gdb/python/python-internal.h

   1 /* Gdb/Python header for private use by Python module.
   2
   3    Copyright (C) 2008-2013 Free Software Foundation, Inc.
   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 #ifndef GDB_PYTHON_INTERNAL_H
  21 #define GDB_PYTHON_INTERNAL_H
  22
  23 /* These WITH_* macros are defined by the CPython API checker that
  24    comes with the Python plugin for GCC.  See:
  25    https://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html
  26    The checker defines a WITH_ macro for each attribute it
  27    exposes.  */
  28
  29 #ifdef WITH_CPYCHECKER_RETURNS_BORROWED_REF_ATTRIBUTE
  30 #define CPYCHECKER_RETURNS_BORROWED_REF                 \
  31   __attribute__ ((cpychecker_returns_borrowed_ref))
  32 #else
  33 #define CPYCHECKER_RETURNS_BORROWED_REF
  34 #endif
  35
  36 #ifdef WITH_CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF_ATTRIBUTE
  37 #define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG)         \
  38   __attribute__ ((cpychecker_type_object_for_typedef (ARG)))
  39 #else
  40 #define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(ARG)
  41 #endif
  42
  43 #include <stdio.h>
  44
  45 /* Python 2.4 doesn't include stdint.h soon enough to get {u,}intptr_t
  46    needed by pyport.h.  */
  47 #include <stdint.h>
  48
  49 /* /usr/include/features.h on linux systems will define _POSIX_C_SOURCE
  50    if it sees _GNU_SOURCE (which config.h will define).
  51    pyconfig.h defines _POSIX_C_SOURCE to a different value than
  52    /usr/include/features.h does causing compilation to fail.
  53    To work around this, undef _POSIX_C_SOURCE before we include Python.h.
  54
  55    Same problem with _XOPEN_SOURCE.  */
  56 #undef _POSIX_C_SOURCE
  57 #undef _XOPEN_SOURCE
  58
  59 /* On sparc-solaris, /usr/include/sys/feature_tests.h defines
  60    _FILE_OFFSET_BITS, which pyconfig.h also defines.  Same work
  61    around technique as above.  */
  62 #undef _FILE_OFFSET_BITS
  63
  64 /* A kludge to avoid redefinition of snprintf on Windows by pyerrors.h.  */
  65 #if defined(_WIN32) && defined(HAVE_DECL_SNPRINTF)
  66 #define HAVE_SNPRINTF 1
  67 #endif
  68
  69 /* Request clean size types from Python.  */
  70 #define PY_SSIZE_T_CLEAN
  71
  72 /* Include the Python header files using angle brackets rather than
  73    double quotes.  On case-insensitive filesystems, this prevents us
  74    from including our python/python.h header file.  */
  75 #include <Python.h>
  76 #include <frameobject.h>
  77
  78 #if PY_MAJOR_VERSION >= 3
  79 #define IS_PY3K 1
  80 #endif
  81
  82 #ifdef IS_PY3K
  83 #define Py_TPFLAGS_HAVE_ITER 0
  84 #define Py_TPFLAGS_CHECKTYPES 0
  85
  86 #define PyInt_Check PyLong_Check
  87 #define PyInt_FromLong PyLong_FromLong
  88 #define PyInt_AsLong PyLong_AsLong
  89
  90 #define PyString_FromString PyUnicode_FromString
  91 #define PyString_Decode PyUnicode_Decode
  92 #define PyString_FromFormat PyUnicode_FromFormat
  93 #define PyString_Check PyUnicode_Check
  94 #endif
  95
  96 #if HAVE_LIBPYTHON2_4
  97 /* Py_ssize_t is not defined until 2.5.
