[Gambas-devel] Debugging gambas-source-code

[Brandon Bergren]

On Mon, 28 Mar 2005, Charlie Reinl wrote:

>>>
>>>
>>> On Sat, 26 Mar 2005, Charlie Reinl wrote:
>>>
>>>> Salut Benoit,
>>>>
>>>> actually I succeted to work with Eclipse 3.0 on the gambas-sourccode.
>
>>>> I made it to an eclipse-project and can build it form there, without
>> any
>>>> change made to the original packet from the shrine.
>>>>
>>>> Today I also succeted to custemize the eclipse - debugger (which use
>> gdb) to
>>>> debug gambas.
>>>>
>>>> But I olny can debug binaries from the project, which are gba, gbc,
> gbi
>>
>> and
>>>> gbx.
>>>>
>>>> Not knowing gdb well, my question is, is it possible to debug
>> components ?
>>>> And if, what have I to do to have access ?
>>>
>>> Yes.
>>>
>>> You need to set your breakpoints AFTER the modules are loaded.
>>>
>>> 1. Disable preloading. (gdb doesn't get along with preloading)
>>
>> Thanks.
>>
>> But I think that gbx -p does that, so I will look if I pass the
>> args in a right way.
>
>
> The arg was set right and the modules are NOT loaded,
> I can debug it in gbx,
> but when gbx has done his job, the thread says 'runnig' but shows no more
>
> loaded part.
>
> Anything to do, to load that, or ???
>
It's a step by step list.

Here's a clarified version, using command line gdb:

$ gdb gbx  <- start gdb from the command line
set args -p <- set program arguments to disable preloading
break TRACE_init <- set our initial breakpoint
run <- execute gbx.
(gdb stops at TRACE_init, and you get a gdb prompt.)
>>>!Here's where you can set your breakpoints!<<<
example: "break CTableView.cpp:45" should break on or near line 45 of file 
CTableView.cpp.
cont <- continue execution from where we entered the debugger.
(gdb now stops at your breakpoints)



>
>
>>
>>> 2. Break after library load.
>>> gdb command "break TRACE_init" should do the trick for gbx.
>>> (TRACE_init() isn't called until after LIBRARY_load_all() in gbx.c, as
>
>>> far as I can tell.)
>>> 3. Set your breakpoints.
>>> 4. "c"ontinue execution.
>>>
>>>
>>>>
>>>> If I set a breakpoint in CTableView.cpp gdb
>>>> say
>>>> 'No source file named CTableView.cpp.
>>>> warning: Unable to find dynamic linker breakpoint function.
>>>> GDB will be unable to debug shared library initializers
>>>> and track explicitly loaded dynamic code.'
>>>>
>>>> Would be nice to have some help, about that.
>>>>
>>>> Send you an SnapShot
>>>>
>>>> Amicalment
>>>> Charlie
>>>>
>>>
>>>
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>>
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>>
>>
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>
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>
>
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