From 96bd0b1d4c34bf22d8fa6d4710cae334b842f37d Mon Sep 17 00:00:00 2001 From: Martin Möhrmann Date: Wed, 28 Oct 2020 22:43:59 +0100 Subject: runtime: move ppc64/aix cpu feature detection to internal/cpu MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Additionally removed unused PPC64.IsPOWER8 CPU feature detection. Change-Id: I1411b03d396a72e08d6d51f8a1d1bad49eaa720e Reviewed-on: https://go-review.googlesource.com/c/go/+/266077 Trust: Martin Möhrmann Run-TryBot: Tobias Klauser TryBot-Result: Go Bot Reviewed-by: Tobias Klauser --- src/internal/cpu/cpu_ppc64x_linux.go | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 src/internal/cpu/cpu_ppc64x_linux.go (limited to 'src/internal/cpu/cpu_ppc64x_linux.go') diff --git a/src/internal/cpu/cpu_ppc64x_linux.go b/src/internal/cpu/cpu_ppc64x_linux.go new file mode 100644 index 0000000000..73b191436d --- /dev/null +++ b/src/internal/cpu/cpu_ppc64x_linux.go @@ -0,0 +1,29 @@ +// Copyright 2020 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 ppc64 ppc64le + +package cpu + +// ppc64 doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2. +// These are initialized by archauxv and should not be changed after they are +// initialized. +var HWCap uint +var HWCap2 uint + +// HWCAP bits. These are exposed by Linux. +const ( + // ISA Level + hwcap2_ARCH_3_00 = 0x00800000 + + // CPU features + hwcap2_DARN = 0x00200000 + hwcap2_SCV = 0x00100000 +) + +func osinit() { + PPC64.IsPOWER9 = isSet(HWCap2, hwcap2_ARCH_3_00) + PPC64.HasDARN = isSet(HWCap2, hwcap2_DARN) + PPC64.HasSCV = isSet(HWCap2, hwcap2_SCV) +} -- cgit v1.3