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
159 call 'error'. If it is NULL value_fetch_lazy on "un-lazy"
160 non-optimized-out value is an internal error. */
161 void (*read
) (struct value
*v
);
163 /* Handle an assignment TOVAL = FROMVAL by writing the value of
164 FROMVAL to TOVAL's location. The contents of TOVAL have not yet
165 been updated. If a problem arises in doing so, this function
166 should call 'error'. If it is NULL such TOVAL assignment is an error as
167 TOVAL is not considered as an lvalue. */
168 void (*write
) (struct value
*toval
, struct value
*fromval
);
170 /* Check the validity of some bits in VALUE. This should return 1
171 if all the bits starting at OFFSET and extending for LENGTH bits
172 are valid, or 0 if any bit is invalid. */
173 int (*check_validity
) (const struct value
*value
, int offset
, int length
);
175 /* Return 1 if any bit in VALUE is valid, 0 if they are all invalid. */
176 int (*check_any_valid
) (const struct value
*value
);
178 /* If non-NULL, this is used to implement pointer indirection for
179 this value. This method may return NULL, in which case value_ind
180 will fall back to ordinary indirection. */
181 struct value
*(*indirect
) (struct value
*value
);
183 /* If non-NULL, this is used to determine whether the indicated bits
184 of VALUE are a synthetic pointer. */
185 int (*check_synthetic_pointer
) (const struct value
*value
,
186 int offset
, int length
);
188 /* Return a duplicate of VALUE's closure, for use in a new value.
189 This may simply return the same closure, if VALUE's is
190 reference-counted or statically allocated.
192 This may be NULL, in which case VALUE's closure is re-used in the
194 void *(*copy_closure
) (const struct value
*v
);
196 /* Drop VALUE's reference to its closure. Maybe this frees the
197 closure; maybe this decrements a reference count; maybe the
198 closure is statically allocated and this does nothing.
200 This may be NULL, in which case no action is taken to free
202 void (*free_closure
) (struct value
*v
);
205 /* Create a computed lvalue, with type TYPE, function pointers FUNCS,
206 and closure CLOSURE. */
208 extern struct value
*allocate_computed_value (struct type
*type
,
209 const struct lval_funcs
*funcs
,
212 extern struct value
*allocate_optimized_out_value (struct type
*type
);
214 /* If VALUE is lval_computed, return its lval_funcs structure. */
216 extern const struct lval_funcs
*value_computed_funcs (struct value
*value
);
218 /* If VALUE is lval_computed, return its closure. The meaning of the
219 returned value depends on the functions VALUE uses. */
221 extern void *value_computed_closure (const struct value
*value
);
223 /* If zero, contents of this value are in the contents field. If
224 nonzero, contents are in inferior. If the lval field is lval_memory,
225 the contents are in inferior memory at location.address plus offset.
226 The lval field may also be lval_register.
228 WARNING: This field is used by the code which handles watchpoints
229 (see breakpoint.c) to decide whether a particular value can be
230 watched by hardware watchpoints. If the lazy flag is set for some
231 member of a value chain, it is assumed that this member of the
232 chain doesn't need to be watched as part of watching the value
233 itself. This is how GDB avoids watching the entire struct or array
234 when the user wants to watch a single struct member or array
235 element. If you ever change the way lazy flag is set and reset, be
236 sure to consider this use as well! */
238 extern int value_lazy (struct value
*);
239 extern void set_value_lazy (struct value
*value
, int val
);
241 extern int value_stack (struct value
*);
242 extern void set_value_stack (struct value
*value
, int val
);
244 /* value_contents() and value_contents_raw() both return the address
245 of the gdb buffer used to hold a copy of the contents of the lval.
246 value_contents() is used when the contents of the buffer are needed
247 -- it uses value_fetch_lazy() to load the buffer from the process
248 being debugged if it hasn't already been loaded
249 (value_contents_writeable() is used when a writeable but fetched
250 buffer is required).. value_contents_raw() is used when data is
251 being stored into the buffer, or when it is certain that the
252 contents of the buffer are valid.
