Changeset 0941e9ae in mainline for kernel/generic/include/macros.h

Timestamp:

2012-11-05T20:17:17Z (12 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

94795812

Parents:

082b7f1

Message:

Test for addition overflow of area's base and size.

File:

• kernel/generic/include/macros.h (modified) (1 diff)

kernel/generic/include/macros.h

@@ -130 +130 @@
             | ((((uint64_t) (up)) & UINT32_C(0xffffffff)) << 32))
 
+/* Test for result wrap-around into positive numbers. */
+#define overflows_add(a, b) \
+        (((a) + (b) < (a)) && ((a) + (b)))
+
 /** Pseudorandom generator
  *