gdb/ada-lang.h

   1 /* Ada language support definitions for GDB, the GNU debugger.
   2
   3    Copyright (C) 1992-2023 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 #if !defined (ADA_LANG_H)
  21 #define ADA_LANG_H 1
  22
  23 class frame_info_ptr;
  24 struct inferior;
  25 struct type_print_options;
  26 struct parser_state;
  27
  28 #include "value.h"
  29 #include "gdbtypes.h"
  30 #include "breakpoint.h"
  31
  32 /* Names of specific files known to be part of the runtime
  33    system and that might consider (confusing) debugging information.
  34    Each name (a basic regular expression string) is followed by a
  35    comma.  FIXME: Should be part of a configuration file.  */
  36 #if defined (__linux__)
  37 #define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
  38    "^[agis]-.*\\.ad[bs]$", \
  39    "/lib.*/libpthread\\.so[.0-9]*$", "/lib.*/libpthread\\.a$", \
  40    "/lib.*/libc\\.so[.0-9]*$", "/lib.*/libc\\.a$",
  41 #endif
  42
  43 #if !defined (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS)
  44 #define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
  45    "^unwind-seh.c$", \
  46    "^[agis]-.*\\.ad[bs]$",
  47 #endif
  48
  49 /* Names of compiler-generated auxiliary functions probably of no
  50    interest to users.  Each name (a basic regular expression string)
  51    is followed by a comma.  */
  52 #define ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS \
  53    "___clean[.$a-zA-Z0-9_]*$", \
  54    "___finalizer[.$a-zA-Z0-9_]*$",
  55
  56 /* The maximum number of frame levels searched for non-local,
  57    non-global symbols.  This limit exists as a precaution to prevent
  58    infinite search loops when the stack is screwed up.  */
  59 #define MAX_ENCLOSING_FRAME_LEVELS 7
  60
  61 /* Maximum number of steps followed in looking for the ultimate
  62    referent of a renaming.  This prevents certain infinite loops that
  63    can otherwise result.  */
  64 #define MAX_RENAMING_CHAIN_LENGTH 10
  65
  66 struct block;
  67
  68 /* Corresponding encoded/decoded names and opcodes for Ada user-definable
  69    operators.  */
  70 struct ada_opname_map
  71 {
  72   const char *encoded;
  73   const char *decoded;
  74   enum exp_opcode op;
  75 };
  76
  77 /* Table of Ada operators in encoded and decoded forms.  */
  78 /* Defined in ada-lang.c */
  79 extern const struct ada_opname_map ada_opname_table[];
  80
  81 /* Denotes a type of renaming symbol (see ada_parse_renaming).  */
  82 enum ada_renaming_category
  83   {
  84     /* Indicates a symbol that does not encode a renaming.  */
  85     ADA_NOT_RENAMING,
  86
  87     /* For symbols declared
  88          Foo : TYPE renamed OBJECT;  */
  89     ADA_OBJECT_RENAMING,
  90
  91     /* For symbols declared
  92          Foo : exception renames EXCEPTION;  */
  93     ADA_EXCEPTION_RENAMING,
  94     /* For packages declared
  95           package Foo renames PACKAGE; */
  96     ADA_PACKAGE_RENAMING,
  97     /* For subprograms declared
  98           SUBPROGRAM_SPEC renames SUBPROGRAM;
  99        (Currently not used).  */
 100     ADA_SUBPROGRAM_RENAMING
 101   };
 102
 103 /* The different types of catchpoints that we introduced for catching
 104    Ada exceptions.  */
 105
 106 enum ada_exception_catchpoint_kind
 107 {
 108   ada_catch_exception,
 109   ada_catch_exception_unhandled,
 110   ada_catch_assert,
 111   ada_catch_handlers
 112 };
 113
 114 /* Ada task structures.  */
 115
 116 struct ada_task_info
 117 {
 118   /* The PTID of the thread that this task runs on.  This ptid is computed
 119      in a target-dependent way from the associated Task Control Block.  */
 120   ptid_t ptid;
 121
 122   /* The ID of the task.  */
 123   CORE_ADDR task_id;
 124
 125   /* The name of the task.  */
 126   char name[257];
 127
 128   /* The current state of the task.  */
 129   int state;
 130
 131   /* The priority associated to the task.  */
 132   int priority;
 133
 134   /* If non-zero, the task ID of the parent task.  */
 135   CORE_ADDR parent;
 136
 137   /* If the task is waiting on a task entry, this field contains
 138      the ID of the other task.  Zero otherwise.  */
 139   CORE_ADDR called_task;
 140
 141   /* If the task is accepting a rendezvous with another task, this field
