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 /* Helper function to check the validity of some bits of a value.
218 If TYPE represents some aggregate type (e.g., a structure), return 1.
220 Otherwise, any of the bytes starting at OFFSET and extending for
221 TYPE_LENGTH(TYPE) bytes are invalid, print a message to STREAM and
222 return 0. The checking is done using FUNCS.
224 Otherwise, return 1. */
226 extern int valprint_check_validity (struct ui_file *stream, struct type *type,
228 const struct value *val);
230 extern struct value *allocate_optimized_out_value (struct type *type);
232 /* If VALUE is lval_computed, return its lval_funcs structure. */
234 extern const struct lval_funcs *value_computed_funcs (const struct value *);
236 /* If VALUE is lval_computed, return its closure. The meaning of the
237 returned value depends on the functions VALUE uses. */
239 extern void *value_computed_closure (const struct value *value);
241 /* If zero, contents of this value are in the contents field. If
242 nonzero, contents are in inferior. If the lval field is lval_memory,
243 the contents are in inferior memory at location.address plus offset.
244 The lval field may also be lval_register.
246 WARNING: This field is used by the code which handles watchpoints
247 (see breakpoint.c) to decide whether a particular value can be
248 watched by hardware watchpoints. If the lazy flag is set for some
249 member of a value chain, it is assumed that this member of the
250 chain doesn't need to be watched as part of watching the value
251 itself. This is how GDB avoids watching the entire struct or array
252 when the user wants to watch a single struct member or array
253 element. If you ever change the way lazy flag is set and reset, be
254 sure to consider this use as well! */
256 extern int value_lazy (struct value *);
257 extern void set_value_lazy (struct value *value, int val);
259 extern int value_stack (struct value *);
260 extern void set_value_stack (struct value *value, int val);
262 /* value_contents() and value_contents_raw() both return the address
263 of the gdb buffer used to hold a copy of the contents of the lval.
264 value_contents() is used when the contents of the buffer are needed
265 -- it uses value_fetch_lazy() to load the buffer from the process
266 being debugged if it hasn't already been loaded
267 (value_contents_writeable() is used when a writeable but fetched
268 buffer is required).. value_contents_raw() is used when data is
269 being stored into the buffer, or when it is certain that the
270 contents of the buffer are valid.
272 Note: The contents pointer is adjusted by the offset required to
273 get to the real subobject, if the value happens to represent
274 something embedded in a larger run-time object. */
276 extern gdb_byte *value_contents_raw (struct value *);
278 /* Actual contents of the value. For use of this value; setting it
279 uses the stuff above. Not valid if lazy is nonzero. Target
280 byte-order. We force it to be aligned properly for any possible
281 value. Note that a value therefore extends beyond what is
284 extern const gdb_byte *value_contents (struct value *);
285 extern gdb_byte *value_contents_writeable (struct value *);
287 /* The ALL variants of the above two macros do not adjust the returned
288 pointer by the embedded_offset value. */
290 extern gdb_byte *value_contents_all_raw (struct value *);
291 extern const gdb_byte *value_contents_all (struct value *);
293 /* Like value_contents_all, but does not require that the returned
294 bits be valid. This should only be used in situations where you
295 plan to check the validity manually. */
296 extern const gdb_byte *value_contents_for_printing (struct value *value);
298 /* Like value_contents_for_printing, but accepts a constant value
299 pointer. Unlike value_contents_for_printing however, the pointed
300 value must _not_ be lazy. */
301 extern const gdb_byte *
302 value_contents_for_printing_const (const struct value *value);
304 extern int value_fetch_lazy (struct value *val);
305 extern int value_contents_equal (struct value *val1, struct value *val2);
307 /* If nonzero, this is the value of a variable which does not actually
308 exist in the program. */
309 extern int value_optimized_out (struct value *value);
310 extern void set_value_optimized_out (struct value *value, int val);
312 /* Like value_optimized_out, but return false if any bit in the object
314 extern int value_entirely_optimized_out (const struct value *value);
316 /* Set or return field indicating whether a variable is initialized or
317 not, based on debugging information supplied by the compiler.
