SA_RESTART = C.SA_RESTART
	SA_ONSTACK = C.SA_ONSTACK

	SIGHUP    = C.SIGHUP
	SIGINT    = C.SIGINT
	SIGQUIT   = C.SIGQUIT
	SIGILL    = C.SIGILL
	SIGTRAP   = C.SIGTRAP
	SIGABRT   = C.SIGABRT
	SIGEMT    = C.SIGEMT
	SIGFPE    = C.SIGFPE
	SIGKILL   = C.SIGKILL
	SIGBUS    = C.SIGBUS
	SIGSEGV   = C.SIGSEGV
	SIGSYS    = C.SIGSYS
	SIGPIPE   = C.SIGPIPE
	SIGALRM   = C.SIGALRM
	SIGTERM   = C.SIGTERM
	SIGURG    = C.SIGURG

	// rather than at the top of it.
	param := tforkt{
		tf_tcb:   unsafe.Pointer(&mp.tls[0]),
		tf_tid:   nil, // minit will record tid
		tf_stack: uintptr(stk) - goarch.PtrSize,
	}

	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {
		errno := tfork(&param, unsafe.Sizeof(param), mp, mp.g0, abi.FuncPCABI0(mstart))
		// tfork returns negative errno
		return -errno
	})

		writeErrStr(failthreadcreate)
		exit(1)
	}

	// Finally, create the thread. It starts at mstart_stub, which does some low-level
	// setup and then calls mstart.
	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	err := retryOnEAGAIN(func() int32 {
		return pthread_create(&attr, abi.FuncPCABI0(mstart_stub), unsafe.Pointer(mp))
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)
	if err != 0 {

	UMTX_OP_WAKE_PRIVATE      = C.UMTX_OP_WAKE_PRIVATE

	SIGHUP    = C.SIGHUP
	SIGINT    = C.SIGINT
	SIGQUIT   = C.SIGQUIT
	SIGILL    = C.SIGILL
	SIGTRAP   = C.SIGTRAP
	SIGABRT   = C.SIGABRT
	SIGEMT    = C.SIGEMT
	SIGFPE    = C.SIGFPE
	SIGKILL   = C.SIGKILL
	SIGBUS    = C.SIGBUS
	SIGSEGV   = C.SIGSEGV
	SIGSYS    = C.SIGSYS
	SIGPIPE   = C.SIGPIPE
	SIGALRM   = C.SIGALRM
	SIGTERM   = C.SIGTERM

	SI_KERNEL = C.SI_KERNEL
	SI_TIMER  = C.SI_TIMER

	SIGHUP    = C.SIGHUP
	SIGINT    = C.SIGINT
	SIGQUIT   = C.SIGQUIT
	SIGILL    = C.SIGILL
	SIGTRAP   = C.SIGTRAP
	SIGABRT   = C.SIGABRT
	SIGBUS    = C.SIGBUS
	SIGFPE    = C.SIGFPE
	SIGKILL   = C.SIGKILL
	SIGUSR1   = C.SIGUSR1
	SIGSEGV   = C.SIGSEGV
	SIGUSR2   = C.SIGUSR2
	SIGPIPE   = C.SIGPIPE
	SIGALRM   = C.SIGALRM
	SIGSTKFLT = C.SIGSTKFLT

	SA_RESTART = C.SA_RESTART
	SA_ONSTACK = C.SA_ONSTACK

	SIGHUP    = C.SIGHUP
	SIGINT    = C.SIGINT
	SIGQUIT   = C.SIGQUIT
	SIGILL    = C.SIGILL
	SIGTRAP   = C.SIGTRAP
	SIGABRT   = C.SIGABRT
	SIGEMT    = C.SIGEMT
	SIGFPE    = C.SIGFPE
	SIGKILL   = C.SIGKILL
	SIGBUS    = C.SIGBUS
	SIGSEGV   = C.SIGSEGV
	SIGSYS    = C.SIGSYS
	SIGPIPE   = C.SIGPIPE
	SIGALRM   = C.SIGALRM
	SIGTERM   = C.SIGTERM
	SIGURG    = C.SIGURG

	// Initialize stack for handling strings from the
	// errstr system call, as used in package syscall.
	mp.errstr = (*byte)(mallocgc(_ERRMAX, nil, true))
}

func sigsave(p *sigset) {
}

func msigrestore(sigmask sigset) {
}

//go:nosplit
//go:nowritebarrierrec
func clearSignalHandlers() {
}

func sigblock(exiting bool) {
}

	SA_RESTART = C.SA_RESTART
	SA_ONSTACK = C.SA_ONSTACK

	SIGHUP    = C.SIGHUP
	SIGINT    = C.SIGINT
	SIGQUIT   = C.SIGQUIT
	SIGILL    = C.SIGILL
	SIGTRAP   = C.SIGTRAP
	SIGABRT   = C.SIGABRT
	SIGEMT    = C.SIGEMT
	SIGFPE    = C.SIGFPE
	SIGKILL   = C.SIGKILL
	SIGBUS    = C.SIGBUS
	SIGSEGV   = C.SIGSEGV
	SIGSYS    = C.SIGSYS
	SIGPIPE   = C.SIGPIPE
	SIGALRM   = C.SIGALRM
	SIGTERM   = C.SIGTERM
	SIGURG    = C.SIGURG

	KeepAlive(new)
	KeepAlive(old)
}
func sigaction_trampoline()

//go:nosplit
//go:cgo_unsafe_args
func sigprocmask(how uint32, new *sigset, old *sigset) {
	// sigprocmask is called from sigsave, which is called from needm.
	// As such, we have to be able to run with no g here.
	asmcgocall_no_g(unsafe.Pointer(abi.FuncPCABI0(sigprocmask_trampoline)), unsafe.Pointer(&how))

	PTHREAD_CREATE_DETACHED = C.PTHREAD_CREATE_DETACHED

	SIGHUP    = C.SIGHUP
	SIGINT    = C.SIGINT
	SIGQUIT   = C.SIGQUIT
	SIGILL    = C.SIGILL
	SIGTRAP   = C.SIGTRAP
	SIGABRT   = C.SIGABRT
	SIGEMT    = C.SIGEMT
	SIGFPE    = C.SIGFPE
	SIGKILL   = C.SIGKILL
	SIGBUS    = C.SIGBUS
	SIGSEGV   = C.SIGSEGV
	SIGSYS    = C.SIGSYS
	SIGPIPE   = C.SIGPIPE
	SIGALRM   = C.SIGALRM
	SIGTERM   = C.SIGTERM
	SIGURG    = C.SIGURG