1 /* Definitions for values of C expressions, for GDB.
3 Copyright (C) 1986-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #if !defined (VALUE_H)
24 #include "frame.h" /* For struct frame_id. */
33 struct value_print_options;
35 /* The structure which defines the type of a value. It should never
36 be possible for a program lval value to survive over a call to the
37 inferior (i.e. to be put into the history list or an internal
42 /* Values are stored in a chain, so that they can be deleted easily
43 over calls to the inferior. Values assigned to internal variables,
44 put into the value history or exposed to Python are taken off this
47 struct value *value_next (struct value *);
49 /* Type of the value. */
51 extern struct type *value_type (const struct value *);
53 /* This is being used to change the type of an existing value, that
54 code should instead be creating a new value with the changed type
55 (but possibly shared content). */
57 extern void deprecated_set_value_type (struct value *value,
60 /* Only used for bitfields; number of bits contained in them. */
62 extern int value_bitsize (const struct value *);
63 extern void set_value_bitsize (struct value *, int bit);
65 /* Only used for bitfields; position of start of field. For
66 gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
67 gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
69 extern int value_bitpos (const struct value *);
70 extern void set_value_bitpos (struct value *, int bit);
72 /* Only used for bitfields; the containing value. This allows a
73 single read from the target when displaying multiple
76 struct value *value_parent (struct value *);
77 extern void set_value_parent (struct value *value, struct value *parent);
79 /* Describes offset of a value within lval of a structure in bytes.
80 If lval == lval_memory, this is an offset to the address. If lval
81 == lval_register, this is a further offset from location.address
82 within the registers structure. Note also the member
83 embedded_offset below. */
85 extern int value_offset (const struct value *);
86 extern void set_value_offset (struct value *, int offset);
88 /* The comment from "struct value" reads: ``Is it modifiable? Only
89 relevant if lval != not_lval.''. Shouldn't the value instead be
90 not_lval and be done with it? */
92 extern int deprecated_value_modifiable (struct value *value);
93 extern void deprecated_set_value_modifiable (struct value *value,
96 /* If a value represents a C++ object, then the `type' field gives the
97 object's compile-time type. If the object actually belongs to some
98 class derived from `type', perhaps with other base classes and
99 additional members, then `type' is just a subobject of the real
100 thing, and the full object is probably larger than `type' would
103 If `type' is a dynamic class (i.e. one with a vtable), then GDB can
104 actually determine the object's run-time type by looking at the
105 run-time type information in the vtable. When this information is
106 available, we may elect to read in the entire object, for several
109 - When printing the value, the user would probably rather see the
110 full object, not just the limited portion apparent from the
113 - If `type' has virtual base classes, then even printing `type'
114 alone may require reaching outside the `type' portion of the
115 object to wherever the virtual base class has been stored.
117 When we store the entire object, `enclosing_type' is the run-time
118 type -- the complete object -- and `embedded_offset' is the offset
119 of `type' within that larger type, in bytes. The value_contents()
120 macro takes `embedded_offset' into account, so most GDB code
121 continues to see the `type' portion of the value, just as the
124 If `type' is a pointer to an object, then `enclosing_type' is a
125 pointer to the object's run-time type, and `pointed_to_offset' is
126 the offset in bytes from the full object to the pointed-to object
127 -- that is, the value `embedded_offset' would have if we followed
128 the pointer and fetched the complete object. (I don't really see
129 the point. Why not just determine the run-time type when you
130 indirect, and avoid the special case? The contents don't matter
131 until you indirect anyway.)
133 If we're not doing anything fancy, `enclosing_type' is equal to
134 `type', and `embedded_offset' is zero, so everything works
137 extern struct type *value_enclosing_type (struct value *);
138 extern void set_value_enclosing_type (struct value *val,
139 struct type *new_type);
141 extern int value_pointed_to_offset (struct value *value);
142 extern void set_value_pointed_to_offset (struct value *value, int val);
143 extern int value_embedded_offset (struct value *value);
144 extern void set_value_embedded_offset (struct value *value, int val);
146 /* For lval_computed values, this structure holds functions used to
147 retrieve and set the value (or portions of the value).
