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 void ada_ensure_varsize_limit (const struct type *type);
 153
 154 extern int ada_get_field_index (const struct type *type,
 155                                 const char *field_name,
 156                                 int maybe_missing);
 157
 158 extern int ada_parse (struct parser_state *);    /* Defined in ada-exp.y */
 159
 160                         /* Defined in ada-typeprint.c */
 161 extern void ada_print_type (struct type *, const char *, struct ui_file *, int,
 162                             int, const struct type_print_options *);
 163
 164 extern void ada_print_typedef (struct type *type, struct symbol *new_symbol,
 165                                struct ui_file *stream);
 166
 167 /* Implement la_value_print_inner for Ada.  */
 168
 169 extern void ada_value_print_inner (struct value *, struct ui_file *, int,
 170                                    const struct value_print_options *);
 171
 172 extern void ada_value_print (struct value *, struct ui_file *,
 173                              const struct value_print_options *);
 174
 175                                 /* Defined in ada-lang.c */
 176
 177 extern void ada_emit_char (int, struct type *, struct ui_file *, int, int);
 178
 179 extern void ada_printchar (int, struct type *, struct ui_file *);
 180
 181 extern void ada_printstr (struct ui_file *, struct type *, const gdb_byte *,
 182                           unsigned int, const char *, int,
 183                           const struct value_print_options *);
 184
 185 struct value *ada_convert_actual (struct value *actual,
 186                                   struct type *formal_type0);
 187
 188 extern bool ada_is_access_to_unconstrained_array (struct type *type);
 189
 190 extern struct value *ada_value_subscript (struct value *, int,
 191                                           struct value **);
 192
 193 extern void ada_fixup_array_indexes_type (struct type *index_desc_type);
 194
 195 extern struct type *ada_array_element_type (struct type *, int);
 196
 197 extern int ada_array_arity (struct type *);
 198
 199 extern struct value *ada_coerce_to_simple_array_ptr (struct value *);
 200
 201 struct value *ada_coerce_to_simple_array (struct value *);
 202
 203 extern int ada_is_simple_array_type (struct type *);
 204
 205 extern int ada_is_array_descriptor_type (struct type *);
 206
 207 extern int ada_is_bogus_array_descriptor (struct type *);
 208
 209 extern LONGEST ada_discrete_type_low_bound (struct type *);
 210
 211 extern LONGEST ada_discrete_type_high_bound (struct type *);
 212
 213 extern struct value *ada_get_decoded_value (struct value *value);
 214
 215 extern struct type *ada_get_decoded_type (struct type *type);
 216
 217 extern const char *ada_decode_symbol (const struct general_symbol_info *);
 218
 219 extern std::string ada_decode (const char*);
 220
 221 extern std::vector<struct block_symbol> ada_lookup_symbol_list
 222      (const char *, const struct block *, domain_enum);
 223
 224 extern struct block_symbol ada_lookup_symbol (const char *,
 225                                               const struct block *,
 226                                               domain_enum);
 227
 228 extern void ada_lookup_encoded_symbol
 229   (const char *name, const struct block *block, domain_enum domain,
 230    struct block_symbol *symbol_info);
 231
 232 extern struct bound_minimal_symbol ada_lookup_simple_minsym (const char *);
 233
 234 extern int ada_scan_number (const char *, int, LONGEST *, int *);
 235
 236 extern struct value *ada_value_primitive_field (struct value *arg1,
 237                                                 int offset,
 238                                                 int fieldno,
 239                                                 struct type *arg_type);
 240
 241 extern struct type *ada_parent_type (struct type *);
 242
 243 extern int ada_is_ignored_field (struct type *, int);
 244
 245 extern int ada_is_constrained_packed_array_type (struct type *);
 246
 247 extern struct value *ada_value_primitive_packed_val (struct value *,
 248                                                      const gdb_byte *,
 249                                                      long, int, int,
 250                                                      struct type *);
 251
 252 extern struct type *ada_coerce_to_simple_array_type (struct type *);
 253
 254 extern bool ada_is_character_type (struct type *);
 255
 256 extern bool ada_is_string_type (struct type *);
 257
 258 extern int ada_is_tagged_type (struct type *, int);
 259
 260 extern int ada_is_tag_type (struct type *);
 261
 262 extern gdb::unique_xmalloc_ptr<char> ada_tag_name (struct value *);
 263
 264 extern struct value *ada_tag_value_at_base_address (struct value *obj);
 265
 266 extern int ada_is_parent_field (struct type *, int);
 267
 268 extern int ada_is_wrapper_field (struct type *, int);
 269
 270 extern int ada_is_variant_part (struct type *, int);
 271
 272 extern struct type *ada_variant_discrim_type (struct type *, struct type *);
 273
 274 extern const char *ada_variant_discrim_name (struct type *);
 275
 276 extern int ada_is_aligner_type (struct type *);
 277
 278 extern struct type *ada_aligned_type (struct type *);
 279
 280 extern const gdb_byte *ada_aligned_value_addr (struct type *,
 281                                                const gdb_byte *);
 282
 283 extern int ada_is_system_address_type (struct type *);
 284
 285 extern int ada_which_variant_applies (struct type *, struct value *);
 286
 287 extern struct type *ada_to_fixed_type (struct type *, const gdb_byte *,
 288                                        CORE_ADDR, struct value *,
 289                                        int check_tag);
 290
 291 extern struct value *ada_to_fixed_value (struct value *val);
 292
 293 extern struct type *ada_template_to_fixed_record_type_1 (struct type *type,
