aboutsummaryrefslogtreecommitdiff
path: root/gdb/python/python-internal.h
blob: cc113cb7bfad92133568fab936af5703b958cda1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
/* Gdb/Python header for private use by Python module.

   Copyright (C) 2008-2020 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef PYTHON_PYTHON_INTERNAL_H
#define PYTHON_PYTHON_INTERNAL_H

#include "extension.h"
#include "extension-priv.h"

/* These WITH_* macros are defined by the CPython API checker that
   comes with the Python plugin for GCC.  See:
   https://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html
   The checker defines a WITH_ macro for each attribute it
   exposes.  Note that we intentionally do not use
   'cpychecker_returns_borrowed_ref' -- that idiom is forbidden in
   gdb.  */

#ifdef WITH_CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF_ATTRIBUTE
#define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG)		\
  __attribute__ ((cpychecker_type_object_for_typedef (ARG)))
#else
#define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG)
#endif

#ifdef WITH_CPYCHECKER_SETS_EXCEPTION_ATTRIBUTE
#define CPYCHECKER_SETS_EXCEPTION __attribute__ ((cpychecker_sets_exception))
#else
#define CPYCHECKER_SETS_EXCEPTION
#endif

#ifdef WITH_CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION_ATTRIBUTE
#define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION		\
  __attribute__ ((cpychecker_negative_result_sets_exception))
#else
#define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION
#endif

/* /usr/include/features.h on linux systems will define _POSIX_C_SOURCE
   if it sees _GNU_SOURCE (which config.h will define).
   pyconfig.h defines _POSIX_C_SOURCE to a different value than
   /usr/include/features.h does causing compilation to fail.
   To work around this, undef _POSIX_C_SOURCE before we include Python.h.

   Same problem with _XOPEN_SOURCE.  */
#undef _POSIX_C_SOURCE
#undef _XOPEN_SOURCE

/* On sparc-solaris, /usr/include/sys/feature_tests.h defines
   _FILE_OFFSET_BITS, which pyconfig.h also defines.  Same work
   around technique as above.  */
#undef _FILE_OFFSET_BITS

/* A kludge to avoid redefinition of snprintf on Windows by pyerrors.h.  */
#if defined(_WIN32) && defined(HAVE_DECL_SNPRINTF)
#define HAVE_SNPRINTF 1
#endif

/* Another kludge to avoid compilation errors because MinGW defines
   'hypot' to '_hypot', but the C++ headers says "using ::hypot".  */
#ifdef __MINGW32__
# define _hypot hypot
#endif

/* Request clean size types from Python.  */
#define PY_SSIZE_T_CLEAN

/* Include the Python header files using angle brackets rather than
   double quotes.  On case-insensitive filesystems, this prevents us
   from including our python/python.h header file.  */
#include <Python.h>
#include <frameobject.h>
#include "py-ref.h"

#if PY_MAJOR_VERSION >= 3
#define IS_PY3K 1
#endif

#ifdef IS_PY3K
#define Py_TPFLAGS_HAVE_ITER 0
#define Py_TPFLAGS_CHECKTYPES 0

#define PyInt_Check PyLong_Check
#define PyInt_AsLong PyLong_AsLong
#define PyInt_AsSsize_t PyLong_AsSsize_t

#define PyString_FromString PyUnicode_FromString
#define PyString_Decode PyUnicode_Decode
#define PyString_FromFormat PyUnicode_FromFormat
#define PyString_Check PyUnicode_Check
#endif

/* If Python.h does not define WITH_THREAD, then the various
   GIL-related functions will not be defined.  However,
   PyGILState_STATE will be.  */
#ifndef WITH_THREAD
#define PyGILState_Ensure() ((PyGILState_STATE) 0)
#define PyGILState_Release(ARG) ((void)(ARG))
#define PyEval_InitThreads()
#define PyThreadState_Swap(ARG) ((void)(ARG))
#define PyEval_ReleaseLock()
#endif

