Virtualbox built-in debugger does not work

[apianti]

I am trying to debug an EFI application. The built-in debugger does not stop on any set break points of either kind (br or bp). Also there is no way to step through the debugging process. First, the VM starts paused, so you must unpause it in order to run any commands in the debugger, otherwise you get an error about VERR_SEM_OUT_OF_TURN. Once the VM is unpaused though, there is no way to stop it from continuously executing until completion even if a breakpoint is set on the entry point, or anywhere really because the break points are never triggered. The stop command causes the debugger and VM to stop functioning all together. To allow stepping through the the code, the debugger should automatically cause a breakpoint when the firmware hands off to the boot option or add a command to enable/disable stepping (the help says there is a command remstep but it does not work because apparently it's external(?) and I can't find information anywhere on how to add this functionality).