sp := ctxt.sp()
	reason := *(*string)(unsafe.Pointer(uintptr(sp) + 8))
	h.err = plainError(reason)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 16
func (h *debugCallHandler) restoreSigContext(ctxt *sigctxt) {
	// Restore all registers except for pc and sp
	pc, sp := ctxt.pc(), ctxt.sp()
	*ctxt.regs() = h.sigCtxt.savedRegs
	ctxt.set_pc(pc + 4)
	ctxt.set_sp(sp)
}

	sp := ctxt.sp()
	reason := *(*string)(unsafe.Pointer(uintptr(sp) + 40))
	h.err = plainError(reason)
	ctxt.set_pc(ctxt.pc() + 4)
}

// case 16
func (h *debugCallHandler) restoreSigContext(ctxt *sigctxt) {
	// Restore all registers except for pc and sp
	pc, sp := ctxt.pc(), ctxt.sp()
	*ctxt.cregs() = h.sigCtxt.savedRegs
	ctxt.set_pc(pc + 4)
	ctxt.set_sp(sp)
}

		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")
		notewakeup(&h.done)
	}
	// Resume execution.
	return true

// 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) {
	// Restore all registers except RIP and RSP.
	rip, rsp := ctxt.rip(), ctxt.rsp()
	fp := ctxt.regs().fpstate
	*ctxt.regs() = h.sigCtxt.savedRegs
	ctxt.regs().fpstate = fp
	*fp = h.sigCtxt.savedFP