gdb/python/python-internal.h

   1 /* Gdb/Python header for private use by Python module.
   2
   3    Copyright (C) 2008-2012 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 #include <stdio.h>
  24
  25 /* Python 2.4 doesn't include stdint.h soon enough to get {u,}intptr_t
  26    needed by pyport.h.  */
  27 #include <stdint.h>
  28
  29 /* /usr/include/features.h on linux systems will define _POSIX_C_SOURCE
  30    if it sees _GNU_SOURCE (which config.h will define).
  31    pyconfig.h defines _POSIX_C_SOURCE to a different value than
  32    /usr/include/features.h does causing compilation to fail.
  33    To work around this, undef _POSIX_C_SOURCE before we include Python.h.
  34
  35    Same problem with _XOPEN_SOURCE.  */
  36 #undef _POSIX_C_SOURCE
  37 #undef _XOPEN_SOURCE
  38
  39 /* On sparc-solaris, /usr/include/sys/feature_tests.h defines
  40    _FILE_OFFSET_BITS, which pyconfig.h also defines.  Same work
  41    around technique as above.  */
  42 #undef _FILE_OFFSET_BITS
  43
  44 /* Request clean size types from Python.  */
  45 #define PY_SSIZE_T_CLEAN
  46
  47 /* Include the Python header files using angle brackets rather than
  48    double quotes.  On case-insensitive filesystems, this prevents us
  49    from including our python/python.h header file.  */
  50 #include <Python.h>
  51 #include <frameobject.h>
  52 #if HAVE_LIBPYTHON2_4
  53 /* Py_ssize_t is not defined until 2.5.
  54    Logical type for Py_ssize_t is Py_intptr_t, but that fails in 64-bit
  55    compilation due to several apparent mistakes in python2.4 API, so we
  56    use 'int' instead.  */
  57 typedef int Py_ssize_t;
  58 #endif
  59
  60 /* If Python.h does not define WITH_THREAD, then the various
  61    GIL-related functions will not be defined.  However,
  62    PyGILState_STATE will be.  */
  63 #ifndef WITH_THREAD
  64 #define PyGILState_Ensure() ((PyGILState_STATE) 0)
  65 #define PyGILState_Release(ARG) ((void)(ARG))
  66 #define PyEval_InitThreads()
  67 #define PyThreadState_Swap(ARG) ((void)(ARG))
  68 #define PyEval_ReleaseLock()
  69 #endif
  70
  71 /* Python supplies HAVE_LONG_LONG and some `long long' support when it
  72    is available.  These defines let us handle the differences more
  73    cleanly.  */
  74 #ifdef HAVE_LONG_LONG
  75
  76 #define GDB_PY_LL_ARG "L"
  77 #define GDB_PY_LLU_ARG "K"
  78 typedef PY_LONG_LONG gdb_py_longest;
  79 typedef unsigned PY_LONG_LONG gdb_py_ulongest;
  80 #define gdb_py_long_from_longest PyLong_FromLongLong
  81 #define gdb_py_long_from_ulongest PyLong_FromUnsignedLongLong
  82 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLongLong
  83
  84 #else /* HAVE_LONG_LONG */
  85
  86 #define GDB_PY_LL_ARG "L"
  87 #define GDB_PY_LLU_ARG "K"
  88 typedef long gdb_py_longest;
  89 typedef unsigned long gdb_py_ulongest;
  90 #define gdb_py_long_from_longest PyLong_FromLong
  91 #define gdb_py_long_from_ulongest PyLong_FromUnsignedLong
  92 #define gdb_py_long_as_ulongest PyLong_AsUnsignedLong
  93
  94 #endif /* HAVE_LONG_LONG */
  95
  96
  97 /* In order to be able to parse symtab_and_line_to_sal_object function
  98    a real symtab_and_line structure is needed.  */
  99 #include "symtab.h"
 100
 101 /* Also needed to parse enum var_types. */
 102 #include "command.h"
 103 #include "breakpoint.h"
 104
 105 #include "exceptions.h"
 106
 107 enum gdbpy_iter_kind { iter_keys, iter_values, iter_items };
 108
 109 struct block;
 110 struct value;
 111 struct language_defn;
 112 struct program_space;
 113 struct bpstats;
 114 struct inferior;
 115
 116 extern PyObject *gdb_module;
 117 extern PyTypeObject value_object_type;
