From: Peter Xu <pet...@redhat.com> These macros will be useful to do page alignment checks.
Reviewed-by: Andre Przywara <andre.przyw...@arm.com> Reviewed-by: Eric Auger <eric.au...@redhat.com> Signed-off-by: Peter Xu <pet...@redhat.com> [drew: also added SZ_64K and changed to shifts] Signed-off-by: Andrew Jones <drjo...@redhat.com> --- v6: change to shifts [Alex] --- lib/libcflat.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/libcflat.h b/lib/libcflat.h index c3fa4f24c499..bdcc561ccafd 100644 --- a/lib/libcflat.h +++ b/lib/libcflat.h @@ -33,6 +33,12 @@ #define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) #define __ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1) #define ALIGN(x, a) __ALIGN((x), (a)) +#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) + +#define SZ_4K (1 << 12) +#define SZ_64K (1 << 16) +#define SZ_2M (1 << 21) +#define SZ_1G (1 << 30) typedef uint8_t u8; typedef int8_t s8; -- 2.9.3
