This is the mail archive of the gdb-patches@sources.redhat.com mailing list for the GDB project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [RFA] Fix watchpoints when stepping over a breakpoint


> No.  In my original message I made a comment about shlib_event
>> > breakpoints being a problem.  Other breakpoints would to.  This is all
>> > because of the "watchpoint after instr, breakpoint before" thing - we
>> > would still have to deal with this, or we'd just keep hitting the same
>> > breakpoint over and over if there was a watchpoint on the next
>> > instruction.
> 
>> 
>> Sounds like Andrew was right: the decrement-PC logic is screwed.
> 
> 
> I agree.  It's a rat's nest.

Only two targets use DECR_PC_AFTER_BREAK - m68k and i386.  Core GDB 
contans all all sorts of convoluted logic for what is a target problem :-(

What would it take to replace DECR_PC_AFTER_BREAK with a read_pc() 
function that determines the stop address from the i386 hardware 
registers and other state information?

(The m68k isn't multi-arch so I can fix that one by deleting it :-^)

Andrew


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]