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 triple, (symbol, block, symtab), representing one instance of a
 169  * symbol-lookup operation. */
 170 struct ada_symbol_info {
 171   struct symbol* sym;
 172   struct block* block;
 173   struct symtab* symtab;
 174 };
 175
 176 /* Denotes a type of renaming symbol (see ada_parse_renaming).  */
 177 enum ada_renaming_category
 178   {
 179     /* Indicates a symbol that does not encode a renaming.  */
 180     ADA_NOT_RENAMING,
 181
 182     /* For symbols declared
 183          Foo : TYPE renamed OBJECT;  */
 184     ADA_OBJECT_RENAMING,
 185
 186     /* For symbols declared
 187          Foo : exception renames EXCEPTION;  */
 188     ADA_EXCEPTION_RENAMING,
 189     /* For packages declared
 190           package Foo renames PACKAGE; */
 191     ADA_PACKAGE_RENAMING,
 192     /* For subprograms declared
 193           SUBPROGRAM_SPEC renames SUBPROGRAM;
 194        (Currently not used).  */
 195     ADA_SUBPROGRAM_RENAMING
 196   };
 197
 198 /* Ada task structures.  */
 199
 200 /* Ada task control block, as defined in the GNAT runt-time library.  */
 201
 202 struct task_control_block
 203 {
 204   char state;
 205   CORE_ADDR parent;
 206   int priority;
 207   char image [32];
 208   int image_len;    /* This field is not always present in the ATCB.  */
 209   CORE_ADDR call;
 210   CORE_ADDR thread;
 211   CORE_ADDR lwp;    /* This field is not always present in the ATCB.  */
 212
 213   /* If the task is waiting on a task entry, this field contains the
 214    task_id of the other task.  */
 215   CORE_ADDR called_task;
 216 };
 217
 218 struct task_ptid
 219 {
 220   int pid;                      /* The Process id */
 221   long lwp;                     /* The Light Weight Process id */
 222   long tid;                     /* The Thread id */
 223 };
 224 typedef struct task_ptid task_ptid_t;
 225
 226 struct task_entry
 227 {
 228   CORE_ADDR task_id;
 229   struct task_control_block atcb;
 230   int task_num;
 231   int known_tasks_index;
 232   struct task_entry *next_task;
 233   task_ptid_t task_ptid;
 234   int stack_per;
 235 };
 236
 237 /* task entry list.  */
 238 extern struct task_entry *task_list;
 239
 240
 241 /* Assuming V points to an array of S objects,  make sure that it contains at
 242    least M objects, updating V and S as necessary. */
 243
 244 #define GROW_VECT(v, s, m)                                              \
 245    if ((s) < (m)) (v) = grow_vect (v, &(s), m, sizeof *(v));
 246
 247 extern void *grow_vect (void *, size_t *, size_t, int);
 248
 249 extern int ada_get_field_index (const struct type *type,
 250                                 const char *field_name,
 251                                 int maybe_missing);
 252
 253 extern int ada_parse (void);    /* Defined in ada-exp.y */
 254
 255 extern void ada_error (char *); /* Defined in ada-exp.y */
 256
 257                         /* Defined in ada-typeprint.c */
 258 extern void ada_print_type (struct type *, char *, struct ui_file *, int,
 259                             int);
 260
 261 extern int ada_val_print (struct type *, const gdb_byte *, int, CORE_ADDR,
 262                           struct ui_file *, int, int, int,
 263                           enum val_prettyprint);
 264
 265 extern int ada_value_print (struct value *, struct ui_file *, int,
 266                             enum val_prettyprint);
 267
 268                                 /* Defined in ada-lang.c */
 269
 270 extern struct value *value_from_contents_and_address (struct type *,
 271                                                       const gdb_byte *,
 272                                                       CORE_ADDR);
 273
 274 extern void ada_emit_char (int, struct ui_file *, int, int);
 275
 276 extern void ada_printchar (int, struct ui_file *);
 277
 278 extern void ada_printstr (struct ui_file *, const gdb_byte *,
 279                           unsigned int, int, int);
 280
 281 struct value *ada_convert_actual (struct value *actual,
 282                                   struct type *formal_type0,
 283                                   CORE_ADDR *sp);
 284
 285 extern struct value *ada_value_subscript (struct value *, int,
 286                                           struct value **);
