[Bug server/30387] gdbserver assert error on arm platform

["simon.marchi at polymtl dot ca" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30387

Simon Marchi <simon.marchi at polymtl dot ca> changed:

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                 CC|                            |simon.marchi at polymtl dot ca

--- Comment #15 from Simon Marchi <simon.marchi at polymtl dot ca> ---
(In reply to Yan, Zhiyong from comment #14)
> (In reply to Luis Machado from comment #13)
> > I wonder if this also reproduces on x86. If so, that would make a better
> > case for urgency of fixing this.
> 
> This issue can't be produced on x86. I think it is because x86 supports
> hardware breakpoint. If make gdbserver use software breakpoint on x86, this
> issue can be produced.

I think you mean hardware single stepping, not hardware breakpoint.  GDB uses
software breakpoints for x86 as well as ARM.  But GDB uses hardware single
stepping for x86, and software single stepping for ARM (meaning it inserts a
breakpoint at the next instruction(s) and resumes when it wants to single
step).

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