1 /* Definitions for values of C expressions, for GDB.
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, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
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.
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.
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/>. */
22 #if !defined (VALUE_H)
26 #include "frame.h" /* For struct frame_id. */
35 struct value_print_options;
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
44 /* Values are stored in a chain, so that they can be deleted easily
45 over calls to the inferior. Values assigned to internal variables,
46 put into the value history or exposed to Python are taken off this
49 struct value *value_next (struct value *);
51 /* Type of the value. */
53 extern struct type *value_type (const struct value *);
55 /* This is being used to change the type of an existing value, that
56 code should instead be creating a new value with the changed type
57 (but possibly shared content). */
59 extern void deprecated_set_value_type (struct value *value,
62 /* Only used for bitfields; number of bits contained in them. */
64 extern int value_bitsize (const struct value *);
65 extern void set_value_bitsize (struct value *, int bit);
67 /* Only used for bitfields; position of start of field. For
68 gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
69 gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
71 extern int value_bitpos (const struct value *);
72 extern void set_value_bitpos (struct value *, int bit);
74 /* Only used for bitfields; the containing value. This allows a
75 single read from the target when displaying multiple
78 struct value *value_parent (struct value *);
80 /* Describes offset of a value within lval of a structure in bytes.
81 If lval == lval_memory, this is an offset to the address. If lval
82 == lval_register, this is a further offset from location.address
83 within the registers structure. Note also the member
84 embedded_offset below. */
86 extern int value_offset (const struct value *);
87 extern void set_value_offset (struct value *, int offset);
89 /* The comment from "struct value" reads: ``Is it modifiable? Only
90 relevant if lval != not_lval.''. Shouldn't the value instead be
91 not_lval and be done with it? */
93 extern int deprecated_value_modifiable (struct value *value);
94 extern void deprecated_set_value_modifiable (struct value *value,
97 /* If a value represents a C++ object, then the `type' field gives the
98 object's compile-time type. If the object actually belongs to some
99 class derived from `type', perhaps with other base classes and
100 additional members, then `type' is just a subobject of the real
101 thing, and the full object is probably larger than `type' would
104 If `type' is a dynamic class (i.e. one with a vtable), then GDB can
105 actually determine the object's run-time type by looking at the
106 run-time type information in the vtable. When this information is
107 available, we may elect to read in the entire object, for several
110 - When printing the value, the user would probably rather see the
111 full object, not just the limited portion apparent from the
114 - If `type' has virtual base classes, then even printing `type'
115 alone may require reaching outside the `type' portion of the
116 object to wherever the virtual base class has been stored.
118 When we store the entire object, `enclosing_type' is the run-time
119 type -- the complete object -- and `embedded_offset' is the offset
120 of `type' within that larger type, in bytes. The value_contents()
121 macro takes `embedded_offset' into account, so most GDB code
122 continues to see the `type' portion of the value, just as the
125 If `type' is a pointer to an object, then `enclosing_type' is a
126 pointer to the object's run-time type, and `pointed_to_offset' is
127 the offset in bytes from the full object to the pointed-to object
128 -- that is, the value `embedded_offset' would have if we followed
129 the pointer and fetched the complete object. (I don't really see
130 the point. Why not just determine the run-time type when you
131 indirect, and avoid the special case? The contents don't matter
132 until you indirect anyway.)
134 If we're not doing anything fancy, `enclosing_type' is equal to
135 `type', and `embedded_offset' is zero, so everything works
138 extern struct type *value_enclosing_type (struct value *);
139 extern void set_value_enclosing_type (struct value *val,
140 struct type *new_type);
142 extern int value_pointed_to_offset (struct value *value);
143 extern void set_value_pointed_to_offset (struct value *value, int val);
144 extern int value_embedded_offset (struct value *value);
145 extern void set_value_embedded_offset (struct value *value, int val);
147 /* For lval_computed values, this structure holds functions used to
148 retrieve and set the value (or portions of the value).
