gdb/value.h

   1 /* Definitions for values of C expressions, for GDB.
   2
   3    Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
   4    1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   5    2008, 2009 Free Software Foundation, Inc.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #if !defined (VALUE_H)
  23 #define VALUE_H 1
  24
  25 #include "doublest.h"
  26 #include "frame.h"              /* For struct frame_id.  */
  27
  28 struct block;
  29 struct expression;
  30 struct regcache;
  31 struct symbol;
  32 struct type;
  33 struct ui_file;
  34 struct language_defn;
  35 struct value_print_options;
  36
  37 /* The structure which defines the type of a value.  It should never
  38    be possible for a program lval value to survive over a call to the
  39    inferior (i.e. to be put into the history list or an internal
  40    variable).  */
  41
  42 struct value;
  43
  44 /* Needed if another module needs to maintain its own list of values.  */
  45
  46 void value_prepend_to_list (struct value **head, struct value *val);
  47 void value_remove_from_list (struct value **head, struct value *val);
  48
  49 /* Values are stored in a chain, so that they can be deleted easily
  50    over calls to the inferior.  Values assigned to internal variables,
  51    put into the value history or exposed to Python are taken off this
  52    list.  */
  53
  54 struct value *value_next (struct value *);
  55
  56 /* Type of the value.  */
  57
  58 extern struct type *value_type (struct value *);
  59
  60 /* This is being used to change the type of an existing value, that
  61    code should instead be creating a new value with the changed type
  62    (but possibly shared content).  */
  63
  64 extern void deprecated_set_value_type (struct value *value,
  65                                        struct type *type);
  66
  67 /* Only used for bitfields; number of bits contained in them.  */
  68
  69 extern int value_bitsize (struct value *);
  70 extern void set_value_bitsize (struct value *, int bit);
  71
  72 /* Only used for bitfields; position of start of field.  For
  73    gdbarch_bits_big_endian=0 targets, it is the position of the LSB.  For
  74    gdbarch_bits_big_endian=1 targets, it is the position of the MSB.  */
  75
  76 extern int value_bitpos (struct value *);
  77 extern void set_value_bitpos (struct value *, int bit);
  78
  79 /* Only used for bitfields; the containing value.  This allows a
  80    single read from the target when displaying multiple
  81    bitfields.  */
  82
  83 struct value *value_parent (struct value *);
  84
  85 /* Describes offset of a value within lval of a structure in bytes.
  86    If lval == lval_memory, this is an offset to the address.  If lval
  87    == lval_register, this is a further offset from location.address
  88    within the registers structure.  Note also the member
  89    embedded_offset below.  */
  90
  91 extern int value_offset (struct value *);
  92 extern void set_value_offset (struct value *, int offset);
  93
  94 /* The comment from "struct value" reads: ``Is it modifiable?  Only
  95    relevant if lval != not_lval.''.  Shouldn't the value instead be
  96    not_lval and be done with it?  */
  97
  98 extern int deprecated_value_modifiable (struct value *value);
  99 extern void deprecated_set_value_modifiable (struct value *value,
 100                                              int modifiable);
 101
 102 /* If a value represents a C++ object, then the `type' field gives the
 103    object's compile-time type.  If the object actually belongs to some
 104    class derived from `type', perhaps with other base classes and
 105    additional members, then `type' is just a subobject of the real
 106    thing, and the full object is probably larger than `type' would
 107    suggest.
 108
 109    If `type' is a dynamic class (i.e. one with a vtable), then GDB can
 110    actually determine the object's run-time type by looking at the
 111    run-time type information in the vtable.  When this information is
 112    available, we may elect to read in the entire object, for several
 113    reasons:
 114
 115    - When printing the value, the user would probably rather see the
 116      full object, not just the limited portion apparent from the
 117      compile-time type.
 118
 119    - If `type' has virtual base classes, then even printing `type'
 120      alone may require reaching outside the `type' portion of the
 121      object to wherever the virtual base class has been stored.
 122
 123    When we store the entire object, `enclosing_type' is the run-time
 124    type -- the complete object -- and `embedded_offset' is the offset
 125    of `type' within that larger type, in bytes.  The value_contents()
 126    macro takes `embedded_offset' into account, so most GDB code
 127    continues to see the `type' portion of the value, just as the
 128    inferior would.
