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 extern struct value *allocate_optimized_out_value (struct type *type);
212 /* If VALUE is lval_computed, return its lval_funcs structure. */
214 extern struct lval_funcs *value_computed_funcs (struct value *value);
216 /* If VALUE is lval_computed, return its closure. The meaning of the
217 returned value depends on the functions VALUE uses. */
219 extern void *value_computed_closure (const struct value *value);
221 /* If zero, contents of this value are in the contents field. If
222 nonzero, contents are in inferior. If the lval field is lval_memory,
223 the contents are in inferior memory at location.address plus offset.
224 The lval field may also be lval_register.
226 WARNING: This field is used by the code which handles watchpoints
227 (see breakpoint.c) to decide whether a particular value can be
228 watched by hardware watchpoints. If the lazy flag is set for some
229 member of a value chain, it is assumed that this member of the
230 chain doesn't need to be watched as part of watching the value
231 itself. This is how GDB avoids watching the entire struct or array
232 when the user wants to watch a single struct member or array
233 element. If you ever change the way lazy flag is set and reset, be
234 sure to consider this use as well! */
236 extern int value_lazy (struct value *);
237 extern void set_value_lazy (struct value *value, int val);
239 extern int value_stack (struct value *);
240 extern void set_value_stack (struct value *value, int val);
242 /* value_contents() and value_contents_raw() both return the address
243 of the gdb buffer used to hold a copy of the contents of the lval.
244 value_contents() is used when the contents of the buffer are needed
245 -- it uses value_fetch_lazy() to load the buffer from the process
246 being debugged if it hasn't already been loaded
247 (value_contents_writeable() is used when a writeable but fetched
248 buffer is required).. value_contents_raw() is used when data is
249 being stored into the buffer, or when it is certain that the
250 contents of the buffer are valid.
252 Note: The contents pointer is adjusted by the offset required to
253 get to the real subobject, if the value happens to represent
254 something embedded in a larger run-time object. */
256 extern gdb_byte *value_contents_raw (struct value *);
258 /* Actual contents of the value. For use of this value; setting it
259 uses the stuff above. Not valid if lazy is nonzero. Target
260 byte-order. We force it to be aligned properly for any possible
261 value. Note that a value therefore extends beyond what is
264 extern const gdb_byte *value_contents (struct value *);
265 extern gdb_byte *value_contents_writeable (struct value *);
267 /* The ALL variants of the above two macros do not adjust the returned
268 pointer by the embedded_offset value. */
270 extern gdb_byte *value_contents_all_raw (struct value *);
271 extern const gdb_byte *value_contents_all (struct value *);
273 /* Like value_contents_all, but does not require that the returned
274 bits be valid. This should only be used in situations where you
275 plan to check the validity manually. */
276 extern const gdb_byte *value_contents_for_printing (struct value *value);
278 /* Like value_contents_for_printing, but accepts a constant value
279 pointer. Unlike value_contents_for_printing however, the pointed
280 value must _not_ be lazy. */
281 extern const gdb_byte *
282 value_contents_for_printing_const (const struct value *value);
284 extern int value_fetch_lazy (struct value *val);
285 extern int value_contents_equal (struct value *val1, struct value *val2);
287 /* If nonzero, this is the value of a variable which does not actually
288 exist in the program. */
289 extern int value_optimized_out (struct value *value);
290 extern void set_value_optimized_out (struct value *value, int val);
292 /* Like value_optimized_out, but return false if any bit in the object
294 extern int value_entirely_optimized_out (const struct value *value);
296 /* Set or return field indicating whether a variable is initialized or
297 not, based on debugging information supplied by the compiler.