150 For each function, 'V' is the 'this' pointer: an lval_funcs
151 function F may always assume that the V it receives is an
152 lval_computed value, and has F in the appropriate slot of its
153 lval_funcs structure. */
157 /* Fill in VALUE's contents. This is used to "un-lazy" values. If
158 a problem arises in obtaining VALUE's bits, this function should
160 void (*read) (struct value *v);
162 /* Handle an assignment TOVAL = FROMVAL by writing the value of
163 FROMVAL to TOVAL's location. The contents of TOVAL have not yet
164 been updated. If a problem arises in doing so, this function
165 should call 'error'. */
166 void (*write) (struct value *toval, struct value *fromval);
168 /* Check the validity of some bits in VALUE. This should return 1
169 if all the bits starting at OFFSET and extending for LENGTH bits
170 are valid, or 0 if any bit is invalid. */
171 int (*check_validity) (const struct value *value, int offset, int length);
173 /* Return 1 if any bit in VALUE is valid, 0 if they are all invalid. */
174 int (*check_any_valid) (const struct value *value);
176 /* If non-NULL, this is used to implement pointer indirection for
177 this value. This method may return NULL, in which case value_ind
178 will fall back to ordinary indirection. */
179 struct value *(*indirect) (struct value *value);
181 /* If non-NULL, this is used to determine whether the indicated bits
182 of VALUE are a synthetic pointer. */
183 int (*check_synthetic_pointer) (const struct value *value,
184 int offset, int length);
186 /* Return a duplicate of VALUE's closure, for use in a new value.
187 This may simply return the same closure, if VALUE's is
188 reference-counted or statically allocated.
190 This may be NULL, in which case VALUE's closure is re-used in the
192 void *(*copy_closure) (const struct value *v);
194 /* Drop VALUE's reference to its closure. Maybe this frees the
195 closure; maybe this decrements a reference count; maybe the
196 closure is statically allocated and this does nothing.
198 This may be NULL, in which case no action is taken to free
200 void (*free_closure) (struct value *v);
203 /* Create a computed lvalue, with type TYPE, function pointers FUNCS,
204 and closure CLOSURE. */
206 extern struct value *allocate_computed_value (struct type *type,
207 struct lval_funcs *funcs,
210 /* If VALUE is lval_computed, return its lval_funcs structure. */
212 extern struct lval_funcs *value_computed_funcs (struct value *value);
214 /* If VALUE is lval_computed, return its closure. The meaning of the
215 returned value depends on the functions VALUE uses. */
217 extern void *value_computed_closure (const struct value *value);
219 /* If zero, contents of this value are in the contents field. If
220 nonzero, contents are in inferior. If the lval field is lval_memory,
221 the contents are in inferior memory at location.address plus offset.
222 The lval field may also be lval_register.
224 WARNING: This field is used by the code which handles watchpoints
225 (see breakpoint.c) to decide whether a particular value can be
226 watched by hardware watchpoints. If the lazy flag is set for some
227 member of a value chain, it is assumed that this member of the
228 chain doesn't need to be watched as part of watching the value
229 itself. This is how GDB avoids watching the entire struct or array
230 when the user wants to watch a single struct member or array
231 element. If you ever change the way lazy flag is set and reset, be
232 sure to consider this use as well! */
234 extern int value_lazy (struct value *);
235 extern void set_value_lazy (struct value *value, int val);
237 extern int value_stack (struct value *);
238 extern void set_value_stack (struct value *value, int val);
240 /* value_contents() and value_contents_raw() both return the address
241 of the gdb buffer used to hold a copy of the contents of the lval.
242 value_contents() is used when the contents of the buffer are needed
243 -- it uses value_fetch_lazy() to load the buffer from the process
244 being debugged if it hasn't already been loaded
245 (value_contents_writeable() is used when a writeable but fetched
246 buffer is required).. value_contents_raw() is used when data is
247 being stored into the buffer, or when it is certain that the
248 contents of the buffer are valid.
