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/* OpenIDA - Outil d'analyse de fichiers binaires
* processor.c - manipulation du processeur de la VM Dalvik
*
* 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 "processor.h"
#include "instruction.h"
#include "opcodes.h"
#include "../processor-int.h"
/* Définition du processeur de la VM Dalvik (instance) */
struct _GDalvikProcessor
{
GArchProcessor parent; /* Instance parente */
};
/* Définition du processeur de la VM Dalvik (classe) */
struct _GDalvikProcessorClass
{
GArchProcessorClass parent; /* Classe parente */
};
/* Initialise la classe des processeurs de VM Dalvik. */
static void g_dalvik_processor_class_init(GDalvikProcessorClass *);
/* Initialise une instance de processeur de VM Dalvik. */
static void g_dalvik_processor_init(GDalvikProcessor *);
/* Décode une instruction dans un flux de données. */
static GArchInstruction *g_dalvik_processor_decode_instruction(const GDalvikProcessor *, const bin_t *, off_t *, off_t, vmpa_t);
/* Indique le type défini par la GLib pour le processeur DALVIK. */
G_DEFINE_TYPE(GDalvikProcessor, g_dalvik_processor, G_TYPE_ARCH_PROCESSOR);
/******************************************************************************
* *
* Paramètres : klass = classe à initialiser. *
* *
* Description : Initialise la classe des processeurs de VM Dalvik. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_dalvik_processor_class_init(GDalvikProcessorClass *klass)
{
}
/******************************************************************************
* *
* Paramètres : proc = instance à initialiser. *
* *
* Description : Initialise une instance de processeur de VM Dalvik. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void g_dalvik_processor_init(GDalvikProcessor *proc)
{
GArchProcessor *parent; /* Instance parente */
parent = G_ARCH_PROCESSOR(proc);
parent->endianness = SRE_LITTLE;
parent->memsize = MDS_32_BITS;
parent->decode = (decode_instruction_fc)g_dalvik_processor_decode_instruction;
}
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Crée le support de l'architecture Dalvik. *
* *
* Retour : Architecture mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
GArchProcessor *g_dalvik_processor_new(void)
{
GArchProcessor *result; /* Structure à retourner */
result = g_object_new(G_TYPE_DALVIK_PROCESSOR, NULL);
return result;
}
/******************************************************************************
* *
* Paramètres : proc = architecture visée par la procédure. *
* data = flux de données à analyser. *
* pos = position courante dans ce flux. [OUT] *
* len = taille totale des données à analyser. *
* addr = adresse virtuelle de l'instruction. *
* *
* Description : Décode une instruction dans un flux de données. *
* *
* Retour : Instruction mise en place. *
* *
* Remarques : - *
* *
******************************************************************************/
static GArchInstruction *g_dalvik_processor_decode_instruction(const GDalvikProcessor *proc, const bin_t *data, off_t *pos, off_t len, vmpa_t addr)
{
GArchInstruction *result; /* Instruction à renvoyer */
DalvikOpcodes id; /* Identifiant d'instruction */
static const dalvik_read_instr decodings[DOP_COUNT] = {
[DOP_NOP] = dalvik_read_instr_nop,