298 1 = initialized; 0 = uninitialized. */
299 extern int value_initialized (struct value *);
300 extern void set_value_initialized (struct value *, int);
302 /* Set COMPONENT's location as appropriate for a component of WHOLE
303 --- regardless of what kind of lvalue WHOLE is. */
304 extern void set_value_component_location (struct value *component,
305 const struct value *whole);
307 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
308 single value might have multiple LVALs), this hacked interface is
309 limited to just the first PIECE. Expect further change. */
310 /* Type of value; either not an lval, or one of the various different
311 possible kinds of lval. */
312 extern enum lval_type *deprecated_value_lval_hack (struct value *);
313 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
315 /* If lval == lval_memory, return the address in the inferior. If
316 lval == lval_register, return the byte offset into the registers
317 structure. Otherwise, return 0. The returned address
318 includes the offset, if any. */
319 extern CORE_ADDR value_address (const struct value *);
321 /* Like value_address, except the result does not include value's
323 extern CORE_ADDR value_raw_address (struct value *);
325 /* Set the address of a value. */
326 extern void set_value_address (struct value *, CORE_ADDR);
328 /* Pointer to internal variable. */
329 extern struct internalvar **deprecated_value_internalvar_hack (struct value *);
330 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
332 /* Frame register value is relative to. This will be described in the
333 lval enum above as "lval_register". */
334 extern struct frame_id *deprecated_value_frame_id_hack (struct value *);
335 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
337 /* Register number if the value is from a register. */
338 extern short *deprecated_value_regnum_hack (struct value *);
339 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
341 /* Convert a REF to the object referenced. */
343 extern struct value *coerce_ref (struct value *value);
345 /* If ARG is an array, convert it to a pointer.
346 If ARG is a function, convert it to a function pointer.
348 References are dereferenced. */
350 extern struct value *coerce_array (struct value *value);
352 /* Given a value, determine whether the bits starting at OFFSET and
353 extending for LENGTH bits are valid. This returns nonzero if all
354 bits in the given range are valid, zero if any bit is invalid. */
356 extern int value_bits_valid (const struct value *value,
357 int offset, int length);
359 /* Given a value, determine whether the bits starting at OFFSET and
360 extending for LENGTH bits are a synthetic pointer. */
362 extern int value_bits_synthetic_pointer (const struct value *value,
363 int offset, int length);
365 /* Given a value, determine whether the contents bytes starting at
366 OFFSET and extending for LENGTH bytes are available. This returns
367 nonzero if all bytes in the given range are available, zero if any
368 byte is unavailable. */
370 extern int value_bytes_available (const struct value *value,
371 int offset, int length);
373 /* Like value_bytes_available, but return false if any byte in the
374 whole object is unavailable. */
375 extern int value_entirely_available (struct value *value);
377 /* Mark VALUE's content bytes starting at OFFSET and extending for
378 LENGTH bytes as unavailable. */
380 extern void mark_value_bytes_unavailable (struct value *value,
381 int offset, int length);
383 /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
384 LENGTH bytes of VAL2's contents starting at OFFSET2.
386 Note that "contents" refers to the whole value's contents
387 (value_contents_all), without any embedded offset adjustment. For
388 example, to compare a complete object value with itself, including
389 its enclosing type chunk, you'd do:
391 int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
392 value_available_contents (val, 0, val, 0, len);
394 Returns true iff the set of available contents match. Unavailable
395 contents compare equal with unavailable contents, and different
396 with any available byte. For example, if 'x's represent an
397 unavailable byte, and 'V' and 'Z' represent different available
398 bytes, in a value with length 16:
401 contents: xxxxVVVVxxxxVVZZ
405 value_available_contents_eq(val, 0, val, 8, 6) => 1
406 value_available_contents_eq(val, 0, val, 4, 4) => 1
407 value_available_contents_eq(val, 0, val, 8, 8) => 0
408 value_available_contents_eq(val, 4, val, 12, 2) => 1
409 value_available_contents_eq(val, 4, val, 12, 4) => 0
410 value_available_contents_eq(val, 3, val, 4, 4) => 0
413 extern int value_available_contents_eq (const struct value *val1, int offset1,
