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d57a3c85 TJB |
1 | /* General python/gdb code |
2 | ||
61baf725 | 3 | Copyright (C) 2008-2017 Free Software Foundation, Inc. |
d57a3c85 TJB |
4 | |
5 | This file is part of GDB. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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/>. */ | |
19 | ||
20 | #include "defs.h" | |
d452c4bc | 21 | #include "arch-utils.h" |
d57a3c85 TJB |
22 | #include "command.h" |
23 | #include "ui-out.h" | |
24 | #include "cli/cli-script.h" | |
25 | #include "gdbcmd.h" | |
fa33c3cd | 26 | #include "progspace.h" |
89c73ade | 27 | #include "objfiles.h" |
d452c4bc UW |
28 | #include "value.h" |
29 | #include "language.h" | |
ca5c20b6 | 30 | #include "event-loop.h" |
4a532131 | 31 | #include "serial.h" |
3ab1ec27 | 32 | #include "readline/tilde.h" |
7371cf6d | 33 | #include "python.h" |
6dddc817 | 34 | #include "extension-priv.h" |
529480d0 | 35 | #include "cli/cli-utils.h" |
d57a3c85 | 36 | #include <ctype.h> |
f00aae0f | 37 | #include "location.h" |
6eddd09a | 38 | #include "ser-event.h" |
d57a3c85 | 39 | |
80b6e756 PM |
40 | /* Declared constants and enum for python stack printing. */ |
41 | static const char python_excp_none[] = "none"; | |
42 | static const char python_excp_full[] = "full"; | |
43 | static const char python_excp_message[] = "message"; | |
44 | ||
45 | /* "set python print-stack" choices. */ | |
40478521 | 46 | static const char *const python_excp_enums[] = |
80b6e756 PM |
47 | { |
48 | python_excp_none, | |
49 | python_excp_full, | |
50 | python_excp_message, | |
51 | NULL | |
52 | }; | |
53 | ||
54 | /* The exception printing variable. 'full' if we want to print the | |
55 | error message and stack, 'none' if we want to print nothing, and | |
56 | 'message' if we only want to print the error message. 'message' is | |
57 | the default. */ | |
58 | static const char *gdbpy_should_print_stack = python_excp_message; | |
d57a3c85 | 59 | |
6dddc817 DE |
60 | #ifdef HAVE_PYTHON |
61 | /* Forward decls, these are defined later. */ | |
e36122e9 TT |
62 | extern const struct extension_language_script_ops python_extension_script_ops; |
63 | extern const struct extension_language_ops python_extension_ops; | |
6dddc817 DE |
64 | #endif |
65 | ||
66 | /* The main struct describing GDB's interface to the Python | |
67 | extension language. */ | |
68 | const struct extension_language_defn extension_language_python = | |
69 | { | |
70 | EXT_LANG_PYTHON, | |
71 | "python", | |
72 | "Python", | |
73 | ||
74 | ".py", | |
75 | "-gdb.py", | |
76 | ||
77 | python_control, | |
78 | ||
79 | #ifdef HAVE_PYTHON | |
80 | &python_extension_script_ops, | |
81 | &python_extension_ops | |
82 | #else | |
83 | NULL, | |
84 | NULL | |
85 | #endif | |
86 | }; | |
87 | \f | |
d57a3c85 TJB |
88 | #ifdef HAVE_PYTHON |
89 | ||
d57a3c85 TJB |
90 | #include "cli/cli-decode.h" |
91 | #include "charset.h" | |
92 | #include "top.h" | |
cb2e07a6 | 93 | #include "solib.h" |
d57a3c85 | 94 | #include "python-internal.h" |
cb2e07a6 PM |
95 | #include "linespec.h" |
96 | #include "source.h" | |
d57a3c85 TJB |
97 | #include "version.h" |
98 | #include "target.h" | |
99 | #include "gdbthread.h" | |
b4a14fd0 | 100 | #include "interps.h" |
9a27f2c6 | 101 | #include "event-top.h" |
ff3724f5 | 102 | #include "py-ref.h" |
d57a3c85 | 103 | |
999633ed TT |
104 | /* True if Python has been successfully initialized, false |
105 | otherwise. */ | |
106 | ||
107 | int gdb_python_initialized; | |
108 | ||
bcabf420 | 109 | extern PyMethodDef python_GdbMethods[]; |
d57a3c85 | 110 | |
9a27f2c6 | 111 | #ifdef IS_PY3K |
bcabf420 | 112 | extern struct PyModuleDef python_GdbModuleDef; |
9a27f2c6 PK |
113 | #endif |
114 | ||
d57a3c85 | 115 | PyObject *gdb_module; |
b9516fa1 | 116 | PyObject *gdb_python_module; |
d57a3c85 | 117 | |
a6bac58e TT |
118 | /* Some string constants we may wish to use. */ |
119 | PyObject *gdbpy_to_string_cst; | |
120 | PyObject *gdbpy_children_cst; | |
121 | PyObject *gdbpy_display_hint_cst; | |
d8906c6f | 122 | PyObject *gdbpy_doc_cst; |
967cf477 | 123 | PyObject *gdbpy_enabled_cst; |
fb6a3ed3 | 124 | PyObject *gdbpy_value_cst; |
d8906c6f | 125 | |
07ca107c DE |
126 | /* The GdbError exception. */ |
127 | PyObject *gdbpy_gdberror_exc; | |
d452c4bc | 128 | |
621c8364 TT |
129 | /* The `gdb.error' base class. */ |
130 | PyObject *gdbpy_gdb_error; | |
131 | ||
132 | /* The `gdb.MemoryError' exception. */ | |
133 | PyObject *gdbpy_gdb_memory_error; | |
134 | ||
6dddc817 DE |
135 | static script_sourcer_func gdbpy_source_script; |
136 | static objfile_script_sourcer_func gdbpy_source_objfile_script; | |
9f050062 | 137 | static objfile_script_executor_func gdbpy_execute_objfile_script; |
6dddc817 DE |
138 | static void gdbpy_finish_initialization |
139 | (const struct extension_language_defn *); | |
140 | static int gdbpy_initialized (const struct extension_language_defn *); | |
141 | static void gdbpy_eval_from_control_command | |
142 | (const struct extension_language_defn *, struct command_line *cmd); | |
143 | static void gdbpy_start_type_printers (const struct extension_language_defn *, | |
144 | struct ext_lang_type_printers *); | |
145 | static enum ext_lang_rc gdbpy_apply_type_printers | |
146 | (const struct extension_language_defn *, | |
147 | const struct ext_lang_type_printers *, struct type *, char **); | |
148 | static void gdbpy_free_type_printers (const struct extension_language_defn *, | |
149 | struct ext_lang_type_printers *); | |
6dddc817 DE |
150 | static void gdbpy_set_quit_flag (const struct extension_language_defn *); |
151 | static int gdbpy_check_quit_flag (const struct extension_language_defn *); | |
152 | static enum ext_lang_rc gdbpy_before_prompt_hook | |
153 | (const struct extension_language_defn *, const char *current_gdb_prompt); | |
154 | ||
155 | /* The interface between gdb proper and loading of python scripts. */ | |
156 | ||
e36122e9 | 157 | const struct extension_language_script_ops python_extension_script_ops = |
6dddc817 DE |
158 | { |
159 | gdbpy_source_script, | |
160 | gdbpy_source_objfile_script, | |
9f050062 | 161 | gdbpy_execute_objfile_script, |
6dddc817 DE |
162 | gdbpy_auto_load_enabled |
163 | }; | |
164 | ||
165 | /* The interface between gdb proper and python extensions. */ | |
166 | ||
e36122e9 | 167 | const struct extension_language_ops python_extension_ops = |
6dddc817 DE |
168 | { |
169 | gdbpy_finish_initialization, | |
170 | gdbpy_initialized, | |
171 | ||
172 | gdbpy_eval_from_control_command, | |
173 | ||
174 | gdbpy_start_type_printers, | |
175 | gdbpy_apply_type_printers, | |
176 | gdbpy_free_type_printers, | |
177 | ||
178 | gdbpy_apply_val_pretty_printer, | |
179 | ||
180 | gdbpy_apply_frame_filter, | |
181 | ||
182 | gdbpy_preserve_values, | |
183 | ||
184 | gdbpy_breakpoint_has_cond, | |
185 | gdbpy_breakpoint_cond_says_stop, | |
186 | ||
6dddc817 DE |
187 | gdbpy_set_quit_flag, |
188 | gdbpy_check_quit_flag, | |
189 | ||
883964a7 SC |
190 | gdbpy_before_prompt_hook, |
191 | ||
192 | gdbpy_clone_xmethod_worker_data, | |
193 | gdbpy_free_xmethod_worker_data, | |
194 | gdbpy_get_matching_xmethod_workers, | |
195 | gdbpy_get_xmethod_arg_types, | |
2ce1cdbf | 196 | gdbpy_get_xmethod_result_type, |
883964a7 | 197 | gdbpy_invoke_xmethod |
6dddc817 DE |
198 | }; |
199 | ||
d452c4bc UW |
200 | /* Architecture and language to be used in callbacks from |
201 | the Python interpreter. */ | |
202 | struct gdbarch *python_gdbarch; | |
203 | const struct language_defn *python_language; | |
204 | ||
4ecee2c4 TT |
205 | gdbpy_enter::gdbpy_enter (struct gdbarch *gdbarch, |
206 | const struct language_defn *language) | |
207 | : m_gdbarch (python_gdbarch), | |
208 | m_language (python_language) | |
d452c4bc | 209 | { |
4ecee2c4 TT |
210 | /* We should not ever enter Python unless initialized. */ |
211 | if (!gdb_python_initialized) | |
212 | error (_("Python not initialized")); | |
d452c4bc | 213 | |
4ecee2c4 | 214 | m_previous_active = set_active_ext_lang (&extension_language_python); |
d59b6f6c | 215 | |
4ecee2c4 TT |
216 | m_state = PyGILState_Ensure (); |
217 | ||
218 | python_gdbarch = gdbarch; | |
219 | python_language = language; | |
220 | ||
221 | /* Save it and ensure ! PyErr_Occurred () afterwards. */ | |
222 | PyErr_Fetch (&m_error_type, &m_error_value, &m_error_traceback); | |
223 | } | |
224 | ||
225 | gdbpy_enter::~gdbpy_enter () | |
226 | { | |
8dc78533 JK |
227 | /* Leftover Python error is forbidden by Python Exception Handling. */ |
228 | if (PyErr_Occurred ()) | |
229 | { | |
230 | /* This order is similar to the one calling error afterwards. */ | |
231 | gdbpy_print_stack (); | |
232 | warning (_("internal error: Unhandled Python exception")); | |
233 | } | |
234 | ||
4ecee2c4 | 235 | PyErr_Restore (m_error_type, m_error_value, m_error_traceback); |
8dc78533 | 236 | |
4ecee2c4 TT |
237 | PyGILState_Release (m_state); |
238 | python_gdbarch = m_gdbarch; | |
239 | python_language = m_language; | |
6dddc817 | 240 | |
4ecee2c4 TT |
241 | restore_active_ext_lang (m_previous_active); |
242 | } | |
243 | ||
522002f9 TT |
244 | /* Set the quit flag. */ |
245 | ||
6dddc817 DE |
246 | static void |
247 | gdbpy_set_quit_flag (const struct extension_language_defn *extlang) | |
522002f9 TT |
248 | { |
249 | PyErr_SetInterrupt (); | |
250 | } | |
251 | ||
252 | /* Return true if the quit flag has been set, false otherwise. */ | |
253 | ||
6dddc817 DE |
254 | static int |
255 | gdbpy_check_quit_flag (const struct extension_language_defn *extlang) | |
522002f9 TT |
256 | { |
257 | return PyOS_InterruptOccurred (); | |
258 | } | |
259 | ||
8315665e YPK |
260 | /* Evaluate a Python command like PyRun_SimpleString, but uses |
