gdb/ada-lang.h

   1 /* Ada language support definitions for GDB, the GNU debugger.
   2
   3    Copyright (C) 1992-2021 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 struct frame_info;
  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.  */
 222 extern std::string ada_decode (const char *name, bool wrap = true);
 223
 224 extern std::vector<struct block_symbol> ada_lookup_symbol_list
 225      (const char *, const struct block *, domain_enum);
 226
 227 extern struct block_symbol ada_lookup_symbol (const char *,
 228                                               const struct block *,
 229                                               domain_enum);
 230
 231 extern void ada_lookup_encoded_symbol
 232   (const char *name, const struct block *block, domain_enum domain,
 233    struct block_symbol *symbol_info);
 234
 235 extern struct bound_minimal_symbol ada_lookup_simple_minsym (const char *);
 236
 237 extern int ada_scan_number (const char *, int, LONGEST *, int *);
 238
 239 extern struct value *ada_value_primitive_field (struct value *arg1,
 240                                                 int offset,
 241                                                 int fieldno,
 242                                                 struct type *arg_type);
 243
 244 extern struct type *ada_parent_type (struct type *);
 245
 246 extern int ada_is_ignored_field (struct type *, int);
 247
 248 extern int ada_is_constrained_packed_array_type (struct type *);
 249
 250 extern struct value *ada_value_primitive_packed_val (struct value *,
 251                                                      const gdb_byte *,
 252                                                      long, int, int,
 253                                                      struct type *);
 254
 255 extern struct type *ada_coerce_to_simple_array_type (struct type *);
 256
 257 extern bool ada_is_character_type (struct type *);
 258
 259 extern bool ada_is_string_type (struct type *);
 260
 261 extern int ada_is_tagged_type (struct type *, int);
 262
 263 extern int ada_is_tag_type (struct type *);
 264
 265 extern gdb::unique_xmalloc_ptr<char> ada_tag_name (struct value *);
 266
 267 extern struct value *ada_tag_value_at_base_address (struct value *obj);
 268
 269 extern int ada_is_parent_field (struct type *, int);
 270
 271 extern int ada_is_wrapper_field (struct type *, int);
 272
 273 extern int ada_is_variant_part (struct type *, int);
 274
 275 extern struct type *ada_variant_discrim_type (struct type *, struct type *);
 276
 277 extern const char *ada_variant_discrim_name (struct type *);
 278
 279 extern int ada_is_aligner_type (struct type *);
 280
 281 extern struct type *ada_aligned_type (struct type *);
 282
 283 extern const gdb_byte *ada_aligned_value_addr (struct type *,
 284                                                const gdb_byte *);
 285
 286 extern int ada_is_system_address_type (struct type *);
 287
 288 extern int ada_which_variant_applies (struct type *, struct value *);
 289
 290 extern struct type *ada_to_fixed_type (struct type *, const gdb_byte *,
 291                                        CORE_ADDR, struct value *,
 292                                        int check_tag);
 293
 294 extern struct value *ada_to_fixed_value (struct value *val);
 295
 296 extern struct type *ada_template_to_fixed_record_type_1 (struct type *type,
 297                                                          const gdb_byte *valaddr,
 298                                                          CORE_ADDR address,
 299                                                          struct value *dval0,
 300                                                          int keep_dynamic_fields);
 301
 302 extern int ada_name_prefix_len (const char *);
 303
 304 extern const char *ada_type_name (struct type *);
 305
 306 extern struct type *ada_find_parallel_type (struct type *,
 307                                             const char *suffix);
 308
 309 extern bool get_int_var_value (const char *, LONGEST &value);
 310
 311 extern int ada_prefer_type (struct type *, struct type *);
 312
 313 extern struct type *ada_get_base_type (struct type *);
 314
 315 extern struct type *ada_check_typedef (struct type *);
 316
 317 extern std::string ada_encode (const char *);
 318
 319 extern const char *ada_enum_name (const char *);
 320
 321 extern int ada_is_modular_type (struct type *);
 322
 323 extern ULONGEST ada_modulus (struct type *);
 324
 325 extern struct value *ada_value_ind (struct value *);
 326
 327 extern void ada_print_scalar (struct type *, LONGEST, struct ui_file *);
 328
 329 extern int ada_is_range_type_name (const char *);
 330
