=> 0x7f1fc954d445 : cmp $0xfffffffffffff000,%rax 0x7f1fc954d44b : ja 0x7f1fc954d45f 0x7f1fc954d44d : repz retq 0x7f1fc954d44f : nop 0x7f1fc954d450 : test %eax,%eax 0x7f1fc954d452 : jg 0x7f1fc954d435 0x7f1fc954d454 : test $0x7fffffff,%eax 0x7f1fc954d459 : je 0x7f1fc954d470 0x7f1fc954d45b : neg %eax 0x7f1fc954d45d : jmp 0x7f1fc954d435 0x7f1fc954d45f : mov 0x37f9ba(%rip),%rdx # 0x7f1fc98cce20 0x7f1fc954d466 : neg %eax 0x7f1fc954d468 : mov %eax,%fs:(%rdx) 0x7f1fc954d46b : or $0xffffffffffffffff,%rax 0x7f1fc954d46f : retq 0x7f1fc954d470 : mov %esi,%eax