261 | Py_single_input which prints the result of expressions, and does | |
262 | not automatically print the stack on errors. */ | |
263 | ||
264 | static int | |
265 | eval_python_command (const char *command) | |
266 | { | |
267 | PyObject *m, *d, *v; | |
268 | ||
269 | m = PyImport_AddModule ("__main__"); | |
270 | if (m == NULL) | |
271 | return -1; | |
272 | ||
273 | d = PyModule_GetDict (m); | |
274 | if (d == NULL) | |
275 | return -1; | |
276 | v = PyRun_StringFlags (command, Py_single_input, d, d, NULL); | |
277 | if (v == NULL) | |
278 | return -1; | |
279 | ||
280 | Py_DECREF (v); | |
9a27f2c6 | 281 | #ifndef IS_PY3K |
8315665e YPK |
282 | if (Py_FlushLine ()) |
283 | PyErr_Clear (); | |
9a27f2c6 | 284 | #endif |
8315665e YPK |
285 | |
286 | return 0; | |
287 | } | |
288 | ||
289 | /* Implementation of the gdb "python-interactive" command. */ | |
290 | ||
291 | static void | |
292 | python_interactive_command (char *arg, int from_tty) | |
293 | { | |
f38d3ad1 | 294 | struct ui *ui = current_ui; |
8315665e YPK |
295 | int err; |
296 | ||
b7b633e9 | 297 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
8315665e | 298 | |
529480d0 | 299 | arg = skip_spaces (arg); |
8315665e | 300 | |
396a78b6 | 301 | gdbpy_enter enter_py (get_current_arch (), current_language); |
8315665e YPK |
302 | |
303 | if (arg && *arg) | |
304 | { | |
305 | int len = strlen (arg); | |
224c3ddb | 306 | char *script = (char *) xmalloc (len + 2); |
8315665e YPK |
307 | |
308 | strcpy (script, arg); | |
309 | script[len] = '\n'; | |
310 | script[len + 1] = '\0'; | |
311 | err = eval_python_command (script); | |
312 | xfree (script); | |
313 | } | |
314 | else | |
315 | { | |
f38d3ad1 | 316 | err = PyRun_InteractiveLoop (ui->instream, "<stdin>"); |
8315665e YPK |
317 | dont_repeat (); |
318 | } | |
319 | ||
320 | if (err) | |
321 | { | |
322 | gdbpy_print_stack (); | |
323 | error (_("Error while executing Python code.")); | |
324 | } | |
8315665e YPK |
325 | } |
326 | ||
4c63965b JK |
327 | /* A wrapper around PyRun_SimpleFile. FILE is the Python script to run |
328 | named FILENAME. | |
329 | ||
330 | On Windows hosts few users would build Python themselves (this is no | |
331 | trivial task on this platform), and thus use binaries built by | |
332 | someone else instead. There may happen situation where the Python | |
333 | library and GDB are using two different versions of the C runtime | |
334 | library. Python, being built with VC, would use one version of the | |
335 | msvcr DLL (Eg. msvcr100.dll), while MinGW uses msvcrt.dll. | |
336 | A FILE * from one runtime does not necessarily operate correctly in | |
7ed7d719 JB |
337 | the other runtime. |
338 | ||
4c63965b JK |
339 | To work around this potential issue, we create on Windows hosts the |
340 | FILE object using Python routines, thus making sure that it is | |
341 | compatible with the Python library. */ | |
7ed7d719 JB |
342 | |
343 | static void | |
4c63965b | 344 | python_run_simple_file (FILE *file, const char *filename) |
7ed7d719 | 345 | { |
4c63965b JK |
346 | #ifndef _WIN32 |
347 | ||
348 | PyRun_SimpleFile (file, filename); | |
349 | ||
350 | #else /* _WIN32 */ | |
351 | ||
3ab1ec27 | 352 | char *full_path; |
7ed7d719 JB |
353 | PyObject *python_file; |
354 | struct cleanup *cleanup; | |
355 | ||
3ab1ec27 PM |
356 | /* Because we have a string for a filename, and are using Python to |
357 | open the file, we need to expand any tilde in the path first. */ | |
358 | full_path = tilde_expand (filename); | |
359 | cleanup = make_cleanup (xfree, full_path); | |
360 | python_file = PyFile_FromString (full_path, "r"); | |
361 | if (! python_file) | |
362 | { | |
363 | do_cleanups (cleanup); | |
364 | gdbpy_print_stack (); | |
365 | error (_("Error while opening file: %s"), full_path); | |
366 | } | |
256458bc | 367 | |
7ed7d719 JB |
368 | make_cleanup_py_decref (python_file); |
369 | PyRun_SimpleFile (PyFile_AsFile (python_file), filename); | |
370 | do_cleanups (cleanup); | |
4c63965b JK |
371 | |
372 | #endif /* _WIN32 */ | |
7ed7d719 | 373 | } |
d452c4bc | 374 | |
d57a3c85 TJB |
375 | /* Given a command_line, return a command string suitable for passing |
376 | to Python. Lines in the string are separated by newlines. The | |
377 | return value is allocated using xmalloc and the caller is | |
378 | responsible for freeing it. */ | |
379 | ||
380 | static char * | |
381 | compute_python_string (struct command_line *l) | |
382 | { | |
383 | struct command_line *iter; | |
384 | char *script = NULL; | |
385 | int size = 0; | |
386 | int here; | |
387 | ||
388 | for (iter = l; iter; iter = iter->next) | |
389 | size += strlen (iter->line) + 1; | |
390 | ||
224c3ddb | 391 | script = (char *) xmalloc (size + 1); |
d57a3c85 TJB |
392 | here = 0; |
393 | for (iter = l; iter; iter = iter->next) | |
394 | { | |
395 | int len = strlen (iter->line); | |
d59b6f6c | 396 | |
d57a3c85 TJB |
397 | strcpy (&script[here], iter->line); |
398 | here += len; | |
399 | script[here++] = '\n'; | |
400 | } | |
401 | script[here] = '\0'; | |
402 | return script; | |
403 | } | |
404 | ||
405 | /* Take a command line structure representing a 'python' command, and | |
406 | evaluate its body using the Python interpreter. */ | |
407 | ||
6dddc817 DE |
408 | static void |
409 | gdbpy_eval_from_control_command (const struct extension_language_defn *extlang, | |
410 | struct command_line *cmd) | |
d57a3c85 | 411 | { |
12453b93 | 412 | int ret; |
d57a3c85 TJB |
413 | char *script; |
414 | ||
415 | if (cmd->body_count != 1) | |
416 | error (_("Invalid \"python\" block structure.")); | |
417 | ||
60e600ec | 418 | gdbpy_enter enter_py (get_current_arch (), current_language); |
ca30a762 | 419 | |
d57a3c85 | 420 | script = compute_python_string (cmd->body_list[0]); |
12453b93 | 421 | ret = PyRun_SimpleString (script); |
d57a3c85 | 422 | xfree (script); |
12453b93 | 423 | if (ret) |
80b6e756 | 424 | error (_("Error while executing Python code.")); |
d57a3c85 TJB |
425 | } |
426 | ||
427 | /* Implementation of the gdb "python" command. */ | |
428 | ||
429 | static void | |
430 | python_command (char *arg, int from_tty) | |
431 | { | |
a7785f8c | 432 | gdbpy_enter enter_py (get_current_arch (), current_language); |
b4a14fd0 | 433 | |
b7b633e9 | 434 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
b4a14fd0 | 435 | |
529480d0 | 436 | arg = skip_spaces (arg); |
d57a3c85 TJB |
437 | if (arg && *arg) |
438 | { | |
12453b93 | 439 | if (PyRun_SimpleString (arg)) |
80b6e756 | 440 | error (_("Error while executing Python code.")); |
d57a3c85 TJB |
441 | } |
442 | else | |
443 | { | |
444 | struct command_line *l = get_command_line (python_control, ""); | |
a7785f8c | 445 | struct cleanup *cleanup = make_cleanup_free_command_lines (&l); |
d59b6f6c | 446 | |
d57a3c85 | 447 | execute_control_command_untraced (l); |
a7785f8c | 448 | do_cleanups (cleanup); |
d57a3c85 TJB |
449 | } |
450 | } | |
451 | ||
452 | \f | |
453 | ||
454 | /* Transform a gdb parameters's value into a Python value. May return | |
455 | NULL (and set a Python exception) on error. Helper function for | |
456 | get_parameter. */ | |
d7b32ed3 PM |
457 | PyObject * |
458 | gdbpy_parameter_value (enum var_types type, void *var) | |
d57a3c85 | 459 | { |
d7b32ed3 | 460 | switch (type) |
d57a3c85 TJB |
461 | { |
462 | case var_string: | |
463 | case var_string_noescape: | |
464 | case var_optional_filename: | |
465 | case var_filename: | |
466 | case var_enum: | |
467 | { | |
d7b32ed3 | 468 | char *str = * (char **) var; |
d59b6f6c | 469 | |
d57a3c85 TJB |
470 | if (! str) |
471 | str = ""; | |
4ae6cc19 | 472 | return host_string_to_python_string (str); |
d57a3c85 TJB |
473 | } |
474 | ||
475 | case var_boolean: | |
476 | { | |
d7b32ed3 | 477 | if (* (int *) var) |
d57a3c85 TJB |
478 | Py_RETURN_TRUE; |
479 | else | |
480 | Py_RETURN_FALSE; | |
481 | } | |
482 | ||
483 | case var_auto_boolean: | |
484 | { | |
d7b32ed3 | 485 | enum auto_boolean ab = * (enum auto_boolean *) var; |
d59b6f6c | 486 | |
d57a3c85 TJB |
487 | if (ab == AUTO_BOOLEAN_TRUE) |
488 | Py_RETURN_TRUE; | |
489 | else if (ab == AUTO_BOOLEAN_FALSE) | |
490 | Py_RETURN_FALSE; | |
491 | else | |
492 | Py_RETURN_NONE; | |
493 | } | |
494 | ||
495 | case var_integer: | |
d7b32ed3 | 496 | if ((* (int *) var) == INT_MAX) |
d57a3c85 TJB |
497 | Py_RETURN_NONE; |
498 | /* Fall through. */ | |
499 | case var_zinteger: | |
d7b32ed3 | 500 | return PyLong_FromLong (* (int *) var); |
d57a3c85 TJB |
501 | |
502 | case var_uinteger: | |
503 | { | |
d7b32ed3 | 504 | unsigned int val = * (unsigned int *) var; |
d59b6f6c | 505 | |
d57a3c85 TJB |
506 | if (val == UINT_MAX) |
507 | Py_RETURN_NONE; | |
508 | return PyLong_FromUnsignedLong (val); | |
509 | } | |
510 | } | |
511 | ||
256458bc | 512 | return PyErr_Format (PyExc_RuntimeError, |
044c0f87 | 513 | _("Programmer error: unhandled type.")); |
d57a3c85 TJB |
514 | } |
515 | ||
516 | /* A Python function which returns a gdb parameter's value as a Python | |
517 | value. */ | |
518 | ||
0c72ed4c | 519 | static PyObject * |
8f500870 | 520 | gdbpy_parameter (PyObject *self, PyObject *args) |
d57a3c85 | 521 | { |
492d29ea | 522 | struct gdb_exception except = exception_none; |
d57a3c85 | 523 | struct cmd_list_element *alias, *prefix, *cmd; |
ddd49eee TT |
524 | const char *arg; |
525 | char *newarg; | |
cc924cad | 526 | int found = -1; |
d57a3c85 TJB |
527 | |
528 | if (! PyArg_ParseTuple (args, "s", &arg)) | |
529 | return NULL; | |
530 | ||
531 | newarg = concat ("show ", arg, (char *) NULL); | |
532 | ||
492d29ea | 533 | TRY |
d57a3c85 | 534 | { |
cc924cad | 535 | found = lookup_cmd_composition (newarg, &alias, &prefix, &cmd); |
