0000000000005710 <l2cap_rtx>:
    5710:	push   %rbp
    5711:	mov    %rsp,%rbp
    5714:	push   %rbx
    5715:	sub    $0x8,%rsp
    5719:	mov    0x8(%rdi),%rbx
    571d:	callq  5722 <l2cap_rtx+0x12>
    5722:	test   %rbx,%rbx
    5725:	je     572e <l2cap_rtx+0x1e>
    5727:	cmpw   $0x0,0x8(%rbx)
    572c:	jne    5735 <l2cap_rtx+0x25>
    572e:	add    $0x8,%rsp
    5732:	pop    %rbx
    5733:	pop    %rbp
    5734:	retq   
    5735:	add    $0x8,%rsp
    5739:	mov    %rbx,%rdi
    573c:	mov    $0x3c,%esi
    5741:	pop    %rbx
    5742:	pop    %rbp
    5743:	jmpq   5748 <l2cap_rtx+0x38>
    5748:	nopl   0x0(%rax,%rax,1)