gdb single stepping takes ages

[Agovic, Sanimir]

> Just after sending the mail recognized that the thread: "Remote Debugging with
> NEXT Command" touches a similar (the same?) issue. A solution mentioned was
> range checking. But in the openocd case it seems already enabled:
> show range-stepping
> Debugger's willingness to use range stepping is on.
> 
This command shows the "willingness" not if it is actually enabled:

(gdb) show range-stepping
Debugger's willingness to use range stepping is on.

(gdb) set range-stepping on
warning: Range stepping is not supported by the current target

Imho, it is a bit confusing.

 -Sanimir

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