414 const struct value *val2, int offset2,
417 /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which
418 is (or will be copied to) VAL's contents buffer offset by
419 EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
420 Marks value contents ranges as unavailable if the corresponding
421 memory is likewise unavailable. STACK indicates whether the memory
422 is known to be stack memory. */
424 extern void read_value_memory (struct value *val, int embedded_offset,
425 int stack, CORE_ADDR memaddr,
426 gdb_byte *buffer, size_t length);
431 #include "gdbtypes.h"
432 #include "expression.h"
437 extern void print_address_demangle (struct gdbarch *, CORE_ADDR,
438 struct ui_file *, int);
440 extern LONGEST value_as_long (struct value *val);
441 extern DOUBLEST value_as_double (struct value *val);
442 extern CORE_ADDR value_as_address (struct value *val);
444 extern LONGEST unpack_long (struct type *type, const gdb_byte *valaddr);
445 extern DOUBLEST unpack_double (struct type *type, const gdb_byte *valaddr,
447 extern CORE_ADDR unpack_pointer (struct type *type, const gdb_byte *valaddr);
449 extern int unpack_value_bits_as_long (struct type *field_type,
450 const gdb_byte *valaddr,
451 int embedded_offset, int bitpos,
453 const struct value *original_value,
456 extern LONGEST unpack_field_as_long (struct type *type,
457 const gdb_byte *valaddr,
459 extern int unpack_value_field_as_long (struct type *type, const gdb_byte *valaddr,
460 int embedded_offset, int fieldno,
461 const struct value *val, LONGEST *result);
463 extern struct value *value_field_bitfield (struct type *type, int fieldno,
464 const gdb_byte *valaddr,
466 const struct value *val);
468 extern void pack_long (gdb_byte *buf, struct type *type, LONGEST num);
470 extern struct value *value_from_longest (struct type *type, LONGEST num);
471 extern struct value *value_from_ulongest (struct type *type, ULONGEST num);
472 extern struct value *value_from_pointer (struct type *type, CORE_ADDR addr);
473 extern struct value *value_from_double (struct type *type, DOUBLEST num);
474 extern struct value *value_from_decfloat (struct type *type,
475 const gdb_byte *decbytes);
476 extern struct value *value_from_history_ref (char *, char **);
478 extern struct value *value_at (struct type *type, CORE_ADDR addr);
479 extern struct value *value_at_lazy (struct type *type, CORE_ADDR addr);
481 extern struct value *value_from_contents_and_address (struct type *,
484 extern struct value *value_from_contents (struct type *, const gdb_byte *);
486 extern struct value *default_value_from_register (struct type *type,
488 struct frame_info *frame);
490 extern struct value *value_from_register (struct type *type, int regnum,
491 struct frame_info *frame);
493 extern CORE_ADDR address_from_register (struct type *type, int regnum,
494 struct frame_info *frame);
496 extern struct value *value_of_variable (struct symbol *var, struct block *b);
498 extern struct value *address_of_variable (struct symbol *var, struct block *b);
500 extern struct value *value_of_register (int regnum, struct frame_info *frame);
502 struct value *value_of_register_lazy (struct frame_info *frame, int regnum);
504 extern int symbol_read_needs_frame (struct symbol *);
506 extern struct value *read_var_value (struct symbol *var,
507 struct frame_info *frame);
509 extern struct value *allocate_value (struct type *type);
510 extern struct value *allocate_value_lazy (struct type *type);
511 extern void allocate_value_contents (struct value *value);
512 extern void value_contents_copy (struct value *dst, int dst_offset,
513 struct value *src, int src_offset,
515 extern void value_contents_copy_raw (struct value *dst, int dst_offset,
516 struct value *src, int src_offset,
519 extern struct value *allocate_repeat_value (struct type *type, int count);
521 extern struct value *value_mark (void);
523 extern void value_free_to_mark (struct value *mark);
525 extern struct value *value_cstring (char *ptr, int len,
526 struct type *char_type);
527 extern struct value *value_string (char *ptr, int len,
528 struct type *char_type);
529 extern struct value *value_bitstring (char *ptr, int len,
530 struct type *index_type);
532 extern struct value *value_array (int lowbound, int highbound,
533 struct value **elemvec);
535 extern struct value *value_concat (struct value *arg1, struct value *arg2);
537 extern struct value *value_binop (struct value *arg1, struct value *arg2,
540 extern struct value *value_ptradd (struct value *arg1, LONGEST arg2);
542 extern LONGEST value_ptrdiff (struct value *arg1, struct value *arg2);
544 extern int value_must_coerce_to_target (struct value *arg1);
546 extern struct value *value_coerce_to_target (struct value *arg1);