318 1 = initialized; 0 = uninitialized. */
319 extern int value_initialized (struct value *);
320 extern void set_value_initialized (struct value *, int);
322 /* Set COMPONENT's location as appropriate for a component of WHOLE
323 --- regardless of what kind of lvalue WHOLE is. */
324 extern void set_value_component_location (struct value *component,
325 const struct value *whole);
327 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
328 single value might have multiple LVALs), this hacked interface is
329 limited to just the first PIECE. Expect further change. */
330 /* Type of value; either not an lval, or one of the various different
331 possible kinds of lval. */
332 extern enum lval_type *deprecated_value_lval_hack (struct value *);
333 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
335 /* Like VALUE_LVAL, except the parameter can be const. */
336 extern enum lval_type value_lval_const (const struct value *value);
338 /* If lval == lval_memory, return the address in the inferior. If
339 lval == lval_register, return the byte offset into the registers
340 structure. Otherwise, return 0. The returned address
341 includes the offset, if any. */
342 extern CORE_ADDR value_address (const struct value *);
344 /* Like value_address, except the result does not include value's
346 extern CORE_ADDR value_raw_address (struct value *);
348 /* Set the address of a value. */
349 extern void set_value_address (struct value *, CORE_ADDR);
351 /* Pointer to internal variable. */
352 extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
353 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
355 /* Frame register value is relative to. This will be described in the
356 lval enum above as "lval_register". */
357 extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
358 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
360 /* Register number if the value is from a register. */
361 extern short *deprecated_value_regnum_hack (struct value *);
362 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
364 /* Return value after lval_funcs->coerce_ref (after check_typedef). Return
365 NULL if lval_funcs->coerce_ref is not applicable for whatever reason. */
367 extern struct value *coerce_ref_if_computed (const struct value *arg);
369 /* Setup a new value type and enclosing value type for dereferenced value VALUE.
370 ENC_TYPE is the new enclosing type that should be set. ORIGINAL_TYPE and
371 ORIGINAL_VAL are the type and value of the original reference or pointer.
373 Note, that VALUE is modified by this function.
375 It is a common implementation for coerce_ref and value_ind. */
377 extern struct value * readjust_indirect_value_type (struct value *value,
378 struct type *enc_type,
379 struct type *original_type,
380 struct value *original_val);
382 /* Convert a REF to the object referenced. */
384 extern struct value *coerce_ref (struct value *value);
386 /* If ARG is an array, convert it to a pointer.
387 If ARG is a function, convert it to a function pointer.
389 References are dereferenced. */
391 extern struct value *coerce_array (struct value *value);
393 /* Given a value, determine whether the bits starting at OFFSET and
394 extending for LENGTH bits are valid. This returns nonzero if all
395 bits in the given range are valid, zero if any bit is invalid. */
397 extern int value_bits_valid (const struct value *value,
398 int offset, int length);
400 /* Given a value, determine whether the bits starting at OFFSET and
401 extending for LENGTH bits are a synthetic pointer. */
403 extern int value_bits_synthetic_pointer (const struct value *value,
404 int offset, int length);
406 /* Given a value, determine whether the contents bytes starting at
407 OFFSET and extending for LENGTH bytes are available. This returns
408 nonzero if all bytes in the given range are available, zero if any
409 byte is unavailable. */
411 extern int value_bytes_available (const struct value *value,
412 int offset, int length);
414 /* Like value_bytes_available, but return false if any byte in the
415 whole object is unavailable. */
416 extern int value_entirely_available (struct value *value);
418 /* Mark VALUE's content bytes starting at OFFSET and extending for
419 LENGTH bytes as unavailable. */
421 extern void mark_value_bytes_unavailable (struct value *value,
422 int offset, int length);
