=> 0x63d05c <g_type_check_instance_cast+44>:	mov    (%ecx),%esi
   0x63d05e <g_type_check_instance_cast+46>:	cmp    $0x3fc,%esi
   0x63d064 <g_type_check_instance_cast+52>:	ja     0x63d108 <g_type_check_instance_cast+216>
   0x63d06a <g_type_check_instance_cast+58>:	mov    %esi,%eax
   0x63d06c <g_type_check_instance_cast+60>:	shr    $0x2,%eax
   0x63d06f <g_type_check_instance_cast+63>:	mov    0x4cc(%ebx,%eax,4),%edx
   0x63d076 <g_type_check_instance_cast+70>:	test   %edx,%edx
   0x63d078 <g_type_check_instance_cast+72>:	movb   $0x0,-0x20(%ebp)
   0x63d07c <g_type_check_instance_cast+76>:	movl   $0x0,-0x1c(%ebp)
   0x63d083 <g_type_check_instance_cast+83>:	je     0x63d0a4 <g_type_check_instance_cast+116>
   0x63d085 <g_type_check_instance_cast+85>:	movzbl 0xe(%edx),%edi
   0x63d089 <g_type_check_instance_cast+89>:	and    $0x4,%edi
   0x63d08c <g_type_check_instance_cast+92>:	mov    %edi,%eax
   0x63d08e <g_type_check_instance_cast+94>:	cmp    $0x1,%al
   0x63d090 <g_type_check_instance_cast+96>:	sbb    %eax,%eax
   0x63d092 <g_type_check_instance_cast+98>:	add    $0x1,%eax