d57a3c85 | 536 | } |
492d29ea PA |
537 | CATCH (ex, RETURN_MASK_ALL) |
538 | { | |
539 | except = ex; | |
540 | } | |
541 | END_CATCH | |
542 | ||
d57a3c85 TJB |
543 | xfree (newarg); |
544 | GDB_PY_HANDLE_EXCEPTION (except); | |
cc924cad TJB |
545 | if (!found) |
546 | return PyErr_Format (PyExc_RuntimeError, | |
044c0f87 | 547 | _("Could not find parameter `%s'."), arg); |
d57a3c85 TJB |
548 | |
549 | if (! cmd->var) | |
256458bc | 550 | return PyErr_Format (PyExc_RuntimeError, |
044c0f87 | 551 | _("`%s' is not a parameter."), arg); |
d7b32ed3 | 552 | return gdbpy_parameter_value (cmd->var_type, cmd->var); |
d57a3c85 TJB |
553 | } |
554 | ||
f870a310 TT |
555 | /* Wrapper for target_charset. */ |
556 | ||
557 | static PyObject * | |
558 | gdbpy_target_charset (PyObject *self, PyObject *args) | |
559 | { | |
560 | const char *cset = target_charset (python_gdbarch); | |
d59b6f6c | 561 | |
f870a310 TT |
562 | return PyUnicode_Decode (cset, strlen (cset), host_charset (), NULL); |
563 | } | |
564 | ||
565 | /* Wrapper for target_wide_charset. */ | |
566 | ||
567 | static PyObject * | |
568 | gdbpy_target_wide_charset (PyObject *self, PyObject *args) | |
569 | { | |
570 | const char *cset = target_wide_charset (python_gdbarch); | |
d59b6f6c | 571 | |
f870a310 TT |
572 | return PyUnicode_Decode (cset, strlen (cset), host_charset (), NULL); |
573 | } | |
574 | ||
d57a3c85 TJB |
575 | /* A Python function which evaluates a string using the gdb CLI. */ |
576 | ||
577 | static PyObject * | |
bc9f0842 | 578 | execute_gdb_command (PyObject *self, PyObject *args, PyObject *kw) |
d57a3c85 | 579 | { |
ddd49eee | 580 | const char *arg; |
bc9f0842 TT |
581 | PyObject *from_tty_obj = NULL, *to_string_obj = NULL; |
582 | int from_tty, to_string; | |
bc9f0842 | 583 | static char *keywords[] = {"command", "from_tty", "to_string", NULL }; |
d57a3c85 | 584 | |
bc9f0842 TT |
585 | if (! PyArg_ParseTupleAndKeywords (args, kw, "s|O!O!", keywords, &arg, |
586 | &PyBool_Type, &from_tty_obj, | |
587 | &PyBool_Type, &to_string_obj)) | |
d57a3c85 TJB |
588 | return NULL; |
589 | ||
12453b93 TJB |
590 | from_tty = 0; |
591 | if (from_tty_obj) | |
592 | { | |
bc9f0842 | 593 | int cmp = PyObject_IsTrue (from_tty_obj); |
12453b93 | 594 | if (cmp < 0) |
bc9f0842 | 595 | return NULL; |
12453b93 TJB |
596 | from_tty = cmp; |
597 | } | |
598 | ||
bc9f0842 TT |
599 | to_string = 0; |
600 | if (to_string_obj) | |
601 | { | |
602 | int cmp = PyObject_IsTrue (to_string_obj); | |
603 | if (cmp < 0) | |
604 | return NULL; | |
605 | to_string = cmp; | |
606 | } | |
607 | ||
db1ec11f PA |
608 | std::string to_string_res; |
609 | ||
492d29ea | 610 | TRY |
d57a3c85 | 611 | { |
86c6265d TT |
612 | /* Copy the argument text in case the command modifies it. */ |
613 | char *copy = xstrdup (arg); | |
614 | struct cleanup *cleanup = make_cleanup (xfree, copy); | |
e7ea3ec7 | 615 | struct interp *interp; |
bc9f0842 | 616 | |
b7b633e9 | 617 | scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0); |
b4a14fd0 | 618 | |
67ad9399 | 619 | scoped_restore save_uiout = make_scoped_restore (¤t_uiout); |
cd94f6d5 | 620 | |
e7ea3ec7 CU |
621 | /* Use the console interpreter uiout to have the same print format |
622 | for console or MI. */ | |
8322445e | 623 | interp = interp_lookup (current_ui, "console"); |
e7ea3ec7 CU |
624 | current_uiout = interp_ui_out (interp); |
625 | ||
47a80e90 | 626 | prevent_dont_repeat (); |
bc9f0842 | 627 | if (to_string) |
db1ec11f | 628 | to_string_res = execute_command_to_string (copy, from_tty); |
5da1313b | 629 | else |
db1ec11f | 630 | execute_command (copy, from_tty); |
86c6265d | 631 | do_cleanups (cleanup); |
d57a3c85 | 632 | } |
492d29ea PA |
633 | CATCH (except, RETURN_MASK_ALL) |
634 | { | |
635 | GDB_PY_HANDLE_EXCEPTION (except); | |
636 | } | |
637 | END_CATCH | |
d57a3c85 | 638 | |
347bddb7 PA |
639 | /* Do any commands attached to breakpoint we stopped at. */ |
640 | bpstat_do_actions (); | |
d57a3c85 | 641 | |
db1ec11f PA |
642 | if (to_string) |
643 | return PyString_FromString (to_string_res.c_str ()); | |
d57a3c85 TJB |
644 | Py_RETURN_NONE; |
645 | } | |
646 | ||
cb2e07a6 PM |
647 | /* Implementation of gdb.solib_name (Long) -> String. |
648 | Returns the name of the shared library holding a given address, or None. */ | |
649 | ||
650 | static PyObject * | |
651 | gdbpy_solib_name (PyObject *self, PyObject *args) | |
652 | { | |
653 | char *soname; | |
654 | PyObject *str_obj; | |
1b40ec05 | 655 | gdb_py_ulongest pc; |
74aedc46 | 656 | |
1b40ec05 | 657 | if (!PyArg_ParseTuple (args, GDB_PY_LLU_ARG, &pc)) |
cb2e07a6 PM |
658 | return NULL; |
659 | ||
660 | soname = solib_name_from_address (current_program_space, pc); | |
661 | if (soname) | |
4ae6cc19 | 662 | str_obj = host_string_to_python_string (soname); |
cb2e07a6 PM |
663 | else |
664 | { | |
665 | str_obj = Py_None; | |
666 | Py_INCREF (Py_None); | |
667 | } | |
668 | ||
669 | return str_obj; | |
670 | } | |
671 | ||
672 | /* A Python function which is a wrapper for decode_line_1. */ | |
673 | ||
674 | static PyObject * | |
675 | gdbpy_decode_line (PyObject *self, PyObject *args) | |
676 | { | |
492d29ea | 677 | struct gdb_exception except = exception_none; |
9a2b4c1b MS |
678 | struct symtabs_and_lines sals = { NULL, 0 }; /* Initialize to |
679 | appease gcc. */ | |
cb2e07a6 | 680 | struct symtab_and_line sal; |
f00aae0f | 681 | char *arg = NULL; |
cb2e07a6 PM |
682 | struct cleanup *cleanups; |
683 | PyObject *result = NULL; | |
684 | PyObject *return_result = NULL; | |
685 | PyObject *unparsed = NULL; | |
59ecaff3 | 686 | struct event_location *location = NULL; |
cb2e07a6 PM |
687 | |
688 | if (! PyArg_ParseTuple (args, "|s", &arg)) | |
689 | return NULL; | |
690 | ||
5d9c5995 | 691 | cleanups = make_cleanup (null_cleanup, NULL); |
cb2e07a6 | 692 | |
9bc3523d | 693 | sals.sals = NULL; |
492d29ea | 694 | |
f00aae0f KS |
695 | if (arg != NULL) |
696 | { | |
68dadef5 | 697 | location = string_to_event_location_basic (&arg, python_language); |
f00aae0f KS |
698 | make_cleanup_delete_event_location (location); |
699 | } | |
700 | ||
492d29ea | 701 | TRY |
cb2e07a6 | 702 | { |
59ecaff3 | 703 | if (location != NULL) |
c2f4122d | 704 | sals = decode_line_1 (location, 0, NULL, NULL, 0); |
cb2e07a6 PM |
705 | else |
706 | { | |
707 | set_default_source_symtab_and_line (); | |
708 | sal = get_current_source_symtab_and_line (); | |
709 | sals.sals = &sal; | |
710 | sals.nelts = 1; | |
711 | } | |
712 | } | |
492d29ea PA |
713 | CATCH (ex, RETURN_MASK_ALL) |
714 | { | |
715 | except = ex; | |
716 | } | |
717 | END_CATCH | |
9bc3523d TT |
718 | |
719 | if (sals.sals != NULL && sals.sals != &sal) | |
f00aae0f | 720 | make_cleanup (xfree, sals.sals); |
9bc3523d | 721 | |
cb2e07a6 PM |
722 | if (except.reason < 0) |
723 | { | |
724 | do_cleanups (cleanups); | |
725 | /* We know this will always throw. */ | |
f3300387 TT |
726 | gdbpy_convert_exception (except); |
727 | return NULL; | |
cb2e07a6 PM |
728 | } |
729 | ||
730 | if (sals.nelts) | |
731 | { | |
732 | int i; | |
733 | ||
734 | result = PyTuple_New (sals.nelts); | |
735 | if (! result) | |
736 | goto error; | |
737 | for (i = 0; i < sals.nelts; ++i) | |
738 | { | |
739 | PyObject *obj; | |
cb2e07a6 PM |
740 | |
741 | obj = symtab_and_line_to_sal_object (sals.sals[i]); | |
742 | if (! obj) | |
743 | { | |
744 | Py_DECREF (result); | |
745 | goto error; | |
746 | } | |
747 | ||
748 | PyTuple_SetItem (result, i, obj); | |
749 | } | |
750 | } | |
751 | else | |
752 | { | |
753 | result = Py_None; | |
754 | Py_INCREF (Py_None); | |
755 | } | |
756 | ||
757 | return_result = PyTuple_New (2); | |
758 | if (! return_result) | |
759 | { | |
760 | Py_DECREF (result); | |
761 | goto error; | |
762 | } | |
763 | ||
f00aae0f | 764 | if (arg != NULL && strlen (arg) > 0) |
9bc3523d | 765 | { |
f00aae0f | 766 | unparsed = PyString_FromString (arg); |
9bc3523d TT |
767 | if (unparsed == NULL) |
768 | { | |
769 | Py_DECREF (result); | |
770 | Py_DECREF (return_result); | |
771 | return_result = NULL; | |
772 | goto error; | |
773 | } | |
774 | } | |
cb2e07a6 PM |
775 | else |
776 | { | |
777 | unparsed = Py_None; | |
778 | Py_INCREF (Py_None); | |
779 | } | |
780 | ||
781 | PyTuple_SetItem (return_result, 0, unparsed); | |
782 | PyTuple_SetItem (return_result, 1, result); | |
783 | ||
9bc3523d | 784 | error: |
cb2e07a6 PM |
785 | do_cleanups (cleanups); |
786 | ||
787 | return return_result; | |
cb2e07a6 PM |
788 | } |
789 | ||
57a1d736 TT |
790 | /* Parse a string and evaluate it as an expression. */ |
791 | static PyObject * | |
792 | gdbpy_parse_and_eval (PyObject *self, PyObject *args) | |
793 | { | |
ddd49eee | 794 | const char *expr_str; |
57a1d736 | 795 | struct value *result = NULL; |
57a1d736 TT |
796 | |
797 | if (!PyArg_ParseTuple (args, "s", &expr_str)) | |
798 | return NULL; | |
799 | ||
492d29ea | 800 | TRY |
57a1d736 | 801 | { |
bbc13ae3 | 802 | result = parse_and_eval (expr_str); |
57a1d736 | 803 | } |
492d29ea PA |
804 | CATCH (except, RETURN_MASK_ALL) |
805 | { | |
806 | GDB_PY_HANDLE_EXCEPTION (except); | |
807 | } | |
808 | END_CATCH | |
57a1d736 TT |
809 | |
810 | return value_to_value_object (result); | |
811 | } | |
812 | ||
7efc75aa SCR |
813 | /* Implementation of gdb.find_pc_line function. |
814 | Returns the gdb.Symtab_and_line object corresponding to a PC value. */ | |
815 | ||
816 | static PyObject * | |
817 | gdbpy_find_pc_line (PyObject *self, PyObject *args) | |
818 | { | |
29ca12b3 | 819 | gdb_py_ulongest pc_llu; |
62d7fb51 | 820 | PyObject *result = NULL; /* init for gcc -Wall */ |
7efc75aa SCR |
821 | |
822 | if (!PyArg_ParseTuple (args, GDB_PY_LLU_ARG, &pc_llu)) | |