424 /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
425 LENGTH bytes of VAL2's contents starting at OFFSET2.
427 Note that "contents" refers to the whole value's contents
428 (value_contents_all), without any embedded offset adjustment. For
429 example, to compare a complete object value with itself, including
430 its enclosing type chunk, you'd do:
432 int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
433 value_available_contents (val, 0, val, 0, len);
435 Returns true iff the set of available contents match. Unavailable
436 contents compare equal with unavailable contents, and different
437 with any available byte. For example, if 'x's represent an
438 unavailable byte, and 'V' and 'Z' represent different available
439 bytes, in a value with length 16:
442 contents: xxxxVVVVxxxxVVZZ
446 value_available_contents_eq(val, 0, val, 8, 6) => 1
447 value_available_contents_eq(val, 0, val, 4, 4) => 1
448 value_available_contents_eq(val, 0, val, 8, 8) => 0
449 value_available_contents_eq(val, 4, val, 12, 2) => 1
450 value_available_contents_eq(val, 4, val, 12, 4) => 0
451 value_available_contents_eq(val, 3, val, 4, 4) => 0
454 extern int value_available_contents_eq (const struct value *val1, int offset1,
455 const struct value *val2, int offset2,
458 /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which
459 is (or will be copied to) VAL's contents buffer offset by
460 EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
461 Marks value contents ranges as unavailable if the corresponding
462 memory is likewise unavailable. STACK indicates whether the memory
463 is known to be stack memory. */
465 extern void read_value_memory (struct value *val, int embedded_offset,
466 int stack, CORE_ADDR memaddr,
467 gdb_byte *buffer, size_t length);
472 #include "gdbtypes.h"
473 #include "expression.h"
478 extern void print_address_demangle (struct gdbarch *, CORE_ADDR,
479 struct ui_file *, int);
481 extern LONGEST value_as_long (struct value *val);
482 extern DOUBLEST value_as_double (struct value *val);
483 extern CORE_ADDR value_as_address (struct value *val);
485 extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr);
486 extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
488 extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
490 extern int unpack_value_bits_as_long (struct type *field_type,
491 const gdb_byte *valaddr,
492 int embedded_offset, int bitpos,
494 const struct value *original_value,
497 extern LONGEST unpack_field_as_long (struct type *type,
498 const gdb_byte *valaddr,
500 extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr,
501 int embedded_offset, int fieldno,
502 const struct value *val, LONGEST *result);
504 extern struct value *value_field_bitfield (struct type *type, int fieldno,
505 const gdb_byte *valaddr,
507 const struct value *val);
509 extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num);
511 extern struct value *value_from_longest (struct type *type, LONGEST num);
512 extern struct value *value_from_ulongest (struct type *type, ULONGEST num);
513 extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
514 extern struct value *value_from_double (struct type *type, DOUBLEST num);
515 extern struct value *value_from_decfloat (struct type *type,
516 const gdb_byte *decbytes);
517 extern struct value *value_from_history_ref (char *, char **);
519 extern struct value *value_at (struct type *type, CORE_ADDR addr);
520 extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
522 extern struct value *value_from_contents_and_address (struct type *,
525 extern struct value *value_from_contents (struct type *, const gdb_byte *);
527 extern struct value *default_value_from_register (struct type *type,
529 struct frame_info *frame);
531 extern void read_frame_register_value (struct value *value,
532 struct frame_info *frame);
534 extern struct value *value_from_register (struct type *type, int regnum,
535 struct frame_info *frame);
537 extern CORE_ADDR address_from_register (struct type *type, int regnum,
538 struct frame_info *frame);
540 extern struct value *value_of_variable (struct symbol *var,
541 const struct block *b);
543 extern struct value *address_of_variable (struct symbol *var, struct block *b);
545 extern struct value *value_of_register (int regnum, struct frame_info *frame);
547 struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
549 extern int symbol_read_needs_frame (struct symbol *);
551 extern struct value *read_var_value (struct symbol *var,
552 struct frame_info *frame);
554 extern struct value *default_read_var_value (struct symbol *var,
555 struct frame_info *frame);
557 extern struct value *allocate_value (struct type *type);
558 extern struct value *allocate_value_lazy (struct type *type);
559 extern void allocate_value_contents (struct value *value);
560 extern void value_contents_copy (struct value *dst, int dst_offset,
561 struct value *src, int src_offset,
563 extern void value_contents_copy_raw (struct value *dst, int dst_offset,
564 struct value *src, int src_offset,
567 extern struct value *allocate_repeat_value (struct type *type, int count);
