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/* OpenIDA - Outil d'analyse de fichiers binaires
* iget.c - décompilation des instructions manipulant des champs d'instance (chargement)
*
* Copyright (C) 2012 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 "translate.h"
#include "../../../arch/dalvik/operands/pool.h"
#include "../../../decomp/expr/access.h"
#include "../../../decomp/expr/assign.h"
#include "../../../decomp/expr/pseudo.h"
/******************************************************************************
* *
* Paramètres : instr = instruction d'origine à convertir. *
* ctx = contexte de la phase de décompilation. *
* *
* Description : Décompile une instruction de type 'iget'. *
* *
* Retour : Instruction mise en place ou NULL. *
* *
* Remarques : - *
* *
******************************************************************************/
GDecInstruction *dalvik_decomp_instr_iget(const GArchInstruction *instr, GDecContext *ctx)
{
GDecInstruction *result; /* Instruction à retourner */
vmpa_t addr; /* Adresse de l'instruction */
GArchOperand *operand; /* Opérande de l'instruction */
GDecInstruction *src; /* Registre de l'object */
uint32_t index; /* Indice dans la table */
GDecInstruction *field; /* Champ concerné par l'opérat°*/
GBinVariable *var; /* Variable / champ accédé */
GDecInstruction *dest; /* Registre de destination */
GDecInstruction *access; /* Représentation de l'accès */
g_arch_instruction_get_location(instr, NULL, NULL, &addr);
operand = g_arch_instruction_get_operand(instr, 1);
src = g_dec_context_convert_register(ctx, operand, false, addr);
operand = g_arch_instruction_get_operand(instr, 2);
index = g_dalvik_pool_operand_get_index(G_DALVIK_POOL_OPERAND(operand));
var = get_field_from_dex_pool(G_DEX_FORMAT(g_dec_context_get_format(ctx)), index);
field = g_pseudo_register_new();
g_pseudo_register_set_variable(G_PSEUDO_REGISTER(field), var);
operand = g_arch_instruction_get_operand(instr, 0);
dest = g_dec_context_convert_register(ctx, operand, true, addr);
access = g_access_expression_new(G_DEC_EXPRESSION(src), G_DEC_EXPRESSION(field));
result = g_assign_expression_new(G_DEC_EXPRESSION(dest), G_DEC_EXPRESSION(access));
return result;
}
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