  98    Logical type for Py_ssize_t is Py_intptr_t, but that fails in 64-bit
  99    compilation due to several apparent mistakes in python2.4 API, so we
 100    use 'int' instead.  */
 101 typedef int Py_ssize_t;
 102 #endif
 103
 104 #ifndef PyVarObject_HEAD_INIT
 105 /* Python 2.4 does not define PyVarObject_HEAD_INIT.  */
 106 #define PyVarObject_HEAD_INIT(type, size)       \
 107     PyObject_HEAD_INIT(type) size,
 108
 109 #endif
 110
 111 #ifndef Py_TYPE
 112 /* Python 2.4 does not define Py_TYPE.  */
 113 #define Py_TYPE(ob)             (((PyObject*)(ob))->ob_type)
 114 #endif
 115
 116 /* If Python.h does not define WITH_THREAD, then the various
 117    GIL-related functions will not be defined.  However,
 118    PyGILState_STATE will be.  */
 119 #ifndef WITH_THREAD
 120 #define PyGILState_Ensure() ((PyGILState_STATE) 0)
 121 #define PyGILState_Release(ARG) ((void)(ARG))
 122 #define PyEval_InitThreads()
 123 #define PyThreadState_Swap(ARG) ((void)(ARG))
 124 #define PyEval_ReleaseLock()
 125 #endif
 126
 127 /* Python supplies HAVE_LONG_LONG and some `long long' support when it
 128    is available.  These defines let us handle the differences more
 129    cleanly.  */
 130 #ifdef HAVE_LONG_LONG
 131
 132 #define GDB_PY_LL_ARG "L"
 133 #define GDB_PY_LLU_ARG "K"
 134 typedef PY_LONG_LONG gdb_py_longest;
 135 typedef unsigned PY_LONG_LONG gdb_py_ulongest;
 136 #define gdb_py_long_from_longest PyLong_FromLongLong
 137 #define gdb_py_long_from_ulongest PyLong_FromUnsignedLongLong
 138 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLongLong
 139
 140 #else /* HAVE_LONG_LONG */
 141
 142 #define GDB_PY_LL_ARG "L"
 143 #define GDB_PY_LLU_ARG "K"
 144 typedef long gdb_py_longest;
 145 typedef unsigned long gdb_py_ulongest;
 146 #define gdb_py_long_from_longest PyLong_FromLong
 147 #define gdb_py_long_from_ulongest PyLong_FromUnsignedLong
 148 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLong
 149
 150 #endif /* HAVE_LONG_LONG */
 151
 152
 153 /* In order to be able to parse symtab_and_line_to_sal_object function
 154    a real symtab_and_line structure is needed.  */
 155 #include "symtab.h"
 156
 157 /* Also needed to parse enum var_types. */
 158 #include "command.h"
 159 #include "breakpoint.h"
 160
 161 #include "exceptions.h"
 162
 163 enum gdbpy_iter_kind { iter_keys, iter_values, iter_items };
 164
 165 struct block;
 166 struct value;
 167 struct language_defn;
 168 struct program_space;
 169 struct bpstats;
 170 struct inferior;
 171
 172 extern PyObject *gdb_module;
 173 extern PyObject *gdb_python_module;
 174 extern PyTypeObject value_object_type
 175     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("value_object");
 176 extern PyTypeObject block_object_type
 177     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("block_object");
 178 extern PyTypeObject symbol_object_type
 179     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("symbol_object");
 180 extern PyTypeObject event_object_type
 181     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
 182 extern PyTypeObject events_object_type;
 183 extern PyTypeObject stop_event_object_type
 184     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("event_object");
 185 extern PyTypeObject breakpoint_object_type
 186     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("breakpoint_object");
 187 extern PyTypeObject frame_object_type
 188     CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("frame_object");
 189
 190 typedef struct breakpoint_object
 191 {
 192   PyObject_HEAD
 193
 194   /* The breakpoint number according to gdb.  */
 195   int number;
 196
 197   /* The gdb breakpoint object, or NULL if the breakpoint has been
 198      deleted.  */
 199   struct breakpoint *bp;
 200
 201   /* 1 is this is a FinishBreakpoint object, 0 otherwise.  */
 202   int is_finish_bp;
 203 } breakpoint_object;
 204
 205 /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
 206    exception if it is invalid.  */
 207 #define BPPY_REQUIRE_VALID(Breakpoint)                                  \
 208     do {                                                                \
 209       if ((Breakpoint)->bp == NULL)                                     \
 210         return PyErr_Format (PyExc_RuntimeError,                        \
 211                              _("Breakpoint %d is invalid."),            \
 212                              (Breakpoint)->number);                     \
 213     } while (0)
 214
 215 /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
 216    exception if it is invalid.  This macro is for use in setter functions.  */
 217 #define BPPY_SET_REQUIRE_VALID(Breakpoint)                              \
 218     do {                                                                \
 219       if ((Breakpoint)->bp == NULL)                                     \
