/* OpenIDA - Outil d'analyse de fichiers binaires
 * instruction.c - gestion générique des instructions
 *
 * 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/>.
 */


#include "instruction.h"


#include <malloc.h>


#include "instruction-int.h"



/******************************************************************************
*                                                                             *
*  Paramètres  : data = flux de données à analyser.                           *
*                pos  = position courante dans ce flux. [OUT]                 *
*                len  = taille totale des données à analyser.                 *
*                                                                             *
*  Description : Crée une instruction de type 'db' à partir de données.       *
*                                                                             *
*  Retour      : Instruction mise en place.                                   *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

asm_instr *create_db_instruction(const uint8_t *data, off_t *pos, off_t len)
{
    asm_instr *result;                      /* Représentation à renvoyer   */

    result = (asm_instr *)calloc(1, sizeof(asm_instr));

    result->opcode = DB_OPCODE;

    result->type = AIT_DB;

    /* TODO: check result */
    result->operands = (asm_operand **)calloc(1, sizeof(asm_operand *));
    result->operands[0] = (asm_operand *)calloc(1, sizeof(asm_operand));
    fill_db_operand(result->operands[0], data[(*pos)++]);

    result->operands_count = 1;

    return result;

}


/******************************************************************************
*                                                                             *
*  Paramètres  : instr  = instruction quelconque à traiter.                   *
*                offset = position physique dans le code binaire / NULL. [OUT]*
*                length = taille de l'instruction ou NULL. [OUT]              *
*                                                                             *
*  Description : Indique la position et/ou la taille d'une instruction.       *
*                                                                             *
*  Retour      : -                                                            *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

void get_asm_instr_offset_and_length(const asm_instr *instr, off_t *offset, off_t *length)
{
    if (offset != NULL) *offset = instr->offset;
    if (length != NULL) *length = instr->length;

}