/* OpenIDA - Outil d'analyse de fichiers binaires
 * endianness.h - prototypes pour la manipulation abstraite des nombres
 *
 * Copyright (C) 2008 Cyrille Bagard
 *
 *  This file is part of OpenIDA.
 *
 *  OpenIDA 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  OpenIDA 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */


#ifndef _COMMON_ENDIANNESS_H
#define _COMMON_ENDIANNESS_H


#include <stdbool.h>


#include "../arch/archbase.h"



/* Type de boutismes existants */
typedef enum _SourceEndian
{
    SRE_LITTLE,                             /* Petits boutistes            */
    SRE_BIG,                                /* Gros boutistes              */
    SRE_MIDDLE                              /* Moyens boutistes            */

} SourceEndian;


/* Lit un nombre non signé sur 4 bits. */
bool read_u4(uint8_t *, const bin_t *, off_t *, off_t, bool *, SourceEndian);

/* Lit un nombre non signé sur un octet. */
bool read_u8(uint8_t *, const bin_t *, off_t *, off_t, SourceEndian);

/* Lit un nombre non signé sur deux octets. */
bool read_u16(uint16_t *, const bin_t *, off_t *, off_t, SourceEndian);

/* Lit un nombre non signé sur quatre octets. */
bool read_u32(uint32_t *, const bin_t *, off_t *, off_t, SourceEndian);

/* Lit un nombre non signé sur huit octets. */
bool read_u64(uint64_t *, const bin_t *, off_t *, off_t, SourceEndian);


#define read_s4(target, data, pos, len, low, endian) read_u4((uint8_t *)target, data, pos, len, low, endian)
#define read_s8(target, data, pos, len, endian) read_u8((uint8_t *)target, data, pos, len, endian)
#define read_s16(target, data, pos, len, endian) read_u16((uint16_t *)target, data, pos, len, endian)
#define read_s32(target, data, pos, len, endian) read_u32((uint32_t *)target, data, pos, len, endian)
#define read_s64(target, data, pos, len, endian) read_u64((uint64_t *)target, data, pos, len, endian)



#endif  /* _COMMON_ENDIANNESS_H */