250 Note: The contents pointer is adjusted by the offset required to
251 get to the real subobject, if the value happens to represent
252 something embedded in a larger run-time object. */
254 extern gdb_byte *value_contents_raw (struct value *);
256 /* Actual contents of the value. For use of this value; setting it
257 uses the stuff above. Not valid if lazy is nonzero. Target
258 byte-order. We force it to be aligned properly for any possible
259 value. Note that a value therefore extends beyond what is
262 extern const gdb_byte *value_contents (struct value *);
263 extern gdb_byte *value_contents_writeable (struct value *);
265 /* The ALL variants of the above two macros do not adjust the returned
266 pointer by the embedded_offset value. */
268 extern gdb_byte *value_contents_all_raw (struct value *);
269 extern const gdb_byte *value_contents_all (struct value *);
271 /* Like value_contents_all, but does not require that the returned
272 bits be valid. This should only be used in situations where you
273 plan to check the validity manually. */
274 extern const gdb_byte *value_contents_for_printing (struct value *value);
276 /* Like value_contents_for_printing, but accepts a constant value
277 pointer. Unlike value_contents_for_printing however, the pointed
278 value must _not_ be lazy. */
279 extern const gdb_byte *
280 value_contents_for_printing_const (const struct value *value);
282 extern int value_fetch_lazy (struct value *val);
283 extern int value_contents_equal (struct value *val1, struct value *val2);
285 /* If nonzero, this is the value of a variable which does not actually
286 exist in the program. */
287 extern int value_optimized_out (struct value *value);
288 extern void set_value_optimized_out (struct value *value, int val);
290 /* Like value_optimized_out, but return false if any bit in the object
292 extern int value_entirely_optimized_out (const struct value *value);
294 /* Set or return field indicating whether a variable is initialized or
295 not, based on debugging information supplied by the compiler.
296 1 = initialized; 0 = uninitialized. */
297 extern int value_initialized (struct value *);
298 extern void set_value_initialized (struct value *, int);
300 /* Set COMPONENT's location as appropriate for a component of WHOLE
301 --- regardless of what kind of lvalue WHOLE is. */
302 extern void set_value_component_location (struct value *component,
303 const struct value *whole);
305 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
306 single value might have multiple LVALs), this hacked interface is
307 limited to just the first PIECE. Expect further change. */
308 /* Type of value; either not an lval, or one of the various different
309 possible kinds of lval. */
310 extern enum lval_type *deprecated_value_lval_hack (struct value *);
311 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
313 /* If lval == lval_memory, return the address in the inferior. If
314 lval == lval_register, return the byte offset into the registers
315 structure. Otherwise, return 0. The returned address
316 includes the offset, if any. */
317 extern CORE_ADDR value_address (const struct value *);
319 /* Like value_address, except the result does not include value's
321 extern CORE_ADDR value_raw_address (struct value *);
323 /* Set the address of a value. */
324 extern void set_value_address (struct value *, CORE_ADDR);
326 /* Pointer to internal variable. */
327 extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
328 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
330 /* Frame register value is relative to. This will be described in the
331 lval enum above as "lval_register". */
332 extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
333 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
335 /* Register number if the value is from a register. */
336 extern short *deprecated_value_regnum_hack (struct value *);
337 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
339 /* Convert a REF to the object referenced. */
341 extern struct value *coerce_ref (struct value *value);
343 /* If ARG is an array, convert it to a pointer.
344 If ARG is a function, convert it to a function pointer.
346 References are dereferenced. */
348 extern struct value *coerce_array (struct value *value);
350 /* Given a value, determine whether the bits starting at OFFSET and
351 extending for LENGTH bits are valid. This returns nonzero if all
352 bits in the given range are valid, zero if any bit is invalid. */
354 extern int value_bits_valid (const struct value *value,
355 int offset, int length);
357 /* Given a value, determine whether the bits starting at OFFSET and
358 extending for LENGTH bits are a synthetic pointer. */
360 extern int value_bits_synthetic_pointer (const struct value *value,
361 int offset, int length);
363 /* Given a value, determine whether the contents bytes starting at
364 OFFSET and extending for LENGTH bytes are available. This returns
365 nonzero if all bytes in the given range are available, zero if any
366 byte is unavailable. */
