[cdt-dev] dsf gdb based regsiter view read

["Lai, Winnie" <wlai@xxxxxx>]

 

I notice the following read pattern, and I wonder whether this is expected from design point of view.

 

I have a program and launch dsf-gdb debug session.

Open a register view, that has about 50 registers in total.

I adjust the register view so that only 1 register is visible, say R1.

I then step through the program one step at a time say for 10 steps.

 

It turns out that the register view call register service in an pattern of alternate read size,

Step 1 - Read 1 register R1

Step 2 - Read all 50 registers

Step 3 - Read R1

Step 4 - Read all 50 registers

Step 5 - Read R1

Step 6 - Read all 50 registers

Step 7 - Read R1

Step 8 - Read all registers

Step 8 - Read R1

Step 10 - Read all 50 registers

 

I would expect each step will only read 1 register namely R1 in this case, or perhaps 2 registers when taking partial visibility of a row into account. I did not expect it would read all 50 registers from time to time.

Could anyone comment whether this is correct and why this behaves like that?

 

Thanks,

Winnie