 129
 130    If `type' is a pointer to an object, then `enclosing_type' is a
 131    pointer to the object's run-time type, and `pointed_to_offset' is
 132    the offset in bytes from the full object to the pointed-to object
 133    -- that is, the value `embedded_offset' would have if we followed
 134    the pointer and fetched the complete object.  (I don't really see
 135    the point.  Why not just determine the run-time type when you
 136    indirect, and avoid the special case?  The contents don't matter
 137    until you indirect anyway.)
 138
 139    If we're not doing anything fancy, `enclosing_type' is equal to
 140    `type', and `embedded_offset' is zero, so everything works
 141    normally.  */
 142
 143 extern struct type *value_enclosing_type (struct value *);
 144 extern struct value *value_change_enclosing_type (struct value *val,
 145                                                   struct type *new_type);
 146 extern int value_pointed_to_offset (struct value *value);
 147 extern void set_value_pointed_to_offset (struct value *value, int val);
 148 extern int value_embedded_offset (struct value *value);
 149 extern void set_value_embedded_offset (struct value *value, int val);
 150
 151 /* For lval_computed values, this structure holds functions used to
 152    retrieve and set the value (or portions of the value).
 153
 154    For each function, 'V' is the 'this' pointer: an lval_funcs
 155    function F may always assume that the V it receives is an
 156    lval_computed value, and has F in the appropriate slot of its
 157    lval_funcs structure.  */
 158
 159 struct lval_funcs
 160 {
 161   /* Fill in VALUE's contents.  This is used to "un-lazy" values.  If
 162      a problem arises in obtaining VALUE's bits, this function should
 163      call 'error'.  */
 164   void (*read) (struct value *v);
 165
 166   /* Handle an assignment TOVAL = FROMVAL by writing the value of
 167      FROMVAL to TOVAL's location.  The contents of TOVAL have not yet
 168      been updated.  If a problem arises in doing so, this function
 169      should call 'error'.  */
 170   void (*write) (struct value *toval, struct value *fromval);
 171
 172   /* Return a duplicate of VALUE's closure, for use in a new value.
 173      This may simply return the same closure, if VALUE's is
 174      reference-counted or statically allocated.
 175
 176      This may be NULL, in which case VALUE's closure is re-used in the
 177      new value.  */
 178   void *(*copy_closure) (struct value *v);
 179
 180   /* Drop VALUE's reference to its closure.  Maybe this frees the
 181      closure; maybe this decrements a reference count; maybe the
 182      closure is statically allocated and this does nothing.
 183
 184      This may be NULL, in which case no action is taken to free
 185      VALUE's closure.  */
 186   void (*free_closure) (struct value *v);
 187 };
 188
 189 /* Create a computed lvalue, with type TYPE, function pointers FUNCS,
 190    and closure CLOSURE.  */
 191
 192 extern struct value *allocate_computed_value (struct type *type,
 193                                               struct lval_funcs *funcs,
 194                                               void *closure);
 195
 196 /* If VALUE is lval_computed, return its lval_funcs structure.  */
 197
 198 extern struct lval_funcs *value_computed_funcs (struct value *value);
 199
 200 /* If VALUE is lval_computed, return its closure.  The meaning of the
 201    returned value depends on the functions VALUE uses.  */
 202
 203 extern void *value_computed_closure (struct value *value);
 204
 205 /* If zero, contents of this value are in the contents field.  If
 206    nonzero, contents are in inferior.  If the lval field is lval_memory,
 207    the contents are in inferior memory at location.address plus offset.
 208    The lval field may also be lval_register.
 209
 210    WARNING: This field is used by the code which handles watchpoints
 211    (see breakpoint.c) to decide whether a particular value can be
 212    watched by hardware watchpoints.  If the lazy flag is set for some
 213    member of a value chain, it is assumed that this member of the
 214    chain doesn't need to be watched as part of watching the value
 215    itself.  This is how GDB avoids watching the entire struct or array
 216    when the user wants to watch a single struct member or array
 217    element.  If you ever change the way lazy flag is set and reset, be
 218    sure to consider this use as well!  */
 219
 220 extern int value_lazy (struct value *);
 221 extern void set_value_lazy (struct value *value, int val);
 222
 223 /* value_contents() and value_contents_raw() both return the address
 224    of the gdb buffer used to hold a copy of the contents of the lval.
