=> 0x7f5742c6b445 : cmp $0xfffffffffffff000,%rax 0x7f5742c6b44b : ja 0x7f5742c6b45f 0x7f5742c6b44d : repz retq 0x7f5742c6b44f : nop 0x7f5742c6b450 : test %eax,%eax 0x7f5742c6b452 : jg 0x7f5742c6b435 0x7f5742c6b454 : test $0x7fffffff,%eax 0x7f5742c6b459 : je 0x7f5742c6b470 0x7f5742c6b45b : neg %eax 0x7f5742c6b45d : jmp 0x7f5742c6b435 0x7f5742c6b45f : mov 0x37f9ba(%rip),%rdx # 0x7f5742feae20 0x7f5742c6b466 : neg %eax 0x7f5742c6b468 : mov %eax,%fs:(%rdx) 0x7f5742c6b46b : or $0xffffffffffffffff,%rax 0x7f5742c6b46f : retq 0x7f5742c6b470 : mov %esi,%eax