1 /* Gdb/Python header for private use by Python module.
3 Copyright (C) 2008-2022 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/>. */
20 #ifndef PYTHON_PYTHON_INTERNAL_H
21 #define PYTHON_PYTHON_INTERNAL_H
23 #include "extension.h"
24 #include "extension-priv.h"
26 /* These WITH_* macros are defined by the CPython API checker that
27 comes with the Python plugin for GCC. See:
28 https://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html
29 The checker defines a WITH_ macro for each attribute it
30 exposes. Note that we intentionally do not use
31 'cpychecker_returns_borrowed_ref' -- that idiom is forbidden in
34 #ifdef WITH_CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF_ATTRIBUTE
35 #define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG) \
36 __attribute__ ((cpychecker_type_object_for_typedef (ARG)))
38 #define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG)
41 #ifdef WITH_CPYCHECKER_SETS_EXCEPTION_ATTRIBUTE
42 #define CPYCHECKER_SETS_EXCEPTION __attribute__ ((cpychecker_sets_exception))
44 #define CPYCHECKER_SETS_EXCEPTION
47 #ifdef WITH_CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION_ATTRIBUTE
48 #define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION \
49 __attribute__ ((cpychecker_negative_result_sets_exception))
51 #define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION
54 /* /usr/include/features.h on linux systems will define _POSIX_C_SOURCE
55 if it sees _GNU_SOURCE (which config.h will define).
56 pyconfig.h defines _POSIX_C_SOURCE to a different value than
57 /usr/include/features.h does causing compilation to fail.
58 To work around this, undef _POSIX_C_SOURCE before we include Python.h.
60 Same problem with _XOPEN_SOURCE. */
61 #undef _POSIX_C_SOURCE
64 /* On sparc-solaris, /usr/include/sys/feature_tests.h defines
65 _FILE_OFFSET_BITS, which pyconfig.h also defines. Same work
66 around technique as above. */
67 #undef _FILE_OFFSET_BITS
69 /* A kludge to avoid redefinition of snprintf on Windows by pyerrors.h. */
70 #if defined(_WIN32) && defined(HAVE_DECL_SNPRINTF)
71 #define HAVE_SNPRINTF 1
74 /* Another kludge to avoid compilation errors because MinGW defines
75 'hypot' to '_hypot', but the C++ headers says "using ::hypot". */
80 /* Request clean size types from Python. */
81 #define PY_SSIZE_T_CLEAN
83 /* Include the Python header files using angle brackets rather than
84 double quotes. On case-insensitive filesystems, this prevents us
85 from including our python/python.h header file. */
87 #include <frameobject.h>
90 #define Py_TPFLAGS_CHECKTYPES 0
92 #define PyInt_Check PyLong_Check
93 #define PyInt_AsLong PyLong_AsLong
94 #define PyInt_AsSsize_t PyLong_AsSsize_t
96 #define PyString_FromString PyUnicode_FromString
97 #define PyString_Decode PyUnicode_Decode
98 #define PyString_FromFormat PyUnicode_FromFormat
99 #define PyString_Check PyUnicode_Check
101 /* If Python.h does not define WITH_THREAD, then the various
102 GIL-related functions will not be defined. However,
103 PyGILState_STATE will be. */
105 #define PyGILState_Ensure() ((PyGILState_STATE) 0)
106 #define PyGILState_Release(ARG) ((void)(ARG))
107 #define PyEval_InitThreads()
108 #define PyThreadState_Swap(ARG) ((void)(ARG))
109 #define PyEval_ReleaseLock()
112 /* Python supplies HAVE_LONG_LONG and some `long long' support when it
113 is available. These defines let us handle the differences more
115 #ifdef HAVE_LONG_LONG
117 #define GDB_PY_LL_ARG "L"
118 #define GDB_PY_LLU_ARG "K"
119 typedef PY_LONG_LONG gdb_py_longest;
120 typedef unsigned PY_LONG_LONG gdb_py_ulongest;
121 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLongLong
123 #else /* HAVE_LONG_LONG */
125 #define GDB_PY_LL_ARG "L"
126 #define GDB_PY_LLU_ARG "K"
127 typedef long gdb_py_longest;
128 typedef unsigned long gdb_py_ulongest;
129 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLong
131 #endif /* HAVE_LONG_LONG */
133 #if PY_VERSION_HEX < 0x03020000
134 typedef long Py_hash_t;
137 /* PyMem_RawMalloc appeared in Python 3.4. For earlier versions, we can just
138 fall back to PyMem_Malloc. */
140 #if PY_VERSION_HEX < 0x03040000
141 #define PyMem_RawMalloc PyMem_Malloc
144 /* Python 2.6 did not wrap Py_DECREF in 'do {...} while (0)', leading
145 to 'suggest explicit braces to avoid ambiguous ‘else’' gcc errors.
