gcc/libgo/go/hash/crc32/crc32_arm64.go
Ian Lance Taylor 1a2f01efa6 libgo: update to Go1.10beta1
Update the Go library to the 1.10beta1 release.
    
    Requires a few changes to the compiler for modifications to the map
    runtime code, and to handle some nowritebarrier cases in the runtime.
    
    Reviewed-on: https://go-review.googlesource.com/86455

gotools/:
	* Makefile.am (go_cmd_vet_files): New variable.
	(go_cmd_buildid_files, go_cmd_test2json_files): New variables.
	(s-zdefaultcc): Change from constants to functions.
	(noinst_PROGRAMS): Add vet, buildid, and test2json.
	(cgo$(EXEEXT)): Link against $(LIBGOTOOL).
	(vet$(EXEEXT)): New target.
	(buildid$(EXEEXT)): New target.
	(test2json$(EXEEXT)): New target.
	(install-exec-local): Install all $(noinst_PROGRAMS).
	(uninstall-local): Uninstasll all $(noinst_PROGRAMS).
	(check-go-tool): Depend on $(noinst_PROGRAMS).  Copy down
	objabi.go.
	(check-runtime): Depend on $(noinst_PROGRAMS).
	(check-cgo-test, check-carchive-test): Likewise.
	(check-vet): New target.
	(check): Depend on check-vet.  Look at cmd_vet-testlog.
	(.PHONY): Add check-vet.
	* Makefile.in: Rebuild.

From-SVN: r256365
2018-01-09 01:23:08 +00:00

55 lines
1.2 KiB
Go

// 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.
// +build ignore
// 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)
}