823 | return NULL; | |
824 | ||
492d29ea | 825 | TRY |
9e974e55 TT |
826 | { |
827 | struct symtab_and_line sal; | |
828 | CORE_ADDR pc; | |
829 | ||
830 | pc = (CORE_ADDR) pc_llu; | |
831 | sal = find_pc_line (pc, 0); | |
832 | result = symtab_and_line_to_sal_object (sal); | |
833 | } | |
492d29ea PA |
834 | CATCH (except, RETURN_MASK_ALL) |
835 | { | |
836 | GDB_PY_HANDLE_EXCEPTION (except); | |
837 | } | |
838 | END_CATCH | |
9e974e55 TT |
839 | |
840 | return result; | |
7efc75aa SCR |
841 | } |
842 | ||
e0f3fd7c TT |
843 | /* Implementation of gdb.invalidate_cached_frames. */ |
844 | ||
845 | static PyObject * | |
846 | gdbpy_invalidate_cached_frames (PyObject *self, PyObject *args) | |
847 | { | |
848 | reinit_frame_cache (); | |
849 | Py_RETURN_NONE; | |
850 | } | |
851 | ||
d234ef5c | 852 | /* Read a file as Python code. |
6dddc817 DE |
853 | This is the extension_language_script_ops.script_sourcer "method". |
854 | FILE is the file to load. FILENAME is name of the file FILE. | |
d234ef5c DE |
855 | This does not throw any errors. If an exception occurs python will print |
856 | the traceback and clear the error indicator. */ | |
973817a3 | 857 | |
6dddc817 DE |
858 | static void |
859 | gdbpy_source_script (const struct extension_language_defn *extlang, | |
860 | FILE *file, const char *filename) | |
973817a3 | 861 | { |
60e600ec | 862 | gdbpy_enter enter_py (get_current_arch (), current_language); |
4c63965b | 863 | python_run_simple_file (file, filename); |
973817a3 JB |
864 | } |
865 | ||
d57a3c85 TJB |
866 | \f |
867 | ||
ca5c20b6 PM |
868 | /* Posting and handling events. */ |
869 | ||
870 | /* A single event. */ | |
871 | struct gdbpy_event | |
872 | { | |
873 | /* The Python event. This is just a callable object. */ | |
874 | PyObject *event; | |
875 | /* The next event. */ | |
876 | struct gdbpy_event *next; | |
877 | }; | |
878 | ||
879 | /* All pending events. */ | |
880 | static struct gdbpy_event *gdbpy_event_list; | |
881 | /* The final link of the event list. */ | |
882 | static struct gdbpy_event **gdbpy_event_list_end; | |
883 | ||
6eddd09a PA |
884 | /* So that we can wake up the main thread even when it is blocked in |
885 | poll(). */ | |
886 | static struct serial_event *gdbpy_serial_event; | |
ca5c20b6 PM |
887 | |
888 | /* The file handler callback. This reads from the internal pipe, and | |
889 | then processes the Python event queue. This will always be run in | |
890 | the main gdb thread. */ | |
4a532131 | 891 | |
ca5c20b6 | 892 | static void |
6eddd09a | 893 | gdbpy_run_events (int error, gdb_client_data client_data) |
ca5c20b6 | 894 | { |
60e600ec | 895 | gdbpy_enter enter_py (get_current_arch (), current_language); |
ca5c20b6 | 896 | |
6eddd09a PA |
897 | /* Clear the event fd. Do this before flushing the events list, so |
898 | that any new event post afterwards is sure to re-awake the event | |
4a532131 | 899 | loop. */ |
6eddd09a | 900 | serial_event_clear (gdbpy_serial_event); |
ca5c20b6 PM |
901 | |
902 | while (gdbpy_event_list) | |
903 | { | |
02146ba5 TT |
904 | PyObject *call_result; |
905 | ||
ca5c20b6 PM |
906 | /* Dispatching the event might push a new element onto the event |
907 | loop, so we update here "atomically enough". */ | |
908 | struct gdbpy_event *item = gdbpy_event_list; | |
909 | gdbpy_event_list = gdbpy_event_list->next; | |
910 | if (gdbpy_event_list == NULL) | |
911 | gdbpy_event_list_end = &gdbpy_event_list; | |
912 | ||
913 | /* Ignore errors. */ | |
02146ba5 TT |
914 | call_result = PyObject_CallObject (item->event, NULL); |
915 | if (call_result == NULL) | |
ca5c20b6 PM |
916 | PyErr_Clear (); |
917 | ||
02146ba5 | 918 | Py_XDECREF (call_result); |
ca5c20b6 PM |
919 | Py_DECREF (item->event); |
920 | xfree (item); | |
921 | } | |
ca5c20b6 PM |
922 | } |
923 | ||
924 | /* Submit an event to the gdb thread. */ | |
925 | static PyObject * | |
926 | gdbpy_post_event (PyObject *self, PyObject *args) | |
927 | { | |
928 | struct gdbpy_event *event; | |
929 | PyObject *func; | |
930 | int wakeup; | |
931 | ||
932 | if (!PyArg_ParseTuple (args, "O", &func)) | |
933 | return NULL; | |
934 | ||
935 | if (!PyCallable_Check (func)) | |
936 | { | |
256458bc | 937 | PyErr_SetString (PyExc_RuntimeError, |
ca5c20b6 PM |
938 | _("Posted event is not callable")); |
939 | return NULL; | |
940 | } | |
941 | ||
942 | Py_INCREF (func); | |
943 | ||
944 | /* From here until the end of the function, we have the GIL, so we | |
945 | can operate on our global data structures without worrying. */ | |
946 | wakeup = gdbpy_event_list == NULL; | |
947 | ||
948 | event = XNEW (struct gdbpy_event); | |
949 | event->event = func; | |
950 | event->next = NULL; | |
951 | *gdbpy_event_list_end = event; | |
952 | gdbpy_event_list_end = &event->next; | |
953 | ||
954 | /* Wake up gdb when needed. */ | |
955 | if (wakeup) | |
6eddd09a | 956 | serial_event_set (gdbpy_serial_event); |
ca5c20b6 PM |
957 | |
958 | Py_RETURN_NONE; | |
959 | } | |
960 | ||
961 | /* Initialize the Python event handler. */ | |
999633ed | 962 | static int |
ca5c20b6 PM |
963 | gdbpy_initialize_events (void) |
964 | { | |
6eddd09a PA |
965 | gdbpy_event_list_end = &gdbpy_event_list; |
966 | ||
967 | gdbpy_serial_event = make_serial_event (); | |
968 | add_file_handler (serial_event_fd (gdbpy_serial_event), | |
969 | gdbpy_run_events, NULL); | |
999633ed TT |
970 | |
971 | return 0; | |
ca5c20b6 PM |
972 | } |
973 | ||
d17b6f81 PM |
974 | \f |
975 | ||
6dddc817 DE |
976 | /* This is the extension_language_ops.before_prompt "method". */ |
977 | ||
978 | static enum ext_lang_rc | |
979 | gdbpy_before_prompt_hook (const struct extension_language_defn *extlang, | |
980 | const char *current_gdb_prompt) | |
d17b6f81 | 981 | { |
0646da15 | 982 | if (!gdb_python_initialized) |
6dddc817 | 983 | return EXT_LANG_RC_NOP; |
0646da15 | 984 | |
a88b13c7 | 985 | gdbpy_enter enter_py (get_current_arch (), current_language); |
d17b6f81 | 986 | |
b9516fa1 YPK |
987 | if (gdb_python_module |
988 | && PyObject_HasAttrString (gdb_python_module, "prompt_hook")) | |
d17b6f81 | 989 | { |
a88b13c7 TT |
990 | gdbpy_ref hook (PyObject_GetAttrString (gdb_python_module, |
991 | "prompt_hook")); | |
d17b6f81 | 992 | if (hook == NULL) |
d17b6f81 | 993 | { |
a88b13c7 TT |
994 | gdbpy_print_stack (); |
995 | return EXT_LANG_RC_ERROR; | |
996 | } | |
d17b6f81 | 997 | |
a88b13c7 TT |
998 | if (PyCallable_Check (hook.get ())) |
999 | { | |
1000 | gdbpy_ref current_prompt (PyString_FromString (current_gdb_prompt)); | |
d17b6f81 | 1001 | if (current_prompt == NULL) |
a88b13c7 TT |
1002 | { |
1003 | gdbpy_print_stack (); | |
1004 | return EXT_LANG_RC_ERROR; | |
1005 | } | |
d17b6f81 | 1006 | |
a88b13c7 TT |
1007 | gdbpy_ref result (PyObject_CallFunctionObjArgs (hook.get (), |
1008 | current_prompt.get (), | |
1009 | NULL)); | |
d17b6f81 | 1010 | if (result == NULL) |
a88b13c7 TT |
1011 | { |
1012 | gdbpy_print_stack (); | |
1013 | return EXT_LANG_RC_ERROR; | |
1014 | } | |
d17b6f81 PM |
1015 | |
1016 | /* Return type should be None, or a String. If it is None, | |
1017 | fall through, we will not set a prompt. If it is a | |
1018 | string, set PROMPT. Anything else, set an exception. */ | |
a88b13c7 | 1019 | if (result != Py_None && ! PyString_Check (result.get ())) |
d17b6f81 PM |
1020 | { |
1021 | PyErr_Format (PyExc_RuntimeError, | |
1022 | _("Return from prompt_hook must " \ | |
1023 | "be either a Python string, or None")); | |
a88b13c7 TT |
1024 | gdbpy_print_stack (); |
1025 | return EXT_LANG_RC_ERROR; | |
d17b6f81 PM |
1026 | } |
1027 | ||
1028 | if (result != Py_None) | |
1029 | { | |
a88b13c7 TT |
1030 | gdb::unique_xmalloc_ptr<char> |
1031 | prompt (python_string_to_host_string (result.get ())); | |
d17b6f81 PM |
1032 | |
1033 | if (prompt == NULL) | |
a88b13c7 TT |
1034 | { |
1035 | gdbpy_print_stack (); | |
1036 | return EXT_LANG_RC_ERROR; | |
1037 | } | |
1038 | ||
1039 | set_prompt (prompt.get ()); | |
1040 | return EXT_LANG_RC_OK; | |
d17b6f81 PM |
1041 | } |
1042 | } | |
1043 | } | |
1044 | ||
a88b13c7 | 1045 | return EXT_LANG_RC_NOP; |
d17b6f81 PM |
1046 | } |
1047 | ||
1048 | \f | |
1049 | ||
d57a3c85 TJB |
1050 | /* Printing. */ |
1051 | ||
1052 | /* A python function to write a single string using gdb's filtered | |
99c3dc11 PM |
1053 | output stream . The optional keyword STREAM can be used to write |
1054 | to a particular stream. The default stream is to gdb_stdout. */ | |
1055 | ||
d57a3c85 | 1056 | static PyObject * |
99c3dc11 | 1057 | gdbpy_write (PyObject *self, PyObject *args, PyObject *kw) |
d57a3c85 | 1058 | { |
ddd49eee | 1059 | const char *arg; |
99c3dc11 PM |
1060 | static char *keywords[] = {"text", "stream", NULL }; |
1061 | int stream_type = 0; | |
256458bc | 1062 | |
99c3dc11 PM |
1063 | if (! PyArg_ParseTupleAndKeywords (args, kw, "s|i", keywords, &arg, |
1064 | &stream_type)) | |
d57a3c85 | 1065 | return NULL; |
99c3dc11 | 1066 | |
492d29ea | 1067 | TRY |
99c3dc11 | 1068 | { |
adb4fe3b ME |
1069 | switch (stream_type) |
1070 | { | |
1071 | case 1: | |
1072 | { | |
1073 | fprintf_filtered (gdb_stderr, "%s", arg); | |
1074 | break; | |
1075 | } | |
1076 | case 2: | |
1077 | { | |
1078 | fprintf_filtered (gdb_stdlog, "%s", arg); | |
1079 | break; | |
1080 | } | |
1081 | default: | |
1082 | fprintf_filtered (gdb_stdout, "%s", arg); | |
1083 | } | |
99c3dc11 | 1084 | } |
492d29ea PA |
1085 | CATCH (except, RETURN_MASK_ALL) |
1086 | { | |
1087 | GDB_PY_HANDLE_EXCEPTION (except); | |
1088 | } | |
1089 | END_CATCH | |
256458bc | 1090 | |
d57a3c85 TJB |
1091 | Py_RETURN_NONE; |
1092 | } | |
1093 | ||
99c3dc11 PM |
1094 | /* A python function to flush a gdb stream. The optional keyword |
