github.com/xingly-cn/shorturl-go@v0.0.0-20220110130535-e21de4659f74/pkg/mod/golang.org/x/sys@v0.0.0-20200323222414-85ca7c5b95cd/cpu/cpu_aix_ppc64.go (about)

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build aix,ppc64
     6  
     7  package cpu
     8  
     9  const cacheLineSize = 128
    10  
    11  const (
    12  	// getsystemcfg constants
    13  	_SC_IMPL     = 2
    14  	_IMPL_POWER8 = 0x10000
    15  	_IMPL_POWER9 = 0x20000
    16  )
    17  
    18  func init() {
    19  	impl := getsystemcfg(_SC_IMPL)
    20  	if impl&_IMPL_POWER8 != 0 {
    21  		PPC64.IsPOWER8 = true
    22  	}
    23  	if impl&_IMPL_POWER9 != 0 {
    24  		PPC64.IsPOWER9 = true
    25  	}
    26  
    27  	Initialized = true
    28  }
    29  
    30  func getsystemcfg(label int) (n uint64) {
    31  	r0, _ := callgetsystemcfg(label)
    32  	n = uint64(r0)
    33  	return
    34  }