objdump
Page Module:Message box/ambox.css has no content.
 | This article needs additional citations for verification. (April 2025) |
Page Module:Infobox/styles.css has no content.
| objdump | |
|---|---|
| Engine | Page Template:Plainlist/styles.css has no content.Template:EditAtWikidata |
| Operating system | Unix and Unix-like |
| Type | Command |
| License | GNU GPL |
| Website | Script error: No such module "WikidataIB". |
| Repository | Page Template:Plainlist/styles.css has no content.
|
Script error: No such module "Check for conflicting parameters".
objdump is a command-line program for displaying various information about object files on Unix-like operating systems. For instance, it can be used as a disassembler to view an executable in assembly form. It is part of the GNU Binutils for fine-grained control over executables and other binary data. objdump uses the BFD library to read the contents of object files. Similar utilities are Borland TDUMP, Microsoft DUMPBIN and readelf.
On certain platforms (e.g. macOS), the objdump binary may actually be a link to LLVM's objdump, with different command-line options and behavior.[citation needed] otool and nm perform analogous functions for Mach-O files.[1][2]
Example
For example,
$ objdump -D -M intel file.bin
This disassembles the file file.bin, showing its assembly code in Intel syntax.
Example output:
4004ed <main>:
4004ed: 55 push rbp
4004ee: 48 89 e5 mov rbp,rsp
4004f1: c7 45 ec 00 00 00 00 mov DWORD PTR [rbp-0x14],0x0
4004f8: c7 45 f0 01 00 00 00 mov DWORD PTR [rbp-0x10],0x1
4004ff: c7 45 f4 02 00 00 00 mov DWORD PTR [rbp-0xc],0x2
400506: c7 45 f8 03 00 00 00 mov DWORD PTR [rbp-0x8],0x3
40050d: c7 45 fc 04 00 00 00 mov DWORD PTR [rbp-0x4],0x4
400514: c7 45 ec 00 00 00 00 mov DWORD PTR [rbp-0x14],0x0
40051b: eb 13 jmp 400530 <main+0x43>
40051d: 8b 05 15 0b 20 00 mov eax,DWORD PTR [rip+0x200b15] # 601038 <globalA>
400523: 83 e8 01 sub eax,0x1
400526: 89 05 0c 0b 20 00 mov DWORD PTR [rip+0x200b0c],eax # 601038 <globalA>
40052c: 83 45 ec 01 add DWORD PTR [rbp-0x14],0x1
400530: 8b 05 02 0b 20 00 mov eax,DWORD PTR [rip+0x200b02] # 601038 <globalA>
400536: 39 45 ec cmp DWORD PTR [rbp-0x14],eax
400539: 7c e2 jl 40051d <main+0x30>
40053b: 5d pop rbp
40053c: c3 ret
See also
Lua error in mw.title.lua at line 404: bad argument #2 to 'title.new' (unrecognized namespace name 'Portal').
References
Page Template:Reflist/styles.css has no content.
- ^ Page Module:Citation/CS1/styles.css has no content."An Apple Library Primer". Apple Developer Forums.
- ^ Page Module:Citation/CS1/styles.css has no content."llvm-otool - Mach-O dumping tool". LLVM Reference.
External links
- Template:Man
- Template:Man
- Binutils::Objdump - Perl interface to objdump