1095 | STREAM can be used to flush a particular stream. The default stream | |
1096 | is gdb_stdout. */ | |
1097 | ||
d57a3c85 | 1098 | static PyObject * |
99c3dc11 | 1099 | gdbpy_flush (PyObject *self, PyObject *args, PyObject *kw) |
d57a3c85 | 1100 | { |
99c3dc11 PM |
1101 | static char *keywords[] = {"stream", NULL }; |
1102 | int stream_type = 0; | |
256458bc | 1103 | |
99c3dc11 PM |
1104 | if (! PyArg_ParseTupleAndKeywords (args, kw, "|i", keywords, |
1105 | &stream_type)) | |
1106 | return NULL; | |
1107 | ||
1108 | switch (stream_type) | |
1109 | { | |
1110 | case 1: | |
1111 | { | |
1112 | gdb_flush (gdb_stderr); | |
1113 | break; | |
1114 | } | |
1115 | case 2: | |
1116 | { | |
1117 | gdb_flush (gdb_stdlog); | |
1118 | break; | |
1119 | } | |
1120 | default: | |
1121 | gdb_flush (gdb_stdout); | |
1122 | } | |
256458bc | 1123 | |
d57a3c85 TJB |
1124 | Py_RETURN_NONE; |
1125 | } | |
1126 | ||
69b4374a DE |
1127 | /* Return non-zero if print-stack is not "none". */ |
1128 | ||
1129 | int | |
1130 | gdbpy_print_python_errors_p (void) | |
1131 | { | |
1132 | return gdbpy_should_print_stack != python_excp_none; | |
1133 | } | |
1134 | ||
80b6e756 PM |
1135 | /* Print a python exception trace, print just a message, or print |
1136 | nothing and clear the python exception, depending on | |
1137 | gdbpy_should_print_stack. Only call this if a python exception is | |
1138 | set. */ | |
d57a3c85 TJB |
1139 | void |
1140 | gdbpy_print_stack (void) | |
1141 | { | |
7f6a5dde | 1142 | |
80b6e756 PM |
1143 | /* Print "none", just clear exception. */ |
1144 | if (gdbpy_should_print_stack == python_excp_none) | |
1145 | { | |
1146 | PyErr_Clear (); | |
1147 | } | |
1148 | /* Print "full" message and backtrace. */ | |
1149 | else if (gdbpy_should_print_stack == python_excp_full) | |
0bf0f8c4 DE |
1150 | { |
1151 | PyErr_Print (); | |
1152 | /* PyErr_Print doesn't necessarily end output with a newline. | |
1153 | This works because Python's stdout/stderr is fed through | |
1154 | printf_filtered. */ | |
492d29ea | 1155 | TRY |
7f6a5dde TT |
1156 | { |
1157 | begin_line (); | |
1158 | } | |
492d29ea PA |
1159 | CATCH (except, RETURN_MASK_ALL) |
1160 | { | |
1161 | } | |
1162 | END_CATCH | |
0bf0f8c4 | 1163 | } |
80b6e756 | 1164 | /* Print "message", just error print message. */ |
d57a3c85 | 1165 | else |
80b6e756 PM |
1166 | { |
1167 | PyObject *ptype, *pvalue, *ptraceback; | |
80b6e756 PM |
1168 | |
1169 | PyErr_Fetch (&ptype, &pvalue, &ptraceback); | |
1170 | ||
1171 | /* Fetch the error message contained within ptype, pvalue. */ | |
9b972014 TT |
1172 | gdb::unique_xmalloc_ptr<char> |
1173 | msg (gdbpy_exception_to_string (ptype, pvalue)); | |
1174 | gdb::unique_xmalloc_ptr<char> type (gdbpy_obj_to_string (ptype)); | |
7f6a5dde | 1175 | |
492d29ea | 1176 | TRY |
80b6e756 | 1177 | { |
7f6a5dde TT |
1178 | if (msg == NULL) |
1179 | { | |
1180 | /* An error occurred computing the string representation of the | |
1181 | error message. */ | |
1182 | fprintf_filtered (gdb_stderr, | |
1183 | _("Error occurred computing Python error" \ | |
1184 | "message.\n")); | |
1185 | } | |
1186 | else | |
1187 | fprintf_filtered (gdb_stderr, "Python Exception %s %s: \n", | |
9b972014 | 1188 | type.get (), msg.get ()); |
80b6e756 | 1189 | } |
492d29ea PA |
1190 | CATCH (except, RETURN_MASK_ALL) |
1191 | { | |
1192 | } | |
1193 | END_CATCH | |
80b6e756 PM |
1194 | |
1195 | Py_XDECREF (ptype); | |
1196 | Py_XDECREF (pvalue); | |
1197 | Py_XDECREF (ptraceback); | |
80b6e756 | 1198 | } |
d57a3c85 TJB |
1199 | } |
1200 | ||
89c73ade TT |
1201 | \f |
1202 | ||
fa33c3cd DE |
1203 | /* Return the current Progspace. |
1204 | There always is one. */ | |
1205 | ||
1206 | static PyObject * | |
1207 | gdbpy_get_current_progspace (PyObject *unused1, PyObject *unused2) | |
1208 | { | |
1209 | PyObject *result; | |
1210 | ||
1211 | result = pspace_to_pspace_object (current_program_space); | |
1212 | if (result) | |
1213 | Py_INCREF (result); | |
1214 | return result; | |
1215 | } | |
1216 | ||
1217 | /* Return a sequence holding all the Progspaces. */ | |
1218 | ||
1219 | static PyObject * | |
1220 | gdbpy_progspaces (PyObject *unused1, PyObject *unused2) | |
1221 | { | |
1222 | struct program_space *ps; | |
fa33c3cd | 1223 | |
ff3724f5 TT |
1224 | gdbpy_ref list (PyList_New (0)); |
1225 | if (list == NULL) | |
fa33c3cd DE |
1226 | return NULL; |
1227 | ||
1228 | ALL_PSPACES (ps) | |
1229 | { | |
1230 | PyObject *item = pspace_to_pspace_object (ps); | |
d59b6f6c | 1231 | |
ff3724f5 TT |
1232 | if (!item || PyList_Append (list.get (), item) == -1) |
1233 | return NULL; | |
fa33c3cd DE |
1234 | } |
1235 | ||
ff3724f5 | 1236 | return list.release (); |
fa33c3cd DE |
1237 | } |
1238 | ||
1239 | \f | |
1240 | ||
89c73ade | 1241 | /* The "current" objfile. This is set when gdb detects that a new |
8a1ea21f | 1242 | objfile has been loaded. It is only set for the duration of a call to |
9f050062 DE |
1243 | gdbpy_source_objfile_script and gdbpy_execute_objfile_script; it is NULL |
1244 | at other times. */ | |
89c73ade TT |
1245 | static struct objfile *gdbpy_current_objfile; |
1246 | ||
4c63965b JK |
1247 | /* Set the current objfile to OBJFILE and then read FILE named FILENAME |
1248 | as Python code. This does not throw any errors. If an exception | |
6dddc817 DE |
1249 | occurs python will print the traceback and clear the error indicator. |
1250 | This is the extension_language_script_ops.objfile_script_sourcer | |
1251 | "method". */ | |
89c73ade | 1252 | |
6dddc817 DE |
1253 | static void |
1254 | gdbpy_source_objfile_script (const struct extension_language_defn *extlang, | |
1255 | struct objfile *objfile, FILE *file, | |
1256 | const char *filename) | |
89c73ade | 1257 | { |
0646da15 TT |
1258 | if (!gdb_python_initialized) |
1259 | return; | |
1260 | ||
60e600ec | 1261 | gdbpy_enter enter_py (get_objfile_arch (objfile), current_language); |
89c73ade TT |
1262 | gdbpy_current_objfile = objfile; |
1263 | ||
4c63965b | 1264 | python_run_simple_file (file, filename); |
89c73ade | 1265 | |
89c73ade | 1266 | gdbpy_current_objfile = NULL; |
89c73ade TT |
1267 | } |
1268 | ||
9f050062 DE |
1269 | /* Set the current objfile to OBJFILE and then execute SCRIPT |
1270 | as Python code. This does not throw any errors. If an exception | |
1271 | occurs python will print the traceback and clear the error indicator. | |
1272 | This is the extension_language_script_ops.objfile_script_executor | |
1273 | "method". */ | |
1274 | ||
1275 | static void | |
1276 | gdbpy_execute_objfile_script (const struct extension_language_defn *extlang, | |
1277 | struct objfile *objfile, const char *name, | |
1278 | const char *script) | |
1279 | { | |
9f050062 DE |
1280 | if (!gdb_python_initialized) |
1281 | return; | |
1282 | ||
60e600ec | 1283 | gdbpy_enter enter_py (get_objfile_arch (objfile), current_language); |
9f050062 DE |
1284 | gdbpy_current_objfile = objfile; |
1285 | ||
1286 | PyRun_SimpleString (script); | |
1287 | ||
9f050062 DE |
1288 | gdbpy_current_objfile = NULL; |
1289 | } | |
1290 | ||
89c73ade | 1291 | /* Return the current Objfile, or None if there isn't one. */ |
8a1ea21f | 1292 | |
89c73ade TT |
1293 | static PyObject * |
1294 | gdbpy_get_current_objfile (PyObject *unused1, PyObject *unused2) | |
1295 | { | |
1296 | PyObject *result; | |
1297 | ||
1298 | if (! gdbpy_current_objfile) | |
1299 | Py_RETURN_NONE; | |
1300 | ||
1301 | result = objfile_to_objfile_object (gdbpy_current_objfile); | |
1302 | if (result) | |
1303 | Py_INCREF (result); | |
1304 | return result; | |
1305 | } | |
1306 | ||
1307 | /* Return a sequence holding all the Objfiles. */ | |
fa33c3cd | 1308 | |
89c73ade TT |
1309 | static PyObject * |
1310 | gdbpy_objfiles (PyObject *unused1, PyObject *unused2) | |
1311 | { | |
1312 | struct objfile *objf; | |
89c73ade | 1313 | |
ff3724f5 TT |
1314 | gdbpy_ref list (PyList_New (0)); |
1315 | if (list == NULL) | |
89c73ade TT |
1316 | return NULL; |
1317 | ||
1318 | ALL_OBJFILES (objf) | |
1319 | { | |
1320 | PyObject *item = objfile_to_objfile_object (objf); | |
d59b6f6c | 1321 | |
ff3724f5 TT |
1322 | if (!item || PyList_Append (list.get (), item) == -1) |
1323 | return NULL; | |
89c73ade TT |
1324 | } |
1325 | ||
ff3724f5 | 1326 | return list.release (); |
89c73ade TT |
1327 | } |
1328 | ||
6dddc817 DE |
1329 | /* Compute the list of active python type printers and store them in |
1330 | EXT_PRINTERS->py_type_printers. The product of this function is used by | |
1331 | gdbpy_apply_type_printers, and freed by gdbpy_free_type_printers. | |
1332 | This is the extension_language_ops.start_type_printers "method". */ | |
18a9fc12 | 1333 | |
6dddc817 DE |
1334 | static void |
1335 | gdbpy_start_type_printers (const struct extension_language_defn *extlang, | |
1336 | struct ext_lang_type_printers *ext_printers) | |
18a9fc12 | 1337 | { |
6dddc817 | 1338 | PyObject *type_module, *func = NULL, *printers_obj = NULL; |
18a9fc12 | 1339 | |
0646da15 | 1340 | if (!gdb_python_initialized) |
6dddc817 | 1341 | return; |
0646da15 | 1342 | |
60e600ec | 1343 | gdbpy_enter enter_py (get_current_arch (), current_language); |
18a9fc12 TT |
1344 | |
1345 | type_module = PyImport_ImportModule ("gdb.types"); | |
1346 | if (type_module == NULL) | |
1347 | { | |
1348 | gdbpy_print_stack (); | |
1349 | goto done; | |
1350 | } | |
18a9fc12 TT |
1351 | |
1352 | func = PyObject_GetAttrString (type_module, "get_type_recognizers"); | |
1353 | if (func == NULL) | |
1354 | { | |
1355 | gdbpy_print_stack (); | |
1356 | goto done; | |
1357 | } | |
18a9fc12 | 1358 | |
6dddc817 DE |
1359 | printers_obj = PyObject_CallFunctionObjArgs (func, (char *) NULL); |
1360 | if (printers_obj == NULL) | |
