Replace Keil/ARM tools

Randy Yates <yates@digitalsignallabs.com> writes:
> Actually, let me ask a very naive question: Can one even use a
> debugger with a largish process/OS like the AM335x/linux? I
> mean, what happens if you break in some time-critical portion
> of the linux kernel? 

You mean to debug the kernel?  Or a user-level application?  You can use
gdb at user level and that's usually enough.  I don't know about
debugging kernels on those boards though.

On 2014-05-19, Randy Yates <yates@digitalsignallabs.com> wrote:
> Actually, let me ask a very naive question: Can one even use a
> debugger with a largish process/OS like the AM335x/linux?

I can't imagine how it would be useful for application development.
For that, you run gdb-server on the target and then the gdb front-end
on a desktop/laptop.  [Actually, I generally do most of my debugging
by running the application on a desktop before I try to run the app on
target hardware.]

A JTAG debugger might be useful for debugging initialization and
startup code.  It's certainly useful for troubleshooting and testing
hardware.

> I mean, what happens if you break in some time-critical portion of
> the linux kernel? 

Good question.

In theory it _might_ be useful for kernel debugging, but Linux has
other facilities for that.

-- 
Grant Edwards               grant.b.edwards        Yow! I'm having a BIG BANG
                                  at               THEORY!!
                              gmail.com            

On 19.5.14 17:17, Grant Edwards wrote:

>> I mean, what happens if you break in some time-critical portion of
>> the linux kernel?
>
> Good question.
>
> In theory it _might_ be useful for kernel debugging, but Linux has
> other facilities for that.
>

There is a special version of GDB, kgdb for kernel debugging.

-- 

Tauno Voipio

Randy Yates wrote:
> Actually, let me ask a very naive question: Can one even use a
> debugger with a largish process/OS like the AM335x/linux? I
> mean, what happens if you break in some time-critical portion
> of the linux kernel?
>
> --RY
>


Assuming it's even possible... seems like it might be...
http://www.linux.com/learn/linux-training/33991-the-kernel-newbie-corner-kernel-and-module-debugging-with-gdb

I find Eclipse/GDB tedious and don't use them. This way,
all my debug cruft is available should i need it at a site.

I'd rather pull the code out and run it in a test harness
on a workstation for unit test, then put the code into a driver
module. Yeah, I'll spend some time making test vectors
and updating them from inferred or logged operation of the driver.

> Randy Yates <yates@digitalsignallabs.com> writes:
>
>> Mike Perkins <spam@spam.com> writes:
>>> [...]
>>> Coupled with Eclipse, OpenOCD (though reverted back to 0.6.0 due to
>>> bugs) I feel I have a pleasant and effective IDE.
>>
>> I get very confused on which JTAGs/debugger interfaces OpenOCD will work
>> with. E.g., how about the following (some of my immediate work and/or
>> possibilities):
>>
>>    1. TI Tiva tm4c1294ncpdt
>>
>>    2. Freescale Coldfire MCF52235
>>
>>    3. Freescale Ketis K6x
>>
>>    4. TI Sitara AM335x
>>
>> ???
>

--
Les Cargill