haiku/headers/build/config_build/HaikuConfig.h

/*
 * Copyright 2009-2010, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _CONFIG_HAIKU_CONFIG_H
#define _CONFIG_HAIKU_CONFIG_H


/* Determine the architecture and define macros for some fundamental
   properties:
   __HAIKU_ARCH					- short name of the architecture (used in paths)
   __HAIKU_ARCH_<arch>			- defined to 1 for the respective architecture
   __HAIKU_ARCH_BITS			- defined to 32/64 on 32/64 bit architectures
   								  (defaults to 32)
   __HAIKU_ARCH_PHYSICAL_BITS	- defined to 32/64 on architectures with 32/64
   								  (defaults to __HAIKU_ARCH_BITS)
   __HAIKU_BIG_ENDIAN			- defined to 1 on big endian architectures
   								  (defaults to undefined)
*/
#ifdef __INTEL__
#	define __HAIKU_ARCH				x86
#	define __HAIKU_ARCH_X86			1
#elif __x86_64__
#	define __HAIKU_ARCH				x86_64
#	define __HAIKU_ARCH_X86_64		1
#	define __HAIKU_ARCH_BITS		64
#elif __POWERPC__
#	define __HAIKU_ARCH				ppc
#	define __HAIKU_ARCH_PPC			1
#	define __HAIKU_BIG_ENDIAN		1
#elif __M68K__
#	define __HAIKU_ARCH				m68k
#	define __HAIKU_ARCH_M68K		1
#	define __HAIKU_BIG_ENDIAN		1
#elif __MIPSEL__
#	define __HAIKU_ARCH				mipsel
#	define __HAIKU_ARCH_MIPSEL		1
#elif __ARM__ || __ARMEL__
#	define __HAIKU_ARCH				arm
#	define __HAIKU_ARCH_ARM			1
#elif __ARMEB__
#	define __HAIKU_ARCH				armeb
#	define __HAIKU_ARCH_ARM			1
#	define __HAIKU_BIG_ENDIAN		1
#else
#	error Unsupported architecture!
#endif

/* implied properties:
   __HAIKU_ARCH_{32,64}_BIT		- defined to 1 on 32/64 bit architectures, i.e.
   								  using 32/64 bit virtual addresses
   __HAIKU_ARCH_PHYSICAL_BITS	- defined to 32/64 on architectures with 32/64
   								  bit physical addresses
   __HAIKU_ARCH_PHYSICAL_{32,64}_BIT - defined to 1 on architectures using 64
   								  bit physical addresses
   __HAIKU_BIG_ENDIAN			- defined to 1 on big endian architectures
*/

/* bitness */
#ifndef __HAIKU_ARCH_BITS
#	define __HAIKU_ARCH_BITS		32
#endif

#if __HAIKU_ARCH_BITS == 32
#	define __HAIKU_ARCH_32_BIT		1
#elif __HAIKU_ARCH_BITS == 64
#	define __HAIKU_ARCH_64_BIT		1
#else
#	error Unsupported bitness!
#endif

/* physical bitness */
#ifndef __HAIKU_ARCH_PHYSICAL_BITS
#	define __HAIKU_ARCH_PHYSICAL_BITS	__HAIKU_ARCH_BITS
#endif

#if __HAIKU_ARCH_PHYSICAL_BITS == 32
#	define __HAIKU_ARCH_PHYSICAL_32_BIT	1
#elif __HAIKU_ARCH_PHYSICAL_BITS == 64
#	define __HAIKU_ARCH_PHYSICAL_64_BIT	1
#else
#	error Unsupported physical bitness!
#endif

/* endianess */
#ifndef __HAIKU_BIG_ENDIAN
#	define	__HAIKU_LITTLE_ENDIAN	1
#endif

/* architecture specific include macros */
#define __HAIKU_ARCH_HEADER(header)					<arch/__HAIKU_ARCH/header>
#define __HAIKU_SUBDIR_ARCH_HEADER(subdir, header)	\
	<subdir/arch/__HAIKU_ARCH/header>


#endif	/* _CONFIG_HAIKU_CONFIG_H */