 118 extern PyTypeObject block_object_type;
 119 extern PyTypeObject symbol_object_type;
 120 extern PyTypeObject event_object_type;
 121 extern PyTypeObject events_object_type;
 122 extern PyTypeObject stop_event_object_type;
 123 extern PyTypeObject breakpoint_object_type;
 124 extern PyTypeObject frame_object_type;
 125
 126 typedef struct breakpoint_object
 127 {
 128   PyObject_HEAD
 129
 130   /* The breakpoint number according to gdb.  */
 131   int number;
 132
 133   /* The gdb breakpoint object, or NULL if the breakpoint has been
 134      deleted.  */
 135   struct breakpoint *bp;
 136
 137   /* 1 is this is a FinishBreakpoint object, 0 otherwise.  */
 138   int is_finish_bp;
 139 } breakpoint_object;
 140
 141 /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
 142    exception if it is invalid.  */
 143 #define BPPY_REQUIRE_VALID(Breakpoint)                                  \
 144     do {                                                                \
 145       if ((Breakpoint)->bp == NULL)                                     \
 146         return PyErr_Format (PyExc_RuntimeError,                        \
 147                              _("Breakpoint %d is invalid."),            \
 148                              (Breakpoint)->number);                     \
 149     } while (0)
 150
 151 /* Require that BREAKPOINT be a valid breakpoint ID; throw a Python
 152    exception if it is invalid.  This macro is for use in setter functions.  */
 153 #define BPPY_SET_REQUIRE_VALID(Breakpoint)                              \
 154     do {                                                                \
 155       if ((Breakpoint)->bp == NULL)                                     \
 156         {                                                               \
 157           PyErr_Format (PyExc_RuntimeError, _("Breakpoint %d is invalid."), \
 158                         (Breakpoint)->number);                          \
 159           return -1;                                                    \
 160         }                                                               \
 161     } while (0)
 162
 163
 164 /* Variables used to pass information between the Breakpoint
 165    constructor and the breakpoint-created hook function.  */
 166 extern breakpoint_object *bppy_pending_object;
 167
 168
 169 typedef struct
 170 {
 171   PyObject_HEAD
 172
 173   /* The thread we represent.  */
 174   struct thread_info *thread;
 175
 176   /* The Inferior object to which this thread belongs.  */
 177   PyObject *inf_obj;
 178 } thread_object;
 179
 180 extern struct cmd_list_element *set_python_list;
 181 extern struct cmd_list_element *show_python_list;
 182
 183 PyObject *gdbpy_history (PyObject *self, PyObject *args);
 184 PyObject *gdbpy_breakpoints (PyObject *, PyObject *);
 185 PyObject *gdbpy_frame_stop_reason_string (PyObject *, PyObject *);
 186 PyObject *gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw);
 187 PyObject *gdbpy_lookup_global_symbol (PyObject *self, PyObject *args,
 188                                       PyObject *kw);
 189 PyObject *gdbpy_newest_frame (PyObject *self, PyObject *args);
 190 PyObject *gdbpy_selected_frame (PyObject *self, PyObject *args);
 191 PyObject *gdbpy_block_for_pc (PyObject *self, PyObject *args);
 192 PyObject *gdbpy_lookup_type (PyObject *self, PyObject *args, PyObject *kw);
 193 PyObject *gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
 194                                            const char *encoding,
 195                                            struct type *type);
 196 PyObject *gdbpy_inferiors (PyObject *unused, PyObject *unused2);
