github.com/geraldss/go/src@v0.0.0-20210511222824-ac7d0ebfc235/runtime/os_linux_be64.go (about)

     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  // The standard GNU/Linux sigset type on big-endian 64-bit machines.
     6  
     7  // +build linux
     8  // +build ppc64 s390x
     9  
    10  package runtime
    11  
    12  const (
    13  	_SS_DISABLE  = 2
    14  	_NSIG        = 65
    15  	_SI_USER     = 0
    16  	_SIG_BLOCK   = 0
    17  	_SIG_UNBLOCK = 1
    18  	_SIG_SETMASK = 2
    19  )
    20  
    21  type sigset uint64
    22  
    23  var sigset_all = sigset(^uint64(0))
    24  
    25  //go:nosplit
    26  //go:nowritebarrierrec
    27  func sigaddset(mask *sigset, i int) {
    28  	if i > 64 {
    29  		throw("unexpected signal greater than 64")
    30  	}
    31  	*mask |= 1 << (uint(i) - 1)
    32  }
    33  
    34  func sigdelset(mask *sigset, i int) {
    35  	if i > 64 {
    36  		throw("unexpected signal greater than 64")
    37  	}
    38  	*mask &^= 1 << (uint(i) - 1)
    39  }
    40  
    41  //go:nosplit
    42  func sigfillset(mask *uint64) {
    43  	*mask = ^uint64(0)
    44  }