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53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build ignore
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// ARM64-specific hardware-assisted CRC32 algorithms. See crc32.go for a
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// description of the interface that each architecture-specific file
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// implements.
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package crc32
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import "internal/cpu"
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func castagnoliUpdate(crc uint32, p []byte) uint32
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func ieeeUpdate(crc uint32, p []byte) uint32
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func archAvailableCastagnoli() bool {
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return cpu.ARM64.HasCRC32
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}
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func archInitCastagnoli() {
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if !cpu.ARM64.HasCRC32 {
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panic("arch-specific crc32 instruction for Catagnoli not available")
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}
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}
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func archUpdateCastagnoli(crc uint32, p []byte) uint32 {
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if !cpu.ARM64.HasCRC32 {
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panic("arch-specific crc32 instruction for Castagnoli not available")
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}
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return ^castagnoliUpdate(^crc, p)
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}
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func archAvailableIEEE() bool {
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return cpu.ARM64.HasCRC32
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}
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func archInitIEEE() {
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if !cpu.ARM64.HasCRC32 {
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panic("arch-specific crc32 instruction for IEEE not available")
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}
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}
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func archUpdateIEEE(crc uint32, p []byte) uint32 {
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if !cpu.ARM64.HasCRC32 {
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panic("arch-specific crc32 instruction for IEEE not available")
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}
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return ^ieeeUpdate(^crc, p)
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}
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