18a9fc12 | 1361 | gdbpy_print_stack (); |
6dddc817 DE |
1362 | else |
1363 | ext_printers->py_type_printers = printers_obj; | |
18a9fc12 TT |
1364 | |
1365 | done: | |
3d4a3c3e TT |
1366 | Py_XDECREF (type_module); |
1367 | Py_XDECREF (func); | |
18a9fc12 TT |
1368 | } |
1369 | ||
6dddc817 DE |
1370 | /* If TYPE is recognized by some type printer, store in *PRETTIED_TYPE |
1371 | a newly allocated string holding the type's replacement name, and return | |
1372 | EXT_LANG_RC_OK. The caller is responsible for freeing the string. | |
1373 | If there's a Python error return EXT_LANG_RC_ERROR. | |
1374 | Otherwise, return EXT_LANG_RC_NOP. | |
1375 | This is the extension_language_ops.apply_type_printers "method". */ | |
1376 | ||
1377 | static enum ext_lang_rc | |
1378 | gdbpy_apply_type_printers (const struct extension_language_defn *extlang, | |
1379 | const struct ext_lang_type_printers *ext_printers, | |
1380 | struct type *type, char **prettied_type) | |
18a9fc12 | 1381 | { |
3d4a3c3e TT |
1382 | PyObject *type_obj, *type_module = NULL, *func = NULL; |
1383 | PyObject *result_obj = NULL; | |
19ba03f4 | 1384 | PyObject *printers_obj = (PyObject *) ext_printers->py_type_printers; |
9b972014 | 1385 | gdb::unique_xmalloc_ptr<char> result; |
18a9fc12 TT |
1386 | |
1387 | if (printers_obj == NULL) | |
6dddc817 | 1388 | return EXT_LANG_RC_NOP; |
18a9fc12 | 1389 | |
0646da15 | 1390 | if (!gdb_python_initialized) |
6dddc817 | 1391 | return EXT_LANG_RC_NOP; |
0646da15 | 1392 | |
60e600ec | 1393 | gdbpy_enter enter_py (get_current_arch (), current_language); |
18a9fc12 TT |
1394 | |
1395 | type_obj = type_to_type_object (type); | |
1396 | if (type_obj == NULL) | |
1397 | { | |
1398 | gdbpy_print_stack (); | |
1399 | goto done; | |
1400 | } | |
18a9fc12 TT |
1401 | |
1402 | type_module = PyImport_ImportModule ("gdb.types"); | |
1403 | if (type_module == NULL) | |
1404 | { | |
1405 | gdbpy_print_stack (); | |
1406 | goto done; | |
1407 | } | |
18a9fc12 TT |
1408 | |
1409 | func = PyObject_GetAttrString (type_module, "apply_type_recognizers"); | |
1410 | if (func == NULL) | |
1411 | { | |
1412 | gdbpy_print_stack (); | |
1413 | goto done; | |
1414 | } | |
18a9fc12 TT |
1415 | |
1416 | result_obj = PyObject_CallFunctionObjArgs (func, printers_obj, | |
1417 | type_obj, (char *) NULL); | |
1418 | if (result_obj == NULL) | |
1419 | { | |
1420 | gdbpy_print_stack (); | |
1421 | goto done; | |
1422 | } | |
18a9fc12 TT |
1423 | |
1424 | if (result_obj != Py_None) | |
1425 | { | |
1426 | result = python_string_to_host_string (result_obj); | |
1427 | if (result == NULL) | |
1428 | gdbpy_print_stack (); | |
1429 | } | |
1430 | ||
1431 | done: | |
3d4a3c3e TT |
1432 | Py_XDECREF (type_obj); |
1433 | Py_XDECREF (type_module); | |
1434 | Py_XDECREF (func); | |
1435 | Py_XDECREF (result_obj); | |
6dddc817 | 1436 | if (result != NULL) |
9b972014 TT |
1437 | { |
1438 | *prettied_type = result.release (); | |
1439 | return EXT_LANG_RC_OK; | |
1440 | } | |
1441 | return EXT_LANG_RC_ERROR; | |
18a9fc12 TT |
1442 | } |
1443 | ||
6dddc817 DE |
1444 | /* Free the result of start_type_printers. |
1445 | This is the extension_language_ops.free_type_printers "method". */ | |
18a9fc12 | 1446 | |
6dddc817 DE |
1447 | static void |
1448 | gdbpy_free_type_printers (const struct extension_language_defn *extlang, | |
1449 | struct ext_lang_type_printers *ext_printers) | |
18a9fc12 | 1450 | { |
19ba03f4 | 1451 | PyObject *printers = (PyObject *) ext_printers->py_type_printers; |
18a9fc12 TT |
1452 | |
1453 | if (printers == NULL) | |
1454 | return; | |
1455 | ||
0646da15 TT |
1456 | if (!gdb_python_initialized) |
1457 | return; | |
1458 | ||
60e600ec | 1459 | gdbpy_enter enter_py (get_current_arch (), current_language); |
18a9fc12 | 1460 | Py_DECREF (printers); |
18a9fc12 TT |
1461 | } |
1462 | ||
d57a3c85 TJB |
1463 | #else /* HAVE_PYTHON */ |
1464 | ||
8315665e YPK |
1465 | /* Dummy implementation of the gdb "python-interactive" and "python" |
1466 | command. */ | |
d57a3c85 TJB |
1467 | |
1468 | static void | |
8315665e | 1469 | python_interactive_command (char *arg, int from_tty) |
d57a3c85 | 1470 | { |
529480d0 | 1471 | arg = skip_spaces (arg); |
d57a3c85 TJB |
1472 | if (arg && *arg) |
1473 | error (_("Python scripting is not supported in this copy of GDB.")); | |
1474 | else | |
1475 | { | |
1476 | struct command_line *l = get_command_line (python_control, ""); | |
1477 | struct cleanup *cleanups = make_cleanup_free_command_lines (&l); | |
d59b6f6c | 1478 | |
d57a3c85 TJB |
1479 | execute_control_command_untraced (l); |
1480 | do_cleanups (cleanups); | |
1481 | } | |
1482 | } | |
1483 | ||
8315665e YPK |
1484 | static void |
1485 | python_command (char *arg, int from_tty) | |
1486 | { | |
1487 | python_interactive_command (arg, from_tty); | |
1488 | } | |
1489 | ||
d57a3c85 TJB |
1490 | #endif /* HAVE_PYTHON */ |
1491 | ||
1492 | \f | |
1493 | ||
713389e0 PM |
1494 | /* Lists for 'set python' commands. */ |
1495 | ||
1496 | static struct cmd_list_element *user_set_python_list; | |
1497 | static struct cmd_list_element *user_show_python_list; | |
d57a3c85 | 1498 | |
713389e0 PM |
1499 | /* Function for use by 'set python' prefix command. */ |
1500 | ||
1501 | static void | |
1502 | user_set_python (char *args, int from_tty) | |
1503 | { | |
1504 | help_list (user_set_python_list, "set python ", all_commands, | |
1505 | gdb_stdout); | |
1506 | } | |
1507 | ||
1508 | /* Function for use by 'show python' prefix command. */ | |
1509 | ||
1510 | static void | |
1511 | user_show_python (char *args, int from_tty) | |
d57a3c85 | 1512 | { |
713389e0 | 1513 | cmd_show_list (user_show_python_list, from_tty, ""); |
d57a3c85 TJB |
1514 | } |
1515 | ||
1516 | /* Initialize the Python code. */ | |
1517 | ||
810849a3 AS |
1518 | #ifdef HAVE_PYTHON |
1519 | ||
d7de8e3c TT |
1520 | /* This is installed as a final cleanup and cleans up the |
1521 | interpreter. This lets Python's 'atexit' work. */ | |
1522 | ||
1523 | static void | |
1524 | finalize_python (void *ignore) | |
1525 | { | |
6dddc817 DE |
1526 | struct active_ext_lang_state *previous_active; |
1527 | ||
d7de8e3c TT |
1528 | /* We don't use ensure_python_env here because if we ever ran the |
1529 | cleanup, gdb would crash -- because the cleanup calls into the | |
1530 | Python interpreter, which we are about to destroy. It seems | |
1531 | clearer to make the needed calls explicitly here than to create a | |
1532 | cleanup and then mysteriously discard it. */ | |
6dddc817 DE |
1533 | |
1534 | /* This is only called as a final cleanup so we can assume the active | |
1535 | SIGINT handler is gdb's. We still need to tell it to notify Python. */ | |
1536 | previous_active = set_active_ext_lang (&extension_language_python); | |
1537 | ||
b1209b03 | 1538 | (void) PyGILState_Ensure (); |
f5656ead | 1539 | python_gdbarch = target_gdbarch (); |
d7de8e3c TT |
1540 | python_language = current_language; |
1541 | ||
1542 | Py_Finalize (); | |
6dddc817 DE |
1543 | |
1544 | restore_active_ext_lang (previous_active); | |
d7de8e3c | 1545 | } |
810849a3 | 1546 | #endif |
d7de8e3c | 1547 | |
2c0b251b PA |
1548 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1549 | extern initialize_file_ftype _initialize_python; | |
1550 | ||
d57a3c85 TJB |
1551 | void |
1552 | _initialize_python (void) | |
1553 | { | |
9a27f2c6 PK |
1554 | char *progname; |
1555 | #ifdef IS_PY3K | |
1556 | int i; | |
1557 | size_t progsize, count; | |
1558 | char *oldloc; | |
1559 | wchar_t *progname_copy; | |
1560 | #endif | |
713389e0 | 1561 | |
8315665e YPK |
1562 | add_com ("python-interactive", class_obscure, |
1563 | python_interactive_command, | |
1564 | #ifdef HAVE_PYTHON | |
1565 | _("\ | |
e3480f4a YPK |
1566 | Start an interactive Python prompt.\n\ |
1567 | \n\ | |
1568 | To return to GDB, type the EOF character (e.g., Ctrl-D on an empty\n\ | |
1569 | prompt).\n\ | |
8315665e YPK |
1570 | \n\ |
1571 | Alternatively, a single-line Python command can be given as an\n\ | |
1572 | argument, and if the command is an expression, the result will be\n\ | |
1573 | printed. For example:\n\ | |
1574 | \n\ | |
1575 | (gdb) python-interactive 2 + 3\n\ | |
1576 | 5\n\ | |
1577 | ") | |
1578 | #else /* HAVE_PYTHON */ | |
1579 | _("\ | |
1580 | Start a Python interactive prompt.\n\ | |
1581 | \n\ | |
1582 | Python scripting is not supported in this copy of GDB.\n\ | |
1583 | This command is only a placeholder.") | |
1584 | #endif /* HAVE_PYTHON */ | |
1585 | ); | |
1586 | add_com_alias ("pi", "python-interactive", class_obscure, 1); | |
1587 | ||
d57a3c85 TJB |
1588 | add_com ("python", class_obscure, python_command, |
1589 | #ifdef HAVE_PYTHON | |
1590 | _("\ | |
1591 | Evaluate a Python command.\n\ | |
1592 | \n\ | |
1593 | The command can be given as an argument, for instance:\n\ | |
1594 | \n\ | |
1595 | python print 23\n\ | |
1596 | \n\ | |
1597 | If no argument is given, the following lines are read and used\n\ | |
1598 | as the Python commands. Type a line containing \"end\" to indicate\n\ | |
1599 | the end of the command.") | |
1600 | #else /* HAVE_PYTHON */ | |
1601 | _("\ | |
1602 | Evaluate a Python command.\n\ | |
1603 | \n\ | |
1604 | Python scripting is not supported in this copy of GDB.\n\ | |
1605 | This command is only a placeholder.") | |
1606 | #endif /* HAVE_PYTHON */ | |
1607 | ); | |
8315665e | 1608 | add_com_alias ("py", "python", class_obscure, 1); |
d57a3c85 | 1609 | |
713389e0 PM |
1610 | /* Add set/show python print-stack. */ |
1611 | add_prefix_cmd ("python", no_class, user_show_python, | |
1612 | _("Prefix command for python preference settings."), | |
1613 | &user_show_python_list, "show python ", 0, | |
1614 | &showlist); | |
