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/* Chrysalide - Outil d'analyse de fichiers binaires
* known.c - équivalent Python du fichier "arch/operands/known.h"
*
* Copyright (C) 2020-2025 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 "known.h"
#include <assert.h>
#include <pygobject.h>
#include <arch/operands/known-int.h>
#include "immediate.h"
#include "../../access.h"
#include "../../helpers.h"
/* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */
CREATE_DYN_CONSTRUCTOR(known_immediate_operand, G_TYPE_KNOWN_IMMEDIATE_OPERAND);
/* Initialise une instance sur la base du dérivé de GObject. */
static int py_known_immediate_operand_init(PyObject *, PyObject *, PyObject *);
/* ---------------------------------------------------------------------------------- */
/* GLUE POUR CREATION DEPUIS PYTHON */
/* ---------------------------------------------------------------------------------- */
/******************************************************************************
* *
* Paramètres : self = objet à initialiser (théoriquement). *
* args = arguments fournis à l'appel. *
* kwds = arguments de type key=val fournis. *
* *
* Description : Initialise une instance sur la base du dérivé de GObject. *
* *
* Retour : 0. *
* *
* Remarques : - *
* *
******************************************************************************/
static int py_known_immediate_operand_init(PyObject *self, PyObject *args, PyObject *kwds)
{
GImmediateOperand *imm; /* Opérande à remplacer */
const char *alt; /* Impression alternative */
int ret; /* Bilan de lecture des args. */
GKnownImmediateOperand *operand; /* Opérande natif à manipuler */
#define KNOWN_IMMEDIATE_OPERAND_DOC \
"The KnownImmediateOperand provides replacement of" \
" pychrysalide.arch.operands.ImmediateOperand instances by an alternative" \
" text.\n" \
"\n" \
"Instances can be created using the following constructor:\n" \
"\n" \
" KnownImmediateOperand(imm, alt)" \
"\n" \
"Where *imm* is an operand of type pychrysalide.arch.operands.ImmediateOperand" \
" and *alt* is a string providing the text to be rendered at object" \
" display."
/* Récupération des paramètres */
ret = PyArg_ParseTuple(args, "O&s", convert_to_immediate_operand, &imm, &alt);
if (!ret) return -1;
/* Initialisation d'un objet GLib */
ret = forward_pygobjet_init(self);
if (ret == -1) return -1;
/* Eléments de base */
operand = G_KNOWN_IMMEDIATE_OPERAND(pygobject_get(self));
if (!g_known_immediate_operand_create(operand, imm, alt))
return -1;
return 0;
}
/* ---------------------------------------------------------------------------------- */
/* DEFINITION D'UN IMMEDIAT CONNU */
/* ---------------------------------------------------------------------------------- */
/******************************************************************************
* *
* Paramètres : - *
* *
* Description : Fournit un accès à une définition de type à diffuser. *
* *
* Retour : Définition d'objet pour Python. *
* *
* Remarques : - *
* *
******************************************************************************/
PyTypeObject *get_python_known_immediate_operand_type(void)
{
static PyMethodDef py_known_immediate_operand_methods[] = {
{ NULL }
};
static PyGetSetDef py_known_immediate_operand_getseters[] = {
{ NULL }
};
static PyTypeObject py_known_immediate_operand_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "pychrysalide.arch.operands.KnownImmediateOperand",
.tp_basicsize = sizeof(PyGObject),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_doc = KNOWN_IMMEDIATE_OPERAND_DOC,
.tp_methods = py_known_immediate_operand_methods,
.tp_getset = py_known_immediate_operand_getseters,
.tp_init = py_known_immediate_operand_init,
.tp_new = py_known_immediate_operand_new,
};
return &py_known_immediate_operand_type;
}
/******************************************************************************
* *
* Paramètres : module = module dont la définition est à compléter. *
* *
* Description : Prend en charge l'objet '....KnownImmediateOperand'. *
* *
* Retour : Bilan de l'opération. *
* *
* Remarques : - *
* *
******************************************************************************/
bool ensure_python_known_immediate_operand_is_registered(void)
{
PyTypeObject *type; /* Type 'KnownImmediateOperand'*/
PyObject *module; /* Module à recompléter */
PyObject *dict; /* Dictionnaire du module */
type = get_python_known_immediate_operand_type();
if (!PyType_HasFeature(type, Py_TPFLAGS_READY))
{
module = get_access_to_python_module("pychrysalide.arch.operands");
dict = PyModule_GetDict(module);
if (!ensure_python_immediate_operand_is_registered())
return false;
if (!register_class_for_pygobject(dict, G_TYPE_KNOWN_IMMEDIATE_OPERAND, type))
return false;
}
return true;
}
/******************************************************************************
* *
* Paramètres : arg = argument quelconque à tenter de convertir. *
* dst = destination des valeurs récupérées en cas de succès. *
* *
* Description : Tente de convertir en remplaçant d'opérande d'immédiat. *
* *
* Retour : Bilan de l'opération, voire indications supplémentaires. *
* *
* Remarques : - *
* *
******************************************************************************/
int convert_to_known_immediate_operand(PyObject *arg, void *dst)
{
int result; /* Bilan à retourner */
result = PyObject_IsInstance(arg, (PyObject *)get_python_known_immediate_operand_type());
switch (result)
{
case -1:
/* L'exception est déjà fixée par Python */
result = 0;
break;
case 0:
PyErr_SetString(PyExc_TypeError, "unable to convert the provided argument to known immediate operand");
break;
case 1:
*((GKnownImmediateOperand **)dst) = G_KNOWN_IMMEDIATE_OPERAND(pygobject_get(arg));
break;
default:
assert(false);
break;
}
return result;
}
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