[SR-Users] SIP Router 3.03 topoh

[dotnetdub]

On 25 November 2010 12:33, marius zbihlei <marius.zbihlei at 1and1.ro> wrote:

>  On 11/25/2010 01:31 PM, dotnetdub wrote:
>
>
>  There are 36 section headers, starting at offset 0x17b34:
>
>  Section Headers:
>   [Nr] Name              Type            Addr     Off    Size   ES Flg Lk
> Inf Al
>   [ 0]                   NULL            00000000 000000 000000 00      0
> 0  0
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> 0  4
>   [ 2] .gnu.hash         GNU_HASH        0000054c 00054c 0002d8 04   A  3
> 0  4
>   [ 3] .dynsym           DYNSYM          00000824 000824 000650 10   A  4
> 1  4
>   [ 4] .dynstr           STRTAB          00000e74 000e74 000581 00   A  0
> 0  1
>   [ 5] .gnu.version      VERSYM          000013f6 0013f6 0000ca 02   A  3
> 0  2
>   [ 6] .gnu.version_r    VERNEED         000014c0 0014c0 000030 00   A  4
> 1  4
>   [ 7] .rel.dyn          REL             000014f0 0014f0 0001d0 08   A  3
> 0  4
>   [ 8] .rel.plt          REL             000016c0 0016c0 000210 08   A  3
>  10  4
>   [ 9] .init             PROGBITS        000018d0 0018d0 000030 00  AX  0
> 0  4
>   [10] .plt              PROGBITS        00001900 001900 000430 04  AX  0
> 0  4
>   [11] .text             PROGBITS        00001d30 001d30 0080d8 00  AX  0
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>   [17] .jcr              PROGBITS        0000c450 00b450 000004 00  WA  0
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>  58  4
>   [35] .strtab           STRTAB          00000000 018ab4 0006ec 00      0
> 0  1
> Key to Flags:
>   W (write), A (alloc), X (execute), M (merge), S (strings)
>   I (info), L (link order), G (group), x (unknown)
>   O (extra OS processing required) o (OS specific), p (processor specific)
>
>
>
>
>> in the gdb console load the topoh.so
>>
>>
>> add-symbol-file /path/to/topoh.so 0xb7004000 + 0x<offset of .text segment
>> found as above>
>>
>>
>  Ok.
>
>   Hello
>
> Did you give gdb the command
> add-symbol-file /path/to/topoh.so 0xb7004000+0x00001d30
>







>
> Gdb should inquire you if you want to lead topoh.so at offset 0xb7005d30
> (press 'y'). Then the IP should not be out of bounds ... it should be mapped
> to the topoh.so text segment. Ah, I have made a mistake, there should be no
> spaces between the address and the offset (as seen above)
>
> Anyway you should get something like this (on my machine - on your use the
> offsets from above)
> (gdb) add-symbol-file modules/topoh/topoh.so 0xb7004000+0x00001d80
> add symbol table from file "modules/topoh/topoh.so" at
>         .text_addr = 0xb7005d80
> (y or n) y
> Reading symbols from
> /home/marius/dev/sip-router/modules/topoh/topoh.so...done.
>
> Then
> (gdb) x/s 0xb70070d9
> !!!!!!!!!!!!!!!!!!0xb70070d9 <th_get_hdr_cookie+25>:       <Address
> 0xb70070d9 out of bounds>!!!!!!!!!!!!!!!!!
>
> The line between all the !!!!!! is the line I care about
>
>
> Also don't forget
> (gdb)info registers
>
> Thank you
> Marius
>

Hi Marius,

I hope this is what your after!

(gdb) add-symbol-file /lib/kamailio/modules/topoh.so 0xb7004000+0x00001d30
add symbol table from file "/lib/kamailio/modules/topoh.so" at
.text_addr = 0xb7005d30
(y or n) y
Reading symbols from /lib/kamailio/modules/topoh.so...done.
(gdb) x/s 0xb70070d9
0xb70070d9 <th_skip_msg+9>: <Address 0xb70070d9 out of bounds>
(gdb) info registers
eax            0xbf916160 -1080991392
ecx            0x0 0
edx            0x2 2
ebx            0xb7010588 -1224669816
esp            0xbf916118 0xbf916118
ebp            0xbf916118 0xbf916118
esi            0xbf916160 -1080991392
edi            0x82500c0 136642752
eip            0xb70070d9 0xb70070d9 <th_skip_msg+9>
eflags         0x10246 [ PF ZF IF RF ]
cs             0x73 115
ss             0x7b 123
ds             0x7b 123
es             0x7b 123
fs             0x0 0
gs             0x33 51


Thanks
Brian
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