Debug Registers http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.100165_0201_00_en/ric1417175947147.html
Debug Core Register Data Register
Debug Core Register Selector Register, write only
Debug Exception and Monitor Control Register
Debug Fault Status Register
Debug Halting Control and Status Register
Debug Registers http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.100165_0201_00_en/ric1417175947147.html