149 For each function, 'V' is the 'this' pointer: an lval_funcs
150 function F may always assume that the V it receives is an
151 lval_computed value, and has F in the appropriate slot of its
152 lval_funcs structure. */
156 /* Fill in VALUE's contents. This is used to "un-lazy" values. If
157 a problem arises in obtaining VALUE's bits, this function should
158 call 'error'. If it is NULL value_fetch_lazy on "un-lazy"
159 non-optimized-out value is an internal error. */
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'. If it is NULL such TOVAL assignment is an error as
166 TOVAL is not considered as an lvalue. */
167 void (*write) (struct value *toval, struct value *fromval);
169 /* Check the validity of some bits in VALUE. This should return 1
170 if all the bits starting at OFFSET and extending for LENGTH bits
171 are valid, or 0 if any bit is invalid. */
172 int (*check_validity) (const struct value *value, int offset, int length);
174 /* Return 1 if any bit in VALUE is valid, 0 if they are all invalid. */
175 int (*check_any_valid) (const struct value *value);
177 /* If non-NULL, this is used to implement pointer indirection for
178 this value. This method may return NULL, in which case value_ind
179 will fall back to ordinary indirection. */
180 struct value *(*indirect) (struct value *value);
182 /* If non-NULL, this is used to implement reference resolving for
183 this value. This method may return NULL, in which case coerce_ref
184 will fall back to ordinary references resolving. */
185 struct value *(*coerce_ref) (const struct value *value);
187 /* If non-NULL, this is used to determine whether the indicated bits
188 of VALUE are a synthetic pointer. */
189 int (*check_synthetic_pointer) (const struct value *value,
190 int offset, int length);
192 /* Return a duplicate of VALUE's closure, for use in a new value.
193 This may simply return the same closure, if VALUE's is
194 reference-counted or statically allocated.
196 This may be NULL, in which case VALUE's closure is re-used in the
198 void *(*copy_closure) (const struct value *v);
200 /* Drop VALUE's reference to its closure. Maybe this frees the
201 closure; maybe this decrements a reference count; maybe the
202 closure is statically allocated and this does nothing.
204 This may be NULL, in which case no action is taken to free
206 void (*free_closure) (struct value *v);
209 /* Create a computed lvalue, with type TYPE, function pointers FUNCS,
210 and closure CLOSURE. */
212 extern struct value *allocate_computed_value (struct type *type,
213 const struct lval_funcs *funcs,
216 extern struct value *allocate_optimized_out_value (struct type *type);
218 /* If VALUE is lval_computed, return its lval_funcs structure. */
220 extern const struct lval_funcs *value_computed_funcs (const struct value *);
222 /* If VALUE is lval_computed, return its closure. The meaning of the
223 returned value depends on the functions VALUE uses. */
225 extern void *value_computed_closure (const struct value *value);
227 /* If zero, contents of this value are in the contents field. If
228 nonzero, contents are in inferior. If the lval field is lval_memory,
229 the contents are in inferior memory at location.address plus offset.
230 The lval field may also be lval_register.
232 WARNING: This field is used by the code which handles watchpoints
233 (see breakpoint.c) to decide whether a particular value can be
234 watched by hardware watchpoints. If the lazy flag is set for some
235 member of a value chain, it is assumed that this member of the
236 chain doesn't need to be watched as part of watching the value
237 itself. This is how GDB avoids watching the entire struct or array
238 when the user wants to watch a single struct member or array
239 element. If you ever change the way lazy flag is set and reset, be
240 sure to consider this use as well! */
242 extern int value_lazy (struct value *);
243 extern void set_value_lazy (struct value *value, int val);
245 extern int value_stack (struct value *);
246 extern void set_value_stack (struct value *value, int val);
248 /* value_contents() and value_contents_raw() both return the address
249 of the gdb buffer used to hold a copy of the contents of the lval.
