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[OSKITTCP]

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Use RtlUlongByteSwap / RtlUshortByteSwap for byte swapping. They are portable and intrinsics on x86.

svn path=/trunk/; revision=47831
This commit is contained in:
Timo Kreuzer 2010-06-23 11:37:39 +00:00
parent 6b1edeb54a
commit 0959625c7e
1 changed files with 2 additions and 55 deletions
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57
reactos/lib/drivers/oskittcp/include/freebsd/src/sys/machine/endian.h
View file

@ -56,61 +56,8 @@
#include <sys/cdefs.h>
#endif
#ifdef _MSC_VER
static inline unsigned long __byte_swap_long ( unsigned long i )
{
char dst[4];
char* src = (char*)&i;
dst[0] = src[3];
dst[1] = src[2];
dst[2] = src[1];
dst[3] = src[0];
return *(unsigned long*)&dst[0];
}
static inline unsigned short __byte_swap_word ( unsigned short i )
{
char dst[2];
char* src = (char*)&i;
dst[0] = src[1];
dst[1] = src[0];
return *(unsigned short*)&dst[0];
}
#else/*_MSC_VER*/
#define __word_swap_long(x) \
({ register u_long __X = (x); \
__asm ("rorl $16, %1" \
: "=r" (__X) \
: "0" (__X)); \
__X; })
#if __GNUC__ >= 2
#define __byte_swap_long(x) \
__extension__ ({ register u_long __X = (x); \
__asm ("xchgb %h1, %b1\n\trorl $16, %1\n\txchgb %h1, %b1" \
: "=q" (__X) \
: "0" (__X)); \
__X; })
#define __byte_swap_word(x) \
__extension__ ({ register u_short __X = (x); \
__asm ("xchgb %h1, %b1" \
: "=q" (__X) \
: "0" (__X)); \
__X; })
#else /* __GNUC__ >= 2 */
#define __byte_swap_long(x) \
({ register u_long __X = (x); \
__asm ("rorw $8, %w1\n\trorl $16, %1\n\trorw $8, %w1" \
: "=r" (__X) \
: "0" (__X)); \
__X; })
#define __byte_swap_word(x) \
({ register u_short __X = (x); \
__asm ("rorw $8, %w1" \
: "=r" (__X) \
: "0" (__X)); \
__X; })
#endif /* __GNUC__ >= 2 */
#endif /* _MSC_VER */
#define __byte_swap_long RtlUlongByteSwap
#define __byte_swap_word RtlUshortByteSwap
/*
* Macros for network/external number representation conversion.