sem_destroy()

linux.s

00000000000106d0 <sem_destroy@@GLIBC_2.2.5>:
   106d0:       31 c0                   xor    %eax,%eax
   106d2:       c3                      retq   

openbsd.s

0000000000005870 <sem_destroy>:
    5870:       4c 8b 1d c1 4d 00 00    mov    19905(%rip),%r11        # a638 <__retguard_2855>
    5877:       4c 33 1c 24             xor    (%rsp),%r11
    587b:       55                      push   %rbp
    587c:       48 89 e5                mov    %rsp,%rbp
    587f:       41 53                   push   %r11
    5881:       41 56                   push   %r14
    5883:       49 89 fe                mov    %rdi,%r14
    5886:       83 3d ef 64 00 00 00    cmpl   $0x0,25839(%rip)        # bd7c <_threads_ready>
    588d:       74 07                   je     5896 <sem_destroy+0x26>
    588f:       4d 85 f6                test   %r14,%r14
    5892:       75 0c                   jne    58a0 <sem_destroy+0x30>
    5894:       eb 3b                   jmp    58d1 <sem_destroy+0x61>
    5896:       e8 a5 10 00 00          callq  6940 <_rthread_init>
    589b:       4d 85 f6                test   %r14,%r14
    589e:       74 31                   je     58d1 <sem_destroy+0x61>
    58a0:       49 8b 3e                mov    (%r14),%rdi
    58a3:       48 85 ff                test   %rdi,%rdi
    58a6:       74 29                   je     58d1 <sem_destroy+0x61>
    58a8:       83 7f 04 00             cmpl   $0x0,0x4(%rdi)
    58ac:       74 52                   je     5900 <sem_destroy+0x90>
    58ae:       48 8d 35 cf d4 ff ff    lea    -11057(%rip),%rsi        # 2d84 <atexit-0x24cc>
    58b5:       ba 27 00 00 00          mov    $0x27,%edx
    58ba:       bf 02 00 00 00          mov    $0x2,%edi
    58bf:       e8 dc 36 00 00          callq  8fa0 <unlink@plt>
    58c4:       e8 57 36 00 00          callq  8f20 <snprintf@plt>
    58c9:       c7 00 10 00 00 00       movl   $0x10,(%rax)
    58cf:       eb 0b                   jmp    58dc <sem_destroy+0x6c>
    58d1:       e8 4a 36 00 00          callq  8f20 <snprintf@plt>
    58d6:       c7 00 16 00 00 00       movl   $0x16,(%rax)
    58dc:       b8 ff ff ff ff          mov    $0xffffffff,%eax
    58e1:       41 5e                   pop    %r14
    58e3:       41 5b                   pop    %r11
    58e5:       5d                      pop    %rbp
    58e6:       4c 33 1c 24             xor    (%rsp),%r11
    58ea:       4c 3b 1d 47 4d 00 00    cmp    19783(%rip),%r11        # a638 <__retguard_2855>
...