Re: [uml-user] gdb on a module?

[Jeff D. <jd...@ka...>]

al...@pr... said:
> Is there any way to tell gdb that the module is now part of the
> kernel? 

I recently figured this out and haven't put it on the web site yet.  What you 
do is insmod (or modprobe) the module.  Then, in gdb look at module_list (and 
go down ->next) until you find the entry for your new module.  It will 
probably be the first entry.

Find the module start by adding the address of that entry, 
sizeof(*module_list), and 8.  Those last two add up to 0x50 (IIRC), and the 
module entry will be on a page boundary, so the actual module start address 
will be 0xzzzzz060 in that case.

In gdb, 'add-symbol-file /path/to/module/on/host <module start address>'

Then everything will work normally.

When you unload it and load in another version, you have to
	symbol-file
which will unload everything, including the main binary, then
	symbol-file /path/to/kernel
	add-symbol-file as above

				Jeff