Re: [OpenOCD-devel] OpenOCD and NUCLEO-F746ZG

[Liviu I. <il...@li...>]

> On 31 May 2016, at 10:56, Paul Fertser <fer...@gm...> wrote:
> 
>> Step over jumps off into another function: step over carries on through that
>> functions statements but does not return to main.cpp
> 
> If you compile with -O0 the debugging session will likely be more
> predictable.

since you are using GNU ARM Eclipse OpenOCD, I assume you are also using the GNU ARM Eclipse plug-ins, so if you create projects with the wizards, by default you get a Debug configuration, with -Og and a Release configuration, with -Os.

-Og was added to GCC as a debugger friendly optimisation level. the code is not as bad as with -O0, but still tries to preserve the original order, so the debugger shouldn't be very jumpy. -Os is optimised for size, and the code may be reordered, making debugging more difficult.

however, as Paul said, if you want a very predictable debugging session, use -O0.

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so, apart from the jumpy debugger, is your OpenOCD configuration functional now?


regards,

Liviu