254 Note: The contents pointer is adjusted by the offset required to
255 get to the real subobject, if the value happens to represent
256 something embedded in a larger run-time object. */
258 extern gdb_byte
*value_contents_raw (struct value
*);
260 /* Actual contents of the value. For use of this value; setting it
261 uses the stuff above. Not valid if lazy is nonzero. Target
262 byte-order. We force it to be aligned properly for any possible
263 value. Note that a value therefore extends beyond what is
266 extern const gdb_byte
*value_contents (struct value
*);
267 extern gdb_byte
*value_contents_writeable (struct value
*);
269 /* The ALL variants of the above two macros do not adjust the returned
270 pointer by the embedded_offset value. */
272 extern gdb_byte
*value_contents_all_raw (struct value
*);
273 extern const gdb_byte
*value_contents_all (struct value
*);
275 /* Like value_contents_all, but does not require that the returned
276 bits be valid. This should only be used in situations where you
277 plan to check the validity manually. */
278 extern const gdb_byte
*value_contents_for_printing (struct value
*value
);
280 /* Like value_contents_for_printing, but accepts a constant value
281 pointer. Unlike value_contents_for_printing however, the pointed
282 value must _not_ be lazy. */
283 extern const gdb_byte
*
284 value_contents_for_printing_const (const struct value
*value
);
286 extern int value_fetch_lazy (struct value
*val
);
287 extern int value_contents_equal (struct value
*val1
, struct value
*val2
);
289 /* If nonzero, this is the value of a variable which does not actually
290 exist in the program. */
291 extern int value_optimized_out (struct value
*value
);
292 extern void set_value_optimized_out (struct value
*value
, int val
);
294 /* Like value_optimized_out, but return false if any bit in the object
296 extern int value_entirely_optimized_out (const struct value
*value
);
298 /* Set or return field indicating whether a variable is initialized or
299 not, based on debugging information supplied by the compiler.
300 1 = initialized; 0 = uninitialized. */
301 extern int value_initialized (struct value
*);
302 extern void set_value_initialized (struct value
*, int);
304 /* Set COMPONENT's location as appropriate for a component of WHOLE
305 --- regardless of what kind of lvalue WHOLE is. */
306 extern void set_value_component_location (struct value
*component
,
307 const struct value
*whole
);
309 /* While the following fields are per- VALUE .CONTENT .PIECE (i.e., a
310 single value might have multiple LVALs), this hacked interface is
311 limited to just the first PIECE. Expect further change. */
312 /* Type of value; either not an lval, or one of the various different
313 possible kinds of lval. */
314 extern enum lval_type
*deprecated_value_lval_hack (struct value
*);
315 #define VALUE_LVAL(val) (*deprecated_value_lval_hack (val))
317 /* If lval == lval_memory, return the address in the inferior. If
318 lval == lval_register, return the byte offset into the registers
319 structure. Otherwise, return 0. The returned address
320 includes the offset, if any. */
321 extern CORE_ADDR
value_address (const struct value
*);
323 /* Like value_address, except the result does not include value's
325 extern CORE_ADDR
value_raw_address (struct value
*);
327 /* Set the address of a value. */
328 extern void set_value_address (struct value
*, CORE_ADDR
);
330 /* Pointer to internal variable. */
331 extern struct internalvar
**deprecated_value_internalvar_hack (struct value
*);
332 #define VALUE_INTERNALVAR(val) (*deprecated_value_internalvar_hack (val))
334 /* Frame register value is relative to. This will be described in the
335 lval enum above as "lval_register". */
336 extern struct frame_id
*deprecated_value_frame_id_hack (struct value
*);
337 #define VALUE_FRAME_ID(val) (*deprecated_value_frame_id_hack (val))
339 /* Register number if the value is from a register. */
340 extern short *deprecated_value_regnum_hack (struct value
*);
341 #define VALUE_REGNUM(val) (*deprecated_value_regnum_hack (val))
343 /* Convert a REF to the object referenced. */
345 extern struct value
*coerce_ref (struct value
*value
);
347 /* If ARG is an array, convert it to a pointer.
