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# objdump(1)
```markdown
objdump [opts] <elf>
-M intel use intil syntax
-d disassemble text section
-D disassemble all sections
-S mix disassembly with source code
-C demangle
-j <section> display info for section
--[no-]show-raw-insn [dont] show object code next to disassembly
```
## Disassemble section
For example `.plt` section:
```markdown
objdump -j .plt -d <elf>
```
## Example: disassemble raw binary
This can be helpful for example as a cheap analysis tool when toying with JIT
generating code. We could just write thee binary code buffer to a file and
disassemble with `objdump`.
To re-create that case, we just assemble and link some ELF file and then create
a raw binary of the text section with `objcopy`.
```x86asm
# file: test.s
.section .text, "ax"
.global _start
_start:
xor %rax, %rax
mov $0x8, %rax
1:
cmp $0, %rax
je 2f
dec %rax
jmp 1b
2:
# x86-64 exit(2) syscall
mov $0, %rdi
mov $60, %rax
syscall
```
```bash
# Assemble & link.
as -o test.o test.s
ld -o test test.o testc.o
# ELF -> binary (only take .text section).
objcopy -O binary --only-section .text test test-bin
# Disassemble raw binary.
objdump -D -b binary -m i386:x86-64 test-bin
```
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