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OpenBSD 7.1 onwards expose the aarch64 ISAR0 and ISAR1 registers via sysctl: $ sysctl machdep machdep.compatible=apple,j274 machdep.id_aa64isar0=153421459058925856 machdep.id_aa64isar1=1172796674562 Implement CPU feature detection for openbsd/arm64 based on this information. Updates golang/go#31746 Change-Id: I6dc473d93ccff720582c05b75456de51269bc3e5 Reviewed-on: https://go-review.googlesource.com/c/sys/+/421799 Run-TryBot: Joel Sing <joel@sing.id.au> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Than McIntosh <thanm@google.com> Run-TryBot: Ian Lance Taylor <iant@google.com>
11 lines
281 B
Go
11 lines
281 B
Go
// Copyright 2019 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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//go:build !linux && !netbsd && !openbsd && arm64
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// +build !linux,!netbsd,!openbsd,arm64
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package cpu
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func doinit() {}
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