golang.org/x/sys@v0.20.1-0.20240517151509-673e0f94c16d/cpu/cpu_aix.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  //go:build aix
     6  
     7  package cpu
     8  
     9  const (
    10  	// getsystemcfg constants
    11  	_SC_IMPL     = 2
    12  	_IMPL_POWER8 = 0x10000
    13  	_IMPL_POWER9 = 0x20000
    14  )
    15  
    16  func archInit() {
    17  	impl := getsystemcfg(_SC_IMPL)
    18  	if impl&_IMPL_POWER8 != 0 {
    19  		PPC64.IsPOWER8 = true
    20  	}
    21  	if impl&_IMPL_POWER9 != 0 {
    22  		PPC64.IsPOWER8 = true
    23  		PPC64.IsPOWER9 = true
    24  	}
    25  
    26  	Initialized = true
    27  }
    28  
    29  func getsystemcfg(label int) (n uint64) {
    30  	r0, _ := callgetsystemcfg(label)
    31  	n = uint64(r0)
    32  	return
    33  }