 197 PyObject *gdbpy_selected_thread (PyObject *self, PyObject *args);
 198 PyObject *gdbpy_selected_inferior (PyObject *self, PyObject *args);
 199 PyObject *gdbpy_string_to_argv (PyObject *self, PyObject *args);
 200 PyObject *gdbpy_parameter (PyObject *self, PyObject *args);
 201 PyObject *gdbpy_parameter_value (enum var_types type, void *var);
 202 char *gdbpy_parse_command_name (const char *name,
 203                                 struct cmd_list_element ***base_list,
 204                                 struct cmd_list_element **start_list);
 205
 206 PyObject *symtab_and_line_to_sal_object (struct symtab_and_line sal);
 207 PyObject *symtab_to_symtab_object (struct symtab *symtab);
 208 PyObject *symbol_to_symbol_object (struct symbol *sym);
 209 PyObject *block_to_block_object (const struct block *block,
 210                                  struct objfile *objfile);
 211 PyObject *value_to_value_object (struct value *v);
 212 PyObject *type_to_type_object (struct type *);
 213 PyObject *frame_info_to_frame_object (struct frame_info *frame);
 214
 215 PyObject *pspace_to_pspace_object (struct program_space *);
 216 PyObject *pspy_get_printers (PyObject *, void *);
 217
 218 PyObject *objfile_to_objfile_object (struct objfile *);
 219 PyObject *objfpy_get_printers (PyObject *, void *);
 220
 221 thread_object *create_thread_object (struct thread_info *tp);
 222 thread_object *find_thread_object (ptid_t ptid);
 223 PyObject *find_inferior_object (int pid);
 224 PyObject *inferior_to_inferior_object (struct inferior *inferior);
 225
 226 const struct block *block_object_to_block (PyObject *obj);
 227 struct symbol *symbol_object_to_symbol (PyObject *obj);
 228 struct value *value_object_to_value (PyObject *self);
 229 struct value *convert_value_from_python (PyObject *obj);
 230 struct type *type_object_to_type (PyObject *obj);
 231 struct symtab *symtab_object_to_symtab (PyObject *obj);
 232 struct symtab_and_line *sal_object_to_symtab_and_line (PyObject *obj);
 233 struct frame_info *frame_object_to_frame_info (PyObject *frame_obj);
 234
 235 void gdbpy_initialize_auto_load (void);
 236 void gdbpy_initialize_values (void);
 237 void gdbpy_initialize_frames (void);
 238 void gdbpy_initialize_symtabs (void);
 239 void gdbpy_initialize_commands (void);
 240 void gdbpy_initialize_symbols (void);
 241 void gdbpy_initialize_symtabs (void);
 242 void gdbpy_initialize_blocks (void);
 243 void gdbpy_initialize_types (void);
 244 void gdbpy_initialize_functions (void);
 245 void gdbpy_initialize_pspace (void);
 246 void gdbpy_initialize_objfile (void);
 247 void gdbpy_initialize_breakpoints (void);
 248 void gdbpy_initialize_finishbreakpoints (void);
 249 void gdbpy_initialize_lazy_string (void);
 250 void gdbpy_initialize_parameters (void);
 251 void gdbpy_initialize_thread (void);
 252 void gdbpy_initialize_inferior (void);
 253 void gdbpy_initialize_eventregistry (void);
 254 void gdbpy_initialize_event (void);
 255 void gdbpy_initialize_py_events (void);
 256 void gdbpy_initialize_stop_event (void);
 257 void gdbpy_initialize_signal_event (void);
 258 void gdbpy_initialize_breakpoint_event (void);
 259 void gdbpy_initialize_continue_event (void);
 260 void gdbpy_initialize_exited_event (void);
 261 void gdbpy_initialize_thread_event (void);
 262 void gdbpy_initialize_new_objfile_event (void);
 263
 264 struct cleanup *make_cleanup_py_decref (PyObject *py);
 265
 266 struct cleanup *ensure_python_env (struct gdbarch *gdbarch,
 267                                    const struct language_defn *language);
 268
 269 extern struct gdbarch *python_gdbarch;
 270 extern const struct language_defn *python_language;
 271