/* Python supplies HAVE_LONG_LONG and some `long long' support when it
   is available.  These defines let us handle the differences more
   cleanly.  */
#ifdef HAVE_LONG_LONG

#define GDB_PY_LL_ARG "L"
#define GDB_PY_LLU_ARG "K"
typedef PY_LONG_LONG gdb_py_longest;
typedef unsigned PY_LONG_LONG gdb_py_ulongest;
#define gdb_py_long_as_ulongest PyLong_AsUnsignedLongLong

#else /* HAVE_LONG_LONG */

#define GDB_PY_LL_ARG "L"
#define GDB_PY_LLU_ARG "K"
typedef long gdb_py_longest;
typedef unsigned long gdb_py_ulongest;
#define gdb_py_long_as_ulongest PyLong_AsUnsignedLong

#endif /* HAVE_LONG_LONG */

#if PY_VERSION_HEX < 0x03020000
typedef long Py_hash_t;
#endif

/* PyMem_RawMalloc appeared in Python 3.4.  For earlier versions, we can just
   fall back to PyMem_Malloc.  */

#if PY_VERSION_HEX < 0x03040000
#define PyMem_RawMalloc PyMem_Malloc
#endif

/* Python 2.6 did not wrap Py_DECREF in 'do {...} while (0)', leading
   to 'suggest explicit braces to avoid ambiguous ‘else’' gcc errors.
   Wrap it ourselves, so that callers don't need to care.  */

static inline void
gdb_Py_DECREF (void *op) /* ARI: editCase function */
{
  Py_DECREF (op);
}

#undef Py_DECREF
#define Py_DECREF(op) gdb_Py_DECREF (op)

/* PyObject_CallMethod's 'method' and 'format' parameters were missing
   the 'const' qualifier before Python 3.4.  Hence, we wrap the
   function in our own version to avoid errors with string literals.
   Note, this is a variadic template because PyObject_CallMethod is a
   varargs function and Python doesn't have a "PyObject_VaCallMethod"
   variant taking a va_list that we could defer to instead.  */

template<typename... Args>
static inline PyObject *
gdb_PyObject_CallMethod (PyObject *o, const char *method, const char *format,
			 Args... args) /* ARI: editCase function */
{
  return PyObject_CallMethod (o,
			      const_cast<char *> (method),
			      const_cast<char *> (format),
			      args...);
}

#undef PyObject_CallMethod
#define PyObject_CallMethod gdb_PyObject_CallMethod

/* The 'name' parameter of PyErr_NewException was missing the 'const'
   qualifier in Python <= 3.4.  Hence, we wrap it in a function to
   avoid errors when compiled with -Werror.  */

static inline PyObject*
gdb_PyErr_NewException (const char *name, PyObject *base, PyObject *dict)
{
  return PyErr_NewException (const_cast<char *> (name), base, dict);
}

#define PyErr_NewException gdb_PyErr_NewException

/* PySys_GetObject's 'name' parameter was missing the 'const'
   qualifier before Python 3.4.  Hence, we wrap it in a function to
   avoid errors when compiled with -Werror.  */

static inline PyObject *
gdb_PySys_GetObject (const char *name)
{
  return PySys_GetObject (const_cast<char *> (name));
}

#define PySys_GetObject gdb_PySys_GetObject

/* PySys_SetPath's 'path' parameter was missing the 'const' qualifier
   before Python 3.6.  Hence, we wrap it in a function to avoid errors
   when compiled with -Werror.  */

#ifdef IS_PY3K
# define GDB_PYSYS_SETPATH_CHAR wchar_t
#else
# define GDB_PYSYS_SETPATH_CHAR char
#endif

static inline void
gdb_PySys_SetPath (const GDB_PYSYS_SETPATH_CHAR *path)
{
  PySys_SetPath (const_cast<GDB_PYSYS_SETPATH_CHAR *> (path));
}

