[uml-devel] doubt in debugging.

[uml-devel] doubt in debugging.

[rajasekhar.pulluru]

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Hi Guys,
    
Am a newbie to linux and UML.I have installed UML(mandrake) in my linux
system. And I started UML from my host linux system using the command:
 
    ./linux ubd0=root_fs eth0=tuntap,,,10.145.93.183 debug
 
I get the gdb xterm and another one for uml.
 
I have written a basic character ram disk driver( which writes n read
one byte of ram).This .c is in  /root/raj/chardev/ directory in uml and
I stored it as chardriver.c and compiled it with proper kernel flags to
get chardriver.o
 
This chardriver.o is in uml now.
Then I insmoded it and it got loaded.
 
When I typed print *module_list in gdb, it said chardriver is loaded.
then i typed:
printf "0x%08x", (int)module_list + module_list->size_of_struct
it gave me 0xa307b060
but when i asked gdb to add the symbols by:
add-symbol-file /root/raj/chardev/chardriver.o 0xa307b060
 
adding symbol tabel from file "chardriver.o" at .text_addr = 0xa307b060
(y or n)  yes
to which it replied  
chardriver.o: No such file or directory
 
 
how to proceed ? kindly help me out.
 
Regards,
Raj
 
 

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Re: [uml-devel] doubt in debugging.

[Blaisorblade]

On mercoledì 23 maggio 2007, rajasekhar.pulluru@wipro.com wrote:
> Hi Guys,
>
> Am a newbie to linux and UML.I have installed UML(mandrake) in my linux
> system. And I started UML from my host linux system using the command:
>
>     ./linux ubd0=root_fs eth0=tuntap,,,10.145.93.183 debug
>
> I get the gdb xterm and another one for uml.
>
> I have written a basic character ram disk driver( which writes n read
> one byte of ram).This .c is in  /root/raj/chardev/ directory

> in uml 
You see? It's only in UML.
> and  
> I stored it as chardriver.c and compiled it with proper kernel flags to
> get chardriver.o
>
> This chardriver.o is in uml now.
> Then I insmoded it and it got loaded.
>
> When I typed print *module_list in gdb, it said chardriver is loaded.
> then i typed:
> printf "0x%08x", (int)module_list + module_list->size_of_struct
> it gave me 0xa307b060
> but when i asked gdb to add the symbols by:
> add-symbol-file /root/raj/chardev/chardriver.o 0xa307b060

> adding symbol tabel from file "chardriver.o" at .text_addr = 0xa307b060
> (y or n)  yes
> to which it replied
> chardriver.o: No such file or directory
> how to proceed ? kindly help me out.

Your problem seems just that gdb does not find the file chardriver.o, which is 
probably inside the guest (you say that in the mail). Gdb has no special 
access to files inside the VM.

Btw, since you have a .o module I assume you are _STILL_ using a 2.4 UML 
kernel, right?
-- 
Inform me of my mistakes, so I can add them to my list!
Paolo Giarrusso, aka Blaisorblade
http://www.user-mode-linux.org/~blaisorblade

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[uml-devel] doubt in debugging.

[battipatisainagendra Bhavaniprasad]

Hi,
      Does Suse linux consist of skas patch bult in???

rgds,
Prasad

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Re: [uml-devel] doubt in debugging.

[Antoine Martin]

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battipatisainagendra Bhavaniprasad wrote:
> Hi,
>       Does Suse linux consist of skas patch bult in???
No, I am not aware of any vendor kernels that contain the skas patch.

Antoine

> 
> rgds,
> Prasad
> 
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Re: [uml-devel] doubt in debugging.

[rajasekhar.pulluru]

Hi,
Thanks for your response. The actual problem is I dint compile the
module with -g option, that is wy it could nt load the symbols. Its
solved now. 
Thanks guyz. 

-----Original Message-----
From: Antoine Martin [mailto:antoine@nagafix.co.uk] 
Sent: Thursday, May 24, 2007 4:40 PM
To: battipatisainagendra Bhavaniprasad
Cc: Blaisorblade; jdike@karaya.com; Rajasekhar Pulluru (WT01 -
Computing, Storage & Software Products);
user-mode-linux-user@lists.sourceforge.net;
user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] doubt in debugging.

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Hash: SHA512

battipatisainagendra Bhavaniprasad wrote:
> Hi,
>       Does Suse linux consist of skas patch bult in???
No, I am not aware of any vendor kernels that contain the skas patch.

Antoine

> 
> rgds,
> Prasad
> 
> ----------------------------------------------------------------------
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