1 /* Python interface to architecture
3 Copyright (C) 2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "arch-utils.h"
24 #include "python-internal.h"
26 typedef struct arch_object_type_object {
28 struct gdbarch *gdbarch;
31 static struct gdbarch_data *arch_object_data = NULL;
33 static PyTypeObject arch_object_type
34 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("arch_object");
36 /* Associates an arch_object with GDBARCH as gdbarch_data via the gdbarch
37 post init registration mechanism (gdbarch_data_register_post_init). */
40 arch_object_data_init (struct gdbarch *gdbarch)
42 arch_object *arch_obj = PyObject_New (arch_object, &arch_object_type);
47 arch_obj->gdbarch = gdbarch;
49 return (void *) arch_obj;
52 /* Returns the struct gdbarch value corresponding to the given Python
53 architecture object OBJ. */
56 arch_object_to_gdbarch (PyObject *obj)
58 arch_object *py_arch = (arch_object *) obj;
60 return py_arch->gdbarch;
63 /* Returns the Python architecture object corresponding to GDBARCH.
64 Returns a new reference to the arch_object associated as data with
68 gdbarch_to_arch_object (struct gdbarch *gdbarch)
70 PyObject *new_ref = (PyObject *) gdbarch_data (gdbarch, arch_object_data);
72 /* new_ref could be NULL if registration of arch_object with GDBARCH failed
73 in arch_object_data_init. */
79 /* Implementation of gdb.Architecture.name (self) -> String.
80 Returns the name of the architecture as a string value. */
83 archpy_name (PyObject *self, PyObject *args)
85 struct gdbarch *gdbarch = arch_object_to_gdbarch (self);
86 const char *name = (gdbarch_bfd_arch_info (gdbarch))->printable_name;
87 PyObject *py_name = PyString_FromString (name);
93 gdb.Architecture.disassemble (self, start_pc [, end_pc [,count]]) -> List.
94 Returns a list of instructions in a memory address range. Each instruction
95 in the list is a Python dict object.
99 archpy_disassemble (PyObject *self, PyObject *args, PyObject *kw)
101 static char *keywords[] = { "start_pc", "end_pc", "count", NULL };
102 CORE_ADDR start, end = 0;
104 gdb_py_ulongest start_temp;
106 PyObject *result_list, *end_obj = NULL, *count_obj = NULL;
107 struct gdbarch *gdbarch = arch_object_to_gdbarch (self);
109 if (!PyArg_ParseTupleAndKeywords (args, kw, GDB_PY_LLU_ARG "|OO", keywords,
110 &start_temp, &end_obj, &count_obj))
116 if (PyLong_Check (end_obj))
117 end = PyLong_AsUnsignedLongLong (end_obj);
118 else if (PyInt_Check (end_obj))
119 /* If the end_pc value is specified without a trailing 'L', end_obj will
120 be an integer and not a long integer. */
121 end = PyInt_AsLong (end_obj);
125 Py_XDECREF (count_obj);
126 PyErr_SetString (PyExc_TypeError,
127 _("Argument 'end_pc' should be a (long) integer."));
135 Py_XDECREF (count_obj);
136 PyErr_SetString (PyExc_ValueError,
137 _("Argument 'end_pc' should be greater than or "
138 "equal to the argument 'start_pc'."));
145 count = PyInt_AsLong (count_obj);
146 if (PyErr_Occurred () || count < 0)
148 Py_DECREF (count_obj);
149 Py_XDECREF (end_obj);
150 PyErr_SetString (PyExc_TypeError,
151 _("Argument 'count' should be an non-negative "
158 result_list = PyList_New (0);
159 if (result_list == NULL)
162 for (pc = start, i = 0;
163 /* All args are specified. */
164 (end_obj && count_obj && pc <= end && i < count)
165 /* end_pc is specified, but no count. */
166 || (end_obj && count_obj == NULL && pc <= end)
167 /* end_pc is not specified, but a count is. */
168 || (end_obj == NULL && count_obj && i < count)
169 /* Both end_pc and count are not specified. */
170 || (end_obj == NULL && count_obj == NULL && pc == start);)
174 struct ui_file *memfile = mem_fileopen ();
175 PyObject *insn_dict = PyDict_New ();
176 volatile struct gdb_exception except;
178 if (insn_dict == NULL)
180 Py_DECREF (result_list);
181 ui_file_delete (memfile);
185 if (PyList_Append (result_list, insn_dict))
187 Py_DECREF (result_list);
188 Py_DECREF (insn_dict);
189 ui_file_delete (memfile);
191 return NULL; /* PyList_Append Sets the exception. */
194 TRY_CATCH (except, RETURN_MASK_ALL)
196 insn_len = gdb_print_insn (gdbarch, pc, memfile, NULL);
198 if (except.reason < 0)
200 Py_DECREF (result_list);
201 ui_file_delete (memfile);
203 gdbpy_convert_exception (except);
207 as = ui_file_xstrdup (memfile, NULL);
208 if (PyDict_SetItemString (insn_dict, "addr",
209 gdb_py_long_from_ulongest (pc))
210 || PyDict_SetItemString (insn_dict, "asm",
211 PyString_FromString (*as ? as : "<unknown>"))
212 || PyDict_SetItemString (insn_dict, "length",
213 PyInt_FromLong (insn_len)))
215 Py_DECREF (result_list);
217 ui_file_delete (memfile);
225 ui_file_delete (memfile);
232 /* Initializes the Architecture class in the gdb module. */
235 gdbpy_initialize_arch (void)
237 arch_object_data = gdbarch_data_register_post_init (arch_object_data_init);
238 arch_object_type.tp_new = PyType_GenericNew;
239 if (PyType_Ready (&arch_object_type) < 0)
242 Py_INCREF (&arch_object_type);
243 PyModule_AddObject (gdb_module, "Architecture",
244 (PyObject *) &arch_object_type);
247 static PyMethodDef arch_object_methods [] = {
248 { "name", archpy_name, METH_NOARGS,
249 "name () -> String.\n\
250 Return the name of the architecture as a string value." },
251 { "disassemble", (PyCFunction) archpy_disassemble,
252 METH_VARARGS | METH_KEYWORDS,
253 "disassemble (start_pc [, end_pc [, count]]) -> List.\n\
254 Return a list of at most COUNT disassembled instructions from START_PC to\n\
256 {NULL} /* Sentinel */
259 static PyTypeObject arch_object_type = {
260 PyVarObject_HEAD_INIT (NULL, 0)
261 "gdb.Architecture", /* tp_name */
262 sizeof (arch_object), /* tp_basicsize */
270 0, /* tp_as_number */
271 0, /* tp_as_sequence */
272 0, /* tp_as_mapping */
278 0, /* tp_as_buffer */
279 Py_TPFLAGS_DEFAULT, /* tp_flags */
280 "GDB architecture object", /* tp_doc */
283 0, /* tp_richcompare */
284 0, /* tp_weaklistoffset */
287 arch_object_methods, /* tp_methods */
292 0, /* tp_descr_get */
293 0, /* tp_descr_set */
294 0, /* tp_dictoffset */