146 Wrap it ourselves, so that callers don't need to care. */
149 gdb_Py_DECREF (void *op) /* ARI: editCase function */
155 #define Py_DECREF(op) gdb_Py_DECREF (op)
157 /* PyObject_CallMethod's 'method' and 'format' parameters were missing
158 the 'const' qualifier before Python 3.4. Hence, we wrap the
159 function in our own version to avoid errors with string literals.
160 Note, this is a variadic template because PyObject_CallMethod is a
161 varargs function and Python doesn't have a "PyObject_VaCallMethod"
162 variant taking a va_list that we could defer to instead. */
164 template<typename... Args>
165 static inline PyObject *
166 gdb_PyObject_CallMethod (PyObject *o, const char *method, const char *format,
167 Args... args) /* ARI: editCase function */
169 return PyObject_CallMethod (o,
170 const_cast<char *> (method),
171 const_cast<char *> (format),
175 #undef PyObject_CallMethod
176 #define PyObject_CallMethod gdb_PyObject_CallMethod
178 /* The 'name' parameter of PyErr_NewException was missing the 'const'
179 qualifier in Python <= 3.4. Hence, we wrap it in a function to
180 avoid errors when compiled with -Werror. */
182 static inline PyObject*
183 gdb_PyErr_NewException (const char *name, PyObject *base, PyObject *dict)
185 return PyErr_NewException (const_cast<char *> (name), base, dict);
188 #define PyErr_NewException gdb_PyErr_NewException
190 /* PySys_GetObject's 'name' parameter was missing the 'const'
191 qualifier before Python 3.4. Hence, we wrap it in a function to
192 avoid errors when compiled with -Werror. */
194 static inline PyObject *
195 gdb_PySys_GetObject (const char *name)
197 return PySys_GetObject (const_cast<char *> (name));
200 #define PySys_GetObject gdb_PySys_GetObject
202 /* PySys_SetPath's 'path' parameter was missing the 'const' qualifier
203 before Python 3.6. Hence, we wrap it in a function to avoid errors
204 when compiled with -Werror. */
206 # define GDB_PYSYS_SETPATH_CHAR wchar_t
209 gdb_PySys_SetPath (const GDB_PYSYS_SETPATH_CHAR *path)
211 PySys_SetPath (const_cast<GDB_PYSYS_SETPATH_CHAR *> (path));
214 #define PySys_SetPath gdb_PySys_SetPath
216 /* Wrap PyGetSetDef to allow convenient construction with string
217 literals. Unfortunately, PyGetSetDef's 'name' and 'doc' members
218 are 'char *' instead of 'const char *', meaning that in order to
219 list-initialize PyGetSetDef arrays with string literals (and
220 without the wrapping below) would require writing explicit 'char *'
221 casts. Instead, we extend PyGetSetDef and add constexpr
222 constructors that accept const 'name' and 'doc', hiding the ugly
223 casts here in a single place. */
225 struct gdb_PyGetSetDef : PyGetSetDef
227 constexpr gdb_PyGetSetDef (const char *name_, getter get_, setter set_,
228 const char *doc_, void *closure_)
229 : PyGetSetDef {const_cast<char *> (name_), get_, set_,
230 const_cast<char *> (doc_), closure_}
233 /* Alternative constructor that allows omitting the closure in list
235 constexpr gdb_PyGetSetDef (const char *name_, getter get_, setter set_,
237 : gdb_PyGetSetDef {name_, get_, set_, doc_, NULL}
240 /* Constructor for the sentinel entries. */
241 constexpr gdb_PyGetSetDef (std::nullptr_t)
242 : gdb_PyGetSetDef {NULL, NULL, NULL, NULL, NULL}
246 /* The 'keywords' parameter of PyArg_ParseTupleAndKeywords has type
247 'char **'. However, string literals are const in C++, and so to
248 avoid casting at every keyword array definition, we'll need to make
249 the keywords array an array of 'const char *'. To avoid having all
250 callers add a 'const_cast<char **>' themselves when passing such an
251 array through 'char **', we define our own version of
252 PyArg_ParseTupleAndKeywords here with a corresponding 'keywords'
253 parameter type that does the cast in a single place. (This is not
254 an overload of PyArg_ParseTupleAndKeywords in order to make it
255 clearer that we're calling our own function instead of a function
256 that exists in some newer Python version.) */
259 gdb_PyArg_ParseTupleAndKeywords (PyObject *args, PyObject *kw,
260 const char *format, const char **keywords, ...)