250 value_contents() is used when the contents of the buffer are needed
251 -- it uses value_fetch_lazy() to load the buffer from the process
252 being debugged if it hasn't already been loaded
253 (value_contents_writeable() is used when a writeable but fetched
254 buffer is required).. value_contents_raw() is used when data is
255 being stored into the buffer, or when it is certain that the
256 contents of the buffer are valid.
258 Note: The contents pointer is adjusted by the offset required to
259 get to the real subobject, if the value happens to represent
260 something embedded in a larger run-time object. */
262 extern gdb_byte *value_contents_raw (struct value *);
264 /* Actual contents of the value. For use of this value; setting it
265 uses the stuff above. Not valid if lazy is nonzero. Target
266 byte-order. We force it to be aligned properly for any possible
267 value. Note that a value therefore extends beyond what is
270 extern const gdb_byte *value_contents (struct value *);
271 extern gdb_byte *value_contents_writeable (struct value *);
273 /* The ALL variants of the above two macros do not adjust the returned
274 pointer by the embedded_offset value. */
276 extern gdb_byte *value_contents_all_raw (struct value *);
277 extern const gdb_byte *value_contents_all (struct value *);
279 /* Like value_contents_all, but does not require that the returned
280 bits be valid. This should only be used in situations where you
281 plan to check the validity manually. */
282 extern const gdb_byte *value_contents_for_printing (struct value *value);
284 /* Like value_contents_for_printing, but accepts a constant value
285 pointer. Unlike value_contents_for_printing however, the pointed
286 value must _not_ be lazy. */
287 extern const gdb_byte *
288 value_contents_for_printing_const (const struct value *value);
290 extern int value_fetch_lazy (struct value *val);
291 extern int value_contents_equal (struct value *val1, struct value *val2);
293 /* If nonzero, this is the value of a variable which does not actually
294 exist in the program. */
295 extern int value_optimized_out (struct value *value);
296 extern void set_value_optimized_out (struct value *value, int val);
298 /* Like value_optimized_out, but return false if any bit in the object
300 extern int value_entirely_optimized_out (const struct value *value);
302 /* Set or return field indicating whether a variable is initialized or
303 not, based on debugging information supplied by the compiler.
304 1 = initialized; 0 = uninitialized. */
305 extern int value_initialized (struct value *);
306 extern void set_value_initialized (struct value *, int);
308 /* Set COMPONENT's location as appropriate for a component of WHOLE
309 --- regardless of what kind of lvalue WHOLE is. */
310 extern void set_value_component_location (struct value *component,
311 const struct value *whole);
313 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
314 single value might have multiple LVALs), this hacked interface is
315 limited to just the first PIECE. Expect further change. */
316 /* Type of value; either not an lval, or one of the various different
317 possible kinds of lval. */
318 extern enum lval_type *deprecated_value_lval_hack (struct value *);
319 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
321 /* Like VALUE_LVAL, except the parameter can be const. */
322 extern enum lval_type value_lval_const (const struct value *value);
324 /* If lval == lval_memory, return the address in the inferior. If
325 lval == lval_register, return the byte offset into the registers
326 structure. Otherwise, return 0. The returned address
327 includes the offset, if any. */
328 extern CORE_ADDR value_address (const struct value *);
330 /* Like value_address, except the result does not include value's
332 extern CORE_ADDR value_raw_address (struct value *);
334 /* Set the address of a value. */
335 extern void set_value_address (struct value *, CORE_ADDR);
337 /* Pointer to internal variable. */
338 extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
339 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
341 /* Frame register value is relative to. This will be described in the
342 lval enum above as "lval_register". */
343 extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
344 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
346 /* Register number if the value is from a register. */
347 extern short *deprecated_value_regnum_hack (struct value *);
348 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
350 /* Return value after lval_funcs->coerce_ref (after check_typedef). Return
351 NULL if lval_funcs->coerce_ref is not applicable for whatever reason. */
353 extern struct value *coerce_ref_if_computed (const struct value *arg);
355 /* Setup a new value type and enclosing value type for dereferenced value VALUE.
