, err := aes.NewCipher(key[:])
		if err != nil {
			return nil, nil, err
		}

// ErrPersistEOF (above) reports that the remote side is closed.
var errClosed = errors.New("i/o operation on closed connection")

// ServerConn is an artifact of Go's early HTTP implementation.
// It is low-level, old, and unused by Go's current HTTP stack.
// We should have deleted it before Go 1.
//
// Deprecated: Use the Server in package [net/http] instead.
type ServerConn struct {

package sha1

import (
	"fmt"
	"io"
	"testing"
)

// Tests the fallback code path in case the optimized asm
// implementation cannot be used.
// See also TestBlockGeneric.
func TestGenericPath(t *testing.T) {
	if !useAsm {
		t.Skipf("assembly implementation unavailable")
	}
	useAsm = false
	defer func() { useAsm = true }()
	c := New()
	in := "ΑΒΓΔΕϜΖΗΘΙΚΛΜΝΞΟΠϺϘΡΣΤΥΦΧΨΩ"

package sha512

import (
	"fmt"
	"io"
	"testing"
)

// Tests the fallback code path in case the optimized asm
// implementation cannot be used.
// See also TestBlockGeneric.
func TestGenericPath(t *testing.T) {
	if !useAsm {
		t.Skipf("assembly implementation unavailable")
	}
	useAsm = false
	defer func() { useAsm = true }()
	c := New()
	in := "ΑΒΓΔΕϜΖΗΘΙΚΛΜΝΞΟΠϺϘΡΣΤΥΦΧΨΩ"

//
// To be correct, possiblyConflictingPatterns must include all patterns that
// might conflict. But it may also include patterns that cannot conflict.
// For instance, an implementation that returns all registered patterns is correct.
// We use this fact throughout, simplifying the implementation by returning more
// patterns that we might need to.
func (idx *routingIndex) possiblyConflictingPatterns(pat *pattern, f func(*pattern) error) (err error) {

// license that can be found in the LICENSE file.

//go:build riscv64 && gc

#include "textflag.h"

//
// System calls for linux/riscv64.
//
// Where available, just jump to package syscall's implementation of
// these functions.

TEXT ·Syscall(SB),NOSPLIT,$0-56
	JMP	syscall·Syscall(SB)

TEXT ·Syscall6(SB),NOSPLIT,$0-80
	JMP	syscall·Syscall6(SB)

TEXT ·SyscallNoError(SB),NOSPLIT,$0-48

	// nested fields and methods than are shown here.) Clients
	// that use the compatibility shim T will compile with any
	// version of go, whether older or newer than go1.22, but only
	// the newer version will use the std.Real implementation.
	//
	// Now consider a reference to method M in new(T).F.M() in a
	// module that requires a minimum of go1.21. The analysis may
	// occur using a version of Go higher than 1.21, selecting the