 225    value_contents() is used when the contents of the buffer are needed
 226    -- it uses value_fetch_lazy() to load the buffer from the process
 227    being debugged if it hasn't already been loaded
 228    (value_contents_writeable() is used when a writeable but fetched
 229    buffer is required)..  value_contents_raw() is used when data is
 230    being stored into the buffer, or when it is certain that the
 231    contents of the buffer are valid.
 232
 233    Note: The contents pointer is adjusted by the offset required to
 234    get to the real subobject, if the value happens to represent
 235    something embedded in a larger run-time object.  */
 236
 237 extern gdb_byte *value_contents_raw (struct value *);
 238
 239 /* Actual contents of the value.  For use of this value; setting it
 240    uses the stuff above.  Not valid if lazy is nonzero.  Target
 241    byte-order.  We force it to be aligned properly for any possible
 242    value.  Note that a value therefore extends beyond what is
 243    declared here.  */
 244
 245 extern const gdb_byte *value_contents (struct value *);
 246 extern gdb_byte *value_contents_writeable (struct value *);
 247
 248 /* The ALL variants of the above two macros do not adjust the returned
 249    pointer by the embedded_offset value.  */
 250
 251 extern gdb_byte *value_contents_all_raw (struct value *);
 252 extern const gdb_byte *value_contents_all (struct value *);
 253
 254 extern int value_fetch_lazy (struct value *val);
 255 extern int value_contents_equal (struct value *val1, struct value *val2);
 256
 257 /* If nonzero, this is the value of a variable which does not actually
 258    exist in the program.  */
 259 extern int value_optimized_out (struct value *value);
 260 extern void set_value_optimized_out (struct value *value, int val);
 261
 262 /* Set or return field indicating whether a variable is initialized or
 263    not, based on debugging information supplied by the compiler.
 264    1 = initialized; 0 = uninitialized.  */
 265 extern int value_initialized (struct value *);
 266 extern void set_value_initialized (struct value *, int);
 267
 268 /* Set COMPONENT's location as appropriate for a component of WHOLE
 269    --- regardless of what kind of lvalue WHOLE is.  */
 270 extern void set_value_component_location (struct value *component,
 271                                           struct value *whole);
 272
 273 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
 274    single value might have multiple LVALs), this hacked interface is
 275    limited to just the first PIECE.  Expect further change.  */
 276 /* Type of value; either not an lval, or one of the various different
 277    possible kinds of lval.  */
 278 extern enum lval_type *deprecated_value_lval_hack (struct value *);
 279 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
 280
 281 /* If lval == lval_memory, return the address in the inferior.  If
 282    lval == lval_register, return the byte offset into the registers
 283    structure.  Otherwise, return 0.  The returned address
 284    includes the offset, if any.  */
 285 extern CORE_ADDR value_address (struct value *);
 286
 287 /* Like value_address, except the result does not include value's
 288    offset.  */
 289 extern CORE_ADDR value_raw_address (struct value *);
 290
 291 /* Set the address of a value.  */
 292 extern void set_value_address (struct value *, CORE_ADDR);
 293
 294 /* Pointer to internal variable.  */
 295 extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
 296 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
 297
 298 /* Frame register value is relative to.  This will be described in the
 299    lval enum above as "lval_register".  */
 300 extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
 301 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
 302
 303 /* Register number if the value is from a register.  */
 304 extern short *deprecated_value_regnum_hack (struct value *);
 305 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
 306
 307 /* Convert a REF to the object referenced.  */
 308
 309 extern struct value *coerce_ref (struct value *value);
 310
 311 /* If ARG is an array, convert it to a pointer.
