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[Qemu-devel] [kvm-unit-tests PATCH v4 08/11] libcflat: add IS_ALIGNED()

From: Andrew Jones
Subject: [Qemu-devel] [kvm-unit-tests PATCH v4 08/11] libcflat: add IS_ALIGNED() macro, and page sizes
Date: Tue, 8 Nov 2016 21:21:36 +0100

From: Peter Xu <address@hidden>

These macros will be useful to do page alignment checks.

Signed-off-by: Peter Xu <address@hidden>
[drew: also added SZ_64K]
Signed-off-by: Andrew Jones <address@hidden>
 lib/libcflat.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/libcflat.h b/lib/libcflat.h
index 82005f5d014f..143fc53061fe 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                  (0x1000)
+#define SZ_64K                 (0x10000)
+#define SZ_2M                  (0x200000)
+#define SZ_1G                  (0x40000000)
 typedef uint8_t                u8;
 typedef int8_t         s8;

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