569 extern struct value *value_mark (void);
571 extern void value_free_to_mark (struct value *mark);
573 extern struct value *value_cstring (char *ptr, int len,
574 struct type *char_type);
575 extern struct value *value_string (char *ptr, int len,
576 struct type *char_type);
577 extern struct value *value_bitstring (char *ptr, int len,
578 struct type *index_type);
580 extern struct value *value_array (int lowbound, int highbound,
581 struct value **elemvec);
583 extern struct value *value_concat (struct value *arg1, struct value *arg2);
585 extern struct value *value_binop (struct value *arg1, struct value *arg2,
588 extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
590 extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
592 extern int value_must_coerce_to_target (struct value *arg1);
594 extern struct value *value_coerce_to_target (struct value *arg1);
596 extern struct value *value_coerce_array (struct value *arg1);
598 extern struct value *value_coerce_function (struct value *arg1);
600 extern struct value *value_ind (struct value *arg1);
602 extern struct value *value_addr (struct value *arg1);
604 extern struct value *value_ref (struct value *arg1);
606 extern struct value *value_assign (struct value *toval,
607 struct value *fromval);
609 extern struct value *value_pos (struct value *arg1);
611 extern struct value *value_neg (struct value *arg1);
613 extern struct value *value_complement (struct value *arg1);
615 extern struct value *value_struct_elt (struct value **argp,
617 const char *name, int *static_memfuncp,
620 extern struct value *value_aggregate_elt (struct type *curtype,
622 struct type *expect_type,
626 extern struct value *value_static_field (struct type *type, int fieldno);
628 extern struct fn_field *value_find_oload_method_list (struct value **,
631 struct type **, int *);
633 enum oload_search_type { NON_METHOD, METHOD, BOTH };
635 extern int find_overload_match (struct value **args, int nargs,
637 enum oload_search_type method, int lax,
638 struct value **objp, struct symbol *fsym,
639 struct value **valp, struct symbol **symp,
640 int *staticp, const int no_adl);
642 extern struct value *value_field (struct value *arg1, int fieldno);
644 extern struct value *value_primitive_field (struct value *arg1, int offset,
646 struct type *arg_type);
649 extern struct type *value_rtti_indirect_type (struct value *, int *, int *,
652 extern struct value *value_full_object (struct value *, struct type *, int,
655 extern struct value *value_cast_pointers (struct type *, struct value *);
657 extern struct value *value_cast (struct type *type, struct value *arg2);
659 extern struct value *value_reinterpret_cast (struct type *type,
662 extern struct value *value_dynamic_cast (struct type *type, struct value *arg);
664 extern struct value *value_zero (struct type *type, enum lval_type lv);
666 extern struct value *value_one (struct type *type);
668 extern struct value *value_repeat (struct value *arg1, int count);
670 extern struct value *value_subscript (struct value *array, LONGEST index);
672 extern struct value *value_bitstring_subscript (struct type *type,
673 struct value *bitstring,
676 extern struct value *register_value_being_returned (struct type *valtype,
677 struct regcache *retbuf);
679 extern int value_in (struct value *element, struct value *set);
681 extern int value_bit_index (struct type *type, const gdb_byte *addr,
684 extern int using_struct_return (struct gdbarch *gdbarch,
685 struct type *func_type,
686 struct type *value_type);
688 extern struct value *evaluate_expression (struct expression *exp);
690 extern struct value *evaluate_type (struct expression *exp);
692 extern struct value *evaluate_subexp (struct type *expect_type,
693 struct expression *exp,
694 int *pos, enum noside noside);
696 extern struct value *evaluate_subexpression_type (struct expression *exp,
699 extern void fetch_subexp_value (struct expression *exp, int *pc,
700 struct value **valp, struct value **resultp,
701 struct value **val_chain);
703 extern char *extract_field_op (struct expression *exp, int *subexp);
705 extern struct value *evaluate_subexp_with_coercion (struct expression *,
708 extern struct value *parse_and_eval (char *exp);
710 extern struct value *parse_to_comma_and_eval (char **expp);
712 extern struct type *parse_and_eval_type (char *p, int length);
714 extern CORE_ADDR parse_and_eval_address (char *exp);
716 extern LONGEST parse_and_eval_long (char *exp);
718 extern void unop_promote (const struct language_defn *language,
719 struct gdbarch *gdbarch,
720 struct value **arg1);
722 extern void binop_promote (const struct language_defn *language,
723 struct gdbarch *gdbarch,
724 struct value **arg1, struct value **arg2);
726 extern struct value *access_value_history (int num);
728 extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
729 struct internalvar *var);
731 extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
733 extern void set_internalvar (struct internalvar *var, struct value *val);
735 extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
737 extern void set_internalvar_string (struct internalvar *var,
