[lucid] Where is debuginfo package?

[Peter M. Petrakis]

On 02/17/2011 02:53 AM, Tetsuo Handa wrote:
> Tim Gardner wrote:
>> http://ddebs.ubuntu.com/pool/main/l/linux/
> 
> Thanks.
> 
> I installed linux-image-2.6.32-28-generic-pae-dbgsym_2.6.32-28.55_i386.ddeb
> and ran
> 
>   objdump -S /usr/lib/debug/boot/vmlinux-2.6.32-28-generic-pae
> 
> but I couldn't get disassembly with source code mixed.
> Thus, I manually ran
> 

The debug kernel expects the source code to exist in
/build/buildd/linux-2.6.32, just create the proper
symlinks and try again.


>   cp /boot/config-2.6.32-28-generic-pae .config
>   make fs/jbd/
>   make fs/jbd2/
>   objdump -S fs/jbd/transaction.o > 1.txt
>   objdump -S fs/jbd2/transaction.o > 2.txt
> 
> and guessed which start_this_handle() was called from the size of function.
> 

If you ran a  disassembly  with line numbers (-ld) it would have been
a little easier, source code is not necessary for this. I largely avoid
creating an interspersed obj dump, it just takes too long. Adding line
numbers takes only a few more minutes.

[This is *not* the kernel version you're referring too]

ffffffff81211b70 <start_this_handle>:
start_this_handle():
/build/buildd/linux-2.6.32/fs/jbd/transaction.c:85
ffffffff81211b70:       55                      push   %rbp
ffffffff81211b71:       48 89 e5                mov    %rsp,%rbp
ffffffff81211b74:       41 57                   push   %r15
ffffffff81211b76:       41 56                   push   %r14
ffffffff81211b78:       41 55                   push   %r13
ffffffff81211b7a:       41 54                   push   %r12
ffffffff81211b7c:       53                      push   %rbx
ffffffff81211b7d:       48 83 ec 78             sub    $0x78,%rsp
ffffffff81211b81:       e8 fa 02 e0 ff          callq  ffffffff81011e80 <mcount>
ffffffff81211b86:       48 89 b5 78 ff ff ff    mov    %rsi,-0x88(%rbp)
/build/buildd/linux-2.6.32/fs/jbd/transaction.c:88
ffffffff81211b8d:       44 8b 76 08             mov    0x8(%rsi),%r14d
/build/buildd/linux-2.6.32/fs/jbd/transaction.c:85
ffffffff81211b91:       49 89 fc                mov    %rdi,%r12
/build/buildd/linux-2.6.32/fs/jbd/transaction.c:92
ffffffff81211b94:       8b 8f 80 01 00 00       mov    0x180(%rdi),%ecx
ffffffff81211b9a:       41 39 ce                cmp    %ecx,%r14d
ffffffff81211b9d:       0f 8f 7f 03 00 00       jg     ffffffff81211f22 <start_this_handle+0x3b2>


BTW, if you tack on a .S suffix, you'll get proper C+ASM syntax highlighting.
Hope that helps.

Peter