356 ENC_TYPE is the new enclosing type that should be set. ORIGINAL_TYPE and
357 ORIGINAL_VAL are the type and value of the original reference or pointer.
359 Note, that VALUE is modified by this function.
361 It is a common implementation for coerce_ref and value_ind. */
363 extern struct value * readjust_indirect_value_type (struct value *value,
364 struct type *enc_type,
365 struct type *original_type,
366 struct value *original_val);
368 /* Convert a REF to the object referenced. */
370 extern struct value *coerce_ref (struct value *value);
372 /* If ARG is an array, convert it to a pointer.
373 If ARG is a function, convert it to a function pointer.
375 References are dereferenced. */
377 extern struct value *coerce_array (struct value *value);
379 /* Given a value, determine whether the bits starting at OFFSET and
380 extending for LENGTH bits are valid. This returns nonzero if all
381 bits in the given range are valid, zero if any bit is invalid. */
383 extern int value_bits_valid (const struct value *value,
384 int offset, int length);
386 /* Given a value, determine whether the bits starting at OFFSET and
387 extending for LENGTH bits are a synthetic pointer. */
389 extern int value_bits_synthetic_pointer (const struct value *value,
390 int offset, int length);
392 /* Given a value, determine whether the contents bytes starting at
393 OFFSET and extending for LENGTH bytes are available. This returns
394 nonzero if all bytes in the given range are available, zero if any
395 byte is unavailable. */
397 extern int value_bytes_available (const struct value *value,
398 int offset, int length);
400 /* Like value_bytes_available, but return false if any byte in the
401 whole object is unavailable. */
402 extern int value_entirely_available (struct value *value);
404 /* Mark VALUE's content bytes starting at OFFSET and extending for
405 LENGTH bytes as unavailable. */
407 extern void mark_value_bytes_unavailable (struct value *value,
408 int offset, int length);
410 /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
411 LENGTH bytes of VAL2's contents starting at OFFSET2.
413 Note that "contents" refers to the whole value's contents
414 (value_contents_all), without any embedded offset adjustment. For
415 example, to compare a complete object value with itself, including
416 its enclosing type chunk, you'd do:
418 int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
419 value_available_contents (val, 0, val, 0, len);
421 Returns true iff the set of available contents match. Unavailable
422 contents compare equal with unavailable contents, and different
423 with any available byte. For example, if 'x's represent an
424 unavailable byte, and 'V' and 'Z' represent different available
425 bytes, in a value with length 16:
428 contents: xxxxVVVVxxxxVVZZ
432 value_available_contents_eq(val, 0, val, 8, 6) => 1
433 value_available_contents_eq(val, 0, val, 4, 4) => 1
434 value_available_contents_eq(val, 0, val, 8, 8) => 0
435 value_available_contents_eq(val, 4, val, 12, 2) => 1
436 value_available_contents_eq(val, 4, val, 12, 4) => 0
437 value_available_contents_eq(val, 3, val, 4, 4) => 0
440 extern int value_available_contents_eq (const struct value *val1, int offset1,
441 const struct value *val2, int offset2,
444 /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which
445 is (or will be copied to) VAL's contents buffer offset by
446 EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
447 Marks value contents ranges as unavailable if the corresponding
448 memory is likewise unavailable. STACK indicates whether the memory
449 is known to be stack memory. */
451 extern void read_value_memory (struct value *val, int embedded_offset,
452 int stack, CORE_ADDR memaddr,
453 gdb_byte *buffer, size_t length);
458 #include "gdbtypes.h"
459 #include "expression.h"
464 extern void print_address_demangle (struct gdbarch *, CORE_ADDR,
465 struct ui_file *, int);
467 extern LONGEST value_as_long (struct value *val);
468 extern DOUBLEST value_as_double (struct value *val);
469 extern CORE_ADDR value_as_address (struct value *val);
471 extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr);
472 extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
474 extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
476 extern int unpack_value_bits_as_long (struct type *field_type,
