2013-03-11  Sebastian Huber <sebastian.huber@embedded-brains.de>

	opcodes/
	* nios2-opc.c (nios2_builtin_regs): Add sstatus alias for ba register.

	gas/testsuite/
	* gas/nios2/nios2.exp: Run registers.
	* gas/nios2/registers.d: New file.
	* gas/nios2/registers.s: Likewise.