cpp/openttd-patchpack/source Files · src/core/endian_func.hpp

Files @ r12162:c4894f5339c3

Branch filter:

Location: cpp/openttd-patchpack/source/src/core/endian_func.hpp

r12162:c4894f5339c3 1.2 KiB text/x-c++hdr Show Annotation Show as Raw Download as Raw

rubidium

(svn r16583) -Update: the order of the language files so it's in sync with english.txt. Normally WT2 would do this, but only with activity for those languages. Now we'd like to the order to match so we can more easily spot import bugs while developing WT3.

/* $Id$ */

/** @file endian_func.hpp Function to handling different endian machines. */

#ifndef ENDIAN_FUNC_HPP
#define ENDIAN_FUNC_HPP

#include "endian_type.hpp"
#include "bitmath_func.hpp"

/* Setup alignment and conversion macros */
#if TTD_ENDIAN == TTD_BIG_ENDIAN
	#define FROM_BE16(x) (x)
	#define FROM_BE32(x) (x)
	#define TO_BE16(x)   (x)
	#define TO_BE32(x)   (x)
	#define TO_BE32X(x)  (x)
	#define FROM_LE16(x) BSWAP16(x)
	#define FROM_LE32(x) BSWAP32(x)
	#define TO_LE16(x)   BSWAP16(x)
	#define TO_LE32(x)   BSWAP32(x)
	#define TO_LE32X(x)  BSWAP32(x)
#else
	#define FROM_BE16(x) BSWAP16(x)
	#define FROM_BE32(x) BSWAP32(x)
	#define TO_BE16(x)   BSWAP16(x)
	#define TO_BE32(x)   BSWAP32(x)
	#define TO_BE32X(x)  BSWAP32(x)
	#define FROM_LE16(x) (x)
	#define FROM_LE32(x) (x)
	#define TO_LE16(x)   (x)
	#define TO_LE32(x)   (x)
	#define TO_LE32X(x)  (x)
#endif /* TTD_ENDIAN == TTD_BIG_ENDIAN */

static FORCEINLINE uint16 ReadLE16Aligned(const void *x)
{
	return FROM_LE16(*(const uint16*)x);
}

static FORCEINLINE uint16 ReadLE16Unaligned(const void *x)
{
#if OTTD_ALIGNMENT == 1
	return ((const byte*)x)[0] | ((const byte*)x)[1] << 8;
#else
	return FROM_LE16(*(const uint16*)x);
#endif /* OTTD_ALIGNMENT == 1 */
}

#endif /* ENDIAN_FUNC_HPP */