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/* Chrysalide - Outil d'analyse de fichiers binaires
* addressing.c - prise en compte des modes d'adressage ARM v4/5/6
*
* Copyright (C) 2013 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* 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 "addressing.h"
#include "encoding.h"
#include "register.h"
#include "operands/content.h"
#include "operands/register.h"
/******************************************************************************
* *
* Paramètres : instr = instruction à compléter. *
* data = mot de données contenant les indications. *
* format = format du binaire manipulé. *
* *
* Description : Charge les opérandes selon le mode d'adressage § A5.2.1. *
* *
* Retour : true si le décodage s'est bien déroulé. *
* *
* Remarques : - *
* *
******************************************************************************/
bool build_v456_operands_with_load_immediate_offset(GArmV456Instruction *instr, uint32_t data, const GExeFormat *format)
{
uint8_t rd_index; /* Indice du registre Rd */
GArmV456Register *rd_reg; /* Registre Rd en place */
GArchOperand *op; /* Opérande à ajouter */
uint8_t rn_index; /* Indice du registre Rn */
GArmV456Register *rn_reg; /* Registre Rn en place */
uint16_t value; /* Valeur de décallage */
GImmOperand *offset; /* Opérande de décallage */
bool add; /* Utilisation du décallage */
/* Destination */
rd_index = ARM_V456_REG_RD(data);
rd_reg = g_armv456_register_new(rd_index);
op = g_armv456_register_operand_new_from_existing(rd_reg);
g_arch_instruction_attach_extra_operand(G_ARCH_INSTRUCTION(instr), op);
/* Source */
rn_index = ARM_V456_REG_RN(data);
rn_reg = g_armv456_register_new(rn_index);
value = ARM_V456_ADDR_MODE(data);
offset = G_IMM_OPERAND(g_imm_operand_new_from_value(MDS_16_BITS_UNSIGNED, value));
add = (data & ARM_V456_BIT_U);
op = g_armv456_content_operand_new(rn_reg, offset, add);
g_arch_instruction_attach_extra_operand(G_ARCH_INSTRUCTION(instr), op);
return true;
}
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