On 25 November 2010 12:33, marius zbihlei <marius.zbih...@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 > [ 1] .hash HASH 000000b4 0000b4 000498 04 A 3 > 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 > 0 16 > [12] .fini PROGBITS 00009e08 009e08 00001c 00 AX 0 > 0 4 > [13] .rodata PROGBITS 00009e24 009e24 001618 01 AMS 0 > 0 4 > [14] .eh_frame PROGBITS 0000b43c 00b43c 000004 00 A 0 > 0 4 > [15] .ctors PROGBITS 0000c440 00b440 000008 00 WA 0 > 0 4 > [16] .dtors PROGBITS 0000c448 00b448 000008 00 WA 0 > 0 4 > [17] .jcr PROGBITS 0000c450 00b450 000004 00 WA 0 > 0 4 > [18] .dynamic DYNAMIC 0000c454 00b454 0000c8 08 WA 4 > 0 4 > [19] .got PROGBITS 0000c51c 00b51c 00006c 04 WA 0 > 0 4 > [20] .got.plt PROGBITS 0000c588 00b588 000114 04 WA 0 > 0 4 > [21] .data PROGBITS 0000c6a0 00b6a0 00012c 00 WA 0 > 0 32 > [22] .bss NOBITS 0000c7e0 00b7cc 0004a0 00 WA 0 > 0 32 > [23] .comment PROGBITS 00000000 00b7cc 0000d9 00 0 > 0 1 > [24] .debug_aranges PROGBITS 00000000 00b8a8 0000b0 00 0 > 0 8 > [25] .debug_pubnames PROGBITS 00000000 00b958 000448 00 0 > 0 1 > [26] .debug_info PROGBITS 00000000 00bda0 005dd1 00 0 > 0 1 > [27] .debug_abbrev PROGBITS 00000000 011b71 0007a8 00 0 > 0 1 > [28] .debug_line PROGBITS 00000000 012319 0014b9 00 0 > 0 1 > [29] .debug_frame PROGBITS 00000000 0137d4 0004b0 00 0 > 0 4 > [30] .debug_str PROGBITS 00000000 013c84 001d76 01 MS 0 > 0 1 > [31] .debug_loc PROGBITS 00000000 0159fa 001ebe 00 0 > 0 1 > [32] .debug_ranges PROGBITS 00000000 0178b8 000140 00 0 > 0 8 > [33] .shstrtab STRTAB 00000000 0179f8 00013b 00 0 > 0 1 > [34] .symtab SYMTAB 00000000 0180d4 0009e0 10 35 > 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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