Initial commit

include/l4/macros.h

@@ -0,0 +1,109 @@
+#ifndef __MACROS_H__
+#define __MACROS_H__
+#include "config.h"
+
+/*
+ * This file is automatically included before the first line of any
+ * source file, using gcc's -imacro command line option.  Only macro
+ * definitions will be extracted.
+ */
+
+#define INC_ARCH(x)             <l4/arch/__ARCH__/x>
+#define INC_SUBARCH(x)		<l4/arch/__ARCH__/__SUBARCH__/x>
+#define INC_CPU(x)		<l4/arch/__ARCH__/__SUBARCH__/__CPU__/x>
+#define INC_PLAT(x)             <l4/platform/__PLATFORM__/x>
+#define INC_API(x)              <l4/api/x>
+#define INC_GLUE(x)             <l4/glue/__ARCH__/x>
+
+/* use this to place code/data in a certain section */
+#define SECTION(x) __attribute__((section(x)))
+#define UNIT(x) __attribute__((section(".data." x)))
+
+/*
+ * use WEAK to specifiy a weak function which can be replaced
+ * by a architecture specific optimization
+ * example: void WEAK bla()
+ */
+#define WEAK __attribute__(( weak ))
+
+/*
+ * Marks a function as noreturn.
+ */
+#define NORETURN __attribute__(( noreturn ))
+
+/* Functions for critical path optimizations */
+#if (__GNUC__ >= 3)
+#define unlikely(x)		__builtin_expect((x), false)
+#define likely(x)		__builtin_expect((x), true)
+#define likelyval(x,val)	__builtin_expect((x), (val))
+#else /* __GNUC__ < 3 */
+#define likely(x)		(x)
+#define unlikely(x)		(x)
+#define likelyval(x,val)	(x)
+#endif /* __GNUC__ < 3 */
+
+/* This guard is needed because tests use host C library and NULL is defined */
+#ifndef NULL
+#define NULL			0
+#endif
+/* Convenience functions for memory sizes. */
+#define SZ_1K			1024
+#define SZ_4K			0x1000
+#define SZ_16K			0x4000
+#define SZ_64K			0x10000
+#define SZ_1MB			0x100000
+#define SZ_16MB			(16*SZ_1MB)
+#define SZ_1K_BITS		10
+#define SZ_4K_BITS		12
+#define SZ_16K_BITS		14
+#define SZ_1MB_BITS		20
+
+#ifndef __ASSEMBLY__
+#include <stddef.h>	/* offsetof macro, defined in the `standard' way. */
+#endif
+/* Offset of struct fields. */
+//#if (__GNUC__ >= 4)
+//#define offsetof(type, field)	__builtin_offsetof(type, field)
+//#else
+//#define offsetof(type, field)	(u32)(&((type *)0)->field)
+//#endif
+
+/* LICENSE: Taken off Linux */
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({			\
+        const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+        (type *)( (char *)__mptr - offsetof(type,member) );})
+
+/* Prefetching is noop for now */
+#define	prefetch(x)		x
+
+#if !defined(__KERNEL__)
+#define printk			printf
+#endif
+
+/* TEST: Is this type of printk well tested? */
+#define BUG()			{do {								\
+					printk("BUG in file: %s function: %s line: %d\n",	\
+						__FILE__, __FUNCTION__, __LINE__);		\
+				} while(0);							\
+				while(1);}
+
+#define BUG_ON(x)		{if (x) BUG();}
+
+#define BUG_ON_MSG(msg, x)	do {				\
+					printk(msg);		\
+					BUG_ON(x)		\
+				} while(0)
+
+#define BUG_MSG(msg...)	do {				\
+					printk(msg);	\
+					BUG();			\
+				} while(0)
+#endif /* !__MACROS_H__ */
+