Can't disassemble my device driver

Can't disassemble my device driver

[Tom Stefanski]

I have a adatron bdi 2000 connected to my target board and have
successfully load the linux kernel and set breakpoint in schedule
However when I load my device driver, it's text section is a 0xD11D6060
and the kernel is a 0xC00xxxxx. When is disassemble any routine in my
driver, I get all zeros.

 I have MMU xlate set in the config file and I program the mmu correctly
since I can break a schedule. Any help would be apprecciated


 Tom


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Re: Can't disassemble my device driver

[Wolfgang Denk]

Hi Tom,

in message <3D76870E.5244CED5@seranoa.com> you wrote:
>
> I have a adatron bdi 2000 connected to my target board and have
> successfully load the linux kernel and set breakpoint in schedule
> However when I load my device driver, it's text section is a 0xD11D6060
> and the kernel is a 0xC00xxxxx. When is disassemble any routine in my
> driver, I get all zeros.

See the hints (and utility scripts) in  section  "8.2.2.  Dynamically
Loaded   Device   Drivers   (Modules)"   of   our   documentation  at
http://www.denx.de/doc/TQM8xxL/debugging.html

>  I have MMU xlate set in the config file and I program the mmu correctly
> since I can break a schedule. Any help would be apprecciated

You also have to use PTBASE in combination with a kernel that updates
these pointers. See the BDI2000 documentation.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
In theory, there is no difference between  theory  and  practice.  In
practice, however, there is.

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Re: Can't disassemble my device driver

[Neil Horman]

Tom Stefanski wrote:

> I have a adatron bdi 2000 connected to my target board and have
> successfully load the linux kernel and set breakpoint in schedule
> However when I load my device driver, it's text section is a 0xD11D6060
> and the kernel is a 0xC00xxxxx. When is disassemble any routine in my
> driver, I get all zeros.
>
>  I have MMU xlate set in the config file and I program the mmu correctly
> since I can break a schedule. Any help would be apprecciated
>
>
>  Tom
>
>
>

Did you remember to specify the text address when you added the symbol file in
gdb?  If you didn't type 'help add-symbol-file' in gdb and it will explain where
you can specify the starting text address of your device driver module.
Neil
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