gdb/ada-lang.h

   1 /* Ada language support definitions for GDB, the GNU debugger.
   2
   3    Copyright (C) 1992, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   4    2007, 2008 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #if !defined (ADA_LANG_H)
  22 #define ADA_LANG_H 1
  23
  24 struct partial_symbol;
  25 struct frame_info;
  26
  27 #include "value.h"
  28 #include "gdbtypes.h"
  29 #include "breakpoint.h"
  30
  31 /* Names of specific files known to be part of the runtime
  32    system and that might consider (confusing) debugging information.
  33    Each name (a basic regular expression string) is followed by a
  34    comma.  FIXME: Should be part of a configuration file. */
  35 #if defined(__alpha__) && defined(__osf__)
  36 #define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
  37    "^[agis]-.*\\.ad[bs]$", \
  38    "/usr/shlib/libpthread\\.so",
  39 #elif defined (__linux__)
  40 #define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
  41    "^[agis]-.*\\.ad[bs]$", \
  42    "/lib.*/libpthread\\.so[.0-9]*$", "/lib.*/libpthread\\.a$", \
  43    "/lib.*/libc\\.so[.0-9]*$", "/lib.*/libc\\.a$",
  44 #endif
  45
  46 #if !defined (ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS)
  47 #define ADA_KNOWN_RUNTIME_FILE_NAME_PATTERNS \
  48    "^[agis]-.*\\.ad[bs]$",
  49 #endif
  50
  51 /* Names of compiler-generated auxiliary functions probably of no
  52    interest to users. Each name (a basic regular expression string)
  53    is followed by a comma. */
  54 #define ADA_KNOWN_AUXILIARY_FUNCTION_NAME_PATTERNS \
  55    "___clean[.$a-zA-Z0-9_]*$",
  56
  57 /* The maximum number of frame levels searched for non-local,
  58  * non-global symbols.  This limit exists as a precaution to prevent
  59  * infinite search loops when the stack is screwed up. */
  60 #define MAX_ENCLOSING_FRAME_LEVELS 7
  61
  62 /* Maximum number of steps followed in looking for the ultimate
  63    referent of a renaming.  This prevents certain infinite loops that
  64    can otherwise result. */
  65 #define MAX_RENAMING_CHAIN_LENGTH 10
  66
  67 struct block;
  68
  69 /* Corresponding encoded/decoded names and opcodes for Ada user-definable
  70    operators. */
  71 struct ada_opname_map
  72 {
  73   const char *encoded;
  74   const char *decoded;
  75   enum exp_opcode op;
  76 };
  77
  78 /* Table of Ada operators in encoded and decoded forms. */
  79 /* Defined in ada-lang.c */
  80 extern const struct ada_opname_map ada_opname_table[];
  81
  82 enum ada_operator
  83   {
  84     /* X IN A'RANGE(N).  N is an immediate operand, surrounded by
  85        BINOP_IN_BOUNDS before and after.  A is an array, X an index
  86        value.  Evaluates to true iff X is within range of the Nth
  87        dimension (1-based) of A.  (A multi-dimensional array
  88        type is represented as array of array of ...) */
  89     BINOP_IN_BOUNDS = OP_EXTENDED0,
  90
  91     /* X IN L .. U.  True iff L <= X <= U.  */
  92     TERNOP_IN_RANGE,
  93
  94     /* Ada attributes ('Foo). */
  95     OP_ATR_FIRST,
  96     OP_ATR_LAST,
  97     OP_ATR_LENGTH,
  98     OP_ATR_IMAGE,
  99     OP_ATR_MAX,
 100     OP_ATR_MIN,
 101     OP_ATR_MODULUS,
 102     OP_ATR_POS,
 103     OP_ATR_SIZE,
 104     OP_ATR_TAG,
 105     OP_ATR_VAL,
 106
 107     /* Ada type qualification.  It is encoded as for UNOP_CAST, above,
 108        and denotes the TYPE'(EXPR) construct. */
 109     UNOP_QUAL,
 110
 111     /* X IN TYPE.  The `TYPE' argument is immediate, with
 112        UNOP_IN_RANGE before and after it. True iff X is a member of
 113        type TYPE (typically a subrange). */
 114     UNOP_IN_RANGE,
 115
 116     /* An aggregate.   A single immediate operand, N>0, gives
 117        the number of component specifications that follow.  The
 118        immediate operand is followed by a second OP_AGGREGATE.
