type sigactiont struct {
	sa_flags  int32
	pad_cgo_0 [4]byte
	_funcptr  [8]byte
	sa_mask   sigset
}

type fpregset struct {
	fp_reg_set [528]byte
}

type mcontext struct {
	gregs  [28]int64
	fpregs fpregset
}

type ucontext struct {
	uc_flags    uint64
	uc_link     *ucontext
	uc_sigmask  sigset
	uc_stack    stackt
	pad_cgo_0   [8]byte
	uc_mcontext mcontext
	uc_filler   [5]int64

//
//go:nosplit
func setSignalstackSP(s *stackt, sp uintptr) {
	s.ss_sp = sp
}

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	mask.__bits[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
}

func sigdelset(mask *sigset, i int) {
	mask.__bits[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
}

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
}

	_EWOULDBLOCK = _EAGAIN
	_ENOTSUP     = 91

	// From OpenBSD's sys/time.h
	_CLOCK_REALTIME  = 0
	_CLOCK_VIRTUAL   = 1
	_CLOCK_PROF      = 2
	_CLOCK_MONOTONIC = 3
)

type sigset uint32

var sigset_all = ^sigset(0)

// From OpenBSD's <sys/sysctl.h>
const (
	_CTL_HW        = 6
	_HW_NCPU       = 3
	_HW_PAGESIZE   = 7
	_HW_NCPUONLINE = 25
)

func sysctlInt(mib []uint32) (int32, bool) {

//go:nosplit
func setSignalstackSP(s *stackt, sp uintptr) {
	*(*uintptr)(unsafe.Pointer(&s.ss_sp)) = sp
}

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	mask.__sigbits[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
}

func sigdelset(mask *sigset, i int) {
	mask.__sigbits[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
}

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
}

//
//go:nosplit
func setSignalstackSP(s *stackt, sp uintptr) {
	s.ss_sp = sp
}

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	mask.__bits[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
}

func sigdelset(mask *sigset, i int) {
	mask.__bits[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
}

//go:nosplit
func (c *sigctxt) fixsigcode(sig uint32) {
}

package runtime

import "unsafe"

var NonblockingPipe = nonblockingPipe
var Fcntl = fcntl
var Closeonexec = closeonexec

func sigismember(mask *sigset, i int) bool {
	clear := *mask
	sigdelset(&clear, i)
	return clear != *mask
}

func Sigisblocked(i int) bool {
	var sigmask sigset
	sigprocmask(_SIG_SETMASK, nil, &sigmask)
	return sigismember(&sigmask, i)
}

type M = m

var waitForSigusr1 struct {
	rdpipe int32

	_EV_CLEAR     = 0x20
	_EV_RECEIPT   = 0
	_EV_ERROR     = 0x4000
	_EV_EOF       = 0x8000
	_EVFILT_READ  = 0x0
	_EVFILT_WRITE = 0x1
	_EVFILT_USER  = 0x8

	_NOTE_TRIGGER = 0x1000000
)

type sigset struct {
	__bits [4]uint32
}

type siginfo struct {
	_signo  int32
	_code   int32
	_errno  int32
	_reason [20]byte
}

type stackt struct {
	ss_sp    uintptr
	ss_size  uintptr

	_EV_CLEAR     = 0x20
	_EV_RECEIPT   = 0
	_EV_ERROR     = 0x4000
	_EV_EOF       = 0x8000
	_EVFILT_READ  = 0x0
	_EVFILT_WRITE = 0x1
	_EVFILT_USER  = 0x8

	_NOTE_TRIGGER = 0x1000000
)

type sigset struct {
	__bits [4]uint32
}

type siginfo struct {
	_signo  int32
	_code   int32
	_errno  int32
	_pad    int32
	_reason [24]byte
}

type stackt struct {
	ss_sp     uintptr

	_EV_CLEAR     = 0x20
	_EV_RECEIPT   = 0
	_EV_ERROR     = 0x4000
	_EV_EOF       = 0x8000
	_EVFILT_READ  = 0x0
	_EVFILT_WRITE = 0x1
	_EVFILT_USER  = 0x8

	_NOTE_TRIGGER = 0x1000000
)

type sigset struct {
	__bits [4]uint32
}

type siginfo struct {
	_signo   int32
	_code    int32
	_errno   int32
	_reason  uintptr
	_reasonx [16]byte
}

type stackt struct {
	ss_sp    uintptr

	_EV_CLEAR     = 0x20
	_EV_RECEIPT   = 0
	_EV_ERROR     = 0x4000
	_EV_EOF       = 0x8000
	_EVFILT_READ  = 0x0
	_EVFILT_WRITE = 0x1
	_EVFILT_USER  = 0x8

	_NOTE_TRIGGER = 0x1000000
)

type sigset struct {
	__bits [4]uint32
}

type siginfo struct {
	_signo   int32
	_code    int32
	_errno   int32
	_reason  uintptr
	_reasonx [16]byte
}

type stackt struct {
	ss_sp    uintptr