go cpu_linux_ppc64x 源码

2022-07-15
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golang cpu_linux_ppc64x 代码

文件路径：/src/vendor/golang.org/x/sys/cpu/cpu_linux_ppc64x.go

// Copyright 2018 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.

//go:build linux && (ppc64 || ppc64le)
// +build linux
// +build ppc64 ppc64le

package cpu

// HWCAP/HWCAP2 bits. These are exposed by the kernel.
const (
	// ISA Level
	_PPC_FEATURE2_ARCH_2_07 = 0x80000000
	_PPC_FEATURE2_ARCH_3_00 = 0x00800000

	// CPU features
	_PPC_FEATURE2_DARN = 0x00200000
	_PPC_FEATURE2_SCV  = 0x00100000
)

func doinit() {
	// HWCAP2 feature bits
	PPC64.IsPOWER8 = isSet(hwCap2, _PPC_FEATURE2_ARCH_2_07)
	PPC64.IsPOWER9 = isSet(hwCap2, _PPC_FEATURE2_ARCH_3_00)
	PPC64.HasDARN = isSet(hwCap2, _PPC_FEATURE2_DARN)
	PPC64.HasSCV = isSet(hwCap2, _PPC_FEATURE2_SCV)
}

func isSet(hwc uint, value uint) bool {
	return hwc&value != 0
}

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本文标签： golang
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