1 /* Definitions for values of C expressions, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #if !defined (VALUE_H)
26 #include "frame.h" /* For struct frame_id. */
35 struct value_print_options
;
37 /* The structure which defines the type of a value. It should never
38 be possible for a program lval value to survive over a call to the
39 inferior (i.e. to be put into the history list or an internal
44 /* Values are stored in a chain, so that they can be deleted easily
45 over calls to the inferior. Values assigned to internal variables,
46 put into the value history or exposed to Python are taken off this
49 struct value
*value_next (struct value
*);
51 /* Type of the value. */
53 extern struct type
*value_type (const struct value
*);
55 /* This is being used to change the type of an existing value, that
56 code should instead be creating a new value with the changed type
57 (but possibly shared content). */
59 extern void deprecated_set_value_type (struct value
*value
,
62 /* Only used for bitfields; number of bits contained in them. */
64 extern int value_bitsize (const struct value
*);
65 extern void set_value_bitsize (struct value
*, int bit
);
67 /* Only used for bitfields; position of start of field. For
68 gdbarch_bits_big_endian=0 targets, it is the position of the LSB. For
69 gdbarch_bits_big_endian=1 targets, it is the position of the MSB. */
71 extern int value_bitpos (const struct value
*);
72 extern void set_value_bitpos (struct value
*, int bit
);
74 /* Only used for bitfields; the containing value. This allows a
75 single read from the target when displaying multiple
78 struct value
*value_parent (struct value
*);
80 /* Describes offset of a value within lval of a structure in bytes.
81 If lval == lval_memory, this is an offset to the address. If lval
82 == lval_register, this is a further offset from location.address
83 within the registers structure. Note also the member
84 embedded_offset below. */
86 extern int value_offset (const struct value
*);
87 extern void set_value_offset (struct value
*, int offset
);
89 /* The comment from "struct value" reads: ``Is it modifiable? Only
90 relevant if lval != not_lval.''. Shouldn't the value instead be
91 not_lval and be done with it? */
93 extern int deprecated_value_modifiable (struct value
*value
);
94 extern void deprecated_set_value_modifiable (struct value
*value
,
97 /* If a value represents a C++ object, then the `type' field gives the
98 object's compile-time type. If the object actually belongs to some
99 class derived from `type', perhaps with other base classes and
100 additional members, then `type' is just a subobject of the real
101 thing, and the full object is probably larger than `type' would
104 If `type' is a dynamic class (i.e. one with a vtable), then GDB can
105 actually determine the object's run-time type by looking at the
106 run-time type information in the vtable. When this information is
107 available, we may elect to read in the entire object, for several
110 - When printing the value, the user would probably rather see the
111 full object, not just the limited portion apparent from the
114 - If `type' has virtual base classes, then even printing `type'
115 alone may require reaching outside the `type' portion of the
116 object to wherever the virtual base class has been stored.
118 When we store the entire object, `enclosing_type' is the run-time
119 type -- the complete object -- and `embedded_offset' is the offset
120 of `type' within that larger type, in bytes. The value_contents()
121 macro takes `embedded_offset' into account, so most GDB code
122 continues to see the `type' portion of the value, just as the
125 If `type' is a pointer to an object, then `enclosing_type' is a
126 pointer to the object's run-time type, and `pointed_to_offset' is
127 the offset in bytes from the full object to the pointed-to object
128 -- that is, the value `embedded_offset' would have if we followed
129 the pointer and fetched the complete object. (I don't really see
130 the point. Why not just determine the run-time type when you
131 indirect, and avoid the special case? The contents don't matter
132 until you indirect anyway.)
134 If we're not doing anything fancy, `enclosing_type' is equal to
135 `type', and `embedded_offset' is zero, so everything works
138 extern struct type
*value_enclosing_type (struct value
*);
139 extern void set_value_enclosing_type (struct value
*val
,
140 struct type
*new_type
);
142 extern int value_pointed_to_offset (struct value
*value
);
143 extern void set_value_pointed_to_offset (struct value
*value
, int val
);
144 extern int value_embedded_offset (struct value
*value
);
145 extern void set_value_embedded_offset (struct value
*value
, int val
);
147 /* For lval_computed values, this structure holds functions used to
148 retrieve and set the value (or portions of the value).
