patch to eliminate ADDR on loading symbols of Linux module

[Caz Yokoyama <cazyokoyama at gmail dot com>]

Hello,
When we debug a loadable module of Linux kernel, we use the command,
add-symbol-file to read its symbols. We have to specify its loaded address
like
(gdb) add-symbol-file drivers/net/e1000e/e1000e.ko 0xfffffffffa008000
The address is appeared in /proc/modules. Someone said several months ago
that the address is taken by python script. But I don't know how. Therefore,
I did by my way.
When we develop kernel module, we are interested in several module at most
which we are developing. We don't care the symbols of nfs for example.
Therefore, extending add-symbol-file may be a best way. So the syntax of
add-symbol-file is
Usage: add-symbol-file FILE [ADDR [-s <SECT> <SECT_ADDR> -s <SECT>
<SECT_ADDR> ...] ]
I.e. ADDR becomes optional.
In add_symbol_file(), it checks to see there is only one parameter, FILE.
Then searching the module in the linked list of kernel modules and getting
loaded address. Construct new string which has FILE and ADDR and pass to
original add_symbol_file(). It assumes the modification of
http://sourceware.org/ml/gdb-patches/2009-08/msg00115.html

Thank you.
-Caz Yokoyama, caz at caztech dot com. 503-804-1028(m).

Attachment: LinuxModuleSymbolLoad.patch
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