/* Chrysalide - Outil d'analyse de fichiers binaires * undefined.c - équivalent Python du fichier "arch/instructions/undefined.h" * * Copyright (C) 2019-2025 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 "undefined.h" #include #include #include "constants.h" #include "../instruction.h" #include "../../access.h" #include "../../helpers.h" /* ------------------------ GLUE POUR CREATION DEPUIS PYTHON ------------------------ */ CREATE_DYN_CONSTRUCTOR(undefined_instruction, G_TYPE_UNDEFINED_INSTRUCTION); /* Initialise une instance sur la base du dérivé de GObject. */ static int py_undefined_instruction_init(PyObject *, PyObject *, PyObject *); /* ------------------------ FONCTIONNALITES DE L'INSTRUCTION ------------------------ */ /* Indique le type de conséquences réél de l'instruction. */ static PyObject *py_undefined_instruction_get_behavior(PyObject *, void *); /* ---------------------------------------------------------------------------------- */ /* 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_undefined_instruction_init(PyObject *self, PyObject *args, PyObject *kwds) { InstrExpectedBehavior behavior; /* Conséquence pour l'instruct°*/ int ret; /* Bilan de lecture des args. */ GUndefinedInstruction *instr; /* Instruction à manipuler */ #define UNDEFINED_INSTRUCTION_DOC \ "UndefinedInstruction represents all kinds of instructions which are" \ " officially not part of a runnable instruction set.\n" \ "\n" \ "Instances can be created using the following constructor:\n" \ "\n" \ " UndefinedInstruction(behavior)" \ "\n" \ "Where behavior is a" \ " pychrysalide.arch.instructions.UndefinedInstruction.ExpectedBehavior" \ " constant describing the state of the CPU once the instruction is run." /* Récupération des paramètres */ ret = PyArg_ParseTuple(args, "O&", convert_to_undefined_expected_behavior, &behavior); if (!ret) return -1; /* Initialisation d'un objet GLib */ ret = forward_pygobjet_init(self); if (ret == -1) return -1; /* Eléments de base */ instr = G_UNDEFINED_INSTRUCTION(pygobject_get(self)); if (!g_undefined_instruction_create(instr, behavior)) return -1; return 0; } /* ---------------------------------------------------------------------------------- */ /* FONCTIONNALITES DE L'INSTRUCTION */ /* ---------------------------------------------------------------------------------- */ /****************************************************************************** * * * Paramètres : self = classe représentant une instruction. * * closure = adresse non utilisée ici. * * * * Description : Indique le type de conséquences réél de l'instruction. * * * * Retour : Etat réel du CPU après l'exécution de l'instruction. * * * * Remarques : - * * * ******************************************************************************/ static PyObject *py_undefined_instruction_get_behavior(PyObject *self, void *closure) { PyObject *result; /* Conversion à retourner */ GUndefinedInstruction *instr; /* Version native */ InstrExpectedBehavior behavior; /* Comportement attendu */ #define UNDEFINED_INSTRUCTION_BEHAVIOR_ATTRIB PYTHON_GET_DEF_FULL \ ( \ behavior, py_undefined_instruction, \ "Consequence carried by the undefined instruction.\n" \ "\n" \ "The result is provided as a" \ " pychrysalide.arch.instructions.UndefinedInstruction.ExpectedBehavior" \ " constant." \ ) instr = G_UNDEFINED_INSTRUCTION(pygobject_get(self)); behavior = g_undefined_instruction_get_behavior(instr); result = cast_with_constants_group_from_type(get_python_undefined_instruction_type(), "ExpectedBehavior", behavior); return result; } /****************************************************************************** * * * Paramètres : - * * * * Description : Fournit un accès à une définition de type à diffuser. * * * * Retour : Définition d'objet pour Python. * * * * Remarques : - * * * ******************************************************************************/ PyTypeObject *get_python_undefined_instruction_type(void) { static PyMethodDef py_undefined_instruction_methods[] = { { NULL } }; static PyGetSetDef py_undefined_instruction_getseters[] = { UNDEFINED_INSTRUCTION_BEHAVIOR_ATTRIB, { NULL } }; static PyTypeObject py_undefined_instruction_type = { PyVarObject_HEAD_INIT(NULL, 0) .tp_name = "pychrysalide.arch.instructions.UndefinedInstruction", .tp_basicsize = sizeof(PyGObject), .tp_flags = Py_TPFLAGS_DEFAULT, .tp_doc = UNDEFINED_INSTRUCTION_DOC, .tp_methods = py_undefined_instruction_methods, .tp_getset = py_undefined_instruction_getseters, .tp_init = py_undefined_instruction_init, .tp_new = py_undefined_instruction_new, }; return &py_undefined_instruction_type; } /****************************************************************************** * * * Paramètres : module = module dont la définition est à compléter. * * * * Description : Prend en charge l'objet '....UndefinedInstruction'. * * * * Retour : Bilan de l'opération. * * * * Remarques : - * * * ******************************************************************************/ bool ensure_python_undefined_instruction_is_registered(void) { PyTypeObject *type; /* Type 'UndefinedInstruction' */ PyObject *module; /* Module à recompléter */ PyObject *dict; /* Dictionnaire du module */ type = get_python_undefined_instruction_type(); if (!PyType_HasFeature(type, Py_TPFLAGS_READY)) { module = get_access_to_python_module("pychrysalide.arch.instructions"); dict = PyModule_GetDict(module); if (!ensure_python_arch_instruction_is_registered()) return false; if (!register_class_for_pygobject(dict, G_TYPE_UNDEFINED_INSTRUCTION, type)) return false; if (!define_undefined_instruction_constants(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 instruction non définie. * * * * Retour : Bilan de l'opération, voire indications supplémentaires. * * * * Remarques : - * * * ******************************************************************************/ int convert_to_undefined_instruction(PyObject *arg, void *dst) { int result; /* Bilan à retourner */ result = PyObject_IsInstance(arg, (PyObject *)get_python_undefined_instruction_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 undefined instruction"); break; case 1: *((GUndefinedInstruction **)dst) = G_UNDEFINED_INSTRUCTION(pygobject_get(arg)); break; default: assert(false); break; } return result; }