368 extern int value_bytes_available (const struct value *value,
369 int offset, int length);
371 /* Like value_bytes_available, but return false if any byte in the
372 whole object is unavailable. */
373 extern int value_entirely_available (struct value *value);
375 /* Mark VALUE's content bytes starting at OFFSET and extending for
376 LENGTH bytes as unavailable. */
378 extern void mark_value_bytes_unavailable (struct value *value,
379 int offset, int length);
381 /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
382 LENGTH bytes of VAL2's contents starting at OFFSET2. Returns true
383 iff the set of available contents match. Unavailable contents
384 compare equal with unavailable contents, and different with any
385 available byte. For example, if 'x's represent an unavailable
386 byte, and 'V' and 'Z' represent different available bytes, in a
387 value with length 16:
390 contents: xxxxVVVVxxxxVVZZ
394 value_available_contents_eq(val, 0, val, 8, 6) => 1
395 value_available_contents_eq(val, 0, val, 4, 4) => 1
396 value_available_contents_eq(val, 0, val, 8, 8) => 0
397 value_available_contents_eq(val, 4, val, 12, 2) => 1
398 value_available_contents_eq(val, 4, val, 12, 4) => 0
399 value_available_contents_eq(val, 3, val, 4, 4) => 0
402 extern int value_available_contents_eq (const struct value *val1, int offset1,
403 const struct value *val2, int offset2,
406 /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which
407 is (or will be copied to) VAL's contents buffer offset by
408 EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
409 Marks value contents ranges as unavailable if the corresponding
410 memory is likewise unavailable. STACK indicates whether the memory
411 is known to be stack memory. */
413 extern void read_value_memory (struct value *val, int offset,
414 int stack, CORE_ADDR memaddr,
415 gdb_byte *buffer, size_t length);
420 #include "gdbtypes.h"
421 #include "expression.h"
426 extern void print_address_demangle (struct gdbarch *, CORE_ADDR,
427 struct ui_file *, int);
429 extern LONGEST value_as_long (struct value *val);
430 extern DOUBLEST value_as_double (struct value *val);
431 extern CORE_ADDR value_as_address (struct value *val);
433 extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr);
434 extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
436 extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
438 extern int unpack_value_bits_as_long (struct type *field_type,
439 const gdb_byte *valaddr,
440 int embedded_offset, int bitpos,
442 const struct value *original_value,
445 extern LONGEST unpack_field_as_long (struct type *type,
446 const gdb_byte *valaddr,
448 extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr,
449 int embedded_offset, int fieldno,
450 const struct value *val, LONGEST *result);
452 extern struct value *value_field_bitfield (struct type *type, int fieldno,
453 const gdb_byte *valaddr,
455 const struct value *val);
457 extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num);
459 extern struct value *value_from_longest (struct type *type, LONGEST num);
460 extern struct value *value_from_ulongest (struct type *type, ULONGEST num);
461 extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
462 extern struct value *value_from_double (struct type *type, DOUBLEST num);
463 extern struct value *value_from_decfloat (struct type *type,
464 const gdb_byte *decbytes);
466 extern struct value *value_at (struct type *type, CORE_ADDR addr);
467 extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
469 extern struct value *value_from_contents_and_address (struct type *,
473 extern struct value *default_value_from_register (struct type *type,
475 struct frame_info *frame);
477 extern struct value *value_from_register (struct type *type, int regnum,
478 struct frame_info *frame);
480 extern CORE_ADDR address_from_register (struct type *type, int regnum,
481 struct frame_info *frame);
483 extern struct value *value_of_variable (struct symbol *var, struct block *b);
485 extern struct value *address_of_variable (struct symbol *var, struct block *b);
487 extern struct value *value_of_register (int regnum, struct frame_info *frame);
489 struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
491 extern int symbol_read_needs_frame (struct symbol *);
493 extern struct value *read_var_value (struct symbol *var,
494 struct frame_info *frame);
496 extern struct value *allocate_value (struct type *type);
497 extern struct value *allocate_value_lazy (struct type *type);
498 extern void allocate_value_contents (struct value *value);
499 extern void value_contents_copy (struct value *dst, int dst_offset,
500 struct value *src, int src_offset,
502 extern void value_contents_copy_raw (struct value *dst, int dst_offset,
503 struct value *src, int src_offset,
506 extern struct value *allocate_repeat_value (struct type *type, int count);
508 extern struct value *value_mark (void);
510 extern void value_free_to_mark (struct value *mark);
512 extern struct value *value_cstring (char *ptr, int len,