 294                                                          const gdb_byte *valaddr,
 295                                                          CORE_ADDR address,
 296                                                          struct value *dval0,
 297                                                          int keep_dynamic_fields);
 298
 299 extern int ada_name_prefix_len (const char *);
 300
 301 extern const char *ada_type_name (struct type *);
 302
 303 extern struct type *ada_find_parallel_type (struct type *,
 304                                             const char *suffix);
 305
 306 extern bool get_int_var_value (const char *, LONGEST &value);
 307
 308 extern int ada_prefer_type (struct type *, struct type *);
 309
 310 extern struct type *ada_get_base_type (struct type *);
 311
 312 extern struct type *ada_check_typedef (struct type *);
 313
 314 extern std::string ada_encode (const char *);
 315
 316 extern const char *ada_enum_name (const char *);
 317
 318 extern int ada_is_modular_type (struct type *);
 319
 320 extern ULONGEST ada_modulus (struct type *);
 321
 322 extern struct value *ada_value_ind (struct value *);
 323
 324 extern void ada_print_scalar (struct type *, LONGEST, struct ui_file *);
 325
 326 extern int ada_is_range_type_name (const char *);
 327
 328 extern enum ada_renaming_category ada_parse_renaming (struct symbol *,
 329                                                       const char **,
 330                                                       int *, const char **);
 331
 332 extern void ada_find_printable_frame (struct frame_info *fi);
 333
 334 extern char *ada_breakpoint_rewrite (char *, int *);
 335
 336 extern char *ada_main_name (void);
 337
 338 extern void create_ada_exception_catchpoint
 339   (struct gdbarch *gdbarch, enum ada_exception_catchpoint_kind ex_kind,
 340    const std::string &excep_string, const std::string &cond_string, int tempflag,
 341    int disabled, int from_tty);
 342
 343 /* Return true if BP is an Ada catchpoint.  */
 344
 345 extern bool is_ada_exception_catchpoint (breakpoint *bp);
 346
 347 /* Some information about a given Ada exception.  */
 348
 349 struct ada_exc_info
 350 {
 351   /* The name of the exception.  */
 352   const char *name;
 353
 354   /* The address of the symbol corresponding to that exception.  */
 355   CORE_ADDR addr;
 356
 357   bool operator< (const ada_exc_info &) const;
 358   bool operator== (const ada_exc_info &) const;
 359 };
 360
 361 extern std::vector<ada_exc_info> ada_exceptions_list (const char *regexp);
 362
 363 /* Tasking-related: ada-tasks.c */
 364
 365 extern int valid_task_id (int);
 366
 367 extern struct ada_task_info *ada_get_task_info_from_ptid (ptid_t ptid);
 368
 369 extern int ada_get_task_number (thread_info *thread);
 370
 371 typedef gdb::function_view<void (struct ada_task_info *task)>
 372   ada_task_list_iterator_ftype;
 373 extern void iterate_over_live_ada_tasks
 374   (ada_task_list_iterator_ftype iterator);
 375
 376 extern const char *ada_get_tcb_types_info (void);
 377
 378 extern void print_ada_task_info (struct ui_out *uiout,
 379                                  const char *taskno_str,
 380                                  struct inferior *inf);
 381
 382 /* Look for a symbol for an overloaded operator for the operation OP.
 383    PARSE_COMPLETION is true if currently parsing for completion.
 384    NARGS and ARGVEC describe the arguments to the call.  Returns a
 385    "null" block_symbol if no such operator is found.  */
 386
 387 extern block_symbol ada_find_operator_symbol (enum exp_opcode op,
 388                                               bool parse_completion,
 389                                               int nargs, value *argvec[]);
 390
 391 /* Resolve a function call, selecting among possible function symbols.
 392    SYM and BLOCK are passed to ada_lookup_symbol_list.  CONTEXT_TYPE
 393    describes the calling context.  PARSE_COMPLETION is true if
 394    currently parsing for completion.  NARGS and ARGVEC describe the
 395    arguments to the call.  This returns the chosen symbol and will
 396    update TRACKER accordingly.  */
 397
 398 extern block_symbol ada_resolve_funcall (struct symbol *sym,
 399                                          const struct block *block,
 400                                          struct type *context_type,
 401                                          bool parse_completion,
 402                                          int nargs, value *argvec[],
 403                                          innermost_block_tracker *tracker);
 404
 405 /* Resolve a symbol reference, selecting among possible values.  SYM
 406    and BLOCK are passed to ada_lookup_symbol_list.  CONTEXT_TYPE
 407    describes the calling context.  PARSE_COMPLETION is true if
 408    currently parsing for completion.  If DEPROCEDURE_P is nonzero,
 409    then a symbol that names a zero-argument function will be passed
 410    through ada_resolve_function.  This returns the chosen symbol and
 411    will update TRACKER accordingly.  */
 412
 413 extern block_symbol ada_resolve_variable (struct symbol *sym,
 414                                           const struct block *block,
 415                                           struct type *context_type,
 416                                           bool parse_completion,
 417                                           int deprocedure_p,
 418                                           innermost_block_tracker *tracker);
 419
 420 /* The type of nth index in arrays of given type (n numbering from 1).
 421    Does not examine memory.  Throws an error if N is invalid or TYPE
 422    is not an array type.  NAME is the name of the Ada attribute being
 423    evaluated ('range, 'first, 'last, or 'length); it is used in building
 424    the error message.  */
 425 extern struct type *ada_index_type (struct type *type, int n,
 426                                     const char *name);
 427
 428 #endif