348 If ARG is a function, convert it to a function pointer.
350 References are dereferenced. */
352 extern struct value
*coerce_array (struct value
*value
);
354 /* Given a value, determine whether the bits starting at OFFSET and
355 extending for LENGTH bits are valid. This returns nonzero if all
356 bits in the given range are valid, zero if any bit is invalid. */
358 extern int value_bits_valid (const struct value
*value
,
359 int offset
, int length
);
361 /* Given a value, determine whether the bits starting at OFFSET and
362 extending for LENGTH bits are a synthetic pointer. */
364 extern int value_bits_synthetic_pointer (const struct value
*value
,
365 int offset
, int length
);
367 /* Given a value, determine whether the contents bytes starting at
368 OFFSET and extending for LENGTH bytes are available. This returns
369 nonzero if all bytes in the given range are available, zero if any
370 byte is unavailable. */
372 extern int value_bytes_available (const struct value
*value
,
373 int offset
, int length
);
375 /* Like value_bytes_available, but return false if any byte in the
376 whole object is unavailable. */
377 extern int value_entirely_available (struct value
*value
);
379 /* Mark VALUE's content bytes starting at OFFSET and extending for
380 LENGTH bytes as unavailable. */
382 extern void mark_value_bytes_unavailable (struct value
*value
,
383 int offset
, int length
);
385 /* Compare LENGTH bytes of VAL1's contents starting at OFFSET1 with
386 LENGTH bytes of VAL2's contents starting at OFFSET2.
388 Note that "contents" refers to the whole value's contents
389 (value_contents_all), without any embedded offset adjustment. For
390 example, to compare a complete object value with itself, including
391 its enclosing type chunk, you'd do:
393 int len = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
394 value_available_contents (val, 0, val, 0, len);
396 Returns true iff the set of available contents match. Unavailable
397 contents compare equal with unavailable contents, and different
398 with any available byte. For example, if 'x's represent an
399 unavailable byte, and 'V' and 'Z' represent different available
400 bytes, in a value with length 16:
403 contents: xxxxVVVVxxxxVVZZ
407 value_available_contents_eq(val, 0, val, 8, 6) => 1
408 value_available_contents_eq(val, 0, val, 4, 4) => 1
409 value_available_contents_eq(val, 0, val, 8, 8) => 0
410 value_available_contents_eq(val, 4, val, 12, 2) => 1
411 value_available_contents_eq(val, 4, val, 12, 4) => 0
412 value_available_contents_eq(val, 3, val, 4, 4) => 0
415 extern int value_available_contents_eq (const struct value
*val1
, int offset1
,
416 const struct value
*val2
, int offset2
,
419 /* Read LENGTH bytes of memory starting at MEMADDR into BUFFER, which
420 is (or will be copied to) VAL's contents buffer offset by
421 EMBEDDED_OFFSET (that is, to &VAL->contents[EMBEDDED_OFFSET]).
422 Marks value contents ranges as unavailable if the corresponding
423 memory is likewise unavailable. STACK indicates whether the memory
424 is known to be stack memory. */
426 extern void read_value_memory (struct value
*val
, int embedded_offset
,
427 int stack
, CORE_ADDR memaddr
,
428 gdb_byte
*buffer
, size_t length
);
433 #include "gdbtypes.h"
434 #include "expression.h"
439 extern void print_address_demangle (struct gdbarch
*, CORE_ADDR
,
440 struct ui_file
*, int);
442 extern LONGEST
value_as_long (struct value
*val
);
443 extern DOUBLEST
value_as_double (struct value
*val
);
444 extern CORE_ADDR
value_as_address (struct value
*val
);
446 extern LONGEST
unpack_long (struct type
*type
, const gdb_byte
*valaddr
);
447 extern DOUBLEST
unpack_double (struct type
*type
, const gdb_byte
*valaddr
,
449 extern CORE_ADDR
unpack_pointer (struct type
*type
, const gdb_byte
*valaddr
);
451 extern int unpack_value_bits_as_long (struct type
*field_type
,
452 const gdb_byte
*valaddr
,
453 int embedded_offset
, int bitpos
,
455 const struct value
*original_value
,
458 extern LONGEST
unpack_field_as_long (struct type
*type
,
459 const gdb_byte
*valaddr
,
461 extern int unpack_value_field_as_long (struct type
*type
, const gdb_byte
*valaddr
,
462 int embedded_offset
, int fieldno
,
463 const struct value
*val
, LONGEST
*result
);
465 extern struct value
*value_field_bitfield (struct type