 119        Next come N component specifications.  A component
 120        specification is either an OP_OTHERS (others=>...), an
 121        OP_CHOICES (for named associations), or other expression (for
 122        positional aggregates only).  Aggregates currently
 123        occur only as the right sides of assignments. */
 124     OP_AGGREGATE,
 125
 126     /* An others clause.  Followed by a single expression. */
 127     OP_OTHERS,
 128
 129     /* An aggregate component association.  A single immediate operand, N,
 130        gives the number of choices that follow.  This is followed by a second
 131        OP_CHOICES operator.  Next come N operands, each of which is an
 132        expression, an OP_DISCRETE_RANGE, or an OP_NAME---the latter
 133        for a simple name that must be a record component name and does
 134        not correspond to a single existing symbol.  After the N choice
 135        indicators comes an expression giving the value.
 136
 137        In an aggregate such as (X => E1, ...), where X is a simple
 138        name, X could syntactically be either a component_selector_name
 139        or an expression used as a discrete_choice, depending on the
 140        aggregate's type context.  Since this is not known at parsing
 141        time, we don't attempt to disambiguate X if it has multiple
 142        definitions, but instead supply an OP_NAME.  If X has a single
 143        definition, we represent it with an OP_VAR_VALUE, even though
 144        it may turn out to be within a record aggregate.  Aggregate
 145        evaluation can use either OP_NAMEs or OP_VAR_VALUEs to get a
 146        record field name, and can evaluate OP_VAR_VALUE normally to
 147        get its value as an expression.  Unfortunately, we lose out in
 148        cases where X has multiple meanings and is part of an array
 149        aggregate.  I hope these are not common enough to annoy users,
 150        who can work around the problem in any case by putting
 151        parentheses around X. */
 152     OP_CHOICES,
 153
 154     /* A positional aggregate component association.  The operator is
 155        followed by a single integer indicating the position in the
 156        aggregate (0-based), followed by a second OP_POSITIONAL.  Next
 157        follows a single expression giving the component value.  */
 158     OP_POSITIONAL,
 159
 160     /* A range of values.  Followed by two expressions giving the
 161        upper and lower bounds of the range. */
 162     OP_DISCRETE_RANGE,
 163
 164     /* End marker */
 165     OP_ADA_LAST
 166   };
 167
 168 /* A tuple, (symbol, block), representing one instance of a
 169  * symbol-lookup operation. */
 170 struct ada_symbol_info {
 171   struct symbol* sym;
 172   struct block* block;
 173 };
 174
 175 /* Denotes a type of renaming symbol (see ada_parse_renaming).  */
 176 enum ada_renaming_category
 177   {
 178     /* Indicates a symbol that does not encode a renaming.  */
 179     ADA_NOT_RENAMING,
 180
 181     /* For symbols declared
 182          Foo : TYPE renamed OBJECT;  */
 183     ADA_OBJECT_RENAMING,
 184
 185     /* For symbols declared
 186          Foo : exception renames EXCEPTION;  */
 187     ADA_EXCEPTION_RENAMING,
 188     /* For packages declared
 189           package Foo renames PACKAGE; */
 190     ADA_PACKAGE_RENAMING,
 191     /* For subprograms declared
 192           SUBPROGRAM_SPEC renames SUBPROGRAM;
 193        (Currently not used).  */
 194     ADA_SUBPROGRAM_RENAMING
 195   };
 196
 197 /* Ada task structures.  */
 198
 199 /* Ada task control block, as defined in the GNAT runt-time library.  */
 200
 201 struct task_control_block
 202 {
 203   char state;
 204   CORE_ADDR parent;
 205   int priority;
 206   char image [32];
 207   int image_len;    /* This field is not always present in the ATCB.  */
 208   CORE_ADDR call;
 209   CORE_ADDR thread;
 210   CORE_ADDR lwp;    /* This field is not always present in the ATCB.  */
 211
 212   /* If the task is waiting on a task entry, this field contains the
 213    task_id of the other task.  */
 214   CORE_ADDR called_task;
 215 };
 216
 217 struct task_ptid
 218 {
 219   int pid;                      /* The Process id */
 220   long lwp;                     /* The Light Weight Process id */
 221   long tid;                     /* The Thread id */
 222 };
 223 typedef struct task_ptid task_ptid_t;
 224
 225 struct task_entry
 226 {
 227   CORE_ADDR task_id;
 228   struct task_control_block atcb;
 229   int task_num;
 230   int known_tasks_index;
 231   struct task_entry *next_task;
 232   task_ptid_t task_ptid;
 233   int stack_per;
 234 };
 235
 236 /* task entry list.  */
 237 extern struct task_entry *task_list;
 238
 239
 240 /* Assuming V points to an array of S objects,  make sure that it contains at
 241    least M objects, updating V and S as necessary. */
 242
 243 #define GROW_VECT(v, s, m)                                              \
 244    if ((s) < (m)) (v) = grow_vect (v, &(s), m, sizeof *(v));
 245
 246 extern void *grow_vect (void *, size_t *, size_t, int);
