datatypes.h

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/* ES40 emulator.
 * Copyright (C) 2007-2008 by the ES40 Emulator Project
 *
 * WWW    : http://sourceforge.net/projects/es40
 * E-mail : camiel@camicom.com
 * 
 * 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
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * 
 * Although this is not required, the author would appreciate being notified of, 
 * and receiving any modifications you may make to the source code that might serve
 * the general public.
 */

#if !defined(INCLUDED_DATATYPES_H)
#define INCLUDED_DATATYPES_H

#if defined(HAVE_STDINT_H)
#include <stdint.h>
#endif

#if defined(HAVE_INTTYPES_H)
#include <inttypes.h>
#endif

#if defined(_WIN32) && !defined(__GNUWIN32__)

#define U64(a)  a##ui64
#define LL      "I64"

#else // defined(_WIN32)

#define U64(a)  a##ll
#define LL      "ll"

#endif // defined(_WIN32)


typedef uint8_t   u8;
typedef uint16_t  u16;
typedef uint32_t  u32;
typedef uint64_t  u64;

typedef int8_t    s8;
typedef int16_t   s16;
typedef int32_t   s32;
typedef int64_t   s64;

typedef u8  u_int8_t;
typedef u16 u_int16_t;
typedef u32 u_int32_t;
typedef u64 u_int64_t;

#define HAVE_U_INT8_T   1
#define HAVE_INT8_T     1
#define HAVE_U_INT16_T  1
#define HAVE_INT16_T    1
#define HAVE_U_INT32_T  1
#define HAVE_INT32_T    1
#define HAVE_U_INT64_T  1
#define HAVE_INT64_T    1

inline u64 sext_u64_8(u64 a)
{
  return
    (
      ((a) & U64(0x0000000000000080)) ? ((a) | U64(0xffffffffffffff00)) :
        ((a) & U64(0x00000000000000ff))
    );
}

inline u64 sext_u64_12(u64 a)
{
  return
    (
      ((a) & U64(0x0000000000000800)) ? ((a) | U64(0xfffffffffffff000)) :
        ((a) & U64(0x0000000000000fff))
    );
}

inline u64 sext_u64_13(u64 a)
{
  return
    (
      ((a) & U64(0x0000000000001000)) ? ((a) | U64(0xffffffffffffe000)) :
        ((a) & U64(0x0000000000001fff))
    );
}

inline u64 sext_u64_16(u64 a)
{
  return
    (
      ((a) & U64(0x0000000000008000)) ? ((a) | U64(0xffffffffffff0000)) :
        ((a) & U64(0x000000000000ffff))
    );
}

inline u64 sext_u64_21(u64 a)
{
  return
    (
      ((a) & U64(0x0000000000100000)) ? ((a) | U64(0xffffffffffe00000)) :
        ((a) & U64(0x00000000001fffff))
    );
}

inline u64 sext_u64_32(u64 a)
{
  return
    (
      ((a) & U64(0x0000000080000000)) ? ((a) | U64(0xffffffff00000000)) :
        ((a) & U64(0x00000000ffffffff))
    );
}

inline u64 sext_u64_48(u64 a)
{
  return
    (
      ((a) & U64(0x0000800000000000)) ? ((a) | U64(0xffff000000000000)) :
        ((a) & U64(0x0000ffffffffffff))
    );
}

inline bool test_bit_64(u64 x, int bit)
{
  return(x & (U64(0x1) << bit)) ? true : false;
}

inline u32 sext_u32_24(u32 a)
{
  return(((a) & 0x00800000) ? ((a) | 0xff000000) : ((a) & 0x00ffffff));
}
#endif //INCLUDED_DATATYPES_H

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