GDB macros

[Joel Sherrill]

Luca Germano wrote:
> Hi, thanks for your help.
> I'm using the GDB macros version of the rtems wiki. I'm using RTEMS on 
> Leon3 CPU.
> I find the problems.
> When a macro refers to an RTEMS global variables is necessary to cast 
> the variables to the primitive type of the variable to be able to 
> access its fields. Doing the cast the macros work fine. For examples 
> in the rtems_classic_tasks macros I can't use directly 
> _RTEMS_tasks_Information but I must do
> set $prova = (Objects_Information)_RTEMS_tasks_Information
> rtems_helper_show_task $prova $arg0
> instead of
> rtems_helper_show_task _RTEMS_tasks_Information $arg0
> In some macro there are some pointer conversion cast for example
> (Thread_Control_struct *)
> Also this instraction doesn't work. I must use
> (Thread_Control *)
> Now I must correct all the macros.
Thanks. Please update the source code in the Wiki.

And if you have any ideas for other helper macros or tweaks to existing 
functions,
please speak up. These macros have grown more out of user need than anything
else.

> The ultimate thing to set is the macro rtems_task_backtrack that is HW 
> dependent. Someone know the field of the structure Register of the 
> RTEMS context switch to use for Leon3?
>

For every architecture, this is the structure Context_Control defined in
cpukit/score/CPUNAME/rtems/score/cpu.h.

For SPARC, I think you want to try either i6_fp or o6_sp. One of those
should work.
> Best Regards
> Luca Germano
>
>> From: Paul Whitfield <paulw at omnitronics.com.au>
>> To: Luca Germano <lucagermano at hotmail.com>
>> CC: leonp at plris.com, rtems-users at rtems.com
>> Subject: Re: GDB macros
>> Date: Wed, 13 Sep 2006 08:54:54 +0800
>>
>> Luca Germano wrote:
>>> I put a breakpoint in the program. After program execution stop on 
>>> the breakpoint I execute the macro.
>>>
>>> Luca
>>>
>>>
>>>> From: leonp at plris.com
>>>> To: rtems-users at rtems.com
>>>> Subject: Re: GDB macros
>>>> Date: Tue, 12 Sep 2006 11:41:08 +0300
>>>>
>>>> On Tuesday, 12 בSeptember 2006 11:37, Luca Germano wrote:
>>>> > Thanks for the help.
>>>> > I try to use the rtems_classic_tasks macro but gdb give me the 
>>>> following
>>>> > reply
>>>> >
>>>> > 
>>>> =====================================================================
>>>> > Attempt to extract a component of a value that is not a structure.
>>>> > # | Name | ID | Pri | Ticks | State
>>>> > 
>>>> ---+------+----------+-----+----------+------------------------------
>>>> >
>>>> > How can I solve this problem?
>>>> Is the program running? I mean have you stopped it in the middle of 
>>>> the
>>>> execution and them executed the macro?
>>>>
>>
>> Hi Luca,
>>
>> Which version of the Macros are you using?
>> Make sure you are using the latest ones from the rtems wiki.
>>
>> Also I have found in the past you need to use the command line
>> version of gdb to debug the macros, if you use a GUI/IDE interface
>> such as insight or emacs it hides error messages from you which
>> makes it difficult to debug the problem(s).
>>
>> Regards
>>
>> Paul
>>
>>
>>
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>
>