548 extern struct value *value_coerce_array (struct value *arg1);
550 extern struct value *value_coerce_function (struct value *arg1);
552 extern struct value *value_ind (struct value *arg1);
554 extern struct value *value_addr (struct value *arg1);
556 extern struct value *value_ref (struct value *arg1);
558 extern struct value *value_assign (struct value *toval,
559 struct value *fromval);
561 extern struct value *value_pos (struct value *arg1);
563 extern struct value *value_neg (struct value *arg1);
565 extern struct value *value_complement (struct value *arg1);
567 extern struct value *value_struct_elt (struct value **argp,
569 const char *name, int *static_memfuncp,
572 extern struct value *value_aggregate_elt (struct type *curtype,
574 struct type *expect_type,
578 extern struct value *value_static_field (struct type *type, int fieldno);
580 extern struct fn_field *value_find_oload_method_list (struct value **,
583 struct type **, int *);
585 enum oload_search_type { NON_METHOD, METHOD, BOTH };
587 extern int find_overload_match (struct type **arg_types, int nargs,
589 enum oload_search_type method, int lax,
590 struct value **objp, struct symbol *fsym,
591 struct value **valp, struct symbol **symp,
592 int *staticp, const int no_adl);
594 extern struct value *value_field (struct value *arg1, int fieldno);
596 extern struct value *value_primitive_field (struct value *arg1, int offset,
598 struct type *arg_type);
601 extern struct type *value_rtti_target_type (struct value *, int *, int *,
604 extern struct value *value_full_object (struct value *, struct type *, int,
607 extern struct value *value_cast_pointers (struct type *, struct value *);
609 extern struct value *value_cast (struct type *type, struct value *arg2);
611 extern struct value *value_reinterpret_cast (struct type *type,
614 extern struct value *value_dynamic_cast (struct type *type, struct value *arg);
616 extern struct value *value_zero (struct type *type, enum lval_type lv);
618 extern struct value *value_one (struct type *type, enum lval_type lv);
620 extern struct value *value_repeat (struct value *arg1, int count);
622 extern struct value *value_subscript (struct value *array, LONGEST index);
624 extern struct value *value_bitstring_subscript (struct type *type,
625 struct value *bitstring,
628 extern struct value *register_value_being_returned (struct type *valtype,
629 struct regcache *retbuf);
631 extern int value_in (struct value *element, struct value *set);
633 extern int value_bit_index (struct type *type, const gdb_byte *addr,
636 extern int using_struct_return (struct gdbarch *gdbarch,
637 struct type *func_type,
638 struct type *value_type);
640 extern struct value *evaluate_expression (struct expression *exp);
642 extern struct value *evaluate_type (struct expression *exp);
644 extern struct value *evaluate_subexp (struct type *expect_type,
645 struct expression *exp,
646 int *pos, enum noside noside);
648 extern struct value *evaluate_subexpression_type (struct expression *exp,
651 extern void fetch_subexp_value (struct expression *exp, int *pc,
652 struct value **valp, struct value **resultp,
653 struct value **val_chain);
655 extern char *extract_field_op (struct expression *exp, int *subexp);
657 extern struct value *evaluate_subexp_with_coercion (struct expression *,
660 extern struct value *parse_and_eval (char *exp);
662 extern struct value *parse_to_comma_and_eval (char **expp);
664 extern struct type *parse_and_eval_type (char *p, int length);
666 extern CORE_ADDR parse_and_eval_address (char *exp);
668 extern LONGEST parse_and_eval_long (char *exp);
670 extern void unop_promote (const struct language_defn *language,
671 struct gdbarch *gdbarch,
672 struct value **arg1);
674 extern void binop_promote (const struct language_defn *language,
675 struct gdbarch *gdbarch,
676 struct value **arg1, struct value **arg2);
678 extern struct value *access_value_history (int num);
680 extern struct value *value_of_internalvar (struct gdbarch *gdbarch,
681 struct internalvar *var);
683 extern int get_internalvar_integer (struct internalvar *var, LONGEST *l);
685 extern void set_internalvar (struct internalvar *var, struct value *val);
687 extern void set_internalvar_integer (struct internalvar *var, LONGEST l);
689 extern void set_internalvar_string (struct internalvar *var,
692 extern void clear_internalvar (struct internalvar *var);
694 extern void set_internalvar_component (struct internalvar *var,
696 int bitpos, int bitsize,
697 struct value *newvalue);
699 extern struct internalvar *lookup_only_internalvar (const char *name);
701 extern struct internalvar *create_internalvar (const char *name);
