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/* Chrysalide - Outil d'analyse de fichiers binaires
* arithm.c - décompilation des opérations arithmétiques
*
* Copyright (C) 2010-2013 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 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 */
vmpa_t addr; /* Adresse de l'instruction */
GArchOperand *operand; /* Opérande de l'instruction */
GDecInstruction *op1; /* Premier opérande utilisé */
GDecInstruction *op2; /* Second opérande utilisé */
GDecInstruction *dest; /* Enregistrement du résultat */
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;
}
g_arch_instruction_get_location(instr, NULL, NULL, &addr);
operand = g_arch_instruction_get_operand(instr, 1);
op1 = g_dec_context_convert_register(ctx, operand, false, addr);
operand = g_arch_instruction_get_operand(instr, 2);
op2 = g_dec_context_convert_register(ctx, operand, false, addr);
operand = g_arch_instruction_get_operand(instr, 0);
dest = g_dec_context_convert_register(ctx, operand, true, addr);
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 */
vmpa_t addr; /* Adresse de l'instruction */
GArchOperand *operand; /* Opérande de l'instruction */
GDecInstruction *op1; /* Premier opérande utilisé */
GDecInstruction *op2; /* Second opérande utilisé */
GDecInstruction *dest; /* Enregistrement du résultat */
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;
}
g_arch_instruction_get_location(instr, NULL, NULL, &addr);
operand = g_arch_instruction_get_operand(instr, 1);
op2 = g_dec_context_convert_register(ctx, operand, false, addr);
operand = g_arch_instruction_get_operand(instr, 0);
op1 = g_dec_context_convert_register(ctx, operand, false, addr);
dest = g_dec_context_convert_register(ctx, operand, true, addr);
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_lit(const GArchInstruction *instr, GDecContext *ctx)
{
GDecInstruction *result; /* Instruction à retourner */
ArithmOperationType type; /* Type d'opération menée */
vmpa_t addr; /* Adresse de l'instruction */
GArchOperand *operand; /* Opérande de l'instruction */
GDecInstruction *op1; /* Premier opérande utilisé */
GDecInstruction *op2; /* Second opérande utilisé */
GDecInstruction *dest; /* Enregistrement du résultat */
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;
}
g_arch_instruction_get_location(instr, NULL, NULL, &addr);
operand = g_arch_instruction_get_operand(instr, 1);
op1 = g_dec_context_convert_register(ctx, operand, false, addr);
operand = g_arch_instruction_get_operand(instr, 2);
op2 = g_imm_expression_new(G_IMM_OPERAND(operand));
operand = g_arch_instruction_get_operand(instr, 0);
dest = g_dec_context_convert_register(ctx, operand, true, addr);
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;
}
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