=> 0x7fa088093037 : cmp $0xfffffffffffff000,%rax 0x7fa08809303d : ja 0x7fa08809305d 0x7fa08809303f : repz retq 0x7fa088093041 : nopl 0x0(%rax) 0x7fa088093048 : test %ecx,%ecx 0x7fa08809304a : jg 0x7fa088093027 0x7fa08809304c : mov %ecx,%eax 0x7fa08809304e : neg %eax 0x7fa088093050 : and $0x7fffffff,%ecx 0x7fa088093056 : mov %esi,%ecx 0x7fa088093058 : cmovne %eax,%ecx 0x7fa08809305b : jmp 0x7fa088093027 0x7fa08809305d : mov 0x389ddc(%rip),%rdx # 0x7fa08841ce40 0x7fa088093064 : neg %eax 0x7fa088093066 : mov %eax,%fs:(%rdx) 0x7fa088093069 : or $0xffffffffffffffff,%rax