#define PySys_SetPath gdb_PySys_SetPath

/* Wrap PyGetSetDef to allow convenient construction with string
   literals.  Unfortunately, PyGetSetDef's 'name' and 'doc' members
   are 'char *' instead of 'const char *', meaning that in order to
   list-initialize PyGetSetDef arrays with string literals (and
   without the wrapping below) would require writing explicit 'char *'
   casts.  Instead, we extend PyGetSetDef and add constexpr
   constructors that accept const 'name' and 'doc', hiding the ugly
   casts here in a single place.  */

struct gdb_PyGetSetDef : PyGetSetDef
{
  constexpr gdb_PyGetSetDef (const char *name_, getter get_, setter set_,
			     const char *doc_, void *closure_)
    : PyGetSetDef {const_cast<char *> (name_), get_, set_,
		   const_cast<char *> (doc_), closure_}
  {}

  /* Alternative constructor that allows omitting the closure in list
     initialization.  */
  constexpr gdb_PyGetSetDef (const char *name_, getter get_, setter set_,
			     const char *doc_)
    : gdb_PyGetSetDef {name_, get_, set_, doc_, NULL}
  {}

  /* Constructor for the sentinel entries.  */
  constexpr gdb_PyGetSetDef (std::nullptr_t)
    : gdb_PyGetSetDef {NULL, NULL, NULL, NULL, NULL}
  {}
};

/* The 'keywords' parameter of PyArg_ParseTupleAndKeywords has type
   'char **'.  However, string literals are const in C++, and so to
   avoid casting at every keyword array definition, we'll need to make
   the keywords array an array of 'const char *'.  To avoid having all
   callers add a 'const_cast<char **>' themselves when passing such an
   array through 'char **', we define our own version of
   PyArg_ParseTupleAndKeywords here with a corresponding 'keywords'
   parameter type that does the cast in a single place.  (This is not
   an overload of PyArg_ParseTupleAndKeywords in order to make it
   clearer that we're calling our own function instead of a function
   that exists in some newer Python version.)  */

static inline int
gdb_PyArg_ParseTupleAndKeywords (PyObject *args, PyObject *kw,
				 const char *format, const char **keywords, ...)
{
  va_list ap;
  int res;

  va_start (ap, keywords);
  res = PyArg_VaParseTupleAndKeywords (args, kw, format,
				       const_cast<char **> (keywords),
				       ap);
  va_end (ap);

  return res;
}

/* In order to be able to parse symtab_and_line_to_sal_object function
   a real symtab_and_line structure is needed.  */
#include "symtab.h"

/* Also needed to parse enum var_types. */
#include "command.h"
#include "breakpoint.h"

enum gdbpy_iter_kind { iter_keys, iter_values, iter_items };

struct block;
struct value;
struct language_defn;
struct program_space;
struct bpstats;
struct inferior;

extern int gdb_python_initialized;

extern PyObject *gdb_module;
extern PyObject *gdb_python_module;
extern PyTypeObject value_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("value_object");
extern PyTypeObject block_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("block_object");
extern PyTypeObject symbol_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("symbol_object");
extern PyTypeObject event_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
extern PyTypeObject breakpoint_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("breakpoint_object");
extern PyTypeObject frame_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("frame_object");
extern PyTypeObject thread_object_type
    CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("thread_object");

typedef struct gdbpy_breakpoint_object
{
  PyObject_HEAD

  /* The breakpoint number according to gdb.  */
  int number;

  /* The gdb breakpoint object, or NULL if the breakpoint has been
     deleted.  */
  struct breakpoint *bp;

  /* 1 is this is a FinishBreakpoint object, 0 otherwise.  */
  int is_finish_bp;
} gdbpy_breakpoint_object;

/* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
   exception if it is invalid.  */
#define BPPY_REQUIRE_VALID(Breakpoint)                                  \
    do {                                                                \
      if ((Breakpoint)->bp == NULL)                                     \
	return PyErr_Format (PyExc_RuntimeError,                        \
			     _("Breakpoint %d is invalid."),            \
			     (Breakpoint)->number);                     \
    } while (0)

/* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
   exception if it is invalid.  This macro is for use in setter functions.  */
#define BPPY_SET_REQUIRE_VALID(Breakpoint)                              \
    do {                                                                \
      if ((Breakpoint)->bp == NULL)                                     \
	{                                                               \
	  PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \
			(Breakpoint)->number);                          \
	  return -1;                                                    \
	}                                                               \
    } while (0)


/* Variables used to pass information between the Breakpoint
   constructor and the breakpoint-created hook function.  */
extern gdbpy_breakpoint_object *bppy_pending_object;


typedef struct
{
  PyObject_HEAD

  /* The thread we represent.  */
  struct thread_info *thread;

  /* The Inferior object to which this thread belongs.  */
  PyObject *inf_obj;
} thread_object;

struct inferior_object;

extern struct cmd_list_element *set_python_list;
extern struct cmd_list_element *show_python_list;

/* extension_language_script_ops "methods".  */

extern int gdbpy_auto_load_enabled (const struct extension_language_defn *);

/* extension_language_ops "methods".  */

extern enum ext_lang_rc gdbpy_apply_val_pretty_printer
  (const struct extension_language_defn *,
   struct value *value,
   struct ui_file *stream, int recurse,
   const struct value_print_options *options,
   const struct language_defn *language);
extern enum ext_lang_bt_status gdbpy_apply_frame_filter
  (const struct extension_language_defn *,
   struct frame_info *frame, frame_filter_flags flags,
   enum ext_lang_frame_args args_type,
   struct ui_out *out, int frame_low, int frame_high);
extern void gdbpy_preserve_values (const struct extension_language_defn *,
				   struct objfile *objfile,
				   htab_t copied_types);
extern enum ext_lang_bp_stop gdbpy_breakpoint_cond_says_stop
  (const struct extension_language_defn *, struct breakpoint *);
extern int gdbpy_breakpoint_has_cond (const struct extension_language_defn *,
				      struct breakpoint *b);

extern enum ext_lang_rc gdbpy_get_matching_xmethod_workers
  (const struct extension_language_defn *extlang,
   struct type *obj_type, const char *method_name,
   std::vector<xmethod_worker_up> *dm_vec);


PyObject *gdbpy_history (PyObject *self, PyObject *args);
PyObject *gdbpy_convenience_variable (PyObject *self, PyObject *args);
PyObject *gdbpy_set_convenience_variable (PyObject *self, PyObject *args);
PyObject *gdbpy_breakpoints (PyObject *, PyObject *);
PyObject *gdbpy_frame_stop_reason_string (PyObject *, PyObject *);
PyObject *gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw);
PyObject *gdbpy_lookup_global_symbol (PyObject *self, PyObject *args,
				      PyObject *kw);
PyObject *gdbpy_lookup_static_symbol (PyObject *self, PyObject *args,
				      PyObject *kw);
PyObject *gdbpy_lookup_static_symbols (PyObject *self, PyObject *args,
					   PyObject *kw);
PyObject *gdbpy_start_recording (PyObject *self, PyObject *args);
PyObject *gdbpy_current_recording (PyObject *self, PyObject *args);
PyObject *gdbpy_stop_recording (PyObject *self, PyObject *args);
PyObject *gdbpy_newest_frame (PyObject *self, PyObject *args);
PyObject *gdbpy_selected_frame (PyObject *self, PyObject *args);
PyObject *gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw);
int gdbpy_is_field (PyObject *obj);
PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
					   const char *encoding,
					   struct type *type);
PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
PyObject *gdbpy_create_ptid_object (ptid_t ptid);
PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
PyObject *gdbpy_selected_inferior (PyObject *self, PyObject *args);
PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
PyObject *gdbpy_parameter_value (enum var_types type, void *var);
char *gdbpy_parse_command_name (const char *name,
				struct cmd_list_element ***base_list,
				struct cmd_list_element **start_list);
PyObject *gdbpy_register_tui_window (PyObject *self, PyObject *args,
				     PyObject *kw);

