From: Samuel Thibault <samuel.thibault@eu.citrix.com>
To: Xen-devel@lists.xensource.com
Subject: [PATCH] minios: use inlines instead of macros for bswap*
Date: Fri, 6 Jun 2008 11:27:47 +0100 [thread overview]
Message-ID: <20080606102747.GD4637@implementation.uk.xensource.com> (raw)
minios: use inlines instead of macros for bswap*
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
diff -r b320cfe1f10f extras/mini-os/include/byteswap.h
--- a/extras/mini-os/include/byteswap.h Thu Jun 05 13:04:07 2008 +0100
+++ b/extras/mini-os/include/byteswap.h Fri Jun 06 11:28:08 2008 +0100
@@ -2,21 +2,32 @@
#define _BYTESWAP_H_
/* Unfortunately not provided by newlib. */
-#define bswap_16(x) \
- ((((x) & 0xff00) >> 8) | (((x) & 0xff) << 8))
-#define bswap_32(x) \
- ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
- (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
+#include <types.h>
+static inline uint16_t bswap_16(uint16_t x)
+{
+ return
+ ((((x) & 0xff00) >> 8) | (((x) & 0xff) << 8));
+}
-#define bswap_64(x) \
- ((((x) & 0xff00000000000000ULL) >> 56) | \
- (((x) & 0x00ff000000000000ULL) >> 40) | \
- (((x) & 0x0000ff0000000000ULL) >> 24) | \
- (((x) & 0x000000ff00000000ULL) >> 8) | \
- (((x) & 0x00000000ff000000ULL) << 8) | \
- (((x) & 0x0000000000ff0000ULL) << 24) | \
- (((x) & 0x000000000000ff00ULL) << 40) | \
- (((x) & 0x00000000000000ffULL) << 56))
+static inline uint32_t bswap_32(uint32_t x)
+{
+ return
+ ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) |
+ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24));
+}
+
+static inline uint64_t bswap_64(uint64_t x)
+{
+ return
+ ((((x) & 0xff00000000000000ULL) >> 56) |
+ (((x) & 0x00ff000000000000ULL) >> 40) |
+ (((x) & 0x0000ff0000000000ULL) >> 24) |
+ (((x) & 0x000000ff00000000ULL) >> 8) |
+ (((x) & 0x00000000ff000000ULL) << 8) |
+ (((x) & 0x0000000000ff0000ULL) << 24) |
+ (((x) & 0x000000000000ff00ULL) << 40) |
+ (((x) & 0x00000000000000ffULL) << 56));
+}
#endif /* _BYTESWAP_H */
reply other threads:[~2008-06-06 10:27 UTC|newest]
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