513 struct type *char_type);
514 extern struct value *value_string (char *ptr, int len,
515 struct type *char_type);
516 extern struct value *value_bitstring (char *ptr, int len,
517 struct type *index_type);
519 extern struct value *value_array (int lowbound, int highbound,
520 struct value **elemvec);
522 extern struct value *value_concat (struct value *arg1, struct value *arg2);
524 extern struct value *value_binop (struct value *arg1, struct value *arg2,
527 extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
529 extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
531 extern int value_must_coerce_to_target (struct value *arg1);
533 extern struct value *value_coerce_to_target (struct value *arg1);
535 extern struct value *value_coerce_array (struct value *arg1);
537 extern struct value *value_coerce_function (struct value *arg1);
539 extern struct value *value_ind (struct value *arg1);
541 extern struct value *value_addr (struct value *arg1);
543 extern struct value *value_ref (struct value *arg1);
545 extern struct value *value_assign (struct value *toval,
546 struct value *fromval);
548 extern struct value *value_pos (struct value *arg1);
550 extern struct value *value_neg (struct value *arg1);
552 extern struct value *value_complement (struct value *arg1);
554 extern struct value *value_struct_elt (struct value **argp,
556 const char *name, int *static_memfuncp,
559 extern struct value *value_aggregate_elt (struct type *curtype,
561 struct type *expect_type,
565 extern struct value *value_static_field (struct type *type, int fieldno);
567 extern struct fn_field *value_find_oload_method_list (struct value **,
570 struct type **, int *);
572 enum oload_search_type { NON_METHOD, METHOD, BOTH };
574 extern int find_overload_match (struct type **arg_types, int nargs,
576 enum oload_search_type method, int lax,
577 struct value **objp, struct symbol *fsym,
578 struct value **valp, struct symbol **symp,
579 int *staticp, const int no_adl);
581 extern struct value *value_field (struct value *arg1, int fieldno);
583 extern struct value *value_primitive_field (struct value *arg1, int offset,
585 struct type *arg_type);
588 extern struct type *value_rtti_target_type (struct value *, int *, int *,
591 extern struct value *value_full_object (struct value *, struct type *, int,
594 extern struct value *value_cast_pointers (struct type *, struct value *);
596 extern struct value *value_cast (struct type *type, struct value *arg2);
598 extern struct value *value_reinterpret_cast (struct type *type,
601 extern struct value *value_dynamic_cast (struct type *type, struct value *arg);
603 extern struct value *value_zero (struct type *type, enum lval_type lv);
605 extern struct value *value_one (struct type *type, enum lval_type lv);
607 extern struct value *value_repeat (struct value *arg1, int count);
609 extern struct value *value_subscript (struct value *array, LONGEST index);
611 extern struct value *value_bitstring_subscript (struct type *type,
612 struct value *bitstring,
615 extern struct value *register_value_being_returned (struct type *valtype,
616 struct regcache *retbuf);
618 extern int value_in (struct value *element, struct value *set);
620 extern int value_bit_index (struct type *type, const gdb_byte *addr,
623 extern int using_struct_return (struct gdbarch *gdbarch,
624 struct type *func_type,
625 struct type *value_type);
627 extern struct value *evaluate_expression (struct expression *exp);
629 extern struct value *evaluate_type (struct expression *exp);
631 extern struct value *evaluate_subexp (struct type *expect_type,
632 struct expression *exp,
633 int *pos, enum noside noside);
635 extern struct value *evaluate_subexpression_type (struct expression *exp,
638 extern void fetch_subexp_value (struct expression *exp, int *pc,
639 struct value **valp, struct value **resultp,
640 struct value **val_chain);
642 extern char *extract_field_op (struct expression *exp, int *subexp);
644 extern struct value *evaluate_subexp_with_coercion (struct expression *,
647 extern struct value *parse_and_eval (char *exp);
649 extern struct value *parse_to_comma_and_eval (char **expp);
651 extern struct type *parse_and_eval_type (char *p, int length);
653 extern CORE_ADDR parse_and_eval_address (char *exp);
655 extern CORE_ADDR parse_and_eval_address_1 (char **expptr);
657 extern LONGEST parse_and_eval_long (char *exp);
659 extern void unop_promote (const struct language_defn *language,
660 struct gdbarch *gdbarch,
661 struct value **arg1);
663 extern void binop_promote (const struct language_defn *language,
664 struct gdbarch *gdbarch,
665 struct value **arg1, struct value **arg2);
667 extern struct value *access_value_history (int num);
669 extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
670 struct internalvar *var);
672 extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
674 extern void set_internalvar (struct internalvar *var, struct value *val);
676 extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
678 extern void set_internalvar_string (struct internalvar *var,
