ROCm (Rocgdb debugger) use queues to pass debug commands?

[It's Me]

Hi , 

In a heterogenous environment , how ROCm / rocgdb pass its debug commands ( example : breakpoint command) to the target ( Example a GPU) . Does the debugger queue it’s debug commands using HSA queues ? If that’s not that case how ? 

What is the role of the driver in this case . 

Thanks