blob: 57218bfa392cdd64566a86ce0fb484893f5e5cdc [file] [log] [blame] [raw]
#ifndef __OSDEP_H__
#define __OSDEP_H__
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*/
#define __LITTLE_ENDIAN /* x86 */
/* Taken from /usr/include/linux/hfs_sysdep.h */
#if defined(__BIG_ENDIAN)
# if !defined(__constant_htonl)
# define __constant_htonl(x) (x)
# endif
# if !defined(__constant_htons)
# define __constant_htons(x) (x)
# endif
#elif defined(__LITTLE_ENDIAN)
# if !defined(__constant_htonl)
# define __constant_htonl(x) \
((unsigned long int)((((unsigned long int)(x) & 0x000000ffU) << 24) | \
(((unsigned long int)(x) & 0x0000ff00U) << 8) | \
(((unsigned long int)(x) & 0x00ff0000U) >> 8) | \
(((unsigned long int)(x) & 0xff000000U) >> 24)))
# endif
# if !defined(__constant_htons)
# define __constant_htons(x) \
((unsigned short int)((((unsigned short int)(x) & 0x00ff) << 8) | \
(((unsigned short int)(x) & 0xff00) >> 8)))
# endif
#else
# error "Don't know if bytes are big- or little-endian!"
#endif
#define ntohl(x) \
(__builtin_constant_p(x) ? \
__constant_htonl((x)) : \
__swap32(x))
#define htonl(x) \
(__builtin_constant_p(x) ? \
__constant_htonl((x)) : \
__swap32(x))
#define ntohs(x) \
(__builtin_constant_p(x) ? \
__constant_htons((x)) : \
__swap16(x))
#define htons(x) \
(__builtin_constant_p(x) ? \
__constant_htons((x)) : \
__swap16(x))
static inline unsigned long int __swap32(unsigned long int x)
{
__asm__("xchgb %b0,%h0\n\t"
"rorl $16,%0\n\t"
"xchgb %b0,%h0"
: "=q" (x)
: "0" (x));
return x;
}
static inline unsigned short int __swap16(unsigned short int x)
{
__asm__("xchgb %b0,%h0"
: "=q" (x)
: "0" (x));
return x;
}
/* Make routines available to all */
#define swap32(x) __swap32(x)
#define swap16(x) __swap16(x)
#include "linux-asm-io.h"
typedef unsigned long Address;
/* ANSI prototyping macro */
#ifdef __STDC__
#define P(x) x
#else
#define P(x) ()
#endif
#endif
/*
* Local variables:
* c-basic-offset: 8
* End:
*/