 312    If ARG is a function, convert it to a function pointer.
 313
 314    References are dereferenced.  */
 315
 316 extern struct value *coerce_array (struct value *value);
 317
 318 \f
 319
 320 #include "symtab.h"
 321 #include "gdbtypes.h"
 322 #include "expression.h"
 323
 324 struct frame_info;
 325 struct fn_field;
 326
 327 extern void print_address_demangle (struct gdbarch *, CORE_ADDR,
 328                                     struct ui_file *, int);
 329
 330 extern LONGEST value_as_long (struct value *val);
 331 extern DOUBLEST value_as_double (struct value *val);
 332 extern CORE_ADDR value_as_address (struct value *val);
 333
 334 extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr);
 335 extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
 336                                int *invp);
 337 extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
 338 LONGEST unpack_bits_as_long (struct type *field_type, const gdb_byte *valaddr,
 339                              int bitpos, int bitsize);
 340 extern LONGEST unpack_field_as_long (struct type *type,
 341                                      const gdb_byte *valaddr,
 342                                      int fieldno);
 343
 344 extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num);
 345
 346 extern struct value *value_from_longest (struct type *type, LONGEST num);
 347 extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
 348 extern struct value *value_from_double (struct type *type, DOUBLEST num);
 349 extern struct value *value_from_decfloat (struct type *type,
 350                                           const gdb_byte *decbytes);
 351
 352 extern struct value *value_at (struct type *type, CORE_ADDR addr);
 353 extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
 354
 355 extern struct value *value_from_contents_and_address (struct type *,
 356                                                       const gdb_byte *,
 357                                                       CORE_ADDR);
 358
 359 extern struct value *default_value_from_register (struct type *type,
 360                                                   int regnum,
 361                                                   struct frame_info *frame);
 362
 363 extern struct value *value_from_register (struct type *type, int regnum,
 364                                           struct frame_info *frame);
 365
 366 extern CORE_ADDR address_from_register (struct type *type, int regnum,
 367                                         struct frame_info *frame);
 368
 369 extern struct value *value_of_variable (struct symbol *var, struct block *b);
 370
 371 extern struct value *address_of_variable (struct symbol *var, struct block *b);
 372
 373 extern struct value *value_of_register (int regnum, struct frame_info *frame);
 374
 375 struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
 376
 377 extern int symbol_read_needs_frame (struct symbol *);
 378
 379 extern struct value *read_var_value (struct symbol *var,
 380                                      struct frame_info *frame);
 381
 382 extern struct value *allocate_value (struct type *type);
 383 extern struct value *allocate_value_lazy (struct type *type);
 384 extern void allocate_value_contents (struct value *value);
 385
 386 extern struct value *allocate_repeat_value (struct type *type, int count);
 387
 388 extern struct value *value_mark (void);
 389
 390 extern void value_free_to_mark (struct value *mark);
 391
 392 extern struct value *value_cstring (char *ptr, int len,
 393                                     struct type *char_type);
 394 extern struct value *value_string (char *ptr, int len,
 395                                    struct type *char_type);
 396 extern struct value *value_bitstring (char *ptr, int len,
 397                                       struct type *index_type);
 398
 399 extern struct value *value_array (int lowbound, int highbound,
 400                                   struct value **elemvec);
 401
 402 extern struct value *value_concat (struct value *arg1, struct value *arg2);
 403
 404 extern struct value *value_binop (struct value *arg1, struct value *arg2,
 405                                   enum exp_opcode op);
 406
 407 extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
 408
 409 extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
 410
 411 extern int value_must_coerce_to_target (struct value *arg1);
 412
 413 extern struct value *value_coerce_to_target (struct value *arg1);
 414
 415 extern struct value *value_coerce_array (struct value *arg1);
 416
 417 extern struct value *value_coerce_function (struct value *arg1);
 418
 419 extern struct value *value_ind (struct value *arg1);
 420
 421 extern struct value *value_addr (struct value *arg1);
 422
 423 extern struct value *value_ref (struct value *arg1);
 424
 425 extern struct value *value_assign (struct value *toval,
 426                                    struct value *fromval);
 427
 428 extern struct value *value_pos (struct value *arg1);
 429
 430 extern struct value *value_neg (struct value *arg1);
 431
 432 extern struct value *value_complement (struct value *arg1);
 433
 434 extern struct value *value_struct_elt (struct value **argp,
 435                                        struct value **args,
 436                                        char *name, int *static_memfuncp,
 437                                        char *err);
 438
 439 extern struct value *value_aggregate_elt (struct type *curtype,
 440                                           char *name,
 441                                           int want_address,
 442                                           enum noside noside);
 443
 444 extern struct value *value_static_field (struct type *type, int fieldno);