265 va_start (ap, keywords);
266 res = PyArg_VaParseTupleAndKeywords (args, kw, format,
267 const_cast<char **> (keywords),
274 /* In order to be able to parse symtab_and_line_to_sal_object function
275 a real symtab_and_line structure is needed. */
278 /* Also needed to parse enum var_types. */
280 #include "breakpoint.h"
282 enum gdbpy_iter_kind { iter_keys, iter_values, iter_items };
286 struct language_defn;
287 struct program_space;
291 extern int gdb_python_initialized;
293 extern PyObject *gdb_module;
294 extern PyObject *gdb_python_module;
295 extern PyTypeObject value_object_type
296 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("value_object");
297 extern PyTypeObject block_object_type
298 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("block_object");
299 extern PyTypeObject symbol_object_type
300 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("symbol_object");
301 extern PyTypeObject event_object_type
302 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
303 extern PyTypeObject breakpoint_object_type
304 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("breakpoint_object");
305 extern PyTypeObject frame_object_type
306 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("frame_object");
307 extern PyTypeObject thread_object_type
308 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("thread_object");
310 struct gdbpy_breakpoint_object
314 /* The breakpoint number according to gdb. */
317 /* The gdb breakpoint object, or NULL if the breakpoint has been
319 struct breakpoint *bp;
321 /* 1 is this is a FinishBreakpoint object, 0 otherwise. */
325 /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
326 exception if it is invalid. */
327 #define BPPY_REQUIRE_VALID(Breakpoint) \
329 if ((Breakpoint)->bp == NULL) \
330 return PyErr_Format (PyExc_RuntimeError, \
331 _("Breakpoint %d is invalid."), \
332 (Breakpoint)->number); \
335 /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
336 exception if it is invalid. This macro is for use in setter functions. */
337 #define BPPY_SET_REQUIRE_VALID(Breakpoint) \
339 if ((Breakpoint)->bp == NULL) \
341 PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \
342 (Breakpoint)->number); \
348 /* Variables used to pass information between the Breakpoint
349 constructor and the breakpoint-created hook function. */
350 extern gdbpy_breakpoint_object *bppy_pending_object;
357 /* The thread we represent. */
358 struct thread_info *thread;
360 /* The Inferior object to which this thread belongs. */
364 struct inferior_object;
366 extern struct cmd_list_element *set_python_list;
367 extern struct cmd_list_element *show_python_list;
369 /* extension_language_script_ops "methods". */
371 /* Return true if auto-loading Python scripts is enabled.
