freemyipod r297 - Code Review

Repository:	freemyipod
Revision:	< r296‎ \| r297 \| r298 >
Date:	18:22, 1 December 2010
Author:	theseven
Status:	new
Tags:
Comment:	emBIOS: Add some useful macros (can also be used from apps)
Modified paths:	/embios/trunk/global.h (modified) (history) /embios/trunk/util.h (modified) (history)

Diff [purge]

Index: embios/trunk/util.h
—	—	@@ -46,6 +46,34 @@
47	47	/* return p incremented by specified number of bytes */
48	48	#define SKIPBYTES(p, count) ((typeof (p))((char *)(p) + (count)))
49	49
	50	+#define BIT(x) (1 << (x))
	51	+#define BITRANGE(x, y) ((0xfffffffful >> (31 + (x) - (y))) << (x))
	52	+
	53	+#define ERR_RC(val) (BIT(31) \| (val))
	54	+#define RET_ERR(val) \
	55	+{ \
	56	+ return ERR_RC(val); \
	57	+}
	58	+#define RET_ERR_MTX(val, mutex) \
	59	+{ \
	60	+ mutex_unlock(mutex); \
	61	+ return ERR_RC(val); \
	62	+}
	63	+#define PASS_RC(expr, bits, val) \
	64	+{ \
	65	+ int rc = (expr); \
	66	+ if (rc & BIT(31)) return ERR_RC((rc << (bits)) \| (val)); \
	67	+}
	68	+#define PASS_RC_MTX(expr, bits, val, mutex) \
	69	+{ \
	70	+ int rc = (expr); \
	71	+ if (rc & BIT(31)) \
	72	+ { \
	73	+ mutex_unlock(mutex); \
	74	+ return ERR_RC((rc << (bits)) \| (val)); \
	75	+ } \
	76	+}
	77	+
50	78	#define P2_M1(p2) ((1 << (p2))-1)
51	79
52	80	/* align up or down to nearest 2^p2 */
Index: embios/trunk/global.h
—	—	@@ -56,7 +56,10 @@
57	57	#include "build/version.h"
58	58	#include "configmagic.h"
59	59	#endif
	60	+#ifndef ASM_FILE
	61	+#include "util.h"
60	62	#include "debug.h"
	63	+#endif
61	64
62	65
63	66	#endif