150 For each function, 'V' is the 'this' pointer: an lval_funcs
151 function F may always assume that the V it receives is an
152 lval_computed value, and has F in the appropriate slot of its
153 lval_funcs structure. */
157 /* Fill in VALUE's contents. This is used to "un-lazy" values. If
158 a problem arises in obtaining VALUE's bits, this function should
160 void (*read
) (struct value
*v
);
162 /* Handle an assignment TOVAL = FROMVAL by writing the value of
163 FROMVAL to TOVAL's location. The contents of TOVAL have not yet
164 been updated. If a problem arises in doing so, this function
165 should call 'error'. */
166 void (*write
) (struct value
*toval
, struct value
*fromval
);
168 /* Check the validity of some bits in VALUE. This should return 1
169 if all the bits starting at OFFSET and extending for LENGTH bits
170 are valid, or 0 if any bit is invalid. */
171 int (*check_validity
) (const struct value
*value
, int offset
, int length
);
173 /* Return 1 if any bit in VALUE is valid, 0 if they are all invalid. */
174 int (*check_any_valid
) (const struct value
*value
);
176 /* If non-NULL, this is used to implement pointer indirection for
177 this value. This method may return NULL, in which case value_ind
178 will fall back to ordinary indirection. */
179 struct value
*(*indirect
) (struct value
*value
);
181 /* If non-NULL, this is used to determine whether the indicated bits
182 of VALUE are a synthetic pointer. */
183 int (*check_synthetic_pointer
) (const struct value
*value
,
184 int offset
, int length
);
186 /* Return a duplicate of VALUE's closure, for use in a new value.
187 This may simply return the same closure, if VALUE's is
188 reference-counted or statically allocated.
190 This may be NULL, in which case VALUE's closure is re-used in the
192 void *(*copy_closure
) (const struct value
*v
);
194 /* Drop VALUE's reference to its closure. Maybe this frees the
195 closure; maybe this decrements a reference count; maybe the
196 closure is statically allocated and this does nothing.
198 This may be NULL, in which case no action is taken to free
200 void (*free_closure
) (struct value
*v
);
203 /* Create a computed lvalue, with type TYPE, function pointers FUNCS,
204 and closure CLOSURE. */
206 extern struct value
*allocate_computed_value (struct type
*type
,
207 struct lval_funcs
*funcs
,
210 /* If VALUE is lval_computed, return its lval_funcs structure. */
212 extern struct lval_funcs
*value_computed_funcs (struct value
*value
);
214 /* If VALUE is lval_computed, return its closure. The meaning of the
215 returned value depends on the functions VALUE uses. */
217 extern void *value_computed_closure (const struct value
*value
);
219 /* If zero, contents of this value are in the contents field. If
220 nonzero, contents are in inferior. If the lval field is lval_memory,
221 the contents are in inferior memory at location.address plus offset.
222 The lval field may also be lval_register.
224 WARNING: This field is used by the code which handles watchpoints
225 (see breakpoint.c) to decide whether a particular value can be
226 watched by hardware watchpoints. If the lazy flag is set for some
227 member of a value chain, it is assumed that this member of the
228 chain doesn't need to be watched as part of watching the value
229 itself. This is how GDB avoids watching the entire struct or array
230 when the user wants to watch a single struct member or array
231 element. If you ever change the way lazy flag is set and reset, be
232 sure to consider this use as well! */
234 extern int value_lazy (struct value
*);
235 extern void set_value_lazy (struct value
*value
, int val
);
237 extern int value_stack (struct value
*);
238 extern void set_value_stack (struct value
*value
, int val
);
240 /* value_contents() and value_contents_raw() both return the address
241 of the gdb buffer used to hold a copy of the contents of the lval.
242 value_contents() is used when the contents of the buffer are needed
243 -- it uses value_fetch_lazy() to load the buffer from the process
244 being debugged if it hasn't already been loaded
245 (value_contents_writeable() is used when a writeable but fetched
246 buffer is required).. value_contents_raw() is used when data is
247 being stored into the buffer, or when it is certain that the
248 contents of the buffer are valid.
