Makefile changes for symbols

Can someone give me the Makefile changes to make a LinuxBIOS with
symbols?  I tried adding "-gdwarf-2" to CFLAGS, but I'm not sure where
the unstripped output would be.

Are there any features in the code that are useful in debugging
LinuxBIOS?
Any defines that should change as well?

Someone must have some experience with source code level debugging of
LinuxBIOS with an American Arium ECM-50.  Thanks.

Steve Kimball
Benchmark Electronics
Hudson, NH

[Ronald G. Minnich]

On Tue, 19 Oct 2004 [e-mail] wrote:
> Someone must have some experience with source code level debugging of
> LinuxBIOS with an American Arium ECM-50.  Thanks.

wow! I want to hear about that when you get it going. Another FAQ entry.

ron

 writes:
> Can someone give me the Makefile changes to make a LinuxBIOS with
> symbols?  I tried adding "-gdwarf-2" to CFLAGS, but I'm not sure where
> the unstripped output would be.
>
> Are there any features in the code that are useful in debugging
> LinuxBIOS?
> Any defines that should change as well?

Hmm. The ring buffer console might be useful.
> Someone must have some experience with source code level debugging of
> LinuxBIOS with an American Arium ECM-50.  Thanks.

Alternatively it might be work adding gdb stubs into LinuxBIOS.  And doing
using a remote debugger that way.  What a jtag interface provides
is really not much more than what gdb stubs provides.  At least
not after memory is initialized.

Eric

[Ronald G. Minnich]

On Fri, 22 Oct 2004, Eric W. Biederman wrote:
> Alternatively it might be work adding gdb stubs into LinuxBIOS.  And doing
> using a remote debugger that way.  What a jtag interface provides
> is really not much more than what gdb stubs provides.  At least
> not after memory is initialized.

that's not quite correct. There are a host of cpu failures you can detect 
with a jtag interface that gdb stubs are useless for. GDB stubs requires 
that the processor be basically sane, jtag interfaces are not near as 
picky.

ron