 272 /* Use this after a TRY_EXCEPT to throw the appropriate Python
 273    exception.  */
 274 #define GDB_PY_HANDLE_EXCEPTION(Exception)                              \
 275     do {                                                                \
 276       if (Exception.reason < 0)                                         \
 277         return gdbpy_convert_exception (Exception);                     \
 278     } while (0)
 279
 280 /* Use this after a TRY_EXCEPT to throw the appropriate Python
 281    exception.  This macro is for use inside setter functions.  */
 282 #define GDB_PY_SET_HANDLE_EXCEPTION(Exception)                          \
 283     do {                                                                \
 284       if (Exception.reason < 0)                                         \
 285         {                                                               \
 286           gdbpy_convert_exception (Exception);                          \
 287           return -1;                                                    \
 288         }                                                               \
 289     } while (0)
 290
 291 void gdbpy_print_stack (void);
 292
 293 void source_python_script_for_objfile (struct objfile *objfile, FILE *file,
 294                                        const char *filename);
 295
 296 PyObject *python_string_to_unicode (PyObject *obj);
 297 char *unicode_to_target_string (PyObject *unicode_str);
 298 char *python_string_to_target_string (PyObject *obj);
 299 PyObject *python_string_to_target_python_string (PyObject *obj);
 300 char *python_string_to_host_string (PyObject *obj);
 301 PyObject *target_string_to_unicode (const gdb_byte *str, int length);
 302 int gdbpy_is_string (PyObject *obj);
 303 char *gdbpy_obj_to_string (PyObject *obj);
 304 char *gdbpy_exception_to_string (PyObject *ptype, PyObject *pvalue);
 305
 306 int gdbpy_is_lazy_string (PyObject *result);
 307 void gdbpy_extract_lazy_string (PyObject *string, CORE_ADDR *addr,
 308                                 struct type **str_type,
 309                                 long *length, char **encoding);
 310
 311 int gdbpy_is_value_object (PyObject *obj);
 312
 313 /* Note that these are declared here, and not in python.h with the
 314    other pretty-printer functions, because they refer to PyObject.  */
 315 PyObject *apply_varobj_pretty_printer (PyObject *print_obj,
 316                                        struct value **replacement,
 317                                        struct ui_file *stream);
 318 PyObject *gdbpy_get_varobj_pretty_printer (struct value *value);
 319 char *gdbpy_get_display_hint (PyObject *printer);
 320 PyObject *gdbpy_default_visualizer (PyObject *self, PyObject *args);
 321
 322 void bpfinishpy_pre_stop_hook (struct breakpoint_object *bp_obj);
 323 void bpfinishpy_post_stop_hook (struct breakpoint_object *bp_obj);
 324
 325 extern PyObject *gdbpy_doc_cst;
 326 extern PyObject *gdbpy_children_cst;
 327 extern PyObject *gdbpy_to_string_cst;
 328 extern PyObject *gdbpy_display_hint_cst;
 329 extern PyObject *gdbpy_enabled_cst;
 330 extern PyObject *gdbpy_value_cst;
 331
 332 /* Exception types.  */
 333 extern PyObject *gdbpy_gdb_error;
 334 extern PyObject *gdbpy_gdb_memory_error;
 335 extern PyObject *gdbpy_gdberror_exc;
 336
 337 extern PyObject *gdbpy_convert_exception (struct gdb_exception);
 338
 339 int get_addr_from_python (PyObject *obj, CORE_ADDR *addr);
 340
 341 PyObject *gdb_py_object_from_longest (LONGEST l);
 342 PyObject *gdb_py_object_from_ulongest (ULONGEST l);
 343 int gdb_py_int_as_long (PyObject *, long *);
 344
 345 #endif /* GDB_PYTHON_INTERNAL_H */