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/* $Id: compiler.h,v 1.42 2009-01-28 14:37:55 potyra Exp $
*
* Copyright (C) 2004-2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#ifndef __COMPILER_H_INCLUDED
#define __COMPILER_H_INCLUDED
#include "build_config.h"
#ifndef __ASSEMBLY__
#include <inttypes.h>
#endif
#define CONST const
#define PACKED __attribute__((__packed__))
#define CODE16 asm(".code16gcc")
#define CODE32 asm(".code32")
#define ASM_ENTRY
#define C_ENTRY
#define ALWAYS_INLINE inline __attribute__((__always_inline__))
#define NOINLINE __attribute__((__noinline__))
/* Pointer macros */
/* Uses linear address pointers */
/*
* ATTENTION!
* The *_VEC versions are special macros for
* setting up the interrupt vector table
* in real mode. This is needed, because
* flaws in the boot programs of some DOSoid
* systems rely on having a lot of 0-bytes
* in the table _AND_ properly initialized
* interrupt vectors.
*/
#ifndef CONFIG_80286_SUPPORT
#define PTR_OFF(__p) (((uint16_t) (uint32_t) (__p) & 0x000f) | 0x8000)
#define PTR_OFF_VEC(__p) (((uint16_t) (uint32_t) (__p) & 0xffff))
#define PTR_SEG(__p) ((uint16_t) (((uint32_t) (__p) >> 4) - 0x800))
#define PTR_SEG_VEC(__p) ((uint16_t) (((uint32_t) (__p) >> 4) & 0xf000))
#else
#define PTR_OFF(__p) ((uint16_t) ((uint32_t) (__p)))
#define PTR_OFF_VEC(__p) ((uint16_t) ((uint32_t) (__p)))
#define PTR_SEG(__p) ((uint16_t) (((uint32_t) (__p) >> 16)))
#define PTR_SEG_VEC(__p) ((uint16_t) (((uint32_t) (__p) >> 16)))
#endif
#define PTR(__s,__o) ((void *) (((uint32_t) (__s) << 4) + (uint32_t) (__o)))
#endif /* __COMPILER_H_INCLUDED */
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