mftb             1384 arch/powerpc/include/asm/reg.h #define mftb()		({unsigned long rval;				\
mftb             1404 arch/powerpc/include/asm/reg.h #define mftb()		({unsigned long rval;	\
mftb             1424 arch/powerpc/include/asm/reg.h #define mftb()		mftbl()
mftb               24 tools/testing/selftests/powerpc/benchmarks/null_syscall.c static inline unsigned long mftb(void)