//go:build unix

package runtime

// retryOnEAGAIN retries a function until it does not return EAGAIN.
// It will use an increasing delay between calls, and retry up to 20 times.
// The function argument is expected to return an errno value,
// and retryOnEAGAIN will return any errno value other than EAGAIN.
// If all retries return EAGAIN, then retryOnEAGAIN will return EAGAIN.
func retryOnEAGAIN(fn func() int32) int32 {

		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 {
		writeErrStr(failthreadcreate)
		exit(1)
	}

		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
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)

	if ret != 0 {

		start_func: abi.FuncPCABI0(lwp_start),
		arg:        unsafe.Pointer(mp),
		stack:      uintptr(stk),
		tid1:       nil, // minit will record tid
		tid2:       nil,
	}

	// TODO: Check for error.
	retryOnEAGAIN(func() int32 {
		lwp_create(&params)
		return 0
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)
}

func osinit() {
	ncpu = getncpu()
	if physPageSize == 0 {
		physPageSize = getPageSize()
	}

	}

	// Disable signals during create, so that the new thread starts
	// with signals disabled. It will enable them in minit.
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {
		return pthread_create(&tid, &attr, &tstart, unsafe.Pointer(mp))
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)
	if ret != 0 {

	uc.uc_link = nil
	uc.uc_sigmask = sigset_all

	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)

	lwp_mcontext_init(&uc.uc_mcontext, stk, mp, mp.g0, abi.FuncPCABI0(netbsdMstart))

	ret := retryOnEAGAIN(func() int32 {
		errno := lwp_create(unsafe.Pointer(&uc), _LWP_DETACHED, unsafe.Pointer(&mp.procid))
		// lwp_create returns negative errno
		return -errno
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)

		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 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
}

		parent_tid: nil,
		tls_base:   unsafe.Pointer(&mp.tls[0]),
		tls_size:   unsafe.Sizeof(mp.tls),
	}

	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {
		errno := thr_new(&param, int32(unsafe.Sizeof(param)))
		// thr_new returns negative errno
		return -errno
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)
	if ret != 0 {

	}

	// Disable signals during create, so that the new thread starts
	// with signals disabled. It will enable them in minit.
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret = retryOnEAGAIN(func() int32 {
		return pthread_create(&tid, &attr, abi.FuncPCABI0(tstart_sysvicall), unsafe.Pointer(mp))
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)
	if ret != 0 {

	}

	// Disable signals during clone, so that the new thread starts
	// with signals disabled. It will enable them in minit.
	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {
		r := clone(cloneFlags, stk, unsafe.Pointer(mp), unsafe.Pointer(mp.g0), unsafe.Pointer(abi.FuncPCABI0(mstart)))
		// clone returns positive TID, negative errno.
		// We don't care about the TID.