#define RESTRICT __restrict__
#define MUST_CHECK __attribute__((warn_unused_result))
#define PACKED __attribute__((packed))
+ #define ALIGNED(x) __attribute__ ((__aligned__(x)))
#if CPU_ARM | CPU_CM3
#define NAKED __attribute__((naked))
#else
#ifndef PACKED
#define PACKED /* nothing */
#endif
+#ifndef ALIGNED
+#define ALIGNED /* nothing */
+#endif
#ifndef MEMORY_BARRIER
#define MEMORY_BARRIER /* nothing */
#warning No memory barrier defined for select compiler. If you use the kernel check it.
do { (void)(&(var) == (type *)0); } while(0)
#endif
+/**
+ * Prevent the compiler from optimizing access to the variable \a x, enforcing
+ * a refetch from memory. This also forbid from reordering successing instances
+ * of ACCESS_SAFE().
+ */
+#define ACCESS_SAFE(x) (*(volatile typeof(x) *)&(x))
+
#endif /* BERTOS_COMPILER_H */