// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// castagnoliUpdate updates the non-inverted crc with the given data.

// func castagnoliUpdate(crc uint32, p []byte) uint32
TEXT ·castagnoliUpdate(SB),NOSPLIT,$0-36
	MOVWU	crc+0(FP), R9  // CRC value
	MOVD	p+8(FP), R13  // data pointer
	MOVD	p_len+16(FP), R11  // len(p)

update:
	CMP	$16, R11

// ARM64-specific hardware-assisted CRC32 algorithms. See crc32.go for a
// description of the interface that each architecture-specific file
// implements.

package crc32

import "internal/cpu"

func castagnoliUpdate(crc uint32, p []byte) uint32
func ieeeUpdate(crc uint32, p []byte) uint32

func archAvailableCastagnoli() bool {
	return cpu.ARM64.HasCRC32
}

func archInitCastagnoli() {
	if !cpu.ARM64.HasCRC32 {