Move BUG_ONs to include/bug.h

We will need futexes to use in PIE code but futex.h
uses BUG_ON helper, so to diet inclusions move BUG_ONs
code to include/bug.h.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/bug.h

+#ifndef __CR_BUG_H__
+#define __CR_BUG_H__
+
+#include <signal.h>
+
+#include "log.h"
+
+#ifndef BUG_ON_HANDLER
+
+#ifdef CR_NOGLIBC
+# define __raise()
+#else
+# define __raise() raise(SIGABRT)
+#endif
+
+# define BUG_ON_HANDLER(condition)							\
+	do {										\
+		if ((condition)) {							\
+			pr_err("BUG at %s:%d\n", __FILE__, __LINE__);			\
+			__raise();							\
+			*(volatile unsigned long *)NULL = 0xdead0000 + __LINE__;	\
+		}									\
+	} while (0)
+
+#endif /* BUG_ON_HANDLER */
+
+#define BUG_ON(condition)	BUG_ON_HANDLER((condition))
+#define BUG()			BUG_ON(true)
+
+#endif /* __CR_BUG_H__ */

include/util.h

@@ -14,6 +14,7 @@
 
 #include "compiler.h"
 #include "asm/types.h"
+#include "bug.h"
 #include "log.h"
 
 #include "protobuf/vma.pb-c.h"
@@ -31,36 +32,6 @@
 #define MEGA(size)	PREF_SHIFT_OP(K, <<, size)
 #define GIGA(size)	PREF_SHIFT_OP(K, <<, size)
 
-#ifndef BUG_ON_HANDLER
-
-#ifdef CR_NOGLIBC
-
-#define BUG_ON_HANDLER(condition)					\
-	do {								\
-		if ((condition)) {					\
-			pr_err("BUG at %s:%d\n", __FILE__, __LINE__);	\
-			*(volatile unsigned long *)NULL = 0xdead0000 + __LINE__;	\
-		}							\
-	} while (0)
-
-#else /* CR_NOGLIBC */
-
-# define BUG_ON_HANDLER(condition)					\
-	do {								\
-		if ((condition)) {					\
-			pr_err("BUG at %s:%d\n", __FILE__, __LINE__);	\
-			raise(SIGABRT);					\
-			*(volatile unsigned long *)NULL = 0xdead0000 + __LINE__; \
-		}							\
-	} while (0)
-
-#endif /* CR_NOGLIBC */
-
-#endif /* BUG_ON_HANDLER */
-
-#define BUG_ON(condition)	BUG_ON_HANDLER((condition))
-#define BUG()			BUG_ON(true)
-
 /*
  * Write buffer @ptr of @size bytes into @fd file
  * Returns