Hi Brian,
Brian Luckau wrote:
I have an elf netowrk bootable image for linux that was created with mkelfImage. How can I extract the file to view its contents (which kernel modules were included in the file, etc. )
The image may or may not include initrd, if yes it will quite likely be compressed. What does readelf and/or objdump say about the file?
There's no pre-made tool for taking apart those ELF images. You can of course always peruse the mkelfImage source code to find out all details.
http://www.coreboot.org/Mkelfimage svn co svn://coreboot.org/coreboot/trunk/util/mkelfImage
//Peter
Hi,
I'm not sure if I'm using the correct paramters but here is some of the information you requested.
# objdump -x -s -D Compute.ebi
Compute.ebi: file format elf32-i386 Compute.ebi architecture: i386, flags 0x00000102: EXEC_P, D_PAGED start address 0x00010000
Program Header: NOTE off 0x000000d4 vaddr 0x00000000 paddr 0x00000000 align 2**0 filesz 0x000000a4 memsz 0x000000a4 flags rwx LOAD off 0x00000178 vaddr 0x00010000 paddr 0x00010000 align 2**0 filesz 0x00001288 memsz 0x00005524 flags rwx LOAD off 0x00001400 vaddr 0x00020000 paddr 0x00020000 align 2**0 filesz 0x00000000 memsz 0x00001070 flags rwx LOAD off 0x00001400 vaddr 0x00100000 paddr 0x00100000 align 2**0 filesz 0x0020029c memsz 0x00700000 flags rwx LOAD off 0x0020169c vaddr 0x02800000 paddr 0x02800000 align 2**0 filesz 0x007dbdc6 memsz 0x007dbdc6 flags rwx
Sections: Idx Name Size VMA LMA File off Algn SYMBOL TABLE: no symbols
root@admin cache]# readelf -a Compute.ebi ELF Header: Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, little endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: Intel 80386 Version: 0x1 Entry point address: 0x10000 Start of program headers: 52 (bytes into file) Start of section headers: 0 (bytes into file) Flags: 0x0 Size of this header: 52 (bytes) Size of program headers: 32 (bytes) Number of program headers: 5 Size of section headers: 0 (bytes) Number of section headers: 0 Section header string table index: 0
There are no sections in this file.
There are no sections in this file.
Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align NOTE 0x0000d4 0x00000000 0x00000000 0x000a4 0x000a4 RWE 0 LOAD 0x000178 0x00010000 0x00010000 0x01288 0x05524 RWE 0 LOAD 0x001400 0x00020000 0x00020000 0x00000 0x01070 RWE 0 LOAD 0x001400 0x00100000 0x00100000 0x20029c 0x700000 RWE 0 LOAD 0x20169c 0x02800000 0x02800000 0x7dbdc6 0x7dbdc6 RWE 0
There is no dynamic section in this file.
There are no relocations in this file.
There are no unwind sections in this file.
No version information found in this file. __________________________ From: coreboot-bounces@coreboot.org [coreboot-bounces@coreboot.org] on behalf of Peter Stuge [peter@stuge.se] Sent: Monday, January 09, 2012 2:30 PM To: coreboot@coreboot.org Subject: Re: [coreboot] Extracting an image created with mkelfImage
Hi Brian,
Brian Luckau wrote:
I have an elf netowrk bootable image for linux that was created with mkelfImage. How can I extract the file to view its contents (which kernel modules were included in the file, etc. )
The image may or may not include initrd, if yes it will quite likely be compressed. What does readelf and/or objdump say about the file?
There's no pre-made tool for taking apart those ELF images. You can of course always peruse the mkelfImage source code to find out all details.
http://www.coreboot.org/Mkelfimage svn co svn://coreboot.org/coreboot/trunk/util/mkelfImage
//Peter
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Brian Luckau -
Peter Stuge