$ objdump -S program
program:     file format elf64-x86-64


Disassembly of section .text:

0000000000401000 <_start>:
  401000:       b8 01 00 00 00          mov    $0x1,%eax
  401005:       bf 01 00 00 00          mov    $0x1,%edi
  40100a:       48 be 00 20 40 00 00    movabs $0x402000,%rsi
  401011:       00 00 00
  401014:       ba 0d 00 00 00          mov    $0xd,%edx
  401019:       0f 05                   syscall
  40101b:       b8 3c 00 00 00          mov    $0x3c,%eax
  401020:       bf 00 00 00 00          mov    $0x0,%edi
  401025:       0f 05                   syscall