PyObject *symtab_and_line_to_sal_object (struct symtab_and_line sal);
PyObject *symtab_to_symtab_object (struct symtab *symtab);
PyObject *symbol_to_symbol_object (struct symbol *sym);
PyObject *block_to_block_object (const struct block *block,
				 struct objfile *objfile);
PyObject *value_to_value_object (struct value *v);
PyObject *value_to_value_object_no_release (struct value *v);
PyObject *type_to_type_object (struct type *);
PyObject *frame_info_to_frame_object (struct frame_info *frame);
PyObject *symtab_to_linetable_object (PyObject *symtab);
gdbpy_ref<> pspace_to_pspace_object (struct program_space *);
PyObject *pspy_get_printers (PyObject *, void *);
PyObject *pspy_get_frame_filters (PyObject *, void *);
PyObject *pspy_get_frame_unwinders (PyObject *, void *);
PyObject *pspy_get_xmethods (PyObject *, void *);

gdbpy_ref<> objfile_to_objfile_object (struct objfile *);
PyObject *objfpy_get_printers (PyObject *, void *);
PyObject *objfpy_get_frame_filters (PyObject *, void *);
PyObject *objfpy_get_frame_unwinders (PyObject *, void *);
PyObject *objfpy_get_xmethods (PyObject *, void *);
PyObject *gdbpy_lookup_objfile (PyObject *self, PyObject *args, PyObject *kw);

PyObject *gdbarch_to_arch_object (struct gdbarch *gdbarch);

PyObject *gdbpy_new_register_descriptor_iterator (struct gdbarch *gdbarch,
						  const char *group_name);
PyObject *gdbpy_new_reggroup_iterator (struct gdbarch *gdbarch);

gdbpy_ref<thread_object> create_thread_object (struct thread_info *tp);
gdbpy_ref<> thread_to_thread_object (thread_info *thr);;
gdbpy_ref<inferior_object> inferior_to_inferior_object (inferior *inf);

const struct block *block_object_to_block (PyObject *obj);
struct symbol *symbol_object_to_symbol (PyObject *obj);
struct value *value_object_to_value (PyObject *self);
struct value *convert_value_from_python (PyObject *obj);
struct type *type_object_to_type (PyObject *obj);
struct symtab *symtab_object_to_symtab (PyObject *obj);
struct symtab_and_line *sal_object_to_symtab_and_line (PyObject *obj);
struct frame_info *frame_object_to_frame_info (PyObject *frame_obj);
struct gdbarch *arch_object_to_gdbarch (PyObject *obj);

void gdbpy_initialize_gdb_readline (void);
int gdbpy_initialize_auto_load (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_values (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_frames (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_instruction (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_btrace (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_record (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_symtabs (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_commands (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_symbols (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_symtabs (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_blocks (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_types (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_functions (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_pspace (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_objfile (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_breakpoints (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_finishbreakpoints (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_lazy_string (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_linetable (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_parameters (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_thread (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_inferior (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_eventregistry (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_event (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_py_events (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_arch (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_registers ()
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_xmethods (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_unwind (void)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
int gdbpy_initialize_tui ()
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;

/* A wrapper for PyErr_Fetch that handles reference counting for the
   caller.  */
class gdbpy_err_fetch
{
public:

  gdbpy_err_fetch ()
  {
    PyErr_Fetch (&m_error_type, &m_error_value, &m_error_traceback);
  }

  ~gdbpy_err_fetch ()
  {
    Py_XDECREF (m_error_type);
    Py_XDECREF (m_error_value);
    Py_XDECREF (m_error_traceback);
  }