[DOP_MOVE_RESULT_OBJECT] = dalvik_read_instr_move_result_object,
[DOP_CONST_4] = dalvik_read_instr_const_4,
[DOP_CONST_16] = dalvik_read_instr_const_16,
[DOP_CONST_HIGH16] = dalvik_read_instr_const_high16,
[DOP_CONST_STRING] = dalvik_read_instr_const_string,
[DOP_RETURN_VOID] = dalvik_read_instr_return_void,
[DOP_RETURN] = dalvik_read_instr_return,
[DOP_NEW_INSTANCE] = dalvik_read_instr_new_instance,
[DOP_IGET] = dalvik_read_instr_iget,
[DOP_IGET_WIDE] = dalvik_read_instr_iget_wide,
[DOP_IGET_OBJECT] = dalvik_read_instr_iget_object,
[DOP_IGET_BOOLEAN] = dalvik_read_instr_iget_boolean,
[DOP_IGET_BYTE] = dalvik_read_instr_iget_byte,
[DOP_IGET_CHAR] = dalvik_read_instr_iget_char,
[DOP_IGET_SHORT] = dalvik_read_instr_iget_short,
[DOP_IPUT] = dalvik_read_instr_iput,
[DOP_IPUT_WIDE] = dalvik_read_instr_iput_wide,
[DOP_IPUT_OBJECT] = dalvik_read_instr_iput_object,
[DOP_IPUT_BOOLEAN] = dalvik_read_instr_iput_boolean,
[DOP_IPUT_BYTE] = dalvik_read_instr_iput_byte,
[DOP_IPUT_CHAR] = dalvik_read_instr_iput_char,
[DOP_IPUT_SHORT] = dalvik_read_instr_iput_short,
[DOP_SGET] = dalvik_read_instr_sget,
[DOP_SGET_WIDE] = dalvik_read_instr_sget_wide,
[DOP_SGET_OBJECT] = dalvik_read_instr_sget_object,
[DOP_INVOKE_VIRTUAL] = dalvik_read_instr_invoke_virtual,
[DOP_INVOKE_SUPER] = dalvik_read_instr_invoke_super,
[DOP_INVOKE_DIRECT] = dalvik_read_instr_invoke_direct,
[DOP_INVOKE_STATIC] = dalvik_read_instr_invoke_static,
[DOP_INVOKE_INTERFACE] = dalvik_read_instr_invoke_interface,
[DOP_ADD_INT] = dalvik_read_instr_add_int,
[DOP_MUL_INT] = dalvik_read_instr_mul_int,
[DOP_DIV_INT] = dalvik_read_instr_div_int,
[DOP_REM_INT] = dalvik_read_instr_rem_int,
[DOP_AND_INT] = dalvik_read_instr_and_int,
[DOP_OR_INT] = dalvik_read_instr_or_int,
[DOP_XOR_INT] = dalvik_read_instr_xor_int,
[DOP_ADD_INT_2ADDR] = dalvik_read_instr_add_int_2addr,
[DOP_MUL_INT_2ADDR] = dalvik_read_instr_mul_int_2addr,
[DOP_DIV_INT_2ADDR] = dalvik_read_instr_div_int_2addr,
[DOP_REM_INT_2ADDR] = dalvik_read_instr_rem_int_2addr,
[DOP_AND_INT_2ADDR] = dalvik_read_instr_and_int_2addr,
[DOP_OR_INT_2ADDR] = dalvik_read_instr_or_int_2addr,
[DOP_XOR_INT_2ADDR] = dalvik_read_instr_xor_int_2addr,
[DOP_ADD_INT_LIT16] = dalvik_read_instr_add_int_lit16,
[DOP_RSUB_INT] = dalvik_read_instr_rsub_int,
[DOP_MUL_INT_LIT16] = dalvik_read_instr_mul_int_lit16,
[DOP_DIV_INT_LIT16] = dalvik_read_instr_div_int_lit16,
[DOP_REM_INT_LIT16] = dalvik_read_instr_rem_int_lit16,
[DOP_AND_INT_LIT16] = dalvik_read_instr_and_int_lit16,
[DOP_OR_INT_LIT16] = dalvik_read_instr_or_int_lit16,
[DOP_XOR_INT_LIT16] = dalvik_read_instr_xor_int_lit16,
[DOP_ADD_INT_LIT8] = dalvik_read_instr_add_int_lit8,
[DOP_RSUB_INT_LIT8] = dalvik_read_instr_rsub_int_lit8,
[DOP_MUL_INT_LIT8] = dalvik_read_instr_mul_int_lit8,
[DOP_DIV_INT_LIT8] = dalvik_read_instr_div_int_lit8,
[DOP_REM_INT_LIT8] = dalvik_read_instr_rem_int_lit8,
[DOP_AND_INT_LIT8] = dalvik_read_instr_and_int_lit8,
[DOP_OR_INT_LIT8] = dalvik_read_instr_or_int_lit8,
[DOP_XOR_INT_LIT8] = dalvik_read_instr_xor_int_lit8
};
id = dalvik_guess_next_instruction(data, *pos, len);
if (id != DOP_COUNT) (*pos)++;
if (id == DOP_COUNT) result = NULL;
else result = decodings[id](data, pos, len, addr, proc);
return result;
}
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