* Default version that the compiler ought to optimize properly with
* constant values.
*/
-static inline unsigned int default_swab32(unsigned int val)
+static inline uint32_t default_swab32(uint32_t val)
{
return (((val & 0xff000000) >> 24) |
((val & 0x00ff0000) >> 8) |
((val & 0x000000ff) << 24));
}
+#undef bswap32
+
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
#define bswap32(x) ({ \
- unsigned int __res; \
+ uint32_t __res; \
if (__builtin_constant_p(x)) { \
__res = default_swab32(x); \
} else { \
- __asm__("bswap %0" : "=r" (__res) : "0" (x)); \
+ __asm__("bswap %0" : "=r" (__res) : "0" ((uint32_t)(x))); \
} \
__res; })
+#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
+
+#include <stdlib.h>
+
+#define bswap32(x) _byteswap_ulong(x)
+
+#endif
+
+#ifdef bswap32
+
#undef ntohl
#undef htonl
#define ntohl(x) bswap32(x)