477 const gdb_byte *valaddr,
478 int embedded_offset, int bitpos,
480 const struct value *original_value,
483 extern LONGEST unpack_field_as_long (struct type *type,
484 const gdb_byte *valaddr,
486 extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr,
487 int embedded_offset, int fieldno,
488 const struct value *val, LONGEST *result);
490 extern struct value *value_field_bitfield (struct type *type, int fieldno,
491 const gdb_byte *valaddr,
493 const struct value *val);
495 extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num);
497 extern struct value *value_from_longest (struct type *type, LONGEST num);
498 extern struct value *value_from_ulongest (struct type *type, ULONGEST num);
499 extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
500 extern struct value *value_from_double (struct type *type, DOUBLEST num);
501 extern struct value *value_from_decfloat (struct type *type,
502 const gdb_byte *decbytes);
503 extern struct value *value_from_history_ref (char *, char **);
505 extern struct value *value_at (struct type *type, CORE_ADDR addr);
506 extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
508 extern struct value *value_from_contents_and_address (struct type *,
511 extern struct value *value_from_contents (struct type *, const gdb_byte *);
513 extern struct value *default_value_from_register (struct type *type,
515 struct frame_info *frame);
517 extern void read_frame_register_value (struct value *value,
518 struct frame_info *frame);
520 extern struct value *value_from_register (struct type *type, int regnum,
521 struct frame_info *frame);
523 extern CORE_ADDR address_from_register (struct type *type, int regnum,
524 struct frame_info *frame);
526 extern struct value *value_of_variable (struct symbol *var,
527 const struct block *b);
529 extern struct value *address_of_variable (struct symbol *var, struct block *b);
531 extern struct value *value_of_register (int regnum, struct frame_info *frame);
533 struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
535 extern int symbol_read_needs_frame (struct symbol *);
537 extern struct value *read_var_value (struct symbol *var,
538 struct frame_info *frame);
540 extern struct value *default_read_var_value (struct symbol *var,
541 struct frame_info *frame);
543 extern struct value *allocate_value (struct type *type);
544 extern struct value *allocate_value_lazy (struct type *type);
545 extern void allocate_value_contents (struct value *value);
546 extern void value_contents_copy (struct value *dst, int dst_offset,
547 struct value *src, int src_offset,
549 extern void value_contents_copy_raw (struct value *dst, int dst_offset,
550 struct value *src, int src_offset,
553 extern struct value *allocate_repeat_value (struct type *type, int count);
555 extern struct value *value_mark (void);
557 extern void value_free_to_mark (struct value *mark);
559 extern struct value *value_cstring (char *ptr, int len,
560 struct type *char_type);
561 extern struct value *value_string (char *ptr, int len,
562 struct type *char_type);
563 extern struct value *value_bitstring (char *ptr, int len,
564 struct type *index_type);
566 extern struct value *value_array (int lowbound, int highbound,
567 struct value **elemvec);
569 extern struct value *value_concat (struct value *arg1, struct value *arg2);
571 extern struct value *value_binop (struct value *arg1, struct value *arg2,
574 extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
576 extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
578 extern int value_must_coerce_to_target (struct value *arg1);
580 extern struct value *value_coerce_to_target (struct value *arg1);
582 extern struct value *value_coerce_array (struct value *arg1);
584 extern struct value *value_coerce_function (struct value *arg1);
586 extern struct value *value_ind (struct value *arg1);
588 extern struct value *value_addr (struct value *arg1);
590 extern struct value *value_ref (struct value *arg1);
592 extern struct value *value_assign (struct value *toval,
593 struct value *fromval);
595 extern struct value *value_pos (struct value *arg1);
597 extern struct value *value_neg (struct value *arg1);
599 extern struct value *value_complement (struct value *arg1);
601 extern struct value *value_struct_elt (struct value **argp,
603 const char *name, int *static_memfuncp,
