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+
+/* OpenIDA - Outil d'analyse de fichiers binaires
+ * arithm.c - décompilation des opérations arithmétiques
+ *
+ * Copyright (C) 2010 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 "../instruction.h"
+#include "../../../decomp/expr/arithm.h"
+#include "../../../decomp/expr/assign.h"
+#include "../../../decomp/expr/immediate.h"
+
+
+
+/******************************************************************************
+* *
+* Paramètres : instr = instruction d'origine à convertir. *
+* ctx = contexte de la phase de décompilation. *
+* *
+* Description : Décompile une instruction de type 'opérations arithmétiques'.*
+* *
+* Retour : Instruction mise en place ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GDecInstruction *dalvik_decomp_instr_arithm(const GArchInstruction *instr, GDecContext *ctx)
+{
+ GDecInstruction *result; /* Instruction à retourner */
+ ArithmOperationType type; /* Type d'opération menée */
+ GArchOperand *operand; /* Opérande de l'instruction */
+ GDecInstruction *dest; /* Enregistrement du résultat */
+ GDecInstruction *op1; /* Premier opérande utilisé */
+ GDecInstruction *op2; /* Second opérande utilisé */
+ GDecInstruction *arithm; /* Opération arithmétique */
+
+ switch (g_dalvik_instruction_get_opcode(G_DALVIK_INSTRUCTION(instr)))
+ {
+ case DOP_ADD_INT:
+ type = AOT_ADD;
+ break;
+ case DOP_SUB_INT:
+ type = AOT_SUB;
+ break;
+ case DOP_MUL_INT:
+ type = AOT_MUL;
+ break;
+ case DOP_DIV_INT:
+ type = AOT_DIV;
+ break;
+ case DOP_REM_INT:
+ type = AOT_REM;
+ break;
+ case DOP_AND_INT:
+ type = AOT_AND;
+ break;
+ case DOP_OR_INT:
+ type = AOT_OR;
+ break;
+ case DOP_XOR_INT:
+ type = AOT_XOR;
+ break;
+ default:
+ type = AOT_COUNT;
+ break;
+ }
+
+ operand = g_arch_instruction_get_operand(instr, 0);
+ dest = g_dec_context_convert_register(ctx, operand);
+
+ operand = g_arch_instruction_get_operand(instr, 1);
+ op1 = g_dec_context_convert_register(ctx, operand);
+
+ operand = g_arch_instruction_get_operand(instr, 2);
+ op2 = g_dec_context_convert_register(ctx, operand);
+
+ arithm = g_arithm_expression_new(G_DEC_EXPRESSION(op1), type, G_DEC_EXPRESSION(op2));
+ result = g_assign_expression_new(G_DEC_EXPRESSION(dest), G_DEC_EXPRESSION(arithm));
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : instr = instruction d'origine à convertir. *
+* ctx = contexte de la phase de décompilation. *
+* *
+* Description : Décompile une instruction de type 'opérations arithmétiques'.*
+* *
+* Retour : Instruction mise en place ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GDecInstruction *dalvik_decomp_instr_arithm_2addr(const GArchInstruction *instr, GDecContext *ctx)
+{
+ GDecInstruction *result; /* Instruction à retourner */
+ ArithmOperationType type; /* Type d'opération menée */
+ GArchOperand *operand; /* Opérande de l'instruction */
+ GDecInstruction *dest; /* Enregistrement du résultat */
+ GDecInstruction *op1; /* Premier opérande utilisé */