681 extern void clear_internalvar (struct internalvar *var);
683 extern void set_internalvar_component (struct internalvar *var,
685 int bitpos, int bitsize,
686 struct value *newvalue);
688 extern struct internalvar *lookup_only_internalvar (const char *name);
690 extern struct internalvar *create_internalvar (const char *name);
692 typedef struct value * (*internalvar_make_value) (struct gdbarch *,
693 struct internalvar *);
694 extern struct internalvar *
695 create_internalvar_type_lazy (char *name, internalvar_make_value fun);
697 extern struct internalvar *lookup_internalvar (const char *name);
699 extern int value_equal (struct value *arg1, struct value *arg2);
701 extern int value_equal_contents (struct value *arg1, struct value *arg2);
703 extern int value_less (struct value *arg1, struct value *arg2);
705 extern int value_logical_not (struct value *arg1);
709 extern struct value *value_of_this (int complain);
711 extern struct value *value_x_binop (struct value *arg1, struct value *arg2,
713 enum exp_opcode otherop,
716 extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op,
719 extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f,
720 int j, struct type *type, int offset);
722 extern int binop_types_user_defined_p (enum exp_opcode op,
726 extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1,
729 extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1);
731 extern int destructor_name_p (const char *name, const struct type *type);
733 extern void value_incref (struct value *val);
735 extern void value_free (struct value *val);
737 extern void free_all_values (void);
739 extern void free_value_chain (struct value *v);
741 extern void release_value (struct value *val);
743 extern int record_latest_value (struct value *val);
745 extern void modify_field (struct type *type, gdb_byte *addr,
746 LONGEST fieldval, int bitpos, int bitsize);
748 extern void type_print (struct type *type, char *varstring,
749 struct ui_file *stream, int show);
751 extern char *type_to_string (struct type *type);
753 extern gdb_byte *baseclass_addr (struct type *type, int index,
755 struct value **valuep, int *errp);
757 extern void print_longest (struct ui_file *stream, int format,
758 int use_local, LONGEST val);
760 extern void print_floating (const gdb_byte *valaddr, struct type *type,
761 struct ui_file *stream);
763 extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
764 struct ui_file *stream);
766 extern int value_print (struct value *val, struct ui_file *stream,
767 const struct value_print_options *options);
769 extern void value_print_array_elements (struct value *val,
770 struct ui_file *stream, int format,
771 enum val_prettyprint pretty);
773 extern struct value *value_release_to_mark (struct value *mark);
775 extern int val_print (struct type *type, const gdb_byte *valaddr,
776 int embedded_offset, CORE_ADDR address,
777 struct ui_file *stream, int recurse,
778 const struct value *val,
779 const struct value_print_options *options,
780 const struct language_defn *language);
782 extern int common_val_print (struct value *val,
783 struct ui_file *stream, int recurse,
784 const struct value_print_options *options,
785 const struct language_defn *language);
787 extern int val_print_string (struct type *elttype, const char *encoding,
788 CORE_ADDR addr, int len,
789 struct ui_file *stream,
790 const struct value_print_options *options);
792 extern void print_variable_and_value (const char *name,
794 struct frame_info *frame,
795 struct ui_file *stream,
798 extern int check_field (struct type *, const char *);
800 extern void typedef_print (struct type *type, struct symbol *news,
801 struct ui_file *stream);
803 extern char *internalvar_name (struct internalvar *var);
805 extern void preserve_values (struct objfile *);
809 extern struct value *value_copy (struct value *);
811 extern struct value *value_non_lval (struct value *);
813 extern void preserve_one_value (struct value *, struct objfile *, htab_t);
817 extern struct value *varying_to_slice (struct value *);
819 extern struct value *value_slice (struct value *, int, int);
821 extern struct value *value_literal_complex (struct value *, struct value *,
824 extern struct value *find_function_in_inferior (const char *,
827 extern struct value *value_allocate_space_in_inferior (int);
829 extern struct value *value_of_local (const char *name, int complain);
831 extern struct value *value_subscripted_rvalue (struct value *array,
832 LONGEST index, int lowerbound);
834 /* User function handler. */
836 typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
837 const struct language_defn *language,
840 struct value **argv);
842 void add_internal_function (const char *name, const char *doc,
843 internal_function_fn handler,
846 struct value *call_internal_function (struct gdbarch *gdbarch,
847 const struct language_defn *language,
848 struct value *function,
849 int argc, struct value **argv);
851 char *value_internal_function_name (struct value *);
853 #endif /* !defined (VALUE_H) */