606 extern struct value *value_aggregate_elt (struct type *curtype,
608 struct type *expect_type,
612 extern struct value *value_static_field (struct type *type, int fieldno);
614 extern struct fn_field *value_find_oload_method_list (struct value **,
617 struct type **, int *);
619 enum oload_search_type { NON_METHOD, METHOD, BOTH };
621 extern int find_overload_match (struct value **args, int nargs,
623 enum oload_search_type method, int lax,
624 struct value **objp, struct symbol *fsym,
625 struct value **valp, struct symbol **symp,
626 int *staticp, const int no_adl);
628 extern struct value *value_field (struct value *arg1, int fieldno);
630 extern struct value *value_primitive_field (struct value *arg1, int offset,
632 struct type *arg_type);
635 extern struct type *value_rtti_indirect_type (struct value *, int *, int *,
638 extern struct value *value_full_object (struct value *, struct type *, int,
641 extern struct value *value_cast_pointers (struct type *, struct value *);
643 extern struct value *value_cast (struct type *type, struct value *arg2);
645 extern struct value *value_reinterpret_cast (struct type *type,
648 extern struct value *value_dynamic_cast (struct type *type, struct value *arg);
650 extern struct value *value_zero (struct type *type, enum lval_type lv);
652 extern struct value *value_one (struct type *type);
654 extern struct value *value_repeat (struct value *arg1, int count);
656 extern struct value *value_subscript (struct value *array, LONGEST index);
658 extern struct value *value_bitstring_subscript (struct type *type,
659 struct value *bitstring,
662 extern struct value *register_value_being_returned (struct type *valtype,
663 struct regcache *retbuf);
665 extern int value_in (struct value *element, struct value *set);
667 extern int value_bit_index (struct type *type, const gdb_byte *addr,
670 extern int using_struct_return (struct gdbarch *gdbarch,
671 struct type *func_type,
672 struct type *value_type);
674 extern struct value *evaluate_expression (struct expression *exp);
676 extern struct value *evaluate_type (struct expression *exp);
678 extern struct value *evaluate_subexp (struct type *expect_type,
679 struct expression *exp,
680 int *pos, enum noside noside);
682 extern struct value *evaluate_subexpression_type (struct expression *exp,
685 extern void fetch_subexp_value (struct expression *exp, int *pc,
686 struct value **valp, struct value **resultp,
687 struct value **val_chain);
689 extern char *extract_field_op (struct expression *exp, int *subexp);
691 extern struct value *evaluate_subexp_with_coercion (struct expression *,
694 extern struct value *parse_and_eval (char *exp);
696 extern struct value *parse_to_comma_and_eval (char **expp);
698 extern struct type *parse_and_eval_type (char *p, int length);
700 extern CORE_ADDR parse_and_eval_address (char *exp);
702 extern LONGEST parse_and_eval_long (char *exp);
704 extern void unop_promote (const struct language_defn *language,
705 struct gdbarch *gdbarch,
706 struct value **arg1);
708 extern void binop_promote (const struct language_defn *language,
709 struct gdbarch *gdbarch,
710 struct value **arg1, struct value **arg2);
712 extern struct value *access_value_history (int num);
714 extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
715 struct internalvar *var);
717 extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
719 extern void set_internalvar (struct internalvar *var, struct value *val);
721 extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
723 extern void set_internalvar_string (struct internalvar *var,
726 extern void clear_internalvar (struct internalvar *var);
728 extern void set_internalvar_component (struct internalvar *var,
730 int bitpos, int bitsize,
731 struct value *newvalue);
733 extern struct internalvar *lookup_only_internalvar (const char *name);
735 extern struct internalvar *create_internalvar (const char *name);
737 typedef struct value * (*internalvar_make_value) (struct gdbarch *,
738 struct internalvar *);
739 extern struct internalvar *
740 create_internalvar_type_lazy (char *name, internalvar_make_value fun);
742 extern struct internalvar *lookup_internalvar (const char *name);
744 extern int value_equal (struct value *arg1, struct value *arg2);
746 extern int value_equal_contents (struct value *arg1, struct value *arg2);
