openwrt-owl/toolchain/uClibc/patches-0.9.33.2/020-endian.h-add-some-handy...

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From: "Peter S. Mazinger" <ps.m@gmx.net>
Date: Thu, 21 Apr 2011 21:20:55 +0200
Subject: [PATCH] endian.h: add some handy macros to be used in syscalls
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
---
--- a/include/endian.h
+++ b/include/endian.h
@@ -55,6 +55,17 @@
# define __LONG_LONG_PAIR(HI, LO) HI, LO
#endif
+#ifdef _LIBC
+# ifndef __ASSEMBLER__
+# include <stdint.h>
+# define OFF_HI(offset) (offset >> 31)
+# define OFF_LO(offset) (offset)
+# define OFF64_HI(offset) (uint32_t)(offset >> 32)
+# define OFF64_LO(offset) (uint32_t)(offset & 0xffffffff)
+# define OFF_HI_LO(offset) __LONG_LONG_PAIR(OFF_HI(offset), OFF_LO(offset))
+# define OFF64_HI_LO(offset) __LONG_LONG_PAIR(OFF64_HI(offset), OFF64_LO(offset))
+# endif
+#endif
#ifdef __USE_BSD
/* Conversion interfaces. */