cpu_linux_ppc64x.go

     1  // Copyright 2018 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 linux && (ppc64 || ppc64le)
     6  
     7  package cpu
     8  
     9  // HWCAP/HWCAP2 bits. These are exposed by the kernel.
    10  const (
    11  	// ISA Level
    12  	_PPC_FEATURE2_ARCH_2_07 = 0x80000000
    13  	_PPC_FEATURE2_ARCH_3_00 = 0x00800000
    14  
    15  	// CPU features
    16  	_PPC_FEATURE2_DARN = 0x00200000
    17  	_PPC_FEATURE2_SCV  = 0x00100000
    18  )
    19  
    20  func doinit() {
    21  	// HWCAP2 feature bits
    22  	PPC64.IsPOWER8 = isSet(hwCap2, _PPC_FEATURE2_ARCH_2_07)
    23  	PPC64.IsPOWER9 = isSet(hwCap2, _PPC_FEATURE2_ARCH_3_00)
    24  	PPC64.HasDARN = isSet(hwCap2, _PPC_FEATURE2_DARN)
    25  	PPC64.HasSCV = isSet(hwCap2, _PPC_FEATURE2_SCV)
    26  }
    27  
    28  func isSet(hwc uint, value uint) bool {
    29  	return hwc&value != 0
    30  }
    31
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