 247
 248 extern int ada_get_field_index (const struct type *type,
 249                                 const char *field_name,
 250                                 int maybe_missing);
 251
 252 extern int ada_parse (void);    /* Defined in ada-exp.y */
 253
 254 extern void ada_error (char *); /* Defined in ada-exp.y */
 255
 256                         /* Defined in ada-typeprint.c */
 257 extern void ada_print_type (struct type *, char *, struct ui_file *, int,
 258                             int);
 259
 260 extern int ada_val_print (struct type *, const gdb_byte *, int, CORE_ADDR,
 261                           struct ui_file *, int, int, int,
 262                           enum val_prettyprint);
 263
 264 extern int ada_value_print (struct value *, struct ui_file *, int,
 265                             enum val_prettyprint);
 266
 267                                 /* Defined in ada-lang.c */
 268
 269 extern struct value *value_from_contents_and_address (struct type *,
 270                                                       const gdb_byte *,
 271                                                       CORE_ADDR);
 272
 273 extern void ada_emit_char (int, struct ui_file *, int, int);
 274
 275 extern void ada_printchar (int, struct ui_file *);
 276
 277 extern void ada_printstr (struct ui_file *, const gdb_byte *,
 278                           unsigned int, int, int);
 279
 280 struct value *ada_convert_actual (struct value *actual,
 281                                   struct type *formal_type0,
 282                                   CORE_ADDR *sp);
 283
 284 extern struct value *ada_value_subscript (struct value *, int,
 285                                           struct value **);
 286
 287 extern struct type *ada_array_element_type (struct type *, int);
 288
 289 extern int ada_array_arity (struct type *);
 290
 291 struct type *ada_type_of_array (struct value *, int);
 292
 293 extern struct value *ada_coerce_to_simple_array_ptr (struct value *);
 294
 295 extern int ada_is_simple_array_type (struct type *);
 296
 297 extern int ada_is_array_descriptor_type (struct type *);
 298
 299 extern int ada_is_bogus_array_descriptor (struct type *);
 300
 301 extern struct type *ada_index_type (struct type *, int);
 302
 303 extern struct value *ada_array_bound (struct value *, int, int);
 304
 305 extern char *ada_decode_symbol (const struct general_symbol_info*);
 306
 307 extern const char *ada_decode (const char*);
 308
 309 extern enum language ada_update_initial_language (enum language,
 310                                                   struct partial_symtab*);
 311
 312 extern void clear_ada_sym_cache (void);
 313
 314 extern int ada_lookup_symbol_list (const char *, const struct block *,
 315                                    domain_enum, struct ada_symbol_info**);
 316
 317 extern char *ada_fold_name (const char *);
 318
 319 extern struct symbol *ada_lookup_symbol (const char *, const struct block *,
 320                                          domain_enum, int *);
 321
 322 extern struct symbol *
 323 ada_lookup_encoded_symbol (const char *, const struct block *,
 324                            domain_enum namespace, struct block **);
 325
 326 extern struct minimal_symbol *ada_lookup_simple_minsym (const char *);
 327
 328 extern void ada_fill_in_ada_prototype (struct symbol *);
 329
 330 extern int user_select_syms (struct ada_symbol_info *, int, int);
 331
 332 extern int get_selections (int *, int, int, int, char *);
 333
 334 extern char *ada_start_decode_line_1 (char *);
 335
 336 extern struct symtabs_and_lines ada_finish_decode_line_1 (char **,
 337                                                           struct symtab *,
 338                                                           int, char ***);
 339
 340 extern struct symtabs_and_lines ada_sals_for_line (const char*, int,
 341                                                    int, char***, int);
 342
 343 extern int ada_scan_number (const char *, int, LONGEST *, int *);
 344
 345 extern struct type *ada_parent_type (struct type *);
 346
 347 extern int ada_is_ignored_field (struct type *, int);
 348
 349 extern int ada_is_packed_array_type (struct type *);
 350
 351 extern struct value *ada_value_primitive_packed_val (struct value *,
 352                                                      const gdb_byte *,
 353                                                      long, int, int,
 354                                                      struct type *);
 355
 356 extern struct type *ada_coerce_to_simple_array_type (struct type *);
 357
 358 extern int ada_is_character_type (struct type *);
 359
 360 extern int ada_is_string_type (struct type *);
 361
 362 extern int ada_is_tagged_type (struct type *, int);
 363
 364 extern int ada_is_tag_type (struct type *);
 365
 366 extern struct type *ada_tag_type (struct value *);
 367
 368 extern struct value *ada_value_tag (struct value *);
 369
 370 extern const char *ada_tag_name (struct value *);
 371