703 typedef struct value * (*internalvar_make_value) (struct gdbarch *,
704 struct internalvar *);
705 extern struct internalvar *
706 create_internalvar_type_lazy (char *name, internalvar_make_value fun);
708 extern struct internalvar *lookup_internalvar (const char *name);
710 extern int value_equal (struct value *arg1, struct value *arg2);
712 extern int value_equal_contents (struct value *arg1, struct value *arg2);
714 extern int value_less (struct value *arg1, struct value *arg2);
716 extern int value_logical_not (struct value *arg1);
720 extern struct value *value_of_this (const struct language_defn *lang,
723 extern struct value *value_x_binop (struct value *arg1, struct value *arg2,
725 enum exp_opcode otherop,
728 extern struct value *value_x_unop (struct value *arg1, enum exp_opcode op,
731 extern struct value *value_fn_field (struct value **arg1p, struct fn_field *f,
732 int j, struct type *type, int offset);
734 extern int binop_types_user_defined_p (enum exp_opcode op,
738 extern int binop_user_defined_p (enum exp_opcode op, struct value *arg1,
741 extern int unop_user_defined_p (enum exp_opcode op, struct value *arg1);
743 extern int destructor_name_p (const char *name, struct type *type);
745 extern void value_incref (struct value *val);
747 extern void value_free (struct value *val);
749 extern void free_all_values (void);
751 extern void free_value_chain (struct value *v);
753 extern void release_value (struct value *val);
755 extern int record_latest_value (struct value *val);
757 extern void modify_field (struct type *type, gdb_byte *addr,
758 LONGEST fieldval, int bitpos, int bitsize);
760 extern void type_print (struct type *type, char *varstring,
761 struct ui_file *stream, int show);
763 extern char *type_to_string (struct type *type);
765 extern gdb_byte *baseclass_addr (struct type *type, int index,
767 struct value **valuep, int *errp);
769 extern void print_longest (struct ui_file *stream, int format,
770 int use_local, LONGEST val);
772 extern void print_floating (const gdb_byte *valaddr, struct type *type,
773 struct ui_file *stream);
775 extern void print_decimal_floating (const gdb_byte *valaddr, struct type *type,
776 struct ui_file *stream);
778 extern int value_print (struct value *val, struct ui_file *stream,
779 const struct value_print_options *options);
781 extern void value_print_array_elements (struct value *val,
782 struct ui_file *stream, int format,
783 enum val_prettyprint pretty);
785 extern struct value *value_release_to_mark (struct value *mark);
787 extern int val_print (struct type *type, const gdb_byte *valaddr,
788 int embedded_offset, CORE_ADDR address,
789 struct ui_file *stream, int recurse,
790 const struct value *val,
791 const struct value_print_options *options,
792 const struct language_defn *language);
794 extern int common_val_print (struct value *val,
795 struct ui_file *stream, int recurse,
796 const struct value_print_options *options,
797 const struct language_defn *language);
799 extern int val_print_string (struct type *elttype, const char *encoding,
800 CORE_ADDR addr, int len,
801 struct ui_file *stream,
802 const struct value_print_options *options);
804 extern void print_variable_and_value (const char *name,
806 struct frame_info *frame,
807 struct ui_file *stream,
810 extern int check_field (struct type *, const char *);
812 extern void typedef_print (struct type *type, struct symbol *news,
813 struct ui_file *stream);
815 extern char *internalvar_name (struct internalvar *var);
817 extern void preserve_values (struct objfile *);
821 extern struct value *value_copy (struct value *);
823 extern struct value *value_non_lval (struct value *);
825 extern void preserve_one_value (struct value *, struct objfile *, htab_t);
829 extern struct value *varying_to_slice (struct value *);
831 extern struct value *value_slice (struct value *, int, int);
833 extern struct value *value_literal_complex (struct value *, struct value *,
836 extern struct value *find_function_in_inferior (const char *,
839 extern struct value *value_allocate_space_in_inferior (int);
841 extern struct value *value_subscripted_rvalue (struct value *array,
842 LONGEST index, int lowerbound);
844 /* User function handler. */
846 typedef struct value *(*internal_function_fn) (struct gdbarch *gdbarch,
847 const struct language_defn *language,
850 struct value **argv);
852 void add_internal_function (const char *name, const char *doc,
853 internal_function_fn handler,
856 struct value *call_internal_function (struct gdbarch *gdbarch,
857 const struct language_defn *language,
858 struct value *function,
859 int argc, struct value **argv);
861 char *value_internal_function_name (struct value *);
863 #endif /* !defined (VALUE_H) */