Re: [Ltib] Re: GDB with a JTAG

[Stuart Hughes]

Hi Charles,

You have to re-build your kernel after configuring it for debugging
(which adds -g to the CFLAGS).  I've not tried this lately, but that
used to be the case.


Regards, Stuart

Charles Krinke wrote:
> Morning.
> 
> In working through getting a BDI-2000 to step through the linux kernel
> with ddd/gdb, I've gotten to where I can do:
> 
> $ ddd --debugger powerpc-e300c3-linux-gdb vmlinux
> (gdb) target remote bdi:2001
> 
> At this point the source window for head_32.S is loaded by ddd *and* a
> "continue" lets the kernel boot.
> 
> I have changed the source search path from the default to the linux
> kernel source within ltib, but when I try to open source from within
> ddd, I get the choice of only a couple of .S files, that is, head_32.S &
> entry_32.S.
> 
> Can someone offer and idea so I can get to where I can step from the
> first C line in the kernel (or any C line), such as setup_arch()??
> 
> Charles
> 
> On Fri, Aug 6, 2010 at 6:20 PM, Peter Barada <address@hidden
> <mailto:address@hidden>> wrote:
> 
>     On Fri, 2010-08-06 at 16:16 -0700, Charles Krinke wrote:
>>     All right. I compiled gdb and have a valid executable per the
>>     application note, but, ... when I connect to the BDI with "target
>>     remote bdi:2001", I get a connection refused or a timeout.
> 
>     IIRC, try "target remote bdi:3001", assuming "bdi" maps to the IP
>     address of your BDI...
> 
> 
>>     Would anyone have a suggestion at this point?
>>
>>     Charles
>>
>>     On Fri, Aug 6, 2010 at 3:51 PM, Charles Krinke
>>     <address@hidden <mailto:address@hidden>> wrote:
>>
>>         I am convinced there is some law of the universe that declares
>>         "after krinke embarrasses himself in public, he will be
>>         allowed to see the answer". So, after a little research, it
>>         appears the answer is:
>>
>>         "Read *http://www.ultsol.com/pdfs/ToolTalk_03-001.pdf *and the
>>         recipe of cross compiling gdb and connecting to a BDI-2000 is
>>         revealed."
>>
>>         <sigh>
>>
>>         Charles 
>>
>>
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> 
> 
> 
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