250 Note: The contents pointer is adjusted by the offset required to
251 get to the real subobject, if the value happens to represent
252 something embedded in a larger run-time object. */
254 extern gdb_byte
*value_contents_raw (struct value
*);
256 /* Actual contents of the value. For use of this value; setting it
257 uses the stuff above. Not valid if lazy is nonzero. Target
258 byte-order. We force it to be aligned properly for any possible
259 value. Note that a value therefore extends beyond what is
262 extern const gdb_byte
*value_contents (struct value
*);
263 extern gdb_byte
*value_contents_writeable (struct value
*);
265 /* The ALL variants of the above two macros do not adjust the returned
266 pointer by the embedded_offset value. */
268 extern gdb_byte
*value_contents_all_raw (struct value
*);
269 extern const gdb_byte
*value_contents_all (struct value
*);
271 /* Like value_contents_all, but does not require that the returned
272 bits be valid. This should only be used in situations where you
273 plan to check the validity manually. */
274 extern const gdb_byte
*value_contents_for_printing (struct value
*value
);
276 /* Like value_contents_for_printing, but accepts a constant value
277 pointer. Unlike value_contents_for_printing however, the pointed
278 value must _not_ be lazy. */
279 extern const gdb_byte
*
280 value_contents_for_printing_const (const struct value
*value
);
282 extern int value_fetch_lazy (struct value
*val
);
283 extern int value_contents_equal (struct value
*val1
, struct value
*val2
);
285 /* If nonzero, this is the value of a variable which does not actually
286 exist in the program. */
287 extern int value_optimized_out (struct value
*value
);
288 extern void set_value_optimized_out (struct value
*value
, int val
);
290 /* Like value_optimized_out, but return false if any bit in the object
292 extern int value_entirely_optimized_out (const struct value
*value
);
294 /* Set or return field indicating whether a variable is initialized or
295 not, based on debugging information supplied by the compiler.
296 1 = initialized; 0 = uninitialized. */
297 extern int value_initialized (struct value
*);
298 extern void set_value_initialized (struct value
*, int);
300 /* Set COMPONENT's location as appropriate for a component of WHOLE
301 --- regardless of what kind of lvalue WHOLE is. */
302 extern void set_value_component_location (struct value
*component
,
303 const struct value
*whole
);
305 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
306 single value might have multiple LVALs), this hacked interface is
307 limited to just the first PIECE. Expect further change. */
308 /* Type of value; either not an lval, or one of the various different
309 possible kinds of lval. */
310 extern enum lval_type
*deprecated_value_lval_hack (struct value
*);
311 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
313 /* If lval == lval_memory, return the address in the inferior. If
314 lval == lval_register, return the byte offset into the registers
315 structure. Otherwise, return 0. The returned address
316 includes the offset, if any. */
317 extern CORE_ADDR
value_address (const struct value
*);
319 /* Like value_address, except the result does not include value's
321 extern CORE_ADDR
value_raw_address (struct value
*);
323 /* Set the address of a value. */
324 extern void set_value_address (struct value
*, CORE_ADDR
);
326 /* Pointer to internal variable. */
327 extern struct internalvar
**deprecated_value_internalvar_hack (struct value
*);
328 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
330 /* Frame register value is relative to. This will be described in the
331 lval enum above as "lval_register". */
332 extern struct frame_id
*deprecated_value_frame_id_hack (struct value
*);
333 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
335 /* Register number if the value is from a register. */
336 extern short *deprecated_value_regnum_hack (struct value
*);
337 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
339 /* Convert a REF to the object referenced. */
341 extern struct value
*coerce_ref (struct value
*value
);
343 /* If ARG is an array, convert it to a pointer.
