=> 0x7f3768ecc445 : cmp $0xfffffffffffff000,%rax 0x7f3768ecc44b : ja 0x7f3768ecc45f 0x7f3768ecc44d : repz retq 0x7f3768ecc44f : nop 0x7f3768ecc450 : test %eax,%eax 0x7f3768ecc452 : jg 0x7f3768ecc435 0x7f3768ecc454 : test $0x7fffffff,%eax 0x7f3768ecc459 : je 0x7f3768ecc470 0x7f3768ecc45b : neg %eax 0x7f3768ecc45d : jmp 0x7f3768ecc435 0x7f3768ecc45f : mov 0x37d9ba(%rip),%rdx # 0x7f3769249e20 0x7f3768ecc466 : neg %eax 0x7f3768ecc468 : mov %eax,%fs:(%rdx) 0x7f3768ecc46b : or $0xffffffffffffffff,%rax 0x7f3768ecc46f : retq 0x7f3768ecc470 : mov %esi,%eax