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/* Chrysalide - Outil d'analyse de fichiers binaires
* targetable.c - prototypes pour l'équivalent Python du fichier "arch/operands/targetable.c"
*
* Copyright (C) 2020 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "targetable.h"
#include <pygobject.h>
#include <arch/operands/targetable.h>
#include "../processor.h"
#include "../vmpa.h"
#include "../../access.h"
#include "../../helpers.h"
#include "../../format/format.h"
#define TARGETABLE_OPERAND_DOC \
"The TargetableOperand interface depicts operands which can drive to" \
" another location.\n" \
"\n" \
"By instance, an immediate value can target a given address into" \
" some function code."
/* Obtient l'adresse de la cible visée par un opérande. */
static PyObject *py_targetable_operand_get_addr(PyObject *, PyObject *);
/******************************************************************************
* *
* Paramètres : self = contenu binaire à manipuler. *
* args = arguments accompagnant l'appel. *
* *
* Description : Obtient l'adresse de la cible visée par un opérande. *
* *
* Retour : Localisation de la cible ou None. *
* *
* Remarques : - *
* *
******************************************************************************/
static PyObject *py_targetable_operand_get_addr(PyObject *self, PyObject *args)
{
PyObject *result; /* Instance à retourner */
vmpa2t *src; /* Version native d'adresse */
GBinFormat *format; /* Instance GLib du format */
GArchProcessor *proc; /* Instance GLib de l'archi. */
int ret; /* Bilan de lecture des args. */
GTargetableOperand *operand; /* Instance à manipuler */
vmpa2t addr; /* Localisation à cibler */
bool defined; /* Cible définie ? */
#define TARGETABLE_OPERAND_GET_ADDR_METHOD PYTHON_METHOD_DEF \
( \
get_addr, "$self, src, format, proc", \
METH_VARARGS, py_targetable_operand, \
"Compute a target address from an operand." \
"\n" \
"The following arguments are required:\n" \
"* src is the location of the instruction owning the operand, as a" \
" pychrysalide.arch.vmpa instance.\n" \
"* format is a pychrysalide.format.BinFormat instance, providing" \
" all needed information.\n" \
"* proc is a pychrysalide.arch.ArchProcessor instance, providing" \
" all needed information too.\n" \
"\n" \
"The result is a pychrysalide.arch.vmpa address or None." \
)
ret = PyArg_ParseTuple(args, "O&O&O&",
convert_any_to_vmpa, &src,
convert_to_binary_format, &format,
convert_to_arch_processor, &proc);
if (!ret) return NULL;
operand = G_TARGETABLE_OPERAND(pygobject_get(self));
defined = g_targetable_operand_get_addr(operand, src, format, proc, &addr);
if (defined)
result = build_from_internal_vmpa(&addr);
else
{
result = Py_None;
Py_INCREF(result);
}
clean_vmpa_arg(src);
return result;
}
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Fournit un accès à une définition de type à diffuser. *
* *
* Retour : Définition d'objet pour Python. *
* *
* Remarques : - *
* *
******************************************************************************/
PyTypeObject *get_python_targetable_operand_type(void)
{
static PyMethodDef py_targetable_operand_methods[] = {
TARGETABLE_OPERAND_GET_ADDR_METHOD,
{ NULL }
};
static PyGetSetDef py_targetable_operand_getseters[] = {
{ NULL }
};
static PyTypeObject py_targetable_operand_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pychrysalide.arch.operands.TargetableOperand",
.tp_basicsize = sizeof(PyObject),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_doc = TARGETABLE_OPERAND_DOC,
.tp_methods = py_targetable_operand_methods,
.tp_getset = py_targetable_operand_getseters
};
return &py_targetable_operand_type;
}
/******************************************************************************
* *
* Paramètres : module = module dont la définition est à compléter. *
* *
* Description : Prend en charge l'objet 'pychrysalide.....TargetableOperand'.*
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool ensure_python_targetable_operand_is_registered(void)
{
PyTypeObject *type; /* Type 'TargetableOperand' */
PyObject *module; /* Module à recompléter */
PyObject *dict; /* Dictionnaire du module */
type = get_python_targetable_operand_type();
if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
{
module = get_access_to_python_module("pychrysalide.arch.operands");
dict = PyModule_GetDict(module);
if (!register_interface_for_pygobject(dict, G_TYPE_TARGETABLE_OPERAND, type))
return false;
}
return true;
}
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