372 This is the extension_language_script_ops.auto_load_enabled "method". */
374 extern bool gdbpy_auto_load_enabled (const struct extension_language_defn *);
376 /* extension_language_ops "methods". */
378 extern enum ext_lang_rc gdbpy_apply_val_pretty_printer
379 (const struct extension_language_defn *,
381 struct ui_file *stream, int recurse,
382 const struct value_print_options *options,
383 const struct language_defn *language);
384 extern enum ext_lang_bt_status gdbpy_apply_frame_filter
385 (const struct extension_language_defn *,
386 struct frame_info *frame, frame_filter_flags flags,
387 enum ext_lang_frame_args args_type,
388 struct ui_out *out, int frame_low, int frame_high);
389 extern void gdbpy_preserve_values (const struct extension_language_defn *,
390 struct objfile *objfile,
391 htab_t copied_types);
392 extern enum ext_lang_bp_stop gdbpy_breakpoint_cond_says_stop
393 (const struct extension_language_defn *, struct breakpoint *);
394 extern int gdbpy_breakpoint_has_cond (const struct extension_language_defn *,
395 struct breakpoint *b);
397 extern enum ext_lang_rc gdbpy_get_matching_xmethod_workers
398 (const struct extension_language_defn *extlang,
399 struct type *obj_type, const char *method_name,
400 std::vector<xmethod_worker_up> *dm_vec);
403 PyObject *gdbpy_history (PyObject *self, PyObject *args);
404 PyObject *gdbpy_add_history (PyObject *self, PyObject *args);
405 extern PyObject *gdbpy_history_count (PyObject *self, PyObject *args);
406 PyObject *gdbpy_convenience_variable (PyObject *self, PyObject *args);
407 PyObject *gdbpy_set_convenience_variable (PyObject *self, PyObject *args);
408 PyObject *gdbpy_breakpoints (PyObject *, PyObject *);
409 PyObject *gdbpy_frame_stop_reason_string (PyObject *, PyObject *);
410 PyObject *gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw);
411 PyObject *gdbpy_lookup_global_symbol (PyObject *self, PyObject *args,
413 PyObject *gdbpy_lookup_static_symbol (PyObject *self, PyObject *args,
415 PyObject *gdbpy_lookup_static_symbols (PyObject *self, PyObject *args,
417 PyObject *gdbpy_start_recording (PyObject *self, PyObject *args);
418 PyObject *gdbpy_current_recording (PyObject *self, PyObject *args);
419 PyObject *gdbpy_stop_recording (PyObject *self, PyObject *args);
420 PyObject *gdbpy_newest_frame (PyObject *self, PyObject *args);
421 PyObject *gdbpy_selected_frame (PyObject *self, PyObject *args);
422 PyObject *gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw);
423 int gdbpy_is_field (PyObject *obj);
424 PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
425 const char *encoding,
427 PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
428 PyObject *gdbpy_create_ptid_object (ptid_t ptid);
429 PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
430 PyObject *gdbpy_selected_inferior (PyObject *self, PyObject *args);
431 PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
432 PyObject *gdbpy_parameter_value (const setting &var);
433 gdb::unique_xmalloc_ptr<char> gdbpy_parse_command_name
434 (const char *name, struct cmd_list_element ***base_list,
435 struct cmd_list_element **start_list);
436 PyObject *gdbpy_register_tui_window (PyObject *self, PyObject *args,
439 PyObject *symtab_and_line_to_sal_object (struct symtab_and_line sal);
440 PyObject *symtab_to_symtab_object (struct symtab *symtab);
441 PyObject *symbol_to_symbol_object (struct symbol *sym);
442 PyObject *block_to_block_object (const struct block *block,
443 struct objfile *objfile);
444 PyObject *value_to_value_object (struct value *v);
445 PyObject *value_to_value_object_no_release (struct value *v);
446 PyObject *type_to_type_object (struct type *);
447 PyObject *frame_info_to_frame_object (struct frame_info *frame);
448 PyObject *symtab_to_linetable_object (PyObject *symtab);
449 gdbpy_ref<> pspace_to_pspace_object (struct program_space *);
450 PyObject *pspy_get_printers (PyObject *, void *);
451 PyObject *pspy_get_frame_filters (PyObject *, void *);
452 PyObject *pspy_get_frame_unwinders (PyObject *, void *);
453 PyObject *pspy_get_xmethods (PyObject *, void *);
455 gdbpy_ref<> objfile_to_objfile_object (struct objfile *);
456 PyObject *objfpy_get_printers (PyObject *, void *);
457 PyObject *objfpy_get_frame_filters (PyObject *, void *);
458 PyObject *objfpy_get_frame_unwinders (PyObject *, void *);
459 PyObject *objfpy_get_xmethods (PyObject *, void *);
460 PyObject *gdbpy_lookup_objfile (PyObject *self, PyObject *args, PyObject *kw);
462 PyObject *gdbarch_to_arch_object (struct gdbarch *gdbarch);
463 PyObject *gdbpy_all_architecture_names (PyObject *self, PyObject *args);
465 PyObject *gdbpy_new_register_descriptor_iterator (struct gdbarch *gdbarch,
466 const char *group_name);
467 PyObject *gdbpy_new_reggroup_iterator (struct gdbarch *gdbarch);
469 gdbpy_ref<thread_object> create_thread_object (struct thread_info *tp);
470 gdbpy_ref<> thread_to_thread_object (thread_info *thr);;
471 gdbpy_ref<inferior_object> inferior_to_inferior_object (inferior *inf);
473 PyObject *gdbpy_buffer_to_membuf (gdb::unique_xmalloc_ptr<gdb_byte> buffer,
474 CORE_ADDR address, ULONGEST length);
476 struct process_stratum_target;
477 gdbpy_ref<> target_to_connection_object (process_stratum_target *target);
478 PyObject *gdbpy_connections (PyObject *self, PyObject *args);
480 const struct block *block_object_to_block (PyObject *obj);
481 struct symbol *symbol_object_to_symbol (PyObject *obj);
482 struct value *value_object_to_value (PyObject *self);
