// Copyright 2017 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. // 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 var hasCRC32 = cpu.ARM64.HasCRC32 func archAvailableCastagnoli() bool { return hasCRC32 } func archInitCastagnoli() { if !hasCRC32 { panic("arch-specific crc32 instruction for Catagnoli not available") } } func archUpdateCastagnoli(crc uint32, p []byte) uint32 { if !hasCRC32 { panic("arch-specific crc32 instruction for Castagnoli not available") } return ^castagnoliUpdate(^crc, p) } func archAvailableIEEE() bool { return hasCRC32 } func archInitIEEE() { if !hasCRC32 { panic("arch-specific crc32 instruction for IEEE not available") } } func archUpdateIEEE(crc uint32, p []byte) uint32 { if !hasCRC32 { panic("arch-specific crc32 instruction for IEEE not available") } return ^ieeeUpdate(^crc, p) }