*type
, int fieldno
,
466 const gdb_byte
*valaddr
,
468 const struct value
*val
);
470 extern void pack_long (gdb_byte
*buf
, struct type
*type
, LONGEST num
);
472 extern struct value
*value_from_longest (struct type
*type
, LONGEST num
);
473 extern struct value
*value_from_ulongest (struct type
*type
, ULONGEST num
);
474 extern struct value
*value_from_pointer (struct type
*type
, CORE_ADDR addr
);
475 extern struct value
*value_from_double (struct type
*type
, DOUBLEST num
);
476 extern struct value
*value_from_decfloat (struct type
*type
,
477 const gdb_byte
*decbytes
);
478 extern struct value
*value_from_history_ref (char *, char **);
480 extern struct value
*value_at (struct type
*type
, CORE_ADDR addr
);
481 extern struct value
*value_at_lazy (struct type
*type
, CORE_ADDR addr
);
483 extern struct value
*value_from_contents_and_address (struct type
*,
486 extern struct value
*value_from_contents (struct type
*, const gdb_byte
*);
488 extern struct value
*default_value_from_register (struct type
*type
,
490 struct frame_info
*frame
);
492 extern struct value
*value_from_register (struct type
*type
, int regnum
,
493 struct frame_info
*frame
);
495 extern CORE_ADDR
address_from_register (struct type
*type
, int regnum
,
496 struct frame_info
*frame
);
498 extern struct value
*value_of_variable (struct symbol
*var
, struct block
*b
);
500 extern struct value
*address_of_variable (struct symbol
*var
, struct block
*b
);
502 extern struct value
*value_of_register (int regnum
, struct frame_info
*frame
);
504 struct value
*value_of_register_lazy (struct frame_info
*frame
, int regnum
);
506 extern int symbol_read_needs_frame (struct symbol
*);
508 extern struct value
*read_var_value (struct symbol
*var
,
509 struct frame_info
*frame
);
511 extern struct value
*allocate_value (struct type
*type
);
512 extern struct value
*allocate_value_lazy (struct type
*type
);
513 extern void allocate_value_contents (struct value
*value
);
514 extern void value_contents_copy (struct value
*dst
, int dst_offset
,
515 struct value
*src
, int src_offset
,
517 extern void value_contents_copy_raw (struct value
*dst
, int dst_offset
,
518 struct value
*src
, int src_offset
,
521 extern struct value
*allocate_repeat_value (struct type
*type
, int count
);
523 extern struct value
*value_mark (void);
525 extern void value_free_to_mark (struct value
*mark
);
527 extern struct value
*value_cstring (char *ptr
, int len
,
528 struct type
*char_type
);
529 extern struct value
*value_string (char *ptr
, int len
,
530 struct type
*char_type
);
531 extern struct value
*value_bitstring (char *ptr
, int len
,
532 struct type
*index_type
);
534 extern struct value
*value_array (int lowbound
, int highbound
,
535 struct value
**elemvec
);
537 extern struct value
*value_concat (struct value
*arg1
, struct value
*arg2
);
539 extern struct value
*value_binop (struct value
*arg1
, struct value
*arg2
,
542 extern struct value
*value_ptradd (struct value
*arg1
, LONGEST arg2
);
544 extern LONGEST
value_ptrdiff (struct value
*arg1
, struct value
*arg2
);
546 extern int value_must_coerce_to_target (struct value
*arg1
);
548 extern struct value
*value_coerce_to_target (struct value
*arg1
);
550 extern struct value
*value_coerce_array (struct value
*arg1
);
552 extern struct value
*value_coerce_function (struct value
*arg1
);
554 extern struct value
*value_ind (struct value
*arg1
);
556 extern struct value
*value_addr (struct value
*arg1
);
558 extern struct value
*value_ref (struct value
*arg1
);
560 extern struct value
*value_assign (struct value
*toval
,
561 struct value
*fromval
);
563 extern struct value
*value_pos (struct value
*arg1
);
565 extern struct value
*value_neg (struct value
*arg1
);
567 extern struct value
*value_complement (struct value
*arg1
);
569 extern struct value
*value_struct_elt (struct value
**argp
,
571 const char *name
, int *static_memfuncp
,
574 extern struct value
*value_aggregate_elt (struct type
*curtype
,
576 struct type
*expect_type
,
580 extern struct value
*value_static_field (struct type
*type
, int fieldno
);
582 extern struct fn_field
*value_find_oload_method_list (struct value
**,
585 struct type
**, int *);
587 enum oload_search_type
{ NON_METHOD
, METHOD
, BOTH
};
589 extern int find_overload_match (struct type