483 struct value *convert_value_from_python (PyObject *obj);
484 struct type *type_object_to_type (PyObject *obj);
485 struct symtab *symtab_object_to_symtab (PyObject *obj);
486 struct symtab_and_line *sal_object_to_symtab_and_line (PyObject *obj);
487 struct frame_info *frame_object_to_frame_info (PyObject *frame_obj);
488 struct gdbarch *arch_object_to_gdbarch (PyObject *obj);
490 /* Convert Python object OBJ to a program_space pointer. OBJ must be a
491 gdb.Progspace reference. Return nullptr if the gdb.Progspace is not
492 valid (see gdb.Progspace.is_valid), otherwise return the program_space
495 extern struct program_space *progspace_object_to_program_space (PyObject *obj);
497 void gdbpy_initialize_gdb_readline (void);
498 int gdbpy_initialize_auto_load (void)
499 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
500 int gdbpy_initialize_values (void)
501 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
502 int gdbpy_initialize_frames (void)
503 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
504 int gdbpy_initialize_instruction (void)
505 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
506 int gdbpy_initialize_btrace (void)
507 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
508 int gdbpy_initialize_record (void)
509 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
510 int gdbpy_initialize_symtabs (void)
511 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
512 int gdbpy_initialize_commands (void)
513 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
514 int gdbpy_initialize_symbols (void)
515 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
516 int gdbpy_initialize_symtabs (void)
517 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
518 int gdbpy_initialize_blocks (void)
519 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
520 int gdbpy_initialize_types (void)
521 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
522 int gdbpy_initialize_functions (void)
523 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
524 int gdbpy_initialize_pspace (void)
525 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
526 int gdbpy_initialize_objfile (void)
527 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
528 int gdbpy_initialize_breakpoints (void)
529 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
530 int gdbpy_initialize_finishbreakpoints (void)
531 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
532 int gdbpy_initialize_lazy_string (void)
533 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
534 int gdbpy_initialize_linetable (void)
535 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
536 int gdbpy_initialize_parameters (void)
537 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
538 int gdbpy_initialize_thread (void)
539 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
540 int gdbpy_initialize_inferior (void)
541 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
542 int gdbpy_initialize_eventregistry (void)
543 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
544 int gdbpy_initialize_event (void)
545 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
546 int gdbpy_initialize_py_events (void)
547 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
548 int gdbpy_initialize_arch (void)
549 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
550 int gdbpy_initialize_registers ()
551 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
552 int gdbpy_initialize_xmethods (void)
553 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
554 int gdbpy_initialize_unwind (void)
555 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
556 int gdbpy_initialize_tui ()
557 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
558 int gdbpy_initialize_membuf ()
559 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
560 int gdbpy_initialize_connection ()
561 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
562 int gdbpy_initialize_micommands (void)
563 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
564 void gdbpy_finalize_micommands ();
566 /* A wrapper for PyErr_Fetch that handles reference counting for the
568 class gdbpy_err_fetch
574 PyErr_Fetch (&m_error_type, &m_error_value, &m_error_traceback);
579 Py_XDECREF (m_error_type);
580 Py_XDECREF (m_error_value);
581 Py_XDECREF (m_error_traceback);
584 /* Call PyErr_Restore using the values stashed in this object.
585 After this call, this object is invalid and neither the to_string
586 nor restore methods may be used again. */
590 PyErr_Restore (m_error_type, m_error_value, m_error_traceback);
591 m_error_type = nullptr;
592 m_error_value = nullptr;
593 m_error_traceback = nullptr;
596 /* Return the string representation of the exception represented by
597 this object. If the result is NULL a python error occurred, the
598 caller must clear it. */
600 gdb::unique_xmalloc_ptr<char> to_string () const;
602 /* Return the string representation of the type of the exception
603 represented by this object. If the result is NULL a python error
604 occurred, the caller must clear it. */
606 gdb::unique_xmalloc_ptr<char> type_to_string () const;
608 /* Return true if the stored type matches TYPE, false otherwise. */
610 bool type_matches (PyObject *type) const
612 return PyErr_GivenExceptionMatches (m_error_type, type);
617 PyObject *m_error_type, *m_error_value, *m_error_traceback;
620 /* Called before entering the Python interpreter to install the
621 current language and architecture to be used for Python values.
