return false
	}
	f := findfunc(ctxt.sigpc())
	if !(stringslite.HasPrefix(funcname(f), "runtime.debugCall") || stringslite.HasPrefix(funcname(f), "debugCall")) {
		println("trap in unknown function", funcname(f))
		return false
	}
	if !sigctxtAtTrapInstruction(ctxt) {
		println("trap at non-INT3 instruction pc =", hex(ctxt.sigpc()))
		return false
	}

		// we can reliably access it from the panic routines.
		memmove(unsafe.Pointer(mp.notesig), unsafe.Pointer(note), uintptr(len(notestr)+1))
		gp.sig = uint32(sig)
		gp.sigpc = c.pc()

		pc := c.pc()
		sp := c.sp()

		// If we don't recognize the PC as code
		// but we do recognize the top pointer on the stack as code,
		// then assume this was a call to non-code and treat like