**arg_types
, int nargs
,
591 enum oload_search_type method
, int lax
,
592 struct value
**objp
, struct symbol
*fsym
,
593 struct value
**valp
, struct symbol
**symp
,
594 int *staticp
, const int no_adl
);
596 extern struct value
*value_field (struct value
*arg1
, int fieldno
);
598 extern struct value
*value_primitive_field (struct value
*arg1
, int offset
,
600 struct type
*arg_type
);
603 extern struct type
*value_rtti_target_type (struct value
*, int *, int *,
606 extern struct value
*value_full_object (struct value
*, struct type
*, int,
609 extern struct value
*value_cast_pointers (struct type
*, struct value
*);
611 extern struct value
*value_cast (struct type
*type
, struct value
*arg2
);
613 extern struct value
*value_reinterpret_cast (struct type
*type
,
616 extern struct value
*value_dynamic_cast (struct type
*type
, struct value
*arg
);
618 extern struct value
*value_zero (struct type
*type
, enum lval_type lv
);
620 extern struct value
*value_one (struct type
*type
);
622 extern struct value
*value_repeat (struct value
*arg1
, int count
);
624 extern struct value
*value_subscript (struct value
*array
, LONGEST index
);
626 extern struct value
*value_bitstring_subscript (struct type
*type
,
627 struct value
*bitstring
,
630 extern struct value
*register_value_being_returned (struct type
*valtype
,
631 struct regcache
*retbuf
);
633 extern int value_in (struct value
*element
, struct value
*set
);
635 extern int value_bit_index (struct type
*type
, const gdb_byte
*addr
,
638 extern int using_struct_return (struct gdbarch
*gdbarch
,
639 struct type
*func_type
,
640 struct type
*value_type
);
642 extern struct value
*evaluate_expression (struct expression
*exp
);
644 extern struct value
*evaluate_type (struct expression
*exp
);
646 extern struct value
*evaluate_subexp (struct type
*expect_type
,
647 struct expression
*exp
,
648 int *pos
, enum noside noside
);
650 extern struct value
*evaluate_subexpression_type (struct expression
*exp
,
653 extern void fetch_subexp_value (struct expression
*exp
, int *pc
,
654 struct value
**valp
, struct value
**resultp
,
655 struct value
**val_chain
);
657 extern char *extract_field_op (struct expression
*exp
, int *subexp
);
659 extern struct value
*evaluate_subexp_with_coercion (struct expression
*,
662 extern struct value
*parse_and_eval (char *exp
);
664 extern struct value
*parse_to_comma_and_eval (char **expp
);
666 extern struct type
*parse_and_eval_type (char *p
, int length
);
668 extern CORE_ADDR
parse_and_eval_address (char *exp
);
670 extern LONGEST
parse_and_eval_long (char *exp
);
672 extern void unop_promote (const struct language_defn
*language
,
673 struct gdbarch
*gdbarch
,
674 struct value
**arg1
);
676 extern void binop_promote (const struct language_defn
*language
,
677 struct gdbarch
*gdbarch
,
678 struct value
**arg1
, struct value
**arg2
);
680 extern struct value
*access_value_history (int num
);
682 extern struct value
*value_of_internalvar (struct gdbarch
*gdbarch
,
683 struct internalvar
*var
);
685 extern int get_internalvar_integer (struct internalvar
*var
, LONGEST
*l
);
687 extern void set_internalvar (struct internalvar
*var
, struct value
*val
);
689 extern void set_internalvar_integer (struct internalvar
*var
, LONGEST l
);
691 extern void set_internalvar_string (struct internalvar
*var
,
694 extern void clear_internalvar (struct internalvar
*var
);
696 extern void set_internalvar_component (struct internalvar
*var
,
698 int bitpos
, int bitsize
,
699 struct value
*newvalue
);
701 extern struct internalvar
*lookup_only_internalvar (const char *name
);
703 extern struct internalvar
*create_internalvar (const char *name
);
705 typedef struct value
* (*internalvar_make_value
) (struct gdbarch
*,
706 struct internalvar
*);
707 extern struct internalvar
*
708 create_internalvar_type_lazy (char *name
, internalvar_make_value fun
);
710 extern struct internalvar
*lookup_internalvar (const char *name
);
712 extern int value_equal (struct value
*arg1
, struct value
*arg2
);
714 extern int value_equal_contents (struct value
*arg1
, struct value
*arg2
);
716 extern int value_less (struct value
*arg1
, struct value
*arg2
);
718 extern int value_logical_not (struct value
*arg1
);
722 extern struct value
*value_of_this (const struct language_defn
