swap.o: file format elf64-x86-64 Disassembly of section .text: 0000000000000000 : 0: 8b 17 mov (%rdi),%edx 2: 8b 06 mov (%rsi),%eax 4: 89 07 mov %eax,(%rdi) 6: 89 16 mov %edx,(%rsi) 8: c3 retq