 287
 288 extern struct type *ada_array_element_type (struct type *, int);
 289
 290 extern int ada_array_arity (struct type *);
 291
 292 struct type *ada_type_of_array (struct value *, int);
 293
 294 extern struct value *ada_coerce_to_simple_array_ptr (struct value *);
 295
 296 extern int ada_is_simple_array_type (struct type *);
 297
 298 extern int ada_is_array_descriptor_type (struct type *);
 299
 300 extern int ada_is_bogus_array_descriptor (struct type *);
 301
 302 extern struct type *ada_index_type (struct type *, int);
 303
 304 extern struct value *ada_array_bound (struct value *, int, int);
 305
 306 extern char *ada_decode_symbol (const struct general_symbol_info*);
 307
 308 extern const char *ada_decode (const char*);
 309
 310 extern enum language ada_update_initial_language (enum language,
 311                                                   struct partial_symtab*);
 312
 313 extern void clear_ada_sym_cache (void);
 314
 315 extern int ada_lookup_symbol_list (const char *, const struct block *,
 316                                    domain_enum, struct ada_symbol_info**);
 317
 318 extern char *ada_fold_name (const char *);
 319
 320 extern struct symbol *ada_lookup_symbol (const char *, const struct block *,
 321                                          domain_enum, int *,
 322                                          struct symtab **);
 323
 324 extern struct symbol *
 325 ada_lookup_encoded_symbol (const char *, const struct block *,
 326                            domain_enum namespace,
 327                            struct block **, struct symtab **);
 328
 329 extern struct minimal_symbol *ada_lookup_simple_minsym (const char *);
 330
 331 extern void ada_fill_in_ada_prototype (struct symbol *);
 332
 333 extern int user_select_syms (struct ada_symbol_info *, int, int);
 334
 335 extern int get_selections (int *, int, int, int, char *);
 336
 337 extern char *ada_start_decode_line_1 (char *);
 338
 339 extern struct symtabs_and_lines ada_finish_decode_line_1 (char **,
 340                                                           struct symtab *,
 341                                                           int, char ***);
 342
 343 extern struct symtabs_and_lines ada_sals_for_line (const char*, int,
 344                                                    int, char***, int);
 345
 346 extern int ada_scan_number (const char *, int, LONGEST *, int *);
 347
 348 extern struct type *ada_parent_type (struct type *);
 349
 350 extern int ada_is_ignored_field (struct type *, int);
 351
 352 extern int ada_is_packed_array_type (struct type *);
 353
 354 extern struct value *ada_value_primitive_packed_val (struct value *,
 355                                                      const gdb_byte *,
 356                                                      long, int, int,
 357                                                      struct type *);
 358
 359 extern struct type *ada_coerce_to_simple_array_type (struct type *);
 360
 361 extern int ada_is_character_type (struct type *);
 362
 363 extern int ada_is_string_type (struct type *);
 364
 365 extern int ada_is_tagged_type (struct type *, int);
 366
 367 extern int ada_is_tag_type (struct type *);
 368
 369 extern struct type *ada_tag_type (struct value *);
 370
 371 extern struct value *ada_value_tag (struct value *);
 372
 373 extern const char *ada_tag_name (struct value *);
 374
 375 extern int ada_is_parent_field (struct type *, int);
 376
 377 extern int ada_is_wrapper_field (struct type *, int);
 378
 379 extern int ada_is_variant_part (struct type *, int);
 380
 381 extern struct type *ada_variant_discrim_type (struct type *, struct type *);
 382
 383 extern int ada_is_others_clause (struct type *, int);
 384
 385 extern int ada_in_variant (LONGEST, struct type *, int);
 386
 387 extern char *ada_variant_discrim_name (struct type *);
 388
 389 extern struct value *ada_value_struct_elt (struct value *, char *, int);
 390
 391 extern int ada_is_aligner_type (struct type *);
 392
 393 extern struct type *ada_aligned_type (struct type *);
 394
 395 extern const gdb_byte *ada_aligned_value_addr (struct type *,
 396                                                const gdb_byte *);
 397