 142      contains the ID of the calling task.  Zero otherwise.  */
 143   CORE_ADDR caller_task;
 144
 145   /* The CPU on which the task is running.  This is dependent on
 146      the runtime actually providing that info, which is not always
 147      the case.  Normally, we should be able to count on it on
 148      bare-metal targets.  */
 149   int base_cpu;
 150 };
 151
 152 extern int ada_get_field_index (const struct type *type,
 153                                 const char *field_name,
 154                                 int maybe_missing);
 155
 156 extern int ada_parse (struct parser_state *);    /* Defined in ada-exp.y */
 157
 158                         /* Defined in ada-typeprint.c */
 159 extern void ada_print_type (struct type *, const char *, struct ui_file *, int,
 160                             int, const struct type_print_options *);
 161
 162 extern void ada_print_typedef (struct type *type, struct symbol *new_symbol,
 163                                struct ui_file *stream);
 164
 165 /* Implement la_value_print_inner for Ada.  */
 166
 167 extern void ada_value_print_inner (struct value *, struct ui_file *, int,
 168                                    const struct value_print_options *);
 169
 170 extern void ada_value_print (struct value *, struct ui_file *,
 171                              const struct value_print_options *);
 172
 173                                 /* Defined in ada-lang.c */
 174
 175 extern void ada_emit_char (int, struct type *, struct ui_file *, int, int);
 176
 177 extern void ada_printchar (int, struct type *, struct ui_file *);
 178
 179 extern void ada_printstr (struct ui_file *, struct type *, const gdb_byte *,
 180                           unsigned int, const char *, int,
 181                           const struct value_print_options *);
 182
 183 struct value *ada_convert_actual (struct value *actual,
 184                                   struct type *formal_type0);
 185
 186 extern bool ada_is_access_to_unconstrained_array (struct type *type);
 187
 188 extern struct value *ada_value_subscript (struct value *, int,
 189                                           struct value **);
 190
 191 extern void ada_fixup_array_indexes_type (struct type *index_desc_type);
 192
 193 extern struct type *ada_array_element_type (struct type *, int);
 194
 195 extern int ada_array_arity (struct type *);
 196
 197 extern struct value *ada_coerce_to_simple_array_ptr (struct value *);
 198
 199 struct value *ada_coerce_to_simple_array (struct value *);
 200
 201 extern int ada_is_simple_array_type (struct type *);
 202
 203 extern int ada_is_array_descriptor_type (struct type *);
 204
 205 extern int ada_is_bogus_array_descriptor (struct type *);
 206
 207 extern LONGEST ada_discrete_type_low_bound (struct type *);
 208
 209 extern LONGEST ada_discrete_type_high_bound (struct type *);
 210
 211 extern struct value *ada_get_decoded_value (struct value *value);
 212
 213 extern struct type *ada_get_decoded_type (struct type *type);
 214
 215 extern const char *ada_decode_symbol (const struct general_symbol_info *);
 216
 217 /* Decode the GNAT-encoded name NAME, returning the decoded name.  If
 218    the name does not appear to be GNAT-encoded, then the result
 219    depends on WRAP.  If WRAP is true (the default), then the result is
 220    simply wrapped in <...>.  If WRAP is false, then the empty string
 221    will be returned.  Also, when OPERATORS is false, operator names
 222    will not be decoded.  */
 223 extern std::string ada_decode (const char *name, bool wrap = true,
 224                                bool operators = true);
 225
 226 extern std::vector<struct block_symbol> ada_lookup_symbol_list
 227      (const char *, const struct block *, domain_enum);
 228
 229 extern struct block_symbol ada_lookup_symbol (const char *,
 230                                               const struct block *,
 231                                               domain_enum);
 232
 233 extern void ada_lookup_encoded_symbol
 234   (const char *name, const struct block *block, domain_enum domain,
 235    struct block_symbol *symbol_info);
 236
 237 extern struct bound_minimal_symbol ada_lookup_simple_minsym (const char *,
