#objdump: -dw #name: x86-64 long insns .*: +file format .* Disassembly of section .text: 0+ : [ ]*[a-f0-9]+: f2 f0 f0 f0 f2 f2 f2 f2 f2 f2 f0 f0 f3 0f 10 repnz lock lock lock repnz repnz repnz repnz repnz repnz lock lock \(bad\) [ ]*[a-f0-9]+: 00 f2 add %dh,%dl [ ]*[a-f0-9]+: f0 f0 f0 f2 f2 f2 f2 f0 f0 f0 f0 f3 0f 10 00 lock lock lock repnz repnz repnz repnz lock lock lock lock movss \(%rax\),%xmm0 #pass