=> 0xa4c429 <free+73>:	mov    (%eax),%esi
   0xa4c42b <free+75>:	xor    %eax,%eax
   0xa4c42d <free+77>:	mov    $0x1,%ecx
   0xa4c432 <free+82>:	cmpl   $0x0,%gs:0xc
   0xa4c43a <free+90>:	je     0xa4c43d <free+93>
   0xa4c43c <free+92>:	lock cmpxchg %ecx,(%esi)
   0xa4c440 <free+96>:	jne    0xa4dbbd
   0xa4c446 <free+102>:	mov    %esi,%eax
   0xa4c448 <free+104>:	call   0xa48d00
   0xa4c44d <free+109>:	cmpl   $0x0,%gs:0xc
   0xa4c455 <free+117>:	je     0xa4c458 <free+120>
   0xa4c457 <free+119>:	lock subl $0x1,(%esi)
   0xa4c45b <free+123>:	jne    0xa4dbc9
   0xa4c461 <free+129>:	mov    -0x8(%ebp),%ebx
   0xa4c464 <free+132>:	mov    -0x4(%ebp),%esi
   0xa4c467 <free+135>:	mov    %ebp,%esp