os_linux_mipsx.go

     1  // Copyright 2016 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 && (mips || mipsle)
     6  
     7  package runtime
     8  
     9  func archauxv(tag, val uintptr) {
    10  }
    11  
    12  func osArchInit() {}
    13  
    14  //go:nosplit
    15  func cputicks() int64 {
    16  	// Currently cputicks() is used in blocking profiler and to seed fastrand().
    17  	// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
    18  	return nanotime()
    19  }
    20  
    21  const (
    22  	_SS_DISABLE  = 2
    23  	_NSIG        = 128 + 1
    24  	_SI_USER     = 0
    25  	_SIG_BLOCK   = 1
    26  	_SIG_UNBLOCK = 2
    27  	_SIG_SETMASK = 3
    28  )
    29  
    30  type sigset [4]uint32
    31  
    32  var sigset_all = sigset{^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)}
    33  
    34  //go:nosplit
    35  //go:nowritebarrierrec
    36  func sigaddset(mask *sigset, i int) {
    37  	(*mask)[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
    38  }
    39  
    40  func sigdelset(mask *sigset, i int) {
    41  	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
    42  }
    43  
    44  //go:nosplit
    45  func sigfillset(mask *[4]uint32) {
    46  	(*mask)[0], (*mask)[1], (*mask)[2], (*mask)[3] = ^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)
    47  }
    48
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