LOADBU            387 arch/mips/lib/csum_partial.S #define LOADBU(reg, addr, handler)	EXC(lbu, LD_INSN, reg, addr, handler)
LOADBU            407 arch/mips/lib/csum_partial.S #define LOADBU(reg, addr, handler)	EXC(lbu, LD_INSN, reg, addr, handler)