+ GDecInstruction *arithm; /* Opération arithmétique */
+
+ switch (g_dalvik_instruction_get_opcode(G_DALVIK_INSTRUCTION(instr)))
+ {
+ case DOP_ADD_INT_2ADDR:
+ type = AOT_ADD;
+ break;
+ case DOP_MUL_INT_2ADDR:
+ case DOP_MUL_DOUBLE_2ADDR:
+ type = AOT_MUL;
+ break;
+ case DOP_DIV_INT_2ADDR:
+ type = AOT_DIV;
+ break;
+ case DOP_REM_INT_2ADDR:
+ type = AOT_REM;
+ break;
+ case DOP_AND_INT_2ADDR:
+ type = AOT_AND;
+ break;
+ case DOP_OR_INT_2ADDR:
+ type = AOT_OR;
+ break;
+ case DOP_XOR_INT_2ADDR:
+ type = AOT_XOR;
+ break;
+ default:
+ type = AOT_COUNT;
+ break;
+ }
+
+ operand = g_arch_instruction_get_operand(instr, 0);
+ dest = g_dec_context_convert_register(ctx, operand);
+
+ operand = g_arch_instruction_get_operand(instr, 1);
+ op1 = g_dec_context_convert_register(ctx, operand);
+
+ arithm = g_arithm_expression_new(G_DEC_EXPRESSION(dest), type, G_DEC_EXPRESSION(op1));
+ result = g_assign_expression_new(G_DEC_EXPRESSION(dest), G_DEC_EXPRESSION(arithm));
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : instr = instruction d'origine à convertir. *
+* ctx = contexte de la phase de décompilation. *
+* *
+* Description : Décompile une instruction de type 'opérations arithmétiques'.*
+* *
+* Retour : Instruction mise en place ou NULL. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GDecInstruction *dalvik_decomp_instr_arithm_lit(const GArchInstruction *instr, GDecContext *ctx)
+{
+ GDecInstruction *result; /* Instruction à retourner */
+ ArithmOperationType type; /* Type d'opération menée */
+ GArchOperand *operand; /* Opérande de l'instruction */
+ GDecInstruction *dest; /* Enregistrement du résultat */
+ GDecInstruction *op1; /* Premier opérande utilisé */
+ GDecInstruction *op2; /* Second opérande utilisé */
+ GDecInstruction *arithm; /* Opération arithmétique */
+
+ switch (g_dalvik_instruction_get_opcode(G_DALVIK_INSTRUCTION(instr)))
+ {
+ case DOP_ADD_INT_LIT8:
+ case DOP_ADD_INT_LIT16:
+ type = AOT_ADD;
+ break;
+ case DOP_MUL_INT_LIT8:
+ case DOP_MUL_INT_LIT16:
+ type = AOT_MUL;
+ break;
+ case DOP_DIV_INT_LIT8:
+ case DOP_DIV_INT_LIT16:
+ type = AOT_DIV;
+ break;
+ case DOP_REM_INT_LIT8:
+ case DOP_REM_INT_LIT16:
+ type = AOT_REM;
+ break;
+ case DOP_AND_INT_LIT8:
+ case DOP_AND_INT_LIT16:
+ type = AOT_AND;
+ break;
+ case DOP_OR_INT_LIT8:
+ case DOP_OR_INT_LIT16:
+ type = AOT_OR;
+ break;
+ case DOP_XOR_INT_LIT8:
+ case DOP_XOR_INT_LIT16:
+ type = AOT_XOR;
+ break;
+ default:
+ type = AOT_COUNT;
+ break;
+ }
+
+ operand = g_arch_instruction_get_operand(instr, 0);
+ dest = g_dec_context_convert_register(ctx, operand);
+
+ operand = g_arch_instruction_get_operand(instr, 1);
+ op1 = g_dec_context_convert_register(ctx, operand);
+
+ operand = g_arch_instruction_get_operand(instr, 2);
+ op2 = g_imm_expression_new(G_IMM_OPERAND(operand));
+
+ arithm = g_arithm_expression_new(G_DEC_EXPRESSION(op1), type, G_DEC_EXPRESSION(op2));
+ result = g_assign_expression_new(G_DEC_EXPRESSION(dest), G_DEC_EXPRESSION(arithm));
+
+ return result;
+
+}