622 Also set the active extension language for GDB so that SIGINT's
623 are directed our way, and if necessary install the right SIGINT
629 /* Set the ambient Python architecture to GDBARCH and the language
630 to LANGUAGE. If GDBARCH is nullptr, then the architecture will
631 be computed, when needed, using get_current_arch; see the
632 get_gdbarch method. If LANGUAGE is not nullptr, then the current
633 language at time of construction will be saved (to be restored on
634 destruction), and the current language will be set to
636 explicit gdbpy_enter (struct gdbarch *gdbarch = nullptr,
637 const struct language_defn *language = nullptr);
641 DISABLE_COPY_AND_ASSIGN (gdbpy_enter);
643 /* Return the current gdbarch, as known to the Python layer. This
644 is either python_gdbarch (which comes from the most recent call
645 to the gdbpy_enter constructor), or, if that is nullptr, the
646 result of get_current_arch. */
647 static struct gdbarch *get_gdbarch ();
649 /* Called only during gdb shutdown. This sets python_gdbarch to an
651 static void finalize ();
655 /* The current gdbarch, according to Python. This can be
657 static struct gdbarch *python_gdbarch;
659 struct active_ext_lang_state *m_previous_active;
660 PyGILState_STATE m_state;
661 struct gdbarch *m_gdbarch;
662 const struct language_defn *m_language;
664 /* An optional is used here because we don't want to call
665 PyErr_Fetch too early. */
666 gdb::optional<gdbpy_err_fetch> m_error;
669 /* Like gdbpy_enter, but takes a varobj. This is a subclass just to
670 make constructor delegation a little nicer. */
671 class gdbpy_enter_varobj : public gdbpy_enter
675 /* This is defined in varobj.c, where it can access varobj
677 gdbpy_enter_varobj (const struct varobj *var);
681 /* The opposite of gdb_enter: this releases the GIL around a region,
682 allowing other Python threads to run. No Python APIs may be used
683 while this is active. */
684 class gdbpy_allow_threads
688 gdbpy_allow_threads ()
689 : m_save (PyEval_SaveThread ())
691 gdb_assert (m_save != nullptr);
694 ~gdbpy_allow_threads ()
696 PyEval_RestoreThread (m_save);
699 DISABLE_COPY_AND_ASSIGN (gdbpy_allow_threads);
703 PyThreadState *m_save;
706 /* Use this after a TRY_EXCEPT to throw the appropriate Python
708 #define GDB_PY_HANDLE_EXCEPTION(Exception) \
710 if (Exception.reason < 0) \
712 gdbpy_convert_exception (Exception); \
717 /* Use this after a TRY_EXCEPT to throw the appropriate Python
718 exception. This macro is for use inside setter functions. */
719 #define GDB_PY_SET_HANDLE_EXCEPTION(Exception) \
721 if (Exception.reason < 0) \
723 gdbpy_convert_exception (Exception); \
728 int gdbpy_print_python_errors_p (void);
729 void gdbpy_print_stack (void);
730 void gdbpy_print_stack_or_quit ();
731 void gdbpy_handle_exception () ATTRIBUTE_NORETURN;
733 /* A wrapper around calling 'error'. Prefixes the error message with an
734 'Error occurred in Python' string. Use this in C++ code if we spot
735 something wrong with an object returned from Python code. The prefix
736 string gives the user a hint that the mistake is within Python code,
737 rather than some other part of GDB.
739 This always calls error, and never returns. */
741 void gdbpy_error (const char *fmt, ...)
