_NSIG        = 129
	_SIG_BLOCK   = 1
	_SIG_UNBLOCK = 2
	_SIG_SETMASK = 3
)

type sigset [2]uint64

var sigset_all = sigset{^uint64(0), ^uint64(0)}

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	(*mask)[(i-1)/64] |= 1 << ((uint32(i) - 1) & 63)
}

func sigdelset(mask *sigset, i int) {
	(*mask)[(i-1)/64] &^= 1 << ((uint32(i) - 1) & 63)
}

//go:nosplit

// The standard Linux sigset type on big-endian 64-bit machines.

//go:build linux && (ppc64 || s390x)

package runtime

const (
	_SS_DISABLE  = 2
	_NSIG        = 65
	_SIG_BLOCK   = 0
	_SIG_UNBLOCK = 1
	_SIG_SETMASK = 2
)

type sigset uint64

var sigset_all = sigset(^uint64(0))

//go:nosplit
//go:nowritebarrierrec
func sigaddset(mask *sigset, i int) {
	if i > 64 {

)

// It's hard to tease out exactly how big a Sigset is, but
// rt_sigprocmask crashes if we get it wrong, so if binaries
// are running, this is right.
type sigset [2]uint32

var sigset_all = sigset{^uint32(0), ^uint32(0)}

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

func sigdelset(mask *sigset, i int) {

	_SIG_BLOCK   = 1
	_SIG_UNBLOCK = 2
	_SIG_SETMASK = 3
)

type sigset [4]uint32

var sigset_all = sigset{^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)}

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

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

//go:nosplit

	_PTHREAD_CREATE_DETACHED = 0x1

	__SC_PAGE_SIZE        = 0x30
	__SC_NPROCESSORS_ONLN = 0x48

	_F_SETFL = 0x4
	_F_GETFD = 0x1
	_F_GETFL = 0x3
)

type sigset [4]uint64

var sigset_all = sigset{^uint64(0), ^uint64(0), ^uint64(0), ^uint64(0)}

type siginfo struct {
	si_signo   int32
	si_errno   int32
	si_code    int32
	si_pid     int32
	si_uid     uint32
	si_status  int32

// the stack is safe to reclaim.
//
//go:noescape
func exitThread(wait *atomic.Uint32)

//go:noescape
func obsdsigprocmask(how int32, new sigset) sigset

//go:nosplit
//go:nowritebarrierrec
func sigprocmask(how int32, new, old *sigset) {
	n := sigset(0)
	if new != nil {
		n = *new
	}
	r := obsdsigprocmask(how, n)
	if old != nil {
		*old = r
	}
}

//
//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) {
}

	osyield()
}

type sigset struct{}

// Called to initialize a new m (including the bootstrap m).
// Called on the parent thread (main thread in case of bootstrap), can allocate memory.
func mpreinit(mp *m) {
	mp.gsignal = malg(32 * 1024)
	mp.gsignal.m = mp
}

//go:nosplit
func usleep_no_g(usec uint32) {
	usleep(usec)
}

//go:nosplit
func sigsave(p *sigset) {
}

//go:nosplit

	_SIG_BLOCK   = 1
	_SIG_UNBLOCK = 2
	_SIG_SETMASK = 3
	_SS_DISABLE  = 4
)

//extern SigTabTT runtime·sigtab[];

type sigset uint32

var sigset_all = ^sigset(0)

//go:nosplit
//go:nowritebarrierrec
func setsig(i uint32, fn uintptr) {
	var sa usigactiont
	sa.sa_flags = _SA_SIGINFO | _SA_ONSTACK | _SA_RESTART
	sa.sa_mask = ^uint32(0)

	prio  uint16
}

type lwpparams struct {
	start_func uintptr
	arg        unsafe.Pointer
	stack      uintptr
	tid1       unsafe.Pointer // *int32
	tid2       unsafe.Pointer // *int32
}

type sigset struct {
	__bits [4]uint32
}

type stackt struct {
	ss_sp     uintptr
	ss_size   uintptr
	ss_flags  int32
	pad_cgo_0 [4]byte
}

type siginfo struct {
	si_signo  int32