Re: [RFA] enable software single step on alpha-osf

[Joel Brobecker <brobecker@gnat.com>]

>   2 - However I should hold this change for now because you think I should
>       write the adjusted PC value back to the target, by adding something
>       like "write_pc_pid (stop_pc, ecs->ptid)"
> 
>       I will verify the impact of such a change, and report.

Good news :). Adding this does not introduce any regression, so no red
dragon lurking so far...

>   3 - Assuming we get all issues in this RFA resolved, then I will start
>       looking at the addition of the software_singlestep flag.

I am starting to work on this one. 

I suggest for this RFA to:
  - define a new boolean software_singlestep_p
  - set it at the same time we adjust the PC when detecting sw single
    step.
  - Change the value of not_a_sw_breakpoint in the call to
    bpstat_stop_status() to prepend a "sw_single_step_p ||".

As a next patch, we would add a new sw_single_step_p parameter to 
bpstat_stop_status() to pass this value separately. 

-- 
Joel