  /* Call PyErr_Restore using the values stashed in this object.
     After this call, this object is invalid and neither the to_string
     nor restore methods may be used again.  */

  void restore ()
  {
    PyErr_Restore (m_error_type, m_error_value, m_error_traceback);
    m_error_type = nullptr;
    m_error_value = nullptr;
    m_error_traceback = nullptr;
  }

  /* Return the string representation of the exception represented by
     this object.  If the result is NULL a python error occurred, the
     caller must clear it.  */

  gdb::unique_xmalloc_ptr<char> to_string () const;

  /* Return the string representation of the type of the exception
     represented by this object.  If the result is NULL a python error
     occurred, the caller must clear it.  */

  gdb::unique_xmalloc_ptr<char> type_to_string () const;

  /* Return true if the stored type matches TYPE, false otherwise.  */

  bool type_matches (PyObject *type) const
  {
    return PyErr_GivenExceptionMatches (m_error_type, type);
  }

private:

  PyObject *m_error_type, *m_error_value, *m_error_traceback;
};

/* Called before entering the Python interpreter to install the
   current language and architecture to be used for Python values.
   Also set the active extension language for GDB so that SIGINT's
   are directed our way, and if necessary install the right SIGINT
   handler.  */
class gdbpy_enter
{
 public:

  gdbpy_enter (struct gdbarch *gdbarch, const struct language_defn *language);

  ~gdbpy_enter ();

  DISABLE_COPY_AND_ASSIGN (gdbpy_enter);

 private:

  struct active_ext_lang_state *m_previous_active;
  PyGILState_STATE m_state;
  struct gdbarch *m_gdbarch;
  const struct language_defn *m_language;

  /* An optional is used here because we don't want to call
     PyErr_Fetch too early.  */
  gdb::optional<gdbpy_err_fetch> m_error;
};

/* Like gdbpy_enter, but takes a varobj.  This is a subclass just to
   make constructor delegation a little nicer.  */
class gdbpy_enter_varobj : public gdbpy_enter
{
 public:

  /* This is defined in varobj.c, where it can access varobj
     internals.  */
  gdbpy_enter_varobj (const struct varobj *var);

};

/* The opposite of gdb_enter: this releases the GIL around a region,
   allowing other Python threads to run.  No Python APIs may be used
   while this is active.  */
class gdbpy_allow_threads
{
public:

  gdbpy_allow_threads ()
    : m_save (PyEval_SaveThread ())
  {
    gdb_assert (m_save != nullptr);
  }

  ~gdbpy_allow_threads ()
  {
    PyEval_RestoreThread (m_save);
  }

  DISABLE_COPY_AND_ASSIGN (gdbpy_allow_threads);

private:

  PyThreadState *m_save;
};

extern struct gdbarch *python_gdbarch;
extern const struct language_defn *python_language;

/* Use this after a TRY_EXCEPT to throw the appropriate Python
   exception.  */
#define GDB_PY_HANDLE_EXCEPTION(Exception)	\
  do {						\
    if (Exception.reason < 0)			\
      {						\
	gdbpy_convert_exception (Exception);	\
	return NULL;				\
      }						\
  } while (0)

/* Use this after a TRY_EXCEPT to throw the appropriate Python
   exception.  This macro is for use inside setter functions.  */
#define GDB_PY_SET_HANDLE_EXCEPTION(Exception)				\
    do {								\
      if (Exception.reason < 0)						\
	{								\
	  gdbpy_convert_exception (Exception);				\
	  return -1;							\
	}								\
    } while (0)

int gdbpy_print_python_errors_p (void);
void gdbpy_print_stack (void);
void gdbpy_print_stack_or_quit ();
void gdbpy_handle_exception () ATTRIBUTE_NORETURN;

gdbpy_ref<> python_string_to_unicode (PyObject *obj);
gdb::unique_xmalloc_ptr<char> unicode_to_target_string (PyObject *unicode_str);
gdb::unique_xmalloc_ptr<char> python_string_to_target_string (PyObject *obj);
gdbpy_ref<> python_string_to_target_python_string (PyObject *obj);
gdb::unique_xmalloc_ptr<char> python_string_to_host_string (PyObject *obj);
gdbpy_ref<> host_string_to_python_string (const char *str);
int gdbpy_is_string (PyObject *obj);
gdb::unique_xmalloc_ptr<char> gdbpy_obj_to_string (PyObject *obj);