 331 extern enum ada_renaming_category ada_parse_renaming (struct symbol *,
 332                                                       const char **,
 333                                                       int *, const char **);
 334
 335 extern void ada_find_printable_frame (struct frame_info *fi);
 336
 337 extern char *ada_breakpoint_rewrite (char *, int *);
 338
 339 extern char *ada_main_name (void);
 340
 341 extern void create_ada_exception_catchpoint
 342   (struct gdbarch *gdbarch, enum ada_exception_catchpoint_kind ex_kind,
 343    const std::string &excep_string, const std::string &cond_string, int tempflag,
 344    int disabled, int from_tty);
 345
 346 /* Return true if BP is an Ada catchpoint.  */
 347
 348 extern bool is_ada_exception_catchpoint (breakpoint *bp);
 349
 350 /* Some information about a given Ada exception.  */
 351
 352 struct ada_exc_info
 353 {
 354   /* The name of the exception.  */
 355   const char *name;
 356
 357   /* The address of the symbol corresponding to that exception.  */
 358   CORE_ADDR addr;
 359
 360   bool operator< (const ada_exc_info &) const;
 361   bool operator== (const ada_exc_info &) const;
 362 };
 363
 364 extern std::vector<ada_exc_info> ada_exceptions_list (const char *regexp);
 365
 366 /* Tasking-related: ada-tasks.c */
 367
 368 extern int valid_task_id (int);
 369
 370 extern struct ada_task_info *ada_get_task_info_from_ptid (ptid_t ptid);
 371
 372 extern int ada_get_task_number (thread_info *thread);
 373
 374 typedef gdb::function_view<void (struct ada_task_info *task)>
 375   ada_task_list_iterator_ftype;
 376 extern void iterate_over_live_ada_tasks
 377   (ada_task_list_iterator_ftype iterator);
 378
 379 extern const char *ada_get_tcb_types_info (void);
 380
 381 extern void print_ada_task_info (struct ui_out *uiout,
 382                                  const char *taskno_str,
 383                                  struct inferior *inf);
 384
 385 /* Look for a symbol for an overloaded operator for the operation OP.
 386    PARSE_COMPLETION is true if currently parsing for completion.
 387    NARGS and ARGVEC describe the arguments to the call.  Returns a
 388    "null" block_symbol if no such operator is found.  */
 389
 390 extern block_symbol ada_find_operator_symbol (enum exp_opcode op,
 391                                               bool parse_completion,
 392                                               int nargs, value *argvec[]);
 393
 394 /* Resolve a function call, selecting among possible function symbols.
 395    SYM and BLOCK are passed to ada_lookup_symbol_list.  CONTEXT_TYPE
 396    describes the calling context.  PARSE_COMPLETION is true if
 397    currently parsing for completion.  NARGS and ARGVEC describe the
 398    arguments to the call.  This returns the chosen symbol and will
 399    update TRACKER accordingly.  */
 400
 401 extern block_symbol ada_resolve_funcall (struct symbol *sym,
 402                                          const struct block *block,
 403                                          struct type *context_type,
 404                                          bool parse_completion,
 405                                          int nargs, value *argvec[],
 406                                          innermost_block_tracker *tracker);
 407
 408 /* Resolve a symbol reference, selecting among possible values.  SYM
 409    and BLOCK are passed to ada_lookup_symbol_list.  CONTEXT_TYPE
 410    describes the calling context.  PARSE_COMPLETION is true if
 411    currently parsing for completion.  If DEPROCEDURE_P is nonzero,
 412    then a symbol that names a zero-argument function will be passed
 413    through ada_resolve_function.  This returns the chosen symbol and
 414    will update TRACKER accordingly.  */
 415
 416 extern block_symbol ada_resolve_variable (struct symbol *sym,
 417                                           const struct block *block,
 418                                           struct type *context_type,
 419                                           bool parse_completion,
 420                                           int deprocedure_p,
 421                                           innermost_block_tracker *tracker);
 422
 423 /* The type of nth index in arrays of given type (n numbering from 1).
 424    Does not examine memory.  Throws an error if N is invalid or TYPE
 425    is not an array type.  NAME is the name of the Ada attribute being
 426    evaluated ('range, 'first, 'last, or 'length); it is used in building
 427    the error message.  */
 428 extern struct type *ada_index_type (struct type *type, int n,
 429                                     const char *name);
 430
 431 #endif