求助，AXD调试按Step In时提示错误

用AXD调试时，按Step In提示错误，如图所示： 
 
是软件的问题，还是程序的问题呢？我的程序用的是开发板的实例程序，应该不会错吧。请各位帮忙，谢谢啦！

图显示不了，我把它打下来如下：
You were trying to set a breakpoint on processor ARM920T at address 0x8428 or were stepping/running to this address. This address is located in a literal pool.
ABORT - do not set the breakpoint.
RETRY - set the breakpoint on this occasion and show this warning in future.
IGNORE - set the breakpoint and do not show this warning in future.