Module Name: src
Committed By: riastradh
Date: Wed Jul 24 02:14:10 UTC 2013
Modified Files:
src/sys/external/bsd/drm2/include/linux [riastradh-drm2]: kernel.h
Log Message:
Define swap in <linux/kernel.h>.
Kinda hokey definition, but this avoids typeof.
To generate a diff of this commit:
cvs rdiff -u -r1.1.2.6 -r1.1.2.7 \
src/sys/external/bsd/drm2/include/linux/kernel.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/include/linux/kernel.h
diff -u src/sys/external/bsd/drm2/include/linux/kernel.h:1.1.2.6 src/sys/external/bsd/drm2/include/linux/kernel.h:1.1.2.7
--- src/sys/external/bsd/drm2/include/linux/kernel.h:1.1.2.6 Wed Jul 24 02:12:00 2013
+++ src/sys/external/bsd/drm2/include/linux/kernel.h Wed Jul 24 02:14:10 2013
@@ -1,4 +1,4 @@
-/* $NetBSD: kernel.h,v 1.1.2.6 2013/07/24 02:12:00 riastradh Exp $ */
+/* $NetBSD: kernel.h,v 1.1.2.7 2013/07/24 02:14:10 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -53,4 +53,17 @@
#define WARN_ON(CONDITION) WARN(CONDITION, "%s\n", #CONDITION)
+#define swap(X, Y) do \
+{ \
+ /* XXX Kludge for type-safety. */ \
+ if (&(X) != &(Y)) { \
+ CTASSERT(sizeof(X) == sizeof(Y)); \
+ /* XXX Can't do this much better without typeof. */ \
+ char __swap_tmp[sizeof(X)]; \
+ (void)memcpy(__swap_tmp, &(X), sizeof(X)); \
+ (void)memcpy(&(X), &(Y), sizeof(X)); \
+ (void)memcpy(&(Y), __swap_tmp, sizeof(X)); \
+ } \
+} while (0)
+
#endif /* _LINUX_KERNEL_H_ */
