To be used when endianness matters for argument ordering when reassembling
a 64-bit value out of two register halves.
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
---
include/linux/compat.h | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 0e69d2c..07bcc3c 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -267,5 +267,14 @@ asmlinkage long compat_sys_signalfd(int ufd,
asmlinkage long compat_sys_timerfd(int ufd, int clockid, int flags,
const struct compat_itimerspec __user *utmr);
+static inline u64 compat_merge64(u32 left, u32 right)
+{
+#if defined(__BIG_ENDIAN)
+ return ((u64)left << 32) | right;
+#else /* defined (__LITTLE_ENDIAN) */
+ return ((u64)right << 32) | left;
+#endif
+}
+
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
--
1.5.3.2
-