*lang
);
724 extern struct value
*value_of_this_silent (const struct language_defn
*lang
);
726 extern struct value
*value_x_binop (struct value
*arg1
, struct value
*arg2
,
728 enum exp_opcode otherop
,
731 extern struct value
*value_x_unop (struct value
*arg1
, enum exp_opcode op
,
734 extern struct value
*value_fn_field (struct value
**arg1p
, struct fn_field
*f
,
735 int j
, struct type
*type
, int offset
);
737 extern int binop_types_user_defined_p (enum exp_opcode op
,
741 extern int binop_user_defined_p (enum exp_opcode op
, struct value
*arg1
,
744 extern int unop_user_defined_p (enum exp_opcode op
, struct value
*arg1
);
746 extern int destructor_name_p (const char *name
, struct type
*type
);
748 extern void value_incref (struct value
*val
);
750 extern void value_free (struct value
*val
);
752 extern void free_all_values (void);
754 extern void free_value_chain (struct value
*v
);
756 extern void release_value (struct value
*val
);
758 extern int record_latest_value (struct value
*val
);
760 extern void modify_field (struct type
*type
, gdb_byte
*addr
,
761 LONGEST fieldval
, int bitpos
, int bitsize
);
763 extern void type_print (struct type
*type
, char *varstring
,
764 struct ui_file
*stream
, int show
);
766 extern char *type_to_string (struct type
*type
);
768 extern gdb_byte
*baseclass_addr (struct type
*type
, int index
,
770 struct value
**valuep
, int *errp
);
772 extern void print_longest (struct ui_file
*stream
, int format
,
773 int use_local
, LONGEST val
);
775 extern void print_floating (const gdb_byte
*valaddr
, struct type
*type
,
776 struct ui_file
*stream
);
778 extern void print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
779 struct ui_file
*stream
);
781 extern int value_print (struct value
*val
, struct ui_file
*stream
,
782 const struct value_print_options
*options
);
784 extern void value_print_array_elements (struct value
*val
,
785 struct ui_file
*stream
, int format
,
786 enum val_prettyprint pretty
);
788 extern struct value
*value_release_to_mark (struct value
*mark
);
790 extern int val_print (struct type
*type
, const gdb_byte
*valaddr
,
791 int embedded_offset
, CORE_ADDR address
,
792 struct ui_file
*stream
, int recurse
,
793 const struct value
*val
,
794 const struct value_print_options
*options
,
795 const struct language_defn
*language
);
797 extern int common_val_print (struct value
*val
,
798 struct ui_file
*stream
, int recurse
,
799 const struct value_print_options
*options
,
800 const struct language_defn
*language
);
802 extern int val_print_string (struct type
*elttype
, const char *encoding
,
803 CORE_ADDR addr
, int len
,
804 struct ui_file
*stream
,
805 const struct value_print_options
*options
);
807 extern void print_variable_and_value (const char *name
,
809 struct frame_info
*frame
,
810 struct ui_file
*stream
,
813 extern int check_field (struct type
*, const char *);
815 extern void typedef_print (struct type
*type
, struct symbol
*news
,
816 struct ui_file
*stream
);
818 extern char *internalvar_name (struct internalvar
*var
);
820 extern void preserve_values (struct objfile
*);
824 extern struct value
*value_copy (struct value
*);
826 extern struct value
*value_non_lval (struct value
*);
828 extern void preserve_one_value (struct value
*, struct objfile
*, htab_t
);
832 extern struct value
*varying_to_slice (struct value
*);
834 extern struct value
*value_slice (struct value
*, int, int);
836 extern struct value
*value_literal_complex (struct value
*, struct value
*,
839 extern struct value
*find_function_in_inferior (const char *,
842 extern struct value
*value_allocate_space_in_inferior (int);
844 extern struct value
*value_subscripted_rvalue (struct value
*array
,
845 LONGEST index
, int lowerbound
);
847 /* User function handler. */
849 typedef struct value
*(*internal_function_fn
) (struct gdbarch
*gdbarch
,
850 const struct language_defn
*language
,
853 struct value
**argv
);
855 void add_internal_function (const char *name
, const char *doc
,
856 internal_function_fn handler
,
859 struct value
*call_internal_function (struct gdbarch
*gdbarch
,
860 const struct language_defn
*language
,
861 struct value
*function
,
862 int argc
, struct value
**argv
);
864 char *value_internal_function_name (struct value
*);
866 #endif /* !defined (VALUE_H) */