[U-Boot] How to generate the exceptions in U-boot

Dear all,

For knowing the exception handler functionality in the U-boot, instead of running the stand alone applications i included the code(which generates the data abort)in the u-boot. When i run board gets hanged. I included the code after enable_interrupts( ) function. I am able to see the handler functionality when i run the stand alone applications but not with the data abort generated code. Can you guide me how to come out from this.

Thanks balaji.V