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b4e8571b14
The current implementation for ppc64{,le} only supports linux (through
HWCaps read from /proc/self/auxv) and fails to build e.g. on
aix/ppc64.
Change-Id: I5e1efe75c781fd08bc7bbe797df88295726ba62b
Reviewed-on: https://go-review.googlesource.com/c/162798
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
34 lines
803 B
Go
34 lines
803 B
Go
// Copyright 2018 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 linux
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// +build ppc64 ppc64le
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package cpu
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const cacheLineSize = 128
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// HWCAP/HWCAP2 bits. These are exposed by the kernel.
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const (
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// ISA Level
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_PPC_FEATURE2_ARCH_2_07 = 0x80000000
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_PPC_FEATURE2_ARCH_3_00 = 0x00800000
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// CPU features
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_PPC_FEATURE2_DARN = 0x00200000
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_PPC_FEATURE2_SCV = 0x00100000
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)
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func doinit() {
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// HWCAP2 feature bits
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PPC64.IsPOWER8 = isSet(hwCap2, _PPC_FEATURE2_ARCH_2_07)
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PPC64.IsPOWER9 = isSet(hwCap2, _PPC_FEATURE2_ARCH_3_00)
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PPC64.HasDARN = isSet(hwCap2, _PPC_FEATURE2_DARN)
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PPC64.HasSCV = isSet(hwCap2, _PPC_FEATURE2_SCV)
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}
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func isSet(hwc uint, value uint) bool {
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return hwc&value != 0
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}
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