 372 extern int ada_is_parent_field (struct type *, int);
 373
 374 extern int ada_is_wrapper_field (struct type *, int);
 375
 376 extern int ada_is_variant_part (struct type *, int);
 377
 378 extern struct type *ada_variant_discrim_type (struct type *, struct type *);
 379
 380 extern int ada_is_others_clause (struct type *, int);
 381
 382 extern int ada_in_variant (LONGEST, struct type *, int);
 383
 384 extern char *ada_variant_discrim_name (struct type *);
 385
 386 extern struct value *ada_value_struct_elt (struct value *, char *, int);
 387
 388 extern int ada_is_aligner_type (struct type *);
 389
 390 extern struct type *ada_aligned_type (struct type *);
 391
 392 extern const gdb_byte *ada_aligned_value_addr (struct type *,
 393                                                const gdb_byte *);
 394
 395 extern const char *ada_attribute_name (enum exp_opcode);
 396
 397 extern int ada_is_fixed_point_type (struct type *);
 398
 399 extern int ada_is_system_address_type (struct type *);
 400
 401 extern DOUBLEST ada_delta (struct type *);
 402
 403 extern DOUBLEST ada_fixed_to_float (struct type *, LONGEST);
 404
 405 extern LONGEST ada_float_to_fixed (struct type *, DOUBLEST);
 406
 407 extern int ada_is_vax_floating_type (struct type *);
 408
 409 extern int ada_vax_float_type_suffix (struct type *);
 410
 411 extern struct value *ada_vax_float_print_function (struct type *);
 412
 413 extern struct type *ada_system_address_type (void);
 414
 415 extern int ada_which_variant_applies (struct type *, struct type *,
 416                                       const gdb_byte *);
 417
 418 extern struct type *ada_to_fixed_type (struct type *, const gdb_byte *,
 419                                        CORE_ADDR, struct value *,
 420                                        int check_tag);
 421
 422 extern struct type *ada_template_to_fixed_record_type_1 (struct type *type,
 423                                                          const gdb_byte *valaddr,
 424                                                          CORE_ADDR address,
 425                                                          struct value *dval0,
 426                                                          int keep_dynamic_fields);
 427
 428 extern int ada_name_prefix_len (const char *);
 429
 430 extern char *ada_type_name (struct type *);
 431
 432 extern struct type *ada_find_parallel_type (struct type *,
 433                                             const char *suffix);
 434
 435 extern LONGEST get_int_var_value (char *, int *);
 436
 437 extern struct symbol *ada_find_any_symbol (const char *name);
 438
 439 extern struct type *ada_find_any_type (const char *name);
 440
 441 extern struct symbol *ada_find_renaming_symbol (const char *name,
 442                                                 struct block *block);
 443
 444 extern int ada_prefer_type (struct type *, struct type *);
 445
 446 extern struct type *ada_get_base_type (struct type *);
 447
 448 extern struct type *ada_check_typedef (struct type *);
 449
 450 extern char *ada_encode (const char *);
 451
 452 extern const char *ada_enum_name (const char *);
 453
 454 extern int ada_is_modular_type (struct type *);
 455
 456 extern ULONGEST ada_modulus (struct type *);
 457
 458 extern struct value *ada_value_ind (struct value *);
 459
 460 extern void ada_print_scalar (struct type *, LONGEST, struct ui_file *);
 461
 462 extern int ada_is_range_type_name (const char *);
 463
 464 extern enum ada_renaming_category ada_parse_renaming (struct symbol *,
 465                                                       const char **,
 466                                                       int *, const char **);
 467
 468 extern char *ada_breakpoint_rewrite (char *, int *);
 469
 470 extern char *ada_main_name (void);
 471
 472 /* Tasking-related: ada-tasks.c */
 473
 474 extern int valid_task_id (int);
 475
 476 extern void init_task_list (void);
 477
 478 extern int ada_is_exception_breakpoint (bpstat bs);
 479
 480 extern void ada_adjust_exception_stop (bpstat bs);
 481
 482 extern void ada_print_exception_stop (bpstat bs);
 483
 484 extern int ada_get_current_task (ptid_t);
 485
 486 extern int breakpoint_ada_task_match (CORE_ADDR, ptid_t);
 487
 488 extern int ada_print_exception_breakpoint_nontask (struct breakpoint *);
 489
 490 extern void ada_print_exception_breakpoint_task (struct breakpoint *);
 491
 492 extern void ada_reset_thread_registers (void);
 493
 494 extern int ada_build_task_list (void);
 495
 496 extern int ada_exception_catchpoint_p (struct breakpoint *b);
 497
 498 extern struct symtab_and_line
 499   ada_decode_exception_location (char *args, char **addr_string,
 500                                  char **exp_string, char **cond_string,
 501                                  struct expression **cond,
 502                                  struct breakpoint_ops **ops);
 503
 504 extern struct symtab_and_line
 505   ada_decode_assert_location (char *args, char **addr_string,
 506                               struct breakpoint_ops **ops);
 507
 508
 509 #endif