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Date: Thu, 05 May 2011 10:28:00 -0000
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From: Eli Zaretskii <eliz@gnu.org>
To: Pedro Alves <pedro@codesourcery.com>
CC: bauerman@br.ibm.com, gdb-patches@sourceware.org,	uweigand@de.ibm.com
In-reply-to: <201105050915.18716.pedro@codesourcery.com> (message from Pedro	Alves on Thu, 5 May 2011 09:15:18 +0100)
Subject: Re: [RFA 2/3] Demote to sw watchpoint only in update_watchpoint
Reply-to: Eli Zaretskii <eliz@gnu.org>
References: <201104291726.p3THQVaC029608@d06av02.portsmouth.uk.ibm.com> <83d3jz4110.fsf@gnu.org> <1304547648.19357.230.camel@hactar> <201105050915.18716.pedro@codesourcery.com>
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> From: Pedro Alves <pedro@codesourcery.com>
> Date: Thu, 5 May 2011 09:15:18 +0100
> Cc: Eli Zaretskii <eliz@gnu.org>,
>  gdb-patches@sourceware.org,
>  uweigand@de.ibm.com
> 
> On Wednesday 04 May 2011 23:20:48, Thiago Jung Bauermann wrote:
> > Pedro's suggestion:
> > 
> > 1. The inferior is stopped and software bp_locations (both breakpoints 
> >    and watchpoints) are removed. Hardware ones stay in place.
> > 2. The user asks for a new watchpoint.
> > 3. GDB evaluates the expression and creates the bp_locations.
> > 4. GDB tries to insert the bp_locations as hw watches. If that fails, 
> >    then converts to sw and registers the watchpoint for insertion.
> > 5. The user asks the inferior to be continued.
> > 6. GDB inserts sw breakpoints and watchpoints and resumes the inferior.
> 
> Either that or try keep hardware breakpoints and watchpoints uninserted,
> and insert them just before 4.

If you really meant "before 4", then I must say I don't understand
what are the 2 alternative suggestions.