 238                                                              objfile *);
 239
 240 extern int ada_scan_number (const char *, int, LONGEST *, int *);
 241
 242 extern struct value *ada_value_primitive_field (struct value *arg1,
 243                                                 int offset,
 244                                                 int fieldno,
 245                                                 struct type *arg_type);
 246
 247 extern struct type *ada_parent_type (struct type *);
 248
 249 extern int ada_is_ignored_field (struct type *, int);
 250
 251 extern int ada_is_constrained_packed_array_type (struct type *);
 252
 253 extern struct value *ada_value_primitive_packed_val (struct value *,
 254                                                      const gdb_byte *,
 255                                                      long, int, int,
 256                                                      struct type *);
 257
 258 extern struct type *ada_coerce_to_simple_array_type (struct type *);
 259
 260 extern bool ada_is_character_type (struct type *);
 261
 262 extern bool ada_is_string_type (struct type *);
 263
 264 extern int ada_is_tagged_type (struct type *, int);
 265
 266 extern int ada_is_tag_type (struct type *);
 267
 268 extern gdb::unique_xmalloc_ptr<char> ada_tag_name (struct value *);
 269
 270 extern struct value *ada_tag_value_at_base_address (struct value *obj);
 271
 272 extern int ada_is_parent_field (struct type *, int);
 273
 274 extern int ada_is_wrapper_field (struct type *, int);
 275
 276 extern int ada_is_variant_part (struct type *, int);
 277
 278 extern struct type *ada_variant_discrim_type (struct type *, struct type *);
 279
 280 extern const char *ada_variant_discrim_name (struct type *);
 281
 282 extern int ada_is_aligner_type (struct type *);
 283
 284 extern struct type *ada_aligned_type (struct type *);
 285
 286 extern const gdb_byte *ada_aligned_value_addr (struct type *,
 287                                                const gdb_byte *);
 288
 289 extern int ada_is_system_address_type (struct type *);
 290
 291 extern int ada_which_variant_applies (struct type *, struct value *);
 292
 293 extern struct type *ada_to_fixed_type (struct type *, const gdb_byte *,
 294                                        CORE_ADDR, struct value *,
 295                                        int check_tag);
 296
 297 extern struct value *ada_to_fixed_value (struct value *val);
 298
 299 extern struct type *ada_template_to_fixed_record_type_1 (struct type *type,
 300                                                          const gdb_byte *valaddr,
 301                                                          CORE_ADDR address,
 302                                                          struct value *dval0,
 303                                                          int keep_dynamic_fields);
 304
 305 extern int ada_name_prefix_len (const char *);
 306
 307 extern const char *ada_type_name (struct type *);
 308
 309 extern struct type *ada_find_parallel_type (struct type *,
 310                                             const char *suffix);
 311
 312 extern bool get_int_var_value (const char *, LONGEST &value);
 313
 314 extern int ada_prefer_type (struct type *, struct type *);
 315
 316 extern struct type *ada_get_base_type (struct type *);
 317
 318 extern struct type *ada_check_typedef (struct type *);
 319
 320 extern std::string ada_encode (const char *, bool fold = true);
 321
 322 extern const char *ada_enum_name (const char *);
 323
 324 extern int ada_is_modular_type (struct type *);
 325
 326 extern ULONGEST ada_modulus (struct type *);
 327
 328 extern struct value *ada_value_ind (struct value *);
 329
 330 extern void ada_print_scalar (struct type *, LONGEST, struct ui_file *);
 331
 332 extern int ada_is_range_type_name (const char *);
 333
 334 extern enum ada_renaming_category ada_parse_renaming (struct symbol *,
 335                                                       const char **,
 336                                                       int *, const char **);
 337
 338 extern void ada_find_printable_frame (frame_info_ptr fi);
 339
 340 extern const char *ada_main_name ();
 341
 342 extern void create_ada_exception_catchpoint
