cpu_mips64x.mx raw

   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 mips64 || mips64le
   6  
   7  package cpu
   8  
   9  const CacheLinePadSize = 32
  10  
  11  // This is initialized by archauxv and should not be changed after it is
  12  // initialized.
  13  var HWCap uint
  14  
  15  // HWCAP bits. These are exposed by the Linux kernel 5.4.
  16  const (
  17  	// CPU features
  18  	hwcap_MIPS_MSA = 1 << 1
  19  )
  20  
  21  func doinit() {
  22  	options = []option{
  23  		{Name: "msa", Feature: &MIPS64X.HasMSA},
  24  	}
  25  
  26  	// HWCAP feature bits
  27  	MIPS64X.HasMSA = isSet(HWCap, hwcap_MIPS_MSA)
  28  }
  29  
  30  func isSet(hwc uint, value uint) bool {
  31  	return hwc&value != 0
  32  }
  33