740 extern void clear_internalvar (struct internalvar *var);
742 extern void set_internalvar_component (struct internalvar *var,
744 int bitpos, int bitsize,
745 struct value *newvalue);
747 extern struct internalvar *lookup_only_internalvar (const char *name);
749 extern struct internalvar *create_internalvar (const char *name);
751 typedef struct value * (*internalvar_make_value) (struct gdbarch *,
752 struct internalvar *);
753 extern struct internalvar *
754 create_internalvar_type_lazy (char *name, internalvar_make_value fun);
756 extern struct internalvar *lookup_internalvar (const char *name);
758 extern int value_equal (struct value *arg1, struct value *arg2);
760 extern int value_equal_contents (struct value *arg1, struct value *arg2);
762 extern int value_less (struct value *arg1, struct value *arg2);
764 extern int value_logical_not (struct value *arg1);
768 extern struct value *value_of_this (const struct language_defn *lang);
770 extern struct value *value_of_this_silent (const struct language_defn *lang);
772 extern struct value *value_x_binop (struct value *arg1, struct value *arg2,
774 enum exp_opcode otherop,
777 extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op,
780 extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f,
781 int j, struct type *type, int offset);
783 extern int binop_types_user_defined_p (enum exp_opcode op,
787 extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1,
790 extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1);
792 extern int destructor_name_p (const char *name, struct type *type);
794 extern void value_incref (struct value *val);
796 extern void value_free (struct value *val);
798 extern void free_all_values (void);
800 extern void free_value_chain (struct value *v);
802 extern void release_value (struct value *val);
804 extern void release_value_or_incref (struct value *val);
806 extern int record_latest_value (struct value *val);
808 extern void modify_field (struct type *type, gdb_byte *addr,
809 LONGEST fieldval, int bitpos, int bitsize);
811 extern void type_print (struct type *type, const char *varstring,
812 struct ui_file *stream, int show);
814 extern char *type_to_string (struct type *type);
816 extern gdb_byte *baseclass_addr (struct type *type, int index,
818 struct value **valuep, int *errp);
820 extern void print_longest (struct ui_file *stream, int format,
821 int use_local, LONGEST val);
823 extern void print_floating (const gdb_byte *valaddr, struct type *type,
824 struct ui_file *stream);
826 extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
827 struct ui_file *stream);
829 extern void value_print (struct value *val, struct ui_file *stream,
830 const struct value_print_options *options);
832 extern void value_print_array_elements (struct value *val,
833 struct ui_file *stream, int format,
834 enum val_prettyprint pretty);
836 extern struct value *value_release_to_mark (struct value *mark);
838 extern void val_print (struct type *type, const gdb_byte *valaddr,
839 int embedded_offset, CORE_ADDR address,
840 struct ui_file *stream, int recurse,
841 const struct value *val,
842 const struct value_print_options *options,
843 const struct language_defn *language);
845 extern void common_val_print (struct value *val,
846 struct ui_file *stream, int recurse,
847 const struct value_print_options *options,
848 const struct language_defn *language);
850 extern int val_print_string (struct type *elttype, const char *encoding,
851 CORE_ADDR addr, int len,
852 struct ui_file *stream,
853 const struct value_print_options *options);
855 extern void print_variable_and_value (const char *name,
857 struct frame_info *frame,
858 struct ui_file *stream,
861 extern int check_field (struct type *, const char *);
863 extern void typedef_print (struct type *type, struct symbol *news,
864 struct ui_file *stream);
866 extern char *internalvar_name (struct internalvar *var);
868 extern void preserve_values (struct objfile *);
872 extern struct value *value_copy (struct value *);
874 extern struct value *value_non_lval (struct value *);
876 extern void preserve_one_value (struct value *, struct objfile *, htab_t);
880 extern struct value *varying_to_slice (struct value *);
882 extern struct value *value_slice (struct value *, int, int);
884 extern struct value *value_literal_complex (struct value *, struct value *,
887 extern struct value *find_function_in_inferior (const char *,
890 extern struct value *value_allocate_space_in_inferior (int);
892 extern struct value *value_subscripted_rvalue (struct value *array,
893 LONGEST index, int lowerbound);
895 /* User function handler. */
897 typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
898 const struct language_defn *language,
901 struct value **argv);
903 void add_internal_function (const char *name, const char *doc,
904 internal_function_fn handler,
907 struct value *call_internal_function (struct gdbarch *gdbarch,
908 const struct language_defn *language,
909 struct value *function,
910 int argc, struct value **argv);
912 char *value_internal_function_name (struct value *);
914 #endif /* !defined (VALUE_H) */