int gdbpy_is_lazy_string (PyObject *result);
void gdbpy_extract_lazy_string (PyObject *string, CORE_ADDR *addr,
				struct type **str_type,
				long *length,
				gdb::unique_xmalloc_ptr<char> *encoding);

int gdbpy_is_value_object (PyObject *obj);

/* Note that these are declared here, and not in python.h with the
   other pretty-printer functions, because they refer to PyObject.  */
gdbpy_ref<> apply_varobj_pretty_printer (PyObject *print_obj,
					 struct value **replacement,
					 struct ui_file *stream);
gdbpy_ref<> gdbpy_get_varobj_pretty_printer (struct value *value);
gdb::unique_xmalloc_ptr<char> gdbpy_get_display_hint (PyObject *printer);
PyObject *gdbpy_default_visualizer (PyObject *self, PyObject *args);

void bpfinishpy_pre_stop_hook (struct gdbpy_breakpoint_object *bp_obj);
void bpfinishpy_post_stop_hook (struct gdbpy_breakpoint_object *bp_obj);

extern PyObject *gdbpy_doc_cst;
extern PyObject *gdbpy_children_cst;
extern PyObject *gdbpy_to_string_cst;
extern PyObject *gdbpy_display_hint_cst;
extern PyObject *gdbpy_enabled_cst;
extern PyObject *gdbpy_value_cst;

/* Exception types.  */
extern PyObject *gdbpy_gdb_error;
extern PyObject *gdbpy_gdb_memory_error;
extern PyObject *gdbpy_gdberror_exc;

extern void gdbpy_convert_exception (const struct gdb_exception &)
    CPYCHECKER_SETS_EXCEPTION;

int get_addr_from_python (PyObject *obj, CORE_ADDR *addr)
    CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;

gdbpy_ref<> gdb_py_object_from_longest (LONGEST l);
gdbpy_ref<> gdb_py_object_from_ulongest (ULONGEST l);
int gdb_py_int_as_long (PyObject *, long *);

PyObject *gdb_py_generic_dict (PyObject *self, void *closure);

int gdb_pymodule_addobject (PyObject *module, const char *name,
			    PyObject *object)
  CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;

struct varobj_iter;
struct varobj;
struct varobj_iter *py_varobj_get_iterator (struct varobj *var,
					    PyObject *printer);

/* Deleter for Py_buffer unique_ptr specialization.  */

struct Py_buffer_deleter
{
  void operator() (Py_buffer *b) const
  {
    PyBuffer_Release (b);
  }
};

/* A unique_ptr specialization for Py_buffer.  */
typedef std::unique_ptr<Py_buffer, Py_buffer_deleter> Py_buffer_up;

/* Parse a register number from PYO_REG_ID and place the register number
   into *REG_NUM.  The register is a register for GDBARCH.

   If a register is parsed successfully then *REG_NUM will have been
   updated, and true is returned.  Otherwise the contents of *REG_NUM are
   undefined, and false is returned.

   The PYO_REG_ID object can be a string, the name of the register.  This
   is the slowest approach as GDB has to map the name to a number for each
   call.  Alternatively PYO_REG_ID can be an internal GDB register
   number.  This is quick but should not be encouraged as this means
   Python scripts are now dependent on GDB's internal register numbering.
   Final PYO_REG_ID can be a gdb.RegisterDescriptor object, these objects
   can be looked up by name once, and then cache the register number so
   should be as quick as using a register number.  */

extern bool gdbpy_parse_register_id (struct gdbarch *gdbarch,
				     PyObject *pyo_reg_id, int *reg_num);

#endif /* PYTHON_PYTHON_INTERNAL_H */