742 ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
744 gdbpy_ref<> python_string_to_unicode (PyObject *obj);
745 gdb::unique_xmalloc_ptr<char> unicode_to_target_string (PyObject *unicode_str);
746 gdb::unique_xmalloc_ptr<char> python_string_to_target_string (PyObject *obj);
747 gdbpy_ref<> python_string_to_target_python_string (PyObject *obj);
748 gdb::unique_xmalloc_ptr<char> python_string_to_host_string (PyObject *obj);
749 gdbpy_ref<> host_string_to_python_string (const char *str);
750 int gdbpy_is_string (PyObject *obj);
751 gdb::unique_xmalloc_ptr<char> gdbpy_obj_to_string (PyObject *obj);
753 int gdbpy_is_lazy_string (PyObject *result);
754 void gdbpy_extract_lazy_string (PyObject *string, CORE_ADDR *addr,
755 struct type **str_type,
757 gdb::unique_xmalloc_ptr<char> *encoding);
759 int gdbpy_is_value_object (PyObject *obj);
761 /* Note that these are declared here, and not in python.h with the
762 other pretty-printer functions, because they refer to PyObject. */
763 gdbpy_ref<> apply_varobj_pretty_printer (PyObject *print_obj,
764 struct value **replacement,
765 struct ui_file *stream);
766 gdbpy_ref<> gdbpy_get_varobj_pretty_printer (struct value *value);
767 gdb::unique_xmalloc_ptr<char> gdbpy_get_display_hint (PyObject *printer);
768 PyObject *gdbpy_default_visualizer (PyObject *self, PyObject *args);
770 void bpfinishpy_pre_stop_hook (struct gdbpy_breakpoint_object *bp_obj);
771 void bpfinishpy_post_stop_hook (struct gdbpy_breakpoint_object *bp_obj);
773 extern PyObject *gdbpy_doc_cst;
774 extern PyObject *gdbpy_children_cst;
775 extern PyObject *gdbpy_to_string_cst;
776 extern PyObject *gdbpy_display_hint_cst;
777 extern PyObject *gdbpy_enabled_cst;
778 extern PyObject *gdbpy_value_cst;
780 /* Exception types. */
781 extern PyObject *gdbpy_gdb_error;
782 extern PyObject *gdbpy_gdb_memory_error;
783 extern PyObject *gdbpy_gdberror_exc;
785 extern void gdbpy_convert_exception (const struct gdb_exception &)
786 CPYCHECKER_SETS_EXCEPTION;
788 int get_addr_from_python (PyObject *obj, CORE_ADDR *addr)
789 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
791 gdbpy_ref<> gdb_py_object_from_longest (LONGEST l);
792 gdbpy_ref<> gdb_py_object_from_ulongest (ULONGEST l);
793 int gdb_py_int_as_long (PyObject *, long *);
795 PyObject *gdb_py_generic_dict (PyObject *self, void *closure);
797 int gdb_pymodule_addobject (PyObject *module, const char *name,
799 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
803 std::unique_ptr<varobj_iter> py_varobj_get_iterator (struct varobj *var,
806 /* Deleter for Py_buffer unique_ptr specialization. */
808 struct Py_buffer_deleter
810 void operator() (Py_buffer *b) const
812 PyBuffer_Release (b);
816 /* A unique_ptr specialization for Py_buffer. */
817 typedef std::unique_ptr<Py_buffer, Py_buffer_deleter> Py_buffer_up;
819 /* Parse a register number from PYO_REG_ID and place the register number
820 into *REG_NUM. The register is a register for GDBARCH.
822 If a register is parsed successfully then *REG_NUM will have been
823 updated, and true is returned. Otherwise the contents of *REG_NUM are
824 undefined, and false is returned.
826 The PYO_REG_ID object can be a string, the name of the register. This
827 is the slowest approach as GDB has to map the name to a number for each
828 call. Alternatively PYO_REG_ID can be an internal GDB register
829 number. This is quick but should not be encouraged as this means
830 Python scripts are now dependent on GDB's internal register numbering.
831 Final PYO_REG_ID can be a gdb.RegisterDescriptor object, these objects
832 can be looked up by name once, and then cache the register number so
833 should be as quick as using a register number. */
835 extern bool gdbpy_parse_register_id (struct gdbarch *gdbarch,
836 PyObject *pyo_reg_id, int *reg_num);
838 /* Return true if OBJ is a gdb.Architecture object, otherwise, return
841 extern bool gdbpy_is_architecture (PyObject *obj);
843 /* Return true if OBJ is a gdb.Progspace object, otherwise, return false. */
845 extern bool gdbpy_is_progspace (PyObject *obj);
847 #endif /* PYTHON_PYTHON_INTERNAL_H */