 220         {                                                               \
 221           PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \
 222                         (Breakpoint)->number);                          \
 223           return -1;                                                    \
 224         }                                                               \
 225     } while (0)
 226
 227
 228 /* Variables used to pass information between the Breakpoint
 229    constructor and the breakpoint-created hook function.  */
 230 extern breakpoint_object *bppy_pending_object;
 231
 232
 233 typedef struct
 234 {
 235   PyObject_HEAD
 236
 237   /* The thread we represent.  */
 238   struct thread_info *thread;
 239
 240   /* The Inferior object to which this thread belongs.  */
 241   PyObject *inf_obj;
 242 } thread_object;
 243
 244 extern struct cmd_list_element *set_python_list;
 245 extern struct cmd_list_element *show_python_list;
 246
 247 PyObject *gdbpy_history (PyObject *self, PyObject *args);
 248 PyObject *gdbpy_breakpoints (PyObject *, PyObject *);
 249 PyObject *gdbpy_frame_stop_reason_string (PyObject *, PyObject *);
 250 PyObject *gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw);
 251 PyObject *gdbpy_lookup_global_symbol (PyObject *self, PyObject *args,
 252                                       PyObject *kw);
 253 PyObject *gdbpy_newest_frame (PyObject *self, PyObject *args);
 254 PyObject *gdbpy_selected_frame (PyObject *self, PyObject *args);
 255 PyObject *gdbpy_block_for_pc (PyObject *self, PyObject *args);
 256 PyObject *gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw);
 257 PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
 258                                            const char *encoding,
 259                                            struct type *type);
 260 PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
 261 PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
 262 PyObject *gdbpy_selected_inferior (PyObject *self, PyObject *args);
 263 PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
 264 PyObject *gdbpy_parameter (PyObject *self, PyObject *args);
 265 PyObject *gdbpy_parameter_value (enum var_types type, void *var);
 266 char *gdbpy_parse_command_name (const char *name,
 267                                 struct cmd_list_element ***base_list,
 268                                 struct cmd_list_element **start_list);
 269
 270 PyObject *symtab_and_line_to_sal_object (struct symtab_and_line sal);
 271 PyObject *symtab_to_symtab_object (struct symtab *symtab);
 272 PyObject *symbol_to_symbol_object (struct symbol *sym);
 273 PyObject *block_to_block_object (const struct block *block,
 274                                  struct objfile *objfile);
 275 PyObject *value_to_value_object (struct value *v);
 276 PyObject *type_to_type_object (struct type *);
 277 PyObject *frame_info_to_frame_object (struct frame_info *frame);
 278
 279 PyObject *pspace_to_pspace_object (struct program_space *)
 280     CPYCHECKER_RETURNS_BORROWED_REF;
 281 PyObject *pspy_get_printers (PyObject *, void *);
 282 PyObject *pspy_get_frame_filters (PyObject *, void *);
 283
 284 PyObject *objfile_to_objfile_object (struct objfile *)
 285     CPYCHECKER_RETURNS_BORROWED_REF;
 286 PyObject *objfpy_get_printers (PyObject *, void *);
 287 PyObject *objfpy_get_frame_filters (PyObject *, void *);
 288
 289 PyObject *gdbarch_to_arch_object (struct gdbarch *gdbarch);
 290
 291 thread_object *create_thread_object (struct thread_info *tp);
 292 thread_object *find_thread_object (ptid_t ptid)
 293     CPYCHECKER_RETURNS_BORROWED_REF;
 294 PyObject *find_inferior_object (int pid);
 295 PyObject *inferior_to_inferior_object (struct inferior *inferior);
 296
 297 const struct block *block_object_to_block (PyObject *obj);
 298 struct symbol *symbol_object_to_symbol (PyObject *obj);
 299 struct value *value_object_to_value (PyObject *self);
 300 struct value *convert_value_from_python (PyObject *obj);
 301 struct type *type_object_to_type (PyObject *obj);
 302 struct symtab *symtab_object_to_symtab (PyObject *obj);
 303 struct symtab_and_line *sal_object_to_symtab_and_line (PyObject *obj);
 304 struct frame_info *frame_object_to_frame_info (PyObject *frame_obj);
 305 struct gdbarch *arch_object_to_gdbarch (PyObject *obj);
 306
 307 void gdbpy_initialize_gdb_readline (void);
 308 void gdbpy_initialize_auto_load (void);
 309 void gdbpy_initialize_values (void);
 310 void gdbpy_initialize_frames (void);
 311 void gdbpy_initialize_symtabs (void);
 312 void gdbpy_initialize_commands (void);
 313 void gdbpy_initialize_symbols (void);
 314 void gdbpy_initialize_symtabs (void);
 315 void gdbpy_initialize_blocks (void);
 316 void gdbpy_initialize_types (void);
 317 void gdbpy_initialize_functions (void);
 318 void gdbpy_initialize_pspace (void);
