go cpu_ppc64x_linux 源码
golang cpu_ppc64x_linux 代码
文件路径：/src/internal/cpu/cpu_ppc64x_linux.go
// 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.
//go: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_2_07 = 0x80000000
hwcap2_ARCH_3_00 = 0x00800000
hwcap2_ARCH_3_1 = 0x00040000
// CPU features
hwcap2_DARN = 0x00200000
hwcap2_SCV = 0x00100000
)
func osinit() {
PPC64.IsPOWER8 = isSet(HWCap2, hwcap2_ARCH_2_07)
PPC64.IsPOWER9 = isSet(HWCap2, hwcap2_ARCH_3_00)
PPC64.IsPOWER10 = isSet(HWCap2, hwcap2_ARCH_3_1)
PPC64.HasDARN = isSet(HWCap2, hwcap2_DARN)
PPC64.HasSCV = isSet(HWCap2, hwcap2_SCV)
}
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