=> 0x7f2535c621e0 <sem_post>:	mov    (%rdi),%eax
   0x7f2535c621e2 <sem_post+2>:	cmp    $0x7fffffff,%eax
   0x7f2535c621e7 <sem_post+7>:	je     0x7f2535c6221c <sem_post+60>
   0x7f2535c621e9 <sem_post+9>:	lea    0x1(%rax),%esi
   0x7f2535c621ec <sem_post+12>:	lock cmpxchg %esi,(%rdi)
   0x7f2535c621f0 <sem_post+16>:	jne    0x7f2535c621e2 <sem_post+2>
   0x7f2535c621f2 <sem_post+18>:	cmpq   $0x0,0x8(%rdi)
   0x7f2535c621f7 <sem_post+23>:	je     0x7f2535c62212 <sem_post+50>
   0x7f2535c621f9 <sem_post+25>:	mov    $0xca,%eax
   0x7f2535c621fe <sem_post+30>:	mov    $0x1,%esi
   0x7f2535c62203 <sem_post+35>:	or     0x4(%rdi),%esi
   0x7f2535c62206 <sem_post+38>:	mov    $0x1,%edx
   0x7f2535c6220b <sem_post+43>:	syscall 
   0x7f2535c6220d <sem_post+45>:	test   %rax,%rax
   0x7f2535c62210 <sem_post+48>:	js     0x7f2535c62215 <sem_post+53>
   0x7f2535c62212 <sem_post+50>:	xor    %eax,%eax