748 extern int value_less (struct value *arg1, struct value *arg2);
750 extern int value_logical_not (struct value *arg1);
754 extern struct value *value_of_this (const struct language_defn *lang);
756 extern struct value *value_of_this_silent (const struct language_defn *lang);
758 extern struct value *value_x_binop (struct value *arg1, struct value *arg2,
760 enum exp_opcode otherop,
763 extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op,
766 extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f,
767 int j, struct type *type, int offset);
769 extern int binop_types_user_defined_p (enum exp_opcode op,
773 extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1,
776 extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1);
778 extern int destructor_name_p (const char *name, struct type *type);
780 extern void value_incref (struct value *val);
782 extern void value_free (struct value *val);
784 extern void free_all_values (void);
786 extern void free_value_chain (struct value *v);
788 extern void release_value (struct value *val);
790 extern void release_value_or_incref (struct value *val);
792 extern int record_latest_value (struct value *val);
794 extern void modify_field (struct type *type, gdb_byte *addr,
795 LONGEST fieldval, int bitpos, int bitsize);
797 extern void type_print (struct type *type, const char *varstring,
798 struct ui_file *stream, int show);
800 extern char *type_to_string (struct type *type);
802 extern gdb_byte *baseclass_addr (struct type *type, int index,
804 struct value **valuep, int *errp);
806 extern void print_longest (struct ui_file *stream, int format,
807 int use_local, LONGEST val);
809 extern void print_floating (const gdb_byte *valaddr, struct type *type,
810 struct ui_file *stream);
812 extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
813 struct ui_file *stream);
815 extern void value_print (struct value *val, struct ui_file *stream,
816 const struct value_print_options *options);
818 extern void value_print_array_elements (struct value *val,
819 struct ui_file *stream, int format,
820 enum val_prettyprint pretty);
822 extern struct value *value_release_to_mark (struct value *mark);
824 extern void val_print (struct type *type, const gdb_byte *valaddr,
825 int embedded_offset, CORE_ADDR address,
826 struct ui_file *stream, int recurse,
827 const struct value *val,
828 const struct value_print_options *options,
829 const struct language_defn *language);
831 extern void common_val_print (struct value *val,
832 struct ui_file *stream, int recurse,
833 const struct value_print_options *options,
834 const struct language_defn *language);
836 extern int val_print_string (struct type *elttype, const char *encoding,
837 CORE_ADDR addr, int len,
838 struct ui_file *stream,
839 const struct value_print_options *options);
841 extern void print_variable_and_value (const char *name,
843 struct frame_info *frame,
844 struct ui_file *stream,
847 extern int check_field (struct type *, const char *);
849 extern void typedef_print (struct type *type, struct symbol *news,
850 struct ui_file *stream);
852 extern char *internalvar_name (struct internalvar *var);
854 extern void preserve_values (struct objfile *);
858 extern struct value *value_copy (struct value *);
860 extern struct value *value_non_lval (struct value *);
862 extern void preserve_one_value (struct value *, struct objfile *, htab_t);
866 extern struct value *varying_to_slice (struct value *);
868 extern struct value *value_slice (struct value *, int, int);
870 extern struct value *value_literal_complex (struct value *, struct value *,
873 extern struct value *find_function_in_inferior (const char *,
876 extern struct value *value_allocate_space_in_inferior (int);
878 extern struct value *value_subscripted_rvalue (struct value *array,
879 LONGEST index, int lowerbound);
881 /* User function handler. */
883 typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
884 const struct language_defn *language,
887 struct value **argv);
889 void add_internal_function (const char *name, const char *doc,
890 internal_function_fn handler,
893 struct value *call_internal_function (struct gdbarch *gdbarch,
894 const struct language_defn *language,
895 struct value *function,
896 int argc, struct value **argv);
898 char *value_internal_function_name (struct value *);
900 #endif /* !defined (VALUE_H) */