 398 extern const char *ada_attribute_name (enum exp_opcode);
 399
 400 extern int ada_is_fixed_point_type (struct type *);
 401
 402 extern int ada_is_system_address_type (struct type *);
 403
 404 extern DOUBLEST ada_delta (struct type *);
 405
 406 extern DOUBLEST ada_fixed_to_float (struct type *, LONGEST);
 407
 408 extern LONGEST ada_float_to_fixed (struct type *, DOUBLEST);
 409
 410 extern int ada_is_vax_floating_type (struct type *);
 411
 412 extern int ada_vax_float_type_suffix (struct type *);
 413
 414 extern struct value *ada_vax_float_print_function (struct type *);
 415
 416 extern struct type *ada_system_address_type (void);
 417
 418 extern int ada_which_variant_applies (struct type *, struct type *,
 419                                       const gdb_byte *);
 420
 421 extern struct type *ada_to_fixed_type (struct type *, const gdb_byte *,
 422                                        CORE_ADDR, struct value *,
 423                                        int check_tag);
 424
 425 extern struct type *ada_template_to_fixed_record_type_1 (struct type *type,
 426                                                          const gdb_byte *valaddr,
 427                                                          CORE_ADDR address,
 428                                                          struct value *dval0,
 429                                                          int keep_dynamic_fields);
 430
 431 extern int ada_name_prefix_len (const char *);
 432
 433 extern char *ada_type_name (struct type *);
 434
 435 extern struct type *ada_find_parallel_type (struct type *,
 436                                             const char *suffix);
 437
 438 extern LONGEST get_int_var_value (char *, int *);
 439
 440 extern struct symbol *ada_find_any_symbol (const char *name);
 441
 442 extern struct type *ada_find_any_type (const char *name);
 443
 444 extern struct symbol *ada_find_renaming_symbol (const char *name,
 445                                                 struct block *block);
 446
 447 extern int ada_prefer_type (struct type *, struct type *);
 448
 449 extern struct type *ada_get_base_type (struct type *);
 450
 451 extern struct type *ada_check_typedef (struct type *);
 452
 453 extern char *ada_encode (const char *);
 454
 455 extern const char *ada_enum_name (const char *);
 456
 457 extern int ada_is_modular_type (struct type *);
 458
 459 extern ULONGEST ada_modulus (struct type *);
 460
 461 extern struct value *ada_value_ind (struct value *);
 462
 463 extern void ada_print_scalar (struct type *, LONGEST, struct ui_file *);
 464
 465 extern int ada_is_range_type_name (const char *);
 466
 467 extern enum ada_renaming_category ada_parse_renaming (struct symbol *,
 468                                                       const char **,
 469                                                       int *, const char **);
 470
 471 extern char *ada_breakpoint_rewrite (char *, int *);
 472
 473 extern char *ada_main_name (void);
 474
 475 /* Tasking-related: ada-tasks.c */
 476
 477 extern int valid_task_id (int);
 478
 479 extern void init_task_list (void);
 480
 481 extern int ada_is_exception_breakpoint (bpstat bs);
 482
 483 extern void ada_adjust_exception_stop (bpstat bs);
 484
 485 extern void ada_print_exception_stop (bpstat bs);
 486
 487 extern int ada_get_current_task (ptid_t);
 488
 489 extern int breakpoint_ada_task_match (CORE_ADDR, ptid_t);
 490
 491 extern int ada_print_exception_breakpoint_nontask (struct breakpoint *);
 492
 493 extern void ada_print_exception_breakpoint_task (struct breakpoint *);
 494
 495 extern void ada_reset_thread_registers (void);
 496
 497 extern int ada_build_task_list (void);
 498
 499 extern int ada_exception_catchpoint_p (struct breakpoint *b);
 500
 501 extern struct symtab_and_line
 502   ada_decode_exception_location (char *args, char **addr_string,
 503                                  char **exp_string, char **cond_string,
 504                                  struct expression **cond,
 505                                  struct breakpoint_ops **ops);
 506
 507 extern struct symtab_and_line
 508   ada_decode_assert_location (char *args, char **addr_string,
 509                               struct breakpoint_ops **ops);
 510
 511
 512 #endif