sp := ctxt.sp()
	memmove(unsafe.Pointer(&h.panic), unsafe.Pointer(uintptr(sp)+8), 2*goarch.PtrSize)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 8
func (h *debugCallHandler) debugCallUnsafe(ctxt *sigctxt) {
	sp := ctxt.sp()
	reason := *(*string)(unsafe.Pointer(uintptr(sp) + 8))
	h.err = plainError(reason)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 16

	sp := ctxt.sp()
	memmove(unsafe.Pointer(&h.panic), unsafe.Pointer(uintptr(sp)+32), 2*goarch.PtrSize)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 8
func (h *debugCallHandler) debugCallUnsafe(ctxt *sigctxt) {
	sp := ctxt.sp()
	reason := *(*string)(unsafe.Pointer(uintptr(sp) + 40))
	h.err = plainError(reason)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 16

		h.debugCallReturn(ctxt)
	case 2:
		// Function panicked. Copy panic out.
		h.debugCallPanicOut(ctxt)
	case 8:
		// Call isn't safe. Get the reason.
		h.debugCallUnsafe(ctxt)
		// Don't wake h.done. We need to transition to status 16 first.
	case 16:
		h.restoreSigContext(ctxt)
		// Done
		notewakeup(&h.done)
	default:
		h.err = plainError("unexpected debugCallV2 status")

// case 2
func (h *debugCallHandler) debugCallPanicOut(ctxt *sigctxt) {
	rsp := ctxt.rsp()
	memmove(unsafe.Pointer(&h.panic), unsafe.Pointer(uintptr(rsp)), 2*goarch.PtrSize)
}

// case 8
func (h *debugCallHandler) debugCallUnsafe(ctxt *sigctxt) {
	rsp := ctxt.rsp()
	reason := *(*string)(unsafe.Pointer(uintptr(rsp)))
	h.err = plainError(reason)
}

// case 16
func (h *debugCallHandler) restoreSigContext(ctxt *sigctxt) {