1615 | ||
1616 | add_prefix_cmd ("python", no_class, user_set_python, | |
1617 | _("Prefix command for python preference settings."), | |
1618 | &user_set_python_list, "set python ", 0, | |
1619 | &setlist); | |
1620 | ||
80b6e756 PM |
1621 | add_setshow_enum_cmd ("print-stack", no_class, python_excp_enums, |
1622 | &gdbpy_should_print_stack, _("\ | |
1623 | Set mode for Python stack dump on error."), _("\ | |
1624 | Show the mode of Python stack printing on error."), _("\ | |
1625 | none == no stack or message will be printed.\n\ | |
1626 | full == a message and a stack will be printed.\n\ | |
1627 | message == an error message without a stack will be printed."), | |
1628 | NULL, NULL, | |
1629 | &user_set_python_list, | |
1630 | &user_show_python_list); | |
d57a3c85 TJB |
1631 | |
1632 | #ifdef HAVE_PYTHON | |
0c4a4063 DE |
1633 | #ifdef WITH_PYTHON_PATH |
1634 | /* Work around problem where python gets confused about where it is, | |
1635 | and then can't find its libraries, etc. | |
1636 | NOTE: Python assumes the following layout: | |
1637 | /foo/bin/python | |
1638 | /foo/lib/pythonX.Y/... | |
1639 | This must be done before calling Py_Initialize. */ | |
9a27f2c6 | 1640 | progname = concat (ldirname (python_libdir), SLASH_STRING, "bin", |
b36cec19 | 1641 | SLASH_STRING, "python", (char *) NULL); |
9a27f2c6 | 1642 | #ifdef IS_PY3K |
86f1abec | 1643 | oldloc = xstrdup (setlocale (LC_ALL, NULL)); |
9a27f2c6 PK |
1644 | setlocale (LC_ALL, ""); |
1645 | progsize = strlen (progname); | |
db0f0d0c | 1646 | progname_copy = (wchar_t *) PyMem_Malloc ((progsize + 1) * sizeof (wchar_t)); |
9a27f2c6 PK |
1647 | if (!progname_copy) |
1648 | { | |
86f1abec | 1649 | xfree (oldloc); |
9a27f2c6 PK |
1650 | fprintf (stderr, "out of memory\n"); |
1651 | return; | |
1652 | } | |
1653 | count = mbstowcs (progname_copy, progname, progsize + 1); | |
1654 | if (count == (size_t) -1) | |
1655 | { | |
86f1abec | 1656 | xfree (oldloc); |
9a27f2c6 PK |
1657 | fprintf (stderr, "Could not convert python path to string\n"); |
1658 | return; | |
1659 | } | |
1660 | setlocale (LC_ALL, oldloc); | |
86f1abec | 1661 | xfree (oldloc); |
9a27f2c6 PK |
1662 | |
1663 | /* Note that Py_SetProgramName expects the string it is passed to | |
1664 | remain alive for the duration of the program's execution, so | |
1665 | it is not freed after this call. */ | |
1666 | Py_SetProgramName (progname_copy); | |
1667 | #else | |
1668 | Py_SetProgramName (progname); | |
1669 | #endif | |
0c4a4063 DE |
1670 | #endif |
1671 | ||
d57a3c85 | 1672 | Py_Initialize (); |
ca30a762 | 1673 | PyEval_InitThreads (); |
d57a3c85 | 1674 | |
9a27f2c6 | 1675 | #ifdef IS_PY3K |
bcabf420 | 1676 | gdb_module = PyModule_Create (&python_GdbModuleDef); |
9a27f2c6 PK |
1677 | /* Add _gdb module to the list of known built-in modules. */ |
1678 | _PyImport_FixupBuiltin (gdb_module, "_gdb"); | |
1679 | #else | |
bcabf420 | 1680 | gdb_module = Py_InitModule ("_gdb", python_GdbMethods); |
9a27f2c6 | 1681 | #endif |
999633ed TT |
1682 | if (gdb_module == NULL) |
1683 | goto fail; | |
d57a3c85 TJB |
1684 | |
1685 | /* The casts to (char*) are for python 2.4. */ | |
999633ed TT |
1686 | if (PyModule_AddStringConstant (gdb_module, "VERSION", (char*) version) < 0 |
1687 | || PyModule_AddStringConstant (gdb_module, "HOST_CONFIG", | |
1688 | (char*) host_name) < 0 | |
1689 | || PyModule_AddStringConstant (gdb_module, "TARGET_CONFIG", | |
1690 | (char*) target_name) < 0) | |
1691 | goto fail; | |
f17618ea | 1692 | |
99c3dc11 | 1693 | /* Add stream constants. */ |
999633ed TT |
1694 | if (PyModule_AddIntConstant (gdb_module, "STDOUT", 0) < 0 |
1695 | || PyModule_AddIntConstant (gdb_module, "STDERR", 1) < 0 | |
1696 | || PyModule_AddIntConstant (gdb_module, "STDLOG", 2) < 0) | |
1697 | goto fail; | |
d57a3c85 | 1698 | |
621c8364 | 1699 | gdbpy_gdb_error = PyErr_NewException ("gdb.error", PyExc_RuntimeError, NULL); |
999633ed | 1700 | if (gdbpy_gdb_error == NULL |
aa36459a | 1701 | || gdb_pymodule_addobject (gdb_module, "error", gdbpy_gdb_error) < 0) |
999633ed | 1702 | goto fail; |
621c8364 TT |
1703 | |
1704 | gdbpy_gdb_memory_error = PyErr_NewException ("gdb.MemoryError", | |
1705 | gdbpy_gdb_error, NULL); | |
999633ed | 1706 | if (gdbpy_gdb_memory_error == NULL |
aa36459a TT |
1707 | || gdb_pymodule_addobject (gdb_module, "MemoryError", |
1708 | gdbpy_gdb_memory_error) < 0) | |
999633ed | 1709 | goto fail; |
621c8364 | 1710 | |
07ca107c | 1711 | gdbpy_gdberror_exc = PyErr_NewException ("gdb.GdbError", NULL, NULL); |
999633ed | 1712 | if (gdbpy_gdberror_exc == NULL |
aa36459a TT |
1713 | || gdb_pymodule_addobject (gdb_module, "GdbError", |
1714 | gdbpy_gdberror_exc) < 0) | |
999633ed | 1715 | goto fail; |
07ca107c | 1716 | |
037bbc8e | 1717 | gdbpy_initialize_gdb_readline (); |
999633ed TT |
1718 | |
1719 | if (gdbpy_initialize_auto_load () < 0 | |
1720 | || gdbpy_initialize_values () < 0 | |
1721 | || gdbpy_initialize_frames () < 0 | |
1722 | || gdbpy_initialize_commands () < 0 | |
1723 | || gdbpy_initialize_symbols () < 0 | |
1724 | || gdbpy_initialize_symtabs () < 0 | |
1725 | || gdbpy_initialize_blocks () < 0 | |
1726 | || gdbpy_initialize_functions () < 0 | |
1727 | || gdbpy_initialize_parameters () < 0 | |
1728 | || gdbpy_initialize_types () < 0 | |
1729 | || gdbpy_initialize_pspace () < 0 | |
1730 | || gdbpy_initialize_objfile () < 0 | |
1731 | || gdbpy_initialize_breakpoints () < 0 | |
1732 | || gdbpy_initialize_finishbreakpoints () < 0 | |
1733 | || gdbpy_initialize_lazy_string () < 0 | |
bc79de95 | 1734 | || gdbpy_initialize_linetable () < 0 |
999633ed TT |
1735 | || gdbpy_initialize_thread () < 0 |
1736 | || gdbpy_initialize_inferior () < 0 | |
1737 | || gdbpy_initialize_events () < 0 | |
1738 | || gdbpy_initialize_eventregistry () < 0 | |
1739 | || gdbpy_initialize_py_events () < 0 | |
1740 | || gdbpy_initialize_event () < 0 | |
1741 | || gdbpy_initialize_stop_event () < 0 | |
1742 | || gdbpy_initialize_signal_event () < 0 | |
1743 | || gdbpy_initialize_breakpoint_event () < 0 | |
1744 | || gdbpy_initialize_continue_event () < 0 | |
162078c8 NB |
1745 | || gdbpy_initialize_inferior_call_pre_event () < 0 |
1746 | || gdbpy_initialize_inferior_call_post_event () < 0 | |
1747 | || gdbpy_initialize_register_changed_event () < 0 | |
1748 | || gdbpy_initialize_memory_changed_event () < 0 | |
999633ed TT |
1749 | || gdbpy_initialize_exited_event () < 0 |
1750 | || gdbpy_initialize_thread_event () < 0 | |
1751 | || gdbpy_initialize_new_objfile_event () < 0 | |
4ffbba72 | 1752 | || gdbpy_initialize_clear_objfiles_event () < 0 |
883964a7 | 1753 | || gdbpy_initialize_arch () < 0 |
d11916aa SS |
1754 | || gdbpy_initialize_xmethods () < 0 |
1755 | || gdbpy_initialize_unwind () < 0) | |
999633ed | 1756 | goto fail; |
505500db | 1757 | |
a6bac58e | 1758 | gdbpy_to_string_cst = PyString_FromString ("to_string"); |
999633ed TT |
1759 | if (gdbpy_to_string_cst == NULL) |
1760 | goto fail; | |
a6bac58e | 1761 | gdbpy_children_cst = PyString_FromString ("children"); |
999633ed TT |
1762 | if (gdbpy_children_cst == NULL) |
1763 | goto fail; | |
a6bac58e | 1764 | gdbpy_display_hint_cst = PyString_FromString ("display_hint"); |
999633ed TT |
1765 | if (gdbpy_display_hint_cst == NULL) |
1766 | goto fail; | |
d8906c6f | 1767 | gdbpy_doc_cst = PyString_FromString ("__doc__"); |
999633ed TT |
1768 | if (gdbpy_doc_cst == NULL) |
1769 | goto fail; | |
967cf477 | 1770 | gdbpy_enabled_cst = PyString_FromString ("enabled"); |
999633ed TT |
1771 | if (gdbpy_enabled_cst == NULL) |
1772 | goto fail; | |
fb6a3ed3 | 1773 | gdbpy_value_cst = PyString_FromString ("value"); |
999633ed TT |
1774 | if (gdbpy_value_cst == NULL) |
1775 | goto fail; | |
d8906c6f | 1776 | |
9dea9163 DE |
1777 | /* Release the GIL while gdb runs. */ |
1778 | PyThreadState_Swap (NULL); | |
1779 | PyEval_ReleaseLock (); | |
1780 | ||
d7de8e3c | 1781 | make_final_cleanup (finalize_python, NULL); |
999633ed TT |
1782 | |
1783 | gdb_python_initialized = 1; | |
1784 | return; | |
1785 | ||
1786 | fail: | |
1787 | gdbpy_print_stack (); | |
1788 | /* Do not set 'gdb_python_initialized'. */ | |
1789 | return; | |
1790 | ||
9dea9163 DE |
1791 | #endif /* HAVE_PYTHON */ |
1792 | } | |
1793 | ||
1794 | #ifdef HAVE_PYTHON | |
1795 | ||
a7785f8c TT |
1796 | /* Helper function for gdbpy_finish_initialization. This does the |
1797 | work and then returns false if an error has occurred and must be | |
1798 | displayed, or true on success. */ | |
9dea9163 | 1799 | |
a7785f8c TT |
1800 | static bool |
1801 | do_finish_initialization (const struct extension_language_defn *extlang) | |
9dea9163 | 1802 | { |
b9516fa1 | 1803 | PyObject *m; |
b9516fa1 | 1804 | PyObject *sys_path; |
f17618ea | 1805 | |
b9516fa1 YPK |
1806 | /* Add the initial data-directory to sys.path. */ |
1807 | ||
a7785f8c TT |
1808 | std::string gdb_pythondir = (std::string (gdb_datadir) + SLASH_STRING |
1809 | + "python"); | |
b9516fa1 YPK |
1810 | |
1811 | sys_path = PySys_GetObject ("path"); | |
ca30a762 | 1812 | |
9a27f2c6 PK |
1813 | /* If sys.path is not defined yet, define it first. */ |
1814 | if (!(sys_path && PyList_Check (sys_path))) | |
1815 | { | |
1816 | #ifdef IS_PY3K | |
1817 | PySys_SetPath (L""); | |
1818 | #else | |
1819 | PySys_SetPath (""); | |
1820 | #endif | |
1821 | sys_path = PySys_GetObject ("path"); | |
1822 | } | |
256458bc | 1823 | if (sys_path && PyList_Check (sys_path)) |
b9516fa1 | 1824 | { |
a7785f8c TT |
1825 | gdbpy_ref pythondir (PyString_FromString (gdb_pythondir.c_str ())); |
1826 | if (pythondir == NULL || PyList_Insert (sys_path, 0, pythondir.get ())) | |
1827 | return false; | |
b9516fa1 YPK |
1828 | } |
1829 | else | |
a7785f8c | 1830 | return false; |
