src/helper/types.h

   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2005 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef TYPES_H
  21 #define TYPES_H
  22
  23 #include "config.h"
  24
  25 #ifndef u8
  26 typedef unsigned char u8;
  27 #endif
  28
  29 #ifndef u16
  30 typedef unsigned short u16;
  31 #endif
  32
  33 #ifndef u32
  34 typedef unsigned int u32;
  35 #endif
  36
  37 #ifndef u64
  38 typedef unsigned long long u64;
  39 #endif
  40
  41 #ifdef WORDS_BIGENDIAN /* big endian host */
  42
  43 #define le_to_h_u32(x) (u32)((x)[0] | (x)[1] << 8 | (x)[2] << 16 | (x)[3] << 24)
  44 #define le_to_h_u16(x) (u16)((x)[0] | (x)[1] << 8)
  45 #define be_to_h_u32(x) (*(u32*)(x))
  46 #define be_to_h_u16(x) (*(u16*)(x))
  47
  48 #define h_u32_to_le(buf, val) \
  49         do { \
  50                 (buf)[3] = ((val) & 0xff000000) >> 24; \
  51                 (buf)[2] = ((val) & 0x00ff0000) >> 16; \
  52                 (buf)[1] = ((val) & 0x0000ff00) >> 8; \
  53                 (buf)[0] = ((val) & 0x000000ff); \
  54         } while (0)
  55
  56 #define h_u16_to_le(buf, val)  \
  57         do { \
  58                 (buf)[0] = ((val) & 0xff000) >> 8; \
  59                 (buf)[1] = ((val) & 0x00ff); \
  60         } while (0)
  61
  62 #define h_u32_to_be(buf, val) do { *(u32*)(buf) = (val); } while (0)
  63 #define h_u16_to_be(buf, val) do { *(u16*)(buf) = (val); } while (0)
  64
  65 #else /* little endian host */
  66 #define le_to_h_u32(x) (*(u32*)(x))
  67 #define le_to_h_u16(x) (*(u16*)(x))
  68 #define be_to_h_u32(x) (u32)((x)[3] | (x)[2] << 8 | (x)[1] << 16 | (x)[0] << 24)
  69 #define be_to_h_u16(x) (u16)((x)[1] | (x)[0] << 8)
  70
  71 #define h_u32_to_le(buf, val) do { *(u32*)(buf) = (val); } while (0)
  72 #define h_u16_to_le(buf, val) do { *(u16*)(buf) = (val); } while (0)
  73
  74 #define h_u32_to_be(buf, val) \
  75         do { \
  76                 (buf)[0] = ((val) & 0xff000000) >> 24; \
  77                 (buf)[1] = ((val) & 0x00ff0000) >> 16; \
  78                 (buf)[2] = ((val) & 0x0000ff00) >> 8; \
  79                 (buf)[3] = ((val) & 0x000000ff); \
  80         } while (0)
  81
  82 #define h_u16_to_be(buf, val) \
  83         do { \
  84                 (buf)[0] = ((val) & 0xff000) >> 8; \
  85                 (buf)[1] = ((val) & 0x00ff); \
  86         } while (0)
  87 #endif
  88
  89 #endif /* TYPES_H */