344 If ARG is a function, convert it to a function pointer.
346 References are dereferenced. */
348 extern struct value
*coerce_array (struct value
*value
);
350 /* Given a value, determine whether the bits starting at OFFSET and
351 extending for LENGTH bits are valid. This returns nonzero if all
352 bits in the given range are valid, zero if any bit is invalid. */
354 extern int value_bits_valid (const struct value
*value
,
355 int offset
, int length
);
357 /* Given a value, determine whether the bits starting at OFFSET and
358 extending for LENGTH bits are a synthetic pointer. */
360 extern int value_bits_synthetic_pointer (const struct value
*value
,
361 int offset
, int length
);
363 /* Given a value, determine whether the contents bytes starting at
364 OFFSET and extending for LENGTH bytes are available. This returns
365 nonzero if all bytes in the given range are available, zero if any
366 byte is unavailable. */
368 extern int value_bytes_available (const struct value
*value
,
369 int offset
, int length
);
371 /* Mark VALUE's content bytes starting at OFFSET and extending for
372 LENGTH bytes as unavailable. */
374 extern void mark_value_bytes_unavailable (struct value
*value
,
375 int offset
, int length
);
377 /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
378 LENGTH bytes of VAL2's contents starting at OFFSET2. Returns true
379 iff the set of available contents match. Unavailable contents
380 compare equal with unavailable contents, and different with any
381 available byte. For example, if 'x's represent an unavailable
382 byte, and 'V' and 'Z' represent different available bytes, in a
383 value with length 16:
386 contents: xxxxVVVVxxxxVVZZ
390 value_available_contents_eq(val, 0, val, 8, 6) => 1
391 value_available_contents_eq(val, 0, val, 4, 4) => 1
392 value_available_contents_eq(val, 0, val, 8, 8) => 0
393 value_available_contents_eq(val, 4, val, 12, 2) => 1
394 value_available_contents_eq(val, 4, val, 12, 4) => 0
395 value_available_contents_eq(val, 3, val, 4, 4) => 0
398 extern int value_available_contents_eq (const struct value
*val1
, int offset1
,
399 const struct value
*val2
, int offset2
,
402 /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which
403 is (or will be copied to) VAL's contents buffer offset by
404 EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
405 Marks value contents ranges as unavailable if the corresponding
406 memory is likewise unavailable. STACK indicates whether the memory
407 is known to be stack memory. */
409 extern void read_value_memory (struct value
*val
, int offset
,
410 int stack
, CORE_ADDR memaddr
,
411 gdb_byte
*buffer
, size_t length
);
416 #include "gdbtypes.h"
417 #include "expression.h"
422 extern void print_address_demangle (struct gdbarch
*, CORE_ADDR
,
423 struct ui_file
*, int);
425 extern LONGEST
value_as_long (struct value
*val
);
426 extern DOUBLEST
value_as_double (struct value
*val
);
427 extern CORE_ADDR
value_as_address (struct value
*val
);
429 extern LONGEST
unpack_long (struct type
*type
, const gdb_byte
*valaddr
);
430 extern DOUBLEST
unpack_double (struct type
*type
, const gdb_byte
*valaddr
,
432 extern CORE_ADDR
unpack_pointer (struct type
*type
, const gdb_byte
*valaddr
);
434 extern int unpack_value_bits_as_long (struct type
*field_type
,
435 const gdb_byte
*valaddr
,
436 int embedded_offset
, int bitpos
,
438 const struct value
*original_value
,
441 extern LONGEST
unpack_field_as_long (struct type
*type
,
442 const gdb_byte
*valaddr
,
444 extern int unpack_value_field_as_long (struct type
*type
, const gdb_byte
*valaddr
,
445 int embedded_offset
, int fieldno
,
446 const struct value
*val
, LONGEST
*result
);
448 extern struct value
*value_field_bitfield (struct type
*type
, int fieldno
,
449 const gdb_byte
*valaddr
,
451 const struct value
*val
);
453 extern void pack_long (gdb_byte
*buf
, struct type
*type
, LONGEST num
);
455 extern struct value
*value_from_longest (struct type
*type
, LONGEST num
);
456 extern struct value
*value_from_ulongest (struct type
*type
, ULONGEST num
);
457 extern struct value
