/* 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 . */ #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; }