=> 0x7f2e87fddd05 : cmp $0xfffffffffffff000,%rax 0x7f2e87fddd0b : ja 0x7f2e87fddd1f 0x7f2e87fddd0d : repz retq 0x7f2e87fddd0f : nop 0x7f2e87fddd10 : test %eax,%eax 0x7f2e87fddd12 : jg 0x7f2e87fddcf5 0x7f2e87fddd14 : test $0x7fffffff,%eax 0x7f2e87fddd19 : je 0x7f2e87fddd30 0x7f2e87fddd1b : neg %eax 0x7f2e87fddd1d : jmp 0x7f2e87fddcf5 0x7f2e87fddd1f : mov 0x35927a(%rip),%rdx # 0x7f2e88336fa0 0x7f2e87fddd26 : neg %eax 0x7f2e87fddd28 : mov %eax,%fs:(%rdx) 0x7f2e87fddd2b : or $0xffffffffffffffff,%rax 0x7f2e87fddd2f : retq 0x7f2e87fddd30 : mov %esi,%eax