 319 void gdbpy_initialize_objfile (void);
 320 void gdbpy_initialize_breakpoints (void);
 321 void gdbpy_initialize_finishbreakpoints (void);
 322 void gdbpy_initialize_lazy_string (void);
 323 void gdbpy_initialize_parameters (void);
 324 void gdbpy_initialize_thread (void);
 325 void gdbpy_initialize_inferior (void);
 326 void gdbpy_initialize_eventregistry (void);
 327 void gdbpy_initialize_event (void);
 328 void gdbpy_initialize_py_events (void);
 329 void gdbpy_initialize_stop_event (void);
 330 void gdbpy_initialize_signal_event (void);
 331 void gdbpy_initialize_breakpoint_event (void);
 332 void gdbpy_initialize_continue_event (void);
 333 void gdbpy_initialize_exited_event (void);
 334 void gdbpy_initialize_thread_event (void);
 335 void gdbpy_initialize_new_objfile_event (void);
 336 void gdbpy_initialize_arch (void);
 337
 338 struct cleanup *make_cleanup_py_decref (PyObject *py);
 339 struct cleanup *make_cleanup_py_xdecref (PyObject *py);
 340
 341 struct cleanup *ensure_python_env (struct gdbarch *gdbarch,
 342                                    const struct language_defn *language);
 343
 344 extern struct gdbarch *python_gdbarch;
 345 extern const struct language_defn *python_language;
 346
 347 /* Use this after a TRY_EXCEPT to throw the appropriate Python
 348    exception.  */
 349 #define GDB_PY_HANDLE_EXCEPTION(Exception)                              \
 350     do {                                                                \
 351       if (Exception.reason < 0)                                         \
 352         return gdbpy_convert_exception (Exception);                     \
 353     } while (0)
 354
 355 /* Use this after a TRY_EXCEPT to throw the appropriate Python
 356    exception.  This macro is for use inside setter functions.  */
 357 #define GDB_PY_SET_HANDLE_EXCEPTION(Exception)                          \
 358     do {                                                                \
 359       if (Exception.reason < 0)                                         \
 360         {                                                               \
 361           gdbpy_convert_exception (Exception);                          \
 362           return -1;                                                    \
 363         }                                                               \
 364     } while (0)
 365
 366 void gdbpy_print_stack (void);
 367
 368 void source_python_script_for_objfile (struct objfile *objfile, FILE *file,
 369                                        const char *filename);
 370
 371 PyObject *python_string_to_unicode (PyObject *obj);
 372 char *unicode_to_target_string (PyObject *unicode_str);
 373 char *python_string_to_target_string (PyObject *obj);
 374 PyObject *python_string_to_target_python_string (PyObject *obj);
 375 char *python_string_to_host_string (PyObject *obj);
 376 int gdbpy_is_string (PyObject *obj);
 377 char *gdbpy_obj_to_string (PyObject *obj);
 378 char *gdbpy_exception_to_string (PyObject *ptype, PyObject *pvalue);
 379
 380 int gdbpy_is_lazy_string (PyObject *result);
 381 void gdbpy_extract_lazy_string (PyObject *string, CORE_ADDR *addr,
 382                                 struct type **str_type,
 383                                 long *length, char **encoding);
 384
 385 int gdbpy_is_value_object (PyObject *obj);
 386
 387 /* Note that these are declared here, and not in python.h with the
 388    other pretty-printer functions, because they refer to PyObject.  */
 389 PyObject *apply_varobj_pretty_printer (PyObject *print_obj,
 390                                        struct value **replacement,
 391                                        struct ui_file *stream);
 392 PyObject *gdbpy_get_varobj_pretty_printer (struct value *value);
 393 char *gdbpy_get_display_hint (PyObject *printer);
 394 PyObject *gdbpy_default_visualizer (PyObject *self, PyObject *args);
 395
 396 void bpfinishpy_pre_stop_hook (struct breakpoint_object *bp_obj);
 397 void bpfinishpy_post_stop_hook (struct breakpoint_object *bp_obj);
 398
 399 extern PyObject *gdbpy_doc_cst;
 400 extern PyObject *gdbpy_children_cst;
 401 extern PyObject *gdbpy_to_string_cst;
 402 extern PyObject *gdbpy_display_hint_cst;
 403 extern PyObject *gdbpy_enabled_cst;
 404 extern PyObject *gdbpy_value_cst;
 405
 406 /* Exception types.  */
 407 extern PyObject *gdbpy_gdb_error;
 408 extern PyObject *gdbpy_gdb_memory_error;
 409 extern PyObject *gdbpy_gdberror_exc;
 410
 411 extern PyObject *gdbpy_convert_exception (struct gdb_exception);
 412
 413 int get_addr_from_python (PyObject *obj, CORE_ADDR *addr);
 414
 415 PyObject *gdb_py_object_from_longest (LONGEST l);
 416 PyObject *gdb_py_object_from_ulongest (ULONGEST l);
 417 int gdb_py_int_as_long (PyObject *, long *);
 418
 419 PyObject *gdb_py_generic_dict (PyObject *self, void *closure);
 420
 421 #endif /* GDB_PYTHON_INTERNAL_H */