kill more

1 files changed, 35 insertions, 0 deletions

diff --git a/ext4_common.h b/ext4_common.h
index a3ac298..bf8476c 100644
--- a/ext4_common.h
+++ b/ext4_common.h
@@ -47,6 +47,41 @@
 #define dbg_printf(s, ...)
 #endif
 
+#ifdef UEXT4_DEBUG
+#define _DEBUG	1
+#define debug dbg_printf
+#else
+#define _DEBUG	0
+#define debug(s, ...)
+#endif
+
+/*
+ * An assertion is run-time check done in debug mode only. If DEBUG is not
+ * defined then it is skipped. If DEBUG is defined and the assertion fails,
+ * then it calls panic*( which may or may not reset/halt U-Boot (see
+ * CONFIG_PANIC_HANG), It is hoped that all failing assertions are found
+ * before release, and after release it is hoped that they don't matter. But
+ * in any case these failing assertions cannot be fixed with a reset (which
+ * may just do the same assertion again).
+ */
+void __assert_fail(const char *assertion, const char *file, unsigned int line,
+		   const char *function);
+
+/**
+ * assert() - assert expression is true
+ *
+ * If the expression x evaluates to false and _DEBUG evaluates to true, a panic
+ * message is written and the system stalls. The value of _DEBUG is set to true
+ * if DEBUG is defined before including common.h.
+ *
+ * The expression x is always executed irrespective of the value of _DEBUG.
+ *
+ * @x:		expression to test
+ */
+#define assert(x) \
+	({ if (!(x) && _DEBUG) \
+		__assert_fail(#x, __FILE__, __LINE__, __func__); })
+
 static inline void *zalloc(size_t size)
 {
 	void *p = memalign(ARCH_DMA_MINALIGN, size);