*value_from_pointer (struct type
*type
, CORE_ADDR addr
);
458 extern struct value
*value_from_double (struct type
*type
, DOUBLEST num
);
459 extern struct value
*value_from_decfloat (struct type
*type
,
460 const gdb_byte
*decbytes
);
462 extern struct value
*value_at (struct type
*type
, CORE_ADDR addr
);
463 extern struct value
*value_at_lazy (struct type
*type
, CORE_ADDR addr
);
465 extern struct value
*value_from_contents_and_address (struct type
*,
469 extern struct value
*default_value_from_register (struct type
*type
,
471 struct frame_info
*frame
);
473 extern struct value
*value_from_register (struct type
*type
, int regnum
,
474 struct frame_info
*frame
);
476 extern CORE_ADDR
address_from_register (struct type
*type
, int regnum
,
477 struct frame_info
*frame
);
479 extern struct value
*value_of_variable (struct symbol
*var
, struct block
*b
);
481 extern struct value
*address_of_variable (struct symbol
*var
, struct block
*b
);
483 extern struct value
*value_of_register (int regnum
, struct frame_info
*frame
);
485 struct value
*value_of_register_lazy (struct frame_info
*frame
, int regnum
);
487 extern int symbol_read_needs_frame (struct symbol
*);
489 extern struct value
*read_var_value (struct symbol
*var
,
490 struct frame_info
*frame
);
492 extern struct value
*allocate_value (struct type
*type
);
493 extern struct value
*allocate_value_lazy (struct type
*type
);
494 extern void allocate_value_contents (struct value
*value
);
496 extern struct value
*allocate_repeat_value (struct type
*type
, int count
);
498 extern struct value
*value_mark (void);
500 extern void value_free_to_mark (struct value
*mark
);
502 extern struct value
*value_cstring (char *ptr
, int len
,
503 struct type
*char_type
);
504 extern struct value
*value_string (char *ptr
, int len
,
505 struct type
*char_type
);
506 extern struct value
*value_bitstring (char *ptr
, int len
,
507 struct type
*index_type
);
509 extern struct value
*value_array (int lowbound
, int highbound
,
510 struct value
**elemvec
);
512 extern struct value
*value_concat (struct value
*arg1
, struct value
*arg2
);
514 extern struct value
*value_binop (struct value
*arg1
, struct value
*arg2
,
517 extern struct value
*value_ptradd (struct value
*arg1
, LONGEST arg2
);
519 extern LONGEST
value_ptrdiff (struct value
*arg1
, struct value
*arg2
);
521 extern int value_must_coerce_to_target (struct value
*arg1
);
523 extern struct value
*value_coerce_to_target (struct value
*arg1
);
525 extern struct value
*value_coerce_array (struct value
*arg1
);
527 extern struct value
*value_coerce_function (struct value
*arg1
);
529 extern struct value
*value_ind (struct value
*arg1
);
531 extern struct value
*value_addr (struct value
*arg1
);
533 extern struct value
*value_ref (struct value
*arg1
);
535 extern struct value
*value_assign (struct value
*toval
,
536 struct value
*fromval
);
538 extern struct value
*value_pos (struct value
*arg1
);
540 extern struct value
*value_neg (struct value
*arg1
);
542 extern struct value
*value_complement (struct value
*arg1
);
544 extern struct value
*value_struct_elt (struct value
**argp
,
546 const char *name
, int *static_memfuncp
,
549 extern struct value
*value_aggregate_elt (struct type
*curtype
,
551 struct type
*expect_type
,
555 extern struct value
*value_static_field (struct type
*type
, int fieldno
);
557 extern struct fn_field
*value_find_oload_method_list (struct value
**,
560 struct type
**, int *);
562 enum oload_search_type
{ NON_METHOD
, METHOD
, BOTH
};
564 extern int find_overload_match (struct type
**arg_types
, int nargs
,
566 enum oload_search_type method
, int lax
,
567 struct value
**objp
, struct symbol
*fsym
,
568 struct value
**valp
, struct symbol
**symp
,
569 int *staticp
, const int no_adl
);
571 extern struct value
*value_field (struct value
*arg1
, int fieldno
);
573 extern struct value
*value_primitive_field (struct value
*arg1
, int offset
,
575 struct type
*arg_type
);
578 extern struct type
*value_rtti_target_type (struct value
*, int *, int *,
581 extern struct value