 445
 446 extern struct fn_field *value_find_oload_method_list (struct value **, char *,
 447                                                       int, int *,
 448                                                       struct type **, int *);
 449
 450 extern int find_overload_match (struct type **arg_types, int nargs,
 451                                 char *name, int method, int lax,
 452                                 struct value **objp, struct symbol *fsym,
 453                                 struct value **valp, struct symbol **symp,
 454                                 int *staticp);
 455
 456 extern struct value *value_field (struct value *arg1, int fieldno);
 457
 458 extern struct value *value_primitive_field (struct value *arg1, int offset,
 459                                             int fieldno,
 460                                             struct type *arg_type);
 461
 462
 463 extern struct type *value_rtti_target_type (struct value *, int *, int *,
 464                                             int *);
 465
 466 extern struct value *value_full_object (struct value *, struct type *, int,
 467                                         int, int);
 468
 469 extern struct value *value_cast_pointers (struct type *, struct value *);
 470
 471 extern struct value *value_cast (struct type *type, struct value *arg2);
 472
 473 extern struct value *value_zero (struct type *type, enum lval_type lv);
 474
 475 extern struct value *value_one (struct type *type, enum lval_type lv);
 476
 477 extern struct value *value_repeat (struct value *arg1, int count);
 478
 479 extern struct value *value_subscript (struct value *array, LONGEST index);
 480
 481 extern struct value *value_bitstring_subscript (struct type *type,
 482                                                 struct value *bitstring,
 483                                                 LONGEST index);
 484
 485 extern struct value *register_value_being_returned (struct type *valtype,
 486                                                     struct regcache *retbuf);
 487
 488 extern int value_in (struct value *element, struct value *set);
 489
 490 extern int value_bit_index (struct type *type, const gdb_byte *addr,
 491                             int index);
 492
 493 extern int using_struct_return (struct gdbarch *gdbarch,
 494                                 struct type *func_type,
 495                                 struct type *value_type);
 496
 497 extern struct value *evaluate_expression (struct expression *exp);
 498
 499 extern struct value *evaluate_type (struct expression *exp);
 500
 501 extern struct value *evaluate_subexp (struct type *expect_type,
 502                                       struct expression *exp,
 503                                       int *pos, enum noside noside);
 504
 505 extern struct value *evaluate_subexpression_type (struct expression *exp,
 506                                                   int subexp);
 507
 508 extern char *extract_field_op (struct expression *exp, int *subexp);
 509
 510 extern struct value *evaluate_subexp_with_coercion (struct expression *,
 511                                                     int *, enum noside);
 512
 513 extern struct value *parse_and_eval (char *exp);
 514
 515 extern struct value *parse_to_comma_and_eval (char **expp);
 516
 517 extern struct type *parse_and_eval_type (char *p, int length);
 518
 519 extern CORE_ADDR parse_and_eval_address (char *exp);
 520
 521 extern CORE_ADDR parse_and_eval_address_1 (char **expptr);
 522
 523 extern LONGEST parse_and_eval_long (char *exp);
 524
 525 extern void unop_promote (const struct language_defn *language,
 526                           struct gdbarch *gdbarch,
 527                           struct value **arg1);
 528
 529 extern void binop_promote (const struct language_defn *language,
 530                            struct gdbarch *gdbarch,
 531                            struct value **arg1, struct value **arg2);
 532
 533 extern struct value *access_value_history (int num);
 534
 535 extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
 536                                            struct internalvar *var);
 537
 538 extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
 539
 540 extern void set_internalvar (struct internalvar *var, struct value *val);
 541
 542 extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
 543
 544 extern void set_internalvar_string (struct internalvar *var,
 545                                     const char *string);
 546
 547 extern void clear_internalvar (struct internalvar *var);
 548
 549 extern void set_internalvar_component (struct internalvar *var,
 550                                        int offset,
 551                                        int bitpos, int bitsize,
 552                                        struct value *newvalue);
 553
 554 extern struct internalvar *lookup_only_internalvar (const char *name);
 555
 556 extern struct internalvar *create_internalvar (const char *name);
 557
 558 typedef struct value * (*internalvar_make_value) (struct gdbarch *,
 559                                                   struct internalvar *);
 560 extern struct internalvar *
 561   create_internalvar_type_lazy (char *name, internalvar_make_value fun);
 562
 563 extern struct internalvar *lookup_internalvar (const char *name);
 564
 565 extern int value_equal (struct value *arg1, struct value *arg2);
 566
 567 extern int value_less (struct value *arg1, struct value *arg2);
 568
 569 extern int value_logical_not (struct value *arg1);
 570
 571 /* C++ */
 572
 573 extern struct value *value_of_this (int complain);
 574
 575 extern struct value *value_x_binop (struct value *arg1, struct value *arg2,
