os_linux_mips64x.go

     1  // Copyright 2015 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 && (mips64 || mips64le)
     6  
     7  package runtime
     8  
     9  import "internal/cpu"
    10  
    11  func archauxv(tag, val uintptr) {
    12  	switch tag {
    13  	case _AT_HWCAP:
    14  		cpu.HWCap = uint(val)
    15  	}
    16  }
    17  
    18  func osArchInit() {}
    19  
    20  //go:nosplit
    21  func cputicks() int64 {
    22  	// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
    23  	return nanotime()
    24  }
    25  
    26  const (
    27  	_SS_DISABLE  = 2
    28  	_NSIG        = 129
    29  	_SIG_BLOCK   = 1
    30  	_SIG_UNBLOCK = 2
    31  	_SIG_SETMASK = 3
    32  )
    33  
    34  type sigset [2]uint64
    35  
    36  var sigset_all = sigset{^uint64(0), ^uint64(0)}
    37  
    38  //go:nosplit
    39  //go:nowritebarrierrec
    40  func sigaddset(mask *sigset, i int) {
    41  	(*mask)[(i-1)/64] |= 1 << ((uint32(i) - 1) & 63)
    42  }
    43  
    44  func sigdelset(mask *sigset, i int) {
    45  	(*mask)[(i-1)/64] &^= 1 << ((uint32(i) - 1) & 63)
    46  }
    47  
    48  //go:nosplit
    49  func sigfillset(mask *[2]uint64) {
    50  	(*mask)[0], (*mask)[1] = ^uint64(0), ^uint64(0)
    51  }
    52
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