Re: [RFC] [PATCH] selective signal ptracing

[Josh Boyer]

On 6/16/07, Roland McGrath <roland@xxxxxxxxxx> wrote:
> > What are the issues with arch like ARM ?
>
> The interesting class ARM belongs to is machines that don't (or don't
> always) have hardware support for single-step.  Maintaining the status quo
> of how PTRACE_SINGLESTEP functions on these machines is different in
> implementation under utrace than it is for machines that always use
> hardware support.  That is the only special complication for ARM, and it is
> not really very complicated.  Apparently the way I described the issue in
> the past was easily misunderstood.

That isn't just ARM.  There are some embedded PowerPC chips that lack
an easily usable hardware single step.  Just an FYI.

josh
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