b9516fa1 YPK |
1831 | |
1832 | /* Import the gdb module to finish the initialization, and | |
1833 | add it to __main__ for convenience. */ | |
1834 | m = PyImport_AddModule ("__main__"); | |
1835 | if (m == NULL) | |
a7785f8c | 1836 | return false; |
b9516fa1 | 1837 | |
a7785f8c TT |
1838 | /* Keep the reference to gdb_python_module since it is in a global |
1839 | variable. */ | |
b9516fa1 YPK |
1840 | gdb_python_module = PyImport_ImportModule ("gdb"); |
1841 | if (gdb_python_module == NULL) | |
1842 | { | |
1843 | gdbpy_print_stack (); | |
41245087 DE |
1844 | /* This is passed in one call to warning so that blank lines aren't |
1845 | inserted between each line of text. */ | |
1846 | warning (_("\n" | |
1847 | "Could not load the Python gdb module from `%s'.\n" | |
1848 | "Limited Python support is available from the _gdb module.\n" | |
1849 | "Suggest passing --data-directory=/path/to/gdb/data-directory.\n"), | |
a7785f8c TT |
1850 | gdb_pythondir.c_str ()); |
1851 | /* We return "success" here as we've already emitted the | |
1852 | warning. */ | |
1853 | return true; | |
b9516fa1 YPK |
1854 | } |
1855 | ||
a7785f8c TT |
1856 | return gdb_pymodule_addobject (m, "gdb", gdb_python_module) >= 0; |
1857 | } | |
b9516fa1 | 1858 | |
a7785f8c TT |
1859 | /* Perform the remaining python initializations. |
1860 | These must be done after GDB is at least mostly initialized. | |
1861 | E.g., The "info pretty-printer" command needs the "info" prefix | |
1862 | command installed. | |
1863 | This is the extension_language_ops.finish_initialization "method". */ | |
b9516fa1 | 1864 | |
a7785f8c TT |
1865 | static void |
1866 | gdbpy_finish_initialization (const struct extension_language_defn *extlang) | |
1867 | { | |
1868 | gdbpy_enter enter_py (get_current_arch (), current_language); | |
b9516fa1 | 1869 | |
a7785f8c TT |
1870 | if (!do_finish_initialization (extlang)) |
1871 | { | |
1872 | gdbpy_print_stack (); | |
1873 | warning (_("internal error: Unhandled Python exception")); | |
1874 | } | |
9dea9163 | 1875 | } |
ca30a762 | 1876 | |
6dddc817 DE |
1877 | /* Return non-zero if Python has successfully initialized. |
1878 | This is the extension_languages_ops.initialized "method". */ | |
1879 | ||
1880 | static int | |
1881 | gdbpy_initialized (const struct extension_language_defn *extlang) | |
1882 | { | |
1883 | return gdb_python_initialized; | |
1884 | } | |
1885 | ||
d57a3c85 | 1886 | #endif /* HAVE_PYTHON */ |
12453b93 TJB |
1887 | |
1888 | \f | |
1889 | ||
9dea9163 | 1890 | #ifdef HAVE_PYTHON |
12453b93 | 1891 | |
bcabf420 | 1892 | PyMethodDef python_GdbMethods[] = |
12453b93 TJB |
1893 | { |
1894 | { "history", gdbpy_history, METH_VARARGS, | |
1895 | "Get a value from history" }, | |
bc9f0842 | 1896 | { "execute", (PyCFunction) execute_gdb_command, METH_VARARGS | METH_KEYWORDS, |
751e7549 PM |
1897 | "execute (command [, from_tty] [, to_string]) -> [String]\n\ |
1898 | Evaluate command, a string, as a gdb CLI command. Optionally returns\n\ | |
1899 | a Python String containing the output of the command if to_string is\n\ | |
1900 | set to True." }, | |
8f500870 | 1901 | { "parameter", gdbpy_parameter, METH_VARARGS, |
12453b93 TJB |
1902 | "Return a gdb parameter's value" }, |
1903 | ||
adc36818 PM |
1904 | { "breakpoints", gdbpy_breakpoints, METH_NOARGS, |
1905 | "Return a tuple of all breakpoint objects" }, | |
1906 | ||
b6313243 TT |
1907 | { "default_visualizer", gdbpy_default_visualizer, METH_VARARGS, |
1908 | "Find the default visualizer for a Value." }, | |
1909 | ||
fa33c3cd DE |
1910 | { "current_progspace", gdbpy_get_current_progspace, METH_NOARGS, |
1911 | "Return the current Progspace." }, | |
1912 | { "progspaces", gdbpy_progspaces, METH_NOARGS, | |
1913 | "Return a sequence of all progspaces." }, | |
1914 | ||
89c73ade TT |
1915 | { "current_objfile", gdbpy_get_current_objfile, METH_NOARGS, |
1916 | "Return the current Objfile being loaded, or None." }, | |
1917 | { "objfiles", gdbpy_objfiles, METH_NOARGS, | |
1918 | "Return a sequence of all loaded objfiles." }, | |
1919 | ||
d8e22779 TT |
1920 | { "newest_frame", gdbpy_newest_frame, METH_NOARGS, |
1921 | "newest_frame () -> gdb.Frame.\n\ | |
1922 | Return the newest frame object." }, | |
f8f6f20b TJB |
1923 | { "selected_frame", gdbpy_selected_frame, METH_NOARGS, |
1924 | "selected_frame () -> gdb.Frame.\n\ | |
1925 | Return the selected frame object." }, | |
1926 | { "frame_stop_reason_string", gdbpy_frame_stop_reason_string, METH_VARARGS, | |
1927 | "stop_reason_string (Integer) -> String.\n\ | |
1928 | Return a string explaining unwind stop reason." }, | |
1929 | ||
2c74e833 TT |
1930 | { "lookup_type", (PyCFunction) gdbpy_lookup_type, |
1931 | METH_VARARGS | METH_KEYWORDS, | |
1932 | "lookup_type (name [, block]) -> type\n\ | |
1933 | Return a Type corresponding to the given name." }, | |
f3e9a817 PM |
1934 | { "lookup_symbol", (PyCFunction) gdbpy_lookup_symbol, |
1935 | METH_VARARGS | METH_KEYWORDS, | |
1936 | "lookup_symbol (name [, block] [, domain]) -> (symbol, is_field_of_this)\n\ | |
1937 | Return a tuple with the symbol corresponding to the given name (or None) and\n\ | |
1938 | a boolean indicating if name is a field of the current implied argument\n\ | |
1939 | `this' (when the current language is object-oriented)." }, | |
6e6fbe60 DE |
1940 | { "lookup_global_symbol", (PyCFunction) gdbpy_lookup_global_symbol, |
1941 | METH_VARARGS | METH_KEYWORDS, | |
1942 | "lookup_global_symbol (name [, domain]) -> symbol\n\ | |
1943 | Return the symbol corresponding to the given name (or None)." }, | |
6dddd6a5 DE |
1944 | |
1945 | { "lookup_objfile", (PyCFunction) gdbpy_lookup_objfile, | |
1946 | METH_VARARGS | METH_KEYWORDS, | |
1947 | "lookup_objfile (name, [by_build_id]) -> objfile\n\ | |
1948 | Look up the specified objfile.\n\ | |
1949 | If by_build_id is True, the objfile is looked up by using name\n\ | |
1950 | as its build id." }, | |
1951 | ||
f3e9a817 PM |
1952 | { "block_for_pc", gdbpy_block_for_pc, METH_VARARGS, |
1953 | "Return the block containing the given pc value, or None." }, | |
cb2e07a6 PM |
1954 | { "solib_name", gdbpy_solib_name, METH_VARARGS, |
1955 | "solib_name (Long) -> String.\n\ | |
1956 | Return the name of the shared library holding a given address, or None." }, | |
1957 | { "decode_line", gdbpy_decode_line, METH_VARARGS, | |
1958 | "decode_line (String) -> Tuple. Decode a string argument the way\n\ | |
1959 | that 'break' or 'edit' does. Return a tuple containing two elements.\n\ | |
1960 | The first element contains any unparsed portion of the String parameter\n\ | |
1961 | (or None if the string was fully parsed). The second element contains\n\ | |
1962 | a tuple that contains all the locations that match, represented as\n\ | |
1963 | gdb.Symtab_and_line objects (or None)."}, | |
57a1d736 TT |
1964 | { "parse_and_eval", gdbpy_parse_and_eval, METH_VARARGS, |
1965 | "parse_and_eval (String) -> Value.\n\ | |
1966 | Parse String as an expression, evaluate it, and return the result as a Value." | |
1967 | }, | |
7efc75aa SCR |
1968 | { "find_pc_line", gdbpy_find_pc_line, METH_VARARGS, |
1969 | "find_pc_line (pc) -> Symtab_and_line.\n\ | |
1970 | Return the gdb.Symtab_and_line object corresponding to the pc value." }, | |
57a1d736 | 1971 | |
ca5c20b6 PM |
1972 | { "post_event", gdbpy_post_event, METH_VARARGS, |
1973 | "Post an event into gdb's event loop." }, | |
1974 | ||
f870a310 TT |
1975 | { "target_charset", gdbpy_target_charset, METH_NOARGS, |
1976 | "target_charset () -> string.\n\ | |
1977 | Return the name of the current target charset." }, | |
1978 | { "target_wide_charset", gdbpy_target_wide_charset, METH_NOARGS, | |
1979 | "target_wide_charset () -> string.\n\ | |
1980 | Return the name of the current target wide charset." }, | |
1981 | ||
07ca107c DE |
1982 | { "string_to_argv", gdbpy_string_to_argv, METH_VARARGS, |
1983 | "string_to_argv (String) -> Array.\n\ | |
1984 | Parse String and return an argv-like array.\n\ | |
1985 | Arguments are separate by spaces and may be quoted." | |
1986 | }, | |
99c3dc11 | 1987 | { "write", (PyCFunction)gdbpy_write, METH_VARARGS | METH_KEYWORDS, |
12453b93 | 1988 | "Write a string using gdb's filtered stream." }, |
99c3dc11 | 1989 | { "flush", (PyCFunction)gdbpy_flush, METH_VARARGS | METH_KEYWORDS, |
12453b93 | 1990 | "Flush gdb's filtered stdout stream." }, |
595939de PM |
1991 | { "selected_thread", gdbpy_selected_thread, METH_NOARGS, |
1992 | "selected_thread () -> gdb.InferiorThread.\n\ | |
1993 | Return the selected thread object." }, | |
2aa48337 KP |
1994 | { "selected_inferior", gdbpy_selected_inferior, METH_NOARGS, |
1995 | "selected_inferior () -> gdb.Inferior.\n\ | |
1996 | Return the selected inferior object." }, | |
595939de PM |
1997 | { "inferiors", gdbpy_inferiors, METH_NOARGS, |
1998 | "inferiors () -> (gdb.Inferior, ...).\n\ | |
1999 | Return a tuple containing all inferiors." }, | |
e0f3fd7c TT |
2000 | |
2001 | { "invalidate_cached_frames", gdbpy_invalidate_cached_frames, METH_NOARGS, | |
2002 | "invalidate_cached_frames () -> None.\n\ | |
2003 | Invalidate any cached frame objects in gdb.\n\ | |
2004 | Intended for internal use only." }, | |
2005 | ||
12453b93 TJB |
2006 | {NULL, NULL, 0, NULL} |
2007 | }; | |
2008 | ||
9a27f2c6 | 2009 | #ifdef IS_PY3K |
bcabf420 | 2010 | struct PyModuleDef python_GdbModuleDef = |
9a27f2c6 PK |
2011 | { |
2012 | PyModuleDef_HEAD_INIT, | |
2013 | "_gdb", | |
2014 | NULL, | |
256458bc | 2015 | -1, |
02e62830 | 2016 | python_GdbMethods, |
9a27f2c6 PK |
2017 | NULL, |
2018 | NULL, | |
2019 | NULL, | |
2020 | NULL | |
2021 | }; | |
2022 | #endif | |
12453b93 | 2023 | #endif /* HAVE_PYTHON */ |