About ELF format
From: Vinay (vinaynkaranth_at_yahoo.com)
Date: 05/28/04
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Date: Fri, 28 May 2004 07:07:01 +0000 (UTC)
Hi all
I have a little doubt regarding the ELF file. Here is a Hex snap shot
of an ELF file compiled using GCC on RH linux 9.0 (X86).
00000000h: 7F 45 4C 46 01 01 01 00 00 00 00 00 00 00 00 00
00000010h: 02 00 03 00 01 00 00 00 C0 83 04 08 34 00 00 00
00000020h: 08 4F 00 00 00 00 00 00 34 00 20 00 06 00 28 00
00000030h: 1E 00 1B 00 06 00 00 00 34 00 00 00 34 80 04 08
00000040h: 34 80 04 08 C0 00 00 00 C0 00 00 00 05 00 00 00
>>From the ELF document I understand that at the offset 0x20 0x21
contains the section header table's file offset in bytes.
In the above snap shot it shows, "0x4F08". But the offset "0x4F08", it
looks as though it is not the section table
start address. Here is the snap shot of offset "0x4F08".
00004ee0h: 2E 64 79 6E 61 6D 69 63 00 2E 73 62 73 73 00 2E
00004ef0h: 62 73 73 00 2E 73 74 61 62 00 2E 73 74 61 62 73
00004f00h: 74 72 00 2E 63 6F 6D 6D 65 6E 74 00 2E 6E 6F 74
00004f10h: 65 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00004f20h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00004f30h: 00 00 00 00 00 00 00 00 00 00 00 00 1B 00 00 00
00004f40h: 01 00 00 00 02 00 00 00 F4 80 04 08 F4 00 00 00
00004f50h: 13 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
00004f60h: 00 00 00 00 23 00 00 00 07 00 00 00 02 00 00 00
Can any one please let me know if I have interpreted the ELF header
properly or not. Also if this is not the correct
group for this, please let me know the correct group where I can post
this question.
Thanx a lot.
Vinay
- Previous message: Tim Roberts: "Re: Write arguments on stack to stdout in Linux: How do i count the number of char's in each argument?"
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