Re: new port

[Hui Zhu <teawater@gmail.com>]

http://teawater.googlepages.com/epgdb1.txt
This doc is about porting gdb.  It told something about howto write
frame part.  It is old but maybe can help something.

http://sourceware.org/gdb/current/onlinedocs/gdbint_7.html#SEC45
Gdbint introduce something about frame too.

Thanks,
Hui

On Thu, May 14, 2009 at 22:46, Florent DEFAY <spira.inhabitant@gmail.com> wrote:
> Thank you very much for the tips. You are right.
>
> When I step into the function with stepi:
> (1) If I try 'info frame' just before the first instruction, then
> results an internal error.
> (2) If I try 'info frame' just after the first intsuction, then I get
> frame information.
>
> I set up traces to know which functions GDB crosses in my target-tdep.c.
> I can tell that skip_prologue is called only after processing the
> first instruction,
> I think it should be called before, shouldn't it?
>
> Thank you for the HOWTO, I jump on it.
>
> Regards.
>
> Florent
>
> 2009/5/14 Anthony Berent <Anthony.Berent@arm.com>:
>> Florent,
>>
>> I have also been porting to a new architecture, and recently solved similar
>> problems with next. The way next works is that, after a step, it checks
>> whether an extra frame has been added to the stack. If it has, and various
>> other checks are satisfied, then it places a breakpoint on the return
>> address and runs on. Otherwise it simply stops after the first step.
>>
>> Try stepping into the function using stepi, stopping at its first
>> instruction, and then having a look at the stack frames (using bt and "info
>> frames"). If these look wrong then that is probably your problem.
>>
>> - Anthony
>>
>> -----Original Message-----
>> From: gdb-owner@sourceware.org [mailto:gdb-owner@sourceware.org] On Behalf
>> Of Florent DEFAY
>> Sent: 14 May 2009 14:24
>> To: gdb@sourceware.org
>> Subject: new port
>>
>> Hi,
>>
>> I work on porting GDB to a new arch.
>> I already ported GCC.
>>
>> I meet some problems, I need help.
>>
>> At the moment, I can use most of basic GDB commands.
>>
>> I can set breakpoints and stop on them. I can set breakpoints on function
>> names.
>> I can step. I can read locals and registers.
>>
>> When I use the command 'next', it should step and skip functions. The
>> problem is that
>> indeed it steps but it does not skip functions. It step into the function.
>>
>> Please help.
>>
>>
>> Regards.
>>
>> Florent
>>
>>
>>
>