 576                                     enum exp_opcode op,
 577                                     enum exp_opcode otherop,
 578                                     enum noside noside);
 579
 580 extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op,
 581                                    enum noside noside);
 582
 583 extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f,
 584                                      int j, struct type *type, int offset);
 585
 586 extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1,
 587                                  struct value *arg2);
 588
 589 extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1);
 590
 591 extern int destructor_name_p (const char *name, const struct type *type);
 592
 593 extern void value_incref (struct value *val);
 594
 595 extern void value_free (struct value *val);
 596
 597 extern void free_all_values (void);
 598
 599 extern void release_value (struct value *val);
 600
 601 extern int record_latest_value (struct value *val);
 602
 603 extern void modify_field (struct type *type, gdb_byte *addr,
 604                           LONGEST fieldval, int bitpos, int bitsize);
 605
 606 extern void type_print (struct type *type, char *varstring,
 607                         struct ui_file *stream, int show);
 608
 609 extern char *type_to_string (struct type *type);
 610
 611 extern gdb_byte *baseclass_addr (struct type *type, int index,
 612                                  gdb_byte *valaddr,
 613                                  struct value **valuep, int *errp);
 614
 615 extern void print_longest (struct ui_file *stream, int format,
 616                            int use_local, LONGEST val);
 617
 618 extern void print_floating (const gdb_byte *valaddr, struct type *type,
 619                             struct ui_file *stream);
 620
 621 extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
 622                                     struct ui_file *stream);
 623
 624 extern int value_print (struct value *val, struct ui_file *stream,
 625                         const struct value_print_options *options);
 626
 627 extern void value_print_array_elements (struct value *val,
 628                                         struct ui_file *stream, int format,
 629                                         enum val_prettyprint pretty);
 630
 631 extern struct value *value_release_to_mark (struct value *mark);
 632
 633 extern int val_print (struct type *type, const gdb_byte *valaddr,
 634                       int embedded_offset, CORE_ADDR address,
 635                       struct ui_file *stream, int recurse,
 636                       const struct value_print_options *options,
 637                       const struct language_defn *language);
 638
 639 extern int common_val_print (struct value *val,
 640                              struct ui_file *stream, int recurse,
 641                              const struct value_print_options *options,
 642                              const struct language_defn *language);
 643
 644 extern int val_print_string (struct type *elttype, CORE_ADDR addr, int len,
 645                              struct ui_file *stream,
 646                              const struct value_print_options *options);
 647
 648 extern void print_variable_and_value (const char *name,
 649                                       struct symbol *var,
 650                                       struct frame_info *frame,
 651                                       struct ui_file *stream,
 652                                       int indent);
 653
 654 extern int check_field (struct type *, const char *);
 655
 656 extern void typedef_print (struct type *type, struct symbol *news,
 657                            struct ui_file *stream);
 658
 659 extern char *internalvar_name (struct internalvar *var);
 660
 661 extern void preserve_values (struct objfile *);
 662
 663 /* From values.c */
 664
 665 extern struct value *value_copy (struct value *);
 666
 667 /* From valops.c */
 668
 669 extern struct value *varying_to_slice (struct value *);
 670
 671 extern struct value *value_slice (struct value *, int, int);
 672
 673 extern struct value *value_literal_complex (struct value *, struct value *,
 674                                             struct type *);
 675
 676 extern struct value *find_function_in_inferior (const char *,
 677                                                 struct objfile **);
 678
 679 extern struct value *value_allocate_space_in_inferior (int);
 680
 681 extern struct value *value_of_local (const char *name, int complain);
 682
 683 extern struct value *value_subscripted_rvalue (struct value *array,
 684                                                LONGEST index, int lowerbound);
 685
 686 /* User function handler.  */
 687
 688 typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
 689                                                const struct language_defn *language,
 690                                                void *cookie,
 691                                                int argc,
 692                                                struct value **argv);
 693
 694 void add_internal_function (const char *name, const char *doc,
 695                             internal_function_fn handler,
 696                             void *cookie);
 697
 698 struct value *call_internal_function (struct gdbarch *gdbarch,
 699                                       const struct language_defn *language,
 700                                       struct value *function,
 701                                       int argc, struct value **argv);
 702
 703 char *value_internal_function_name (struct value *);
 704
 705 #endif /* !defined (VALUE_H) */