Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3

nuttx/arch/arm/include/calypso/debug.h

@@ -0,0 +1,31 @@
+#ifndef _DEBUG_H
+#define _DEBUG_H
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+#endif
+
+/*
+ * Check at compile time that something is of a particular type.
+ * Always evaluates to 1 so you may use it easily in comparisons.
+ */
+#define typecheck(type,x) \
+({	type __dummy; \
+	typeof(x) __dummy2; \
+	(void)(&__dummy == &__dummy2); \
+	1; \
+})
+
+#ifdef DEBUG
+#define dputchar(x) putchar(x)
+#define dputs(x) puts(x)
+#define dphex(x,y) phex(x,y)
+#define printd(x, args ...) printf(x, ## args)
+#else
+#define dputchar(x)
+#define dputs(x)
+#define dphex(x,y)
+#define printd(x, args ...)
+#endif
+
+#endif /* _DEBUG_H */