os2_plan9.go

     1  // Copyright 2010 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  // Plan 9-specific system calls
     6  
     7  package runtime
     8  
     9  // open
    10  const (
    11  	_OREAD   = 0
    12  	_OWRITE  = 1
    13  	_ORDWR   = 2
    14  	_OEXEC   = 3
    15  	_OTRUNC  = 16
    16  	_OCEXEC  = 32
    17  	_ORCLOSE = 64
    18  	_OEXCL   = 0x1000
    19  )
    20  
    21  // rfork
    22  const (
    23  	_RFNAMEG  = 1 << 0
    24  	_RFENVG   = 1 << 1
    25  	_RFFDG    = 1 << 2
    26  	_RFNOTEG  = 1 << 3
    27  	_RFPROC   = 1 << 4
    28  	_RFMEM    = 1 << 5
    29  	_RFNOWAIT = 1 << 6
    30  	_RFCNAMEG = 1 << 10
    31  	_RFCENVG  = 1 << 11
    32  	_RFCFDG   = 1 << 12
    33  	_RFREND   = 1 << 13
    34  	_RFNOMNT  = 1 << 14
    35  )
    36  
    37  // notify
    38  const (
    39  	_NCONT = 0
    40  	_NDFLT = 1
    41  )
    42  
    43  type uinptr _Plink
    44  
    45  type tos struct {
    46  	prof struct { // Per process profiling
    47  		pp    *_Plink // known to be 0(ptr)
    48  		next  *_Plink // known to be 4(ptr)
    49  		last  *_Plink
    50  		first *_Plink
    51  		pid   uint32
    52  		what  uint32
    53  	}
    54  	cyclefreq uint64 // cycle clock frequency if there is one, 0 otherwise
    55  	kcycles   int64  // cycles spent in kernel
    56  	pcycles   int64  // cycles spent in process (kernel + user)
    57  	pid       uint32 // might as well put the pid here
    58  	clock     uint32
    59  	// top of stack is here
    60  }
    61  
    62  const (
    63  	_NSIG   = 14  // number of signals in sigtable array
    64  	_ERRMAX = 128 // max length of note string
    65  
    66  	// Notes in runtime·sigtab that are handled by runtime·sigpanic.
    67  	_SIGRFAULT = 2
    68  	_SIGWFAULT = 3
    69  	_SIGINTDIV = 4
    70  	_SIGFLOAT  = 5
    71  	_SIGTRAP   = 6
    72  	_SIGPROF   = 0 // dummy value defined for badsignal
    73  	_SIGQUIT   = 0 // dummy value defined for sighandler
    74  )
    75
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