*value_full_object (struct value
*, struct type
*, int,
584 extern struct value
*value_cast_pointers (struct type
*, struct value
*);
586 extern struct value
*value_cast (struct type
*type
, struct value
*arg2
);
588 extern struct value
*value_reinterpret_cast (struct type
*type
,
591 extern struct value
*value_dynamic_cast (struct type
*type
, struct value
*arg
);
593 extern struct value
*value_zero (struct type
*type
, enum lval_type lv
);
595 extern struct value
*value_one (struct type
*type
, enum lval_type lv
);
597 extern struct value
*value_repeat (struct value
*arg1
, int count
);
599 extern struct value
*value_subscript (struct value
*array
, LONGEST index
);
601 extern struct value
*value_bitstring_subscript (struct type
*type
,
602 struct value
*bitstring
,
605 extern struct value
*register_value_being_returned (struct type
*valtype
,
606 struct regcache
*retbuf
);
608 extern int value_in (struct value
*element
, struct value
*set
);
610 extern int value_bit_index (struct type
*type
, const gdb_byte
*addr
,
613 extern int using_struct_return (struct gdbarch
*gdbarch
,
614 struct type
*func_type
,
615 struct type
*value_type
);
617 extern struct value
*evaluate_expression (struct expression
*exp
);
619 extern struct value
*evaluate_type (struct expression
*exp
);
621 extern struct value
*evaluate_subexp (struct type
*expect_type
,
622 struct expression
*exp
,
623 int *pos
, enum noside noside
);
625 extern struct value
*evaluate_subexpression_type (struct expression
*exp
,
628 extern void fetch_subexp_value (struct expression
*exp
, int *pc
,
629 struct value
**valp
, struct value
**resultp
,
630 struct value
**val_chain
);
632 extern char *extract_field_op (struct expression
*exp
, int *subexp
);
634 extern struct value
*evaluate_subexp_with_coercion (struct expression
*,
637 extern struct value
*parse_and_eval (char *exp
);
639 extern struct value
*parse_to_comma_and_eval (char **expp
);
641 extern struct type
*parse_and_eval_type (char *p
, int length
);
643 extern CORE_ADDR
parse_and_eval_address (char *exp
);
645 extern CORE_ADDR
parse_and_eval_address_1 (char **expptr
);
647 extern LONGEST
parse_and_eval_long (char *exp
);
649 extern void unop_promote (const struct language_defn
*language
,
650 struct gdbarch
*gdbarch
,
651 struct value
**arg1
);
653 extern void binop_promote (const struct language_defn
*language
,
654 struct gdbarch
*gdbarch
,
655 struct value
**arg1
, struct value
**arg2
);
657 extern struct value
*access_value_history (int num
);
659 extern struct value
*value_of_internalvar (struct gdbarch
*gdbarch
,
660 struct internalvar
*var
);
662 extern int get_internalvar_integer (struct internalvar
*var
, LONGEST
*l
);
664 extern void set_internalvar (struct internalvar
*var
, struct value
*val
);
666 extern void set_internalvar_integer (struct internalvar
*var
, LONGEST l
);
668 extern void set_internalvar_string (struct internalvar
*var
,
671 extern void clear_internalvar (struct internalvar
*var
);
673 extern void set_internalvar_component (struct internalvar
*var
,
675 int bitpos
, int bitsize
,
676 struct value
*newvalue
);
678 extern struct internalvar
*lookup_only_internalvar (const char *name
);
680 extern struct internalvar
*create_internalvar (const char *name
);
682 typedef struct value
* (*internalvar_make_value
) (struct gdbarch
*,
683 struct internalvar
*);
684 extern struct internalvar
*
685 create_internalvar_type_lazy (char *name
, internalvar_make_value fun
);
687 extern struct internalvar
*lookup_internalvar (const char *name
);
689 extern int value_equal (struct value
*arg1
, struct value
*arg2
);
691 extern int value_equal_contents (struct value
*arg1
, struct value
*arg2
);
693 extern int value_less (struct value
*arg1
, struct value
*arg2
);
695 extern int value_logical_not (struct value
*arg1
);
699 extern struct value
*value_of_this (int complain
);
701 extern struct value
*value_x_binop (struct value
*arg1
, struct value
*arg2
,
703 enum exp_opcode otherop
,
706 extern struct value
*value_x_unop (struct value
*arg1
, enum exp_opcode op
,
709 extern struct value
