MASK0              24 arch/xtensa/lib/strncpy_user.S # define MASK0 0xff000000
MASK0              29 arch/xtensa/lib/strncpy_user.S # define MASK0 0x000000ff
MASK0              23 arch/xtensa/lib/strnlen_user.S # define MASK0 0xff000000
MASK0              28 arch/xtensa/lib/strnlen_user.S # define MASK0 0x000000ff