libgo/go/internal/cpu/cpu_mips64x.go

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