 343   (struct gdbarch *gdbarch, enum ada_exception_catchpoint_kind ex_kind,
 344    const std::string &excep_string, const std::string &cond_string, int tempflag,
 345    int enabled, int from_tty);
 346
 347 /* Return true if BP is an Ada catchpoint.  */
 348
 349 extern bool is_ada_exception_catchpoint (breakpoint *bp);
 350
 351 /* Some information about a given Ada exception.  */
 352
 353 struct ada_exc_info
 354 {
 355   /* The name of the exception.  */
 356   const char *name;
 357
 358   /* The address of the symbol corresponding to that exception.  */
 359   CORE_ADDR addr;
 360
 361   bool operator< (const ada_exc_info &) const;
 362   bool operator== (const ada_exc_info &) const;
 363 };
 364
 365 extern std::vector<ada_exc_info> ada_exceptions_list (const char *regexp);
 366
 367 /* Tasking-related: ada-tasks.c */
 368
 369 extern int valid_task_id (int);
 370
 371 extern struct ada_task_info *ada_get_task_info_from_ptid (ptid_t ptid);
 372
 373 extern int ada_get_task_number (thread_info *thread);
 374
 375 typedef gdb::function_view<void (struct ada_task_info *task)>
 376   ada_task_list_iterator_ftype;
 377 extern void iterate_over_live_ada_tasks
 378   (ada_task_list_iterator_ftype iterator);
 379
 380 extern const char *ada_get_tcb_types_info (void);
 381
 382 extern void print_ada_task_info (struct ui_out *uiout,
 383                                  const char *taskno_str,
 384                                  struct inferior *inf);
 385
 386 /* Look for a symbol for an overloaded operator for the operation OP.
 387    PARSE_COMPLETION is true if currently parsing for completion.
 388    NARGS and ARGVEC describe the arguments to the call.  Returns a
 389    "null" block_symbol if no such operator is found.  */
 390
 391 extern block_symbol ada_find_operator_symbol (enum exp_opcode op,
 392                                               bool parse_completion,
 393                                               int nargs, value *argvec[]);
 394
 395 /* Resolve a function call, selecting among possible function symbols.
 396    SYM and BLOCK are passed to ada_lookup_symbol_list.  CONTEXT_TYPE
 397    describes the calling context.  PARSE_COMPLETION is true if
 398    currently parsing for completion.  NARGS and ARGVEC describe the
 399    arguments to the call.  This returns the chosen symbol and will
 400    update TRACKER accordingly.  */
 401
 402 extern block_symbol ada_resolve_funcall (struct symbol *sym,
 403                                          const struct block *block,
 404                                          struct type *context_type,
 405                                          bool parse_completion,
 406                                          int nargs, value *argvec[],
 407                                          innermost_block_tracker *tracker);
 408
 409 /* Resolve a symbol reference, selecting among possible values.  SYM
 410    and BLOCK are passed to ada_lookup_symbol_list.  CONTEXT_TYPE
 411    describes the calling context.  PARSE_COMPLETION is true if
 412    currently parsing for completion.  If DEPROCEDURE_P is nonzero,
 413    then a symbol that names a zero-argument function will be passed
 414    through ada_resolve_function.  This returns the chosen symbol and
 415    will update TRACKER accordingly.  */
 416
 417 extern block_symbol ada_resolve_variable (struct symbol *sym,
 418                                           const struct block *block,
 419                                           struct type *context_type,
 420                                           bool parse_completion,
 421                                           int deprocedure_p,
 422                                           innermost_block_tracker *tracker);
 423
 424 /* The type of nth index in arrays of given type (n numbering from 1).
 425    Does not examine memory.  Throws an error if N is invalid or TYPE
 426    is not an array type.  NAME is the name of the Ada attribute being
 427    evaluated ('range, 'first, 'last, or 'length); it is used in building
 428    the error message.  */
 429 extern struct type *ada_index_type (struct type *type, int n,
 430                                     const char *name);
 431
 432 #endif