[RFC] Non-executable stack on SPARC

[Andrew Cagney]

> Date: Sun, 1 Feb 2004 18:48:19 +0100 (CET)
>> From: Mark Kettenis <kettenis@chello.nl>
>> 
>>    My line of thought is that it's IMHO fundamentally wrong to push
>>    target- or architecture-specific details into the application level of
>>    GDB, which is what infrun.c is.  infrun.c should deal with high-level
>>    logic of handling a stopped inferior, it should not IMHO know about
>>    intricacies of specific targets.
>> 
>> The question is to what extent this is an intricacy of a specific
>> target.
> 
> 
> I think that the set of signals, apart of SIGTRAP, that can express a
> breakpoint on a given target/architecture is something infrun.c
> shouldn't know about.

Yes.

Here, though, we don't have the case of a just-executed breakpoint, 
rather we have a not-yet-executed segmentation fault.  To implement VM 
based breakpoints and watchpoints GDB will need to be able to 
differentiate between the two.  Hence, I think making this edge case 
visible in infrun is better.

enjoy,
Andrew