*value_fn_field (struct value
**arg1p
, struct fn_field
*f
,
710 int j
, struct type
*type
, int offset
);
712 extern int binop_types_user_defined_p (enum exp_opcode op
,
716 extern int binop_user_defined_p (enum exp_opcode op
, struct value
*arg1
,
719 extern int unop_user_defined_p (enum exp_opcode op
, struct value
*arg1
);
721 extern int destructor_name_p (const char *name
, const struct type
*type
);
723 extern void value_incref (struct value
*val
);
725 extern void value_free (struct value
*val
);
727 extern void free_all_values (void);
729 extern void free_value_chain (struct value
*v
);
731 extern void release_value (struct value
*val
);
733 extern int record_latest_value (struct value
*val
);
735 extern void modify_field (struct type
*type
, gdb_byte
*addr
,
736 LONGEST fieldval
, int bitpos
, int bitsize
);
738 extern void type_print (struct type
*type
, char *varstring
,
739 struct ui_file
*stream
, int show
);
741 extern char *type_to_string (struct type
*type
);
743 extern gdb_byte
*baseclass_addr (struct type
*type
, int index
,
745 struct value
**valuep
, int *errp
);
747 extern void print_longest (struct ui_file
*stream
, int format
,
748 int use_local
, LONGEST val
);
750 extern void print_floating (const gdb_byte
*valaddr
, struct type
*type
,
751 struct ui_file
*stream
);
753 extern void print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
754 struct ui_file
*stream
);
756 extern int value_print (struct value
*val
, struct ui_file
*stream
,
757 const struct value_print_options
*options
);
759 extern void value_print_array_elements (struct value
*val
,
760 struct ui_file
*stream
, int format
,
761 enum val_prettyprint pretty
);
763 extern struct value
*value_release_to_mark (struct value
*mark
);
765 extern int val_print (struct type
*type
, const gdb_byte
*valaddr
,
766 int embedded_offset
, CORE_ADDR address
,
767 struct ui_file
*stream
, int recurse
,
768 const struct value
*val
,
769 const struct value_print_options
*options
,
770 const struct language_defn
*language
);
772 extern int common_val_print (struct value
*val
,
773 struct ui_file
*stream
, int recurse
,
774 const struct value_print_options
*options
,
775 const struct language_defn
*language
);
777 extern int val_print_string (struct type
*elttype
, const char *encoding
,
778 CORE_ADDR addr
, int len
,
779 struct ui_file
*stream
,
780 const struct value_print_options
*options
);
782 extern void print_variable_and_value (const char *name
,
784 struct frame_info
*frame
,
785 struct ui_file
*stream
,
788 extern int check_field (struct type
*, const char *);
790 extern void typedef_print (struct type
*type
, struct symbol
*news
,
791 struct ui_file
*stream
);
793 extern char *internalvar_name (struct internalvar
*var
);
795 extern void preserve_values (struct objfile
*);
799 extern struct value
*value_copy (struct value
*);
801 extern struct value
*value_non_lval (struct value
*);
803 extern void preserve_one_value (struct value
*, struct objfile
*, htab_t
);
807 extern struct value
*varying_to_slice (struct value
*);
809 extern struct value
*value_slice (struct value
*, int, int);
811 extern struct value
*value_literal_complex (struct value
*, struct value
*,
814 extern struct value
*find_function_in_inferior (const char *,
817 extern struct value
*value_allocate_space_in_inferior (int);
819 extern struct value
*value_of_local (const char *name
, int complain
);
821 extern struct value
*value_subscripted_rvalue (struct value
*array
,
822 LONGEST index
, int lowerbound
);
824 /* User function handler. */
826 typedef struct value
*(*internal_function_fn
) (struct gdbarch
*gdbarch
,
827 const struct language_defn
*language
,
830 struct value
**argv
);
832 void add_internal_function (const char *name
, const char *doc
,
833 internal_function_fn handler
,
836 struct value
*call_internal_function (struct gdbarch
*gdbarch
,
837 const struct language_defn
*language
,
838 struct value
*function
,
839 int argc
, struct value
**argv
);
841 char *value_internal_function_name (struct value
*);
843 #endif /* !defined (VALUE_H) */