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/* Chrysalide - Outil d'analyse de fichiers binaires
* leb128.h - prototypes pour le support des valeurs encodées au format LEB128.
*
* Copyright (C) 2010-2018 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide 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.
*
* Chrysalide 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _COMMON_LEB128_H
#define _COMMON_LEB128_H
#include <stdbool.h>
#include <stdlib.h>
#include "datatypes.h"
#include "packed.h"
/* Nouveaux types */
typedef uint64_t uleb128_t;
typedef int64_t leb128_t;
/* Quantité de bits utilisés */
#define LEB128_BITS_COUNT (sizeof(leb128_t) * 8)
/* Récupération de la valeur absolue */
#define leb128_abs(v) llabs(v)
/* Valeurs minimales et maximales */
#define ULEB128_MIN UINT64_MIN
#define ULEB128_MAX UINT64_MAX
#define LEB128_MIN INT64_MIN
#define LEB128_MAX INT64_MAX
/* Lit un nombre non signé encodé au format LEB128. */
bool read_uleb128(uleb128_t *, const bin_t *, phys_t *, phys_t);
/* Lit un nombre signé encodé au format LEB128. */
bool read_leb128(leb128_t *, const bin_t *, phys_t *, phys_t);
/* Charge un nombre non signé encodé au format LEB128. */
bool load_uleb128(uleb128_t *, int);
/* Sauvegarde un nombre non signé encodé au format LEB128. */
bool store_uleb128(const uleb128_t *, int);
/* Encode un nombre non signé encodé au format LEB128. */
bool pack_uleb128(const uleb128_t *, packed_buffer_t *);
/* Encode un nombre signé encodé au format LEB128. */
bool pack_leb128(const leb128_t *, packed_buffer_t *);
/* Décode un nombre non signé encodé au format LEB128. */
bool unpack_uleb128(uleb128_t *, packed_buffer_t *);
/* Décode un nombre signé encodé au format LEB128. */
bool unpack_leb128(leb128_t *, packed_buffer_t *);
#endif /* _COMMON_LEB128_H */
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