diff options
Diffstat (limited to 'src/arch/dalvik/dop_arithm.c')
| -rw-r--r-- | src/arch/dalvik/dop_arithm.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/arch/dalvik/dop_arithm.c b/src/arch/dalvik/dop_arithm.c new file mode 100644 index 0000000..388f906 --- /dev/null +++ b/src/arch/dalvik/dop_arithm.c @@ -0,0 +1,175 @@ + +/* OpenIDA - Outil d'analyse de fichiers binaires + * dop_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_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 *op2; /* Second 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_pseudo_register_new(); + + operand = g_arch_instruction_get_operand(instr, 1); + op1 = g_pseudo_register_new(); + + operand = g_arch_instruction_get_operand(instr, 2); + op2 = g_pseudo_register_new(); + + 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 */ + 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_pseudo_register_new(); + + operand = g_arch_instruction_get_operand(instr, 1); + op1 = g_pseudo_register_new(); + + 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; + +} |